A water softener

Abstract

The utility model discloses a kind of water softener. Water softener includes shell, at least two softening resin tank, waterway assembly, valve assembly and salt tank, at least two softening resin tank is arranged side by side in first transverse direction, waterway assembly is installed at the top of softening resin tank, resin cavity of waterway assembly and softening resin tank is communicated, valve assembly is located in the side of softening resin tank in second transverse direction, salt tank is located in the side of softening resin tank in second transverse direction. The water softener moves valve assembly from the top of softening resin tank to lateral side portion, reduces the requirement to the height of water softener whole machine, so that softening resin tank can be made higher, and more softening resin can be contained, which is beneficial to improve softening capacity;And by at least two softening resin tank being arranged side by side in first transverse direction, valve assembly and salt tank are located in the side of softening resin tank in second transverse direction, the length of water softener is reduced, and it is more convenient to install for the kitchen space of small length.

Description

Technical Field

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

[0002] A water softener is a water purification device used to reduce the hardness of raw water. Existing water softeners consist of a softening resin tank and a valve head, with the valve head typically located above the resin tank. This results in an excessively tall overall height. Reducing the overall height of the softener necessitates lowering the resin tank, leading to a decrease in the amount of softening resin and significantly impacting the water softening capacity and user experience. Furthermore, existing water softeners are generally installed under the sink, and their elongated shape presents a problem of excessive length, while under-sink spaces are typically small in length and width, making installation difficult. Utility Model Content

[0003] The purpose of this utility model is to provide a water softener with a large capacity and strong softening ability in the softening resin tank, and without the problem of excessive length, making it relatively easy to install.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A water softener includes: a housing; at least two softening resin tanks, which are vertically disposed within the housing and arranged side-by-side in a first transverse direction; a water circuit assembly, which is disposed within the housing and mounted on top of the softening resin tanks, and communicates with the resin chamber of the softening resin tanks; a valve assembly, which is disposed in a second transverse direction on one side of the softening resin tanks and communicates with the water circuit assembly; and a brine tank, which is disposed within the housing and in the second transverse direction on one side of the softening resin tanks.

[0006] Preferably, there are two softening resin tanks, which are arranged in two rows and two columns with the valve assembly and the salt tank.

[0007] Preferably, the housing includes a maintenance cover disposed opposite to the valve assembly, the maintenance cover having a first state of exposing the valve assembly and a second state of concealing the valve assembly.

[0008] Preferably, the outer casing includes a box structure, which includes a separate box body and the maintenance cover.

[0009] Preferably, the outer casing also includes a salt filling cover, which is positioned directly opposite the salt filling port of the salt tank, and the salt filling cover has a third state in which the salt filling port is exposed and a fourth state in which the salt filling port is closed.

[0010] Preferably, the outer shell includes a cover structure, which includes a separate cover body and a salt-adding cover.

[0011] Preferably, the valve assembly includes a main control valve, a bypass valve, an inlet pipe, and an outlet pipe. The main control valve has an inlet channel and an outlet channel. One end of the inlet pipe forms a first inlet, and the other end is connected to the inlet end of the inlet channel through the bypass valve. One end of the outlet pipe forms a first outlet, and the other end is connected to the outlet end of the outlet channel through the bypass valve. The valve assembly has a first state in which the first inlet is connected to the inlet channel and the first outlet is connected to the outlet channel, and a second state in which the first inlet is connected to the first outlet.

[0012] Preferably, the valve assembly further includes a first bend and a second bend, the first bend connecting the outlet end of the inlet channel to the second inlet of the water circuit assembly, and the second bend connecting the inlet end of the outlet channel to the second outlet of the water circuit assembly.

[0013] Preferably, the water circuit assembly includes a first water circuit and a second water circuit, the softening resin tank has a raw water inlet and a soft water outlet, the first water circuit connects the raw water inlet to the raw water outlet of the valve assembly, and the second water circuit connects the soft water outlet to the soft water inlet of the valve assembly; and / or, the water circuit assembly includes a mounting portion, the top of the softening resin tank forms a mounting port, and the mounting portion is detachably connected to the mounting port.

