psa oxygen generator based on the zeolite adsorbent by pressure adsorption, desorption antihypertensive principle of adsorbing and releasing nitrogen from air, thus separating oxygen automation equipment. Zeolite molecular sieve is processed by a special pore type treatment process. The spherical particle adsorbent with micropores on the surface and inside is white. Its pore type characteristics enable it to realize the kinetic separation of 02 and N2. The separation effect of zeolite molecular sieve on 02 and N2 is based on the small difference in the dynamic diameter of the two gases. N2 molecules have a faster diffusion rate in the micropores of zeolite molecular sieve, and O2 molecules have a slow diffusion rate. The diffusion of water and CO2 in compressed air is not much different from that of nitrogen. The final enrichment from the adsorption tower is oxygen molecules.