Water softening system

Abstract

The invention belongs to the technical field of water treatment, and discloses a water softening system. The water softening system comprises a first resin tank, a second resin tank, a first switching flow path assembly, a salt box, 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 box connector; the salt box is communicated with the salt box 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 flow paths, so that the first resin tank and the second resin tank are switched between a water preparation stage of preparing soft water in parallel and a regeneration stage of regenerating resin in series. The first resin tank and the second resin tank can be connected in parallel to prepare soft water so as to increase the supply flow of the soft water. The first resin tank and the second resin tank can be connected in series for regeneration, and the utilization rate of the regenerated salt solution is increased.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a soft water system. Background Art

[0002] A water softener is a water treatment system often used in industrial or civil water use. It softens the water by absorbing calcium and magnesium ions in the water through water softening resin.

[0003] At present, water softeners generally use a single resin tank or a double resin tank. The flow rate of a water softener with a single resin tank is relatively small, and due to the limitation of the capacity of the softening resin, the amount of soft water that can be prepared at a time is small; at present, water softeners with double resin tanks mostly adopt an alternating working mode of one tank making water and the other tank regenerating. Although continuous water production can be achieved, the water flow rate is small; some water softeners with double resin tanks adopt a parallel water production method. Although the water flow rate is guaranteed, during regeneration, one tank is still used to make water and the other tank is regenerated, which easily leads to the inability to fully utilize the regenerated salt solution. Summary of the invention

[0004] The object of the present invention is to provide a soft water system which can improve the utilization rate of the regenerated salt solution while ensuring the water flow rate.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A soft water system, comprising:

[0007] a first resin tank and a second resin tank;

[0008] The first switching flow path component includes a water inlet, a water outlet and a salt box connection port;

[0009] a salt box, connected to the salt box connection port;

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

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

[0012] The first switching flow path assembly and the second switching flow path assembly can switch the flow paths so that the first resin tank and the second resin tank are switched between a water production stage of preparing soft water in parallel and a regeneration stage of regenerating the resin in series.

[0013] As an optional solution of the above-mentioned soft water system, the first resin tank and the second resin tank both include:

[0014] A tank body, wherein a tank opening is arranged on the top of the tank body;

[0015] An upper water distributor is arranged at the tank mouth, and the upper water distributor is communicated with the tank body;

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

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

[0018] As an optional solution of the above-mentioned soft water system, the first switching flow path component further includes a first interface and a second interface, the communicating vessel includes a first intermediate flow path and a second intermediate flow path, and 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 respectively connected to the second interface, the central tube in the first resin tank, and the second switching flow path assembly.

[0020] As an optional solution of 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 respectively connected to two first branch flow paths, 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 respectively connected to two second branch flow paths, one of the two second branch flow paths is connected to the center 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 optional solution of the above-mentioned soft water system, the communicating vessel includes a shell layer and a tube layer arranged in the shell layer, a first intermediate flow path is formed between the shell layer and the tube layer, and the second intermediate flow path is formed in the tube layer.

[0023] As an optional solution of the above-mentioned soft water system, the shell layer includes a first shell segment and a second shell segment that are vertically connected, one end of the first shell segment is connected to the first interface, and the other end is connected to the second shell segment, both ends of the second shell segment are respectively connected to the first resin tank and the second switching flow path assembly, and the second shell segment is symmetrically arranged relative to the first shell segment;

[0024] The pipe layer includes a first pipe segment and a second pipe segment vertically connected, one end of the first pipe segment is connected to the second interface, and the other end is connected to the second pipe segment, both ends of the second pipe segment are respectively connected to the first resin tank and the second switching flow path assembly, and the second pipe segment is symmetrically arranged relative to the first pipe segment.

[0025] As an optional solution of the above-mentioned soft water system, the first switching flow path component also includes a first wastewater port, the water inlet is switchably connected to the first interface or the second interface, and the second interface is switchably connected to the salt box connection port, the water outlet or the first wastewater port;

[0026] The first interface can be selectively connected to the first wastewater outlet.

