Hydrogen-containing water preparation system

Abstract

The utility model discloses a hydrogen-containing water preparation system which comprises a water supply unit used for providing drinking water; the hydrogen-containing water preparation branch comprises a hydrogen water electrolytic tank and is used for preparing hydrogen-containing water; the raw water branch is arranged in parallel with the hydrogen-containing water preparation branch and is used for draining the raw drinking water; the control valve unit is connected with the water supply unit, the hydrogen-containing water preparation branch and the raw water branch, and is used for controlling the water supply unit to supply water to the hydrogen-containing water preparation branch or the raw water branch; the water quality sensor is used for detecting the water quality of the hydrogen-containing water production branch, and the control valve unit and the water quality sensor are in linkage control; and the water taking unit is connected with the hydrogen-containing water preparation branch and the raw water branch and is used for a user to take water. The hydrogen-containing water preparation system provided by the utility model can be combined with the existing household water purifier for use, and can effectively avoid the problem that the electrode plates of the electrolytic bath are easily polluted due to unstable effluent quality of the water purifier.

Description

Technical Field

[0001] The present application relates to the technical field of drinking water treatment equipment, and particularly to a hydrogen-rich water preparation system. Background Art

[0002] With the increasing emphasis on health by people, the consumption of hydrogen-rich water has become more and more popular among the public. Many families are equipped with water purifiers at home to purify drinking water, but the function of producing hydrogen-rich water has not been widely applied to water purifiers. One important reason is that the hydrogen electrolytic cell has extremely high requirements for the purity of water. When the purity of the water injected into the electrolytic cell is insufficient, it will accelerate the problem of pollution of the electrode plates of the electrolytic cell. Specifically, the working principle of the hydrogen electrolytic cell involves the process of electrolyzing water, and the electrode plates play a key role in this process. If the water quality injected into the electrolytic cell is impure, the impurities, minerals or other pollutants contained in it will be deposited on the electrode plates during the electrolysis process, resulting in electrode pollution, which in turn affects the electrolysis efficiency and the quality of hydrogen production. In the long run, the pollution of the electrode plates will also shorten their service life and increase the maintenance cost. The water purification effect of conventional household water purifiers has certain limitations. Although household water purifiers can purify tap water to a certain extent, their water purification effect is affected by various factors, including the type, quality, service life of the filter element and the water quality of the tap water itself. After long-term use of the filter element, its adsorption and filtration capabilities will gradually decline, resulting in a weakened water purification effect. In addition, the differences in tap water quality in different regions may also affect the purification effect of the water purifier. Therefore, directly combining the electrolytic cell with the existing water purifier will result in the problem that the electrode plates of the electrolytic cell are easily contaminated due to the unstable quality of the water output from the water purifier. Summary of the Utility Model

[0003] The purpose of the embodiments of the present utility model is to provide a hydrogen-rich water preparation system, which can solve the above problems existing in the prior art.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] A hydrogen-rich water preparation system, comprising:

[0006] A water supply unit for providing drinking water;

[0007] A hydrogen-rich water production branch including a hydrogen electrolytic cell for producing hydrogen-rich water;

[0008] A raw water branch, arranged in parallel with the hydrogen-rich water production branch, for diverting the original drinking water;

[0009] A control valve unit, connected to the water supply unit, the hydrogen-rich water production branch and the raw water branch, for controlling the water supply unit to supply water to the hydrogen-rich water production branch or the raw water branch;

[0010] A water quality sensor is used to detect the water quality of the hydrogen-containing water production branch, and the control valve unit is linked with the water quality sensor for control.

[0011] A water intake unit is connected to the hydrogen-containing water production branch and the raw water branch for users to take water.

[0012] Optionally, the control valve unit includes a normally open solenoid valve and a normally closed solenoid valve. The normally open solenoid valve is connected to the raw water branch, the normally closed solenoid valve is connected to the hydrogen-containing water production branch, and the normally open solenoid valve and the normally closed solenoid valve are interlocked.

[0013] Optionally, a booster pump is provided in the hydrogen-containing water production branch.

[0014] Optionally, the booster pump is arranged at the front end of the normally closed solenoid valve; a bypass pipe is also connected between the normally closed solenoid valve and the front end of the normally open solenoid valve, and a non-pressure one-way valve is arranged at the front end of the raw water branch where it is located on the bypass pipe.

