Waterway plate and water purification device comprising the same

Abstract

The utility model relates to water purification equipment technical field, concretely provides a water route board and including water purification equipment of this water route board, the water route board is equipped with raw water flow channel, pure water flow channel, waste water flow channel, first flow channel and second flow channel, prefilter element, postfilter element and reverse osmosis filter element are communicated in proper order, and the second side wall of water route board is equipped with first interface, second interface, third interface and fourth interface, first interface communicates with raw water flow channel, second interface communicates with pure water flow channel, and first interface and second interface are used for installing first reflux control valve, third interface communicates with waste water flow channel, fourth interface communicates with first flow channel, and third interface and fourth interface are used for installing second reflux control valve, through setting up reservation interface and installing first reflux control valve and second reflux control valve on the water route board, can realize pure water reflux and waste water reflux, not only solved the problem of first cup water TDS height, can also save water, improved the utilization of water resources.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, specifically providing a water circuit board and a water purification device including the water circuit board. Background Technology

[0002] Currently, reverse osmosis water purifiers, with their excellent water purification effect, are widely used in households and various civilian drinking water scenarios. To address pain points in the water purification process, such as high TDS in the first cup of water, water waste, and easy scaling and clogging of the RO membrane, existing water purifier circuit boards are generally equipped with a return pipeline structure, mainly divided into two types: pure water return pipeline and wastewater return pipeline.

[0003] Among them, water purifiers equipped with pure water return pipelines mainly use pure water return to flush the pure water side of the RO membrane after shutdown, balancing the concentration difference on both sides of the membrane, effectively improving the problem of excessive water quality in the first cup after prolonged shutdown, and ensuring stable output water quality; water purifiers equipped with wastewater return pipelines can return some concentrated water to the front-end water circuit for recycling, improving the water utilization rate of the water purifier, reducing wastewater discharge, and at the same time increasing the flushing force of water flow on the membrane surface, slowing down the deposition and scaling rate of pollutants on the RO membrane surface, and extending the service life of the filter element.

[0004] However, existing water purifier designs have significant shortcomings. Most mainstream products on the market only have a single pure water return pipe or wastewater return pipe, failing to simultaneously achieve the dual functions of water quality optimization and water-saving membrane protection. Their water circuit functionality is limited and their adaptability is poor. Equipment with only pure water return cannot effectively reduce wastewater discharge, resulting in significant water waste. Furthermore, insufficient flushing of the RO membrane's concentrate side during long-term operation still poses a risk of scaling and membrane clogging. Equipment with only wastewater return cannot address the issue of membrane concentration permeation after shutdown and settling. Users will still experience high TDS and substandard water quality in the first cup of water they draw. Both types of structures have limitations in use and fail to meet the core requirements of both water and energy conservation and high-quality water output.

[0005] Meanwhile, the existing water circuit board design of water purifiers with backflow function is unreasonable. To achieve a single backflow function, it often requires multiple independent pipes, flow restrictors, check valves, and adapters, resulting in a messy overall pipe layout and a large number of components. This not only significantly increases the assembly difficulty and manufacturing cost of the water purifier, but also makes subsequent inspection and maintenance extremely inconvenient. Furthermore, it leads to a large overall size of the water circuit board, occupying a large amount of internal installation space in the water purifier, which is detrimental to the trend of miniaturization and lightweight water purifiers. At the same time, the complex pipe structure is prone to turbulent water flow, pipe pressure buildup, and joint leaks, reducing the overall operational stability and service life of the water purifier.

[0006] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0007] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of the single function and complex structural design of the water circuit board of the existing water purification equipment.

[0008] In a first aspect, this utility model provides a water circuit board, wherein a first mounting seat and a second mounting seat are provided on a first side wall of the water circuit board. The first mounting seat is used to install a composite filter element, and the second mounting seat is used to install a reverse osmosis filter element. The composite filter element includes a pre-filter element and a post-filter element that are integrally or separately arranged. The water circuit board is provided with a raw water channel, a pure water channel, a wastewater channel, a first channel, and a second channel. The inlet of the pre-filter element is connected to the raw water channel, and the outlet of the pre-filter element is connected to the inlet of the reverse osmosis filter element through the first channel. The outlet of the reverse osmosis filter element is connected to the inlet of the first channel. The second flow channel is connected to the inlet of the post-filter cartridge, the outlet of the post-filter cartridge is connected to the pure water flow channel, and the wastewater outlet of the reverse osmosis cartridge is connected to the wastewater flow channel. The second side wall of the water circuit board is provided with a first interface, a second interface, a third interface, and a fourth interface. The first interface is connected to the raw water flow channel, the second interface is connected to the pure water flow channel, the first interface and the second interface are used to install a first reflux control valve, the third interface is connected to the wastewater flow channel, and the fourth interface is connected to the first flow channel. The third interface and the fourth interface are used to install a second reflux control valve.

