Common problems and solutions for belt conveyors

1) Treatment measures for belt deviationFirstly, the equipment of belt conveyor shall be carefully checked before operation, which is the premise of smooth operation; Belt deviation is a common problem in the operation of belt conveyor. Scientific and reasonable treatment of belt deviation can effectively ensure the normal operation of production system. In order to deal with the belt deviation, the position of the driving roller and reversing roller of the conveyor should be adjusted first, and different treatment methods should be adopted according to different running directions. The specific performance is: adjust the position of the driving drum. If the head drum is to the right, the right bearing seat needs to move forward; The tension of the belt conveyor is an effective device to ensure that the belt always has sufficient tension; Adjust the belt diameter. If the belt diameter is inconsistent, it will also cause the deviation of transportation from the heading. The main solution is to effectively clean the coal dust on the drum surface and replace and treat the rubber coating in time.(2) Belt fracture treatment measuresBelt breakage is also a common fault, but in daily transportation, in order to reduce the occurrence of this fault, enterprises will require technicians to manage the conveyor scientifically and effectively. Try to reduce the blockage of coal on the belt. In addition, prevention and maintenance should be strengthened. When selecting tape, pay attention to selecting high-quality tape, test the tape regularly, and be careful when purchasing. Carefully check the appearance of the tape to avoid aging.(3) Handling measures for belt tearing accidentFor belt tearing accident, it is mainly effective prevention. First, the enterprise should repair the worn funnel in time to prevent the coal from directly hitting the belt; Secondly, the belt longitudinal tear monitoring device can be installed to solve the problem in time once it is found.(4) Belt slip treatmentThere are many ways to solve belt slip. By adjusting the tensioning device, the initial tension of the belt can be expanded, so as to reduce the conveying load of the belt conveyor or improve the capacity of the motor. When the belt slips during operation, the hydraulic tensioning belt conveyor can be selected to prevent slipping. Tapes can be checked regularly. In case of aging or deformation of the tape, it shall be handled in time. In addition, enterprise managers should strengthen the management of belt conveyors and deal with slip problems in time.

1) Treatment measures for belt deviationFirstly, the equipment of belt conveyor shall be carefully checked before operation, which is the premise of smooth operation; Belt deviation is a common problem in the operation of belt conveyor. Scientific and reasonable treatment of belt deviation can effectively ensure the normal operation of production system. In order to deal with the belt deviation, the position of the driving roller and reversing roller of the conveyor should be adjusted first, and different treatment methods should be adopted according to different running directions. The specific performance is: adjust the position of the driving drum. If the head drum is to the right, the right bearing seat needs to move forward; The tension of the belt conveyor is an effective device to ensure that the belt always has sufficient tension; Adjust the belt diameter. If the belt diameter is inconsistent, it will also cause the deviation of transportation from the heading. The main solution is to effectively clean the coal dust on the drum surface and replace and treat the rubber coating in time.(2) Belt fracture treatment measuresBelt breakage is also a common fault, but in daily transportation, in order to reduce the occurrence of this fault, enterprises will require technicians to manage the conveyor scientifically and effectively. Try to reduce the blockage of coal on the belt. In addition, prevention and maintenance should be strengthened. When selecting tape, pay attention to selecting high-quality tape, test the tape regularly, and be careful when purchasing. Carefully check the appearance of the tape to avoid aging.(3) Handling measures for belt tearing accidentFor belt tearing accident, it is mainly effective prevention. First, the enterprise should repair the worn funnel in time to prevent the coal from directly hitting the belt; Secondly, the belt longitudinal tear monitoring device can be installed to solve the problem in time once it is found.(4) Belt slip treatmentThere are many ways to solve belt slip. By adjusting the tensioning device, the initial tension of the belt can be expanded, so as to reduce the conveying load of the belt conveyor or improve the capacity of the motor. When the belt slips during operation, the hydraulic tensioning belt conveyor can be selected to prevent slipping. Tapes can be checked regularly. In case of aging or deformation of the tape, it shall be handled in time. In addition, enterprise managers should strengthen the management of belt conveyors and deal with slip problems in time.

