Water softening valve and water softener

Abstract

The invention discloses a water softening valve and a water softener, and relates to the technical field of water softeners, the water softening valve comprises a valve body, a blanking cap, an ejector and a plug structure; the valve body is provided with a valve cavity, a downstream salt suction channel and a countercurrent salt suction channel, the downstream salt suction channel comprises a first downstream channel communicated with the water inlet cavity and a second downstream channel communicated with the side wall cavity, and the countercurrent salt suction channel comprises a first countercurrent channel communicated with the water outlet cavity and a second countercurrent channel communicated with the center cavity; the blanking cap is installed on the valve body, the blanking cap and the valve body are enclosed to form a switching channel, and the switching channel is a part of a flow channel in the downstream salt suction channel or the countercurrent salt suction channel; the jet device is provided with a siphon cavity, is communicated with the second downstream channel or the second countercurrent channel, and is communicated with the water injection and salt absorption channel through the siphon cavity; the plug structure is used for blocking the reverse flow salt absorption channel or the forward flow salt absorption channel; according to the technical scheme, the manufacturing cost of the soft water valve can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water softeners, in particular to a water softener valve and a water softener. Background Art

[0002] A water softener can soften water, improving user experience and saving detergent and water. The core component of a water softener is the water softener valve. However, to meet user needs for different regeneration methods, existing technologies typically require a separate valve body for each regeneration method, requiring manufacturers to design and manufacture separate molds for each regeneration method. This design not only increases mold development costs but also prolongs product production cycles. Summary of the Invention

[0003] The main purpose of the present invention is to provide a water softening valve and a water softener, aiming to reduce the manufacturing cost of the water softening valve.

[0004] To achieve the above-mentioned purpose, the soft water valve proposed by the present invention comprises:

[0005] The valve body is provided with a valve cavity, a downstream salt absorption channel and a reverse salt absorption channel. The valve cavity includes a plurality of water passage cavities, and the plurality of water passage cavities include a water inlet cavity, a water outlet cavity, a side wall cavity, a central cavity, and a water injection and salt absorption cavity. The downstream salt absorption channel includes a first downstream channel connected to the water inlet cavity and a second downstream channel connected to the side wall cavity. The reverse salt absorption channel includes a first reverse flow channel connected to the water outlet cavity and a second reverse flow channel connected to the central cavity.

[0006] a plugging cover mounted on the valve body, wherein the plugging cover and the valve body enclose a transfer channel, wherein the transfer channel is a partial flow channel in the downstream salt absorption channel or the countercurrent salt absorption channel;

[0007] an ejector having a siphon cavity, the ejector being connected and installed in one of the second downstream channel and the second upstream channel, and connected to the water injection and salt absorption channel through the siphon cavity;

[0008] The plug structure is used to block the other of the downstream salt absorption channel and the countercurrent salt absorption channel.

[0009] In one embodiment, the valve body is further provided with a bypass flow channel, and the bypass flow channel is connected to the second downstream channel and the second upstream channel, and is also connected to the water injection and salt absorption cavity.

[0010] In one embodiment, the valve body includes a valve main body, and the valve main body has a protruding mounting protrusion;

[0011] The mounting protrusion includes a first mounting protrusion provided with the first downstream channel and the second downstream channel side by side, and a second mounting protrusion provided with the first upstream channel and the second upstream channel side by side;

[0012] The blocking cover is mounted on one of the first mounting protrusion and the second mounting protrusion, and the plug structure is arranged on the other one.

[0013] In one embodiment, the blocking cover is provided with a mounting groove adapted to the mounting protrusion, and a limiting protrusion is provided on the bottom wall of the mounting groove. The limiting protrusion is located between the blocking cover and the mounting protrusion, so that the blocking cover and the mounting protrusion are enclosed to form the transfer channel.

[0014] In one embodiment, the ejector includes an ejector body and an ejector limiting portion, the ejector body is arranged in the second downstream channel or the second upstream channel, and the ejector limiting portion is exposed outside the mounting protrusion and abuts against the limiting protrusion.

[0015] In one embodiment, the soft water valve further includes a mounting pin, the blocking cover is provided with a through hole for the mounting pin to pass through, the mounting protrusion is provided with a pin slot, the mounting pin passes through the through hole and is confined in the pin slot;

[0016] And / or, the mounting protrusion is further provided with a sealing ring groove, the sealing ring is embedded in the sealing ring groove, and the side away from the sealing ring groove abuts against the groove side wall of the blocking cover.

[0017] In one embodiment, the ejector includes an ejector body, and the ejector body includes a guide section, a mixing section, and a connecting section;

[0018] An ejector limiter is provided outside the guide section, and a guide cavity connected to the transfer channel is formed inside the guide section. A mixing cavity connected to the side wall cavity or the central cavity is provided inside the mixing section. The guide section and the mixing section are spaced apart and connected and enclosed by the connecting section to form the siphon cavity. The siphon cavity is connected to the guide cavity and the mixing cavity, and is also connected to the water injection and salt absorption cavity.

[0019] In one embodiment, the flow guide section is provided with a first annular groove, the first sealing ring is provided in the first annular groove, and a side away from the first annular groove abuts against a flow channel wall of the second downstream channel or the second upstream channel;

[0020] And / or, the mixing section is provided with a second annular groove, the second sealing ring is provided in the second annular groove, and a side away from the second annular groove abuts against a flow channel wall of the second downstream channel or the second countercurrent channel.

[0021] In one embodiment, the soft water valve further includes a filter, and the filter is arranged in the first downstream channel or the first upstream channel.

[0022] In one embodiment, the filter includes a filter body and a filter limiting portion provided outside the filter body, the filter body is sealedly connected to the first downstream channel or the first upstream channel, and the filter limiting portion is exposed outside the valve body to cooperate with the blocking cover to form the transfer channel.

[0023] In one embodiment, the plug structure is configured as a thin wall formed on the valve body, and the thin wall is provided in the downstream salt absorption channel and / or the countercurrent salt absorption channel;

[0024] Alternatively, the plug structure is configured as a sealing plug, and the sealing plug is used to block the downstream salt absorption channel or the countercurrent salt absorption channel.

[0025] In one embodiment, the soft water valve further includes a grille assembly provided in the valve cavity and a piston provided in the grille assembly, wherein the grille assembly divides the valve cavity into a plurality of water passage chambers in sequence along its axial direction, wherein the plurality of water passage chambers include the water inlet chamber, the side wall chamber, the sewage discharge chamber, the central chamber, the water outlet chamber, and the water injection and salt absorption chamber, and the water inlet chamber, the side wall chamber, the sewage discharge chamber, the central chamber, the water outlet chamber, and the water injection and salt absorption chamber are sequentially provided along the axial direction of the valve cavity;

[0026] The soft water valve has multiple water path modes, and the piston moves along the axial direction of the valve cavity to switch the soft water valve between the multiple water path modes.

[0027] In one embodiment, the grille assembly includes a plurality of grille units sequentially spliced and arranged along the axial direction of the valve cavity, and an outer sealing ring groove for mounting an outer sealing ring is formed between two adjacent grille units; the grille assembly has a pre-installed state, in which a widened gap can be formed between two adjacent grille units, and the width of the widened gap is smaller than the cross-sectional diameter of the outer sealing ring;

[0028] The soft water valve also includes a drive mounting seat that covers the valve cavity opening; when the valve cavity opening is in an open state, the grille assembly is installed to the valve cavity in the pre-installed state, and the widened gap widens the outer sealing ring groove to provide a larger deformation space for the outer sealing ring; when the drive mounting seat covers the valve cavity opening, the drive mounting seat abuts the grille assembly to eliminate the widened gap, so that the outer sealing ring abuts against the cavity wall of the valve cavity.

[0029] In one embodiment, the piston includes a first piston and a second piston, both of which are provided with a first water-passing ring groove. The axial position of the first water-passing ring groove on the first piston is different from the axial position of the second piston. Either the first piston or the second piston is installed in the grille assembly.

[0030] The multiple water channel modes include a regeneration water channel mode. When the first piston is installed in the grille assembly, in the regeneration water channel mode, the first water ring groove connects the central cavity and the sewage discharge cavity to achieve downstream regeneration; when the second piston is installed in the grille assembly, in the regeneration water channel mode, the first water ring groove connects the side wall cavity and the sewage discharge cavity to achieve countercurrent regeneration.

[0031] In one embodiment, the valve body includes a valve body and a valve base that are spliced together. The valve base is provided with a soft tank interface for connecting to a soft water tank. The valve body is provided with a first dividing rib on one side close to the valve base, which cooperates with the grille assembly to separate a plurality of water flow chambers. The valve base is provided with a second dividing rib corresponding to each of the first dividing ribs. The first dividing rib has a first rib surface and a second rib surface that are opposite in the radial direction of the valve cavity. The grille assembly is sealed and abutted against the first rib surface, and the second dividing rib is fixedly connected to the second rib surface.

[0032] The present invention also provides a water softener, which includes the water softening valve described above.

[0033] The valve body in the technical solution of the present invention is provided with a valve cavity, a downstream salt absorption channel and a reverse salt absorption channel. The valve cavity includes a plurality of water passage cavities, and the plurality of water passage cavities include a water inlet cavity, a water outlet cavity, a side wall cavity, a central cavity, and a water injection salt absorption cavity. The downstream salt absorption channel is used to connect the water inlet cavity and the side wall cavity, and the reverse salt absorption channel is used to connect the water outlet cavity and the central cavity. Then, the ejector can be selectively installed in the downstream salt absorption channel or the reverse salt absorption channel, and the reverse salt absorption channel or the downstream channel is blocked by a plug structure (not shown in the figure), so that the downstream salt absorption channel can be obtained. The downstream regeneration valve or the countercurrent regeneration valve is a valve that can be used to absorb salt in the water. That is, in actual use, only one of the downstream salt absorption channel and the countercurrent salt absorption channel needs to be retained, and the plug structure is used to block the other channel. The user can flexibly choose the soft water valve to be configured as a downstream regeneration valve or a countercurrent regeneration valve according to actual conditions. Specifically, the downstream regeneration valve and the countercurrent regeneration valve can share the same valve body, and there is no need to design and manufacture molds separately for each regeneration method. This can not only reduce the cost of mold development, but also help shorten the product production cycle and reduce time costs.

