Water softening mechanism and water softening equipment

Abstract

The utility model relates to the technical field of water treatment devices, and discloses a water softening mechanism and water softening equipment. The water softening mechanism comprises a resin tank and a water distributor assembly, a containing cavity is formed in the resin tank, and a first upper limiting step and a first lower limiting step which are arranged up and down are arranged on the cavity wall of the containing cavity; the water distributor assembly comprises a central pipe, an upper water distributor and a lower water distributor, the upper water distributor and the lower water distributor are connected to the two ends of the central pipe, the upper water distributor can abut against the first upper limiting step, and the lower water distributor can abut against the first lower limiting step, so that the water distributor assembly is connected with the resin tank in a sealed mode. According to the water softening mechanism, a sealing ring can be omitted, the number of parts is reduced, the assembling efficiency is improved, and the machining cost can be reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment devices, in particular to a water softening mechanism and water softening equipment. Background Art

[0002] A water softener is a water purification device that reduces the hardness of water and improves the taste and feel of water. Existing water softeners are mainly divided into two types according to the water purification principle: the first type is a water softener that uses ion exchange method, which mainly removes calcium ions and magnesium ions in water through ion exchange resin; the second type is a water softener that uses physical packaging method, which mainly uses nanocrystalline high-energy polymer spheres to package calcium ions, magnesium ions, bicarbonate, etc. in the water to produce water-insoluble nano-crystals, thereby inhibiting the formation of scale.

[0003] In the prior art, a water softener utilizing an ion exchange method typically includes a tank body and a water distributor assembly disposed within the tank body. The water distributor assembly includes a central tube and upper and lower water distributors connected to both ends of the central tube. A storage space for resin is formed between the upper and lower water distributors. A first water inlet and a second water inlet are provided at the top of the tank body. Water flowing into the tank body from the first water inlet is evenly distributed by the upper water distributor before flowing into the storage space and being softened by the resin. The softened water then flows between the lower water distributor and the bottom cover, passes through the central tube, and then flows out of the second water inlet for user use. During assembly of the water softener, both the upper and lower water distributors are sealed to the inner wall of the tank body by sealing rings. Therefore, sealing rings must be installed on the upper and lower water distributors prior to assembly, increasing the number of assembly steps and parts, and to a certain extent, the processing cost of the water softener. Furthermore, the sealing rings are prone to failure after prolonged use, affecting the sealing performance between the water distributor assembly and the tank body.

[0004] Therefore, it is urgent to propose a soft water mechanism to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the present invention is to provide a water softening mechanism and water softening equipment, which can omit the use of sealing rings, reduce the number of parts, improve assembly efficiency, and reduce processing costs to a certain extent.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A water softening mechanism, comprising:

[0008] A resin tank having an accommodating cavity formed therein, wherein a first upper limit step and a first lower limit step arranged vertically are provided on a cavity wall of the accommodating cavity;

[0009] The water distributor assembly includes a central tube and an upper water distributor and a lower water distributor connected to both ends of the central tube. The upper water distributor can be tightly pressed against the first upper limit step, and the lower water distributor can be tightly pressed against the first lower limit step to achieve a sealed connection between the water distributor assembly and the resin tank.

[0010] As a preferred solution of the water softening mechanism provided by the present invention, the first upper limit step and the first lower limit step are both annular, and the inner ring diameter of the first lower limit step is greater than or equal to the outer ring diameter of the first upper limit step.

[0011] As a preferred solution of the water softening mechanism provided by the present invention, the cavity wall of the accommodating cavity includes a first cavity wall segment, a second cavity wall segment, and a third cavity wall segment connected sequentially from top to bottom, and the diameter L1 of the first cavity wall segment, the diameter L2 of the second cavity wall segment, and the diameter L3 of the third cavity wall segment satisfy: L1 < L2 < L3;

[0012] The first upper limit step is formed between the first cavity wall segment and the second cavity wall segment, and the first lower limit step is formed between the second cavity wall segment and the third cavity wall segment.

