Resin tank and water softener

Abstract

The present invention relates to a resin tank and a water softener. The resin tank comprises: a tank body, a water collecting pipe arranged in the tank body, and a resin extrusion piece arranged on the water collecting pipe so as to slide up and down; the tank body is provided with a resin storage area, the lower end of the water collecting pipe extends into the resin storage area, and the upper end of the water collecting pipe is provided with a first water distributor located above a plurality of resins; the resin extrusion piece is located below the first water distributor, and the resin extrusion piece can slide downward into the resin storage area, and the resin extrusion piece is provided with a plurality of first water holes, and the aperture of the first water hole is smaller than the particle size of the resin. The resin extrusion piece of the above resin tank can extrude the resin downward, reduce the porosity between the resins, and thereby realize the hardness of the initial water production greater than 0ppm, reduce the initial utilization load of the resin, realize the increase of the water production of the whole machine cycle under the same salt consumption conditions, extend the interval between two regeneration cycles, so that the number of regenerations can be reduced within the same time, and achieve the effect of saving salt and water.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to a resin tank and a water softener thereof. Background Art

[0002] As we all know, the hardness of water will affect people's life experience. For example, long-term use of high-hardness water will cause rough skin and tangled hair. It will also cause yellowing of clothes and scaling of water heaters. At present, in order to reduce the hardness of water, it is usually treated with a water softener. Among them, during the water production cycle of the water softener, the initial water hardness is equal to 0ppm, and the subsequent water hardness is greater than 0ppm and less than or equal to 30ppm. However, for soft water with a hardness within 30ppm, the user experience is not obvious. When the water hardness is 0ppm, it is equivalent to completely removing the raw water hardness in the initial stage, resulting in a large resin utilization load, which is not conducive to the increase of the resin cycle water production. It will cause a short interval between two regenerations and frequent regeneration, resulting in high salt consumption, which is not conducive to salt saving. Summary of the invention

[0003] In view of the current situation that the initial water hardness of existing water softeners is zero and the resin utilization load is large, and the problem that the water hardness between 0-30ppm is not clearly distinguished, the present invention provides a resin tank and a water softener, which can reduce the initial utilization load of the resin to increase the cycle water production, extend the interval between two regenerations, and achieve the effect of saving salt.

[0004] A resin tank, characterized in that the resin tank comprises: a tank body, a water collecting pipe arranged in the tank body, and a resin extrusion piece arranged on the water collecting pipe so as to be slidable upward and downward;

[0005] The tank body has a resin storage area, the lower end of the water collecting pipe extends into the resin storage area, and the upper end of the water collecting pipe is provided with a first water distributor located above the plurality of resins;

[0006] The resin extrusion piece is located below the first water distributor, and can slide downward into the resin storage area. The resin extrusion piece is provided with a plurality of first water holes, and the aperture of the first water holes is smaller than the particle diameter of the resin.

[0007] As described above, the resin tank is provided with a resin extrusion part that can slide up and down on the water collecting pipe. Then, when producing water, the raw water can apply pressure to the non-porous part of the resin extrusion part through the first water distributor to push the resin extrusion part to slide downward, thereby causing the resin extrusion part to squeeze the resin downward, reducing the porosity between the resins, shortening the contact time between the raw water and the resin, and thereby achieving an initial water hardness greater than 0 ppm, reducing the initial utilization load of the resin, and achieving an increase in the water production of the entire machine cycle under the same salt consumption conditions. At the same time, the interval between the two regeneration cycles is extended, so that the number of regenerations can be reduced within the same time, thereby achieving the effect of saving salt and water.

[0008] In one embodiment, the resin tank further comprises: an elastic member disposed between the first water distributor and the resin extrusion member, and the elastic member is in a non-limit tension state.

[0009] In one embodiment, the elastic member is a spring sleeved on the water collecting pipe.

