CN216837249U

CN216837249U - Water purification system

Info

Publication number: CN216837249U
Application number: CN202122782060.1U
Authority: CN
Inventors: 许经衍; 陈逢北; 蓝毓明; 胡凯
Original assignee: Guangdong Aomei Intelligent Technology Co ltd
Current assignee: Guangdong Aomei Intelligent Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-06-28
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a water purification system, comprising: the system comprises a reverse osmosis filter element, a raw water pipeline, a first water storage container, a pure water pipeline, a concentrated water pipeline, a second water storage container and a second water taking switch; utilize the second control valve, the return water pipeline, first water storage container, the cooperation of subassemblies such as second water storage container, the problem that "first cup of water" concentration value is high has been solved, and the dense water backward flow, reduce the direct water waste that discharges of dense water and lead to, utilize second water storage container to provide the pure water to the user when retrieving "first cup of water", or utilize the storage water dilution first cup of water concentration of second water storage container, the in-process does not influence taking of user to the pure water, the system need not to handle "first cup of water" automatically at every certain interval, only need just handle when the user takes the pure water.

Description

Water purification system

Technical Field

The utility model relates to water purification equipment, in particular to a water purification system.

Background

After the reverse osmosis filter element is stood for a period of time, the concentrated water on the concentrated water side in the reverse osmosis filter element can permeate into the pure water on the pure water side, so that the TDS value of the pure water is increased. When a user uses pure water, the TDS value of the 'first cup of water' is higher, and the health of water is influenced. In some existing water purification systems, a 'first cup of water' is treated or discharged every certain period of time by internal circulation of the system. In addition, the systems directly discharge concentrated water produced by the reverse osmosis filter element in the water using process, which is undoubtedly waste of water resources.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least in part, one of the above-mentioned problems in the related art. Therefore, the utility model provides a water purification system.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a water purification system according to an embodiment of the first aspect of the utility model, comprises:

the reverse osmosis filter element is provided with a raw water end, a pure water end and a concentrated water end;

the raw water pipeline is connected with the raw water end, and a first control valve and a first supercharging device are arranged on the raw water pipeline;

the first water storage container is communicated with a water source and is communicated with the raw water pipeline;

the pure water pipeline is connected with the pure water end, and a first water taking switch positioned at the tail end is arranged on the pure water pipeline;

the concentrated water pipeline is connected with the concentrated water end and is communicated with the first water storage container;

the second water storage container is in controllable water circulation with the pure water pipeline;

and the second water taking switch is communicated with the first water storage container.

According to the water purification system provided by the embodiment of the utility model, at least the following beneficial effects are achieved: utilize the second control valve, the return water pipeline, first water storage container, the cooperation of subassemblies such as second water storage container, the problem that "first cup of water" concentration value is high has been solved, and the dense water backward flow, reduce the direct water waste that discharges of dense water and lead to, utilize second water storage container to provide the pure water to the user when retrieving "first cup of water", or utilize the storage water dilution first cup of water concentration of second water storage container, the in-process does not influence taking of user to the pure water, the system need not to handle "first cup of water" automatically at every certain interval, only need just handle when the user takes the pure water.

According to some embodiments of the utility model, the second water storage container has a pressure water storage cavity with variable volume, and the pressure water storage cavity is communicated with the pure water pipeline through a water pipeline.

According to some embodiments of the present invention, the second water storage container has a pure water cavity therein, the pure water cavity is connected to the pure water pipeline through a water passing pipeline, a third check valve and a second pressure increasing device are connected in parallel to the water passing pipeline, water flowing through the third check valve flows in one direction from the pure water pipeline to the pure water cavity, and the second pressure increasing device draws water in the pure water cavity to the pure water pipeline.

According to some embodiments of the utility model, the pure water system further comprises a pure water pipeline, wherein a second control valve is arranged on the pure water pipeline, one end of the pure water pipeline is connected to the upstream side of the second control valve, the other end of the pure water pipeline is communicated with the first water storage container, a third control valve is arranged on the pure water pipeline, and the second water storage container is connected to the pure water pipeline and connected to the downstream side of the second control valve.

