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The working principle of vane pump
| Author : Zhang Date : 8/20/2014 10:09:35 PM |
The working principle of vane pump
A, single function
Blade is embedded in the groove and can slide freely, when, produced by the rotation of blades to under the action of a centrifugal pump shell, vane pump is a positive displacement pump, the adjacent two blades movement with pump casing and rotor closed down the volume of the minimum, maximum when above, when the rotor rotates clockwise, the adjacent two blades experience from the bottom to the top of the process is the volume increase, so the oil absorption (from the fourth quadrant to the second quadrant);From the top to the next is volume decreasing process, so the pressure oil (from the second to the fourth quadrant).
B. The double function
When motor drive along the rotating rotor blade in centrifugal force and oil pressure at the bottom of the blade, protruding from the under the dual role of the top close to on the stator surface.In four concentric circular arc on the four blades, respectively, and the external surface of the rotor, stator inner surface and two match up four seal oil cavity flow table.The oil cavity as the rotation of the rotor seal oil cavity changes from small to large and from big to small, can through the flow of oil absorption window are connected to the suction mouth () or discharge of oil window (connected to the discharge of oil mouth) of oil suction or pressure.
In the process of rotor each turn, each work finished oil cavity two oil pressure and oil absorption, so called double-acting vane pump, because of symmetrical between high and low pressure chamber, axial force balance, for unloading.
The above: High pressure gear pump fault diagnosis method of wavelet packet
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