Plastics burning flue gas is collected and dust density detection device

The utility model discloses a plastics burning flue gas is collected and dust density detection device, including collecting box and detection case, collecting box and detection case are the cavity structure, detection case fixed mounting is in one side top of collecting box, and is connected with the air duct between collecting box and the detection case, the inside fixed mounting of collecting box has a backup pad, and the bottom of backup pad is equipped with the air discharge fan, the bottom of collecting box is equipped with fixed diaphragm, and ventilative mouthful has been seted up in the middle part of fixed diaphragm, and ventilative mouthful inside fixed mounting has a filter screen, the bottom fixed mounting of fixed diaphragm has the deashing frame, the screw thread horizontalpole and the sliding cross rod of the competent setting of internal connection of deashing frame, be connected with two mutually opposite removal risers between screw horizontal pole and the sliding cross rod. The utility mod