Crushing machine capable of separate screening

Abstract

The invention relates to the technical field of crushing machines, and in particular to a crushing machine capable of separate screening. The crushing machine comprises an upper housing and a lower housing, wherein a crushing cavity is formed between the upper housing and the lower housing; a spindle is arranged in the cavity; a hammer frame is fixed on the spindle and is rotationally connected with a plurality of hammer heads; counterattack plates are fixed on the inner side wall of the upper housing; a screen plate is fixed below the hammer frame; the screen plate is a double-layer plate comprising an upper screen plate and a lower screen plate; the upper screen plate is fixed on the side wall of the lower housing; the lower screen plate can move horizontally relative to the upper screen plate; a plurality of screen holes with the diameter of R are uniformly formed in the upper screen plate; a plurality of screen holes with two diameters of R and r are uniformly formed in the lower screen plate, so that when the lower screen plate moves horizontally, all the screen holes with the diameter of R or r in the lower screen plate are coaxial to the screen holes in the upper screen plate, wherein R is greater than r. According to the crushing machine, the size of the screen holes of the screen plate is easy to change to meet the requirements of production, so that the process of replacing the screen plate is omitted and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of crushers, in particular to a crusher capable of sub-sieving. Background technique [0002] In metallurgy, mining, chemical industry, cement and other industrial sectors, a large amount of raw materials and reused waste need to be processed by crushers every year. For example, in a concentrator, in order to separate the useful minerals in the ore, it is necessary to use a crusher to crush the raw ore to the particle size required by the grinding process. It is necessary to use crushing machinery to crush the raw materials to the particle size required by the next step. In coking plants, sintering plants, ceramic plants, glass industry, powder metallurgy and other departments, crushing machinery must be used to crush raw materials to the particle size required by the next step. [0003] When the crusher is working, the motor drives the rotor to rotate at a high speed, and the material enters the crusher c...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem of adjusting the aperture of the sieve plate in the existing crusher, the adjustment of the aperture is mainly completed by replacing the sieve plate, which is troublesome to replace the sieve plate, and the sieve plate is easily damaged, and the production efficiency is low , the present invention provides a crusher that can be divided into sieves. The size of the sieve holes of the sieve plate can be easily changed through the double-layer sieve plate to meet the production requirements, avoid the process of replacing the sieve plate, improve production efficiency, and reduce cost of production

Images