Ventilation device for large electronic factory building

The utility model discloses an air interchanger for a large-scale electronic factory building, which comprises a factory building wall, a drainage plate is fixedly arranged in the factory building wall, an oxygen supply device is fixedly arranged on the rear side of the factory building wall, and an air pump is fixedly arranged at the air outlet end of the oxygen supply device. The air inlet end of the air pump is fixedly connected with the air outlet end of the oxygen supply device, the air outlet end of the air pump penetrates through the wall of the plant, extends into the wall of the plant and is fixedly provided with an air conveying pipe, the air outlet end of the air conveying pipe penetrates through the drainage plate and extends into the drainage plate, and a sealing plate is fixedly arranged on the surface of the drainage plate; according to the device, oxygen can be provided for the workshop in time after ventilation in the workshop, the situation that the body of an operator is abnormal due to the