Summary
  This machine is composed of hopper, oscillation chamber, coupling and motor. The oscillation chamber is composed of eccentric wheel, rubber software, main shaft, bearing, etc. The adjustable eccentric weight is driven by the motor to reach the center line of the main shaft, which generates centrifugal force in the unbalanced state, changes the material strength and forms a track vortex in the screen. The amplitude of the weight adjuster can be adjusted according to different materials and screens. The whole machine has compact structure, small size, no dust, low noise, high quality, low energy consumption and convenient mobile maintenance.