PR-112 DIFFERENT IMPELLERS OF PUMPS AND TURBINES

An impeller is a rotor used to increase (or decrease in case of turbines) the pressure and flow of a fluid.

This model shows different impellers used in pumps and turbines.

Impellers are usually short cylinders with an open inlet (called an eye) to accept incoming fluid, vanes to push the fluid radially, and a splined, keyed or threaded bore to accept a drive-shaft.