Double-tank soft water waterway system and water purification equipment

Abstract

The utility model relates to domestic appliance technical field discloses a kind of double-tank soft water waterway system and water purification equipment, comprising: prefilter unit, first resin filter unit, second resin filter unit, regeneration unit and outlet unit;Pre-filter unit is preliminary filtered to water source first, removes impurity;First resin filter unit and second resin filter unit are connected in parallel, and work alternately, when one unit carries out softening water supply, another unit can be regenerated synchronously;Regeneration unit provides brine for resin tank, realizes the ion exchange regeneration of resin;Outlet unit integrates multiple water sources, ensures stable water supply;The double-tank soft water waterway system provided by the utility model realizes the synchronization of soft water supply and regeneration, meets the demand of uninterrupted softening water supply for user, significantly improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a dual-tank soft water system and water purification equipment. Background Technology

[0002] As people's living standards improve, their requirements for the quality of domestic water are increasing. Currently, most water softeners on the market are only equipped with a single resin tank. When the resin fails and needs to be regenerated, it cannot continuously supply softened water, causing inconvenience to users. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: A dual-tank soft water system includes a pre-filter unit, the inlet of which is connected to an external water source, and the pre-filter unit is used for preliminary filtration of the water source. A first resin filter unit and a second resin filter unit are used to soften water. The inlet of the first resin filter unit is connected to the outlet pipe of the pre-filter unit, and the inlet of the second resin filter unit is connected to the outlet pipe of the pre-filter unit. The regeneration unit has its inlet connected to the outlet pipe of the pre-filter unit, and its outlet connected to the pipes of the first resin filter unit and the second resin filter unit. The regeneration unit is used to provide brine to the first resin filter unit and the second resin filter unit. The water outlet unit has its inlet connected to the outlet pipes of the pre-filter unit, the first resin filter unit, and the second resin filter unit, respectively, and its outlet connected to an external water-using device.

[0005] The beneficial effects of this utility model are as follows: By setting up a pre-filtration unit, a dual resin filtration unit, a regeneration unit, and a water outlet unit, it effectively solves the problem that existing water softeners cannot continuously supply softened water during resin regeneration; the pre-filtration unit first filters the water source to remove impurities; the first and second resin filtration units are connected in parallel and work alternately, so that when one unit is supplying softened water, the other unit can regenerate simultaneously; the regeneration unit provides brine to the resin tank to achieve ion exchange regeneration of the resin; the water outlet unit integrates multiple water sources to ensure a stable water supply; the dual-tank softened water system provided by this utility model realizes the simultaneous operation of softened water supply and regeneration, meets the user's need for uninterrupted softened water supply, and significantly improves the user experience.

[0006] As some sub-solutions of the above technical solution, the pre-filtration unit includes a pressure regulating valve, a first solenoid valve, a second solenoid valve, a first check valve, a third solenoid valve, a pre-filter element, and a first drain outlet; the first solenoid valve includes a first valve port, a second valve port, and a third valve port; the second solenoid valve includes a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; the inlet of the pressure regulating valve is connected to an external water source pipeline, the outlet of the pressure regulating valve is connected to the first valve port pipeline, the second valve port is connected to the fourth valve port pipeline, the third valve port is connected to the inlet pipeline of the first check valve, the outlet of the first check valve is connected to the inlet pipeline of the third solenoid valve and the inlet pipeline of the pre-filter element, the outlet of the third solenoid valve is connected to the first drain outlet pipeline, the outlet of the pre-filter element is connected to the seventh valve port pipeline, the fifth valve port is connected to the outlet unit pipeline, and the sixth valve port is connected to the first resin filter unit pipeline.

[0007] As some sub-solutions of the above technical solution, the first resin filtration unit includes a fourth solenoid valve and a first resin tank; the fourth solenoid valve includes an eighth valve port, a ninth valve port and a tenth valve port; the eighth valve port is connected to the sixth valve port via a pipeline, the ninth valve port is connected to the second resin filtration unit via a pipeline, the inlet of the first resin tank is connected to the tenth valve port and the regeneration unit via a pipeline, and the outlet of the first resin tank is connected to the outlet unit via a pipeline.

