SU1701400A1 - Method and device for screening loose materials - Google Patents

Abstract

The invention relates to the separation of bulk materials (SM) by size and m. used in mining, metallurgical, coke-chemical and construction industries in the separation of SM into fractions of particles, the purpose of the invention is to increase the efficiency of screening. A device for carrying out the screening method comprises oscillating duct 2 with a sieve 3, over which the fins (P) 9 are mounted. P 9 installed along the duct 2 in a checkerboard pattern with the possibility of changing the distance between itself and the sieve 3 and at an angle to its surface. The CM layer on the oscillating sieve 3 is affected by transverse vibrations which are transferred to it by P 9. The height of this layer is limited to 0.3-0.6 N, where H is the height of the layer of material on the sieve 2 s. f-ly, 6 ill.

Description

WITH

with

This invention relates to a technique for the separation of bulk materials by size and can be used in the mining, metallurgical and coke industry and construction sectors of the industry for the separation of bulk materials into fractions by particle size.

The purpose of the invention is to increase the efficiency of screening.

FIG. 1 shows a device for carrying out the method of screening bulk materials, a section; in FIG. 2, view A in FIG. 1; FIG. 3 is a flow chart of the screening of bulk materials; FIG. figure 4 - section bb in fig.Z; Fig. 5 shows an embodiment of the transverse block; figure 6 - section bb In figure 5.

A device for carrying out the method of pea granular materials consists of a screen with spatial oscillations.

consisting of frame 1, box 2 with sieve 3, loading platform 4, exciter 5, pallet 6

Box 2 is supported on frame 1 through elastic elements 7. On box 2 above sieve 3, transverse blocks 8 are installed with longitudinal ribs 9. installed relative to each other in a checkerboard pattern with the possibility of adjusting the distance between themselves and the sowing surface.

To ensure high screening efficiency when processing different materials at different loads, even at different sizes of the layer of the processed material with different granular composition, it is necessary to adjust the distance between the ribs 9 along the length and width of the sieve and between the ribs and the sieve 3

-h | ABOUT

J

ABOUT

about

Adjusting the distance between the ribs 9 across the width of the sieve is done by displacing and fixing the ribs 9 in the desired position on block 8, as well as removing or installing the required number of ribs 9.

Adjusting the distance between the ribs 9 along the length of the sieve is done by displacing the blocks 8 along the length of the box 2 and fixing them in the desired direction, as well as removing or installing the required number of blocks 8.

The distance between the ribs 9 and the sieve 3 is adjusted by raising or lowering the ribs 9. The raising or lowering of the ribs 9 is done by respectively installing or removing the gaskets 10, the gaskets 10 are installed between the block 8 and the supports 11, which are provided with the ribs 9 at the top parts.

The method is carried out with the operation of the device as follows.

When you turn on the vibration exciter 5 box 2 rumble makes spatial oscillations. After feeding the raw material to the loading platform 4, the material processing begins. The material being processed is vibrated from the loading platform 4 to the sieve 3 and then moves to the discharge side, while the layer of the material being processed is additionally affected by transverse vibrations in its upper part h (0.3 ... 0.6) H, where H is the height of the layer of material being processed on the sieve. This is an additional effect

ribs 9, provides high screening efficiency by increasing the speed of delivery of small particles to contact with the sieve by improving the loosening of the material being processed. When the processed material moves along the screen, fractions of the undersize grain size pass through the openings of the sieve 3 and enter the receiver of the undersize product. Permissive

the product from the discharge section of the sieve is transferred by 3 vibrations to the receiver of the nadwire product.

Claims (2)

1. A screening method for bulk materials, including the supply of material to a sieve-mounted sieve, the movement of material along the sieve with the release of the oversize and sublattice fractions, characterized in that increasing the efficiency of screening on the layer of material that is on the sieve is affected by transverse vibrations, while the height of the layer of material that is impacted by transverse vibrations, limit height equal to h (0,3-0,6) H, where H is the height of the layer of material on the sieve. 2. A device for screening bulk materials, including a sieve-mounted box vibration exciter associated with the duct and ribs mounted above the sieve, characterized in that, in order to increase screening efficiency, the ribs are mounted along the duct in a staggered order the ability to change the distance between themselves and the sieve, while the edges are angled to the surface of the sieve Ј nd, shnldos / and nwHu / dmadpor / Di / 0rtd3LUOhf ozoneod / shoodoo Klnagdpd epnei-doytson Z mib // OOHOZ.I S U in-lobernu / lo The direction of the additional / influence of the lyrech / oscillations of the g but the singing of the material 5 FIG. five FIG. 6