Brine tank

Abstract

The embodiment of the utility model discloses a brine tank which comprises a tank body, a salt feeding device, a stirring device, a water supplementing device and a control device, the brine tank is connected with a salt mist tank through a first valve, the water supplementing device communicates with the tank body through a second valve, the stirring device is arranged in the tank body, and the salt feeding device communicates with the tank body; the first valve and the second valve are electrically connected with the control device respectively; the control device is electrically connected with the salt feeding device, and the stirring device is electrically connected with the control device; a floating device for triggering signals and at least one signal sending device matched with the floating device are arranged in the box body, the floating device floats on the liquid level in the box body, and the signal sending device is electrically connected with the control device. The salt water amount condition in the salt water tank is indicated through the position of the floating device, and opening and closing of the first valve and the second valve are controlled according to the signals, so that water is flexibly supplemented according to the salt water amount condition, salt mist supply continuity is guaranteed, and salt mist experiment stability and experiment result accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of salt spray boxes, and particularly relates to a brine tank. Background Art

[0002] Salt spray tests are required to use a salt spray box to corrode the product to be tested in order to test the corrosion resistance of the product to be tested. The maximum operating cycle of the existing salt spray box depends on the volume of the brine tank and the release rate of the salt spray. Generally, the volume of the brine tank equipped for salt spray experiments is 100-200L, and the continuous use time generally does not exceed 7 days.

[0003] Since salt spray tests need to ensure that the product to be tested is in a salt spray environment with a certain concentration for a long time, in order to ensure the stability of the salt spray environment, the brine tank needs to continuously supply brine to the salt spray box. However, the traditional brine supply is manual addition of brine, which is troublesome in form, cumbersome in steps, low in efficiency, high in cost, and highly dependent on manpower. If the salt spray box cannot work continuously due to the uncontrollable degree of manpower, it will affect the accuracy of the salt spray experiment.

[0004] Therefore, there is an urgent need for a brine tank that is convenient for adding water and has a low dependence on manpower. Summary of the Utility Model

[0005] The present application aims to solve the technical problems of inconvenient water addition to the brine tank and high dependence on manpower. To solve this technical problem, the technical solutions provided by the present application are as follows:

[0006] On the one hand, the present application provides a brine tank, which includes a tank body, a salt feeding device, a stirring device, a water replenishing device, and a control device. The brine tank is connected to the salt spray box through a first valve. The water replenishing device is communicated with the tank body through a second valve. The stirring device is arranged inside the tank body, and the salt feeding device is communicated with the tank body;

[0007] The first valve and the second valve are respectively electrically connected to the control device; the control device is electrically connected to the salt feeding device, and the stirring device is electrically connected to the control device;

[0008] A floating device for triggering a signal and at least one signal sending device cooperating with the floating device are arranged inside the tank body. The floating device floats on the liquid surface inside the tank body, and the signal sending device is electrically connected to the control device.

[0009] In some possible implementation manners, a hollowing device is arranged inside the brine tank. The hollowing device is fixedly arranged at the bottom inside the tank body, and the floating device is placed inside the hollowing device.

[0010] In some possible embodiments, the at least one signal transmitting device includes a first signal transmitting device and a second signal transmitting device. The first signal transmitting device is disposed at the top inside the hollowing device, and the second signal transmitting device is disposed at the bottom of the hollowing device.

[0011] In some possible embodiments, the control device includes a signal receiving module and a water replenishing device control module. The signal receiving module is electrically connected to the water replenishing device control module, and the first signal transmitting device and the second signal transmitting device are respectively electrically connected to the signal receiving module.

[0012] In some possible embodiments, the distance between the first signal transmitting device and the inner bottom of the box is equal to the target water level height value of the brine tank.

[0013] In some possible embodiments, the control device further includes a stirring switch control module. The stirring switch control module is respectively electrically connected to the stirring device and the signal receiving module.

[0014] In some possible embodiments, the control device further includes a time recording module and a time signal transmitting module that are electrically connected to each other. The time signal transmitting module is electrically connected to the stirring switch control module.

[0015] In some possible embodiments, the control device further includes a salt adding control module. The signal receiving module and the salt adding device are respectively electrically connected to the salt adding control module.

[0016] In some possible embodiments, the control device further includes a second valve control module. The second valve control module is electrically connected to the second valve. The second signal transmitting module is electrically connected to the signal receiving module, and the second valve control module is electrically connected to the signal receiving module.

