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How to deal with abnormal vibration of the vibrating screen?

Back to list Release Date:2025-08-19

Check the motor

Motor imbalance: Conduct dynamic balance testing and adjustment on the motor. If there is dust or foreign matter on the motor rotor, it needs to be cleaned up; If there is a problem with the motor winding, the motor should be repaired or replaced in a timely manner.

Motor bearing damage: Determine whether the bearing is damaged by listening to sound or using professional inspection tools. If there is any damage, it is necessary to replace the bearing with the same model in a timely manner.

Check the structure of the screening box

Welding cracks in the sieve box: Carefully inspect all welding parts of the sieve box. If cracks are found, clean them up first, then repair them using appropriate welding techniques and conduct non-destructive testing to ensure welding quality.

Support spring issue: Check if the support spring is damaged, deformed, or aged. If there are any, the springs should be replaced in a timely manner to ensure that the stiffness and elasticity of the springs meet the requirements, and that the heights of each spring are consistent, so that the sieve box can be uniformly stressed.

Adjust material distribution

Check the feeding device: Check the operation of the feeder to ensure that it can evenly transport the material to the vibrating screen surface. If there is a malfunction in the feeder, such as scraper wear, belt deviation, etc., it should be repaired or adjusted in a timely manner

Adjust the feeding speed: Based on the processing capacity and material characteristics of the vibrating screen, adjust the feeding speed reasonably to avoid material imbalance or accumulation on the screen surface. It can be achieved by adjusting the speed of the feeder or controlling the feeding time.

Check the exciter

Loosening of exciter components: Check whether the connecting components such as bolts and nuts of the exciter are loose. If they are loose, they should be tightened according to the specified torque. At the same time, check whether the eccentric block inside the exciter is installed correctly, whether there is displacement or damage. If there is a problem, the eccentric block needs to be reinstalled or replaced.

Vibration exciter malfunction: If the vibration exciter experiences bearing damage, gear wear, or other malfunctions, the damaged components should be replaced in a timely manner. For some irreparable faults, it may be necessary to replace the entire exciter.

Calibration screen installation

Mesh tension: Check the tension of the mesh to ensure that it does not loosen or shake during operation. If the tension of the screen is insufficient, the screen should be re tensioned, which can be achieved by adjusting the screen tensioning device or replacing the tensioning component.

Installation position of screen mesh: Check whether the installation position of the screen mesh is correct, whether it is tightly attached to the screen frame, and whether there is any tilting or twisting phenomenon. If any, the screen mesh needs to be reinstalled to ensure that it is installed smoothly and firmly.

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