[0014] Preferably, there are two softening resin tanks, including a first resin tank and a second resin tank connected in series. The first water passage connects the raw water inlet of the first resin tank to the raw water outlet of the valve assembly. The softened water outlet of the first resin tank and the raw water inlet of the second resin tank are connected through a third water passage. The second water passage connects the softened water outlet of the second resin tank to the softened water inlet of the valve assembly.

[0015] The beneficial effects of this utility model are:

[0016] The water softener provided by this utility model includes a housing, at least two softening resin tanks, a water circuit assembly, a valve assembly, and a brine tank. The at least two softening resin tanks, the water circuit assembly, and the brine tank are all housed within the housing. The at least two softening resin tanks are arranged side-by-side in a first horizontal direction. The water circuit assembly is installed on the top of the softening resin tanks and communicates with the resin chamber of the softening resin tanks. The valve assembly and the brine tank are located on one side of the softening resin tanks in a second horizontal direction. By moving the valve assembly from the top of the softening resin tanks to the side of the horizontal direction, this water softener reduces the height requirement of the overall machine, allowing the softening resin tanks to be made taller and hold more softening resin, thus improving softening capacity. Furthermore, by arranging the at least two softening resin tanks side-by-side in the first horizontal direction and placing the valve assembly and brine tank on one side of the softening resin tanks in the second horizontal direction, the length of the water softener is reduced, making it easier to install in under-sink spaces with limited length. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the water softener provided by this utility model;

[0018] Figure 2 This is an exploded view of the water softener provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the water softener provided by this utility model after the outer casing has been removed;

[0020] Figure 4 This is a schematic diagram of the water softener provided by this utility model after removing the outer shell and salt tank;

[0021] Figure 5 yes Figure 4 Top view of the structure shown;

[0022] Figure 6 yes Figure 5 A cross-sectional view along the AA direction;

[0023] Figure 7 This is a schematic diagram of the two softening resin tanks and water circuit components of the water softener provided by this utility model.

[0024] In the picture:

[0025] 100. Outer shell; 110. Box structure; 111. Maintenance cover; 112. Box body; 120. Cover structure; 121. Salt filling cover; 122. Cover body; 101. Clearance opening;

[0026] 200. Softening resin tank; 210. Central pipe; 220. Upper water distributor; 230. Lower water distributor; 240. Tank body;

[0027] 300. Water system assembly; 301. Second water inlet; 302. Second water outlet; 303. Water system component; 310. First water system; 320. Second water system; 330. Third water system; 340. Installation unit;

[0028] 400 Valve assembly; 410 Main control valve; 420 Bypass valve; 430 Inlet pipe; 440 Outlet pipe; 450 First bend; 460 Second bend; 401 First inlet; 402 First outlet;

[0029] 500, Salt tank; 501, Salt inlet. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] like Figures 1 to 7 As shown, this utility model discloses a water softener, which includes a housing 100, at least two softening resin tanks 200, a water circuit assembly 300, a valve assembly 400, and a brine tank 500. The housing 100 serves as the exterior and protective component of the water softener. The at least two softening resin tanks 200, the water circuit assembly 300, and the brine tank 500 are all housed within the housing 100. The valve assembly 400 may be located either inside or outside the housing 100. Specifically, the softening resin tanks 200 are vertically disposed within the housing 100, and at least two softening resin tanks 200 are arranged side-by-side in a first horizontal direction. The water circuit assembly 300 is installed on the top of the softening resin tanks 200 and communicates with the resin chamber of the softening resin tanks 200. A valve assembly 400 is disposed on one side of the softening resin tank 200 in the second transverse direction and is connected to the water circuit assembly 300. The valve assembly 400 is used to control the switching and opening / closing of the water circuit within the water circuit assembly 300. Raw water can be introduced into the softening resin tank 200 through the water circuit assembly 300. The softening resin in the softening resin tank 200 can soften the raw water to form soft water, which can then be discharged from the softening resin tank 200 through the water circuit assembly 300. A brine tank 500 is used to hold regenerated salt, which can be used to generate brine. The brine can be used for the regeneration of the softening resin. The brine tank 500 is disposed on one side of the softening resin tank 200 in the second transverse direction. It should be noted that the brine tank 500 and the valve assembly 400 can be disposed on the same side of at least two softening resin tanks 200, or on different sides of at least two softening resin tanks 200. Both the second and first lateral directions are perpendicular to the vertical direction. In one specific embodiment, the second lateral direction is the left-right direction of the water softener, and the second lateral direction is the front-back direction of the water softener. The number of softening resin tanks 200 can be two, three, or more.

