A water-saving reverse osmosis water purifier

Abstract

The present invention belongs to the technical field of water purification equipment, and specifically relates to a water-saving reverse osmosis water purifier, comprising: a clean water pipeline for purifying water, a circulation pipeline for circulating and filtering, and a cleaning pipeline for cleaning and sterilizing the reverse osmosis filter and pipeline. The present invention utilizes the coordination of the clean water pipeline and the circulation pipeline. The circulation pipeline heats and filters the concentrated water produced by the reverse osmosis filter in the clean water pipeline, effectively reducing the content of salt substances and microorganisms such as bacteria and algae in the concentrated water, thereby reducing the overall amount of concentrated water produced by the water purifier and conserving water resources. The cleaning pipeline allows heated high-temperature raw water and concentrated water to be used to clean and sterilize the reverse osmosis filter after the TDS sensor detects that the purified water does not meet the standards.

Description

Technical Field

[0001] The invention belongs to the technical field of water purification equipment, and in particular relates to a water-saving reverse osmosis water purifier. Background Art

[0002] With the ever-increasing demand for water resources, the efficient use and purification of water resources has become a crucial issue. In many regions, water quality issues require the use of water purifiers to purify tap water before it can be used for domestic and industrial purposes. Traditional water purifiers typically use reverse osmosis technology, which effectively removes impurities and harmful substances from water. However, this technology produces a large amount of concentrated water when filtering raw water, which leads to a waste of water resources. Furthermore, after prolonged use, traditional water purifiers can clog their filters and breed microorganisms such as bacteria and algae. This not only affects the purification effectiveness of the water purifier but can also have adverse effects on the health of the user.

[0003] Therefore, it is necessary to study a water-saving reverse osmosis water purifier that can reduce the amount of concentrated water produced by the reverse osmosis filter and clean the reverse osmosis filter through internal circulation. Summary of the Invention

[0004] In response to the above-mentioned deficiencies in the prior art, the present invention provides a water-saving reverse osmosis water purifier to solve the technical problem that traditional water purifiers produce a large amount of concentrated water when filtering raw water, which leads to waste of water resources and breeds microorganisms such as bacteria and algae, affecting the purification effect of the water purifier.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A water-saving reverse osmosis water purifier, comprising: a water purification pipeline, a circulation pipeline, and a cleaning pipeline;

[0007] The clean water pipeline includes a water inlet, a first filter, a first booster pump, a first one-way valve, a ninth solenoid valve, a reverse osmosis filter, a detection water tank, a first solenoid valve, a clean water storage tank, a second solenoid valve, a clean water faucet, a heating pipe, a third solenoid valve, a second filter, a concentrated water storage tank, a fourth solenoid valve, and a concentrated water outlet. The reverse osmosis filter is provided with a water inlet, a concentrated water outlet, and a clean water outlet. The concentrated water storage tank is provided with a water inlet, a first water outlet, and a second water outlet. The water inlet, the first filter, the first booster pump, the first one-way valve, the ninth solenoid valve, the reverse osmosis filter, the first one-way valve, the clean water storage tank, the second solenoid valve, the clean water faucet, the heating pipe, the third solenoid valve, the second filter, the concentrated water storage tank, the fourth solenoid valve, and the concentrated water outlet. The pressure pump, the first one-way valve, the ninth solenoid valve, and the water inlet of the reverse osmosis filter are sequentially connected in series through a pipeline; the clean water outlet of the reverse osmosis filter, the detection water tank, the first solenoid valve, the clean water storage tank, the second solenoid valve, and the clean water faucet are sequentially connected in series through a pipeline; the concentrated water outlet of the reverse osmosis filter, the heat pipe, the third solenoid valve, the second filter, and the water inlet of the concentrated water storage tank are sequentially connected in series through a pipeline; the first water outlet of the concentrated water storage tank is connected to the concentrated water outlet through a pipeline, and a fourth solenoid valve is also provided on the pipeline;

