A roll type reverse osmosis membrane element

Abstract

The present invention provides a roll-type reverse osmosis membrane element, which includes a central water production pipe with a sealed end and a plurality of pure water collection through holes on the pipe, and at least one set of water purification membranes wound on the central water production pipe The water purification membrane is composed of a reverse osmosis membrane, a pure water diversion net, and an inflow diversion net; at the outlet end of the membrane element, the water purification diaphragm and the central water production pipe are in the length direction of the membrane element The top is flush, and a mechanism for placing the central tube sealing ring and limiting the central tube sealing ring is provided inside the central water production pipe near the water outlet end of the membrane element. The internal sealing method of the membrane element of the present invention can well solve the problem that the service life of the membrane element cannot reach the expected value due to the aging, falling off or rupture of the sealing ring R of the central pipe. In addition, the present invention also enables the development of the membrane element and the water purifier containing the membrane element in the direction of downsizing.

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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