Water softening device

Abstract

The utility model discloses a water softening device, which belongs to the technical field of water softening and comprises a resin tank and a water distribution component, the resin tank is provided with a resin cavity, and the resin cavity is used for accommodating a resin layer; the water distribution assembly is arranged in the resin cavity and comprises a softened water pipe, a regenerated water pipe and a lower water distributor, the lower water distributor is provided with a softened cavity and a regenerated cavity, the bottom end of the softened water pipe is communicated with the softened cavity, the softened cavity is communicated with the resin cavity through a plurality of softened water holes, and the bottom end of the regenerated water pipe is communicated with the regenerated cavity; the regeneration cavity is communicated with the resin cavity through a plurality of regeneration water holes, and the regeneration water holes can distribute water into the resin layer in the radial direction of the lower water distributor. Water is distributed into the resin layer along the radial direction of the lower water distributor by virtue of the regenerated water holes, so that saline water is uniformly distributed in the resin layer and is fully contacted with the resin layer, and the regeneration quality and the saline water utilization rate are improved.

Description

Technical Field

[0001] This utility model relates to the field of water softening technology, and in particular to a water softening device. Background Technology

[0002] With the improvement of people's living standards, water softening equipment has been widely used. Water softening equipment contains softening resin, which uses its own cations to adsorb calcium and magnesium ions in the water, thereby softening the water. After a period of operation, the calcium and magnesium ions adsorbed by the softening resin become saturated, causing the water softening function to deteriorate or even be lost. To ensure that the water softening equipment can continuously soften the water, the softening resin needs to be regenerated regularly.

[0003] Water softening equipment typically includes water valves, a resin tank, and a water distribution assembly. The water distribution assembly is housed within the resin tank, with a resin layer filling the space between the tank and the assembly. The water distribution assembly typically includes a central pipe, an upper distributor, and a lower distributor, with the resin layer located around the outer periphery of the central pipe.

[0004] Currently, water softening equipment commonly uses high-concentration salt solutions to regenerate the resin. The softening and regeneration channels share a single lower distributor. Softened water enters the lower distributor and flows out through a central pipe, while the regeneration brine flows from the central pipe into the lower distributor and distributes to the resin layer. To ensure sufficient softening flow, the flow area of ​​the inlet on the lower distributor is usually increased. However, this increased flow area means that during resin regeneration, the relatively small flow of brine lacks sufficient force to disperse into the resin layer, resulting in insufficient contact between the brine and the resin layer, and thus incomplete resin regeneration. Utility Model Content

[0005] The purpose of this invention is to provide a water softening device to solve the technical problem in the prior art where the brine with a small flow rate does not have enough power to disperse into the resin layer, resulting in insufficient contact between the brine and the resin layer and incomplete resin regeneration.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A water softening device, comprising:

[0008] A resin tank having a resin cavity for accommodating a resin layer;

[0009] A water distribution assembly is disposed within the resin cavity. The water distribution assembly includes a softened water pipe, a regenerated water pipe, and a lower water distributor. The lower water distributor has a softening cavity and a regeneration cavity. The bottom end of the softened water pipe communicates with the softening cavity, and the softening cavity communicates with the resin cavity through multiple softened water holes. The bottom end of the regenerated water pipe communicates with the regeneration cavity, and the regeneration cavity communicates with the resin cavity through multiple regeneration water holes. The regeneration water holes can distribute water into the resin layer radially along the lower water distributor.

[0010] Preferably, the flow area of ​​at least a portion of the regenerated water holes gradually decreases along the direction from the inside to the outside of the regeneration cavity; and / or, the flow area of ​​the softened water holes gradually decreases along the direction from the inside to the outside of the softening cavity.

[0011] Preferably, the softened water holes are elongated along the axial direction of the lower water distributor; and / or, the regenerated water holes are elongated along the radial direction of the lower water distributor.

[0012] Preferably, the lower water distributor includes a first water distribution section and a second water distribution section. The first water distribution section is provided with the softening chamber, and the second water distribution section is provided with the regeneration chamber. The first water distribution section and the second water distribution section can be detachably connected or fixed as an integral structure.

