UA19908U - Elastic sieve of screen - Google Patents

Abstract

An elastic sieve of screen contains parallel tapes, which are connected by cross connections with formation of the openings between them. The sections of tapes in the openings between cross connections have protrusions, which are turned to the side of adjacent tape in the openings.

Description

Description of the invention

The useful model refers to the technique of separation of loose materials and can be used in 2 mining, metallurgy and other industries.

In the currently existing state of the art, there is a well-known analogue - an elastic screening sieve according to (Association of the USSR

Mo1024125, VO781/46, dated September 24, 1980. This sieve accommodates parallel strips with protrusions. These features of the analogue coincide with the essential features of the utility model. In addition, the elastic element of the analogue is made in the form of several tapes, which are connected to each other at the ends by a single persistent thickening. The drawback of the analogue consists in 70 low torsional longitudinal stiffness. As a result, pieces of screened material follow the vibrations of the screen box with a reduced amplitude. This reduces the efficiency of debiting.

The prototype does not have the disadvantages of an analogue - an elastic sieve sieve according to the book |"V.P. Nadutyy, V.L. Zolotareva,

Polymer sieving surfaces of vibrogrohotov, M., Nedra, 1993", p.120, fig. 116). This sieve accommodates parallel tapes, which are connected by jumpers with the formation of holes between them. These features of the prototype are 72 common with the essential features of a useful model .

The disadvantage of the sieve, which is a prototype, is that when screening materials that are prone to sticking, it is possible to clog the holes with the material. This reduces the efficiency of debiting.

The basis of the useful model is the task of increasing the screening efficiency when using the useful model.

The problem is solved by the fact that in the elastic sieve sieve, which contains parallel strips that are connected by jumpers with the formation of holes between them, in contrast to the prototype, the sections of the strips in the holes between the jumpers are made with protrusions that face the side of the neighboring strip in the holes .

The protrusions can be staggered relative to the jumpers.

Between a pair of jumper holes, sections of tapes can be sewn with several protrusions.

Several protrusions of the hole can be made on the section of one tape. what

Several protrusions of the hole can be made on the sections of two tapes in alternating order.

The causal relationship between the set of features of a useful model and the technical result that can be achieved is as follows.

In contrast to the prototype, the fact that the sections of the tapes in the holes between the jumpers are made with protrusions that are turned towards the neighboring tape in the holes, ensures, while maintaining the overall rigidity of the elastic sieve "3 sieve, to reduce the clogging of the holes with sieved material due to the oscillation of the protrusions inside the holes. This increases the efficiency of debiting. at

Fig. 1 shows the general view of one of the variants of the elastic sieve screen from the sieving surface, Fig. 2 shows the section of the second variant of the sieve from the side of the sieving surface, and Fig. C is also for the third version of the sieve. --

The elastic screen of the sieve accommodates parallel strips 1, which are connected by jumpers 2 with the formation of openings Z between them. Sections of the tapes in the holes between the jumpers are made with protrusions 4, which face the side of the adjacent tape in the holes. The protrusions 4 can be made in a staggered manner relative to the jumpers 2 (see Fig. 1). Between a pair of jumpers, 2 holes can be made from the section of tapes 1 with several protrusions 4 (see fig. 2, 3).

Several protrusions 4 of the hole C can be made on the section of one tape 1 (see Fig. 2). Several protrusions 4 C of the hole C can be made on a section of one tape 1 (see Fig. 2). Several protrusions 4 of hole C can

And" be performed on the sections of two tapes 1 in alternating order (see Fig. 3). To install the sieve on the screen box, the sieve can be provided with grips of known designs or holes. Also, the sieve can be installed on the screen box with the help of overhead clamps. Sieve elements are made of rubber, polyurethane, or other elastic material. - In the screening process, the elastic screening screen receives vibrations from the screening box. The small fraction (se) of the screened material is sifted into the under-sieve space through the holes 3, and the large fraction is transported to the end of the screen, where it is shipped. At the same time, under the action of pieces of rattling material, the protrusions 4 receive oscillations. Oscillation of protrusions 4 in holes Z between sections of tapes 1 and jumpers 2 cleans holes Z from av! 20 sticking of screened material in holes 3. Keeping the holes З in a clean state contributes to a more complete screening of the fine fraction of screened material into the under-sieve space. This increases the efficiency of collection.

Claims (1)

The formula of the invention with 1. An elastic screen sieve containing parallel tapes that are connected by jumpers with the formation of holes between them, which differs in that the sections of the tapes in the holes between the jumpers have protrusions that are turned towards the adjacent tape in the holes. 6о 2. Elastic sieve according to claim 1, which differs in that the protrusions are made in a staggered manner relative to the jumpers. C. Elastic sieve according to claim 1, which is characterized by the fact that between the pair of jumper holes, the sections of the tapes have several protrusions. 4. Elastic sieve according to claim 3, which is characterized by the fact that several protrusions of the hole are made on the section of one tape. bo 5. Elastic sieve according to item C, which differs in that several protrusions of the hole are made in the areas of two