[0010] In one embodiment, the first water distributor is provided with a first mounting protrusion or a first mounting groove for fixing the upper end of the elastic member;

[0011] And / or, the resin extrusion piece is provided with a second mounting protrusion or a second mounting groove for fixing the lower end of the elastic piece.

[0012] In one embodiment, a mounting ring is provided on a wall of the resin extrusion member close to the first water distributor, and the second mounting groove is provided on the mounting ring.

[0013] In one embodiment, a second water distributor is provided at the lower port of the water collecting pipe.

[0014] In one embodiment, a multi-way valve is provided at the tank mouth of the tank body, and the multi-way valve is connected to the first water distributor.

[0015] In one embodiment, the tank body includes: a lower tank body and an upper tank body covered on the lower tank body.

[0016] In one embodiment, the upper edge of the lower tank body is provided with a first fixing protrusion, and the lower edge of the upper tank body is provided with a second fixing protrusion;

[0017] The first fixing protrusion and the second fixing protrusion are connected by spin welding or clamping.

[0018] A water softener comprises a resin and any one of the above resin tanks, wherein the resin is located in a resin storage area of ​​a tank body of the resin tank.

[0019] In the water softener as described above, a resin extrusion piece capable of sliding up and down is arranged on the water collecting pipe of the resin tank. Then, when producing water, the raw water can apply pressure to the non-porous part of the resin extrusion piece through the first water distributor to push the resin extrusion piece to slide downward, thereby causing the resin extrusion piece to squeeze the resin downward, reducing the porosity between the resins, shortening the contact time between the raw water and the resin, and thereby achieving an initial water hardness greater than 0 ppm, reducing the initial utilization load of the resin, and achieving an increase in the water production of the entire machine cycle under the same salt consumption conditions. At the same time, the interval between the two regeneration cycles is extended, so that the number of regenerations can be reduced within the same time, thereby achieving the effect of saving salt and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of an explosion of a resin tank provided in one embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the internal liquid flow of a resin tank in a water production state provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the internal liquid flow of a resin tank in a backwash state provided by an embodiment of the present invention;

[0023] Figure 4 A top view of a resin extrusion member provided in one embodiment of the present invention;

[0024] Figure 5 A cross-sectional view of a resin extrusion member provided in one embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal liquid flow of the existing resin tank in the water production state;

[0026] Figure 7 A schematic diagram of the structure of a first water distributor provided in one embodiment of the present invention;

[0027] Figure 8 A schematic structural diagram of a second water distributor provided in one embodiment of the present invention.

[0028] The descriptions of the various reference numerals in the accompanying drawings are as follows:

[0029] 100, tank body; 100a, resin; 120, upper tank body; 111, first fixed protrusion; 110, lower tank body; 121, second fixed protrusion; 200, water collecting pipe; 210, first water distributor; 210a, first water flow channel; 210b, second water flow channel; 211, first mounting protrusion; 212, inner shell; 213, outer shell; 220, second water distributor; 221, mounting seat; 222, water distribution sheet; 300, resin extrusion; 300a, first water hole; 300b, second mounting groove; 300c, center hole; 310, mounting ring; 400, elastic member; 500, multi-way valve. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] like Figures 1 to 3 As shown, an embodiment of the present invention provides a resin tank, which includes: a tank body 100, a water collecting pipe 200 disposed in the tank body 100, and a resin extrusion piece 300 slidably disposed on the water collecting pipe 200; the tank body 100 has a resin storage area, the lower end of the water collecting pipe 200 extends into the resin storage area, and the upper end of the water collecting pipe 200 is provided with a first water distributor 210 located above a plurality of resins 100a; the resin extrusion piece 300 is located below the first water distributor 210, and the resin extrusion piece 300 can slide downward into the resin storage area, and the resin extrusion piece 300 has a plurality of first water holes 300a, and the aperture of the first water hole 300a is smaller than the particle size of the resin 100a. It should be noted that the resin storage area of ​​the tank body 100 is used to store the resin 100a.