[0013] As a preferred solution of the water softening mechanism provided by the present invention, a second upper limit step is provided on the central tube, and the upper water distributor is limited between the first upper limit step and the second upper limit step; and / or

[0014] A second lower limiting step is provided on the central tube, and the second lower limiting step is located below the second upper limiting step, and the lower water distributor is in abutment against the second lower limiting step.

[0015] As a preferred solution of the water softening mechanism provided by the present invention, the bottom surface of the first upper limit step is a first upper abutting surface, the first upper abutting surface is gradually inclined downward in the direction close to the axis of the resin tank, and the upper water distributor is provided with a second upper abutting surface that cooperates with the first upper abutting surface; and / or

[0016] The bottom surface of the first lower limit step is a first lower abutting surface, which gradually tilts downward toward the axis of the resin tank. The lower water distributor is provided with a second lower abutting surface that matches the first lower abutting surface.

[0017] As a preferred solution of the water softening mechanism provided by the present invention, the resin tank includes:

[0018] A tank body, wherein a mounting opening is provided at the bottom end of the tank body;

[0019] A bottom cover is installed at the installation opening, and the accommodating cavity is formed between the bottom cover and the tank body, and the lower water distributor is limited between the first lower limit step and the bottom cover.

[0020] As a preferred solution of the water softening mechanism provided by the present invention, the bottom cover is installed on the installation opening by using a spin-melting process.

[0021] As a preferred solution of the water softening mechanism provided by the present invention, the top of the resin tank is provided with two water outlets, one of which is connected to the central tube;

[0022] The water softening mechanism further includes a joint assembly, and each of the water outlets is connected to a corresponding external water channel via the joint assembly.

[0023] As a preferred solution of the water softening mechanism provided by the present invention, the joint assembly includes:

[0024] A connecting joint, wherein a limiting groove is provided on the outer wall of the water outlet, one end of the connecting joint is sleeved on the corresponding water outlet and is communicated with the water outlet, and a limiting hole corresponding to the limiting groove is provided on the connecting joint;

[0025] A plug-in connector can be plugged into the limiting hole and partially inserted into the limiting groove.

[0026] The utility model also provides a water softening device, comprising:

[0027] The water softening mechanism as described above, wherein the space between the upper water distributor and the lower water distributor of the water softening mechanism is filled with resin;

[0028] The salt box includes a box body and a salt absorbing mechanism arranged in the box body. The salt absorbing mechanism is connected with the resin tank and can extract brine in the box body to inject it into the resin tank.

[0029] The beneficial effects of the utility model are:

[0030] The water softening device provided by the present invention provides a first upper limit step and a first lower limit step arranged up and down on the cavity wall of the accommodating cavity. Therefore, when assembling the water softening mechanism, the upper water distributor can be pressed against the first upper limit step, and the lower water distributor can be pressed against the first lower limit step. While ensuring a stable connection between the water distributor assembly and the resin tank, the sealing requirements between the upper water distributor and the resin tank, as well as between the lower water distributor and the resin tank can be guaranteed. In addition, the above-mentioned arrangement can also omit the use of sealing rings. On the one hand, it can reduce the number of parts, improve assembly efficiency, and reduce processing costs to a certain extent. On the other hand, it can also avoid the failure of the sealing ring due to long-term use, thereby extending the service life of the water softening mechanism, reducing the user's usage cost, and improving the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0032] Figure 1 It is a cross-sectional schematic diagram of the water softening mechanism provided by an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of the exploded structure of the water distributor assembly provided by an embodiment of the present utility model;

[0034] Figure 3 This is a schematic structural diagram of the bottom cover provided by an embodiment of the present utility model;

[0035] Figure 4 This is a schematic diagram of a partial explosion structure of a water softening mechanism provided by an embodiment of the utility model;

[0036] Figure 5 This is a schematic structural diagram of a connection joint provided by an embodiment of the present utility model;

[0037] Figure 6 This is a structural diagram of the connector and the elastic arm provided in an embodiment of the present utility model;

[0038] Figure 7 It is a schematic diagram of the water path of the water softening mechanism provided by the embodiment of the utility model when performing the water softening operation.