[0013] Preferably, the first water distribution section includes a first base plate and a first side plate, the first side plate being arranged circumferentially around the first base plate to form the softening cavity with the first base plate, and the second water distribution section includes a second base plate and a second side plate, the second side plate being arranged circumferentially around the second base plate to form the regeneration cavity with the second base plate, and the second side plate being connected to the first base plate.

[0014] Preferably, the first water distribution section further includes a top cover, which is disposed on the top of the first side plate and connected to the softened water pipe.

[0015] Preferably, the regenerated water pipe is inserted inside the softened water pipe, and the softening cavity is located at the top of the regeneration cavity.

[0016] Preferably, the softening cavity is provided with a first mounting part, and the first mounting part has a first water passage that communicates with the regeneration cavity. The bottom end of the regeneration water pipe is connected to the first mounting part, and the regeneration water pipe communicates with the first water passage.

[0017] Preferably, a plurality of the regenerated water holes are arranged circumferentially around the lower water distributor to form a group of water distribution holes, and at least two groups of water distribution holes are arranged axially on the outer peripheral surface of the lower water distributor.

[0018] Preferably, the system also includes a water valve located at the top of the resin tank. The water valve has a softening channel, a regeneration channel, and an outlet channel. The regeneration channel is connected to the regenerated water pipe, and the outlet channel is connected to the softened water pipe.

[0019] The beneficial effects of this utility model are:

[0020] The water softening device proposed in this invention allows water softened by the resin layer to enter the softening chamber through the softening water holes of the lower water distributor and flow out through the softening water pipe during softening. During regeneration, the regeneration brine flows into the regeneration chamber of the lower water distributor through the regeneration water pipe and is distributed radially into the resin layer through the regeneration water holes. By setting up softening and regeneration water pipes, and correspondingly setting up softening and regeneration chambers on the lower water distributor, the softening and regeneration channels are separated, facilitating the adjustment of brine flow rate or velocity as needed. The brine is distributed radially into the resin layer through the regeneration water holes, ensuring uniform distribution within the resin layer, guaranteeing sufficient contact between the brine and the resin layer, and improving regeneration quality and brine utilization rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the water softening device provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the water softening device provided in this embodiment of the present invention, omitting the outer shell;

[0023] Figure 3 This is a schematic diagram of the structure of the resin tank and water valve provided in this embodiment of the utility model;

[0024] Figure 4 This is a first sectional view of a portion of the structure of the water softening device provided in this embodiment of the present invention;

[0025] Figure 5 This is a second sectional view of a portion of the structure of the water softening device provided in this embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the water distribution assembly provided in an embodiment of the present invention;

[0027] Figure 7 This is a first cross-sectional view of a portion of the structure of the water distribution assembly provided in this embodiment of the utility model;

[0028] Figure 8 yes Figure 7 Enlarged view of point A;

[0029] Figure 9 This is a first structural schematic diagram of the water distributor provided in this embodiment of the utility model;

[0030] Figure 10 This is a schematic diagram of the second structure of the water distributor provided in this embodiment of the utility model;

[0031] Figure 11 This is a second sectional view of a portion of the structure of the water distribution assembly provided in this embodiment of the utility model;

[0032] Figure 12 This is a schematic diagram of the structure of the water distributor provided in this embodiment of the utility model;

[0033] Figure 13 This is a schematic diagram of the structure of the water distributor provided in this embodiment of the utility model;

[0034] Figure 14 This is a schematic diagram of the upper distribution structure provided in an embodiment of the present utility model;

[0035] Figure 15 This is a schematic diagram of the structure of the water valve provided in this embodiment of the utility model;

[0036] Figure 16 This is a bottom view of the water valve provided in this embodiment of the utility model;

[0037] Figure 17 yes Figure 16 BB-direction sectional view.

