Waterway board and purification waterway system

Abstract

The utility model provides a waterway board and purification waterway system, including waterway board body and waste water ratio adjustable valve, the waterway board body is provided with the valve seat, the valve seat is provided with the first circulation hole and the second circulation hole, the cross section of the first circulation hole is horn-shaped structure, the waste water ratio adjustable valve includes valve core, seal cover and drive mechanism, the valve element comprises a valve rod and a rotating disc connected to one end of the valve rod, the rotating disc abuts against the valve seat, the valve element can rotate along the axis of the valve element, a communicating groove penetrating in the axial direction of the valve element is formed in the rotating disc, one end of the communicating groove is used for being communicated with the first circulating hole, and the second end of the communicating groove is used for being communicated with the second circulating hole. A channel is defined by the sealing cover, the rotating disc and the valve seat, the first circulating hole can communicate with the second circulating hole through the communicating groove and the channel when the valve element rotates to the first angle position, the rotating disc seals the first circulating hole when the valve element rotates to the second angle position, and the driving mechanism is used for driving the valve element to rotate.

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, which is connected to the internal passage of the wastewater ratio adjustable valve. The water circuit board body has a valve seat with a first flow hole and a second flow hole. Both the first and second flow holes are located on the wastewater passage. The cross-section of the first flow hole is horn-shaped, and the inner diameter of the horn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat. The wastewater ratio adjustable valve includes a valve core, a sealing cover, and a driving mechanism. The valve core includes a valve stem and a rotating disk connected to one end of the valve stem. The rotating disk abuts against the valve seat. The valve core is capable of... The rotating disk rotates along its own axis and has a through groove extending along the axial direction of the valve core. One end of the through groove is used to communicate with the first flow hole, and the second end of the through groove is used to communicate with the second flow hole. The sealing cover is connected to the valve seat and covers the rotating disk. The valve stem passes through the through hole of the sealing cover and is connected to the rotating disk. The sealing cover, the rotating disk, and the valve seat form a channel. When the valve core rotates to a first angular position, the first flow hole can communicate with the second flow hole through the through groove and the channel. When the valve core rotates to a second angular position, the rotating disk closes the first flow hole. The driving mechanism is used to drive the valve core to rotate.

[0006] In this design, the water circuit board has an adjustable wastewater ratio valve installed on its internal wastewater passage. Since both the first and second flow holes are located on the wastewater passage, the two ends of the wastewater passage are connected through the internal passage of the adjustable wastewater ratio valve. When the drive mechanism drives the valve core's rotating disk to the first angle position, the connecting groove on the rotating disk aligns with the first flow hole, and the first flow hole connects with the second flow hole through the connecting groove on the rotating disk, the channel between the sealing cover and the valve seat. When the drive mechanism drives the valve core's rotating disk to the second angle position, the connecting groove on the rotating disk misaligns with the first flow hole, and the rotating disk closes the first flow hole. Simultaneously, because the cross-section of the first flow hole is horn-shaped, and the inner diameter of the horn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat, the rotating disk gradually adjusts the flow rate of the first flow hole during rotation, correspondingly changing the flow rate of the wastewater passage. This achieves the adjustment of the wastewater flow rate, allowing users to adjust the wastewater volume as needed, thereby obtaining purified water with different mineral contents.

[0007] 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 volume. 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.

[0008] Preferably, the water circuit board body has a recess, the valve seat is disposed at the bottom of the recess, the sealing cover is embedded in the recess, and the outer peripheral surface of the sealing cover abuts against the inner wall of the recess.

[0009] In this design, the valve seat is positioned at the bottom of the recess, and the inner wall of the recess limits the sealing cover, which facilitates the installation and fixing of the sealing cover and also facilitates the sealing connection between the sealing cover and the valve seat.

[0010] Preferably, the wastewater ratio adjustable valve further includes a sealing element, which is embedded in the through hole of the sealing cover and sleeved on the outside of the valve core.

[0011] In this solution, a first sealing ring is installed between the valve core and the sealing cover to prevent water in the channel from leaking out from the gap between the valve core and the sealing cover, thereby improving the sealing effect between the valve core and the sealing cover.

[0012] Preferably, the wastewater ratio adjustable valve further includes a first sealing ring, which is sleeved around the first flow hole. The upper and lower sides of the first sealing ring abut against the valve seat and the rotating disk, respectively. The first sealing ring is embedded in a groove on the valve seat or a groove on the rotating disk.

