Impurity purification device of air separation equipment

The utility model discloses an impurity purification device of air separation equipment, which relates to the technical field of air purification and comprises a main body, a filter screen replacement port is arranged outside the main body, the upper end and the lower end of the filter screen replacement port are respectively provided with a drawing plate, and an impurity storage chamber is arranged outside the main body. And the top of the impurity storage chamber is connected with an air pipe. According to the utility model, the filter cartridge, the impurity output plate, the gas filter screens, the cleaning plate, the shaft rod and the rotating motor are arranged, in the impurity purification process, dust-containing gas passes through the multiple layers of gas filter screens in the filter cartridge to filter impurities successively, and meanwhile, the cleaning plate on the shaft rod is driven by the rotating motor to rotate, so that the dust-containing gas is purified. And impurities on the surface of t