Multimembrane leaf roll formula film element

The utility model discloses a multimembrane leaf roll formula film element, include: the center tube, flow net is led to a plurality of first pure water, flow net stagger in proper order predetermined distance cascade arrangement and first are led to a plurality of first pure water flow net was led to first pure water one end with the center tube is connected, all the other flow net was led to first pure water one end respectively according to the predetermined distance is led flow net rather than previous corresponding separately first pure water and is connected, reverse osmosis membrane piece subassembly, adjacent two first pure water is led and is provided with the one deck between the flow net respectively reverse osmosis membrane piece subassembly. The technical scheme of the utility model need not the switching center pipe and realize multimembrane leaf reverse osmosis membrane technology's preparation when changing the membrane number of sheets to realized one tub multi -purpose, not only guaranteed the intensity of center tube, simplified the system of book technology moreover.