Flour Machinery has high flour yield is the urgent hope, many flour machine users because of the flour mill flour extraction rate directly affects the production efficiency of manufacturer, so improve the flour mill flour extraction rate is what we need to do, so how to improve the flour mill flour yield?
Wheat flour extraction rate is an important index of production, to increase flour yield, involves many aspects, wheat flour, wheat is the key, bulk density, grain, containing depth from wheat, wheat skin thickness, ash content, the cleaning effect of cleaning equipment and process, water regulation, flour, the suitability of the design of the machinery and technology level, flour machinery technical parameters and operating workers equipped technology and operation method, workshop temperature and humidity conditions. Comprehensive coordination, these factors can make flour machinery on the basis of yield maximum flour yield.
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2013年12月30日星期一
2013年12月27日星期五
Flour flour machined how do temperature
Flour Machine inevitable variety of small problems in the process, it will cause the flour quality is not perfect! Such as flour, flour machined high temperature is what causes, and how we should solve it? In such cases, we should not worry, now I come to your Weapon!
If flour Flour machined high temperature, the flour will be lost nutrients, in order to guarantee the quality of the flour, it is necessary to adjust the gap between the rolls, the temperature is too high because of the small distance between the rollers sake, Another reason is badly worn on the roll, then you need to replace the roller, roller wear can not be too severe to repair.
Flour machine will appear in the case of flour usually low, sometimes even no flour, which was blocked and the screen has a relationship with other substances, and clear about it.
If flour Flour machined high temperature, the flour will be lost nutrients, in order to guarantee the quality of the flour, it is necessary to adjust the gap between the rolls, the temperature is too high because of the small distance between the rollers sake, Another reason is badly worn on the roll, then you need to replace the roller, roller wear can not be too severe to repair.
Flour machine will appear in the case of flour usually low, sometimes even no flour, which was blocked and the screen has a relationship with other substances, and clear about it.
2013年12月20日星期五
Build the good development condition flour machine today
Flour Machine head in advance in the industry and it's created a good situation of development in today's flour machine, seize market opportunities in advance is that it won a big advantage, due to the positioning of the market, and promote comprehensive, depending on the geographical advantage occupied a large market share, has become the mainstay of flour machine industry. Flour machine technology in our country due to a late start, many aspects need further perfect. Some flour in the central plains machining equipment manufacturers in the food processing technology in the field has made the very big contribution.
Many flour machine enterprise through continuous innovation to improve, can very good master the law of the market to grasp the development trend. Rapidly grow up a batch of small and medium-sized flour factory house, although the scale of production is not very big, but the adoption of new production process technology, a long-term investment profit prospects, it is the first selection of investment in factories. Combined with a country's support to encourage policy therefore in the process of development of the game.
Many flour machine enterprise through continuous innovation to improve, can very good master the law of the market to grasp the development trend. Rapidly grow up a batch of small and medium-sized flour factory house, although the scale of production is not very big, but the adoption of new production process technology, a long-term investment profit prospects, it is the first selection of investment in factories. Combined with a country's support to encourage policy therefore in the process of development of the game.
2013年11月19日星期二
The use of bucket elevators attention
In order to better enhance the life of the machine , reduce maintenance costs and improve the use of personnel safety factor , bucket elevator is used to note:
1 , the operator must comply with the "no -load starting , no-load stop " principle. That is the first boot, to be operating normally , give the material ; parking in front of the material inside the machine should be emptied .
2, the work , the feed should be uniform discharge pipe should be smooth in order to avoid congestion. If the issuer blockage, should immediately stop feeding and stop, pull the base flapper , remove the blockage . Note that this time can not directly hand into his base .
3, the normal working hours , the hopper should be in the barrel with an intermediate position , if there is deviation phenomenon or bucket belt is too loose and cause friction collision hopper and barrel , it should promptly be adjusted through tensioning device .
4 , to prevent large foreign matter into the base, so as not to bash hopper, Bucket Elevator affect normal operation . No delivery by the beginning of cleanup materials, feed inlet mesh grilles should be added to prevent the rice straw , wheat straw , rope and other fibrous impurities into the wound caused by blockage base .
5, such as sudden downtime should be first base material accumulated in the discharge and then boot .
6 , should be checked regularly to enhance the tension level with hopper , hopper and the hopper is firmly connected with , if found loose, fall off , hopper skew and breakage , should be promptly repaired or replaced in order to avoid more serious consequences .
2013年11月5日星期二
Mill operation and routine maintenance
The role of the Flour Mill at the heart of the production line , so the mill operation and maintenance management level is directly related to the level of mill performance of the play, determines the quality of products, flour yield , yield and other technical and planning indicators , and will affect the labor intensity of various positions .
In the same production line , different operators have different results . Seen, workers in the flour milling important role in the production process .
1, to improve the level of milling machining operations are key to the production of flour .
With the continuous development of science and technology , flour production technology and production equipment and more advanced . But even the best production technology and production equipment also need people to operate , requiring both to understand the principle , but also practical experience of the operator , according to raw materials , milling processes, the technical characteristics mill , accurate adjustment of powder Road , proficiency in various systems mill, milling to achieve the desired effect .
2 , determine the appropriate Ⅰ B traffic is the most important part of production operations
3 , Roller Mill operation from regulation is the focus of the entire production
Rolling mill from regulation, is the most important operating mill content. In actual production , road and roller flour technical characteristics are generally relatively stable . When the quality of raw materials , climatic conditions and grinding teeth old situation changes , you need to adjust the rolling distance or Ⅰ B flows with adaptation , so that parameters of each product is always in coordination stable state.
4, in the mill operation, the higher quality of the operating personnel , skilled skills , fine equipment maintenance is the key to produce high-quality flour , these aspects are interlinked and mutually affected.
In the same production line , different operators have different results . Seen, workers in the flour milling important role in the production process .
1, to improve the level of milling machining operations are key to the production of flour .
With the continuous development of science and technology , flour production technology and production equipment and more advanced . But even the best production technology and production equipment also need people to operate , requiring both to understand the principle , but also practical experience of the operator , according to raw materials , milling processes, the technical characteristics mill , accurate adjustment of powder Road , proficiency in various systems mill, milling to achieve the desired effect .
2 , determine the appropriate Ⅰ B traffic is the most important part of production operations
3 , Roller Mill operation from regulation is the focus of the entire production
Rolling mill from regulation, is the most important operating mill content. In actual production , road and roller flour technical characteristics are generally relatively stable . When the quality of raw materials , climatic conditions and grinding teeth old situation changes , you need to adjust the rolling distance or Ⅰ B flows with adaptation , so that parameters of each product is always in coordination stable state.
4, in the mill operation, the higher quality of the operating personnel , skilled skills , fine equipment maintenance is the key to produce high-quality flour , these aspects are interlinked and mutually affected.
Mills describes the mechanical structure
Grinding and Fluting Machine from the power , feed , milling and separation of four system components ; wherein the power system including motor , pulleys , belt, composed of spindle and spindle pulleys ; feed system consists of hopper , limited edition plate and the feed tube ; grind by the grinding mill system composed of body and legs ; separation system consists of a brush mounted on the spindle with the spherical snare Rhodes, and compression screw and mounted on the bottom of the mill body Lo rack components. Grinding machine is available in fixed cone mill grinding grinding grinding flour and dynamic alveolar end mill ends , the increased thickness and grinding teeth around the same height as the plug. Thus, in the grinding teeth are not fully broken particles can pass from the plug from the plug through the powder has been further polished , thereby improving the ratio of wheat flour , flour quality and the efficiency of grinding , and grinding teeth easily damaged .
