Sodium chlorite liquid purification device

A sodium chlorite liquid purification device relates to the technical field of purification devices and comprises a kettle body, a partition plate is horizontally and fixedly connected in the kettle body, an inner cavity of the kettle body is divided into a reaction area and a purification area from top to bottom through the partition plate, a liquid guide hole for communicating the reaction area with the purification area is formed in the partition plate, and an on-off plate for connecting and disconnecting the liquid guide hole is rotatably arranged on the lower surface of the partition plate. A liquid distribution assembly and a gas distribution assembly are arranged in the reaction area from top to bottom, and a liquid return pipeline for guiding liquid in the purification area into the reaction area is arranged outside the kettle body. The sodium chlorite purification device solves the problems that in the traditional technology, in the preparation process of sodium chlorite, reaction liquid and chlorine