Waterway board and water purification waterway system

By designing an adjustable wastewater ratio valve on the water circuit board to regulate the wastewater flow rate, the problem of traditional water purification equipment being unable to adjust the wastewater ratio is solved, enabling flexible adjustment of purified water with different mineral contents and improving the applicability of the water purification system.

CN223861481UActive Publication Date: 2026-02-03NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Application Number
CN202520435034.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-02-03
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

Traditional water purification equipment has a fixed orifice diameter for the wastewater compared to the solenoid valve, which is difficult to adjust. This results in a relatively stable TDS (Total Dissolved Solids) in the purified water, which cannot meet the diverse mineral content requirements of different groups of people.

Method used

Design a water circuit board with a built-in wastewater ratio adjustable valve. The flow rate of the wastewater passage is adjusted by rotating the valve core of the adjustable wastewater ratio valve, so as to switch between different orifice sizes and adjust the wastewater flow rate to obtain purified water with different mineral contents.

Benefits of technology

It enables flexible adjustment of wastewater flow rate, meets the mineral content requirements of different users, and improves the applicability and flexibility of the water purification system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223861481U_ABST
Patent Text Reader

Abstract

The utility model provides a waterway board and water purification waterway system, the waterway board comprises a waterway board body and a waste water ratio adjustable valve, the inside of the waterway board body is provided with a waste water channel, the waterway board body is provided with a valve seat, the valve seat is provided with a first circulation hole and a second circulation hole, the first circulation hole and the second circulation hole are both located on the waste water channel, and the valve seat is provided with a water inlet. The first circulation hole is located in the middle of the valve seat, the waste water ratio adjustable valve comprises a valve element and a driving mechanism, the valve element is provided with an abutting plane, the abutting plane abuts against the valve seat, the valve element can rotate around a rotating shaft of the valve element, the abutting plane is provided with a butt-joint opening corresponding to the first circulation hole, and the butt-joint opening is located on the rotating shaft of the valve element and communicates with the first circulation hole; the abutting plane is further provided with a plurality of switching ports, each switching port is communicated with the butt joint port through an internal channel of the valve element, the switching ports are arranged around a rotating shaft of the valve element, and the distance between each switching port and the butt joint port is equal to the distance between the first circulation hole and the second circulation hole.
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Description

Technical Field

[0001] This utility model relates to a water circuit board and a water purification system. Background Technology

[0002] As water purification equipment becomes increasingly common in homes, devices that only purify water are no longer sufficient to meet the needs of some users. Users want purified water that is safe and retains its minerals. Different groups have different requirements for the mineral content of water. For example, young children and the elderly need to supplement their bodies with more minerals, so they require water containing more minerals. Meanwhile, some young people, who are generally healthy and have high standards for the taste of water, prefer water with as few ions as possible to ensure a good taste. Traditional water purification equipment has a wastewater ratio solenoid valve in the wastewater passage, with a fixed orifice size that cannot be adjusted. This results in a relatively stable TDS (Total Dissolved Solids) level in the purified water, with minimal deviation, making it difficult to meet diverse needs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a water circuit board and a water purification system.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A water circuit board includes a water circuit board body and a wastewater ratio adjustable valve. The water circuit board body has a wastewater passage inside and a valve seat on the water circuit board body. The valve seat is provided with a first flow hole and a second flow hole, both of which are located on the wastewater passage. The first flow hole is located in the middle of the valve seat. The wastewater passage is connected through the internal passage of the wastewater ratio adjustable valve. The wastewater ratio adjustable valve includes a valve core and a driving mechanism. The valve core has an abutting surface that abuts against the valve seat. The valve core is rotatable about its own rotation axis. The abutting plane has a corresponding interface to the first flow hole. The interface is located on the rotation axis of the valve core and communicates with the first flow hole. The abutting plane also has multiple switching ports. Each switching port communicates with the interface through the internal passage of the valve core. The multiple switching ports are arranged around the rotation axis of the valve core. The distance between each switching port and the interface is equal to the distance between the first flow hole and the second flow hole. The apertures of the multiple switching ports are all different. The driving mechanism is connected to the valve core and is used to drive the valve core to rotate.

