High frequency vibrating screen

Abstract

The invention discloses a high frequency vibrating screen which comprises a screen box, a screen plate, a box type vibration exciter and a driving system. The screen box comprises two side plates, a plurality of transverse beams and a driving beam, the two side plates are installed on a support through springs, the lower edges of the two side plates are connected through the multiple parallel transverse beams, the upper portions of the middles of the two side plates are connected through the driving beam, the box type vibration exciter is installed on the driving beam and is connected with thedriving system, the screen plate is fixed to the upper portions of the transverse beams and is formed by butt joint of a slope screen plate with a positive inclined angle and a step-shaped screen plate with a negative inclined angle, the slope screen plate is located on the back portion of the step-shaped screen plate, and a feeding baffle is arranged at the back end of the slope screen plate. According to the high frequency vibrating screen, the staged type screen plate formed by the slope screen plate and the step-shaped screen plate is adopted, the forced synchronization type box type vibration exciter is used as a vibration exciting source, coal slime scattering and layering and further dewatering can be promoted, material stacking and water running can be effectively prevented, the dewatering effect of the slime water is improved, the fault rate is low, and the screen machine running reliability is greatly improved.

Description

technical field [0001] The invention relates to a high-frequency vibrating screen suitable for the coal washing industry, which can improve the dehydration effect of coal slime water, and belongs to the technical field of screening equipment. Background technique [0002] Coal slime water treatment and coal slime recovery have always been a relatively weak link in my country's coal preparation process. In recent years, with the improvement of coal mining mechanization, the amount of pulverized coal contained in raw coal is increasing, and a certain amount of secondary slime is also produced in the process of coal washing, resulting in the The amount of water in the slime increases, which puts forward higher requirements for the recovery of the slime. The reasonable recovery of coal slime not only brings considerable economic benefits to coal preparation enterprises, but also realizes the purification and recycling of coal washing water in the coal preparation system, avoids...

AI Technical Summary

Problems solved by technology

[0008] In summary, the main problems existing in the existing high-frequency vibrating screens are: (1) The structure of the sieve plate restricts the dehydration effect of the high-frequency vibrating screen, resulting in a small processing capacity of the screen machine; (2) The vibrating motor or self-synchronized Vibrators limit the serialization, standardization and large-scale development of high-frequency vibrating screens; (3) The structural reliability of the screen machine is poor, and it is prone to failures such as side plate cracking and beam breakage

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