[0009] In the preferred embodiment of the water circuit board described above, a fifth interface and a sixth interface are further provided on the second side wall. The fifth interface is connected to the first flow channel, and the sixth interface is connected to the pure water flow channel. The fifth interface and the sixth interface are used to install a third backflow control valve.

[0010] In the preferred embodiment of the above-mentioned water circuit board, the first flow channel includes a first branch and a second branch. The first branch is connected to the outlet of the pre-filter element, and the second branch is connected to the inlet of the reverse osmosis filter element. The second side wall is also provided with a seventh interface, an eighth interface, and a ninth interface. The seventh interface is connected to the first branch, and the eighth and ninth interfaces are both connected to the second branch. The inlet of the water pump is connected to the seventh interface, and the outlet of the water pump is connected to one of the eighth and ninth interfaces. The other of the eighth and ninth interfaces is closed. The fourth and fifth interfaces are both connected to the first branch.

[0011] In the preferred embodiment of the above-mentioned water circuit board, the raw water flow channel includes a third branch and a fourth branch. The second side wall is provided with an inlet port, a tenth port, and an eleventh port. The inlet port and the tenth port are both connected to the third branch. The eleventh port is connected to the fourth branch. The fourth branch is connected to the inlet of the pre-filter. The tenth port and the eleventh port are used to install an inlet control valve. The first port is connected to the fourth branch.

[0012] In the preferred embodiment of the above-mentioned water circuit board, the pure water flow channel includes a fifth branch, a sixth branch, a seventh branch, an eighth branch, and a ninth branch. The second sidewall is provided with a TDS interface, a first flow interface, a second flow interface, a twelfth interface, a thirteenth interface, a fourteenth interface, a fifteenth interface, a pressure interface, a first pure water outlet, and a second pure water outlet. The fifth branch is connected to the outlet of the post-filter cartridge. The TDS interface and the first flow interface are both connected to the fifth branch. The second interface, the sixth interface, the second flow interface, and the twelfth interface are all connected to the sixth branch. The S-interface is used to install a TDS detection device. The first flow interface and the second flow interface are used to install a flow detection device. The thirteenth interface, the fourteenth interface, and the pressure interface are all connected to the seventh branch. The twelfth interface and the thirteenth interface are used to install a first check valve. The pressure interface is used to install a pressure detection device. The eighth branch and the ninth branch are both connected to the seventh branch. The first pure water outlet is connected to the eighth branch. The fifteenth interface and the second pure water outlet are both connected to the ninth branch. The fourteenth interface and the fifteenth interface are used to install a pure water control valve.

[0013] In the preferred embodiment of the above-mentioned water circuit board, the wastewater flow channel includes a tenth branch, an eleventh branch, and a twelfth branch. The tenth branch is connected to the wastewater outlet of the reverse osmosis filter element. The first sidewall is provided with a sixteenth interface and a seventeenth interface. The third interface and the sixteenth interface are both connected to the tenth branch, and the seventeenth interface is connected to the eleventh branch. The sixteenth interface and the seventeenth interface are used to install a first wastewater control valve. The second sidewall is provided with an eighteenth interface, a nineteenth interface, and a wastewater outlet. The eighteenth interface is connected to the eleventh branch, and the nineteenth interface and the wastewater outlet are both connected to the twelfth branch. The eighteenth interface and the nineteenth interface are used to install a second wastewater control valve.

[0014] In the preferred embodiment of the above-mentioned water circuit board, the water circuit board is further provided with a purified water flow channel, and the second side wall is further provided with a twentieth interface, a twenty-first interface and a purified water outlet. The twentieth interface is connected to the first flow channel, and the twentieth interface and the purified water outlet are both connected to the purified water flow channel. The twentieth interface and the twenty-first interface are used to install a purified water control valve; and / or the water circuit board is further provided with a water storage channel, and the second side wall is further provided with a twenty-second interface and a twenty-third interface. The first side wall is provided with a water storage interface, the twenty-second interface is connected to the purified water flow channel, the twenty-third interface is connected to the water storage channel, and the two ends of the water storage interface are respectively connected to the water storage channel and the water storage tank.

[0015] In the preferred embodiment of the water circuit board described above, a second one-way valve is provided in the purified water flow channel, and the second one-way valve is open along the direction of the 21st interface toward the purified water outlet.

[0016] In the preferred embodiment of the above-mentioned water circuit board, a third one-way valve is provided between the outlet of the reverse osmosis filter element and the second flow channel. The third one-way valve is open in the direction from the outlet of the reverse osmosis filter element toward the inlet of the post-filter element. A support structure is provided in the second flow channel to support the third one-way valve. And / or a fourth one-way valve is provided in the pure water flow channel. The fourth one-way valve is open in the direction from the outlet of the post-filter element toward the second interface.

