Water softener

Abstract

The invention discloses a water softener, and relates to the technical field of water softeners, the water softener comprises a resin tank and a salt box, the resin tank is provided with a resin cavity and a water inlet communicated with the resin cavity, the salt box is arranged above the resin tank and is provided with a salt liquid outlet, the salt liquid outlet is communicated with the water inlet, and the water inlet is communicated with the resin cavity. And salt liquid in the salt box flows into the resin tank by virtue of gravity. According to the technical scheme, the structure of the water softener can be simplified, and the product cost of the water softener can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water softeners, and particularly to 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, a water pump is usually arranged in the salt tank, and the brine is pumped into the resin tank by the water pump. This solution results in a complex structure of the water softener and a high product cost. Summary of the Invention

[0003] The main object of the present invention is to provide a water softener, aiming to simplify the structure of the water softener and reduce its product cost.

[0004] To achieve the above object, the water softener proposed by the present invention includes:

[0005] A resin tank, provided with a resin cavity and a water inlet communicating with the resin cavity; and

[0006] A salt tank, arranged above the resin tank and provided with a brine outlet, the brine outlet is communicated with the water inlet, and the brine in the salt tank flows into the resin tank by gravity.

[0007] In an embodiment, the water inlet is arranged on the top surface of the resin tank, and the water softener further includes a water circuit board arranged at the water inlet and below the salt tank. The water circuit board is provided with a water passing cavity, and the brine outlet communicates with the water inlet through the water passing cavity.

[0008] In an embodiment, the water passing cavity includes a regeneration chamber, a water inlet channel and a water outlet channel respectively communicating with the regeneration chamber. The chamber wall of the regeneration chamber is provided with a brine inlet communicating with the brine outlet. The water inlet channel communicates with an external water source, and the water outlet channel communicates with the water inlet. The water softener further includes a regeneration piston, and the regeneration piston is movably arranged in the regeneration chamber to switch between the regeneration mode and the water production mode;

[0009] In the water production mode, the water inlet channel is communicated with the water outlet channel, and the brine inlet is separated from the water outlet channel;

[0010] In the regeneration mode, the brine inlet is communicated with the water outlet channel, and the water inlet channel is separated from the water outlet channel.

[0011] In an embodiment, the water inlet channel and the water outlet channel extend in the same direction and are respectively arranged on opposite sides of the regeneration chamber.

[0012] In one embodiment, a water inlet and a water outlet are further provided on the chamber wall of the regeneration chamber. The water inlet is communicated with the water inlet channel, and the water outlet is communicated with the water outlet channel. 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 blocked. In the regeneration mode, the liquid guide inlet and the liquid guide outlet are conducted.

[0013] In one embodiment, the regeneration piston moves along a first direction and includes a piston and a first conduit. The first conduit is connected to a side of the piston close to the brine inlet. At least part of the liquid guide channel is formed in the piston and the first conduit. The regeneration chamber includes a piston chamber and a conduit chamber that are 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 disposed in the piston chamber, and the liquid guide inlet is provided at an end of the first conduit extending into the conduit chamber.

[0014] In one embodiment, the end face of the first conduit is closed, the liquid guide 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 guide inlet and the brine inlet are arranged in a staggered manner in the first direction. In the regeneration mode, at least part of the regions of the liquid guide inlet and the brine inlet coincide with each other in the first direction.

[0015] In one embodiment, the regeneration piston further includes a second conduit. The second conduit is connected to a side of the piston far from the brine inlet and is provided with the liquid guide outlet. Part of the liquid guide channel is formed in the second conduit, and the liquid guide outlet is communicated with the water outlet in both the water production mode and the regeneration mode.

[0016] In one embodiment, the water softener further includes a button connected to the regeneration piston, and at least part of the button is exposed outside the water circuit board.

[0017] In one embodiment, the water circuit board is provided with an installation hole communicating with the regeneration chamber. The water softener further includes a plug provided in the installation hole. The plug is provided with a guiding hole communicating with the regeneration chamber. The button includes a pressing disc and a connecting column connected to each other. One end of the connecting column far from the pressing disc passes through the guiding hole and is connected to the regeneration piston.

[0018] In one embodiment, after the regeneration piston is acted on by the water inlet pressure of an external water source, it can be switched from the regeneration mode to the water production mode.

[0019] In one embodiment, the cavity wall of the regeneration chamber is further provided with a water inlet and a water outlet, the water inlet is connected to the water inlet channel, and the water outlet is connected to the water outlet channel; the regeneration chamber extends along a first direction, the regeneration piston includes a piston moving along the first direction, the water inlet and the water outlet are staggered 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;

[0020] In the water production mode, the water outlet is at least partially exposed on the first side, the water outlet is connected to the water inlet, and is separated from the saline solution inlet;

[0021] In the regeneration mode, the water outlet is at least partially exposed on the second side, the water outlet is connected to the saline inlet, and is separated from the water inlet.

[0022] In one embodiment, the salt box is detachably mounted on the waterway plate.

[0023] In one embodiment, one of the waterway plate and the salt box is provided with a plurality of positioning holes at intervals, and the other is provided with positioning posts corresponding to the positioning holes, and the positioning posts are inserted into the positioning holes.

[0024] In one embodiment, the salt box is provided with a liquid outlet well and a well cover covering the liquid outlet well, the salt liquid outlet is provided in the liquid outlet well, a liquid outlet is provided on a side wall of the well cover, an outer surface of the liquid outlet well is spaced from the well cover to form a liquid outlet space, and the liquid outlet space connects the liquid outlet and the salt liquid outlet.

[0025] In one embodiment, the salt box includes a box body and a salt grid, the salt grid is arranged in the box body to divide the inner cavity of the box body into a liquid passage and a salt cavity located above the liquid passage, the liquid passage is connected to the salt cavity through the grid holes of the salt grid, and is connected to the liquid outlet, the liquid outlet well is arranged on the bottom wall of the box body, and the well cover is formed on the salt grid.

[0026] In one embodiment, the liquid outlet well includes a first well section and a second well section, the first well section is arranged inside the salt box and cooperates with the well cover, and the second well section is arranged outside the salt box; the water softener also includes a waterway plate and an adapter seat arranged on the waterway plate, the waterway plate is provided with a water flow cavity and a salt solution inlet, the salt solution inlet is connected to the water inlet through the water flow cavity, and the adapter seat is sealingly inserted in the second well section and connects the salt solution outlet and the salt solution inlet.

[0027] In one embodiment, the resin tank is provided with a water outlet communicating with the resin chamber, and the water softener further includes a flow regulating mechanism which is arranged at the water outlet to regulate the water outlet flow rate, and the flow rate of the flow regulating mechanism in the regeneration mode is less than that in the water production mode.

[0028] In one embodiment, the flow regulating mechanism includes:

[0029] A mounting seat provided with a main flow channel and a branch flow channel, the water outlet flow rate of the main flow channel being greater than that of the branch flow channel; and

[0030] A check valve arranged in the main flow channel, the hydrostatic pressure corresponding to the highest water level of the salt tank being less than the minimum opening pressure of the check valve;

[0031] The check valve blocks the main flow channel in the regeneration mode, the check valve conducts the main flow channel in the water production mode, and the branch flow channel is conducted in both the regeneration mode and the water production mode.

[0032] In one embodiment, the inner wall surface of the main flow channel is recessed to form the branch flow channel.

[0033] In one embodiment, the check valve includes a valve seat, a valve plug and an elastic member. The valve seat is sealingly connected to the inner wall surface of the main flow channel and is provided with a flow cavity communicating the water inlet end and the water outlet end of the main flow channel. The valve plug is movably arranged in the flow cavity, and the elastic member connects the valve plug and the valve seat.

