Technical parameters:Model: SHJ-20Screw diameter: 21.7mm,crew speed (rpm): 600,L/D: 32-60,Screw torque: 30 (N.M),Motor power: 4KW,Output: 0.5-15 kg/hApplication scope: This series can be used in universitys' experiments The machine screw be designed by using toy bricks principle, which optimize and enables the machine to achieve perfect state on the basis of different material element; craft request; style of screw element; barrel; slender ratio; feeding apparatus; screen changer; cutting system; electric control module. The machine will realize multifunction, meanwhile can also satisfy multipurpose of give attention to two or more things and special-purpose. Our machinery has the characteristic of high production, low energy consumption.