How to judge whether the conveyor belt needs to be replaced?

1. The degree of wear of the conveyor belt:
Surface wear: Observe whether the rubber covering layer on the surface of the conveyor belt has obvious signs of wear, such as scratches, flattening, thinning, etc. If the wear is severe, the thickness of the rubber layer will be reduced to a certain extent, which will affect the strength and service life of the conveyor belt. Generally, when the wear reaches about 30% of the original conveyor belt thickness, you can consider replacing it.
Edge wear: The edge of the conveyor belt is susceptible to friction and collision, so special attention should be paid to the wear of the edge. If the edge is severely worn, broken, torn or deformed, it may cause the conveyor belt to deviate, leak material and other faults, affecting production efficiency and product quality. At this time, it is also necessary to consider replacing the conveyor belt.
2. Elongation of the conveyor belt: The conveyor belt will elongate due to force during use. If the elongation exceeds a certain limit, the conveyor belt will loosen and affect its normal operation. Generally speaking, if the length of the conveyor belt is stretched by more than 5% of its original length, it is necessary to consider replacing it.
3. Degree of aging of the conveyor belt:
Appearance changes: After the conveyor belt ages, cracks, hardening, softening, powdering, discoloration, and mildew may appear on the surface. These changes will cause the performance of the conveyor belt to decline, such as reduced strength, poor elasticity, weakened wear resistance, etc., thus affecting its service life. If these signs of aging are found on the conveyor belt, its degree of aging should be evaluated in time and replacement should be considered.
Physical property changes: In addition to changes in appearance, the aging of the conveyor belt may also cause changes in its physical properties, such as a decrease in tensile strength, tear strength, hardness and other indicators. By conducting regular physical property tests on the conveyor belt, the aging of the conveyor belt can be understood in time, and whether it needs to be replaced can be determined based on the test results.
4. Conveyor belt failure:
Joint failure: The joint of the conveyor belt is a part prone to problems. If the joint is not firm, loose, cracked, degummed, etc., it will cause the conveyor belt to break during operation, affecting the normal production. Therefore, it is necessary to regularly check the joint condition of the conveyor belt to detect and deal with joint failures in time. If the joint is severely damaged and cannot be repaired, the conveyor belt needs to be replaced.
Deviation failure: Conveyor belt deviation is one of the common faults. If the conveyor belt often deviates and cannot be solved after adjustment, it may be caused by the quality problem of the conveyor belt itself, installation problem or failure of other components. In this case, it is necessary to conduct a comprehensive inspection of the conveyor belt to find out the cause of the deviation and decide whether to replace the conveyor belt according to the specific situation.
Other faults: In addition to joint failure and deviation failure, the conveyor belt may also have other faults, such as tearing, jamming, slipping, etc. If these faults occur frequently and cannot be solved by maintenance, it may be that the conveyor belt has been severely damaged and needs to be replaced with a new conveyor belt.
5. Use environment and conditions:
Temperature: If the conveyor belt is used in a high temperature environment, it will accelerate the aging and wear of the rubber and reduce the service life of the conveyor belt. Therefore, for conveyor belts used in high temperature environments, it is necessary to select high temperature resistant materials and appropriately shorten the replacement cycle according to actual conditions. On the contrary, if used in a low temperature environment, the conveyor belt may become hard, brittle, and easy to break, and it is also necessary to pay attention to inspection and replacement.
Humidity: A high humidity environment will make the conveyor belt susceptible to moisture, causing the canvas layer to swell, the rubber covering layer to mold or corrode, and affect the performance and life of the conveyor belt. In a humid environment, it is important to keep the conveyor belt dry and avoid exposing the conveyor belt to humid air for a long time. Measures such as adding ventilation equipment and using desiccants can be taken to reduce the humidity of the environment. If the humidity has a greater impact on the conveyor belt, it may need to be inspected and replaced more frequently.
Corrosive substances: If there are corrosive gases (such as sulfur dioxide, chlorine, etc.) or liquids (such as acids, alkalis, etc.) in the working environment, the metal parts (such as rollers, rollers, etc.) and rubber coverings of the conveyor belt will be corroded, seriously affecting the service life of the conveyor belt. For working environments with corrosive substances, it is necessary to select corrosion-resistant conveyor belts and equipment parts, and take effective anti-corrosion measures, such as galvanizing and painting metal parts, and regularly cleaning and anti-corrosion maintenance of the conveyor belt and equipment. If the corrosion is severe, the conveyor belt may need to be replaced in advance.
Material properties: The properties of the conveyed material will also affect the service life of the conveyor belt. For example, factors such as the particle size, hardness, humidity, and temperature of the material will affect the degree of wear of the conveyor belt. If the conveyed material has a larger particle size, higher hardness, higher humidity, or higher temperature, it will accelerate the wear and aging of the conveyor belt, and it will need to be inspected and replaced more frequently.
Operating time and frequency: The operating time and frequency of the conveyor belt are also important factors in determining whether it needs to be replaced. If the conveyor belt runs continuously for a long time, it will wear faster than when it runs intermittently; and conveyor belts with high frequency of use, such as running multiple shifts a day, require more frequent maintenance and inspection than conveyor belts with low frequency of use. Generally speaking, it is recommended to conduct a comprehensive inspection of the conveyor belt at least once a year, and decide whether to replace it based on the actual situation.