Intelligent building ventilation device

The utility model relates to the technical field of constructional engineering, in particular to an intelligent building ventilation device which is characterized in that a box body I of an air inlet box is square, an air inlet hole is formed in the center of the box body I, an air inlet fan is mounted at the front end of the box body I, a filter screen is mounted on each replaceable frame I, and a dust removal assembly is mounted between the two replaceable frames I; at least one bump is arranged on the body, the center of the body is fixedly connected with a rotating shaft, the rotating shaft is driven by a dust removal motor, and the maximum distance from the center of the body to the outer edge of the bump is not less than half of the distance between the two filter screens. The driving motor of the air inlet fan rotates reversely, then the dust removal motor is started, the dust removal motor drives the dust removal assembly to rotate through the rotating shaft, the protruding blocks on the dust removal