SU1577880A1 - Sieve - Google Patents

Abstract

The invention relates to equipment for the separation of bulk materials by size and can be used in the coal and other industries. The purpose of the invention is to increase the efficiency of screening. The sieve consists of sifting sections formed by transverse slats 1 with longitudinal elastic grates (CC) 2 rigidly fixed on the latter, which are twisted along its axis in the sieving section in one direction and in the opposite part in the opposite direction. The longitudinal CC 2s are fixed on transverse rails 1 overlapped with each other with the displacement of their side faces, and between them a gap A. is formed. The material is fed to the sieve and sieved in adjacent areas. The opposite direction to the movement of cargo traffic in the spans between the laths 1 sets the sides of the twisted CC 2. It intensifies the mixing of the material grains with each other. 5 il.

Description

FIG. 3

The invention relates to equipment for the separation of bulk materials by size and can be used in coal ore, construction and other branches of the national economy.

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

Figure 1 schematically depicts

 the proposed sieve, vdv in the plan; FIG. 2 is the same, side view; FIG. 3, section A-A in FIG. 1 (without compensators); FIG. 4 is a section B-B in FIG. 1, lj in FIG. 5 is a section A-A in

figure 1 (with compensators).

The sieve consists of a screening surface made of transverse rails 1 forming the screening areas on which elastic grate 2 is fixed. The grate is attached to the transverse rails, for example, with nails 3 The transverse rails are equipped with overlap with offset side faces magnitude 1 (fig.3) 0 The maximum gap Q is formed in section bb in fig „4"; in order to obtain a predetermined size of the gap i between the columns, there are compensators 4 on the transverse rails (fig 5) 0

Order of assembling sitav Initially, the ends of the tape were fastened to the outer rails 1 with nails 39 and then the grate was twisted over the following transverse rails in any sequence and the nail was attached to them0 Another grate was shifted by 1 (FIG 3) and again crepe t nails I T „D0

The sieve works as follows. When advancing a rattling material along the sieve, the grains fall on the spiral plane first of one grate, then of the next grate and pass over the cross rails. The opposite direction to the movement of cargo traffic in the spans between the support rails. The lateral sides of the twisted grates are placed on the sides, which intensifies the mixing of the material grains

Claims (1)

Invention Formula  Sieve, including screening sites, formed by transverse slats with 1 longitudinal elastic band grate rigidly attached to them, which are twisted along its axis at the screening site in one direction, and in the opposite area, in order to increase screening efficiency , longitudinal grate attached to the transverse slats overlapped with each other with the displacement of their side faces. FIG. 2 FIG. five