[0038] In the picture:

[0039] 10. Resin tank; 11. Resin chamber;

[0040] 20. Water distribution components; 21. Softened water pipes; 22. Reclaimed water pipes;

[0041] 23. Lower water distributor; 231. Softening chamber; 232. Regeneration chamber; 233. Softened water hole; 234. Regeneration water hole; 235. First water distribution section; 2351. First base plate; 2352. First side plate; 2353. Top cover; 2354. Mounting hole; 236. Second water distribution section; 2361. Second base plate; 2362. Second side plate; 237. First mounting section;

[0042] 24. Upper water distributor; 241. Upper distribution unit; 2411. Water passage hole; 2412. First inner wall panel; 2413. First outer wall panel; 2414. First slot; 242. Water distributor; 2421. Water distribution hole; 2422. First protrusion;

[0043] 30. Water circuit valve; 301. Softening channel; 302. Regeneration channel; 303. Outlet channel; 304. Inlet; 305. Outlet; 306. Brine suction port; 307. Sewage discharge port;

[0044] 31. Valve chamber; 32. Water circuit switching assembly; 321. Grille assembly; 322. Piston assembly; 33. Main valve body; 34. Lower valve body;

[0045] 40. Ejector; 50. Salt tank; 60. Salt suction valve; 70. Outer casing. Detailed Implementation

[0046] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0047] In the description of this utility model, 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 utility model based on the specific circumstances.

[0048] 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.

[0049] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] See Figures 1 to 17This embodiment provides a water softening device, including a resin tank 10 and a water distribution assembly 20. The resin tank 10 has a resin cavity 11 for accommodating a resin layer. The water distribution assembly 20 is disposed in the resin cavity 11 and includes a softening water pipe 21, a regenerated water pipe 22, and a lower water distributor 23. The lower water distributor 23 has a softening cavity 231 and a regeneration cavity 232. The bottom end of the softening water pipe 21 is connected to the softening cavity 231. The softening cavity 231 is connected to the resin cavity 11 through multiple softening water holes 233. The bottom end of the regenerated water pipe 22 is connected to the regeneration cavity 232. The regeneration cavity 232 is connected to the resin cavity 11 through multiple regeneration water holes 234. The regeneration water holes 234 can distribute water into the resin layer along the radial direction of the lower water distributor 23.

[0051] During softening, the water softened by the resin layer enters the softening chamber 231 through the softening water hole 233 of the lower water distributor 23 and flows out through the softening water pipe 21. During regeneration, the brine for regeneration flows into the regeneration chamber 232 of the lower water distributor 23 through the regeneration water pipe 22 and is distributed radially into the resin layer through the regeneration water hole 234. By setting the softening water pipe 21 and the regeneration water pipe 22, and correspondingly setting the softening chamber 231 and the regeneration chamber 232 on the lower water distributor 23, the softening flow channel and the regeneration flow channel are set separately, which makes it easy to adjust the brine flow rate or velocity according to the needs. With the help of the regeneration water hole 234, the brine is distributed radially into the resin layer through the lower water distributor 23, so that the brine is evenly distributed in the resin layer, ensuring full contact between the brine and the resin layer, improving the regeneration quality and brine utilization rate. Figure 4 A schematic diagram of the water flow during softening is shown. Figure 5 A schematic diagram of the water flow during regeneration is shown.

[0052] Multiple regenerated water holes 234 are circumferentially spaced around the lower water distributor 23. The shape and number of the regenerated water holes 234 can be set according to actual needs. Preferably, the cross-sectional area of ​​the regenerated water holes 234 is small, so that the water flow has a higher pressure and a higher flow velocity when flowing through the regenerated water holes 234, and the water flow is sprayed into the resin layer to achieve full contact with the resin layer. In this embodiment, the regenerated water holes 234 are arranged in an elongated shape along the radial direction of the lower water distributor 23, specifically, the regenerated water holes 234 are elongated in the radial direction of the lower water distributor 23. The size of the regenerated water holes 234 is set to allow water flow through and to a certain extent block the resin particles in the resin layer, preventing the resin particles from entering the lower water distributor 23. Exemplarily, the diameter of the outermost port of the regenerated water hole 234 is smaller than the particle size of the resin particles.