[0039] In the picture:

[0040] 100, water distributor assembly; 110, center tube; 111, second upper limit step; 112, second lower limit step; 120, upper water distributor; 1201, upper water distribution hole; 130, lower water distributor; 1301, lower water distribution hole; 131, water distributor body; 132, plug-in protrusion; 1321, plug-in hole; 133, limiter;

[0041] 200, resin tank; 201, accommodating chamber; 2011, first upper limit step; 2012, first lower limit step; 210, tank body; 211, first water inlet; 2111, limiting groove; 212, second water inlet; 213, sealing member; 220, bottom cover; 221, lower skeleton structure;

[0042] 300, connector assembly; 310, connecting connector; 311, limiting hole; 312, snap-in hole; 320, connector; 321, connecting end; 322, plug-in end; 330, elastic arm. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0044] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0047] Figure 1 FIG. 2 shows a cross-sectional schematic diagram of the water softening mechanism provided in this embodiment. Figure 1 As shown, this embodiment provides a water softening mechanism, which includes a resin tank 200 and a water distributor assembly 100. Two water outlets are provided at the top of the resin tank 200. A receiving chamber 201 is formed in the resin tank 200. The water distributor assembly 100 is provided in the receiving chamber 201, and resin is filled between the water distributor assembly 100 and the receiving chamber 201. The two water outlets are a first water outlet 211 and a second water outlet 212. When in use, the first water outlet 211 is connected to an external water source, and the second water outlet 212 is connected to an external water outlet. Water in the external water source enters the receiving chamber 201 through the first water outlet 211, and after being evenly distributed by the water distributor assembly 100, it is softened by the resin and finally flows out from the second water outlet 212 to the external water outlet for use by the user.

[0048] In this embodiment, a first upper limit step 2011 and a first lower limit step 2012 are arranged vertically on the wall of the accommodating chamber 201. The water distributor assembly 100 includes a central tube 110 and an upper water distributor 120 and a lower water distributor 130 connected to both ends of the central tube 110. The upper water distributor 120 can abut against the first upper limit step 2011, and the lower water distributor 130 can abut against the first lower limit step 2012, thereby achieving a sealed connection between the water distributor assembly 100 and the resin tank 200. The central tube 110 is connected to the second water outlet 212.

[0049] The softening mechanism provided in this embodiment provides a first upper limit step 2011 and a first lower limit step 2012 arranged up and down on the cavity wall of the accommodating cavity 201, so that when assembling the softening mechanism, the upper water distributor 120 can be pressed against the first upper limit step 2011, and the lower water distributor 130 can be pressed against the first lower limit step 2012, while ensuring a stable connection between the water distributor assembly 100 and the resin tank 200, and the sealing requirements between the upper water distributor 120 and the resin tank 200 and between the lower water distributor 130 and the resin tank 200 can be guaranteed; in addition, the above-mentioned arrangement can also omit the use of sealing rings, which on the one hand can reduce the number of parts, improve assembly efficiency, and reduce processing costs to a certain extent; on the other hand, it can also avoid the failure of the sealing ring due to long-term use, thereby extending the service life of the softening mechanism, reducing the user's usage cost, and improving the user experience.

[0050] It should be explained that the designers have verified through simulation and experimental verification that the water softening mechanism provided in this embodiment can meet the sealing requirements between the upper water distributor 120 and the resin tank 200 and between the lower water distributor 130 and the resin tank 200.

[0051] Furthermore, the resin tank 200 includes a tank body 210 and a bottom cover 220. The bottom end of the tank body 210 is provided with a mounting opening. The bottom cover 220 is mounted in the mounting opening, and a receiving chamber 201 is formed between the bottom cover 220 and the tank body 210. When assembling the water softening mechanism, the water distributor assembly 100 is installed into the receiving chamber 201 through the mounting opening at the bottom end of the tank body 210. In this embodiment, the bottom cover 220 is mounted in the mounting opening using a spin-melting process to achieve a sealed connection between the tank body 210 and the bottom cover 220, resulting in a stable connection and a good sealing effect. This installation method also allows the omission of a sealing ring between the bottom cover 220 and the mounting opening, further reducing the number of parts in the water softening mechanism and lowering processing costs.