[0015] Optionally, a filter is provided in the hydrogen-containing water production branch at the front end of the hydrogen electrolyzer, and the water quality sensor is arranged between the filter and the hydrogen electrolyzer.

[0016] Optionally, the water supply unit includes a water supply main line connected to the hydrogen-containing water production branch and the raw water branch, and a flow sensor is arranged on the water supply main line.

[0017] Optionally, the control valve unit includes a two-way three-way valve. The inlet of the two-way three-way valve is connected to the water supply unit, and the two outlets are respectively connected to the hydrogen-containing water production branch and the raw water branch.

[0018] Optionally, the water intake unit includes a water intake main line connected to the hydrogen-containing water production branch and the raw water branch, and a high-pressure switch is arranged on the water intake main line. The high-pressure switch is electrically interconnected with the control valve unit and the hydrogen electrolyzer.

[0019] Optionally, it includes an electric control switch, and the electric control switch is electrically interconnected with the hydrogen electrolyzer.

[0020] Optionally, it further includes an alarm indicator, and the alarm indicator is electrically interconnected with the water quality sensor.

[0021] The beneficial effects of the present application are as follows: The present utility model provides a hydrogen-rich water preparation system, which can be incorporated into an existing household water purifier and can effectively avoid the problem that the electrode plates of the electrolytic cell are easily contaminated due to the unstable quality of the water output from the water purifier. The hydrogen-rich water preparation system of this solution includes components such as a hydrogen-rich water preparation branch, a raw water branch, a control valve unit, and a water quality sensor. The water quality sensor is used to detect the water quality in the hydrogen-rich water preparation branch and is linked with the control valve unit for control. When it is detected that the water quality of the water to be electrolyzed does not meet the standard, the control valve unit controls to stop supplying water to the hydrogen-rich water preparation branch and instead supply water to the raw water branch, avoiding the problem that the water with unqualified quality is electrolyzed in the hydrogen electrolytic cell and causing electrode plate pollution. Moreover, the originally purified water can flow to the water intake unit through the raw water branch, without hindering the user from taking water from the water intake unit. Description of the Drawings

[0022] The following further elaborates on the present application in detail based on the drawings and embodiments.

[0023] Figure 1 It is a schematic structural diagram of the hydrogen-rich water preparation system described in the embodiment of the present application.

[0024] In the figure:

[0025] 1. Water supply unit; 11. Water supply main line; 12. Flow sensor; 2. Hydrogen-rich water preparation branch; 21. Hydrogen electrolytic cell; 22. Filter; 23. Water quality sensor; 24. Pressure maintaining check valve; 25. Hydrogen water flow limiting valve; 26. Waste water flow limiting valve; 27. Waste water check valve; 3. Raw water branch; 31. Non-pressure check valve; 32. Bypass pipe; 4. Water intake unit; 41. Water intake main line; 42. High-pressure switch; 5. Control valve unit; 51. Normally open solenoid valve; 52. Normally closed solenoid valve; 6. Booster pump. Detailed Embodiment

[0026] To make the technical problems solved by the present application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present application are further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0027] In the description of the present application, unless otherwise clearly specified or limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0029] As people's attention to health gradually increases, the consumption of hydrogen-rich water is becoming more and more popular among the public. Many families will equip water purifiers at home to purify drinking water, but the function of producing hydrogen-rich water has not been widely applied to water purifiers. One important reason is that the hydrogen electrolytic cell has extremely high requirements for the purity of water. When the purity of the water injected into the electrolytic cell is insufficient, it will accelerate the problem of pollution of the electrode plates of the electrolytic cell. Specifically, the working principle of the hydrogen electrolytic cell involves the process of electrolyzing water, and the electrode plates play a key role in this process. If the water quality injected into the electrolytic cell is impure, the impurities, minerals or other pollutants contained in it will be deposited on the electrode plates during the electrolysis process, resulting in electrode pollution, and then affecting the electrolysis efficiency and the quality of hydrogen production. In the long run, the pollution of the electrode plates will also shorten their service life and increase the maintenance cost. However, the water purification effect of conventional household water purifiers has certain limitations. Although household water purifiers can purify tap water to a certain extent, their water purification effect is affected by various factors, including the type, quality, service life of the filter element, and the water quality of the tap water itself. After long-term use, the adsorption and filtration capacity of the filter element will gradually decline, resulting in a weakened water purification effect. In addition, the water quality differences of tap water in different regions may also affect the purification effect of the water purifier. Therefore, directly combining the electrolytic cell into the existing water purifier will cause the problem that the electrode plates of the electrolytic cell are easily polluted due to the unstable water quality of the water purifier's effluent.

