Salt tank assembly and water softener

Abstract

The application relates to the field of soft water equipment, and provides a salt tank assembly and a water softener; the salt tank assembly comprises a tank body, a salt storage box, a main pipe, a branch pipe and a pressure detection piece; a gap exists between the salt storage box and the bottom wall of the tank body, the bottom of the salt storage box is uniformly provided with a plurality of water permeable holes; the lower end of the main pipe is closed, the inside of the lower end is provided with the pressure detection piece, the inside of the main pipe is used for containing solid salt, the solid salt is placed on the pressure detection piece, the side wall of the main pipe is provided with a communication hole, and the top of the communication hole is higher than the top of the pressure detection piece; one end of the branch pipe is communicated with the communication pipe, and the other end is communicated with the salt storage box. The application solves the problems that the solid salt has a slow dissolving speed and cannot be supplemented in time.

Description

Technical Field

[0001] This application relates to the field of water softening equipment, and more particularly to a brine tank assembly and a water softener. Background Technology

[0002] As living standards improve, people have increasingly higher requirements for the quality of the water they use, leading to the widespread application of water softeners. Water softeners typically use resin to soften water and remove scale-forming components (mainly calcium and magnesium ions). However, the resin loses its softening function after a period of use and needs to be regenerated to restore its function. Currently, brine is commonly used to regenerate the degraded resin.

[0003] In traditional water softeners, solid salt is typically placed directly at the bottom of the brine tank assembly. Some of the solid salt dissolves in the water to form brine, while the rest remains solid at the bottom. As the water softener is used continuously, the brine is gradually consumed, requiring water to be added to the brine tank assembly to dissolve the solid salt and regenerate brine.

[0004] However, the above-mentioned salt dissolution methods are slow and difficult to quickly form saturated brine. Furthermore, the brine is prone to stratification, with the lower layer having a higher concentration than the upper layer, all of which affect the resin regeneration effect. In addition, because the solid salt is placed in the brine and its thickness varies in different areas, it is difficult to monitor the remaining amount of solid salt, and timely replenishment is not possible when the solid salt is depleted. Summary of the Invention

[0005] To address the problem of slow dissolution of solid salt and the inability to replenish it in a timely manner, this application provides a salt tank assembly and a water softener.

[0006] The brine tank assembly and water softener provided in this application adopt the following technical solution:

[0007] In a first aspect, this application provides a salt box assembly, comprising:

[0008] Box;

[0009] A salt storage box has a gap between it and the bottom wall of the box body, and the bottom of the salt storage box is evenly provided with multiple water-permeable holes;

[0010] The main pipe is closed at the lower end and has a pressure detection element inside the lower end. The interior of the main pipe is used to contain solid salt, and the solid salt is placed on the pressure detection element. A connecting hole is provided on the side wall of the main pipe, and the top height of the connecting hole is higher than the top height of the pressure detection element.

[0011] The branch pipe has one end connected to the connecting pipe and the other end connected to the salt storage box.

[0012] By adopting the above technical solution, rapid dissolution and residual monitoring of solid salts were achieved. Specific results are as follows:

[0013] The main pipe is connected to the salt storage box via a branch pipe, allowing solid salt in the main pipe to enter the salt storage box. The solid salt in the salt storage box can dissolve in water, creating a concentration difference between the bottom of the salt storage box and the bottom of the tank. This allows the dissolved salt to diffuse downwards through the permeable holes. Since the density of salt is greater than that of water, the salt diffuses from top to bottom, which helps to increase the dissolution rate and makes the salt concentration more uniform in all parts.

[0014] The lower end of the main pipe is closed and equipped with a pressure detection device, which can monitor the weight change of solid salt in real time to determine whether the salt quantity is sufficient. Even when there is no solid salt above the pressure detection device, there is still solid salt inside the branch pipe, which can still meet the working needs of the water softener for a certain period of time.

[0015] Optionally, the salt storage box has multiple salt storage chambers, and the number of branch pipes is equal to the number of salt storage chambers and they correspond one-to-one. The branch pipes are connected to their corresponding salt storage chambers.

[0016] By adopting the above technical solution, uniform distribution of solid salt in the salt tank assembly was achieved. The design of multiple salt storage chambers effectively avoids the accumulation and clumping of solid salt in the salt storage box. The branch pipes correspond one-to-one with the salt storage chambers and are connected to each other, ensuring the supply of solid salt in each salt storage chamber and improving the stability and efficiency of brine preparation.

