Chemical dosing device

The utility model discloses a dosing device which comprises a powder hopper, a discharging auger assembly is movably installed in the powder hopper, a discharging barrel is installed at the bottom of the powder hopper, meanwhile, a dosing opening is formed in the bottom of the discharging barrel and installed above a sewage treatment pool, and fixing bases are welded to the two sides of the bottom of the powder hopper. And a supporting frame is installed at the bottom of the fixing base, the bottom of the discharging barrel is connected with a rectangular discharging frame on the quantity control adding assembly, and the bottom of the rectangular discharging frame is opposite to the medicine adding opening. According to the dosing device, the electric push rod promotes the support seat to withdraw, the unloading plate inclines, and the medicine powder on the unloading plate enters the sewage treatment tank through the dosing port, so that the quantitative dosing work of the sewage treatment tank is completed,