The linear vibrator is set on the relaxation screen at the feeding end

Abstract

The invention provides a tension and relaxation screen with a straight-line oscillator arranged at the feeding end, belongs to the sub-mechanical field of oscillating screens and solves the problems that existing tension and relaxation screens are prone to having meshes blocked off and insufficient in processing capacity. Lower cross beams of a screen frame are composed of movable cross beams and fixed cross beams which are arranged in an alternate mode; the fixed cross beams are connected with screen frame side plates; the movable cross beams pass through the screen frame side plates through connecting blocks and are connected with locating beams at the outer sides of the side plates, so that movable cross beam sets are formed; the upper side and the lower side of each locating beam are connected with guiding tracks located on the screen frame side plates through rubber shearing springs; one side of each piece of elastic screen net is installed onto the corresponding fixed cross beam, and the other side of the corresponding piece of elastic screen net is installed on the corresponding movable cross beam. The double-shaft straight-line oscillator is installed at the feeding end of a screen box through a trapezoid oscillator mounting beam; screen surface sealing plates are arranged between the side plates of the screen box and the elastic screen net. By means of the tension and relaxation screen, the effect for screening high-viscosity materials is improved, no mesh is blocked off, and high production capacity screening is achieved. The screen can be applied to efficient material screening in such industries as coal, mine, building material, urban garbage and waste water preliminary purification.

Description

technical field [0001] The invention belongs to the field of vibrating screening machinery, and mainly relates to a box-type linear vibrator installed at the feeding end of a relaxation sieve. The linear vibration involves the screen mesh for relaxation movement, and the dry screening contains more mud, water or powder. The linear vibrator for fine-grained viscous and hard-to-screen materials is set on the relaxation screen at the feeding end. Background technique [0002] When the circular vibrating single-crank connecting rod relaxation screen screens materials, the elastic screen moves one by one, so that the materials will continuously touch the screen surface, bounce loose and fall through the screen under the action of the amplitude and elasticity of the screen. Complete the dry high-efficiency screening operation of difficult-to-screen materials with high viscosity. When the mixed material is less than 50mm, the content of 10-5mm is large, and the water accounts for ...

AI Technical Summary

Problems solved by technology

When the mixed material is less than 50mm, the content of 10-5mm is large, and the water accounts for about 10%, the material will easily adhere to the screen surface, which will significantly reduce the screening efficiency of the general vibrating screen, and even affect the normal production.

Due to the lack of vibrating force of the single-axis circular vibrator, the thickness of the material layer on the screen can only reach 40mm

Seriously insufficient production capacity has become a bottleneck restricting mineral processing enterprises from increasing production

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