[0035] Compared to existing technologies where the valve assembly is located at the top of the softening resin tank, resulting in an excessively tall water softener or a reduced softening resin tank height, the water softener provided by this invention reduces the height requirement of the entire water softener by moving the valve assembly 400 from the vertical top of the softening resin tank 200 to the horizontal side. This allows the softening resin tank 200 to be made taller without changing the overall height of the water softener, enabling it to hold more softening resin and improving softening capacity. Furthermore, compared to existing technologies where multiple softening resin tanks, valve assemblies, and salt tanks are arranged in a straight line, this invention arranges at least two softening resin tanks 200 side-by-side in the first horizontal direction, with the valve assembly 400 and salt tank 500 located on one side of the softening resin tank 200 in the second horizontal direction. This reduces the length of the water softener, making it easier to install in under-sink spaces with limited space. Furthermore, by setting the number of softening resin tanks 200 to at least two, and having at least two softening resin tanks 200 connected to the water circuit assembly 300, more softening resin can be provided using at least two softening resin tanks 200, thereby improving the softening capacity of the water softener.

[0036] In one specific embodiment, two softening resin tanks 200 are provided. The brine tank 500 and valve assembly 400 can be located on the same side of the two softening resin tanks 200, and the two softening resin tanks 200, valve assembly 400, and brine tank 500 are arranged in two rows and two columns. This arrangement helps to improve the compactness of the internal structure of the water softener, making the cross-section of the water softener more square, which helps to reduce the space occupied by the water softener and makes it easier to install.

[0037] Continue to refer to Figure 2 As shown, the housing 100 includes a cover structure 120 and a box structure 110, with the cover structure 120 detachably mounted at the opening of the box structure 110. An opening is formed at the top of the box structure 110, and the cover structure 120 covers the top of the box structure 110. A mounting cavity is formed between the cover structure 120 and the box structure 110 to accommodate the softening resin tank 200, the water circuit assembly 300, and the valve assembly 400.

[0038] Optionally, the box structure 110 includes a maintenance cover 111, which is positioned opposite the valve assembly 400. The maintenance cover 111 has a first state exposing the valve assembly 400 and a second state concealing the valve assembly 400. By providing a maintenance cover 111 positioned opposite the side-mounted valve assembly 400, the water softener allows for easy installation and removal of the maintenance cover 111. This side-mounted maintenance cover 111 facilitates maintenance and replacement of the valve assembly 400 without disassembling the entire outer casing 100; it is convenient and efficient.

[0039] Optionally, the box structure 110 also includes a box body 112, the box body 112 and the maintenance cover 111 are separately provided, the maintenance cover 111 is detachably connected to the box body 112 or is movably connected, and the maintenance cover 111 and the box body 112 are assembled to form a complete box structure 110.

[0040] It should be noted that the switching between the first and second states of the maintenance cover 111 can be as follows: if the maintenance cover 111 is detachably connected to the box body 112, removing the maintenance cover 111 from the box body 112 puts the maintenance cover 111 in the first state, and assembling the maintenance cover 111 with the box body 112 puts the maintenance cover 111 in the second state; if the maintenance cover 111 is movably connected to the box body 112, rotating or moving the maintenance cover 111 relative to the box body 112 to expose the valve assembly 400 in front of the user puts the maintenance cover 111 in the first state, and rotating or moving the maintenance cover 111 in the opposite direction relative to the box body 112 to hide the valve assembly 400 inside the outer shell 100 puts the maintenance cover 111 in the second state.

[0041] In some embodiments, the box body 112 is a frame structure formed by splicing plates. Specifically, the box body 112 includes a bottom plate and a plurality of side plates. A portion of the plurality of side plates protrudes along a portion of the edge of the bottom plate, and the remaining portion is located inside the edge. The maintenance cover 111 can be installed on the portion of the bottom plate edge where no side plates are provided, so that the maintenance cover 111 and the side plates located inside the edge of the box structure 110 enclose an installation space for installing the valve assembly 400.

