Airtight tool for plugging multiple inner holes

The utility model relates to the field of air tightness detection, in particular to an air tightness tool for plugging multiple inner holes, which comprises a component, a plugging groove is formed in the center of the top of the component, flow channels distributed at equal intervals are formed in the outer wall of the component, a connecting groove is formed in one end, located at the flow channels, of the component, and a plugging structure is inserted in the plugging groove. A sealing assembly is installed in the blocking structure, and a connector is connected into the connecting groove. The blocking structure comprises a movable blocking rod, a rubber sealing ring fixed to the bottom of the outer wall of the movable blocking rod, compression grooves formed in the outer wall of the rubber sealing ring at equal intervals, and rubber sealing rings fixed in the compression grooves. The movable plugging rod extends into the plugging groove, the contact plate compresses the connecting spring after making cont