Lifting device for filter shell of fermentation tank

The utility model relates to a fermentation tank filter shell lifting device which comprises a first mounting plate and a second mounting plate, a mounting frame is arranged at the top of the second mounting plate, a plurality of lower fermentation tank filter shells are fixedly mounted on the side face, facing a fermentation tank, of the mounting frame, and upper fermentation tank filter shells are fixedly mounted at the tops of the lower fermentation tank filter shells. Two control mechanisms for limiting the fermentation tank filter shell are symmetrically arranged on two sides of the fermentation tank filter shell; after the corresponding fermentation tank filter shell is pulled by the winding tool to rise to a set height, and when a second magnet moves to a position corresponding to a first magnet, due to mutual repulsion between the second magnet and the first magnet, a rotating plate rotates, a tension spring extends, the bottom of the fermentation tank filter shell is blocked by a baffle, and the bott