Seed fermentation tank for yeast production

The utility model relates to the technical field of yeast production, in particular to a seed fermentation tank for yeast production, which comprises a fermentation tank, a plurality of air inlet pipes for inputting air into fermentation liquor are mounted in the tank body, and a plurality of air nozzles are mounted on the air inlet pipes; a fan for conveying airflow is mounted above the tank cover, connecting plates with air holes are mounted at the upper end and the lower end of the fan, and a heating box is mounted on the bottom surface of the connecting plate below the fan; a plurality of air inlet pipes are arranged in a fermentation tank, clean air filtered by a filter screen is input into the air inlet pipes by a fan, then the air is input into fermentation liquor in the fermentation tank through a plurality of air nozzles, bubbles are formed in the fermentation liquor after the air is sprayed out through the air nozzles, and the bubbles are matched with a stirring rod to stir the fermentation liquor i