[0017] Optionally, the permeable pores do not allow solid salt to pass through; or,

[0018] The diameter of the permeable holes is larger than the particle size of the solid salt, and the inner bottom wall of the salt storage box is provided with salt-blocking gauze.

[0019] By adopting the above technical solution, the design of the permeable holes that do not allow solid salt to pass through can effectively prevent solid salt from entering the area below the salt storage box, avoid the accumulation of salt particles at the bottom of the box, which would cause the salt concentration at the bottom of the box to be much higher than that at the top, and also avoid the problem of slow dissolution of salt particles accumulated at the bottom of the box.

[0020] The permeable holes have a larger pore size than the solid salt particles. Combined with the salt-blocking gauze on the bottom wall of the salt storage box, this ensures that the solid salt is confined within the salt storage box. At the same time, the larger pore size increases the contact area between the solid salt and water, thereby increasing the salt dissolution rate and achieving a uniform distribution of salt.

[0021] Optionally, the salt tank assembly has a brine preparation state and a brine pre-preparation state;

[0022] During the brine preparation process, the liquid level in the tank is higher than the bottom wall height of the salt storage box.

[0023] In the pre-prepared brine state, the liquid level in the tank is lower than the bottom wall height of the salt storage box, and the liquid in the tank is pure water or unsaturated brine.

[0024] By adopting the above technical solution, flexible switching of the salt tank component under different states is achieved. The specific effects are as follows:

[0025] 1. During brine preparation, the liquid level is higher than the bottom wall of the salt storage box, allowing the water in the box to effectively wet the solid salt and promote the dissolution process.

[0026] 2. In the pre-prepared brine state, the liquid level is lower than the bottom wall height of the salt storage box, so the water in the tank will not wet the solid salt in the salt storage box and form saturated brine; in addition, the liquid in the tank is pure water or unsaturated brine, which avoids the components being in a high-salt environment for a long time and accelerating corrosion.

[0027] Optionally, the salt tank assembly further includes a salt dispenser, which is connected to the end of the branch pipe opposite to the main pipe, and the salt dispenser has a tapered channel that is narrower at the top and wider at the bottom.

[0028] By adopting the above technical solution, the salt distributor can effectively improve the uniformity of solid salt distribution within the salt storage box. Specifically, the salt distributor is connected to the branch pipe, and its tapered channel design, which is narrower at the top and wider at the bottom, allows solid salt to be more evenly dispersed into the salt storage chamber when it enters the salt storage box, thereby avoiding local accumulation or uneven distribution and improving the overall performance of the salt tank assembly.

[0029] Optionally, there is a gap between the bottom of the salt dispenser and the inner bottom wall of the corresponding salt storage chamber, and the gap is less than the height of the corresponding salt storage chamber.

[0030] By adopting the above technical solution, the design of maintaining a small gap between the bottom of the salt distributor and the inner bottom wall of the salt storage box allows the solid salt entering the salt storage box to spread outwards within a certain range, thus accelerating dissolution. Simultaneously, the amount of solid salt entering the salt storage box will not be excessive. Once the brine is saturated, the solid salt entering the storage box will not dissolve; instead, it will accumulate to a certain height and block the bottom of the conical channel, preventing the continued loss of solid salt from the main pipe after brine saturation, which could lead to inaccuracies in the determination of the remaining solid salt level.

[0031] Optionally, the salt tank assembly further includes a vibrating element;

[0032] The lower end of the main tube has a cavity, and the vibrating element is disposed inside the cavity;

[0033] The inner wall of the main tube is provided with a capacity scale.

[0034] By adopting the above technical solution, the vibrating component can compact the solid salt inside the main pipe, making it easy to visually understand the remaining amount of solid salt through the capacity scale, thus allowing for timely replenishment and ensuring normal equipment operation. Secondly, the vibration effect of the vibrating component allows the solid salt in the main pipe, branch pipes, and salt distributor to flow out smoothly, preventing blockages caused by the solid salt clumping due to moisture. Finally, the vibration of the salt distributor ensures that the solid salt discharged from the salt distributor is more evenly distributed in the salt storage chamber.

[0035] Optionally, the salt tank assembly further includes a cover plate located above the liquid level inside the tank, and the cover plate is fitted against the inner wall of the tank.

[0036] The main pipe passes through the cover plate, and a filling port is provided on the side wall of the main pipe. The part of the cover plate that is penetrated by the main pipe is recessed, and the height of the lowest point of the recess is the same as the bottom height of the filling port.

