A water softening system

Abstract

The application belongs to the technical field of water treatment, and discloses a soft water system. The soft water system comprises a first resin tank, a second resin tank, a first switching flow path assembly, a salt tank, a communicating vessel and a second switching flow path assembly. The first switching flow path assembly comprises a water inlet, a water outlet and a salt tank connecting port. The salt tank is communicated with the salt tank connecting port. The second switching flow path assembly is connected with the second resin tank. The communicating vessel is connected with the first switching flow path assembly, the first resin tank and the second switching flow path assembly. The first switching flow path assembly and the second switching flow path assembly can switch the flow path, so that the first resin tank and the second resin tank are switched between the water preparation stage of preparing soft water in parallel and the regeneration stage of regenerating resin in series. The first resin tank and the second resin tank can prepare soft water in parallel, so as to increase the supply flow of soft water. The first resin tank and the second resin tank can be regenerated in series, which is beneficial to improving the utilization rate of the regenerated salt solution.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more particularly to a soft water system. Background Technology

[0002] Water softeners are water treatment systems commonly used in industrial or domestic water use. They soften water by adsorbing calcium and magnesium ions in the water with water softening resin.

[0003] Currently, water softeners generally use a single resin tank or a dual resin tank. Single resin tank water softeners have a smaller flow rate and are limited by the capacity of the softening resin, resulting in a smaller amount of softened water produced per cycle. Dual resin tank water softeners often use an alternating working mode where one tank produces water and the other regenerates it. Although this can achieve continuous water production, the water flow rate is small. Some dual resin tank water softeners use a parallel water production method. Although this ensures the output water flow rate, during regeneration, they still use a one-tank-to-one-tank mode, which can easily lead to insufficient utilization of the regenerated salt solution. Summary of the Invention

[0004] The purpose of this invention is to provide a soft water system that can improve the utilization rate of regenerated salt solution while ensuring the output water flow rate.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A soft water system, comprising:

[0007] First resin tank and second resin tank;

[0008] The first switching flow path component includes an inlet, an outlet, and a brine tank connection port;

[0009] A salt tank, connected to the salt tank connection port;

[0010] The second switching flow path assembly is connected to the second resin tank;

[0011] A communicating vessel, the communicating vessel connecting the first switching flow path assembly, the first resin tank and the second switching flow path assembly;

[0012] The first and second flow path switching components can switch flow paths to allow the first and second resin tanks to switch between the water production stage of parallel soft water preparation and the regeneration stage of series regenerated resin.

[0013] As an alternative to the aforementioned water softening system, both the first resin tank and the second resin tank include:

[0014] The tank body, wherein the top of the tank body is provided with a tank opening;

[0015] An upper water distributor is installed at the tank opening and is connected to the tank body;

[0016] A central tube is inserted into the upper water distributor, with the bottom end of the central tube extending into the tank body;

[0017] The lower water distributor is connected to the tank and the central pipe.

[0018] As an alternative to the above-mentioned soft water system, the first switching flow path component further includes a first interface and a second interface, and the communicating vessel includes a first intermediate flow path and a second intermediate flow path. The first intermediate flow path is respectively connected to the first interface, the upper water distributor in the first resin tank and the second switching flow path component.

[0019] The second intermediate flow path is connected to the second interface, the central tube in the first resin tank, and the second switching flow path assembly.

[0020] As an alternative to the above-mentioned soft water system, the first intermediate flow path includes a first main flow path and two first branch flow paths. One end of the first main flow path is connected to the first interface, and the other end is connected to the two first branch flow paths respectively. One of the two first branch flow paths is connected to the upper water distributor in the first resin tank, and the other of the two first branch flow paths is connected to the second switching flow path assembly.

[0021] The second intermediate flow path includes a second main flow path and two second branch flow paths. One end of the second main flow path is connected to the second interface, and the other end is connected to the two second branch flow paths respectively. One of the two second branch flow paths is connected to the central tube in the first resin tank, and the other of the two second branch flow paths is connected to the second switching flow path assembly.

[0022] As an alternative to the aforementioned soft water system, the communicating vessel includes a shell and a pipe layer disposed within the shell, with a first intermediate flow path formed between the shell and the pipe layer, and a second intermediate flow path formed within the pipe layer.

[0023] As an alternative to the above-mentioned soft water system, the shell includes a first shell section and a second shell section that are vertically connected. One end of the first shell section is connected to the first interface, and the other end is connected to the second shell section. The two ends of the second shell section are respectively connected to the first resin tank and the second switching flow path assembly. The second shell section is symmetrically arranged relative to the first shell section.

[0024] The tubular layer includes a first tubular section and a second tubular section that are vertically connected. One end of the first tubular section is connected to the second interface, and the other end is connected to the second tubular section. The two ends of the second tubular section are respectively connected to the first resin tank and the second switching flow path assembly. The second tubular section is symmetrically arranged relative to the first tubular section.

[0025] As an alternative to the above-mentioned soft water system, the first switching flow path component further includes a first wastewater outlet. The inlet can be switched to be connected to the first interface or the second interface, and the second interface can be switched to be connected to the brine tank connection port, the outlet, or the first wastewater outlet.

