How to Correctly Make Maintenance for Belt Conveyors

As we all know, correct and proficient operation is the guarantee for the efficient working of the belt conveyor.

Excluding the impact from the sundries in the material, in order to improve the conveying efficiency, operators should pay attention to the following points:

1. Make fix and appropriate installation of the belt conveyor machine.
2. Check the belt conveyor before operation.

Make sure the protecting device is all ready, the belt tension is adjust to appropriate degree and so on.

3. The belt conveyor should start with non-load and then be fed after its normal operation.
4. If there are several belt conveyors operate in series, then they should be started in order from the discharging port. Do not feed materials until all conveyors are operated normally.
5. The working condition of the belt conveyor machine. The temperature of the conveying material should between 50℃ and -10℃, and materials with acid and alkali should not be conveyed.

For more information, please visit http://www.pkbeltconveyor.com.

Brief Introduction of Belt conveyor Sweeper Type

Belt conveyor sweeper is one important part of belt conveyor, there are totally three types of belt conveyor sweeper: carbide belt conveyor sweeper, H type alloy rubber belt conveyor cleaner, P type alloy rubber belt conveyor cleaner.

1.Carbide belt conveyor sweeper

The Carbide belt conveyor sweeper is installed at the head pulley with the texture of scraper adopting carbide alloy. There are generally two types of it: single piece belt conveyor sweeper and double pieces belt conveyor sweeper. It realizes thoroughly material cleaning by changing the pressure beard by the conveying belt from the scraper through adjusting the balancing weight.

2.H type alloy rubber belt conveyor cleaner

It is installed at the head place of the pulley close to the conveying belt, principally applying the rubber elasticity. Meanwhile, the scraper texture is changed to Carbide scraper from rubber. It is placed close to the surface of the conveyor belt after the separation of the material with the conveyor belt.

3.P type alloy rubber belt conveyor cleaner

It is also installed at the head place of the pulley with the installation site similar to that of the spring sweeper. Besides, it shares the sweeping principle with the H type alloy rubber cleanser.

For more information, please visit http://www.pkbeltconveyor.com.

What Causes the Failure of Belt Conveyor Components and the Solution

Basically, we cannot avoid the failing in work of belt conveyor. The following several points are common phenomenon of belt conveyor components failure analyzed by PK Machinery. We hope to bring you some assistance.

1. The belt fails in rotating;

The drive pulley belt slips and turns without moving forward after the starting of the belt conveyor motor. The belt failing in rotating is due to the insufficient belt tension, overlong of the belt, inappropriate adjustment of the tension equipment, too frequent start-up and the coal piled up at the end of the belt conveyor.

2. Belt is easy to break ;

This problem is mainly caused by the large belt joint, poor belt buckle quality, long time use of the belt and the unprofessional belt maintenance. In this case, we should tighten the tension equipment, change high quality belt in time and improve the maintenance level.

3. Abnormal sound from the reducer

One possible reason is that the abrasive wear of the bearing and gear causes a large gap between them. Or it is because the screw is too loose. In this case, we should replace the bearing, mend the gap and maintain or replace the reducer.

4. Temperature of the reducer rises too fast

It is due to the over mount of lubricant, poor heat dispersion, speed reducer burying in coal. The lubricant oil amount should be reduced and the coal should be removed to solve this problem.

5. Lubricant leakage of the reducer

The main reason includes the sealing ring is damaged, the reducer surface is not flat and the bolt is too loose. In this condition, we should change the sealing ring, tighten the connecting surface and the bearing cap bolts.

6. The roller failed in rotating

If the coal powder falls into the roller sealing ring, it will block the conveyor roller and cause strong stress, then the roller would not rotate and even bend. And thus bring damage to the roller bearing. If this happened, we should replace the roller, lower the height of discharging point and the landing point, or use impact roller at the landing point.

Failure Analysis of Belt Conveyor Components

In the process of operation, failure of belt conveyor is inevitable, here PK Machinery will analyze the cause of belt conveyor failure.
1.Belt doesn’t rotate
After start-up of the belt conveyor motor, the belt of drive pulley idles and slips, belt can’t rotate, this failure is caused by insufficient belt tension, improper adjustment of tension device, overlong length, overloading start-up, coal piled in the tail part of belt conveyor.
2. Belt is easy to break
It is due to the large belt tension loose joint, poor quality of belt buckle, belt using for a long time, poor maintenance of belt, the solution is to tighten tension device, lower the tension ,change the new belt in time and strengthen the maintenance quality.
3. Reducer occurs abnormal sound.
The reason is due to the larger gap caused by serious wear of bearing and gear or screw is too loose, the solution is to replace the bearing, adjust the gap and repair or replace the whole reducer.
4.Reducer heats up too fast.
The reason is because of too much oil, poor heat dissipation performance, speed reducer is buried in coal pile, the solution is to adjust oil amount and remove the coal.

5.Reducer oil leakage.
The reason is due to the damage of sealing ring, the connecting surface of reducer is not uneven, the bolt is too loose, the solution is to replace the sealing ring, tighten the connecting surface and the bearing cap bolts.

 

6.Roller doesn’t rotate.
It is because of the damage of roller bearing, when coal powder enters into the roller sealing ring on both sides, it will be blocked and not rotate which makes the roller bend due to the large stress. The solution is replacement roller, reduce the height of discharging point and the landing point, or use the shock-proof roller at the landing point.