Sewage treatment tank capable of continuously working

The utility model discloses a sewage treatment tank capable of continuously working, which comprises a sedimentation tank, a stirring tank and a sewage treatment tank which are sequentially communicated, an electric stirrer is arranged in the stirring tank, a stirring pipe is arranged at a water inlet, communicated with the sedimentation tank, of the stirring tank, the stirring pipe comprises a plurality of movable joints, and the movable joints are connected with the electric stirrer. A flat plate is arranged on the outer wall of each movable joint in the axial direction, the movable joints are connected in series through a hose, a plurality of floating balls are arranged on the outer wall of the hose, the gravity borne by the hose is equal to buoyancy, and the gravity borne by the movable joints and the flat plates is equal to buoyancy. The utility model aims to provide the sewage treatment tank capable of continuously working, and the stirring pipe can also perform auxiliary stirring under the condition of