[0017] In a second aspect, the present invention provides a water purification device, including the aforementioned water circuit board.

[0018] Those skilled in the art will understand that the water circuit board of this utility model, by setting a first interface, a second interface, a third interface and a fourth interface on the second side wall of the water circuit board, and installing a first backflow control valve and a second backflow control valve, can realize pure water backflow and wastewater backflow, thereby increasing the functionality of the water circuit board. It not only solves the problem of high TDS in the first cup of water, but also saves water and improves the utilization rate of water resources. Through reasonable structural design, the number of exposed pipes on the water circuit board is reduced, the volume of the water circuit board is reduced, and the water purifier is made more compact and lightweight.

[0019] Furthermore, by providing a fifth and a sixth interface on the second side wall and installing a third reflux control valve, the water circuit board of this utility model can allow pure water to flow back to the water pump, thereby improving the adaptability of the water circuit board and enhancing its functional versatility.

[0020] Furthermore, the water circuit board of this utility model increases the connection points of the water pump by setting an eighth interface and a ninth interface on the second side wall of the water circuit board, so that the water pump can be installed in a more reasonable position under different working conditions.

[0021] Furthermore, the water circuit board of this utility model can facilitate the installation of the water inlet control valve by setting a reserved interface for the water inlet control valve.

[0022] Furthermore, the water circuit board of this utility model facilitates the installation of a TDS detection device by providing a TDS interface, facilitates the installation of a flow detection device by providing a first flow interface and a second flow interface, facilitates the installation of a pressure detection device by providing a pressure interface, prevents backflow of water in the water-using equipment due to excessive pressure by providing a reserved interface for a first one-way valve, and facilitates user use by providing a reserved interface for a pure water control valve.

[0023] Furthermore, the water circuit board of this utility model, by providing reserved interfaces for the first wastewater control valve and the second wastewater control valve on the water circuit board, facilitates the installation of the first wastewater control valve and the second wastewater control valve, and facilitates the control of wastewater flow and regulation.

[0024] Furthermore, the water circuit board of this utility model can provide domestic water by setting up a clean water flow channel and a reserved interface for a clean water control valve, and can store pure water in a water storage tank by setting up a water storage flow channel.

[0025] Furthermore, the water circuit board of this utility model can prevent purified water backflow by setting a second one-way valve, facilitate the installation of the third one-way valve by setting a third one-way valve and a support structure, and avoid water backflow from the post-filter cartridge by setting a fourth one-way valve, and prevent raw water from flowing back into the pure water channel. Attached Figure Description

[0026] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of the water circuit board of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the water circuit board of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the water circuit board of this utility model. Figure 3 ; Figure 4 This is a partial structural schematic diagram of the water circuit board of this utility model.

[0027] List of reference numerals in the attached diagram: 11. First sidewall; 12. Second sidewall; 13. First mounting base; 14. Second mounting base; 15. Support structure; 131. First connection port; 132. Second connection port; 133. Third connection port; 134. Fourth connection port; 141. Fifth connection port; 142. Sixth connection port; 143. Seventh connection port; 21. Raw water channel; 22. Pure water channel; 23. Wastewater channel; 24. First channel; 25. Second channel; 26. Clean water channel; 27. Storage channel; 241. First Branch Road; 242. Second Branch Road; 211. Third Branch Road; 212. Fourth Branch Road; 221. Fifth Branch Road; 222. Sixth Branch Road; 223. Seventh Branch Road; 224. Eighth Branch Road; 225. Ninth Branch Road; 231. Tenth Branch Road; 232. Eleventh Branch Road; 233. Twelfth Branch Road; 31. First Interface; 32. Second Interface; 33. Third Interface; 34. Fourth Interface; 35. Fifth Interface; 36. Sixth Interface; 37. Seventh Interface; 38. Eighth Interface; 39. Ninth Interface; 310. Tenth Interface; 311. Eleventh Interface; 312. Twelfth Interface; 313. Thirteenth Interface; 314. Fourteenth Interface; 315. Fifteenth Interface; 316. Sixteenth Interface; 317. Seventeenth Interface; 318. ... 18. Interface 319; 19. Interface 320; 20. Interface 321; 21. Interface 322; 22. Interface 323; 23. Interface 324; Inlet water interface; 325. TDS interface; 326. First flow interface; 327. Second flow interface; 328. Pressure interface; 329. First pure water outlet; 330. Second pure water outlet; 331. Wastewater outlet; 332. Clean water outlet; 333. Water storage interface. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] It should be noted that in the description of this utility model, terms such as "inner," "outer," "upper," and "lower," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," "tenth," "eleventh," "twelfth," "thirteenth," "fourteenth," "fifteenth," "sixteenth," "seventeenth," "eighteenth," "nineteenth," "twentieth," "twenty-first," "twenty-second," and "twenty-third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Based on the background art, existing water purifiers suffer from limited functionality and complex structural designs in their water circuit boards. This invention provides a water circuit board and a water purifier including the water circuit board. By setting a first, second, third, and fourth interface on the second side wall of the water circuit board, and installing a first and second backflow control valve, it enables pure water and wastewater backflow, increasing the board's functionality. This not only solves the problem of high TDS in the first cup of water but also saves water and improves water resource utilization. Through a reasonable structural design, the number of exposed pipes on the water circuit board is reduced, decreasing its volume and making the water purifier more compact and lightweight.