[0017] In some possible embodiments, the salt adding device includes a third valve and a salt storage device. The third valve is in communication with the salt storage device, and the third valve is electrically connected to the control device.

[0018] The present utility model has the following beneficial effects:

[0019] In the embodiment of the present utility model, a floating device with a trigger signal and a signal sending device are arranged in the brine tank. The position of the floating device changes with the change of the brine level, thereby indicating the amount of brine in the brine tank. The floating device contacts the signal sending device to trigger a signal, and the control device controls the opening and closing of the first valve and the second valve according to the signal of the signal sending device, so as to realize the flexible water replenishment of the brine tank according to the amount of brine, overcome the dependence on manpower in the traditional brine adding method, improve the flexibility of adding water to the brine tank, ensure the continuity of the brine supply in the salt spray tank, and improve the stability of the salt spray experiment process and the accuracy of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the internal structure of the brine tank proposed in the embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the connection structure between the brine tank and the salt spray tank proposed in the embodiment of the present utility model Figure 1 ;

[0023] Figure 3 It is a schematic diagram of the connection structure between the brine tank and the salt spray tank proposed in the embodiment of the present utility model Figure 2 ;

[0024] The following is a supplementary description of the drawings:

[0025] 10 - Brine tank; 101 - Box body; 102 - Salt feeding device; 103 - Stirring device; 104 - First valve; 105 - Second valve;

[0026] 110 - Floating device; 111 - Hollowing device; 112 - First signal sending device; 113 - Second signal sending device; 1021 - Salt storage device; 1022 - Third valve;

[0027] 20 - Salt spray tank. DETAILED IMPLEMENTATION MANNER

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0029] As used herein, the term "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0030] When a numerical range is disclosed herein, the above range is considered continuous and includes the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when the range refers to integers, it includes each integer between the minimum and maximum values of the range. In addition, when multiple ranges are provided to describe features or characteristics, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all sub-ranges subsumed therein. For example, the specified range from "1 to 10" should be considered to include any and all sub-ranges between the minimum value 1 and the maximum value 10. Exemplary sub-ranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0031] Salt spray test is an environmental test that mainly uses the artificial simulated salt spray environment conditions created by salt spray test equipment to evaluate the corrosion resistance of products or metal materials. One experimental method is the artificial simulated salt spray environment experiment. This experimental method uses a salt spray chamber to generate salt spray, places the product to be tested in the salt spray chamber, makes the product to be tested in the salt spray environment during the experimental period, accelerates the simulation of the corrosion situation of the product during actual use, and tests the quality of the salt spray corrosion resistance of the product.

[0032] For existing salt spray chambers, the water addition method is traditional and highly dependent on manual labor, and it is impossible to add water in a timely manner, resulting in an inconsistent salt spray test process and affecting the accuracy of the salt spray test.

[0033] Based on this, the present application provides a brine tank that can automatically replenish water without waiting for manual water addition, overcoming the dependence on manual labor.

[0034] Please refer to Figure 1 、 Figure 2 、 Figure 3 , as shown in the figure, on the one hand, the present application provides a brine tank 10, the brine tank 10 includes a tank body 101, a salt feeding device 102, a stirring device 103, a water replenishing device, and a control device. The brine tank 10 is connected to a salt spray chamber 20 through a first valve 104. The water replenishing device is communicated with the tank body 101 through a second valve 105. The stirring device 103 is arranged inside the tank body 101, and the salt feeding device 102 is communicated with the tank body 101;

[0035] The first valve 104 and the second valve 105 are respectively electrically connected to the control device; the control device is electrically connected to the salt feeding device 102, and the stirring device 103 is electrically connected to the control device;

[0036] A floating device 110 for triggering a signal and at least one signal sending device cooperating with the floating device 110 are arranged inside the tank body 101. The floating device 110 floats on the liquid surface inside the tank body 101, and the signal sending device is electrically connected to the control device.

[0037] Optionally, the salt feeding device 102 is a device for feeding salt into the brine tank 10, the stirring device 103 is a device for fully dissolving and mixing the water and salt in the brine tank 10, the water replenishing device is a device for injecting water into the brine tank 10, and the control device is a device for controlling the electrical connection and communication between each component, for example, a main control board. The control device controls each component of the brine tank 10 according to the received signal.

[0038] Please continue to refer to Figure 1 , optionally, the first valve 104 is a switching device for the channel between the brine tank 10 and the salt spray chamber 20. The water replenishing device includes a water tank, a water pipe, etc. The second valve 105 is a switching device for the channel between the water replenishing device and the tank body 101 (the water replenishing device is not fully shown in the figure).

