SU1284602A1 - Screen - Google Patents

Abstract

This invention relates to a technique for the separation of bulk materials by size and may be. Used in various industries. The purpose of the invention is to improve the quality of the screening process by eliminating the clogging of the lateral portions of the screening surface (PP) by the boundary grains of the material and sticking in a crush by their fractions. For this, the elastic PP screen is made in the form of the top 4 and bottom 5 sieves. It is fixed on both sides in the side fastening elements made in the form of the upper 6 and lower 7 paired levers (P). The inner ends of P 6 and 7 are pivotally connected, while the outer ends are connected by means of compression springs. The outer ends of P 6 and 7 are attached respectively to their side portions of the sieve 4 and 5. Under the influence of the vibration exciter, reciprocating mixing of the hinge joint of the paired P 6 and 7 is performed, causing both longitudinal and transverse oscillatory changes of sieves 4 and 5. The source material, g, fed through the loading device 2, is actively classified not only in the middle, but also at the sides of the screen. The combination of longitudinal and transverse vibrations of PP sieves improves the process of material separation. 2 Il. (L

Description

to

00 4 ;:

O5

about

1HE

Fy

one

1284602

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

The purpose of the invention is to improve the quality of the screening process by eliminating clogging of the lateral portions of the projected surface by the boundary grains of the material and sticking into the peel by their fractions.

FIG. 1 shows the proposed screen, side view; in fig. 2 - the same plan.

The screen contains a frame 1 with loading 2 and unloading 3 devices, an elastic screening surface made in the form of the top 4 and bottom 5 sieves fixed on both sides in the side fastening elements made in the form of the top 6 and bottom 7 paired levers, the inner ends of which Fiddling movements of elastic sieves 4 and 5 are connected. The raw material supplied through the loading device 2 is actively classified not only in the middle, but also at the sides of the screen. The combination of longitudinal and transverse vibrations of the elastic screening surfaces of sieves 4 and 5 improves the process of dividing the material into fractions by eliminating clogging of the sieve holes with boundary grains and sticking into - 10 fractions. The magnitude of the amplitudes and transverse vibrations of the sieves 4 and 5 can be adjusted by changing the stiffness of the compression springs 8.

15

Claims (1)

Invention Formula Screen, including frame, elastic screening surface, fixed on both sides in the side elements of the fastening. ".", "" "G-laziness, vibration exciter, attached Nirno, and external - through the springs 8 20 to the side fastening elements, boot compression. To the outer ends of the upper 6 and and the discharge devices, the lower 7 arms are attached by their lateral sections, respectively, the upper and lower elastic sieves 4 and 5. Paired This is due to the fact that, in order to improve the quality of the screening process by eliminating blocking of the side sections of the screen 6 and 7, placed on both sides of the 4 U surfaces by the boundary grains of ma- and 5 are attached to the exciter 9, the material and sticks in crushing fractions, the elastic screening surface is made in the form of upper and lower sieves, and the side fastening elements are in the form of mounted outside the screening surfaces and reciprocating horizontal movements of sieves 4 and 5. the upper and lower paired levers, the intra-screen operates as follows, the sharp ends of which are connected pivotally. Under the influence of vibroexplosive 9, the hinged articulation of the paired levers 6 and 7 is reciprocated, causing the longitudinal and transverse outer treads to be simultaneously through compression springs, with the upper and lower sieves attached by their side sections to the outer ends of the upper and lower levers respectively. The body movements of the elastic screens 4 and 5. The raw material fed through the loading device 2 is actively classified not only in the middle, but also at the sides of the screen. The combination of longitudinal and transverse vibrations of the elastic screening surfaces of sieves 4 and 5 improves the process of dividing the material into fractions by eliminating clogging of the sieve holes with the boundary grains and sticking with cutting fractions. The magnitude of the amplitudes and transverse vibrations of the sieves 4 and 5 can be adjusted by changing the stiffness of the compression springs 8. 15 Invention Formula upper and lower twin arms, the inner ends of which are connected pivotally. The ends of which are connected pivotally. and the outer ones, by means of compression springs, with the upper and lower sieves being attached in their side portions to the outer ends of the upper and lower arms, respectively.