According to some embodiments of the present invention, a confluence line is connected to the first water storage container, and the concentrate line and the return line are connected to the confluence line.

According to some embodiments of the utility model, a water quality detection device for detecting water in the first water storage container is further provided, the first water storage container is communicated with a drainage pipeline, and a fourth control valve is arranged on the drainage pipeline.

According to some embodiments of the utility model, a first flow detection device is arranged at the water return end of the first water storage container, and the first flow detection device is used for detecting the amount of the concentrated water flowing back into the first water storage container.

According to some embodiments of the utility model, the first water storage container and the second water storage container are integrated into one water storage device.

According to some embodiments of the present invention, a first check valve and a waste water valve are disposed on the concentrated water pipeline, the first check valve controls water on the raw water pipeline to flow in a one-way manner towards the first water storage container, and the waste water valve controls water flow on the concentrated water pipeline.

According to some embodiments of the utility model, the pure water pipeline is provided with a second one-way valve and a pressure detection device, the second one-way valve is arranged near the pure water end, and the pressure detection device is arranged near the first water taking switch.

According to some embodiments of the utility model, the plain water pipeline is provided with a second flow detection device downstream of a junction of the second water reservoir and the plain water pipeline.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of one embodiment of the present invention

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

FIG. 3 is a schematic view of a third embodiment of the present invention;

fig. 4 is a schematic view of a fourth embodiment of the present invention.

Reference numerals:

a reverse osmosis filter element 100; a raw water end 101; a pure water end 102; a concentrate end 103;

a raw water line 200; a first control valve 201; a first pressure boosting device 202; a composite filter element 203;

a first water storage container 300; a pressure reducing valve 301; a tap water pipe 302; a confluence line 303; a water quality detection device 304; a drain line 305; a fourth control valve 306; a first flow rate detection device 307;

A plain water line 400; a second control valve 401; a first water intake switch 402; a second check valve 403; a pressure detection device 404; a second flow detection device 405; a rear carbon filter element 406;

a concentrate line 500; a second water intake switch 501; a first check valve 502; a waste water valve 503;

a return line 600; a third control valve 601;

a second water storage container 700; a pressure water storage cavity 701; a pure water chamber 702; a water piping 710.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The utility model relates to a water purification system, which comprises a reverse osmosis filter element 100, a raw water pipeline 200, a pure water pipeline 400, a concentrated water pipeline 500, a water return pipeline 600, a first water storage container 300 and a second water storage container 700.

As shown in fig. 2, the reverse osmosis cartridge 100 is provided with a raw water end 101, a pure water end 102, and a concentrated water end 103. The raw water line 200 is provided with a first control valve 201 and a first pressure increasing device 202. The first control valve 201 may be an electromagnetic valve, and the first pressure increasing device 202 may be a water pump. The first control valve 201 is used to control the flow of water in the raw water line 200. The first water storage container 300 is connected to a water source such as tap water or other water supply system. When the first water storage container 300 is connected to the tap water pipe 302, it is preferable that a pressure reducing valve 301 is installed on the tap water pipe 302. The tail end of the raw water pipeline 200 is connected to the raw water end 101 of the reverse osmosis filter element 100, the head end of the raw water pipeline 200 may be directly connected to the first water storage container 300 (as shown in fig. 2), the head end of the raw water pipeline 200 may also be connected to a tap water pipe 302 of a water source (as shown in fig. 4), and the raw water pipeline 200 is communicated with the first water storage container 300 through the tap water pipe 302. One end of the concentrate pipeline 500 is connected to the concentrate end 103 of the reverse osmosis filter element 100, and the other end is communicated with the first water storage container 300. The pure water pipeline 400 is connected to the pure water end 102 of the reverse osmosis filter element 100, and the tail end of the pure water pipeline 400 is connected to a first water intake switch 402, wherein the first water intake switch 402 may be a water tap or a water intake switch externally connected to a water using device.

