Rain -tight axial -flow type roof ventilator

The utility model belongs to the technical field of the environmental protection equipment, especially, relate to a rain -tight axial -flow type roof ventilator, the hood below is equipped with the dryer, the hood top is equipped with rings, the threaded rod is located the hood below and supports the hood, dryer bottom and base fixed connection, the dryer top is connected with waterproof flange, the base lateral part is equipped with the screw hole, base and installation between the basis threaded holes and fixing bolt through the lateral part cooperate and be connected, the edge of base is equipped with rain -proof swash plate, pass through hinge connection between rain -proof swash plate and the base, dryer and base are monolithic structure. The beneficial effects of the utility model are that: through mounting means and the mounted position that improves spare part to add rain -proof swash plate, can prevent effectively that the rainwater from getting into roof ventilator, has guaranteed roof ventilator's