CN108002486B - Water-saving reverse osmosis system and water-saving reverse osmosis water purifier - Google Patents
Water-saving reverse osmosis system and water-saving reverse osmosis water purifier Download PDFInfo
- Publication number
- CN108002486B CN108002486B CN201611165884.1A CN201611165884A CN108002486B CN 108002486 B CN108002486 B CN 108002486B CN 201611165884 A CN201611165884 A CN 201611165884A CN 108002486 B CN108002486 B CN 108002486B
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- China
- Prior art keywords
- water
- reverse osmosis
- booster pump
- filter element
- controller
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 136
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000002351 wastewater Substances 0.000 claims abstract description 41
- 238000010992 reflux Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 description 10
- 238000011045 prefiltration Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011110 re-filtration Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses a water-saving reverse osmosis system and a water-saving reverse osmosis water purifier, wherein the water-saving reverse osmosis system comprises a reverse osmosis filter element, a booster pump assembly and a controller, and the booster pump assembly is connected with the controller; the water inlet of the reverse osmosis filter element is connected with a water inlet pipeline, and the booster pump assembly comprises a first booster pump and a second booster pump which are arranged on the water inlet pipeline; a return pipe is arranged between the first booster pump and the second booster pump, one end of the return pipe is connected to a pipeline between the first booster pump and the second booster pump, and the other end of the return pipe is connected with a waste water outlet of the reverse osmosis filter element. The invention can solve the problem of increased reflux quantity under low water pressure, improves the service performance of the reverse osmosis filter element and prolongs the service life of the reverse osmosis filter element.
Description
Technical Field
The invention relates to the field of water purifiers, in particular to a water-saving reverse osmosis system and a water-saving reverse osmosis water purifier.
Background
The recovery rate is an important performance index of the water purifier, the design of the water purifier directly influences all performances of the whole water purifier, and meanwhile, the energy conservation and environmental protection concepts of the household water purifier are considered, and the current technical trend is to achieve higher recovery rate and reduce the wastewater discharge; at present, when the design of a water-saving reverse osmosis water system is made, some waste water is adopted for backflow, part of waste water generated by a reverse osmosis filter element is backflow to the reverse osmosis membrane, and the rest part is discharged, so that the certain service life of the reverse osmosis membrane is ensured on the premise of meeting the reverse osmosis recovery rate. However, when the water pressure is low, the reflux water of the reflux valve is increased, so that the front depression of the reverse osmosis membrane is reduced, the reverse osmosis water is reduced, and the performance of the reverse osmosis filter element is affected.
Disclosure of Invention
The invention mainly aims to provide a water-saving reverse osmosis system and a water-saving reverse osmosis water purifier, which aim to solve the problem of increased reflux quantity under low water pressure, improve the service performance of a reverse osmosis filter element and prolong the service life of the reverse osmosis filter element.
In order to achieve the above purpose, the water-saving reverse osmosis system provided by the invention comprises a reverse osmosis filter element, a booster pump component and a controller, wherein the booster pump component is connected with the controller; the water inlet of the reverse osmosis filter element is connected with a water inlet pipeline, and the booster pump assembly comprises a first booster pump and a second booster pump which are arranged on the water inlet pipeline; a return pipe is arranged between the first booster pump and the second booster pump, one end of the return pipe is connected to a pipeline between the first booster pump and the second booster pump, and the other end of the return pipe is connected with a waste water outlet of the reverse osmosis filter element.
Preferably, the water-saving reverse osmosis system further comprises a reflux valve connected with the controller, and the reflux valve is arranged on the reflux pipe.
Preferably, the water-saving reverse osmosis system further comprises a plurality of pre-filter elements arranged on the water inlet pipeline, and the pre-filter elements are sequentially connected in series between the booster pump assembly and the water source.
Preferably, the water-saving reverse osmosis system further comprises a plurality of rear filter elements, and the rear filter elements are sequentially connected in series on the pure water output pipeline of the reverse osmosis filter element.
Preferably, the water-saving reverse osmosis system further comprises a preposed TDS detection sensor and a postposed TDS detection sensor which are connected with the controller, wherein the preposed TDS detection sensor is arranged at the water inlet of the reverse osmosis filter element, and the postposed TDS detection sensor is arranged at the pure water outlet of the reverse osmosis filter element.
Preferably, the water-saving reverse osmosis filter element further comprises an alarm electrically connected with the controller.
Preferably, the waste water outlet of the reverse osmosis filter element is also connected with a waste water pipe, the waste water pipe is connected with the return pipe in parallel, and a waste water valve for controlling water flow is arranged on the waste water pipe.
