Single-soldier seawater desalination device capable of adjusting water production and adjusting method

By incorporating an adjustable piston rod structure with an equivalent diameter into the individual seawater desalination unit, and combining this with the area difference between the energy recovery chamber and the pressurization chamber, flexible adjustment of the water production rate is achieved. This solves the adaptability problem of fixed water production design and improves operational convenience and adaptability.

CN122403569APending Publication Date: 2026-07-17CHENGDU DUCHENG ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU DUCHENG ENVIRONMENTAL PROTECTION CO LTD
Filing Date
2026-04-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing individual desalination units have a fixed water production capacity design, which cannot be flexibly adjusted according to actual usage scenarios, resulting in poor adaptability to different needs.

Method used

By setting an adjustable equivalent diameter structure on the piston rod, combined with the effective cross-sectional area difference between the energy recovery chamber and the pressurization chamber, the water production rate can be flexibly adjusted. Two adjustment methods are adopted: sleeve telescopic type and elastic bladder type, which are suitable for different environments.

Benefits of technology

It achieves precise control of water production, meets the needs of multiple scenarios, maintains the effectiveness of energy recovery function, has a compact structure, is easy to operate, and has improved adaptability and reliability.

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Abstract

This invention discloses an adjustable water production capacity desalination device for individual soldiers and its adjustment method, relating to the field of water treatment technology. It includes a pump body, a piston assembly, a reverse osmosis membrane assembly, a reversing valve group, and an operating handle. The piston head divides the pump body's interior into a pressurization chamber and an energy recovery chamber. The concentrate outlet of the reverse osmosis membrane assembly is connected to the energy recovery chamber to recover wastewater pressure energy to assist in pressurization. The piston rod has an adjustable equivalent diameter. By changing the radial projection area of ​​the piston rod within the energy recovery chamber, the difference in effective cross-sectional area between the pressurization chamber and the energy recovery chamber can be altered, thereby controlling the net water production capacity per reciprocating motion. Specifically, a telescopic sleeve or elastic bladder structure is used for adjustment. This invention achieves flexible, stepless adjustment of water production capacity while maintaining the labor-saving function of energy recovery, meeting the drinking water needs of individual soldiers in various scenarios, and is electricity-free and easy to operate.
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