Impellers Or Blades

Based on the predominant flow pattern, impellers can be grouped in three main categories:

Radial flow impellers which discharge normally to the shaft
Axial flow impellers which discharge in a plane parallel to the shaft axis
Tangential flow impellers which have lines of flow tangential to the impeller periphery
The following listed types of impellers are some of the better known forms or shapes and provide some idea of the variety of mixers in the market:

PROPELLERS

Marine propellers
Hydrofoil propellers
High flow propellers

PADDLES

Paddle anchor
Paddle flat beam – basic
Paddle double – motion
Paddle gate
Paddle horseshoe
Paddle glassed steel (used in glass-lined vessels)
Paddle finger
Paddle helix
Multi paddle

TURBINES

Turbine disc flat blade
Turbine hub mounted curved blade
Turbine disc mounted curved blade
Turbine pitched blade
Turbine bar
Turbine shrouded

HIGH SHEAR BLADES (IMPELLERS)

High Shear blade or disc
High Shear modified blade or disc
High Shear modified cone
High Shear modified turbine

HELICAL IMPELLERS

Ribbon impellers
Double Ribbon impellers
Helical screw impellers
Sigma impellers
Z-blades

VARISHEAR IMPELLERS

Variable pitch impeller, adaptable while in operation

These guidelines and notes are presented as general guides only and no warranty is implied or provided