[0027] As an optional solution of the above-mentioned soft water system, the first switching flow path component also includes:

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

[0029] A second pipe, one end of which is connected to the first pipe or the water inlet, and the other end of which is connected to the second interface;

[0030] a third pipe, one end of which is connected to the first interface or the first pipe, and the other end of which is connected to the first wastewater outlet;

[0031] a fourth pipe, connecting the first wastewater outlet and the second interface;

[0032] a fifth pipeline, communicating the salt box connection port and the second interface;

[0033] a sixth pipe, connecting the second interface and the water outlet;

[0034] The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline and the sixth pipeline are all provided with a first switch valve.

[0035] As an optional solution of 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 communicated with the first intermediate flow path, the fourth interface is communicated with 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 tube of the second resin tank;

[0036] The sixth interface is switchably connected to the third interface or the fourth interface;

[0037] The fifth interface can be switchably connected to the second wastewater outlet or the third interface.

[0038] As an optional solution of the above-mentioned soft water system, the second switching flow path component also includes:

[0039] a seventh pipeline, connecting the third interface and the fifth interface;

[0040] an eighth pipeline, communicating the fourth interface with the sixth interface;

[0041] a ninth pipeline, connecting the sixth interface and the seventh pipeline or connecting the sixth interface and the third interface;

[0042] a tenth pipeline, communicating the fifth interface with the second wastewater outlet;

[0043] The seventh pipeline, the eighth pipeline, the ninth pipeline and the tenth pipeline are all provided with a second switch valve.

[0044] Beneficial effects of the present invention:

[0045] In the soft water system provided by the present invention, the first resin tank and the second resin tank can be connected in parallel to prepare soft water to increase the supply flow of soft water and meet the needs of users. The first resin tank and the second resin tank can be regenerated in series, and the regeneration salt solution passes through the first resin tank and the second resin tank in sequence to regenerate the soft water resins in the first resin tank and the second resin tank in sequence. The regeneration salt solution that is not fully used in the first resin tank will enter the second resin tank for continued use, which is beneficial to improving the utilization rate of the regeneration salt solution and the regeneration effect of the soft water resin in at least the first resin tank. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0051] Figure 6 It 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 7It is a schematic diagram of the internal flow path of the second switching flow path assembly during the water production stage, water replenishment stage and forward cleaning provided by the present invention;

[0053] Figure 8 It 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] Fig. 9 is a schematic diagram of the internal flow path of the second switching flow path assembly during the regeneration stage provided by the present invention;

[0055] Fig.10 It is a schematic diagram of the internal flow path of the soft water system provided by the present invention when it is in the water replenishment stage;

[0056] Fig.11 It 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] Fig.12 It is a schematic diagram of the internal flow path of the soft water system provided by the present invention when it is in the reverse cleaning stage;

[0058] Fig.13 It 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] Fig.14 It is a schematic diagram of the internal flow path of the second switching flow path assembly during the reverse cleaning stage provided by the present invention;

[0060] Fig.15 It is a schematic diagram of the internal flow path of the soft water system provided by the present invention when it is in the forward cleaning stage;

[0061] Fig.16 It 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 figure:

[0063] 10. First resin tank; 11. Tank body; 12. Upper water distributor; 13. Central tube; 14. Lower water distributor; 20. Second resin tank; 30. First switching flow path assembly; 301. Water inlet; 302. Water outlet; 303. Salt box connection port; 304. First wastewater outlet; 305. First interface; 306. Second interface; 31. First pipeline; 32. Second pipeline; 33. Third pipeline; 34. Fourth pipeline; 35. First pipeline; 36. Second pipeline; 37. Third pipeline; 38. Fourth pipeline; 39. Third pipeline; 40. Fourth pipeline; 41. Fourth pipeline; 42. Fourth pipeline; 43. Fourth pipeline; 44. Fourth pipeline; 45. Fourth pipeline; 46. Fourth pipeline; 47. Fourth pipeline; 48. Fourth pipeline; 49. Fourth pipeline; 50. First pipeline; 51. First pipeline; 52. Second pipeline; 53. Third pipeline; 54. Fourth pipeline; 55. First pipeline; 56. First pipeline; 57. First pipeline; 58. First pipeline; 59. The fifth pipeline; 36, the sixth pipeline; 40, the second switching flow path component; 401, the third interface; 402, the fourth interface; 403, the second wastewater outlet; 404, the fifth interface; 405, the sixth interface; 41, the seventh pipeline; 42, the eighth pipeline; 43, the ninth pipeline; 44, the tenth pipeline; 50, the communicating vessel; 501, the first intermediate flow path; 502, the second intermediate flow path; 51, the shell layer; 52, the tube layer; 60, the salt box. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0065] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the 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 salt box 60, a manifold 50, a first switching flow path assembly 30 and a second switching flow path assembly 40. The first resin tank 10 and the second resin tank 20 are both used to hold soft water resin. The first switching flow path assembly 30 includes a water inlet 301, a water outlet 302 and a salt box connection port 303, the water inlet 301 is used to connect raw water, the water outlet 302 is used to supply soft water, and the salt box connection port 303 is used to communicate with the salt box 60. The salt box 60 is used to hold a regenerated salt solution. The second switching flow path assembly 40 is connected to the second resin tank 20, and the manifold 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 the flow path so that the first resin tank 10 and the second resin tank 20 are switched between the water production stage of preparing soft water in parallel and the regeneration stage of regenerating the resin in series.

