Water softener and water treatment system

Abstract

The utility model discloses a water softener and a water treatment system.The water softener comprises a control valve, a salt suction and water injection pipeline, a salt box and a liquid level detection assembly, the control valve comprises a valve body and a control assembly, the control assembly is connected with the valve body, the valve body comprises a water inlet and a salt suction and water injection opening, and the water inlet can be communicated with the salt suction and water injection opening; the salt-absorbing water injection pipeline is connected to the salt-absorbing water injection port; one end, far away from the salt suction water injection port, of the salt suction water injection pipeline extends to the bottom of the salt box; the liquid level detection assembly is arranged in the containing cavity and connected to the bottom wall of the salt box. The liquid level detection assembly is electrically connected with the control assembly. The liquid level detection assembly is arranged on the bottom wall of the salt box, so that the change condition of the liquid level in the salt box can be monitored in real time, the water injection and salt absorption process can be accurately monitored, whether salt absorption or water injection of the water softener is normal or not can be judged, and whether water leaks in the water softener or not can be found in time; and the cleaning and regeneration efficiency and quality of the resin tank can also be obviously improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water treatment, and particularly relates to a soft water machine and a water treatment system. BACKGROUND

[0002] The soft water machine needs to inject water into the salt tank and suck salt from the salt tank to clean the resin tank after working for a period of time. Appropriate water is the key to ensuring that the salt can be dissolved and form salt water with a proper concentration. If the water is too little, the regenerated salt water is correspondingly less, and the regeneration effect will be greatly reduced. If the water is too much, the salt water concentration is too low, which will also affect the regeneration efficiency. Generally, the salt water concentration in the salt tank is kept near the saturation concentration, which is more appropriate. However, the salt tank is usually closed, and the water injection condition therein cannot be completely expected, so it is impossible to determine whether the salt sucking or water injection is normal. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to solve the problem that the existing soft water machine cannot determine whether the water quantity of salt sucking or water injection is normal. Another object of the application is to provide a water treatment system.

[0004] TECHNICAL SCHEME: The soft water machine provided by the application comprises:

[0005] A control valve comprising a valve body and a control assembly, the control assembly being connected to the valve body, the valve body comprising a water inlet and a salt sucking and water injecting port, and the water inlet being capable of communicating with the salt sucking and water injecting port;

[0006] A salt sucking and water injecting pipeline connected to the salt sucking and water injecting port;

[0007] A salt tank having a containing cavity, and an end of the salt sucking and water injecting pipeline away from the salt sucking and water injecting port extending to the bottom of the salt tank;

[0008] A liquid level detection assembly arranged in the containing cavity and connected to the bottom wall of the salt tank, and the liquid level detection assembly being electrically connected to the control assembly.

[0009] In some embodiments, the containing cavity is provided with soft water salt, the soft water salt covers the liquid level detection assembly, and an end of the salt sucking and water injecting pipeline located in the containing cavity is arranged in the soft water salt.

[0010] In some embodiments, the soft water machine comprises a resin tank, the resin tank is arranged in the containing cavity and connected to the valve body, the control valve and the salt sucking and water injecting pipeline are arranged in the containing cavity, the valve body comprises a water outlet, the water inlet and the water outlet both pass through the outside of the salt tank, and the resin tank is capable of communicating with the water inlet and the water outlet.

[0011] In some embodiments, the water softener further includes a fixing member disposed in the receiving cavity and connected to the inner wall of the salt tank and the resin tank, respectively.

[0012] In some embodiments, the liquid level detection component includes:

[0013] The counterweight housing has a receiving cavity and is in contact with the bottom wall of the salt tank;

[0014] A liquid level sensor is disposed within the accommodating cavity and is electrically connected to the control component.

[0015] In some embodiments,

[0016] The counterweight housing has a first opening, which communicates with the accommodating cavity; the detection end of the liquid level sensor is disposed in the first opening, which faces the bottom wall.

[0017] The liquid level detection component also includes:

[0018] The filter assembly is sealed to the counterweight housing and covers the first opening. The filter assembly has a second opening, which is opposite to the detection end of the liquid level sensor. The side of the filter assembly away from the first opening is in contact with the bottom wall.

[0019] A sealing ring is disposed at intervals between the liquid level sensor and the filter assembly, and is respectively sealed to the liquid level sensor and the filter assembly. The sealing ring is arranged around the second opening.

