Fermented grain fermentation tank

The invention discloses a fermented grain fermentation tank, and belongs to the field of wine brewing equipment, the fermented grain fermentation tank comprises a base, a support and a tank body are arranged on the base, the tank body comprises a shell and an inner tank, the inner tank is movably arranged in the shell, and a water outlet is formed in the bottom wall of the shell; the device further comprises a spin-drying mechanism. Under the action of the spiral plate, the top plate and the impact rod, the impact rod retracts into the sleeve and impacts the side wall, close to one side of the inner tank, of the sleeve; impact force provided by the impact rod is transmitted to the top plate and residues on the top wall of the top plate, and the residues move along the top wall of the top plate and fall into the collecting frame, so that the residues which are in contact with the side wall of the inner tank and have relatively low surface water content can be timely transferred; the effects of ensuring that th