[0032] Specifically, this utility model first provides a water purification device, including a composite filter element (not shown in the figure), a reverse osmosis filter element (not shown in the figure), a water circuit board, and a water pump (not shown in the figure). The composite filter element includes a pre-filter element and a post-filter element that are integrally set. Both the composite filter element and the reverse osmosis filter element are installed on the interface of the water circuit board. The water pump is connected to the flow channel inside the water circuit board to increase the internal water pressure and accelerate the water flow rate. The water circuit board has an inlet and multiple outlets. Water from the water source flows in from the inlet of the water circuit board and flows into the pre-filter element, the reverse osmosis filter element, and the post-filter element in sequence for filtration. Pure water, purified water, and wastewater flow out from the outlets.

[0033] After the water purification equipment finishes producing water, due to osmosis, the high-concentration water on the wastewater side of the reverse osmosis filter will seep into the pure water on the pure water side of the reverse osmosis filter, causing the TDS value of the pure water to increase. This contaminates the pure water, resulting in a TDS value of the first cup of water that is too high and unsuitable for drinking.

[0034] Preferably, such as Figures 1 to 4 As shown, the first sidewall 11 of the water circuit board of this utility model is provided with a first mounting seat 13 and a second mounting seat 14. The first mounting seat 13 is used to install the composite filter element, and the second mounting seat 14 is used to install the reverse osmosis filter element. The composite filter element includes a pre-filter element and a post-filter element that are integrally or separately arranged. The water circuit board is provided with a raw water channel 21, a pure water channel 22, a wastewater channel 23, a first channel 24, and a second channel 25. The inlet of the pre-filter element is connected to the raw water channel 21, the outlet of the pre-filter element is connected to the inlet of the reverse osmosis filter element through the first channel 24, and the outlet of the reverse osmosis filter element is connected to the inlet of the reverse osmosis filter element through the second channel 25. The inlet of the post-filter is connected to the pure water channel 22, and the outlet of the post-filter is connected to the wastewater channel 23. The second side wall 12 of the water circuit board is provided with a first interface 31, a second interface 32, a third interface 33 and a fourth interface 34. The first interface 31 is connected to the raw water channel 21, the second interface 32 is connected to the pure water channel 22, the first interface 31 and the second interface 32 are used to install the first reflux control valve, the third interface 33 is connected to the wastewater channel 23, the fourth interface 34 is connected to the first channel 24, and the third interface 33 and the fourth interface 34 are used to install the second reflux control valve.

[0035] For example, such as Figures 1 to 4 As shown, the first sidewall 11 of the water circuit board of this utility model is provided with a first mounting seat 13 and a second mounting seat 14 spaced apart along its length. The first mounting seat 13 is used to install a composite filter element, and the second mounting seat 14 is used to install a reverse osmosis filter element. The composite filter element includes a pre-filter element and a post-filter element integrally formed. The first mounting seat 13 is provided with a first connecting port 131, a second connecting port 132, a third connecting port 133 and a fourth connecting port 134. The second mounting seat 14 is provided with a fifth connecting port 141, a sixth connecting port 142 and a seventh connecting port 143. The first connecting port 131 holds the pre-filter element. The inlet of the filter cartridge is connected to the raw water channel 21. The second connecting port 132 connects the outlet of the pre-filter cartridge to the first channel 24. The first channel 24 is connected to the water pump to achieve pressurization. The fifth connecting port 141 connects the first channel 24 to the inlet of the reverse osmosis filter cartridge. The sixth connecting port 142 connects the second channel 25 to the outlet of the reverse osmosis filter cartridge. The third connecting port 133 connects the second channel 25 to the inlet of the post-filter cartridge. The fourth connecting port 134 connects the outlet of the post-filter cartridge to the pure water channel 22. The seventh connecting port 143 connects the wastewater outlet of the reverse osmosis filter cartridge to the wastewater channel 23.

[0036] The second side wall 12 of the water circuit board is provided with a first interface 31, a second interface 32, a third interface 33 and a fourth interface 34. The second side wall 12 is the side wall opposite to the first side wall 11. The second side wall 12 and the first side wall 11 form a closed internal flow channel. The first interface 31 is connected to the raw water flow channel 21 and the second interface 32 is connected to the pure water flow channel 22. The first interface 31 and the second interface 32 are used to install the first backflow control valve. When the water purification equipment is in standby mode, the first backflow control valve is opened and the water pump is started, so that the pure water in the pure water flow channel 22 can flow back to the raw water flow channel 21, thereby flushing the wastewater, reducing the TDS value of the wastewater and ensuring the safety of the first cup of water for drinking.

