SU1722575A2 - Crusher - Google Patents

Abstract

The invention makes it possible to reduce the force of crushing chips by arranging in a checkerboard order on the inner wall of the crusher body of the upper 11 and lower 12 knives with two cutting edges D, E and W, 3, respectively, turned at a right angle, and the carrier is made with bevels at the ends . 5 il.

Description

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The invention relates to crushers for grinding materials, can be applied in engineering, construction, mining, metallurgical and other industries and is an improvement of the invention according to the author. St. No. 1368037.

The known crusher has a body, a vertical shaft, a carrier with movable knives, the side surfaces of the carrier in the upper part are made with square-shaped shoulders, under which additional knives with a concave front surface are mounted, and a grid with fixed knives, and the working surfaces, knives form a cutting comb,

The disadvantage of such a crusher is that the grinding efficiency of the material is low (considerable efforts are made to destroy chips in the periphery between the crusher body and the ends of the carrier).

The purpose of the invention is to increase the grinding efficiency of the material.

To achieve this goal, in a staggered order, under each other, rows of knives are mounted, while the knives are made with two cutting edges, turned at right angles to each other, and the carrier is made with bevels at the ends, and the lower The rows of knives are longer than the upper ones.

FIG. 1 shows a general view of the crusher; in fig. 2 shows an arrow A in FIG. one; FIG. 3 is a view along arrow B of FIG. 2; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a cross-section of the FIG. four.

The crusher for grinding materials comprises a housing 1, on the inner surface of which pins 2 are mounted, led 3 with bevels at both ends, mounted on a vertical shaft 4 and made in cross section in the form of a trapezium, on both sides of a large base rectangular shoulders 5 are located, and on the side edges of the carrier 3 there are additional knives 6c with a concave front surface, a grill 7, a pin 8 mounted on the upper surface of the carrier 3, movable knives 9 mounted on the carrier 3, fixed knives 10 are fastened stacked on the grill 7, and the abrasive surfaces of the knives form a cutting comb. The upper knives 11 with cutting edges D and E and the lower knives 12 with cutting edges G and 3 are located on the inner wall of the housing 1.

The crusher also contains a scraper 13, a discharge chute 14, an actuator 15, a control unit 16 that provides reverse rotation of the carrier 3 in automatic mode and engine shutdown, an audible signal 17 warning the crusher operator to turn off the reverse.

The operation of the crusher is as follows.

The material to be crushed is loaded through the neck into the casing 1. With sharp edges of the shoulders 5 of the carrier 3, the material is cut, partially torn and fed to the blades of the additional knives 6. At the same time, the material, cut and compacted from the top, of the carrier 5 of the carrier 3, is cut by edges The upper side knives 11 and the edges J of the lower side knives 12, and the material carried by the carrier 3, is cut by the edges E of the knives 11 and the edges 3 of the knives 12, i.e. the material is fed to the knives in two planes located under the mym angle. The pre-crushed material partially falls between the knives 11 and 12, and partially slides along the bevels of the carrier 3, starting from the extreme movable knives 9 of the carrier 3, under the cutting comb, i.e. the material gripped by the carrier 3, is cut off and pre-crushed along its entire length , including the periphery (the volume between the crusher body 1 and the ends of the carrier 3). The pre-ground material enters the grate .7 and the fixed knives 10. The movable knives 9 of the carrier 3, which are rotated through the control unit 16, forming a cutting comb with the fixed knives 10, produce the final grinding of the material. The crushed material, the grate 7 and the scraper 13, are passed into the discharge chute 14. When foreign material gets in, the control unit 16 reverses the vertical shaft 4, the sound signal 17 is activated and the operator switches off the crusher.

Claims (1)

The invention Crusher for grinding materials according to ed. St. No. 1368037, characterized in that, in order to increase the grinding efficiency, on the inner wall of the housing, in a staggered order, rows of knives are mounted next to each other, while the knives are made with two cutting edges turned at a right angle relative to each other, and drove - with bevels at the ends, and the lower rows of knives are longer than the upper ones. fflfe / figm