[0026] The first interface may be optionally connected to the first wastewater outlet.

[0027] As an alternative to the aforementioned water softening system, the first switching flow path component further includes:

[0028] A first pipe connects the water inlet and the first interface;

[0029] The second pipe has one end connected to the first pipe or the water inlet, and the other end connected to the second interface;

[0030] The third pipe has one end connected to the first interface or the first pipe, and the other end connected to the first wastewater outlet;

[0031] The fourth pipe connects the first wastewater outlet and the second interface;

[0032] The fifth pipe connects the salt tank connection port and the second interface;

[0033] The sixth pipe connects the second interface and the outlet.

[0034] A first switching valve is installed on each of the first, second, third, fourth, fifth, and sixth pipes.

[0035] As an optional solution for the above-mentioned soft water system, the second switching flow path component includes a third interface, a fourth interface, a second wastewater outlet, a fifth interface, and a sixth interface. The third interface is connected to the first intermediate flow path, the fourth interface is connected to the second intermediate flow path, the fifth interface is connected to the upper water distributor of the second resin tank, and the fifth interface is connected to the central pipe of the second resin tank.

[0036] The sixth interface can be switched to be connected to either the third interface or the fourth interface;

[0037] The fifth interface can be switched to connect to either the second wastewater outlet or the third interface.

[0038] As an alternative to the aforementioned water softening system, the second flow path switching component further includes:

[0039] The seventh conduit connects the third interface and the fifth interface;

[0040] The eighth pipe connects the fourth interface and the sixth interface;

[0041] The ninth conduit connects the sixth interface and the seventh conduit, or connects the sixth interface and the third interface;

[0042] The tenth pipe connects the fifth interface and the second wastewater outlet;

[0043] A second switching valve is installed on the seventh, eighth, ninth, and tenth pipes.

[0044] The beneficial effects of this invention are:

[0045] In the soft water system provided by this invention, the first resin tank and the second resin tank can be connected in parallel to produce soft water, thereby increasing the supply flow rate of soft water and meeting user needs. The first and second resin tanks can be regenerated in series, with the regenerated salt solution passing sequentially through both tanks to regenerate the soft water resin within each tank. Any regenerated salt solution not fully utilized in the first resin tank will enter the second resin tank for continued use, which improves the utilization rate of the regenerated salt solution and at least the regeneration effect of the soft water resin in the first resin tank. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the soft water system provided by the present invention;

[0047] Figure 2 This is a schematic diagram of the internal flow path of the soft water system provided by the present invention during the water production stage;

[0048] Figure 3 This is a schematic diagram of the internal flow path of the soft water system provided by the present invention during the regeneration stage;

[0049] Figure 4 This is a schematic diagram of the structure of the first switching flow path component provided by the present invention;

[0050] Figure 5 This is a schematic diagram of the structure of the second switching flow path component provided by the present invention;

[0051] Figure 6 This is a schematic diagram of the internal flow path of the first switching flow path component during the water production stage provided by the present invention;

[0052] Figure 7This is a schematic diagram of the internal flow path of the second switching flow path component during the water production stage, water replenishment stage, and forward cleaning provided by the present invention.

[0053] Figure 8 This is a schematic diagram of the internal flow path of the first switching flow path component during the regeneration stage provided by the present invention;

[0054] Figure 9 This is a schematic diagram of the internal flow path of the second switching flow path component during the regeneration stage provided by the present invention;

[0055] Figure 10 This is a schematic diagram of the internal flow path of the soft water system provided by the present invention during the water replenishment stage;

[0056] Figure 11 This is a schematic diagram of the internal flow path of the first switching flow path component during the water replenishment stage provided by the present invention;

[0057] Figure 12 This is a schematic diagram of the internal flow path of the soft water system provided by the present invention during the reverse cleaning stage;

[0058] Figure 13 This is a schematic diagram of the internal flow path of the first switching flow path component during the reverse cleaning stage provided by the present invention;

[0059] Figure 14 This is a schematic diagram of the internal flow path of the second switching flow path component during the reverse cleaning stage provided by the present invention;

[0060] Figure 15 This is a schematic diagram of the internal flow path of the soft water system provided by the present invention during the positive cleaning stage;

[0061] Figure 16 This is a schematic diagram of the internal flow path of the first switching flow path component during the forward cleaning stage provided by the present invention.