[0034] In addition, a transfer channel is formed by the cooperation of the blocking cover and the valve body. The transfer channel can serve as a partial flow channel in the downstream salt absorption channel or the countercurrent salt absorption channel to transfer the first downstream channel and the second downstream channel, or transfer the first countercurrent channel and the second countercurrent channel, to ensure the smooth flow of the working medium and effectively avoid leakage. At the same time, compared with installing the ejector in the valve cavity, which makes it difficult to disassemble and assemble it, the ejector can be disassembled and assembled by simply disassembling the blocking cover on the soft water valve, which helps to improve the efficiency of disassembly and assembly of the ejector. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0036] Figure 1 A schematic structural diagram of an embodiment of a soft water valve provided by the present invention from one angle;

[0037] Figure 2 for Figure 1 Schematic diagram of the structure of the medium soft water valve from another angle;

[0038] Figure 3 for Figure 2 Cross-sectional view of the medium soft water valve along AA;

[0039] Figure 4 for Figure 1 A structural diagram of the medium soft water valve from another angle;

[0040] Figure 5 for Figure 4 Cross-sectional view of the medium soft water valve along BB;

[0041] Figure 6 for Figure 1 Simplified structural diagram of the medium-soft water valve in water production mode;

[0042] Figure 7 for Figure 1 Simplified schematic diagram of the medium soft water valve in water injection mode;

[0043] Figure 8 for Figure 1 Simplified structural diagram of the medium soft water valve in forward wash mode;

[0044] Figure 9 for Figure 1 Simplified structural diagram of the medium soft water valve in backwash mode;

[0045] Figure 10 for Figure 1 Simplified structural diagram of the medium-soft water valve in downstream regeneration mode;

[0046] Figure 11 A simplified structural diagram of another embodiment of the soft water valve provided by the present invention in the countercurrent regeneration mode;

[0047] Figure 12 for Figure 1 A schematic structural diagram of the middle valve body at one angle;

[0048] Figure 13 for Figure 12 Cross-sectional view of the medium soft water valve along CC;

[0049] Figure 14 for Figure 1 A schematic structural diagram of the middle valve body from another angle;

[0050] Figure 15 for Figure 14 Cross-sectional view of the medium soft water valve along DD;

[0051] Figure 16 for Figure 1 Schematic diagram of the structure of the middle valve body;

[0052] Figure 17 for Figure 1 Schematic diagram of the structure of the middle valve base;

[0053] Figure 18 for Figure 1 Schematic diagram of the structure of the middle grille assembly;

[0054] Figure 19 for Figure 18 A partial enlarged view of point A in the middle;

[0055] Figure 20 This is a schematic diagram of the assembly of the plugging cover, ejector, and filter screen;

[0056] Figure 21 is a cross-sectional view of the ejector;

[0057] Figure 22 This is a schematic diagram of the assembly of the latch and the valve body.

[0058] Description of Figure Numbers:

[0059] 1. Valve body; 101. Water inlet channel; 102. Side wall channel; 103. Sewage discharge channel; 104. Center channel; 105. Water outlet channel; 106. Water injection and salt absorption channel; 11. Valve chamber; 111. Water passage chamber; 112. Water inlet chamber; 113. Side wall chamber; 114. Sewage discharge chamber; 115. Center chamber; 116. Water outlet chamber; 117. Water injection and salt absorption chamber; 1171. First sub-chamber; 1172. Second sub-chamber; 1173. Salt absorption hole; 1174. Water injection hole; 118. Water inlet; 119. Water outlet; 12. Downstream salt absorption channel; 121. First downstream channel; 122. Second downstream channel; 123. Transfer channel; 13. Countercurrent salt absorption channel; 131. First countercurrent channel; 132. Second countercurrent channel; 14. Bypass channel; 15. Valve body; 151. First dividing rib; 1511. First rib surface; 1512. Second rib surface; 152. Mounting protrusion; 1521. Latch slot; 1522. Sealing ring groove; 16. Valve base; 161. Soft tank interface; 162. Second dividing rib;

[0060] 2. Grille assembly; 21. Grille unit; 211. Outer sealing ring groove; 212. Widening gap; 22. Outer sealing ring; 23. Inner sealing ring; 24. Support retaining ring; 241. First support retaining ring; 242. Second support retaining ring; 243. Third support retaining ring; 244. Fourth support retaining ring; 245. Fifth support retaining ring; 246. Sixth support retaining ring; 247. Seventh support retaining ring; 3. Piston; 31. First piston body; 311. Water passage; 312. First water-passing annular groove; 32. Second piston body; 321. Second water-passing annular groove; 33. First piston; 34. Second piston; 4. Ejector; 41. Ejector body; 411. Diversion section; 412. Mixing section; 413. Connecting section; 42. Ejector stopper; 431. Diversion chamber; 432. Mixing chamber; 433. Siphon chamber; 441. First annular groove; 442. Second annular groove; 451. First sealing ring; 452. Second sealing ring; 5. Drive mounting seat;

[0061] 71. Plug cover; 711. Limiting protrusion; 712. Through hole; 72. Mounting pin; 721. Grip body; 722. Pin body; 723. Limiting hook; 73. Sealing ring; 8. Filter; 81. Filter body; 82. Filter limiting part; 200. Soft water tank; 300. Salt tank.

[0062] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0064] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0065] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0066] A water softener can soften water, improving user experience and saving detergent and water. The core component of a water softener is the water softener valve. However, to meet user needs for different regeneration methods, existing technologies typically require a separate valve body for each regeneration method, requiring manufacturers to design and manufacture separate molds for each regeneration method. This design not only increases mold development costs but also prolongs product production cycles.

[0067] In order to solve this technical problem, the present invention proposes a soft water valve, which is used for a water softener. As one of the core components of a water softener, the soft water valve often has multiple water channel modes, such as water production mode, forward washing mode, backwash mode and softening regeneration mode (water injection mode and salt absorption regeneration mode), etc., so that the water softener has multiple working conditions.

[0068] See also Figures 1 to 5 、 Figure 13In one embodiment of the present invention, the soft water valve includes a valve body 1, a plug cover 71, an ejector 4 and a plug structure; the valve body 1 is provided with a valve cavity 11, a downstream salt absorption channel 12 and a reverse salt absorption channel 13, the valve cavity 11 includes a plurality of water passage cavities 111, the plurality of water passage cavities 111 include an inlet cavity 112, a water outlet cavity 116, a side wall cavity 113, a central cavity 115, and a water injection and salt absorption cavity 117, the downstream salt absorption channel 12 includes a first downstream channel 121 communicating with the water inlet cavity 112, a second downstream channel 122 communicating with the side wall cavity 113, the reverse salt absorption channel 13 includes a first reverse flow channel 131 communicating with the water outlet cavity 116, a second reverse flow channel 132 communicating with the central cavity 115, and a reverse flow channel 133 communicating with the water outlet cavity 116. Channel 132; the plugging cover 71 is installed on the valve body 1, and the plugging cover 71 and the valve body 1 are enclosed to form a transfer channel 123, and the transfer channel 123 is a partial flow channel in the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13; the ejector 4 has a siphon chamber 433, and the ejector 4 is connected and installed in one of the second downstream channel 122 and the second countercurrent channel 132, and is connected to the water injection salt absorption chamber 117 through the siphon chamber 433; the plug structure is used to block the other of the downstream salt absorption channel 12 and the countercurrent salt absorption channel 13; so that users can choose a soft water valve with a corresponding regeneration method according to their needs, while reducing the manufacturing cost of the soft water valve.

[0069] The valve body 1 in the technical solution of the present invention is provided with a valve cavity 11, a downstream salt absorption channel 12 and a reverse salt absorption channel 13. The valve cavity 11 includes a plurality of water passage cavities 111, and the plurality of water passage cavities 111 include a water inlet cavity 112, a water outlet cavity 116, a side wall cavity 113, a central cavity 115, and a water injection and salt absorption cavity 117. The downstream salt absorption channel 12 is used to connect the water inlet cavity 112 and the side wall cavity 113, and the reverse salt absorption channel 13 is used to connect the water outlet cavity 116 and the central cavity 115. Then, the ejector 4 can be selectively installed in the downstream salt absorption channel 12 or the reverse salt absorption channel 13, and through the plug structure (not shown in the figure) ) by blocking the countercurrent salt absorption channel 13 or the downstream salt absorption channel 12, a downstream regeneration valve or a countercurrent regeneration valve can be obtained, that is, in actual use, only one of the downstream salt absorption channel 12 and the countercurrent salt absorption channel 13 needs to be retained, and the blocking setting of the other one is coordinated with the plug structure, so that the user can flexibly choose the soft water valve to be configured as a downstream regeneration valve or a countercurrent regeneration valve according to actual conditions. Specifically, the downstream regeneration valve and the countercurrent regeneration valve can share the same valve body 1, and there is no need to design and manufacture a mold separately for each regeneration mode, which can not only reduce the development cost of the mold, but also help to shorten the production cycle of the product and reduce time cost.

[0070] In addition, a transfer channel 123 is formed by the cooperation of the blocking cover 71 and the valve body 1. The transfer channel 123 can serve as a partial flow channel in the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13 to transfer the first downstream channel 121 and the second downstream channel 122, or to transfer the first countercurrent channel 131 and the second countercurrent channel 132, to ensure the smooth flow of the working medium and effectively avoid leakage. At the same time, compared with installing the ejector 4 in the valve cavity 11, which makes it difficult to disassemble and assemble it, the ejector 4 can be disassembled and assembled on the soft water valve by simply disassembling the blocking cover 71, which helps to improve the disassembly and assembly efficiency of the ejector 4.

[0071] Specifically, the valve body 1 is further provided with a water inlet channel 101 connected to the water inlet chamber 112, a water outlet channel 105 connected to the water outlet chamber 116, a side wall channel 102 connected to the side wall chamber 113, a central channel 104 connected to the central chamber 115, and a water injection and salt absorption channel 106 connected to the water injection and salt absorption chamber 117. The water inlet chamber 112 is connected to the water inlet channel 101 through a water inlet 118 on the wall of the valve chamber 11, and the water outlet chamber 116 is connected to the water outlet channel 105 through a water outlet 119 on the wall of the valve chamber 11. In the axial direction of the valve chamber 11, the width of the water inlet 118 and the water outlet 119 can be less than or equal to the axial width of the corresponding chamber, thereby increasing the water inlet of the soft water valve on the basis of ensuring the sealing of the corresponding chamber, thereby ensuring the soft water efficiency of the soft water valve.

[0072] The water injection and salt absorption chamber 117 is connected to the salt box 300 through the water injection and salt absorption channel 106, the side wall chamber 113 is connected to the soft water tank 200 through the side wall channel 102, and the central chamber 115 is connected to the soft water tank 200 through the central channel 104. In combination with the second downstream channel 122 of the downstream salt absorption channel 12 being connected to the side wall channel 102 and the second countercurrent channel 132 of the countercurrent salt absorption channel 13 being connected to the central channel 104, when the ejector 4 is arranged in the second downstream channel 122, the ejector 4 is connected to the water inlet chamber 112 and the side wall chamber respectively. When ejector 4 is positioned within second countercurrent channel 132, it communicates with outlet chamber 116 and central chamber 115. Ejector 4 also includes a siphon chamber 433 connected to water injection and salt absorption chamber 117. When working medium flows into ejector 4, siphon chamber 433 is triggered to draw salt water from salt tank 300 into ejector 4 for mixing. The mixed medium is then discharged to soft water tank 200 via side channel 102 or central channel 104, achieving either downstream or upstream regeneration of the soft water medium within soft water tank 200. It should be noted that the working medium is the water entering through inlet channel 101 or outlet channel 105, specifically hard water; the soft water medium is the resin particles used to soften water within soft water tank 200; and the salt water, acting as a regeneration fluid, activates the adsorption capacity of the resin particles.

