SU36361A1 - Otsadochna lattice - Google Patents

Description

By the grates of a rhomboid cross section with an elongated upper face, placed in the proposed jigging grid with longitudinally widening slots in the pulsating stream of water, it is intended to separate the rock from the coal mined from the mines.

In the schematic drawing of FIG. 1 shows a side view of a grate in a lattice; FIG. 2 is a cross-section of the grate; and FIG. 3 - view of the lattice on top.

The proposed jigging grid consists of inclined, in the direction of the spillway thresholds of the grates a (Fig. 1-3), a rhomboid cross section with one upper elongated face. The grate has a thinning along its entire length, which is formed by increasing the angle of its blunt edges with the remaining constant shyrin of the NIKOV stalk and, to the top of the front end of the upper sharp elongated face, directed downwards towards the longitudinal narrowing; grate. The grate gratings are located one next to the other and form slots b (Fig. 2), gradually expanding due to the specified thinning of the grate. Length

, (Il2) ....

the gaps corresponding to the length of the grate are determined by the degree of contamination of the material being processed, while their width depends on the size of the grains of the latter. The grid bars are mounted at their ends on the protrusions of the walls of the enclosing rectangular frame inserted into a machine of one of the known types.

In operation, the proposed grating with its inclined faces of the grates forces the lamellar grains of ash impurities of the coal to go with an edge against the flow of water pulsing through the slots of the grate. Reversed in this way, with the side of their smallest cross-section down, the lamellar grains of impurities render water much less resistance than the rounded grains of coal, and are sprayed more rapidly than the latter due to their slightly larger specific gravity. The settling rocks close the slits of the lattice, forming under the coal under the coal, creeping down along the lattice and disappearing into the crevices of the last see through their expansion.

If, for example, you take anthracite with slate sifted on flat screens of a certain size and direct it to the Biepxr using the machine’s receiver

The scientific research institute of the jigging lattice, the anthracite and shale grains, turning and moving to the weir along the grates under the action of the water jet pulsing through the slots, will tend to separate due to the difference in specific gravity and shape of these two materials. The layer formed on the lattice in the lower part is rubbed out of shale grains, which gradually disappear in the lattice gaps, and the upper layer is formed of anthracite grains washed through the threshold of the overflow groove with a pulsating wave. At the same time, the smaller anthracite grains separated at the very beginning immediately move to the upper part of the layer, which excludes the possibility of falling into the expanded slits of the lattice.

Dividing the lattice along its width by projecting up the edges of the grate into a number of cells working independently of each other, contributes to the uniformity of the jigging and its adjustment, excluding the possibility of unilateral accumulation on the lattice of rocks.

Subject invention

A depositing grate with longitudinally increasing gaps with a pulsating stream of water, characterized in that it has grates of rhomboid cross section, in which one sharp upper edge is elongated.