Oxygen supplement and control apparatus after the sealed oxygen-reducing pest killing of tobacco

The utility model discloses an oxygen supplement and control apparatus after the sealed oxygen-reducing pest killing of tobacco, wherein a sealing tobacco stack (3) is provided with an air outlet pipeline (2) and an air inlet pipeline (9), an air outlet electromagnetic control panel valve (1) is arranged on the air outlet pipeline (2), an air inlet electromagnetic control panel valve (10) is arranged on the air inlet pipeline (9), the inlet end of an air-cleaning drier (8) is connected with a high pressure fan (7), the outlet end of the air-cleaning drier (8) is connected with the air inlet pipeline (9), an oxygen detecting instrument (4) is arranged in the sealing tobacco stack (3) and is electrically connected with the input end of a transducer controller (5), and the output end of the transducer controller (5) is respectively connected with the air outlet electromagnetic control panel valve (1), the air inlet electromagnetic control panel valve (10) and the high pressure fan (7) through electric control mode.