SU984502A1 - Vibration sieve elastic string-band - Google Patents

Description

{54) ELASTIC VIBRATION SITE STRIP TAPE

one

The invention relates to devices for separating bulk materials and can be used in the mining industry.

Known qHTo for screening, containing parallel-installed elastic elements with periodic protrusions fixed in support 1.

The disadvantage of such a sieve is low screening efficiency due to insufficient mobility of loose elements.

The closest to the proposed technical essence and the achieved result is an elastic vibrating sieve-string tape, including periodic trapezoidal projections fixed in support 2.

The disadvantage of this tape-string is the low cleaning of the sieve-phey-surfaces due to ots / twist torsional vibrations.

The purpose of the invention is to intensify screening by self-cleaning during operation.

This goal is achieved by the fact that, in an elastic vibration sieve belt, including periodic protrusions of trapezoidal shape fixed in a support, the projections are made in the form of two differently sized prismatic elements at an angle to the plane of the belt; non-working side.

The drawing shows a flexible tape-string vibrating sieve.

Elastic vibrating sieve string tape w-stretches elastic band 1,

10 fastener assemblies 2 secured in support 3, the tape has projections. Periodic intervals of elastic tape-string 1 are trapezoidal in the form of two matched prismatic elements 4 and 5 at an angle to the plane.

15

The base of the protuberance from the working side is larger than the base of the protuberance from the non-working side, i.e.

Claims (2)

Due to the location of the working center of the protrusion from the side of the screening surface, the center of gravity of the cross section of the tape string is biased relative to the axis 00, which passes through the center of gravity of the cross sections of the attachment points 2, vertically by the value of r and to the side of the projections by the value of e. string vibrating sieve works as follows. Under the action of a force applied to the support 3, the oscillations of the tape occur periodically. Due to the additional change in the center of gravity of the cross section of the tape 1 and fastener units 2 by the magnitude of d and e, intense swiveling vibrations of the string-strings I occur, contributing to improved self-cleaning of the sieve due to an increase in torque, the vibrations of the string-strings I increase. Thus, the use of the proposed device increases the displacement of the center of gravity of the fixing unit vertically and toward the protrusion, and thus allows to intensify the screening process and improve the self-cleaning of the sieve, which leads to an increase in the efficiency of the screening process. The invention is an elastic vibrating screen-string, including periodic protrusions of trapezoidal shape, fixed in a support, characterized in that, in order to intensify the sieving due to self-cleaning during operation, the protrusions are made in the form of two differently sized prismatic elements, while the base of the protrusion from the working side more than the base of the protrusion from the non-working side Sources of information taken into account in the examination 1. USSR author's certificate number 839601, cl. B 07 B 1/04, 1981. 2. USSR author's certificate number 816569, cl. B 07 B 1/12, 1979.