Dosing device for sewage treatment tank

The utility model relates to the technical field of sewage treatment, and discloses a dosing device for a sewage treatment tank, which is characterized in that a stirring component is arranged on the upper surface of a dosing cover between a first feed port and a second feed port; the stirring assembly comprises a driving motor mounted on the upper surface of the dosing cover, the driving end of the driving motor is connected with a rotating rod, the rotating rod is sleeved with a connecting sleeve, connecting rods are symmetrically arranged on the two sides of the connecting sleeve, and first mixing rods are arranged on the lower surfaces of the connecting rods; a mixing assembly is arranged in the dosing box, and a stabilizing assembly is arranged on the lower surface of the base. A driving motor works to enable a rotating rod to rotate, during rotation, a first mixing rod mixes chemicals in a chemical adding cylinder, after mixing, the chemicals enter a chemical adding box through a connecting pipe, a seco