The reason of uneven granularity of impact crusher

The main components of impact crusher are fixed jaw plate and movable jaw plate, which are mainly driven by electric motor to drive belt and belt pulley to make the movable jaw move up and down through eccentric shaft, and change the size of angle between elbow plate and movable jaw, when the movable jaw is close to the rack tooth plate, the material will be crushed, when the tooth plate leaves, the crushed material in the crushing cavity will be excluded automatically by gravity, so it can run continuously for production work. Often daily inspection of the crusher, early detection of problems, when the crusher appears uneven discharge size, carefully find the reasons for the failure, timely troubleshooting, to avoid the trouble caused by machine downtime.Analysis of the causes of uneven size of the impact crusher discharge, as follows:

1. The motor wiring position is reversed, the main machine open reverse (moving jaw clockwise rotation), or the motor triangle connection into a star connection.

2. Jaw plate displacement, tooth top and tooth top relative.

3. The gap between the moving jaw and the bearing is too large after wear, so that the outer ring of the bearing rotates relatively.

4. The discharge opening is less than the specified limit.

5. The hardness or toughness of the crushed material exceeds the range specified in the instruction manual.

6. The voltage of the working site is too low.

Impact crusher is one of the important equipment in various production lines and mining for crushing work, the reason why it is so widely used is determined by its own characteristics and performance, the main features of impact crusher are relatively large crushing strength, relatively simple construction, easy maintenance, uniform size, reliable work. It is widely used in many industries such as mining, smelting, building materials, highway, railroad, water conservancy and chemical industry to crush various materials with compressive strength not exceeding 320 MPa.

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