RU2287371C1 - Hummer crusher - Google Patents

Abstract

FIELD: disintegrating.

SUBSTANCE: hummer crusher comprises crushing chamber, hopper with the charging throat, and grate mounted over periphery of the crushing rotor with hummers. The grate is made of segments arranged so that the radial space between the grate segments and rotor hummers periodically decreases in the direction of rotation of the rotor from the charging throat. The back side of the edge of each opening of the grate projects toward the center of the rotor in the direction of its rotation, and the charging throat is mounted tangentially.

EFFECT: enhanced efficiency.

2 dwg

Description

The invention relates to a device for grinding grain feed, as well as other bulk materials used for feeding animals.

Known hammer mill for grinding grain type A1-DMR-12, which contains a crushing chamber consisting of a rotor with hammers and a sieve made in the form of a covering ring (Kulakovsky I.V., Kirpichnikov F.S., Reznik E.I. Machines and equipment for the preparation of feed. Handbook. - M .: Rosselkhozizdat, 1987. - Part 1. p. 140).

A disadvantage of the known design of the hammer mill is that the annular layer of the crushed material that occurs inside the crushing chamber during rotation of the rotor acquires a high peripheral speed and reduces the efficiency of the interaction between the hammers and the crushed material, while the role of the sieve as a passive grinding organ remains negligible, this leads to additional unproductive energy costs.

The invention closest in technical essence is a hammer crusher containing a crushing chamber, a hopper with a loading neck, a sieve mounted on the periphery of the crushing rotor with hammers (RU 764721 A, 09/30/1980).

The disadvantage of the crusher is its large dimensions and the fact that the role of the sieve as a grinding organ remains insignificant, this leads to additional unproductive energy costs.

The objective of the invention is to increase the efficiency of the grinding process, reducing metal consumption.

This task is achieved in that in a hammer mill containing a crushing chamber, a hopper with a loading neck, a sieve mounted on the periphery of the crushing rotor with hammers, the sieve is made in the form of segments arranged so that the radial clearance between the sieve segments and the rotor hammers is periodically decreases in the direction of rotation of the rotor, starting from the loading neck by an amount from Smax to Smin, while the back of the edge of each sieve opening protrudes toward the center of the rotor in the direction of its rotation, and dressing mouth mounted tangentially.

The invention is presented in the drawings, where:

figure 1 presents a hammer mill, a cross section;

figure 2 - sieve segment on an enlarged scale.

The hammer crusher consists of a crushing chamber 1, a hopper 2, a tangentially installed loading neck 3, a rotor 4 with pivotally fixed hammers 5 and a segment sieve 6.

The sieve 6 in the crushing chamber 1 is made in the form of segments 7 so that the radial clearance between the edges of the segment 7 of the sieve 6 and the hammers 5 of the rotor 4 periodically decreases in the direction of rotation of the rotor 4 from the loading neck 3 by an amount from Smax to Smin, due to which the back part 9 the edges of each hole 8 of the sieve 6 along the rotation of the rotor has a protrusion to the center of rotation of the rotor.

Hammer crusher works as follows. Grain from the hopper 2 through the loading neck 3 enters the crushing chamber 1, where, falling under the blows of the hammers 5, it is partially crushed and carried away in a circular motion. The crushed particles that have reached the passage size exit through the openings 8 of the sieve 6 as a finished product. The implementation of the sieve installed on the periphery of the rotor 4, with a periodically decreasing radial clearance between the segments 7 of the sieve 6 and the hammers 5 of the rotor 4 in the direction of rotation of the rotor 4 from the loading neck 3 by an amount from Smax to Smin will reduce the speed of the rotational movement of particles inside the chamber due to protruding the back of the edges of each hole 8 of the sieve 6 to the center along the rotation of the rotor 4, will increase the speed of collision of the hammers 5 with the crushed material. In addition, the efficiency of the grinding process will also increase as a result of chipping particles of the crushed material on the protruding edges 8 of the sieve 6.

Claims (1)

A hammer crusher containing a crushing chamber, a hopper with a loading neck, a sieve installed on the periphery of the crushing rotor with hammers, characterized in that the sieve is made in the form of segments arranged so that the radial clearance between the sieve segments and the rotor hammers periodically decreases in the direction of rotation of the rotor starting from the loading neck by an amount from Smax to Smin, while the back of the edge of each sieve opening protrudes toward the center of the rotor in the direction of its rotation, and the loading neck sets hen tangentially.

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