Waste gas sampling device for equipment discharge port

The utility model provides a waste gas sampling device for a discharge port of equipment. Comprising a draught fan and a containing box, a storage tank is placed in the containing box, the two ends of the storage tank communicate with connecting pipes correspondingly, valves are arranged on the connecting pipes, a first fixing pipe matched with the connecting pipes is fixed to one side of the containing box, and one end of the first fixing pipe extends into the containing box; a hydraulic rod is fixed to the other side of the containing box, a second fixing pipe corresponding to the connecting pipe is fixed to the output end of the hydraulic rod through a connecting block, and an open hole matched with the second fixing pipe is formed in the containing box. The waste gas sampling device for the equipment discharge outlet solves the problems that according to an existing waste gas collection mode, a collection container is placed at the exhaust position of equipment for waste gas collection, the collection con