[0008] As some sub-solutions of the above technical solution, the second resin filtration unit includes a sixth solenoid valve and a second resin tank; the sixth solenoid valve includes a fifteenth valve port, a sixteenth valve port, and a seventeenth valve port; the fifteenth valve port is connected to the ninth valve port via a pipeline, the seventeenth valve port is connected to the regeneration unit via a pipeline, the inlet of the second resin tank is connected to the regeneration unit via the sixteenth valve port, and the outlet of the second resin tank is connected to the outlet unit via a pipeline.

[0009] As some sub-solutions of the above technical solution, the regeneration unit includes a salt tank, a seventh solenoid valve, an eighth solenoid valve, a second one-way valve, and a third one-way valve; the seventh solenoid valve includes an eighteenth valve port, a nineteenth valve port, and a twentieth valve port; the eighth solenoid valve includes a twenty-first valve port, a twenty-second valve port, and a twenty-third valve port; the eighteenth valve port is connected to the seventeenth valve port via a pipeline, the nineteenth valve port is connected to the inlet of the salt tank, the twentieth valve port is connected to the outlet of the salt tank and the inlet of the second one-way valve, the outlet of the second one-way valve is connected to the twenty-first valve port via a pipeline, the twenty-second valve port is connected to the inlet of the second resin tank via a pipeline, the twenty-third valve port is connected to the inlet of the third one-way valve via a pipeline, and the outlet of the third solenoid valve is connected to the inlet of the first resin tank via a pipeline.

[0010] As some sub-solutions of the above technical solution, the water outlet unit includes a fourth one-way valve, a fifth one-way valve, a fifth solenoid valve, a water outlet end, and a second drain outlet; the fifth solenoid valve includes an eleventh valve port, a twelfth valve port, a thirteenth valve port, and a fourteenth valve port; the eleventh valve port is connected to the water outlet pipe of the first resin tank, the twelfth valve port is connected to the water inlet pipe of the fifth one-way valve, the thirteenth valve port is connected to the second drain outlet pipe, the fourteenth valve port is connected to the water outlet pipe of the second resin tank, the water outlet of the fifth one-way valve is connected to the water outlet end pipe, the water inlet of the fourth one-way valve is connected to the second valve port pipe of the second solenoid valve, and the water outlet of the fourth one-way valve is connected to the water outlet end pipe.

[0011] As some sub-solutions of the above technical solution, the dual-tank soft water circuit system further includes a first flow meter, a second flow meter, and a third flow meter; the first flow meter is installed on the pipe connecting the sixth valve port and the eighth valve port, the second flow meter is installed on the pipe connecting the outlet of the first resin tank and the eleventh valve port, and the third flow meter is installed at the outlet port.

[0012] As some sub-solutions of the above technical solution, the dual-tank soft water circuit system further includes a water quality analyzer, a TDS analyzer, and an ejector; the water quality analyzer is installed on the pipe connecting the sixth valve port and the eighth valve port, and the TDS analyzer and the ejector are installed on the pipe connecting the twentieth valve port and the outlet of the salt tank.

[0013] This utility model also provides a water purification device, including the dual-tank soft water circuit system described in the above-mentioned technical solutions.

[0014] The water purification device according to the second aspect embodiment of this utility model, since it includes the dual-tank soft water circuit system of the above-mentioned technical solution, also has corresponding beneficial effects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the dual-tank soft water system provided by this utility model.

[0016] The reference numerals in the attached diagram are as follows: 1-Pressure stabilizing valve, 2-First solenoid valve, 3-Second solenoid valve, 4-First check valve, 5-Third solenoid valve, 6-Pre-filter, 7-First drain outlet, 8-Fourth solenoid valve, 9-First resin tank, 10-Sixth solenoid valve, 11-Second resin tank, 12-Brine tank, 13-Seventh solenoid valve, 14-Eighth solenoid valve, 15-Second check valve, 16-Third check valve, 17-Fourth check valve, 18-Fifth check valve, 19-Fifth solenoid valve, 20-Outlet, 21-Second drain outlet, 22-First flow meter, 23-Second flow meter, 24-Third flow meter 25-Water quality analyzer, 26-TDS analyzer, 27-Ejector, A-First valve port, B-Second valve port, C-Third valve port, D-Fourth valve port, E-Fifth valve port, F-Sixth valve port, G-Seventh valve port, H-Eighth valve port, I-Ninth valve port, J-Tenth valve port, K-Eleventh valve port, L-Twelfth valve port, M-Thirteenth valve port, N-Fourteenth valve port, O-Fifteenth valve port, P-Sixteenth valve port, Q-Seventeenth valve port, R-Eighteenth valve port, S-Nineteenth valve port, T-Twentieth valve port, U-Twenty-first valve port, V-Twenty-second valve port, W-Twenty-third valve port. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Reference Figure 1 The embodiments of this utility model are described below: A dual-tank soft water system includes a pre-filter unit, the inlet of which is connected to an external water source, and the pre-filter unit is used for preliminary filtration of the water source. A first resin filter unit and a second resin filter unit are used to soften water. The inlet of the first resin filter unit is connected to the outlet pipe of the pre-filter unit, and the inlet of the second resin filter unit is connected to the outlet pipe of the pre-filter unit. The regeneration unit has its inlet connected to the outlet pipe of the pre-filter unit, and its outlet connected to the pipes of the first resin filter unit and the second resin filter unit. The regeneration unit is used to provide brine to the first resin filter unit and the second resin filter unit. The water outlet unit has its inlet connected to the outlet pipes of the pre-filter unit, the first resin filter unit, and the second resin filter unit, respectively, and its outlet connected to an external water-using device.