[0073] Please refer to Figures 15 to 16In an embodiment of the present invention, the valve body 1 is further provided with a bypass flow channel 14, which connects the second downstream channel 122 and the second countercurrent channel 132, and also connects to the water injection and salt absorption chamber 117. When retaining either the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13, it is reliably ensured that the second downstream channel 122 or the second countercurrent channel 132 can be connected to the water injection and salt absorption chamber 117 through the bypass flow channel 14, thereby improving the reliability of the soft water valve in extracting brine and effectively simplifying the structure of the valve body 1.

[0074] The downstream salt absorption channel 12 and the countercurrent salt absorption channel 13 are located on the same side of the bypass channel 14 , which facilitates installation of the plug cover 71 on the same side of the valve body 1 and facilitates processing of the downstream salt absorption channel 12 and the countercurrent salt absorption channel 13 .

[0075] Please refer to Figures 12 to 14 In an embodiment of the present invention, the valve body 1 includes a valve body 15, and the valve body 15 has a protruding mounting protrusion 152; the mounting protrusion 152 includes a first mounting protrusion 152 in which the first downstream channel 121 and the second downstream channel 122 are arranged side by side, and a second mounting protrusion 152 in which the first upstream channel 131 and the second upstream channel 132 are arranged side by side; the blocking cover 71 is mounted on one of the first mounting protrusion 152 and the second mounting protrusion 152, and the plug structure is arranged on the other one.

[0076] It can be understood that the mounting protrusion 152 protrudes from the outer surface of the valve body 15, and can complete the processing of the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13 without occupying the space of the valve cavity 11, wherein the first downstream channel 121 and the second downstream channel 122 are arranged side by side on the first mounting protrusion 152, and the first countercurrent channel 131 and the second countercurrent channel 132 are arranged side by side on the second mounting protrusion 152, which can shorten the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13 and reduce the space occupied, thereby reducing the volume of the mounting protrusion 152 while ensuring the normal triggering of the siphon cavity 433 and the normal extraction of brine.

[0077] In addition, the setting of the first mounting protrusion 152 and the second mounting protrusion 152 can provide an assembly position for the plugging cover 71 and the ejector 4 that is easy to assemble, ensuring the convenient disassembly and assembly of the plugging cover 71 and the ejector 4 on the valve body 15, thereby improving the overall assembly efficiency and facilitating the sealing setting of the plug structure on the mounting protrusion 152.

[0078] Two ejectors 4 can be set, and the two ejectors 4 are respectively set in the second downstream channel 122 and the second countercurrent channel 132. It is only necessary to set a plug structure on the unselected downstream salt absorption channel 12 or countercurrent salt absorption channel 13, specifically on the first downstream channel 121 or the first countercurrent channel 131.

[0079] Please refer to Figure 20 In an embodiment of the present invention, the blocking cover 71 is provided with a mounting groove adapted to the mounting protrusion 152, and a limiting protrusion 711 is provided on the bottom wall of the mounting groove. The limiting protrusion 711 is located between the blocking cover 71 and the mounting protrusion 152, so that the blocking cover 71 and the mounting protrusion 152 enclose the transfer channel 123 to form the transfer channel 123. Such a configuration can make the bottom wall of the groove away from the end face of the mounting protrusion 152, so as to form a transfer channel 123 between the bottom wall of the groove and the end face of the mounting protrusion 152, thereby realizing the conduction of the first downstream channel 121 and the second downstream channel 122, or the first upstream channel 131 and the second upstream channel 132. However, the present design is not limited to this. In other embodiments, the first downstream channel 121 and the second downstream channel 122, or the first upstream channel 131 and the second upstream channel 132 share a channel wall, a connecting notch is provided on the channel wall, and when the bottom wall of the groove abuts against the end face of the mounting protrusion 152, the bottom wall of the groove covers the connecting notch to form a transfer channel 123 by enclosing the bottom wall of the groove and the connecting notch.

[0080] Furthermore, in an embodiment of the present invention, the ejector 4 includes an ejector body 41 and an ejector limiting portion 42, the ejector body 41 is arranged in the second downstream channel 122 or the second upstream channel 132, the ejector limiting portion 42 is exposed outside the mounting protrusion 152, and abuts against the limiting protrusion 711, so that when the blocking cover 71 is mounted on the mounting protrusion 152, the limiting protrusion 711 on the blocking cover 71 presses against the ejector limiting portion 42 without affecting the flow of the working medium, which can enhance the installation stability of the ejector 4 on the mounting protrusion 152, reduce the possibility of the ejector 4 moving on the downstream salt absorption channel 12 or the upstream salt absorption channel 13, and facilitate the formation of the transfer channel 123, thereby ensuring that the working medium flows into the ejector 4 and reliably triggers the siphon chamber 433 to work. However, the present design is not limited to this. In other embodiments, the limiting protrusion 711 can also abut against the end surface of the mounting protrusion 152; for example, the mounting protrusion 152 is provided with a limiting step for the ejector limiting portion 42 to be embedded. At this time, the limiting protrusion 711 can abut against the end surface of the mounting protrusion 152 and / or the ejector limiting portion 42.

[0081] Please refer to Figures 20 to 21 In an embodiment of the present invention, the ejector 4 includes an ejector body 41 , and the ejector body 41 includes a guide section 411 , a mixing section 412 and a connecting section 413 ;

[0082] The guide section 411 is provided with an ejector limiter 42 on the outside, and a guide cavity 431 connected to the transfer channel 123 is formed inside the guide section 411. A mixing cavity 432 connected to the side wall cavity 113 or the central cavity 115 is provided inside the mixing section 412. The guide section 411 and the mixing section 412 are spaced apart and connected and enclosed by the connecting section 413 to form the siphon cavity 433. The siphon cavity 433 connects the guide cavity 431 and the mixing cavity 432, and is also connected to the water injection and salt absorption cavity 117.

[0083] It can be understood that since the diversion chamber 431 is connected to the transfer channel 123, the working medium with a certain pressure enters the diversion chamber 431 through the transfer channel 123 and flows into the siphon chamber 433. At this time, a low-pressure area is formed at the connection point between the diversion chamber 431 and the siphon chamber 433. The connection point is a through hole formed in the diversion section 411. Since the siphon chamber 433 can be connected to the water injection and salt absorption chamber 117 through the bypass channel 14, the low-pressure area can allow the brine in the salt box 300 to be sucked into the siphon chamber 433 through the water injection and salt absorption chamber 117 and the bypass channel 14, and flow to the mixing chamber 432 with the working medium for mixing and energy exchange, and finally flow into the soft water tank 200 through the side wall cavity 113 or the central cavity 115, thereby realizing the activation and regeneration of the soft water medium.

[0084] The two ends of the connecting section 413 are respectively connected to the diversion section 411 and the mixing section 412, wherein a plurality of connecting sections 413 can be arranged at intervals to form a water passage connecting the siphon chamber 433 and the bypass channel 14 between the two connecting sections 413, or the connecting section 413 is a cylinder with a water hole provided on the cylinder, so as to ensure that the brine can be sucked into the siphon chamber 433.

[0085] Specifically, in an embodiment of the present invention, the guide section 411 is provided with a first annular groove 441, and the first sealing ring 451 is provided in the first annular groove 441, and the side away from the first annular groove 441 abuts against the flow wall of the second downstream channel 122 or the second countercurrent channel 132. In this way, the possibility of the working medium flowing to the siphon chamber 433 through the gap between the guide section 411 and the flow wall of the second downstream channel 122 or the second countercurrent channel 132 can be reduced, thereby achieving the uniqueness of the flow direction of the working medium, and further ensuring that the ejector 4 can form a low-pressure area at the connection point between the guide chamber 431 and the siphon chamber 433, thereby reliably triggering the siphon chamber 433 to suck brine, thereby achieving the regeneration operation of the soft water medium.

[0086] Specifically, in an embodiment of the present invention, the mixing section 412 is provided with a second annular groove 442, and the second sealing ring 452 is provided in the second annular groove 442, and the side away from the second annular groove 442 abuts against the flow wall of the second downstream channel 122 or the second countercurrent channel 132. In this way, the possibility of the working medium and brine flowing to the side wall cavity 113 or the center cavity 115 through the gap between the mixing section 412 and the flow wall of the second downstream channel 122 or the second countercurrent channel 132 can be reduced, thereby realizing the uniqueness of the flow direction of the mixed medium, and further ensuring that the mixed medium flowing out of the ejector 4 can be discharged to the side wall cavity 113 or the center cavity 115 at a higher pressure, thereby realizing the regeneration operation of the soft water medium.

[0087] See also Figure 14 、 Figure 20 and Figure 22 In an embodiment of the present invention, the soft water valve further includes an installation latch 72, the blocking cover 71 is provided with a through hole 712 for the installation latch 72 to pass through, and the mounting protrusion 152 is provided with a latch groove 1521, the installation latch 72 passes through the through hole 712 and is limited in the latch groove 1521; it can be understood that the blocking cover 71 is penetrated by a through hole 712, the through hole 712 includes a first hole portion and a second hole portion, when the blocking cover 71 is fitted on the mounting protrusion 152, the first hole portion and the second hole portion are both aligned with the latch groove 1521 on the mounting protrusion 152, and the installation latch 72 includes a gripping body 721 and two latch bodies 722 laterally connected to the same side of the gripping body 721, the gripping body 721 is also provided with a limiting hook 723 that engages with the first hole portion, and the latch body 722 can be correspondingly inserted into the second hole portion.

[0088] Specifically, after the plug cover 71 is fitted onto the mounting protrusion 152, the latch body 722 is inserted into the second hole portion, and at the same time, at least partially retained within the latch groove 1521. The limiting hook 723 passes through the first hole portion and is retained within the latch groove 1521. This arrangement effectively prevents the plug cover 71 from being separated from the mounting protrusion 152 through the limiting cooperation of the limiting hook 723, the latch body 722, and the latch groove 1521, thereby improving the installation reliability of the plug cover 71 on the valve body 1 and facilitating the rapid removal and assembly of the plug cover 71. However, the present design is not limited to this, and in other embodiments, the plug cover 71 is threadedly connected to the mounting protrusion 152.