[0037] The top of the cover is used to store solid salt.

[0038] By adopting the above technical solution, the cover design allows solid salt to be stored on top of the cover, effectively utilizing space and extending the salting cycle. The matching design between the filling port and the recessed part of the cover ensures that the solid salt in the main pipe can be replenished in a timely manner, improving ease of use. In addition, the structure of the cover fitting snugly against the inner wall of the tank increases overall stability and prevents salt from leaching out of the brine and causing salt runoff, which would affect the user experience.

[0039] Optionally, the bottom surface of the salt storage box is arc-shaped.

[0040] By adopting the above technical solution, the bottom surface of the salt storage box is arc-shaped, which can effectively increase the area and thus increase the number of water-permeable holes. This increases the contact area between the solid salt and water in the salt storage box, accelerates the dissolution rate of the solid salt, and quickly obtains the saturated brine required for resin regeneration, thereby improving the working efficiency and reliability of the salt tank assembly.

[0041] Secondly, this application provides a water softener including the brine tank assembly described in any of the above claims.

[0042] By adopting the above technical solution, the brine tank component in the water softener can achieve efficient storage, detection, and distribution of solid salt. The specific effects are as follows:

[0043] 1. The permeable hole design at the bottom of the salt storage box ensures effective water penetration while preventing accidental leakage of solid salt. After the solid salt in the salt storage box dissolves, it can diffuse downwards, which not only improves the uniformity of the brine concentration but also makes the dissolution speed faster.

[0044] 2. The pressure detection device inside the main pipe can monitor the remaining amount of solid salt in real time, and the combination with the capacity scale further improves the accuracy of salt management.

[0045] 3. The one-to-one correspondence between the branch pipes and the salt storage chamber ensures the uniformity of salt flow and improves the operational stability of the water softener.

[0046] 4. The conical channel design of the salt dispenser optimizes the salt distribution efficiency, and its bottom shape is adapted to the cross-section of the salt storage chamber or the circular design, ensuring a more uniform distribution of brine.

[0047] 5. The vibrating element effectively prevents solid salt from clogging the main pipe, thus improving the reliability of the system.

[0048] 6. The cover design not only provides additional storage space for solid salt, but also simplifies the salt adding process and improves the user experience by matching the filling port with the recessed area. Furthermore, the cover fits snugly against the inner wall of the tank, preventing salt particles from appearing at the salt filling port of the water softener due to salt creep, which would otherwise affect the user experience.

[0049] 7. The arc-shaped design of the bottom of the salt storage box increases the contact area between solid salt and water, thus accelerating the dissolution rate of solid salt.

[0050] In summary, by integrating the aforementioned functional modules, this water softener significantly improves the efficiency and reliability of brine preparation while optimizing the user's operating experience.

[0051] In summary, this application includes at least one of the following beneficial technical effects:

[0052] 1. By installing a pressure detection device inside the lower end of the main pipe, the storage amount of solid salt can be monitored in real time to ensure that users replenish the salt in time and avoid unstable water softening effect due to insufficient salt.

[0053] 2. The main pipe distributes solid salt evenly into each salt storage chamber through branch pipes and salt distributors, which not only ensures the uniformity of brine concentration, but also allows the solid salt to dissolve immediately upon use.

[0054] 3. The evenly spaced permeable holes at the bottom of the salt storage box allow water to pass through but prevent solid salt from passing through, ensuring that the salt can continuously diffuse downwards, improving the salt dissolution rate and the uniformity of the brine concentration. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the internal three-dimensional structure of the salt tank assembly provided in this application.

[0056] Figure 2 This is a partial schematic diagram of the salt tank assembly provided in this application.

[0057] Figure 3This is a cross-sectional view of section AA provided in this application.

[0058] Figure 4 This is a schematic diagram of the salt storage box of the salt tank assembly provided in this application.

[0059] Figure 5 This is a three-dimensional structural diagram of the water softener provided in this application.

[0060] Figure 6 This is one of the partial three-dimensional structural schematic diagrams of the water softener provided in this application.

[0061] Figure 7 This is a partial top view of the water softener provided in this application.

[0062] Figure 8 This is the second partial three-dimensional structural schematic diagram of the water softener provided in this application.

