Leakage rate measuring device for pneumatic actuating mechanism

The utility model relates to the technical field of instruments and meters, and particularly discloses a leakage rate measuring device for a pneumatic actuating mechanism, which comprises a box body divided into a first liquid area, a second liquid area and a third liquid area, the first liquid area is completely isolated from the second liquid area, and the second liquid area is partially isolated from the third liquid area; a first pump body is arranged in the first liquid area, a second pump body is arranged in the second liquid area, the first pump body and the second pump body are communicated through a first guide pipe, and the third liquid area is connected with an air cylinder of a pneumatic actuating mechanism to be tested through a second guide pipe; the first liquid level monitoring mechanism is used for monitoring the liquid level of the second liquid area; the second liquid level monitoring mechanism is used for monitoring the liquid level of the third liquid area; the controller can calculate th