Civil air defense door leaf positioning and sealing device

The utility model discloses a civil air defense door leaf positioning and sealing device which is arranged in a wall body and used for being matched with a civil air defense door leaf for use and comprises a lower support horizontally arranged in the length direction, and movable doorsill installation boxes are arranged above the two ends of the lower support in the length direction respectively. A sealing groove is formed above the movable doorsill mounting box, and a locking box and a hinge mounting box are arranged on the sealing groove; the civil air defense door leaf positioning and sealing device is used for being embedded in a wall body around a door opening, and the outer end face of a groove body of a sealing groove of the positioning and sealing device is used for being flush with the outer wall face of the wall body. The door leaf has the advantages of being simple in structure, low in production cost and capable of increasing the contact face of the door leaf and the wall body, stress concentratio