A pure water membrane filtration device

By introducing the automatic alternation of primary and secondary filter cartridges in the water filtration device, the problem of inflexible filter cartridge replacement is solved, achieving automatic filter cartridge switching and continuous water use, thus ensuring high-quality water output.

CN224430446UActive Publication Date: 2026-06-30QINGDAO FULHAM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO FULHAM TECH CO LTD
Filing Date
2025-09-04
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The filter cartridges in existing water filtration devices are not flexible enough to replace, causing them to malfunction at the end of their service life and affecting the continuity of water use.

Method used

Design a pure water membrane filtration device that uses a primary filter cartridge and a secondary filter cartridge alternately, and achieves automatic switching through a controller, solenoid valve and water pressure sensor to ensure flexible replacement of filter cartridges and continuous water supply.

Benefits of technology

It enables automatic replacement of filter cartridges, avoiding water stagnation caused by blockage of a single filter cartridge, ensuring continuous water supply, and comprehensively removing impurities and harmful substances from the water through a five-stage filtration system, thereby improving water quality.

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Abstract

This utility model discloses a pure water membrane filtration device, belonging to the field of pure water filtration technology, aiming to solve the technical problem of insufficient flexibility in replacing filter elements in existing water filtration equipment. The pure water membrane filtration device includes a housing, within which six filter elements are arranged: a primary filter element, a secondary filter element, a secondary filter element, a tertiary filter element, a quaternary filter element, and a quinary filter element. The primary and secondary filter elements are of the same model and perform the same level of filtration. The filtration precision of the primary or secondary filter element increases progressively from the secondary, tertiary, quaternary, and quinary filter elements. By setting up primary and secondary filter elements, this pure water membrane filtration device can automatically switch to the secondary filter element when the primary filter element becomes clogged, avoiding water supply interruptions caused by the clogging of a single filter element. This provides users with ample time to replace filter elements and ensures continuous water supply.
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