[0089] See also Figure 14 、 Figure 20 In an embodiment of the present invention, the mounting protrusion 152 is further provided with a sealing ring groove 1522. The sealing ring is embedded in the sealing ring groove 1522, and the side away from the sealing ring groove 1522 abuts against the groove side wall of the blocking cover 71. In this way, the working medium is effectively prevented from flowing out of the valve body 1 through the gap between the blocking cover 71 and the mounting protrusion 152, thereby reducing the waste of water resources.

[0090] Specifically, the sealing ring groove 1522 and the pin groove 1521 are arranged at intervals along the axial extension direction of the mounting protrusion 152. The sealing ring groove 1522 is set close to the end face of the mounting protrusion 152 away from the valve body 15 to block the flow of the medium. At the same time, it effectively prevents the medium from flowing out of the blocking cover 71 through the through hole 712.

[0091] See also Figure 13 、 Figure 20 In an embodiment of the present invention, the soft water valve further includes a filter screen 8, which is arranged in the first downstream channel 121 or the first upstream channel 131. The first downstream channel 121 is connected to the water inlet chamber 112, and the first upstream channel 131 is connected to the water outlet chamber 116. By setting the filter screen 8, the impurities carried by the working medium flowing to the ejector 4 can be effectively reduced, the risk of blockage of the guide chamber 431 can be reduced, and the normal operation of the ejector 4 can be ensured.

[0092] Specifically, in an embodiment of the present invention, the filter 8 includes a filter body 81 and a filter limiting portion 82 provided outside the filter body 81, the filter body 81 is sealed and connected to the first downstream channel 121 or the first upstream channel 131, and the filter limiting portion 82 is exposed outside the valve body 1 to cooperate with the blocking cover 71 to form the transfer channel 123. In this way, when the blocking cover 71 is mounted on the mounting protrusion 152, the limiting protrusion 711 on the blocking cover 71 presses against the filter limiting portion 82 without affecting the flow of the working medium, which can enhance the installation stability of the filter 8 on the mounting protrusion 152, reduce the possibility of the filter 8 moving on the downstream salt absorption channel 12 or the upstream salt absorption channel 13, and facilitate the formation of the transfer channel 123, ensuring that the working medium flows out of the filter 8 and flows to the siphon chamber 433 to trigger the siphon chamber 433 to work. However, the present design is not limited to this. In other embodiments, the limiting protrusion 711 can also abut against the end face of the mounting protrusion 152; for example, the mounting protrusion 152 is provided with a limiting step for the filter limiting portion 82 to be embedded. At this time, the limiting protrusion 711 can abut against the end face of the mounting protrusion 152 and / or the filter limiting portion 82.

[0093] Optionally, in an embodiment of the present invention, the plug structure is configured as a thin wall formed on the valve body 1, and the thin wall is provided in the downstream salt absorption channel 12 and / or the countercurrent salt absorption channel 13; it can be understood that the thin wall can be formed in the first downstream channel 121, the second downstream channel 122, the first countercurrent channel 131, and the second countercurrent channel 132 in the process of processing the valve body 1, away from the side of the corresponding water flow cavity 111, and exposed on the surface of the valve body 1, thereby simplifying the overall structure of the soft water valve.

[0094] Limiting the thickness of the thin wall to about 3 mm can not only ensure the connection between the thin wall and the valve body 1, but also, when the soft water valve is selected as the downstream regeneration valve, it is convenient to destroy the thin wall arranged on the downstream salt absorption channel 12, thereby facilitating the installation of the ejector 4 to the second downstream channel 122, and further fixing the ejector 4 to the valve body 1 through the plugging cover 71. When the soft water valve is selected as the reverse flow regeneration valve, it is convenient to destroy the thin wall arranged on the reverse flow salt absorption channel 13, thereby facilitating the installation of the ejector 4 to the second reverse flow channel 132, and further fixing the ejector 4 to the valve body 1 through the plugging cover 71, thereby ensuring the stable installation of the ejector 4 and realizing the downstream regeneration or reverse flow regeneration of the soft water valve.

[0095] Optionally, in an embodiment of the present invention, the plug structure is configured as a sealing plug, which is used to block the downstream salt absorption channel 12 or the reverse salt absorption channel 13. In this way, when the soft water valve is selected as the downstream regeneration valve, after the ejector 4 is installed in the second downstream channel 122, the ejector 4 is further fixed to the valve body 1 by the plugging cover 71, and the first reverse flow channel 131 and the second reverse flow channel 132 are blocked by the sealing plug. At this time, the sealing plug may have a shape that is adapted to the first reverse flow channel 131. and the two plungers of the second countercurrent channel 132. When the soft water valve is selected as the countercurrent regeneration valve, after the ejector 4 is installed in the second countercurrent channel 132, the plug cover 71 is used to further fix the ejector 4 on the valve body 1, and the first downstream channel 121 and the second downstream channel 122 are blocked by the sealing plug. At this time, the sealing plug may have two plungers adapted to the first downstream channel 121 and the second downstream channel 122, thereby ensuring the stable installation of the ejector 4 and realizing the downstream regeneration or countercurrent regeneration of the soft water valve.

[0096] However, the present design is not limited thereto. In other embodiments, the first downstream channel 121 and the second downstream channel 122, or the first countercurrent channel 131 and the second countercurrent channel 132 share a channel wall and are connected through a connecting gap on the channel wall. In this way, the downstream salt absorption channel 12 or the countercurrent salt absorption channel 13 can be blocked by blocking the connecting gap.

[0097] See also Figures 2 to 5In an embodiment of the present invention, the soft water valve further includes a grille assembly 2 disposed in the valve chamber 11 and a piston 3 disposed in the grille assembly 2. The grille assembly 2 divides the valve chamber 11 into a plurality of water passage chambers 111 in sequence along its axial direction. The plurality of water passage chambers 111 include the water inlet chamber 112, the side wall chamber 113, the sewage discharge chamber 114, the central chamber 115, the water outlet chamber 116, and the water injection and salt absorption chamber 117. The water inlet chamber 112, the side wall chamber 113, the sewage discharge chamber 114, the central chamber 115, the water outlet chamber 116, and the water injection and salt absorption chamber 117 are sequentially arranged along the axial direction of the valve chamber 11. The soft water valve has multiple water path modes, and the piston 3 moves along the axial direction of the valve chamber 11 to switch the soft water valve between the multiple water path modes.

[0098] As you can understand, the water softener in this solution utilizes a piston-type valve. Specifically, the valve chamber 11 is divided into multiple water passage chambers 111 by a grid assembly 2. The axial movement of the piston 3 within the grid assembly 2 controls the flow between the multiple water passage chambers 111, enabling the valve to switch between multiple water path modes. This piston-type valve offers a higher flow rate and softening efficiency, making it easier to achieve the design goals of a small size, high flow rate, high water production, and high salt efficiency. Furthermore, this valve has a long service life.

[0099] See also Figure 3 、 Figure 5 and Figure 18 、 Figure 19 The grille assembly 2 includes a plurality of grille units 21. Each grille unit 21 can separate a water passage cavity 111. The connection between two grille units 21 forms a support ring 24 for separating the water passage cavity 111. The plurality of grille units 21 can be integrally formed or formed in separate parts and then spliced together to form an integral structure.

[0100] The grille assembly 2 is inserted into the valve cavity 11 from the cavity opening, and the outer peripheral edge of the grille assembly 2 is sealed against the inner peripheral surface of the valve cavity 11. Specifically, an outer sealing ring 22 is provided between the outer peripheral edge of the support retaining ring 24 and the inner peripheral surface of the valve cavity 11 to divide the valve cavity 11 into multiple water flow cavities 111 along its axial direction and reduce the possibility of water seepage between the multiple water flow cavities 111. The piston 3 is inserted into the inner periphery of the grille assembly 2, and the outer periphery of the piston 3 is sealed against the inner periphery of the grille assembly 2, that is, the outer periphery of the piston 3 is sealed against the inner sealing ring 23 at the inner periphery of the support retaining ring 24, thereby cutting off the communication between the two adjacent water flow chambers 111, and the piston 3 is generally provided with multiple water flow levels. When the piston 3 moves to a certain position, at least one of the multiple support retaining rings 24 is arranged relative to the water flow level of the piston 3, thereby forming a water flow gap at the inner periphery of the support retaining ring 24 and the water flow level of the piston 3, thereby realizing the conduction of the water flow chambers 111 on both sides of the support retaining ring 24. In this way, the axial movement of the piston 3 can be used to make the different water flow chambers 111 conductive, thereby efficiently controlling the direction of water flow and forming a corresponding water path.

[0101] See also Figure 13 The valve chamber 11 in this embodiment can be cylindrical as a whole, or formed by splicing multiple cylindrical sections to facilitate the installation of the grille assembly 2 and the piston 3. The water inlet channel 101, side wall channel 102, sewage discharge channel 103, central channel 104, water outlet channel 105 and water injection and salt absorption channel 106 on the valve body 1 are arranged along the axial direction of the valve chamber 11. In order to increase the flow area of the soft water valve, at least one of the water inlet channel 101, side wall channel 102, sewage discharge channel 103, central channel 104, water outlet channel 105 and water injection and salt absorption channel 106 is staggered with the other ones in the circumferential direction of the valve chamber 11. The reasonable design of the positions of the water inlet channel 101, side wall channel 102, sewage discharge channel 103, central channel 104, water outlet channel 105 and water injection and salt absorption channel 106 also helps to control the overall volume of the soft water valve. Among them, the water inlet channel 101, side wall channel 102, sewage discharge channel 103, central channel 104, water outlet channel 105 and water injection and salt absorption channel 106 are respectively connected to corresponding pipelines at one end away from the valve chamber 11, thereby realizing the installation of the soft water valve in the water softener.

[0102] The valve body 1 can be formed by splicing together several parts that are fastened by bolts and sealed with sealing rings and other structures on the mating surfaces; it can also be formed by connecting several parts together by ultrasonic welding, which helps to form a more complex valve cavity 11 and various channel structures; furthermore, the valve body 1 can also be formed in one piece, such as by 3D printing technology, to adapt to small-batch production.

[0103] The multiple water passage chambers 111 include a water inlet chamber 112 connected to the water inlet channel 101, a side wall chamber 113 connected to the side wall channel 102, a sewage discharge chamber 114 connected to the sewage discharge channel 103, a central chamber 115 connected to the central channel 104, a water outlet chamber 116 connected to the water outlet channel 105, and a water injection and salt absorption chamber 117 connected to the water injection and salt absorption channel 106. The water inlet channel 101 is used to communicate with an external water inlet pipe to supply raw water to the soft water valve; the side wall channel 102 and the central channel 104 are both used to connect to the soft water tank 200; the sewage channel 103 is connected to the external sewage pipe to discharge the waste water in the water softener; the water outlet channel 105 is connected to the external water outlet pipe to discharge the produced soft water; the water injection and salt absorption channel 106 is connected to the salt tank 300 to realize water injection into the salt tank 300 and to pass the salt water in the salt tank 300 into the soft water tank 200 to realize the regeneration of the soft water medium in the soft water tank 200.

