Treatment method of belt conveyor wear phenomenon

 

Belt conveyors play a very important role in material transportation. Based on this important role, we need to always pay attention to the operating conditions of the belt conveyor during the operation of the belt conveyor. The more vulnerable part of the belt conveyor is the conveyor belt on the equipment. It should be noted that the conveyor belt in the belt conveyor is very expensive, and the high-quality conveyor belt is more expensive, so for the use of the belt conveyor Attention should be paid to the wear and tear of the conveyor belt for the operation and maintenance costs. It is best to effectively prevent or reduce the wear of the conveyor belt. The article systematically analyzes the various types of belt conveyor belts and the causes of wear.

  In the mining field, the main purpose of the belt conveyor is to transport materials and articles. There are two main transport items. The first is broken materials; the second is finished materials.

  Belt conveyor has three main advantages for its wide application. The first advantage is that the belt conveyor has a long transportation distance; the second advantage is that the belt conveyor has a large amount of material transportation; the third advantage is that the belt conveyor can effectively transport materials.

The design and application of belt conveyors in my country is relatively late. The design of belt conveyors began in the 1980s. At this stage, the design of belt conveyors in my country is already very advanced, and it is also a leader in the world. status. The transportation speed of belt conveyors in my country can reach 5.9m/s, mostly between 1.5m/s and 4.1m/s. Due to the particularity of the long-distance belt conveyor, the cost of the conveyor is increasing, and the part of the increase in the cost is the conveyor belt. Therefore, in order to reduce the cost of belt conveyors, we must find a way on the conveyor belt.

  1 Conveyor belt in belt conveyor

  Conveyor belt is a standard elastomer equipment. It is the most important part of the conveyor and a typical constant torque load. It is also one of the most expensive parts, and its price accounts for 1/4 to 1/2 of the total price of the conveyor. . In the belt conveyor, the conveyor belt pulls the components in time, and at the same time is the bearing component; it not only plays the role of transmitting power and movement, but also plays the role of supporting the load of the material. The conveyor belt is composed of a core body and a cover layer. The core body bears the tensile force, and the cover layer protects the core body from damage and corrosion.

  2 Reasons for the wear of the conveyor belt during operation

 

Due to the uninterrupted long-distance transportation of materials, the belt conveyor will fatigue the conveyor belt to a large extent. Once this fatigue phenomenon cannot be fundamentally solved, the conveyor belt will wear out. With regard to the causes of wear of the conveyor belt in the belt conveyor during operation, the article mainly analyzes from three aspects.

  The first aspect is that the wear of the vulcanized joint at the joint of the conveyor belt in the belt conveyor can cause the wear of the conveyor belt.

  The second aspect is that the abrasion of the skirt part of the belt conveyor causes the abrasion of the conveyor belt.

  The third aspect is the wear of the conveyor belt in the middle of the belt conveyor.

  2.1 The wear of the vulcanized joint at the joint of the conveyor belt in the belt conveyor can cause the wear of the conveyor belt

  In the process of adhesion of conveyor belts, vulcanization is an indispensable job. Due to the different materials of conveyor belts, inappropriate vulcanization methods will be selected, and the vulcanized joints at the joints will wear out. It will increase the wear at the joints, resulting in poor wear resistance of the conveyor belt, local wear, and severe exposure of the steel wire rope of the conveyor belt and the nylon core of the conveyor belt, which affects the service life of the conveyor belt and increases the company’s Operating costs.

