Impact crusher

Abstract

The invention discloses an impact crusher. The impact crusher comprises a lower shell, a rack, a transmission device, a rotor, an upper shell, an impact plate, an adjusting device and the like, wherein a pre-screening channel is formed in the lower shell, a pre-screening device is arranged at a feeding port formed by the upper shell and the lower shell and used for pre-screening materials at the feeding port, fine materials subjected to pre-screening enter the pre-screening channel and then are output through a discharging port. After the materials are sorted by the pre-screening device, fine materials enter the pre-screening channel and then are discharged out of the crusher, unqualified coarse materials fall into the rotor working area, the transmission device drives the rotor to rotate to hit the materials onto the impact plate to be subjected to impact crushing, and therefore the materials with qualified particle sizes are obtained. The particle size difference rate of output materials is reduced, the fine powder amount of finished product granules is reduced, the uniformity rate of the materials with the finished product particle size is improved, the beating frequency is reduced, and the efficiency is improved.

Description

technical field [0001] The invention relates to the field of pulverizers, in particular to an impact crusher. Background technique [0002] Impact crusher is also called impact crusher. It is mainly used for processing and crushing materials in metallurgy, chemical industry, building materials, hydropower and other industries. It can be configured in various configurations according to the types of raw materials, scale and requirements of finished materials. Its working principle is that driven by the motor, the rotor rotates at high speed. When the material enters the action area of ​​the blow bar, it collides with the blow bar on the rotor and breaks. Go back to the action area of ​​the blow bar for re-crushing. This process is repeated. The material enters the first, second and third impact chambers from large to small for repeated crushing until the material is crushed to the required particle size and discharged from the discharge port. [0003] In actual use, due to t...

AI Technical Summary

Problems solved by technology

[0003] In actual use, due to the large difference in the particle size of the materials entering the crushing area, the particle size difference rate of the materials entering the crushing area is relatively large. Through the repeated crushing of the impact plate and the rotor, the finished product will produce more fine powder materials, which will affect the next stage. The process causes unnecessary trouble and reduces efficiency

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