[0042] In one specific embodiment, the base plate is a rectangular plate, and the multiple side plates include a front side plate, a rear side plate, a left side plate, a right side plate, a first inner side plate, and a second inner side plate connected in a ring. The front side plate and the rear side plate are arranged opposite each other, and the width of the front side plate is smaller than the width of the rear side plate. The left side plate and the rear side plate are arranged opposite each other, and the width of the right side plate is smaller than the width of the left side plate. The first inner side plate and the rear side plate are arranged opposite each other, and the second inner side plate and the right side plate are arranged opposite each other. The maintenance cover 111 has an L-shaped plate structure, and the maintenance cover 111 includes a first plate and a second plate connected vertically. The first plate is connected to the front side plate, and the second plate is connected to the right side plate.

[0043] Continue to refer to Figure 2 and Figure 3As shown, to facilitate the addition of regenerated salt to the salt tank 500, the cover structure 120 includes a salt-adding cover 121, which is positioned directly opposite the salt-adding port 501 of the salt tank 500. The salt-adding cover 121 has a third state exposing the salt-adding port 501 and a fourth state closing the salt-adding port 501. When it is necessary to add regenerated salt to the salt tank 500, it is not necessary to remove the entire outer shell 100; simply switch the salt-adding cover 121 to the third state exposing the salt-adding port 501. After the salt-adding action is completed, switch the salt-adding cover 121 to the fourth state closing the salt-adding port 501. This setup is simple to operate and helps improve salt-adding efficiency.

[0044] The cap structure 120 also includes a cap body 122. The salt-adding cap 121 is either separately disposed or movably connected to the cap body 122. It should be noted that the switching between the third and fourth states of the salt-adding cap 121 can be as follows: If the salt-adding cap 121 is separately disposed from the cap body 122, the salt-adding cap 121 is removed from the cap body 122 to put the salt-adding cap 121 in the third state, and the salt-adding cap 121 is assembled with the cap body 122 to put the salt-adding cap 121 in the fourth state; If the salt-adding cap 121 is movably connected to the cap body 122, the salt-adding cap 121 is rotated or moved relative to the cap body 122 to expose the salt-adding port 501 to the user to put the salt-adding cap 121 in the third state, and the salt-adding cap 121 is rotated or moved in the opposite direction relative to the cap body 122 to close the salt-adding port 501 to put the salt-adding cap 121 in the fourth state.

[0045] Continue to refer to Figure 2 As shown, the salt tank 500 is cubic in shape, and the top opening of the salt tank 500 forms a salt filling port 501. Of course, in other embodiments, the shape of the salt tank 500 can be set to other shapes as needed, and the salt filling port 501 can also be set on the side as needed.

[0046] Furthermore, a groove is formed on the side of the salt tank 500 near the softening resin tank 200, so that the cylindrical softening resin tank 200 is partially placed in the groove, and the outer wall surface of the softening resin tank 200 abuts against the curved surface of the groove, further improving the structural compactness.

[0047] Regarding the structure of the resin softening tank 200, please refer to [reference needed]. Figure 6As shown, the softening resin tank 200 includes a tank body 240, a central pipe 210, an upper water distributor 220, and a lower water distributor 230. The central pipe 210, upper water distributor 220, and lower water distributor 230 are all disposed within the tank body 240, with the upper water distributor 220 located at the top of the central pipe 210 and the lower water distributor 230 located at the bottom of the central pipe 210. The softening resin tank 200 has a raw water inlet and a softened water outlet. In this embodiment of the invention, both the raw water inlet and the softened water outlet are located at the top of the tank body 240. The raw water entering from the raw water inlet first undergoes uniform distribution through the upper water distributor 220, then flows downwards into the softening resin. After being softened by the softening resin, it enters the central pipe 210 through the lower water distributor 230 and flows upwards within the central pipe 210 to the softened water outlet. It should be noted that an upper end cap can be installed on the top of the tank 240, and the raw water inlet and soft water outlet can be set on the upper end cap; alternatively, the water circuit assembly 300 can be used to seal the top opening of the tank 240 in conjunction with the top of the tank 240. In this case, the raw water inlet is the part that is directly opposite the top opening of the tank 240 and the upper water distributor 220, and the soft water outlet is the part that is directly opposite the top opening of the tank 240 and the central pipe 210.

