Wine fermentation device and fermentation process thereof

The invention discloses a wine fermentation device and a fermentation process thereof in the technical field of wine brewing equipment, and the wine fermentation device comprises a pressing cap spraying structure, a pressing plate is arranged in the pressing cap spraying structure, a spraying execution mechanism is arranged on the pressing plate in a penetrating manner, the spraying execution mechanism is provided with a bevel gear screw, and the bevel gear screw is sleeved with a screw shell in a sealing manner; the screw shell is sleeved with a rotating shell, the upper portion of the bevel gear screw is meshed with a first bevel gear shaft, a second bevel gear is arranged below the first bevel gear shaft, the first bevel gear shaft and the second bevel gear shaft are meshed with a gear shaft, and the gear shaft is meshed with a fixing rack of the structural shell. A spraying structure and a pressing cap are linked, a pressing plate is connected through a gear and a rack when moving downwards, the action of