A self-balancing unilaterally driven oscillating screen with two-way damping device

Abstract

The invention discloses a self-balancing single-side driving rocking sieve with bidirectional damping devices. The self-balancing single-side driving rocking sieve comprises a base, a motor, a belt pulley with an eccentric balance weight, a belt pulley transmission mechanism, a rack, suspension rods, a transmission shaft which drives a sieve frame to move, a conjoined framework fixed on the rack, the sieve frame suspended on the rack in a hinging manner, the bidirectional damping devices mounted between the sieve frame and the rack, and polyurethane elastic sieve cloth connected between support frames of the conjoined framework. The self-balancing single-side driving rocking sieve with the bidirectional damping devices is characterized in that the bidirectional damping devices are mounted at the tail part of the rocking sieve, the rocking sieve is integrally in flexible connection with an underframe through rubber springs, and the belt pulley is provided with the eccentric balance weight. The self-balancing single-side driving rocking sieve can effectively balance the inertia force of the sieve frame when the rocking sieve works, takes a good buffering effect on vibration of the rack, and prevents a sieve box from torsional polarization, so that the working stability of the rocking sieve is improved; besides, the rack is endowed with spatial movement while the tension and relaxation movement of the sieve surface is realized, so that material conveying and sieving can be well promoted; and the self-balancing single-side driving rocking sieve is extensively practical.

Description

technical field [0001] The invention relates to a self-balancing unilaterally driven oscillating screen with a two-way damping device, which belongs to the field of material separation and is especially suitable for dry screening of wet fine-grained coal. Background technique [0002] In coal preparation plants and screening plants in the coal industry, screening operations are widely used in raw coal preparation and product processing, and play an important role in realizing the rational use of coal resources, protecting the environment and creating economic benefits for coal enterprises. effect. [0003] The dry deep screening of wet fine coal is an urgent problem to be solved in today's screening technology. Fine-grained coal with a particle size of less than 13mm, due to small particles, large specific surface area, and easy muddying when exposed to water, will adhere to cause hole plugging. The current application number is 200810195649.8 centralized drive type relaxa...

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Problems solved by technology

However, due to the sub-resonance principle of this type of vibrating relaxation screen, the amplitude depends on the quality of the screen body and the stiffness of the rubber block. The shear strength of the unit, the main vibrating body and the additional vibrating body are difficult to achieve a large relative amplitude

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