Reverse osmosis composite filtering core assembly

Abstract

The invention discloses a reverse osmosis composite filtering core assembly, which comprises an installing head, an outer shell and a reverse osmosis filtering core positioned in the outer shell, wherein a first water flowing gap is arranged between the reverse osmosis filtering core and the outer shell, the installing head is positioned at the end portion of the outer shell, and is provided witha raw water inlet, a pure water outlet and a concentrated water outlet, a rear-lying purification unit is arranged between the reverse osmosis filtering core and the installing head, a center pipe penetrates through the rear-lying purification unit, and then is communicated to the pure water outlet, one of the raw water inlet and the concentrated water outlet is communicated to one end, close to the installing head, of the reverse osmosis filtering core through a first flow channel, a second water flowing gap is arranged between the rear-lying purification unit and the outer shell, and the other one of the raw water inlet and the concentrated water outlet is communicated to one end, away from the installing head, of the reverse osmosis filtering core through the first water flowing gap andthe second water flowing gap. With the reverse osmosis composite filtering core assembly of the present invention, the number of the filtering cores in the water purifier is reduced, and the pipelinelayout between the filtering cores is simplified.

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 extrem...

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. There is a first water gap between the reverse osmosis filter element and the casing. The installation head is located at the end of the casing, and a raw water inlet is provided on the installation head. , a pure water outlet and a concentrated water outlet, the reverse osmosis filter element includes a central tube and a reverse osmosis membrane wound on the central tube, and a raw water guide layer and a pure water guide that communicates with the central tube are formed in the reverse osmosis membrane The water layer is characterized in that it includes: a rear purification unit, located between the reverse osmosis filter element and the installation head, and the central pipe communicates with the pure water outlet through the rear purification unit; the first flow channel communicates with the raw water inlet One of the water inlet or concentrated water outlet and the end of the reverse osmosis filter element near the installation head; the second water gap is located between the rear purification unit and the shell, and the other of the raw water inlet or concentrated water outlet passes through the second pass The water gap and the first water gap communicate with the end of the reverse osmosis filter away from the installation head

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