[0062] In the picture:

[0063] 10. First resin tank; 11. Tank body; 12. Upper water distributor; 13. Central pipe; 14. Lower water distributor; 20. Second resin tank; 30. First switching flow path assembly; 301. Inlet; 302. Outlet; 303. Brine tank connection port; 304. First wastewater outlet; 305. First interface; 306. Second interface; 31. First pipe; 32. Second pipe; 33. Third pipe; 34. Fourth pipe; 35. 5. Pipeline 5; 36. Pipeline 6; 40. Second switching flow path assembly; 401. Third interface; 402. Fourth interface; 403. Second wastewater outlet; 404. Fifth interface; 405. Sixth interface; 41. Seventh pipe; 42. Eighth pipe; 43. Ninth pipe; 44. Tenth pipe; 50. Communicating vessel; 501. First intermediate flow path; 502. Second intermediate flow path; 51. Shell layer; 52. Tube layer; 60. Salt tank. Detailed Implementation

[0064] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0065] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0068] This embodiment provides a soft water system, such as Figure 1 As shown, it includes a first resin tank 10, a second resin tank 20, a brine tank 60, a communicating vessel 50, a first switching flow path assembly 30, and a second switching flow path assembly 40. Both the first resin tank 10 and the second resin tank 20 are used to hold water softening resin. The first switching flow path assembly 30 includes an inlet 301, an outlet 302, and a brine tank connection port 303. The inlet 301 is used to connect to raw water, the outlet 302 is used to supply softened water, and the brine tank connection port 303 is used to communicate with the brine tank 60. The brine tank 60 is used to hold the regenerated brine solution. The second switching flow path assembly 40 is connected to the second resin tank 20, and the communicating vessel 50 connects the first switching flow path assembly 30, the first resin tank 10, and the second switching flow path assembly 40 to form a passage. The first switching flow path assembly 30 and the second switching flow path assembly 40 can switch flow paths, allowing the first resin tank 10 and the second resin tank 20 to switch between the parallel water production stage and the series regeneration stage of the regenerated resin.

[0069] When the first resin tank 10 and the second resin tank 20 are in the water production stage, they are connected in parallel. The raw water is divided into two streams and flows through the first resin tank 10 and the second resin tank 20 respectively to produce soft water. The produced soft water is supplied through the outlet 302 to increase the supply flow rate of soft water and meet the user's needs. When the first resin tank 10 and the second resin tank 20 are in the regeneration stage, they are connected in series. The regeneration salt solution passes through the first resin tank 10 and the second resin tank 20 sequentially to regenerate the soft water resin in the first resin tank 10 and the second resin tank 20. The regeneration salt solution that is not fully used in the first resin tank 10 will enter the second resin tank 20 for continued use, which helps to improve the utilization rate of the regeneration salt solution and at least the regeneration effect of the soft water resin in the first resin tank 10.

[0070] refer to Figure 1As shown, the first resin tank 10 and the second resin tank 20 have roughly the same structure, both including a tank body 11, an upper water distributor 12, a central pipe 13, and a lower water distributor 14. The top of the tank body 11 has a tank opening, and the tank body 11 contains soft water resin. The upper water distributor 12 is located at the tank opening and communicates with the inside of the tank body 11; the central pipe 13 passes through the upper water distributor 12, and its bottom end extends into the tank body 11; the lower water distributor 14 connects the tank body 11 and the central pipe 13. By cooperating with the upper water distributor 12, the central pipe 13, and the lower water distributor 14, the flow direction of the fluid inside the tank 11 can be changed. For example, the fluid can enter through the top of the central pipe 13, enter the tank 11 through the lower water distributor 14 at the bottom of the central pipe 13, come into contact with the soft water resin inside the tank 11, and then be discharged through the upper water distributor 12; or, the fluid can enter the tank 11 through the upper water distributor 12, come into contact with the soft water resin inside the tank 11, enter the central pipe 13 through the lower water distributor 14, and be discharged outside the tank 11 through the central pipe 13.

[0071] To enable the first switching flow path assembly 30 to communicate with the first resin tank 10 and the second resin tank 20 respectively, such as Figure 1 and Figure 2 As shown, the first switching flow path assembly 30 further includes a first interface 305 and a second interface 306. The communicating vessel 50 includes a first intermediate flow path 501 and a second intermediate flow path 502. The first intermediate flow path 501 is connected to the first interface 305, the upper water distributor 12 in the first resin tank 10, and the second switching flow path assembly 40, respectively. The second intermediate flow path 502 is connected to the second interface 306, the central tube 13 in the first resin tank 10, and the second switching flow path assembly 40, respectively. By setting the first intermediate flow path 501 and the second intermediate flow path 502, the fluid entering the communicating vessel 50 from the first switching flow path assembly 30 can be diverted and directed to the first resin tank 10 and the second resin tank 20, respectively, or the fluid provided by the first resin tank 10 and the second resin tank 20 can be converged and discharged through the first switching flow path assembly 30, thereby realizing the diversion or convergence of fluids according to actual needs.

[0072] When the first resin tank 10 and the second resin tank 20 are in the water production stage, the fluid flow path in the soft water system is as follows: Figure 2As shown. Specifically, raw water enters the first switching flow path assembly 30 through the inlet 301 and then enters the first intermediate flow path 501 through the flow channel within the first switching flow path assembly 30. The first intermediate flow path 501 splits the flow: one stream of raw water enters the first resin tank 10 through the upper distributor 12, softens upon contact with the softening resin, then enters the central pipe 13 of the first resin tank 10 through the lower distributor 14, and then enters the second intermediate flow path 502 through the central pipe 13; the other stream of raw water enters the second resin tank 20 through the second switching flow path assembly 40 through the upper distributor 12, and then enters the second resin tank 20. After softening upon contact with the softening resin, the raw water enters the central pipe 13 of the second resin tank 20 through the lower distributor 14, and then enters the second intermediate flow path 502 through the central pipe 13. The two streams of soft water enter the second intermediate flow path 502 and converge, and then flow out from the outlet 302 after passing through the first switching flow path component 30, so as to supply soft water.

