The utility model discloses a self-cleaning
flue particulate matter
measuring instrument which comprises two measuring gas chambers, target sample gas channels are fixedly connected to the inner sides of the two measuring gas chambers, through holes used for
flue gas communication are formed between the measuring gas chambers and the target sample gas channels, an emission
light source assembly is fixedly connected to the inner side of the measuring
gas chamber on one side, and an emission
light source assembly is fixedly connected to the inner side of the measuring
gas chamber on the other side. The inner side of the target sample gas channel on the other side is fixedly connected with a sampling detection
assembly, and the inner sides of the two measuring gas chambers are fixedly connected with
alcohol cleaning mechanisms; the hollow column is driven by the motor to rotate, the
brush fixed to one side of the hollow column is driven to rotate synchronously,
alcohol is conveyed to the hollow column through external equipment, then the
alcohol evenly flows out through liquid outlet holes in the
brush and infiltrates the
brush, and in the rotating process of the brush, the alcohol can soften dust attached to the emission
light source assembly and the sampling detection assembly, so that the detection efficiency is improved. And in cooperation with mechanical friction of the brush, the dust can be brushed off more effectively, and deep cleaning is achieved.