A water circuit board with a built-in one-way valve and a water purifier

Abstract

This application relates to the field of water purification equipment. It discloses a water circuit board with a built-in one-way valve and a water purifier. The water circuit board includes a board body and a one-way valve assembly. The board body has a pipeline. The one-way valve assembly includes a valve seat, a valve core, a spring, and an inner sealing ring. The valve seat is located inside the pipeline and includes a flow chamber. The valve core is located inside the valve seat and includes a valve stem and a valve head connected to each other. The valve stem is inserted into the flow chamber. The outer wall of the valve head is fitted with an inner sealing ring. One end of the spring abuts against the valve seat, and the other end abuts against the valve head, pressing the inner sealing ring tightly against the valve seat. The spring force keeps the inner sealing ring pressed against the valve seat, preventing the valve head from loosening and falling off during assembly. No additional fixing parts are needed, resulting in a simple structure, reduced number of parts, and easier assembly. This allows for convenient assembly inside the water circuit board, saving internal space in the water purifier.

Description

Technical Field

[0001] This application relates to the field of water purification equipment, and in particular to a water circuit board with a built-in one-way valve and a water purifier. Background Technology

[0002] Current kitchen water purifiers achieve graded filtration of tap water by connecting directly to the faucet, outputting either low-impurity purified water or high-impurity concentrated water as needed. The purifier integrates core components such as filter cartridges, a pump body, and a control board. The filter cartridges are typically connected to a water circuit board assembly, which facilitates water flow between the cartridges. To prevent backflow, a check valve is often externally connected to the pipes, extending from the water circuit board assembly and connecting to the check valve. However, this independently installed check valve requires additional internal space, hindering the miniaturization of the entire purifier design. Furthermore, the check valve's connection to the water circuit via a pipe body, with its multi-interface structure, results in poor sealing at the joints, posing a risk of leakage under long-term water pressure fluctuations, thus reducing the product's lifespan. Existing methods that integrate the check valve within the water circuit board rely on various fixing components for positioning and fixation. Without these components, the valve head is prone to loosening and falling off during assembly, affecting assembly efficiency. Utility Model Content

[0003] This application aims to improve at least one technical problem in the prior art. Therefore, one objective of this application is to prevent the valve head from loosening and falling off, and to simplify the assembly process.

[0004] The first aspect of this application provides a water circuit board with a built-in one-way valve, which includes a plate body and a one-way valve assembly; the plate body is provided with a pipeline; the one-way valve assembly includes a valve seat, a valve core, a spring, and an inner sealing ring, the valve seat is disposed in the pipeline, the valve seat has a flow cavity, the valve core is located inside the valve seat, the valve core includes a valve stem and a valve head connected to each other, the valve stem is inserted into the flow cavity, the outer wall of the valve head is fitted with the inner sealing ring, one end of the spring abuts against the valve seat, and the other end abuts against the valve head, pressing the inner sealing ring tightly against the valve seat.

[0005] According to some technical solutions of this application, the inner wall of the valve seat is provided with an inclined surface, and the outer edge of the valve head is provided with a corresponding sealing inclined surface, and the sealing inclined surface cooperates with the inclined surface.

[0006] According to some technical solutions of this application, it also includes an outer sealing ring, wherein the end of the valve seat is provided with an annular groove, and the outer sealing ring is sleeved on the annular groove.

[0007] According to some technical solutions of this application, a limiting groove is formed on the side of the valve head facing the valve column, and one end of the spring is inserted into the limiting groove.

[0008] According to some technical solutions of this application, the valve seat is provided with a boss, and the spring is wound around the boss.

[0009] According to some technical solutions of this application, the boss is provided with a through hole, and one end of the valve column is engaged with the through hole and extends into the through hole.

[0010] According to some technical solutions of this application, the bottom of the valve seat is provided with a plurality of reinforcing ribs, the reinforcing ribs are spaced apart along the circumference of the valve seat, one end of the reinforcing rib is connected to the top of the valve seat, and the other end of the reinforcing rib is connected to the boss.

