Exopolysaccharide fermentation extraction device and fermentation extraction method

The invention discloses an extracellular polysaccharide fermentation and extraction device and a fermentation and extraction method, the extracellular polysaccharide fermentation and extraction device comprises a fermentation device and an extraction device, the fermentation device comprises a fermentation tank, and the fermentation tank is used for carrying out fermentation reaction inside to generate extracellular polysaccharide; the extraction device comprises an extraction tank, the extraction tank is communicated with the fermentation tank, a plurality of filtering structures are arranged in the extraction tank, the filtering structures are communicated, each filtering structure comprises a filtering chamber and a liquid storage chamber, the filtering chamber is arranged above the liquid storage chamber, and the liquid storage chamber is arranged above the liquid storage chamber. And a permeation structure is arranged between the filtering chamber and the liquid storage chamber in the same filtering stru