Regeneration piston assembly and water softener

Abstract

The invention discloses a regeneration piston assembly and a water softener, and relates to the technical field of water softeners, the regeneration piston assembly comprises a cavity and a regeneration piston, the cavity is provided with a regeneration chamber, the wall of the regeneration chamber is provided with a water inlet, a water outlet and a salt liquid inlet, the water inlet is communicated with an external water source, the water outlet is communicated with a resin tank, and the salt liquid inlet is communicated with a salt box; the regeneration piston is movably arranged in the regeneration cavity so as to switch a regeneration mode and a water production mode, and the regeneration piston can be switched from the regeneration mode to the water production mode after being subjected to the water inlet pressure effect of an external water source. According to the technical scheme provided by the invention, the operation convenience of the regeneration mode of the water softener can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water softeners, and particularly to a regeneration piston assembly and a water softener. Background Art

[0002] The water softener has a regeneration mode. In the regeneration mode, the brine in the salt tank flows into the resin tank to react with the resin particles, so that the resin particles can be restored to a state with softening ability. In the related art, the opening and closing operations of the regeneration mode are relatively cumbersome, resulting in a poor user experience of the water softener. Summary of the Invention

[0003] The main object of the present invention is to propose a regeneration piston assembly and a water softener, aiming to improve the operation convenience of the regeneration mode of the water softener.

[0004] To achieve the above object, the regeneration piston assembly proposed by the present invention includes:

[0005] A cavity provided with a regeneration chamber. The chamber wall of the regeneration chamber is provided with a water inlet, a water outlet and a brine inlet. The water inlet is connected to an external water source, the water outlet is connected to the resin tank, and the brine inlet is connected to the salt tank;

[0006] A regeneration piston movably disposed in the regeneration chamber to switch between the regeneration mode and the water production mode. After being acted on by the water inlet pressure of the external water source, the regeneration piston can switch from the regeneration mode to the water production mode.

[0007] In an embodiment, the regeneration chamber extends in a first direction. The regeneration piston includes a piston moving along the first direction. The water inlet and the water outlet are misaligned in the first direction. The regeneration chamber has a first side and a second side respectively disposed on opposite sides of the piston, and the water inlet is located on the first side;

[0008] In the water production mode, at least part of the water outlet is exposed on the first side. The water outlet is communicated with the water inlet and is separated from the brine inlet;

[0009] In the regeneration mode, at least part of the water outlet is exposed on the second side. The water outlet is communicated with the brine inlet and is separated from the water inlet.

[0010] In an embodiment, the brine inlet is located on the first side. The regeneration piston is provided with a liquid guide channel, a liquid guide inlet and a liquid guide outlet communicating with the liquid guide channel. The liquid guide inlet is communicated with the brine inlet, and the liquid guide outlet is communicated with the water outlet. In the water production mode, the liquid guide inlet and / or the liquid guide outlet are / is blocked; in the regeneration mode, the liquid guide inlet and the liquid guide outlet are conducted.

[0011] In one embodiment, the regeneration piston also includes a first conduit connected to the piston and located on the first side, the liquid conduction channel is at least partially formed on the piston and the first conduit, the regeneration chamber includes a piston chamber and a conduit chamber that are connected, the cavity wall of the piston chamber is provided with the water inlet and the water outlet, the cavity wall of the conduit chamber is provided with the saline inlet, the piston is provided in the piston chamber, and the first conduit is provided with the liquid conduction inlet on the end extending into the conduit chamber.

[0012] In one embodiment, the end face of the first conduit is closed, the liquid inlet is provided on the side wall of the first conduit, and the saline inlet is provided on the side wall of the conduit chamber. In the water production mode, the liquid inlet and the saline inlet are staggered in the first direction, and in the regeneration mode, the liquid inlet and the saline inlet are overlapped in at least a portion of the first direction.

[0013] In one embodiment, a first sealing ring is provided on the outer periphery of the first conduit, the liquid inlet is located on a side of the first sealing ring close to the piston chamber, and in the water production mode, the outer periphery of the first sealing ring is sealably connected to the side wall of the conduit chamber.

[0014] In one embodiment, a second sealing ring is provided on the outer periphery of the first conduit, the liquid inlet is located on a side of the second sealing ring away from the piston chamber, and the outer periphery of the second sealing ring is seal-connected to the side wall of the conduit chamber to separate the liquid inlet from the water inlet.

[0015] In one embodiment, the regeneration piston also includes a second conduit connected to the piston and located on the second side, the second conduit is provided with the liquid outlet, the liquid channel is partially formed on the second conduit, and the liquid outlet is connected to the water outlet in both the water production mode and the regeneration mode.

[0016] In one embodiment, a catheter cavity is convexly provided inwardly on the end surface of the piston chamber, the catheter cavity is arranged in the catheter cavity, and the axis of the water inlet is arranged outside the catheter cavity.

[0017] In one embodiment, the water outlet comprises a plurality of water outlet grid holes, and the plurality of water outlet grid holes are distributed at intervals along the circumference of the piston.

[0018] In one embodiment, the regeneration piston assembly further comprises a button connected to the piston, wherein the button is at least partially exposed outside the cavity.

[0019] In one embodiment, the cavity is provided with a mounting hole communicating with the regeneration chamber. The regeneration piston assembly further includes a plug cover disposed in the mounting hole. The plug cover is provided with a guiding hole communicating with the regeneration chamber. The key includes a pressing disk and a connecting column connected to each other. One end of the connecting column away from the pressing disk passes through the guiding hole and is connected to the piston.

[0020] In one embodiment, the guiding hole includes a disk hole section and a column hole section communicating with each other. The pressing disk can be received in the disk hole section. The connecting column movably penetrates through the column hole section and is in sealing cooperation with the hole wall surface of the column hole section.

[0021] In one embodiment, the regeneration piston further includes a second conduit connected to the piston and located on the second side. One of the second conduit and the connecting column is provided with a clamping projection, and the other is provided with a clamping hole. The clamping projection is clamped in the clamping hole.

[0022] The present invention further provides a water softener, which includes:

[0023] A resin tank, which is provided with a resin chamber and a water inlet communicating with the resin chamber;

[0024] A salt box, which is provided with a salt chamber and a salt solution outlet communicating with the salt chamber; and

[0025] The aforementioned regeneration piston assembly, wherein the water outlet of the cavity communicates with the water inlet, and the salt solution inlet communicates with the salt solution outlet.

[0026] In one embodiment, the water softener further includes a water circuit board disposed at the water inlet. The water circuit board is provided with a water passing channel, a water passing inlet and a water passing outlet communicating with the water passing channel. The water passing inlet communicates with an external water source, the water passing outlet communicates with the water inlet, the cavity is disposed on the water circuit board, and the regeneration chamber communicates with the water passing channel.

[0027] In one embodiment, the water circuit board integrally forms the cavity. The water passing channel includes the regeneration chamber. The water inlet communicates with the water passing inlet, and the water outlet communicates with the water passing outlet.