[0037] The third interface 33 is connected to the wastewater channel 23, and the fourth interface 34 is connected to the first channel 24. The third interface 33 and the fourth interface 34 are used to install the second backflow control valve. During the water production process, opening the second backflow control valve allows the wastewater to flow back from the wastewater channel 23 to the first channel 24, thereby filtering the wastewater again, improving water utilization, and saving water resources.

[0038] The water circuit board of this utility model has a more compact structure and a more reasonable layout through a reasonable and ingenious water circuit design. It not only increases the function of the water circuit board, but also reduces its volume.

[0039] Preferably, such as Figures 2 to 4 As shown, the second sidewall 12 of this utility model is also provided with a fifth interface 35 and a sixth interface 36. The fifth interface 35 is connected to the first flow channel 24, and the sixth interface 36 is connected to the pure water flow channel 22. The fifth interface 35 and the sixth interface 36 are used to install the third reflux control valve.

[0040] For example, such as Figures 2 to 4 As shown, the fifth interface 35 of this utility model is connected to the first flow channel 24, and the sixth interface 36 is connected to the pure water flow channel 22. The fifth interface 35 and the sixth interface 36 are used to install the third return control valve. When the third return control valve is opened, the pure water in the pure water flow channel 22 can be returned to the first flow channel 24, that is, returned to the water pump. Thus, the water circuit board can provide two pure water return schemes, giving users more choices.

[0041] Preferably, such as Figures 2 to 4As shown, the first flow channel 24 of this utility model includes a first branch 241 and a second branch 242. The first branch 241 is connected to the outlet of the pre-filter element, and the second branch 242 is connected to the inlet of the reverse osmosis filter element. The second side wall 12 is also provided with a seventh interface 37, an eighth interface 38 and a ninth interface 39. The seventh interface 37 is connected to the first branch 241, and both the eighth interface 38 and the ninth interface 39 are connected to the second branch 242. The inlet of the water pump is connected to the seventh interface 37, and the outlet of the water pump is connected to one of the eighth interface 38 and the ninth interface 39. The other of the eighth interface 38 and the ninth interface 39 is closed. The fourth interface 34 and the fifth interface 35 are both connected to the first branch 241.

[0042] For example, such as Figures 2 to 4 As shown, the first branch 241 of this utility model is connected to the outlet of the pre-filter element, and the second branch 242 is connected to the inlet of the reverse osmosis filter element. The water pump connects the first branch 241 and the second branch 242. By setting two eighth interfaces 38 and ninth interfaces 39 in different positions on the second branch 242, the installation position of the water pump can be adjusted according to the internal space of the water purification equipment. Then, the water pump can be connected to the eighth interface 38 or the ninth interface 39 according to the installation position, so that the water pump installation is more flexible and reasonable and adaptable to different products. Among them, the unused eighth interface 38 and the ninth interface 39 need to be closed.

[0043] It should be noted that this utility model does not limit the connection method between the seventh interface 37 and the water pump. For example, those skilled in the art can connect the two through a pipeline, or they can also connect the two by setting an interface on the water circuit board, etc. Such adjustments and changes to the specific connection method between the seventh interface 37 and the water pump do not deviate from the principle and scope of this utility model, and should all be limited to the protection scope of this utility model.

[0044] Preferably, such as Figures 2 to 4 As shown, the raw water flow channel 21 of this utility model includes a third branch 211 and a fourth branch 212. The second side wall 12 is provided with a water inlet 324, a tenth interface 310 and an eleventh interface 311. The water inlet 324 and the tenth interface 310 are both connected to the third branch 211, the eleventh interface 311 is connected to the fourth branch 212, the fourth branch 212 is connected to the water inlet of the pre-filter, the tenth interface 310 and the eleventh interface 311 are used to install the water inlet control valve, and the first interface 31 is connected to the fourth branch 212.

[0045] For example, such as Figures 2 to 4As shown, the water inlet 324 of this utility model is connected to the water source, and water inlet control valves are installed on the tenth interface 310 and the eleventh interface 311, so as to control the flow of water. The first interface 31 is connected to the fourth branch 212, so the water inlet control valve will not affect the pure water return.

