Automatic dosing and pollution discharge equipment for circulating cooling water system

The invention discloses an automatic dosing and sewage discharging device for a circulating cooling water system, which comprises a rack, a reaction tank is fixedly arranged on the rack and is used for dosing sewage for reaction and precipitating and collecting impurities in the sewage, in addition, a precipitation and sewage discharging assembly is arranged below the reaction tank, and the precipitation and sewage discharging assembly is arranged below the reaction tank. A precipitation and pollution discharge assembly is arranged below the reaction tank and used for discharging precipitated impurities in the reaction tank, a water storage tank is arranged below the precipitation and pollution discharge assembly and used for collecting and storing treated purified water, a purified water outlet is formed in the lower portion of the water storage tank, and a pollution discharge motor drives a pollution discharge rotating shaft to rotate so as to drive pollution discharge spiral blades to rotate; according to