[0034] In the technical solution of the present invention, since the salt tank is arranged above the resin tank, the hydrostatic pressure difference corresponding to the height difference between the liquid level of the salt liquid therein and the water inlet of the resin tank can promote the salt liquid to flow into the resin tank from the salt tank. That is, the salt liquid in the salt tank of the present invention can enter the resin tank without relying on a water pump, which can save the water pump and its related water path structures, thereby simplifying the structure of the water softener and reducing its product cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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 following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0036] Figure 1 It is a schematic structural diagram of an embodiment of the water softener provided by the present invention;

[0037] Figure 2 For Figure 1 The sectional view of the structure shown;

[0038] Figure 3 is Figure 1 A partial cross-sectional view of the structure shown at the side view angle at the regeneration piston when the water softener is in the water production mode;

[0039] Figure 4 is Figure 3 Another partial cross-sectional view of the structure shown at the side view angle when the water softener is in the regeneration mode;

[0040] Figure 5 is Figure 1 Another partial cross-sectional view of the structure shown at the top view angle at the regeneration piston when the water softener is in the water production mode;

[0041] Figure 6 is Figure 5 Another partial cross-sectional view of the structure shown at the side view angle when the water softener is in the regeneration mode;

[0042] Figure 7 is Figure 1 An assembly diagram of the water circuit board and the regeneration piston assembly shown;

[0043] Figure 8 is Figure 7 A structural diagram of the water circuit board shown;

[0044] Figure 9 is Figure 8 A side view of the water circuit board shown;

[0045] Figure 10 is Figure 8 A cross-sectional view of the water circuit board shown at the front view angle;

[0046] Figure 11 is Figure 8 A cross-sectional view of the water circuit board shown at the left view angle;

[0047] Figure 12 is Figure 8 A cross-sectional view of the water circuit board shown at the right view angle;.

[0048] Figure 13 is Figure 7 An exploded view of the regeneration piston assembly shown;

[0049] Figure 14 is Figure 13 A structural diagram of the piston shown;

[0050] Figure 15 is Figure 14 A cross-sectional view of the piston shown;

[0051] Figure 16 is Figure 13Schematic structural diagram of the shown button;

[0052] Figure 17 is Figure 13 Schematic structural diagram of the shown plug cover;

[0053] Figure 18 is Figure 1 Schematic structural diagram of the shown salt box and water circuit board;

[0054] Figure 19 is Figure 18 Top view of the shown structure;

[0055] Figure 20 is Figure 19 Cross-sectional view at A - A in

[0056] Figure 21 is Figure 19 Schematic structural diagram of the shown salt grille;

[0057] Figure 22 is Figure 2 Cross-sectional view of the shown flow regulating mechanism;

[0058] Figure 23 is Figure 22 Exploded view of the shown structure;

[0059] Figure 24 is Figure 22 Top view of the shown structure.

[0060] Explanation of the reference numerals in the attached drawings:

[0061] 100, resin tank; 101, resin cavity; 102, water inlet; 103, water outlet; 104, water intake; 105, water intake channel; 120, upper water distributor; 130, side plug cover; 131, first plug;

[0062] 200, salt box; 201, salt cavity; 202, salt liquid outlet; 203, liquid passing channel; 210, box body; 211, liquid outlet well; 212, first well section; 213, second well section; 220, salt grille; 221, well cover; 222, liquid passing port; 223, liquid passing space;

[0063] 300, Waterway board; 301, Water inlet channel; 302, Water inlet; 303, Water outlet; 304, Brine inlet; 306, Water outlet channel; 307, Water passing inlet; 308, Water passing outlet; 309, Positioning hole; 310, Regeneration chamber; 311, Piston chamber; 312, Duct chamber; 313, Duct cavity body; 314, Mounting hole; 315, First side; 316, Second side; 320, Cover body; 330, Pipe body; 331, First pipe section; 332, Second pipe section; 333, Third pipe section; 334, Fourth pipe section; 335, Water guiding rib

[0064] 400, Regeneration piston; 403, Liquid guiding channel; 404, Liquid guiding inlet; 405, Liquid guiding outlet; 410, Piston; 411, Piston sealing ring; 420, First duct; 421, First sealing ring; 422, Second sealing ring; 430, Second duct; 431, Card hole

[0065] 500, Button; 510, Pressing disk; 520, Connecting column; 521, Card projection; 522, Avoidance opening

[0066] 600, Plug cover; 610, Guide hole; 611, Disk hole section; 612, Column hole section; 613, Button sealing ring

[0067] 700, Adapter

[0068] 800, Flow regulating mechanism; 801, Mounting base; 802, Check valve; 803, Main flow channel; 804, Branch flow channel; 810, Valve seat; 811, First ring body; 812, Second ring body; 813, Connecting rib; 814, Flow through cavity; 820, Valve plug; 821, Second plug head; 822, Guide rod; 823, Fourth sealing ring; 830, Elastic member; 840, Third sealing ring; 851, Mounting part; 852, Connecting part; 853, Thread structure

[0069] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0070] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0071] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0072] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "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 scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. 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.

[0073] 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, a water pump is usually provided in the salt tank, and the water pump is used to pump the brine to the resin tank. This solution results in a complex structure of the water softener and a high product cost.

[0074] In view of this, the present invention provides a water softener, which can save the structural setting of the water pump and its related water circuits, thereby simplifying the structure of the water softener and reducing the product cost of the water softener.

[0075] Please refer to Figure 1 , in an embodiment of the present invention, the water softener includes a resin tank 100 and a salt tank 200. 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 arranged above the resin tank 100 and is provided with a brine outlet 202. The brine outlet 202 is communicated with the water inlet 102, and the brine in the salt tank 200 flows into the resin tank 100 by gravity.

[0076] In the technical solution of the present invention, since the salt tank 200 is arranged above the resin tank 100, the hydrostatic pressure difference corresponding to the height difference between the liquid level of the brine in it and the water inlet 102 of the resin tank 100 can promote the brine to flow from the salt tank 200 into the resin tank 100. That is to say, the brine in the salt tank 200 of the present invention 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.

[0077] It should be noted that the water softener protected by the present invention includes, but is not limited to, a central water softener and an end water softener. Among them, the end water softener mainly provides soft water for local or individual water-using devices or water outlets, so as to improve the water quality delivered to these water-using devices or water outlets, reduce the impact of hard water on the device structure, human body or clothes, and enhance the comfort of local water use. Specifically, the water-using devices include, but are not limited to, water heaters, washing machines, humidifiers, etc., and the water outlets include, but are not limited to, shower heads, faucets, etc. For example, when the end water softener is used in a bathroom scenario, it can make the water flowing out of the shower head be soft water, so as to improve the water use comfort of users. For the convenience of description, the present invention will take the end water softener applied to the bathroom as an example for explanation.

[0078] In one embodiment, the water inlet 102 is arranged on the top surface of the resin tank 100. The water softener further includes a water circuit board 300 arranged at the water inlet 102 and below the salt box 200. The water circuit board 300 is provided with a water passing cavity, and the salt liquid outlet 202 communicates with the water inlet 102 through the water passing cavity. In this way, the water circuit board 300 covers the water inlet 102 of the resin tank 100 and cooperates with the salt liquid outlet 202 of the connected salt box 200, which can simplify the structure of the resin tank 100 and is beneficial to the manufacturing and forming of the resin tank 100. Of course, in other embodiments, the water circuit board 300 may not be provided, and a structure for cooperatively connecting with the salt box 200 may be directly arranged on the resin tank 100.

[0079] In one embodiment, the water passing cavity includes a regeneration chamber 310, a water inlet channel 301 and a water outlet channel 306 respectively communicating with the regeneration chamber 310. The chamber wall of the regeneration chamber 310 is provided with a salt liquid inlet 304 communicating with the salt liquid outlet 202. The water inlet channel 301 communicates with an external water source, and the water outlet channel 306 communicates with the water inlet 102. The water softener further includes a regeneration piston 400 movably arranged in the regeneration chamber 310 to switch between a regeneration mode and a water production mode; in the water production mode, the water inlet channel 301 is communicated with the water outlet channel 306, and the salt liquid inlet 304 is separated from the water outlet channel 306; in the regeneration mode, the salt liquid inlet 304 is communicated with the water outlet channel 306, and the water inlet channel 301 is separated from the water outlet channel 306.

[0080] Specifically, in the water production mode, the water inlet channel 301 is communicated with the water outlet channel 306. The external water source flows through the regeneration chamber 310 to the water inlet 102 and then into the resin chamber 101. After being softened by the resin particles in the resin chamber 101, it is converted into soft water, and the softened soft water flows out through the water outlet 103 and is supplied externally. At this time, the salt liquid inlet 304 is separated from the water outlet channel 306, so the salt box 200 and the resin tank 100 cannot be conducted through the regeneration chamber 310, and the salt liquid cannot enter the resin chamber 101.

