SU862972A1 - Material disintegrating apparatus - Google Patents

Description

(54) DEVICE FOR CRUSHING MATERIALS

. one

The invention relates to a device for crushing grain or other cereals, as well as products that require multiple stages in crushing. It can be applied in the milling, feed preparation, as well as in the mining industry.

A cone crusher is known, containing crushing cones fixed on a vertical drive shaft, forming two-stage crushing chambers with external fixed cones l.

However, this crusher has a lot of weight, considerable structural complexity and requires frequent debugging.

Closest to the invention to the technical essence is a device for grinding materials, containing a fixed crushing cone and an internal movable crushing cone, having armor plates on the working surfaces in the form of annular corrugated elements t l The disadvantage of this device is that it does not allow em. lead multistage crushing. In addition, it is impossible to avoid regrinding the finished product.

since the structure of the crushing chamber does not allow for the removal of intermediate crushing fractions from it.

The purpose of the invention is to improve the quality of the finished product by adjusting its particle size distribution.

This goal is achieved by the fact that in a device for grinding materials containing a stationary crushing cone and an internal movable crushing cone, having armor plates on the working surfaces in the form of annular grooved ribs, the ribs 15 are mounted, and between them Both cones are formed by opposite circular gutters, of which lx are connected with chutes, which are made in the body of the stationary fraction 20 of the cone for loading and unloading the products of the intermediate grinding stages.

The drawing schematically shows a device for grinding materials, a general view.

The device consists of an external stationary cone 1 and an internal rolling cone 2, in which external grinding armored plates are fixed in 30 kind of annular grooved; by owls 3 and

internal 4 of the same design, having a cooling system 5, intermediate bins, opposite circular grooves b and 7, loading leaks 8 and unloading 9.

The outer 1 and inner 2 cones can be made by welding individual parts or by casting steel, cast iron or their substitutes and are designed to accept the main loads during grinding and assembly of all grinding units

The outer 3 and inner 4 grinding ring belts are designed for grinding material (cereals or ores) and are made of steel, cast iron or their substitutes. They can be solid or detachable and are manufactured by rolling, die casting and centrifugal casting. They are ground on the grinding surface in the form of flute or other roughness, depending on the crushing stage. They are mounted on the cones and fastened by known methods.

The cooling system 5 is designed to maintain the required temperature of the grinding rims, is made of highly heat-conducting material (aluminum, copper or their substitutes) by the method of casting, stamping, centrifugal casting and has two or more holes inside to pass through a liquid, emulsion or air, by means of which heat is removed.

. The annular grooves b and 7 form bunkers for partial collection of the product between the crushing stages, are made of metal or its substitutes by known methods, and the bunkers can have sieves to exclude a certain fraction from the crushing cycle. Boot 8 and unloading 9 chutes are designed to load and unload the intermediate grinding product and are made of metal or plastic pipes. The loading chutes are located above the discharge chutes vertically, and the loading chutes horizontally are located at the beginning of the circle of rotation of the annular belt, and the discharge chutes are located in the buck.

The device works in the following way.

After assembly and adjustment, the grinding device is ready for operation. Before being put into operation, grain, cereals, salt, ore, etc., is loaded for grinding. The drive is driven and the moving cone 2 begins to rotate around its axis. As the rolling cone rotates, the material begins to flow into the gap between

grinding on the 3 and 4 themselves. The material that falls between the corrugations breaks, and since the rifles are cut at an angle, the partially crushed mother enters the intermediate bunker J between the ring grooves 6 and 7. If the production technology requires, then this product coarse grinding can be partially extracted through the discharge chute 9. Also this gap between the exact bunker can be partially loaded using the chute loading 8 with the same grinding product.

Further, the product of the first grinding enters the second stage of grinding (grinding). In this stage

The 5 rifles are made smaller and therefore grinding is done more finely. Just as in the first case, the material, crushed more finely, enters the second intermediate bunker.

0 from where you can take a portion of the crushed material or add material to the bunker. Next, the material enters the third stage of crushing. In the third stage, the grinding for SA 3 and

5 4. apply smaller rifles or even make the surface roughened. In this crushing stage, the material is crushed even finer and enters the next intermediate hopper, etc.

- until the final grinding.

The use of the invention allows to reduce the energy consumption for grinding. to reduce product losses during transportation and the storage capacity of the device.

Claims (2)

1. Author's certificate of the USSR № 31742, cl. B 02 C 2/00, 1931. 2. Patent SZNA 3938317, CL.241-.246. 1976.