[0048] Regarding the structure of water system component 300, please refer to... Figure 6 As shown, the water system assembly 300 includes a mounting portion 340, and a mounting opening is formed on the top of the softening resin tank 200. The mounting portion 340 is detachably connected to the mounting opening. Optionally, the mounting portion 340 is threadedly connected to the mounting opening. Optionally, the number of mounting portions 340 is the same as the number of softening resin tanks 200, and they correspond one-to-one.

[0049] In some embodiments, continue to refer to Figure 5 As shown, the water circuit assembly 300 includes a first water circuit 310 and a second water circuit 320. The first water circuit 310 connects the raw water inlet of the softening resin tank 200 and the raw water outlet of the valve assembly 400, and the second water circuit 320 connects the softened water outlet of the softening resin tank 200 and the softened water inlet of the valve assembly 400. Figure 7 As shown, the interface connecting the raw water outlet of the water circuit component 300 and the valve component 400 is defined as the second inlet 301, and the interface connecting the soft water inlet of the water circuit component 300 and the valve component 400 is defined as the second outlet 302.

[0050] In some embodiments, two softening resin tanks 200 are provided, and the two softening resin tanks 200 are connected in series. The two softening resin tanks 200 include a first resin tank and a second resin tank. A first water passage 310 connects the raw water inlet of the first resin tank and the raw water outlet of the valve assembly 400. The softened water outlet of the first resin tank and the raw water inlet of the second resin tank are connected through a third water passage 330. A second water passage 320 connects the softened water outlet of the second resin tank and the softened water inlet of the valve assembly 400.

[0051] For ease of installation and manufacturing, in some embodiments, reference will continue to be made to... Figure 7 As shown, the water system assembly 300 includes multiple water system components 303, each water system component 303 forming at least a portion of the first water system 310, the second water system 320, and the third water system 330. The multiple water system components 303 can be detachably connected via inserts, and this modular assembly method facilitates installation.

[0052] In one specific embodiment, two water passage components 303 are provided, and the two water passage components 303 are installed on the top of the two softening resin tanks 200 in a one-to-one correspondence, and the two water passage components 303 are connected. The water passage component 303 near the valve assembly 400 has a mounting portion 340, a second water passage 320, a partial third water passage 330, and a partial first water passage 310 formed thereon; the water passage component 303 away from the valve assembly 400 has a mounting portion 340, a partial third water passage 330, and a partial first water passage 310 formed thereon. By setting the water passage assembly 300 in the form of an assembly of multiple water passage components 303, it is also convenient to change the direction of the water passages in the water passage assembly 300.

[0053] Regarding the structure of the valve assembly 400, in some embodiments, the valve assembly 400 includes a main control valve 410, a bypass valve 420, an inlet pipe 430, and an outlet pipe 440. The main control valve 410 has an inlet channel and an outlet channel. One end of the inlet pipe 430 forms a first inlet 401, and the other end is connected to the inlet end of the inlet channel through the bypass valve 420. One end of the outlet pipe 440 forms a first outlet 402, and the other end is connected to the outlet end of the outlet channel through the bypass valve 420. The valve assembly 400 has a first state in which the first inlet 401 is connected to the inlet channel and the first outlet 402 is connected to the outlet channel, and a second state in which the first inlet 401 is connected to the first outlet 402. Switching valve assembly 400 to the first state allows the water softener's softening system to operate normally; switching valve assembly 400 to the second state disables the water softener's softening system, facilitating maintenance and replacement of its components. (Continue to refer to...) Figure 1 As shown, a clearance opening 101 is also provided on the outer casing 100. The clearance opening 101 is positioned directly opposite the first water inlet 401 and the first water outlet 402, so that the first water inlet 401 and the first water outlet 402 are exposed.

[0054] The bypass valve 420 includes a valve body, two valve cores, and two rotary handles. Each rotary handle is connected to one of the two valve cores, which are rotatably mounted within the valve body. Driving the rotary handles allows the valve cores to rotate within the valve body, thereby switching the flow path within the bypass valve 420. In the embodiments of this application, the bypass valve 420 has multiple valve ports, which respectively connect to the inlet pipe 430, the outlet pipe 440, the valve port of the main control valve 410, and the brine tank 500. It should be noted that the specific structures of the main control valve 410 and the bypass valve 420 are existing technologies and will not be described in detail here.