[0020] In some embodiments,

[0021] The counterweight housing has a third opening, which communicates with the accommodating cavity;

[0022] The liquid level sensor is connected to the control component via a wire, which passes through the third opening;

[0023] The liquid level detection assembly also includes a wire harness seal, which is sleeved on the outside of the wire and embedded in the third opening. The wire harness seal is sealed to the wire and the counterweight housing respectively.

[0024] In some embodiments, the liquid level sensor is a pressure sensor.

[0025] In some embodiments, the water softener further includes a bidirectional flow meter, which is disposed on the brine injection pipeline and electrically connected to the control component.

[0026] Accordingly, the water treatment system described in this application includes a water softener as described in any of the foregoing embodiments.

[0027] Beneficial Effects: Compared with the prior art, a water softener according to an embodiment of this application includes a control valve, a brine suction and water injection pipeline, a brine tank, and a liquid level detection component. The control valve includes a valve body and a control component, with the control component connected to the valve body. The valve body includes a water inlet and a brine suction and water injection outlet, with the water inlet communicating with the brine suction and water injection outlet. The brine suction and water injection pipeline is connected to the brine suction and water injection outlet. The brine tank has a receiving cavity, with one end of the brine suction and water injection pipeline extending to the bottom of the brine tank away from the brine suction and water injection outlet. The liquid level detection component is disposed within the receiving cavity and connected to the bottom wall of the brine tank. The liquid level detection component is electrically connected to the control component. By setting a liquid level detection component on the bottom wall of the brine tank and electrically connecting the liquid level detection component to the control component, this application can monitor the changes in the liquid level in the brine tank in real time, thereby accurately monitoring the water injection and brine suction process. This not only allows for determining whether the water softener is suctioning or injecting brine normally, but also significantly improves the cleaning and regeneration efficiency and quality of the resin tank. Furthermore, it can promptly detect whether there is leakage inside the water softener, ensuring water safety.

[0028] Compared with the prior art, a water treatment system according to an embodiment of this application includes a water softener as described in any of the foregoing embodiments. It is understood that the water treatment system of this application includes all the technical features and effects of the aforementioned water softener, which will not be repeated here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of a water softener according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the structure of a liquid level detection component according to an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of an embodiment of this application.

[0033] Reference numerals: 1. Control valve; 11. Valve body; 111. Inlet; 112. Salt inlet; 113. Outlet; 12. Control component; 2. Salt inlet pipeline; 3. Salt tank; 31. Receiving cavity; 32. Bottom wall; 33. Soft water salt; 34. Inner side wall; 4. Liquid level detection component; 41. Counterweight housing; 411. Receiving cavity; 412. First opening; 413. Third opening; 42. Liquid level sensor; 43. Filter assembly; 431. Second opening; 432. Housing; 433. Filter screen; 44. Sealing ring; 45. Wire; 46. Wire harness seal; 5. Resin tank; 6. Fixing component; 7. Bidirectional flow meter. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0036] Please refer to the following: Figures 1-3An embodiment of this application provides a water softener, including a control valve 1, a brine injection pipe 2, a brine tank 3, and a level detection component 4. The control valve 1 includes a valve body 11 and a control component 12, with the control component 12 connected to the valve body 11. The valve body 11 includes an inlet 111 and a brine injection port 112, with the inlet 111 communicating with the brine injection port 112. The brine injection pipe 2 is connected to the brine injection port 112. The brine tank 3 has a receiving cavity 31, with one end of the brine injection pipe 2 extending away from the brine injection port 112 to the bottom of the brine tank 3. The level detection component 4 is disposed within the receiving cavity 31 and connected to the bottom wall 32 of the brine tank 3. The level detection component 4 is electrically connected to the control component 12.

[0037] In this embodiment, by setting a liquid level detection component 4 on the bottom wall 32 of the salt tank 3, and electrically connecting the liquid level detection component 4 to the control component 12, the changes in the liquid level in the salt tank 3 can be monitored in real time, thereby accurately monitoring the water injection and salt absorption process. This not only determines whether the water softener is absorbing salt or injecting water normally, but also significantly improves the cleaning and regeneration efficiency and quality of the resin tank 5. Furthermore, it can promptly detect whether there is any leakage inside the water softener, ensuring water safety.