[0037] As an example, the resin extrusion part 300 is a columnar structure or Figures 1 to 5The disk-shaped structure shown. The central hole 300c of the resin extrusion 300 is used to allow the water collecting pipe 200 to pass through. The structure of the cross section of the resin extrusion 300 is adapted to the structure of the cross section of the tank body 100. For example, if the cross section of the tank body 100 is circular, the cross section of the resin extrusion 300 is annular, the outer diameter of the resin extrusion 300 is equal to or slightly smaller than the inner diameter of the tank body 100, and the inner diameter of the resin extrusion 300 is equal to or slightly larger than the diameter of the water collecting pipe 200.

[0038] As an example, Figure 3 As shown, the first water holes 300a are evenly distributed on the resin extrusion member 300, and combined with the first water distributor 210, the resin 100a in the resin tank can be more fully utilized, thereby extending the cycle water production. Among them, the first water hole 300a can be a circular hole, a strip hole, a square hole, etc., and the embodiment of the present invention does not specifically limit it.

[0039] As an example, optionally, Figure 7 As shown, the first water distributor 210 includes: an inner shell 212 and an outer shell 213; the inner cavity of the inner shell 212 constitutes a first water flow channel 210a and communicates with the upper port of the water collecting pipe 200; a second water flow channel 210b is formed between the outer shell 213 and the inner shell 212 and communicates with the inner cavity of the tank body 100, and a plurality of evenly distributed second water holes are provided on each wall of the outer shell 213. The outer shell 213 can be roughly Figure 7 The truncated cone structure shown. The second water hole can be a circular hole, a strip hole, a square hole, etc., and the embodiment of the present invention does not impose specific restrictions. When making water, the raw water flows into the first water flow channel 210a of the first water distributor 210 and flows to the upper surface of the resin extrusion 300 through the second water hole on the outer shell 213, and flows out through the lower port of the water collecting pipe 200 after the resin 100a is softened; when backwashing, the cleaning liquid flows into the second water flow channel 210b of the first water distributor 210 and flows to the failed resin 100a through the lower port of the water collecting pipe 200, and flows out through the first water flow channel 210a of the first water distributor 210 after cleaning.

[0040] Combine the following Figure 2 , Figure 3 and Figure 6 The water production process of the resin tank is described, including Figure 2 , Figure 3 and Figure 6 The arrows in the figure represent the direction of liquid flow:

[0041] When making water, the raw water flows to the upper surface of the resin extrusion member 300 in the tank body 100 through the first water distributor 210. Since the resin extrusion member 300 is a porous structure, a part of the raw water acts on the non-porous part of the resin extrusion member 300, thereby generating downward pressure on the resin extrusion member 300. The resin extrusion member 300 then slides downward along the water collecting pipe 200 to squeeze the resin 100a, and the height of the resin 100a is increased from 1.3 to 2.5. Figure 6 The height H0 of the resin 100a shown is compressed to Figure 2 The height H1 of the resin 100a shown reduces the porosity between the resins 100a. Based on V=Q / S and t=H / V, it can be concluded that the contact time between the raw water and the resin 100a is shortened, and the hardness of the initial water production is greater than 0ppm. After the raw water passes through the first water hole 300a of the resin extrusion part 300, it contacts with the resin 100a to soften, and then flows out of the tank body 100 through the lower port of the water collecting pipe 200. Wherein, V refers to the linear flow rate of the incoming water, m / h; Q refers to the flow rate of the incoming water, m 3 / h; S refers to the water flow area of ​​100a of resin, m 2 ; t refers to the contact time between the incoming water and the resin 100a, h; H refers to the height of the resin 100a, m.