[0069] When the first resin tank 10 and the second resin tank 20 are in the water production stage, the first resin tank 10 and the second resin tank 20 are connected in parallel, and the raw water is divided into two paths to prepare soft water through the first resin tank 10 and the second resin tank 20 respectively, and the prepared soft water is supplied through the water outlet 302 to increase the supply flow of soft water and meet the user's use needs. When the first resin tank 10 and the second resin tank 20 are in the regeneration stage, the first resin tank 10 and the second resin tank 20 are connected in series, and the regeneration salt solution passes through the first resin tank 10 and the second resin tank 20 in sequence to regenerate the soft water resin in the first resin tank 10 and the second resin tank 20 in sequence. 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 is conducive to improving 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 substantially the same structure, and both include a tank body 11, an upper water distributor 12, a central tube 13, and a lower water distributor 14. A tank mouth is provided at the top of the tank body 11, and water softening resin is contained in the tank body 11. The upper water distributor 12 is provided at the tank mouth, and the upper water distributor 12 is connected to the tank body 11; the central tube 13 is provided in 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 connects the tank body 11 and the central tube 13. Through the cooperation of the upper water distributor 12, the central tube 13 and the lower water distributor 14, the flow direction of the fluid in the tank body 11 can be changed. For example, the fluid can enter through the top of the central tube 13, enter the tank body 11 through the lower water distributor 14 at the bottom of the central tube 13, contact with the soft water resin in the tank body 11, and then be discharged through the upper water distributor 12; or, the fluid can enter the tank body 11 through the upper water distributor 12, contact with the soft water resin in the tank body 11, enter the central tube 13 through the lower water distributor 14, and be discharged out of the tank body 11 through the central tube 13.

[0071] In order to enable the first switching flow path assembly 30 to communicate with the first resin tank 10 and the second resin tank 20 respectively, as shown in FIG. Figure 1 and Figure 2 As shown, the first switching flow path assembly 30 also includes a first interface 305 and a second interface 306, and 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 respectively 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; the second intermediate flow path 502 is respectively connected to the second interface 306, the central tube 13 in the first resin tank 10, and the second switching flow path assembly 40. By providing 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 the fluid 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, the raw water enters the first switching flow path assembly 30 through the water inlet 301, and enters the first intermediate flow path 501 through the flow channel in the first switching flow path assembly 30. Through the first intermediate flow path 501, one path of raw water enters the first resin tank 10 through the upper water distributor 12 on the first resin tank 10, and after the raw water contacts and softens with the soft water resin, it enters the central tube 13 of the first resin tank 10 through the lower water distributor 14 of the first resin tank 10, and enters the second intermediate flow path 502 through the central tube 13 of the first resin tank 10; the other path of raw water enters the upper water distributor 12 on the second resin tank 20 through the second switching flow path assembly 40, and then enters the second resin tank 20. After the raw water contacts and softens with the soft water resin, it enters the central tube 13 of the second resin tank 20 through the lower water distributor 14 of the second resin tank 20, and enters the second intermediate flow path 502 through the central tube 13 of the second resin tank 20. The two paths of soft water enter the second intermediate flow path 502 and then converge, and then flow out from the water outlet 302 after passing through the first switching flow path assembly 30, so as to provide soft water.