[0073] Optionally, the inlet 301 can be connected to a faucet to prepare soft water by contacting tap water with the water softening resin.

[0074] The first resin tank 10 and the second resin tank 20 in the soft water system provided in this embodiment can produce water simultaneously. The raw water produced can be collected and supplied to increase the soft water supply flow rate and the amount of soft water produced per batch.

[0075] The first intermediate flow path 501 includes a first main flow path and two first branch flow paths. One end of the first main flow path is connected to the first interface 305, and the other end is connected to the two first branch flow paths respectively. One of the two first branch flow paths is connected to the upper water distributor 12 in the first resin tank 10, and the other of the two first branch flow paths is connected to the second switching flow path assembly 40. The second intermediate flow path 502 includes a second main flow path and two second branch flow paths. One end of the second main flow path is connected to the second interface 306, and the other end is connected to the two second branch flow paths respectively. One of the two second branch flow paths is connected to the central pipe 13 in the first resin tank 10, and the other of the two second branch flow paths is connected to the second switching flow path assembly 40.

[0076] Specifically, refer to Figure 1As shown, the communicating vessel 50 includes a shell 51 and a tube layer 52 disposed within the shell 51. A first intermediate flow path 501 is formed between the shell 51 and the tube layer 52, and a second intermediate flow path 502 is formed within the tube layer 52. To make the raw water flow more uniform, the shell 51 includes a first shell section and a second shell section connected vertically. One end of the first shell section is connected to a first interface 305, and the other end is connected to the second shell section. The two ends of the second shell section are respectively connected to a first resin tank 10 and a second switching flow path assembly 40. The second shell section is symmetrically arranged relative to the first shell section so that the fluid in the first shell section can be uniformly distributed to the two ends of the second shell section. Correspondingly, the tube layer 52 includes a first tube section and a second tube section connected vertically. One end of the first tube section is connected to a second interface 306, and the other end is connected to the second tube section. The two ends of the second tube section are respectively connected to the first resin tank 10 and the second switching flow path assembly 40. The second tube section is symmetrically arranged relative to the first tube section so that the fluid in the first tube section can be uniformly distributed to the two ends of the second tube section. A first main flow path is formed between the first shell section and the first pipe section, and a second main flow path is formed within the first pipe section. Two first branch paths are formed between the second shell section and the second pipe section, and two second branch paths are formed within the second pipe section.

[0077] When the first resin tank 10 and the second resin tank 20 are in the regeneration phase, the fluid flow path in the soft water system is as follows: Figure 3 As shown. Specifically, the salt tank 60 provides a regenerated salt solution, which enters the first switching flow path assembly 30 through the salt tank connection port 303 and then flows into the second intermediate flow path 502 through the flow channel within the first switching flow path assembly 30. At this time, the second switching flow path assembly 40 disconnects the tube shell from the second resin tank 20, so that the regenerated salt solution in the second intermediate flow path 502 can only flow to the first resin tank 10. The regenerated salt solution enters the tank body 11 through the central tube 13 and the lower water distributor 14 of the first resin tank 10, and contacts the soft water resin from bottom to top, regenerating the soft water resin by adsorbing calcium and magnesium ions on the soft water resin.

[0078] After contacting the soft water resin in the first resin tank 10, the regenerated salt solution enters the first intermediate flow path 501 through the upper water distributor 12 of the first resin tank 10. It then flows from the first intermediate flow path 501 towards the second switching flow path assembly 40, and after passing through the second switching flow path assembly 40, it enters the central tube 13 of the second resin tank 20. Thus, it is regenerated by contacting the soft water resin in the second resin tank 20 from bottom to top. The used regenerated salt solution enters the second switching flow path assembly 40 through the upper water distributor 12 of the second resin tank 20, and is discharged through the first wastewater outlet of the second switching flow path assembly 40.

[0079] In this embodiment, the first resin tank 10 and the second resin tank 20 in the soft water system can be regenerated in series, allowing the regenerated salt solution to sequentially contact the soft water resin in the first resin tank 10 and the second resin tank 20. This improves the utilization rate of the regenerated salt solution and at least the regeneration effect of the soft water resin in the first resin tank 10. The flow path can be switched via the second flow path switching assembly 40, enabling the first resin tank 10 and the second resin tank 20 to switch between parallel and series connections to meet different operational requirements.