[0042] As described above, the resin tank is provided with a resin extrusion piece 300 that can slide up and down on the water collecting pipe 200. Then, when producing water, the raw water can apply pressure to the non-porous part of the resin extrusion piece 300 to push the resin extrusion piece 300 to slide downward, thereby causing the resin extrusion piece 300 to squeeze the resin 100a downward, reducing the porosity between the resin 100a, shortening the contact time between the raw water and the resin 100a, and thereby achieving an initial water hardness greater than 0ppm, reducing the initial utilization load of the resin 100a, and achieving an increase in the water production of the entire machine cycle under the same salt consumption conditions. At the same time, the interval between the two regeneration cycles is extended, so that the number of regenerations can be reduced within the same time, thereby achieving the effect of saving salt and water.

[0043] like Figures 1 to 3 As shown, in some embodiments of the present invention, the resin tank further includes: an elastic member 400 disposed between the first water distributor 210 and the resin extrusion member 300, and the elastic member 400 is in a non-limited tensile state. The elastic member 400 can not only pre-fix the resin extrusion member 300, but also limit the upward movement distance of the resin extrusion member 300 under the action of the cleaning liquid when the resin tank is backwashed, so as to ensure that the volume of the resin 100a after expansion increases by 20% to 30%, wherein the resin 100a is composed of Figure 2 The height H1 of the resin 100a shown is expanded to Figure 3 The resin 100a is shown to have a height H2.

[0044] Alternatively, if Figures 1 to 3As shown, the elastic member 400 is a spring sleeved on the water collecting pipe 200. The elastic member 400 of this type of structure has good elasticity and is easy to obtain. Of course, in some other embodiments of the present invention, the elastic member 400 can also be a cylindrical structure made of elastic material (such as rubber).

[0045] Specifically, in some embodiments of the present invention, the first water distributor 210 is provided with a first mounting groove or a first mounting groove for fixing the upper end of the elastic member 400. Figure 1 , Figure 7 and / or, the resin extrusion member 300 is provided with a second mounting protrusion or a lower end of the elastic member 400 for fixing the mounting protrusion; Figure 1 , Figure 4 and Figure 5 The second mounting groove 300b is shown. It can be understood that the upper end of the elastic member 400 is inserted into the first mounting groove or sleeved on the outside of the first mounting protrusion 211; the lower end of the elastic member 400 is sleeved on the outside of the second mounting protrusion or inserted into the second mounting groove 300b. The upper and lower ends of the elastic member 400 can be positioned to ensure that the elastic member 400 is deformed or reset along the target direction.

[0046] Alternatively, if Figure 5 As shown, a mounting ring 310 is provided on the wall of the resin extrusion part 300 close to the first water distributor 210, and the second mounting groove 300b is provided on the mounting ring 310. It can be understood that the resin extrusion part 300 is provided with a central hole 300c for the water collecting pipe 200 to pass through, and the mounting ring 310 surrounds the central hole 300c. In this way, there is no need to directly provide the second mounting groove 300b on the resin extrusion part 300, which can not only improve the strength of the resin extrusion part 300, but also increase the depth of the second mounting groove 300b by increasing the thickness of the mounting ring 310, thereby improving the limiting effect on the second end of the elastic member 400. Among them, the mounting ring 310 can be connected to the resin extrusion part 300 by welding or integrated molding.

[0047] In some embodiments of the present invention, Figures 1 to 3 As shown, a second water distributor 220 is provided at the lower end of the water collecting pipe 200. The second water distributor 220 makes the water distribution more uniform, improves the cleaning effect of the failed resin 100a, and can also effectively collect the produced water.