[0073] Optionally, the water inlet 301 may be connected to a faucet so that soft water is prepared 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, and the produced raw water can be collected and supplied to increase the soft water supply flow rate and the single soft water production amount.

[0075] Among them, 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 respectively connected to the two first branch flow paths, 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 respectively connected to the two second branch flow paths, one of the two second branch flow paths is connected to the center 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 layer 51 and a tube layer 52 disposed in the shell layer 51, a first intermediate flow path 501 is formed between the shell layer 51 and the tube layer 52, and a second intermediate flow path 502 is formed in the tube layer 52. In order to make the raw water flow more uniform, the shell layer 51 includes a first shell segment and a second shell segment connected vertically, one end of the first shell segment is connected to the first interface 305, and the other end is connected to the second shell segment, and the two ends of the second shell segment are respectively connected to the first resin tank 10 and the second switching flow path assembly 40, and the second shell segment is symmetrically arranged relative to the first shell segment, so that the fluid in the first shell segment can be evenly diverted to the two ends of the second shell segment. Correspondingly, 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, and 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, and the second tube segment is symmetrically arranged relative to the first tube segment, so that the fluid in the first tube segment can be evenly diverted to the two ends of the second tube segment. A first main flow path is formed between the first shell section and the first pipe section, a second main flow path is formed in the first pipe section, two first branch flow paths are formed between the second shell section and the second pipe section, and two second branch flow paths are formed in the second pipe section.

[0077] When the first resin tank 10 and the second resin tank 20 are in the regeneration stage, the fluid flow path in the soft water system is as follows: Figure 3 As shown. Specifically, the salt box 60 provides a regeneration salt solution, which enters the first switching flow path component 30 through the salt box connection port 303, and enters the second intermediate flow path 502 through the flow channel in the first switching flow path component 30. At this time, the second switching flow path component 40 cuts off the connection between the tube shell and the second resin tank 20, so that the regeneration salt solution in the second intermediate flow path 502 can only flow to the first resin tank 10. The regeneration salt solution enters the tank body 11 through the central tube 13 and the lower water distributor 14 of the first resin tank 10, contacts with the soft water resin from bottom to top, and regenerates the soft water resin by absorbing 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, flows from the first intermediate flow path 501 to the second switching flow path assembly 40, and enters the central tube 13 of the second resin tank 20 after passing through the second switching flow path assembly 40, thereby being 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] The first resin tank 10 and the second resin tank 20 in the soft water system provided in this embodiment can be regenerated in series, so that the regeneration salt solution contacts the soft water resin in the first resin tank 10 and the second resin tank 20 in turn, which is beneficial to improving the utilization rate of the regeneration salt solution and the regeneration effect of the soft water resin in at least the first resin tank 10. By switching the flow path through the second switching flow path component 40, the first resin tank 10 and the second resin tank 20 can be switched between the parallel and series states to meet different working 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 water inlet 301, and the raw water enters the second intermediate flow path 502 after passing through the first switching flow path component 30, so that the raw water and the regeneration salt solution are mixed. Because the water inlet 301 is connected to the tap water, the tap water has a certain water pressure. After the tap water enters the soft water system, the pressure in the first switching flow path component 30 will be changed, so that the regeneration salt solution in the salt box 60 can automatically enter the first switching flow path component 30 under the action of the pressure difference, so that there is no need to set up an additional power source such as a water pump to drive the regeneration salt solution in the salt box 60 to flow, so as to save electric energy.

[0081] It is understandable that the soft water system has different working stages, including a forward cleaning stage, a reverse cleaning stage and a water replenishing stage in addition to the water production stage and the regeneration stage mentioned above, so as to meet the needs of cleaning the soft water resin and replenishing water into the salt box 60.

[0082] In order to enable the first switching flow path assembly 30 to meet the use requirements of different stages, the first switching flow path assembly 30 also includes a first wastewater port 304, and the water inlet 301 can be switchably connected to the first interface 305 or the second interface 306, that is, in some stages, the water inlet 301 is connected to the first interface 305, and in some stages, the water inlet 301 is connected to the second interface 306. The second interface 306 can be switchably connected to the salt box connection port 303, the water outlet 302 or the first wastewater port 304, that is, in some stages, the second interface 306 is connected to the salt box connection port 303; in some stages, the second interface 306 is connected to the water outlet 302; in some stages, the second interface 306 is connected to the first wastewater port 304. The first interface 305 can be selectively connected to the first wastewater port 304, that is, in some stages, the first interface 305 is connected to the first wastewater port 304, and in some stages, the first interface 305 is not connected to the first wastewater port 304.

