Turbine impellers Turbine impellers differ in their names and uses depending on the shape of the blade and the angle of installation. There are two main categories in terms of form. One type has a disc mounted on the hub, and the blades are mounted on the disc. The disc is turbine type, and the other is that the blades are directly mounted directly on the hub, which is called a turbine type. If the blade is mounted vertically, it is called a radial flow turbine, and the blade is mounted obliquely to the axial flow turbine. If the blade is said to be curved, it may also be referred to as a curved blade turbine, and the blade is mounted obliquely as an axial flow turbine. If the blade is curved, it may also be referred to as a curved blade turbine. The radial flow turbine rotates to draw the liquid from the axial direction and discharge it in a direction perpendicular to the axis. When there is a baffle in the tank, the discharge flow meets the tank wall and is separated up and down, so that a flow pattern of up and down circulation is formed in the tank. This type of impeller has high power consumption, strong shearing force and discharge capability.
Therefore, it is suitable for applications where there is a strong shear and a certain circulating flow, such as in liquid-liquid systems for emulsification, emulsion polymerization, suspension polymerization, extraction, etc., in solid-liquid systems for drying The wet and wet filter cake is pulverized and dissolved on one side of the solid; for the gas-liquid system, it is used for gas dispersion such as oxidation reaction and absorption with chemical reaction. For a disc turbine, it is used in many gas-liquid operations because it keeps the gas at the next stage of the impeller and disperses it, reducing the waste of gas. On the other hand, the axial turbine discharges the liquid in a direction parallel to the axis for effective axial circulation. Producing the same displacement, the impeller requires only half the power of the radial flow turbine, so it is an effective impeller for the circulation of the tank. Such impellers are mainly used in applications where strong circulation is required in liquid-liquid and solid-liquid systems, such as uniform mixing, reaction, heat transfer, and the like.