[0028] In one embodiment, the water circuit board is disposed above the resin tank, and the salt box is disposed above the water circuit board. The salt solution in the salt box flows into the water circuit board and the resin tank by gravity.

[0029] In the technical solution of the present invention, due to the characteristic that the regeneration piston is under the action of the water inlet pressure of the external water source and will switch from the position corresponding to the regeneration mode to the position corresponding to the water production mode, that is, the regeneration piston has the characteristic of automatically resetting during water use, without the user manually operating the reset of the regeneration piston, thus the problem of cumbersome opening and closing operations of the regeneration mode can be solved, and the operation convenience of the regeneration mode of the water softener can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0031] Figure 1 Structural schematic diagram of an embodiment of a water softener provided by the present invention;

[0032] Figure 2 is Figure 1 Cross-sectional view of the shown structure;

[0033] Figure 3 is Figure 1 Partial cross-sectional view of the shown structure at the regeneration piston from a side view angle when the water softener is in the water production mode;

[0034] Figure 4 is Figure 3 Another partial cross-sectional view of the shown structure at the regeneration piston from a side view angle when the water softener is in the regeneration mode;

[0035] Figure 5 is Figure 1 Another partial cross-sectional view of the shown structure at the regeneration piston from a top view angle when the water softener is in the water production mode;

[0036] Figure 6 is Figure 5 Another partial cross-sectional view of the shown structure at the regeneration piston from a side view angle when the water softener is in the regeneration mode;

[0037] Figure 7 is Figure 1 Assembly schematic diagram of the shown water circuit board and the regeneration piston assembly;

[0038] Figure 8 is Figure 7 Structural schematic diagram of the shown water circuit board;

[0039] Figure 9 is Figure 8 Side view of the shown water circuit board;

[0040] Figure 10 is Figure 8 a sectional view of the water circuit board shown from the front view angle;

[0041] Figure 11 is Figure 8 a sectional view of the water circuit board shown from the left view angle;

[0042] Figure 12 is Figure 8 a sectional view of the water circuit board shown from the right view angle;.

[0043] Figure 13 is Figure 7 an exploded view of the regenerative piston assembly shown;

[0044] Figure 14 is Figure 13 a structural schematic diagram of the piston shown;

[0045] Figure 15 is Figure 14 a sectional view of the piston shown;

[0046] Figure 16 is Figure 13 a structural schematic diagram of the button shown;

[0047] Figure 17 is Figure 13 a structural schematic diagram of the plug cover shown.

[0048] Explanation of the reference numerals in the drawings:

[0049] 100, resin tank; 101, resin cavity; 102, water inlet; 103, water outlet; 104, inlet port; 105, water inlet channel; 120, upper water distributor; 130, side plug cover; 131, plug head;

[0050] 200, salt box; 201, salt cavity; 202, salt solution outlet;

[0051] 300, water circuit board; 301, cavity; 302, water inlet; 303, water outlet; 304, salt solution inlet; 306, water passing channel; 307, water passing inlet; 308, water passing outlet; 309, positioning hole; 310, regeneration chamber; 311, piston chamber; 312, conduit chamber; 313, conduit cavity; 314, mounting hole; 315, first side; 316, second side; 320, cover body; 330, pipe body; 331, first pipe segment; 332, second pipe segment; 333, third pipe segment; 334, fourth pipe segment; 335, water guiding rib;

[0052] 400, regeneration piston; 403, liquid guide channel; 404, liquid guide inlet; 405, liquid guide outlet; 410, piston; 411, piston seal ring; 420, first conduit; 421, first seal ring; 424, second seal ring; 430, second conduit; 431, clamping hole

[0053] 500, button; 510, pressing disc; 520, connecting column; 521, clamping projection; 522, avoidance opening

[0054] 600, plug cover; 610, guiding hole; 611, disc hole section; 612, column hole section; 613, button seal ring

[0055] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0057] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0059] The water softener has different working modes, including water production mode, regeneration mode, etc. In the regeneration mode, the brine in the salt box flows into the resin tank to react with the resin particles, so that the resin particles can be restored to the state with softening ability. In the related art, the opening and closing operations of the regeneration mode are relatively cumbersome, resulting in a poor user experience of the water softener.

[0060] In view of this, the present invention provides a regeneration piston assembly. When the regeneration piston assembly is applied to a water softener, it can solve the problem that the opening and closing operations of the regeneration mode are relatively cumbersome and improve the operation convenience of the regeneration mode of the water softener.

[0061] Please refer to Figures 1 to 4 , in an embodiment of the present invention, the regeneration piston assembly includes a cavity 301 and a regeneration piston 400. Among them, the cavity 301 is provided with a regeneration chamber 310. The chamber wall of the regeneration chamber 310 is provided with a water inlet 302, a water outlet 303 and a brine inlet 304. The water inlet 302 is connected to an external water source, the water outlet 303 is connected to the resin tank 100, and the brine inlet 304 is connected to the salt box 200; the regeneration piston 400 is movably arranged in the regeneration chamber 310 to switch between the regeneration mode and the water production mode. After being acted on by the water inlet pressure of the external water source, the regeneration piston 400 can switch from the regeneration mode to the water production mode.

[0062] Please refer to Figure 2 , in the embodiment of the present invention, the resin tank 100 of the water softener is provided with a resin cavity 101, a water inlet 102 communicating with the resin cavity 101 and a water outlet 103. The resin cavity 101 is used to store softening agents such as resin particles. The water inlet 102 is connected to the water outlet 303 of the regeneration chamber 310, and the water outlet 103 is used to supply softened water externally.

[0063] Specifically, in the water production mode, the water inlet 302 is communicated with the water outlet 303. The external water source flows through the regeneration chamber 310 to the water inlet 102 and then into the resin cavity 101. After being softened by the resin particles in the resin cavity 101, it is converted into softened water. The softened water flows out through the water outlet and is supplied externally. At this time, the brine inlet 304 is separated from the water outlet 303. Therefore, the salt box 200 and the resin tank 100 cannot be communicated through the regeneration chamber 310, and the brine cannot enter the resin cavity 101.

[0064] In the regeneration mode, the salt solution inlet 304 is in communication with the water outlet 303. The salt solution in the salt tank 200 flows through the regeneration chamber 310 to the water inlet 102 and then into the resin chamber 101, where the calcium and magnesium ions on the resin particles are replaced to achieve the regeneration function. The wastewater generated by the regeneration function is discharged through the water outlet. At this time, the water inlet 302 is separated from the water outlet 303, and the water inlet valve (such as the mixing valve used in the water heater in the bathroom) connected to the water inlet 104 of the water softener is usually in the closed state. Therefore, the external water source cannot enter the resin tank 100 through the regeneration chamber 310.

