Civil air defense air-tight door with high sealing performance

The invention provides a high-leakproofness civil air-tight door and relates to the technical field of civil air-tight engineering.The high-leakproofness civil air-tight door comprises a door frame, a door body is installed in the center of the door frame, a mounting groove is formed in the center of the door body, and two hinges are fixedly connected between the door body and the door frame; the top and the bottom of the front end face of the door frame are each rotationally connected with two rotating shafts. Baffles are fixedly connected to the outer walls of the two rotating shafts, a locking assembly is arranged in the center of the mounting groove, an oil feeding pipe is arranged on the locking assembly, and one end of the oil feeding pipe is in threaded connection with a dustproof plug. By means of the locking assembly, when the first gear is engaged with the two racks to lock the door, the second gear can make contact with lubricating oil at the bottom of the mounting shell, then the lubricating oil i