[0048] Alternatively, if Figure 8As shown, the second water distributor includes: a mounting seat 221 connected to the lower port of the water collecting pipe 200, a plurality of water distribution sheets 222 distributed around the mounting seat 221 and connected to the mounting seat 221, and a plurality of third water holes on each wall of the water distribution sheet 222. Among them, the third water hole can be a circular hole, a strip hole, a square hole, etc., and the embodiment of the present invention does not impose specific restrictions. When making water, the raw water is softened by the resin 100a and first flows to the water distribution sheet 222 through the third water hole, and then flows into the lower port of the water collecting pipe 200 through the mounting seat 221 for discharge. When backwashing, the cleaning liquid flows from the mounting seat 221 to the water distribution sheet 222 through the water collecting pipe 200, and then flows to the failed resin 100a through the third water hole on the water distribution sheet 222.

[0049] In some embodiments of the present invention, Figures 1 to 3 As shown, a multi-way valve 500 is provided at the tank mouth of the tank body 100, and the multi-way valve 500 is connected to the first water distributor 210. The multi-way valve 500 can control the opening and closing of each water channel through a controller to ensure the normal operation of each working mode of the resin tank (such as water production mode, backwash mode). It should be noted that the lower port of the multi-way valve 500 is respectively connected to the first water flow channel 210a and the second water flow channel 210b of the first water distributor 210.

[0050] In some embodiments of the present invention, Figures 1 to 3 As shown, the tank body 100 includes: a lower tank body 110 and an upper tank body 120 covered on the lower tank body 110. In this way, the assembly of the internal components of the resin tank is facilitated. During assembly, first glue the water collecting pipe 200 and the second water distributor 220 together with glue, and install them in the center of the lower tank body 110 after solidification; then pour the resin 100a into the lower tank body 110, and at the same time bury the lower end of the water collecting pipe 200 in the lower tank body 110; then put the resin extrusion part 300 on the water collecting pipe 200; then install the elastic part 400 in the second installation groove 300b of the resin extrusion part 300 for fixation; then seal the upper tank body 120 and the lower tank body 110 together; then install the first water distributor 210 on the multi-way valve 500, and then install it as a whole on the upper port of the upper tank body 120 (i.e., the tank mouth of the tank body 100) by threading, and make the upper end of the elastic part 400 be put on the outside of the first fixing protrusion 111 of the first water distributor 210.

[0051] Further, in some embodiments of the present invention, Figure 1 As shown, the upper edge of the lower tank body 110 is provided with a first fixing protrusion 111, and the lower edge of the upper tank body 120 is provided with a second fixing protrusion 121; the first fixing protrusion 111 and the second fixing protrusion 121 are connected by spin welding or clamping. In this way, the upper tank body 120 and the lower tank body 110 can be sealed.

[0052] Optionally, the first fixing protrusion 111 may be connected to the lower tank body 110 by welding or integrated molding; the second fixing protrusion 121 may be connected to the upper tank body 120 by welding or integrated molding.

[0053] Another embodiment of the present invention provides a water softener, which includes a resin 100a and any one of the above-mentioned resin tanks, wherein the resin 100a is located in a resin storage area of ​​a tank body 100 of the resin tank.

[0054] Combine the following Figure 2 , Figure 3 and Figure 6 The water production process of the resin tank is described, including Figure 2 , Figure 3 and Figure 6 The arrows in the figure represent the direction of liquid flow:

[0055] When making water, the raw water flows to the upper surface of the resin extrusion member 300 in the tank body 100 through the first water distributor 210. Since the resin extrusion member 300 is a porous structure, a part of the raw water acts on the non-porous part of the resin extrusion member 300, thereby generating downward pressure on the resin extrusion member 300. The resin extrusion member 300 then slides downward along the water collecting pipe 200 to squeeze the resin 100a, and the height of the resin 100a is increased from 1.3 to 2.5. Figure 4 The height H0 of the resin 100a shown is compressed to Figure 2 The height H1 of the resin 100a shown reduces the porosity of the resin 100a. Based on V=Q / S and t=H / V, it can be concluded that the contact time between the raw water and the resin 100a is shortened, and the hardness of the initial water production is greater than 0ppm. After the raw water passes through the first water hole 300a of the resin extrusion part 300, it contacts with the resin 100a to soften, and then flows out of the tank body 100 through the lower port of the water collecting pipe 200. Among them, V refers to the linear flow rate of the incoming water, m / h; Q refers to the flow rate of the incoming water, m3 / h; S refers to the water flow area of ​​the resin 100a, m2; t refers to the contact time between the incoming water and the resin 100a, h; H refers to the height of the resin 100a, m.

