Heat insulation civil air defense door structure with high sealing performance

The heat insulation civil air defense door structure with the high sealing performance comprises a door plate, a heat insulation door body, an air bag, an air pump, an air conveying pipeline and an opening mechanism, and the opening mechanism comprises a first hydraulic rod, a bearing plate, a second hydraulic rod, a lifting plate, a rotating motor, a rotating rod, a U-shaped base, a connecting plate, a first electric push rod, a second electric push rod, an arc-shaped abutting plate and an isolation mechanism. Movable connecting plates are arranged on the two sides of the heat insulation door body, movable U-shaped bases are arranged on the two sides of the door plate, the connecting plates move into the U-shaped bases, and then a second hydraulic rod can enable a rotating rod to descend to penetrate through penetrating holes of the U-shaped bases and through holes of the connecting plates through a lifting plate and a rotating motor. An arc-shaped abutting plate in a through hole can abut against the outer