Seawater purification reverse osmosis device

The utility model discloses a seawater purification reverse osmosis device, and relates to a reverse osmosis device. The seawater purification reverse osmosis device comprises a raw sweater inlet end, a quartz sand filter, an activated carbon filter, a first-stage precise filter, a second-stage precise filter, an RO membrane filter, a product water tank as well as an anti-corrosion anti-scaling system and a chemical washing device, wherein the quartz sand filter, the activated carbon filter, the first-stage precise filter, the second-stage precise filter and the RO membrane filter are used for filtering raw seawater stage by stage; the anti-corrosion anti-scaling system can ensure the filtration effect; the quartz sand filter is high in filtration precision and can be used for effectively eliminating gel particles and macromolecule organisms; the activated carbon filter is used for adsorbing free chlorine in water and has a relatively high removal rate for organic matters and chroma; the first-stage precise filter and the second-stage precise filter are used for further filtering the raw seawater so as to filter impurities such as germs, microorganisms and colloidal materials which are relatively small in size, so that the raw seawater can meet the standard to enter an RO membrane for filtration.