Reverse osmosis membrane structure, filter element and water purifier

Abstract

The invention provides a reverse osmosis membrane structure, a filter element and a water purifier, wherein the reverse osmosis membrane structure comprises a central tube, the central tube comprisesa concentrated water section and a pure water section which are isolated, the sidewall of the concentrated water section is provided with a concentrated water inlet, a concentrated water outlet is formed at one end of the concentrated water section away from the pure water section, the sidewall of the pure water section is provided with a central tube pure water inlet, and a central tube pure water outlet is formed in one end of the pure water section away from the concentrated water section. A reverse osmosis membrane assembly comprises a reverse osmosis membrane that is wound around the central tube to form a raw water flow channel and a pure water flow channel. One end of the raw water flow channel away from the central tube is provided with a first raw water inlet. A raw water outlet of the raw water flow channel is communicated with the concentrated water inlet. A pure water outlet of the pure water flow channel is communicated to the central tube pure water inlet. The increase ofthe raw water flow channel is achieved, the raw water comes in and goes out straightly, and the cross flow velocity of the reverse osmosis membrane is higher than that of ordinary membrane elements,the concentration polarization of the membrane surface can be effectively reduced, the membrane surface structure is improved, and the service life of the filter element is prolonged.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a reverse osmosis membrane structure, a filter element and a water purifier. Background technique [0002] At present, drinking water filters on the market generally adopt reverse osmosis RO membrane filtration structure, which can filter inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses and other impurities in raw water. Therefore, the reverse osmosis RO membrane filtration structure is the core component of the drinking water filter, and the filtration effect of the drinking water filter is directly related to the filtration effect of the reverse osmosis RO membrane filtration structure. [0003] Chinese patent document CN204625265U discloses a reverse osmosis membrane structure that improves the desalination rate and flux of the membrane, including a central tube and a reverse osmosis filter membrane. The reverse osmosis filter membrane is wound to f...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of easy scaling on the surface of the reverse osmosis membrane structure and short life of the filter element in the prior art, so as to provide a reverse osmosis membrane that can delay the scaling rate and prolong the service life of the filter element. Membrane structure, filter element and water purifier

Images