RU32708U1 - SHINING BODY - Google Patents

Description

SHINING BODY

The utility model relates to grinding bodies for drum mills and can be used in grinding equipment, in particular, in the mining and processing industry and the building materials industry.

Known grinding body described in the same name AS, No. 377992 of the USSR according to class. B02C 17/20, s. 11/23. 66, op. 08/07/73.

Known grinding body is made of wear-resistant material in the form of a ball composed of several parts fastened by rotationally symmetric coupling joints.

A disadvantage of the known grinding body is the complexity of its manufacture.

Known grinding body described in the eponymous A. USSR No. 772582 by class B02C 17/20, s. 02/08/79, op. 10/25/86.

Known grinding body contains a core of heavy metal, a damping shell of manganese-vanadium alloy and an outer wear-resistant shell made of 60-93% of boron carbide powder on a bunch of wear-resistant elastic material.

A disadvantage of the known grinding body is the complexity of its manufacture.

It is known grinding body described in the same name a. from. USSR No. 808141 by class B02C 17/20, s. 05/03. 79, op. 02/28/81.

Known grinding body consists of a shell and spherical 5scra made of heavier material, while the center of the core is offset from the center of the grinding body, the maximum value

2003113685

MKI-7: V02S 17/20

the relative displacement L of the center of gravity of the disturbing body C from the center of symmetry O, referred to the radius of the grinding body, is:

L (1.p-C) (1-pg) / l-r (l-p), where r is the radius of the nucleus;

C is the minimum shell thickness referred to the radius of the grinding body;

p is the specific gravity of the core material, referred to the specific gravity of the shell material (intermediate layer).

A disadvantage of the known grinding body is the complexity of its manufacture.

The grinding body is known, described in the author’s eponymous copyrights of the USSR No. 1636047 according to class. B02C 17/20, s. 04/05/89, op. 03/23/91.

Known grinding body contains a core made in the form of a set of balls, and a shell in the form of a hollow sphere consisting of two hemispheres with holes, and the diameter of the holes is less than the diameter of the balls.

A disadvantage of the known grinding body is the complexity of its manufacture.

Known grinding body described in A.S. USSR No. 391854 Roller for a centrifugal mill in class. B02C 17/20, s. 04/10/71, op. 07/27/73. Known grinding body is a roller containing side and end surfaces made in the form of curved conical surfaces.

A disadvantage of the known grinding body is the complexity of its shape and, as a consequence, the complexity of manufacturing.

It is known grinding body described in the same name a. from. USSR No. 1187877 by class B02C 17/20, s. 04/29/84, op. 10.30.85.

A known grinding body is a body of revolution, the surface of which is formed by the rotation of an ellipse around it

minor axis, while the eccentricity of the ellipse is selected within O, 3-0, 8.

A disadvantage of the known grinding body is the complexity of its manufacture.

It is known grinding body described in the same name a. from. USSR No. 1546141 by class B02C 17/20, s. 04/19/88, op. 02/28/90.

Known grinding body is a cylindrical body of revolution, the height of which is 0.8-1.1 of the diameter of the base. A disadvantage of the known body is that for various sizes of the diameter of the cylinder it is necessary to select the appropriate height.

It is known grinding body described in the same name a. from. USSR No. 1001999 by class B02C 17/20, s. 10/02/81, op. 03/07/83.

Known grinding body contains a cylindrical part, turning 1/5 ... 1/6 of its length into a tapered shank, the cone of which is inclined to the axis of the rod at an angle of 8-12 °, corresponding to the desired angle of capture of the piece, excluding extrusion in the opposite direction .

A disadvantage of the known grinding body is the complexity of its shape and its manufacture.

Grinding bodies are known, described in the book of the author A. Taggerat. Basics of ore dressing. Metallurgical Publishing House 1958, p. 396, 403.

Known grinding bodies are made in the form of steel balls, rods, cylinders or cylinders.

Their disadvantage is low wear resistance against abrasion and corrosion.

Closest to the technical nature of the claimed is the grinding body described in paragraph Germany. No. 1244534 class 50 from 15/30, 1964 selected as a prototype.

The known grinding body has the form of a geometric body with a second-order surface containing an inner core forming a contact pair with the carbon steel of the grinding body. A disadvantage of the known grinding body is its not very high abrasion resistance, the complexity of manufacturing due to the presence of the core and the need to select materials for the formation of a contact pair and, as a consequence, the high cost. The purpose of the claimed utility model is to increase abrasion resistance and simplify the manufacturing technology of the grinding body while reducing its cost.

This goal is achieved by the fact that the grinding body, which has the shape of a geometric body with a second-order surface, ACCORDING TO THE USEFUL MODEL, is made of alloy steel having a hardness of at least 60 Rockwell units and is a rolling body from a used rolling bearing.

Moreover, the grinding body may be in the form of a ball or roller of a cylindrical, conical or spherical shape. The implementation of the grinding body of alloy steel with a hardness of at least 60 Rockwell units increases its abrasion resistance, which, combined with the use of a rolling body from a used bearing, simplifies the technology of its production and significantly reduces the cost of the grinding body. Typically, the requirements for rolling bodies in terms of dimensional tolerance are more stringent than for grinding bodies (in particular, at least an order of magnitude - see, for example, GOST 3722-81 and GOST 7524-89), therefore rolling bodies from bearings that have already reached their useful life For a long time they can be successfully used as grinding bodies.

Compared with the prototype, the inventive grinding body has novelty, differing from it by using a rolling body from a dead bearing and making it from alloy steel with a hardness of at least 60 Rockwell units, which together ensure the achievement of the goal.

The inventive grinding body can be widely used in grinding equipment in the construction, mining, metallurgical, chemical and other industries, therefore, meets the criterion of industrial applicability.

The inventive utility model is illustrated by drawings, where shown in:

-Fig. 1 is a general view of a grinding body made from a rolling body of a ball bearing;

-Fig. 2 is a general view of a grinding body made of a rolling body of a roller bearing.

The grinding body is made of alloy steel with a hardness of at least 60 Rockwell units and is a ball 1 when it is performed as a rolling body from a used ball bearing (Fig. 1) or roller 2 when it is made from a used roller bearing. In the latter case, a conical or cylindrical or spherical roller is used (Fig. 2a, 26, 2c).

Compared with the prototype of the inventive grinding body has a higher corrosion resistance, does not require complex manufacturing techniques and is much cheaper.

Claims (5)

1. A grinding body having the shape of a geometric body with a second-order surface, characterized in that it is made of alloy steel having a hardness of at least 60 Rockwell units and is a rolling body from a used rolling bearing. 2. The grinding body according to claim 1, characterized in that it has the shape of a ball. 3. The grinding body according to claim 1, characterized in that it is a cylindrical roller. 4. The grinding body according to claim 1, characterized in that it is a conical roller. 5. The grinding body according to claim 1, characterized in that it is a spherical roller.