[0039] Further, the signal sending device and the floating device 110 are in a cooperative use relationship. The floating device 110 is a device with a certain weight. Optionally, the signal sending device is a pressure switch. The floating device 110 touches the signal sending device to send a signal by applying pressure to the signal sending device.

[0040] In the embodiment of the present utility model, a floating device with a trigger signal and a signal sending device are arranged in the brine tank. The position of the floating device changes with the change of the brine level, thereby indicating the brine volume condition in the brine tank. The floating device contacts the signal sending device to trigger a signal. The control device controls the opening and closing of the first valve and the second valve according to the signal of the signal sending device, so as to realize the flexible water replenishment of the brine tank according to the brine volume situation, overcome the dependence on manpower in the traditional brine adding method, improve the flexibility of adding water to the brine tank, ensure the continuity of the brine supply in the salt spray tank, and improve the stability of the salt spray experiment process and the accuracy of the experimental results.

[0041] In some possible embodiments, a hollowing device 111 is arranged in the brine tank 10. The hollowing device 111 is fixedly arranged at the bottom inside the box body 101, and the floating device 110 is placed inside the hollowing device 111.

[0042] Please continue to refer to Figure 1 , as Figure 1 shown, a plurality of through holes are arranged on the outer surface of the hollowing device 111, so that the brine enters the hollowing device 111 from the inside of the box body 101 of the brine tank 10, and the liquid level height inside the hollowing device 111 is the same as the liquid level height inside the box body 101 of the brine tank 10.

[0043] Further, the floating device 110 is placed inside the hollowing device 111. The overall size of the floating device 110 is equal to or larger than the size of the through holes on the surface of the hollowing device 111, ensuring that the floating device 110 will not leak out of the hollowing device 111. In addition, a top cover structure is arranged at the top of the hollowing device 111 to further limit the floating device 110 in the hollowing device 111.

[0044] In the embodiment of the present utility model, through the mutual cooperation of the hollowing device and the floating device, the floating range of the floating device can be limited, avoiding the obstruction of the water flow when the brine tank transports brine to the salt spray tank, and ensuring the smoothness of the transported brine.

[0045] In some possible embodiments, the at least one signal sending device includes a first signal sending device 112 and a second signal sending device 113. The first signal sending device 112 is arranged at the top inside the hollowing device 111, and the second signal sending device 113 is arranged at the bottom of the hollowing device 111.

[0046] Please continue to refer toFigure 1 , as Figure 1 shown, optionally, a first signal transmitting device 112 and a second signal transmitting device 113 are respectively arranged at the top and bottom of the hollowing device 111. The first signal transmitting device 112 and the second signal transmitting device 113 are respectively used to represent the full water state and the water shortage state in the brine tank 10. The first signal transmitted by the first signal transmitting device 112 indicates that the brine tank 10 is in the full water state and there is no need to add water; the second signal transmitted by the second signal transmitting device 113 indicates that the brine tank 10 is in the water shortage state and water needs to be added.

[0047] Furthermore, since the floating device 110 floats on the surface of the brine liquid level, the position of the floating device 110 changes with the height of the brine liquid level. When the brine tank 10 is in the water shortage state, the floating device 110 falls to the bottom of the hollowing device 111 and contacts the second signal transmitting device 113, and the second signal transmitting device 113 is triggered to send a water shortage signal by virtue of the gravity of the floating device 110 itself; when the brine tank 10 is in the full water state, the floating device 110 rises to the top of the hollowing device 111 and contacts the first signal transmitting device 112, and the resultant force of the buoyancy and gravity of the brine on the floating device 110 triggers the first signal transmitting device 112 to send a signal.

[0048] In the embodiment of the present utility model, by arranging signal transmitting devices at different positions of the hollowing device, the brine tank can judge the water shortage state and the full water state of the brine tank according to the water level height in the tank body, so as to trigger the signal transmitting devices at the corresponding positions to send corresponding signals, thereby controlling the water addition or stopping of the water addition of the brine tank, realizing the self-regulation of the water addition of the brine tank, ensuring the continuity of the salt mist supply, and ensuring the stability of the salt mist test and the reliability of the results.

[0049] In some possible embodiments, the control device includes a signal receiving module and a water replenishing device control module. The signal receiving module is electrically connected to the water replenishing device control module, and the first signal transmitting device 112 and the second signal transmitting device 113 are respectively electrically connected to the signal receiving module.

