Flue gas baffle gate valve and driving method thereof

The invention belongs to the field of valve bodies, and particularly provides a flue gas baffle gate valve and a driving method thereof.The flue gas baffle gate valve comprises a valve body, a valve plate and a driving assembly; the valve body is provided with a valve port; the valve plate comprises a door plate body, a rotating shaft, a sealing air bag and an air pump. The rotating shaft penetrates through the door plate body and then is rotationally connected to the valve port. The sealing air bag is arranged around the side wall of the door plate body; the air pump communicates with the sealing air bag and is suitable for inflating or sucking air into the sealing air bag, and sealing or sealing releasing between the valve port and the door plate body is completed. When the valve is closed, the door plate body is rotated to be closed with the valve port, then the air pump inflates the sealing air bag, and sealing is completed; when the valve is opened, the air pump firstly pumps out air in the sealing air b