[0020] This invention effectively solves the problem of existing water softeners being unable to continuously supply softened water during resin regeneration by setting up a pre-filtration unit, a dual resin filtration unit, a regeneration unit, and a water outlet unit. The pre-filtration unit first filters the water source to remove impurities. The first and second resin filtration units are connected in parallel and work alternately, so that when one unit is supplying softened water, the other unit can regenerate simultaneously. The regeneration unit provides brine to the resin tank to achieve ion exchange regeneration of the resin. The water outlet unit integrates multiple water sources to ensure a stable water supply. The dual-tank softened water system provided by this invention realizes the simultaneous operation of softened water supply and regeneration, meeting users' needs for uninterrupted softened water supply and significantly improving the user experience.

[0021] Specifically, the pre-filtration unit includes a pressure regulating valve 1, a first solenoid valve 2, a second solenoid valve 3, a first one-way valve 4, a third solenoid valve 5, a pre-filter element 6, and a first drain port 7; the first solenoid valve 2 includes a first valve port A, a second valve port B, and a third valve port C; the second solenoid valve 3 includes a fourth valve port D, a fifth valve port E, a sixth valve port F, and a seventh valve port G; the inlet of the pressure regulating valve 1 is connected to an external water source pipeline, the outlet of the pressure regulating valve 1 is connected to the pipeline of the first valve port A, and the second valve port B... The third valve port C is connected to the inlet pipe of the first one-way valve 4, the outlet of the first one-way valve 4 is connected to the inlet pipe of the third solenoid valve 5 and the inlet pipe of the pre-filter 6, the outlet of the third solenoid valve 5 is connected to the first drain outlet 7, the outlet of the pre-filter 6 is connected to the seventh valve port G, the fifth valve port E is connected to the outlet unit pipe, and the sixth valve port F is connected to the first resin filter unit pipe.

[0022] In this embodiment, the pressure stabilizing valve 1 is used to stabilize the water pressure entering the system and protect the normal operation of subsequent components; the first solenoid valve 2, the second solenoid valve 3, and the third solenoid valve 5 are used to control the on / off state and direction of water flow, guiding the water flow into different treatment units; the pre-filter 6 is used to filter impurities and particles in the water; the first drain port 7 is used to discharge the wastewater generated during the rinsing process of the pre-filter 6; the first check valve 4 is used to ensure that the wastewater generated during the rinsing process of the pre-filter 6 can be discharged through the first drain port 7 without backflow.

[0023] Specifically, the first resin filtration unit includes a fourth solenoid valve 8 and a first resin tank 9; the fourth solenoid valve 8 includes an eighth valve port H, a ninth valve port I, and a tenth valve port J; the eighth valve port H is connected to the sixth valve port F via a pipeline, the ninth valve port I is connected to the second resin filtration unit via a pipeline, the inlet of the first resin tank 9 is connected to the tenth valve port J and the regeneration unit via a pipeline, and the outlet of the first resin tank 9 is connected to the outlet unit via a pipeline.

[0024] In this embodiment, the fourth solenoid valve 8 is used to manage the water flow into the first resin tank 9; the first resin tank 9 is filled with resin, which is used to soften the water flow and remove hardness ions such as calcium and magnesium from the water.

