Air collecting and detecting device

The utility model provides an air collection and detection device, which relates to the technical field of environmental monitoring and treatment and comprises a detection box body, a horizontal piston plate, a longitudinal partition plate, a vacuumizing assembly, a lifting mechanism and an air detector, the lifting driving part is fixedly installed on the inner wall of the detection box body, the bottom of the horizontal piston plate is connected to the lifting rod, the edge of the horizontal piston plate is connected to the peripheral wall of the detection box body in a sliding mode so that an inner cavity of the detection box body can be divided into an upper detection cavity and a lower detection cavity, and the longitudinal partition plate divides the upper detection cavity into at least two sub detection cavities and penetrates through the horizontal piston plate; a sub-detection cavity air inlet is formed in the top wall of the detection box body; the horizontal piston plate is provided with a sub dete