Grinding machine comprises a frame and mounted on the base of the power shaft and connected to the power shaft , and with a feed port of the mill with grinding cone, the technical scheme is : the power shaft along the axial direction of the mill is provided with cone grinding gap adjustment mechanism . Food to be processed according to the particle size ( such as corn, wheat, etc. ) and processed food to adjust the thickness of the different requirements , to meet different user requirements. Centrifugal unloader housing upper side has a feeding tube , centrifugal unloader housing located above the wind pipe, centrifugal unloader housing side with trash mouth, the mouth has a mesh trash , the outer screen has a lid , provided below the discharge port switching valve miscellaneous impurities discharge pipe connected to , the ability to fall together with the dust particles of food debris completely removed , the manufacturing cost is low, with low energy consumption .
Grinding machine comprises a frame and mounted on the base of the power shaft and connected to the power shaft , and with a feed port of the mill with grinding cone, the technical scheme is : the power shaft along the axial direction of the mill is provided with cone grinding gap adjustment mechanism . Food to be processed according to the particle size ( such as corn, wheat, etc. ) and processed food to adjust the thickness of the different requirements , to meet different user requirements. Centrifugal unloader housing upper side has a feeding tube , centrifugal unloader housing located above the wind pipe, centrifugal unloader housing side with trash mouth, the mouth has a mesh trash , the outer screen has a lid , provided below the discharge port switching valve miscellaneous impurities discharge pipe connected to , the ability to fall together with the dust particles of food debris completely removed , the manufacturing cost is low, with low energy consumption .
2013年10月28日星期一
Flour machine a faulty repair immediately after inspection
Troubleshooting - Flour Mill coil burnt fault repair:
Remove the burnt coil , replace coil burning and reinforced insulation for insulating paint dip treatment method. In the removal of burnt wire resistance must amount prospective diameter, number of quasi- root of the number of each turn , span , keep in mind the wiring, cleaning tank debris. A coil with the same parameters , according to the requirements of each assembly line for shaping process , the exposed ends of the stator ring head equal. Docile body after penetration pressure line board at the beginning and end of each turn and entered the terminal sequence , phase into the terminal, then the motor axially vertically into the drying room or other secure sources of heat, with 100 ℃, pre- heated to facilitate the penetration of insulating paint .
Dip both ends of a good paint , then dried (85-110 ℃) 4h can be. Finally installed rotor , end caps, commissioning 0.5h, set aside. Impregnation running, appear to ground , short circuit fault, replace the coil with the overall troubleshooting . Repair is not varnished , check out the current imbalance in power reduction and other failures , the use of partial replacement coil troubleshooting.
Remove the burnt coil , replace coil burning and reinforced insulation for insulating paint dip treatment method. In the removal of burnt wire resistance must amount prospective diameter, number of quasi- root of the number of each turn , span , keep in mind the wiring, cleaning tank debris. A coil with the same parameters , according to the requirements of each assembly line for shaping process , the exposed ends of the stator ring head equal. Docile body after penetration pressure line board at the beginning and end of each turn and entered the terminal sequence , phase into the terminal, then the motor axially vertically into the drying room or other secure sources of heat, with 100 ℃, pre- heated to facilitate the penetration of insulating paint .
Dip both ends of a good paint , then dried (85-110 ℃) 4h can be. Finally installed rotor , end caps, commissioning 0.5h, set aside. Impregnation running, appear to ground , short circuit fault, replace the coil with the overall troubleshooting . Repair is not varnished , check out the current imbalance in power reduction and other failures , the use of partial replacement coil troubleshooting.
What is the chain conveyor
The Chain Conveyor is the use of traction chain , bearing , or installed on a slat chains , metal mesh , roller bearing materials such as conveyors . According to the chain bearing surface installed on different separable : Chain / chain plate / chain network type / slat / chain bucket / tray / trolley , in addition, is also often associated with other conveyors, lifting devices, etc. composed of various functions of the production line .
Chain conveyors and related devices , enabling the delivery of materials and measurement . Compact, small footprint , you can change the three-dimensional transport direction . High filling degree lower conveyor speed , so wear is very low, line up loud enough . In the transportation of materials can be filled gas . Transport to ensure no dust leaking into the environment. Conveyors can send hot, boiling , cold or other conditions of the media. Conveyor drive shaft may be positive, the device can change the transport direction , this time in addition to materials fall by gravity from other forces , the low conveying speed such that the total power consumption is small . The material is transported from the inlet to the outlet flange is in a closed state between . Exit without setting filter.
Smooth transportation of materials along the tube , basically no internal movement, so less material damage and slow corners so little material particles transported produce debris. Tube does not produce dust explosion , because the sheet materials confined to a small cell , not the explosion occurred . Depending on the feeding situation can be separated between imports more than 10 meters away. Completely maintenance-free bearings, surrounded fastening , self-lubricating . There optimized shoulder chain , surface drainage and tooth surface deposition , design optimization , the use of hardened chain with minimal wear. Dimensions as small as possible . By adjusting the chain tension , produced by a special conveyor parts, and in a smaller bending radius has maintained a transport plate in the tubing inside the vertical movement , and to maintain a constant throughput . Special delivery tray , has a very low friction coefficient and stable transmission capacity .
Chain conveyors and related devices , enabling the delivery of materials and measurement . Compact, small footprint , you can change the three-dimensional transport direction . High filling degree lower conveyor speed , so wear is very low, line up loud enough . In the transportation of materials can be filled gas . Transport to ensure no dust leaking into the environment. Conveyors can send hot, boiling , cold or other conditions of the media. Conveyor drive shaft may be positive, the device can change the transport direction , this time in addition to materials fall by gravity from other forces , the low conveying speed such that the total power consumption is small . The material is transported from the inlet to the outlet flange is in a closed state between . Exit without setting filter.
Smooth transportation of materials along the tube , basically no internal movement, so less material damage and slow corners so little material particles transported produce debris. Tube does not produce dust explosion , because the sheet materials confined to a small cell , not the explosion occurred . Depending on the feeding situation can be separated between imports more than 10 meters away. Completely maintenance-free bearings, surrounded fastening , self-lubricating . There optimized shoulder chain , surface drainage and tooth surface deposition , design optimization , the use of hardened chain with minimal wear. Dimensions as small as possible . By adjusting the chain tension , produced by a special conveyor parts, and in a smaller bending radius has maintained a transport plate in the tubing inside the vertical movement , and to maintain a constant throughput . Special delivery tray , has a very low friction coefficient and stable transmission capacity .
2013年10月25日星期五
Weightless paddle mixer works
Weightless Paddle Mixer by a motor through reducer, chain drive two parallel spindles to a certain speed for constant reverse rotation. At a certain angle blade mounted on the spindle of the material spilled into the entire container space , so that the material in an instant state of weightlessness , widely staggered convection , diffusion, so as to achieve uniform mixing . On the specific gravity and the disparity in size and shape of the mixed material will not produce segregation , is a rapid and efficient powder mixing equipment . The machine according to user requirements , to increase and diversify jacket rods are also available pneumatic discharging and spray devices . Access to some materials made ??of carbon steel or stainless steel.
