Papermaking sewage treatment device capable of automatically and quantitatively feeding chemicals

The utility model discloses a papermaking sewage treatment device capable of automatically and quantitatively feeding chemicals, a feeding mechanism comprises a storage box, a spiral feeding blade, a feeding driving water wheel and a feeding transmission mechanism, the storage box is fixedly mounted on a mounting frame, and a feeding pipeline is arranged at the bottom of the storage box; the spiral feeding blade is inserted into the feeding pipeline and matched with the storage box in a rotating mode, the feeding driving water wheel is installed in the water storage box in a rotating mode and is close to the water inlet, and the feeding transmission mechanism is connected between the spiral feeding blade and the feeding driving water wheel in a transmission mode. When the water storage tank discharges water, the feeding driving water wheel rotates, the spiral feeding blade is driven to rotate to feed the flocculant into the water storage tank, a driving motor is not needed for driving, the structure is simple