Diaphragm pump gas lock short section structure

The utility model discloses a diaphragm pump gas lock pup joint structure, and relates to the technical field of conventional and unconventional oil and gas exploitation processes, in particular to the diaphragm pump gas lock pup joint structure, which comprises a gas lock pup joint main body, and a stepped groove, a clamping groove, an insertion hole and an exhaust hole which are formed in the gas lock pup joint main body, and a second sealing ring, a check valve, a spring, a top cover and a sand prevention pipe fixing seat are arranged in the gas lock pup joint main body. According to the diaphragm pump gas lock pup joint structure, by adopting the arrangement of the pressure relief hole and the ceramic nozzle, when the gas pressure in the gas lock pup joint main body is large during use, the check valve is closed, the pressure is discharged from the pressure relief hole, the purpose of automatically releasing a gas lock is achieved, manual maintenance is not needed, the use convenience is improved, and the