Temporary plugging device for reserved hole

The utility model belongs to the technical field of plugging devices, and particularly relates to a reserved hole temporary plugging device which comprises an air bag and a protective cover, an air nozzle is arranged on the protective cover and communicated with the air bag through an air pipe, and a cover body capable of being opened and closed is arranged at the bottom of the protective cover. When the plugging device is used, the air bag can be placed into a hole or a pipeline needing to be plugged, then the air nozzle inflates the air bag, the air bag is expanded, and therefore the hole orthe pipeline is plugged. The protective cover can be supported at an air opening or a pipeline in the using process, and foreign matter can be prevented from falling off. 本实用新型属于封堵装置技术领域，具体涉及一种预留孔洞临时封堵装置，包括气囊和防护罩，所述防护罩上设有气嘴，气嘴通过气管与气囊联通，所述防护罩底部设有可开合的盖体。可以将气囊放入需要封堵的洞口或者管道中，然后气嘴向气囊内充气，使得气囊膨胀，从而对洞口或者管道进行封堵。防护罩在使用过程中可以支撑在空口或者管道处，可以防止异物掉落。