How to solve the noise in the flour machine

发布时间：2022-04-29 点击次数：

1. The wind deflector of theflour machine makes abnormal noise, which has a lot to do with the conformity of the wind deflector. It is because the welding points are rough during the processing of the flour machine, and the edge of the small mouth of the wind deflector is inconsistent. caused by friction.

2. Electromagnetic sound. Divided into high frequency and low frequency. It can be caused by the poor compliance of the shaft iron core position and the oblique groove, the inner bore of the iron core is not good, and the outer diameter of the rotor is inconsistent in machining. Usually, the method of replacing the rotor is used to eliminate and solve such problems.

3. The motor makes a loud and heavy sound. Reasons may be:

a. The air gap between the stator and the rotor is uneven. At this time, the sound fluctuates high and low and the interval between high and low sounds is unchanged. This is caused by the bearing wear which makes the stator and rotor not concentric.

b. Three-phase current is unbalanced. This is due to the faulty grounding, short circuit or poor contact of the three-phase windings.

c. The iron core is loose. During the operation of the motor, the iron core fixing bolts are loosened due to vibration, which causes the iron core silicon steel sheet to loosen and emit noise.

4. If there is an uneven collision sound, it may be caused by the collision of the fan blades against the fan cover