[0030] In order to overcome the above technical problems, with reference to Figure 1, this embodiment provides a hydrogen-rich water preparation system, including a water supply unit 1, a hydrogen-rich water preparation branch 2, a raw water branch 3, a control valve unit 5, a water quality sensor 23, etc.

[0031] Among them, the water supply unit 1 is used to provide drinking water; specifically, it can be an existing water purifier, which filters tap water and then supplies it to the hydrogen electrolyzer 21.

[0032] The hydrogen-rich water preparation branch 2 includes a hydrogen electrolyzer 21 for preparing hydrogen-rich water.

[0033] The raw water branch 3 is arranged in parallel with the hydrogen-rich water preparation branch 2 for diverting the original drinking water.

[0034] The control valve unit 5 is connected to the water supply unit 1, the hydrogen-rich water preparation branch 2, and the raw water branch 3, and is used to control the water supply unit 1 to supply water to the hydrogen-rich water preparation branch 2 or the raw water branch 3.

[0035] The water quality sensor 23 is used to detect the water quality of the hydrogen-rich water preparation branch 2, and the control valve unit 5 is linked and controlled with the water quality sensor 23.

[0036] The water intake unit 4 is connected to the hydrogen-rich water preparation branch 2 and the raw water branch 3 for users to take water.

[0037] To achieve automatic control, the hydrogen-rich water preparation system of this embodiment further includes an electronic control main board. The water quality sensor 23 and the control valve unit 5 are both connected to the electronic control main board. The water quality sensor 23 uploads the water quality detection result to the electronic control main board, and the electronic control main board issues a control signal to the control valve unit 5 according to the water quality detection result. When the water quality meets the electrolysis purity requirement, it controls to supply water to the hydrogen-rich water preparation branch 2 alone; when the water quality does not meet the electrolysis purity requirement, it controls to supply water to the raw water branch 3 alone. Among them, the hydrogen electrolyzer 21 can also be connected to the electronic control main board and controlled by it. When the control valve unit 5 controls to supply water to the hydrogen-rich water preparation branch 2, the hydrogen electrolyzer 21 is opened at the same time.

[0038] In summary, the hydrogen-rich water preparation system of this embodiment can be incorporated into an existing household water purifier, and can effectively avoid the problem that the electrode plates of the electrolytic cell are easily contaminated due to the unstable water quality of the water purifier's outlet water. The hydrogen-rich water preparation system of this solution includes components such as a hydrogen-rich water preparation branch 2, a raw water branch 3, a control valve unit 5, and a water quality sensor 23. The water quality sensor 23 is used to detect the water quality in the hydrogen-rich water preparation branch 2, and it is linked with the control valve unit 5. When it is detected that the water quality of the water to be electrolyzed does not meet the standard, the control valve unit 5 controls to stop supplying water to the hydrogen-rich water preparation branch 2 and instead supply water to the raw water branch 3, avoiding the problem that the water with unqualified quality is electrolyzed in the hydrogen electrolytic cell 21 and causing electrode plate pollution. Moreover, the originally purified water can flow through the raw water branch 3 to the water intake unit 4, without hindering the user from taking water from the water intake unit 4.

[0039] Among them, the hydrogen electrolytic cell 21 includes an anode chamber and a cathode chamber. The anode chamber electrolyzes to produce oxygen-containing wastewater, and the cathode chamber electrolyzes to generate hydrogen-rich water. The oxygen-containing wastewater generated in the anode chamber is directly discharged to the outside through a drainage pipeline. Optionally, a wastewater flow-limiting valve 26 is provided in the drainage pipeline. Setting the wastewater flow-limiting valve 26 can limit the wastewater drainage speed to maintain the pressure inside the hydrogen electrolytic cell 21. A wastewater check valve 27 is also provided in the drainage pipeline. The wastewater check valve 27 opens unidirectionally towards the outside, preventing dirt or bacteria from entering the hydrogen electrolytic cell 21 from the drainage pipeline. The cathode teeth are connected to the water intake unit 4 through a hydrogen water pipeline, and the generated hydrogen-rich water can flow to the water intake unit 4 through the hydrogen water pipeline. Optionally, a hydrogen water flow-limiting valve 25 is provided in the hydrogen water pipeline. The hydrogen water flow-limiting valve 25 can limit the hydrogen water drainage speed to maintain the pressure inside the hydrogen electrolytic cell 21.