[0050] Optionally, the signal receiving module is used to receive the first signal and the second signal transmitted by the first signal transmitting device 112 and the second signal transmitting device 113. The water replenishing device control module is used to control the operation and shutdown of the water replenishing device. The signal receiving module sends the received signal to the water replenishing device control module, and then the water replenishing device module judges the control mode of the water replenishing device according to the signal. Exemplarily, when the first signal corresponds to the brine liquid level in the tank body 101 of the brine tank 10 reaching the first signal transmitting device 112, the water addition can be stopped, and the water replenishing device control module can control the water replenishing device to shut down.

[0051] In the embodiment of the present utility model, the first signal sending device 112 and the second signal sending device 113 are connected to the signal receiving module, and then the corresponding signals are sent to the water replenishing device control module through the signal receiving module, so as to realize information interaction between different devices, improve the accuracy of controlling the start and stop of water replenishment in the brine tank 10, and improve the stability and continuity of the brine mist supplied by the brine tank 10.

[0052] Please continue to refer to Figure 1 , such as Figure 1 shown, in some possible embodiments, the distance between the first signal sending device 112 and the inner bottom of the box body 101 is equal to the target water level height value of the brine tank 10.

[0053] Optionally, the distance between the first signal sending device 112 and the inner bottom of the box body 101 refers to the length of the perpendicular line segment obtained by drawing a perpendicular line from the position where the first signal sending device 112 is located to the bottom surface of the box body 101. It should be noted that the target water level height value in the brine tank 10 can be determined according to the capacity of the brine tank 10. The target water level height value refers to the water level where the brine liquid surface is located when the brine tank 10 is in a full water state, and it is the water level height to which the brine tank 10 needs to be replenished with water. Optionally, the first signal sending device 112 is arranged at the top of the hollowing device 111. Therefore, the distance between the first signal sending device 112 and the bottom of the box body 101 is equal to the height of the hollowing device 111 (the height of the hollowing device 111 is the side length perpendicular to the bottom of the box body 101).

[0054] Furthermore, the height of the hollowing device 111 can be set to the target water level height value in the brine tank 10. Then, when the first signal sending device 112 is triggered by the floating device 110, it can be known that the liquid level in the brine tank 10 has risen to the target water level, and at this time, the water replenishing device is controlled to close.

[0055] In the embodiment of the present utility model, by setting the height of the hollowing device to the target water level height value of the brine tank and combining the first signal sending device arranged at the top of the hollowing device, when the water level reaches the target water level height value, it can accurately send the first signal that the brine tank has reached the full water state, improve the accuracy of controlling the closing of the water replenishing device, improve the accuracy of controlling the water volume and water level in the brine tank, and according to the capacities of different brine tanks, by using hollowing devices with different heights, it is possible to continue to apply the signal sending device and the floating device to control the water volume of the brine tank, thereby improving the flexibility of the technical solution for replenishing water to the brine tank.

[0056] In some possible embodiments, the control device further includes a stirring switch control module, and the stirring switch control module is electrically connected to the stirring device 103 and the signal receiving module respectively.

[0057] Optionally, the stirring switch control module is used to control the operation and shutdown of the stirring device 103. The signal receiving module sends the received signal to the stirring switch control module. Exemplarily, when the signal is the first signal and the water addition is completed, the stirring switch control module controls the stirring device 103 to start stirring.

[0058] In some possible embodiments, the control device further includes a time recording module and a time signal sending module that are electrically connected to each other, and the time signal sending module is electrically connected to the stirring switch control module.

[0059] Optionally, the time recording module is used to record the operation time of the stirring device 103. After the operation time of the stirring device 103 is recorded, the time signal sending module generates a time signal and sends the time signal to the stirring switch control module.

[0060] Furthermore, a stirring time can be set for the stirring device 103, such as 10 minutes, 15 minutes, 20 minutes, etc. If the operation time of the stirring device 103 corresponding to the time signal reaches the stirring time, the stirring switch control module controls the stirring device 103 to stop stirring.

[0061] In the embodiment of the present utility model, by setting a stirring time for the stirring device, recording the actual operation time of the stirring device, comparing them, and controlling the shutdown of the stirring device, the salt dissolution efficiency of the salt water tank is improved, the salt in the salt water is ensured to be fully dissolved, the uniformity of the salt water is improved, and the reliability of the salt spray test result is ensured.

