Water softener and water distributor thereof

Abstract

The present application relates to the technical field of water softener, and particularly provides a water softener and a water distributor thereof, aiming at solving the problem that the water distributor of the existing water softener cannot make the softened resin in the water softener tank fully contact with brine, so that the softened resin cannot be effectively regenerated. To this end, the water distributor comprises a first water distributing part and a second water distributing part, and a first water path and a second water path in communication with the first water distributing part and the second water distributing part respectively, a plurality of first water passing holes and a plurality of second water passing holes are arranged on the first water distributing part and the second water distributing part respectively, the space containing the softened resin of the water softener tank, the first water passing holes and the first water path are sequentially communicated to form a raw water softening flow path, the second water path, the second water passing holes and the space containing the softened resin are sequentially communicated to form a resin regeneration flow path, the second water passing holes are arranged such that the single flow area is smaller than the single first water passing hole, and when the brine flows through the resin regeneration flow path, the distance of the brine sprayed from the second water passing holes is not less than one half of the radius of the water softener tank.

Description

Technical Field

[0001] This invention relates to the field of water softener technology, specifically providing a water softener and its water distributor. Background Technology

[0002] A water softener is a device used to remove hardness ions from water, commonly used in homes and industrial settings. Hardness ions mainly include calcium and magnesium ions, which combine with other substances in the water to form limescale, damaging pipes, equipment, and appliances. Water softeners use ion exchange technology to exchange hardness ions with sodium ions, thus softening the water.

[0003] The existing water softener has a water diversion valve installed at the top of the softening tank, and a water distributor installed inside the softening pipe. A space for containing softening resin is formed between the water softener tank and the water distributor, and this space is filled with softening resin. The first port of the water diversion valve is connected to the tap water pipe through the raw water inlet pipe, and the second port of the water diversion valve is directly connected to the space containing the softening resin. The water distributor includes a central pipe and a water distribution component connected to the lower end of the central pipe. The water distribution component includes a generally cylindrical shell, the opening at the top of the shell is connected to the lower end of the central pipe, and a large number of strip-shaped holes are evenly distributed around the central axis of the shell on its circumferential sidewalls. The third port of the water diversion valve is connected to the upper end of the central pipe, the fourth port of the water diversion valve is connected to the softened water outlet pipe, the fifth port of the water diversion valve is connected to the brine tank through the brine inlet pipe, and the sixth port of the water diversion valve is connected to the wastewater tank.

[0004] During water softening, the water circuit switching valve connects the first interface with the second interface and the third interface with the fourth interface. The raw water supplied by the tap water pipe flows through the raw water inlet pipe and the water circuit switching valve in sequence before flowing into the space containing the softening resin. After the raw water flows through the softening resin, it becomes soft water. The soft water passes through the strip holes on the water distribution component and then flows through the central pipe, the water circuit switching valve, and the soft water outlet pipe in sequence before flowing out.

[0005] After a water softener has been used for a period of time, a large number of calcium and magnesium ions are adsorbed onto the softening resin, reducing its ability to adsorb these ions. At this point, the softening resin needs to be regenerated. During regeneration, the water circuit switching valve connects the first and third ports, the fifth and third ports, and the second and sixth ports. A Venturi channel exists between the first and third ports of the water circuit switching valve. Raw water flows sequentially through the raw water inlet pipe and the water circuit switching valve into the central pipe. The negative pressure generated during the flow of the raw water in the Venturi channel causes the brine in the brine tank to be drawn in through the brine inlet pipe and mixed before flowing into the central pipe. The mixed brine then flows through the strip-shaped holes on the water distribution unit into the space containing the softening resin. After passing through the softening resin, the brine flows through the water circuit switching valve and the wastewater pipe before exiting.

[0006] However, the flow rate during the softening process is much higher than that during the regeneration process. For example, if the flow rate during softening is 25 L / min, the flow rate during regeneration is only 1.2 L / min. To meet the flow rate requirement during softening, the strip-shaped orifices on the water distribution unit have a large flow area and a large number of them. However, the flow rate during regeneration is lower, and the pressure of the brine inside the water distribution unit is lower. When the brine flows out of the strip-shaped orifices, it cannot reach the areas around the water distribution unit that are far from the strip-shaped orifices. This results in most of the brine flowing out of the water distribution unit being distributed in a small area around the water distributor before flowing out. The softening resin in the softening tank, far from the water distributor, cannot come into contact with most of the brine flowing out of the water distribution unit, thus failing to regenerate effectively.

