Testing device for resisting water pressure and air flow of air filter

The utility model relates to the field of medical detection equipment and particularly provides a testing device for resisting water pressure and air flow of an air filter. The testing device comprises a rotor flow meter, pressure gages, a filtering shell, a switch and an injector. The testing device is characterized in that an air pipe is connected with an inlet of the rotor flow meter; an outlet of the rotor flow meter is connected with a three-way pipe by a pipeline; the other two ends of the three-way pipe are respectively connected with the inlet of one pressure gage and the inlet of the filtering shell; the outlet of the filtering shell is connected with another three-way pipe by a fine-diameter pipeline; the other two ends of the other three-way pipe are respectively connected with the inlet of the other pressure gage and the outlet of the switch; the inlet of the switch is connected with the injector. Compared with the prior art, the testing device has the advantages of novel, simple and practical str