[0055] Continue to refer to Figure 4 As shown, the valve assembly 400 also includes a first bend 450 and a second bend 460. The first bend 450 connects the outlet end of the inlet channel to the second inlet 301 of the water circuit assembly 300, and the second bend 460 connects the inlet end of the outlet channel to the second outlet 302 of the water circuit assembly 300. Optionally, the first bend 450 and the second bend 460 are L-shaped bends. Of course, for the convenience of water inlet and outlet, the inlet pipe 430 and the outlet pipe 440 can also be set as L-shaped bends.

[0056] In this embodiment, the water softener also includes a control mechanism, which can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the main control valve 410 and other electrical control components to perform their respective functions.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water softener, characterized in that, include: Outer shell (100); At least two softening resin tanks (200) are arranged vertically inside the housing (100), and the at least two softening resin tanks (200) are arranged side by side in the first transverse direction; A water channel assembly (300) is disposed inside the housing (100) and installed on the top of the softening resin tank (200). The water channel assembly (300) is connected to the resin cavity of the softening resin tank (200). A valve assembly (400) is disposed on one side of the softening resin tank (200) in the second transverse direction, and the valve assembly (400) is connected to the water circuit assembly (300). A salt tank (500) is disposed inside the outer casing (100) and is located on one side of the softening resin tank (200) in the second transverse direction.

2. The water softener according to claim 1, characterized in that, There are two softening resin tanks (200), and the two softening resin tanks (200), the valve assembly (400), and the salt tank (500) are arranged in two rows and two columns.

3. The water softener according to claim 1, characterized in that, The housing (100) includes a maintenance cover (111) which is disposed opposite to the valve assembly (400) and has a first state exposing the valve assembly (400) and a second state concealing the valve assembly (400).

4. The water softener according to claim 3, characterized in that, The outer casing (100) includes a box structure (110), which includes a separate box body (112) and a maintenance cover (111).

5. The water softener according to claim 1, characterized in that, The outer casing (100) also includes a salt filling cover (121) which is positioned opposite the salt filling port (501) of the salt tank (500). The salt filling cover (121) has a third state in which the salt filling port (501) is exposed and a fourth state in which the salt filling port (501) is closed.

6. The water softener according to claim 5, characterized in that, The outer casing (100) includes a cover structure (120), which includes a separate cover body (122) and a salt-adding cover (121).

7. The water softener according to claim 1, characterized in that, The valve assembly (400) includes a main control valve (410), a bypass valve (420), an inlet pipe (430), and an outlet pipe (440). The main control valve (410) has an inlet channel and an outlet channel. One end of the inlet pipe (430) forms a first inlet (401), and the other end is connected to the inlet end of the inlet channel through the bypass valve (420). One end of the outlet pipe (440) forms a first outlet (402), and the other end is connected to the outlet end of the outlet channel through the bypass valve (420). The valve assembly (400) has a first state in which the first inlet (401) is connected to the inlet channel and the first outlet (402) is connected to the outlet channel, and a second state in which the first inlet (401) is connected to the first outlet (402).

8. The water softener according to claim 7, characterized in that, The valve assembly (400) further includes a first bend (450) and a second bend (460), the first bend (450) being connected between the outlet end of the inlet channel and the second inlet (301) of the water circuit assembly (300), and the second bend (460) being connected between the inlet end of the outlet channel and the second outlet (302) of the water circuit assembly (300).

9. The water softener according to claim 1, characterized in that, The water circuit assembly (300) includes a first water circuit (310) and a second water circuit (320). The softening resin tank (200) has a raw water inlet and a soft water outlet. The first water circuit (310) connects the raw water inlet to the raw water outlet of the valve assembly (400), and the second water circuit (320) connects the soft water outlet to the soft water inlet of the valve assembly (400). And / or, the water circuit assembly (300) includes a mounting portion (340), the top of the softening resin tank (200) forming a mounting port, the mounting portion (340) being detachably connected to the mounting port.

10. The water softener according to claim 9, characterized in that, Two softening resin tanks (200) are provided. The two softening resin tanks (200) include a first resin tank and a second resin tank arranged in series. The first water passage (310) connects the raw water inlet of the first resin tank with the raw water outlet of the valve assembly (400). The softened water outlet of the first resin tank and the raw water inlet of the second resin tank are connected through a third water passage (330). The second water passage (320) connects the softened water outlet of the second resin tank with the softened water inlet of the valve assembly (400).

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