Preferably, the water-saving reverse osmosis system further comprises a pressure sensor for detecting the water pressure on the water inlet pipeline, the controller is electrically connected with the pressure sensor, and the flow of the reflux valve is controlled according to the water pressure detected by the pressure sensor.
Preferably, the water-saving reverse osmosis system further comprises a temperature sensor for detecting the water temperature in the water inlet pipeline, the controller is electrically connected with the temperature sensor, and the flow of the reflux valve is controlled according to the water temperature detected by the temperature sensor.
The invention also provides a water-saving reverse osmosis purifier comprising the water-saving reverse osmosis system as described in any one of the above.
In the technical scheme of the invention, the water-saving reverse osmosis system comprises a reverse osmosis filter element, a booster pump assembly and a controller, wherein the booster pump assembly is connected with the controller; the water inlet of the reverse osmosis filter element is connected with a water inlet pipeline, and the booster pump assembly comprises a first booster pump and a second booster pump which are arranged on the water inlet pipeline; a return pipe is arranged between the first booster pump and the second booster pump, one end of the return pipe is connected to a pipeline between the first booster pump and the second booster pump, and the other end of the return pipe is connected with a waste water outlet of the reverse osmosis filter element. The invention can solve the problem of increased reflux quantity under low water pressure, improves the service performance of the reverse osmosis filter element and prolongs the service life of the reverse osmosis filter element.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a water-saving reverse osmosis system in an embodiment of the invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Water inlet | 6 | Rear filter element |
| 2 | Front filter element | 7 | Reflux valve |
| 3 | First booster pump | 8 | Waste water valve |
| 4 | Second booster pump | 9 | Waste water outlet |
| 5 | Reverse osmosis filter element | 10 | Pure water outlet |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The invention provides a water-saving reverse osmosis system.
Referring to fig. 1, in an embodiment of the present invention, the water-saving reverse osmosis system includes a reverse osmosis filter element 5, a booster pump assembly (not labeled) and a controller (not labeled), wherein the booster pump assembly is connected to the controller, and the controller controls the backflow valve 7 and the booster pump assembly to work; the water inlet of reverse osmosis filter core 5 is connected into water pipeline, the booster pump subassembly is including locating first booster pump 3 and the second booster pump 4 on the water inlet pipeline, first booster pump 3 with set up the back flow between the second booster pump 4, the one end of back flow is connected on the pipeline between first booster pump 3 with the second booster pump 4, the other end of back flow with the waste water exit linkage of reverse osmosis filter core 5.
Specifically, in the water-saving reverse osmosis system of this embodiment, a first booster pump 3 and a second booster pump 4 are disposed between a water source and a water inlet of the reverse osmosis filter element 5, and it is noted that the first booster pump 3 is a main booster pump in the water-saving reverse osmosis system, and the second booster pump 4 is an auxiliary booster pump. The first booster pump 3 is mainly used for the membrane front pressure of the reverse osmosis filter element 5 working normally.
In order to improve the reflux rate of the water-saving reverse osmosis system, a reflux pipe is arranged between the first booster pump 3 and the second booster pump 4, one end of the reflux pipe is connected to a pipeline between the first booster pump 3 and the second booster pump 4, the other end of the reflux pipe is connected to a wastewater outlet of the reverse osmosis filter element 5, and the reflux valve 7 is arranged on the reflux pipe. By arranging the reflux valve 7 and the reflux pipeline, a part of wastewater of the reverse osmosis filter element 5 can be subjected to secondary filtration, so that the recovery rate of water resources is improved.
In the present embodiment, the return line is provided between the first booster pump 3 and the second booster pump 4, and the return valve 7 is provided before the first booster pump 3, so that the problem of the increase in the return amount under low water pressure is mainly solved. Specifically, when the water pressure of water source department diminishes, the front and back end pressure differential of return valve 7 can become big to cause the reflux volume to increase, the membrane front pressure that reverse osmosis filter core 5 needs work reduces, influences the performance of reverse osmosis filter core 5, through setting up second booster pump 4, thereby reduces the influence that water source department water pressure is low, reduces the harm to reverse osmosis filter core 5, and then the life of extension reverse osmosis filter core 5. The embodiment can solve the problem of increasing the reflux quantity under low tap water pressure, improves the service performance of the reverse osmosis filter element 5 and prolongs the service life of the reverse osmosis filter element 5.
Further, the water-saving reverse osmosis system further comprises a reflux valve 7 connected with the controller, and the reflux valve 7 is arranged on the reflux pipe. The reflux valve 7 can control the flow rate when the wastewater flowing out from the wastewater outlet of the reverse osmosis filter element 5 flows back to the water inlet of the reverse osmosis filter element 5 for re-filtration. The size of the reflux quantity is controlled by arranging the reflux valve 7, so that the membrane front pressure of the reverse osmosis filter element 5 is not too small, and the performance of the reverse osmosis filter element 5 is ensured.
