Self-sealing liquid adding system

The utility model provides a self-sealing liquid adding system, which belongs to the technical field of chemical production and comprises a sealing liquid adding rod, a liquid adding pump and an automatic air intake and exhaust device. One end of the sealed liquid adding rod is arranged in the liquid preparation barrel in a sealed manner, the other end of the liquid adding rod is arranged in the liquid-to-be-added medicine barrel in a sealed manner, and the liquid adding pump is configured to suck a chemical reagent from the liquid preparation barrel into the liquid-to-be-added medicine barrel through the sealed liquid adding rod; and the automatic air intake and exhaust device is arranged on the to-be-added liquid medicine barrel. According to the liquid adding pump, a chemical reagent is sucked into a liquid-to-be-added medicine barrel from a liquid preparation barrel through a sealed liquid adding rod, and the problems that in the working process of the liquid adding pump, air in the liquid-to-be-added med