[0025] Specifically, the second resin filtration unit includes a sixth solenoid valve 10 and a second resin tank 11; the sixth solenoid valve 10 includes a fifteenth valve port O, a sixteenth valve port P, and a seventeenth valve port Q; the fifteenth valve port O is connected to the ninth valve port I via a pipeline, the seventeenth valve port Q is connected to the regeneration unit via a pipeline, the inlet of the second resin tank 11 is connected to the regeneration unit via the sixteenth valve port P, and the outlet of the second resin tank 11 is connected to the outlet unit via a pipeline.

[0026] In this embodiment, the sixth solenoid valve 10 is used to manage the water flow into the second resin tank 11; the second resin tank 11 is filled with resin, which is used to soften the water flow and remove hardness ions such as calcium and magnesium from the water.

[0027] Specifically, the regeneration unit includes a salt tank 12, a seventh solenoid valve 13, an eighth solenoid valve 14, a second one-way valve 15, and a third one-way valve 16. The seventh solenoid valve 13 includes an eighteenth valve port R, a nineteenth valve port S, and a twentieth valve port T. The eighth solenoid valve 14 includes a twenty-first valve port U, a twenty-second valve port V, and a twenty-third valve port W. The eighteenth valve port R is connected to the seventeenth valve port Q via a pipe. The nineteenth valve port S is connected to the inlet of the salt tank 12. The twentieth valve port T is connected to the outlet of the salt tank 12 and the inlet of the second one-way valve 15. The outlet of the second one-way valve 15 is connected to the twenty-first valve port U via a pipe. The twenty-second valve port V is connected to the inlet of the second resin tank 11 via a pipe. The twenty-third valve port W is connected to the inlet of the third one-way valve 16 via a pipe. The outlet of the third solenoid valve 15 is connected to the inlet of the first resin tank 9 via a pipe.

[0028] In this embodiment, the salt tank 12 is used to store soft water salt to provide brine for resin regeneration; the seventh solenoid valve 13 and the eighth solenoid valve 14 are used to control the flow of water into and out of the salt tank 12; the second check valve 15 and the third check valve 16 are used to manage the flow direction of brine and prevent water from flowing back into the salt tank 12. Salt tank 12 is a dry salt tank, which normally stores dry salt granules. It occupies little space, is easy to store and transport, and also reduces problems such as salt clumping. Two hours before the resin regeneration process is triggered, water is injected into the salt tank to allow the dry salt granules enough time to dissolve and form brine, providing the brine source required for resin regeneration. The salt tank 12 has a partition inside, which separates the dry salt particles from the brine to prevent the dry salt particles from directly contacting the brine and forming salt bridges (a phenomenon that hinders the dissolution of salt particles and the flow of brine, affecting the salt dissolution efficiency and brine quality). The presence of the partition ensures that the salt particles can dissolve evenly, improving the quality of the brine and the regeneration effect.

[0029] Specifically, the water outlet unit includes a fourth one-way valve 17, a fifth one-way valve 18, a fifth solenoid valve 19, a water outlet 20, and a second drain outlet 21; the fifth solenoid valve 19 includes an eleventh valve port K, a twelfth valve port L, a thirteenth valve port M, and a fourteenth valve port N; the eleventh valve port K is connected to the water outlet pipe of the first resin tank 9, the twelfth valve port L is connected to the water inlet pipe of the fifth one-way valve 18, the thirteenth valve port M is connected to the pipe of the second drain outlet 21, the fourteenth valve port N is connected to the water outlet pipe of the second resin tank 11, the water outlet of the fifth one-way valve 18 is connected to the water outlet 20 pipe, the water inlet of the fourth one-way valve 17 is connected to the pipe of the second valve port B of the second solenoid valve 3, and the water outlet of the fourth one-way valve 17 is connected to the pipe of the water outlet 20.

[0030] In this embodiment, the fourth check valve 17 and the fifth check valve 18 are used to ensure that the water flows in a predetermined direction to the outlet 20; the fifth solenoid valve 19 is used to control the opening and closing of the outlet, managing the soft water after it has been filtered by the first resin tank 9 and the second resin tank 11 to enter the outlet 20, and at the same time controlling the opening and closing of the drain outlet to discharge the wastewater generated during the resin regeneration process; the outlet 20 is the outlet of the softened water; the second drain outlet 21 is used to discharge the wastewater generated during the resin regeneration process.

