Vent valve blade assembly of heating ventilation air conditioner and using method of vent valve blade assembly

The invention discloses a heating ventilation air conditioner ventilation valve blade assembly and a using method thereof, and belongs to the technical field of heating ventilation air conditioner ventilation valves. The heating ventilation air conditioner ventilation valve blade assembly comprises a ventilation valve shell, blades are installed in the ventilation valve shell, a filter screen is fixedly installed on one side of the ventilation valve shell, a rotating block is rotationally connected to the filter screen, a plurality of cleaning brushes are installed on the rotating block, and a rotating mechanism is installed on one side of the rotating block. A bearing ring is fixedly arranged on one side of the ventilation valve shell in a sleeving mode, a plurality of dust suction grooves are formed in the inner side of the bearing ring, and an induced draft fan is installed on one side of the bearing ring. According to the technical scheme, by arranging the cleaning brush, the bearing ring and the induced