Spiral-wound reverse osmosis membrane elements, filter elements and reverse osmosis water purifiers

Abstract

The invention discloses a spiral-wound reverse osmosis membrane element, a filter element and a reverse osmosis water purifier. The spiral-wound reverse osmosis membrane element includes: a multi-page reverse osmosis membrane group, a central tube group, a first end cover and a reverse osmosis membrane element. The second end cover, the central tube group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, and the plurality of waste water pipes are arranged around the pure water pipe; each reverse osmosis membrane group has a first part located inside the central tube group and a second part located outside the central tube group. Each wastewater pipe and pure water pipe is separated by a first part of a reverse osmosis membrane group; the second parts of a plurality of reverse osmosis membrane groups form a ring surrounding the central tube group. For the surrounding multi-layer membrane components, the first end cap and the second end cap are respectively set on both ends of the central tube group and the multi-page reverse osmosis membrane group; the first end cap or the second end cap is set purely corresponding to the central tube group. Water outlet and waste water outlet. The technical solution of the present invention can improve the recovery rate of raw water and achieve high water saving.

Description

technical field [0001] The invention relates to the technical field of reverse osmosis water purification, in particular to a spiral-wound reverse osmosis membrane element, a filter element and a reverse osmosis water purifier. Background technique [0002] Spiral-wound reverse osmosis membrane elements, also known as spiral-wound reverse osmosis membrane elements, are commonly used elements in water treatment technology. Reverse osmosis selection membrane and diversion net. The central tube is connected with the two ends of the housing through connectors. When in use, the raw water enters the shell from one end of the shell, and under the action of pressure, part of it passes through the reverse osmosis membrane to form water with a lower concentration. After entering the central tube, it flows out from one or both ends of the central tube. This part of water can be called It is used as produced water or pure water; the other part flows out from the other end of the shell...

AI Technical Summary

Problems solved by technology

[0003] In the spiral-wound reverse osmosis membrane element in the prior art, after the raw water is treated, a large part is discharged as waste water, and only a small part becomes pure water, especially the large-flux spiral-wound reverse osmosis membrane element. The proportion of water in the raw water is relatively small, and the recovery rate of raw water is low, resulting in waste of raw water

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