Electromagnetic swing type vibrating screen

Abstract

The invention discloses an electromagnetic swing type vibrating screen, and relates to the field of vibrating screens. The electromagnetic swing type vibrating screen comprises a vibrating screen box body and the like, wherein the vibrating screen box body is fixedly arranged in the vibrating screen box body, a fixed electromagnetic seat body is arranged below each of the four corners of the vibrating screen box body, a movable support is fixed on each fixed electromagnetic seat body, the movable supports are rotationally connected with the bottoms of fixed supports through bearing rotating bodies, and the fixed supports are fixed on the vibrating screen box body; and a front electromagnetic block and a rear electromagnetic block are fixed on the two sides of each fixed electromagnetic seat body, the front electromagnetic blocks and the rear electromagnetic blocks are just located right below the two sides of the fixed supports respectively, the front electromagnetic blocks and the rear electromagnetic blocks are electrically connected with an external control system and are used for controlling the power-on and power-off of the front electromagnetic blocks and the rear electromagnetic blocks, so that the fixed supports swing left and right under the attraction of the front electromagnetic blocks and the rear electromagnetic blocks, the vibrating screen box body is driven to do reciprocating motion, and materials are repeatedly thrown and screened. The electromagnetic swing type vibrating screen has the advantages of being high in automation control degree, stable in operation, high in efficiency and low in noise.

Description

technical field [0001] The invention relates to the field of vibrating screens, in particular to an electromagnetic swinging vibrating screen. Background technique [0002] The traditional vibrating screen uses the motor to drive the vibrator to generate the excitation force. Under the action of the rigid spring, resonance is generated to realize the conveying, screening, compacting, forming and tamping of soil and gravel for materials or objects. At present, In the vibration feeding (screening) equipment used in my country's coal, metallurgical mines and other industries, one is the vibration motor (electric vibration exciter or vibration source three-phase asynchronous motor), and the other is an ordinary motor. A vibrator that drives an eccentric mass. These two forms of excitation force are electric transmission power to drive the exciter, but it is difficult to adjust the excitation force, the energy conversion efficiency is low, and the noise is too large, causing huge ...

AI Technical Summary

Problems solved by technology

Patent 1 can only be arranged on one side of the exciter without a motor, but the exciter at the motor end cannot be arranged, and the amplitude cannot be adjusted, and the maximum low-torque start cannot be achieved; Patent 2 cannot achieve low-torque start , and the online amplitude modulation capability is single, and stepless amplitude modulation is not possible

[0004] In addition, the vibration exciter requires high processing precision and is easy to be damaged. The bearing is easily damaged during high-load operation, and the frequency of replacement is high, which is difficult and the operating cost is relatively high.

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