Analysis of belt conveyor belt short life reasons
Analysis of the short life of belt conveyor belt
1 belt quality is poor
The poor quality of the belt is one of the main culprits affecting the service life. Therefore, when purchasing, Sanxiong Heavy Industry Network recommends not choosing a poor quality belt to save money.
2 Cleaner is reliable and easy to use
The belt conveyor should ensure that the cleaner is reliable and easy to use during operation, and there should be no material on the return belt. If the above contents are not guaranteed, the material on the return belt will enter the drive roller or the reverse roller with the return belt, and the belt will be damaged by the material and will damage the vulcanized rubber layer on the surface of the drum. A break will appear on the belt, reducing the life of the belt.
How to improve the service life of the belt conveyor of the beneficiation equipment
1. Improve the conveyor belt drop hopper. Improving the conveyor belt drop hopper is one of the effective measures to prevent early damage of the conveyor belt.
2. The claw pulley of the conveyor at the transition point. Practice has confirmed that the lateral strength of the steel rope conveyor belt is insufficient. When starting, the belt pulley causes the belt to be partially stressed too much, which causes the belt to be torn and the belt pulley to be changed into a belt roller. This problem can be completely solved. .
3. Add a scraping device at the reversing drum. A scraping device is added at the reversing drum along the conveyor belt to eliminate the problem of material adhesion at the reversing drum, and to solve the partial damage of the conveyor belt caused by the drum sticking.
4, large arm boom conveyor belt weight reduction. Coal mining systems yard stacker boom conveyor initial life is very short, heavy counterweight design is caused by the belt tension is too large, an important reason for premature aging cracking.
5. Improvement of the transition point of the head, tail and intermediate transfer of the beneficiation equipment. The transition length and transition mode of the conveyor head, tail and intermediate transfer have a great influence on the service life of the conveyor belt. It is necessary to carry out a reasonable transition design, and try to reduce the damage of the conveyor belt glue to ensure that there is no folding or intermediate bulging of the conveyor belt, and the material is not spilled at the blanking point.
6, the conveyor belt local damage repair technology to extend the service life
(1) local heat vulcanization;
(2) Partially cold splashing, the product has the United States Fusit (1sfline) technology liquid polymer composite repair materials, Detong Defukang, etc., but need to be normal temperature for about 10h;
(3) Partially cold-bonded, using the German Tipupu company repair strip (longitudinal cracking plant = i), cold viscose-T2 composite rubber longitudinally fill the crack plug (requires special glue gun).
(4) Conveyor belt spray repair technology. The technology is to mix several liquid materials through special equipment and spray high pressure on the belt wear surface. Spray a certain thickness of wear layer as needed.
7, reasonable choice of belt type and maintenance
Reasonable selection of ploughs, timely correction of the correcting device along the line according to seasonal changes, and the addition of sun protection cover to winter maintenance and other measures can also extend the life of the beneficiation equipment conveyor belt.
8. Flow direction adjustment: The flow direction has an important influence on the service life of the conveyor belt. The material flow should be operated in the same direction as the conveyor belt, which can greatly improve the service life of the equipment.
The future development trend of belt conveyor
A conveyor is a material handling machine that continuously transports materials on a certain line, also known as a continuous conveyor. The conveyor can be transported horizontally, obliquely and vertically, or it can form a space conveyor line, which is generally fixed. The conveyor has a large conveying capacity and a long transportation distance, and can also complete several process operations simultaneously in the conveying process, so the application is very extensive. It can be transported in a single unit or in multiple units or in a horizontal or inclined conveying system with other conveying equipment to meet the needs of different layouts.
Belt conveyor (ie belt conveyor) is the most ideal high-efficiency continuous transportation equipment for minerals. Compared with other transportation equipment (such as locomotives), it has the advantages of long conveying distance, large volume, continuous conveying, etc., and it is reliable in operation. It is easy to realize automation and centralized control, especially for high-yield and high-efficiency mines. Belt conveyors have become the key equipment for mechatronics technology and equipment for coal mining. The main feature of the belt conveyor is that the fuselage can be easily telescoped. It has a storage bin. The tail can be extended or shortened with the advancement of the mining face. The structure is compact and can be laid directly on the floor of the roadway without a foundation. The frame is light and easy to disassemble. When the conveying capacity and the transportation distance are large, an intermediate driving device can be provided to meet the requirements. According to the requirements of the conveying process, it can be transported in a single machine, or multiple units can be combined to transport horizontal or inclined transportation systems.
