The bucket elevator is used to vertically lift the block and granular materials such as limestone, coal, gypsum, clinker, dry clay and other powdery materials such as raw meal, cement, and coal powder that have passed through crusher.
The selection of bucket elevator depends on the following factors:
1.The form of the material: whether the material is powdery, granular or small.
2.Specific gravity of materials: Generally, bucket elevator parameters are designed and calculated for materials with a bulk specific gravity below 1.6. Too much material specific gravity requires calculation of traction and tensile strength of the transmission part.
Conveying volume per unit time: The final conveying volume of the bucket elevator is a comprehensive parameter that depends on the hopper form, bucket speed, material specific gravity, material properties, and the number of hoppers.

1. Collision between pipe wall and material
Some raw materials will collide with each other during the entire pneumatic conveying process. Some raw materials will be harder and have a higher bulk density, which will also wear the pipeline and affect the pipeline.
2. Conveying speed
The raw material has corresponding abrasion to the pipeline in terms of conveying speed. The vacuum feeder has a faster speed, and the powder material has a strong wear on the vacuum feeder pipeline.
3. Particle shape
The hazard of particle shape to wear is mainly due to the principle of its hazard to wear. When the particles collide with the inner wall of the pipe, the total contact area between the particles and the inner wall of the pipe determines the compressive strength between them. The wear of sharp particles on the surface of plastic materials is mainly drilling wear, and the wear caused by spherical particles is mainly plastic deformation wear.

1. The bucket elevator should be driven with no load. Drain all materials in the hopper before stopping each time, and then stop.
2. it cannot be reversed. Derailment of the chain may occur when it is reversed, and it is very troublesome to troubleshoot the derailment.
3. Feed evenly. It is forbidden to increase the feeding amount suddenly. The feeding amount cannot exceed the conveying capacity of the elevator. Otherwise, it is easy to cause a "stuffy car" accident when the material at the bottom accumulates seriously.
4. Replenish lubricating oil in a timely and appropriate amount.
5. When the chain and hopper are severely worn or damaged, they should be replaced in time.

1.Contain a lot of materials close to the mesh size;
2.Material with high water content
3.The material is fibrous, and the material has static electricity;
4.The wire diameter of the woven screen is too thick, resulting in too small mesh
5.More flake shape particles.

1. Too large or too small equipment bearing clearance will cause abnormal metal sound;
2.The dents in the peripheral track of the mechanical equipment bearing will cause a smooth and crisp sound and cause vibration;
3. The percussion scars during installation will produce noise, which will vary with the speed of the bearing;
4. The rolling parts of the vibrating screen bearing are damaged, which will cause intermittent noise;
5. When there are pollutants in the vibrating screen bearing, it will cause hissing noise;
6. Severe vibration screen bearing damage will cause huge noise;
The above is a summary of common vibration screen bearing noise identification methods. However, if noise occurs in the vibrating screen bearing, in order not to cause more serious damage to the vibrating screen equipment, it is recommended to replace the bearing immediately.
Good daily maintenance habits can avoid problems with vibrating screen bearings to the greatest extent. Frequent inspection of bearings and regular lubrication maintenance are more important.

The trommel screen is reliable in operation and small in maintenance. The following briefly describes the points that should be paid attention to during operation:
1.Turn on the trommel screen first, then turn on the feeding equipment; when stopping, turn off the feeding equipment first, and then turn off the trommel screen;
2.Three days before operation, check the trommel screen fasteners every day, and tighten them in time if they are loose. In the future, the drum screen fasteners can be inspected and processed regularly (weekly or half a month);
3.The lubrication of the bearing seat and gearbox should be checked regularly, and the oil should be added and changed in time. The large shaft bearing adopts No. 2 lithium-based grease. Under normal circumstances, the grease should be refilled once every two months, and the filling amount should not be too much, otherwise the bearing will be easily overheated. All bearings should be cleaned and inspected once a year.
4.When the equipment is out of service for a long time (more than 30 days) and restarted, the motor insulation should be telemetry to prevent the motor from burning.