[0080] Furthermore, when the first resin tank 10 and the second resin tank 20 are in the regeneration stage, raw water is supplied through the inlet 301. The raw water enters the second intermediate flow path 502 after passing through the first switching flow path assembly 30, so as to mix the raw water and the regenerated salt solution. Since the inlet 301 is connected to tap water, and tap water has a certain water pressure, the tap water entering the soft water system will change the pressure in the first switching flow path assembly 30, so that the regenerated salt solution in the salt tank 60 can automatically enter the first switching flow path assembly 30 under the action of pressure difference. Therefore, there is no need to set up an additional power source such as a water pump to drive the flow of the regenerated salt solution in the salt tank 60, thus saving energy.

[0081] Understandably, the water softening system has different operating stages. In addition to the water production stage and regeneration stage mentioned above, it also includes a forward cleaning stage, a reverse cleaning stage, and a water replenishment stage, thereby fulfilling the needs of cleaning the water softening resin and replenishing water to the brine tank 60.

[0082] To ensure the first switching flow path assembly 30 can meet the usage requirements of different stages, it further includes a first wastewater outlet 304. The inlet 301 can be switched to be connected to either the first interface 305 or the second interface 306; that is, in some stages, the inlet 301 is connected to the first interface 305, and in some stages, the inlet 301 is connected to the second interface 306. The second interface 306 can be switched to be connected to the brine tank connection port 303, the outlet 302, or the first wastewater outlet 304; that is, in some stages, the second interface 306 is connected to the brine tank connection port 303; in some stages, the second interface 306 is connected to the outlet 302; and in some stages, the second interface 306 is connected to the first wastewater outlet 304. The first interface 305 can be selectively connected to the first wastewater outlet 304; that is, in some stages, the first interface 305 is connected to the first wastewater outlet 304, while in some stages, the first interface 305 is not connected to the first wastewater outlet 304.

[0083] like Figure 4As shown, the first flow path switching assembly 30 also includes multiple pipes and switching valves for realizing flow path switching. Specifically, the first flow path switching assembly 30 includes a first pipe 31, a second pipe 32, a third pipe 33, a fourth pipe 34, a fifth pipe 35, and a sixth pipe 36. The first pipe 31 connects the inlet 301 and the first interface 305; the second pipe 32 connects the first pipe 31 and the second interface 306; the third pipe 33 connects the first pipe 31 and the first wastewater outlet 304; the fourth pipe 34 connects the second interface 306 and the first wastewater outlet 304; the fifth pipe 35 connects the second interface 306 and the brine tank connection port 303; and the sixth pipe 36 connects the second interface 306 and the outlet 302. Switching valves are installed on the first pipe 31, the second pipe 32, the third pipe 33, the fourth pipe 34, the fifth pipe 35, and the sixth pipe 36.

[0084] The third pipe 33 is connected to the first pipe 31 between the switch valve on the first pipe 31 and the first interface 305, so that when the switch valve on the first pipe 31 is closed, the fluid entering the first switching flow path assembly 30 from the first interface 305 can flow into the third pipe 33 from the first pipe 31. The second pipe 32 is connected to the first pipe 31 between the inlet 301 and the switch valve on the first pipe 31, so that when the switch valve on the first pipe 31 is closed, the fluid entering the first switching flow path assembly 30 from the inlet 301 can flow into the second pipe 32 from the first pipe 31.

[0085] In some embodiments, the second pipe 32 can be directly connected to the inlet 301, and the third pipe 33 can be directly connected to the first interface 305, without needing to be installed on the first pipe 31, which can still meet the flow path requirements at different stages.

[0086] like Figure 5As shown, to enable the second switching flow path assembly 40 to meet the usage requirements of different stages, the second switching flow path assembly 40 includes multiple pipes and switching valves. Specifically, the second switching flow path assembly 40 includes a third interface 401, a fourth interface 402, a second wastewater outlet 403, a fifth interface 404, and a sixth interface 405. The third interface 401 is connected to the first intermediate flow path 501 of the communicating vessel 50, and the fourth interface 402 is connected to the second intermediate flow path 502 of the communicating vessel 50; the fifth interface 404 is connected to the upper water distributor 12 of the second resin tank 20, and the sixth interface 405 is connected to the central pipe 13 of the second resin tank 20. The fifth interface 404 can be switched between being connected to the second wastewater outlet 403 or the third interface 401, meaning that in some stages, the fifth interface 404 is connected to the second wastewater outlet 403; and in some stages, the fifth interface 404 is connected to the third interface 401. The sixth interface 405 can be switched to be connected to the fourth interface 402 or the third interface 401. That is, in some stages, the sixth interface 405 is connected to the fourth interface 402; in some stages, the sixth interface 405 is connected to the third interface 401.

[0087] To achieve the aforementioned switching, the second switching flow path assembly 40 further includes a seventh pipe 41, an eighth pipe 42, a ninth pipe 43, and a tenth pipe 44. Specifically, the seventh pipe 41 connects to the third interface 401 and the fifth interface 404; the eighth pipe 42 connects to the fourth interface 402 and the sixth interface 405; the ninth pipe 43 connects to the sixth interface 405 and the seventh pipe 41; and the tenth pipe 44 connects to the fifth interface 404 and the second wastewater outlet 403. Switch valves are installed on the seventh pipe 41, the eighth pipe 42, the ninth pipe 43, and the tenth pipe 44.