[0081] In the regeneration mode, the salt solution inlet 304 is in communication with the water outlet channel 306. 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 103. At this time, the water inlet channel 301 is separated from the water outlet channel 306. Therefore, the external water source cannot enter the resin tank 100 through the regeneration chamber 310.

[0082] After the regeneration piston 400 is driven to switch from the position corresponding to the water production mode to the position corresponding to the regeneration mode, the water softener enters the regeneration mode and uses the salt solution in the salt tank 200 to achieve the regeneration effect on the resin particles in the resin tank 100. After the regeneration piston 400 is driven to switch from the position corresponding to the regeneration mode to the position corresponding to the water production mode, the water softener resumes the water production mode and uses the salt solution in the salt tank 200 to achieve the regeneration effect on the resin particles in the resin tank 100.

[0083] In this embodiment, by setting the regeneration chamber 310 and the regeneration piston 400, the switching between the water production mode and the regeneration mode of the water softener is realized, and the structure is simple and easy to implement. Among them, the driving force source of the regeneration piston 400 can be either the manual drive of the user or the electric control drive of a driving member such as a motor, or the pressure difference on both sides of the regeneration piston 400.

[0084] In one embodiment, after the regeneration piston 400 is acted on by the water inlet pressure of the external water source, it can switch from the regeneration mode to the water production mode. Specifically, when the user needs to use the water softener to produce soft water and opens 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, 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, thereby prompting the water softener to automatically resume the water production mode to achieve the effect of generating soft water by using the resin particles in the resin tank 100.

[0085] In this embodiment, 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, which 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.

[0086] In one embodiment, the water inlet channel 301 and the water outlet channel 306 extend in the same direction and are disposed on opposite sides of the regeneration chamber 310. In this way, in the water production mode, the raw water flows from the water inlet channel 301 into the regeneration chamber 310 and then into the water outlet channel 306, and the process is basically along the same direction, which can reduce the frictional loss of the raw water pressure along the way, thus being beneficial to increasing the pressure when it enters the resin tank 100, improving the softening rate and effect, and at the same time increasing the water supply pressure of the softened water. Of course, in other embodiments, the water inlet channel 301 and the water outlet channel 306 may extend in different directions, or the water inlet channel 301 and the water outlet channel 306 may be disposed on the same side of the regeneration chamber 310.

[0087] 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, and 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. In this way, 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.

[0088] Specifically, the piston 410 can move along the extending direction of the regeneration chamber 310. When the piston 410 moves to a position where at least a part of the water inlet 302 and the water outlet 303 are 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 .

[0089] When the piston 410 moves to the point where the water inlet 302 is located at the first side 315 and the water outlet 303 is completely not exposed at the first side 315, the water inlet 302 and the water outlet 303 are blocked by the piston 410. At this point, the water outlet 303 and the salt solution inlet 304 are connected. The water softener enters the regeneration mode. Figure 4 and Figure 6 .

[0090] In the regeneration mode, after the salt solution flows into the resin tank 100 from the salt tank 200, the water outlet 303 and the second side 316 space of the regeneration chamber 310 are connected to the atmosphere through the salt solution inlet 304, and the end face of the piston 410 facing the second side 316 is subjected to atmospheric pressure. If the water inlet valve connected to the water inlet 104 is opened at this time, the water inlet 104 is connected to the external water source, and the water source flows into the first side 315 space of the regeneration chamber 310 from the water inlet 302, and 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 facing the second side 316, causing the piston 410 to move from the first side 315 to the second side 316 to the position corresponding to the water production mode. After the piston 410 moves to the position, the water inlet 302 can be connected to the water outlet 303 through the first side 315 space of the regeneration chamber 310, so that the raw water can flow to the water outlet 303 and flow into the resin tank 100.

[0091] It can be understood that the first side 315 and the second side 316 of the regeneration chamber 310 are relative concepts, and the piston 410 is used as the dividing reference. Therefore, when the piston 410 moves, the volume of the first side 315 and the second side 316 will change, but the relative position relationship between the two remains unchanged.

[0092] Of course, in other embodiments, the piston 410 may also move along the first direction so that the water outlet 303 can be connected to the water inlet 302 or the saline inlet 304 on the first side 315 , that is, both the saline inlet 304 and the water inlet 302 utilize the space on the first side 315 of the regeneration chamber 310 .

[0093] See also Figure 3 and Figure 4, in one embodiment, a water inlet 302 and a water outlet 303 are further provided on the chamber wall of the regeneration chamber 310. The water inlet 302 is connected to the water inlet passage 301, and the water outlet 303 is connected to the water outlet passage 306. The regeneration piston 400 is provided with a liquid guiding passage 403, a liquid guiding inlet 404 communicating with the liquid guiding passage 403, and a liquid guiding outlet 405. The liquid guiding inlet 404 is connected to the brine inlet 304, and the liquid guiding outlet 405 is connected to 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 the 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 passage 403 is blocked, thereby blocking the connection between the water outlet 303 and the brine inlet 304. In this way, the brine inlet 304 is indirectly connected to the water outlet 303 through the liquid guiding passage 403, and the water inlet 302 is indirectly connected to the water outlet 303 through the space outside the liquid guiding passage 403 in the regeneration chamber 310, enabling the flow of brine and raw water in the regeneration chamber 310 to be relatively independent, which is conducive to the switching between the water production mode and the regeneration mode.

[0094] Optionally, in this embodiment, both the brine inlet 304 and the water inlet 302 are located on the first side 315. The brine inlet 304 is indirectly connected to the water outlet 303 through a dedicated liquid guiding passage 403, allowing 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 structural compactness. Of course, in other embodiments, the brine inlet 304 may be located on the second side 316, and in this case, the liquid guiding passage 403 and the liquid guiding inlet 404 and the liquid guiding outlet 405 may not be provided.

[0095] Please refer to Figures 3 to 6 , in one embodiment, the regeneration piston 400 moves in the first direction and includes a piston 410 and a first conduit 420. The first conduit 420 is connected to the side of the piston 410 close to the brine inlet 304. The liquid guiding passage 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 chamber wall of the piston chamber 311 is provided with a water inlet 302 and a water outlet 303, and the chamber wall of the conduit chamber 312 is provided with a brine inlet 304. The piston 410 is disposed in the piston chamber 311, and the first conduit 420 is provided with a liquid guiding inlet 404 at the end extending into the conduit chamber 312. In this way, the structure is simple and easy to implement the function. Moreover, the water inlet 302 and the brine inlet 304 are separated by the chamber wall of the conduit chamber 312, which can reduce the risk of mutual interference of liquid flow in different working modes. Of course, in other embodiments, the first conduit 420 may not be provided.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] See also Figure 5In 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.

[0101] See also Figure 5 In one embodiment, the outer periphery of the first conduit 420 is sleeved with a second sealing ring 422, and the liquid inlet 404 is located on the side of the second sealing ring 422 away from the piston chamber 311. The outer periphery of the second sealing ring 422 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 422, in the regeneration mode, the sealing and 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 inlet 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.

[0102] It can be understood that in the embodiment where the first conduit 420 is provided with the first sealing ring 421 and the second sealing ring 422 at the same time, the first sealing ring 421 and the second sealing ring 422 are respectively arranged on opposite sides of the liquid inlet 404, wherein 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, the first sealing ring 421 and the second sealing ring 422 are both located on the side of the saline inlet 304 close to the piston chamber 311. In 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 saline inlet 304 until the first sealing ring 421 is located on the side of the saline inlet 304 away from the piston chamber 311, and the second sealing ring 422 is still located on the side of the saline inlet 304 close to the piston chamber 311.

[0103] See also Figure 3, in one embodiment, the regeneration piston 400 further includes a piston 410 sealing ring sleeved on the outer peripheral side of the piston 410, and the outer peripheral side of the piston 410 sealing ring abuts against the inner wall surface of the piston chamber 311. Thus, in the regeneration mode, the piston 410 sealing ring 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 410 sealing ring may not be provided.

[0104] Please refer to Figure 9 and Figure 11 , in one embodiment, the water outlet 303 includes a plurality of water outlet grid holes, and the plurality of water outlet grid holes are distributed at intervals along the circumferential direction of the piston 410. Thus, by setting the water outlet 303 in the structure form 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 410 sealing ring gets into the water outlet 303, thereby avoiding the problem that the piston 410 sealing ring 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.

