Oxygen purification device with good applicability and use method thereof

The invention provides an oxygen purification device with good applicability and a use method thereof, and relates to the technical field of oxygen purification, the oxygen purification device comprises a base, a pressure swing adsorber is fixedly mounted at the upper end of the base, an air inlet pipe is fixedly connected to the side face of the pressure swing adsorber, and a filter box is arranged at the upper end of the pressure swing adsorber; two-to-one gas pipes are fixedly mounted on the two sides of the filter box, the interior of the filter box is divided into two parts by a partition plate, and meanwhile, the two-to-one gas pipes are additionally arranged on the two sides of the filter box, so that gas entering the filter box can be divided into two directions, and the gas in each direction can pass through a molecular sieve; when the molecular sieve is replaced, the air valve can be used for closing the channel on the side to be replaced, so that people can take down the cover plate to replace the