Further, the water-saving reverse osmosis system further comprises a plurality of pre-filter elements 2, and the pre-filter elements 2 are sequentially connected in series between the booster pump assembly and the water source. By arranging the pre-filter element 2, the primary pre-filtration is realized before the water source enters the reverse osmosis filter element 5, and some basic impurities are filtered, so that the working pressure of the reverse osmosis filter element 5 is reduced. Preferably, a plurality of post-filter elements 6 may be further disposed behind the reverse osmosis filter element 5, and the plurality of post-filter elements 6 are sequentially connected in series behind the reverse osmosis filter element 5, so as to further filter the water filtered from the reverse osmosis filter element 5, and extract the purity of the water.
Further, the water-saving reverse osmosis system further comprises a front TDS detection sensor (not shown) and a rear TDS detection sensor (not shown) which are connected with the controller, wherein the front TDS detection sensor is arranged at the water inlet of the reverse osmosis filter element 5, and the rear TDS detection sensor is arranged at the pure water outlet of the reverse osmosis filter element. The TDS detection sensor is used for detecting water quality, and the condition of the water quality before the reverse osmosis filter element 5 can be detected by arranging the preposed TDS detection sensor at the water inlet of the reverse osmosis filter element, and the result is fed back to the controller; then, a post-TDS detection sensor is disposed at the pure water outlet of the reverse osmosis filter element 5, the water quality after the water is filtered by the reverse osmosis filter element 5 is further detected, the result is fed back to the controller, and the controller compares the water quality detected by the pre-TDS detection sensor with the water quality detected by the post-TDS detection sensor, so that whether the filtering capacity of the reverse osmosis filter element 5 reaches the standard or not can be judged, the filtering capacity of the reverse osmosis filter element 5 is determined, and when the filtering capacity of the reverse osmosis filter element 5 is reduced to a certain set value, the reverse osmosis filter element 5 needs to be replaced.
Further, the water-saving reverse osmosis filter element 5 further comprises an alarm electrically connected with the controller. If the filtering function of the reverse osmosis filter element 5 is detected to be not up to standard, the controller sends a signal to the alarm, controls the alarm to give an alarm, and the alarm gives an alarm to prompt a user to replace the reverse osmosis filter element 5, so that the water use safety is ensured.
In order to treat the wastewater discharged from the wastewater outlet of the reverse osmosis filter element 5, a wastewater pipe is connected to the wastewater outlet of the reverse osmosis filter element 5, the wastewater pipe is connected in parallel with the return pipe, and a wastewater valve 8 for controlling water flow is arranged on the wastewater pipe. Specifically, the water flow direction in the reverse osmosis system is as follows: the water flowing out of the water inlet 1 of the system is filtered by the front filter element 2, flows to the second booster pump 4, flows into the reverse osmosis filter element 5 through the first booster pump 3 for deep purification, and finally the pure water flowing out of the reverse osmosis filter element 5 is filtered by the rear filter element 8 and directly flows out of the pure water outlet 10, which is the first route of water flow; the wastewater discharged from the wastewater outlet in the reverse osmosis filter element 5 can be divided into two flow directions, wherein the first flow direction is that part of wastewater is returned to the first booster pump 3 from the return pipe through the return valve 7, so that the wastewater is filtered again at the water inlet entering the reverse osmosis filter element 5; the second is that a part of the wastewater discharged from the wastewater outlet of the reverse osmosis filter element 5 is directly discharged from the wastewater pipe through the wastewater valve 8 and discharged from the wastewater outlet 9 of the water-saving reverse osmosis system to the wastewater recovery device.
In the present embodiment, the return valve 7 functions substantially as the waste valve 8, but the sizes of the outlets of the return valve 7 and the waste valve 8 are not limited herein. Preferably, the reflux valve 7 of the present embodiment is a small hole water outlet, which reduces the water outlet amount by reducing the water passing area, and has pressure maintaining effect.
Further, in an embodiment of the present invention, the water-saving reverse osmosis system further includes a pressure sensor for detecting the water pressure on the water inlet pipe, and the controller is electrically connected to the pressure sensor, and controls the flow of the backflow valve 7 according to the water pressure detected by the pressure sensor. Specifically, when the pressure sensor detects that the water pressure is too low, a signal is transmitted to the controller, at the moment, the water pressure is too low, so that the front-back pressure of the backflow valve 7 is reduced, and the front-back pressure of the membrane of the reverse osmosis filter element 5 is reduced, at the moment, the controller controls the backflow valve 7, and the flow of the backflow valve 7 is reduced.
