High-efficiency paper pulp squeezer

The utility model relates to a high-efficiency paper pulp squeezing machine which is the equipment for paper making, pulping, and extracting black liquor. The utility model comprises a base; a main shaft is positioned in a sieve plate; both ends of the main shaft are provided with bearing seats to support; the bearing seats are connected with the main shaft of a speed reducer by a shaft coupling device. A thrust bearing seat is arranged on the main shaft between a side bearing seat and a water baffle plate; a pulp inlet is arranged at the upper part of the sieve plate and a pulp outlet is arranged at the lower part of the sieve plate which is supported by a sieve plate frame. A spiral blade is fixed on the main shaft in the sieve plate; the spiral distance of the blade is gradually reduced from the pulp inlet to the pulp outlet; sieve holes on the sieve plate are in strip and gap type. The utility model has the advantages of high black liquor extracting rate, leakproof finished pulp, and less water consumption. The utility model is used for pulping paper factory of various raw materials.