[0013] In this design, a first sealing ring is provided between the rotating disk and the valve seat. The first sealing ring is used to seal the gap between the lower surface of the rotating disk and the valve seat, thereby improving the sealing effect. The first sealing ring can be embedded in a groove on the valve seat, or it can be embedded in a groove on the lower surface of the rotating disk, thus improving the fixing effect of the first sealing ring.

[0014] Preferably, the wastewater ratio adjustable valve further includes a second sealing ring, which is sleeved on the outer peripheral surface of the sealing cover, and the outer peripheral surface of the second sealing ring abuts against the inner wall of the recess.

[0015] In this design, the second sealing ring is fitted around the outer periphery of the sealing cover. The second sealing ring is used to seal the gap between the inner wall of the recess and the sealing cover, preventing water leakage from the gap between the outer periphery of the sealing cover and the inner wall of the recess, thereby improving the sealing effect.

[0016] Preferably, the wastewater ratio adjustable valve further includes a third sealing ring, which is disposed between the end face of the sealing cover facing the valve seat and the valve seat, and is embedded in a groove on the valve seat or a groove on the sealing cover.

[0017] In this design, a third sealing ring is installed between the sealing cap and the valve seat. The third sealing ring is pressed against the valve seat by the sealing cap to prevent water from leaking out from the gap between the sealing cap and the valve seat, thereby improving the sealing effect.

[0018] The third sealing ring can be embedded in the groove on the valve seat, or embedded in the groove on the lower surface of the sealing cover to improve the fixing effect of the first sealing ring.

[0019] Preferably, the wastewater ratio adjustable valve further includes a pressure cap, which is sleeved on the valve stem and embedded in the recess. The lower edge of the pressure cap abuts against the upper edge of the sealing cap, and the pressure cap is also installed on the water circuit board body by fasteners.

[0020] In this solution, the gland is installed on the water circuit board body by fasteners. The gland limits and fixes the sealing cover to the valve seat, which facilitates the installation and removal of the sealing cover and also improves the fixing effect of the sealing cover.

[0021] Preferably, the wastewater ratio adjustable valve further includes a fixing member, which is installed on the outside of the sealing cover, the valve stem passes through a through hole on the fixing member, and the drive mechanism is connected to the valve stem.

[0022] In this design, the valve stem passes through the through hole of the fixing component, and the driving mechanism drives the valve stem to rotate within the through hole. The inner wall of the through hole of the fixing component can limit the valve stem and prevent it from swaying. Preferably, a limiting step is also provided at the upper end of the valve stem. The limiting step is engaged with the upper surface of the fixing component, and the limiting step, in cooperation with the fixing component, can limit the valve stem in the vertical direction, improving the fixing effect.

[0023] Preferably, the drive mechanism includes a motor, the output shaft of which is connected to the valve core;

[0024] Alternatively, the drive mechanism may include a knob connected to the valve core.

[0025] In this solution, the motor can be electrically connected to the controller, which controls the rotation of the motor, facilitating automatic control and enabling the adjustment of the size of the wastewater passage.

[0026] In another design, a knob is installed at the end of the valve core, allowing for manual adjustment of the wastewater passage size, making operation simple and convenient.

[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 significant advantages of this invention are as follows: The water circuit board incorporates a wastewater ratio adjustable valve within its internal wastewater passage. Since both the first and second flow holes are located on the wastewater passage, the two ends of the passage are connected via the internal passage of the adjustable valve. When the drive mechanism rotates the valve core's rotating disk to the first angle position, the connecting groove on the rotating disk aligns with the first flow hole, and the first flow hole connects to the second flow hole through the connecting groove on the rotating disk, the channel between the sealing cover and the valve seat. When the drive mechanism rotates the valve core's rotating disk to the second angle position, the connecting groove on the rotating disk misaligns with the first flow hole, and the rotating disk closes the first flow hole. Simultaneously, because the first flow hole has a horn-shaped cross-section, and the inner diameter of the horn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat, the rotating disk gradually adjusts the flow rate of the first flow hole during rotation, correspondingly changing the flow rate of the wastewater passage. This allows for the adjustment of the wastewater flow rate, enabling users to adjust the wastewater volume 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 cross-sectional structural diagram of the water circuit board according to a preferred embodiment of the present invention.