[0031] Specifically, the dual-tank soft water system further includes a first flow meter 22, a second flow meter 23, and a third flow meter 24; the first flow meter 22 is installed on the pipe connecting the sixth valve port F and the eighth valve port H, the second flow meter 23 is installed on the pipe connecting the outlet of the first resin tank 9 and the eleventh valve port K, and the third flow meter 24 is installed at the port of the outlet end 20.

[0032] In this embodiment, the first flow meter 22 is used to calculate the flow rate through the resin, that is, the total amount of water softened by the resin. By monitoring the data of the first flow meter 22, the degree of resin usage can be understood. When the flow rate reaches a preset value, it can be used as a trigger condition for resin regeneration, ensuring that the resin can be regenerated in time after treating a certain amount of water to maintain the quality of the softened water. The second flow meter 23 is specifically used to calculate the flow rate of the resin in the first resin tank 9, further accurately grasping the working status of the first resin tank 9 and the resin consumption, providing a more accurate basis for the regeneration of the first resin tank 9. The third flow meter 24 is used to calculate the flow rate of the pre-filter 6, reflecting the usage of the pre-filter 6. When the amount of water filtered by the pre-filter 6 reaches its design capacity, it reminds the user to replace the pre-filter 6 to ensure the effect of pre-filtration and prevent excessive impurities from affecting the subsequent resin softening process.

[0033] Specifically, the dual-tank soft water system further includes a water quality analyzer 25, a TDS analyzer 26, and an ejector 27; the water quality analyzer 25 is installed on the pipe connecting the sixth valve port F and the eighth valve port H, and the TDS analyzer 26 and the ejector 27 are installed on the pipe connecting the twentieth valve port T and the outlet of the salt tank 12.

[0034] In this embodiment, the water quality analyzer 25 is used to detect the hardness of the water, which is a key indicator for measuring the quality of softened water. By monitoring the hardness of the effluent in real time, the softening effect and saturation of the resin are judged. When the hardness value increases, it indicates that the softening capacity of the resin has decreased. At this time, even if the flow meter does not reach the set value, the resin regeneration program can be triggered to restore the softening performance of the resin in time, ensuring that the quality of the effluent always meets the requirements. The TDS meter 26 is used to detect the TDS value of the softened water effluent, which can indirectly reflect the state and dissolution of the softened water salt. If the TDS value is abnormal, it may mean that the softened water salt has failed or is not fully dissolved. In this case, the user is reminded to add or replace the softened water salt to ensure the effect of resin regeneration and the quality of softened water. The ejector 27 is installed on the pipe between the salt tank 12 and the resin tank. When the resin needs to be regenerated, the ejector 27 uses the kinetic energy of the water flow to generate negative pressure, draws in the brine in the salt tank 12, and transports it to the resin tank. This negative pressure principle allows the brine to enter the resin tank smoothly, thereby realizing the regeneration process of the resin. In addition, the ejector 27 can also fully mix the drawn-in brine with the water flow to form a uniform brine solution. Only a uniform brine can effectively exchange ions with the resin and restore the resin's softening properties.

[0035] The operating principle of the dual-tank soft water system is as follows: Example 1, venting of resin tank: After the system is started up for the first time or after regeneration is complete, the resin tank needs to be vented to ensure that no air remains inside the tank. This prevents air from entering the water supply system and affecting water quality and supply stability. The specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is open; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is open, the thirteenth valve port M is closed, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is open, and the seventeenth valve port Q is closed; in the seventh solenoid valve 13, the eighteenth valve port R is closed, the nineteenth valve port S is closed, and the twentieth valve port T is closed; in the eighth solenoid valve 14, the twenty-first valve port U is closed, the twenty-second valve port V is closed, and the twenty-third valve port W is closed; Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8, sixth solenoid valve 10 → first resin tank 9, second resin tank 11 → fifth solenoid valve 19 → water outlet 20; water flows into the resin tank, and the air inside the tank is expelled. When the water flow is uniform, it indicates that the air venting is complete.