Common faults and solutions of belt conveyor1.The motor cannot be started. This situation is usually caused by line fault or voltage drop. At this time, we should check the line problem to see if there is a load of electrical appliances, or if there is a fault in the voltage line.2.Motor heating problemAfter we use the belt conveyor for a period of time, sometimes the equipment will cause the motor overload because of overload or transmission obstruction. In addition, there is no timely addition of lubricating oil, resulting in increased power. At this time, dust will accumulate in the fan or radiator of the motor, and the heat dissipation condition will deteriorate. At this time, you can test the power of the motor, find out the reason for the load, timely supplement lubricant is the best way.3.Conveyor Belt off trackThis situation is generally because the axis and the centerline are not perpendicular, or the conveyor belt joint deformation and so on. At this time, we need to adjust the frame or roller to ensure that the joint box conveyor belt base is straight.4.Aging of belt conveyor beltThis is usually due to the belt and frame conflict, or because of poor maintenance, resulting in too much tension, equipment aging early, affecting work. Sometimes it is also caused by the conflict between conveyor belt and some solid hard objects. In short, we should pay attention to this part, because this is the most common problem. In case of such situation, we should adjust the instrument in time to avoid long-term deviation of conveyor belt. Do not allow belt to collide with solid hard objects during operation.

First, the belt conveyor belt does not rotate. After the motor starts, the idling belt of the drive drum slips and the belt can not start. This kind of failure is caused by the insufficient belt tension, the tension device is not adjusted well, the belt is too long, heavy load start, and the tail of the belt is piled up with coal.Second, belt conveyor belt deviation. The reason for deviation is that the belt has lateral force in operation, and the reasons for the lateral force are as follows: the conveyor is loaded on one side, not installed in the center position; The installation axis of the idler and roller is not vertical to the center of the conveyor belt; The height of the steel wire rope of the fuselage is inconsistent; The connection of conveyor belt is not correct and straight; The position of the coal unloading drum is not adjusted well; The tail drum and guide roller can cause belt deviation if they are not adjusted well.Third, the belt conveyor belt is easy to be disconnected. This is caused by the belt tension is too large, the joint is not firm, the quality of the buckle is poor, the belt is used too long, the maintenance quality is poor, etc. the method is to tighten the tension device, reduce the tension and replace the new belt in time, and strengthen the maintenance quality.Fourth, the sound of the belt conveyor reducer is abnormal. This is caused by excessive wear clearance of bearings and gears or loose screw of housing. The treatment method is to replace bearings, adjust clearance or replace integral reducer for overhaul.

Belt conveyor spreading is a common problem, to avoid the spreading is important for belt conveyor daily operation; There are many factors. But the key is to strengthen the daily belt conveyor maintenance. Let our technical team to show you what will occurred the problem and how to solve it; 1. Material spreading during belt deviation: the reason for belt deviation is that the height of two edges changes during belt running, one side is high and the other side is low, and materials are scattered from the low side. The treatment method is to adjust the belt deviation.2. Material spreading when the concave belt is suspended: when the curvature radius of concave section is small, the belt will be suspended. At this time, the grooving situation of the belt will change, because the belt has left the groove roller group, and the groove angle is generally smaller, so that some materials are scattered. Therefore, in the design stage, it is necessary to adopt a larger radius of concave curvature to avoid such a situation. For example, in order to shorten the tail car on the mobile mechanical ship loader and stacker reclaimer, the concave section here is designed as a transition zone without circular arc. When the belt width is small, it is easy to scatter materials.3. Material spreading at the transfer point: the material spreading at the transfer point is mainly at the drop hopper, guide chute, etc. If the belt conveyor is seriously overloaded, the rubber apron of the guide groove of the belt conveyor is damaged, the steel plate at the guide groove is far away from the belt when it is designed, and the rubber apron is relatively long, so that the materials can be washed out of the guide groove. The above situation can be solved by controlling the transportation capacity and strengthening the maintenance.

