Method for improving screening efficiency of vibrating screen

Abstract

The invention belongs to the technical field of screening of vibrating screens, and particularly relates to a method for improving the screening efficiency of a vibrating screen. The vibrating screencomprises a screen stencil, a belt conveyor and a speed reducer connected with a motor. The method comprises the following steps: selecting the screen stencil, adjusting the angle of inclination of the screen stencil, adjusting the ore feeding capacity, adjusting the speed reducer to change the vibration speed of the vibrating screen, and observing the thickness of a to-be-screened material layerof the vibrating screen, thereby determining the feeding speed and the ore feeding capacity of the belt conveyor. According to the method, the vibrating screening efficiency is improved by selecting the proper screen stencil to reduce blocking of screen meshes; the transmission ratio of the speed reducer is adjusted at the proper time, so that the circulating load of the vibrating screen is reduced, and the vibrating screening efficiency is improved; the circulating load of the vibrating screen is reduced by adjusting the screening angle of the vibrating screen; and the feeding speed and the ore feeding capacity of the belt conveyor are adjusted by adjusting the to-be-screened material layer to improve the screening efficiency of the vibrating screen.

Description

Technical field [0001] The invention belongs to the technical field of vibrating screen screening, and specifically is a method for improving the screening efficiency of a vibrating screen. Background technique [0002] Vibrating screen is a common equipment for ore size screening after crushing in iron ore, and it is the equipment to check the particle size of ore finally entering the grinding process. [0003] The existing vibrating screen is a double-layer circular vibrating screen or a double-layer linear vibrating screen, the model is 2YA1800×4200 or LF1800×4200D, the production capacity is 300-600 tons / hour, the width of the vibrating screen is 1800mm, and the length of the vibrating screen is 4200mm. The screen length is 3600mm or 4200mm. The required installation angle is: β=20-30 degrees, the actual installation angle selected through the test is 24.6 degrees, and the upper installation height of the screen is 1770mm. However, the vibrating screen often has low screening...

AI Technical Summary

Problems solved by technology

However, the vibrating screen often has low screening efficiency, clogged screen holes, redundant cement beam structure under the screen, poor ore discharge, large dust, uneven material thickness on the screen, and high center of gravity of the vibrating screen during production and maintenance. And the load is uneven, causing the original crushing vibrating screen to have large vibration load, uneven force, screening efficiency and easy damage of the vibrating screen.

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