SU1713678A2 - Screen - Google Patents

Abstract

The invention relates to mining machinery and can be used in mining and other industrial sectors. The screen contains a box (K) 1 s. sieve located in it. The two-part 2 sieve and из •. Part 2 is freely supported on K 1, and the / part L is rigidly connected to K 1. The length of part 2 of the sieve is equal to L, j =

Description

The invention relates to a device for the separation of materials by size, can be used in mining and other industries. And is an improvement on the invention of auth. No. 1119740.

The purpose of the invention is to increase the efficiency of screening.

The drawing shows a rumbling view.

The screen consists of a box 1, a sieve, consisting of two parts, the first part 2 in the direction of movement of the material is freely supported on the box 1 by means of supporting elements 3 (that is, part 2 does not have a rigid ”connection with the box 1) mounted on the box and part 4, rigidly fixed to the box, and pathogen 5 oscillations. Box 1 rests on the frame 6 in the discharge part through shock absorbers - coil springs 7, and in the loading part through the struts 8 with hinges 9 and 10. The transverse axis of the upper hinges 9 coincides with the position of the center of impact of the box 1. Moreover, the exciter ^ 5, the vibrations are located on the central m axis of inertia of the duct 1 in the center of the impact, and the axis of the struts 8 are perpendicular to the central axis of inertia of the duct and are located from the pathogen of vibration at a distance determined by the formula!

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The roar works as follows. 'e

When the vibration exciter 5 * is turned on, when the source material is fed to the sieve, the process of processing the material begins. The processed material by vibrations moves to the discharge side, while the fractions of the under-grain size pass through the openings of the sieve 3 and fall into the receiver of the under-grain product. The free support of the sieve part 2 on the supporting elements 3, mounted on the box 1 in its loading part, provides the generation of non-harmonic shock-pulse oscillations, while the plugging of the holes is negligible. Next, the processed material, vibrations moving towards the discharge, falls on part 4 of the sieve, rigidly fixed to the box 1, while fractions of under-grain size pass through the sieve openings and fall into the receiver of the sieve product. Oversize product from the unloading section of the sieve vibrates moves to the receiver of the sieve product. On the part 4 of the sieve, due to the large values of the amplitudes of the vertical vibrations increasing in the direction of unloading, self-cleaning of the holes occurs.

Claims (1)

Claim - moment of inertia of the box relative to the rack; - mass of the box; - the distance from the rack to the center of gravity of the box; - coefficient taking into account the mass of material moved along the sieve (K = 0.954.1). · The length of part 2 of the sieve is equal to! · <= (1 / 4-1 / 3) 1., Where L is the total length of the sieve. where 1 _d tn g Rumble on avt.sv. No. 1119740, characterized in that, in order to increase the efficiency of screening 40, the sieve is made of two parts, while the first part of the sieve in the direction of movement of the material is made equal to C = (1 / 4-1 / 3) L, where L - the length of the sieve, and installed by 45 support elements without a rigid connection with the box, and the second part of the sieve is rigidly connected with the box.