Gas analyzer blowback control system

The utility model discloses a blowback control system of a gas analyzer, which relates to the field of clinker processing and comprises a sampling pipe and a blowback pipe arranged in the middle of the sampling pipe and communicated with the sampling pipe, and the blowback pipe is composed of a first connecting pipe, a processor and a second connecting pipe which are sequentially arranged from back to front. The sampling pipe and the blowback pipe are communicated and are respectively provided with the stop valves, and the valve rod of one stop valve rotates forwards and the valve rod of the other stop valve rotates backwards by utilizing the meshing action of the two gears, so that the other stop valve is opened when one stop valve is closed, and a blowback control system of the gas analyzer is added; when the analyzer performs automatic blowback, the stop valve on the sampling pipe is closed, the stop valve on the blowback pipe is opened, and compressed blowback air is isolated from entering an instrument t