The slurry pump impeller is the main rotating component which normally has vanes to impart the centrifugal force to the liquid. The impeller design is crucial as it influences flow patterns and ultimately, wear rates throughout the pump.
Slurry impellers are more commonly of the closed type (with a front shroud) but open type impellers (without a front shroud) are sometimes used for special applications.
The wide range of standard impellers cover most slurry pumping duties or special non-standard designs are also available.
Slurry Pump Impeller Vane Type
Slurry pump impellers have a plain and a Francis type vane.
The plain vane has a leading edge square to the back shroud, whereas the Francis vane has a leading edge projecting into the impeller eye.
The Francis vane has the higher efficiency, improved suction performance and slightly better wear life in certain types of slurry because the incidence angle to the fluid is more effective.
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