[0065] When the regeneration piston 400 is driven to switch from the position corresponding to the self - made water mode to the position corresponding to the regeneration mode, the water softener enters the regeneration mode to utilize the salt solution in the salt tank 200 to achieve the regeneration effect on the resin particles in the resin tank 100. Among them, the regeneration piston 400 can be manually driven by the user or electrically controlled by a driving member such as a motor to switch from the position corresponding to the self - made water mode to the position corresponding to the regeneration mode.

[0066] When the user needs to use the water softener to produce soft water and opens the water inlet valve connected to the water inlet 104 of the water softener, the water inlet pressure of the water inlet 104 is transmitted to the regeneration chamber 310 and acts on the regeneration piston 400. Under the action of the water inlet pressure of the external water source, the regeneration piston 400 will switch from the position corresponding to the regeneration mode to the position corresponding to the water production mode, thus prompting the water softener to automatically return to the water production mode to utilize the resin particles in the resin tank 100 to achieve the effect of generating soft water.

[0067] In the technical solution of the present invention, due to the characteristic that the regeneration piston 400 will switch from the position corresponding to the regeneration mode to the position corresponding to the water production mode under the action of the water inlet pressure of the external water source, that is, the regeneration piston 400 has the characteristic of automatically resetting during water use, there is no need for the user to manually operate the reset of the regeneration piston 400, thus being able to solve the problem that the opening and closing operations of the regeneration mode are relatively cumbersome and improve the operation convenience of the regeneration mode of the water softener.

[0068] It should be noted that the water softener protected by the present invention includes, but is not limited to, central water softeners and end - point water softeners. Among them, the end - point water softener mainly provides soft water for local or individual water - using devices or water outlet terminals to improve the water quality delivered to these water - using devices or water outlet terminals, reduce the impact of hard water on the equipment structure, human body or clothes, and improve the comfort of local water use. Specifically, the water - using devices include, but are not limited to, water heaters, washing machines or humidifiers, etc., and the water outlet terminals include, but are not limited to, shower heads, faucets, etc. For example, the end - point water softener is used in the bathroom scenario, and can make the water from the shower head be soft water to improve the user's water - using comfort. For the convenience of description, the present invention will take the end - point water softener applied to the bathroom as an example for explanation.

[0069] Please refer to Figures 3 to 6 In one embodiment, the regeneration chamber 310 extends in a first direction. The regeneration piston 400 includes a piston 410 that moves in the first direction. The water inlet 302 and the water outlet 303 are misaligned in the first direction. The regeneration chamber 310 has a first side 315 and a second side 316 disposed on opposite sides of the piston 410. The water inlet 302 is located on the first side 315. In the water production mode, at least a part of the water outlet 303 is exposed on the first side 315. The water outlet 303 is in communication with the water inlet 302 and is separated from the brine inlet 304. In the regeneration mode, at least a part of the water outlet 303 is exposed on the second side 316. The water outlet 303 is in communication with the brine inlet 304 and is separated from the water inlet 302. Wherein, the first direction is parallel or nearly parallel to the axial direction of the piston 410. Thus, by using the movement of the piston 410 in the first direction, the water outlet 303 can conduct the water inlet 302 on the first side 315 of the regeneration chamber 310, or the water outlet 303 can conduct the brine inlet 304 on the second side 316 of the regeneration chamber 310. That is, the first side 315 and the second side 316 of the regeneration chamber 310 are respectively used to conduct the water inlet 302 and the brine inlet 304, so as to realize mode switching, with a simple structure and reliable operation.

[0070] Specifically, the piston 410 can move along the extending direction of the regeneration chamber 310. When the piston 410 moves to a position where both the water inlet 302 and the water outlet 303 are at least partially located on the first side 315, the water inlet 302 and the water outlet 303 will be conducted through the space on the first side 315 of the regeneration chamber 310. At this time, the water outlet 303 and the brine inlet 304 are separated. The water softener enters the water production mode. Please refer to Figure 3 and Figure 5 .

[0071] When the piston 410 moves to a position where the water inlet 302 is on the first side 315 and the water outlet 303 is not exposed on the first side 315 at all, the water inlet 302 and the water outlet 303 will be separated by the piston 410. At this time, the water outlet 303 and the brine inlet 304 are conducted. The water softener enters the regeneration mode. Please refer to Figure 4 and Figure 6 .

[0072] In the regeneration mode, after the brine flows from the brine tank 200 into the resin tank 100, the water outlet 303 and the space on the second side 316 of the regeneration chamber 310 are in communication with the atmosphere through the brine inlet 304, and the end face of the piston 410 facing the second side 316 bears the atmospheric pressure. If the inlet valve connected to the water inlet 104 is opened at this time, the water inlet 104 conducts the external water source, and the water source flows from the water inlet 302 into the space on the first side 315 of the regeneration chamber 310. The water inlet pressure borne by the end face of the piston 410 facing the first side 315 is greater than the atmospheric pressure borne by the end face of the piston 410 facing the second side 316, causing the piston 410 to move in the direction from the first side 315 to the second side 316 to a position corresponding to the water production mode. After the piston 410 moves into place, the water inlet 302 can be connected to the water outlet 303 through the space on the first side 315 of the regeneration chamber 310, so that the raw water can flow to the water outlet 303 and into the resin tank 100.

[0073] It can be understood that the first side 315 and the second side 316 of the regeneration chamber 310 are relative concepts, with the piston 410 as the demarcation reference. Therefore, when the piston 410 moves, the volumes of the first side 315 and the second side 316 will change, but the relative positional relationship between the two remains unchanged.

[0074] Of course, in other embodiments, it can also be the movement of the piston 410 in the first direction, so that the water outlet 303 can conduct the water inlet 302 or the brine inlet 304 on the first side 315, that is, both the brine inlet 304 and the water inlet 302 utilize the space on the first side 315 of the regeneration chamber 310.

[0075] Please refer to Figure 3 and Figure 4 In an embodiment, the brine inlet 304 is located on the first side 315. The regeneration piston 400 is provided with a liquid guiding channel 403, a liquid guiding inlet 404 communicating with the liquid guiding channel 403, and a liquid guiding outlet 405. The liquid guiding inlet 404 communicates with the brine inlet 304, and the liquid guiding outlet 405 communicates with the water outlet 303. In the water production mode, the liquid guiding inlet 404 and / or the liquid guiding outlet 405 are blocked; in the regeneration mode, the liquid guiding inlet 404 and the liquid guiding outlet 405 are conducted. Specifically, after the piston 410 is displaced to a position corresponding to the water production mode, at least one of the liquid guiding inlet 404 and the liquid guiding outlet 405 on the liquid guiding channel 403 is blocked, thereby blocking the communication between the water outlet 303 and the brine inlet 304. The brine inlet 304 indirectly communicates with the water outlet 303 through a dedicated liquid guiding channel 403, which can allow both the brine inlet 304 and the water inlet 302 to be arranged on the first side 315 of the regeneration chamber 310, thereby improving the compactness of the structure. Of course, in other embodiments, the brine inlet 304 can also be located on the second side 316, and in this case, the liquid guiding channel 403 and the liquid guiding inlet 404 and the liquid guiding outlet 405 may not be provided.

