SU825182A1 - Trommel - Google Patents

Description

one

The invention relates to the enrichment of minerals, namely, the separation by size of crushed materials, and the use of it in the black, colored, coal building and other sectors of the national economy of the country.

A device for dividing the material by size is known, in which a coarse mesh 1 is placed above the screening surface.

The known butara, comprising a housing, on the surface of which a screening surface is placed, and a cheek, housed in an housing L. The disadvantage of the known devices is the low efficiency of the separation process.

The purpose of the invention is to increase the efficiency of the separation process and simplify maintenance.

The goal is to achieve a heme that the body is made. In the form of a truncated pyramid, and the screening

The surface is made in the form of removable cards, consisting of karsas and fixed on them with a preliminary tension of elastic gear elements, and a large mesh grid parallel to the plane of elastic elements with a gap equal to no more than half the height of elastic elements.

In addition, the elastic elements are made of rubber.

1 shows the proposed butara, a general view, in FIG. 2 - construction of the face of a butara with removable cards of the screening surface .; on fig.Z - a map, a cross-section; figure 4 is the same, top view; Fig. 5 is a diagram of the mutual displacement of the elastic elements of the card during operation. .

Butara is, for example, a hexagonal construction in the form of a truncated pyramid, made of angle steel. Faces of one trap with a hole with holes for fastening maps of the screening surface. Inside the butare a screw 2 is installed. A flange 3 is provided for fastening the butara to the mill. To each face of the butara (fig.2} bolted joints are attached removable cards 4 (for example, three cards). The map (fig.3 and 4) is it is a rigid frame 5, onto which elastic toothed rubber elements 6 are fixed with pre-tensioning. mm).

When the butare is working (rotation around its axis), the material from the mill falls on the screening surface of the butara. Due to the non-uniformity of the specific load falling on each element of the screening surface, the elastic elements in the process of work are mutually displaced relative to each other (see Fig. 5). As a result of this displacement, and taking into account the impact of the material falling on the elements, the particles stuck in the cells are knocked out, which causes the sieves to be self-cleaning. The displacement of one element relative to another to the outer side of the face (map) is limited by a coarsely rigid mesh, which is installed with a gap rf (with a gap d - U - the element pops up, which negatively affects the separation efficiency). When the butare rotates, when the elastic elements are released from the material (at a position above the horizontal diameter of the butare), the displaced elements return to their original position, forming a smooth plane of the sifting surface, the process is repeated.

Claims (2)

1. German Patent No. 82366, cl. 50 d 6/10, 1895. 2. USSR author's certificate number 478627, cl. B 07 B 1/22, 1973 (prototype). (Pu2.1 9ui.2 A-A H 1 yydtgg / .2 S 6 s I I t., 1