[0105] Please refer to Figures 3 to 6 , in one embodiment, the regeneration piston 400 further includes a second conduit 430. The second conduit 430 is connected to the side of the piston 410 away from the brine inlet 304 and is provided with a liquid guide outlet 405. A part of the liquid guide channel 403 is formed in the second conduit 430, and the liquid guide outlet 405 is connected to the water outlet 303 in both the water production mode and the regeneration mode. That is, 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 conductive 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, a part of the liquid guide channel 403 is formed in the piston 410, and the liquid guide outlet 405 is provided on the piston 410.

[0106] 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, and the axis of the water inlet 302 is arranged outside the conduit cavity 313. That is, the arrangement position of the water inlet 302 is adjusted to deviate as much as possible from the protruding structure of the conduit cavity 313. 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 is directly facing 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 deviate as much as possible from the protruding structure of the conduit cavity 313, 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 also pass through the conduit cavity 313.

[0107] 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. In this way, the structural compactness of the water circuit board 300 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 also be located above the conduit cavity 313, or in front of the conduit cavity 313.

[0108] 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 axis 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 back to front.

[0109] Please refer to Figure 5 and Figure 7 , in one embodiment, the water softener further includes a button 500 connected to the regeneration piston 400, and at least a part of the button 500 is exposed outside the water circuit board 300. That is, 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 surface of the water softener. Such a design is more in line with the user's usage habits, which is convenient for the user to operate the button 500 and check whether the button 500 is pressed in place.

[0110] Please refer to Figure 4 and Figure 7, in one embodiment, the waterway board 300 is provided with an installation hole 314 communicating with the regeneration chamber 310. The water softener 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 regeneration piston 400. In this way, the structure is simple and easy to install.

[0111] Specifically, during the assembly of 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 waterway board 300 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.

[0112] 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 are connected and communicate with each other. The pressing disk 510 can be received in the disk hole section 611. The connecting column 520 movably passes 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, on the premise of allowing the button 500 to move in the first direction, the sealing effect between the button 500 and the guiding hole 610 can be improved, thereby avoiding the problem that the liquid in the regeneration chamber 310 leaks 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 in the disk hole section 611, which can reduce the risk that the pressing disk 510 protrudes and is exposed outside the guiding hole 610 and is accidentally pushed.

[0113] Please refer to together Figure 3, optionally, in this embodiment, the water softener further includes a button sealing ring 613. The button sealing ring 613 is embedded and installed on the hole wall of the column hole section 612, and the inner peripheral side of the button 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 button sealing ring 613. The structure is simple and easy to implement. Secondly, the button sealing ring 613 is embedded on the hole wall of the column hole section 612, so that the button sealing ring 613 is stationary relative to the plug cover 600, which can reduce the problem that the button sealing ring 613 is displaced after following the connecting column 520 to move multiple times, resulting in a weakened sealing effect. Of course, in other embodiments, the button sealing ring 613 may not be provided.

[0114] 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, adding the second conduit 430 is beneficial to shortening the length of the connecting column 520, and using the clamping and fixing effect of the clamping protrusion 521 and the clamping hole 431 to realize the installation and fixation of the connecting column 520 and the regeneration piston 400. The structure is simple and easy to install. Of course, in 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 these 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.

[0115] 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 may be provided on the second conduit 430, and the clamping hole 431 may be provided on the connecting column 520.

[0116] It should be noted that in the embodiment where the regeneration piston 400 is provided with a second conduit 430, and the second conduit 430 is provided with a liquid guiding channel 403 and a liquid guiding outlet 405, the second conduit 430 is reused as an installation structure for connecting the button 500. In this way, it is beneficial to simplify the structure of the water softener and reduce its product cost.

[0117] In one embodiment, the card hole 431 is provided through the side wall of the liquid guide channel 403, and the card projection 521 is provided on the outer side surface of the connecting column 520. The end of the connecting column 520 can be inserted into the liquid guide channel 403 so that the card projection 521 can be fixed on the card hole 431. An avoidance opening 522 is provided on the connecting column 520 corresponding to the liquid guide 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 card projection 521 is provided on the inner side surface of the connecting column 520.

[0118] Please refer to Figure 14 and Figure 16 In this embodiment, optionally, the liquid guide outlet 405 penetrates through both the end face and the circumferential side face of the second conduit 430, and the avoidance opening 522 penetrates through both the end face and the circumferential side face of the connecting column 520. In this way, it is convenient for the second conduit 430 and the connecting column 520 to be manufactured and formed with the liquid guide outlet 405 and the avoidance opening 522.

[0119] Optionally, both the liquid guide outlet 405 and the card hole 431 are provided with two, and the liquid guide outlet 405 and the card hole 431 are alternately distributed at intervals along the circumferential direction of the second conduit 430. It can be understood that two avoidance openings 522 and card projections 521 are also correspondingly provided on the connecting column 520, and the avoidance openings 522 and the card projections 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 guide outlet 405 can be increased, which is beneficial to the outflow of the brine from the liquid guide channel 403 in the regeneration mode; on the other hand, the two sets of matching structures composed of the card projection 521 and the card 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 liquid guide outlet 405 or card hole 431 can be provided, or three or more can be provided.

[0120] The present invention also proposes a water softener. Please refer to Figure 1 and Figure 2 This water softener includes a resin tank 100, a salt box 200 and the aforementioned water softener. The specific structure of this water softener refers to the above embodiments. Since this water softener adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above 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 box 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 water circuit board 300 communicates with the water inlet 102, and the brine inlet 304 communicates with the brine outlet 202.

[0121] Please refer to Figures 7 to 10, in one embodiment, the water softener further includes a water circuit board 300 disposed at the water inlet 102. The water circuit board 300 is provided with a water passage, a water inlet 307 communicating with the water passage, and a water outlet 308. The water inlet 307 is communicated with an external water source, the water outlet 308 is communicated with the water inlet 102, the water passage includes a regeneration chamber 310, a water inlet passage 301 and a water outlet passage 306. The water inlet 307 is disposed at the water inlet end of the water inlet passage 301, and the water outlet 308 is disposed at the water outlet end of the water outlet passage 306.

[0122] 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 is communicated with the water inlet 102. The water passage 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, so as to facilitate the more uniform distribution of the raw water to different areas in the resin tank 100, thereby improving the softening rate and effect of the resin tank 100.

[0123] 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 cooperating the upper water distributor 120 with the first pipe section 331, it can further promote the more uniform 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 120 may not be provided.

[0124] Please refer to Figure 2 、 Figures 8 to 10 , in one embodiment, the top wall of the water circuit board 300 is integrally formed with the first pipe section 331, and the side wall of the water circuit board 300 is provided with a forming hole 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.

[0125] 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 first plug 131 at the end extending into the water circuit board 300, and the first plug 131 is hermetically inserted into the end pipe orifice of the first pipe section 331. In this way, by using the first plug 131 to block, one end of the first pipe section 331 away from the second pipe section 332 forms a closed structure, 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 first plug 131.

[0126] Please refer to Figure 7 and Figure 8 , in one 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.

[0127] Please refer to 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 334 are arranged intersectingly, the water flow flowing from the fourth pipe section 334 into the third pipe section 333 needs to turn before flowing into the second pipe section 332 from the third pipe section 333. By providing the water guiding ribs 335, the turning water flow can be rectified, so as 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.

[0128] The channel 301 is formed in the third pipe section 333, the regeneration chamber 310 is formed in the second pipe section 332, and the water outlet channel 306 is formed in the first pipe section 331.

[0129] Please refer to Figure 2, in one embodiment, the resin tank 100 is integrally formed with a water inlet channel 105. The water inlet channel 105 extends in the up and down direction and is spaced apart from the resin cavity 101. The lower end of the water inlet channel 105 forms a water inlet 104, and the upper end of the water inlet channel 105 is opposite to and communicated with the fourth pipe section 334. Specifically, raw water flows into the water inlet channel 105 from the water inlet 104, flows into the fourth pipe section 334 from bottom to top, 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 to the water inlet 102 through the water passing outlet 308 in the middle of the first pipe section 331. 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, it may also be that the water softener further includes a water inlet pipe installed on the resin tank 100, and the water inlet pipe is formed with a water inlet channel 105.