[0007] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0008] The present invention aims to solve the above-mentioned technical problem, namely, the problem that the water distributor of the existing water softener prevents the softening resin in the water softening tank from fully contacting the brine and thus cannot be effectively regenerated.

[0009] In a first aspect, the present invention provides a water distributor for a water softener, the water distributor being disposed within the water softener's water tank, with a space for accommodating softening resin formed between the water softener and the water distributor. The water distributor comprises a first water distribution component and a second water distribution component, and a first water passage and a second water passage respectively connected to both. The first water distribution component and the second water distribution component are respectively provided with a plurality of first water passages and a plurality of second water passages. The space, the first water passages, and the first water passages are sequentially connected to form a raw water softening flow path. The second water passage, the second water passages, and the space are sequentially connected to form a resin regeneration flow path. The second water passage is configured such that the flow area of ​​a single second water passage is smaller than the flow area of ​​a single first water passage, and when brine flows through the resin regeneration flow path, the distance from which the brine is ejected from the second water passage is not less than half the radius of the water softener.

[0010] In the preferred embodiment of the above-mentioned water distributor, the center of the second water distributor is located on the vertical central axis of the soft water tank, and the distance from the outer peripheral edge of the second water distributor to the center is not less than half the radius of the soft water tank.

[0011] In the preferred embodiment of the above-mentioned water distributor, the second water distribution component includes multiple branch pipes evenly distributed around the vertical central axis of the soft water tank, the inlet end of the multiple branch pipes is connected to the second water passage, and the multiple second water passage holes are distributed on the multiple branch pipes.

[0012] In the preferred embodiment of the above-mentioned water distributor, the flow area of ​​the plurality of second water passage holes distributed sequentially on each branch pipe along the direction away from the second water path decreases sequentially.

[0013] In the preferred technical solution of the above water distributor, the branch pipe is a hollow fiber membrane or the branch pipe is made of shape memory alloy.

[0014] In the preferred embodiment of the water distributor described above, the second water path is coaxial with the vertical central axis of the soft water tank.

[0015] In the preferred embodiment of the above-mentioned water distributor, the water distributor includes a first central pipe and a second central pipe sleeved inside the first central pipe; the channel between the first central pipe and the second central pipe and the internal channel of the second central pipe respectively form the first water path and the second water path, or the channel between the first central pipe and the second central pipe and the internal channel of the second central pipe respectively form the second water path and the first water path.

[0016] In the preferred embodiment of the water distributor described above, there are multiple second water distribution components, which are distributed along the vertical central axis of the soft water tank.

[0017] In the preferred technical solution of the above-mentioned water distributor, among two adjacent second water distribution components, the flow area of ​​the second water passage hole on the second water distribution component downstream of the second water path is smaller than the flow area of ​​the corresponding second water passage hole on the second water distribution component upstream of the second water path.

[0018] When the above technical solution is adopted, the water distributor includes a first water distribution component and a second water distribution component, as well as a first water passage and a second water passage respectively connected to the two. The first water distribution component and the second water distribution component are respectively provided with a plurality of first water passage holes and a plurality of second water passage holes. The space for containing softening resin in the water softener's water tank, the first water passage holes and the first water passage are sequentially connected to form a raw water softening flow path. The second water passage, the second water passage holes and the space are sequentially connected to form a resin regeneration flow path. The second water passage hole is configured such that the flow area of ​​a single second water passage hole is smaller than the flow area of ​​a single first water passage hole, and when the brine flows through the resin regeneration flow path, the distance from which the brine is sprayed out of the second water passage hole is not less than half the radius of the water softener tank.

[0019] With this setup, during raw water softening, the raw water flows along the raw water softening flow path to convert it into soft water. During softening resin regeneration, brine flows along the resin regeneration flow path to regenerate the softening resin. The flow area of ​​a single second water passage is smaller than that of a single first water passage, and the distance the brine sprays from the second water passage is no less than half the radius of the softening tank when it flows through the resin regeneration flow path. This ensures that the brine flowing from the second water passage passes through most of the softening resin, allowing the softening resin to fully contact the brine and thus effectively regenerating the softening resin.

[0020] Preferably, the center of the second water distribution component is located on the vertical central axis of the soft water tank, and the distance from the outer periphery of the second water distribution component to the center is not less than half the radius of the soft water tank.

