Device for controlling liquid concentration in carbon fiber production

The utility model relates to a device for controlling the concentration of liquid in carbon fiber production, which solves the technical problems that the concentration of acrylonitrile liquid is unstable and is difficult to adjust in time in the existing carbon fiber production process, and is provided with a mixed liquid tank, and a liquid feeding pump is arranged at an outlet at the lower end of the mixed liquid tank; the liquid feeding pump is communicated with a temperature-controlled high-position storage tank heat exchanger through a pipeline, the high-position storage tank heat exchanger is communicated with a high-position storage tank, a pipeline is arranged at a discharging port of the high-position storage tank and communicated with a mixed liquid tank, and the pipeline between the discharging port of the high-position storage tank and the mixed liquid tank is a U-shaped buffer pipe. And a density detection flowmeter and a density meter are arranged at the rear end of the U-shaped buffer tube. The