[0032] Figure 3 for Figure 2 Enlarged view of section A.

[0033] Figure 4 This is a schematic diagram of the structure of the water circuit board behind the wastewater ratio adjustable valve in a preferred embodiment of the present invention.

[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 1 .

[0035] Figure 6 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 .

[0036] Figure 7 for Figure 6 Cross-sectional view along line BB.

[0037] Figure 8 This is a schematic diagram of the valve core according to a preferred embodiment of the present invention.

[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] Channel 113

[0044] Depression 114

[0045] Wastewater ratio adjustable valve 2

[0046] Valve core 21

[0047] Valve stem 211

[0048] Rotary disk 212

[0049] Connecting slot 2121

[0050] Sealing cap 22

[0051] Drive mechanism 23

[0052] Seal 24

[0053] First sealing ring 25

[0054] Second sealing ring 26

[0055] Third sealing ring 27

[0056] Cap 28

[0057] Fastener 29 Detailed Implementation

[0058] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0059] like Figures 1-8As 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, which is connected to the internal passage of the wastewater ratio adjustable valve 2. The water circuit board body 1 has a valve seat 11, which 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 cross-section of the first flow hole 111 is a bullhorn-shaped structure, and the inner diameter of the bullhorn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat 11. The wastewater ratio adjustable valve 2 includes a valve core 21, a sealing cover 22, and a driving mechanism 23. The valve core 21 includes a valve stem 211 and a rotating disk 212 connected to one end of the valve stem 211. The rotating disk 212 abuts against the valve seat 11. 1. It can rotate along its own axis. The rotating disk 212 has a through groove 2121 that runs through the axial direction of the valve core 21. One end of the through groove 2121 is used to communicate with the first flow hole 111, and the second end of the through groove 2121 is used to communicate with the second flow hole 112. The sealing cover 22 is connected to the valve seat 11 and covers the rotating disk 212. The valve stem 211 passes through the through hole of the sealing cover 22 and is connected to the rotating disk 212. The sealing cover 22, the rotating disk 212, and the valve seat 11 form a channel 113. When the valve core 21 rotates to the first angle position, the first flow hole 111 can communicate with the second flow hole 112 through the through groove 2121 and the channel 113. When the valve core 21 rotates to the second angle position, the rotating disk 212 closes the first flow hole 111. The driving mechanism 23 is used to drive the valve core 21 to rotate.

[0060] In this embodiment, the rotating disk 212 has a plurality of protrusions on its surface facing the sealing cover 22, and cavities are formed between adjacent protrusions. The protrusions are used to abut against the lower surface of the sealing cover 22, and the channel 113 passes through the cavity to connect the upper end of the connecting groove 2121 with the second flow hole 112.

[0061] 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 two ends of the wastewater passage are connected through the internal passage of the wastewater ratio adjustable valve 2. When the drive mechanism 23 drives the rotating disk 212 of the valve core 21 to rotate to the first angle position, the connecting groove 2121 on the rotating disk 212 is aligned with the first flow hole 111, and the first flow hole 111 is connected to the second flow hole 112 through the connecting groove 2121 on the rotating disk 212, the channel 113 between the sealing cover 22 and the valve seat 11. When the drive mechanism 23 drives the rotating disk 212 of the valve core 21 to rotate to the second angle position, the connecting groove 2121 on the rotating disk 212 is misaligned with the first flow hole 111, and the rotating disk 212 closes the first flow hole 111. Meanwhile, since the cross-section of the first flow hole 111 is horn-shaped, and the inner diameter of the horn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat 11, the rotating disk 212 will gradually adjust the flow rate of the first flow hole 111 during rotation, thereby changing the flow rate of the wastewater passage and realizing the adjustment of the wastewater flow rate. This allows users to adjust the wastewater volume as needed, thereby obtaining purified water with different mineral contents.

[0062] 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 volume. 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 2, thereby improving the membrane's retention rate and reducing the ion content in the purified water.

[0063] like Figure 3 and Figure 4 As shown, the water circuit board body 1 has a recess 114, a valve seat 11 is located at the bottom of the recess 114, and a sealing cover 22 is embedded in the recess 114, with the outer peripheral surface of the sealing cover 22 abutting against the inner wall of the recess 114. By placing the valve seat 11 at the bottom of the recess 114, the inner wall of the recess 114 limits the sealing cover 22, facilitating the installation and fixing of the sealing cover 22, and also facilitating the sealing connection between the sealing cover 22 and the valve seat 11.

