Ship double-layer adjustable shutter air port

The utility model discloses a ship double-layer adjustable shutter tuyere which comprises a fixing frame, a transverse blade and a longitudinal blade, the transverse blade and the longitudinal blade are rotationally connected with the inner wall of the fixing frame through a rotating shaft, the longitudinal blade is located behind the transverse blade, and an adjusting mechanism is arranged in the side wall of the fixing frame. And the adjusting mechanism comprises a mounting groove, a sliding groove, a gear, a toothed plate, a groove, a sliding hole, a pushing block and a fixing rod, the mounting groove and the sliding groove are both formed in the side wall of the fixing frame, the sliding groove is located in the front side of the mounting groove, and the gear is rotationally connected to the interior of the mounting groove. According to the utility model, the mounting groove, the sliding groove, the gear, the toothed plate, the groove, the sliding hole, the pushing block and the fixing rod are arranged, t