[0063] Explanation of reference numerals in the attached figures:

[0064] 1. Box body; 11. Salt inlet;

[0065] 2. Salt storage box; 21. Water permeable hole; 22. Salt storage cavity;

[0066] 3. Main pipe; 31. Connecting hole; 32. Feeding port;

[0067] 4. Branch pipe; 5. Pressure testing device;

[0068] 6. Salt dispenser; 61. Conical channel;

[0069] 7. Cover plate; 8. Vibrating component; 9. Resin tank; 10. Salt valve assembly. Detailed Implementation

[0070] The following is in conjunction with the appendix Figures 1 to 8 This application will be described in further detail.

[0071] like Figures 1 to 6 As shown in the figure, this application discloses a salt tank assembly, including a tank body 1, a salt storage box 2, a main pipe 3, a branch pipe 4, and a pressure detection element 5.

[0072] Specifically, the top of the tank 1 is provided with a salt inlet 11, which is located above the main pipe 3. An overflow valve is provided on the side wall of the tank 1 to prevent excessive water from being added to the tank 1.

[0073] The bottom wall of the salt storage box 2 is evenly provided with multiple permeable holes 21. The interior of the salt storage box 2 has a reinforcing plate, which, in addition to increasing structural strength, divides the interior of the salt storage box 2 into multiple salt storage chambers 22. The salt storage box 2 is located inside the box body 1 and has a certain distance between it and the bottom wall of the box body 1; the specific distance can be determined according to actual needs. Support legs can be provided at the bottom of the salt storage box 2, allowing it to be placed directly inside the box body 1. The outer wall of the salt storage box 2 fits against the inner wall of the box body 1 to prevent the salt storage box 2 from shaking. Flexible pads can be provided on the outer wall of the salt storage box 2 to reduce vibration and noise.

[0074] The main pipe 3 can be installed vertically, with its lower end closed and a pressure detection element 5 inside the lower end. The pressure detection element 5 can be a pressure sensor. Multiple connecting holes 31 are provided on the side wall of the main pipe 3.

[0075] The number of connecting holes 31, branch pipes 4, and salt storage chambers 22 are equal, and any two of them correspond one-to-one. Each connecting hole 31 is connected to the corresponding salt storage chamber 22 through the corresponding branch pipe 4. Among them, the branch pipe 4 is connected to the middle of the corresponding salt storage chamber 22 as much as possible.

[0076] The main pipe 3 contains solid salt, which is then evenly distributed into each salt storage chamber 22 via the branch pipes 4. The solid salt within the main pipe 3 is placed on a pressure detection element 5, which detects the remaining amount of solid salt inside the main pipe 3. The top of the connecting hole 31 is higher than the top of the pressure detection element 5, ensuring smooth outflow of solid salt. Specifically, the pressure detection element 5 may have a raised bump at its upper end, and the bottom of the connecting hole 31 is aligned with the top edge of the bump, allowing solid salt above the bump to flow smoothly into the branch pipes 4, preventing solid salt stagnation and errors in determining the remaining amount.

[0077] The salt tank assembly has a brine preparation state and a brine pre-preparation state.

[0078] In the brine preparation state, the liquid level in the tank 1 is higher than the bottom wall height of the salt storage box 2, so that water can come into contact with the solid salt in the salt storage chamber 22 through the water permeable hole 21. The solid salt dissolves in the water to obtain saturated brine, which can then be used for resin regeneration.

[0079] In the pre-preparation brine state, the liquid level in tank 1 is lower than the bottom wall of salt storage box 2, and the solid salt in salt storage chamber 22 will not dissolve in water. Since resin regeneration consumes salt from the saturated brine, and by changing the water in tank 1, the water in tank 1 can be pure water or unsaturated brine with low salt content when resin regeneration is not required. This avoids accelerated corrosion of components under high-salt conditions for extended periods and also prevents salt precipitation and creep. When preparing for resin regeneration, water can be added to tank 1 until the liquid level is higher than the bottom wall of salt storage box 2, thus switching to brine preparation mode and completing the preparation of saturated brine.

[0080] It should be noted that users can also configure the salt tank assembly to always be in brine preparation mode, ensuring a constant supply of saturated brine in tank 1 for resin regeneration at any time. This configuration, compared to switching between brine preparation and pre-preparation modes, each has its advantages and disadvantages; the specific configuration can be tailored to actual needs.

[0081] In some embodiments, the permeable holes 21 do not allow solid salt to pass through, thereby enabling the solid salt in the salt storage chamber 22 to continuously diffuse downwards when in contact with water, accelerating the dissolution process and improving the uniformity of the brine concentration.

