Valve control gas roots flowmeter

The utility model relates to the technical field of flow meters, and discloses a valve control gas roots flow meter which comprises a counter, a connecting shaft seat is fixedly installed at the bottom end of the counter, a top cover is fixedly installed at the bottom end of the connecting shaft seat, a rotating shaft is fixedly installed in the top cover, a shell is fixedly installed at the bottom end of the top cover, and the rotating shaft is fixedly installed in the shell. And a main waist wheel and an auxiliary waist wheel are fixedly mounted in the shell. According to the valve-controlled gas roots flowmeter, the fixing sleeve is arranged, a worker inserts an inserting strip on the gas inlet pipeline into the inserting groove, the fixing sleeve is rotated, the shell and the gas inlet pipeline are connected through the fixing sleeve, the mounting method of the gas outlet pipeline is the same, operation is easy, time and labor are saved, gas enters the shell from the gas inlet, the baffle is pushed to mov