Roll type reverse osmosis membrane element

Abstract

The invention provides a roll type reverse osmosis membrane element. The element comprises a central water-producing pipe having a sealing end and provided with a plurality of pure water collecting through holes in the pipe, and at least one group of water purifying membranes wound on the central water-producing pipe, wherein the water purifying membrane is formed by laminating a reverse osmosis membrane, a pure water guiding net and a water inlet guiding net; the water purifying membrane at the membrane element water outlet is parallel and level to the central water-producing pipe in the length direction of the membrane element, and a mechanism for placing a central pipe sealing ring and limiting the central pipe sealing ring is arranged in the central water-producing pipe close to the membrane water outlet. The sealing mode in the membrane provided by the invention can well solve the problem that the service life of the membrane element cannot achieve a predicated value due to the ageing, falling and breaking of the central pipe sealing ring R. Furthermore, the membrane element and a water purifier containing the membrane element can develop to the orientation of small volume.

Description

technical field [0001] The invention belongs to the technical field of water purification treatment, and relates to a reverse osmosis membrane element for removing impurities such as sediment, silt, colloid, microorganisms, viruses, organic matter and inorganic salts in water, in particular to a roll-type reverse osmosis membrane element. Background technique [0002] At present, the known roll-type reverse osmosis membrane element includes a central water production pipe with a sealed end (at the water inlet end of the membrane element) and a plurality of pure water collection through holes on the pipe, and a central water production pipe wound on the central water production pipe. At least one set of water purification membranes, the water purification membranes are composed of reverse osmosis membranes, pure water diversion nets, and water inlet diversion nets; the reverse osmosis membranes are folded to form an inlet water flow The water inlet diversion net is located in...

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Problems solved by technology

Furthermore, the present invention also provides a membrane element with a shorter water purification membrane by changing the structure of the membrane element, which is used to slow down the easy fouling on the surface of the existing roll-type reverse osmosis membrane element, overcome the pollution problem of the membrane element, and prolong the life of the membrane element. The service life of the membrane element is greatly reduced, and the volume of the membrane element is greatly reduced, saving more space for the design of the water purifier product

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