[0088] Furthermore, the connection point between the ninth pipe 43 and the seventh pipe 41 is located between the switch valve on the third interface 401 and the seventh pipe 41, so that when the switch valve on the seventh pipe 41 is in the closed state, the ninth pipe 43 can connect the third interface 401 and the sixth interface 405, so that the first intermediate flow channel and the central pipe 13 of the second resin tank 20 can be connected.

[0089] In some embodiments, the ninth pipe 43 can be directly connected to the third interface 401 and the sixth interface 405. Similarly, when the switch valve on the seventh pipe 41 is in the closed state, the ninth pipe 43 can be connected to the third interface 401 and the sixth interface 405.

[0090] When the soft water system is in the water production stage, the fluid flow path within the first switching flow path assembly 30 is as follows: Figure 6 As shown, combined with Figure 2As shown, the first pipe 31 is in a connected state, connecting the inlet 301 and the first interface 305. The sixth pipe 36 is in a connected state, connecting the outlet 302 and the second interface 306. The raw water supplied by the inlet 301 enters the first intermediate flow path 501 of the connector 50 through the first pipe 31, thereby being diverted. One stream of raw water enters the first resin tank 10 through the upper water distributor 12, and after contacting the soft water resin, the prepared soft water sequentially passes through the lower water distributor 14 of the first resin tank 10, the central pipe 13, and the second intermediate flow path 502 of the connector 50, and then enters the sixth pipe 36 through the second interface 306, thereby supplying soft water through the outlet 302.

[0091] like Figure 7 As shown, in the second switching flow path assembly 40, the seventh pipe 41 and the eighth pipe 42 are in a connected state, so that the first intermediate flow path 501 is connected to the upper water distributor 12 of the second resin tank 20, and the second intermediate flow path 502 is connected to the central pipe 13 of the second resin tank 20. Combined with... Figure 6 and Figure 7 As shown, the other source of raw water, which is diverted by the first intermediate flow path 501, enters the second resin tank 20 through the seventh pipe 41 and the upper water distributor 12 of the second resin tank 20. After contacting the soft water resin, the prepared soft water passes through the second intermediate flow path 502 of the second resin tank 20 through the lower water distributor 14, the central pipe 13, the eighth pipe 42, and the communicating vessel 50, and then enters the sixth pipe 36 through the second interface 306, thereby supplying soft water through the outlet 302.

[0092] like Figure 3 and Figure 8 As shown, when the soft water system is in the regeneration stage, the second pipe 32 and the fifth pipe 35 in the first switching flow path assembly 30 are connected to connect the inlet 301 and the second interface 306, and the brine tank connection port 303 is connected to the second interface 306. Tap water enters the second pipe 32 through the inlet 301, creating a pressure difference between the fifth pipe 35 and the air pressure inside the brine tank 60. Under the action of this pressure difference, the brine tank 60 provides a regenerated brine solution, which enters the second intermediate flow path 502 of the communicating vessel 50 through the fifth pipe 35 and mixes with the raw water. At this time, the second intermediate flow path 502 is only connected to the first resin tank 10 through the switching of the second switching flow path assembly 40. That is, the regenerated salt solution can only enter the central tube 13 of the first resin tank 10 through the second intermediate flow path 502. The regenerated salt solution passes through the central tube 13 and the lower water distributor 14 of the first resin tank 10 in sequence and then comes into contact with the soft water resin from bottom to top. The reacted solution enters the first intermediate flow path 501 of the communicating vessel 50 through the upper water distributor 12 of the first resin tank 10, and then enters the second resin tank 20 through the second switching flow path assembly 40 from the first intermediate flow path 501 to regenerate the soft water resin in the second resin tank 20.

[0093] like Figure 9 As shown, when the soft water system is in the regeneration stage, the ninth pipe 43 in the second switching flow path assembly 40 is connected, connecting the third interface 401 and the sixth interface 405 to connect the first intermediate flow path and the central pipe 13 of the second resin tank 20; the tenth pipe 44 is connected, connecting the fifth interface 404 and the second wastewater outlet 403 to connect the upper distributor 12 and the second wastewater outlet 403 of the second resin tank 20. During the regeneration process, the regeneration salt solution passing through the first resin tank 10 enters the third interface 401 through the first intermediate flow path 501 and enters the central pipe 13 of the second resin tank 20 through the ninth pipe 43. After the regeneration salt solution comes into contact with the soft water resin in the second resin tank 20, it passes through the upper distributor 12, the fifth interface 404 and the tenth pipe 44 of the second resin tank 20, and is discharged from the second wastewater outlet 403.