[0130] Optionally in this embodiment, at least part of the water inlet channel 105 protrudes from the outer side surface of the resin cavity 101. In this way, the space occupied by the water inlet channel 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, it may also be that the water inlet channel 105 is completely received inside the outer side surface of the resin tank 100.

[0131] 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 300 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.

[0132] 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, and it is beneficial to shorten the assembly working hours of the water circuit board 300 and the resin tank 100. Of course, in other embodiments, it may also be that the cover 320 is installed on the water inlet 102 through a clamping structure, or the edge of the cover opening of the cover 320 is adhesively fixed to the edge of the water inlet 102.

[0133] In one embodiment, the salt box 200 is detachably installed on the water circuit board 300. In this way, the salt box 200 can be detached from the water circuit board 300 to be separately cleaned, repaired or replaced, thereby improving the use convenience of the water softener. Of course, in other embodiments, it may also be that the salt box 200 is welded or adhesively fixed to the water circuit board 300.

[0134] In one embodiment, one of the water channel plate 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 corresponding to the positioning holes 309, and the positioning posts are inserted into the positioning holes 309. In this way, the structure is simple and easy to implement.

[0135] Please refer to Figure 7 , optionally in this embodiment, the axis of the positioning hole 309 extends in the up and down direction and is arranged on the top wall of the water channel plate 300, the positioning post is arranged 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 channel plate 300, and at least two positioning holes 309 are spaced apart along the width direction of the water channel plate 300. Specifically, the positioning post is inserted into the positioning hole 309 from top to bottom, and the positioning and installation of the salt box 200 and the water channel plate 300 can be completed at the same time; when disassembling the salt box 200, only the salt box 200 needs to be lifted. In this way, the structure is simple and the installation and disassembly of the salt box 200 are easy. Of course, in other embodiments, the salt box 200 can also be detachably installed with the water channel plate 300 by means of screw connection or snap connection.

[0136] Please refer to Figure 20 and Figure 21 , in one embodiment, the salt box 200 is provided with a liquid outlet well 211 and a well cover 221 covering the liquid outlet well 211, the salt liquid outlet 202 is arranged in the liquid outlet well 211, and a liquid passing port 222 is arranged on the side wall of the well cover 221. A liquid passing space 223 is formed between the outer surface of the liquid outlet well 211 and the well cover 221 at intervals, and the liquid passing space 223 communicates the liquid passing port 222 and the salt liquid outlet 202. In this way, by using the cooperation of the liquid outlet well 211 and the well cover 221, it is possible to prevent large salt lumps from flowing out of the salt liquid outlet 202 together with the salt liquid, thereby reducing the problem that the internal space of the water channel plate 300 is blocked by salt lumps. At the same time, it can also maintain the stability of the salt liquid concentration flowing into the resin tank 100. Of course, in other embodiments, the liquid outlet well 211 and the well cover 221 may not be provided.

[0137] Please refer to Figure 18 and Figure 19, in one embodiment, the salt tank 200 includes a tank body 210 and a salt grille 220. The salt grille 220 is disposed inside the tank body 210 to divide the inner cavity of the tank body 210 into a liquid passing channel 203 and a salt cavity 201 located above the liquid passing channel 203. The liquid passing channel 203 communicates with the salt cavity 201 through the grid holes of the salt grille 220 and is connected to a liquid outlet 222. A liquid outlet well 211 is disposed on the bottom wall surface of the tank body 210, and a well cover 221 is formed on the salt grille 220. Specifically, the inner cavity of the tank body 210 is divided into a liquid passing channel 203 and a salt cavity 201 by the salt grille 220. Salt blocks are stored in the salt cavity 201, and the salt grille 220 can prevent the salt blocks from entering the liquid passing channel 203, thus playing a role of pre-filtration. In this way, it can avoid the problem that salt blocks enter the liquid passing channel 203 and block the liquid outlet 222, resulting in difficult outflow of salt liquid. The structure is simple and easy to implement. Of course, in other embodiments, the salt grille 220 may not be provided.

[0138] Please refer to Figure 20 , in one embodiment, the liquid outlet well 211 includes a first well section 212 and a second well section 213. The first well section 212 is disposed inside the salt tank 200 and cooperates with the well cover 221, and the second well section 213 is disposed outside the salt tank 200. The water softener further includes a water circuit board 300 and an adapter 700 disposed on the water circuit board 300. The water circuit board 300 is provided with a water passing cavity and a salt liquid inlet 304. The salt liquid inlet 304 communicates with the water inlet 102 through the water passing cavity. The adapter 700 is hermetically inserted into the second well section 213 and communicates the salt liquid outlet 202 and the salt liquid inlet 304. In this way, the connection between the second well section 213 and the water circuit board 300 is realized through the adapter 700, which is beneficial to simplifying the structures of the salt tank 200 and the water circuit board 300 and improving the sealing connection effect between the two. Of course, in other embodiments, the adapter 700 may not be provided.

[0139] In the related art, the water outlet flow rate of the resin tank 100 in the regeneration mode is relatively large, resulting in a short residence time of the salt liquid in the resin tank 100. The salt liquid flows away without fully reacting with the resin particles in a short time. It can be seen that the reaction between the salt liquid and the resin particles in the resin tank 100 in the regeneration mode is not sufficient, resulting in poor regeneration effect.

[0140] To address the problem of poor regeneration effect, please refer to Figure 2 , in the embodiment of the present invention, optionally, the resin tank 100 is provided with a water outlet 103 communicating with the resin cavity 101. The water softener further includes a flow rate adjusting mechanism 800. The flow rate adjusting mechanism 800 is disposed at the water outlet 103 to adjust the water outlet flow rate. The flow rate of the flow rate adjusting mechanism 800 in the regeneration mode is less than that in the water production mode.

[0141] By providing a flow rate regulating mechanism 800 at the water outlet 103 of the resin tank 100, the flow rate regulating mechanism 800 can reduce the flow rate when the water softener enters the regeneration mode. It can be understood that under the condition that the total amount of brine flowing into the resin tank 100 is equal, when the brine outlet flow rate becomes smaller, the residence time of the brine in the resin tank 100 can be prolonged, so that the brine has more sufficient time to react with the resin particles, thereby improving the regeneration effect. Secondly, the softened water in the resin tank 100 can still be supplied at a large flow rate in the water production mode, so as to achieve the goal of large flux in the water production mode and high salt efficiency in the regeneration mode, and further can better meet the use requirements, and can save the consumption rate of salt blocks and reduce the frequency of users replenishing salt blocks.

[0142] It can be understood that the flow rate regulating mechanism 800 of the embodiment of the present invention can either actively regulate its water flow rate or passively regulate its water flow rate.

[0143] For example, in one embodiment, the brine pressure flowing into the water outlet 103 in the regeneration mode is P1, and the raw water pressure flowing into the water outlet 103 in the water production mode is P2, and P1 < P2. In this embodiment, the flow rate regulating mechanism 800 is configured as a passive regulating structure, and its own opening degree will change due to the difference between the brine pressure and the raw water pressure, so that the water flow rate changes. Specifically, in the water production mode, the raw water pressure is relatively high, so the opening degree of the flow rate regulating mechanism 800 is large and the water flow rate is large. In the regeneration mode, the brine pressure is relatively low, so the opening degree of the flow rate regulating mechanism 800 is small and the water flow rate is small. In this way, the electric control structure and electric control circuit of the flow rate regulating mechanism 800 can be saved, thereby reducing the product cost of the water softener and being beneficial to reducing the electrical failure rate of the water softener.

[0144] It should be noted that the brine pressure does not specifically refer to that the liquid flowing into the water outlet 103 is only brine, but refers to that the source of this pressure is the brine flowing from the salt tank 200 into the resin tank 100. Similarly, the raw water pressure does not specifically refer to that the liquid flowing into the water outlet 103 is raw water. It can be understood that at this time, the water flowing into the water outlet 103 should be the softened water after undergoing the softening effect. Here, the raw water pressure also refers to that the source of this pressure is the raw water flowing from the water inlet 104 into the resin tank 100.