[0021] This design allows for a larger coverage area of ​​the brine flowing out of the second water passage, enabling the softening resin to come into more thorough contact with the brine and improving the regeneration effect of the softening resin.

[0022] Preferably, the second water distribution component includes multiple branch pipes evenly distributed around the vertical central axis of the soft water tank. The inlet ends of the multiple branch pipes are connected to the second water passage. Multiple second water passage holes are distributed on the multiple branch pipes. The flow area of ​​the multiple second water passage holes distributed sequentially on each branch pipe in a direction away from the second water passage decreases sequentially.

[0023] Because multiple second water passages are distributed on the branch pipe, the water pressure gradually decreases along the direction of water flow inside the branch pipe. The flow area of ​​the multiple second water passages distributed sequentially on each branch pipe away from the second water path decreases sequentially. This makes the distance that the brine is sprayed from the second water passages at different positions on the branch pipe tend to be the same, so that the softening resin at different positions can fully contact the brine.

[0024] Preferably, the branch tube is a hollow fiber membrane or the branch tube is made of shape memory alloy.

[0025] The branch pipes are designed with hollow fiber membrane filaments, allowing for a greater number of branch pipes. This enables more thorough distribution of the second water passages within the softening pipe, resulting in more complete contact between the softening resin and the brine. Furthermore, the hollow limiting membrane filaments possess a degree of elasticity, facilitating the insertion of the second water distribution component into the softening tank through the smaller mounting hole. The branch pipes are made of shape memory alloy, further simplifying the insertion of the second water distribution component into the softening tank through the smaller mounting hole.

[0026] In a second aspect, the present invention also provides a water softener, the water softener comprising the water distributor of any one of the above-described technical solutions.

[0027] It should be noted that this water softener has all the technical effects of the water distributor described in any of the above technical solutions, and will not be repeated here. Attached Figure Description

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a schematic diagram of the soft water tank assembly of a soft water machine according to an embodiment of the present invention;

[0030] Figure 2 This is a top view of the water softener tank assembly of a water softener according to an embodiment of the present invention;

[0031] Figure 3 yes Figure 2 A sectional view of the middle plane AA;

[0032] Figure 4 This is a schematic diagram of the water distributor of a water softener according to an embodiment of the present invention.

[0033] List of reference numerals in the attached diagram:

[0034] 1. Soft water tank; 11. Resin containing space; 12. Connector; 121. First opening; 122. Second opening; 2. Water distributor; 21. First water distributor component; 22. Second water distributor component; 221. Diverter; 222. Hollow fiber membrane filament; 23. First central tube; 24. Second central tube; 25. Third water distributor component. Detailed Implementation

[0035] First, those skilled in the art should understand that the embodiments described below are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] It should be noted that in the description of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Based on the problem mentioned in the background art that the water distributor of existing water softeners prevents the softening resin in the water softener tank from fully contacting the brine and thus failing to regenerate effectively, this invention provides a water distributor for a water softener. The water distributor is installed inside the water softener tank, forming a space for accommodating the softening resin between the water softener tank and the water distributor. The water distributor includes a first water distribution component and a second water distribution component, as well as a first water passage and a second water passage respectively connected to the two components. The first water distribution component and the second water distribution component are respectively provided with a plurality of first water passage holes and a plurality of second water passage holes. The space, the first water passage holes, and the first water passage are sequentially connected to form a raw water softening flow path. The second water passage, the second water passage holes, and the space are sequentially connected to form a resin regeneration flow path. The second water passage hole is configured such that the flow area of ​​a single second water passage hole is smaller than the flow area of ​​a single first water passage hole, and when the brine flows through the resin regeneration flow path, the distance from which the brine is sprayed from the second water passage hole is not less than half the radius of the water softener tank.

[0039] With this setup, during raw water softening, the raw water flows along the raw water softening flow path to convert it into soft water. During softening resin regeneration, brine flows along the resin regeneration flow path to regenerate the softening resin. The flow area of ​​a single second water passage is smaller than that of a single first water passage, and the distance the brine sprays from the second water passage is no less than half the radius of the softening tank when it flows through the resin regeneration flow path. This ensures that the brine flowing from the second water passage passes through most of the softening resin, allowing the softening resin to fully contact the brine and thus effectively regenerating the softening resin.