[0006] In this solution, the water circuit board is equipped with a wastewater ratio adjustable valve on the internal wastewater passage. The wastewater ratio adjustable valve is used to adjust the flow rate of the wastewater passage. Since both the first and second flow holes are located on the wastewater passage, the first flow hole on the valve seat is connected to one end of the wastewater passage, and the second flow hole on the valve seat is connected to the other end of the wastewater passage. At the same time, since the valve core's interface is located on the valve core's rotation axis, the interface is always connected to the first flow hole no matter how the valve core rotates. In addition, the distance between each switching port and the interface is equal to the distance between the first and second flow holes. Therefore, the valve core can be driven to rotate around its own rotation axis by the drive mechanism, which can switch the switching ports of different diameters to connect with the second flow hole. In the process of switching between multiple second flow holes of different diameters, the wastewater flow rate is adjusted, which allows users to adjust the amount of wastewater as needed, thereby obtaining purified water with different mineral contents.

[0007] The first flow hole is located in the middle of the valve seat, so that when the valve core rotates around its own rotation axis, all interfaces can be connected to the first flow hole. The second flow hole and different switching ports can be switched and connected by rotating the valve core.

[0008] For example, in areas with good water quality, the flow rate of the wastewater passage can be reduced by adjusting the wastewater ratio adjustable valve, thereby reducing wastewater levels. Conversely, in areas with relatively high ion content in the water, the flow rate of the wastewater passage can be increased by adjusting the wastewater ratio adjustable valve, thereby improving the membrane's retention rate and reducing the ion content in the purified water.

[0009] Preferably, the water circuit board body has a recessed portion, and the valve seat is disposed at the bottom of the recessed portion.

[0010] In this design, the valve seat is positioned at the bottom of the recess, which facilitates the installation and fixing of the valve core and also facilitates the sealing connection between the valve core and the valve seat.

[0011] Preferably, the wastewater ratio adjustable valve further includes a sealing assembly, which is disposed between the valve core and the valve seat, and is used to seal the gap between the valve core and the valve seat.

[0012] In this solution, a sealing component is installed between the valve core and the valve seat to improve the sealing effect between them and prevent water leakage.

[0013] Preferably, the sealing assembly includes a first sealing ring, which is sleeved on the outer peripheral side of the valve core, and the outer peripheral side of the first sealing ring abuts against the inner wall of the recess.

[0014] In this design, the first sealing ring is fitted around the outer periphery of the valve core. The first sealing ring is used to seal the gap between the valve core and the inner wall of the recess, preventing water leakage from the gap between the outer periphery of the valve core and the inner wall of the recess, thereby improving the sealing effect.

[0015] Preferably, the sealing assembly further includes a second sealing ring, which is sleeved around the interface and the switching port, and is embedded in the valve core or the valve seat.

[0016] In this solution, a second sealing ring is fitted around the interface. The second sealing ring is pressed against the valve seat by the valve core to prevent water from leaking out of the interface and improve the sealing effect.

[0017] A second sealing ring is fitted around the switching port. The second sealing ring is pressed against the valve seat by the valve core to prevent water from leaking out of the switching port and improve the sealing effect.

[0018] Preferably, the wastewater ratio adjustable valve further includes a pressure cap, which is installed on the water circuit board body by fasteners. The pressure cap is sleeved on the valve core and embedded in the recessed portion, with the lower edge of the pressure cap abutting against the upper edge of the valve core.

[0019] In this solution, the gland is installed on the water circuit board body by fasteners. The gland limits and fixes the valve core to the valve seat. The space between the lower edge of the gland and the valve seat constitutes the receiving space of the valve core. The valve core rotates in this space, which improves the reliability of the valve core rotation.

[0020] Preferably, the valve core has a through hole along a direction perpendicular to the rotation axis of the valve core, and both the docking port and the switching port are connected to the through hole. The wastewater ratio adjustable valve also includes plugs, and the two plugs are used to block the openings at both ends of the through hole, and the through hole and the plugs form the internal passage.

[0021] In this solution, by setting a through hole on the valve core along the direction perpendicular to the rotation axis of the valve core, and setting plugs at both ends of the through hole, it is convenient to process and manufacture the internal passage on the valve core, and also convenient to clean the internal passage after removing the plugs.