As you may know belt conveyor is composed by many different accessories, any problem caused by the accessory will influence the normal operation. Therefore, knowing which accessory will cause the problem, and the right treatment for it is quite important. SKE is showing you the common faults or problem caused by the conveyor accessories and the treatment methods to solve it;There are many kinds of conveyor accessories, but the main problems are as follows:1. The motor can not be started, or it can be started slowly.Treatment method：A. check the voltage and the electrical line on the conveying equipment;B. Check the electrical appliances over load;C. Reduce the operation times of conveyor when necessary;2. The motor is hot .Treatment method: A. remove the dust around the motor;B. Measure the motor power and check the cause of overload;C. Add lubricating oil to the transmission parts of the conveying equipment;3. Reducer overheatingTreatment method:A. the oil quantity in the machine should be injected according to the specified requirements;B. Clean the interior regularly and change the oil or bearing in time;4. The conveyor belt is running and slippingTreatment method: A. adjust the frame or pulley to keep it straight;B. Adjust the idler and correct the conveyor belt;C .Ensure that the joint is perpendicular to the center of the conveyor belt;D. Adjust the position of coal falling point;5. Aging and tearing of conveyor beltTreatment: A. keep the conveyor belt according to the requirements of the manufacturer;B. Timely advise professional personnel to replace, pay attention to prevent the belt hanging on the fixed components, or the net belt falling into the metal components;C. Try to avoid short distance laying;6. Conveyor belt Broken Treatment: A. timely replace the aged and torn conveyor belt;B. Select materials with stable physical properties, pay attention to waterproof and cold proof;C. The joint Department should check it regularly.

Belt conveyors used to transport minerals are to be found all around the world in a large number of surface and underground mining operations.  And conveyor belt is a critical component part, its quality and good performance will influence the conveyor working condition, however there will be some conveyor belt breaking occurred while the belt conveyor is under operation. Find out the reasons why it happens, it can efficiently help to maintain it during it is operation.   There are probably the following reasons for conveyor belt breakage.(1) The gear reducer is damaged, the fluid coupling of the hydraulic coupling or the motor reverses.(2) Quality problems of conveyor belt joints. Conveyor belt joints are divided into mechanical joints and vulcanized joints. The quality of mechanical joints is far inferior to vulcanized joints, so it is rarely used now. As far as the vulcanization joints are concerned, if the vulcanization temperature and vulcanization pressure are not controlled as required, the temperature and pressure are unevenly distributed on the vulcanization plate, the holding time of the temperature and pressure is unreasonably set, and the use of unreasonable materials, etc., has influences in the vulcanization process. (3) The transportation load suddenly increases due to the involvement of other things during transportation. For example, large pieces of gangue or other objects of particularly high mass suddenly mix in the coal being transported.(4) The stress changes greatly when starting and stopping. The start and stop of the belt conveyor will also cause the conveyor belt to break. It is generally best to start the conveyor under non-load.(5) The quality of the conveyor belt is not good, the service life of the conveyor belt is too long, the conveyor belt is overloaded for a long time, and the daily maintenance is not in place.(6) Uneven material distribution and deviation of conveyor belt. The belt conveyor has an empty section and an overload section, so that the conveyor belt is unevenly stressed.In order to prevent the breakage accidents caused by these reasons, in addition to manual inspection and maintenance, it is particularly important to arrange breakage protection devices along the conveyor line. Because it can avoid unexpected accidents and stay on standby at any time. When the conveyor belt is working normally, it does not affect the material transportation. When a broken belt accident occurs, it will immediately act to quickly grasp the broken and falling conveyor belt.SKE machinery is focusing on bulk material belt conveyor handling products and solutions, we have pre-sales technical supporting team and also after-sales service team with long years experience. Our service team will help you to solve out the problem during the conveyor in operation.

