SU927343A1 - Screen - Google Patents

Description

(54) DINING

one

This invention relates to a technique for separating bulk materials by size and can be used in the mining, coal, building materials industry and other sectors of the national economy.

Known screen, including the case, the screening surface of the conical and pyramidal sieves installed in stages with the formation of a gap between them, the hopper, switchgear and discharge nozzles 1.

The disadvantage of this screen is that the screens used in this screen have a limited live section. Such sieves have low screening efficiency and limited productivity.

A screen for separating bulk materials is known, consisting of conical screens, placed one below the other. In this screen, conical sieves are installed at different angles of inclination of their forming 2.

The disadvantage of this screen is that the sieves used in it have a small living section and this reduces screening efficiency and productivity.

The aim of the invention is to increase the efficiency of screening by increasing the living cross section of the screening surface.

The goal is achieved by the fact that in the screen, including conical sifting surfaces, installed in ko, Q, zhuha under each other, upward at different angles of inclination and fixed each with its edges on the upper and lower generators, loading and unloading nozzles, the sifting surface is made the form of downward strings,

The 15 generators are interconnected by means of a pipe and ray-mounted spokes, which are attached at one end to the pipe and the other to the lower generatrix. The screening surface is provided with

Claims (2)

2Q device for tensioning the strings, which consists of a cone-shaped cap associated with the upper generatrix and screw. The upper one is made in the form of a comb disk, and the lower one is provided with rollers. The string screening surface is equipped with an intermediate circular comb and is made of a single thread, a sequential envelope comb e) (; c and rollers. The drawing shows the roar, general view, section. The roar consists of conic sieves 1, 2, 3, installed one below the other, casing 4, switchgear 5, discharge pipes b and 7. One conic sieve, for example, the top one is made of downwardly diverging strings 8, yavity between the bottom ring 9 and the top comb disk 10, the tension screw 11, the cone-shaped cap 12, the circular combs 13 mounted on a tube 14 connected by radially mounted spokes 15 to a lower large ring on which rollers 16 are mounted for fastening the strings along the outer diameter. The roar works as follows, the source material flows to a conical string sieve 3, where under the action of vibrated, excited the bulk of the material, which is necessary for further processing, is finally determined by sieves 2 and 1. This screen design allows open area prbseivayuschey surface prevent it from sticking and increase The screening efficiency and productivity. Claims 1. A screen comprising a conical sifting surface mounted in the housing one under another top upwards at different angles of inclination and fixed each with its edges on the top and bottom forming, loading and unloading nozzles, characterized in that in order to increase the efficiency of screening by increasing the living cross section, the surface is sifted to it, the latter is made in the form of strings diverging from the bottom, and the generators are interconnected by means of a pipe and ray-shaped spokes, one attached to the tube and the other end to the lower generator, the screening surface provided with a device for tensioning the strings, 2. The screen according to claim 1, characterized in that the upper generator is made in the form of a comb disk and the lower one is equipped with rollers. 3. Crash on PP. 1 and 2, characterized by a t & n that the screening surface is made of a single filament, a sequential envelope of a comb disc and rollers. 4. A screen according to claim 1, characterized in that the device for tensioning the strings consists of a cone-shaped cap associated with the upper generator and a screw. 5. Screen on PP. 1-3, characterized in that the string screening surface is provided with an intermediate circular comb. Sources of information taken into account in the examination. 1. USSR author's certificate number 701727, cl. In Of In 1/06, 1976. 2. USSR author's certificate number 453200 ,, class. In 07 1/06, 1973 (prototype).