Rotary Vane Pumps

Rotary Vane Pumps Keep Things Cool

A type of positive displacement pump, rotary vane pumps are used to provide proper carbonation for the soft drinks that out of a dispenser. Because of their excellent handling of low-viscosity materials like refrigerants, rotary vane pumps are also extensively used for beer cooling systems and other laboratory needs.

Rotary vane pumps have vanes mounted on a rotor inside a cavity. Liquid is drawn into the cells with large volume intake. During rotation the vanes, driven by centrifugal force, extend from their slots, gliding in and out of the rotor, and form compression cells. With the decrease in the volume of the cells during rotation, air pressure increases forcing out the liquid on the discharge side of the rotary vane pumps.

Unique Design of Rotary Vane Pumps

Its unique design enables rotary vane pumps to become variable displacement pumps. By allowing the centerline distance from the rotor to the eccentric ring to change, the displacement of rotary vane pumps can be altered. This allows rotary vane pumps to even pump in reverse by moving the ring far enough. This characteristic makes rotary vane pumps efficient hydraulic oil control pumps and energy saving devices. 

The transportation industry is a major beneficiary of rotary vane pumps. Moving automatic transmission, power steering and brake fluids are among the most common uses of rotary vane pumps in cars. For large diesel trucks, rotary vane pumps are used as vacuum pumps for additional braking power. Most light aircraft use rotary vane pumps to drive the gyroscopes in flight instruments, altitude and heading indicators. Low-pressure gas applications such as exhaust emission controls use rotary vane pumps to provide secondary air injection.

Find rotary vane pumps that fit your laboratory equipment needs by visiting our online store today.

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