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.
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2013年10月28日星期一
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 .
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