Hydraulic VP vane pump has a complicated structure, large contour size, relatively large moving parts, large leakage, unbalanced radial hydraulic pressure on the shaft, large noise, volumetric efficiency and mechanical efficiency, and no quantitative vane pump height; however, It can automatically adjust the flow according to the load pressure, which is more reasonable in power use, which can reduce oil heat.
The blade also has an inclination angle, but the inclination direction is exactly opposite to that of the quantitative vane pump. This is because the upper and lower pressures of the vane of the variable vane pump are balanced, and the outward movement of the vane in the oil suction area mainly depends on the centrifugal inertia when it rotates. According to the mechanical analysis, The oblique direction is more favorable for the blade to protrude outward under the centrifugal inertia.
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VP Hydraulic Pump Manufacturers
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