SU1187892A1 - Sieve for screen - Google Patents

Abstract

1. A GROUNDING SITE composed of a set of longitudinal sections, including elastic rotary grate with double-sided combs, the tooth of the previous comb placed between the subsequent teeth, characterized in that, in order to increase the efficiency of sifting wet materials by providing antiphase oscillations of the adjacent grate, the tooth combs are asymmetric, and the center of mass of the comb is offset from the vertical plane of symmetry

Description

2. The sieve according to claim 1, is distinguished.

what short

comb tooth with high ratio 4/5 3. Sieve on PP. 1 and 2, that the short and long teeth of each comb are located between the corresponding teeth of adjacent combs.

This invention relates to a screening technique for nonmetallic bulk materials.

The purpose of the invention is to increase the efficiency of sieving wet materials by providing antiphase vibrations of adjacent grates,

FIG. 1 shows a schematic section of the sieve; FIG. 2 shows a plan, FIG. 2, section A-A. FIG. 1, in FIG. 3 a section B — B in FIG. 1, in FIG. 4 callout from section AA.

The screen is made up of longitudinal sections, which consist of transverse grates 1 having short teeth on one side 2 combs C) 5 and on the other hand long teeth 3 combs long, Section molded from an elastic material, for example polyurethane. Grate bars in a section are arranged in such a wayJ that in one gap between them, equal to A, there are long teeth of 3 combs; The gaps between the teeth of the comb form sifting zigzag cells. The size of the gap is determined depending on the technological requirements of the screening. Combs of grid-irons are made in the form of non-isos-shaped trapeziums (FIG. 4).

Sieve for rumble works as follows.

The difference between the masses of teeth 2 and 3 of the comb, as well as the different removal of the center of the combs of the combs from the vertical plane of symmetry of the grate, causes the difference in inertia forces of the teeth of the combs with a variable sign, which is the source of forced torsional vibrations of the grate with the combs near the longitudinal axis of the grate. The forced torsional vibrations of the grates with combs at an angle of ± Y ensure the relative movement of the teeth of the comb of one grate relative to the teeth of the comb of the adjacent (adjacent) grid bar.

1187892 6-6

(rig. 3

Claims (3)

1. Sieve for screening, composed of a set of longitudinal sections, including elastic swivel grates with double-sided combs, the teeth of the previous comb placed between the teeth of the next, characterized in that, in order to increase the sieving efficiency of wet materials by providing out-of-phase vibrations of adjacent grates, the teeth the combs are made asymmetric, and the center of mass of the combs is offset relative to the vertical plane of symmetry of FIG. 2. A sieve according to π. 1, distinctive and long full with - 3/4. the fact that the short teeth of the comb with a ratio of 4/5 3. Sieve according to paragraphs. 1 and 2, characterized in that the short and long teeth of each comb are located between the corresponding teeth of adjacent combs.