[0008] The circulation pipeline includes a second one-way valve, a third one-way valve, and the second water outlet of the concentrated water storage tank, the second one-way valve, the third one-way valve, and the water inlet of the reverse osmosis filter are sequentially connected in series through a pipeline;

[0009] The cleaning pipeline includes: a sixth solenoid valve, a fourth one-way valve, a seventh solenoid valve, an eighth solenoid valve, and a fifth one-way valve. The water inlet of the reverse osmosis filter, the ninth solenoid valve, the sixth solenoid valve, the fourth one-way valve, and the water inlet of the heating pipe are connected in series through pipes in sequence. The water outlet of the heating pipe, the seventh solenoid valve, the third boosting pump, the third one-way valve, and the water inlet of the reverse osmosis filter are connected in sequence through pipes. The water inlet of the detection water tank, the eighth solenoid valve, the fifth one-way valve, and the concentrated water storage tank are connected in sequence through pipes.

[0010] Furthermore, a first pressure sensor is provided on the reverse osmosis filter.

[0011] Furthermore, a second pressure sensor is provided on the concentrated water storage tank.

[0012] Furthermore, a TDS sensor is provided on the detection water tank.

[0013] Furthermore, the water purification pipeline also includes a fifth solenoid valve and a concentrated water faucet. The concentrated water faucet is connected to the water outlet of the fourth solenoid valve through a pipeline, and the fifth solenoid valve is provided on the pipeline.

[0014] Furthermore, the clean water pipeline also includes a second booster pump, which is arranged on the pipeline between the water outlet of the clean water storage tank and the second solenoid valve.

[0015] Furthermore, the circulation pipeline also includes a flow regulating valve, which is arranged on the pipeline between the second water outlet of the concentrated water storage tank and the second one-way valve.

[0016] Furthermore, the circulation pipeline also includes a third booster pump, which is arranged on the pipeline between the second one-way valve and the third one-way valve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention discloses a water-saving reverse osmosis water purifier. Through the cooperation of a water purification pipeline and a circulation pipeline, the circulation pipeline can heat and filter the concentrated water produced by the reverse osmosis filter in the water purification pipeline, effectively reducing the content of salt substances and microorganisms such as bacteria and algae in the concentrated water, thereby reducing the overall amount of concentrated water produced by the water purifier and saving water resources.

[0019] 2. The water-saving reverse osmosis water purifier disclosed in the present invention can use heated high-temperature raw water and concentrated water to clean and sterilize the reverse osmosis filter by cleaning the pipeline after the TDS sensor detects that the purified water does not meet the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] The reference numerals involved in the accompanying drawings are:

[0022] 1. Water inlet; 2. First filter; 3. First booster pump; 4. First one-way valve; 5. Reverse osmosis filter; 6. First pressure sensor; 7. Test water tank; 8. TDS sensor; 9. First solenoid valve; 10. Clean water storage tank; 11. Second booster pump; 12. Second solenoid valve; 13. Clean water faucet; 14. Instantaneous heating pipe; 15. Third solenoid valve; 16. Second filter; 17. Concentrate water storage tank; 18. Second pressure sensor; 19. Fourth solenoid valve; 20. Concentrate water outlet; 21. Fifth solenoid valve; 22. Concentrate water faucet; 23. Flow regulating valve; 24. Second one-way valve; 25. Third booster pump; 26. Third one-way valve; 27. Sixth solenoid valve; 28. Fourth one-way valve; 29. ​​Seventh solenoid valve; 30. Eighth solenoid valve; 31. Fifth one-way valve; 32. Ninth solenoid valve. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0024] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] Example 1

[0027] See also Figure 1 As shown, a water-saving reverse osmosis water purifier comprises:

[0028] A water-saving reverse osmosis water purifier is characterized by comprising: a water purification pipeline for purifying water, a circulation pipeline for circulating filtration, and a cleaning pipeline for cleaning and sterilizing the reverse osmosis filter and pipelines.

