Liquid adding equipment for protease production

The utility model relates to liquid adding equipment for protease production, which aims at solving the technical problems that the liquid adding equipment for protease production does not cool a liquid outlet of a liquid conveying pipe, and protease K in the liquid conveying pipe is automatically decomposed before entering the protease production equipment, and comprises a liquid storage tank and a freezing mechanism, the bottom end of the liquid storage tank is connected with a liquid conveying pipe through an electromagnetic valve, the other end of the liquid conveying pipe is provided with a cold water jacket, the interior of the cold water jacket is fixedly connected with a heat insulation pad, the interior of the freezing mechanism is fixedly connected with a freezing liquid tank, and the bottom end of the freezing liquid tank is connected with an infusion pump through a first pipeline; one side of the freezing liquid tank is connected with a second pipeline in a sealed mode, the bottom end of the freez