Self-cleaning analysis instrument device

The invention relates to a self-cleaning analysis instrument device, which comprises a sampling pipe, a circulation adjusting tank, an analysis instrument, a cleaner and a liquid discharge pipe, the water inlet end of the sampling pipe is connected with a main pipeline of water flow, and the water outlet end of the sampling pipe extends into one side of the inside of the circulation adjusting tank and is used for introducing the water flow of the main pipeline into the circulation adjusting tank; a flow guide pipe is arranged in the circulation regulating tank, a top inlet of the flow guide pipe is positioned at the upper part of the circulation regulating tank, and a bottom outlet of the flow guide pipe penetrates through the bottom surface of the circulation regulating tank, is connected with a liquid discharge pipe and is used for guiding water in the circulation regulating tank into the liquid discharge pipe; a probe of the analysis instrument is detachably inserted into the circulation regulating tank an