Novel screw press for preparing grease from protein oil

The utility model relates to a novel screw press for preparing grease from protein oil, which solves the technical problem of low oil yield of a screw press in the prior art. The oil press comprises a rack, a pressing screw, an oil hopper, an oil receiving disc, a feeding hopper, a cake discharging ring and a conical extrusion block. A barrel is arranged on the machine frame, the cross section of the inner wall of the barrel is in a regular polygon shape, and an oil outlet is formed in the side wall of the barrel. The pressing screw is rotationally assembled in an inner cavity of the barrel, and a pressing cavity is formed between the outer wall of the pressing screw and the inner wall of the barrel; the oil hopper is arranged at the position of an oil outlet in the barrel; the oil receiving disc is located below the oil hopper, the feeding hopper is communicated with the squeezing cavity, and a feeding structure is arranged in the feeding hopper; the left end of the cake outlet ring is arranged at the right