[0038] Specifically, a liquid level detection component 4 is installed inside the receiving cavity 31 of the salt tank 3 and connected to the bottom wall 32, enabling real-time monitoring of changes in the liquid level within the salt tank 3. Since the liquid level detection component 4 is electrically connected to the control component 12, when water is started being added to the salt tank 3, the liquid level detection component 4 transmits the liquid level information to the control component 12. The control component 12 controls the valve body 11 of the control valve 1 accordingly based on the liquid level information detected by the liquid level detection component 4, accurately determining the connection status between the inlet 111 and the brine suction port 112, thereby precisely controlling the water injection volume. This effectively avoids over- or under-injection of water, ensuring that the salt dissolves at the appropriate water volume, maintaining the brine concentration near saturation, and guaranteeing a good regeneration effect. The brine suction pipe 2 extends to the bottom of the salt tank 3, facilitating the full absorption of the dissolved brine at the bottom of the salt tank 3. With the assistance of the liquid level detection component 4, not only can the liquid level height within the salt tank 3 be known, but the rate of liquid level descent can also be used to determine whether the brine suction process is normal. Because the water injection and brine absorption process can be precisely controlled and effectively monitored, the cleaning and regeneration efficiency and quality of the filter media in resin tank 5 can be significantly improved. A suitable brine concentration ensures that calcium and magnesium ions adsorbed on the resin are effectively replaced during cleaning of resin tank 5, restoring the resin's good water softening capacity. This avoids problems such as insufficient regeneration brine concentration or quantity due to abnormal water injection or brine absorption, leading to incomplete or over-regeneration of resin tank 5, extending the resin's lifespan, and improving the overall performance of the water softener and the quality of the softened water. Furthermore, the level detection component 4, working in conjunction with the control component 12, enables real-time monitoring of the water level in the brine tank 3, thus giving the water softener a certain degree of intelligent operation capability.

[0039] like Figure 1 As shown, in some embodiments, the receiving cavity 31 is provided with soft water salt 33, the soft water salt 33 covers the liquid level detection component 4, and one end of the salt-absorbing water injection pipeline 2 located in the receiving cavity 31 passes through the soft water salt 33.

[0040] In this embodiment, the liquid level detection component 4 determines the liquid level change based on pressure changes. The liquid level detection component 4 is connected to the bottom wall 32 of the brine tank 3, and the soft water salt 33 covers the liquid level detection component 4. When no water is added, it can detect the initial hydraulic pressure. During gradual water addition, it can gradually detect changes in the hydraulic pressure within the brine tank 3, thereby monitoring the amount of water added to the brine tank 3. Correspondingly, during brine absorption, as the brine is gradually absorbed, the liquid level gradually decreases, and the corresponding hydraulic pressure also gradually decreases. At this time, it is possible to monitor whether the brine absorption by the water softener is normal. One end of the brine absorption and water injection pipe 2, located within the receiving cavity 31, passes through the soft water salt 33. This design allows the brine absorption and water injection pipe 2 to directly contact the soft water salt 33 during operation. When the brine absorption operation begins, because the pipe is surrounded by soft water salt 33, the brine can be absorbed into the pipe more quickly. The brine suction pipe 2 is directly inserted into the soft water salt 33, so that salt from different locations in the salt tank 3 can be sucked into the pipe during the brine suction process. This ensures that the brine concentration drawn from all parts of the salt tank 3 is more uniform, which helps to avoid unstable regeneration effect caused by differences in brine concentration in the salt tank 3.

[0041] Furthermore, because the softened water salt 33 covers the liquid level detection component 4 and the salt intake pipe 2 extends deep into the salt, it ensures that the salt is dissolved and utilized as much as possible. In traditional salt tank 3 designs, salt may accumulate at the bottom, resulting in some salt being wasted due to insufficient dissolution. The water softener of this embodiment allows for more thorough contact between the salt during the salt intake process, improving salt utilization efficiency, reducing salt waste, and also reducing the frequency of users adding salt, thus enhancing the user experience.

[0042] like Figure 1 As shown, in some embodiments, the water softener includes a resin tank 5, which is disposed within the receiving cavity 31 and connected to the valve body 11. The control valve 1 and the brine injection pipeline 2 are both disposed within the receiving cavity 31. The valve body 11 includes an outlet 113, and both the inlet 111 and the outlet 113 extend outward from the outside of the brine tank 3. The resin tank 5 is capable of communicating with the inlet 111 and the outlet 113.