[0040] In one embodiment, the control valve unit 5 includes a normally open solenoid valve 51 and a normally closed solenoid valve 52. The normally open solenoid valve 51 is connected to the raw water branch 3, and the normally closed solenoid valve 52 is connected to the hydrogen-rich water preparation branch 2. The normally open solenoid valve 51 and the normally closed solenoid valve 52 are interconnected and locked.

[0041] The normally open solenoid valve 51 remains open when not activated (i.e., without an electrical signal), allowing water flow through. The normally open solenoid valve 51 is connected to the raw water branch 3, which means that by default, the raw water branch 3 is unobstructed, and the raw water can directly flow to the water intake unit 4 for user use. In contrast to the normally open solenoid valve 51, the normally closed solenoid valve 52 remains closed when not activated, blocking water flow through. The normally closed solenoid valve 52 is connected to the hydrogen-rich water preparation branch 2, ensuring that the electrolytic cell does not receive any water source without permission, thus preventing possible pollution or accidental electrolysis.

[0042] When the system starts, the normally open solenoid valve 51 remains open, allowing the raw water to flow towards the water intake unit 4; the normally closed solenoid valve 52 remains closed, preventing water from flowing towards the electrolytic cell. The water quality sensor 23 starts to detect the water quality of the hydrogen-containing water production branch 2. If the water quality sensor 23 detects that the water quality meets the electrolysis purity requirements, the electronic control main board will send an opening signal to the normally closed solenoid valve 52 and a closing signal to the normally open solenoid valve 51. At this time, the water is guided to the hydrogen-containing water production branch 2 for electrolysis treatment. If the water quality does not meet the requirements, the electronic control main board will keep the normally closed solenoid valve 52 closed and the normally open solenoid valve 51 open, ensuring that the raw water directly flows towards the water intake unit 4 and avoiding polluting the electrolytic cell.

[0043] In one embodiment, a booster pump 6 is provided in the hydrogen-containing water production branch 2.

[0044] Setting the booster pump 6 can increase the water flow pressure entering the hydrogen electrolytic cell 21. During the process of producing hydrogen-containing water by electrolyzing water, a higher water flow pressure helps to improve the electrolysis efficiency, making the electrolysis process faster and more thorough.

[0045] In one embodiment, the booster pump 6 is provided at the front end of the normally closed solenoid valve 52; a bypass pipe 32 is also connected to the front ends of the normally closed solenoid valve 52 and the normally open solenoid valve 51. A non-pressure one-way valve 31 is further provided at the front end of the raw water branch 3 where the bypass pipe 32 is located.

[0046] Specifically, the bypass pipe 32 is connected to the rear end of the booster pump 6. The setting of the bypass pipe 32 allows, when the detected water quality does not meet the electrolysis requirements and water can only be transported out through the raw water branch 3, to choose whether to turn on the booster pump 6 for pressurization according to needs. When it is necessary to increase the water outlet speed, the booster pump 6 can be turned on. When the original water pressure is sufficient or there is no need to increase the water outlet speed, the pump can be kept closed, and the water can automatically flow into the raw water branch 3 through the non-pressure one-way valve 31. The function of the non-pressure one-way valve 31 is to prevent the water flow from flowing reversely when not needed, ensuring that the water flow can only flow in the set direction (i.e., towards the water intake unit 4). At the same time, since it is non-pressure, even if the water flow pressure is small, the water can freely flow through it into the raw water branch 3.

[0047] In one embodiment, a filter 22 is provided in the hydrogen-containing water production branch 2 at the front end of the hydrogen electrolytic cell 21, and the water quality sensor 23 is provided between the filter 22 and the hydrogen electrolytic cell 21.

[0048] Setting the filter 22 at the front end of the hydrogen electrolytic cell 21 can further remove impurities in the water, ensuring that the water quality entering the electrolytic cell is as pure as possible. Setting the water quality sensor 23 between the filter 22 and the hydrogen electrolytic cell 21 can ensure that the water quality monitored by the water quality sensor 23 is the water quality after filtration treatment, thus more accurately reflecting the water quality condition about to enter the electrolytic cell.

[0049] When the filter 22 is not additionally provided, the water quality sensor 23 can be arranged in the water supply main pipeline 11 of the water supply unit 1.

