Medical negative pressure pump one-way valve structure

Abstract

The utility model relates to the technical field of one-way valves, in particular to a medical negative pressure pump one-way valve structure which comprises a one-way valve body, a ventilation assembly is arranged in the one-way valve body, and a negative pressure pump connecting assembly is arranged on one side of the one-way valve body. According to the medical negative pressure pump one-way valve structure, by installing the ventilation assembly, air can enter from the air inlet through groove through cooperation of the air inlet through groove, the sealing plug and other components when a negative pressure pump works, then the air can push the sealing plug towards the air outlet through groove, an air inlet hole in the sealing plug can move into the air outlet through groove, and therefore the negative pressure pump works conveniently. When the one-way valve is used for a long time, air enters the air outlet through groove from the air inlet and is discharged, then when the air wants to flow back, the sealing plug is pushed towards the air inlet through groove, the air cannot flow back due to the fact that the air does not enter the air inlet through groove, the sealing gasket behind the sealing plug can be pressed more and more tightly, and therefore the situation that the one-way valve flows back is avoided after the one-way valve is used for a long time.

Images