[0029] The clean water pipeline includes a water inlet 1, a first filter 2, a first booster pump 3, a first one-way valve 4, a reverse osmosis filter 5, a detection water tank 7, a first solenoid valve 9, a clean water storage tank 10, a second solenoid valve 12, a clean water faucet 13, a heating pipe 14, a third solenoid valve 15, a second filter 16, a concentrated water storage tank 17, a fourth solenoid valve 19, a concentrated water outlet 20, and a ninth solenoid valve 32. The reverse osmosis filter 5 is provided with a water inlet, a concentrated water outlet, and a purified water outlet. The raw water enters the reverse osmosis filter 5 through the water inlet, the purified water after filtration is discharged through the purified water outlet, and the concentrated water produced by filtration is discharged through the concentrated water outlet; the concentrated water storage tank 17 is provided with a water inlet, a first water outlet, and a second water outlet. The concentrated water filtered by the second filter 16 enters the concentrated water storage tank 17 through the water inlet of the concentrated water storage tank 17, part of the concentrated water is discharged from the water purifier through the first water outlet, and part of the concentrated water is discharged through the second water outlet and returned to the reverse osmosis filter 5 for further purification.

[0030] The water inlet 1, the first filter 2, the first booster pump 3, the first one-way valve 4, the ninth solenoid valve 32, and the water inlet of the reverse osmosis filter 5 are connected in series through a pipeline in sequence. It can be understood that the raw water enters the first filter 2 through the water inlet 1. Under the action of the first booster pump 3, the raw water is preliminarily purified after passing through the first filter 2 and enters the reverse osmosis filter 5 through the channel formed by the first booster pump 3, the first one-way valve 4, the ninth solenoid valve 32, and the water inlet of the reverse osmosis filter 5. The first one-way valve 4 can control the water to flow only from the first booster pump 3 to the reverse osmosis filter 5 through the first one-way valve 4. Specifically, a first pressure sensor 6 is provided on the reverse osmosis filter 5. It can be understood that the first pressure sensor 6 can detect the water pressure in the reverse osmosis filter 5.

[0031] The clean water outlet of the reverse osmosis filter 5, the detection water tank 7, the first solenoid valve 9, the clean water storage tank 10, the second solenoid valve 12, and the clean water faucet 13 are connected in series through pipelines in sequence. It can be understood that after the clean water passes through the reverse osmosis filter 5 and flows out from the clean water outlet, it enters the clean water storage tank 10 for storage through the channel formed by the pipeline, the detection water tank 7, and the first solenoid valve 9. Specifically, a TDS sensor 8 is provided on the detection water tank 7. It can be understood that after the clean water enters the detection water tank 7 for buffering through the pipeline, the TDS sensor 8 can detect the detection water tank 7. The total amount of dissolved solids in the reclaimed water can be used to judge the water purification effect of the reverse osmosis filter 5, and then judge whether the reverse osmosis filter 5 needs to be cleaned; specifically, the clean water pipeline also includes a second booster pump 11, and the second booster pump 11 is arranged on the pipeline between the water outlet of the clean water storage tank 10 and the second solenoid valve 12. The clean water in the clean water storage tank 10 can enter the clean water faucet 13 through the pipeline and the channel formed by the second booster pump 11 and the second solenoid valve 12 under the action of the second booster pump 11. The second solenoid valve 12 can control whether the clean water flows out through the clean water faucet 13.

[0032] The concentrated water outlet of the reverse osmosis filter 5, the heat pipe 14, the third solenoid valve 15, the second filter 16, and the water inlet of the concentrated water storage tank 17 are connected in series in sequence through pipelines. It can be understood that the concentrated water flows out of the concentrated water outlet of the reverse osmosis filter 5 and enters the concentrated water storage tank 17 through the heat pipe 14, the third solenoid valve 15, the second filter 16, and the water inlet of the concentrated water storage tank 17. The heat pipe 14 can heat the water flowing through it. Specifically, the concentrated water storage tank 17 is provided with a second pressure sensor 18. It can be understood that the second pressure sensor The sensor 18 can detect the water pressure in the concentrated water storage tank 17; the first water outlet of the concentrated water storage tank 17 is connected to the concentrated water outlet 20 through a pipe, and a fourth solenoid valve 19 is also provided on the pipe, and the concentrated water can be discharged through the concentrated water outlet 20; specifically, the clean water pipeline also includes a fifth solenoid valve 21 and a concentrated water faucet 22, and the concentrated water faucet 22 is connected to the water outlet of the fourth solenoid valve 19 through a pipe, and a fifth solenoid valve 21 is provided on this pipe. It can be understood that the fifth solenoid valve 21 can control the discharge of concentrated water from the concentrated water faucet 22.

