It is composed of a rotating drum with high speed, a screw and a differential with the same speed as the rotating drum and a slightly higher or lower speed than the rotating drum, and is pushed through the blade on the screw pusher to the slag discharge port at the small end of the rotating drum, and the liquid phase is spilled through the overflow hole at the large end of the rotating drum. This is repeated in order to achieve the purpose of continuous separation. Mainly used in industry.

Mainly used in (1) industrial dehydration (2) starch washing, grading, dehydration (3) soybean, wheat protein dehydration (4) fish meal, fish dehydration (5) lees dehydration (6) juice purification and pulp fiber dehydration (7), vegetable oil separation and purification (8) coal tar separation and purification (9) kaolin, graphite classification and dehydration (10) dye, color Grading and dewatering of materials.