Fermentation tank for biological enzyme fermentation

The fermentation tank comprises a tank body, supporting legs are fixedly connected to the outer edge of the lower end of the tank body, a cover plate is arranged on the top face of the tank body, a rotating motor is vertically fixed to the top face of the cover plate, the output end of the rotating motor is in transmission connection with a rotating shaft, and the rotating shaft penetrates through the top face of the cover plate. The rotating shaft is fixedly connected with the bottom face of the cover plate and extends into the tank body, the bottom face of the rotating motor is fixedly connected with a lifting motor, the output end of the lifting motor is in transmission connection with a guide rod, the tail end of the guide rod is fixedly connected with an inverted U-shaped rod, and the two ends of the U-shaped rod are fixedly connected with inserting blocks. Two brush plates in mirror symmetry are slidably connected to the inner wall of the tank body, an insertion groove is formed in the top face of each