[0022] Preferably, the water circuit board body also has a filter element interface for installing the filter element and a drain outlet, and the two ends of the wastewater passage are respectively connected to the wastewater outlet of the filter element and the drain outlet.

[0023] In this solution, the filter element is installed on the water circuit board body through the filter element interface. The wastewater outlet of the filter element is connected to the drain outlet through the wastewater passage set in the water circuit board body, eliminating the pipe between the drain outlet and the wastewater outlet. This allows the wastewater generated by the filter element to be discharged out through the drain outlet, resulting in high system integration and simplified structural setup.

[0024] Preferably, the water circuit board body has a water inlet and a purified water inlet, and the interior of the water circuit board body also has a raw water passage and a purified water passage. The two ends of the raw water passage are respectively connected to the water inlet and the raw water inlet of the filter element, and the two ends of the purified water passage are respectively connected to the water inlet and the purified water outlet of the filter element.

[0025] In this design, the raw water inlet of the filter element is connected to the water inlet through a raw water passage within the water circuit board body, eliminating the need for a separate pipe between the water inlet and the raw water inlet; the purified water outlet of the filter element is connected to the purified water outlet through a purified water passage within the water circuit board body, eliminating the need for a separate pipe between the purified water outlet and the purified water outlet; and the wastewater outlet of the filter element is connected to the drain outlet through a wastewater passage within the water circuit board body, eliminating the need for a separate pipe between the drain outlet and the wastewater outlet. This design results in high system integration and a simplified structural configuration.

[0026] The filter element is installed on the water circuit board body through the filter element interface. Tap water is connected to the water inlet on the water circuit board body. Raw water is injected into the filter element through the raw water passage inside the water circuit board body. After filtration, the wastewater flows to the drain outlet through the wastewater passage. The purified water produced by the filter element flows to the purified water outlet through the purified water passage inside the water circuit board body. Users can obtain the purified water they need at the purified water outlet.

[0027] A water purification system, the water purification system comprising the water circuit board as described above.

[0028] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0029] The positive and progressive effects of this utility model are as follows: The water circuit board is equipped with a wastewater ratio adjustable valve on the internal wastewater passage. The wastewater ratio adjustable valve is used to adjust the flow rate of the wastewater passage. Since both the first flow hole and the second flow hole are located on the wastewater passage, the first flow hole on the valve seat is connected to one end of the wastewater passage, and the second flow hole on the valve seat is connected to the other end of the wastewater passage. At the same time, since the valve core's interface is located on the valve core's rotation axis, the interface is always connected to the first flow hole no matter how the valve core rotates. In addition, the distance between each switching port and the interface is equal to the distance between the first flow hole and the second flow hole. Therefore, the valve core can be driven to rotate around its own rotation axis by the drive mechanism, and the switching ports of different diameters can be switched to connect with the second flow hole. In the process of switching multiple second flow holes of different diameters, the wastewater flow rate can be adjusted, which makes it convenient for users to adjust the amount of wastewater as needed, thereby obtaining purified water with different mineral contents. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a water circuit board according to a preferred embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the water circuit board with a hidden wastewater ratio adjustable valve, which is a preferred embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the structure of a wastewater ratio adjustable valve according to a preferred embodiment of the present invention. Figure 1 .

[0033] Figure 4 This is a schematic diagram of the structure of a wastewater ratio adjustable valve according to a preferred embodiment of the present invention. Figure 2 .

[0034] Figure 5 This is a schematic diagram of the structure of a wastewater ratio adjustable valve according to a preferred embodiment of the present invention. Figure 3 .

[0035] Figure 6 for Figure 5 Cross-sectional view along line AA.

[0036] Figure 7 This is a cross-sectional structural diagram of the water circuit board according to a preferred embodiment of the present invention.

[0037] Figure 8 for Figure 7 Enlarged view of section B.