[0145] Of course, in other embodiments, the flow rate regulating mechanism 800 can also be configured as an active regulating mechanism. For example, in another embodiment, the flow rate regulating mechanism 800 is configured as a flow regulating valve with adjustable opening degree, specifically, it can be an electromagnetic valve, etc. Among them, the flow regulating valve is electrically connected to the control circuit board of the water softener, so that it can be controlled by the electrical signal of the control circuit board. When the water softener switches functions between the water production mode and the regeneration mode, the control circuit board can timely control the flow regulating valve to adjust the flow rate.

[0146] In yet another embodiment, the water outlet 103 includes an independent main water outlet 103 and a secondary water outlet 103. The flow rate adjusting mechanism 800 includes a plugging member movably disposed in the resin tank 100. The plugging member selectively plugs the main water outlet 103 and the secondary water outlet 103. The flow cross-sectional area of the main water outlet 103 is larger than that of the secondary water outlet 103, and the main water outlet 103 is plugged by the plugging member in the regeneration mode. That is to say, the main water outlet 103 with a large flow rate corresponds to the opening of the water production mode, and the secondary water outlet 103 with a small flow rate corresponds to the opening of the regeneration mode. In this way, by switching the position of the plugging member, the plugging of the main water outlet 103 and the secondary water outlet 103 is respectively completed, and the structure is simple and easy to implement.

[0147] Among them, the plugging member can be switched in position either by electric drive or by manual drive. For example, the flow rate adjusting mechanism 800 further includes a driving member drivingly connected to the plugging member. The driving member includes, but is not limited to, a motor, a pneumatic cylinder or a hydraulic cylinder. Under the action of the driving member, the plugging member can move and selectively plug the main water outlet 103 and the secondary water outlet 103. Among them, the displacement trajectory of the plugging member can be set according to the layout of the main water outlet 103 and the secondary water outlet 103. For example, the main water outlet 103 and the secondary water outlet 103 are distributed in a straight line direction, and the plugging member can move between the main water outlet 103 and the secondary water outlet 103 in a translational manner along the straight line direction and selectively cover the main water outlet 103 and the secondary water outlet 103.

[0148] The salt box 200 is stacked above the resin tank 100. The hydrostatic pressure corresponding to the height difference from the liquid level of the salt solution in the salt box 200 to the water outlet 103 of the resin tank 100 is basically equal to the salt solution pressure P1 flowing into the water outlet 103 in the regeneration mode. It can be understood that the size and volume of the end soft water machine are usually small to save the space occupied by the device in the home, that is, the total height of the soft water machine is not very high. And the water inlet 104 of the resin tank 100 is usually connected to an external water source, such as tap water. Therefore, in the water production mode, the raw water pressure flowing into the water outlet 103 is approximately equal to the water pressure of tap water, and thus has a relatively large pressure. Therefore, the hydrostatic pressure from the liquid level of the salt solution in the salt box 200 to the water outlet 103, that is, the salt solution pressure P1, will have a large difference from the raw water pressure P2, which is conducive to improving the response accuracy of the flow rate adjusting mechanism 800.

[0149] Please refer to Figure 22 and Figure 23 wherein, Figure 22The arrow indicates the water outlet direction. In one embodiment, optionally, the flow regulating mechanism 800 includes a mounting base 801 and a check valve 802. The mounting base 801 is provided with a main flow channel 803 and a branch flow channel 804, and the water outlet flow rate of the main flow channel 803 is greater than that of the branch flow channel 804. The check valve 802 is arranged in the main flow channel 803. Among them, the hydrostatic pressure corresponding to the highest water level of the salt tank 200 is less than the minimum opening pressure of the check valve 802. The check valve 802 blocks the main flow channel 803 in the regeneration mode, and the check valve 802 conducts the main flow channel 803 in the water production mode. The branch flow channel 804 is conducted in both the regeneration mode and the water production mode.

[0150] In this embodiment, the hydrostatic pressure corresponding to the highest water level of the salt tank 200 refers to the hydrostatic pressure from the liquid level of the salt solution in the salt tank 200 to the water outlet 103 of the resin tank 100 when the liquid level of the salt solution in the salt tank 200 reaches the highest water level. That is, in the regeneration mode, even if the salt solution in the salt tank 200 reaches the highest water level, it cannot cause the check valve 802 to open, so that the main flow channel 803 where the check valve 802 is located cannot be conducted, and the liquid in the resin tank 100 can only flow out through the small-flow branch flow channel 804. In the water production mode, due to the large pressure of the raw water flowing into the resin tank 100 from the water inlet 104 and greater than the minimum opening pressure of the check valve 802, the raw water pressure P2 is sufficient to cause the check valve 802 to open, so that the softened water prepared in the resin tank 100 can flow out through the large-flow main flow channel 803 and the small-flow branch flow channel 804 at the same time, thereby meeting the demand for supplying softened water with a large flow rate.

[0151] For example, in one embodiment, the minimum opening pressure of the check valve 802 can be set to 4 kPa. This minimum opening pressure roughly corresponds to the hydrostatic pressure of a water column with a height of 40 cm, and the height difference from the highest water level of the salt tank 200 to the water outlet 103 is set to be less than 40 cm, or the overall height of the water softener is directly set to be less than 40 cm. In this way, in the water production mode, the inlet pressure is large, and the liquid in the resin tank 100 can easily push and open the check valve 802, so that it can flow out through the main flow channel 803 and the branch flow channel 804 at the same time to achieve the purpose of unrestricted soft water output. In the regeneration mode, the salt solution in the salt tank 200 flows into the resin tank 100 by gravity to carry out a regeneration reaction with the resin particles. The liquid in the resin tank 100 is not enough to open the check valve 802. At this time, the check valve 802 is in a closed state, and the waste water after the regeneration reaction can only flow out through the branch flow channel 804 to achieve the purpose of restricting the output of the regeneration waste water.

[0152] Thus, the structure of this embodiment is simple and easy to implement. By cleverly utilizing the relationship between the minimum opening pressure of the check valve 802 and the highest water level of the salt tank 200, it can achieve the characteristics that the water outlet flow rate of soft water is not restricted under high-pressure water inlet during the water production mode operation, and the water outlet flow rate of wastewater is restricted under gravity water conveyance during the regeneration mode operation, thereby better meeting the requirements of high flux and high salt efficiency of the device.

[0153] Of course, in other embodiments, the brine in the salt tank 200 may not flow into the resin tank 100 by gravity. For example, a water pump is provided at the brine outlet 202 of the salt tank 200, and the brine is pumped into the resin tank 100 by the water pump. At this time, the pumping pressure of the water pump can be set to be less than the raw water pressure, so as to meet the requirement that the brine pressure P1 is less than the raw water pressure P2, so that the flow regulating mechanism 800 can passively adjust its water flow rate according to the water pressure.

[0154] It can be understood that there are various structural forms of the main flow channel 803 and the branch flow channel 804. For example, please refer to Figures 22 to 24 , in an embodiment, optionally, the inner wall surface of the main flow channel 803 is recessed to form the branch flow channel 804. That is, the branch flow channel 804 communicates with the peripheral side wall of the main flow channel 803. In this way, the structure of the mounting seat 801 can be made more compact, which is beneficial to the miniaturized design of the flow regulating mechanism 800, and further beneficial to reducing the size and volume of the water softener.

[0155] Of course, in other embodiments, the branch flow channel 804 and the main flow channel 803 may also be arranged at intervals. For example, the branch flow channel 804 and the main flow channel 803 are formed at intervals on the mounting seat 801, and the branch flow channel 804 and the main flow channel 803 may extend in the same direction or in different extending directions.

[0156] Please refer to Figure 22 and Figure 23 , in the embodiment where the branch flow channel 804 is formed by recessing the inner wall surface of the main flow channel 803, optionally, the branch flow channel 804 extends in the same direction as the main flow channel 803. For example, when the main flow channel 803 is configured as a through-hole structure with its axis extending vertically, the axis of the branch flow channel 804 also extends vertically. In this way, on the one hand, it can improve the flow smoothness of the liquid in the main flow channel 803 and the branch flow channel 804, avoid the interference between the two streams of liquid flowing through them, and thus improve the water outlet smoothness and stability of the water softener. On the other hand, it is beneficial to simplify the structure of the mounting seat 801 and reduce its manufacturing and forming cost. Of course, in other embodiments, the branch flow channel 804 may also extend along a three-dimensional spiral line on the inner wall surface of the main flow channel 803.

