Self-adaptive triggered pollution source waste gas sampling device

The utility model relates to the technical field of plankton sampling equipment, in particular to a pollution source waste gas sampling device capable of being triggered in a self-adaptive manner. By arranging the wind direction detection device, pollution source waste gas in a specific direction can be sampled, the first valve is opened only when the pollution source waste gas in the specific direction is detected, the pollution source waste gas enters the sampling equipment, and the second valve and the detector for preliminary detection of the waste gas are additionally arranged in the sampling equipment; the first gas outlet is communicated with the gas inlet, waste gas is preliminarily detected through the detector, once it is detected that the concentration of waste gas reaches a preset value, the second valve is controlled to act so that the second gas outlet can be switched to be communicated with the gas inlet, and waste gas collection operation is conducted through the waste gas collection cavity fo