[0064] like Figure 2 , Figure 3 and Figure 7 As shown, the wastewater ratio adjustable valve 2 also includes a sealing element 24, which is embedded in the through hole of the sealing cover 22 and sleeved on the outside of the valve core 21. By providing a first sealing ring 25 between the valve core 21 and the sealing cover 22, water in the channel 113 is prevented from leaking out from the gap between the valve core 21 and the sealing cover 22, thereby improving the sealing effect between the valve core 21 and the sealing cover 22.

[0065] like Figure 2 , Figure 3 and Figure 7As shown, the wastewater ratio adjustable valve 2 also includes a first sealing ring 25. The first sealing ring 25 is sleeved around the first flow hole 111, and its upper and lower sides respectively abut against the valve seat 11 and the rotating disk 212. The first sealing ring 25 is embedded in a groove on the valve seat 11 or a groove on the rotating disk 212. The first sealing ring 25 is provided between the rotating disk 212 and the valve seat 11 to seal the gap between the lower surface of the rotating disk 212 and the valve seat 11, improving the sealing effect. In this embodiment, the first sealing ring 25 can be embedded in a groove on the valve seat 11 to improve its fixing effect. In another embodiment, the first sealing ring is embedded in a groove on the lower surface of the rotating disk.

[0066] like Figure 2 , Figure 3 and Figure 7 As shown, the wastewater ratio adjustable valve 2 also includes a second sealing ring 26. The second sealing ring 26 is sleeved on the outer peripheral surface of the sealing cover 22, and the outer peripheral surface of the second sealing ring 26 abuts against the inner wall of the recess 114. The second sealing ring 26 is sleeved on the outer peripheral side of the sealing cover 22 and is used to seal the gap between the inner wall of the recess 114 and the sealing cover 22, preventing water leakage from the gap between the outer peripheral side of the sealing cover 22 and the inner wall of the recess 114, thereby improving the sealing effect.

[0067] like Figure 2 , Figure 3 and Figure 7 As shown, the wastewater ratio adjustable valve 2 also includes a third sealing ring 27. The third sealing ring 27 is disposed between the end face of the sealing cover 22 facing the valve seat 11 and the valve seat 11. The third sealing ring 27 is embedded in a groove on the valve seat 11 or a groove on the sealing cover 22. The third sealing ring 27 is disposed between the sealing cover 22 and the valve seat 11. The third sealing ring 27 is pressed against the valve seat 11 by the sealing cover 22, preventing water from leaking out from the gap between the sealing cover 22 and the valve seat 11, thereby improving the sealing effect.

[0068] like Figure 3 As shown, in this embodiment, the third sealing ring 27 is embedded in a groove on the valve seat 11, improving the fixing effect of the first sealing ring 25. In another embodiment, the third sealing ring can be embedded in a groove on the lower surface of the sealing cover.

[0069] like Figures 1-3 and Figures 5-7 As shown, the wastewater ratio adjustable valve 2 also includes a pressure cap 28, which is sleeved on the valve stem 211 and embedded in the recess 114. The lower edge of the pressure cap 28 abuts against the upper edge of the sealing cover 22. The pressure cap 28 is also installed on the water circuit board body 1 by fasteners. The pressure cap 28 is installed on the water circuit board body 1 by fasteners, and the pressure cap 28 limits and fixes the sealing cover 22 to the valve seat 11, which facilitates the installation and removal of the sealing cover 22 and also improves the fixing effect of the sealing cover 22.

[0070] like Figures 1-3 and Figures 5-7 As shown, the wastewater ratio adjustable valve 2 also includes a fixing member 29, which is installed on the outside of the sealing cover 22. The valve stem 211 passes through a through hole in the fixing member 29, and the drive mechanism 23 is connected to the valve stem 211. The valve stem 211 passes through the through hole of the fixing member 29, and the drive mechanism 23 drives the valve stem 211 to rotate within the through hole. The inner wall of the through hole of the fixing member 29 can limit the valve stem 211 to prevent it from swaying. Preferably, the upper end of the valve stem 211 is also provided with a limiting step, which is engaged with the upper surface of the fixing member 29. The limiting step and the fixing member 29 cooperate to limit the valve stem 211 in the vertical direction, improving the fixing effect. More preferably, the lower edge of the fixing member 29 abuts against the upper edge of the sealing member 24, and the fixing member 29 cooperates with the sealing cover to limit and fix the sealing member 24.