[0094] like Figure 10 and Figure 11 As shown, when the soft water system is in the water replenishment stage, the first pipe 31 in the first switching flow path assembly 30 is connected to connect the inlet 301 and the first interface 305; the fifth pipe 35 is connected to connect the brine tank 60 connection port and the second interface 306. The raw water supplied by the inlet 301 enters the first intermediate flow path 501 of the connector 50 through the first pipe 31, thereby splitting the flow. One stream of raw water enters the first resin tank 10 through the upper water distributor 12, and then flows sequentially through the lower water distributor 14 of the first resin tank 10, the central pipe 13, and the second intermediate flow path 502 of the connector 50 before entering the fifth pipe 35 through the second interface 306, thereby replenishing water to the brine tank 60.

[0095] During the water replenishment process, the raw water can also clean the soft water resin in the first resin tank 10 to improve the subsequent water production effect.

[0096] When the soft water system is in the replenishment phase, such as Figure 7 As shown, the seventh pipe 41 and the eighth pipe 42 in the second switching flow path assembly 40 are in a connected state, so that the first intermediate flow path 501 is connected to the upper water distributor 12 of the second resin tank 20, and the second intermediate flow path 502 is connected to the central pipe 13 of the second resin tank 20. The other raw water diverted by the first intermediate flow path 501 passes through the seventh pipe 41 and the upper water distributor 12 of the second resin tank 20 in sequence and enters the second resin tank 20. After contacting the soft water resin, the water flows through the lower water distributor 14 of the second resin tank 20, the central pipe 13, the eighth pipe 42, and the second intermediate flow path 502 of the connector 50, and then enters the fifth pipe 35 through the second interface 306, thereby replenishing water into the brine tank 60 through the brine tank 60 connection port.

[0097] like Figure 12and Figure 13 As shown, during the reverse cleaning phase of the soft water system, the second pipe 32 and the third pipe 33 are connected. The raw water supplied by the inlet 301 enters the second intermediate flow path 502 of the connector 50 via the second pipe 32, thus being diverted. One stream of raw water enters the first resin tank 10 through the central pipe 13 and the lower distributor 14, rinsing the soft water resin. After rinsing, the water flows sequentially through the upper distributor 12 of the first resin tank 10 and the first intermediate flow path 501 of the connector 50, then enters the third pipe 33 through the first interface 305, and is discharged from the first wastewater outlet 304.

[0098] like Figure 14 As shown, the seventh pipe 41 and the eighth pipe 42 in the second switching flow path assembly 40 are in a connected state, so that the first intermediate flow path 501 is connected to the upper water distributor 12 of the second resin tank 20, and the second intermediate flow path 502 is connected to the central pipe 13 of the second resin tank 20. The other raw water diverted through the second intermediate flow path 502 passes through the eighth pipe 42 and the central pipe 13 and lower water distributor 14 of the second resin tank 20 in sequence and enters the second resin tank 20. After rinsing the soft water resin, the water flows through the upper water distributor 12, the seventh pipe 41, and the first intermediate flow path 501 of the connector 50 in sequence, and then enters the third pipe 33 through the first interface 305, and is discharged from the first wastewater outlet 304.

[0099] like Figure 15 and Figure 16 As shown, when the soft water system is in the forward cleaning phase, the first pipe 31 and the fourth pipe 34 are connected. The raw water supplied by the inlet 301 enters the first intermediate flow path 501 of the connector 50 through the first pipe 31, thereby being diverted. One stream of raw water enters the first resin tank 10 through the upper distributor 12, rinses the soft water resin, and then flows sequentially through the lower distributor 14 of the first resin tank 10, the central pipe 13, and the second intermediate flow path 502 of the connector 50 before entering the fourth pipe 34 through the two interfaces, and is then discharged from the first wastewater outlet 304.

[0100] like Figure 7As shown, the seventh pipe 41 and the eighth pipe 42 in the second switching flow path assembly 40 are in a connected state, so that the first intermediate flow path 501 is connected to the upper water distributor 12 of the second resin tank 20, and the second intermediate flow path 502 is connected to the central pipe 13 of the second resin tank 20. The other raw water diverted by the first intermediate flow path 501 passes through the seventh pipe 41 and the upper water distributor 12 of the second resin tank 20 in sequence and enters the second resin tank 20. After rinsing the soft water resin, the water flows through the lower water distributor 14 of the second resin tank 20, the central pipe 13, the eighth pipe 42, and the second intermediate flow path 502 of the connector 50, and then enters the fourth pipe 34 through the second interface 306, and is discharged from the first wastewater outlet 304.

[0101] In other embodiments, the first switching flow path component 30 and the second switching flow path component 40 can both be replaced by integrated multi-way valves. For example, the first switching flow path component 30 can be a four-position six-way valve, and the second switching flow path component 40 can be a two-position five-way valve, as long as the flow path switching of the above stages can be achieved.

