SU1766511A2 - Crusher - Google Patents

Abstract

Using; for grinding mineral substances with a hardness of up to 4 on the Mohs scale in the building materials industry, in the mining, metallurgical, chemical, paintwork, food and other fields of technology. SUMMARY OF THE INVENTION: The crusher additionally comprises on a vertical shaft a cone with a disc at the base, installed with a gap with the lower ring of the classifier and a cutter above the knives. 1 il.

Description

The invention relates to a technique for grinding material with a hardness of up to 4 on the Mohs scale, can be used in the production of building materials, in the chemical, paint and varnish, food and other sectors of the national economy and is a further development of the invention in accordance with the author. No. 1719068.

A crusher is known, comprising a housing with a classifier, inside which impact elements are fixed on a vertical shaft, an actuator according to the invention, impact elements made in the form of knives, the length of which increases in the direction of movement of the material, and the classifier in the form of a set of vertically arranged with a gap relative to each other rings, and the knives are installed in the plane of the slots of the classifier.

When crushing the material, pieces of such sizes can fall that do not pass between the knives, and the undersized material can accumulate at the bottom of the classifier under the lower knife, which complicates the maintenance of the crusher.

The aim of the invention is to improve the operating conditions.

This goal is achieved by the fact that in the crusher, according to auth.St. No. 1719068 vertical shaft is provided with a cone with a disk at the base, installed with a gap with the lower ring of the classifier, and a milling cutter above the knives.

Installing the cutter above the crusher knives allows you to pre-destroy large chunks without restriction that fall into the loading device, and thereby simplify the control of the raw materials coming in by size.

The cone on the vertical shaft strengthens the crusher knives, since an increase in length leads to a decrease in their rigidity. The installation of the disk in the lower part of the classifier allows the production of the grain size of the particles larger than the width of the slit, in the case of such to the bottom of the classifier, or simply to remove the crushed raw material, C

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Some did not manage to be removed through the classifier's overlying slots. All this simplifies the conditions of operation of the installation.

The drawing shows a schematic crusher.

The crusher includes a housing 1, on which the input device 2 for feeding the initial material is placed, the output device 3 is the finished product. A classifier 4, a vertical shaft 5 connected to drive 6 and having knives 7, 8, 9, 10 of different lengths and a cone 11 with a disk 12 at the base installed with a gap to the bottom classifier 4 are mounted inside the body. Above the blades is mounted milling cutter 13.

The outer surface of the classifier 4 and the inner surface of the housing 1 form a discharge cavity 14.

The crusher works as follows.

The source material through the input device 2 enters the rotating mill 13 and the knives 7, 8, 9, 10. When struck, they are destroyed and due to centrifugal forces move in the direction of the classifier 4 and through its gaps are continuously removed into the discharge cavity 1, from where to output device 3.

The use of the device makes it possible to improve the operating conditions by reducing the cost of controlling the size of the raw material and simplifying maintenance.

Claims (1)

Invention Formula Crusher for auth. No. 1719068 (application No. 4780518/33), characterized in that, in order to improve the operating conditions, the vertical shaft is provided with a cone with a disk at the base, installed with a gap with the lower ring of the classifier and a cutter above the knives.