[0043] In this embodiment, the resin tank 5, control valve 1, and brine injection pipe 2 are all located inside the receiving cavity 31 of the brine tank 3, with only the inlet 111 and outlet 113 extending outside the brine tank 3. This ensures that any leakage from the control valve 1 and the various pipes occurs inside the brine tank 3. When no water is being injected into the brine tank 3, if the level detection component 4 detects a change in the liquid level, it can be inferred that there is a leak inside the water softener. This allows for timely detection and repair of the leak. Therefore, by placing the level detection component 4 at the bottom of the brine tank 3, this application can monitor the liquid level changes in the brine tank 3 in real time and effectively monitor whether there is a leak inside the water softener, thus improving the safety of the water softener.

[0044] It should be noted that by placing the resin tank 5, control valve 1, and brine injection pipeline 2 inside the receiving cavity 31 of the brine tank 3, a compact internal structure design for the water softener is achieved. This integrated design effectively utilizes the internal space of the brine tank 3, making the overall structure of the water softener more compact and reducing the floor space occupied by the equipment.

[0045] It should also be noted that both the inlet 111 and the outlet 113 protrude from the outside of the brine tank 3. This facilitates the connection of the inlet 111 to the main water inlet pipe and the outlet 113 to the main water outlet pipe, thus achieving the separation of the water softener inside and out. This makes it easier to identify the location of the water softener leak when it leaks.

[0046] like Figure 1 As shown, in some embodiments, the water softener further includes a fixing member 6, which is disposed in the receiving cavity 31 and connected to the inner sidewall 34 of the salt tank 3 and the resin tank 5, respectively.

[0047] In this embodiment, by setting a fixing member 6 inside the salt tank 3, the resin tank 5 is effectively fixed inside the salt tank 3, ensuring the stability of the internal structure of the water softener. Then, by using the resin tank 5 to support the control valve 1, the control valve 1 can be kept away from the softened water salt 33 and the brine, ensuring the safe and effective operation of the control valve 1.

[0048] like Figure 2 As shown, in some embodiments, the liquid level detection component 4 includes a counterweight housing 41 and a liquid level sensor 42. The counterweight housing 41 has a receiving cavity 411 and is in contact with the bottom wall 32 of the salt tank 3. The liquid level sensor 42 is placed in the receiving cavity 411 and is electrically connected to the control component 12.

[0049] In this embodiment, a liquid level sensor 42 is used to detect the liquid level in the salt tank 3. A counterweight housing 41 is used to cover the outside of the liquid level sensor 42, which can press the liquid level sensor 42 down and keep it in the position of the bottom wall 32 of the salt tank 3. In addition, the liquid level sensor 42 is placed in the receiving cavity 411 of the counterweight housing 41, which can also protect the liquid level sensor 42.

[0050] like Figure 2 As shown, in some embodiments, the counterweight housing 41 has a first opening 412, which communicates with the accommodating cavity 411; the detection end of the liquid level sensor 42 is disposed in the first opening 412, which faces the bottom wall 32; the liquid level detection assembly 4 further includes a filter assembly 43 and a sealing ring 44, the filter assembly 43 is sealed to the counterweight housing 41 and covers the first opening 412, the filter assembly 43 has a second opening 431, the second opening 431 is disposed opposite to the detection end of the liquid level sensor 42, and the side of the filter assembly 43 away from the first opening 412 is in contact with the bottom wall 32; the sealing ring 44 is spaced between the liquid level sensor 42 and the filter assembly 43, and is sealed to both the liquid level sensor 42 and the filter assembly 43 respectively, and surrounds the second opening 431.

[0051] In this embodiment, by providing a first opening 412 in the counterweight housing 41, the detection end of the liquid level sensor 42 can contact the liquid in the salt tank 3, facilitating more accurate liquid level detection and improving its accuracy. By sealing the first opening 412 with the filter assembly 43, the brine in contact with the liquid level sensor 42 can be filtered, ensuring that only brine contacts the detection end of the liquid level sensor 42 through the second opening 431 for pressure detection. This further enhances the protective performance of the liquid level detection assembly 4. Simultaneously, the use of sealing rings 44 spaced between the liquid level sensor 42 and the filter assembly 43, and surrounding the second opening 431, provides a good seal, preventing brine from entering the receiving cavity 411, thereby improving the waterproof performance of the liquid level detection assembly 4.