[0083] like Figure 4As shown, the first switching flow path component 30 also includes a plurality of pipelines and switch valves for realizing flow path switching. Specifically, the first switching flow path component 30 includes a first pipeline 31, a second pipeline 32, a third pipeline 33, a fourth pipeline 34, a fifth pipeline 35 and a sixth pipeline 36. The first pipeline 31 connects the water inlet 301 and the first interface 305, the second pipeline 32 connects the first pipeline 31 and the second interface 306, the third pipeline 33 connects the first pipeline 31 and the first wastewater outlet 304, the fourth pipeline 34 connects the second interface 306 and the first wastewater outlet 304, the fifth pipeline 35 connects the second interface 306 and the salt box connection port 303, the sixth pipeline 36 connects the second interface 306 and the water outlet 302, and the first pipeline 31, the second pipeline 32, the third pipeline 33, the fourth pipeline 34, the fifth pipeline 35 and the sixth pipeline 36 are all provided with switch valves.

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

[0085] In some embodiments, the second pipe 32 can be directly connected to the water inlet 301, and the third pipe 33 can be directly connected to the first interface 305, and does not need to be arranged on the first pipe 31, which can also meet the flow path requirements of different stages.

[0086] like Figure 5As shown, in order to enable the second switching flow path assembly 40 to meet the use requirements of different stages, the second switching flow path assembly 40 includes a plurality of pipelines and switch valves. Specifically, the second switching flow path assembly 40 includes a third interface 401, a fourth interface 402, a second wastewater port 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 tube 13 of the second resin tank 20. Among them, the fifth interface 404 can be switched to communicate with the second wastewater port 403 or the third interface 401, that is, in some stages, the fifth interface 404 is connected to the second wastewater port 403; in some stages, the fifth interface 404 is connected to the third interface 401. The sixth interface 405 is switchably 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 above switching, the second switching flow path assembly 40 further includes a seventh pipeline 41, an eighth pipeline 42, a ninth pipeline 43 and a tenth pipeline 44. The seventh pipeline 41 connects the third interface 401 and the fifth interface 404, the eighth pipeline 42 connects the fourth interface 402 and the sixth interface 405, the ninth pipeline 43 connects the sixth interface 405 and the seventh pipeline 41, and the tenth pipeline 44 connects the fifth interface 404 and the second wastewater outlet 403. The seventh pipeline 41, the eighth pipeline 42, the ninth pipeline 43 and the tenth pipeline 44 are all provided with switch valves.

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

[0089] In some embodiments, the ninth pipeline 43 can directly connect the third interface 401 and the sixth interface 405. Similarly, when the switch valve on the seventh pipeline 41 is in a closed state, the ninth pipeline 43 can be ensured to connect 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 in the first switching flow path assembly 30 is as follows: Figure 6 As shown, combined Figure 2As shown, the first pipe 31 is in a connected state so that the water inlet 301 is connected to the first interface 305, and the sixth pipe 36 is in a connected state so that the water outlet 302 is connected to the second interface 306. The raw water provided by the water inlet 301 enters the first intermediate flow path 501 of the communicating vessel 50 through the first pipe 31, thereby being divided. Among them, one path of raw water enters the first resin tank 10 through the upper water distributor 12 of the first resin tank 10, and after contacting with the soft water resin, the prepared soft water 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 communicating vessel 50 in sequence, and then enters the sixth pipe 36 through the second interface 306, so that the soft water is supplied through the water outlet 302.

[0091] like 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. Figure 6 and Figure 7 As shown, another path of raw water diverted through 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 to enter the second resin tank 20, and the soft water prepared after contacting with the soft water resin passes 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 communicating vessel 50 in sequence, and then enters the sixth pipe 36 through the second interface 306, thereby supplying soft water through the water 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, so that the water inlet 301 is connected to the second interface 306, and the salt box connection port 303 is connected to the second interface 306. Tap water enters the second pipe 32 through the water inlet 301, so that the air pressure in the fifth pipe 35 and the air pressure in the salt box 60 form an air pressure difference. Under the action of the air pressure difference, the salt box 60 provides a regeneration salt solution, and the regeneration salt solution 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 component 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, and the regenerated salt solution sequentially passes through the central tube 13 and the lower water distributor 14 of the first resin tank 10 and contacts 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 enters the second resin tank 20 from the first intermediate flow path 501 through the second switching flow path component 40 to regenerate the soft water resin in the second resin tank 20.

