• Marine propellers are also used on side-entering mixers and are mounted with the impeller shaft inclined at an angle with respect to the vessel centerline, for improving process results.
  • The propeller is generally operated to produce down pumping action directed toward the bottom of the vessel, until deflected by the floor or the wall of the vessel.
  • The shearing action of the propeller is significant at high speeds.
  • Standard-blade marine propellers with square pitch are commonly used. Variations include four-bladed propellers, propellers with saw tooth edges for tearing action and perforated blades for shredding and breaking of lumps.
  • Speed Range – 400 – 1800 rpm (depending on diameter)
  • Speed Range – 400 – 1800 rpm (depending on diameter)
  • The power number for top-entering propellers and portable mixers in the turbulent range at a proximity factor of 1 is 0.87.
  • For side-entering mixers the power number ranges from 0.77 for propeller diameters up to 700 mm [6]. Propellers are generally manufactured by the casting process.

A propeller is a high-speed axial flow impeller generally used for liquids of low viscosity.

Other Blades

Pitched Blade Turbine
Pitched blade turbine are axial flow impellers used in top-entering agitator..Read more
High Efficiency Impeller
Hydrofoil impellers are also referred to as high-efficiency impellers since they are designed to maximize fluid flow and minimize shear rate..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