[0011] According to some technical solutions of this application, the plate body is provided with a pure water outlet pipe extending vertically, a first heat dissipation connecting pipe and a second heat dissipation connecting pipe extending longitudinally, the first heat dissipation connecting pipe and the second heat dissipation connecting pipe being connected and communicating with the pure water outlet pipe respectively, and the first heat dissipation connecting pipe being located above the second heat dissipation connecting pipe, and the one-way valve assembly being located inside the pipe opening of the pure water outlet pipe and between the first heat dissipation connecting pipe and the second heat dissipation connecting pipe.

[0012] According to some technical solutions of this application, the plate is provided with a pure water return pipe, and the one-way valve assembly is located inside the pipe opening of the pure water return pipe.

[0013] A second aspect of this application provides a water purifier that includes a water circuit board with a built-in one-way valve as described above.

[0014] The water circuit board with a built-in one-way valve provided in this application has at least the following beneficial effects: an inner sealing ring is fitted on the outer wall of the valve head, one end of the spring abuts against the valve seat, and the other end abuts against the valve head. The inner sealing ring is pressed tightly against the valve seat by the spring force, which prevents the valve head from loosening and falling off during assembly. No additional fixing parts are required, the structure is simple, the number of parts is reduced, and the assembly process is more convenient, so that it can be easily assembled inside the water circuit board to save internal space of the water purifier. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the water channel plate provided in the embodiments of this application;

[0016] Figure 2 for Figure 1 Sectional view along the middle AA direction;

[0017] Figure 3 A three-dimensional structural diagram of the one-way valve provided in the embodiments of this application;

[0018] Figure 4 This is a schematic diagram of the one-way valve provided in an embodiment of this application from another angle;

[0019] Figure 5 This is a cross-sectional structural diagram of the one-way valve provided in an embodiment of this application.

[0020] In the attached diagram: 100 - plate; 200 - one-way valve assembly; 300 - outer sealing ring; 210 - valve seat; 211 - flow cavity; 212 - inclined surface; 220 - valve core; 230 - spring; 240 - inner sealing ring; 260 - valve column; 250 - valve head; 251 - sealing inclined surface; 252 - limiting groove; 270 - boss; 271 - through hole; 280 - reinforcing rib. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Regarding directional descriptions, such as "up," "down," "front," "back," "left," and "right," the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. In the description of this utility model, unless otherwise expressly limited, terms such as "set," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] The following is combined with Figures 1 to 5 The embodiments of this utility model are described below.

[0024] Based on the above, this application provides a water circuit board with a built-in check valve, which includes a board body 100 and a check valve assembly 200.

[0025] Specifically, the plate 100 is provided with a pipeline; the one-way valve assembly 200 includes a valve seat 210, a valve core 220, a spring 230, and an inner sealing ring 240. The valve seat 210 is located in the pipeline and includes a flow chamber 211. The valve core 220 is located inside the valve seat 210 and includes a valve column 260 and a valve head 250 connected to each other. The valve column 260 is inserted into the flow chamber 211. The outer wall of the valve head 250 is fitted with an inner sealing ring 240. One end of the spring 230 abuts against the valve seat 210 and the other end abuts against the valve head 250, pressing the inner sealing ring 240 tightly against the valve seat 210.

[0026] When liquid flows in from the permissible flow direction, pressure acts on the valve core 220. When the pressure is greater than the preload of the spring 230, the valve core 220 moves downward to compress the spring 230, the valve head 250 and the valve seat 210 separate, and the flow chamber 211 is opened, allowing liquid to pass through. When the liquid flows in the opposite direction, the force of the spring 230 and the reverse liquid pressure work together to press the valve head 250 and the inner sealing ring 240 tightly onto the valve seat 210, closing the passage and preventing liquid backflow, thus achieving a one-way flow function. When the liquid flows in the opposite direction, the force of the spring 230 and the liquid pressure are in the same direction, enhancing the sealing effect.

[0027] Therefore, by using the spring force of the spring 230 to press the inner sealing ring 240 tightly onto the valve seat 210, the valve head 250 can be effectively prevented from shifting when the one-way valve is assembled into the water circuit board. No additional fixing parts are required, the structure is simple, the number of parts is reduced, and the assembly process is made easier, so that it can be easily assembled into the water circuit board to save internal space of the water purifier.