  2.2 The abrasion of the skirt part of the belt conveyor causes the abrasion of the conveyor belt

 Based on the surrounding material leakage in the material transportation process of the belt conveyor, many belt conveyors have a guide groove to carry out the reverse transportation of materials. Once the skirt of the guide groove is unreasonably designed or installed, it will appear During the transportation of the belt conveyor, the edge of the skirt plate of the guide groove causes abrasion on the conveyor belt of the belt conveyor. In this case, the most severe part of the conveyor belt is the rubber layer on both sides of the conveyor belt. In the longitudinal direction of the conveyor belt, the steel wire rope of the conveyor belt or the nylon core of the conveyor belt will be exposed. In this process, when the steel rope or nylon core of the conveyor belt is raised, the roller of the belt conveyor will be wrapped around the steel rope. In severe cases, the steel rope of the conveyor belt will be torn off, resulting in the entire belt. Of wear. The emergence of this situation will seriously affect the operational safety and production of belt conveyors.

  2.3 Wear of the middle position of the conveyor belt in the belt conveyor leads to the wear of the conveyor belt

 Once the belt conveyor has a fixed point material leakage, it will cause a certain degree of impact on the conveyor belt of the belt conveyor, and the final result of this impact is very serious wear and tear on the conveyor belt. There are two main results of this wear condition. The first is the wear of the conveyor belt along the running direction of the belt conveyor, which leads to the break of the wire rope of the conveyor belt or the break of the nylon core. The second result is that repeated uninterrupted leakage of materials will cause overlapping belts in the middle of the conveyor belt, which will seriously affect the operation and production of the belt conveyor.

  3 Treatment method of conveyor belt wear

  In the production process, a very important way to improve production efficiency is to properly protect the wear condition of the conveyor belt, and at the same time, reduce the frequency of changes of the conveyor belt as much as possible to ensure that the production runs normally within a certain period. Regarding the treatment method of the belt wear in the belt conveyor, the article mainly elaborates and analyzes from four aspects. The first aspect is to optimize the technology of belt conveyor vulcanization conveyor belt, and the technology of local thermal vulcanization. The second aspect is to optimize the technology of belt conveyor vulcanization conveyor belt, local cold vulcanization technology. The third aspect is the use of local cold bonding technology in the process of bonding the conveyor belt. The fourth aspect is the use of spray repair in the repair process of the conveyor belt.

  3.1 Optimizing the technology of belt conveyor vulcanization conveyor belt, local hot vulcanization technology

  The main construction object of the local thermal vulcanization technology of the conveyor belt is the vulcanization wear of the small area conveyor belt. In actual production, local vulcanization joints appear to be worn out, and it is very important and practical to use conveyor belt vulcanization heat treatment technology. Thermal vulcanization can also effectively restore the operating performance of the conveyor, but this new technology has a serious disadvantage. In the process of dealing with the small area wear of the conveyor belt vulcanized joints, it requires a lot of manpower and material resources. The time consumed is also very long. Therefore, when using this technology, you must first evaluate the input-output ratio and make the correct choice with reference to the actual situation on the site.

  3.2 Optimize the technology of belt conveyor vulcanization conveyor belt, local cold vulcanization technology

 The local cold treatment of the conveyor belt is mainly aimed at the grinding treatment of the worn position. After the sanding treatment is completed, apply the cold-treated vulcanizate evenly on the worn surface. This can also effectively restore the performance of the conveyor belt. The disadvantage of this technology is that the implementation time is too long. It needs 12 More than hours. After practical feedback, although this method is effective, the quality of the processing position is poor.

  3.3 In the process of bonding the conveyor belt, the local cold bonding technology of the local cold bonding technology conveyor belt has four outstanding advantages.

  The first advantage is that there is less material investment in the repair process; the second advantage is that the time required after the repair is short; the third advantage is that the conveyor has strong wear resistance after the repair; the fourth advantage is the conveyor belt It has good reinforcement after repair. Therefore, this method is widely used in actual use.

  3.4 The method of spraying repair in the repair process of conveyor belt

 

This technology is suitable for the local wear problem of continuous pieces. This technology uses special equipment spraying polyurea elastomer technology, mixes two liquid materials through special equipment, and then uses high pressure spray to the wear surface of the conveyor belt, and calculates the thickness according to the degree of wear to form a wear-resistant layer.

This article is transferred from China Cement Network

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