[0093] like Fig. 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, so that the third interface 401 is connected with the sixth interface 405, so as to connect the first intermediate flow path and the central pipe 13 of the second resin tank 20; the tenth pipe 44 is connected, so that the fifth interface 404 is connected with the second wastewater outlet 403, so as to connect the upper water 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 contacts the soft water resin in the second resin tank 20, it passes through the upper water 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 Fig.10 and Fig.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 water inlet 301 and the first interface 305; the fifth pipe 35 is connected to connect the salt tank 60 communication port and the second interface 306. The raw water supplied from the water inlet 301 enters the first intermediate flow path 501 of the communicating vessel 50 through the first pipe 31, thereby being split. Among them, one path of raw water enters the first resin tank 10 through the upper water distributor 12 of the first resin tank 10, and then the water flows 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 communicating vessel 50 in sequence, and then enters the fifth pipe 35 through the second interface 306, thereby replenishing water to the salt tank 60.

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

[0096] When the soft water system is in the water replenishment stage, 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 through 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 to enter the second resin tank 20, and 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 communicating vessel 50 in sequence, and then enters the fifth pipe 35 through the second interface 306, so as to replenish water into the salt tank 60 through the salt tank 60 connecting port.

[0097] like Fig.12and Fig.13 As shown, when the soft water system is in the reverse cleaning stage, the second pipe 32 and the third pipe 33 are in a connected state. The raw water supplied by the water inlet 301 enters the second intermediate flow path 502 of the communicating vessel 50 through the second pipe 32, thereby being divided. Among them, one path of raw water enters the first resin tank 10 through the central pipe 13 and the lower water distributor 14 of the first resin tank 10, and after flushing the soft water resin, the water flows through the upper water distributor 12 of the first resin tank 10 and the first intermediate flow path 501 of the communicating vessel 50 in sequence, and then enters the third pipe 33 through the first interface 305, and is discharged from the first wastewater outlet 304.

[0098] like Fig.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 the lower water distributor 14 of the second resin tank 20 in sequence to enter the second resin tank 20. After flushing the soft water resin, the water flows through the upper water distributor 12 of the second resin tank 20, the seventh pipe 41, and the first intermediate flow path 501 of the communicating vessel 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 Fig.15 and Fig.16 As shown, when the soft water system is in the forward cleaning stage, the first pipe 31 and the fourth pipe 34 are in a connected state. The raw water supplied by the water inlet 301 enters the first intermediate flow path 501 of the communicating vessel 50 through the first pipe 31, thereby being divided. Among them, one path of raw water enters the first resin tank 10 through the upper water distributor 12 of the first resin tank 10, and after flushing the soft water resin, the water flows 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 communicating vessel 50 in sequence, and then enters the fourth pipe 34 through the second interface, and is 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 through 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 to enter the second resin tank 20. After flushing 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 communicating vessel 50 in sequence, 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 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 in each stage mentioned above 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 embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A soft water system, characterized in that: include: A first resin tank (10) and a second resin tank (20); A first switching flow path component (30) comprises a water inlet (301), a water outlet (302) and a salt box connection port (303); A salt box (60) connected to the salt box connection port (303); A second switching flow path assembly (40) connected to the second resin tank (20); a communicating vessel (50), wherein the communicating vessel (50) connects the first switching flow path component (30), the first resin tank (10), and the second switching flow path component (40); The first switching flow path assembly (30) and the second switching flow path assembly (40) can switch the flow paths so that the first resin tank (10) and the second resin tank (20) are switched between a water production stage for preparing soft water in parallel and a regeneration stage for regenerating the resin in series.

2. The soft water system according to claim 1, characterized in that: The first resin tank (10) and the second resin tank (20) both include: A tank body (11), wherein a tank mouth is arranged on the top of the tank body (11); An upper water distributor (12) is arranged at the tank mouth, and the upper water distributor (12) is in communication with 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); A lower water distributor (14), wherein the lower water distributor (14) is connected to the tank body (11) and the central pipe (13).