[0036] Example 2, water is added to salt tank 12: Before regenerating the resin tank, water needs to be added to salt tank 12 to fully dissolve the dry salt and form brine, preparing for the subsequent salt absorption process. The specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is closed, and the seventeenth valve port Q is open; in the seventh solenoid valve 13, the eighteenth valve port R is closed, the nineteenth valve port S is closed, and the twentieth valve port T is closed; in the eighth solenoid valve 14, the twenty-first valve port U is open, the twenty-second valve port V is open, and the twenty-third valve port W is open; Therefore, the water flow path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → sixth solenoid valve 10 → seventh solenoid valve 13 → salt tank 12 → eighth solenoid valve 14 → first resin tank 9 / second resin tank 11 → fifth solenoid valve 19 → second drain outlet 21; water flows into the salt tank 12, and excess water is discharged through the second drain outlet 21. The flow stops when the salt tank 12 is filled with water.

[0037] Example 3, Filtered Water Supply: The system can provide water filtered by pre-filter 6, suitable for water needs that do not require softening. The specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is open, the sixth valve port F is closed, and the seventh valve port G is open; the third solenoid valve 5 is closed; the fourth solenoid valve 8 is closed; the fifth solenoid valve 19 is closed; the sixth solenoid valve 10 is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth check valve 17 → outlet 20; after the water enters the pre-filter 6 for filtration, it flows out to the outlet 20 and is directly supplied to the external water-using equipment.

[0038] Example 4, pre-filter 6 flushing: Regularly flush the pre-filter cartridge 6 to remove impurities from its surface, ensuring effective filtration and extending its lifespan. The specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is open, and the third valve port C is closed; in the second solenoid valve 3, the fourth valve port D is open, the fifth valve port E is closed, the sixth valve port F is closed, and the seventh valve port G is open; the third solenoid valve 5 is open; the fourth solenoid valve 8 is closed; the fifth solenoid valve 19 is closed; the sixth solenoid valve 10 is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 / second solenoid valve 3 → pre-filter 6 → third solenoid valve 5 → first drain port 7; the water flow reverses to flush the pre-filter 6, and discharges impurities from the system through the first drain port 7.

[0039] Example 5, Softened water supply in the first resin tank 9: When only one resin tank (first resin tank 9) is working, the system can provide softened water, and the specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is closed; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is closed, and the tenth valve port J is open; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is open, the thirteenth valve port M is closed, and the fourteenth valve port N is closed; the sixth solenoid valve 10 is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → first resin tank 9 → fifth solenoid valve 19 → water outlet 20; after the water is softened by the first resin tank 9, it is supplied to the water-using equipment.

[0040] Example 6, Softened water supply in the second resin tank 11: When only one resin tank (second resin tank 11) is working, the system can provide softened water, and the specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is closed; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is closed, the twelfth valve port L is open, the thirteenth valve port M is closed, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is open, and the seventeenth valve port Q is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → sixth solenoid valve 10 → second resin tank 11 → fifth solenoid valve 19 → water outlet 20; after the water is softened by the second resin tank 11, it is supplied to the water-using equipment.

[0041] Example 7: Dual-tank softened water supply: When both resin tanks are operating simultaneously, the system can provide softened water. The specific steps are as follows: In the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is closed; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is open; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is open, the thirteenth valve port M is closed, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is open, and the seventeenth valve port Q is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8, sixth solenoid valve 10 → first resin tank 9, second resin tank 11 → fifth solenoid valve 19 → water outlet 20; after the water flows through the first resin tank 9 and the second resin tank 11 for softening treatment, it is supplied to the water-using equipment.

[0042] Example 8, Regeneration of the first resin tank 9: When the first resin tank 9 needs regeneration, the system automatically switches to regeneration mode, which includes two stages: salt absorption and rinsing. During the salt absorption stage, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is closed; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is closed, and the seventeenth valve port Q is open; in the seventh solenoid valve 13, the eighteenth valve port R is open, the nineteenth valve port S is closed, and the twentieth valve port T is open; in the eighth solenoid valve 14, the twenty-first valve port U is open, the twenty-second valve port V is closed, and the twenty-third valve port W is open; Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → sixth solenoid valve 10 → seventh solenoid valve 13 → salt tank 12 → eighth solenoid valve 14 → first resin tank 9 → fifth solenoid valve 19 → second drain outlet 21; brine enters the first resin tank 9 from the salt tank 12 for ion exchange regeneration. During the flushing phase, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is open; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is closed; the sixth solenoid valve 10 is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → first resin tank 9 → fifth solenoid valve 19 → second drain outlet 21; rinse the first resin tank 9 with clean water to discharge the residual brine and impurities from the system, thus completing the regeneration.