The second water container 700 is connected to the pure water pipeline 400, and the water flow between the second water container 700 and the pure water pipeline 400 can be controlled, i.e. the water in the pure water pipeline 400 can flow into the second water container 700, and the water in the second water container 700 can also flow in the pure water pipeline 400 direction under control. In this embodiment, as shown in fig. 1, a pressure water storage chamber 701 with a variable volume may be disposed in the second water storage container 700, and the pressure water storage chamber 701 is connected to the pure water pipeline 400 through a water passing pipeline 710. Wherein, the pressure water storage cavity 701 can be composed of an elastic water bag, and the expansion and contraction are generated according to the increase and decrease of the water quantity by utilizing the elastic action of the elastic water bag; the second water storage container 700 may use a closed housing, the pressure water storage cavity 701 is located in the housing, and air or liquid may be filled between the inner wall of the housing and the pressure water storage cavity 701, so that the pressure water storage cavity 701 is squeezed by air pressure or hydraulic pressure. Alternatively, as shown in fig. 4, a pure water chamber 702 with a constant volume is provided in the second water storage container 700, the pure water chamber 702 is connected to the pure water pipeline 400 through a water passage 710, a third check valve 711 and a second pressure increasing device 712 are provided in parallel on the water passage 710, and the second pressure increasing device 712 may be a pressure increasing pump. The water flowing through the third check valve 711 flows in one direction from the pure water pipe 400 to the pure water chamber 702, and the second pressure increasing device 712 pumps the water in the pure water chamber 702 in the direction of the pure water pipe 400. In the two configurations of the second water storage container 700, as shown in fig. 2 and 4, a second control valve 401 may be provided in the deionized water line 400, and an electromagnetic valve may be used as the second control valve 401. One end of the water return pipeline 600 is connected to the pure water pipeline 400, and the other end is communicated with the first water container 300. The junction of the return line 600 and the pure water line 400 is located at the upstream side of the second control valve 401, and the third control valve 601 is provided on the return line 600, and the third control valve 601 may be an electromagnetic valve or a relief valve. The second water storage tank is connected to the pure water line 400 and the connection point is located on the downstream side of the second control valve 401. The second water intake switch 501 is connected to the first water container 300, and the second water intake switch 501 may be a faucet or other water intake switch of an external water using device.

The water purification system comprises the following working modes (explained by the embodiment of figure 2):

a first normal water making mode: when a user needs to take pure water, the first water taking switch 402 is opened, at this time, the first control valve 201, the first pressure boosting device 202, and the second control valve 401 are opened, the third control valve 601 is closed, and the second water taking switch 501 is also closed. Under the pressurizing and pumping action of the first pressurizing device 202, the water in the first water storage container 300 enters the reverse osmosis filter element 100 through the raw water pipeline 200 and the raw water end 101. The water is filtered to obtain concentrated water and pure water. The concentrated water is discharged from the concentrated water end 103 and flows back to the first water container 300 through the concentrated water pipeline 500. The tap water automatically supplements the water amount in the first water storage container 300, and the tap water and the concentrated water are mixed in the first water storage container 300. Pure water is discharged through the pure water port 102 to the pure water line 400 and then discharged from the first water intake switch 402 for use by the user.

A water storage mode: when the first water intake switch 402 is turned from the open state to the closed state, the first control valve 201, the first pressure booster 202, and the second control valve 401 are kept open, the third control valve 601 is closed, and the second water intake switch 501 is kept closed. The system continues to produce water, and the produced pure water enters the pressure water storage cavity 701 of the second water storage container 700 through the pure water pipeline 400 to be stored, and the pressure water storage cavity 701 expands along with the increase of the water storage quantity. After a certain time, the first control valve 201, the first pressure boosting device 202, and the second control valve 401 are closed, and the system enters a standby state. The pressure water storage cavity 701 is kept in an expansion state