[0038] Explanation of reference numerals in the attached figures:

[0039] Waterway board body 1

[0040] Valve seat 11

[0041] First flow hole 111

[0042] Second flow hole 112

[0043] Recess 12

[0044] Filter interface 13

[0045] Drainage outlet 14

[0046] Inlet 15

[0047] Purification water outlet 16

[0048] Wastewater ratio adjustable valve 2

[0049] Valve core 21

[0050] Abutting plane 211

[0051] Interface 2111

[0052] Switching port 2112

[0053] Through hole 2113

[0054] Drive mechanism 22

[0055] Sealing component 23

[0056] First sealing ring 231

[0057] Second sealing ring 232

[0058] Cap 24

[0059] 25 plugs Detailed Implementation

[0060] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0061] like Figures 1-8 As shown, this embodiment discloses a water circuit board, which includes a water circuit board body 1 and a wastewater ratio adjustable valve 2. The water circuit board body 1 has a wastewater passage inside, and the wastewater ratio adjustable valve 2 is used to adjust the flow rate of the wastewater passage. The water circuit board body 1 has a valve seat 11, and the valve seat 11 is provided with a first flow hole 111 and a second flow hole 112. The first flow hole 111 and the second flow hole 112 are both located on the wastewater passage. The first flow hole 111 is located in the middle of the valve seat 11. The wastewater passage is connected through the internal passage of the wastewater ratio adjustable valve 2. The wastewater ratio adjustable valve 2 includes a valve core 21 and a drive mechanism 22. The valve core 21 has an abutment plane 211, which abuts against the valve seat 11. The valve core 21 can rotate around its own rotation axis. The abutment plane 211 has a mating interface 21 corresponding to the first flow hole 111. 11. The interface 2111 is located on the rotation axis of the valve core 21 and communicates with the first flow hole 111. The contact plane 211 also has multiple switching ports 2112. Each switching port 2112 communicates with the interface 2111 through the internal passage of the valve core 21. The multiple switching ports 2112 are arranged around the rotation axis of the valve core 21. The distance between each switching port 2112 and the interface 2111 is equal to the distance between the first flow hole 111 and the second flow hole 112. The apertures of the multiple switching ports 2112 are all different. The drive mechanism 22 is connected to the valve core 21 and is used to drive the valve core 21 to rotate.

[0062] like Figures 1-8As shown, in this embodiment, the water circuit board has a wastewater ratio adjustable valve 2 installed on the internal wastewater passage. Since both the first flow hole 111 and the second flow hole 112 are located on the wastewater passage, the first flow hole 111 on the valve seat 11 is connected to one end of the wastewater passage, and the second flow hole 112 on the valve seat 11 is connected to the other end of the wastewater passage. At the same time, since the coupling interface 2111 of the valve core 21 is located on the rotation axis of the valve core 21, no matter how the valve core 21 rotates, the coupling interface 2111 is always connected to the first flow hole 111. Furthermore, since the distance between each switching port 2112 and the corresponding port 2111 is equal to the distance between the first flow hole 111 and the second flow hole 112, the valve core 21 can be driven to rotate around its own rotation axis by the drive mechanism 22. This allows the switching ports 2112 of different diameters to be switched to communicate with the second flow hole 112. During the switching process of multiple second flow holes 112 of different diameters, the wastewater flow rate can be adjusted, making it convenient for users to adjust the wastewater volume as needed, thereby obtaining purified water with different mineral contents.

[0063] like Figure 2 and Figure 7 As shown, the first flow hole 111 is located in the middle of the valve seat 11, so that when the valve core 21 rotates around its own rotation axis, all interfaces 2111 can communicate with the first flow hole 111. The second flow hole 112 and different switching ports 2112 can be switched and connected by rotating the valve core 21. For example, in areas with good water quality, the flow rate of the wastewater passage can be reduced by adjusting the wastewater ratio adjustable valve 2, thereby reducing wastewater. For example, in areas with relatively high ion content in the water, the flow rate of the wastewater passage can be increased by adjusting the wastewater ratio adjustable valve 2, thereby improving the membrane retention rate and reducing the ion content in the purified water.

[0064] like Figure 2 and Figure 7 As shown, in this embodiment, the water circuit board body 1 has a recessed portion 12, and the valve seat 11 is disposed at the bottom of the recessed portion 12. Disposing the valve seat 11 at the bottom of the recessed portion 12 facilitates the installation and fixing of the valve core 21, and also facilitates the sealing connection between the valve core 21 and the valve seat 11.

