RU70155U1 - APPLICATION OF ROLLING BODIES OF ROLLING BEARINGS AS A SHINING BODY - Google Patents

Abstract

The utility model relates to the technique of grinding mining raw materials and other materials, namely, to the grinding organs of drum mills, and can be used in industrial grinders using grinding bodies. As a grinding body, rotation bodies of worn bearings are used, traces of wear of rotation bodies of which are favorable for the operational characteristics of grinding bodies. As a grinding body, rotation bodies rejected in the manufacture of bearings are used. The grinding body is a ball. The grinding body is a cylindrical roller. The grinding body is a conical roller. The grinding body is a spherical roller. 5 cp f-ly.

Description

Technical field

The utility model relates to the technique of grinding mining raw materials and other materials, namely, to the grinding organs of drum mills, and can be used in industrial grinders using grinding bodies.

State of the art

A grinding body in the form of a ball with a radius of curvature equal to or greater than the curvature of the grinding body itself is known (SU No. 376117, class B02C 17/20, 1973).

The use of a grinding body with spherical depressions in the known device improves the grinding efficiency of small and thin grains by increasing the interaction surface of the balls when the convex surface of one ball comes into contact with the depression of another ball, however, the disadvantage of the known device is the complexity and cost of manufacturing grinding media.

Closest to the claimed utility model in technical essence is the grinding ball-shaped body adopted by us as a prototype for drum mills with the ones made in it

recesses in the form of closed annular grooves encircling the grinding body with a radius of curvature of the groove forming a groove equal to 0.3-1.5 of the radius of the spherical surface of the grinding body (RU, No. 2203138, M. Cl. ⁷ : B02C 17 / 20,2001 g .).

The disadvantages of the prototype are as follows:

- different diameters of the protrusions and depressions of the grinding bodies limit the efficiency of obtaining small fractions of grinding the product;

- the complexity of manufacturing a grinding body, which determines its significant cost.

Utility Model Disclosure

The objective of the utility model is to increase the efficiency of the technological process of grinding the product by reducing the cost of grinding media.

This task is achieved by the fact that as the grinding body, rotation bodies of worn bearings are used, traces of wear of which are favorable for the operational characteristics of grinding bodies.

As a grinding body, rotation bodies rejected in the manufacture of bearings are used.

The grinding body is a ball, a cylindrical roller, a conical roller, a spherical roller.

Utility Model Implementation

The grinding body is a rotation body manufactured in accordance with the relevant GOSTs and TUs for rolling bearings that have fulfilled their useful life and are also rejected in the production of rotation bodies. At the same time, the efficiency of using bodies of revolution increases significantly, both due to the low cost of products and due to the presence of signs of wear on them - grooves formed by the action of separators or bearing cages on them during their operation. Grooves contribute to intensive grinding of the material, as pieces of material overlap the corresponding recesses, resting on the edges of the groove, and shock contacts

bulges and recesses of grinding media cause additional bending loads, destroying the material at a lower cost of the kinetic energy of the grinder.

The claimed proposal works as follows. In the rotating drum of the mill, collisions of grinding media (balls or rollers) occur. At the same time, pieces of the crushed material (solid fuel ores, etc.) located in the contact zone of grinding bodies perceive their kinetic energy and are destroyed.

Experience has shown that the grinding efficiency of the material is improved while being used in the grinder together with the balls of the rollers. Then the probability of breaking pieces of material by bending increases.

The sizes of grinding media are selected depending on the hardness, size and other characteristics of the material being ground. At the same time, it is known that in enrichment plants, to increase productivity, they simultaneously load different size grinding media into mills.

Technical Results

The claimed utility model has the following technical results:

Grinding bodies, especially when used as grinding bodies are rotary bearings of bearings that have worked out their life (they are no longer suitable as rotation bodies, while they perfectly cope with the role of grinding bodies) have higher technical characteristics in terms of strength, wear resistance and other indicators;

- in contrast to the known grinding media, especially cast iron, whose fragments clog the grinder grinders and require stopping of equipment for maintenance, the proposed grinding media do not have this drawback;

- traces of wear of bodies of rotation of rolling bearings (traces of friction of separators, etc.) are favorable for efficient grinding of the product, the particles of which fall into the corresponding grooves and are intensively crushed;

- the use of bodies of rotation of bearings for a new purpose actually opens before them a second life associated with the economic, organizational and other advantages of grinding bodies.

As the practice of using the claimed utility model showed, its use in the mining, construction, cement, food and other industries leads to the reduction of the cost of very energy-intensive processes of grinding solid materials and gives a significant economic effect.

Claims (6)

1. The use of bodies of rotation of rolling bearings as grinding media for drum mills, characterized in that the grinding media are used rotation media of worn bearings, wear traces of rotation of which are favorable for the operational characteristics of grinding media. 2. The use of bodies of revolution according to claim 1, characterized in that as the grinding bodies are used bodies of revolution, rejected in the manufacture of bearings. 3. The use of bodies of revolution according to claim 1 or 2, characterized in that the bodies of revolution are balls. 4. The use of bodies of revolution according to claim 1 or 2, characterized in that they are cylindrical rollers. 5. The use of bodies of revolution according to claim 1 or 2, characterized in that they are conical-shaped rollers. 6. The use of bodies of revolution according to claim 1 or 2, characterized in that they are spherical rollers.