[0157] Please refer to Figure 24, in one embodiment, further, there are at least two branch channels 804, and the at least two branch channels 804 are spaced apart and distributed on the outer periphery of the main channel 803. Specifically, optionally, there are two branch channels 804. It can be understood that when the branch channel 804 is formed by the depression of the inner wall surface of the main channel 803, it is equivalent to forming a branch channel 804 by respectively depressing at multiple positions along the circumferential direction on the inner wall surface of the main channel 803. Thus, in the regeneration mode, when the liquid in the resin tank 100 flows out through the multiple branch channels 804, the problem that the check valve 802 shakes due to the impact of the water flow in the main channel 803 can be avoided, thereby improving the installation stability and reliability of the check valve 802, and also reducing the risk of abnormal noise caused by the structural shaking. Of course, in other embodiments, there may also be only one branch channel 804.

[0158] It can be understood that there are various structural forms of the check valve 802. For example, please refer to Figure 22 and Figure 23 , in one embodiment, optionally, the check valve 802 includes a valve seat 810, a valve plug 820, and an elastic member 830. The valve seat 810 is sealingly connected to the inner wall surface of the main channel 803 and is provided with a flow cavity 814 communicating the water inlet end and the water outlet end of the main channel 803. The valve plug 820 is movably disposed in the flow cavity 814, and the elastic member 830 connects the valve plug 820 and the valve seat 810. Specifically, in the water production mode, the pressure of the raw water is sufficient to overcome the elastic force exerted by the elastic member 830 on the valve plug 820, so that the valve plug 820 can move from the position blocking the flow cavity 814 to the position conducting the flow cavity 814, thereby enabling the water inlet end and the water outlet end of the main channel 803 to be mutually conducted through the flow cavity 814. In the regeneration mode, the pressure of the brine is not sufficient to overcome the elastic force exerted by the elastic member 830 on the valve plug 820, and the valve plug 820 remains in the position blocking the flow cavity 814. Therefore, the water inlet end and the water outlet end of the main channel 803 cannot be mutually conducted through the flow cavity 814. In this way, the structure is simple and easy to implement.

[0159] Of course, in other embodiments, the check valve 802 can also be configured in other structural forms as long as the goals of not restricting the flow under high pressure and restricting the flow under low pressure can be achieved.

[0160] It can be understood that the elastic force exerted by the elastic member 830 on the valve plug 820 can urge the valve plug 820 to remain in the state of blocking the flow cavity 814. That is to say, the minimum opening pressure of the check valve 802 is related to the structural performance of the elastic member 830. The minimum opening pressure of the check valve 802 can be changed by selecting the existing check valve 802 products on the market, or directly replacing and adjusting the elastic member 830 of the existing products, so that the minimum opening pressure of the check valve 802 can be adapted to different water softener products. For example, for water softener products with a relatively large overall height dimension and a relatively high maximum water level of the salt tank 200, a check valve 802 with a relatively large minimum opening pressure needs to be selected; for water softener products with a relatively small overall height dimension and a relatively low maximum water level of the salt tank 200, a check valve 802 with a relatively small minimum opening pressure can be selected.

[0161] Please refer to Figure 22 and Figure 23 , in an embodiment, optionally, the check valve 802 further includes a third sealing ring 840 sleeved on the outer peripheral surface of the valve seat 810. The outer peripheral surface of the third sealing ring 840 abuts against the inner wall surface of the main flow channel 803. A branch flow channel 804 is formed by recessing the inner wall surface of the main flow channel 803. At least a part of the wall surface of the branch flow channel 804 is spaced from the third sealing ring 840. In this way, the sealing cooperation effect between the valve seat 810 and the inner wall surface of the main flow channel 803 can be improved through the third sealing ring 840. It can be understood that in the case where the third sealing ring 840 is provided, since the branch flow channel 804 is directly formed on the inner wall surface of the main flow channel 803, it is necessary to prevent the third sealing ring 840 from being completely embedded in the branch flow channel 804 and the structure of the third sealing ring 840 completely blocking the branch flow channel 804, so as to ensure that the flow regulating mechanism 800 still has a certain effective flow cross-sectional area in the regeneration mode. Of course, in other embodiments, the third sealing ring 840 may not be provided.

[0162] In this embodiment, the problem that the third sealing ring 840 is completely embedded in the branch flow channel 804 can be avoided by selecting the third sealing ring 840 and designing the structures of the main flow channel 803 and the branch flow channel 804. For example, a relief annular groove is formed by recessing the wall surface of the branch flow channel 804 corresponding to the third sealing ring 840. The groove width of the relief annular groove is greater than the thickness of the third sealing ring 840, and the outer diameter of the relief annular groove is 1.1 to 1.5 times the outer diameter of the third sealing ring 840.

[0163] Please refer to Figure 23, in one embodiment, optionally, the valve seat 810 includes a first annular body 811, a second annular body 812, and a plurality of connecting ribs 813 connecting the first annular body 811 and the second annular body 812. The plurality of connecting ribs 813 are circumferentially spaced apart along the first annular body 811, and a cavity outlet of the flow cavity 814 is formed between two adjacent connecting ribs 813. The inner cavity of the first annular body 811 is configured as a cavity inlet of the flow cavity 814. The valve plug 820 is movably disposed in the first annular body 811.

[0164] Specifically, the first annular body 811 and the second annular body 812 are spaced apart along the extending direction of the connecting ribs 813. The first annular body 811, the second annular body 812, and the connecting ribs 813 together define a cavity outlet of the flow cavity 814. When the valve plug 820 is sealingly inserted into the inner cavity of the first annular body 811, the flow cavity 814 is blocked and not conducting; when the valve plug 820 is withdrawn from the first annular body 811, the cavity inlet and the cavity outlet of the flow cavity 814 are conducted, and the flow cavity 814 can conduct the water inlet end and the water outlet end of the main flow channel 803. In this way, the structure is simple and easy to implement. The ends of the plurality of connecting ribs 813 away from the first annular body 811 can be connected together through the second annular body 812 to improve the structural stability of the connecting ribs 813.

[0165] Of course, in other embodiments, the valve seat 810 can also be configured in other structural forms. For example, only the first annular body 811 and a plurality of connecting ribs 813 are provided.

[0166] To improve the displacement smoothness and stability of the valve plug 820, please refer to Figure 22 and Figure 23 , in one embodiment, optionally, the valve plug 820 includes a second plug head 821 and a guide rod 822 connected to each other. The guide rod 822 is slidably disposed in the second annular body 812, and the second plug head 821 is slidably disposed in the first annular body 811. In this way, in this embodiment, the second annular body 812 also plays a guiding role. The guide rod 822 cooperates with the second annular body 812, and the second plug head 821 cooperates with the first annular body 811 to jointly improve the displacement smoothness and stability of the valve plug 820. Of course, in other embodiments, the guide rod 822 may not be provided.

[0167] Please refer to Figure 22 and Figure 23 , in one embodiment, optionally, the valve plug 820 further includes a fourth sealing ring 823 sleeved on the outer peripheral surface of the second plug head 821. The outer peripheral surface of the fourth sealing ring 823 abuts against the inner cavity surface of the first annular body 811. In this way, the sealing cooperation effect between the second plug head 821 and the first annular body 811 can be improved through the fourth sealing ring 823, and the structure is simple and easy to implement. Of course, in other embodiments, the fourth sealing ring 823 may not be provided.

[0168] Please refer to Figure 22 andFigure 23 In one embodiment, optionally, the elastic member 830 is disposed around the outer periphery of the guide rod 822 and connected between the second plug 821 and the second ring body 812. Specifically, during the process of the second plug 821 being disengaged from the first ring body 811, the elastic member 830 is compressed and its deformation amount increases. After the water inlet side pressure of the second plug 821 becomes smaller, the acting force of the elastic member 830 can push the second plug 821 to re-insert into the first ring body 811 to achieve the sealing of the flow cavity 814. In this way, the elastic member 830 is disposed around the outer periphery of the guide rod 822, which can improve the smoothness of the displacement of the valve plug 820, and only one elastic member 830 is required to achieve this, with a simple structure and easy implementation. Of course, in other embodiments, multiple elastic members 830 can also be provided, and the multiple elastic members 830 are distributed around the outer periphery of the guide rod 822.