[0043] Example 9, Regeneration of the second resin tank 11: When the second resin tank 11 needs regeneration, the system automatically switches to regeneration mode, which includes two stages: salt absorption and rinsing. During the salt absorption stage, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is closed, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is closed, and the seventeenth valve port Q is open; in the seventh solenoid valve 13, the eighteenth valve port R is open, the nineteenth valve port S is closed, and the twentieth valve port T is open; in the eighth solenoid valve 14, the twenty-first valve port U is open, the twenty-second valve port V is open, and the twenty-third valve port W is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → sixth solenoid valve 10 → seventh solenoid valve 13 → salt tank 12 → eighth solenoid valve 14 → second resin tank 11 → fifth solenoid valve 19 → second drain outlet 21; brine enters the second resin tank 11 from the salt tank 12 for ion exchange regeneration. During the flushing phase, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is closed, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is open, and the seventeenth valve port Q is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → second resin tank 11 → fifth solenoid valve 19 → second drain outlet 21; rinse the second resin tank 11 with clean water to discharge the residual brine and impurities from the system, thus completing the regeneration.

[0044] Example 10: Regeneration of the first resin tank 9 and the second resin tank 11: When both the first resin tank 9 and the second resin tank 11 require regeneration, the system automatically switches to regeneration mode, which includes two stages: salt absorption and rinsing. During the salt absorption stage, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is closed; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is closed, and the seventeenth valve port Q is open; in the seventh solenoid valve 13, the eighteenth valve port R is open, the nineteenth valve port S is closed, and the twentieth valve port T is open; in the eighth solenoid valve 14, the twenty-first valve port U is open, the twenty-second valve port V is open, and the twenty-third valve port W is open. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8 → sixth solenoid valve 10 → seventh solenoid valve 13 → salt tank 12 → eighth solenoid valve 14 → first resin tank 9, second resin tank 11 → fifth solenoid valve 19 → second drain outlet 21; brine enters the first resin tank 9 and the second resin tank 11 from the salt tank 12 for ion exchange regeneration. During the flushing phase, in the first solenoid valve 2, the first valve port A is open, the second valve port B is closed, and the third valve port C is open; in the second solenoid valve 3, the fourth valve port D is closed, the fifth valve port E is closed, the sixth valve port F is open, and the seventh valve port G is open; the third solenoid valve 5 is closed; in the fourth solenoid valve 8, the eighth valve port H is open, the ninth valve port I is open, and the tenth valve port J is open; in the fifth solenoid valve 19, the eleventh valve port K is open, the twelfth valve port L is closed, the thirteenth valve port M is open, and the fourteenth valve port N is open; in the sixth solenoid valve 10, the fifteenth valve port O is open, the sixteenth valve port P is open, and the seventeenth valve port Q is closed; the seventh solenoid valve 13 is closed; and the eighth solenoid valve 14 is closed. Therefore, the water path is as follows: external water source → first solenoid valve 2 → pre-filter 6 → second solenoid valve 3 → fourth solenoid valve 8, sixth solenoid valve 10 → first resin tank 9, second resin tank 11 → fifth solenoid valve 19 → second drain outlet 21; rinse the first resin tank 9 and the second resin tank 11 with clean water to discharge the residual brine and impurities from the system, thus completing the regeneration.

[0045] This utility model also provides a water purification device, including the dual-tank soft water circuit system described in the above-mentioned technical solutions.

[0046] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dual-tank soft water system, characterized in that, include: A pre-filter unit, the inlet of which is connected to an external water source, is used for preliminary filtration of the water source; A first resin filter unit and a second resin filter unit are used to soften water. The inlet of the first resin filter unit is connected to the outlet pipe of the pre-filter unit, and the inlet of the second resin filter unit is connected to the outlet pipe of the pre-filter unit. The regeneration unit has its inlet connected to the outlet pipe of the pre-filter unit, and its outlet connected to the pipes of the first resin filter unit and the second resin filter unit. The regeneration unit is used to provide brine to the first resin filter unit and the second resin filter unit. The water outlet unit has its inlet connected to the outlet pipes of the pre-filter unit, the first resin filter unit, and the second resin filter unit, respectively, and its outlet connected to an external water-using device.