3. The soft water system according to claim 2, characterized in that: The first switching flow path assembly (30) further comprises a first interface (305) and a second interface (306), the communicating vessel (50) comprises a first intermediate flow path (501) and a second intermediate flow path (502), the first intermediate flow path (501) respectively communicating with the first interface (305), the upper water distributor (12) in the first resin tank (10), and the second switching flow path assembly (40); The second intermediate flow path (502) is respectively connected to the second interface (306), the central tube (13) in the first resin tank (10), and the second switching flow path assembly (40).

4. The soft water system according to claim 3, characterized in that: The first intermediate flow path (501) comprises 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 respectively connected to the two first branch flow paths, 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 respectively connected to the two second branch flow paths, 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).

5. The soft water system according to claim 3, characterized in that: The communicating vessel (50) comprises a shell layer (51) and a tube layer (52) arranged in the shell layer (51), a first intermediate flow path (501) is formed between the shell layer (51) and the tube layer (52), and a second intermediate flow path (502) is formed in the tube layer (52).

6. The soft water system according to claim 5, characterized in that: The shell layer (51) comprises a first shell segment and a second shell segment which are vertically connected, one end of the first shell segment is connected to the first interface (305), and the other end is connected to the second shell segment, both ends of the second shell segment are respectively connected to the first resin tank (10) and the second switching flow path component (40), and the second shell segment is symmetrically arranged relative to the first shell segment; The tube layer (52) comprises a first tube segment and a second tube segment which are vertically connected, one end of the first tube segment being connected to the second interface (306), and the other end being connected to the second tube segment, both ends of the second tube segment being respectively connected to the first resin tank (10) and the second switching flow path assembly (40), and the second tube segment being symmetrically arranged relative to the first tube segment.

7. The soft water system according to any one of claims 3 to 6, characterized in that: The first switchable flow path assembly (30) further comprises a first wastewater outlet (304), the water 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 box connection port (303), the water outlet (302) or the first wastewater outlet (304); The first interface (305) can be selectively connected to the first wastewater outlet (304).

8. The soft water system according to claim 7, characterized in that: The first switching flow path component (30) further includes: A first pipe (31) connecting the water inlet (301) and the first interface (305); a second pipe (32), one end of which is connected to the first pipe (31) or the water inlet (301), and the other end of which is connected to the second interface (306); a third pipe (33), one end of which is connected to the first interface (305) or the first pipe (31), and the other end of which is connected to the first wastewater outlet (304); a fourth pipe (34), communicating the first wastewater outlet (304) and the second interface (306); a fifth pipeline (35), communicating the salt box connection port (303) and the second interface (306); a sixth pipe (36), communicating the second interface (306) and the water outlet (302); The first pipeline (31), the second pipeline (32), the third pipeline (33), the fourth pipeline (34), the fifth pipeline (35) and the sixth pipeline (36) are all provided with a first switch valve.

9. The soft water system according to any one of claims 3 to 6, characterized in that: The second switching flow path assembly (40) comprises 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) being in communication with the first intermediate flow path (501), the fourth interface (402) being in communication with the second intermediate flow path (502), the fifth interface (404) being connected to the upper water distributor (12) of the second resin tank (20), and the fifth interface (404) being connected to the central tube (13) of the second resin tank (20); The sixth interface (405) is switchably connected to the third interface (401) or the fourth interface (402); The fifth interface (404) can be switchably connected to the second wastewater outlet (403) or the third interface (401).

10. The soft water system according to claim 9, characterized in that: The second switching flow path component (40) further includes: a seventh pipeline (41), communicating the third interface (401) and the fifth interface (404); an eighth pipeline (42), communicating the fourth interface (402) and the sixth interface (405); a ninth pipeline (43), connecting the sixth interface (405) and the seventh pipeline (41) or connecting the sixth interface (405) and the third interface (401); a tenth pipeline (44), communicating with the fifth interface (404) and the second wastewater outlet (403); The seventh pipeline (41), the eighth pipeline (42), the ninth pipeline (43) and the tenth pipeline (44) are all provided with a second switch valve.

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