[0052] Of course, in other embodiments, the bottom cover 220 may also be threadedly connected to the mounting port, and a sealing ring may be provided between the bottom cover 220 and the mounting port, which can also achieve the above-mentioned effect.

[0053] like Figure 1As shown, the first upper limit step 2011 and the first lower limit step 2012 are both annular, and the inner ring diameter of the first lower limit step 2012 is greater than or equal to the outer ring diameter of the first upper limit step 2011. This arrangement can prevent interference between the upper water distributor 120 and the first lower limit step 2012 when the upper water distributor 120 is inserted into the tank body 210 from the installation port. Specifically, in this embodiment, the cavity wall of the accommodating cavity 201 includes a first cavity wall segment, a second cavity wall segment, and a third cavity wall segment connected in sequence from top to bottom. The diameter L1 of the first cavity wall segment, the diameter L2 of the second cavity wall segment, and the diameter L3 of the third cavity wall segment satisfy: L1 < L2 < L3; the first upper limit step 2011 is formed between the first cavity wall segment and the second cavity wall segment, and the first lower limit step 2012 is formed between the second cavity wall segment and the third cavity wall segment. This design can simplify the processing steps and improve the processing efficiency, and the inner ring diameter of the first lower limiting step 2012 is equal to the outer ring diameter of the first upper limiting step 2011 .

[0054] To further ensure the sealing requirements between the upper water distributor 120 and the resin tank 200, in this embodiment, the bottom surface of the first upper limit step 2011 is a first upper abutting surface, which gradually tilts downward toward the axis of the resin tank 200, and a second upper abutting surface that cooperates with the first upper abutting surface is provided on the upper water distributor 120. By providing the first upper abutting surface and the second upper abutting surface that cooperate with the inclined surface, the flow path and flow resistance of water between the upper water distributor 120 and the inner top wall of the tank body 210 from the gap between the upper water distributor 120 and the cavity wall of the accommodating cavity 201 to the resin filling area can be increased, thereby improving the sealing between the upper water distributor 120 and the resin tank 200. Similarly, the bottom surface of the first lower limit step 2012 is the first lower abutment surface, which gradually tilts downward in the direction close to the axis of the resin tank 200. The lower water distributor 130 is provided with a second lower abutment surface that cooperates with the first lower abutment surface to ensure the sealing between the lower water distributor 130 and the resin tank 200.

[0055] Optionally, a second upper limit step 111 is provided on the central tube 110, and the upper water distributor 120 is limited between the first upper limit step 2011 and the second upper limit step 111. In other words, the first upper limit step 2011 and the second upper limit step 111 cooperate to realize the upper and lower limits of the upper water distributor 120, so that the upper water distributor 120 and the first upper limit step 2011 are tightly fitted, avoiding a gap between the upper water distributor 120 and the first upper limit step 2011 that affects the sealing between the two.

[0056] Figure 2 FIG. 1 shows an exploded structural diagram of the water distributor assembly 100 provided in this embodiment. Figure 2 and combined Figure 1As shown, the lower water distributor 130 includes a water distributor body 131 and a plug-in protrusion 132 protruding from the water distributor body 131. The plug-in protrusion 132 is provided with a through plug-in hole 1321. The bottom of the central tube 110 is plugged into the plug-in hole 1321 to achieve the connection between the lower water distributor 130 and the central tube 110. Optionally, a second lower limit step 112 is further provided on the central tube 110. The second lower limit step 112 is located below the second upper limit step 111. The top of the plug-in protrusion 132 abuts against the second lower limit step 112 to limit the depth of the central tube 110 inserted into the plug-in hole 1321 and to serve as a reminder of the installation in place.

[0057] Figure 3 FIG. 2 shows a schematic structural diagram of the bottom cover 220 provided in this embodiment. Figure 3 and combined Figure 1 、 Figure 2 As shown, a limiting member 133 is further provided at the bottom of the water distributor body 131, and a lower frame structure 221 corresponding to the limiting member 133 is provided on the bottom cover 220, with the limiting member 133 abutting against the lower frame structure 221. This arrangement not only serves as a reminder that the installation is in place, but also serves as a limit for the lower water distributor 130, preventing the lower water distributor 130 and the bottom cover 220 from being too close together, resulting in a smaller lower water distribution space between the two and affecting the uniformity of water distribution.

