Automatic smoke sampling device

The utility model provides an automatic smoke sampling device, which belongs to the technical field of environmental protection monitoring equipment, and comprises a main shell, a driving support mechanism, a switching mechanism, a plug-in unit, a transportation drag chain and a rotating roll shaft, and the side surface of the main shell is provided with an access hole for a sampling module to pass through. According to the automatic smoke sampling device provided by the utility model, the transportation drag chain is driven by the rotating roll shaft and the driving and supporting mechanism to reciprocate so as to take out and reinstall the sampling modules, and different sampling modules are switched through the switching mechanism, so that the sampling modules are automatically replaced, and the efficiency of smoke sampling work is improved. In addition, the transportation drag chain is adopted to transport the sampling module, the transportation drag chain can extend into a straight line during sampling,