SU1719065A1 - Working tool of crusher - Google Patents

Abstract

The invention relates to grinding devices. The goal is to increase the efficiency of the process of grinding stalked materials. The device comprises a plate of rectangular cross section with mounting holes, the cantilever part of which is bent at an angle of 90 °, while the bend line forms an angle with the radial axis that is 30-70 facing the working face. The working face and the inner face of the bent part of the plate make an angle of 30-70 °. 1 hp ff, 3 ill.

Description

The invention relates to grinding devices, in particular to grinders of coarse and succulent feeds, and can be used in feed preparation shops of livestock farms.

The aim of the invention is to increase the efficiency of the grinding process of stalked materials by providing hard impact.

FIG. 1 depicts a general view of the working body; in fig. 2 - the same, top view; in fig. 3 is a section A-A in FIG. 1.

The proposed tool body is a plate of rectangular cross section with mounting holes 1, the cantilever part of which is bent at / 90 °, with the bend line 2 forming an angle a with the radial axis 3 equal to 30 70 °. The working face 4 and the inner face 5 of the bent part of the plate make an angle of / 3 30-70 °.

The working body works as follows.

As the rotor rotates, the material being crushed is subjected to shock from the working bodies. The presence of the bent end increases the zone of interaction between the working body and the material being ground. The loading of the comminuted material in front of the working body will not be observed if the condition p is met, where p is the friction angle of the comminuted material on the surface of the working body. The overhang of the crushed material on the inner face 5 will not occur if a. 90 ° - knot. More effective splitting of stalked material occurs in case of pinching between the outer edge 6 of the bent part of the working body and the inner surface of the crusher body, when 90 ° - and 2 p.

Taking into account the fact that the most probable values of the friction angles of the working bodies for stalked materials are in

affairs p 20-30 °, angle a should be

30-70 °.

The overhang of the crushed material on the working face 4 is excluded by the fact that the working 4 and inner 5 faces of the bent part of the plate make an angle of p 30-70, since the centrifugal force acting on the feed particles during their circular movement inside the crusher body is parallel to the working face four.

The use of the invention in comparison with the known devices allows to significantly increase the degree of grinding, since increases the zone of interaction of the working body with the ground material. This ensures the preservation of impact stiffness, due to the absence

overhanging the particles of comminuted material on the bent part of the working body;

Claims (2)

Claim 1. The working body of the crusher containing a rectangular cross-section plate with holes for fastening and a cantilever part bent at an angle of 90 °, characterized in that, in order to increase the grinding efficiency of stalked materials, the limb line forms 30 with a radial axis -70 °, facing the working face of the cantilever part. 2. The working body according to claim 1, which means that the working and internal faces of the bent part of the plate make an angle of 30-70 ° with each other. figl 2 A-A srig.Z