[0046] Preferably, such as Figures 2 to 4 As shown, the pure water flow channel 22 of this utility model includes a fifth branch 221, a sixth branch 222, a seventh branch 223, an eighth branch 224, and a ninth branch 225. The second sidewall 12 is provided with a TDS interface 325, a first flow interface 326, a second flow interface 327, a twelfth interface 312, a thirteenth interface 313, a fourteenth interface 314, a fifteenth interface 315, a pressure interface 328, a first pure water outlet 329, and a second pure water outlet 330. The fifth branch 221 is connected to the outlet of the post-filter cartridge. The TDS interface 325 and the first flow interface 326 are both connected to the fifth branch 221. The second interface 32, the sixth interface 36, the second flow interface 327, and the twelfth interface 312 are all connected to the sixth branch 225. Branch 222 is connected. TDS interface 325 is used to install a TDS detection device. First flow interface 326 and second flow interface 327 are used to install a flow detection device. Thirteenth interface 313, fourteenth interface 314 and pressure interface 328 are all connected to seventh branch 223. Twelfth interface 312 and thirteenth interface 313 are used to install a first check valve. Pressure interface 328 is used to install a pressure detection device. Eighth branch 224 and ninth branch 225 are both connected to seventh branch 223. First pure water outlet 329 is connected to eighth branch 224. Fifteenth interface 315 and second pure water outlet 330 are both connected to ninth branch 225. Fourteenth interface 314 and fifteenth interface 315 are used to install pure water control valves.

[0047] For example, such as Figures 2 to 4 As shown, the TDS interface 325 of this utility model can be equipped with a TDS detection device to detect the TDS value of pure water in the water circuit board. The first flow interface 326 and the second flow interface 327 can be equipped with flow detection devices to detect the water flow rate. The twelfth interface 312 and the thirteenth interface 313 can be equipped with a first check valve to prevent water backflow in the water-using equipment due to excessive pressure. The pressure interface 328 can be equipped with a pressure detection device to detect the water pressure inside the water circuit board. The first pure water outlet 329 can be connected to water-using equipment such as a water dispenser to provide pure water. The second pure water outlet 330 can be connected to other drinking water equipment to provide pure water. When other drinking water equipment does not have a faucet or other switch, the fourteenth interface 314 and the fifteenth interface 315 can be equipped with a pure water control valve to control the opening and closing of the second pure water outlet 330.

[0048] Preferably, such as Figures 2 to 4As shown, the wastewater channel 23 of this utility model includes a tenth branch 231, an eleventh branch 232, and a twelfth branch 233. The tenth branch 231 is connected to the wastewater outlet of the reverse osmosis filter element. The first side wall 11 is provided with a sixteenth interface 316 and a seventeenth interface 317. The third interface 33 and the sixteenth interface 316 are both connected to the tenth branch 231, and the seventeenth interface 317 is connected to the eleventh branch 232. The sixteenth interface 316 and the seventeenth interface 317 are used to install a first wastewater control valve. The second side wall 12 is provided with an eighteenth interface 318, a nineteenth interface 319, and a wastewater outlet 331. The eighteenth interface 318 is connected to the eleventh branch 232, and the nineteenth interface 319 and the wastewater outlet 331 are both connected to the twelfth branch 233. The eighteenth interface 318 and the nineteenth interface 319 are used to install a second wastewater control valve.

[0049] For example, such as Figures 2 to 4 As shown, the first sidewall 11 of this utility model is provided with a sixteenth interface 316 and a seventeenth interface 317, which can be used to install a first wastewater control valve. The second sidewall 12 is provided with an eighteenth interface 318, a nineteenth interface 319 and a wastewater outlet 331, which can be used to install a second wastewater control valve. The first wastewater control valve and the second wastewater control valve can be respectively set as an on / off valve and a flow valve to control the on / off state and the flow rate. The wastewater outlet 331 discharges wastewater through a pipeline.

[0050] Preferably, such as Figures 2 to 4 As shown, the water circuit board of this utility model is also provided with a clean water flow channel 26, and the second side wall 12 is also provided with a twentieth interface 320, a twentieth interface 321 and a clean water outlet 332. The twentieth interface 320 is connected to the first flow channel 24, and the twentieth interface 321 and the clean water outlet 332 are both connected to the clean water flow channel 26. The twentieth interface 320 and the twentieth interface 321 are used to install a clean water control valve.

[0051] For example, such as Figures 2 to 4 As shown, the twentieth interface 320 and the thirteenth interface 321 of this utility model can be equipped with a water purification control valve. The water filtered by the pre-filter flows into the water purification channel 26, and the water purification outlet 332 is used to connect with kitchen water equipment, such as a water purification faucet for a vegetable sink. When the water purification faucet for a vegetable sink is electrically controlled, the flow of purified water can be controlled by the water purification control valve.

[0052] Preferably, such as Figures 2 to 4As shown, the water circuit board of this utility model is also provided with a water storage channel 27, and the second side wall 12 is also provided with a twenty-second interface 322 and a twenty-third interface 323. The first side wall 11 is provided with a water storage interface 333. The twenty-second interface 322 is connected to the pure water channel 22, and the twenty-third interface 323 is connected to the water storage channel 27. The twenty-second interface 322 and the twenty-third interface 323 are connected. The two ends of the water storage interface 333 are respectively connected to the water storage channel 27 and the water storage tank.

