How does a hydraulic vane pump work?
A vane pump uses a rotating cylinder with slots (or rotors) housing a series of vanes that rotate inside the cavity. The rotor is offset in a casing bore, so that when rotated, the vanes slide in and out. This creates expanding and contracting volumes that move liquid through the pump.
What are vane pumps used for?
Vane pumps are commonly used as high-pressure hydraulic pumps and in automobiles, including supercharging, power-steering, air conditioning, and automatic-transmission pumps. Pumps for mid-range pressures include applications such as carbonators for fountain soft-drink dispensers and espresso coffee machines.
What is meant by vane pump?
A vane pump is a self-priming positive displacement pump providing constant flow at varying pressures. The pump is fitted with a relief valve to prevent the pump from building to a pressure which may damage the pump. The pump head contains a slotted rotor which contain vanes.
Can vane pumps run dry?
Vane pumps have no internal metal-to-metal contact and self-compensate for wear, enabling them to maintain peak performance on these non-lubricating liquids. Sliding vane pumps can run dry for short periods of time and handle small amounts of vapor.
Where are hydraulic vane pumps used?
Vane pumps were, at one time, commonly used on utility vehicles such as aerial buckets and ladders. Today, the vane pump is not commonly found on these mobile (truck-mounted) hydraulic systems as gear pumps are more widely accepted and available.
What type of pumps are vane pumps?
A vane pump is a positive displacement pump that delivers a constant flow rate under different pressure conditions. It is a self-priming pump. It is known as a “vane pump” because it pressurizes the fluid due to the impact of the vanes.
Do you need to prime a vane pump?
Accordingly, conventional wisdom suggests that outlet pressure is not required for a vane pump to prime. The centrifugal force on the vanes sets up the initial seal to allow the pump to draw fluid from the reservoir.