Oxygen enrichment preparation device adopting low-pressure membrane method

The utility model relates to an oxygen enrichment preparation device adopting a low-pressure membrane method, which can effectively solve the problems of high production and operation costs and low oxygen preparation efficiency. The technical scheme is that the device comprises a low-pressure blower, oxygen-enriched membrane components and a low-pressure vacuum pump, wherein a plurality of oxygen-enriched membrane components are connected onto a pipeline between an air outlet of the low-pressure blower and an air inlet of the low-pressure vacuum pump in parallel, and a permeable oxygen outlet pipe is mounted at an air outlet of the low-pressure vacuum pump. The oxygen enrichment preparation device adopts a method of addition of the oxygen-enriched membrane components, thereby effectively reducing the production and operation costs, improving the production efficiency, and having remarkable social and economic benefits.