The agitator is a stirrer with two or three propellers. The agitator has a high rotation speed when stirring. It can force the material to move in the axial direction, so that the material can be fully circulated and mixed. The agitator is suitable for Stir the liquid, suspension, emulsion and other materials with lower consistency.
The agitator is a widely used axial flow type high performance agitator with low discharge performance and low shear force. It has a convective circulation state at low speed and a turbulent state at high speed. The larger blade inclination angle and blade twist degree enable the agitator to reach a higher flow field during transient or even turbulent flow, and its drainage capability is higher than that of conventional propulsion. The agitator is increased by 30%. Suitable for low viscosity mixing, dissolution, solid suspension, heat transfer, reaction mass transfer, extraction, crystallization operations.
1 propeller agitator consists of 2 to 3 propeller blades, the working speed is higher, and the peripheral speed of the outer edge of the blade is generally 5-15 m/s. The propeller type agitator mainly causes axial flow and produces a large circulation amount, which is suitable for stirring low viscosity (<2Pa•S) liquid, emulsion and suspension with less than 10% solid particles. The shaft of the agitator can also be inserted horizontally or obliquely into the tank. At this time, the circulation loop of the liquid flow is asymmetrical, which can increase the turbulence and prevent the liquid surface from being sunken.
2 Turbine agitator consists of two to four flat or curved blades mounted on a horizontal disc. The ratio of the outer diameter, width and height of the blade is generally 20:5:4, and the peripheral speed is generally 3-8 m/s. The turbine causes a highly turbulent radial flow when rotated, and is suitable for the dispersion of gases and immiscible liquids and liquid-liquid reaction processes. The viscosity of the liquid to be stirred generally does not exceed 25 Pa•S.
3 paddle agitator There are two types of paddle and paddle. The flat paddle mixer consists of two straight blades. The ratio of the diameter of the blade to the height is 4 to 10, the peripheral speed is 1.5 to 3 m/s, and the radial flow velocity generated is small. The two leaves of the pitched agitator are reversed by 45 or 60 degrees, thus creating an axial flow. The paddle stirrer has a simple structure and is commonly used for the mixing of low viscosity liquids as well as the dissolution and suspension of solid particles.