The use of bucket elevator maintenance considerations
1, Bucket Elevator should be empty load driving. So every time before shutdown drained all the material inside the hopper, and then stop.
2, can not be reversed. Rewind chain derailment phenomenon that is likely to occur, excluding derailment failure is very troublesome.
3, uniform feeding. Sudden increase in the volume of feed ban. Feeding amount can not exceed the hoist transmission capacity. Or likely to cause serious bottom material buildup occurs when "boring car" accident.
4, in a timely manner appropriate to add oil.
5, chains and hopper badly worn or damaged should be replaced.
2, can not be reversed. Rewind chain derailment phenomenon that is likely to occur, excluding derailment failure is very troublesome.
3, uniform feeding. Sudden increase in the volume of feed ban. Feeding amount can not exceed the hoist transmission capacity. Or likely to cause serious bottom material buildup occurs when "boring car" accident.
4, in a timely manner appropriate to add oil.
5, chains and hopper badly worn or damaged should be replaced.
2013年10月22日星期二
How to choose food processing machinery
Flour Machinery is relatively large mechanical equipment, so , in the purchase of flour machine must pay attention to its functionality and quality , otherwise difficult to return or exchange after the purchase , and if the quality is not good , maintenance is not a small overhead .
Flour machine is made of cast material with a non , using a steel plate welded , after crushing the wheat flour machine , Wheat Flour Mill and bran in the air blowing, collected by different means , like crushed classification device as in the screen device , not only able to crush wheat , wheat flour, but also the classification of the different components and the collection , the result of this hierarchical collection demonstrated residue, 100% yield.
Mills can always adjust the fineness of flour , grains, without increasing sifter filtering. Grinding machines are wearing parts with a special wear-resistant materials or carbide production , they are very good wear resistance , even wearing parts broken, replacement cost is not high .
Grinding machine downtime in the case , you can always clean material and has anti- jam feature. Mills also a variety of different materials simultaneously crushing functions, and flour mixture evenly graded collection, will not produce more than slag . Mills does not limit the size of feed , without pre- crushing can directly enter the grinding machine grinding, even if the material has a different moisture content does not matter, does not affect the operation of grinding machines .
Flour machine is made of cast material with a non , using a steel plate welded , after crushing the wheat flour machine , Wheat Flour Mill and bran in the air blowing, collected by different means , like crushed classification device as in the screen device , not only able to crush wheat , wheat flour, but also the classification of the different components and the collection , the result of this hierarchical collection demonstrated residue, 100% yield.
Mills can always adjust the fineness of flour , grains, without increasing sifter filtering. Grinding machines are wearing parts with a special wear-resistant materials or carbide production , they are very good wear resistance , even wearing parts broken, replacement cost is not high .
Grinding machine downtime in the case , you can always clean material and has anti- jam feature. Mills also a variety of different materials simultaneously crushing functions, and flour mixture evenly graded collection, will not produce more than slag . Mills does not limit the size of feed , without pre- crushing can directly enter the grinding machine grinding, even if the material has a different moisture content does not matter, does not affect the operation of grinding machines .
Small flour mill and wheat germ flour
Small Flour Mill for flour processing capacity is not low, and does not remove the germ of wheat germ , wheat germ flour will show a natural yellow, there is a kind Wheat flavor, no wheat germ flour , not very tasty.
Wheat flour in a large machining , in order to make even more whiter flour , wheat germ wheat will be removed , and then processing the rest of the wheat flour wheat germ removed although this white, but there is no smell , good-looking, not delicious.
Small wheat germ flour machine components not removed , so it is the original processing out of wheat flour , also called plain flour. This bread flour Whatever you do or do other pasta, the taste is very natural .
Wheat flour in a large machining , in order to make even more whiter flour , wheat germ wheat will be removed , and then processing the rest of the wheat flour wheat germ removed although this white, but there is no smell , good-looking, not delicious.
Small wheat germ flour machine components not removed , so it is the original processing out of wheat flour , also called plain flour. This bread flour Whatever you do or do other pasta, the taste is very natural .
2013年10月16日星期三
Bucket elevator structural form
Bucket Elevator general structure can be divided into three parts: for the head, including the drive, the drive wheel, wheels, and the head discharge port; was barrel, including traction and central chassis and other components; under the base , includes a lower housing, feed hopper, tensioners and tail wheel.
Bucket head machine head by the head casing and drive, drive wheels and other components. Drive means includes a motor and transmission devices, transmission wheel drive pulley is generally (traction components of conveyor belts) or sprocket (lead member of the chain), the drive is connected to the drive wheels, so that bucket elevator gain momentum and drive its operation . Mostly gear deceleration device, usually the first stage with V-belt drive or chain drive, the second stage with reducer and fluid couplings. Should be based on the shape of the head casing material thrown from the track be designed to ensure that the material discharged from the hopper into the smooth discharge groove side of the housing should be open viewing window to observe the discharge conditions.
Bucket head machine head by the head casing and drive, drive wheels and other components. Drive means includes a motor and transmission devices, transmission wheel drive pulley is generally (traction components of conveyor belts) or sprocket (lead member of the chain), the drive is connected to the drive wheels, so that bucket elevator gain momentum and drive its operation . Mostly gear deceleration device, usually the first stage with V-belt drive or chain drive, the second stage with reducer and fluid couplings. Should be based on the shape of the head casing material thrown from the track be designed to ensure that the material discharged from the hopper into the smooth discharge groove side of the housing should be open viewing window to observe the discharge conditions.
Bucket elevator installation requirements analysis
(1) bucket elevator lower section of the support surface, we must ensure is located in the base of the horizontal plane.
(2) the bucket elevator shaft and lower upper tensioning shaft shall be within the same vertical plane, and the two should be parallel to the horizontal axis line.
(3) intermediate housing flange connections, may not have a significant dislocation. Flanges can pad into asbestos pad or waterproof canvas to ensure the seal.
(4) bucket elevator machine lower section, the upper section of the intermediate housing and in the same vertical line centrelines, the vertical deviation of the length of the upper part of 1cm allowed to exceed 1mm, the cumulative total height deviation not exceeding 8mm .
(5) the traction member hopper should be positioned correctly and securely tightened. In operation, there should be no deflection and collision case phenomenon.
(6) Bucket Elevator deflection plates installed, must comply with the requirements of the drawings.
(7) After adjusting screw tension device should make the traction member having a uniform required for normal operation of the tensioning force. In order that there is sufficient tension in operation stroke to be less than the rest of the tensioning stroke of 50% of the full stroke
(8) the axis of the high speed shaft of the gear unit and the motor axis to be parallel to each other in the same horizontal plane; slow axis and the axis of the drive shaft axis of the bucket, to be on the same horizontal line, the maximum offset is not parallel more than 0.2mm, the maximum angle between the axis must not exceed 40o.
(9) bucket elevator lifting equipment should be installed, from the weight of not less than 2t. Crane rail base and shaft centerline distance is generally 22.2m. For D160, D250 bucket elevator to take 2m; For D350, D450, HL300 \ HL400 bucket elevator to take 2.2m.