The N (N >1) th normal water production mode: when the first water intake switch 402 is turned from the closed state to the open state, initially within a certain time, the first control valve 201, the third control valve 601, the first pressure boosting device 202 are opened, the second control valve 401 is closed, and the second water intake switch 501 is also in the closed state; in the open state of the first water intake switch 402, the pressure in the pressure water storage chamber 701 is released, the pressure water storage chamber 701 contracts, and the pure water stored therein flows into the pure water line 400 and is discharged from the first water intake switch 402 to be used by the user. Meanwhile, the pure water produced by the reverse osmosis filter element 100 enters the first water storage container 300 through the water return pipeline 600, which is equivalent to treating the water (first cup of water) with a high TDS value at the pure water end 102 in the reverse osmosis filter element 100 and recycling the water into the first water storage container 300. After a certain time, the second control valve 401 is opened, the third control valve 601 is closed, and the pure water produced by the reverse osmosis filter element 100 is discharged through the pure water pipeline 400 and the first water intake switch 402 for the user to use.

When the first water intake switch 402 is turned off, the system enters the water storage mode, thereby cycling between the water storage mode and the nth normal water production mode.

In the concentrated water taking mode, the second water taking switch 501 is turned on, and the water in the second water storage container 700 is discharged through the second water taking switch 501 for the user to use tap water/concentrated water/mixed water. In this mode, on the one hand, the user can directly use the concentrate, and on the other hand, when the concentrate is taken, the tap water is supplemented into the first water storage container 300, and the TDS value of the concentrate is reduced.

In the system configuration shown in fig. 1, when the first water intake switch 402 is turned off, the system produces water, and the produced pure water enters the second water storage container 700 through the pure water pipe 400 to be stored. When the first water intake switch 402 is turned on, the pure water stored in the second water storage container 700 flows into the pure water pipeline 400 and is mixed with the water of the 'first cup of water' on the pure water pipeline 400, so that the TDS value of the 'first cup of water' is diluted, and the drinking water requirement is met.

The second water storage container 700 shown in fig. 4 is configured based on the system configuration of fig. 1 or fig. 2, and water in the pure water pipeline 400 can flow into the second water storage container 700 in one direction through the third check valve 711 of the water passing pipeline 710 and be stored to a full water state; when the first water intake switch 402 is turned on and the second water storage container 700 is needed to supply water to the pure water pipeline 400, the second pressurizing device 712 is turned on to pump the water in the second water storage container 700 to the pure water pipeline 400, so as to realize the mixing dilution of the pure water and the "first cup of water" of the second water storage container 700 in fig. 1 to reduce the TDS value, or realize the initial "first cup of water" in fig. 2 to flow back to the first water storage container 300, and provide the pure water to the user through the second water storage container 700.

According to the utility model, the problem of high concentration value of the 'first cup of water' is solved by matching the components such as the second control valve 401, the water return pipeline 600, the first water storage container 300 and the second water storage container 700, the concentrated water is refluxed, the waste of water resources caused by direct discharge of the concentrated water is reduced, the 'first cup of water' is recycled, meanwhile, pure water is provided for a user by using the second water storage container 700, or the concentration of the first cup of water is diluted by using the stored water of the second water storage container, the taking of the pure water by the user is not influenced in the process, the system does not need to automatically treat the 'first cup of water' at regular intervals, and the treatment is only carried out when the user takes the pure water.

As shown in fig. 4, the end portions of the rich water pipeline 500 and the return water pipeline 600 communicating with the first water storage container 300 may be directly connected to the first water storage container 300, or as shown in fig. 2 and 3, the rich water pipeline 500 and the return water pipeline 600 may be connected to the joining pipeline 303 and connected to the first water storage container 300 through the joining pipeline 303. As shown in fig. 4, the second water intake switch 501 may be directly connected to the first water storage container 300 through a water pipe, and as shown in fig. 2, the second water intake switch 501 may be connected to the confluence pipeline 303.

