Stacked screw type sludge dewatering machine

The utility model relates to a stacked screw type sludge dewatering machine, relates to the technical field of sludge dewatering, and aims to solve the problem of non-uniform mixing of a flocculating agent and sludge, the stacked screw type sludge dewatering machine comprises a flocculation reaction device and a dewatering device, the flocculation reaction device comprises a flocculation box, a stirring mechanism and a liquid conveying mechanism for conveying a medicament, and a sludge inlet is formed in the flocculation box; the inside of the flocculation box is communicated with a sludge conveying pipe, the sludge conveying pipe is communicated with the dehydration device, the stirring mechanism comprises a stirring reaction shaft, a stirring reaction motor and a plurality of stirring blade groups, the stirring reaction motor is arranged at the top of the flocculation box, the stirring reaction shaft is vertically arranged in the flocculation box and is connected to the output end of the stirring reaction m