[0050] In one embodiment, the water supply unit 1 includes a water supply main pipeline 11 connected to the hydrogen-containing water production branch 2 and the raw water branch 3, and a flow sensor 12 is arranged on the water supply main pipeline 11.

[0051] A flow sensor 12 is arranged on the water supply main pipeline 11 for monitoring the water flow rate passing through the main pipeline in real time. The flow sensor 12 can accurately measure the water flow rate and transmit the data to the electronic control main board for processing, which is used to test whether there is water flow in the water circuit and assist in judging whether water is being taken or there is a water shortage during water intake.

[0052] Regarding the setting of the control valve unit 5, in another embodiment, the control valve unit 5 includes a two-position three-way valve, and the inlet of the two-position three-way valve is connected to the water supply unit 1, and the two outlets are respectively connected to the hydrogen-containing water production branch 2 and the raw water branch 3.

[0053] The two-position three-way valve has one inlet and two outlets and can control the water flow direction as needed. In this system, its inlet is connected to the water supply unit 1, and the two outlets are respectively connected to the hydrogen-containing water production branch 2 and the raw water branch 3. By switching the valve state, the water flow can be flexibly selected to be directed to electrolytic treatment or directly output the raw water. Compared with the multiple valve combination control scheme, the two-position three-way valve greatly simplifies the system structure and control logic. It reduces the number of valves and potential failure points, and improves the reliability and stability of the system.

[0054] In one embodiment, the water intake unit 4 includes a water intake main pipeline 41 connected to the hydrogen-containing water production branch 2 and the raw water branch 3, a high-voltage switch 42 is arranged on the water intake main pipeline 41, and the high-voltage switch 42 is electrically interconnected with the control valve unit 5 and the hydrogen electrolysis cell 21.

[0055] Specifically, the high-pressure switch 42 can feedback the pressure in the water intake main pipeline 41. According to the function of the switch of the pressure control system, it is connected to the electronic control main board of the system and can realize the function of automatically starting the hydrogen water electrolyzer 21 when taking water. The high-pressure switch 42 is arranged in the water intake main pipeline 41. When the water intake unit 4 is closed, under the action of high water pressure, the switch of the high-pressure switch 42 is disconnected and the system does not work; when the user takes water at the water intake unit 4, the pipeline pressure is relieved, the high-pressure switch 42 is closed, and the system starts to work, that is, components such as the water quality sensor 23, the solenoid valve unit, and the electrolyzer work. Through the interconnection of the high-pressure switch 42 and the electronic control main board in this solution, the intelligent and automatic control of the system is realized. When the user takes water, the system automatically starts to work without manual intervention. The system only starts to work when the user takes water, avoiding unnecessary energy consumption and waste.

[0056] In a further embodiment, a pressure maintaining check valve 24 is arranged at the front end of the cathode chamber of the hydrogen water electrolyzer 21. When the system controls the on-off of the circuit through the high-pressure switch 42, the pressure maintaining check valve 24 can be used to protect the water pressure in the cathode chamber.

[0057] In another implementation manner, the system includes an electric control switch, and the electric control switch is electrically interconnected with the hydrogen water electrolyzer 21.

[0058] That is, the opening and closing of the hydrogen water preparation work is controlled by the electric control switch. When the user takes water, the hydrogen water electrolyzer 21 can be triggered to generate hydrogen-containing water by triggering the electric control switch. When the electric control switch is not triggered, the system is not powered on, and the water can only pass through the normally open raw water branch 3 to the water intake unit 4. It should be noted that the water quality sensor 23 and the control valve unit 5 provided in this solution are the self-protection structures of the system. When the user triggers the electric control switch to select hydrogen-containing water, the system will first automatically detect the water quality and then control whether to start the control valve unit 5 and the hydrogen water electrolyzer 21 according to the detection result. When the detection is unqualified, the user can still only obtain the hydrogen-free water output from the raw water branch 3. With the electric control switch control, the user can choose whether to prepare hydrogen-containing water at any time according to their own needs and actual situations. For example, when hydrogen-containing water is not needed, the electric control switch can be selected to be closed, and the water can directly flow through the normally open raw water branch 3 to the water intake unit 4; when hydrogen-containing water is needed, the electric control switch is triggered to start the hydrogen water electrolyzer 21 for preparation.

[0059] Among them, the electric control switch can be set to directly control the power supply on-off of the hydrogen water electrolyzer 21, or it can be set to be connected to the electronic control main board. When triggered, the electronic control main board sends a start signal to the hydrogen water electrolyzer 21.

