Fermentation tank stirrer fixing device

The utility model discloses a fermentation tank stirrer fixing device which comprises a stirring shaft, the middle section and the lower section of the stirring shaft are positioned with a barrel through a fixing device, the fixing device comprises a bearing seat, main beams and an oblique beam, the inner side of the bearing seat is sleeved on the stirring shaft, two sides of the bearing seat are respectively connected with the main beams, and the two main beams are arranged in parallel. The two main beams are connected through a plurality of first connecting arms arranged at intervals, the two ends of the main beams are connected with the barrel, and the main beams are connected with the inner wall of the barrel on the same side through oblique beams. According to the utility model, acting forces from different directions of the stirring shaft are dispersed through the oblique beam, vibration is reduced, and meanwhile, the device does not have dead angle points difficult to clean and is convenient to clean.