[0071] In this embodiment, the drive mechanism 23 includes a motor, the output shaft of which is connected to the valve core 21. The motor can be electrically connected to a controller, which controls the rotation of the motor for automatic control, thereby adjusting the size of the wastewater passage.

[0072] In another embodiment, the drive mechanism includes a knob connected to the valve core. The knob is mounted at the end of the valve core and can be manually rotated to adjust the size of the wastewater passage, making operation simple and convenient.

[0073] This embodiment also discloses a water purification system, which includes a water circuit board as described above. The water circuit board also has an interface for installing filter cartridges. The interior of the water circuit board has a purified water circuit and a raw water circuit, both extending into the interface. The surface of the water circuit board has an inlet, a wastewater outlet, and a purified water outlet. The inlet is connected to the raw water circuit, the wastewater outlet is connected to the wastewater circuit, and the purified water outlet is connected to the purified water circuit.

[0074] 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.

[0075] 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, characterized in that, It includes a water circuit board body and a wastewater ratio adjustable valve. The water circuit board body has a wastewater passage inside, which is connected to the internal passage of the wastewater ratio adjustable valve. The water circuit board body has a valve seat with a first flow hole and a second flow hole. Both the first and second flow holes are located on the wastewater passage. The cross-section of the first flow hole is horn-shaped, and the inner diameter of the horn-shaped structure gradually increases from one end to the other along the circumferential direction of the valve seat. The wastewater ratio adjustable valve includes a valve core, a sealing cover, and a drive mechanism. The valve core includes a valve stem and a rotating disk connected to one end of the valve stem. The rotating disk abuts against the valve seat, and the valve core can move along its own... The valve core rotates along its axis. The rotating disk has a through groove extending along the axial direction of the valve core. One end of the through groove is used to communicate with the first flow hole, and the second end of the through groove is used to communicate with the second flow hole. The sealing cover is connected to the valve seat and covers the rotating disk. The valve stem passes through the through hole of the sealing cover and is connected to the rotating disk. The sealing cover, the rotating disk, and the valve seat form a channel. When the valve core rotates to a first angular position, the first flow hole can communicate with the second flow hole through the through groove and the channel. When the valve core rotates to a second angular position, the rotating disk closes the first flow hole. The driving mechanism 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, the valve seat is located at the bottom of the recessed portion, the sealing cover is embedded in the recessed portion, and the outer peripheral surface of the sealing cover abuts against the inner wall of the recessed portion.

3. The water channel plate as described in claim 1, characterized in that, The wastewater ratio adjustable valve also includes a sealing element, which is embedded in the through hole of the sealing cover and sleeved on the outside of the valve core.

4. The water channel plate as described in claim 1, characterized in that, The wastewater ratio adjustable valve also includes a first sealing ring, which is sleeved around the first flow hole. The upper and lower sides of the first sealing ring abut against the valve seat and the rotating disk, respectively. The first sealing ring is embedded in the groove on the valve seat or the groove on the rotating disk.

5. The water channel plate as described in claim 2, characterized in that, The wastewater ratio adjustable valve also includes a second sealing ring, which is sleeved on the outer peripheral surface of the sealing cover, and the outer peripheral surface of the second sealing ring abuts against the inner wall of the recess.

6. The water channel plate as described in claim 1, characterized in that, The wastewater ratio adjustable valve also includes a third sealing ring, which is disposed between the end face of the sealing cover facing the valve seat and the valve seat, and is embedded in a groove on the valve seat or a groove on the sealing cover.

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

8. The water channel plate as described in claim 2, characterized in that, The wastewater ratio adjustable valve also includes a fixing component, which is installed on the outside of the sealing cover. The valve stem passes through a through hole on the fixing component, and the drive mechanism is connected to the valve stem.

9. The water channel plate as described in claim 1, characterized in that, The drive mechanism includes a motor, and the output shaft of the motor is connected to the valve core; Alternatively, the drive mechanism may include a knob connected to the valve core.

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

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