[0053] In some embodiments, along the direction from the inside to the outside of the regeneration chamber 232, the flow area of ​​at least some of the regeneration water holes 234 gradually decreases. This results in higher pressure and a higher flow velocity when the water flows through the regeneration water holes 234, allowing the water to be sprayed into the resin layer and achieve sufficient contact with the resin layer. Exemplarily, the regeneration water holes 234 are conical. Exemplarily, the regeneration water holes 234 are elongated, and along the extension direction from the inside to the outside of the regeneration water holes 234, the flow area of ​​some of the regeneration water holes 234 gradually decreases.

[0054] The regenerated water holes 234 can be arranged in one circle around the circumference of the lower water distributor 23, or multiple circles can be arranged. For example, multiple regenerated water holes 234 are arranged at intervals around the circumference of the lower water distributor 23 to form a group of water distribution holes, and at least two groups of water distribution holes are arranged at intervals along the axial direction on the outer circumferential surface of the lower water distributor 23.

[0055] Multiple softening water holes 233 are arranged circumferentially around the lower water distributor 23, and the shape and number of softening water holes 233 can be set according to actual needs. In some embodiments, the softening water holes 233 are arranged in an elongated shape along the axial direction of the lower water distributor 23, with a larger water distribution area, thereby increasing the flow rate of the water to be softened. In some embodiments, the flow area of ​​the softening water holes 233 gradually decreases from the inside to the outside along the softening cavity 231, allowing water to flow through while providing a certain degree of obstruction to the resin particles in the resin layer, preventing resin particles from entering the lower water distributor 23. Specifically, the width of the outermost port of the softening water hole 233 is smaller than the particle size of the resin particles.

[0056] The shape of the lower water distributor 23 can be set according to actual needs, and it is usually a rotating body, which facilitates manufacturing and avoids dead corners. For example, the lower water distributor 23 includes a first water distribution section 235 and a second water distribution section 236. The first water distribution section 235 is provided with a softening chamber 231, and the second water distribution section 236 is provided with a regeneration chamber 232. The first water distribution section 235 and the second water distribution section 236 can be detachably connected or fixed as a single unit. Detachable connection facilitates assembly and replacement. Fixed as a single unit can be manufactured as a single piece or manufactured separately and then welded together, reducing the number of parts and eliminating the need to consider sealing issues.

[0057] Specifically, the first water distribution section 235 includes a first base plate 2351 and a first side plate 2352. The first side plate 2352 is arranged circumferentially around the first base plate 2351 to form a softening cavity 231. The second water distribution section 236 includes a second base plate 2361 and a second side plate 2362. The second side plate 2362 is arranged circumferentially around the second base plate 2361 to form a regeneration cavity 232. The second side plate 2362 is connected to the first base plate 2351. The first side plate 2352 has softened water holes 233, and the second side plate 2362 has regeneration water holes 234.

[0058] In this embodiment, the first water distribution section 235 and the second water distribution section 236 are welded together as a single structure. The second side plate 2362 and the first base plate 2351 are welded together as a single structure. In other embodiments of this embodiment, the first water distribution section 235 and the second water distribution section 236 are detachably connected. The second side plate 2362 and the first base plate 2351 can be threaded together, and a sealing ring can be sandwiched between them.

[0059] The first water distribution section 235 also includes a top cover 2353, which is disposed on the top of the first side plate 2352 and connected to the softened water pipe 21. The top cover 2353 covers the softening cavity 231 and has a mounting hole 2354 communicating with the softening cavity 231, into which the softened water pipe 21 is inserted. A grid structure is provided in the mounting hole 2354, and the softened water pipe 21 abuts against the grid structure, which limits the position of the softened water pipe 21.

