Sungda Conveyor Belt Co.,Ltd.

Conveyors are used in all walks of life due to their advantages of smooth operation and continuous transportation capacity. In recent years, due to the gradual increase in the production capacity of major mines, the transportation capacity of conveyor belts has gradually become tight. The traditional transformation scheme is to replace high-power conveyors. The installation of new conveyors, etc., has a large project and a high investment, so it is of great significance to improve the transportation capacity based on the existing EP conveyor belt

1. Increase the effective running time of the conveyor

The effective running time of a conveyor means that during its operation, the EP conveyor has been continuously transported with the material within its load range. That is, one aspect is to improve its running time, and the other is to improve the continuity of the transported material during operation.

First, try to avoid normal inspection and maintenance when there is a need for transportation so that the conveyor’s operating time is consistent with the time required for transportation; second, avoid various abnormal shutdowns of the conveyor due to equipment failure or human reasons during transportation…

2. Reduce conveyor failure rate

In actual production, once the conveyor fails, it will cause stoppage and maintenance that lead to delay the production time, and more serious is that will bring hidden safety hazards. The fails include insufficient tension or uneven underframe, uneven load on the conveyor will greatly affect the conveyance. Machine transportation capacity.

1) Insufficient tension, the conveyor belt is loose, causing the conveyor to slip

The tensioning device is an indispensable and important part of the conveyor. It is directly related to the safe operation and service life of the conveyor, especially for large conveyors with large distances. The load changes cause the length of the conveyor belt to change. The tension conveyor pulley position must be adjusted frequently to ensure the normal operation of the belt conveyor. In the past, a fixed winch was usually used for tensioning, and it can only tension the conveyor belt regularly, and the degree of tension is often related to the operator’s experience. Too much or too little tensioning force affects the safety and smooth operation of the conveyor. It causes the EP conveyor belt to slacken, resulting in slipping and immobility.

Solution: Replace with the automatic tensioning device. The automatic tensioning device can accurately control the tension of the conveyor belt and monitor the tension of the conveyor belt in real-time. At the same time, it has excellent dynamic response capabilities and responds to changes in the tension of the conveyor belt in a very short time.

2) The height of the underframe fluctuates, and the conveyor is unevenly stressed, resulting in an accident of pressing the conveyor belt.

When the first half of the conveyor line is empty and the second half is fully loaded, the load on the conveyor is uneven, and the drive conveyor pulley at the front of the conveyor slips, causing the conveyor to stop, and the second half of the material presses the conveyor belt. The high and low fluctuations cause some of the conveyor pulleys to be stressed, and the phenomenon of bad conveyor pulleys frequently occurs; the conveyor tail is changed to a relatively low point at the tail pulley. In addition to the horizontal pulling force of the conveyor belt, it must withstand an upward pulling force, which is easy to cause broken tail pulley at the rear of the conveyor.

Solution: level the ridge of the roadway and install the “H” steel frame to achieve the purpose of leveling the slope of the conveyor to reduce running resistance.

3. Do the maintenance of the conveyor

The inspection and maintenance work of the conveyor is done well, and the operation efficiency of the conveyor is improved. The inspection and maintenance of the conveyor are mainly performed on the four major parts of the conveyor scraper, the conveyor belt itself, the power unit, and the electrical protection device.

(1) Routine maintenance of scraper

If the scraper presses the conveyor belt or the drive pulley surface too tightly or the gap is too large, the EP conveyor belt may be damaged or the cleaning effect may be reduced. In addition, in order to prevent the conveyor from being broken after the scraper is damaged, the integrity of its parts is also an important inspection object. If it is found that the material has accumulated too much on the scraper or the parts are incomplete, it should be shut down immediately and cleaned and replaced.

(2) Daily maintenance of EP conveyor belt

Drive pulley slipping is usually caused by insufficient belt tension, while the vibration of the return conveyor belt is generally caused by excessive belt tension. Therefore, the daily maintenance of the conveyor belt is mainly the maintenance of tension. It is advisable to adjust the tension of the conveyor belt with the load cell pressure gauge value control, or the conveyor belt does not cause slippage on the sensing drum. Conveyor belt deviation and abnormal wear are the main reasons for the shortened conveyor belt life. In routine maintenance, the deviation of the conveyor should be corrected in time, and ways to avoid abnormal wear should be avoided. A long-term deviation can easily cause wear, cracking and even longitudinal tearing of the conveyor belt.

(3) Daily maintenance of power plant

The reducer, motor and conveyor pulley bearing are the power supply devices for the conveyor. Electromechanical maintenance personnel should often observe the grease lubrication and heat generation of these components. In the observation, it is found that oil leakage or lubricating oil penetration occurs in this equipment. They should check the cause in time and replenish the oil leaking parts; For abnormally hot equipment, stop and inspect it in time to avoid the accident.

(4) Maintenance of electrical control and protection devices

The electrical control and protection device is the electrified equipment on the conveyor. For this type of equipment, the mechanical and electrical maintenance personnel must strictly overhaul it in accordance with the relevant operating instructions. When the other parts of the conveyor are usually maintained, the electrical equipment must be protected to Prevent Damage.

4. Improve the professional quality of operation and maintenance personnel

The professional quality of conveyor operation and maintenance personnel is related to whether the conveyor can be correctly operated and maintained. There was an operator who did not operate the conveyor according to the operating procedures of the conveyor and did not carry out a detailed inspection of the equipment before the start-up. As a result, a 700-meter-long conveyor belt was cut from the middle due to a broken conveyor pulley, which caused a serious EP conveyor belt accident. It has brought major economic losses to the enterprise. Therefore, the enterprise must often provide special business training to the operators, so that the operators and maintenance personnel recognize the importance of their positions, and can strictly abide by the operating rules and maintenance rules, so as to prevent the operation of the conveyor from being caused by misoperation or maintenance errors.

To improve the transportation capacity of the conveyor, first of all, the products of regular manufacturers must be selected when purchasing equipment. Mature production capacity has sufficient after-sales guarantee for the quality of the equipment. Secondly, during the installation and operation, it is necessary to follow the procedures to prevent unnecessary failures. Finally, do a good job of the inspection and maintenance of the conveyor, improve management and maintenance capabilities, and strive to maximize the transport capacity of the conveyor.