Stainless steel push mixers are commonly used in low viscosity fluids, as shown in the figure. The standard propeller mixer has three bladed blades with a pitch equal to the diameter of the propeller. When stirring, the fluid is sucked in from above the blade and discharged in a cylindrical spiral shape from below. The fluid reaches the bottom of the container and then returns along the wall to above the blade, forming an axial flow. The turbulence level of the fluid is not high when stirred by a propeller mixer, but the circulation volume is large. When the container is equipped with baffles, the mixing shaft is installed eccentrically, or the mixer is tilted, it can prevent the formation of vortex disasters. The diameter of the propeller agitator is relatively small, and the ratio of the blade diameter d to the inner diameter D of the container is generally 0.1-0.3; The blade tip velocity is 7-10m/s, up to 15m/s.
The push type agitator has a simple structure and is manufactured by the manufacturer. It is suitable for situations with low viscosity and high flow rate. By using a small stirring power and high-speed rotating blades, a better stirring effect can be achieved. Mainly used for liquid-liquid mixing, temperature uniformity, and preventing sedimentation of sludge in low concentration solid-liquid systems. The push type agitator has good circulation performance and little shear effect, belonging to the circulation type agitator.