In some embodiments of the present invention, the water purification system further comprises a water quality detection device 304, wherein the water quality detection device 304 is used for detecting the water quality of the water in the first water storage container 300, mainly detecting the TDS value of the water in this embodiment, and detecting other indicators of the water according to the use requirement. In this embodiment, the water quality detecting device 304 may be disposed in the first water storage container 300 (as shown in fig. 2), or may be disposed on the raw water pipeline 200 (as shown in fig. 4). The first water storage tank 300 is communicated with a drain pipe 305, and the drain pipe 305 may be directly connected to the first water storage tank 300, may be connected to the confluence pipe 303, or may be connected to the concentrate pipe 500. The drain line 305 is provided with a fourth control valve 306, and the fourth control valve 306 may be an electromagnetic valve. When the water quality detecting device 304 detects that the TDS value or other indicators of the water in the first water storage container 300 exceed a set value before entering the raw water end 101, the fourth control valve 306 is opened, and the water in the first water storage container 300 is discharged through the water discharge pipeline 305. Tap water is replenished into the first water storage container 300, thereby reducing the water concentration in the first water storage container 300.

Further, a first flow rate detecting device 307 is disposed at a water return end of the first water storage container 300, where the water return end is a connection end of the confluence pipeline 303 and the first water storage container 300, or a connection end of the concentrated water pipeline 500 and the first water storage container 300. The first flow rate detection device 307 detects the amount of the rich water flowing back into the first water storage container 300. When the backflow amount of the concentrated water exceeds a set value, the fourth control valve 306 is opened to discharge the water in the first water storage container 300, so as to avoid overhigh TDS value of the water in the first water storage container 300.

In the present invention, as shown in fig. 2 and fig. 4, the first water storage container 300 and the second water storage container 700 may be independent containers, or the first water storage container 300 and the second water storage container 700 may be integrated together to form a water storage device, which is equivalent to integrating the pressure water storage cavity 701 (as shown in fig. 3) or the pure water cavity 702 into the cavity of the first water storage container 300; the water pressure of the first water storage container 300 acts on the outer wall of the pressure water storage cavity 701 (as shown in fig. 3), or the pure water cavity 702 is pumped by the second pressurization device 712. The integration of the first water storage container 300 and the second water storage container 700 can reduce the structural cost and the space occupation of the system.

In some embodiments of the present invention, a first check valve 502 and a waste water valve 503 are disposed on the concentrate pipeline 500, the first check valve 502 controls the water in the raw water pipeline 200 to flow in one direction in the first water storage container 300, and the waste water valve 503 controls the flow rate of the water in the concentrate pipeline 500.

In some embodiments of the present invention, the pure water pipeline 400 is provided with a second check valve 403 and a pressure detection device 404, the second check valve 403 is disposed adjacent to the pure water end 102, and the second check valve 403 ensures that water supplied to the pure water pipeline 400 does not flow back toward the pure water end 102; the pressure detection device 404 is disposed adjacent to the first water intake switch 402, that is, the pressure detection device 404 is located on the downstream side of the connection point of the pressure water storage chamber 701 and the pure water line 400. The pressure detecting device 404 is used to detect the water pressure in the pure water pipeline 400, so as to monitor the open/close state of the first water intake switch 402 and the water storage pressure of the pressure water storage chamber 701, thereby controlling the water purification system to enter the corresponding mode. That is, when the first water intake switch 402 is turned from on to off, the water is discharged from the first water intake switch 402 and enters the second water storage container 700, the pressure monitoring device monitors that the pressure on the pure water pipeline 400 gradually increases until the second water storage container 700 is full of water, the water pressure of the pure water pipeline 400 reaches a maximum value, or the pressure monitoring device 404 is set to a certain value, and then a signal is fed back to the system, so that the water purification system enters a standby state.

In some embodiments of the present invention, the plain water pipe 400 is provided with a second flow rate detecting device 405, and the second flow rate detecting device 405 is located downstream of the junction of the pressure water storage chamber 701 and the plain water pipe 400. The second flow rate detection means 405 is for detecting the amount of water discharged through the first water intake switch 402. When the first water intake switch 402 is turned on, the water in the second water container 700 is discharged to the first water intake switch 402 for use; when the water in the second water container 700 decreases or the amount of water flowing through the second flow rate detection device 405 reaches a certain value, the feedback system opens the second control valve 401, closes the third control valve 601, and enters normal water production.

In some embodiments of the present invention, the raw water pipeline 200 is provided with a composite filter element 203, and the raw water is purified once before entering the reverse osmosis filter element 100; the pure water pipeline 400 is provided with a post-carbon filter element 406, and the mouth feel of the pure water is improved by utilizing the post-carbon filter element 406.