[0169] Optionally, in this embodiment, the elastic member 830 is configured as a compression spring. In this way, the structure is mature, reliable and low-cost. Of course, in other embodiments, the elastic member 830 can also be a tension spring, or a rubber body or a silica gel body.

[0170] Please refer to Figure 22 and Figure 23 In one embodiment, optionally, the mounting base 801 includes a connected mounting portion 851 and a connection portion 852. The check valve 802 is disposed on the mounting portion 851, and the connection portion 852 is provided with a thread structure 853. That is to say, the flow rate regulating mechanism 800 also serves as a connector, and its connection portion 852 can be exposed outside the water softener for external structures such as a three-way valve, a faucet or a water pipe to be installed and connected. Among them, the thread structure 853 can be either an external thread or an internal thread. For example, optionally, in this embodiment, the thread structure 853 is configured as an external thread disposed on the outer peripheral surface of the connection portion 852. Of course, in other embodiments, the connection portion 852 can also be not provided.

[0171] 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 in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water softener, characterized in that: include: A resin tank, provided with a resin cavity and a water inlet connected to the resin cavity; and The salt box is arranged above the resin tank and is provided with a salt solution outlet, the salt solution outlet is communicated with the water inlet, and the salt solution in the salt box flows into the resin tank by gravity.

2. The water softener according to claim 1, characterized in that: The water inlet is arranged on the top surface of the resin tank, and the water softener also includes a waterway plate arranged on the water inlet and located below the salt box, the waterway plate is provided with a water passage cavity, and the salt solution outlet is connected to the water inlet through the water passage cavity.

3. The water softener according to claim 2, characterized in that: The water passage chamber includes a regeneration chamber, a water inlet channel and a water outlet channel respectively connected to the regeneration chamber, a cavity wall of the regeneration chamber is provided with a saline inlet connected to the saline outlet, the water inlet channel is connected to an external water source, and the water outlet channel is connected to the water inlet, and the water softener also includes a regeneration piston, and the regeneration piston is movably arranged in the regeneration chamber to switch between a regeneration mode and a water production mode; In the water production mode, the water inlet channel is connected to the water outlet channel, and the salt solution inlet is separated from the water outlet channel; In the regeneration mode, the salt solution inlet is connected to the water outlet channel, and the water inlet channel is separated from the water outlet channel.

4. The water softener according to claim 3, characterized in that: The water inlet channel and the water outlet channel extend in the same direction and are arranged on two opposite sides of the regeneration chamber.

5. The water softener according to claim 3, characterized in that: The cavity wall of the regeneration chamber is also provided with a water inlet and a water outlet, the water inlet is connected to the water inlet channel, and the water outlet is connected to the water outlet channel; the regeneration piston is provided with a liquid conducting channel, a liquid conducting inlet and a liquid conducting outlet connected to the liquid conducting channel, the liquid conducting inlet is connected to the saline solution inlet, and the liquid conducting outlet is connected to the water outlet, in the water production mode, the liquid conducting inlet and / or the liquid conducting outlet are blocked; in the regeneration mode, the liquid conducting inlet and the liquid conducting outlet are connected.

6. The water softener according to claim 5, characterized in that: The regeneration piston moves along a first direction and comprises a piston and a first conduit, wherein the first conduit is connected to a side of the piston close to the saline solution inlet, the liquid guide channel is at least partially formed on the piston and the first conduit, the regeneration chamber comprises 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 solution inlet, the piston is provided in the piston chamber, and the first conduit is provided with the liquid guide inlet on the end extending into the conduit chamber.

7. The water softener according to claim 6, characterized in that: The end face of the first conduit is closed, the liquid inlet is arranged on the side wall of the first conduit, and the saline inlet is arranged 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 part of the first direction.

8. The water softener according to claim 6, characterized in that: The regeneration piston also includes a second conduit, which is connected to a side of the piston away from the saline solution inlet and is provided with the liquid guide outlet. The liquid guide channel is partially formed on the second conduit, and the liquid guide outlet is connected to the water outlet in both the water production mode and the regeneration mode.

9. The water softener according to claim 3, characterized in that: The water softener further comprises a button connected to the regeneration piston, wherein the button is at least partially exposed outside the waterway plate.

10. The water softener according to claim 9, characterized in that: The water channel plate is provided with an installation hole connected to the regeneration chamber, the water softener also includes a plugging cover arranged on the installation hole, the plugging cover is provided with a guide hole connected to the regeneration chamber, the button includes a pressing plate and a connecting column connected to each other, the end of the connecting column away from the pressing plate passes through the guide hole and is connected to the regeneration piston.

11. The water softener according to claim 3, characterized in that: The regeneration piston can be switched from the regeneration mode to the water production mode after being acted upon by the water inlet pressure of an external water source.

12. The water softener according to claim 11, characterized in that: The cavity wall of the regeneration chamber is further provided with a water inlet and a water outlet, the water inlet is connected to the water inlet channel, and the water outlet is connected to the water outlet channel; the regeneration chamber extends along a first direction, the regeneration piston includes a piston moving along the first direction, the water inlet and the water outlet are staggered 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, the water outlet is at least partially exposed on the first side, the water outlet is connected to the water inlet, and is separated from the saline solution inlet; In the regeneration mode, the water outlet is at least partially exposed on the second side, the water outlet is connected to the saline inlet, and is separated from the water inlet.

13. The water softener according to claim 2, characterized in that: The salt box is detachably mounted on the waterway plate.

14. The water softener according to claim 13, characterized in that: One of the waterway plate and the salt box is provided with a plurality of positioning holes at intervals, and the other is provided with positioning posts corresponding to the positioning holes, and the positioning posts are inserted into the positioning holes.

15. The water softener according to claim 1, characterized in that: The salt box is provided with a liquid outlet well and a well cover covering the liquid outlet well, the salt liquid outlet is provided in the liquid outlet well, a liquid outlet is provided on a side wall of the well cover, a liquid outlet space is formed between the outer surface of the liquid outlet well and the well cover, and the liquid outlet space connects the liquid outlet and the salt liquid outlet.

16. The water softener according to claim 15, characterized in that: The salt box includes a box body and a salt grid. The salt grid is arranged in the box body to divide the inner cavity of the box body into a liquid passage and a salt cavity located above the liquid passage. The liquid passage is connected with the salt cavity through the grid holes of the salt grid and is connected with the liquid outlet. The liquid outlet well is arranged on the bottom wall of the box body, and the well cover is formed on the salt grid.

17. The water softener according to claim 15, characterized in that: The liquid outlet well includes a first well section and a second well section, the first well section is arranged inside the salt box and cooperates with the well cover, and the second well section is arranged outside the salt box; the water softener also includes a waterway plate and an adapter seat arranged on the waterway plate, the waterway plate is provided with a water passage cavity and a salt solution inlet, the salt solution inlet is connected to the water inlet through the water passage cavity, and the adapter seat is sealingly inserted in the second well section and connects the salt solution outlet and the salt solution inlet.

18. The water softener according to claim 1, characterized in that: The resin tank is provided with a water outlet connected to the resin cavity, and the water softener also includes a flow regulating mechanism, which is provided at the water outlet to regulate the water flow rate, and the flow rate of the flow regulating mechanism in the regeneration mode is smaller than the flow rate in the water production mode.

19. The water softener according to claim 18, characterized in that The flow regulating mechanism comprises: The mounting seat is provided with a main flow channel and a branch flow channel, wherein the water flow rate of the main flow channel is greater than the water flow rate of the branch flow channel; and A check valve is arranged in the main flow channel, and the hydrostatic pressure corresponding to the highest water level of the salt box is less than the minimum opening pressure of the check valve; The check valve blocks the main flow channel in the regeneration mode, opens the main flow channel in the water production mode, and the branch flow channel opens in both the regeneration mode and the water production mode.

20. The water softener according to claim 19, characterized in that The inner wall surface of the main flow channel is concave to form the branch flow channel.

21. The water softener according to claim 19, characterized in that The check valve includes a valve seat, a valve plug and an elastic member. The valve seat is sealed and connected to the inner wall surface of the main channel, and is provided with a flow cavity connecting the water inlet end and the water outlet end of the main channel. The valve plug is movably arranged in the flow cavity, and the elastic member connects the valve plug and the valve seat.

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