[0053] For example, such as Figures 2 to 4 As shown, the water storage channel 27 of this utility model is connected to the sixth branch 222 through the twenty-second interface 322 and the twenty-third interface 323, so that pure water can flow into the water storage tank for storage through the water storage channel 27.

[0054] Preferably, the water purification channel 26 of this utility model is provided with a second one-way valve, which is open along the direction of the twenty-first interface 321 toward the water purification outlet 332.

[0055] For example, the present invention can prevent backflow of purified water by providing a second one-way valve in the purified water flow channel 26.

[0056] Preferably, such as Figure 4 As shown, a third one-way valve is provided between the outlet of the reverse osmosis filter element and the second flow channel 25. The third one-way valve is open along the direction from the outlet of the reverse osmosis filter element toward the inlet of the post-filter element. A support structure 15 is provided in the second flow channel 25 to support the third one-way valve.

[0057] For example, such as Figure 4 As shown, the third check valve of this utility model is located below the outlet of the reverse osmosis filter element and is mounted on the support structure 15. The third check valve is a pressure-driven valve. The water pressure compression spring of the reverse osmosis filter element pushes the valve core open, thereby allowing water to flow into the second flow channel 25. In the opposite direction, it pushes the valve core tightly to prevent backflow. The support structure 15 facilitates the installation of the third check valve. The structure is ingeniously designed and easy to maintain and replace.

[0058] Preferably, the pure water flow channel 22 of this utility model is provided with a fourth one-way valve, which is open along the direction of the outlet of the rear filter element toward the second interface 32.

[0059] For example, the fourth one-way valve of this utility model is located in the sixth branch 222 and close to the second interface 32, so as to prevent the raw water in the fourth branch 212 from flowing back.

[0060] It should be noted that the water circuit board of this utility model has multiple reserved interfaces, thus providing more functional options and adapting to more water purification equipment. For example, when the user installs the water purification equipment, if the pipeline machine is not needed temporarily, the first pure water outlet 329 can be closed. When the user needs to connect the pipeline machine later, the pipeline machine can be connected through the first pure water outlet 329. For another example, when the water purification equipment is not equipped with a water storage tank, the twentieth interface 320, the twenty-first interface 321, and the pure water outlet 332 can be closed. For yet another example, when the water purification equipment does not need pure water to flow back to the pump, the fifth interface 35 and the sixth interface 36 can be closed. The water circuit board of this utility model can make corresponding water circuit connections according to the user's needs and the type of product, greatly improving the adaptability and functional diversity of the water circuit board and enhancing the user experience.

[0061] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0062] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water circuit board, characterized in that, The first sidewall (11) of the water circuit board is provided with a first mounting seat (13) and a second mounting seat (14). The first mounting seat (13) is used to install the composite filter element, and the second mounting seat (14) is used to install the reverse osmosis filter element. The composite filter element includes a pre-filter element and a post-filter element that are integrally or separately configured. The water circuit board is provided with a raw water channel (21), a pure water channel (22), a wastewater channel (23), a first channel (24), and a second channel (25). The inlet of the pre-filter is connected to the raw water channel (21), the outlet of the pre-filter is connected to the inlet of the reverse osmosis filter through the first channel (24), the outlet of the reverse osmosis filter is connected to the inlet of the post-filter through the second channel (25), the outlet of the post-filter is connected to the pure water channel (22), and the wastewater outlet of the reverse osmosis filter is connected to the wastewater channel (23). The second sidewall (12) of the water circuit board is provided with a first interface (31), a second interface (32), a third interface (33) and a fourth interface (34). The first interface (31) is connected to the raw water channel (21), the second interface (32) is connected to the pure water channel (22), the first interface (31) and the second interface (32) are used to install a first backflow control valve, the third interface (33) is connected to the wastewater channel (23), the fourth interface (34) is connected to the first channel (24), and the third interface (33) and the fourth interface (34) are used to install a second backflow control valve. The second sidewall (12) is also provided with a fifth interface (35) and a sixth interface (36). The fifth interface (35) is connected to the first flow channel (24), and the sixth interface (36) is connected to the pure water flow channel (22). The fifth interface (35) and the sixth interface (36) are used to install a third reflux control valve.

2. The water channel plate according to claim 1, characterized in that, The first flow channel (24) includes a first branch (241) and a second branch (242). The first branch (241) is connected to the outlet of the pre-filter element, and the second branch (242) is connected to the inlet of the reverse osmosis filter element. The second sidewall (12) is also provided with a seventh interface (37), an eighth interface (38) and a ninth interface (39). The seventh interface (37) is connected to the first branch (241), and the eighth interface (38) and the ninth interface (39) are both connected to the second branch (242). The inlet of the water pump is connected to the seventh interface (37), and the outlet of the water pump is connected to one of the eighth interface (38) and the ninth interface (39). The other of the eighth interface (38) and the ninth interface (39) is closed. The fourth interface (34) and the fifth interface (35) are both connected to the first branch (241).

