SU1450887A1 - Arrangement for separating loose materials by size - Google Patents

Abstract

This invention relates to a technique for separating bulk materials by size and may be. applied in the coal, mining, construction sectors of the industrial sector and at the enterprises of the industrial complex. The purpose of the invention is to improve the quality of the separation of materials into fractions by eliminating sticking of the cells of the slit pseudo-sifting surface, intensifying the destruction of lumps and loosening the material of high humidity. Case (K) 1 of the device is inclined to the horizon from O to, In K 1 is installed with the possibility of rotation of a series of rollers (B) 2 arranged in one positon with working elements hinged on them. The latter are made in the form of uniformly distributed along the length. B 2 rods lined with wear-resistant material (C) 3. C 3 of each B 2 are placed as they rotate in the gaps between C 3 adjacent B 2, forming a screening surface. Above the screening surface, K 1 speed-dampers are attached; they are made in the form of aprons 7 with ut yellows 8 or in the form of hinged grid bars. The material under the action of the rapid rotation C 3 C 3 is distributed over the screening surface, intensively loosens and sieved into the cells formed by C 3 and B 2. Part of the fine material, falling on the fast rotating C 3, comes up against dampers, loses speed and falls into the cells. 5 hp ff, 3 ill. (About ate about 00 00

Description

The invention relates to a mineral processing technique, namely to devices for separating bulk materials by sorting, and can be used in the coal, mining, construction industries, as well as in the enterprises of the agro-industrial complex (Pex.

I The purpose of the invention is to improve the quality of the separation of materials into fractions due to the exclusion of sticking of the cells of the slit pseudo-protruding surface, intensification of the destruction of the lumps and loosening of the material. moisture,

Figure 1 shows a General view of the device, a longitudinal section; FIG. 2 is a view A of FIG. 1; Fig. 3 shows section 2B-B in Fig. 1 with modified speed dampers.

The device comprises a housing 1 and a row of rollers 2c installed in the housing in the same plane in parallel with the working elements (rods) 3, made in the form of rods of rods uniformly distributed along the length of the rollers forming the screening surface

one ends of which are free, and the second

hinged on the axis x 4 rigidly mounted on the disks 5; The rods 3 of each roll 2 as they rotate are placed in the gaps between the rods of the adjacent rolls. The rods are lined with elastic wear-resistant material. The distance between the rods 3 is maintained by sleeves 6,

To the body 1 above the screening surface, there are also attached dampers, made in the form of elastic aprons 7 with fittings 8 or in the form of hinged grid bars 9 (Fig. 3). On housing 1 there are also loading chute 10 and discharge ganging chutes 11 and 12 for the undersize and undersize products.

The housing 1 is hinged by the middle part on two brackets 13, and the rear part - on two brackets 14 equipped with adjusting screwdrivers 15. With these holes and bolted joints 16, the housing 1 is displaced relative to the brackets 14 and thereby adjustable if necessary to a horizon ranging from 0 to ± 18, the device operates as follows.

five

Q

d

five

. The source material from the loading chute 10 enters the screening surface formed by a series of rolls 2 arranged parallel to each other in one plane, the cells of which form; are driven during the rapid rotation of the working elements 3 and sleeves 6 pivotally suspended on the axis x 4,

The material under the action of the fast-rotating working elements 3 is distributed over the screening surface, loosens intensively and moves to the discharge chute 11, and small classes of material spill through the screening cells into the discharge chute 12 of the undersize product. In order to reduce over-grinding of the starting material, the working elements 3 and the sleeves 6 of the futerolans are wear-resistant elastic material, for example wear-resistant rubber or polyurethane. The inclination of the housing 1 in the range from 0 to + 18 ° to the horizon, depending on the physical properties of the bulk material, ensures an optimal speed of movement of the source material, increases the residence time of the material on the screening surface and ensures maximum efficiency of its separation by size.

Part of the fine material, falling on the fast-rotating working elements 3, is carried along with the coarse material into the discharge chute 11,

To prevent the removal of small classes of material in the housing 1 above the screening surface between the rollers 2, speed absorbers are fixed, made in the form of resilient, for example rubber, aprons 7 with fittings 8,

The fine grains of the material, reflected from the speed dampers, lose speed and fall through the cells of the screening surface into the discharge chute 13,

When sowing material prone to sticking, preference is given to speed dampers made in the form of hinged grate 9, In this case, along with the delay of small fractions of the material, lumps of material are destroyed

50

Claims (6)

Formula invented and 1, A device for dividing bulk materials by size, including a body, screening the surface in the form of rolls installed with a housing with working elements hinged on them, in order to improve the quality of material separation into fractions due to avoiding sticking of the cells of the slit pseudoprosiking surface, intensifying the destruction of lumps and loosening the material of increased moisture, the rolls are located in the same plane with the possibility of rotation, and the working elements They are made in the form of rods uniformly distributed along the length of the rolls, the rods of each roll being placed in the gaps between the rods of the adjacent rolls. 2. The device according to claim 1, about t l and often because the rods are lined with an elastic wear-resistant material. 3. The device according to claim 1, characterized in that the housing with the rotors is installed with the possibility of changing the angle of inclination to the horizon in the range from 0 to IS. . 4. The device according to claim 1, of which is that it is provided with speed dampers. 5, The apparatus according to claim 4, 4, and that is so that the dampers of the velocity are made in the form of elastic aprons with irides installed above the screening surface. 6. A device according to claims 1 and 4, characterized in that the speed dampers are made in the form of 1 hinged grate. 71 rig1 6-6 Srigz