(2) the bucket elevator shaft and lower upper tensioning shaft shall be within the same vertical plane, and the two should be parallel to the horizontal axis line.
(3) intermediate housing flange connections, may not have a significant dislocation. Flanges can pad into asbestos pad or waterproof canvas to ensure the seal.
(4) bucket elevator machine lower section, the upper section of the intermediate housing and in the same vertical line centrelines, the vertical deviation of the length of the upper part of 1cm allowed to exceed 1mm, the cumulative total height deviation not exceeding 8mm .
(5) the traction member hopper should be positioned correctly and securely tightened. In operation, there should be no deflection and collision case phenomenon.
(6) Bucket Elevator deflection plates installed, must comply with the requirements of the drawings.
(7) After adjusting screw tension device should make the traction member having a uniform required for normal operation of the tensioning force. In order that there is sufficient tension in operation stroke to be less than the rest of the tensioning stroke of 50% of the full stroke
(8) the axis of the high speed shaft of the gear unit and the motor axis to be parallel to each other in the same horizontal plane; slow axis and the axis of the drive shaft axis of the bucket, to be on the same horizontal line, the maximum offset is not parallel more than 0.2mm, the maximum angle between the axis must not exceed 40o.
(9) bucket elevator lifting equipment should be installed, from the weight of not less than 2t. Crane rail base and shaft centerline distance is generally 22.2m. For D160, D250 bucket elevator to take 2m; For D350, D450, HL300 \ HL400 bucket elevator to take 2.2m.
2013年10月9日星期三
Belt conveyor Troubleshooting and preventive measures
A Belt Conveyor common faults and
( 1 ) conveyor belt does not turn : after starting the motor idling conveyor drive roller slip , not start up , this failure is due to insufficient belt tension , tension device is not adjusted , the conveyor belt is too long, heavy start , the conveyor belt Last heap of coal wait causes.
( 2 ) conveyor deviation : Deviation reason is in operation generating a lateral force , lateral force generated following reasons : Conveyor loading biased side , rather than mounted on the center position ; idlers and rollers installation is not perpendicular to the center axis of the conveyor ; fuselage height rope inconsistent ; conveyor belt joint straight, not straight ; unloading roller position is not adjusted ; tail rollers, guide rollers did not adjust the belt can cause deviation .
Deviation modulation are generally carried out belt conveyor operation , adjustment to the attention of the belt running direction and the deviation direction , if the belt deviation to the right , on the side where the belt starts moving in the direction along the conveyor belt rollers run Right shaft , or along the transport direction of movement of the left idler shaft , so that the left end of the roller is slightly tilted forward, the adjustment to adjust a few more rollers, each roller is less tune some , excessive adjustment belt will be in the other direction deviation, adjust the belt to the left deviation method described above, is an adjustment in the opposite direction ; belt deviation when it occurs in the guide roller , tail roller , unloading roller , adjust the headstock , tail rack side rail and bolts before adjustment bolt to loosen some of the ends of the roller shaft to facilitate adjustment Fluting machine, the adjusted to tighten , having a good deviation roller .
( 3 ) Belt Easy Disconnect: This is caused by the belt tension is too large , the joint is not solid, poor quality belt buckle , belt use for a long time , and poor quality of maintenance reasons, is to tighten the tensioning device to reduce tension replace them with new belts and strengthen the quality of maintenance .
( 4 ) Reducer abnormal sound : This is caused by excessive wear of bearings and gears gap is too large or snail shell stable Sisong moving cause, treatment is to replace the bearings, adjust gap or replace the whole gearbox overhaul .
( 5 ) excessive heating gear : This is due to too much oil , cooling performance is poor, reducer buried coal caused by the source , treatment method is to adjust the oil , remove the source of coal .
( 6 ) gear oil spill : damage due to seals , combined with uneven surface reducer casing , Counterpart bolts are not tight, approach is to replace the seals , tighten the joint surface and each box bearing cap bolts.
( 7 ) roller does not turn : The reason is roller bearing damage , roller seals on both sides into the coal , the block does not turn, so that the roller shaft bent by excessive force . Approach is to replace the rollers, and repair , reducing the loading and unloading point elevation , or loading and unloading points use shockproof Care roll .
Second, the failure to prevent belt conveyor measures
( A ) To ensure that the conveyor work, in addition to daily general repair and maintenance , but also pay attention to the daily inspection, periodic maintenance, repairs and maintenance to improve quality .
( 2 ) to improve the expertise of maintenance personnel , proper operation of belt conveyors, to ensure stable operation of the conveyor .
( 1 ) conveyor belt does not turn : after starting the motor idling conveyor drive roller slip , not start up , this failure is due to insufficient belt tension , tension device is not adjusted , the conveyor belt is too long, heavy start , the conveyor belt Last heap of coal wait causes.
( 2 ) conveyor deviation : Deviation reason is in operation generating a lateral force , lateral force generated following reasons : Conveyor loading biased side , rather than mounted on the center position ; idlers and rollers installation is not perpendicular to the center axis of the conveyor ; fuselage height rope inconsistent ; conveyor belt joint straight, not straight ; unloading roller position is not adjusted ; tail rollers, guide rollers did not adjust the belt can cause deviation .
Deviation modulation are generally carried out belt conveyor operation , adjustment to the attention of the belt running direction and the deviation direction , if the belt deviation to the right , on the side where the belt starts moving in the direction along the conveyor belt rollers run Right shaft , or along the transport direction of movement of the left idler shaft , so that the left end of the roller is slightly tilted forward, the adjustment to adjust a few more rollers, each roller is less tune some , excessive adjustment belt will be in the other direction deviation, adjust the belt to the left deviation method described above, is an adjustment in the opposite direction ; belt deviation when it occurs in the guide roller , tail roller , unloading roller , adjust the headstock , tail rack side rail and bolts before adjustment bolt to loosen some of the ends of the roller shaft to facilitate adjustment Fluting machine, the adjusted to tighten , having a good deviation roller .
( 3 ) Belt Easy Disconnect: This is caused by the belt tension is too large , the joint is not solid, poor quality belt buckle , belt use for a long time , and poor quality of maintenance reasons, is to tighten the tensioning device to reduce tension replace them with new belts and strengthen the quality of maintenance .
( 4 ) Reducer abnormal sound : This is caused by excessive wear of bearings and gears gap is too large or snail shell stable Sisong moving cause, treatment is to replace the bearings, adjust gap or replace the whole gearbox overhaul .
( 5 ) excessive heating gear : This is due to too much oil , cooling performance is poor, reducer buried coal caused by the source , treatment method is to adjust the oil , remove the source of coal .
( 6 ) gear oil spill : damage due to seals , combined with uneven surface reducer casing , Counterpart bolts are not tight, approach is to replace the seals , tighten the joint surface and each box bearing cap bolts.
( 7 ) roller does not turn : The reason is roller bearing damage , roller seals on both sides into the coal , the block does not turn, so that the roller shaft bent by excessive force . Approach is to replace the rollers, and repair , reducing the loading and unloading point elevation , or loading and unloading points use shockproof Care roll .
