Distillers' grains solid matter separating device

The utility model provides a vinasse solid matter separating device which comprises a machine frame, a charging barrel, two extrusion pieces, an upper blocking piece and a lower blocking piece, the two ends of the charging barrel are open, a feeding port and a water inlet are formed in the top of the charging barrel, a discharging port is formed in the bottom of the charging barrel, and the two extrusion pieces are arranged at the two ends of the charging barrel respectively. Each extrusion part comprises an extrusion plate and a first linear driving mechanism connected with the extrusion plate, the extrusion plates are embedded into the end of the charging barrel and can move in the axial direction of the charging barrel, the upper plugging part comprises a cover plate and a second linear driving mechanism connected with the cover plate, and the lower plugging part comprises a storage tank, a filter screen and a third linear driving mechanism. The filter screen is arranged at an upper groove opening of the s