[0060] In an embodiment, an alarm indicator is further included, and the alarm indicator is electrically interconnected with the water quality sensor 23.

[0061] Specifically, when the user selects to use hydrogen-rich water and the water quality is detected to be unqualified, while directly outputting the raw water, an alarm indicator can be activated to send an alarm to the user through sound, light or other means, clearly informing the user that the current water quality cannot be used to prepare hydrogen-rich water. Through timely and accurate alarm prompts, the user can learn about the water quality situation in the first place, and thus make more reasonable choices, such as checking and replacing the filter element of the water purifier, etc.

[0062] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0063] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0064] In addition, it should be understood that although this specification is described according to the implementation manners, not every implementation manner only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

[0065] The technical principle of this application has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of this application and cannot be interpreted in any way as a limitation to the protection scope of this application. Based on the explanations here, those skilled in the art can think of other specific implementation manners of this application without creative efforts, and these manners will all fall within the protection scope of this application.

Claims

1. A hydrogen water preparation system, characterized in that: include: A water supply unit (1) for providing drinking water; A hydrogen-containing water production branch (2) includes a hydrogen-containing water electrolyzer (21) for producing hydrogen-containing water; A raw water branch (3) is arranged in parallel with the hydrogen-containing water production branch (2) and is used to drain raw drinking water; a control valve unit (5), connected to the water supply unit (1), the hydrogen-containing water production branch (2) and the raw water branch (3), and used for controlling the water supply unit (1) to supply water to the hydrogen-containing water production branch (2) or the raw water branch (3); A water quality sensor (23) is used to detect the water quality of the hydrogen-containing water production branch (2), and the control valve unit (5) is controlled in linkage with the water quality sensor (23); The water intake unit (4) is connected to the hydrogen-containing water production branch (2) and the raw water branch (3) and is used for users to take water.

2. The hydrogen-containing water preparation system according to claim 1, characterized in that: The control valve unit (5) comprises a normally open solenoid valve (51) and a normally closed solenoid valve (52); the normally open solenoid valve (51) is connected to the raw water branch (3); the normally closed solenoid valve (52) is connected to the hydrogen-containing water branch (2); the normally open solenoid valve (51) and the normally closed solenoid valve (52) are interlocked.

3. The hydrogen-containing water preparation system according to claim 2, characterized in that: The hydrogen-containing water production branch (2) is provided with a booster pump (6).

4. The hydrogen-containing water preparation system according to claim 3, characterized in that: The boost pump (6) is arranged at the front end of the normally closed solenoid valve (52); the front ends of the normally closed solenoid valve (52) and the normally open solenoid valve (51) are also connected to a bypass pipe (32); and the raw water branch (3) is also provided with a pressure-free one-way valve (31) at the front end of the bypass pipe (32).

5. The hydrogen-containing water preparation system according to claim 1, characterized in that: The hydrogen-containing water production branch (2) is provided with a filter (22) located at the front end of the hydrogen-water electrolysis tank (21), and the water quality sensor (23) is arranged between the filter (22) and the hydrogen-water electrolysis tank (21).

6. The hydrogen-containing water preparation system according to claim 1, characterized in that: The water supply unit (1) comprises a water supply trunk line (11) connected to the hydrogen-containing water production branch line (2) and the raw water branch line (3), and the water supply trunk line (11) is provided with a flow sensor (12).

7. The hydrogen-containing water preparation system according to claim 1, characterized in that: The control valve unit (5) comprises a two-position three-way valve, the inlet of the two-position three-way valve is connected to the water supply unit (1), and the two outlets are respectively connected to the hydrogen-containing water production branch (2) and the raw water branch (3).

8. The hydrogen-containing water preparation system according to claim 1, characterized in that: The water intake unit (4) comprises a water intake trunk line (41) connected to the hydrogen-containing water production branch line (2) and the raw water branch line (3); the water intake trunk line (41) is provided with a high-voltage switch (42); the high-voltage switch (42) is electrically interconnected with the control valve unit (5) and the hydrogen-water electrolyzer (21).

9. The hydrogen-containing water preparation system according to claim 1, characterized in that: It comprises an electric control switch, and the electric control switch is electrically interconnected with the hydrogen-water electrolyzer (21).

10. The hydrogen-containing water preparation system according to claim 1, characterized in that: It also includes an alarm prompter, which is electrically connected to the water quality sensor (23).

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