Second, the failure to prevent belt conveyor measures
( A ) To ensure that the conveyor work, in addition to daily general repair and maintenance , but also pay attention to the daily inspection, periodic maintenance, repairs and maintenance to improve quality .
( 2 ) to improve the expertise of maintenance personnel , proper operation of belt conveyors, to ensure stable operation of the conveyor .
Belt conveyor maintenance
Belt Conveyor, also known mainly from the rack, conveyor belts , belt roller, tensioning equipment, transmission equipment and other components. Body is made of high quality steel plate convergence , by the difference between front and rear legs constitute irregularities rack , the plane was definitely skewed viewpoint . Rack is equipped with a belt roller , roller , etc., for the femoral artery and the supporting conveyor belts . There geared motor drives and electric drum drive both methods.
1 the operation of the belt conveyor
2 To view the conveyor before shutdown , there is no obstacle to endanger conveyor belt . If there is , to remove obstacles to ;
3 before shutting down the power to investigate is not normal , if necessary, to carry out measurement allocation to ensure that the needs of normal voltage equipment ;
(4) If the device is normal by the view , Fluting machine can shut down operation ;
Switch the order of attention
a. shutdown sequence : Close the control box power switch ( power indicator lit ) → engine start button → the ratio control rotary switch to the "ON" position → gradually rotating speed control knob to the desired speed scale . Make uniform operation ; Do not use beyond 1500rpm scale .
b. shutdown sequence : ratio control in gradually rotating the knob back to the " 0" position → be flat conveyor will stop ratio control rotary switch to the "OFF" orientation → closed ignition switch and power switch .
1 the operation of the belt conveyor
2 To view the conveyor before shutdown , there is no obstacle to endanger conveyor belt . If there is , to remove obstacles to ;
3 before shutting down the power to investigate is not normal , if necessary, to carry out measurement allocation to ensure that the needs of normal voltage equipment ;
(4) If the device is normal by the view , Fluting machine can shut down operation ;
Switch the order of attention
a. shutdown sequence : Close the control box power switch ( power indicator lit ) → engine start button → the ratio control rotary switch to the "ON" position → gradually rotating speed control knob to the desired speed scale . Make uniform operation ; Do not use beyond 1500rpm scale .
b. shutdown sequence : ratio control in gradually rotating the knob back to the " 0" position → be flat conveyor will stop ratio control rotary switch to the "OFF" orientation → closed ignition switch and power switch .
2013年9月29日星期日
Bucket elevators need to breathe
Bucket elevator structure is not complicated, it is commonly used to transport produce powders, Seed
coating machine.In the bucket elevator shall be provided at the bottom of the head and suction pipes and vents to ensure that the bucket elevator and feed in the discharge process will not form a vacuum and dust spills . A well-made transportation equipment, it must be reliable sealing . But good sealing of the material during discharge and the feed pressure difference is bound , resulting in difficulties in feeding and unloading . Vents inside the Screw
conveyor pressure and external pressure substantially equal. Adequate suction ventilation to avoid the dust from the overflow , avoiding waste and clean environment .
Improve breathing have smooth internal confidential environment, reduce waste and improve efficiency.
Improve breathing have smooth internal confidential environment, reduce waste and improve efficiency.
2013年9月28日星期六
Screw backflow of material
Screw Conveyor for the transport of objects conveyor . Currently involved in the field of conveyor used in metallurgy, building materials, chemicals , food and mechanical processing and other sectors. Screw -structure can be divided into horizontal and vertical screw conveyor screw conveyor two major types . This is mainly transported material through chat shift direction angle division.
Screw conveyor during operation , if there are material card out of the bearing block , this is the back. If reflux occurs frequently conveyor , screw conveyor throughput will drop a large amount of screw conveyor for conveying , backflow of material is likely to undermine gear, resulting in excessive current gear burned , causing economic losses.
View from the screw conveyor transport process : Controller control wheel slip running speed and the speed of the material determines the material conveying speed of the conveyor . Conveyor fill factor , determines the time of unloading bay , and the pace of late , depends on feed screw , and the motor size. Therefore, to improve the size of the auger shaft and the motor size can solve the problem material jamming .
Screw the body from head section , the middle section , the tail section of three parts. Screw the whole production chain has become one of important equipments . Advanced structure , adaptable , small resistance , long life , easy maintenance, protection devices is a significant feature of the screw conveyor .
The main structure by conveyor wheel , belt tensioner and a flexible traction element composition, therefore , they are often referred to as a flexible traction member conveying device. Screw conveyor is different, it is based on a rigid spirochete realized as the main component material handling , usually called a rigid " pull" component conveying equipment.
Screw conveyor during operation , if there are material card out of the bearing block , this is the back. If reflux occurs frequently conveyor , screw conveyor throughput will drop a large amount of screw conveyor for conveying , backflow of material is likely to undermine gear, resulting in excessive current gear burned , causing economic losses.
View from the screw conveyor transport process : Controller control wheel slip running speed and the speed of the material determines the material conveying speed of the conveyor . Conveyor fill factor , determines the time of unloading bay , and the pace of late , depends on feed screw , and the motor size. Therefore, to improve the size of the auger shaft and the motor size can solve the problem material jamming .
Screw the body from head section , the middle section , the tail section of three parts. Screw the whole production chain has become one of important equipments . Advanced structure , adaptable , small resistance , long life , easy maintenance, protection devices is a significant feature of the screw conveyor .
The main structure by conveyor wheel , belt tensioner and a flexible traction element composition, therefore , they are often referred to as a flexible traction member conveying device. Screw conveyor is different, it is based on a rigid spirochete realized as the main component material handling , usually called a rigid " pull" component conveying equipment.
Screw cold winter season maintenance work to do well
Screw stimulate the economy begins to ferment , as long as you can see observe at this time conveying equipment turnover rate is not high, small models of transportation equipment sales have increased, although the increase is modest , but more than pre- much better. Screw in the industry market price is generally low, the cost of production and performance of the device there is a certain relationship , but why small equipment sales in the current large-scale equipment to be higher than it .
Screw the price is a very important condition , because it is the production base in Xinxiang price will be more favorable relationship between a number of , as well as an increase in sales of small equipment breakdown prompted . Current economic reasons , many product prices are down a lot, using the screw conveyor to pay all the production is small, carefully calculate still profitable , but with the large equipment is different, larger sizes Screw purchase and production costs are now the situation is not conducive .
Vertical screw conveyor is suitable for short distance vertical transportation . Flexible screw conveyor screw by a flexible shaft and blade composed of synthetic rubber , easy to bend, or process according to the site requirements of any arrangement for space transportation . There are pull-type screw conveyor blade and pull the entire loss , now pull any thickness can be made with the specifications of size, should not be made whole pull nonstandard helix.
Transportation of materials from the perspective of the direction of displacement divided Hongdae screw conveyor is divided into horizontal and vertical screw conveyor screw conveyor into two types , mainly used for all kinds of powder , granular and small block and other loose materials horizontal transport and vertical lift , the screw conveyor suitable for transporting perishable, viscous , easy caking or high temperature , afraid of pressure , there is greater corrosive special materials .
