• Hydrofoil impellers are also referred to as high-efficiency impellers since they are designed to maximize fluid flow and minimize shear rate. Since most industrial applications require high pumping capacity and less fluid shear, these impellers are popular in the majority of mixer installations.
  • Figure shows a high-solidity-ratio hydrofoil impeller used for high viscosity materials and gas applications.
  • Advances in the hydrofoil impeller designs have lead to the development of an additional family of these impellers. Figure above  illustrates the four types of these impellers with different solidity ratios, the ratio of the total blade area to a circle circumscribing the impeller.
  • Low solidity ratio impellers are efficient for liquid blending and solid suspensions.
  • Higher-solidity-ratio impellers are more effective for axial flow patterns as the viscosity increases.
  • For gas–liquid dispersions, higher-solidity-ratio impellers with wide blades provide an effective area of preventing bypass of gas through the impeller hub.

 

Other Blades

Pitched Blade Turbine
Pitched blade turbine are axial flow impellers used in top-entering agitator..Read more
Marine Propellers
A propeller is a high-speed axial flow impeller generally used for liquids of low viscosity…Read more
Flat Blade Disc Turbine
The turbine is a disk-type (six-blade turbine) radial flow impeller..Read more
Paddle Turbine
Open-blade impellers like the flat blade turbine (also known as a paddle impeller) and backswept open turbine are radial flow impellers..Read more
Anchor Mixer
Anchor mixers are among the more common types of high-viscosity liquid mixers..Read more
Helical Mixer
Helical mixers are capable of operating over a wide band of viscosities, ranging from low-viscosity liquid to highly viscous materials up to 4 million cP.. Read more
High Shear Impeller
High-shear impellers are used in applications that require a high shearing action, as in grinding, dispersing pigments, and making emulsions…Read more
Change Can Mixers
Change can mixers are configured vertically, with a vertical cylindrical vessel and a bottom dished end..Read more

Related Articles

Axial Turbine – Marine propellers, pitched blade turbines, hydrofoil impellers are axial turbines…Read more