Natural gas and air uniform mixing device for gas engineering pipeline

The utility model discloses a natural gas and air uniform mixing device for a gas engineering pipeline, and relates to the technical field of gas mixing equipment. The device comprises two gas storage tanks, wherein the interiors of the two gas storage tanks are hollow, and pressing plates for dividing the interiors of the gas storage tanks into first cavities and second cavities are installed in the two gas storage tanks in a sliding mode; the two ends of the first connecting pipe communicate with the two first cavities correspondingly, and the first connecting pipe is connected with a gas pipe used for conveying gas into the first connecting pipe; the two ends of the second connecting pipe communicate with the two second cavities correspondingly. According to the mixing device, the two pressing plates reciprocate in the gas storage tank through the driving assembly, so that the proportion of gas entering the mixing pipe every time is consistent with that of air, mixing is completed, and compared with the pr