[0040] The following reference Figures 1 to 4 The present invention will now be described. Among other things, Figure 1 This is a schematic diagram of the soft water tank assembly of a soft water machine according to an embodiment of the present invention; Figure 2 This is a top view of the water softener tank assembly of a water softener according to an embodiment of the present invention; Figure 3 yes Figure 2 A sectional view of the middle plane AA; Figure 4 This is a schematic diagram of the water distributor of a water softener according to an embodiment of the present invention.

[0041] like Figures 1 to 3 As shown, the water softener includes a water softener tank assembly, which includes a water softener tank 1 and a water distributor 2 disposed within the water softener tank 1. A resin receiving space 11 is formed between the water softener tank 1 and the water distributor 2 to receive softening resin. The resin receiving space 11 is filled with softening resin. A mounting hole is formed on the top of the water softener tank 1, and a connector 12 is installed on the mounting hole. The connector 12 is generally cylindrical, with external threads formed on its outer peripheral wall and internal threads formed on the inner wall of the mounting hole. The external threads on the connector 12 are screwed together with the internal threads of the mounting hole, so that the connector 12 is installed at the mounting hole. A first opening 121 and a second opening 122 are formed on the connector 12.

[0042] like Figure 3 and Figure 4 As shown, the water distributor 2 includes a first water distribution component 21, a second water distribution component 22, and a first water passage and a second water passage respectively connected to the first water distribution component 21 and the second water distribution component 22. The first water distribution component 21 and the second water distribution component 22 are respectively provided with multiple first water passages and multiple second water passages. The resin containing space 11, the first water passages, and the first water passage are sequentially connected to form a raw water softening flow path, and the second water passage, the second water passages, and the resin containing space 11 are sequentially connected to form a resin regeneration flow path. The flow area of ​​each second water passage is smaller than that of a single first water passage, and when the brine flows through the resin regeneration flow path, the distance from which the brine is ejected from the second water passage is not less than half the radius of the softened water tank 1.

[0043] like Figure 3 and Figure 4 As shown, specifically, the first water distribution element 21 includes a generally cylindrical shell, and the first water passage is a long strip hole evenly distributed around the vertical central axis of the shell on the side wall of the shell. The first water distribution element 21 is located at the bottom center of the soft water tank 1, and an opening is formed at the top of the first water distribution element 21, to which an upwardly extending first central tube 23 is connected. The first central tube 23 is coaxial with the soft water tank 1. The second water distribution element 22 includes a distributor 221 and multiple hollow fiber membrane filaments 222. The distributor 221 includes a distributor shell, and multiple through holes are formed on the four sides of the distributor shell. The two ends of the hollow fiber membrane filaments 222 are respectively connected to two through holes on the distributor shell. Each hollow fiber membrane filament 222 is generally U-shaped, and each hollow fiber membrane filament 222 has multiple micropores distributed along its length as second water passage holes. The flow area of ​​a single micropore is smaller than the flow area of ​​a single long strip hole. An opening is formed at the top of the distributor housing, to which an upwardly extending second central tube 24 is connected. The second central tube 24 passes through and is coaxial with the first central tube 23. The lower part of the distributor 221 extends from the bottom of the housing of the first water distribution element 21, such that the through hole on the distributor housing is located outside the housing of the first water distribution element 21. A U-shaped hollow fiber membrane filament 222 extends generally from the distributor 221 in a radial direction away from the soft water tank 1, and extends to a position close to the side wall of the soft water tank 1. The channel between the first central tube 23 and the second central tube 24 forms a first water passage, and the channel inside the second central tube 24 forms a second water passage. The upper end of the first water passage communicates with the second opening 122 on the connector 12. The upper end of the second central tube 24 passes through the connector 12.

[0044] like Figure 3 and Figure 4 As shown, the water distributor 2 also includes a third water distributor 25, which includes a generally cylindrical housing. The bottom of the housing has a hole through which the first central tube 23 passes. Multiple elongated holes are formed on the outer peripheral wall of the housing. The top of the housing is an open opening. The edge structure of the open opening forms an annular opening with the first central tube 23. The annular opening communicates with the first opening 121 on the connector 12.

[0045] When softening water, raw water flows in from the first opening 121 of the connector 12, and then flows into the resin containing space 11 after being dispersed by the third water distribution member 25. After the raw water flows through the softening resin, it becomes soft water. The soft water flows in from the first water passage on the first water distribution member 21 and then flows out from the second opening 122 on the connector 12 along the channel between the first central pipe 23 and the second central pipe 24 (i.e., the first water path).