[0060] In this embodiment, the regenerated water pipe 22 is inserted inside the softened water pipe 21, which is a reasonable layout and saves space. The softening chamber 231 is located above the regeneration chamber 232, and the brine flowing out of the regeneration chamber 232 can fully contact the resin layer at the bottom, avoiding the existence of regeneration blind spots. In other embodiments, the regenerated water pipe 22 can be located outside the softened water pipe 21.

[0061] The softening chamber 231 has a first mounting part 237 inside, and the first mounting part 237 has a first water passage that communicates with the regeneration chamber 232. The bottom end of the regeneration water pipe 22 is connected to the first mounting part 237, and the regeneration water pipe 22 communicates with the first water passage. By setting the first mounting part 237, the regeneration water pipe 22 can be inserted into the softening chamber 231 and connected to the first mounting part 237. Specifically, the first mounting part 237 is set on the first base plate 2351, and the regeneration water pipe 22 is inserted into the first water passage.

[0062] The water softening device also includes an upper water distributor 24, which is fitted onto the upper part of the softened water pipe 21. The upper water distributor 24 includes an upper collector 241, which has a water collection chamber and multiple water passage holes 2411 communicating with the water collection chamber. The multiple water passage holes 2411 guide the water in the water collection chamber to flow outward, so as to distribute the water evenly.

[0063] Specifically, the upper distribution unit 241 includes a first inner wall panel 2412 and a first outer wall panel 2413, which together form a water collection cavity. The first outer wall panel 2413 has water passage holes 2411. Water flowing down from above enters the water collection cavity between the first inner wall panel 2412 and the first outer wall panel 2413, and then flows out through the multiple water passage holes 2411. A sealing ring can be installed between the first inner wall panel 2412 and the softened water pipe 21.

[0064] The water passage holes 2411 extend in an elongated shape along the axial direction of the first outer wall plate 2413, and multiple water passage holes 2411 are spaced apart circumferentially around the first outer wall plate 2413. In this embodiment, the first outer wall plate 2413 is inverted conical in shape, and the first inner wall plate 2412 is arranged in a ring around the softened water pipe 21. The shapes of the first outer wall plate 2413 and the first inner wall plate 2412 are such that the top of the water collection chamber is open outward, facilitating the entry of water flowing down from above into the water collection chamber.

[0065] The upper water distributor 24 also includes a water divider 242, which is located at the top of the upper distribution 241. The water divider 242 has a water dividing hole 2421, which is connected to the water collection chamber. Water flowing down from above enters the water collection chamber through the water dividing hole 2421 and then flows out through multiple water passage holes 2411.

[0066] The upper distribution unit 241 is detachably connected to the water distributor 242, facilitating installation, disassembly, or replacement. For example, the upper distribution unit 241 and the water distributor 242 are snap-fitted or threaded together for easy installation and disassembly.

[0067] Exemplarily, the upper distributor 241 can be detached from the distributor 242 by rotating it relative to the distributor 242. The upper end of the upper distributor 241 is inserted into a mounting cavity on the outer periphery of the distributor 242. The inner wall of the mounting cavity is provided with a plurality of first locking protrusions 2422, and the outer wall of the upper distributor 241 is provided with a plurality of first locking slots 2414. During installation, the upper end of the upper distributor 241 is inserted into the mounting cavity of the distributor 242, such that the first locking slots 2414 are located on one side of the first locking protrusions 2422. By rotating the upper distributor 241, the first locking protrusions 2422 are inserted into the first locking slots 2414. During disassembly, by rotating the upper distributor 241, the first locking protrusions 2422 are disengaged from the first locking slots 2414, and the upper distributor 241 can be removed from the lower end of the distributor 242.

[0068] The resin tank 10 is typically cylindrical, but other shapes can be used as needed. The water softening device also includes a water valve 30, located at the top of the resin tank 10. The water valve 30 has a softening channel 301, a regeneration channel 302, and an outlet channel 303. The regeneration channel 302 connects to the regeneration water pipe 22, and the outlet channel 303 connects to the softening water pipe 21. During softening, the softening channel 301 introduces the water to be softened. The water flows from top to bottom through the upper distributor 24 into the resin layer, then through the softening chamber 231 on the lower distributor 23 into the softening water pipe 21, and finally out through the outlet channel 303. During regeneration, the regeneration channel 302 introduces brine into the regeneration water pipe 22, which then flows through the regeneration chamber 232 on the lower distributor 23 into the resin layer.