Screw Conveyor are generally body material inlet and outlet and the drive unit has three major components ; screw conveyor helical blades have a physical spiral surface with spiral blade helicoid surface and the three forms , which vane helical surface application relatively small, mainly used for transporting material viscosity and compressibility , this snail hanging face, with the completion of the process of transfer operations , both of materials and finish stirring, mixing and other functions.
Screw the price is a very important condition , because it is the production base in Xinxiang price will be more favorable relationship between a number of , as well as an increase in sales of small equipment breakdown prompted . Current economic reasons , many product prices are down a lot, using the screw conveyor to pay all the production is small, carefully calculate still profitable , but with the large equipment is different, larger sizes Screw purchase and production costs are now the situation is not conducive .
Vertical screw conveyor is suitable for short distance vertical transportation . Flexible screw conveyor screw by a flexible shaft and blade composed of synthetic rubber , easy to bend, or process according to the site requirements of any arrangement for space transportation . There are pull-type screw conveyor blade and pull the entire loss , now pull any thickness can be made with the specifications of size, should not be made whole pull nonstandard helix.
Transportation of materials from the perspective of the direction of displacement divided Hongdae screw conveyor is divided into horizontal and vertical screw conveyor screw conveyor into two types , mainly used for all kinds of powder , granular and small block and other loose materials horizontal transport and vertical lift , the screw conveyor suitable for transporting perishable, viscous , easy caking or high temperature , afraid of pressure , there is greater corrosive special materials .
Screw Conveyor are generally body material inlet and outlet and the drive unit has three major components ; screw conveyor helical blades have a physical spiral surface with spiral blade helicoid surface and the three forms , which vane helical surface application relatively small, mainly used for transporting material viscosity and compressibility , this snail hanging face, with the completion of the process of transfer operations , both of materials and finish stirring, mixing and other functions.
2013年9月26日星期四
Small hammer crusher wear a shock after the effective exclusion
Hammer Mill After a long work, increasing the degree of wear of the machine , there will be all kinds of problems , the most common problem is that the hammer crusher vibration significantly increased , the noise is also growing , not only cause noise pollution, will seriously affect the operation efficiency of the crusher and crushing strength, also caused a great security risk .
Hammer crusher is usually caused by vibrations cause foundation cracks , loose bolts , bearing wear , the individual hammer crusher broken off so unbalanced vibrations . Maintenance personnel inspect the above questions : check whether there is some basis for cracks, loose bolts , breakage , two bearing without walking the inner and outer phenomena , clearance size. According to these data to determine whether the record hammerhead counterweight specification requirements , hammer wear uniform , with or without breaking hammer . When the above conditions are excluded , for further examination, in the course of observing plate moving rotor hammer if there are stuck in the hammer plate , unable to work , as this will cause changes in the radius of gyration , rotor balancing lost cause vibration . Card hammer hammer is due to the wear of the disc . Therefore crusher badly unbalanced , causing severe vibration operation .
Specific vibration causes are varied , in most cases the analysis , there will be an unusual situation , on specific issues treated . First processing 40mm × 40mm thickness of 20mm steel plate , and then welding four plates on each hammer . Care must be taken in the direction of rotation of the hammer hammer restrictions can not be dead , to ensure a certain degree of leeway , basically to ensure that the hammer and hammer plate inside the outer arc tangent . This will not only ensure that the hammer is not stuck, but also to ensure the hammer in the crushing process of certain buffer to reduce the impact crusher .
Hammer crusher is usually caused by vibrations cause foundation cracks , loose bolts , bearing wear , the individual hammer crusher broken off so unbalanced vibrations . Maintenance personnel inspect the above questions : check whether there is some basis for cracks, loose bolts , breakage , two bearing without walking the inner and outer phenomena , clearance size. According to these data to determine whether the record hammerhead counterweight specification requirements , hammer wear uniform , with or without breaking hammer . When the above conditions are excluded , for further examination, in the course of observing plate moving rotor hammer if there are stuck in the hammer plate , unable to work , as this will cause changes in the radius of gyration , rotor balancing lost cause vibration . Card hammer hammer is due to the wear of the disc . Therefore crusher badly unbalanced , causing severe vibration operation .
Specific vibration causes are varied , in most cases the analysis , there will be an unusual situation , on specific issues treated . First processing 40mm × 40mm thickness of 20mm steel plate , and then welding four plates on each hammer . Care must be taken in the direction of rotation of the hammer hammer restrictions can not be dead , to ensure a certain degree of leeway , basically to ensure that the hammer and hammer plate inside the outer arc tangent . This will not only ensure that the hammer is not stuck, but also to ensure the hammer in the crushing process of certain buffer to reduce the impact crusher .
Hammer crusher installation commissioning
1, the installation can be selected according to sources of raw materials terrain.
2, the machine by the anchor bolts in the concrete , the design of the foundation when leaving a row of mine shafts , and its slope can not be less than 50 °, but the user can also be based feeder and transport equipment custom .
3, the motor should be installed with the inlet in the opposite direction .
4 , easy to use electrical Grain testing equipment in order to better position .
5 , before commissioning should first check the fasteners are completely secure.
6, check whether the body falls unbreakable metal or other debris .
7, check whether the proper bearing lubrication .
8 , turn the rotor by hand to see if they are functioning properly , without friction phenomenon , if recognized as unimpeded movement when empty before starting, test after half an hour no noise, no swing , bearing temperature does not exceed 30 ℃, can be load test .
2, the machine by the anchor bolts in the concrete , the design of the foundation when leaving a row of mine shafts , and its slope can not be less than 50 °, but the user can also be based feeder and transport equipment custom .
3, the motor should be installed with the inlet in the opposite direction .
4 , easy to use electrical Grain testing equipment in order to better position .
5 , before commissioning should first check the fasteners are completely secure.
6, check whether the body falls unbreakable metal or other debris .
7, check whether the proper bearing lubrication .
8 , turn the rotor by hand to see if they are functioning properly , without friction phenomenon , if recognized as unimpeded movement when empty before starting, test after half an hour no noise, no swing , bearing temperature does not exceed 30 ℃, can be load test .
2013年9月17日星期二
Conveyor belt installation and maintenance
First, the startup and shutdown
Conveyor generally be started in an unloaded condition. By installing several units in the conveyor belt should be used when you can lock the starter to the control room through a certain order to start and stop. In addition, in order to prevent incidents, each conveyor should be set in place to start or stop buttons can be individually stopped Renyiyitai. In order to prevent the conveyor belt for some reason is longitudinal tear, when the conveyor is longer than 30m, the length along the conveyor, should be spaced a certain distance (e.g. 25-30m) to install a stop button.
Second, the installation of belt conveyor
Belt conveyor installation is typically carried out according to the following stages.
1 Install Belt Conveyor rack rack rack installation is started from scratch, and then install the sections sequentially intermediate frame, the final installation of the tailstock. A mounting rack, first to the entire length of the conveyor centerline pulling, due to keep the conveyor belt center line in a straight line is an important condition for the normal operation, so the installation of the rack sections, must be aligned with the centerline, but also put on airs leveling the rack on the centerline of the allowable error per meter captain of ± 0.1mm. However, the entire length of the conveyor frame centered on the error should not exceed 35mm. When all the single install and pinpoint can then be connected to each block.