Belt Conveyor systems are the most versatile and simplest material handling systems，there are some problems may occurred while using a belt conveyor system, such as material spilling. The belt conveyor spilling is a common problem, and there are many reasons caused it. But the point is to strengthen daily maintenance and maintenance.1. Spilling material at the transfer point ;The spilling material at the transfer point is mainly in the hopper, guide trough, etc. If the belt conveyor is seriously overloaded, the rubber guide plate of the material guide groove of the belt conveyor will be damaged. When the steel plate at the material guide groove is designed farther away from the belt, the rubber skirt plate is longer, so that the material rushes out of the material guide groove. The above situation can be solved in controlling the delivery capacity and strengthening maintenance.2. Spilling material when the belt of the concave section is suspended The belt section of the concave section will cause the belt to hang when the radius of curvature of the concave section is small. At this time, the situation of the belt forming groove changes, because the belt has left the grooved roller group, the general groove angle Smaller, so that part of the material is spilled out. Therefore, in the design stage, a larger radius of curvature of the concave section should be used as much as possible to avoid such a situation. For example, in order to shorten the tail car on the mobile mechanical ship loader and stacker-reclaimer equipment, the concave section is designed as a non-circular arc transition section, and it is easier to spread the material when the margin of the belt width is small.3. Sprilling belt when running off the belt The spilling material when running off the belt is because the height of the two edges changes during running, one side is high, and the other side is low, the material is sprinkled from the low side, the processing method is to adjust the belt’s off-tracking.We SKE machinery is focusing on various belt conveyors design and manufacturing, our engineering team can help our clients to solve many different problem whiling using a belt conveyor system. Please feel free to contact us for more information if any interest.

Belt conveyor maintenance work is quite important for conveyors regular operations, SKE company as the professional bulk material belt conveyor system products suppliers in China will show you the details:1. Daily maintenanceCheck the joints of the conveyor belt for any abnormalities, such as cuts, cracks, etc., and damage caused by other reasons. Whether there is abrasion on the upper and lower layers of the conveyor belt, and whether there is abrasion on the sides of the conveyor belt. Whether the rubber scraper is severely worn and cannot be in close contact with the conveyor belt. If so, the rubber scraper should be adjusted or replaced. Keep each idler rotating flexibly and replace the idler or damaged idler in time. Prevent the deviation of the conveyor belt, keep the conveyor belt running on the center line, and ensure the groove angle.2. Regular maintenanceLubricate various bearings and gears regularly. Remove and clean the reducer, check the wear condition of the gear. If the wear is severe, replace the new gear.All anchor bolts and beam coupling bolts are re-oiled and fastened. Repair or replace other worn parts or components. Repair or replace the conveyor.3. Deviation maintenance of conveyor beltBelt conveyors often encounter problems with deviations in the conveyor belt. There are several reasons for deviations in the conveyor belt with a roller groove angle of 30-35 °:1) The installation center line is not straight.2) The conveyor belt itself is not bent or straight.The belt buckle or the cut of the belt is not at right angles to the width of the belt, so that the tensile force is uneven. When running, when the joint is running, the deviation will occur. To deal with this situation, you can straighten the belt, re-gluing or re-tacking.3) The centerline of the pulley and the centerline of the conveyor belt are not at right angles. This situation is mainly due to the incorrect installation of the rack. Although the front and rear positions of the pulley and bearings can be adjusted, the movement distance is limited. The axial center of the head pulley must be consistent with the axial center of the tail roller.4) Where the conveyor belt runs sideways on the pulley, tighten the bearing seat on the other side to increase the tension on one side of the conveyor belt, and the conveyor belt moves to the side where the pulling force is small.5) During installation, the axis of the idler group is not perpendicular to the centerline of the conveyor belt, which will cause the deviation. To which side of the conveyor belt is deviation, move the idlers a bit in the direction of the conveyor belt. Generally, it can be corrected by moving a few idler groups. .6) The pulley is not leveled and caused the belt to run off. If the installation is out of order, the machine should be stopped and leveled. If the outer diameter of the pulley is not consistent, the outer circle of the pulley must be reprocessed.7) The bonding material on the surface of the pulley makes the pulley a conical surface, which will cause the conveyor belt to deviate to one side. In particular, when the conveyed material has high humidity and the seal at the tail of the machine is not good, it is easy for the material to fall into the no-load conveyor belt and adhere to the roller, causing the conveyor belt to run off. Therefore, the cleaning device must be inspected frequently and manually cleaned.8) The conveyor belt deviates as soon as the load is applied. This situation is generally due to the fact that the feeding point of the material is not in the center of the conveyor belt. The position or structure of the baffle at the feed inlet should be changed.9) The height of the two sides of the frame makes the conveyor belt not in the same level, and the conveyor belt load moves to the lower side during operation, which leads to deviation. At this time, the frame must be re-soldered or the idler set plus shims must be leveled.10) The empty deflection occurs when the conveyor belt is unloaded, and the material can be corrected. This phenomenon is generally caused by too much initial tension, which can be adjusted appropriately.