[0104] Understandably, Figures 3 to 5 The water inlet chamber 112 and the water outlet chamber 116 are connected to the soft water tank 200 by means of the side wall chamber 113 and the central chamber 115. Therefore, the side wall chamber 113 is adjacent to the water inlet chamber 112, so that the water inlet chamber 112 is connected to the soft water tank 200 through the side wall chamber 113, and the two are adjacent to each other, thereby narrowing the flow path of raw water flowing into the soft water tank 200, thereby simplifying the water path in the soft water valve; the central chamber 115 is adjacent to the water outlet chamber 116, so that the water outlet chamber 116 is connected to the soft water tank 200 through the central chamber 115, and the two are adjacent to each other, thereby narrowing the flow path of softened soft water flowing out of the soft water tank 200, thereby simplifying the water path in the soft water valve. Among them, in order to facilitate the connection of the valve body 1 to the soft water tank 200, the side wall channel 102 and the central channel 104 can be connected to the soft water tank 200 through the soft tank interface 161. At this time, the side wall channel 102 and the central channel 104 are arranged at intervals in the soft water interface, and the remaining channels can be connected to the corresponding external pipelines through quick connectors.

[0105] When the softened water in the soft water tank 200 flows out of the soft water valve, part of the soft water can flow into the water absorption and salt injection chamber, thereby injecting water into the salt box 300. Therefore, the water injection and salt absorption chamber 117 is adjacent to the side of the water outlet chamber 116 away from the central chamber 115, so that when the soft water flows through the water outlet chamber 116, part of the soft water can flow directly from the water outlet chamber 116 to the water injection and salt absorption chamber 117. Compared with the water injection and salt absorption chamber 117 being separated from the water outlet chamber 116 and the two being connected by a special flow channel, this solution can effectively shorten the flow path of the soft water flowing into the salt box 300, thereby further optimizing the water path of the soft water valve, and no additional special flow channel is required, which helps to reduce the volume of the soft water valve.

[0106] Furthermore, the sewage chamber 114 is located between the sidewall chamber 113 and the central chamber 115. Thus, on the one hand, the sewage chamber 114 can increase the distance between the water inlet chamber 112 and the water outlet chamber 116, which not only facilitates the arrangement of the water inlet channel 101 and the water outlet channel 105, but also facilitates increasing the inner diameter of the water inlet channel 101 and the water outlet channel 105, thereby increasing the inlet and outlet water flow and improving work efficiency. On the other hand, the sewage chamber 114 is located near the middle of the valve chamber 11. Therefore, whether the forward wash mode or the backwash mode is adopted, the wastewater in the soft water tank 200 can be discharged to the sewage chamber 114 nearby, which helps to shorten the outflow path of the water channel in the forward wash mode and the backwash mode, thereby further optimizing the water channel path. In other embodiments, the sewage chamber 114 can also be located on the side of the water inlet chamber 112 away from the water outlet chamber 116.

[0107] Therefore, the water inlet chamber 112, side wall chamber 113, sewage discharge chamber 114, central chamber 115, water outlet chamber 116 and water injection and salt absorption chamber 117 in this solution are arranged in sequence along the axial direction of the valve chamber 11. This arrangement can take into account multiple water channel modes, so that the water flow paths in multiple water channel modes are relatively short, reducing the possibility of the water flow path detouring and flowing out in the valve chamber 11 (for example, in a certain water channel mode, when water flows from one chamber to another, it needs to cross multiple chambers along the axial direction of the valve chamber 11 to reach it, and then cross multiple chambers in the opposite direction to flow out of the soft water valve), thereby improving the rationality of the arrangement of multiple water flow chambers 111, simplifying the water flow path, and also helping to reduce the overall volume of the soft water valve.

[0108] Furthermore, because the water injection and salt absorption chamber 117 is only used to inject water into the brine tank 300 or inject salt water into the soft water tank 200, the required water flow rate is smaller than that of the water inlet chamber 112 and the water outlet chamber 116. Therefore, the volume of the water injection and salt absorption chamber 117 can be appropriately reduced, thereby reducing the inner diameter of the valve chamber 11 at the water injection and salt absorption chamber 117, and further reducing the volume of the valve body 1. Therefore, the water inlet chamber 112 is located on the side of the valve chamber 11 near the chamber opening, and the water injection and salt absorption chamber 117 is located on the side away from the chamber opening. While facilitating the installation of the grille assembly 2 on the valve chamber 11, the inner diameter of the grille unit 21 at the water injection and salt absorption chamber 117 can be smaller than the inner diameters of the remaining grille units 21.

[0109] More specifically, in order to adapt to the grille assembly 2, in one embodiment, as Figure 5 As shown, the piston 3 includes a first piston body 31 and a second piston body 32 connected to each other. The diameter of the first piston body 31 is larger than the diameter of the second piston body 32. The first piston body 31 is provided with a water passage 311 with both ends passing through. The outer periphery of the first piston body 31 is provided with a first water passage ring groove 312, and the outer periphery of the second piston body 32 is provided with a second water passage ring groove 321.

[0110] Specifically, the first water-passing annular groove 312 and the second water-passing annular groove 321 are the water-passing positions on the piston 3. The second piston body 32 is used to cooperate with the grid unit 21 at the water injection and salt absorption chamber 117, and the first piston body 31 is used to cooperate with other grid units 21. Compared with using a piston 3 with equal inner diameter and providing three water-passing grooves on the piston 3, the actual design not only needs to take into account the relative positions of the three water-passing grooves, but also needs to design the sizes of the three water-passing grooves separately, which makes the design more complicated and the opening of the water-passing channel 311 more difficult. In this solution, the diameter of the first piston body 31 is larger than the diameter of the second piston body 32, so that a water-passing step can be formed at the connection between the first piston body 31 and the second piston body 32, facilitating the communication between multiple water-passing chambers 111 through the water-passing step. The water-passing channel 311 and the first water-passing annular groove 312 on the first piston body 31 and the second water-passing annular groove 321 on the second piston body 32 can realize the switching of multiple water path modes, which helps to reduce the design difficulty of the piston 3 and thus simplify the structure of the piston 3.

[0111] And because the grid assembly 2 includes a plurality of support rings 24 that separate the water passage chambers 111, and the plurality of water passage chambers 111 include a water inlet chamber 112, a side wall chamber 113, a sewage discharge chamber 114, a central chamber 115, a water outlet chamber 116 and a water injection and salt absorption chamber 117. For the convenience of explanation, as shown in FIG. Figures 6 to 11 As shown, the multiple support baffles 24 include a first support baffle 241, a second support baffle 242, a third support baffle 243, a fourth support baffle 244, a fifth support baffle 245, a sixth support baffle 246, and a seventh support baffle 247 arranged in sequence, wherein the water inlet chamber 112 is formed between the first support baffle 241 and the second support baffle 242, the side wall chamber 113 is formed between the second support baffle 242 and the third support baffle 243, the sewage discharge chamber 114 is formed between the third support baffle 243 and the fourth support baffle 244, the central chamber 115 is formed between the fourth support baffle 244 and the fifth support baffle 245, the water outlet chamber 116 is formed between the fifth support baffle 245 and the sixth support baffle 246, and the water injection and salt absorption chamber 117 is formed between the sixth support baffle 246 and the seventh support baffle 247.

[0112] See also Figure 3 、 Figure 5 and Figure 6In an embodiment of the present invention, the plurality of water channel modes include a water production mode. In the water production mode, the piston 3 moves to the water production position. At this time, the first water flow groove 312 faces the second support retaining ring 242, so that the water inlet chamber 112 is connected to the side wall chamber 113 through the first water flow groove 312; at the same time, the outer periphery of the first piston body 31 abuts against the inner periphery of the first support retaining ring 241, the third support retaining ring 243 and the fourth support retaining ring 244, respectively, to block the communication between the water inlet chamber 112 and the water flow channel 311, and the side wall The cavity 113 is connected with the sewage cavity 114, and the central cavity 115 is connected with the sewage cavity 114; the connection between the first piston body 31 and the second piston body 32 faces the central cavity 115, so that the central cavity 115 is connected to the water outlet cavity 116 through the formed water pass step; at the same time, the second water pass ring groove 321 faces the water outlet cavity 116, and the outer peripheral surface of the end of the second piston body 32 away from the first piston body 31 respectively abuts against the sixth support baffle ring 246 and the seventh support baffle ring 247 to seal the water injection and salt absorption cavity 117.

[0113] Figure 6 This is a simplified schematic diagram of the softening valve in water production mode. The arrows in the figure indicate the direction of water flow within the softening valve in this mode. In this mode, the water flow path is as follows: raw water flows from inlet channel 101 into inlet chamber 112, then flows sequentially to sidewall chamber 113 and sidewall channel 102, and then into softening tank 200 for softening. The softened water then flows from central channel 104 into central chamber 115, then through central chamber 115, through outlet chamber 116 and outlet channel 105, and finally out of the softening valve, completing normal water production.

[0114] See also Figure 3 、 Figure 5 and Figure 7In an embodiment of the present invention, the plurality of water channel modes include a water injection mode. In the water injection mode, the piston 3 moves to the water injection position. At this time, the first water flow ring groove 312 faces the second support retaining ring 242, so that the water inlet chamber 112 is connected to the side wall chamber 113 through the first water flow ring groove 312; at the same time, the outer periphery of the first piston body 31 abuts against the inner periphery of the first support retaining ring 241, the third support retaining ring 243 and the fourth support retaining ring 244, respectively, to block the communication between the water inlet chamber 112 and the water flow channel 311, the communication between the side wall chamber 113 and the sewage chamber 114, and the communication between the central chamber 115 and the sewage chamber 11 4; the connection between the first piston body 31 and the second piston body 32 faces the central cavity 115, so that the central cavity 115 is connected to the water outlet cavity 116 through the formed water step; at the same time, the second water ring groove 321 faces the sixth support baffle ring 246, so that the water outlet cavity 116 is connected to the water injection and salt absorption cavity 117 through the second water ring groove 321, and the outer peripheral surface of the end of the second piston body 32 away from the first piston body 31 abuts against the seventh support baffle ring 247, thereby blocking the side of the water injection and salt absorption cavity 117 away from the water outlet cavity 116 (that is, blocking the connection between the water injection and salt absorption cavity 117 and the bypass channel 14).

