Vane pump with telescopic and controllable vane

Abstract

The invention discloses a blade pump with telescopic and controllable blades. The blade pump solves the problems that in the work process of the existing blade pump, the consumed energy is high, greater influence can be easily generated on work media, and the service life of the work media cannot be ensured. The blade pump with the telescopic and controllable blades is structurally characterized by comprising a stator and a rotor, wherein the rotor is rotatablely arranged in the stator, a plurality of blade grooves are arranged in the rotor in the radial direction, the blades are glidingly arranged in the blade grooves, and the blades can partially extend out of the radial outer side of the rotor or retracts into the rotor. A cavity is formed between the rotor and the stator, the cavity is provided with a fluid sucking region, a fluid compressing region and a blade retracting region, and two ends of a rotor and stator combined body are provided with end covers respectively. The blade pump is characterized in that a position limiting device used for limiting the sliding of the blades in the radial direction of the rotor is arranged on the rotor, and the position limiting device realizes the stable retraction of all blades into the rotor in a mode of being selectively clamped with the blades.

Description

technical field [0001] The invention relates to a vane pump, in particular to a vane pump comprising a stator and a rotor, a plurality of vanes are arranged radially in the rotor, and the vanes can be partially extended or retracted into the rotor with controllable vane expansion and contraction. Background technique [0002] There are mainly three structural forms of pumps used to pump fluids, namely plunger pumps, gear pumps and vane pumps. Vane pumps are widely used in many mechanical fields because of their excellent working performance. [0003] The structure of the existing vane pump mainly includes a stator and a rotor, the rotor is rotatably arranged in the stator, and a cavity is formed between the stator and the rotor. The inner wall surface of the stator is approximately elliptical, so that a fluid suction area, a fluid compression area and a vane retraction area are formed in the cavity. A number of vane grooves are provided in the rotor along its radial directi...

AI Technical Summary

Problems solved by technology

In the above cases, if the vane pump continues to work effectively, on the one hand, it will increase energy consumption, and on the other hand, because the hydraulic oil in the entire hydraulic pipeline stops flowing, the vane will stop the flow of the remaining fluid in the cavity of the vane pump. A small part of the hydraulic oil is continuously agitated, which will bring about changes in the physical characteristics of the part of the hydraulic oil, such as a decrease in viscosity and an increase in temperature, which in turn will increase the temperature of the vane pump

The physical parameters of the entire hydraulic oil system vary greatly, which will affect the overall service life of the hydraulic oil in the long run

If the rotor is stopped under the above conditions by setting a clutch, on the one hand, the structure of the vane pump will be complicated; Not guaranteed

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