First, twisting. twisting is a problem that often occurs during the operation of a tubular belt conveyor. This kind of event can only be avoided by paying attention to care and maintenance in the usual way and ensuring the accuracy during installation. Many reasons can cause the conveyor belt to twist, which should be analyzed based on the specific situation. (1) When installing the conveyor, it is easy to cause non-parallel conditions at the axis of the end and end of the belt to cause twisting. The solution is: to ensure accuracy during installation, adjust the parallelism of the axis of each roller and the straightness of the longitudinal axis of the head and tail frame to minimize the dimensional deviation; install the deviation switch to reduce the damage caused by friction between the bracket and the belt; Attention must be paid to inspection and supervision. (2) The torsion of the tubular belt conveyor can be restored by adjusting the idler group. Adjusting the rotation angle of the idler counterclockwise or clockwise can make the round tube conveyor belt subject to the correcting force in the opposite direction. In general, the lower idlers of a polygonal roller group subject to high pressure can be set with idlers.(3) Adjusting the nut or adjusting washer is also an effective solution. First, determine the required idler, loosen the fastening nut, and then place the adjustment washer under the fastening nut or adjust and turn the adjustment nut and tighten it, then this idler has the effect of adjusting idler. (4) The following methods can be used for short-distance tubular pipe belt conveyors. The polygon idler and its front panel are provided with an adjustable idler capable of rotating about a vertical axis for easy operation. After rotating and adjusting the idler to the proper position, the nut is tightly tightened, so that the idler continuously exerts a corrective force on the conveyor belt and the adjustment is successful.(5) If one side of the conveyor belt is twisted due to pressure of a large amount of material, a material stopper should be appropriately added to change the falling direction and position of the material, and the center of the conveyor belt should be the material falling point as much as possible.Second, the belt slipped. (1) If the belt is slipping when using the counter weight tensioning device on the tubular belt conveyor, the method that can be taken is: slowly increase the counter-weight until the belt does not slip. But avoid excessive tension caused by excessively increasing the counter-weight. (2) If the belt slips under the condition of the hydraulic tension or spiral compression of the tubular belt conveyor, the method that can be adopted is to increase the tension. If the tensioning stroke is sufficient, adjust it; if the tensioning stroke is insufficient and the belt has permanently deformed, and it should be cut and then vulcanized.Third, if there is a failure of the driving device, not only the maintenance costs are expensive, but the process is difficult, and the impact on production development cannot be underestimated. The faults of the driving device are mostly divided into the followings: (1) Frequent start during operation and excessive overload will cause damage to the motor. The solution to this situation is to avoid frequent starts and excessive overload. (2) Before starting the motor, the material on the belt is not cleaned up, and the load on the motor is increased, which may easily cause damage to the motor. The solution to this situation is to monitor the changes in current generated during the operation of the device in real time. If abnormal conditions are found, the drive device should be inspected in all directions immediately. (3) Problems in the design, due to incomplete considerations, make the motor's capacity low, and the load capacity during operation is also reduced. The drive motor emits strange sounds and continuous heating, which makes it unable to work normally. The method to deal with this situation is to monitor the it in time;

