IVPV Series Double vane Pumps

Single-acting vane pump is composed of stator, rotor, blade and main parts such as flow distribution. The stator is made of wear-resistant material. The rotor is provided with a blade groove in which the blade is mounted and slides. The rotor and stator are eccentrically arranged with eccentricity e, and the distribution plates on both sides are closely fitted. When the motor drives the rotor to rotate, the blade clings to the inner surface of the stator under the action of centrifugal force or spring force or liquid pressure. In this way, a number of sealing working volumes are formed between the stator, rotor, blade and distribution plate. When the rotor rotates in the direction shown in the figure, the right blade gradually extends outward, and the sealing volume between the blades gradually increases, forming a local vacuum. The oil is sucked through the suction window on the distribution plate (as shown by the dotted line in the figure) from the suction port of the pump. On the left side of the rotor, the blade is forced to retract under the action of the stator, and the sealing volume between the blades is gradually reduced, and the oil is discharged from the discharge window on the flow distribution plate. Every rotation of the rotor completes a suction and discharge for each working volume, so it is called a single-acting vane pump. Single acting vane pump eccentricity e can be changed. Change the size of e can change the pump displacement. If the eccentric direction changes, the pump suction and discharge direction also changes. In order to balance the pressure at both ends of the blade in the discharge area, so as to smoothly slide out of the rotor slot under the action of centrifugal force and stick to the stator surface, the bottom of these blade slots is usually connected with the discharge cavity; The bottom of each blade groove located in the suction area is communicated with the suction cavity to avoid the blade end and the stator being pressed too tightly, thus reducing their wear. Single-acting vane pump side is low pressure, one side is high pressure, pump shaft and bearing to bear a large radial load. Therefore, the single-acting vane pump is also called non-equilibrium vane pump, which limits the increase of the working pressure of the single-acting vane pump.