The electric devices such as the first control valve 201, the first pressure boosting device 202, the second control valve 401 are connected with the controller of the water purification system for automatic control.

In the description herein, references to the description of a particular embodiment or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A water purification system, characterized in that includes:

the reverse osmosis filter element (100) is provided with a raw water end (101), a pure water end (102) and a concentrated water end (103);

the raw water pipeline (200) is connected with the raw water end (101), and a first control valve (201) and a first supercharging device (202) are arranged on the raw water pipeline (200);

the first water storage container (300) is communicated with a water source, and the first water storage container (300) is communicated with the raw water pipeline (200);

the pure water pipeline (400) is connected with the pure water end (102), and a first water taking switch (402) positioned at the tail end is arranged on the pure water pipeline (400);

a concentrate line (500) connected to the concentrate end (103), the concentrate line (500) being in communication with the first water reservoir (300);

the second water storage container (700), the second water storage container (700) and the pure water pipeline (400) are in controllable water circulation;

And a second water intake switch (501) that communicates with the first water storage container (300).

2. The water purification system of claim 1, wherein: the second water storage container (700) is provided with a pressure water storage cavity (701) with variable volume, and the pressure water storage cavity (701) is communicated with the pure water pipeline (400) through a water passing pipeline (710).

3. The water purification system of claim 1, wherein: the water purifier is characterized in that a pure water cavity (702) is arranged in the second water storage container (700), the pure water cavity (702) is connected with the pure water pipeline (400) through a water passing pipeline (710), a third one-way valve (711) and a second pressurizing device (712) are arranged on the water passing pipeline (710) in parallel, water flowing through the third one-way valve (711) flows from the pure water pipeline (400) to the pure water cavity (702) in a one-way mode in the direction, and the water in the pure water cavity (702) is pumped to the pure water pipeline (400) by the second pressurizing device (712).

4. The water purification system of claim 1, 2 or 3, wherein: still include return water pipeline (600), be equipped with second control valve (401) on pure water pipeline (400), the one end of return water pipeline (600) is connected on pure water pipeline (400) and connect in the upstream side of second control valve (401), the other end with first water storage container (300) intercommunication, be equipped with third control valve (601) on return water pipeline (600), second water storage container (700) with pure water pipeline (400) are connected and connect in the downstream side of second control valve (401).

5. The water purification system of claim 4, wherein: the first water storage container (300) is connected with a confluence pipeline (303), and the concentrated water pipeline (500) and the water return pipeline (600) are connected to the confluence pipeline (303).

6. The water purification system of claim 5, wherein: the water quality detection device (304) for detecting water in the first water storage container (300) is further arranged, the first water storage container (300) is communicated with a water drainage pipeline (305), and a fourth control valve (306) is arranged on the water drainage pipeline (305).

7. The water purification system of claim 6, wherein: a first flow detection device (307) is arranged at a water return end of the first water storage container (300), and the first flow detection device (307) is used for detecting the amount of the concentrated water flowing back into the first water storage container (300).

8. The water purification system of claim 1, 2 or 3, wherein: the first water storage container (300) and the second water storage container (700) are integrated into a water storage device.

9. The water purification system of claim 1, wherein: the concentrated water pipeline (500) is provided with a first one-way valve (502) and a waste water valve (503), the first one-way valve (502) controls water on the raw water pipeline (200) to flow in a one-way mode towards the first water storage container (300), and the waste water valve (503) controls the water flow on the concentrated water pipeline (500).

10. The water purification system of claim 1, 2 or 3, wherein: the pure water pipeline (400) is provided with a second one-way valve (403) and a pressure detection device (404), the second one-way valve (403) is arranged close to the pure water end (102), and the pressure detection device (404) is arranged close to the first water taking switch (402).

11. The water purification system of claim 10, wherein: and a second flow detection device (405) is arranged on the pure water pipeline (400), and the second flow detection device (405) is positioned at the downstream of the joint of the second water storage container (700) and the pure water pipeline (400).