[0065] In this embodiment, the drive mechanism 22 can be a motor or a knob. The motor can be electrically connected to the controller, which controls the rotation of the motor, facilitating automatic control and adjusting the size of the wastewater passage.

[0066] In another alternative embodiment, the drive mechanism includes a knob mounted on the end of the valve core, which can be manually rotated to adjust the size of the wastewater passage, making operation simple and convenient.

[0067] like Figures 6-8As shown, the wastewater ratio adjustable valve 2 also includes a sealing assembly 23. The sealing assembly 23 is provided between the valve core 21 and the valve seat 11, and is used to seal the gap between the valve core 21 and the valve seat 11. By providing the sealing assembly 23 between the valve core 21 and the valve seat 11, the sealing effect between the valve core 21 and the valve seat 11 is improved, and water leakage between the valve core 21 and the valve seat 11 is prevented.

[0068] like Figures 2-8 As shown, the sealing assembly 23 includes a first sealing ring 231, which is sleeved on the outer periphery of the valve core 21 and abuts against the inner wall of the recess 12. The first sealing ring 231 seals the gap between the valve core 21 and the inner wall of the recess 12, preventing water leakage and improving the sealing effect.

[0069] like Figures 2-8 As shown, the sealing assembly 23 also includes a second sealing ring 232. The second sealing ring 232 is respectively fitted around the interface 2111 and the switching port 2112, and is embedded in the valve core 21 or the valve seat 11. When the second sealing ring 232 is fitted around the interface 2111, it is pressed against the valve seat 11 by the valve core 21, preventing water from leaking out of the interface 2111 and improving the sealing effect. Similarly, when the second sealing ring 232 is fitted around the switching port 2112, it is pressed against the valve seat 11 by the valve core 21, preventing water from leaking out of the switching port 2112 and improving the sealing effect.

[0070] like Figures 1-8 As shown, the wastewater ratio adjustable valve 2 also includes a pressure cap 24. The pressure cap 24 is installed on the water circuit board body 1 by fasteners. The pressure cap 24 is sleeved on the valve core 21 and embedded in the recess 12. The lower edge of the pressure cap 24 abuts against the upper edge of the valve core 21. The pressure cap 24 is installed on the water circuit board body 1 by fasteners. The pressure cap 24 limits and fixes the valve core 21 to the valve seat 11. The space between the lower edge of the pressure cap 24 and the valve seat 11 constitutes the receiving space of the valve core 21. The valve core 21 rotates within this space, improving the reliability of the rotation of the valve core 21.

[0071] like Figures 6-8As shown, the valve core 21 has a through hole 2113 along a direction perpendicular to the rotation axis of the valve core 21. Both the interface 2111 and the switching port 2112 are connected to the through hole 2113. The wastewater ratio adjustable valve 2 also includes plugs 25. The two plugs 25 are used to seal the openings at both ends of the through hole 2113, and the through hole 2113 and the plugs 25 form an internal passage. By providing a through hole 2113 along a direction perpendicular to the rotation axis of the valve core 21 and providing plugs 25 at both ends of the through hole 2113, it is convenient to process and manufacture the internal passage on the valve core 21, and it is also convenient to clean the internal passage after removing the plugs 25.

[0072] like Figure 1 and Figure 2 As shown, the water circuit board body 1 also has a filter element interface 13 for installing the filter element and a drain outlet 14. The two ends of the wastewater passage are connected to the wastewater outlet of the filter element and the drain outlet 14, respectively. The filter element is installed on the water circuit board body 1 through the filter element interface 13. The wastewater outlet of the filter element is connected to the drain outlet 14 through the wastewater passage set in the water circuit board body 1, eliminating the need for a pipe between the drain outlet 14 and the wastewater outlet. This allows the wastewater generated by the filter element to be discharged out through the drain outlet 14, resulting in high system integration and simplified structural design.