[0115] Figure 7 The simplified structural diagram of the water softening valve in the water injection mode is shown in FIG. 1 , where the direction indicated by the arrow is the water flow direction of the water softening valve in the water injection mode. Therefore, in the water injection mode, the flow path of the water flow is as follows: after the raw water flows into the water inlet chamber 112 from the water inlet channel 101, it flows to the side wall chamber 113 and the side wall channel 102 in sequence, and then flows into the soft water tank 200 for softening treatment; the softened soft water flows into the central chamber 115 from the central channel 104, and then flows into the water outlet chamber 116 through the central chamber 115. In the water outlet chamber 116, the soft water is divided into two parts. One part flows through the water outlet channel 105 and flows out of the soft water valve for normal soft water production; the other part flows into the water injection and salt absorption chamber 117 and flows to the salt tank 300 through the water injection and salt absorption channel 106. In this way, when water is injected into the salt tank 300, the preparation of soft water is uninterrupted, and the water entering the salt tank 300 is ensured to be softened soft water, which can reduce the consumption of salt in the salt tank 300.

[0116] See also Figure 3 、 Figure 5 and Figure 8In an embodiment of the present invention, the plurality of waterway modes include a forward wash mode. In the forward wash mode, the piston 3 moves to the forward wash position. At this time, the first piston body 31 abuts against the third support baffle ring 243 and the fifth support baffle ring 245 respectively to block the communication between the side wall cavity 113 and the sewage cavity 114, and the communication between the water outlet cavity 116 and the central cavity 115. Moreover, since the first piston body 31 does not abut against the first support baffle ring 241 and the second support baffle ring 242, the water inlet cavity 112 can be directly connected to the side wall cavity 113 and the water passage 311 respectively; the first water ring groove 312 faces the third support baffle ring 243 and the fifth support baffle ring 245. The four support retaining rings 244 enable the central cavity 115 to communicate with the sewage discharge cavity 114 through the first water flow ring groove 312, and the connection between the first piston body 31 and the second piston body 32 faces the water outlet cavity 116, so that the water inlet cavity 112 and the water outlet cavity 116 can be communicated through the water flow channel 311; at the same time, the second water flow ring groove 321 is located on the side of the seventh support retaining ring 247 away from the sixth support retaining ring 246, so that the outer periphery of the end of the second piston body 32 close to the first piston body 31 respectively abuts against the sixth support retaining ring 246 and the seventh support retaining ring 247, thereby blocking the water injection and salt absorption cavity 117.

[0117] Figure 8 This is a simplified schematic diagram of the soft water valve in forward flush mode. The arrows in the figure indicate the direction of water flow through the soft water valve in forward flush mode. Therefore, in forward flush mode, the water flow path is as follows: raw water flows through the water inlet channel 101 into the water inlet chamber 112. The hard water in the water inlet chamber 112 is divided into two parts. One part flows through the water flow channel 311 to the water outlet chamber 116 and exits the soft water valve through the water outlet channel 105. The other part flows into the side wall chamber 113 and flows through the side wall channel 102 into the soft water tank 200 to clean the soft water tank 200. The cleaned wastewater then flows through the central channel 104, the central chamber 115, the sewage chamber 114, and the sewage channel 103 in sequence to exit the soft water valve, completing the forward flush of the soft water tank 200.

[0118] See also Figure 3 、 Figure 5 and Figure 9In an embodiment of the present invention, the multiple water channel modes include a backwash mode. In the backwash mode, the piston 3 moves to the backwash position. At this time, the first piston body 31 abuts against the second support baffle ring 242 and the fourth support baffle ring 244 respectively to block the connection between the water inlet chamber 112 and the side wall chamber 113, and the connection between the sewage chamber 114 and the central chamber 115; the first water flow ring groove 312 faces the third support baffle ring 243, so that the side wall chamber 113 is connected to the sewage chamber 114 through the first water flow ring groove 312, and the connection between the first piston body 31 and the second piston body 32 faces the central chamber 115, so that the side wall chamber 113 is connected to the water outlet chamber 116, and the water flow channel 311 is connected to the water outlet chamber 116. And because the first piston body 31 does not abut against the first support baffle ring 241, the water inlet chamber 112 and the water outlet chamber 116 can be connected through the water passage 311; at the same time, the second water passage groove 321 faces the water injection and salt absorption chamber 117, so that the second piston body 32 abuts against the sixth support baffle ring 246 and the seventh support baffle ring 247 on opposite sides of the second water passage groove 321, thereby blocking the water injection and salt absorption chamber 117.

[0119] Figure 9 This is a simplified schematic diagram of the soft water valve in backwash mode. The arrows in the figure indicate the direction of water flow in the backwash mode. Therefore, in backwash mode, the water flow path is as follows: raw water flows through the water inlet channel 101 into the water inlet chamber 112, and then flows through the water passage 311 to the water outlet chamber 116. Within the water outlet chamber 116, it is divided into two parts. One part is discharged from the soft water valve through the water outlet channel 105. The other part flows back to the center chamber 115 and flows into the soft water tank 200 through the center channel 104 to clean the soft water tank 200. The cleaned wastewater is discharged from the soft water valve through the side wall channel 102, the side wall chamber 113, the sewage chamber 114, and the sewage channel 103, completing the backwash of the soft water valve.

[0120] In addition, since unsoftened hard water can flow out of the softening valve through the connected water inlet chamber 112 and water outlet chamber 116, a switch structure can be set at the water outlet channel 105 to facilitate the user to choose whether to discharge the unsoftened hard water out of the water softener.

[0121] See also Figure 3 、 Figure 5 and Figure 10In an embodiment of the present invention, the multiple waterway modes include a downstream regeneration mode. In the downstream regeneration mode, the piston 3 moves to the downstream regeneration position. At this time, the first piston body 31 abuts against the second support ring 242, the third support ring 243, and the fifth support ring 245, respectively, thereby blocking the communication between the water inlet chamber 112 and the sidewall chamber 113, the communication between the sidewall chamber 113 and the sewage chamber 114, and the communication between the central chamber 115 and the water outlet chamber 116. At the same time, the first water flow annular groove 312 faces the fourth support ring 244, allowing the central chamber 115 to communicate with the sewage chamber 114 through the first water flow annular groove 312. Because the first piston body 31 does not abut against the first support baffle ring 241, and the connection between the first piston body 31 and the second piston body 32 faces the water outlet chamber 116, the water inlet chamber 112 and the water outlet chamber 116 can be connected through the water passage 311; at the same time, the second piston body 32 abuts against the sixth support baffle ring 246 to block the conduction between the water outlet chamber 116 and the water injection and salt absorption chamber 117, and the second water flow ring groove 321 faces the seventh support baffle ring 247, so that the water injection and salt absorption chamber 117 is connected to the bypass channel 14.

[0122] Figure 10 This is a simplified structural diagram of the soft water valve in the downstream regeneration mode. The direction indicated by the arrow in the figure is the direction of water flow in the downstream regeneration mode. Therefore, in the downstream regeneration mode, the flow path of the water flow is as follows: the salt water in the salt tank 300 flows into the bypass channel 14 through the water injection and salt absorption channel 106 and the water injection and salt absorption chamber 117 in sequence; at the same time, the raw water flows into the water inlet chamber 112 through the water inlet channel 101, and the water flow in the water inlet chamber 112 is divided into two parts, one part flows to the water outlet chamber 116 through the water flow channel 311, and is discharged from the soft water valve through the water outlet channel 105; the other part flows to the downstream salt absorption channel 12 to trigger the downstream salt absorption channel 12 The ejector 4 inside produces a siphon effect, causing the brine in the bypass flow channel 14 to be sucked into the downstream salt absorption channel 12, to the siphon chamber 433 and the mixing chamber 432 of the ejector 4, and then to flow to the side wall chamber 113, and enter the soft water tank 200 through the side wall channel 102, so as to regenerate the soft water medium in the soft water tank 200; the regenerated wastewater is discharged from the soft water valve in turn through the central channel 104, the central cavity 115, the sewage cavity 114 and the sewage channel 103, thereby realizing the downstream regeneration of the soft water valve.

[0123] See also Figure 3 、 Figure 5 and Figure 11In an embodiment of the present invention, the multiple waterway modes include a countercurrent regeneration mode. In the countercurrent regeneration mode, the piston 3 moves to the countercurrent regeneration position. At this time, the first piston body 31 abuts the second support ring 242, the fourth support ring 244, and the fifth support ring 245, respectively, thereby blocking the communication between the water inlet chamber 112 and the sidewall chamber 113, the communication between the central chamber 115 and the sewage chamber 114, and the communication between the central chamber 115 and the water outlet chamber 116. At the same time, the first water flow annular groove 312 faces the third support ring 243, allowing the sidewall chamber 113 to communicate with the sewage chamber 114 through the first water flow annular groove 312. Because the first piston body 31 does not abut against the first support baffle ring 241, and the connection between the first piston body 31 and the second piston body 32 faces the water outlet chamber 116, the water inlet chamber 112 and the water outlet chamber 116 can be connected through the water passage 311; at the same time, the second piston body 32 abuts against the sixth support baffle ring 246 to block the conduction between the water outlet chamber 116 and the water injection and salt absorption chamber 117, and the second water flow ring groove 321 faces the seventh support baffle ring 247, so that the water injection and salt absorption chamber 117 is connected to the bypass channel 14.

[0124] Figure 11 This is a simplified structural diagram of the soft water valve in reverse regeneration mode. The direction indicated by the arrow in the figure is the direction of water flow in the reverse regeneration mode. Therefore, in the reverse regeneration mode, the flow path of the water flow is as follows: the salt water in the salt tank 300 flows into the bypass channel 14 through the water injection and salt absorption channel 106 and the water injection and salt absorption chamber 117 in sequence; at the same time, the raw water flows into the water inlet chamber 112 through the water inlet channel 101 and flows to the water outlet chamber 116 through the water passage 311. The water flow in the water outlet chamber 116 is divided into two parts, one part is discharged from the soft water valve through the water outlet channel 105; the other part flows to the reverse salt absorption channel 13 to trigger the reverse salt absorption channel 13 The ejector 4 inside produces a siphon effect, causing the brine in the bypass flow channel 14 to be sucked into the countercurrent salt absorption channel 13, to the siphon chamber 433 and the mixing chamber 432 of the ejector 4, and then to flow to the central cavity 115, and pass into the soft water tank 200 through the central channel 104, so as to regenerate the soft water medium in the soft water tank 200; the regenerated wastewater is discharged from the soft water valve in turn through the side wall channel 102, the side wall cavity 113, the sewage cavity 114 and the sewage channel 103, thereby realizing the countercurrent regeneration of the soft water valve.