[0052] It should be noted that the filter assembly 43 includes a housing 432 and a filter screen 433. The housing 432 is connected to the counterweight housing 41 and covers the first opening 412. The second opening 431 is located at the end where the housing 432 is connected to the counterweight housing 41 and communicates with the first opening 412. The sealing ring 44 abuts against the liquid level sensor 42 and the housing 432. The filter screen 433 is connected to the side of the housing 432 away from the first opening 412. At this time, after the soft water salt 33 is filtered by the filter screen 433, it enters the first opening 412 through the second opening 431 and reaches the liquid level sensor 42 to realize liquid level detection, which can effectively ensure the sealing of the accommodating cavity 411.

[0053] like Figure 2 As shown, in some embodiments, the counterweight housing 41 has a third opening 413, which communicates with the accommodating cavity 411; the liquid level sensor 42 is connected to the control component 12 via a wire 45, which passes through the third opening 413; the liquid level detection component 4 further includes a wire harness seal 46, which is sleeved on the outside of the wire 45 and embedded in the third opening 413, and is sealed to the wire 45 and the counterweight housing 41 respectively.

[0054] In this embodiment, the liquid level sensor 42 and the control component 12 are connected by a wire 45 to achieve stable signal transmission, thereby ensuring the accuracy of liquid level detection. By setting a wire harness seal 46, the third opening 413 can be sealed while the wire 45 is led out, preventing brine from entering the receiving cavity 411, thereby protecting the liquid level sensor 42.

[0055] It should be noted that, in this embodiment of the application, a shielding layer is provided inside the conductor 45, which can prevent interference from external high-power electrical appliances and achieve stable signal transmission.

[0056] like Figure 1 and Figure 3 As shown, in some embodiments, the water softener further includes a bidirectional flow meter 7, which is disposed on the brine injection pipeline 2 and electrically connected to the control component 12.

[0057] In this embodiment, a bidirectional flow meter 7 is installed on the brine suction and water injection pipeline 2, which can monitor the flow rate of the liquid in the brine suction and water injection pipeline 2 in real time. The bidirectional flow meter 7 can detect the flow rate in different directions within the brine suction and water injection pipeline 2. Whether injecting water into the brine tank 3 or sucking salt from the brine tank 3, it can accurately obtain flow data, enabling monitoring of the flow rate of water injection or salt suction. This allows for more accurate detection of the flow rate of salt suction and water injection, ensuring the amount of water injected and salt sucked, thereby guaranteeing the regeneration effect.

[0058] The water softener in this embodiment uses a pressure sensor as the level sensor 42. Its working principle is to determine the liquid level in the brine tank 3 by detecting the water pressure inside the brine tank 3. Since the water pressure depends on the water density, gravitational acceleration, and water depth, and the liquid pressure is the same at the same depth in a static state, using a pressure sensor as the level sensor 42 has the advantages of high accuracy, sensitive response, and real-time reaction to changes in liquid level. The level sensor 42 is installed on the bottom wall 32 of the brine tank 3 of the water softener to detect the liquid level in the brine tank 3. By detecting the change in liquid level before and after the water softener absorbs salt or injects water, it analyzes whether a height difference occurs, thereby determining whether the water softener is absorbing salt or injecting water normally. This method effectively avoids the situation where the height calculated by the level sensor 42 differs from the actual water level due to differences in the water hardness required in different regions and the density of the brine after dissolving salt, even at the same water injection level.

[0059] When the water softener is in normal working condition, no water flows through the brine injection pipe 2, and the liquid level in the brine tank 3 does not change. When an abnormal rise or change in the liquid level occurs, the liquid level detection component 4 outputs a signal, and when the bidirectional flow meter 7 does not output a pulse signal to the control board, it is determined that there is a leak in the internal pipeline of the water softener. At this time, the control component 12 drives the valve body 11 to the closed position and sends an alarm message to the user, effectively avoiding property damage.

[0060] When the water softener is in the water filling state, water flows through the brine injection pipe 2. At this time, the bidirectional flow meter 7 sends a pulse signal to the control valve 1, causing the liquid level in the brine tank 3 to rise. The liquid level detection component 4 continuously detects the liquid level height and outputs a signal value to the control component 12. When the control component 12 detects that the number of pulses from the bidirectional flow meter 7 has reached the set value, the control valve 1 stops water filling. The control component 12 analyzes the signal value given by the liquid level detection component 4 to determine the change in water level, thereby judging whether the water filling is normal. If the water filling is abnormal, it indicates that there is a leak.

