SU1727895A1 - Disintegrator - Google Patents

Abstract

Use: in the chemical, construction, mining and other industries, as well as in agriculture for grinding grain. SUMMARY OF THE INVENTION: The disintegrator comprises a cylindrical body in which rotor disks with rows of grinding elements are mounted with the possibility of counter-rotation. The material to be ground is fed through the feed hopper 2. Particles of a size smaller than the axial gap between the grinding elements pass into it, are captured by the grinding elements 7 of the first row, are accelerated by centrifugal force and are thrown onto the surface of the grinding elements 8 of the second row. Under the impact of a counter-impact, particles of the comminuted material are destroyed, then again accelerated along the surface of the grinding elements 8. Particles that have not passed through the axial gap slide on the inclined surface of the ends of the grinding elements, are thrown onto the surface of the upper disk 10 of the rotor 5 and due to centrifugal force move along the upper part of the housing 1 and the annular element 11, then output through the window into the pocket 4. In this case, the annular element 11 prevents impurities from entering the working chamber and prevents grinding of grinding elements of the last row. After completion of the operation, coarse impurities are removed through the lower window. 1 hp f-ly, 2 ill. ate with

Description

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Fig, 1

The invention relates to devices for grinding materials and can be applied in the chemical, construction, mining and other industries, as well as in agriculture for grinding grain.

A disintegrator is known, consisting of two disks that are mounted on independent shafts, rotating in opposite directions. Each basket has three concentric rows of cylindrical fingers arranged in such a way that each row of one basket is between two rows of fingers of the other, forming a grinding stage.

However, this design does not provide for the removal of large impurities that can rotate the rotors.

The closest in technical essence and the achieved result to the proposed is a disintegrator containing a cylindrical body, mounted with the possibility of counter-rotation of the disks of rotors with multimodal flat grinding elements, loading and unloading nozzles.

The aim of the invention is to increase the reliability of the disintegrator due to the preliminary withdrawal of large impurities.

The goal is achieved by the fact that in a disintegrator containing a cylindrical body, mounted with the possibility of counter-rotating rotor disks with multi-unit flat grinding elements, loading and unloading nozzles are provided with an annular element mounted on the body at the level of the upper rotor disk, while the inner surfaces of the first p yes grinding elements are made with a bevel directed from the center at an angle

p arctg

RC6 - f G

G + f RCB

where Рцб - centrifugal force;

f is the coefficient of friction;

G - body weight,

moreover, the axial gap between the grinding elements does not exceed the size of the gap between the rows of grinding elements.

At the same time, a pocket is formed in the case of the disintegrator.

Figure 1 shows the disintegrator, axial section, and section AA; figure 2 - section bb in figure 1.

The disintegrator contains a cylindrical body 1 with a hopper 2, an unloading nozzle 3 and an unloading pocket A. Inside the body there are two rotors 5 and 6 with rows of grinding elements 7-9. Rudy grinding elements

8 rotor 6 enters the annular space between the rows of grinding elements 7 and

9 rotor 5, thus forming two grinding stages. At the first p yes grinding

elements inner ends are made with bevel:

A ring 11 is mounted on the inner walls of the housing, concentrically to the upper disk 10, which divides the volume of the housing into two parts: the lower - working, upper - for the removal of large impurities. On the cylindrical body there is a pocket 4 with a free window in the lower part, closed

cover 12.

Disintegrator works as follows

The material to be ground is fed through a feed funnel 2. Particles with a size smaller than the axial gap between the grinding elements pass into it, are captured by the grinding elements 7 of the first row, are accelerated by centrifugal force and are thrown away.

on the surface of the grinding elements 8 of the second row. Under the impact of a counterstrike, the particles of the comminuted material are destroyed, then they are again accelerated along the surface of the comminuting elements 8.

Particles that have not passed through the axial gap, slide along the inclined surface of the ends of the grinding elements, are ejected onto the surface of the upper disk 10 of the rotor 5 and due to the centrifugal reel move along the upper part of the housing 1 and the ring 11, then output through the window to the pocket 4. When This ring 11 prevents impurities from entering the working chamber and prevents damage to the grinding

elements of the last p yes.

Claims (2)

After completion of the service, large impurities are removed through the lower window of the pocket 4. Claim 1. Disintegrator comprising a cylindrical body, mounted for counter-rotation of rotor disks with multi-channel flat grinding elements, loading and unloading nozzles, characterized in that In order to increase the reliability of operation, the disintegrator is provided with an annular element mounted on the housing at the level of the upper rotor disk, while the inner surfaces of the first row of grinding elements are made with a bevel directed from the center at an angle kh & t g 0 where Рцб - centrifugal force; f is the coefficient of friction; G - body weight, moreover, the axial gap between the grinding elements does not exceed the size of the gap between the rows of grinding elements. 2. Disintegrator according to Claim. 1, characterized in that a pocket is formed in the housing.