This is how vane pumps work
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In this video, learn how vane pumps work.
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Vane pumps are another type of positive displacement pump – and here’s how it works:
These pumps move fluid using the rotary motion of multiple sliding vanes. They have a slotted rotor that rotates inside a cam shaped housing.
The rotor is located close to the wall of the cam so that a cavity is formed on the opposite wall.
Each slot contains a sliding vane. As the rotor rotates, centrifugal force, hydraulic pressure and push rods work together to extend each vane to the casing wall.
This creates an expanding cavity on the inlet side – creating a vacuum that pulls liquid into the pump. The liquid is trapped between the vanes and casing wall and is carried to the outlet.
At the outlet the vanes are forced back into their slots – cavity size decreases – and the liquid is forced through the outlet port.
Because the vanes run in contact with the casing wall, vane pumps are commonly used in thin liquid applications.