2 Install drive unit mounted drives, you must pay attention to the belt conveyor belt conveyor drive shaft and perpendicular to the centerline, the width of the drive roller conveyor centerline central and coincides with the axis of the shaft line reducer parallel. Also, all shafts and rollers should be leveling. Axis horizontal error, according to the width of the conveyor, allowing the range of 0.5-1.5mm. Driving means installed at the same time, the tail wheel, etc. can be mounted tensioning device, the tensioning device of the axis of the drum, should be perpendicular to the centerline of the belt conveyor.
3 Install the rack rollers, gear and tensioning device after installation, you can install the upper and lower idler roller frame, so that the belt has a slow change to the curved arc, bending roll cage segment prop prop pitch as normal roller frame pitch 1/2 to 1/3. Idler installation, you should make it flexible rotary light.
4 belt conveyor belt in order to ensure the final pinpoint idlers and rollers are always in the center line of the operation, installation rollers, racks and rollers must meet the following requirements:
1) All rollers must line up parallel to each other and keep the horizontal level.
2) All the rollers are arranged in rows parallel to each other.
3) frame supporting structure must be linear, but keeping the horizontal level. To this end, the drive roller and roller frame after installation, should the centerline and the horizontal conveyor for final alignment.
5 is then fixed on the basis of the rack or floor. After a fixed belt conveyors can be fitted to the loading and unloading devices.
6 hanged hanged conveyor belt, the first shop in the strip conveyor idlers on load segments, Wai hold after the drive roller, and then deposited in the heavy segment on roller. Let hanging strips of use 0.5-1.5t hand winch. Connecting strip under tension when the roller moves the tensioning device shall limit position of the car and screw tensioning device To pull the gear shift direction; while picking up tight vertical move to the top of the drum unit to make . In previous belt tension should be installed reducer and motor, tilt conveyor confidential installed brakes.
7 belt conveyor installation, the need for idling test machine. In the idling test machine, pay attention to whether the running belt deviation phenomenon, driven part of the operating temperature, roller during operation activities, cleaning device and the guide plate in contact with the belt surface rigor, etc., while make the necessary adjustments, the components are normal after the operation can be performed with a load test machine. If a spiral tensioning device, with load test machine, but also once again its tightness adjustment.
Third, the maintenance of belt conveyors
To ensure reliable operation of belt conveyors, the most important is to detect and eliminate possible failures. This operation must always observe the work of transport, such as abnormal should timely manner. Mechanical workers should be regular inspections and check for any situations requiring attention or parts, this is very important. For example, a roller, does not seem very important, but a high-speed conveyor belt worn materials may soon put its shell worn out, the emergence of a blade, the blade could seriously damage an expensive belt. Workers trained or experienced staff to detect impending accident and take preventive measures. Belt conveyor belt conveyor costs in the entire account for a large proportion. In order to reduce the cost of replacement and repair belt, must pay attention to the operator and maintenance personnel for the operation and maintenance of conveyor knowledge training.
Conveyor generally be started in an unloaded condition. By installing several units in the conveyor belt should be used when you can lock the starter to the control room through a certain order to start and stop. In addition, in order to prevent incidents, each conveyor should be set in place to start or stop buttons can be individually stopped Renyiyitai. In order to prevent the conveyor belt for some reason is longitudinal tear, when the conveyor is longer than 30m, the length along the conveyor, should be spaced a certain distance (e.g. 25-30m) to install a stop button.
Second, the installation of belt conveyor
Belt conveyor installation is typically carried out according to the following stages.
1 Install Belt Conveyor rack rack rack installation is started from scratch, and then install the sections sequentially intermediate frame, the final installation of the tailstock. A mounting rack, first to the entire length of the conveyor centerline pulling, due to keep the conveyor belt center line in a straight line is an important condition for the normal operation, so the installation of the rack sections, must be aligned with the centerline, but also put on airs leveling the rack on the centerline of the allowable error per meter captain of ± 0.1mm. However, the entire length of the conveyor frame centered on the error should not exceed 35mm. When all the single install and pinpoint can then be connected to each block.
2 Install drive unit mounted drives, you must pay attention to the belt conveyor belt conveyor drive shaft and perpendicular to the centerline, the width of the drive roller conveyor centerline central and coincides with the axis of the shaft line reducer parallel. Also, all shafts and rollers should be leveling. Axis horizontal error, according to the width of the conveyor, allowing the range of 0.5-1.5mm. Driving means installed at the same time, the tail wheel, etc. can be mounted tensioning device, the tensioning device of the axis of the drum, should be perpendicular to the centerline of the belt conveyor.
3 Install the rack rollers, gear and tensioning device after installation, you can install the upper and lower idler roller frame, so that the belt has a slow change to the curved arc, bending roll cage segment prop prop pitch as normal roller frame pitch 1/2 to 1/3. Idler installation, you should make it flexible rotary light.
4 belt conveyor belt in order to ensure the final pinpoint idlers and rollers are always in the center line of the operation, installation rollers, racks and rollers must meet the following requirements:
1) All rollers must line up parallel to each other and keep the horizontal level.
2) All the rollers are arranged in rows parallel to each other.
3) frame supporting structure must be linear, but keeping the horizontal level. To this end, the drive roller and roller frame after installation, should the centerline and the horizontal conveyor for final alignment.
5 is then fixed on the basis of the rack or floor. After a fixed belt conveyors can be fitted to the loading and unloading devices.
6 hanged hanged conveyor belt, the first shop in the strip conveyor idlers on load segments, Wai hold after the drive roller, and then deposited in the heavy segment on roller. Let hanging strips of use 0.5-1.5t hand winch. Connecting strip under tension when the roller moves the tensioning device shall limit position of the car and screw tensioning device To pull the gear shift direction; while picking up tight vertical move to the top of the drum unit to make . In previous belt tension should be installed reducer and motor, tilt conveyor confidential installed brakes.
7 belt conveyor installation, the need for idling test machine. In the idling test machine, pay attention to whether the running belt deviation phenomenon, driven part of the operating temperature, roller during operation activities, cleaning device and the guide plate in contact with the belt surface rigor, etc., while make the necessary adjustments, the components are normal after the operation can be performed with a load test machine. If a spiral tensioning device, with load test machine, but also once again its tightness adjustment.
Third, the maintenance of belt conveyors
To ensure reliable operation of belt conveyors, the most important is to detect and eliminate possible failures. This operation must always observe the work of transport, such as abnormal should timely manner. Mechanical workers should be regular inspections and check for any situations requiring attention or parts, this is very important. For example, a roller, does not seem very important, but a high-speed conveyor belt worn materials may soon put its shell worn out, the emergence of a blade, the blade could seriously damage an expensive belt. Workers trained or experienced staff to detect impending accident and take preventive measures. Belt conveyor belt conveyor costs in the entire account for a large proportion. In order to reduce the cost of replacement and repair belt, must pay attention to the operator and maintenance personnel for the operation and maintenance of conveyor knowledge training.