[0058] Optionally, there are multiple limit members 133, and the multiple limit members 133 are arranged at intervals along the circumference of the lower water distributor 130. The lower skeleton structure 221 includes multiple lower limit bones corresponding to the limit members 133 one by one, and the multiple limit members 133 and the multiple lower limit bones are supported one by one.

[0059] It can be understood that the specific structure of the upper water distributor 120 is the same as that of the lower water distributor 130, and the difference lies in the different installation directions, that is, the plug hole of the upper water distributor 120 is plugged into the top of the central tube 110, the plug protrusion 132 of the upper water distributor 120 is abutted against the second upper limit step 111, and the limiter 133 of the upper water distributor 120 is abutted against the inner top of the tank body 210 to form an upper water distribution space between the upper water distributor 120 and the inner top of the tank body 210. Among them, as Figure 2 As shown, an upper water distribution hole 1201 communicating with the upper water distribution space is further provided on the upper water distributor 120, and a lower water distribution hole 1301 communicating with the lower water distribution space is further provided on the lower water distributor 130.

[0060] like Figure 1As described, the second water outlet 212 is a stepped hole, and the large end of the second water outlet 212 is arranged toward the interior of the tank body 210. After the top of the central tube 110 is inserted into the plug hole of the upper water distributor 120, it can be partially inserted into the second water outlet 212 to further ensure the stable assembly between the water distributor assembly 100 and the tank body 210. In addition, the above-mentioned arrangement can also make the top of the central tube 110 higher than the filling height of the resin to ensure that the resin will not fall into the central tube 110 when filling. Optionally, a sealing member 213 is provided between the central tube 110 and the second water outlet 212 to ensure a sealed assembly between the central tube 110 and the second water outlet 212, and to prevent the water in the upper water distribution space from flowing directly out of the second water outlet 212 through the gap between the central tube 110 and the second water outlet 212, thereby affecting the soft water effect.

[0061] Figure 4 A schematic diagram of a partial explosion structure of the water softening mechanism provided in this embodiment is shown. Figure 5 FIG. 3 shows a schematic structural diagram of the connection joint 310 provided in this embodiment. Figure 6 FIG. 3 shows a schematic structural diagram of the connector 320 and the elastic arm 330 provided in this embodiment. Figure 4-Figure 6 As shown, the water softening mechanism further includes a joint assembly 300 , and each water outlet is connected to a corresponding external water channel through the joint assembly 300 .

[0062] The specific structure of the joint assembly 300 and its connection method with the corresponding water outlet are described in detail below by taking one of the water outlets as an example.

[0063] Specifically, the connector assembly 300 includes a connector 310 and a plug-in connector 320. A limiting groove 2111 is provided on the outer wall of the water outlet. One end of the connector 310 is sleeved onto the corresponding water outlet and communicates with the outlet. The other end of the connector 310 communicates with the corresponding external waterway. The connector 310 is provided with a limiting hole 311 corresponding to the limiting groove 2111. The plug-in connector 320 can be plugged into the limiting hole 311 and partially inserted into the limiting groove 2111. The provision of the connector 310 can serve as an intermediate connection to adapt to different external waterways, improving the versatility of the water softening mechanism. The provision of the plug-in connector 320 can serve as a limiter between the connector 310 and the corresponding water outlet, reducing the probability of the two falling off during use.

[0064] In this embodiment, the inner wall of the connection joint 310 is provided with an internal thread, and the outer wall of the water outlet is provided with an external thread. The connection joint 310 is threadedly connected to the corresponding water outlet, and the connection is tight and easy to disassemble.