[0073] like Figure 1 and Figure 2 As shown, the water circuit board body 1 has a water inlet 15 and a purified water inlet 16. The interior of the water circuit board body 1 also has a raw water passage and a purified water passage, omitting the pipe between the water inlet 15 and the raw water inlet. The two ends of the raw water passage are connected to the water inlet 15 and the raw water inlet of the filter element, respectively, omitting the pipe between the purified water inlet 16 and the purified water outlet. The two ends of the purified water passage are connected to the water inlet 15 and the purified water outlet of the filter element, respectively, omitting the pipe between the drain outlet 14 and the wastewater outlet, resulting in high system integration and simplified structural design.

[0074] The filter element is installed on the water circuit board body 1 through the filter element interface 13. Tap water is connected to the water inlet 15 on the water circuit board body 1. Raw water is injected into the filter element through the raw water passage inside the water circuit board body 1. After filtration, the wastewater flows to the drain outlet 14 through the wastewater passage and is discharged. The purified water produced by the filter element flows to the purified water outlet 16 through the purified water passage inside the water circuit board body 1. The user obtains the purified water they need at the purified water outlet 16.

[0075] This embodiment also discloses a water purification system, which includes the water circuit board as described above.

[0076] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0077] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water circuit board, comprising a water circuit board body and a wastewater ratio adjustable valve, wherein the water circuit board body has a wastewater passage inside, characterized in that, The water circuit board body has a valve seat, on which a first flow hole and a second flow hole are provided. Both the first and second flow holes are located on the wastewater passage. The first flow hole is located in the middle of the valve seat. The wastewater passage is connected through the internal passage of the wastewater ratio adjustable valve. The wastewater ratio adjustable valve includes a valve core and a drive mechanism. The valve core has an abutment plane that abuts against the valve seat. The valve core can rotate around its own rotation axis. The abutment plane has a corresponding interface provided with the first flow hole. The interface is located on the rotation axis of the valve core and is connected to the first flow hole. The abutment plane also has multiple switching ports. Each switching port is connected to the interface through the internal passage of the valve core. The multiple switching ports are arranged around the rotation axis of the valve core. The distance between each switching port and the interface is equal to the distance between the first and second flow holes. The diameters of the multiple switching ports are all different. The drive mechanism is connected to the valve core and is used to drive the valve core to rotate.

2. The water channel plate as described in claim 1, characterized in that, The water circuit board body has a recessed portion, and the valve seat is located at the bottom of the recessed portion.

3. The water channel plate as described in claim 2, characterized in that, The wastewater ratio adjustable valve also includes a sealing assembly, which is provided between the valve core and the valve seat to seal the gap between the valve core and the valve seat.

4. The water channel plate as described in claim 3, characterized in that, The sealing assembly includes a first sealing ring, which is sleeved on the outer peripheral side of the valve core, and the outer peripheral side of the first sealing ring abuts against the inner wall of the recess.

5. The water channel plate as described in claim 3, characterized in that, The sealing assembly further includes a second sealing ring, which is fitted around the interface and the switching port respectively, and is embedded in the valve core or the valve seat.

6. The water channel plate as described in claim 2, characterized in that, The wastewater ratio adjustable valve also includes a pressure cap, which is installed on the water circuit board body by fasteners. The pressure cap is sleeved on the valve core and embedded in the recessed part, and the lower edge of the pressure cap abuts against the upper edge of the valve core.

7. The water channel plate as described in claim 1, characterized in that, The valve core has a through hole along a direction perpendicular to the rotation axis of the valve core. The docking port and the switching port are both connected to the through hole. The wastewater ratio adjustable valve also includes plugs. The two plugs are used to block the openings at both ends of the through hole. The through hole and the plugs form the internal passage.

8. The water channel plate as described in claim 1, characterized in that, The water circuit board body also has a filter element interface for installing filter elements and a drain outlet, and the two ends of the wastewater passage are respectively connected to the wastewater outlet of the filter element and the drain outlet.

9. The water channel plate as described in claim 8, characterized in that, The water circuit board body has a water inlet and a purified water inlet. The interior of the water circuit board body also has a raw water passage and a purified water passage. The two ends of the raw water passage are respectively connected to the water inlet and the raw water inlet of the filter element. The two ends of the purified water passage are respectively connected to the water inlet and the purified water outlet of the filter element.

10. A water purification system, characterized in that, The water purification system includes a water circuit board as described in any one of claims 1-9.