The structure, conveying capacity and belt speed of the belt conveyor have been developed to varying degrees. In particular, due to the bulk bulk material delivery system, the performance requirements of the belt conveyor are getting higher and higher. According to the statistics of the National Bureau of Statistics, in 2005, China's above-scale transportation machinery enterprises completed a production of 1.565 million meters. With the improvement of the automation level of domestic mining, the port business is increasing, the power generation of power plants is increasing, the grain output and the deep processing industry are all fields. With the continuous development of the market, the development of the domestic material transportation industry will continue to grow.
All in all, the development of belt conveyor protection systems must and must be closely integrated with the development of inspection technology, communication technology and automation control technology.
Conveyors are generally classified by the presence or absence of traction members: conveyors with traction members typically include traction members, load bearing members, drive devices, tensioning devices, redirecting devices, and supports. The traction member is used for transmitting the traction force, and the conveyor belt, the traction chain or the steel wire rope can be used; the bearing member is used for receiving the material, and the hopper, the bracket or the spreader; the driving device powers the conveyor, generally by the electric motor, the speed reducer and Brake (stopper) and other components; the tensioning device generally has two types of screw type and heavy hammer type, which can maintain the tension and sag of the traction piece to ensure the normal operation of the conveyor; the support member is used to support the traction member or As the bearing member, a roller, a roller or the like can be used.
The structural feature of the conveyor with the traction member is that the conveyed material is installed in the bearing member coupled with the traction member, or directly on the traction member (such as the conveyor belt), and the traction member bypasses each roller or the sprocket Connected to form a closed loop comprising a loaded branch carrying material and an unloaded branch carrying no material, the material being conveyed by continuous movement of the traction member. There are many types of conveyors, such as belt conveyors, slab conveyors, trolley conveyors, escalators, moving walkways, scraper conveyors, buried scraper conveyors, bucket conveyors, bucket elevators. , hanging conveyors and aerial ropeways.
The structure of the conveyor without the traction members is different, and the working members for conveying the materials are also different. Their structural features are: the use of the rotating or reciprocating motion of the working member, or the use of the flow of the medium in the pipe to transport the material forward. For example, the working member of the roller conveyor is a series of rollers, and the roller rotates to convey the material; the working member of the screw conveyor is a spiral, and the spiral rotates in the trough to push the material along the trough; the work of the vibrating conveyor The member is a trough, and the trough reciprocates to transport the material placed therein.
The industry believes that the future belt conveyor will be developed towards large-scale development, expanding the scope of use, automatic material sorting, reducing energy consumption, reducing pollution, etc.: 1 Continue to develop large-scale. Large-scale includes several aspects such as large conveying capacity, large single machine length and large conveying inclination. The length of the hydraulic conveying device has reached more than 440 kilometers. The length of the belt conveyor is nearly 15 kilometers, and there have been a number of "belt conveyors" that link the two sides. Many countries are exploring a more complete conveyor structure for long-distance, large-volume continuous conveying of materials. 2 Expand the scope of use of the conveyor. Development of conveyors that can operate in environments with high temperatures and low temperatures, corrosive, radioactive, and flammable materials, as well as materials that can transport hot, explosive, agglomerated, and viscous materials. 3 Make the structure of the conveyor meet the requirements of the single handling of the automatic control of the material handling system. For example, the trolley conveyor of the automatic sorting package used by the post office should be able to meet the requirements of the sorting action. 4 Reducing energy consumption to save energy has become an important aspect of scientific research in the field of transportation technology. The energy consumed to transport 1 ton of material for 1 km has been one of the important indicators for conveyor selection. 5 Reduce the dust, noise and exhaust emissions generated by various conveyors during operation.
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