SU1761274A1 - Grinder working body - Google Patents

Abstract

Use: in the technique of grinding various materials. SUMMARY OF THE INVENTION: The grinding body comprises a disk 1 with tides 2, holes of the boom 3, radially located in the thinned part of the working disk with a central hole 4, cavity 6, for transporting material under the grinding disk of the chute 6, band 7, lining grinding disk 1. end flanges tides fitted with flanges. 5 з п. Ф-лы. 2 Il.

Description

The invention relates to the technique of grinding various materials, in particular to the grinding bodies of rotary drum mills, and can be used in the beneficiation, chemical, construction and other industries.

Known grinding body, made in the form of a disk with flat parallel sides and a rounded rim of the disk.

This grinding body, when used in drum mills, does not provide high grinding efficiency due to the fact that during loading in bulk the disks are oriented parallel to each other during operation and the material between them is not crushed due to the absence of their relative displacement, and with vertical ordering their installation reduces the contact of the disk with the material being crushed.

The closest technical solution to the invention is a grinding body made in the form of a disk with central and peripheral holes.

equidistant from each other and from the center of the disk

This grinding body affects the material to be ground only around the perimeter of the disk, so the grinding efficiency is limited.

The purpose of the invention is to increase the grinding efficiency by organizing the process in mutually perpendicular directions, by affecting the grinding body in mutually perpendicular directions, reducing material overgrinding by removing the fine product from the grinding zone, controlling the load on the grindable material by changing the mass of the disk, improving maintainability reduce wear and create stress uniformity in the comminuted material.

This goal is achieved by the fact that the B grinding body is made in the form of a disk with central and peripheral holes, the latter is made in the middle part with supporting tides, and the end parts of the tides are flanged.

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Serial holes can be made on the loading side with recesses in the form of buckets, and on the discharge side - with a bevel with an angle greater than the angle of repose of the material being crushed, and supporting tides provided with a chute around the perimeter, equidistant from each other can be made in the supporting tides and from the center of the disk of the cavity for inserts, the disk around the perimeter can be provided with a bandage, made with the possibility of changing its width, and of elastic material.

In the drawing of FIG. 1 shows a general view of the grinding disk: FIG. 2 - cross section.

The grinding disk 1 has tides 2, holes of the bucket 3, located along the radius in the refined part of the working disk, the central hole 4, and the cavity 5 in the tides. On the tides there are gutters 6 for transporting material under the grinding disc lined with a bandage 7 of wear-resistant material, for example polyurethane or rubber.

The end parts of the tides are flanged 8.

The action of the grinding disk during the grinding process is carried out as follows.

The material to be ground, which falls under the grinding discs 1, is freely rollable, but mounted close to each other with the possibility of displacement relative to each other. When the drum rotates, the material to be ground is placed at a dynamic angle, penetrates into the space between the disks 1, is captured by buckets 3. made in the disks radially, transported along the bevel of the bucket, and unloaded towards the discharge side and down the center of the disk plate, rolls along the grooves 6 formed in the tides of the disk and the slippery along the chute is dropped forward and under the disk,

In the tides of the disk, through cavities 5 are made at a smaller radius from the center, which serve to change the weight of the disk by inserting inserts symmetrical from the center, the weight of which depends on the strength of the material being crushed and the required disk weight, which is selected depending on the specific pressure on the area of the material being crushed .

Loading a layer of grinding material during rolling of the disc occurs

through elastic bandages 7, which reduce the wear of the grinding disks. Through holes of the bucket 3, made in the disks, facilitate the passage of aspiration air, which crosses the material being poured, extracts and transports fine particles of the required size.

The use of grinding media in the form of discs allows grinding in various modes, from selective grinding of multicomponent materials to fine grinding of monocomponent materials.

Claims (6)

1. Melting body, made in the form of a disk with central and peripheral apertures, equidistant from each other and from the center of the disk, characterized by that, in order to increase the grinding efficiency by acting on the grinding body in mutually perpendicular directions, the disk is made in its middle part with supporting tides, and the end parts of the tides are flanged. 2. The meting body according to claim 1, which is such that, in order to reduce the overgrinding of the material by withdrawing the fine product from the grinding zone, the peripheral holes are made on the loading side with recesses in the form of buckets , and from the unloading side - with a bevel with an angle exceeding the angle of repose of the ground material, and supporting tides are provided around the perimeter of the gutter. 3. Grinding body on PP. 1 and 2, that is, in order to regulate the load on the material being crushed by changes in the mass of the disk; in the reference tides, cavities are made equidistant from one another and from the center of the disk to allow for relaxation. 4. Grinding body on PP. 1-3, that is, in order to improve repairability, disk around the perimeter is provided with a bandage. 5. Grinding body on PP. 1-4, that is, that the bandage is made with possibility of changing its width. 6. Melt body on PP. 1-5, that is so that, in order to reduce wear and create uniformity of stresses in the material to be ground, the bandage is made of an elastic material. 1761274 Compiled by I. Bibina Tehred M.MorgentalKorrektor I.Musk 7 Phage. 2