Spiral-type aeration stirrer

The utility model discloses a spiral-type aeration stirrer. The spiral-type aeration stirrer comprises a submersible motor with a hollow stirring shaft, a fixing flange with one side used for installing the submersible motor, a bearing seat installed at one side of the submersible motor and provided with a bearing, an outer cover installed at the other side of the bearing seat, a flow guide cover fixed on the outer cover, a stirring impeller driven by the hollow stirring shaft, and a shearing propeller sleeved at the tail end of the hollow stirring shaft, wherein the bearing is an oil-containing rolling bearing. The spiral-type aeration stirrer disclosed by the utility model adopts the oil-containing rolling or sliding bearing, is protected in an oil chamber by a sealing element, reliable in running, small in resistance during the rotation of the stirring shaft, increased in power efficiency, free from blockage and winding, low in working noise, and long in service life, and does not need to replace and maint