SU1551416A1 - Mill - Google Patents

Abstract

The invention relates to the crushing and grinding of materials and can be used in the mining, metallurgical, coal and other industries. The goal is to increase the grinding efficiency. The material to be ground through the axial channel of the housing enters the internal cavity of the rings 3, on which the knives 4 are mounted with the possibility of radial movement. The knives 4 are also installed with the possibility of rotation in the direction of rotation of the ring 3. Under the action of the radial component of the mechanical action of the knives 4 and centrifugal forces from rotation of the rings 3, the material, undergoing additional destruction, is crushed into the slot, from where it enters the internal cavity of the housing and is discharged through the discharge window. 1 hp f-ly, 3 ill.

Description

The invention relates to crushing and grinding materials and can be used in mining, metallurgical, coal and other industries.

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

In FIG. 1 schematically shows a mill, a longitudinal section; in FIG. 2 is a section AA in FIG. 1, options.

The mill contains a housing 1 and a rotor 2, in which knives 4 (Fig. 1) are placed on removable rings 3 (Fig. 1), which can be mounted in the grooves of the ring using screws or wedges 5 (Fig. 2), the radial positions of the knives, as well as their orientation relative to the direction rotations are set depending on the processed material and the required degree of grinding. If it is necessary to adjust the orientation of the working edge of the knife 4 relative to the direction of rotation, it is placed on the hinge 6 and is fixed with adjustable stops 7 and 8. The adjustable stops can be made in the form of screws.

The mill operates as follows.

The knives 4 are set in a predetermined position and turn on the rotor 2 drive, after which the crushed material is fed through the axial channel of the housing 1 into the internal cavity of the removable rings 3. The part of the material filling the cavity of the ring 3 located on the rotor, rotating with it, interacts with the material, entering the cavity of the ring 3, placed in the housing 1, is subjected to self-grinding. Material falling into mutually shifting sectors bounded by knives 47 is chipped and moved to the periphery of the internal cavities in the direction of the exit slit 5 formed by the ends of the rings 3. Under.

By the action of the radial component from the mechanical action of the knives 4 and centrifugal forces from the rotation of the rings 3, the material, undergoing additional destruction, is pressed into the slot, from where it enters the internal cavity of the housing 1 and is discharged through the discharge window. The orientation of the working edge of the knife relative to the direction of rotation of rotation is changed if necessary by means of stops 7 and 8, the change of position of which ensures the rotation of the knife 4 in the hinge 6. Changing the shronting of the inserts 4 relative to the direction of rotation, the activity of one or another destruction mechanism can be controlled, which determines the degree of grinding of the material and operability of mill working elements.

Claims (2)

Claim 1. A mill comprising a housing and 30 installed in it a pair of rings rotating relative to each other, facing each other with end surfaces with grinding knives mounted in grooves of the rings with the possibility of radial movement ^{,, J} characterized in that, in order to increase grinding efficiency, the knives are also installed in the grooves of the rings with the possibility of rotation in the direction of rotation of the ring. 2. Mill pop. ^ characterized in that each knife is installed in the groove of the ring using a hinge with an adjustable emphasis. Aa