Eight tube molecular sieve adsorptive bed

The utility model discloses a eight-pipe molecular sieve adsorption bed which comprises a molecular sieve adsorption column, an oxygen storage tank and an air inlet storage chamber; wherein the molecular sieve adsorption column is the eight-pipe structure, the top of the eight-pipe molecular sieve adsorption bed is provided with an upper end plate, the two sides in the middle are two groups, each group is the four-pipe molecular sieve adsorption column, the upper part in the middle is the oxygen storage tank, the lower part in the middle is the air inlet storage chamber, the bottom is a base, the oxygen outlet is arranged on the lower part of the oxygen storage tank, the air inlet and the exhaust opening are respectively arranged on the front side and the back side, the eight-pipe molecular sieve adsorption column, the upper end plate, the oxygen storage tank, the base and the air inlet storage chamber are connected as a whole. The utility model has the advantages of that the oxygen storage tank, the eight-pipe adsorption column, the air inlet storage chamber and the air rotary reversing valve are connected as a whole through the two groups of eight-pipe molecular sieve adsorption bed, which has the compact structure and is conducive to the miniaturization of products and suitable for the automobile; the eight-pipe molecular sieve generates oxygen in turn, which makes an oxygenerator have more uniform oxygen outlet; the diameter of each pipe is smaller, which lowers the exhaust noise; the air rotary reversing valve continuously rotates, which not only has the uniform air supply, but also avoids the electromagnetic valve's high failure rate caused by the frequent on-off.