The breakage of the conveyor belt due to wear is a common problem encountered during the operation of the belt conveyor, and it will bring considerable economic losses. This article shares the types, hazards, causes, and prevention of conveyor belt wear.
5 Types Of Rubber Conveyor Belt Wear
1. The running speed of the roller is not synchronized with the conveyor belt, and the roller and the conveyor belt will have relative frictional resistance. Especially when the material on the conveyor belt is heavier, the friction between the conveyor belt and the roller is greater, which will increase the wear of the conveyor belt and affect the service life of the conveyor belt.
2. The movement centerline of the conveyor belt is inconsistent with the idler roller. This way of movement will cause the weight of the conveyor belt to be unevenly distributed, and uneven wear on both sides of the conveyor belt will cause serious local wear of the conveyor belt.
3. The unqualified installation process of the belt cleaner leads to extra wear of the conveyor belt.
4. The large hard material falling from the top conveyor belt will have an impact on the bottom conveyor belt, which will cause the conveyor belt to wear.
5. There are anchor bolts and other metal objects in the materials conveyed by the conveyor belt, which will cause wear to the conveyor belt.
4 Types Of Risks Due To Belt Wear
1. Reduce the service life of the conveyor belt
When the conveyor belt is worn for a long time, the steel cord in the carcass will be exposed to the outside, which will not only corrode the steel cord, but also cause the steel cord of the conveyor belt to break and reduce the service life.
2. Conveyor belt is not easy to splice
When the conveyor belt is in normal operation, the splicing parts of the conveyor belt will wear out and become thinner. When the conveyor belt with inconsistent thickness at both ends passes the idler roller, the conveyor belt will scratch with the idler roller, especially the joint part of the conveyor belt.
3. Conveyor belt strength is reduced
If the steel cord of the conveyor belt is exposed to the outside after abrasion, and chemically reacts with air and slime, the steel wire may break, which will not only shorten the life of the conveyor belt, but also cause production accidents.
4. Conveyor belt deviation
The supporting rollers under the conveyor belt support the conveyor belt. If the supporting force of the supporting rollers on the conveyor belt is not uniform, the two sides of the conveyor belt will have different wear. When the thickness on both sides of the conveyor belt is inconsistent, the conveyor belt will The side with higher tensile strength is offset.
5 Reasons For Conveyor Belt Wear
1. Irregular installation of roller
When the construction personnel fail to follow the process and technology when installing the idler, the axis of the idler will not coincide with the centerline of the conveyor belt. When the conveyor belt is running, the frictional force of the idler will produce an axial component of the conveyor belt. Cause the conveyor belt to wear.
2. Roller rotation is not flexible
When the roller is running normally, if the quality of the roller is unqualified, it will cause the bearing to be sealed or damaged, etc., which will make the speed of the roller cannot be synchronized with the conveyor belt.
3. Conveyor belt deviation
The installer cannot meet the installation requirements when installing the idler, which causes uneven supporting force of the idler on the conveyor belt. When the conveyor belt is running normally, the friction between the conveyor belt and the idler is severely worn.
4. Poor wear resistance of conveyor belt
In mining conveyor belt processing, flame retardants are added to the conveyor belt, and the flame retardant will weaken the elastic strength of the belt, causing the conveyor belt to fail to meet the standard requirements.
5. Unreasonable belt tension
Because the belt conveyor tension is mainly adjusted manually, the belt tension is unreasonable. When the belt tension is small, the conveyor belt will shake when transporting materials. When the tension of the conveyor belt is too large, the friction between the conveyor belt and the roller will increase, and serious wear of the conveyor belt will occur.
How To Prevent Belt Wear
In order to reduce the slope before and after the conveyor belt, the staff should conduct a site survey before construction to ensure that the head and tail of the conveyor are on the same level to avoid local force concentration.
Ensure that the rotation speed of each group of rollers is consistent with that of the conveyor belt. After each group of rollers is installed, a special person should be arranged to verify it, and at the same time, ensure that the axis of the rollers is perpendicular to the conveyor belt. During the period from transportation to trial operation, the staff should make statistics on the speed of each group of rollers, and find that the rollers with a slower speed are processed in time.
In order to prevent the deviation of the conveyor, an anti-deviation device can be installed on the conveyor every 100m. The device is mainly composed of a belt jump start and stop device, an anti-deviation roller and other parts, as shown in the figure, when the conveyor When the machine has serious deviation, the belt jump start-stop device can immediately cut off the power of the conveyor and adjust it manually. When the conveyor deviation is not serious, it can be adjusted by the anti-deflection roller.
Use the vulcanization method to splice the belts, and ensure that the belt surfaces at both ends of the vulcanized conveyor belt are flat and the center lines coincide. The thickness of the belts at both ends should be within the scope of technical requirements.
In the daily production process, the maintenance personnel should use the maintenance time to maintain the conveyor belt and the idler, and replace the idler that does not meet the requirements or damage in time to ensure the sensitivity of the idler. When the belt conveyor is working, a special person should be arranged to observe the materials on the conveyor belt, and it is found that there are large pieces of material, anchor bolts, and ironware to be cleaned in time, and an iron remover is installed every 500m above the conveyor belt.
At the overlap of the conveyor belt, the vertical height of the two conveyor belts should not be too large to prevent the material from the upper conveyor belt from having too much impact on the lower conveyor belt. At the same time, a buffer device is installed at the overlap position to affect the bulk of the material. Speed reduction effect.