Yogurt fermentation tank

The utility model relates to a yoghourt fermentation tank. Characterized in that it is characterized in that it comprises, the device comprises a fermentation tank body, a motor and a speed reducer, the motor and the speed reducer are arranged at the top of the fermentation tank body; motor and speed reducer connection, a rotating shaft is arranged on the speed reducer; the rotating shaft is arranged in the fermentation tank body; stirring teeth are arranged at the upper part of the rotating shaft; three stirring blades are arranged at the lower part of the rotating shaft at equal intervals; wherein the stirring blades are in right-angle connection with the rotating shaft, the top of the fermentation tank body is provided with a feed port, the bottom of the fermentation tank body is provided with a discharge pipe and a blow-off pipe, the upper part of the fermentation tank body is provided with a fermentation liquor drainage pipe and a breathing pipe, and the pipe wall of the fermentation tank body is provide