Reverse osmosis membrane filtering device

A reverse osmosis membrane filtering device, comprising:

• a container having an inlet of unprocessed water, an outlet of concentrate water, and at least one permeate-eater outlet;
• a water-collecting member including a plurality of water collecting pipes, and having a plurality of sections each of which extends inside the container and has a plurality of water collecting apertures;
• at least one filter assembly disposed around the plurality of sections, the at least one filter assembly including a filter member comprising a reverse osmosis membrane, an axial direction channel extending along the plurality of water collecting pipes, and a water collecting channel extending toward the plurality of water collecting apertures;
• at least one seal member disposed inside the water-collecting member;
• at least one insertion tube inserted inside at least one water collecting pipe of the plurality of water collecting pipes and defining two permeate-water channels corresponding to two of the plurality of sections between the water-collecting member and the at least one insertion tube and inside the at least one insertion tube, with the at least one seal member sealing a gap between the at least one water collecting pipe and the at least one insertion tube;
• and
• a pressure adjusting device configured to increase a pressure of one of the two permeate-water channels to a pressure higher than that of another one of the plurality of permeate-water channels.