Fixed Vane Pumps -How Double Acting Vane Pumps Work


Posted April 2, 2020 by Cassidyvanepump

Double acting vane pumps can only be used as fixed vane pumps
 
Double acting vane pumps can only be used as fixed vane pumps. The double-acting vane pump is composed of a stator, a rotor, a vane, and an oil distribution plate. The rotor and the stator coincide with each other. The inner surface of the stator is composed of two segments of long radius, two segments of short radius, and four segments of transition curve connecting large and small arcs. When the rotor rotates, the blades move outward in the rotor slots under the action of centrifugal force and pressure oil at the root to press against the inner surface of the stator. Several sealed spaces are formed by the blades, the inner surface of the stator, the outer surface of the rotor, and the oil distribution plates on both sides. When the rotor rotates in a clockwise direction, during the movement from the sealed space on the small arc to the large arc, the blades are extended, the volume of the sealed space is increased, and the oil is sucked in from the fuel tank. During the arc, the blade is gradually pressed into the groove by the inner wall of the stator, the volume of the sealed space becomes smaller, and the oil is pushed out from the oil pressure port for the system. Each time the rotor rotates, it has to go through this process twice, so each work space needs to complete two suction and pressure oil, so it is called a double-acting vane pump.

Since this vane pump has two oil suction chambers and two oil pressure chambers, and their respective central angles are symmetrical, the oil pressure on the rotor is balanced with each other. Therefore, the double acting vane pump is also called unloading type For vane pumps, in order to completely balance the radial force, the number of sealed spaces (ie, the number of vanes) should be an even number.

The double-acting vane pump has a compact structure, uniform flow, large displacement, almost no flow pulsation, stable movement, low noise, and a volumetric efficiency of more than 90%. The rotor forces are balanced with each other and can work in high-pressure systems with long bearing life. However, the double-acting vane pump has a complicated structure and is difficult to manufacture, and the speed cannot be too high, generally below 2000 r / min. Its anti-pollution ability is also poor, and the quality of the oil is higher. If there are impurities in the oil, the blade will often be stuck in the groove.


Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Fixed Vane Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Welcome to buy: https://www.china-vanepump.com/product/
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Tags fixed vane pumps , hydraulic pumps , hydraulic vane pumps , vane pumps
Last Updated April 2, 2020