Secondary air door structure of boiler

The utility model discloses a boiler secondary air door structure which comprises an air pipe, flange plates are fixedly connected to the two ends of the air pipe, mounting holes are formed in the corners of the two flange plates, torsion supports are fixedly connected to one sides of the front end face and the rear end face of the inner wall of the air pipe, air door valve plates are rotationally connected to the two torsion supports, and the air door valve plates are connected to the air pipe. A wind scooper is fixedly connected to one side, close to the air door valve plate, of the inner wall of the air pipe; a rotary supporting structure is fixedly connected to one side of the outer surface of the front end and the outer surface of the rear end of the air pipe, and a rotary adjusting structure is rotationally connected between the air pipe and the rotary supporting structure. By designing the rotation adjusting structure, the rotating block, the rotating support and the rotating shaft can be driven to rot