Title:
MULTI-STAGE REVERSE-OSMOSIS FILTRATION SYSTEM BASED ON WHEATSTONE BRIDGE MEASUREMENT PRINCIPLE
Document Type and Number:
WIPO Patent Application WO/2017/152314
Kind Code:
A1
Abstract:
Provided is a multi-stage reverse-osmosis filtration system based on the Wheatstone-bridge measurement principle, comprising a drive mechanism, a filtration mechanism, a storage mechanism, a measurement mechanism, and a central control device; the drive mechanism, filtration mechanism, and storage mechanism are electrically connected to the central control device; the drive mechanism comprises a primary high-pressure pump (1), and a secondary high-pressure pump (4); the filtration mechanism comprises a primary reverse-osmosis unit (2) and a secondary reverse-osmosis unit (5); by means of five reverse-osmosis components in the primary reverse-osmosis unit (2), the multi-stage reverse-osmosis filtration system performs primary filtration of water, then, by means of three reverse-osmosis components in the secondary reverse-osmosis unit (5), performs secondary filtration of the water; the two-stage filtration ensures the reliability of the filtered water; in addition, a follower circuit mainly using a second operational amplifier is added to the flow-rate measurement circuit, improving the isolation of the measurement circuit and preventing interference to the system, thus improving the reliability of the system.
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Inventors:
MA JUN (CN)
Application Number:
PCT/CN2016/075726
Publication Date:
September 14, 2017
Filing Date:
March 05, 2016
Export Citation:
Assignee:
MA JUN (CN)
International Classes:
B01D61/08; C02F1/44
Foreign References:
| CN105771655A | 2016-07-20 | |||
| CN203241755U | 2013-10-16 | |||
| CN202398293U | 2012-08-29 | |||
| CN105157867A | 2015-12-16 | |||
| CN203419806U | 2014-02-05 | |||
| US4587518A | 1986-05-06 | |||
| CN103408152A | 2013-11-27 | |||
| US20100051519A1 | 2010-03-04 |
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