[0069] Specifically, the water valve 30 includes a valve chamber 31 and a water circuit switching component 32 disposed within the valve chamber 31. The water circuit switching component 32 is used to selectively open either the softening channel 301 or the regeneration channel 302. When the softening channel 301 is open, the regeneration channel 302 is closed; when the regeneration channel 302 is open, the softening channel 301 is closed. When the softening channel 301 is open, the water to be softened can enter the resin chamber 11 through the softening channel 301; when the regeneration channel 302 is open, the brine can enter the regenerated water pipe 22 through the regeneration channel 302.

[0070] Specifically, the water valve 30 has an inlet 304, an outlet 305, a brine suction port 306, and a sewage discharge port 307. When the softening channel 301 is connected to the inlet 304, the outlet channel 303 is connected to the outlet 305. When the regeneration channel 302 is connected to the brine suction port 306, the softening channel 301 is connected to the sewage discharge port 307. During softening, the inlet 304 is connected to the softening channel 301, and the outlet channel 303 is connected to the outlet 305. The water to be softened entering through the inlet 304 enters the resin chamber 11 through the softening channel 301. The water flows from top to bottom through the upper distributor 24 into the resin layer, passes through the softening chamber 231 on the lower distributor 23, enters the softening water pipe 21, and flows out from the outlet 305 through the outlet channel 303. During regeneration, the brine sucked in by the brine inlet 306 enters the regeneration water pipe 22 through the regeneration channel 302, passes through the regeneration chamber 232 on the lower distributor 23, and enters the resin layer. The brine used for regeneration passes from bottom to top through the resin layer and is discharged from the softening channel 301 through the drain outlet 307.

[0071] The water circuit switching assembly 32 includes a grille assembly 321 and a piston assembly 322. The exterior of the grille assembly 321 forms a sealed connection with the valve chamber 31, and the piston assembly 322 is movably disposed within the grille assembly 321 and can form a sealed connection with the interior of the grille assembly 321. The water circuit switching assembly 32 also includes a drive assembly, which drives the piston assembly 322 to move in coordination with the grille assembly 321 to form different passages and achieve different working states. The drive assembly can be an existing cylinder, hydraulic cylinder, linear motor, etc.

[0072] In this embodiment, the piston assembly 322 can move between a first position and a second position. When the piston assembly 322 is in the first position, the softening channel 301 is connected to the inlet 304 and the outlet channel 303 is connected to the outlet 305. When the piston assembly 322 is in the second position, the regeneration channel 302 is connected to the brine inlet 306 and the softening channel 301 is connected to the sewage outlet 307.

[0073] In this embodiment, the water valve 30 is a split structure. Specifically, the water valve 30 includes a main valve body 33 and a lower valve body 34. The main valve body 33 and the lower valve body 34 are detachably connected and interlock to form a softening channel 301, a regeneration channel 302, and a water outlet channel 303. The lower valve body 34 is connected to the resin tank 10, specifically by a threaded connection. The upper water distributor 24 can be connected to the lower valve body 34, specifically by screw locking.

[0074] In some embodiments, the flow area of ​​at least a portion of the regeneration channel 302 is smaller than the flow area of ​​the softening channel 301. The smaller flow area of ​​the regeneration channel 302 allows the lower flow rate of brine to fully contact the resin layer, improving regeneration quality and brine utilization. The larger flow area of ​​the softening channel 301 allows the water to be softened to flow quickly through the resin layer, ensuring water softening efficiency.

[0075] The water softening device also includes an ejector 40, which is connected to the water valve 30 and located at the brine inlet 306. The ejector 40 can adopt an existing structure, and its principle will not be described in detail here. The number of ejectors 40 can be set according to actual needs. For example, ejectors 40 can also be installed at the drain outlet 307 and the water outlet 305.