[0076] See also Figures 3 to 6 In one embodiment, the regeneration piston 400 further includes a first conduit 420 connected to the piston 410 and located on the first side 315, the liquid guide channel 403 is at least partially formed on the piston 410 and the first conduit 420, the regeneration chamber 310 includes a piston chamber 311 and a conduit chamber 312 that are connected, the cavity wall of the piston chamber 311 is provided with a water inlet 302 and a water outlet 303, the cavity wall of the conduit chamber 312 is provided with a saline inlet 304, the piston 410 is provided in the piston chamber 311, and the first conduit 420 is provided with a liquid guide inlet 404 on the end extending into the conduit chamber 312. In this way, the structure is simple and the function is easy to realize, and the water inlet 302 and the saline inlet 304 are separated by the cavity wall of the conduit chamber 312, which can reduce the risk of mutual interference of liquid flows in different working modes. Of course, in other embodiments, the first conduit 420 may not be provided.

[0077] It can be understood that the first conduit 420 and the conduit chamber 312 cooperate with each other to realize the conduction or isolation function of the liquid inlet 404 and the saline inlet 304 in various structural forms. For example, in one embodiment, the end face of the first conduit 420 is closed, the liquid inlet 404 is arranged on the side wall of the first conduit 420, and the saline inlet 304 is arranged on the side wall of the conduit chamber 312. In the water production mode, the liquid inlet 404 and the saline inlet 304 are staggered in the first direction, and in the regeneration mode, the liquid inlet 404 and the saline inlet 304 are overlapped in at least part of the first direction. In this way, the structure is simple and the function is easy to realize.

[0078] Specifically, in the water production mode, the first conduit 420 moves in the conduit chamber 312 to a position corresponding to the water production mode, so that the liquid inlet 404 and the salt solution inlet 304 are offset in the first direction, resulting in the salt solution in the salt box 200 being unable to enter the liquid channel 403 through the liquid inlet 404, and thus unable to flow to the second side 316 of the regeneration chamber 310 and the water outlet 303.

[0079] In the regeneration mode, the first conduit 420 moves in the conduit chamber 312 to a position corresponding to the regeneration mode, so that the liquid inlet 404 and the saline solution inlet 304 overlap at least partially in the first direction, that is, the liquid inlet 404 and the saline solution inlet 304 are connected, so that the saline in the salt box 200 can enter the liquid channel 403 through the liquid inlet 404, and enter the second side 316 of the regeneration chamber 310 through the liquid channel 403 to flow to the water outlet 303.

[0080] Of course, in other embodiments, the liquid inlet 404 can also be arranged on the end face of the first conduit 420, the inner wall surface of the conduit chamber 312 is provided with a saline conduit with an end face closed, the saline inlet 304 is arranged on the side wall of the saline conduit, the liquid inlet 404 includes a large hole section and a small hole section that are connected, the large hole section is arranged near the liquid outlet 405, and the saline conduit is inserted into the liquid inlet 404. In the water production mode, the saline inlet 304 is located in the small hole section, and the side wall of the saline conduit is sealed with the hole wall of the small hole section, so that the saline inlet 304 cannot be connected with the large hole section and the liquid conduit channel 403. In the regeneration mode, the saline inlet 304 is located in the large hole section, and the outer surface of the saline conduit is spaced from the hole wall surface of the large hole section, and a gap for the circulation of saline is formed at the interval, and the saline inlet 304 can be connected with the large hole section and the liquid conduit channel 403 through the gap.

[0081] See also Figure 5 In one embodiment, the outer periphery of the first conduit 420 is provided with a first sealing ring 421, and the liquid inlet 404 is located on the side of the first sealing ring 421 close to the piston chamber 311. In the water production mode, the outer periphery of the first sealing ring 421 is sealed to connect the side wall of the conduit chamber 312. In this way, by providing the first sealing ring 421, in the water production mode, the sealing and matching effect of the first conduit 420 and the conduit chamber 312 can be improved to prevent the salt solution from leaking to the first side 315 of the regeneration chamber 310 and mixing into the raw water flow to affect the softening process of the resin tank 100, thereby facilitating the softening effect in the water production mode. Of course, in other embodiments, the first sealing ring 421 may not be provided.

[0082] See also Figure 5 In one embodiment, the outer periphery of the first conduit 420 is sleeved with a second sealing ring 424, the liquid inlet 404 is located on the side of the second sealing ring 424 away from the piston chamber 311, and the outer periphery of the second sealing ring 424 is sealed to connect the side wall of the conduit chamber 312 to separate the liquid inlet 404 from the water inlet 302. In this way, by providing the second sealing ring 424, in the regeneration mode, the sealing matching effect of the first conduit 420 and the conduit chamber 312 can be improved, thereby preventing the saline solution from entering the first side 315 of the regeneration chamber 310 through the gap between the first conduit 420 and the inner wall surface of the conduit chamber 312, and reversely flowing into the water inlet 104 and the external water valve (such as a mixing valve) connected to the water inlet 104, causing the internal structure of the water valve to be corroded. Of course, in other embodiments, the first sealing ring 421 may not be provided.

[0083] It can be understood that in an embodiment where the first conduit 420 is provided with both the first sealing ring 421 and the second sealing ring 424, the first sealing ring 421 and the second sealing ring 424 are respectively disposed on opposite sides of the liquid inlet 404. Among them, the first sealing ring 421 is located on the side of the liquid inlet 404 away from the piston chamber 311. When the first conduit 420 is in the position corresponding to the water production mode, both the first sealing ring 421 and the second sealing ring 424 are on the side close to the piston chamber 311 of the brine inlet 304. During the process of the first conduit 420 moving to the position corresponding to the regeneration mode, the first sealing ring 421 will pass over the brine inlet 304 until the first sealing ring 421 is on the side of the brine inlet 304 away from the piston chamber 311, and at this time the second sealing ring 424 is still on the side close to the piston chamber 311 of the brine inlet 304.

[0084] Please refer to Figure 3 , in an embodiment, the regeneration piston 400 further includes a piston sealing ring 411 sleeved on the outer peripheral side of the piston 410, and the outer peripheral side of the piston sealing ring 411 abuts against the inner wall surface of the piston chamber 311. Thus, in the regeneration mode, the piston sealing ring 411 can be in sealing cooperation with the inner wall surface of the piston chamber 311 to prevent the raw water in the space on the first side 315 from entering the second side 316 through the gap between the regeneration piston 400 and the inner wall surface of the piston chamber 311, thereby avoiding the problem that the brine is diluted by the accidentally mixed raw water, resulting in a weakened effect when the brine enters the resin tank 100 for regeneration. Of course, in other embodiments, the piston sealing ring 411 may not be provided.

