SU948426A1 - Percussion mill - Google Patents

Description

The invention relates to devices for grinding materials and can be applied in construction, agricultural and other industrial areas.

A device for treating paper waste is known, which includes a working chamber divided by a perforated partition and a chamber for removing crushed material. In the upper part of the device on the vertical shaft there are pests and close to the partition of the blade. On the walls of the chamber are fixed knives. The whips and knives grind the material, and the blades rub it through the perforated partition. For work on the machine, the material is supplied only with tij water.

The disadvantage of this device is its low productivity.

Closest to the proposed impact mill of the known ones, there is a impact mill containing a grinding chamber with annular protrusions of triangular cross section on its inner surface, a rotor with blades, under which a sieve is located with a gap,

The disadvantages of this mill are its low productivity and low camera life.

The aim of the invention is to improve the performance and life of the camera.

The goal is achieved by the fact that in the impact mill, which contains a grinding chamber with annular projections of three coal sections on its inner surface, a rotor with blades, under which a sieve is located with a gap, the receiving hopper, the rotor blades are inclined to its plane of rotation.

15 at an acute angle, and the gap between the rotor blades and the sieve is 1 / 2-3 / 4 of the diameter of the sieve holes.

In addition, the grinding chamber is equipped with a periodic action valve.

The drawing shows a General view of the shock mill.

The mill consists of a cylindrical grinding chamber 1, reinforced in bearings of a vertical shaft 2 with a rotor 3, a sieve 4, a receiving hopper 5 with a capacitance 6 installed in its lower part 6. The grinding chamber has a loading section 30 on top, on the side walls

Claims (2)

Claim 1. An impact mill containing a grinding chamber with annular steps 10 pits of a triangular section on its inner surface, a rotor with blades, under which a sieve is located with a gap, a receiving hopper, characterized in that, 15 in order to increase the productivity and service life of the chamber, the rotor blades are inclined to the plane of its rotation at an acute angle, and the gap between the rotor blades and the sieve pa-2Q veins 1 / 2-3 / 4 of the diameter of the sieve openings. 2. Mill pop. 1, characterized in that, in order to remove unmilled particles from the grinding chamber, the latter is provided 25 valve periodic action.