Sealing door with elastic fastening device for air intake

The utility model relates to a sealing door with an elastic fastening device for air intakes, which comprises an air intake body (1) and a sealing door (6) arranged on the end part of an air intake. The utility model is characterized in that one side of the sealing door (6) is combined with the air intake body (1) through a hinge mode; a plurality of elastic fastening hanging devices (3) are surrounded on the air intake body (1) through a hinge mode; the periphery of the sealing door (6) is provided with hanging noses (7) of which the position corresponds to the elastic fastening hanging devices and the number is equal to that of the elastic fastening hanging devices (3). The sealing door of the utility model has no need of special tools in the operation process of opening or closing again. The utility model has the advantages of convenience and rapidness. The utility model not only can meet operation requirements of rapid closing and opening for air intakes, but also can meet design requirements of good air tightness for air intakes.