[0085] Please refer to Figure 9 and Figure 11 , in an embodiment, the water outlet 303 includes a plurality of water outlet grid holes, and the plurality of water outlet grid holes are spaced along the circumferential direction of the piston 410. Thus, by setting the water outlet 303 in the structure of water outlet grid holes, the water outlet 303 is divided into a plurality of grid holes. When the piston 410 passes over the water outlet 308, not too much of the piston sealing ring 411 will get into the water outlet 303, thereby avoiding the problem that the piston sealing ring 411 is scratched and damaged by the edge of the water outlet 303 when passing over the water outlet 308. Of course, in other embodiments, the water outlet 303 may also be configured as a simple through-hole structure.

[0086] Please refer to Figures 3 to 6, in one embodiment, the regeneration piston 400 further includes a second conduit 430 connected to the piston 410 and located on the second side 316. The second conduit 430 is provided with a liquid guide outlet 405. The liquid guide channel 403 is partially formed in the second conduit 430. The liquid guide outlet 405 is in communication with the water outlet 303 in both the water production mode and the regeneration mode. That is to say, in this embodiment, the liquid guide outlet 405 remains in a conductive state with the water outlet 303, regardless of whether the water softener is in the water production mode or the regeneration mode. On this basis, whether the liquid guide inlet 404 is in communication with the brine inlet 304 determines whether the brine inlet 304 can be in communication with the space on the second side 316 through the liquid guide channel 403. Thus, by providing the second conduit 430 to form the liquid guide outlet 405 and extending the liquid guide channel 403, it is beneficial to simplify the structure of the piston 410 and reduce its manufacturing cost. Of course, in other embodiments, the second conduit 430 may not be provided, the liquid guide channel 403 is partially formed in the piston 410, and the liquid guide outlet 405 is provided on the piston 410.

[0087] Please refer to Figure 12 , in one embodiment, a conduit cavity 313 protrudes inwardly from the end surface of the piston chamber 311. The conduit chamber 312 is provided in the conduit cavity 313. The axis of the water inlet 302 is disposed outside the conduit cavity 313. That is to say, the arrangement position of the water inlet 302 is adjusted to make it deviate from the protruding structure of the conduit cavity 313 as much as possible. Specifically, the axis of the water inlet 302 intersects with the first direction, and the water at the water inlet 302 flows into the space on the first side 315 along a direction intersecting with the first direction. If the water inlet 302 directly faces the conduit cavity 313, most of the water flow will directly impact on the conduit cavity 313, which will not only cause poor water inlet, but also may cause water flow noise. Thus, by adjusting the arrangement position of the water inlet 302 to make it deviate from the protruding structure of the conduit cavity 313 as much as possible, the interference and obstruction of the conduit cavity 313 to the water flow flowing in from the water inlet 302 can be reduced, thereby improving the smoothness of water inlet and reducing the water flow noise. Of course, in other embodiments, the axis of the water inlet 302 may pass through the conduit cavity 313.

[0088] Please refer to Figure 12 , specifically and optionally, the axis of the conduit cavity 313 extends along the first direction, and the axis of the water inlet 302 is located below the middle of the conduit cavity 313. Thus, the structural compactness of the cavity 301 can be improved, which is beneficial to the miniaturized design of the water softener. Of course, in other embodiments, the axis of the water inlet 302 may be located above the conduit cavity 313, or in front of the conduit cavity 313.

[0089] It should be noted that in the embodiments of the present invention, the front-back direction refers to the first direction, the up-down direction refers to the height direction of the water softener, and the left-right direction refers to the axial direction of the water inlet 302. Among them, the first side 315 and the second side 316 of the regeneration chamber 310 are sequentially distributed from the back to the front.

[0090] Please refer to Figure 5 and Figure 7 , in one embodiment, the regeneration piston assembly further includes a button 500 connected to the piston 410, and at least a part of the button 500 is exposed outside the cavity 301. That is to say, in this embodiment, the regeneration piston 400 is manually driven by the user to be able to switch from the position corresponding to the self-made water mode to the position corresponding to the regeneration mode. In this way, the structure is simple and the product cost is low. Optionally, in this embodiment, the button 500 is exposed on the front end face of the water softener. Such a design is more in line with the user's usage habits, so as to facilitate the user to operate the button 500 and check whether the button 500 is pressed in place.

[0091] Please refer to Figure 4 and Figure 7 , in one embodiment, the cavity 301 is provided with an installation hole 314 communicating with the regeneration chamber 310. The regeneration piston assembly further includes a plug 600 disposed in the installation hole 314. The plug 600 is provided with a guiding hole 610 communicating with the regeneration chamber 310. The button 500 includes a pressing disk 510 and a connecting column 520 connected to each other. One end of the connecting column 520 away from the pressing disk 510 passes through the guiding hole 610 and is connected to the piston 410. In this way, the structure is simple and easy to install.

[0092] Specifically, when assembling the water softener, first insert the regeneration piston 400 into the regeneration chamber 310 from the installation hole 314, then install the plug 600 onto the installation hole 314, and then pass the connecting column 520 of the button 500 through the guiding hole 610 on the plug 600 to extend into the regeneration chamber 310 until the connecting column 520 is connected and fixed to the regeneration piston 400. Of course, in other embodiments, the plug 600 may not be provided. Or, first pass the connecting column 520 of the button 500 through the guiding hole 610 on the plug 600 and complete the connection and fixation with the regeneration piston 400, and then install the regeneration piston 400 together with the plug 600 and the button 500 onto the cavity 301 so that the regeneration piston 400 can be inserted into the regeneration chamber 310 and the plug 600 is installed onto the installation hole 314.

[0093] Please refer to Figure 4 and Figure 17, in one embodiment, the guiding hole 610 includes a disk hole section 611 and a column hole section 612 that communicate with each other. The pressing disk 510 can be received in the disk hole section 611, and the connecting column 520 movably penetrates through the column hole section 612 and is in sealing cooperation with the hole wall surface of the column hole section 612. On the one hand, by using the sealing cooperation between the connecting column 520 and the hole wall surface of the column hole section 612, it is possible to improve the sealing effect between the key 500 and the guiding hole 610 on the premise of allowing the key 500 to move in the first direction, thereby avoiding the problem of the liquid in the regeneration chamber 310 leaking out through the guiding hole 610. On the other hand, by using the disk hole section 611 to receive the pressing disk 510, the pressing disk 510 can move within the disk hole section 611, which can reduce the risk of the pressing disk 510 protruding outside the guiding hole 610 and being accidentally pushed.

[0094] Please refer to Figure 3 , optionally in this embodiment, the regeneration piston assembly further includes a key sealing ring 613. The key sealing ring 613 is embedded and installed on the hole wall of the column hole section 612, and the inner peripheral side of the key sealing ring 613 is in sealing contact with the connecting column 520. In this way, the sealing effect between the connecting column 520 and the hole wall of the column hole section 612 is achieved by using the key sealing ring 613, and the structure is simple and easy to implement. Secondly, since the key sealing ring 613 is embedded on the hole wall of the column hole section 612, the key sealing ring 613 is relatively stationary with respect to the plug cover 600, which can reduce the problem that the key sealing ring 613 is displaced after moving with the connecting column 520 multiple times and the sealing effect is weakened. Of course, in other embodiments, the key sealing ring 613 may not be provided.

