Vitamin B2 fermentation device

The utility model relates to the field of fermentation and separation equipment, in particular to a vitamin B2 fermentation device which comprises a machine body, a sealing cover is arranged at the top of the machine body, a fermentation cylinder is arranged on the upper portion of an inner cavity of the machine body, a liquid outlet pipe is connected to the bottom end of the fermentation cylinder, and a precipitation mechanism is installed in the machine body. The precipitation mechanism comprises a feed liquid barrel fixedly installed in the machine body and a through pipe arranged at the bottom end of the feed liquid barrel, the through pipe penetrates through the feed liquid barrel and the machine body and extends to the outside, a driving mechanism is rotationally installed on the inner side of the feed liquid barrel, and a screening mechanism is arranged on the inner side of the feed liquid barrel; the screening mechanism comprises an elastic telescopic filter screen movably arranged on the inner side o