Gooseneck type air pipe head

The utility model discloses a gooseneck type air pipe head, including the valve body, the internally mounted of valve body has ventilative device and sealing device, seted up the through -hole on the valve gap, nested on the through -hole inner wall have the permeability cell, and the inner chamber of permeability cell and valve body communicates with each other, first crossbeam and second crossbeam are installed on the inner wall of shell, and the back shaft passes the centre of a circle of fan and locates just and fan swing joint, the guard ring is established under the shell and ventilate hole has been offered at the center of guard ring, and floater swing joint is in the inside of endotheca and guard ring. This gooseneck type air pipe head, fresh air admission valve from the space of fire prevention net is internal, micro motor drive fan rotatory back on the back shaft, and gas delivery to boats and ships mi cang that the fan just can be continually reaches the purpose that air permeability is good, to ge