[0033] The circulation pipeline includes a second one-way valve 24 and a third one-way valve 26. The second water outlet of the concentrate storage tank 17, the second one-way valve 24, the third one-way valve 26, and the water inlet of the reverse osmosis filter 5 are sequentially connected in series via a pipeline. Specifically, the circulation pipeline also includes a flow regulating valve 23, which is disposed on the pipeline between the second water outlet of the concentrate storage tank 17 and the second one-way valve 24. Specifically, the circulation pipeline also includes a third booster pump 25, which is disposed on the pipeline between the second one-way valve 24 and the third one-way valve 26. It can be understood that the concentrated water in the concentrated water storage tank 17, under the action of the third booster pump 25, passes through the pipeline and the flow regulating valve 23, the second one-way valve 24, the third booster pump 25, the third one-way valve 26, and the water inlet of the reverse osmosis filter 5 and enters the reverse osmosis filter 5 for purification again, wherein the flow regulating valve 23 can control the flow rate of concentrated water flowing out of the concentrated water storage tank 17, the second one-way valve 24 allows water to flow only from the flow regulating valve 23 through the second one-way valve 24 to the third booster pump 25, and the third one-way valve 26 allows water to flow only from the third booster pump 25 through the third one-way valve 26 to the reverse osmosis filter 5.

[0034] The cleaning pipeline includes: a sixth solenoid valve 27, a fourth one-way valve 28, a seventh solenoid valve 29, an eighth solenoid valve 30, and a fifth one-way valve 31. The water inlet of the reverse osmosis filter 5, the ninth solenoid valve 32, the sixth solenoid valve 27, the fourth one-way valve 28, and the water inlet of the heat pipe 14 are sequentially connected in series through a pipeline. The water outlet of the heat pipe 14, the seventh solenoid valve 29, the third boosting pump 25, the third one-way valve 26, and the water inlet of the reverse osmosis filter 5 are sequentially connected through a pipeline. The detection water tank 7, the eighth solenoid valve 30, the fifth one-way valve 31, and the water inlet of the concentrated water storage tank 17 are sequentially connected through a pipeline. It can be understood that the raw water can be discharged through the pipeline and the ninth solenoid valve 32, The channel formed by the sixth solenoid valve 27 and the fourth one-way valve 28 enters the instant heating pipe 14 for heating. After heating is completed, it enters the reverse osmosis filter 5 through the channel formed by the seventh solenoid valve 29, the third booster pump 25, the third one-way valve 26 and the pipeline for cleaning and sterilization. Then, the high-temperature clean water filtered by the reverse osmosis filter 5 enters the concentrated water storage tank 17 through the pipeline and the detection water tank 7, the eighth solenoid valve 30, and the fifth one-way valve 31. The high-temperature concentrated water enters the instant heating pipe 14 through the pipeline, mixes with the raw water, and enters the reverse osmosis filter 5 again for cleaning and sterilization.

[0035] The working principle of the present invention is as follows:

[0036] During use, the first solenoid valve 9, the third solenoid valve 15, and the ninth solenoid valve 32 are opened, and the second solenoid valve 12, the fourth solenoid valve 19, the fifth solenoid valve 21, the sixth solenoid valve 27, the seventh solenoid valve 29, and the eighth solenoid valve 30 are closed. The raw water enters the first filter 2 through the water inlet 1. Under the action of the first booster pump 3, the raw water is preliminarily purified by the first filter 2 and then enters the reverse osmosis filter 5 through the channel formed by the first booster pump 3, the first one-way valve 4, and the water inlet of the reverse osmosis filter 5 of the pipeline machine; the clean water produced after filtration enters the detection water tank 7 through the pipeline, and the TDS sensor 8 detects the clean water. When the detection meets the mark, the clean water pipeline and the first solenoid valve 9 are The water flows through the channel formed by the second electromagnetic valve 12 and the second booster pump 11, and the clean water in the clean water storage tank 10 is stored; at this time, the second electromagnetic valve 12 and the second booster pump 11 are opened, and the clean water in the clean water storage tank 10 can be pumped out through the clean water faucet 13; the sewage produced by purification enters the concentrated water storage tank 17 through the water inlet of the hot water pipe 14, the third electromagnetic valve 15, the second filter 16, and the concentrated water storage tank 17. The second pressure sensor 18 can detect the water pressure in the concentrated water storage tank 17. When the water pressure is higher than the preset value, the fourth electromagnetic valve 19 is opened, and part of the concentrated water is discharged through the concentrated water outlet 20 to release the pressure; the fifth electromagnetic valve 21 can be opened to discharge the concentrated water in the concentrated water storage tank 17 through the concentrated water faucet 22, which is convenient for users to use and saves water.

[0037] Under the action of the third booster pump 25, the concentrated water in the concentrated water storage tank 17 passes through the pipeline and the flow regulating valve 23, the second one-way valve 24, the third booster pump 25, the third one-way valve 26, and the water inlet of the reverse osmosis filter 5 and enters the reverse osmosis filter 5 for further purification, among which the flow regulating valve 23 can control the flow rate of concentrated water flowing out of the concentrated water storage tank 17.

[0038] Example 2

[0039] The difference between this embodiment and the first embodiment is that when the TDS sensor 8 detects that the purification does not meet the standards, the ninth solenoid valve 32, the first solenoid valve 9, the third solenoid valve 15, the second solenoid valve 12, the fourth solenoid valve 19, and the fifth solenoid valve 21 are closed, and the sixth solenoid valve 27, the seventh solenoid valve 29, and the eighth solenoid valve 30 are opened.

[0040] The raw water is driven by the first booster pump 3 and enters the instant heating pipe 14 through the pipeline and the channel formed by the first filter 2, the first booster pump 3, the first non-return valve 4, the sixth solenoid valve 27, and the fourth non-return valve 28 to be heated; the high-temperature raw water is driven by the third booster pump 25 and enters the reverse osmosis filter 5 through the pipeline and the seventh solenoid valve 29, the third booster pump 25, the third non-return valve 26, and the water inlet of the reverse osmosis filter 5 to clean the reverse osmosis filter 5 and sterilize it with high temperature; the high-temperature purified water produced by the filtration of the reverse osmosis filter 5 enters the detection water tank 7, and the TDS sensor 8 detects the high-temperature purified water; the high-temperature purified water The concentrated water enters the concentrated water storage tank 17 through the pipeline and the eighth solenoid valve 30 and the fifth one-way valve 31; the high-temperature concentrated water returns to the instant heating pipe 14 through the pipeline, where the high-temperature concentrated water is mixed with the raw water and heated by the instant heating pipe 14, and then returns to the reverse osmosis filter 5 for cleaning and sterilization; after the TDS sensor 8 detects that the high-temperature purified water meets the standard, the first solenoid valve 9, the third solenoid valve 15, and the ninth solenoid valve 32 are opened, and the second solenoid valve 12, the fourth solenoid valve 19, the fifth solenoid valve 21, the sixth solenoid valve 27, the seventh solenoid valve 29, and the eighth solenoid valve 30 are closed, and the water purifier resumes normal operation.

