Stator magnetic pole type electric roller vane pump

Abstract

The invention discloses a stator magnetic pole type electric roller vane pump, which comprises a pump shell, wherein the pump shell is provided with an oil inlet and an oil outlet; a direct current(DC) drive motor is arranged in the pump shell; a relief valve and a roller pump are arranged between the oil inlet and the DC drive motor; an one-way valve is arranged in the oil outlet; the roller pump comprises an oil intake end, a stator, a rotor, a plurality of rollers and a port plate, wherein the stator is arranged between the cap of the oil intake end and the port plate; the rotor is arranged in the stator; an U-shaped groove is formed in the edge of the rotor and the rollers are arranged in the U-shaped groove. The stator magnetic pole type electric roller vane pump, disclosed by the invention, has the beneficial effects that the impact abrasion to the sidewall of the stator caused by the rollers in the roller pump due to the action of start centrifugal force is avoided; the tight contact among the magnetic sidewall of the stator, the rollers and the groove of the rotor can relieve oil fluid leakage, thereby increasing volumetric efficiency and mechanical efficiency of the pump; the ability of resisting external load sudden change is greatly augmented; the reliability is improved, meanwhile, the service time of the pump is prolonged and low costs of good quality products are realized.

Description

technical field [0001] The invention relates to an electric roller vane pump, in particular to a stator magnetic pole type electric roller vane pump. Background technique [0002] The stator magnetic pole type electric roller vane pump is a mechatronic volumetric pump, the upper part is an armature, and the lower part is a roller pump. When working, the roller pump rotates at a high speed driven by the armature, and the internal generated The pressure difference presses the medium out to realize the pumping of oil. [0003] This type of oil pump has a small volume and can be widely used in fuel supply systems of automobiles and motorcycles. [0004] Between the roller and the stator of the existing roller-type electric fuel pump, during the high-speed rotation starting process, the wear of the roller and the stator is very large, which not only reduces the service life of the fuel pump, but also causes damage to the roller and the stator. If the matching clearance is too l...

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Problems solved by technology

[0004] Between the roller and the stator of the existing roller-type electric fuel pump, during the high-speed rotation starting process, the wear of the roller and the stator is very large, which not only reduces the service life of the fuel pump, but also causes damage to the roller and the stator. Excessive fit clearance will affect the oil pressure performance of the oil pump

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