The variable gear pump belongs to the field of hydraulic variable-capacity machinery for hydraulic transmission in mechanical engineering. The invention adopts the tight-bladder type of variable method, which not only solves the trapped oil phenomenon of the quantitative gear pump, reduces vibration and noise, Pump performance, can be used for high-precision, high-stability machining, especially in applications requiring large flow and the need for variable hydraulic machinery, gear pump applications have been expanded. Variable gear pump mechanical engineering is the hydraulic transmission of liquid The variable-capacitance machine is composed of a pump body, a gear, a front end cover, a rear end cover, a shaft, a screw and a positioning pin. The invention is characterized in that a gear pump with a variable pressure bag structure is adopted on the gear teeth of the gear pump.
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