Sampling device suitable for gas contaminant concentration mean value is measured

The utility model relates to a sampling device suitable for gas contaminant concentration mean value is measured, include: the female pipe of main part, the intercommunication has a plurality of branches branch pipe on it, the sampling tube of bleeding, its one end and the female pipe one end intercommunication of main part are equipped with the sampling tube valve of bleeding on the sampling tubeof bleeding, the blowback pipe, its one end and the female pipe one end intercommunication of main part are equipped with blowback pipe valve door on the blowback pipe, the female pipe of main part,bleed sampling tube and tubular the one -tenths y -type three -way pipe of blowback, and the female pipe of main part with bleed contained angle and main part between the sampling tube female manage equal with the contained angle of blowback between managing. The beneficial effects of the utility model are that: can acquire the average value of single the interior target gas pollutant levels of interim test hole fast, redu