Impeller(s)

An impeller is a rotor with curved blades designed to accelerate fluid radially outward from the center of rotation. In agitation assemblies, it converts rotational mechanical energy into kinetic energy and pressure in the fluid, creating flow patterns essential for homogenization, suspension, heat transfer, and chemical reactions. Impellers are characterized by their blade geometry, diameter, rotational speed, and flow direction (axial, radial, or mixed).

Impellers operate on the principle of centrifugal force and fluid dynamics. As the impeller rotates, its blades impart momentum to the surrounding fluid, creating a pressure differential that induces flow. In agitation systems, this generates turbulence, shear forces, and circulation patterns (such as axial flow for top-to-bottom mixing or radial flow for high-shear applications) to achieve desired mixing objectives like dispersion, emulsification, or solid suspension.