RU1793960C - Centrifugal mill - Google Patents

Abstract

Use: in grinding equipment and can be used to make cement. SUMMARY OF THE INVENTION: A centrifugal mill comprises a housing 1 with a cover 2. Mounted on a shaft 3, a disk 5 rotating in bearings 4 with a central sleeve 6 has accelerating partitions 7 and an annular peripheral part. The fixed disk 8 is made with ribs 9 and an annular peripheral part and is connected by means of springs to the body, 2 zp f-ly, 3 ill.

Description

The invention relates to measuring equipment for grinding ore and building materials.

A mill is known, comprising a housing with a rotating lower and upper disk mounted in it, connected by a spring to the housing and made with a central hole in which the lower part of the loading nozzle is located, a gear mounted on the upper part of the loading nozzle, with the possibility rotation, which is performed with forks located around the circumference on its lower end surface and with balls of various diameters mounted in the latter for rotation, interacting with the external torus oic upper surface of the disk, wherein the upper disk is joined to the lower part of the loading pipe by means of spherical surfaces on them.

A disadvantage of the known mill is the limited size of the grinding zone, which reduces the grinding efficiency.

The closest set of features to the invention is a device for grinding brittle materials, including a device for pre-crushing and a rotary grinder, consisting of a housing placed vertically inside it with a gap relative to each other of the rotating and stationary disks. The rotating disk is made in the form of a hollow truncated cone.

Both discs have an annular peripheral part. The fixed disc has a tapered work surface.

The disadvantage of the prototype is the limited size of the grinding zone, which reduces the grinding efficiency.

The purpose of the invention is to increase productivity by increasing the volume of the grinding zone.

This goal is achieved in that in a known centrifugal mill containing a housing, a rotating disk made in the form of a hollow truncated cone placed vertically with a gap relative to each other, and a stationary disk with a conical working surface, both disks having an annular peripheral part, stationary the disk is made in the form of a hollow truncated cone connected by means of a spring to the housing, and its conical working surface is provided with evenly spaced ribs, the inner cavity being rotated The disk is divided by partitions into sections.

The goal is also achieved by the fact that the surfaces of the annular peripheral parts of the disks are conical.

The goal is also achieved by the fact that the gap between the disks is made uniform in thickness.

Figure 1 shows a centrifugal mill; FIG. 2 is a section A-A of FIG. 1; on the

0 figure 3 is a section bB of figure 1.

The centrifugal mill comprises a housing 1 with a cover 2 mounted on a shaft 3, a disk 5 rotating in bearings 4, made in the form of a truncated hollow cone

5 to 6 with an annular peripheral part, the inner part of which is divided by radial accelerating partitions 7 into sections, a fixed disk 8, made in the form of a truncated hollow cone with an annular peripheral part, on the inner working conical surface of which ribs 9 are fixed, evenly spaced along the generatrices of the cone. Moreover, the disks 8 and 5 are located along the same axis with annular peripheral parts to each other with a uniform gap, and the working surfaces of the peripheral annular parts of the cup-shaped disks 5 and 8 are conical with an acute angle between

0 generatrix of the cone and base.

The centrifugal mill contains a discharge pipe 10 installed in the Central hole of the stationary disk 8, a discharge pipe 11, a drive (not

5 is shown). The fixed disk is connected via a spring. 12 to the housing 1.

Centrifugal mill operates as follows.

The crushed material passes

0 through the annular gap formed by the working surfaces of the peripheral annular parts of the cup-shaped disks 8, 5, where large particles are further crushed by jamming between them, the angle between the generatrix of the cone and the base of the peripheral parts of the cup-shaped disks made conical, sharp and changing ranges from 1 to 15 ° depending on the type of material being ground.

When an unbreakable object enters the gap between the disks, the fixed disk 8 is deflected in the axial direction and returned to its working position by

5 springs 12.

The grinding takes place under the influence of friction forces arising from the difference in the rotational speeds of the parts of the material being crushed, which are in the fixed disk 8 and the rotating disk 5. The crushed material is removed through the discharge pipe 11.

The design of the disks in the form of hollow truncated cones makes it possible to increase the grinding performance by increasing the volume of the grinding zone in which the destruction of material particles occurs.

Claims (3)

1. A centrifugal mill comprising a housing, a rotatable disk made in the form of a hollow truncated cone placed vertically therein with a gap relative to each other, and a stationary disk with a conical working surface, both disks having an annular peripheral part, from the side. In addition, in order to increase productivity by increasing the volume of the grinding zone, the fixed disk is made in the form of a hollow a truncated cone connected by means of springs to the housing, and its conical working surface is provided with evenly spaced ribs, the inner cavity of the rotating disk being divided by partitions into sections. 2. A mill according to claim T. characterized in that the surfaces of the annular peripheral parts of the disks are conical. 3. Mill according to paragraphs. 1 and 2, from l and h a torn, and - so that the gap between the disks is made uniform in thickness.