Cylindrical-spring compensation gear pump

Abstract

The invention relates to a cylindrical-spring compensation gear pump. The cylindrical-spring compensated gear pump comprises a driving shaft, a driven shaft, a main gear, a follower gear, a main cylindrical spring, a secondary cylindrical spring, end surface compensation discs, a front outer end cover, an end cover bolt, a pump body and a back outer end cover, wherein the end surface compensation discs are arranged between the main gear the front outer end cover and between the follower gear and the front outer end cover, and a main boss at the back of each end surface compensation disc is fixedly provided with one end of the main cylindrical spring, and the other end of the main cylindrical spring is pressed against the inner side surface of the front end outer cover; and a secondary boss at the back of each end surface comprehensive disc is fixedly provided with one end of the secondary cylindrical spring, and the other end of the secondary cylindrical spring is pressed against the inner side surface of the front end outer cover. Depending on axial rebounding forces commonly generated by the other end of the main cylindrical spring and the other end of the secondary cylindrical spring, which are respectively pressed against the inner side surface of the front end outer cover, the front planes of the end surface compensation discs are tightly clung with one side end planes of the main gear and the follower gear so that the other side end planes of the main gear and the follower gear are forced to be tightly clung with the inner plane of the back outer end cover, thereby ensuring that a gear pump always runs at high efficiency.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, and the international patent classification is F04D non-variable displacement pump, which relates to an energy conversion rotary positive displacement pump which converts mechanical energy into liquid pressure energy, in particular to a cylindrical spring 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 l...

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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