[0028] Because the valve core 220 is prone to displacement under water pressure, leading to liquid leakage, in some embodiments, the inner wall of the valve seat 210 is provided with an inclined surface 212, and the outer edge of the valve head 250 is correspondingly provided with a sealing inclined surface 251, which cooperates with the inclined surface 212. During forward flow, the valve core 220 is lifted, and the sealing inclined surface 251 separates from the inclined surface 212; during reverse flow, the valve core 220 returns to its original position and presses against the valve seat 210, with the inclined surfaces tightly fitting together, increasing the contact area at the sealing connection and forming an upward-pressing conical seal to prevent liquid backflow. The greater the reverse liquid pressure, the tighter the fit, further improving the sealing performance of the one-way valve and extending the service life of the water circuit board.

[0029] In some embodiments, the one-way valve assembly 200 further includes an outer sealing ring 300, and the valve seat 210 has an annular groove at its end, with the outer sealing ring 300 fitted onto the annular groove. The valve seat 210 fixes the outer sealing ring 300 through the annular groove. When the one-way valve assembly 200 is installed in the pipeline of the water circuit board, the outer sealing ring 300 is squeezed between the valve seat 210 and the inner wall of the pipeline, preventing liquid from leaking from the mating gap between the two and reducing the risk of water leakage caused by pipeline deformation.

[0030] In some embodiments, a limiting groove 252 is formed on the side of the valve head 250 facing the valve stem 260, and one end of the spring 230 is inserted into the limiting groove 252. The insertion of one end of the spring 230 into the limiting groove 252 of the valve head 250 prevents the spring 230 from shifting or tilting during assembly, ensuring that the elastic force is evenly transmitted along the axial direction of the valve core 220 onto the valve head 250, and preventing the spring 230 from getting stuck or unevenly stressed, thus affecting the sealing effect. Furthermore, a boss 270 is provided inside the valve seat 210, and the spring 230 is wound around the boss 270. The boss 270 restricts the lateral displacement of the spring 230, preventing the spring 230 from directly contacting the plane and slipping or shifting, thus ensuring the sealing performance and preventing fatigue deformation of the spring 230, thereby extending its service life.

[0031] In some embodiments, the boss 270 is provided with a through hole 271, one end of the valve stem 260 is engaged with the through hole 271 and extends into the through hole 271. By engaging the valve stem 260 with the through hole 271, the valve core 220 is further guided to move, so as to prevent the valve core 220 from shifting when impacted by water flow, and further extend the life of the one-way valve assembly 200.

[0032] In some embodiments, the bottom of the valve seat 210 is provided with a plurality of reinforcing ribs 280, which are spaced apart along the circumference of the valve seat 210. One end of the reinforcing rib 280 is connected to the top of the valve seat 210, and the other end of the reinforcing rib 280 is connected to the boss 270. By connecting the top of the valve seat 210 and the boss 270 with the reinforcing ribs 280, the overall strength of the valve seat 210 is enhanced, and deformation of the valve seat 210 is prevented under long-term water flow impact.

[0033] Optionally, the plate 100 is provided with a vertically extending pure water outlet pipe, a longitudinally extending first heat dissipation connecting pipe, and a second heat dissipation connecting pipe. The first and second heat dissipation connecting pipes are respectively connected to and communicate with the pure water outlet pipe, and the first heat dissipation connecting pipe is located above the second heat dissipation connecting pipe. A one-way valve assembly 200 is located inside the opening of the pure water outlet pipe and between the first and second heat dissipation connecting pipes. The pure water outlet pipe is arranged vertically. Pure water flows into the heat dissipation pipe along the first heat dissipation connecting pipe, and then flows into the pure water outlet pipe along the second connecting pipe. The one-way valve is located between the two, blocking the backflow path, allowing the liquid to continue flowing out along the pure water outlet pipe, and preventing backflow contamination of the pure water.

[0034] Alternatively, the plate 100 may be provided with a pure water return pipe, and the one-way valve assembly 200 may be located inside the opening of the pure water return pipe to prevent the pure water in the return pipe from flowing back.