Question:What are Precautions for safe operation of tubular pipe belt conveyor?Answers:First, environment and clothing. Do not place objects beside the machine at will to make the working environment orderly and avoid accidents such as falls. On the clothing, it is required to wear a tight-fitting tight-fit shirt, fitted trousers, and the buttons on the collar of the sleeve must be fastened. Wear a safety helmet to prevent accidents from the equipment such as being rolled into the machine.Second, the machine can only be started after a comprehensive inspection of the system. For the upstream equipment of the machine, the iron remover needs to be inspected. If foreign materials such as steel bars and iron pipes enter the conveyor belt, it will cause extremely serious consequences. Before starting, you must ensure that the protective devices are complete.Third, it must not be overloaded. If it is overloaded during operation, the conveyor belt will expand, which will increase the resistance of the idler and affect its smooth operation. The filling rate of the tubular belt should not be higher than 75%, and the flow of the discharge gate should be controlled.Fourth, in the transition section, in order to prevent the belt from wearing due to the contact between the rack and the belt, the material should always be located in the center of the belt.Fifth, if abnormal phenomena such as heat, noise or vibration are found during the inspection, the machine should be shut down and inspected immediately. After the cause of the fault is found and eliminated, the machine can be started again.Sixth, ensure that the discharge openning is closed, and the materials in the tubular conveyor belt can be emptied before stopping.Seventh, when cleaning the machine, be sure to turn off the start switch of the motor, and it is best to turn off the main power switch. Pay attention to the use of masks, safety shoes, dust-proof goggles and gloves during cleaning.Eighth, when the operating environment changes, you should immediately carefully check the belt distortion and deviation, and make repeated adjustments to ensure that the tubular belt conveyor can operate normally.Ninth, when inspecting and maintaining the tubular pipe belt conveyor, be sure to turn off the start switch of the motor, and it is better to turn off the main power. During the inspection, gloves, masks, dust-proof glasses and safety shoes must be worn. During the operation of the machine, do not touch the cleaner, belt and rotating parts to prevent serious injuries caused by rolling the machine.

Coal pipe plug is one of the component of the coal conveyor handling solution. There will be some problems while the coal belt conveyor handling system is in operation. What is the cause of the coal pipe plug? What are the processing methods?Reason:1) Excessive coal sticking in the falling coal pipe; 2) Large objects are stuck in the falling coal pipe; 3) Interlocking failure; 4) The equipment is not started according to the regulations 5) The sealing of the guide belt of the next belt conveyor is too wide ;6)The baffle is in the wrong position; 7) The airlock counterweight is too large ;8) The coal feeding is too largeApproach:1) Clean up the sticky coal; 2) Manage the falling coal pipe in time; 3) Check and Maintain the interlocking; 4) Correct in time; 5) Maintain and adjust the width of the sealing sheet; 6) Adjust the position of the baffle; 7) maintain and readjust the airlock counterweight ;8) Reduce Coal supply

Q:Why does the belt conveyor for coal transportation solution fail to start and how to deal with it?Answer: The reasons why the belt conveyor cannot start:1), the motor loses power;2) the chain is turned on but the previous equipment is not started; 3) the button is not reset after stopping; 4) the return pulley is stuck or frozen; 5) The pull switch or deviation switch is not reset after the action; 6) Some objects stuck in the falling coal pipe; 7) Damage to the fluid coupling plug; 8) Excessive coal pressure on the belt;Approach:1) Contact the electrician engineer for power 2) Unlock the chain or start the previous equipment; 3) Reset the stop button 4) Clear the jam 5) Reset the pull switch or deviation switch 6) Clean the falling coal pipe 7) Maintain the coupling plug  8) Minus part of the briquette;

Q:What are the reasons for the tear of the belt and how to deal with it?Answer: The reason for the tear of the belt:1) Large objects are stuck in the falling coal pipe or coal pouring tank. 2) The liner or baffle of the falling coal pipe falls off. 3). The belt deflection is in serious contact with the bracket. 4) Debris is stuck on the return belt. 5), the coal plough, the wiper presses the hard block to the belt 6), the roller (pulley) is drawn into the hard bar.Treatment method:1. Strengthen the monitoring and remove the sundries in time. 2. Defects are found in a timely manner, let maintenance engineer to deal with them. 3. Adjust the deviation in time. 4. Intensify inspections and clean up in time.5. Stop processing immediately.SKE company will give you the right design for belt conveyor solution.