[0082] In other embodiments, the pore size of the permeable hole 21 is larger than the particle size of the solid salt, but the bottom wall of the salt storage box 2 is provided with salt-blocking gauze. The salt-blocking gauze can prevent the solid salt from passing through the permeable hole 21, and the pore size of the permeable hole 21 is relatively large, which can increase the contact area between the solid salt and water and accelerate the dissolution process.

[0083] In some embodiments, the bottom surface of the salt storage box 2 is arc-shaped, specifically wavy. By setting the arc-shaped bottom surface, more water-permeable holes 21 can be provided on the bottom wall of the salt storage box 2, thereby accelerating the dissolution rate of solid salt.

[0084] like Figures 1 to 3 As shown, in some embodiments, the salt tank assembly further includes a salt distributor 6, which is connected to the end of the branch pipe 4 opposite to the main pipe 3. The salt distributor 6 has a tapered channel 61 that is narrower at the top and wider at the bottom. Specifically, solid salt in the branch pipe 4 enters the salt storage chamber 22 through the tapered channel 61, which allows the solid salt to be spread more evenly in the salt storage chamber 22. The bottom of the tapered channel 61 can be annular or adapted to the shape of the cross-section of the corresponding salt storage chamber 22. An annular shape has the advantage of being easy to manufacture, while adapting to the shape of the cross-section of the salt storage chamber 22 can further improve the uniformity of solid salt distribution.

[0085] Furthermore, there is a gap between the bottom of the salt distributor 6 and the inner bottom wall of its corresponding salt storage chamber 22, and this gap is smaller than the height of the corresponding salt storage chamber 22. By setting this gap, the solid salt in the salt distributor 6 can escape the limiting position of the salt distributor 6 and diffuse around during its fall, thus spreading more evenly within the salt storage chamber 22. The gap between the bottom of the salt distributor 6 and the inner bottom wall of its corresponding salt storage chamber 22 is not too large, so that when the brine in the tank 1 is saturated, the solid salt discharged from the salt distributor 6 can remain between the salt distributor 6 and the bottom wall of the salt storage chamber 22, thereby preventing further discharge of solid salt from the salt distributor 6.

[0086] In some embodiments, the salt tank assembly further includes a cover plate 7, which is detachably connected to the side wall of the tank body 1, for example, by snap-fit. The cover plate 7 is located above the liquid level inside the tank body 1, and the cover plate 7 fits snugly against the inner wall of the tank body 1, thereby preventing salt from leaching out of the brine and moving to the salt inlet 11 due to salt creep, thus avoiding affecting the user experience. A flexible pad may also be provided on the outer side wall of the cover plate 7, which allows the cover plate 7 to fit more tightly against the inner wall of the tank body 1 and also serves to reduce vibration and noise.

[0087] The main pipe 3 penetrates the cover plate 7, and the main pipe 3 and the cover plate 7 can be integrally formed. A filling port 32 is provided on the side wall of the main pipe 3. The portion of the cover plate 7 through which the main pipe 3 penetrates is recessed, and the lowest point of the recess is at the same height as the bottom of the filling port 32. The top of the cover plate 7 can be used to store solid salt, thereby extending the salting cycle. As the solid salt in the main pipe 3 is gradually consumed, the solid salt above the cover plate 7 can enter the main pipe 3 through the filling port 32, thereby compensating for the salt loss in the main pipe 3.

[0088] Once the solid salt above the cover plate 7 and inside the main pipe 3 is depleted, the pressure detected by the pressure sensor 5 will be zero or close to zero. A control module and an indicator can be configured, both connected to the control module. When the pressure detected by the pressure sensor 5 falls below a preset value, the indicator will sound an alarm to remind the user to replenish the solid salt. When the user replenishes salt through the salt inlet 11, it doesn't matter whether the solid salt falls onto the cover plate 7 or into the main pipe 3, reducing the difficulty of replenishing salt. Furthermore, since solid salt remains in the branch pipe 4 and the salt distributor 6 even after the salt in the main pipe 3 is depleted, the salt tank assembly can continue to produce brine for a period of time even if the user does not replenish salt in time. The indicator mentioned above can be an indicator light.

[0089] In some embodiments, the inner wall of the main pipe 3 is provided with a capacity scale. When the solid salt on the cover plate 7 is exhausted, the user can roughly judge the remaining amount of solid salt by observing the capacity scale.