[0065] like Figure 5-Figure 6As shown, the connector 320 includes a connecting end 321 and two plug ends 322 connected to both ends of the connecting end 321. The connecting joint 310 is provided with limiting holes 311 corresponding to the plug ends 322. After the connecting joint 310 is screwed onto the corresponding water outlet, the two plug ends 322 of the connector 320 can be inserted into the two limiting holes 311 respectively to further improve the limiting effect of the connector 320 on the connecting joint 310 and the water outlet. In addition, the connecting end 321 and the two plug ends 322 form a U-shaped structure. When the connector 320 is inserted into the limiting holes 311, the connecting end 321 can be used as a handheld part for the operator to operate.

[0066] Optionally, an elastic arm 330 is provided on the plug connector 320, and a snap-in hole 312 is further provided on the connecting joint 310. The elastic arm 330 is elastically snapped into the snap-in hole 312. Specifically, the elastic arm 330 is connected to the connecting end 321 and is located between the two plug ends 322. When the two plug ends 322 are respectively inserted into the corresponding limiting holes 311, the elastic arm 330 snaps into the snap-in hole 312, further locking the connecting joint 310 with the corresponding water outlet. In this embodiment, there are two elastic arms 330, which are spaced apart at the connecting end 321. The space between the two elastic arms 330 forms a deformation space for elastic deformation. The two elastic arms 330 snap into the same snap-in hole 312 and, under their elastic action, respectively abut against the inner wall of the snap-in hole 312, thereby locking the two elastic arms 330 and the snap-in hole 312.

[0067] The following combination Figure 1 and Figure 2 Briefly describe the assembly process of the water softening mechanism:

[0068] 1) Insert the top of the central tube 110 into the insertion hole of the upper water distributor 120, and make the insertion protrusion of the upper water distributor 120 abut against the second upper limit step 111;

[0069] 2) Insert the assembled upper water distributor 120 and the central tube 110 into the tank body 210. When the upper water distributor 120 abuts against the first upper limit step 2011, it is installed in place;

[0070] 3) Filling the resin into the tank body 210 from the installation port at the bottom end of the tank body 210;

[0071] 4) Install the lower water distributor 130 into the tank body 210 through the installation opening at the bottom end of the tank body 210, and insert the bottom of the central tube 110 into the insertion hole 1321 of the lower water distributor 130. When the lower water distributor 130 abuts against the first lower limit step 2012, it is installed in place;

[0072] 5) The bottom cover 220 is installed on the installation opening by using a spin-melting process to achieve a sealed connection between the bottom cover 220 and the tank body 210 .

[0073] This embodiment further provides a water softening device, comprising a salt tank and the aforementioned water softening mechanism. The salt tank comprises a housing and a salt absorption mechanism disposed within the housing. The salt absorption mechanism is connected to the resin tank 200 and is capable of extracting salt water from the housing and injecting it into the resin tank 200, thereby regenerating the resin within the resin tank 200. The salt tank is a conventional structure in water softening devices, and the specific structure of the salt tank and the principle of its cooperation with the water softening mechanism are not further described in this embodiment.

[0074] Figure 7 The schematic diagram of the water path of the water softening mechanism provided in this embodiment during the water softening operation is shown below. Figure 1 、 Figure 2 and Figure 7 Briefly describe the working principle of the water softening mechanism:

[0075] 1) During normal operation: Water from the external water source flows through the first water outlet 211, the upper water distribution space, and the upper water distribution hole 1201, then flows into the resin filling area to be softened by the resin. The softened water then flows through the lower water distribution hole 1301, the lower water distribution space, and the central tube 110, and then flows out of the second water outlet 212 for user use.

[0076] 2) During the regeneration process: the salt absorption mechanism extracts the salt water in the box, so that the salt water flows into the resin filling area through the second water outlet 212, the central tube 110, the lower water distribution space and the lower water distribution hole 1301 in sequence, and forms waste water after the resin is regenerated. The waste water then flows through the upper water distribution hole 1201 and the upper water distribution space in sequence and is discharged from the first water outlet 211.

[0077] It should be noted that the sizes of the upper water distribution hole 1201 and the lower water distribution hole 1301 can allow water to pass through but not allow resin to pass through.