[0095] Please refer to Figure 4 , Figures 13 to 16 , in one embodiment, the regeneration piston 400 further includes a second conduit 430 that connects the piston 410 and is located on the second side 316. One of the second conduit 430 and the connecting column 520 is provided with a clamping protrusion 521, and the other is provided with a clamping hole 431. The clamping protrusion 521 is clamped in the clamping hole 431. In this way, by adding the second conduit 430, it is beneficial to shorten the length of the connecting column 520, and by using the clamping and fixing effect of the clamping protrusion 521 and the clamping hole 431, the installation and fixation of the connecting column 520 and the regeneration piston 400 are realized, and the structure is simple and easy to install. Of course, in some other embodiments, the clamping protrusion 521 and the clamping hole 431 may not be provided, but the installation and fixation of the second conduit 430 and the connecting column 520 may be realized by fasteners such as screws or rivets, or the two may be directly welded and fixed. In other embodiments, the second conduit 430 may not be provided, and the connecting column 520 is directly connected to the piston 410.

[0096] Optionally, in this embodiment, the clamping protrusion 521 is provided on the connecting column 520, and the clamping hole 431 is provided on the second conduit 430. Of course, in other embodiments, the clamping protrusion 521 can also be provided on the second conduit 430, and the clamping hole 431 can be provided on the connecting column 520.

[0097] It should be noted that in the embodiment where the regeneration piston 400 is provided with the second conduit 430, and the second conduit 430 is provided with the liquid guiding channel 403 and the liquid guiding outlet 405, the second conduit 430 is reused as the installation structure for connecting the button 500. In this way, it is beneficial to simplify the structure of the regeneration piston assembly and reduce its product cost.

[0098] In one embodiment, the clamping hole 431 is provided through the side wall of the liquid guiding channel 403, the clamping protrusion 521 is provided on the outer side surface of the connecting column 520, and the end of the connecting column 520 can be inserted into the liquid guiding channel 403 so that the clamping protrusion 521 can be clamped on the clamping hole 431; the connecting column 520 is provided with an avoidance opening corresponding to the liquid guiding outlet 405. In this way, the structure is simple and easy to implement. Of course, in other embodiments, the connecting column 520 can also be arranged around the outer circumference of the second conduit 430, and the clamping protrusion 521 is provided on the inner side surface of the connecting column 520.

[0099] Please refer to Figure 14 and Figure 16 , optionally, in this embodiment, the liquid guiding outlet 405 penetrates through the end face and the circumferential side face of the second conduit 430 at the same time, and the avoidance opening penetrates through the end face and the circumferential side face of the connecting column 520 at the same time. In this way, it is convenient for the second conduit 430 and the connecting column 520 to be manufactured and formed with the liquid guiding outlet 405 and the avoidance opening.

[0100] Optionally, both the liquid guiding outlet 405 and the clamping hole 431 are provided with two, and the liquid guiding outlet 405 and the clamping hole 431 are alternately distributed at intervals along the circumferential direction of the second conduit 430. It can be understood that the avoidance opening and the clamping protrusion 521 on the connecting column 520 are also correspondingly provided with two, and the avoidance opening and the clamping protrusion 521 are alternately distributed at intervals along the circumferential direction of the second conduit 430. In this way, on the one hand, the total flow area of the liquid guiding outlet 405 can be increased, which is beneficial to the outflow of the brine from the liquid guiding channel 403 in the regeneration mode; on the other hand, the two sets of matching structures composed of the clamping protrusion 521 and the clamping hole 431 can improve the connection stability and reliability between the connecting column 520 and the second conduit 430. Of course, in other embodiments, only one of the liquid guiding outlet 405 or the clamping hole 431 can be provided, or three or more can be provided.

[0101] The present invention also proposes a water softener, please refer to Figure 1 and Figure 2, the water softener includes a resin tank 100, a salt tank 200, and the aforementioned regeneration piston assembly. For the specific structure of the regeneration piston assembly, refer to the above-mentioned embodiments. Since this water softener adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one. Among them, the resin tank 100 is provided with a resin chamber 101 and a water inlet 102 communicating with the resin chamber 101. The salt tank 200 is provided with a salt chamber 201 and a brine outlet 202 communicating with the salt chamber 201. The water outlet 303 of the chamber 301 communicates with the water inlet 102, and the brine inlet 304 communicates with the brine outlet 202.

[0102] Please refer to Figures 7 to 10 , in one embodiment, the water softener further includes a water circuit board 300 provided at the water inlet 102. The water circuit board 300 is provided with a water passage 306, a water inlet 307 communicating with the water passage 306, and a water outlet 308. The water inlet 307 communicates with an external water source, and the water outlet 308 communicates with the water inlet 102. The chamber 301 is provided on the water circuit board 300, and the regeneration chamber 310 communicates with the water passage 306. In this way, by integrating the functions of the chamber 301 and the water circuit board 300, it is beneficial to simplify the structures of the resin tank and the salt tank.

[0103] Please refer to Figure 10 , optionally in this embodiment, the water circuit board 300 integrally forms the chamber 301. The water passage 306 includes the regeneration chamber 310. The water inlet 302 communicates with the water inlet 307, and the water outlet 303 communicates with the water outlet 308. That is to say, in this embodiment, the water circuit board 300 and the chamber 301 are configured as the same structure, and the regeneration chamber 310 is provided on the water circuit board 300. In this way, the structure is simple and easy to implement. Of course, in other embodiments, the water circuit board 300 and the chamber 301 may also be configured as different structures. The chamber 301 is installed on the water circuit board 300 through fasteners, or the chamber 301 is directly welded and fixed on the water circuit board 300.

[0104] Please refer to Figures 7 to 10, in one embodiment, the water circuit board 300 includes a cover body 320 and a pipe body 330 disposed in the cover body 320. The cover opening of the cover body 320 faces downward and communicates with the water inlet 102. A water passage 306 is disposed in the pipe body 330. The pipe body 330 includes an intersecting first pipe section 331 and a second pipe section 332. The first pipe section 331 extends along the length direction of the water inlet 102 and is provided with a water outlet 308. The second pipe section 332 is provided with a regeneration chamber 310 and forms a water outlet 303 at the position intersecting with the first pipe section 331. On the one hand, by setting the water circuit board 300 in the structural form of the cover body 320 combined with the pipe body 330, it is beneficial to simplify the structure of the water circuit board 300. On the other hand, through the first pipe section 331, the water outlet 308 can be arranged at a position corresponding to the middle area of the water inlet 102, which is beneficial to more evenly distribute the raw water to different areas in the resin tank 100, so as to improve the softening rate and effect of the resin tank 100.