In another embodiment of the present invention, the water-saving reverse osmosis system may further be provided with a temperature sensor, the water temperature on the water inlet pipe is detected by the temperature sensor, and the flow of the reflux valve 7 is controlled according to the water temperature detected by the temperature sensor. Specifically, when the water temperature is too low, the temperature sensor transmits the detected water temperature value to the controller, and if the water temperature is too low, the front-back pressure of the backflow valve 7 is reduced, the front-back pressure of the membrane of the reverse osmosis filter element 5 is further reduced, and the controller controls the backflow valve 7 to reduce the flow rate of the backflow valve 7, so that the influence of the low water temperature on the performance of the reverse osmosis filter element 5 is reduced. Preferably, the reverse osmosis filter element membrane is a multistage reverse osmosis membrane, and can be specifically selected according to the needs.
The invention also provides a water-saving reverse osmosis water purifier, which comprises the water-saving reverse osmosis system. Other constructions and operations of the water-saving reverse osmosis water purifier according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein. Specifically, the water-saving reverse osmosis water purifier adopts all the technical schemes of all the embodiments, so that the water-saving reverse osmosis water purifier at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. The water-saving reverse osmosis system is characterized by comprising a reverse osmosis filter element, a booster pump assembly and a controller, wherein the booster pump assembly is connected with the controller; the water inlet of the reverse osmosis filter element is connected with a water inlet pipeline, and the booster pump assembly comprises a first booster pump and a second booster pump which are arranged on the water inlet pipeline; a return pipe is arranged between the first booster pump and the second booster pump, one end of the return pipe is connected to a pipeline between the first booster pump and the second booster pump, and the other end of the return pipe is connected with a waste water outlet of the reverse osmosis filter element; the water-saving reverse osmosis system further comprises a plurality of preposed filter elements arranged on the water inlet pipeline, and the preposed filter elements are sequentially connected in series between the booster pump assembly and a water source; the water-saving reverse osmosis system further comprises a reflux valve connected with the controller, wherein the reflux valve is arranged on the reflux pipe and is positioned before the first booster pump.
2. The water conservation reverse osmosis system of claim 1, further comprising a plurality of post-filter elements, the plurality of post-filter elements being serially connected in sequence on the pure water output line of the reverse osmosis filter element.
3. The water conservation reverse osmosis system of claim 1 further comprising a front TDS detection sensor and a rear TDS detection sensor coupled to the controller, the front TDS detection sensor being disposed at the water inlet of the reverse osmosis cartridge and the rear TDS detection sensor being disposed at the pure water outlet of the reverse osmosis cartridge.
4. The water conservation reverse osmosis system of claim 3 wherein the reverse osmosis cartridge further comprises an alarm electrically connected to the controller.
5. The water conservation reverse osmosis system according to any one of claims 1 to 4 wherein a waste water pipe is further connected to the waste water outlet of the reverse osmosis filter element, the waste water pipe is connected in parallel with the return pipe, and a waste water valve for controlling water flow is provided on the waste water pipe.
6. The water conservation reverse osmosis system according to any one of claims 1 to 4 wherein the water conservation reverse osmosis system further comprises a pressure sensor for detecting the water pressure on the water inlet line, the controller is electrically connected to the pressure sensor, and the magnitude of the return valve flow is controlled according to the water pressure detected by the pressure sensor.
7. The water conservation reverse osmosis system according to any one of claims 1 to 4 wherein the water conservation reverse osmosis system further comprises a temperature sensor for detecting the water temperature on the water inlet line, the controller is electrically connected to the temperature sensor, and the magnitude of the return valve flow is controlled according to the water temperature detected by the temperature sensor.
8. A water-saving reverse osmosis water purifier comprising the water-saving reverse osmosis system according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165884.1A CN108002486B (en) | 2016-12-15 | 2016-12-15 | Water-saving reverse osmosis system and water-saving reverse osmosis water purifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165884.1A CN108002486B (en) | 2016-12-15 | 2016-12-15 | Water-saving reverse osmosis system and water-saving reverse osmosis water purifier |
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| CN108002486A CN108002486A (en) | 2018-05-08 |
| CN108002486B true CN108002486B (en) | 2023-10-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433014A (en) * | 2019-01-07 | 2019-03-08 | 上海万沣环保科技有限公司 | A kind of Gao Shuixiao water purification system |
| CN111186924A (en) * | 2020-02-10 | 2020-05-22 | 青岛海洋地质研究所 | Reverse osmosis water making equipment capable of automatically adjusting temperature |
| CN114162997A (en) * | 2021-08-31 | 2022-03-11 | 佛山市美的清湖净水设备有限公司 | Waterway system and water purifier |
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| CN108002486A (en) | 2018-05-08 |
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