The invention discloses a spiral multipage
reverse osmosis membrane which is short in runner, low in resistance, high in flowing speed, high in water yield and high in membrane
utilization rate. The spiral multipage
reverse osmosis membrane comprises a center
pipe (1), at least two membrane bags (2) and outer end
water collection pipes (3), wherein the quantity of the outer end
water collection pipes (3) is consistent with that of the membrane bags (2); a plurality of water inlets (4) are formed in the side surface of the outer end
water collection pipes (3); the inner ends of the membrane bags (2) are fixed on the center
pipe; the respective membrane bags (2) are tightly wound in the same direction in sequence along the center
pipe (1), thus forming a cylinder consisting of a plurality of
layers of membrane bags; the outer ends of the membrane bags (2) cover the outer end water collection pipes (3) inside, and
raw water enters the membrane bags (2) through
reverse osmosis, and is collected into the outer end water collection pipes (3) through the water inlets (4); pure water is discharged from the end parts of the outer end water collection pipes (3); and the pure water in the membrane bags (2) flows spirally from the center to the outer side. The spiral multipage reverse
osmosis membrane can be widely applied to the field of
clean water.