[0090] like Figure 1and Figure 3 As shown, in some embodiments, the lower end of the main pipe 3 has a cavity, and a vibrating element 8 is provided inside the cavity. The vibrating element 8 can be a vibration motor, which is connected to the control module. The vibration of the vibration motor has the following effects: First, the vibration allows the solid salt above the cover plate 7 to flow smoothly into the main pipe 3, so that the tilt of the top surface of the cover plate 7 does not need to be too large; Second, the vibration allows the solid salt in the main pipe 3, branch pipe 4 and salt distributor 6 to flow smoothly, avoiding blockage due to the solid salt clumping due to moisture; Third, the vibration of the salt distributor 6 when discharging solid salt into the salt storage chamber 22 can make the salt distribution more uniform; Fourth, the vibration can compact the solid salt in the main pipe 3, making it easier for the user to know the remaining amount of solid salt in the main pipe 3 according to the capacity scale.

[0091] like Figures 5 to 8 As shown, this application also provides a water softener, including a resin tank 9, a salt valve assembly 10, and a salt tank assembly of any of the above embodiments. The resin tank 9 is disposed inside the housing 1, and the salt valve assembly 10 penetrates the salt storage box 2. The salt valve assembly 10 performs resin regeneration by introducing brine from the housing 1 into the resin tank 9. Both the salt valve assembly 10 and the resin tank 9 are conventional technologies and will not be described in detail here.

Claims

1. A salt tank assembly, characterized in that, include: Box (1); There is a gap between the salt storage box (2) and the bottom wall of the box body (1), and the bottom of the salt storage box (2) is evenly provided with a plurality of water-permeable holes (21). The main pipe (3) is closed at the lower end and has a pressure detection element (5) inside the lower end. The main pipe (3) is used to contain solid salt, and the solid salt is placed on the pressure detection element (5). The side wall of the main pipe (3) has a connecting hole (31), and the top height of the connecting hole (31) is higher than the top height of the pressure detection element (5). Branch pipe (4), one end of which is connected to the connecting hole (31), and the other end of which is connected to the salt storage box (2); The salt storage box (2) has multiple salt storage chambers (22), and the number of branch pipes (4) is equal to that of the salt storage chambers (22) and they correspond one-to-one. The branch pipes (4) are connected to the corresponding salt storage chambers (22). The salt tank assembly also includes a salt dispenser (6), which is connected to the end of the branch pipe (4) away from the main pipe (3). The salt dispenser (6) has a tapered channel (61) that is narrow at the top and wide at the bottom. There is a gap between the bottom of the salt dispenser (6) and the inner bottom wall of the corresponding salt storage chamber (22), and the gap between the two satisfies that: when the brine in the box (1) is saturated, the solid salt discharged from the salt dispenser (6) can remain between the salt dispenser (6) and the bottom wall of the salt storage chamber (22). The salt tank assembly also includes a vibrating element (8); the lower end of the main pipe (3) has a cavity, and the vibrating element (8) is disposed in the cavity; the inner wall of the main pipe (3) is provided with a capacity scale; The salt tank assembly also includes a cover plate (7), which is located above the liquid level in the tank body (1) and is in contact with the inner wall of the tank body (1). The main pipe (3) penetrates the cover plate (7), and a feeding port (32) is provided on the side wall of the main pipe (3). The part of the cover plate (7) penetrated by the main pipe (3) is recessed, and the height of the lowest point of the recess is consistent with the bottom height of the feeding port (32). The top of the cover plate (7) is used to store solid salt.

2. The salt tank assembly according to claim 1, characterized in that: The permeable pores (21) do not allow solid salt to pass through; or, The diameter of the permeable hole (21) is larger than the particle size of the solid salt, and the bottom wall of the salt storage box (2) is provided with salt-blocking gauze.

3. The salt tank assembly according to claim 1, characterized in that: The salt tank assembly has a brine preparation state and a brine pre-preparation state; In the brine preparation state, the liquid level in the tank (1) is higher than the bottom wall height of the salt storage box (2); In the pre-prepared brine state, the liquid level in the tank (1) is lower than the bottom wall height of the salt storage box (2), and the liquid in the tank (1) is pure water or unsaturated brine.

4. The salt tank assembly according to claim 1, characterized in that: The bottom surface of the salt storage box (2) is arc-shaped.

5. A water softener, characterized in that, Includes the salt tank assembly as described in any one of claims 1-4.

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