The screw extruding dewaterer is widely used for dewatering high moistu  re residues such as brewers grain, fruit residues and gruff before drying process, which can, by eliminating around 20％moisture, relieve the burden of the dryer, largely improve the production, and reduce the energy consumption greatly, it is the necessary processing equipment of high moisture material before drying. And the material after dewatering process can be directly fed into the dryer, and the energy consumption of drying is largely reduced.

   After the adjustable speed motor comes to normal operation, feed the material evenly via the feeding box, then the fed material moves along the axial direction under pushing of the screw fans, during this process mechanical dewatering occurred for the huge external press force formed with action of the variable pitch of screws and adjustable apron plate. After dehydration, the water is drained out through water outlet via screen mesh, while the material dehydrated is discharged through the discharge box.