Slurry tank stirrer

The present invention discloses a slurry tank stirrer, which comprises a stirring shaft and stirring blades connected with the stirring shaft, wherein one surface of the stirring blade is smooth, the other surface is provided with a scrapping plate along the stirring blade edge, the height of the scrapping plate is 1-2 cm, and the thickness of the scrapping plate is 0.8-1.2 cm. With the technical scheme of the present invention, the contact area of the blade and the mud slurry is increased, the working surface resistance of the blade is increased, the dynamic balancing of the three stirring blades is easy to adjust, and the motor power is not required to be increased, such that the stirring on the mud slurry is complete and uniform, the stirring effect is enhanced, and the production cost is saved.