YCJ type screw press machine is mainly composed of a drive device, a screw shaft, a conveying pipe, a discharge pipe, a wear-resistant lining board, a drainage groove, and so on. The waste is squeezed into the discharge pipe after entering into the squeezing pipe, and the waste water is separated into the drain tank to achieve the purpose of separation. Wear resistant lining board is made of nylon material, which is not only wear resistant, but also resistant to corrosion