3. The water channel plate according to claim 1, characterized in that, The raw water channel (21) includes a third branch (211) and a fourth branch (212). The second side wall (12) is provided with an inlet (324), a tenth interface (310) and an eleventh interface (311). The inlet (324) and the tenth interface (310) are both connected to the third branch (211). The eleventh interface (311) is connected to the fourth branch (212). The fourth branch (212) is connected to the inlet of the pre-filter. The tenth interface (310) and the eleventh interface (311) are used to install an inlet control valve. The first interface (31) is connected to the fourth branch (212).

4. The water channel plate according to claim 1, characterized in that, The pure water flow channel (22) includes a fifth branch (221), a sixth branch (222), a seventh branch (223), an eighth branch (224), and a ninth branch (225). The second sidewall (12) is provided with a TDS interface (325), a first flow interface (326), a second flow interface (327), a twelfth interface (312), a thirteenth interface (313), a fourteenth interface (314), a fifteenth interface (315), a pressure interface (328), a first pure water outlet (329), and a second pure water outlet (330). The fifth branch (221) is connected to the outlet of the post-filter cartridge. The TDS interface (325) and the first flow interface (326) are both connected to the fifth branch (221). The second interface (32), the sixth interface (36), the second flow interface (327), and the twelfth interface (312) are all connected to the sixth branch (222). The TDS interface (325) is used to install a TDS detection device. The first flow interface (326) and the second flow interface (327) are used to install a flow detection device. The thirteenth interface (313), the fourteenth interface (314), and the pressure interface (328) are all connected to the seventh branch (223). The twelfth interface (312) and the thirteenth interface (313) are used to install a first check valve. The pressure interface (328) is used to install a pressure detection device. The eighth branch (224) and the ninth branch (225) are all connected to the seventh branch (223). The first pure water outlet (329) is connected to the eighth branch (224). The fifteenth interface (315) and the second pure water outlet (330) are both connected to the ninth branch (225). The fourteenth interface (314) and the fifteenth interface (315) are used to install a pure water control valve.

5. The water channel plate according to claim 1, characterized in that, The wastewater channel (23) includes a tenth branch (231), an eleventh branch (232), and a twelfth branch (233). The tenth branch (231) is connected to the wastewater outlet of the reverse osmosis filter element. The first sidewall (11) is provided with a sixteenth interface (316) and a seventeenth interface (317). The third interface (33) and the sixteenth interface (316) are both connected to the tenth branch (231). The seventeenth interface (317) is connected to the eleventh branch (232). The sixteenth interface (231) is connected to the eleventh branch (232). The first wastewater control valve is installed at the seventeenth interface (316) and the seventeenth interface (317). The eighteenth interface (318), the nineteenth interface (319) and the wastewater outlet (331) are provided on the second side wall (12). The eighteenth interface (318) is connected to the eleventh branch (232). The nineteenth interface (319) and the wastewater outlet (331) are both connected to the twelfth branch (233). The eighteenth interface (318) and the nineteenth interface (319) are used to install the second wastewater control valve.

6. The water channel plate according to claim 1, characterized in that, The water circuit board is also provided with a purified water flow channel (26). The second side wall (12) is also provided with a twentieth interface (320), a twenty-first interface (321), and a purified water outlet (332). The twentieth interface (320) is connected to the first flow channel (24). The twenty-first interface (321) and the purified water outlet (332) are both connected to the purified water flow channel (26). The twentieth interface (320) and the twenty-first interface (321) are used to install a purified water control valve; and / or The water circuit board is also provided with a water storage channel (27), and the second side wall (12) is also provided with a twenty-second interface (322) and a twenty-third interface (323). The first side wall (11) is provided with a water storage interface (333). The twenty-second interface (322) is connected to the pure water channel (22), and the twenty-third interface (323) is connected to the water storage channel (27). The two ends of the water storage interface (333) are respectively connected to the water storage channel (27) and the water storage tank.

7. The water channel plate according to claim 6, characterized in that, The purified water channel (26) is provided with a second one-way valve, which is open along the direction of the 21st interface (321) toward the purified water outlet (332).

8. The water circuit board according to any one of claims 1 to 7, characterized in that, A third check valve is provided between the outlet of the reverse osmosis filter element and the second flow channel (25). The third check valve is open from the outlet of the reverse osmosis filter element toward the inlet of the post-filter element. A support structure (15) is provided inside the second flow channel (25) to support the third check valve; and / or The pure water flow channel (22) is provided with a fourth one-way valve, which is open along the direction of the outlet of the post-filter towards the second interface (32).

9. A water purification device, characterized in that, The water circuit board includes any one of claims 1 to 8.

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