[0076] The softening device provided in this embodiment can be a water softener or used as part of a water purifier. The softening device also includes a brine tank 50 and a brine suction valve 60. The brine suction valve 60 is connected to the brine suction port 306, and the brine tank 50 is connected to the brine suction valve 60. The brine tank 50 and the brine suction valve 60 can adopt existing structures. The softening device also includes a housing 70, within which the resin tank 10, water valve 30, brine tank 50, and brine suction valve 60 are all located.

[0077] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water softening device, characterized in that, include: A resin tank (10) having a resin cavity (11) for accommodating a resin layer; A water distribution assembly (20) is disposed within the resin chamber (11). The water distribution assembly (20) includes a softened water pipe (21), a regenerated water pipe (22), and a lower water distributor (23). The lower water distributor (23) has a softening chamber (231) and a regeneration chamber (232). The bottom end of the softened water pipe (21) is connected to the softening chamber (231). The softening chamber (231) is connected to the resin chamber (11) through multiple softened water holes (233). The bottom end of the regenerated water pipe (22) is connected to the regeneration chamber (232). The regeneration chamber (232) is connected to the resin chamber (11) through multiple regeneration water holes (234). The regeneration water holes (234) can distribute water into the resin layer along the radial direction of the lower water distributor (23).

2. The water softening device according to claim 1, characterized in that, Along the regeneration chamber (232) from the inside out, the flow area of ​​at least a portion of the regeneration water holes (234) gradually decreases; and / or, along the softening chamber (231) from the inside out, the flow area of ​​the softening water holes (233) gradually decreases.

3. The water softening device according to claim 1, characterized in that, The softened water hole (233) is elongated along the axial direction of the lower water distributor (23); and / or, the regenerated water hole (234) is elongated along the radial direction of the lower water distributor (23).

4. The water softening device according to claim 1, characterized in that, The lower water distributor (23) includes a first water distribution section (235) and a second water distribution section (236). The first water distribution section (235) is provided with the softening cavity (231), and the second water distribution section (236) is provided with the regeneration cavity (232). The first water distribution section (235) and the second water distribution section (236) are detachably connected or fixed as an integral structure.

5. The water softening device according to claim 4, characterized in that, The first water distribution section (235) includes a first base plate (2351) and a first side plate (2352). The first side plate (2352) is arranged around the first base plate (2351) to form the softening cavity (231) together with the first base plate (2351). The second water distribution section (236) includes a second base plate (2361) and a second side plate (2362). The second side plate (2362) is arranged around the second base plate (2361) to form the regeneration cavity (232) together with the second base plate (2361). The second side plate (2362) is connected to the first base plate (2351).

6. The water softening device according to claim 5, characterized in that, The first water distribution section (235) also includes a top cover (2353), which is disposed on the top of the first side plate (2352) and connected to the softened water pipe (21).

7. The water softening device according to claim 1, characterized in that, The regenerated water pipe (22) is installed inside the softened water pipe (21), and the softening cavity (231) is located above the regeneration cavity (232).

8. The water softening device according to claim 7, characterized in that, The softening cavity (231) is provided with a first mounting part (237), and the first mounting part (237) is provided with a first water passage that communicates with the regeneration cavity (232). The bottom end of the regeneration water pipe (22) is connected to the first mounting part (237), and the regeneration water pipe (22) communicates with the first water passage.

9. The water softening device according to claim 1, characterized in that, Multiple regenerated water holes (234) are arranged circumferentially around the lower water distributor (23) to form a group of water distribution holes. At least two groups of water distribution holes are arranged axially on the outer circumferential surface of the lower water distributor (23).

10. The water softening device according to any one of claims 1-9, characterized in that, It also includes a water valve (30), which is located on the top of the resin tank (10). The water valve (30) has a softening channel (301), a regeneration channel (302) and an outlet channel (303). The regeneration channel (302) is connected to the regeneration water pipe (22), and the outlet channel (303) is connected to the softening water pipe (21).

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