[0125] Specifically, in an embodiment of the present invention, a water injection hole 1174 and a salt absorption hole 1173 are provided on the wall of the water injection and salt absorption chamber 117. The water injection hole 1174 is connected to the water injection and salt absorption channel 106, and the salt absorption hole 1173 is connected to the bypass flow channel 14. The water injection hole 1174 and the salt absorption hole 1173 are respectively arranged on opposite sides of a support baffle ring 24. It can be understood that, as Figure 3As shown, the water injection and salt absorption chamber 117 is divided into a first sub-chamber 1171 and a second sub-chamber 1172 by the seventh support ring 247. The second sub-chamber 1172 is provided on the side of the first sub-chamber 1171 away from the water outlet chamber 116. The first sub-chamber 1171 can be communicated with the water outlet chamber 116 and can also be communicated with the water injection and salt absorption channel 106 through the water injection hole 1174. The second sub-chamber 1172 can be communicated with the bypass flow channel 14 through the salt absorption hole 1173, thereby controlling the first sub-chamber 1171 and the second sub-chamber 1172. The connection between the first and second sub-cavities 1171 and 1172 establishes communication between the bypass channel 14 and the water injection and salt absorption channel 106. In either the forward or reverse regeneration mode, the second water annular groove 321 faces the seventh support ring 247, thereby connecting the first and second sub-cavities 1171 and 1172 via the second water annular groove 321. Consequently, the brine within the salt tank 300 flows into the bypass channel 14 sequentially through the water injection hole 1174, the first sub-cavity 1171, the second water annular groove 321, the second sub-cavity 1172, and the salt absorption hole 1173. To ensure the amount of salt absorbed, the number of salt absorption holes 1173 can be one or more, or the inner diameter of each salt absorption hole 1173 can be slightly smaller than the inner diameter of the water injection and salt absorption cavity 117.

[0126] See also Figure 18 and Figure 19 In one embodiment, the grille assembly 2 includes a plurality of grille units 21 sequentially spliced and arranged along the axial direction of the valve chamber 11, and an outer sealing ring groove 211 for installing the outer sealing ring 22 is spliced between two adjacent grille units 21; the grille assembly 2 has a pre-installed state, in which a widened gap 212 can be formed between two adjacent grille units 21, and the width of the widened gap 212 is smaller than the cross-sectional diameter of the outer sealing ring 22;

[0127] The soft water valve also includes a drive mounting seat 5 that covers the cavity opening of the valve cavity 11; when the cavity opening of the valve cavity 11 is in an open state, the grille assembly 2 is installed to the valve cavity 11 in the pre-installed state, and the widened gap 212 widens the outer sealing ring groove 211 to provide a larger deformation space for the outer sealing ring 22; when the drive mounting seat 5 covers the cavity opening of the valve cavity 11, the drive mounting seat 5 abuts against the grille assembly 2 to eliminate the widened gap 212, so that the outer sealing ring 22 abuts against the cavity wall of the valve cavity 11.

[0128] Specifically, multiple grille units 21 are spliced together in sequence. To facilitate the assembly of the grille assembly 2, during actual assembly, the grille units 21 are often spliced together first, and then the grille assembly 2 is installed as a whole into the valve cavity 11. That is, the multiple grille units 21 and the outer sealing ring 22 are assembled first, and then the grille assembly 2 is installed into the valve cavity 11. Therefore, if the multiple grille units 21 are directly spliced into place, the outer sealing ring 22 is clamped by the outer sealing ring groove 211. In order to ensure the sealing strength, the outer sealing ring 22 and the valve cavity 11 usually adopt an interference fit. As a result, when the grille assembly 2 is actually installed, the friction between the outer sealing ring 22 and the cavity wall of the valve cavity 11 is relatively large, making it difficult to insert the grille assembly 2 into the valve cavity 11. It is also easy to cause the outer sealing ring 22 to shift, which increases the difficulty of installing the grille assembly 2.

[0129] The grille assembly 2 in the present scheme is installed into the valve cavity 11 in a pre-installed state. The existence of the widened gap 212 can further increase the width of the outer sealing ring groove 211 along the axial direction of the valve cavity 11, thereby providing a larger deformation space for the outer sealing ring 22, thereby reducing the friction between the outer sealing ring 22 and the cavity wall of the valve cavity 11 during the assembly process, facilitating the installation of the grille assembly 2 into the valve cavity 11, and reducing the probability of the outer sealing ring 22 falling out of the outer sealing ring groove 211; and the existence of the widened gap 212 can also further increase the radial depth of the outer sealing ring groove 211 along the valve cavity 11, thereby allowing more of the outer sealing ring 22 to be installed into the outer sealing ring groove 211, helping to reduce the outer diameter of the grille assembly 2 at the outer sealing ring 22, thereby reducing the friction between the outer sealing ring 22 and the cavity wall of the valve cavity 11, thereby further facilitating the installation of the grille assembly 2 into the valve cavity 11. The width of the widened gap 212 is smaller than the cross-sectional diameter of the outer sealing ring 22, thereby reducing the possibility of the outer sealing ring 22 being stuck in the widened gap 212 while reducing the difficulty of installing the grille assembly 2. It should be noted that the cross-sectional diameter of the outer sealing ring 22 refers to the width of the outer sealing ring 22 in the axial direction.

[0130] When the drive mounting seat 5 seals the opening of the valve cavity 11, the drive mounting seat 5 abuts the grille assembly 2. As a result, the widened gap 212 is eliminated under the pressing action of the drive mounting seat 5. The depth and width of the outer sealing ring groove 211 are reduced, allowing the two adjacent grille units 21 to clamp the outer sealing ring groove 211 together, thereby causing the outer sealing ring 22 to expand radially, so that the outer sealing ring 22 abuts against the cavity wall of the valve cavity 11, thereby ensuring the sealing effect between the grille assembly 2 and the cavity wall of the valve cavity 11. It can be seen that this solution not only facilitates the installation of the grille assembly 2, but also ensures the sealing strength between the grille assembly 2 and the cavity wall of the valve cavity 11.

[0131] The plurality of grille units 21 can be connected by snapping. For example, one of the two adjacent sides of two adjacent grille units 21 is provided with a snap hole, and the other is provided with a snap protrusion. In the pre-installed state, the snap protrusion passes through the snap hole and snaps onto the edge of the snap hole.

[0132] See also Figure 10 and Figure 11 In an embodiment of the present invention, the piston 3 includes a first piston 33 and a second piston 34, both of which are provided with a first water-passing annular groove 312. The axial position of the first water-passing annular groove 312 on the first piston 33 is different from the axial position of the second piston 34. Either the first piston 33 or the second piston 34 is installed in the grille assembly 2.

[0133] The multiple water channel modes include a regeneration water channel mode. When the first piston 33 is installed in the grille assembly 2, in the regeneration water channel mode, the first water ring groove 312 connects the central cavity 115 and the sewage cavity 114 to achieve downstream regeneration; when the second piston 34 is installed in the grille assembly 2, in the regeneration water channel mode, the first water ring groove 312 connects the side wall cavity 113 and the sewage cavity 114 to achieve countercurrent regeneration.

[0134] That is, the soft water valve in this solution can be either a downstream regeneration valve or a reverse regeneration valve. From the structural perspective of the soft water valve, the downstream regeneration valve and the reverse regeneration valve only have different structures of the first piston 33 and the second piston 34, while the valve body 1, the grid assembly 2 and other structures are exactly the same. That is, the downstream regeneration valve and the reverse regeneration valve can share the valve body 1 and the grid assembly 2 and other structures. Therefore, in actual production, the downstream regeneration valve and the reverse regeneration valve can be realized by producing the same valve body 1, thereby saving the cost of a set of molds, which helps to save the processing cost of the soft water valve. In actual use, the corresponding piston 3 is selected, and the ejector 4, the plug cover 71 and the plug structure are selectively set and installed for the downstream salt absorption channel 12 of the downstream regeneration valve and the reverse salt absorption channel 13 of the reverse regeneration valve to meet the user's usage needs.

[0135] Specifically, the only difference between the first piston 33 and the second piston 34 is that the axial position of the first water ring groove 312 on the first piston 33 is different from the axial position on the second piston 34, that is, the partial water flow levels on the first piston 33 and the second piston 34 are different. Therefore, during the actual production of the piston 3, only the position of the first water ring groove 312 needs to be adjusted to simultaneously process the downstream regeneration valve and the reverse regeneration valve. Compared with the prior art, the structures of the downstream regeneration valve and the reverse regeneration valve are processed separately and then assembled separately. This solution can not only improve the processing efficiency, but also save the cost of a set of molds, thereby reducing the cost of the soft water valve.

[0136] Due to the change in the position of the first water-passing annular groove 312, in the downstream regeneration mode, the first water-passing annular groove 312 connects the central cavity 115 and the sewage cavity 114, allowing the wastewater generated by the regeneration of the soft water medium in the soft water pipe to flow out through the central cavity 115 and the sewage cavity 114 in sequence, and the corresponding salt water enters the soft water tank 200 through the side wall cavity 113. In the reverse regeneration mode, the first water-passing annular groove 312 connects the side wall cavity 113 and the sewage cavity 114, allowing the wastewater generated by the regeneration of the soft water medium in the soft water pipe to flow out of the soft water valve in sequence through the side wall cavity 113 and the sewage cavity 114, and the corresponding salt water enters the soft water tank 200 through the central cavity 115. In other waterway modes, the waterway flow directions of the downstream and reverse regeneration valves are set to be the same.

[0137] See also Figures 15 to 17 In an embodiment of the present invention, the valve body 1 comprises a valve body 15 and a valve base 16, which are assembled into separate parts. The valve base 16 is provided with a soft tank interface 161 for connecting to the soft water tank 200. On one side of the valve body 15 near the valve base 16, a first dividing rib 151 is provided, which cooperates with the grille assembly 2 to separate the multiple water passage chambers 111. The valve base 16 is provided with a second dividing rib 162 corresponding to each first dividing rib 151. The first dividing rib 151 has a first rib surface 1511 and a second rib surface 1512, which are radially opposed to each other within the valve chamber 11. The grille assembly 2 is in sealing contact with the first rib surface 1511, and the second dividing rib 162 is fixedly connected to the second rib surface 1512. Optionally, the valve base 16 and the valve body 15 can be connected by hot plate welding.

