An internal pressure channel compensation gear pump

Abstract

An internal pressure channel compensation gear pump, comprising a driving shaft, a driven shaft, a main gear, a slave gear, an end face compensation disc, a front outer end cover, an end cover screw, a pump body, and a rear outer end cover, the main gear and There is an end face compensation disc between the gear and the front outer end cover, and the pump body has an internal pressure passage, one end of the internal pressure passage is connected to the cavity on the back of the compensation disc, and the other end of the internal pressure passage is connected to the discharge port . With the aid of the axial force generated by the internal pressure channel in the cavity on the back of the compensation disc, the front plane of the end face compensation disc is close to the one side end plane of the main gear and the slave gear, forcing the other side of the main gear and the slave gear. The plane is close to the inner plane of the rear outer end cover, which constitutes the axial end face wear compensation clearance control technology to ensure that the gear pump is always in high-efficiency operation.

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 positive displacement pump which converts mechanical energy into liquid pressure energy, in particular to an internal pressure channel compensation 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 production line h...

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 of end face wear of rotary positive displacement pump

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