Flocculation mixing device of sludge dewatering machine

The utility model relates to sludge treatment equipment. The utility model discloses a flocculation mixing device of a sludge dewatering machine. The device comprises a mixing tank, a stirring motor arranged on the mixing tank, a sludge inlet pipe arranged on one side of the mixing tank and a sludge outlet pipe arranged on the other side of the mixing tank, a medicine inlet pipe is further arranged on the side wall of the mixing tank, a stirring shaft is arranged on an output shaft of the stirring motor, a stirring sleeve is arranged on the stirring shaft, and stirring blades are arranged on the circumferential side wall of the stirring sleeve; the stirring sleeve is slidably connected to the stirring shaft along the axis of the stirring shaft, the stirring sleeve is fixed to the stirringshaft in the circumferential direction of the stirring shaft, and a driving structure for driving the stirring sleeve to reciprocate along the axis of the stirring shaft is arranged in the mixing tank. The sludge stirring dev