Annular gasbag compensation inner and outer gear wheel pump

Abstract

The invention discloses an annular gasbag compensation inner and outer gear wheel pump. The gear wheel pump comprises a driving shaft, an external gear, an annular gasbag, an end face compensating disc, an inner gear, a front end outer cover, an end cover screw, a pump body, a rear end outer end, and a crescent spacing block, wherein an end face compensating disc is arranged between a rotating drum and the front end outer cover, the frontal plane of the compensating disc is provided with a crescent groove, the excircle of the compensating disc and an eccentric hole of the compensating disc have eccentric distance T, the excircle of the compensating disc and an inner hole of the pump body are slidably fitted; a lateral ring at one side of the annular gasbag is fixed on a back concave ring angle of the compensating disc, and the lateral ring at the other side of the annular gasbag leans against the inner side of the front end outer cover; an inner concave cambered surface and an outer concave cambered surface of the crescent spacing block are slidably fitted with the crescent groove so as to fix the lateral ring at one side of the annular gasbag through the back concave ring angle of the compensating disc; and the lateral ring at the other side of the annular gasbag leans against the inner side of the front end outer cover so as to generate axial rebound force, each intertooth space volume space is ensured to effectively control diametral clearance, and meanwhile, the gear wheel pump has the end face attrition compensation gap control technique.

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-converting rotary displacement pump that converts mechanical energy into liquid pressure energy, in particular to an annular airbag-compensated 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 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 Problems of End Surface Wear of Rotary Positive Displacement Pumps

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