[0046] When regeneration of the softening resin within the resin-containing space 11 is required, brine flows from the channel (i.e., the second water path) of the second central pipe 24 to the distributor 221 of the second water distribution element 22. At the distributor 221, the brine is divided into multiple streams that flow into the hollow fiber membrane filaments 222 and are ejected from the micropores (i.e., the second water passages) on the hollow fiber membrane filaments 222. The ejected brine covers most of the softening resin, and the brine regenerates the softening resin through ion exchange. Finally, the wastewater flows out from the first opening 121 on the connector 12 after passing through the elongated holes on the third water distribution element 25.

[0047] With this setup, the softening resin can come into more complete contact with the brine during the regeneration process, thus achieving more effective regeneration of the softening resin.

[0048] The second central pipe 24 is inserted into the first central pipe 23. The channel between the first central pipe 23 and the second central pipe 24 forms the first water path, and the channel inside the second central pipe 24 forms the second water path. This makes the structure of the water distributor 2 more compact, occupies less space, and is easier to install.

[0049] The second water distribution component 22 includes a distributor 221 and multiple hollow fiber membrane filaments 222. Each hollow fiber membrane filament 222 has multiple micropores distributed along its length as second water passages. This facilitates more thorough coverage of the softening resin by the second water passages, allowing the softening resin to come into more complete contact with the sprayed brine, and also makes it easier for the water distributor 2 to be inserted into the softening water tank 1 through the mounting hole at the top of the softening water tank 1.

[0050] It should be noted that the two ends of the hollow fiber membrane filament 222 are respectively connected to two through holes on the distributor housing. Each hollow fiber membrane filament 222 is roughly U-shaped. This is only one specific arrangement and can be adjusted in actual applications. For example, the first end of each hollow fiber membrane filament can be connected to the through hole on the distributor housing, and the second end can be sealed. Each hollow fiber membrane filament extends radially away from the distributor 221 from the first end to the second end along the soft water tank 1. Alternatively, the distributor 221 can be omitted, and multiple hollow fiber membrane filaments 222 can be directly connected to the lower end of the first central tube 23. In addition, the hollow fiber membrane filaments can be replaced with multiple branch pipes of other sizes connected to the lower end of the first central tube 23. The branch pipes can be made of shape memory alloy material to facilitate the installation of the second water distribution component 22.

[0051] It should also be noted that the flow area and number of the second water passages are determined based on the diameter of the soft water tank and the flow rate of the brine. With a fixed diameter of the soft water tank, the distance the brine sprays from the second water passages is essentially fixed. This distance is related to the water pressure within the second water passage, which in turn is related to the flow rate of the brine, the flow area of ​​the second water passages, and the number of the second water passages. Therefore, the flow area and number of the second water passages can be determined based on the diameter of the soft water tank and the flow rate of the brine. The specific calculation method is standard practice in this field and will not be elaborated upon here. Alternatively, the flow area and number of the second water passages can be determined experimentally during the design phase.

[0052] In another feasible embodiment, unlike the above embodiment, the second water distribution component includes a disc-shaped shell with a connection hole at the top center of the disc-shaped shell, which communicates with the lower end of the second central tube 24. The disc-shaped shell is covered with a large number of micropores, and the radius of the disc-shaped shell is not less than half the radius of the second soft water tank.

[0053] In another feasible embodiment, unlike the above embodiment, the channel between the first central pipe 23 and the second central pipe 24 forms a second water path communicating with the second water distribution component, and the channel in the second central pipe 24 forms a first water path communicating with the first water distribution component.

[0054] In another feasible embodiment, unlike the above embodiment, the internal channel of the first central pipe forms a first water path communicating with the first water distribution component. Multiple vertical pipes are evenly distributed around the first central pipe. The upper ends of the multiple vertical pipes are connected to a main pipe and pass through the connector 12. The channels inside the multiple vertical pipes and the main pipe form a second water path. The lower ends of the multiple vertical pipes are connected to the first ends of multiple branch pipes. The second ends of the multiple second branch pipes are blocked. Each branch pipe extends radially inward from the first end to the second end along the soft water tank 1. Multiple second water passage holes are formed on each branch pipe.

