SU1220707A1 - Screen for moist materials - Google Patents

Description

 one

This invention relates to a technique for separating bulk materials by size and can be used in the mining and coal industries and the building materials industry.

The aim of the invention is to increase the durability of pea due to the protection of the strings against swelling when large pieces of soil hit them.

FIG. 1 shows the proposed screen, a general view of FIG. 2 shows section A-A in FIG. one; in fig. 3 - location of the grate and string.

The screen contains frame 1 ,. fixed 2 and turning 3 traverse. On both crossbars, there are rotary rollers-clamps 4 in a staggered order for setting the strings 5, constituting the screening surface rk 0 Between the strings, grate 6 fixedly fixed in cross-section

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sieves with a predetermined pitch a between them, with the horizontal shelves of the grates 6 rising H in magnitude above the strings 5 located with the process gap b.

The diameter of the strings is selected from the condition of the size of the material being screened out, its abrasiveness and strength, the strings.

The pitch a between the grate bars is determined from the condition of a piece of material that is permissible on the size of the material falling on the string surface and is equal to its diameter. The gap between the horizontal shelves of the grates of the stringed surface is half a step between them, i.e. On 2.

With this arrangement, the grate width sieve pieces of size

more and more are transported to the grates, and less along the string screening surface, which creates favorable conditions for increasing screening efficiency.

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us.3

Editor A.Lezhnina

Compiled by L. Kotelnikova

Tehred M. Khodanich Proofreader M. Sharoshi

Order 1511/7 Circulation 565 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (2)

1. SCREAM FOR WET. MATERIALS, including a screening surface made of strings with tensioning and clamping mechanisms, characterized in that, in order to increase the durability of the screen, it is equipped with grates located between the strings, having a T-shape in cross section, while the horizontal grate shelf is located with a gap over the strings. 2. The screen according to claim 1, characterized in that the gap is equal to half the pitch of the spike Fig! • 1 122Q7O7 sieve, with a given step and between them, and the horizontal shelves of the grid-irons 6 rise by the value of H over the strings 5 located with the technological Slot b. The diameter of the strings is selected from the condition of the size of the screened material, its abrasiveness and strength. strings.