[0138] Specifically, the soft tank interface 161 is provided on the valve base 16, and the soft water tank 200 is installed on the outside of the soft water joint. In order to facilitate the communication between the valve cavity 11 and the soft water tank 200, the side wall channel 102 and the center channel 104 are provided on the valve base 16, and the downstream salt absorption channel 12, the upstream salt absorption channel 13, the water inlet channel 101, the water outlet channel 105 and the water injection salt absorption channel 106 are formed on the valve body 15, thereby ensuring the circumferential continuity of the water inlet channel 101, the water outlet channel 105 and the water injection salt absorption channel 106, thereby reducing the possibility of water leakage. The bypass channel 14 can be formed by splicing the valve body 15 and the valve base 16, which facilitates the processing and forming of the bypass channel 14; of course, in other embodiments, the downstream salt absorption channel 12, the countercurrent salt absorption channel 13, the water inlet channel 101, the water outlet channel 105 and the water injection salt absorption channel 106 can be only partially provided on the valve body 15, and the other part is formed by splicing the valve body 15 and the valve base 16 and / or provided on the valve base 16; or, the downstream salt absorption channel 12, the countercurrent salt absorption channel 13, the water inlet channel 101, the water outlet channel 105 and the water injection salt absorption channel 106 are all formed by splicing the valve body 15 and the valve base 16; or, the downstream salt absorption channel 12, the countercurrent salt absorption channel 13, the water inlet channel 101, the water outlet channel 105 and the water injection salt absorption channel 106 are all provided on the valve base 16.

[0139] In addition, the valve body 15 is provided with a first dividing rib 151 on the side near the valve base 16 for separating multiple water flow chambers 111, and the first rib surface 1511 of the first dividing rib 151 abuts against the grille assembly 2, that is, each first dividing rib 151 abuts against a supporting retaining ring 24 of the grille assembly 2, so that the outer periphery of the grille assembly 2 only abuts against the valve body 15, thereby eliminating the impact of the abutment between the outer periphery of the grille assembly 2 and the inner periphery of the valve cavity 11 on the splicing of the valve body 15 and the valve base 16, reducing the probability of cracking at the splicing of the valve body 15 and the valve base 16, that is, reducing the probability of the valve body 1 being bulged, thereby increasing the service life of the soft water valve. In addition, the presence of the first dividing rib 151 can further increase the cross-sectional area of the valve cavity 11, which helps to increase the water flow rate, so that the flux of the soft water valve is not less than 6m 3 / h, further realizing small volume and large flux.

[0140] In addition, the second separating rib 162 is fixedly connected to the second rib surface 1512, which can increase the connection area between the valve base 16 and the valve body 15, thereby increasing the connection strength between the valve body 15 and the valve base 16, so as to further reduce the probability of the valve body 1 being expanded and exploded, thereby increasing the service life of the soft water valve.

[0141] Optionally, the valve body 1 is further provided with a mixing water channel, one end of which is connected to the water inlet chamber 112 and / or the water inlet channel 101, and the other end is connected to the water outlet chamber 116 and / or the water outlet channel 105; the soft water valve also includes a mixing water valve arranged corresponding to the mixing water channel; thus, in the water production mode, when the mixing water valve is opened, a portion of the raw water can flow directly from the water inlet channel 101 and / or the water inlet chamber 112 through the mixing water channel into the water outlet chamber 116 and / or the water outlet channel 105, thereby mixing with the softened soft water (sodium ions will increase during the softening process), and then transported to the external water outlet pipe to reduce the phenomenon of excessive sodium ions, thereby meeting the low concentration requirements of sodium ions in certain regions (such as Europe). Optionally, the joint surface between the valve body 15 and the valve base 16 passes through the mixing water channel to facilitate the formation of the mixing water channel.

[0142] The present invention also proposes a water softener, which includes a water softener valve. The specific structure of the water softener refers to the above embodiment. Since this water softener adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0143] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the scope of protection of the present invention.

Claims

1. A soft water valve, characterized in that: include: The valve body is provided with a valve cavity, a downstream salt absorption channel and a reverse salt absorption channel. The valve cavity includes a plurality of water passage cavities, and the plurality of water passage cavities include a water inlet cavity, a water outlet cavity, a side wall cavity, a central cavity, and a water injection and salt absorption cavity. The downstream salt absorption channel includes a first downstream channel connected to the water inlet cavity and a second downstream channel connected to the side wall cavity. The reverse salt absorption channel includes a first reverse flow channel connected to the water outlet cavity and a second reverse flow channel connected to the central cavity. a plugging cover mounted on the valve body, wherein the plugging cover and the valve body enclose a transfer channel, wherein the transfer channel is a partial flow channel in the downstream salt absorption channel or the countercurrent salt absorption channel; an ejector having a siphon cavity, the ejector being connected and installed in one of the second downstream channel and the second upstream channel, and communicating with the water injection and salt absorption cavity through the siphon cavity; The plug structure is used to block the other of the downstream salt absorption channel and the countercurrent salt absorption channel.

2. The soft water valve according to claim 1, characterized in that The valve body is further provided with a bypass flow channel, which is connected with the second downstream channel and the second upstream channel, and is also connected with the water injection and salt absorption cavity.

3. The soft water valve according to claim 1, characterized in that The valve body comprises a valve main body, and the valve main body has a protruding mounting protrusion; The mounting protrusion includes a first mounting protrusion provided with the first downstream channel and the second downstream channel side by side, and a second mounting protrusion provided with the first upstream channel and the second upstream channel side by side; The blocking cover is mounted on one of the first mounting protrusion and the second mounting protrusion, and the plug structure is arranged on the other one.

4. The soft water valve according to claim 3, characterized in that The blocking cover is provided with a mounting groove adapted to the mounting protrusion, and a limiting protrusion is provided on the bottom wall of the mounting groove. The limiting protrusion is located between the blocking cover and the mounting protrusion, so that the blocking cover and the mounting protrusion are enclosed to form the transfer channel.

5. The soft water valve according to claim 4, characterized in that: The ejector includes an ejector body and an ejector limiting portion. The ejector body is arranged in the second downstream channel or the second upstream channel. The ejector limiting portion is exposed outside the mounting protrusion and abuts against the limiting protrusion.

6. The soft water valve according to claim 3, characterized in that: The soft water valve further includes a mounting pin, the blocking cover is provided with a through hole for the mounting pin to pass through, the mounting protrusion is provided with a pin slot, the mounting pin passes through the through hole and is confined in the pin slot; And / or, the mounting protrusion is further provided with a sealing ring groove, the sealing ring is embedded in the sealing ring groove, and the side away from the sealing ring groove abuts against the groove side wall of the blocking cover.

7. The soft water valve according to claim 1, characterized in that The ejector comprises an ejector body, and the ejector body comprises a guide section, a mixing section and a connecting section; An ejector limiter is provided outside the guide section, and a guide cavity connected to the transfer channel is formed inside the guide section. A mixing cavity connected to the side wall cavity or the central cavity is provided inside the mixing section. The guide section and the mixing section are spaced apart and connected and enclosed by the connecting section to form the siphon cavity. The siphon cavity is connected to the guide cavity and the mixing cavity, and is also connected to the water injection and salt absorption cavity.

8. The soft water valve according to claim 7, characterized in that The guide section is provided with a first annular groove, the first sealing ring is provided in the first annular groove, and a side away from the first annular groove abuts against a flow channel wall of the second downstream channel or the second upstream channel; And / or, the mixing section is provided with a second annular groove, the second sealing ring is provided in the second annular groove, and a side away from the second annular groove abuts against a flow channel wall of the second downstream channel or the second countercurrent channel.

9. The soft water valve according to claim 1, characterized in that The soft water valve further includes a filter screen, which is arranged in the first downstream channel or the first upstream channel.

10. The soft water valve according to claim 9, characterized in that The filter includes a filter body and a filter limiting portion arranged outside the filter body. The filter body is sealed with the first downstream channel or the first upstream channel. The filter limiting portion is exposed outside the valve body to cooperate with the blocking cover to form the transfer channel.

11. The soft water valve according to claim 1, characterized in that The plug structure is configured as a thin wall formed on the valve body, and the thin wall is provided in the downstream salt absorption channel and / or the countercurrent salt absorption channel; Alternatively, the plug structure is configured as a sealing plug, and the sealing plug is used to block the downstream salt absorption channel or the countercurrent salt absorption channel.

12. The water softener valve according to any one of claims 1 to 11, characterized in that: The soft water valve further comprises a grille assembly disposed in the valve cavity and a piston disposed in the grille assembly, wherein the grille assembly sequentially divides the valve cavity into a plurality of water passage chambers along its axial direction, wherein the plurality of water passage chambers comprise the water inlet chamber, the side wall chamber, the sewage discharge chamber, the central chamber, the water outlet chamber, and the water injection and salt absorption chamber, wherein the water inlet chamber, the side wall chamber, the sewage discharge chamber, the central chamber, the water outlet chamber, and the water injection and salt absorption chamber are sequentially disposed along the axial direction of the valve cavity; The soft water valve has multiple water path modes, and the piston moves along the axial direction of the valve cavity to switch the soft water valve between the multiple water path modes.

13. The soft water valve according to claim 12, characterized in that The grille assembly includes a plurality of grille units sequentially spliced and arranged along the axial direction of the valve cavity, with an outer sealing ring groove for mounting an outer sealing ring formed between two adjacent grille units; the grille assembly has a pre-installed state, in which a widened gap can be formed between two adjacent grille units, and the width of the widened gap is smaller than the cross-sectional diameter of the outer sealing ring; The soft water valve further includes a drive mounting seat for sealing the valve cavity opening; when the valve cavity opening is in an open state, the grille assembly is mounted to the valve cavity in the pre-installed state, and the widened gap widens the outer sealing ring groove to provide a larger deformation space for the outer sealing ring; When the drive mounting seat covers the cavity opening of the valve cavity, the drive mounting seat abuts against the grid assembly to eliminate the widened gap, so that the outer sealing ring abuts against the cavity wall of the valve cavity.

14. The soft water valve according to claim 12, wherein: The piston includes a first piston and a second piston, both of which are provided with a first water-passing ring groove. The axial position of the first water-passing ring groove on the first piston is different from the axial position of the first water-passing ring groove on the second piston. Either the first piston or the second piston is installed in the grille assembly. The multiple water channel modes include a regeneration water channel mode. When the first piston is installed in the grille assembly, in the regeneration water channel mode, the first water ring groove connects the central cavity and the sewage discharge cavity to achieve downstream regeneration; when the second piston is installed in the grille assembly, in the regeneration water channel mode, the first water ring groove connects the side wall cavity and the sewage discharge cavity to achieve countercurrent regeneration.

15. The soft water valve according to claim 12, wherein: The valve body includes a valve body and a valve base that are spliced together. The valve base is provided with a soft tank interface for connecting to a soft water tank. The valve body is provided with a first dividing rib on one side close to the valve base, which cooperates with the grille assembly to separate a plurality of water flow chambers. The valve base is provided with a second dividing rib corresponding to each of the first dividing ribs. The first dividing rib has a first rib surface and a second rib surface that are opposite in the radial direction of the valve cavity. The grille assembly is sealed and abutted against the first rib surface, and the second dividing rib is fixedly connected to the second rib surface.

16. A water softener, characterized in that: The invention comprises the soft water valve according to any one of claims 1 to 15.

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