[0105] Please refer to Figure 3 , optionally in this embodiment, the water softener further includes an upper water distributor 120. The upper water distributor 120 is installed on the water inlet 102 by means of bonding, welding or screw connection. In this way, by using the upper water distributor 120 in cooperation with the first pipe section 331, it is possible to further promote the more even distribution of the raw water to different areas in the resin tank 100, so as to improve the softening rate and effect of the resin tank 100. Of course, in other embodiments, the upper water distributor may not be provided.

[0106] Please refer to Figure 2 , Figures 8 to 10 , in one embodiment, the first pipe section 331 is integrally formed on the top wall of the water circuit board 300, and a forming hole is provided on the side wall of the water circuit board 300 corresponding to the first pipe section 331. The water softener further includes a side plug cover 130, and the side plug cover 130 is installed on the forming hole. In this way, the integrally formed structural design can reduce the assembly process of the water softener and the structure is stable and reliable. Of course, in other embodiments, the first pipe section 331 may also be separately formed from the water circuit board 300 and installed as a whole by means of screw connection or welding.

[0107] Please refer to Figure 2 , Figure 8, optionally, in this embodiment, the end surface of the first pipe section 331 is spaced from the inner side surface of the water circuit board 300. The side plug cover 130 is provided with a plug 131 at the end extending into the water circuit board 300, and the plug 131 is sealingly inserted into the end pipe orifice of the first pipe section 331. In this way, the end of the first pipe section 331 away from the second pipe section 332 is formed into a closed structure by using the plug 131 to block, so that the liquid flowing into the first pipe section 331 can only flow out through the water passing outlet 308 located in the middle thereof, so as to promote the liquid to be more evenly distributed to different areas in the resin tank 100. Of course, in other embodiments, the end of the first pipe section 331 may also be connected to the inner side surface of the water circuit board 300, or the side plug cover 130 may not be provided with the plug 131.

[0108] Please refer to Figure 7 and Figure 8 , in an embodiment, the pipe body 330 further includes an intersecting third pipe section 333 and a fourth pipe section 334. The third pipe section 333 intersects with the second pipe section 332, and a water inlet 302 is formed at the intersection. The end of the fourth pipe section 334 away from the third pipe section 333 is provided with a water passing inlet 307.

[0109] Please refer to them together Figure 5 and Figure 10 , optionally, in this embodiment, the axis of the fourth pipe section 334 extends in the up and down direction, the axis of the third pipe section 333 extends in the left and right direction, and the axis of the second pipe section 332 extends in the front and back direction; a plurality of water guiding ribs 335 are provided on the inner wall surface of the third pipe section 333, and the plurality of water guiding ribs 335 are spaced along the circumferential direction of the third pipe section 333, and the water guiding ribs 335 extend along the axial direction of the third pipe section 333. It can be understood that since the third pipe section 333 and the fourth pipe section 33 are intersecting, the water flow flowing from the fourth pipe section 334 into the third pipe section 333 needs to turn before flowing from the third pipe section 333 into the second pipe section 332. By providing the water guiding ribs 335, the turning water flow can be rectified to improve the smoothness of the raw water flow and reduce the vibration noise problem caused by the water flow impact. Of course, in other embodiments, the water guiding ribs 335 may not be provided.

[0110] Please refer to Figure 2, in one embodiment, the resin tank is integrally formed with a water inlet passage 105. The water inlet passage 105 extends in the vertical direction and is spaced apart from the resin cavity 101. A water inlet 104 is formed at the lower end of the water inlet passage 105, and the upper end of the water inlet passage 105 faces and communicates with the fourth pipe section 334. Specifically, raw water flows into the water inlet passage 105 from the water inlet 104, flows upward into the fourth pipe section 334, then turns in the third pipe section 333 and flows into the regeneration chamber 310 of the second pipe section 332, then flows out through the water outlet 303 into the first pipe section 331, and finally flows through the water passing outlet 308 in the middle of the first pipe section 331 to the water inlet 102. In this way, the assembly process of the water softener can be simplified and its production efficiency can be improved. Of course, in other embodiments, the water softener may also include a water inlet pipe installed on the resin tank, and the water inlet pipe is formed with a water inlet passage.

[0111] Optionally, in this embodiment, at least a part of the water inlet passage 105 protrudes from the outer side surface of the resin cavity 101. In this way, the space occupied by the water inlet passage 105 in the resin cavity 101 can be reduced, which is beneficial to increasing the volume of the resin cavity 101, so that the resin cavity 101 can accommodate more resin particles and improve its softening rate and effect. Of course, in other embodiments, the water inlet passage 105 may also be completely received inside the outer side surface of the resin tank 101.

[0112] In one embodiment, the cover 320, the first pipe section 331, the second pipe section 332, the third pipe section 333 and the fourth pipe section 334 are integrally formed. In this way, the assembly process of the water circuit board 330 can be simplified, the production efficiency of the water softener can be improved, and the structure of the water circuit board 300 can be made more stable and reliable.

[0113] In one embodiment, the edge of the cover opening of the cover 320 is welded and fixed to the edge of the water inlet 102. In this way, the structure is simple and the connection is reliable, which is beneficial to shortening the assembly time of the water circuit board 300 and the resin tank 100. Of course, in other embodiments, the cover 320 may also be installed on the water inlet 102 through a snap connection structure, or the edge of the cover opening of the cover 320 may be adhesively fixed to the edge of the water inlet 102.

[0114] In the related art, a water pump is usually provided in the salt box 200, and the salt solution is pumped to the resin tank 100 by the water pump. This solution results in a complex structure of the water softener and a high product cost. To solve this technical problem, in an embodiment of the present invention, optionally, the water circuit board 300 is disposed above the resin tank 100, and the salt box 200 is disposed above the water circuit board 300. The salt solution in the salt box 200 flows into the water circuit board 300 and the resin tank 100 by gravity. Thus, the salt solution in the salt box 200 can enter the resin tank 100 without relying on a water pump, which can save the water pump and its related water circuit structure, thereby simplifying the structure of the water softener and reducing its product cost. Of course, in other embodiments, the salt box 200 may also be disposed on the side or below the resin tank 100, and the water softener further includes a water pump for transporting the salt solution in the salt box 200 into the resin tank 100.

[0115] In one embodiment, the salt box 200 is detachably mounted on the water circuit board 300. Thus, it is possible to allow the salt box 200 to be detached from the water circuit board 300 for separate cleaning, maintenance or replacement of the salt box 200, thereby improving the convenience of use of the water softener. Of course, in other embodiments, the salt box 200 may also be fixed to the water circuit board 300 by welding or bonding.

[0116] Please refer to Figure 7 , optionally, one of the water circuit board 300 and the salt box 200 is provided with a plurality of positioning holes 309 at intervals, and the other is provided with positioning posts (not shown in the drawings) corresponding to the positioning holes 309, and the positioning posts are inserted into the positioning holes 309.