[0102] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A soft water system, characterized in that, include: First resin tank (10) and second resin tank (20); The first switching flow path assembly (30) includes an inlet (301), an outlet (302), and a brine tank connection port (303); A salt tank (60) is connected to the salt tank connection port (303); The second switching flow path assembly (40) is connected to the second resin tank (20); A connector (50) connects the first switching flow path assembly (30), the first resin tank (10), and the second switching flow path assembly (40); The first flow path switching assembly (30) and the second flow path switching assembly (40) can switch flow paths so that the first resin tank (10) and the second resin tank (20) can switch between the water production stage of parallel soft water preparation and the regeneration stage of series regeneration resin. Both the first resin tank (10) and the second resin tank (20) include: The tank body (11) has a tank opening at its top; The upper water distributor (12) is installed at the tank opening and is connected to the inside of the tank body (11); A central tube (13) is inserted into the upper water distributor (12), and the bottom end of the central tube (13) extends into the tank body (11); The lower water distributor (14) is connected to the tank body (11) and the central pipe (13); The first switching flow path assembly (30) further includes a first interface (305) and a second interface (306). The communicating vessel (50) includes a first intermediate flow path (501) and a second intermediate flow path (502). The first intermediate flow path (501) is connected to the first interface (305), the upper water distributor (12) in the first resin tank (10), and the second switching flow path assembly (40), respectively. The second intermediate flow path (502) is connected to the second interface (306), the central tube (13) in the first resin tank (10), and the second switching flow path assembly (40), respectively; The communicating vessel (50) includes a shell (51) and a tube (52) disposed within the shell (51). A first intermediate flow path (501) is formed between the shell (51) and the tube (52), and a second intermediate flow path (502) is formed within the tube (52).

2. The soft water system according to claim 1, characterized in that, The first intermediate flow path (501) includes a first main flow path and two first branch flow paths. One end of the first main flow path is connected to the first interface (305), and the other end is connected to the two first branch flow paths respectively. One of the two first branch flow paths is connected to the upper water distributor (12) in the first resin tank (10), and the other of the two first branch flow paths is connected to the second switching flow path assembly (40). The second intermediate flow path (502) includes a second main flow path and two second branch flow paths. One end of the second main flow path is connected to the second interface (306), and the other end is connected to the two second branch flow paths respectively. One of the two second branch flow paths is connected to the central tube (13) in the first resin tank (10), and the other of the two second branch flow paths is connected to the second switching flow path assembly (40).

3. The soft water system according to claim 1, characterized in that, The shell (51) includes a first shell section and a second shell section connected vertically. One end of the first shell section is connected to the first interface (305), and the other end is connected to the second shell section. The two ends of the second shell section are respectively connected to the first resin tank (10) and the second switching flow path assembly (40). The second shell section is symmetrically arranged relative to the first shell section. The tube layer (52) includes a first tube segment and a second tube segment connected vertically. One end of the first tube segment is connected to the second interface (306), and the other end is connected to the second tube segment. The two ends of the second tube segment are respectively connected to the first resin tank (10) and the second switching flow path assembly (40). The second tube segment is symmetrically arranged relative to the first tube segment.

4. The soft water system according to claim 3, characterized in that, The first switching flow path component (30) further includes a first wastewater outlet (304), the inlet (301) is switchably connected to the first interface (305) or the second interface (306), and the second interface (306) is switchably connected to the salt tank connection port (303), the outlet (302) or the first wastewater outlet (304); The first interface (305) may be selectively connected to the first wastewater outlet (304).

5. The soft water system according to claim 4, characterized in that, The first switching flow path component (30) further includes: The first pipe (31) connects the water inlet (301) and the first interface (305); The second pipe (32) is connected at one end to the first pipe (31) or the inlet (301) and at the other end to the second interface (306); The third pipe (33) is connected at one end to the first interface (305) or the first pipe (31) and at the other end to the first wastewater outlet (304); The fourth pipe (34) connects the first wastewater outlet (304) and the second interface (306); The fifth pipe (35) connects the salt tank connection port (303) and the second interface (306); The sixth pipe (36) connects the second interface (306) and the outlet (302); A first switching valve is provided on the first pipe (31), the second pipe (32), the third pipe (33), the fourth pipe (34), the fifth pipe (35), and the sixth pipe (36).

6. The soft water system according to claim 3, characterized in that, The second switching flow path assembly (40) includes a third interface (401), a fourth interface (402), a second wastewater outlet (403), a fifth interface (404), and a sixth interface (405). The third interface (401) is connected to the first intermediate flow path (501), the fourth interface (402) is connected to the second intermediate flow path (502), the fifth interface (404) is connected to the upper water distributor (12) of the second resin tank (20), and the fifth interface (404) is connected to the central tube (13) of the second resin tank (20). The sixth interface (405) can be switched to be connected to either the third interface (401) or the fourth interface (402); The fifth interface (404) can be switched to connect to either the second wastewater outlet (403) or the third interface (401).

7. The soft water system according to claim 6, characterized in that, The second switching flow path component (40) further includes: The seventh conduit (41) connects the third interface (401) and the fifth interface (404); The eighth pipe (42) connects the fourth interface (402) and the sixth interface (405); The ninth conduit (43) connects the sixth interface (405) and the seventh conduit (41) or connects the sixth interface (405) and the third interface (401); The tenth pipe (44) connects the fifth interface (404) and the second wastewater outlet (403); A second switching valve is provided on the seventh pipe (41), the eighth pipe (42), the ninth pipe (43), and the tenth pipe (44).

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