Accident Analysis and Prevention Belt
Reason
1.1 cause fire accidents
Underground mine Belt Conveyor is mainly fire-prone areas, because of its sudden, rapid development, pose a threat to the underground workers, and even induced due to the spread of fire and gas explosion is possible. Result in a fire accident was caused by the ignition source has enough calories to make tape burn. Skidding accidents are a major factor in generating enough heat, tape slippage is due to loose or tape jam large load caused by the tape tensioning device due to loose tension force generated by the elastic elongation of the tape is too small and too large; large load First, because of heavy start, the second is due to load is too large, three is the tape and active roller, driven roller idler friction between too small, such as tape inside surface water or oil, the driven roller bearing damage or childcare roll damage; tape jammed tape is mainly buried in coal or in the mud, so that the tape can not run. Another electrical equipment sparks, electrical short circuit may also cause the conveyor fire.
1.2 belt run cause of the accident
Runtime conveyor belt deviation is the most common faults. Deviation accidents occur frequently, it will affect the life of the conveyor, severe outage occurs or is likely to result in personal injury or death. Causing belt run three main reasons: First, the device itself aspects, such as the outer cylindrical drum larger error, roller rotation is not flexible, proactive and driven roller drum axis parallelism error is larger, etc.; Second, installation and commissioning aspects, such as roller, roller, rack installation does not meet regulatory requirements, in addition to vent coal biased position of the mouth, causing the tape to make partial load deviation; Third, maintenance, mainly due to the cleaning is not timely, transport Machine Drum Machine roller-stained dust, resulting in local diameter Ambassador belt run.
1.3 Tear cause of the accident
Tear tape main reasons: First funnel badly worn, resulting in waste rock and coal gangue direct hit tape or card tape and other items caused by tearing; Second, serious deviation is scraped tear tape; three tape joint strength is too low or because the load is too large to make tape joints broken.
Prevention
2.1 Fire accident prevention
1) using fire-retardant tape, even in the event of fire, it will not be able to control the fire rapidly.
2) strengthen the maintenance of electrical equipment, to prevent fires caused by electrical accidents.
3) strengthen management, to keep the roadway clean, tape no floating coal, water, no oil, no debris, nose, tail no heap coals. Improve the quality of operation and maintenance personnel to maintain good running condition conveyor.
4) conveying confidential installation inspection and monitoring devices, such as drive rollers and driven roller temperature monitoring devices, smoke alarms and fire in the event of an automatic sprinkler system.
2.2 Deviation accident prevention
1) confirmation by the state purchase of qualified products, avoid the lack of precision equipment manufacturing belt deviation caused by an accident.
2) Install the installation process to focus on the dimensional accuracy:
a. installation tape found at the deviation in the drum, the drum should be corrected and equal degree of levelness, drive pulley, steering cylinder installation requires its width tape centerline coincides with the centerline of not more than 2mm, its axis line and tape The vertical center line of the drum is no more than a fraction of the width, the horizontal roller shaft of not more than 0.3/1000.
b. If you find that tape to the side of the no-load total deviation should be adjusted idler bracket.
c. If you find no deviation tape at no load, and heavy load to the side of the deviation, indicating that the tape appeared partial load, coal hopper vent should be adjusted to the position.
3) strengthening routine maintenance:
a. timely removal conveyor rollers, roller, splice at other major parts of the dust, and prevent the roller, roller-stained dust lead belt run.
b. timely adjustment of tape running deviation phenomenon occurs, promptly check the tape edges and joints wear, identify problems and timely replacement and repair.
4) Install belt run the monitoring device, once the belt run off the alarm signal to alert maintenance personnel to take action.
2.3 Tear accident prevention
A) timely repair worn funnel, avoiding direct coal gangue and pound the tape.
2) the timely processing of deviation fault, not tear tape.
3) Set the tape longitudinal tear monitoring devices, found fault timely manner.
1.1 cause fire accidents
Underground mine Belt Conveyor is mainly fire-prone areas, because of its sudden, rapid development, pose a threat to the underground workers, and even induced due to the spread of fire and gas explosion is possible. Result in a fire accident was caused by the ignition source has enough calories to make tape burn. Skidding accidents are a major factor in generating enough heat, tape slippage is due to loose or tape jam large load caused by the tape tensioning device due to loose tension force generated by the elastic elongation of the tape is too small and too large; large load First, because of heavy start, the second is due to load is too large, three is the tape and active roller, driven roller idler friction between too small, such as tape inside surface water or oil, the driven roller bearing damage or childcare roll damage; tape jammed tape is mainly buried in coal or in the mud, so that the tape can not run. Another electrical equipment sparks, electrical short circuit may also cause the conveyor fire.
1.2 belt run cause of the accident
Runtime conveyor belt deviation is the most common faults. Deviation accidents occur frequently, it will affect the life of the conveyor, severe outage occurs or is likely to result in personal injury or death. Causing belt run three main reasons: First, the device itself aspects, such as the outer cylindrical drum larger error, roller rotation is not flexible, proactive and driven roller drum axis parallelism error is larger, etc.; Second, installation and commissioning aspects, such as roller, roller, rack installation does not meet regulatory requirements, in addition to vent coal biased position of the mouth, causing the tape to make partial load deviation; Third, maintenance, mainly due to the cleaning is not timely, transport Machine Drum Machine roller-stained dust, resulting in local diameter Ambassador belt run.
1.3 Tear cause of the accident
Tear tape main reasons: First funnel badly worn, resulting in waste rock and coal gangue direct hit tape or card tape and other items caused by tearing; Second, serious deviation is scraped tear tape; three tape joint strength is too low or because the load is too large to make tape joints broken.
Prevention
2.1 Fire accident prevention
1) using fire-retardant tape, even in the event of fire, it will not be able to control the fire rapidly.
2) strengthen the maintenance of electrical equipment, to prevent fires caused by electrical accidents.
3) strengthen management, to keep the roadway clean, tape no floating coal, water, no oil, no debris, nose, tail no heap coals. Improve the quality of operation and maintenance personnel to maintain good running condition conveyor.
4) conveying confidential installation inspection and monitoring devices, such as drive rollers and driven roller temperature monitoring devices, smoke alarms and fire in the event of an automatic sprinkler system.
2.2 Deviation accident prevention
1) confirmation by the state purchase of qualified products, avoid the lack of precision equipment manufacturing belt deviation caused by an accident.
2) Install the installation process to focus on the dimensional accuracy:
a. installation tape found at the deviation in the drum, the drum should be corrected and equal degree of levelness, drive pulley, steering cylinder installation requires its width tape centerline coincides with the centerline of not more than 2mm, its axis line and tape The vertical center line of the drum is no more than a fraction of the width, the horizontal roller shaft of not more than 0.3/1000.
b. If you find that tape to the side of the no-load total deviation should be adjusted idler bracket.
c. If you find no deviation tape at no load, and heavy load to the side of the deviation, indicating that the tape appeared partial load, coal hopper vent should be adjusted to the position.
3) strengthening routine maintenance:
a. timely removal conveyor rollers, roller, splice at other major parts of the dust, and prevent the roller, roller-stained dust lead belt run.
b. timely adjustment of tape running deviation phenomenon occurs, promptly check the tape edges and joints wear, identify problems and timely replacement and repair.
4) Install belt run the monitoring device, once the belt run off the alarm signal to alert maintenance personnel to take action.
2.3 Tear accident prevention
A) timely repair worn funnel, avoiding direct coal gangue and pound the tape.
2) the timely processing of deviation fault, not tear tape.
3) Set the tape longitudinal tear monitoring devices, found fault timely manner.
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