[0117] Please refer to Figure 7 , in this embodiment, optionally, the axis of the positioning hole 309 extends in the up and down direction and is provided on the top wall of the water circuit board 300, the positioning post is provided on the bottom wall of the salt box 200, there are a plurality of positioning holes 309, and at least two positioning holes 309 are spaced apart along the length direction of the water circuit board 300, and at least two positioning holes 309 are spaced apart along the width direction of the water circuit board 300. Specifically, the positioning post is inserted into the positioning hole 309 from top to bottom, and the positioning and installation of both the salt box 200 and the water circuit board 300 can be completed at the same time; when disassembling the salt box 200, only the salt box 200 needs to be lifted. Thus, the structure is simple and it is easy to install and disassemble the salt box 200. Of course, in other embodiments, the salt box 200 may also be detachably installed on the water circuit board 300 by means of screw connection or snap connection.

[0118] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A regenerated piston assembly, characterized in that, Comprising: A cavity provided with a regeneration chamber. The chamber wall of the regeneration chamber is provided with a water inlet, a water outlet and a brine inlet. The water inlet is communicated with an external water source, the water outlet is communicated with a resin tank, and the brine inlet is communicated with a salt box; A regeneration piston movably arranged in the regeneration chamber to switch between a regeneration mode and a water production mode. After being acted on by the water inlet pressure of the external water source, the regeneration piston can switch from the regeneration mode to the water production mode.

2. The regenerated piston assembly according to claim 1, wherein, The regeneration chamber extends in a first direction. The regeneration piston includes a piston moving along the first direction. The water inlet and the water outlet are distributed in a staggered manner in the first direction. The regeneration chamber has a first side and a second side respectively arranged on opposite sides of the piston, and the water inlet is located on the first side; In the water production mode, at least part of the water outlet is exposed on the first side. The water outlet is communicated with the water inlet and is separated from the brine inlet; In the regeneration mode, at least part of the water outlet is exposed on the second side. The water outlet is communicated with the brine inlet and is separated from the water inlet.

3. The regenerated piston assembly according to claim 2, wherein, The brine inlet is located on the first side. The regeneration piston is provided with a liquid guiding channel, a liquid guiding inlet and a liquid guiding outlet communicating with the liquid guiding channel. The liquid guiding inlet is communicated with the brine inlet, and the liquid guiding outlet is communicated with the water outlet. In the water production mode, the liquid guiding inlet and / or the liquid guiding outlet is / are blocked; in the regeneration mode, the liquid guiding inlet and the liquid guiding outlet are conducted.

4. The regenerated piston assembly according to claim 3, characterized in that, The regeneration piston further includes a first conduit connected to the piston and located on the first side. At least part of the liquid guiding channel is formed in the piston and the first conduit. The regeneration chamber includes a piston chamber and a conduit chamber communicated with each other. The chamber wall of the piston chamber is provided with the water inlet and the water outlet, and the chamber wall of the conduit chamber is provided with the brine inlet. The piston is arranged in the piston chamber, and the liquid guiding inlet is provided at the end of the first conduit extending into the conduit chamber.

5. The regenerated piston assembly according to claim 4, characterized in that, The end face of the first conduit is closed. The liquid guiding inlet is provided on the side wall of the first conduit, and the brine inlet is provided on the side wall of the conduit chamber. In the water production mode, the liquid guiding inlet and the brine inlet are arranged in a staggered manner in the first direction. In the regeneration mode, the liquid guiding inlet and the brine inlet at least partially overlap in the first direction.

6. The regenerated piston assembly according to claim 5, wherein, A first sealing ring is sleeved on the outer periphery of the first conduit. The liquid guiding inlet is located on the side of the first sealing ring close to the piston chamber. In the water production mode, the outer periphery of the first sealing ring is hermetically connected to the side wall of the conduit chamber.

7. The regenerated piston assembly according to claim 4, wherein, A second sealing ring is sleeved on the outer periphery of the first conduit. The liquid guiding inlet is located on the side of the second sealing ring away from the piston chamber. The outer periphery of the second sealing ring is hermetically connected to the side wall of the conduit chamber to separate the liquid guiding inlet from the water inlet.

8. The regenerated piston assembly according to claim 4, wherein, The regeneration piston further includes a second conduit connected to the piston and located on the second side. The second conduit is provided with the liquid guiding outlet. The liquid guiding channel is partially formed in the second conduit. The liquid guiding outlet is in communication with the water outlet in both the water production mode and the regeneration mode.

9. The regenerated piston assembly according to claim 4, wherein, On the end surface of the piston chamber, a conduit cavity is convexly provided inward. The conduit chamber is arranged in the conduit cavity. The axis of the water inlet is arranged outside the conduit cavity.

10. The regenerative piston assembly according to claim 2, wherein, The regeneration piston assembly further includes a button connected to the piston. At least a part of the button is exposed outside the chamber.

11. The regenerated piston assembly according to claim 10, wherein, The chamber is provided with a mounting hole communicating with the regeneration chamber. The regeneration piston assembly further includes a plug provided in the mounting hole. The plug is provided with a guiding hole communicating with the regeneration chamber. The button includes a pressing disk and a connecting column connected to each other. One end of the connecting column far from the pressing disk passes through the guiding hole and is connected to the piston.

12. The regenerated piston assembly according to claim 11, wherein, The guiding hole includes a disk hole section and a column hole section communicating with each other. The pressing disk can be received in the disk hole section. The connecting column movably passes through the column hole section and is in sealing cooperation with the hole wall surface of the column hole section.

13. The regenerated piston assembly according to claim 11, wherein, The regeneration piston further includes a second conduit connected to the piston and located on the second side. One of the second conduit and the connecting column is provided with a clamping projection, and the other is provided with a clamping hole. The clamping projection is clamped in the clamping hole.

14. A water softener, characterized in that, Comprising: A resin tank, provided with a resin chamber and a water inlet communicating with the resin chamber; A salt box, provided with a salt chamber and a salt liquid outlet communicating with the salt chamber; And The regeneration piston assembly according to any one of claims 1 to 13, wherein the water outlet of the chamber communicates with the water inlet, and the salt liquid inlet communicates with the salt liquid outlet.

15. The water softener according to claim 14, wherein The water softener further includes a water circuit board provided at the water inlet. The water circuit board is provided with a water passing channel, a water passing inlet and a water passing outlet communicating with the water passing channel. The water passing inlet is in communication with an external water source. The water passing outlet is in communication with the water inlet. The chamber is arranged on the water circuit board. The regeneration chamber communicates with the water passing channel.

16. The water softener according to claim 15, characterized in that, The water circuit board integrally forms the chamber. The water passing channel includes the regeneration chamber. The water inlet communicates with the water passing inlet. The water outlet communicates with the water passing outlet.

17. The water softener according to claim 15, characterized in that, The water circuit board is arranged above the resin tank. The salt box is arranged above the water circuit board. The salt liquid in the salt box flows into the water circuit board and the resin tank by gravity.

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