The utility model belongs to the technical field of
fermentation defoaming, and particularly relates to a
fermentation defoaming device which comprises a
fermentation tank, the inner wall of the fermentation tank is fixedly connected with two limiting arc-shaped plates, the two limiting arc-shaped plates are rotatably provided with a
rotating disc in a matched mode, the
rotating disc is provided with a rod hole, a foam rod is inserted into the rod hole in a penetrating mode, the bottom end of the foam rod is fixedly connected with a foam frame, a thin film is fixed into the foam frame, the foam rod is sleeved with a first top fixing
lantern ring, and the first top fixing
lantern ring is fixedly connected with the bottom end of the foam frame. A first screw hole is formed in the first top fixing
lantern ring, a first locking bolt is inserted into the first screw hole in a penetrating mode, the end of the first locking bolt abuts against the outer surface of the foam rod, a first
electrode plate is installed on the outer circumferential face of the first top fixing lantern ring, and a vertical rod is fixedly connected to the
rotating disc. In the fermentation process, not only can the rising of foam be automatically identified, but also the defoaming operation can be automatically carried out, meanwhile, the defoaming effect is improved, the accumulation of the foam is avoided, and the fermentation effect is ensured.