[0055] In another feasible embodiment, the second water distribution element can be configured to have a size substantially the same as the first water distribution element, and the flow area of ​​the second water passage is smaller than that of the first water passage. Compared with the prior art, this also improves the regeneration effect of the softening resin, although the regeneration effect of the softening resin is not as good as that in the above embodiment.

[0056] In another feasible embodiment, the third water distribution element 25 in the above embodiment may not be included.

[0057] Preferably, based on the above embodiment where the second water distribution component includes a branch pipe, the flow area of ​​the plurality of second water passage holes distributed sequentially on each branch pipe in a direction away from the second water path decreases sequentially.

[0058] This ensures that the distance from which the brine is sprayed from the second water passage at different positions on the branch pipe is approximately the same, thus allowing the softening resin at different positions to fully contact the brine.

[0059] Preferably, based on the above embodiments, there are multiple second water distribution components, which are distributed along the vertical central axis of the softened water tank. This arrangement allows softening resin at different heights within the softened water tank to simultaneously begin contacting the brine, and the softening resin at different heights to complete regeneration essentially simultaneously. This shortens the overall regeneration time of the softening resin and increases its regeneration speed.

[0060] Preferably, in two adjacent second water distribution components, the flow area of ​​the second water passage hole on the second water distribution component downstream of the second water path is smaller than the flow area of ​​the corresponding second water passage hole on the second water distribution component upstream of the second water path. This arrangement ensures that the flow rate of brine sprayed from the second water distribution components at different heights is consistent, thus synchronizing the regeneration process of the softening resin at different heights.

[0061] In addition, the present invention also provides a water softener, which includes the water distributor of the water softener in any of the above embodiments.

[0062] It should be noted that the water softener can be a water softener that only has the functions of softening water and regenerating resin, or it can also include water purification, heating or other additional functions.

[0063] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A water distributor for a water softener, wherein the water distributor is disposed inside the water softener's water tank, and a space for accommodating softening resin is formed between the water softener and the water distributor, characterized in that, The water distributor includes a first water distribution component and a second water distribution component, as well as a first water passage and a second water passage respectively connected to the two components. The first water distribution component and the second water distribution component are respectively provided with multiple first water passages and multiple second water passages. The space, the first water passages, and the first water passage are sequentially connected to form a raw water softening flow path, and the second water passage, the second water passages, and the space are sequentially connected to form a resin regeneration flow path. The second water passage is configured such that the flow area of ​​a single water passage is smaller than that of a single first water passage, and the distance from which the brine is ejected from the second water passage when the brine flows through the resin regeneration flow path is not less than half the radius of the soft water tank; The number of the second water distribution components is multiple, and the multiple second water distribution components are distributed along the vertical central axis of the soft water tank; In two adjacent second water distribution components, the flow area of ​​the second water passage hole on the second water distribution component downstream of the second water path is smaller than the flow area of ​​the second water passage hole at the corresponding position on the second water distribution component upstream of the second water path.

2. The water distributor according to claim 1, characterized in that, The center of the second water distribution component is located on the vertical central axis of the soft water tank, and the distance from the outer peripheral edge of the second water distribution component to the center is not less than half the radius of the soft water tank.

3. The water distributor according to claim 2, characterized in that, The second water distribution component includes multiple branch pipes evenly distributed around the vertical central axis of the soft water tank. The inlet ends of the multiple branch pipes are connected to the second water passage, and the multiple second water passage holes are distributed on the multiple branch pipes.

4. The water distributor according to claim 3, characterized in that, The flow area of ​​the plurality of second water passages distributed sequentially on each branch pipe in a direction away from the second water passage decreases sequentially.

5. The water distributor according to claim 3, characterized in that, The branch tube is a hollow fiber membrane or the branch tube is made of shape memory alloy.

6. The water distributor according to any one of claims 3 to 5, characterized in that, The second water channel is coaxial with the vertical centerline of the soft water tank.

7. The water distributor according to claim 6, characterized in that, The water distributor includes a first central pipe and a second central pipe sleeved inside the first central pipe; The channel between the first central pipe and the second central pipe, as well as the internal channel of the second central pipe, respectively form the first water path and the second water path, or the channel between the first central pipe and the second central pipe, as well as the internal channel of the second central pipe, respectively form the second water path and the first water path.

8. A water softener, characterized in that, The water softener includes the water distributor of the water softener according to any one of claims 1 to 7.

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