Troughing idlers are used for conveying bulk materials, with a trough angle of 30°.

Precautions for using troughing idler conveyor belts:

1. Prevent the conveyor belt from starting under load.

2. If the conveyor belt deviates from its designated path, corrective measures should be taken promptly.

3. Conveyor belts of different types, specifications, and ply numbers should not be spliced ​​together; adhesive bonding is preferred for joints.

4. The type, structure, specifications, and ply number of the buffer idlers should be determined according to the intended use.

5. The conveyor belt speed should generally not exceed 2.5 m/s. For materials with large particle sizes and high abrasiveness, and for unloading devices using fixed plows, lower speeds should be used whenever possible.

6. The relationship between the diameter of the drive drum and the ply number of the conveyor belt, the matching of the drive drum and the elevator idler drum, and the requirements for the idler trough angle should be rationally selected according to the design specifications of the conveyor.

7. The feeding direction should be the same as the conveyor belt's running direction. To reduce the impact of falling material on the conveyor belt, chutes should be used to minimize the material drop distance. In the receiving section of the conveyor belt, the idler spacing should be shortened and buffer idlers should be used to prevent material leakage. The conveyor belt should be fitted with moderately soft baffles to prevent them from being too hard and scratching the belt surface.

8. When using friction idlers, if any idlers are missing, they should be added or repaired promptly. Idler rollers should not be covered by material, causing slow rotation. Prevent material leakage from getting stuck between the conical idler roller and the belt. Pay attention to lubrication of the moving parts of the conveyor belt, but avoid oil contamination of the conveyor belt.

9. Avoid obstruction of the conveyor belt by the frame, supports, or lumpy materials to prevent damage and tearing. If local damage to the conveyor belt is found on a bucket elevator, it should be repaired promptly with artificial cotton to prevent further damage.