[0056] In the water softener as described above, the water collecting pipe 200 of the resin tank is provided with a resin extrusion piece 300 that can slide up and down. Then, when producing water, the raw water can apply pressure to the non-porous part of the resin extrusion piece 300 to push the resin extrusion piece 300 to slide downward, thereby causing the resin extrusion piece 300 to squeeze the resin 100a downward, reducing the porosity between the resin 100a, shortening the contact time between the raw water and the resin 100a, and thereby achieving an initial water hardness greater than 0ppm, reducing the initial utilization load of the resin 100a, and achieving an increase in the water production of the entire machine cycle under the same salt consumption conditions. At the same time, the interval between the two regeneration cycles is extended, so that the number of regenerations can be reduced within the same time, thereby achieving the effect of saving salt and water.

[0057] In some embodiments of the present invention, the water softener further comprises: a salt box, in which a salt well is arranged; a resin tank is arranged in the salt box, and an upper port of the salt well is connected to the multi-way valve 500. The resin tank is arranged integrally with the salt box, so that the structure of the water softener is compact.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A resin tank, characterized in that: include: A tank body (100), a water collecting pipe (200) disposed in the tank body (100), and a resin extrusion piece (300) disposed on the water collecting pipe (200) so as to be slidable upward and downward; The tank body (100) has a resin storage area in it, the lower end of the water collecting pipe (200) extends into the resin storage area, and the upper end of the water collecting pipe (200) is provided with a first water distributor (210) located above a plurality of resins (100a); The resin extrusion piece (300) is located below the first water distributor (210), and the resin extrusion piece (300) can slide downward into the resin storage area. The resin extrusion piece (300) has a plurality of first water holes (300a), and the aperture of the first water holes (300a) is smaller than the particle size of the resin (100a); A mounting ring (310) is provided on the wall of the resin extrusion member (300) close to the first water distributor (210), and a second mounting groove (300b) is provided on the mounting ring (310).

2. The resin tank according to claim 1, characterized in that: The resin tank further comprises: an elastic member (400) arranged between the first water distributor (210) and the resin extrusion member (300), wherein the elastic member (400) is in a non-limit tension state.

3. The resin tank according to claim 2, characterized in that: The elastic member (400) is a spring sleeved on the water collecting pipe (200).

4. The resin tank according to claim 2, characterized in that: The first water distributor (210) is provided with a first mounting protrusion (211) or a first mounting groove for fixing the upper end of the elastic member (400).

5. The resin tank according to any one of claims 1 to 4, characterized in that: A second water distributor (220) is provided at the lower end of the water collecting pipe (200).

6. The resin tank according to any one of claims 1 to 4, characterized in that: A multi-way valve (500) is provided at the tank opening of the tank body (100), and the multi-way valve (500) is in communication with the first water distributor (210).

7. The resin tank according to any one of claims 1 to 4, characterized in that: The tank body (100) comprises: a lower tank body (110) and an upper tank body (120) which is covered on the lower tank body (110).

8. The resin tank according to claim 7, characterized in that: The upper edge of the lower tank body (110) is provided with a first fixing protrusion (111), and the lower edge of the upper tank body (120) is provided with a second fixing protrusion (121); The first fixing protrusion (111) and the second fixing protrusion (121) are connected by spin melting or clamping.

9. A water softener, characterized in that: The water softener comprises a resin (100a) and the resin tank according to any one of claims 1 to 8, wherein the resin (100a) is located in a resin storage area of ​​a tank body (100) of the resin tank.

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