Reverse osmosis device with high recovery rate and high desalination rate

The invention relates to the technical field of reverse osmosis for improving desalination rate and saving water, and specifically relates to a reverse osmosis device with high recovery rate and highdesalination rate. The reverse osmosis device comprises a raw water tank, wherein a lower end of the raw water tank is connected with a raw water pump through a guide pipe; the other end of the raw water pump is connected with an upper end of a microfiltration device; a lower end of the other end surface of the microfiltration device is connected with a high-pressure pump. The invention has beneficial effects that the reverse osmosis device provided by the invention realizes multistage filtration recovery by arranging stepped filtration of a multistage reverse osmosis host machine to further achieve a purpose of high recovery rate, and improves the desalination rate by repeatedly desalinating produced water so that water in the raw water tank becomes better and better, the conductivity ofthe produced water in a fi