It is composed of 2~3 pusher propeller blades, the working speed is high, and the circumferential speed of the outer edge of the blade is generally 5~15m/s. The propeller agitator mainly causes axial liquid flow, produces a large circulating volume, and is suitable for stirring low viscosity (<2Pa·s) liquids, emulsions and suspensions with solid particle content of less than 10%. The shaft of the agitator can also be inserted horizontally or diagonally into the tank, where the circulation loop of the liquid flow is asymmetrical, which increases turbulence and prevents the liquid level from sinking.