Product name : vibrating rectangular screening machine model number : zs series place of origin : china main application : designed and modified by importing the advanced foreign technology and in combination with gmp standard, this machine is widely used for grading and screening of industrial raw materials in such trades as pharmaceutical, chemical, foodstuff, metallurgy and electronics, etc. Working principle : 1 ) this machine is comprised of screen box, vibration source and damper, vibrating frame and screen box, connected with 4-12 group soft rubber dampers fixed up and down 2 ) the centrifugal force is generated there 3 ) the floating amplitude is controlled by the damper 4 ) by which, material realizes a process of throw and lamination filtration downward, and therefore reaching the optimized grading and screening effect