An external spoke spring compensated internal and external gear pump

Abstract

The invention discloses an outer-circle spoke spring compensation inner and outer gear pump, which comprises a driving shaft, outer gears, outer-circle spoke springs, end face compensation disks, inner gears, front end outer covers, end cover screws, a pump body, rear end outer covers and crescent isolation blocks, wherein the end face compensation disks are arranged between rotating drums and the front end outer covers; a crescent slot is formed on the front plane of each compensation disk; an eccentric distance T is reserved between the outer circle of each compensation disk and an eccentric hole of each compensation disk; the outer circle of each compensation disk is matched with an inner hole of the pump body in a sliding manner; an outer circular ring of each outer-circle spoke spring is fixed on the back concave annular corner of each compensation disk; and a spoke terminal of each outer-circle spoke spring is pressed against the inner side face of each front end outer cover. The inwards sunken cambered surface and the outwards protruded cambered surface of each crescent isolation block are matched with each crescent slot in a sliding manner; due to the outer circular rings, which are fixed on the back concave annular corners of the compensation disks, of the outer-circle spoke springs and axial bounce generated by the spoke terminals pressed against the inner side faces of the front end outer covers, radial gaps in the volume spaces among teeth are controlled effectively and an end face abrasion compensation gap control technology is provided at the same time.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, and the international patent classification is F04D non-variable pump, which relates to an energy conversion rotary displacement pump which converts mechanical energy into liquid pressure energy, in particular to an external spoke spring compensation internal and external gear pump. Background technique [0002] Rotary positive displacement pumps have the advantage of high efficiency, but their efficiency is significantly reduced after long-term wear and tear. The main reason for the above defects is that the end face movable isolation between the high-pressure chamber and the low-pressure chamber cannot effectively seal. If the tolerance size of the end face is too small, it is easy to be stuck due to thermal expansion. If the tolerance size of the end face is too large, it will not be effective in sealing, and the sealing effect will be worse after long-term operation and wear. The producti...

AI Technical Summary

Problems solved by technology

The problem that has not been effectively solved is that after long-term high-speed operation, the inevitable wear of the end face cannot be effectively compensated.

my country patent authorization announcement number: CN1059019C swing vane pump; my country patent authorization announcement number: CN100374725C rotary vane pump; The internal gear pump of plastic casing; my country's patent authorization announcement number: CN101120175B and my country's patent authorization announcement number: CN101403382B a kind of gear pump for micro-miniature turbojet engine etc., all do not see the method and the measure that have practical and effective compensation, solve Gap Control Problems of End Surface Wear of Rotary Positive Displacement Pumps

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