Gas diluting device with adjustable proportion

The utility model discloses a gas diluting device with an adjustable proportion. Wherein the adjusting assembly and the filter are fixed to the shell, the pipeline assembly is used for connecting theadjusting assembly with the filter, the adjusting assembly is composed of a first adjusting piece and a second adjusting piece, the first adjusting piece and the second adjusting piece are both paneltype rotor flow meters, and knobs capable of adjusting flow are arranged at the lower ends of the rotor flow meters. The pipeline assembly comprises an air inlet pipe, an air outlet pipe, a first connecting pipe, a second connecting pipe, a third connecting pipe, a fourth connecting pipe, a fifth connecting pipe and a tee joint. According to the gas diluting device, the first adjusting piece and the second adjusting piece in the adjusting assembly are rotor flow meters with flow adjusting functions; therefore, the dilution ratio of the smoke discharged from the air outlet pipe can be adjustedand diluted at will, and th