Reverse osmosis composite filter assembly

Abstract

The invention discloses a reverse osmosis composite filter element assembly, which comprises a mounting head, a shell and a reverse osmosis filter core located in the shell, the mounting head is located at the end of the shell, and the reverse osmosis filter core includes a central tube and a reverse osmosis membrane wound on the central tube , the reverse osmosis membrane forms a raw water water guide layer and a pure water water guide layer, and the pure water water guide layer communicates with the first flow channel in the central pipe, and is characterized in that it includes: a raw water inlet, a pure water outlet and a concentrated water outlet , the raw water inlet and concentrated water outlet are located on the installation head, the pure water outlet is located on the shell and communicates with the end of the reverse osmosis filter element away from the installation head; the rear purification filter element is located at the end of the reverse osmosis filter element and the bottom wall of the shell Between them, including the water inlet side and the water outlet side, the first flow channel communicates with the pure water water guide layer and the water inlet side of the rear purification filter element, and the water outlet side of the rear purification filter element communicates with the pure water outlet. The invention reduces the number of filter elements in the water purifier and simplifies the layout of pipelines between the filter elements.

Description

technical field [0001] The invention relates to a reverse osmosis composite filter element assembly, which belongs to the technical field of water treatment. Background technique [0002] With the improvement of people's requirements for drinking water quality, pure water systems are gradually entering the drinking water system of every household. Existing reverse osmosis water purifiers generally have four stages of filtration, and each stage of filtration has a filter element. The first-stage PP cotton filter element mainly filters large particles of impurities; the second-stage pre-activated carbon filter element mainly absorbs impurities such as color and odor, colloid and residual chlorine, and protects the rear-end reverse osmosis filter element; the third-stage reverse osmosis filter element can Organic matter, colloid, bacteria, viruses and other impurities in raw water are filtered, especially for inorganic salts, heavy metal ions and other impurities with extremel...

AI Technical Summary

Problems solved by technology

[0003] Aiming at a series of problems caused by many filter elements in the reverse osmosis water purifier, such as large volume, complex pipeline layout between filter elements, complicated filter element life monitoring and reminder, and complicated filter element replacement, the present invention provides a reverse osmosis composite filter element assembly, It includes an installation head, a casing and a reverse osmosis filter element located in the casing, the installation head is located at the end of the casing, the reverse osmosis filter element includes a central tube and a reverse osmosis membrane wound on the central tube, and the reverse osmosis membrane is formed inside The raw water aquifer layer and the pure water aquifer layer, the pure water aquifer layer communicates with the first flow channel in the central pipe, and is characterized in that it includes: a raw water inlet, a pure water outlet and a concentrated water outlet, the raw water Both the water inlet and concentrated water outlet are located on the installation head, and the pure water outlet is located on the casing and communicates with the end of the reverse osmosis filter element away from the installation head; the rear purification filter element is located at the end of the reverse osmosis filter element and the bottom wall of the casing Between them, including the water inlet side and the water outlet side, the first flow channel communicates with the pure water water guide layer and the water inlet side of the post-purification filter element, and the water outlet side of the post-installation purification filter element communicates with the pure water outlet

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