High pressure large flow variable vane pump

Abstract

The invention provides a high-pressure large-flow variable vane pump. The variable vane pump comprises a shell, a rotor, blades, an inclined plate and an oil distribution block; the shell covers the outer portion of the rotor and is coaxial with the rotor, at least three first positioning grooves which are uniformly distributed in the circumferential direction are formed in the shell, and second positioning grooves corresponding to the first positioning grooves are also formed in the outer surface of the rotor; the blades are installed on the first positioning grooves and the second positioning grooves at the same time, the inclined plate is obliquely arranged in the shell, the axis of the inclined plate is not overlapped with the axis of the rotor, sliding grooves corresponding to the blades are formed in the inclined plate, the sliding grooves are arranged on the blades in a sliding and sleeve mode, and the oil distribution block is connected with one end surface of the rotor; the inner wall of the shell, the two adjacent blades, the outer wall of the rotor and the surface of the inclined plate form a containing cavity, when the rotor rotates, the rotor drives the shell and the blades to rotate together, and further drives the inclined plate to rotate around the axis of the inclined plate; and in the rotating process, the sliding grooves in the inclined plate slide along theblades, so that the volume of the containing cavity changes periodically to form a high-pressure containing cavity and a low-pressure containing cavity.

Description

technical field [0001] The invention relates to a vane pump, in particular to a high-pressure, large-flow variable vane pump. Background technique [0002] The existing vane pump structure is that the rotor is placed eccentrically in the oil cylinder, and the blades are placed in the rotor radially or at a certain angle with the rotor radius. When the rotor rotates at a high speed during operation, the blades are thrown out under the action of centrifugal force and formed with the oil cylinder. Sealed cavity, the volume change generates pressure when rotating. This type of vane pump is sealed by a contact line between the vane and the cylinder body, so the sealing performance is poor, the output pressure is low, and the relative linear velocity between the vane and the cylinder body is very high during rotation, resulting in great friction. As a result, the overall wear of the vane pump is fast, the life is short, and the efficiency is low. In this way, the speed of the pu...

AI Technical Summary

Problems solved by technology

This type of vane pump is sealed by a contact line between the vane and the cylinder body, so the sealing performance is poor, the output pressure is low, and the relative linear velocity between the vane and the cylinder body is very high during rotation, resulting in great friction. As a result, the overall wear of the vane pump is fast, the life is short, and the efficiency is low

Images