[0035] This application also provides a water purifier, which includes a water circuit board with a built-in one-way valve as described above. After the raw water is filtered by the filter element, the pure water is transported to the water-using end through the water circuit board. By building a one-way valve into the water circuit board, functions such as backflow prevention, sealing, and guiding are achieved at nodes such as the main line, heat dissipation pipe, or return pipe, ensuring that the water flows along the designed path. At the same time, by directly building the one-way valve into the water circuit board, external pipe interfaces are reduced, the risk of water leakage is reduced, assembly efficiency is improved, and internal space of the water purifier is saved.

[0036] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, "an embodiment," "an embodiment," and / or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is to be emphasized and understood that two or more references to "an embodiment" or "an embodiment" in various parts of this specification do not necessarily refer to the same embodiment. Moreover, specific features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0037] The preferred embodiments of this application have been described in detail above, but this application is not limited to the embodiments described. Without departing from the spirit and scope of this specification, those skilled in the art can make equivalent modifications or alternative configurations based on the embodiments in this specification to implement the application in this specification. These equivalent modifications or alternatives are all included within the scope defined by the claims of this application.

Claims

1. A water circuit board with a built-in one-way valve, characterized in that: include: A plate (100) is provided with pipes; A one-way valve assembly (200) includes a valve seat (210), a valve core (220), a spring (230), and an inner sealing ring (240). The valve seat (210) is located inside a pipeline and has a flow chamber (211). The valve core (220) is located inside the valve seat (210) and includes a valve column (260) and a valve head (250) connected to each other. The valve column (260) is inserted into the flow chamber (211). The inner sealing ring (240) is fitted on the outer wall of the valve head (250). One end of the spring (230) abuts against the valve seat (210) and the other end abuts against the valve head (250), pressing the inner sealing ring (240) tightly against the valve seat (210). The plate (100) is provided with a pure water outlet pipe extending vertically, a first heat dissipation connecting pipe and a second heat dissipation connecting pipe extending longitudinally. The first heat dissipation connecting pipe and the second heat dissipation connecting pipe are respectively connected to and communicate with the pure water outlet pipe, and the first heat dissipation connecting pipe is located above the second heat dissipation connecting pipe. The valve seat (210) abuts against the inner wall of the pure water outlet pipe and is located between the first heat dissipation connecting pipe and the second heat dissipation connecting pipe.

2. The water circuit board built into the one-way valve according to claim 1, characterized in that: The valve seat (210) has an inclined surface (212) on its inner wall, and the valve head (250) has a corresponding sealing inclined surface (251) on its outer edge, and the sealing inclined surface (251) cooperates with the inclined surface (212).

3. The water circuit board built into the one-way valve according to claim 1, characterized in that: It also includes an outer sealing ring (300), and the end of the valve seat (210) is provided with an annular groove, and the outer sealing ring (300) is sleeved on the annular groove.

4. The water circuit board built into the one-way valve according to claim 1, characterized in that: The valve head (250) has a limiting groove (252) on the side facing the valve column (260), and one end of the spring (230) is inserted into the limiting groove (252).

5. The water circuit board built into the one-way valve according to claim 1, characterized in that: The valve seat (210) has a boss (270) inside, and the spring (230) is wound around the boss (270).

6. The water circuit board built into the one-way valve according to claim 5, characterized in that: The boss (270) is provided with a through hole (271), and one end of the valve column (260) is engaged with the through hole (271) and extends into the through hole (271).

7. The water circuit board built into the one-way valve according to claim 6, characterized in that: The valve seat (210) is provided with a plurality of reinforcing ribs (280) at the bottom. The reinforcing ribs (280) are spaced apart along the circumference of the valve seat (210). One end of the reinforcing rib (280) is connected to the top of the valve seat (210), and the other end of the reinforcing rib (280) is connected to the boss (270).

8. The water circuit board built into the one-way valve according to claim 1, characterized in that: The plate is provided with a pure water return pipe, and the valve seat abuts against the inner wall of the pure water return pipe.

9. A water purifier, characterized in that: It includes a water circuit board with a one-way valve built in as described in any one of claims 1-8.

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