Shell oil distribution type cylindrical blade hydraulic pump

Abstract

The invention discloses a shell oil distribution type cylindrical blade hydraulic pump which comprises a shell, a rotor, two blades, two sealing strips and two cushion blocks. The rotor is positioned at the center; the shell is arranged outside; the two blades are respectively positioned at both sides of the rotor and are arranged in hollow circular rings at the opposite angles of the shell; an angle is formed between each blade and the rotor; the tangent of the angle is a ratio of the height of the shell to the diameter of the bottom circumference of the shell; the sealing strips are positioned between the rotor and the blades; the plane sides of the sealing strips are attached to one planes of the rotors; the cylindrical surface sides of the sealing strips are attached to cylindrical surfaces E1 of the blades; the cushion blocks are positioned in the hollow circular rings at the opposite angles of the shell; and the vacancy formed by the blades, the rotor and the sealing strips is just full filled with the cushion blocks. According to the invention, all the sealing positions are in a face seal mode and the shell oil distribution type cylindrical blade hydraulic pump has high discharge capacity, high pressure, high efficiency, high specific power and compact structure, is relatively easy to process and has low cost and long service life.

Description

technical field [0001] The invention relates to a hydraulic pump, in particular to a shell oil distribution type cylindrical vane hydraulic pump. Background technique [0002] The structure of the existing vane hydraulic pump is that the rotor is placed eccentrically in the oil cylinder, and the vanes are placed in the rotor radially or at a certain angle with the rotor radius. When working, the rotor rotates at high speed, and the vanes are thrown out under the action of centrifugal force. The body forms a sealed cavity, and the volume change generates pressure when it rotates. 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 there is a lot of friction between the vane, the rotor and the cylinder body during rotation, resulting in the hydraulic pump as a whole. Fast wear, short life and low efficiency. In addition, in order to ensure that the blades can safely ent...

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, and the output pressure is low. In addition, there is a lot of friction between the vane, the rotor and the cylinder body during rotation, resulting in the hydraulic pump as a whole. Fast wear, short life, low efficiency

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