[0078] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A water softening mechanism, characterized in that: include: A resin tank (200), wherein a receiving cavity (201) is formed in the resin tank (200), and a first upper limit step (2011) and a first lower limit step (2012) arranged in an upper and lower manner are provided on a cavity wall of the receiving cavity (201); A water distributor assembly (100) comprises a central tube (110) and an upper water distributor (120) and a lower water distributor (130) connected to both ends of the central tube (110); the upper water distributor (120) can be pressed against the first upper limit step (2011), and the lower water distributor (130) can be pressed against the first lower limit step (2012), so as to achieve a sealed connection between the water distributor assembly (100) and the resin tank (200).

2. The water softening mechanism according to claim 1, characterized in that: The first upper limit step (2011) and the first lower limit step (2012) are both annular, and the inner ring diameter of the first lower limit step (2012) is greater than or equal to the outer ring diameter of the first upper limit step (2011).

3. The water softening mechanism according to claim 2, characterized in that: The cavity wall of the accommodating cavity (201) comprises a first cavity wall segment, a second cavity wall segment and a third cavity wall segment connected in sequence from top to bottom, wherein the diameter L1 of the first cavity wall segment, the diameter L2 of the second cavity wall segment and the diameter L3 of the third cavity wall segment satisfy the following relationship: L1<L2<L3; The first upper limit step (2011) is formed between the first cavity wall segment and the second cavity wall segment, and the first lower limit step (2012) is formed between the second cavity wall segment and the third cavity wall segment.

4. The water softening mechanism according to claim 1, characterized in that: A second upper limit step (111) is provided on the central tube (110), and the upper water distributor (120) is limited between the first upper limit step (2011) and the second upper limit step (111); and / or A second lower limit step (112) is provided on the central tube (110), and the second lower limit step (112) is located below the second upper limit step (111). The lower water distributor (130) abuts against the second lower limit step (112).

5. The water softening mechanism according to claim 1, characterized in that: The bottom surface of the first upper limit step (2011) is a first upper abutting surface, the first upper abutting surface gradually tilts downward in a direction close to the axis of the resin tank (200), and the upper water distributor (120) is provided with a second upper abutting surface that matches the first upper abutting surface; and / or The bottom surface of the first lower limit step (2012) is a first lower abutting surface, which gradually tilts downward in a direction close to the axis of the resin tank (200), and the lower water distributor (130) is provided with a second lower abutting surface that matches the first lower abutting surface.

6. The water softening mechanism according to any one of claims 1 to 5, characterized in that: The resin tank (200) comprises: A tank body (210), wherein a mounting opening is provided at the bottom end of the tank body (210); A bottom cover (220) is installed at the installation opening, and the accommodating cavity (201) is formed between the bottom cover (220) and the tank body (210), and the lower water distributor (130) is limited between the first lower limit step (2012) and the bottom cover (220).

7. The water softening mechanism according to claim 6, characterized in that: The bottom cover (220) is installed on the installation opening by using a spin-melting process.

8. The water softening mechanism according to any one of claims 1 to 5, characterized in that: The top of the resin tank (200) is provided with two water outlets, one of which is connected to the central pipe (110); The water softening mechanism further comprises a joint assembly (300), and each of the water outlets is connected to a corresponding external water channel via the joint assembly (300).

9. The water softening mechanism according to claim 8, characterized in that: The joint assembly (300) comprises: A connecting joint (310), wherein a limiting groove (2111) is provided on the outer wall of the water outlet, one end of the connecting joint (310) is sleeved on the corresponding water outlet and communicated with the water outlet, and a limiting hole (311) corresponding to the limiting groove (2111) is provided on the connecting joint (310); A plug-in connector (320), wherein the plug-in connector (320) can be plugged into the limiting hole (311) and partially inserted into the limiting groove (2111).

10. A water softening device, characterized in that: include: The water softening mechanism according to any one of claims 1 to 9, wherein the space between the upper water distributor (120) and the lower water distributor (130) of the water softening mechanism is filled with resin; The salt box comprises a box body and a salt absorbing mechanism arranged in the box body, wherein the salt absorbing mechanism is connected to the resin tank (200) and can extract salt water from the box body to inject it into the resin tank (200).

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