Cleaning type ventilation protection air-tight door

The invention relates to a cleaning type ventilation protection air-tight door. The cleaning type ventilation protection air-tight door comprises a door leaf. Inner air-tight doors are arranged on theinner side of the door leaf and vertically hinged to the door leaf, and each hinge point is located on one side of the corresponding inner air-tight door. Opening and closing devices which are used for driving the inner air-tight doors to rotate are connected to the inner air-tight doors and connected with a transmission device. The input end of the transmission device is connected with a hand wheel, a weight is detachably connected to the hand wheel, the force, applied to the hand wheel, of the weight generates the torque to the hand wheel, and the direction of the torque is the direction ofthe process that the inner air-tight doors are closed by the hand wheel. The cleaning type ventilation protection air-tight door has the effect that after the inner air-tight doors are locked and closed, the airtightness is g