[0061] When the water softener is in brine extraction mode, water flows through the brine extraction and injection pipe 2. At this time, the bidirectional flow meter 7 sends a pulse signal to the control valve 1, causing the liquid level in the brine tank 3 to drop. The liquid level detection component 4 continuously monitors the liquid level height and outputs a signal value to the control component 12. When the control component 12 detects that the number of pulses from the bidirectional flow meter 7 has reached the set value, the control valve 1 stops extracting brine. The control component 12 analyzes the signal value given by the liquid level detection component 4 to determine the change in brine extraction height, thereby judging whether the brine extraction is normal. If the brine extraction is abnormal, it indicates a leak.

[0062] Accordingly, the water treatment system described in this application includes a water softener as described in any of the foregoing embodiments.

[0063] It is understood that the water treatment system of this application embodiment includes all the technical features and effects of the aforementioned water softener, and will not be repeated here.

[0064] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0065] The above provides a detailed description of a water softener and water treatment system provided in the embodiments of this application, and uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A water softener, characterized in that, include: The control valve (1) includes a valve body (11) and a control component (12). The control component (12) is connected to the valve body (11). The valve body (11) includes an inlet (111) and a brine inlet (112). The inlet (111) can communicate with the brine inlet (112). A brine suction and water injection pipeline (2) is connected to the brine suction and water injection port (112); The salt tank (3) has a receiving cavity (31), and the salt-absorbing water injection pipe (2) extends from one end away from the salt-absorbing water injection port (112) to the bottom of the salt tank (3); A liquid level detection component (4) is disposed in the receiving cavity (31) and connected to the bottom wall (32) of the salt tank (3); the liquid level detection component (4) is electrically connected to the control component (12).

2. The water softener according to claim 1, characterized in that, The receiving cavity (31) is provided with soft water salt (33), which covers the liquid level detection component (4). One end of the salt-absorbing water injection pipeline (2) located in the receiving cavity (31) passes through the soft water salt (33).

3. The water softener according to claim 1, characterized in that, The water softener includes a resin tank (5), which is located in the receiving cavity (31) and connected to the valve body (11). The control valve (1) and the brine injection pipeline (2) are both located in the receiving cavity (31). The valve body (11) includes an outlet (113), and the inlet (111) and the outlet (113) both extend out of the outside of the brine tank (3). The resin tank (5) can communicate with the inlet (111) and the outlet (113).

4. The water softener according to claim 3, characterized in that, The water softener also includes a fixing component (6), which is disposed in the receiving cavity (31) and connected to the inner wall (34) of the salt tank (3) and the resin tank (5) respectively.

5. The water softener according to claim 1, characterized in that, The liquid level detection component (4) includes: The counterweight housing (41) has a receiving cavity (411) and is in contact with the bottom wall (32) of the salt tank (3); A liquid level sensor (42) is disposed in the accommodating cavity (411) and electrically connected to the control component (12).

6. The water softener according to claim 5, characterized in that, The counterweight housing (41) has a first opening (412), which is connected to the accommodating cavity (411); the detection end of the liquid level sensor (42) is disposed in the first opening (412), which faces the bottom wall (32); The liquid level detection component (4) also includes: The filter assembly (43) is sealed to the counterweight housing (41) and covers the first opening (412). The filter assembly (43) has a second opening (431). The second opening (431) is disposed opposite to the detection end of the liquid level sensor (42). The side of the filter assembly (43) away from the first opening (412) is in contact with the bottom wall (32). A sealing ring (44) is spaced between the liquid level sensor (42) and the filter assembly (43), and is sealed to the liquid level sensor (42) and the filter assembly (43) respectively. The sealing ring (44) surrounds the second opening (431).

7. The water softener according to claim 6, characterized in that, The counterweight housing (41) has a third opening (413), which communicates with the accommodating cavity (411); The liquid level sensor (42) is connected to the control component (12) via a wire (45), and the wire (45) passes through the third opening (413); The liquid level detection component (4) further includes a wire harness seal (46), which is sleeved on the outside of the wire (45) and embedded in the third opening (413). The wire harness seal (46) is sealed to the wire (45) and the counterweight housing (41) respectively.

8. The water softener according to claim 5, characterized in that, The liquid level sensor (42) is a pressure sensor.

9. The water softener according to claim 3, characterized in that, The water softener also includes a bidirectional flow meter (7), which is installed on the brine injection pipeline (2) and electrically connected to the control component (12).

10. A water treatment system, characterized in that, This includes the water softener as described in any one of claims 1-9.

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