2. The dual-tank soft water system according to claim 1, characterized in that, The pre-filtration unit includes a pressure regulating valve, a first solenoid valve, a second solenoid valve, a first check valve, a third solenoid valve, a pre-filter element, and a first drain outlet. The first solenoid valve includes a first valve port, a second valve port, and a third valve port. The second solenoid valve includes a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port. The inlet of the pressure regulating valve is connected to an external water source pipe, the outlet of the pressure regulating valve is connected to the first valve port pipe, the second valve port is connected to the fourth valve port pipe, the third valve port is connected to the inlet pipe of the first check valve, the outlet of the first check valve is connected to the inlet pipe of the third solenoid valve and the inlet pipe of the pre-filter element, the outlet of the third solenoid valve is connected to the first drain outlet pipe, the outlet of the pre-filter element is connected to the seventh valve port pipe, the fifth valve port is connected to the outlet unit pipe, and the sixth valve port is connected to the first resin filter unit pipe.

3. The dual-tank soft water system according to claim 2, characterized in that, The first resin filtration unit includes a fourth solenoid valve and a first resin tank; the fourth solenoid valve includes an eighth valve port, a ninth valve port, and a tenth valve port; the eighth valve port is connected to the sixth valve port via a pipeline, the ninth valve port is connected to the second resin filtration unit via a pipeline, the inlet of the first resin tank is connected to the tenth valve port and the regeneration unit via a pipeline, and the outlet of the first resin tank is connected to the outlet unit via a pipeline.

4. The dual-tank soft water system according to claim 3, characterized in that, The second resin filtration unit includes a sixth solenoid valve and a second resin tank; the sixth solenoid valve includes a fifteenth valve port, a sixteenth valve port, and a seventeenth valve port; the fifteenth valve port is connected to the ninth valve port via a pipeline, the seventeenth valve port is connected to the regeneration unit via a pipeline, the inlet of the second resin tank is connected to the regeneration unit via the sixteenth valve port, and the outlet of the second resin tank is connected to the outlet unit via a pipeline.

5. The dual-tank soft water system according to claim 4, characterized in that, The regeneration unit includes a salt tank, a seventh solenoid valve, an eighth solenoid valve, a second check valve, and a third check valve. The seventh solenoid valve includes an eighteenth, nineteenth, and twentieth valve port. The eighth solenoid valve includes a twenty-first, twenty-second, and twenty-third valve port. The eighteenth valve port is connected to the seventeenth valve port via a pipe. The nineteenth valve port is connected to the inlet of the salt tank. The twentieth valve port is connected to the outlet of the salt tank and the inlet of the second check valve. The outlet of the second check valve is connected to the twenty-first valve port via a pipe. The twenty-second valve port is connected to the inlet of the second resin tank via a pipe. The twenty-third valve port is connected to the inlet of the third check valve via a pipe. The outlet of the third solenoid valve is connected to the inlet of the first resin tank via a pipe.

6. The dual-tank soft water system according to claim 5, characterized in that, The water outlet unit includes a fourth one-way valve, a fifth one-way valve, a fifth solenoid valve, a water outlet, and a second drain outlet; the fifth solenoid valve includes an eleventh valve port, a twelfth valve port, a thirteenth valve port, and a fourteenth valve port; the eleventh valve port is connected to the water outlet pipe of the first resin tank, the twelfth valve port is connected to the water inlet pipe of the fifth one-way valve, the thirteenth valve port is connected to the second drain outlet pipe, the fourteenth valve port is connected to the water outlet pipe of the second resin tank, the water outlet of the fifth one-way valve is connected to the water outlet pipe, the water inlet of the fourth one-way valve is connected to the second valve port pipe of the second solenoid valve, and the water outlet of the fourth one-way valve is connected to the water outlet pipe.

7. The dual-tank soft water system according to claim 6, characterized in that, The dual-tank soft water system further includes a first flow meter, a second flow meter, and a third flow meter; the first flow meter is installed on the pipe connecting the sixth valve port and the eighth valve port, the second flow meter is installed on the pipe connecting the outlet of the first resin tank and the eleventh valve port, and the third flow meter is installed at the outlet port.

8. The dual-tank soft water system according to claim 7, characterized in that, The dual-tank soft water system also includes a water quality analyzer, a TDS analyzer, and an ejector; the water quality analyzer is installed on the pipe connecting the sixth valve port and the eighth valve port, and the TDS analyzer and the ejector are installed on the pipe connecting the twentieth valve port and the outlet of the salt tank.

9. A water purification device, characterized in that, Includes the dual-tank soft water system as described in any one of claims 1 to 8.

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