[0041] The above is only an embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the guidance of this application. Some typical well-known structures or well-known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A water-saving reverse osmosis water purifier, characterized in that: include: Water purification pipeline, circulation pipeline, cleaning pipeline; The water purification pipeline comprises a raw water inlet (1), a first filter (2), a first booster pump (3), a first one-way valve (4), a ninth solenoid valve (32), a reverse osmosis filter (5), a detection water tank (7), a first solenoid valve (9), a purified water storage tank (10), a second solenoid valve (12), a purified water tap (13), a heating pipe (14), a third solenoid valve (15), a second filter (16), a concentrated water storage tank (17), a fourth solenoid valve (19), and a concentrated water outlet (20). The reverse osmosis filter (5) is provided with a reverse osmosis filter inlet, a concentrated water outlet, and a purified water outlet. The concentrated water storage tank (17) is provided with a concentrated water storage tank inlet, a first outlet, and a second outlet. The raw water inlet (1), the first filter (2) and the first one-way valve (4) are provided with a concentrated water storage tank inlet, a first outlet, and a second outlet. The filter (2), the first booster pump (3), the first one-way valve (4), the ninth solenoid valve (32), and the water inlet of the reverse osmosis filter (5) are sequentially connected in series through a pipeline; the clean water outlet of the reverse osmosis filter (5), the detection water tank (7), the first solenoid valve (9), the clean water storage tank (10), the second solenoid valve (12), and the clean water tap (13) are sequentially connected in series through a pipeline; the concentrated water outlet of the reverse osmosis filter (5), the heat pipe (14), the third solenoid valve (15), the second filter (16), and the water inlet of the concentrated water storage tank (17) are sequentially connected in series through a pipeline; the first water outlet of the concentrated water storage tank (17) is connected to the concentrated water outlet (20) through a concentrated water outlet pipeline, and a fourth solenoid valve (19) is also provided on the concentrated water outlet pipeline; The circulation pipeline comprises a second one-way valve (24), a third one-way valve (26), and the second water outlet of the concentrated water storage tank (17), the second one-way valve (24), the third one-way valve (26), and the water inlet of the reverse osmosis filter (5) are sequentially connected in series through a pipeline; The cleaning pipeline includes: a sixth solenoid valve (27), a fourth one-way valve (28), a seventh solenoid valve (29), an eighth solenoid valve (30), and a fifth one-way valve (31); the water inlet of the reverse osmosis filter (5), the ninth solenoid valve (32), the sixth solenoid valve (27), the fourth one-way valve (28), and the water inlet of the heat pipe (14) are sequentially connected through a pipeline; the water outlet of the heat pipe (14), the seventh solenoid valve (29), the third boosting pump (25), the third one-way valve (26), and the water inlet of the reverse osmosis filter (5) are sequentially connected through a pipeline; and the detection water tank (7), the eighth solenoid valve (30), the fifth one-way valve (31), and the water inlet of the concentrated water storage tank (17) are sequentially connected through a pipeline.

2. The water-saving reverse osmosis water purifier according to claim 1, characterized in that: A first pressure sensor (6) is provided on the reverse osmosis filter (5).

3. The water-saving reverse osmosis water purifier according to claim 2, characterized in that: A second pressure sensor (18) is provided on the concentrated water storage tank (17).

4. The water-saving reverse osmosis water purifier according to claim 3, characterized in that: The detection water tank (7) is provided with a TDS sensor (8).

5. The water-saving reverse osmosis water purifier according to claim 1, characterized in that: The purified water pipeline further comprises a fifth electromagnetic valve (21) and a concentrated water tap (22), wherein the concentrated water tap (22) is connected to the water outlet of the fourth electromagnetic valve (19) via a pipeline.

6. The water-saving reverse osmosis water purifier according to claim 5, characterized in that: The clean water pipeline further comprises a second booster pump (11), which is arranged on a pipeline between the water outlet of the clean water storage tank (10) and the second solenoid valve (12).

7. The water-saving reverse osmosis water purifier according to claim 1, characterized in that: The circulation pipeline further comprises a flow regulating valve (23), which is arranged on a pipeline between the second water outlet of the concentrated water storage tank (17) and the second one-way valve (24).

8. The water-saving reverse osmosis water purifier according to claim 7, characterized in that: The circulation pipeline further comprises a third booster pump (25) shared with the cleaning pipeline, and the third booster pump (25) is arranged on the pipeline between the second one-way valve (24) and the third one-way valve (26).

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