Vibrating screen is to use the vibrator excitation generated by the reciprocating screw type vibration and work.Stator rotating hammer on that plane whirl vibration sieve surface, while the rotating hammer make cone rotaryvibration sieve surface, the effect of the combined complex type rotary vibration sieve surface. The track vibration isa complex space curve. In the horizontal projection for a round of the curve, and in the vertical plane of projection isan oval. Adjust the upper and lower rotating hammer exciting force, can change the amplitude. And adjust the spacephase Angle of upper and lower weight, you can change the course of screen surface movement curve shape andchange the direction of movement of screen surface materials.