[0062] In some possible embodiments, the control device further includes a salt feeding control module, and the signal receiving module and the salt feeding device 102 are respectively electrically connected to the salt feeding control module.

[0063] Optionally, the salt feeding control module is used to control the salt feeding or stop the salt feeding of the salt feeding device 102. After the signal receiving module receives the first signal, the salt feeding control module controls the salt feeding device 102 to start the salt feeding process.

[0064] In some possible embodiments, the control device further includes a second valve 105 control module. The second valve 105 control module is electrically connected to the second valve 105, the second signal sending module is electrically connected to the signal receiving module, and the second valve control module is electrically connected to the signal receiving module.

[0065] Optionally, the second valve 105 control module is used to control the opening and closing of the second valve 105, and the first valve 104 control module is used to control the opening and closing of the first valve 104.

[0066] Further, when the signal received by the signal receiving module is the first signal, i.e., the brine tank 10 is full of water, the first valve 104 and the second valve 105 are both closed for stirring. When the signal received by the signal receiving module is the second signal, i.e., the brine tank 10 is short of water, the first valve 104 is controlled to close to prevent the salt spray tank 20 from idling, and at the same time, the second valve 105 is opened to control the water replenishing device to replenish water.

[0067] Please continue to refer to Figure 2 、 3 , as shown in the figure, in some possible embodiments, the salt feeding device 102 includes a third valve 1022 and a salt storage device 1021. The third valve 1022 is communicated with the salt storage device 1021, and the third valve 1022 is electrically connected to the control device.

[0068] Optionally, the third valve 1022 is a discharge outlet for discharging salt through the salt storage device 1021. Exemplarily, the salt storage device 1021 can be a powder and granule solid feeder, and the salt discharge amount can be controlled by setting the discharge rate and the total discharge time.

[0069] Implementing the present utility model has the following beneficial effects:

[0070] 1. In the embodiment of the present utility model, by providing a floating device with a trigger signal and a signal sending device in the brine tank, the position of the floating device changes with the change of the brine level, thereby indicating the brine amount condition in the brine tank. The floating device contacts the signal sending device to trigger a signal, and the control device controls the opening and closing of the first valve and the second valve according to the signal of the signal sending device, so as to realize the flexible water replenishment of the brine tank according to the brine amount situation, overcome the dependence on manpower in the traditional brine adding method, improve the flexibility of adding water to the brine tank, ensure the continuity of salt spray supply in the salt spray tank, and improve the stability of the salt spray experiment process and the accuracy of the experimental results.

[0071] 2. In the embodiment of the present utility model, through the mutual cooperation of the hollowing device and the floating device, the floating range of the floating device can be limited, avoiding the obstruction of the water flow when the brine tank conveys brine to the salt spray tank, and ensuring the smoothness of the conveyed brine.

[0072] 3. In the embodiment of the present utility model, by providing signal sending devices at different positions of the hollowing device, the brine tank can judge the water shortage state and full water state of the brine tank according to the water level in the tank body, and thus send corresponding signals by triggering the signal sending devices at the corresponding positions to control the water addition or stop of the brine tank, realizing the self-regulation of the water addition of the brine tank, ensuring the continuity of salt spray supply, and ensuring the stability of the salt spray test and the reliability of the results.

[0073] 4. In the embodiment of the present utility model, by connecting the first signal sending device and the second signal sending device to the signal receiving module, and then sending the corresponding signals to the water replenishing device control module through the signal receiving module, the information interaction between different devices is realized, the accuracy of controlling the water replenishment start and stop of the brine tank is improved, and the stability and continuity of the salt mist supply of the brine tank are improved.

[0074] 5. In the embodiment of the present utility model, by setting the height of the hollowing device to the target water level height value of the brine tank, combined with the first signal sending device arranged at the top of the hollowing device, when the water level reaches the target water level height value, the first signal indicating that the brine tank has reached the full water state can be accurately sent, the accuracy of controlling the closing of the water replenishing device is improved, the accuracy of controlling the water volume and water level in the brine tank is improved, and according to the capacities of different brine tanks, hollowing devices with different heights are adopted, and the signal sending device and the floating device can continue to be used for controlling the water volume of the brine tank, which improves the flexibility of the water replenishment technical solution of the brine tank.

[0075] 6. In the embodiment of the present utility model, by setting the stirring time of the stirring device and recording the actual running time of the stirring device and comparing them, the closing of the stirring device is controlled, the salt dissolution efficiency of the brine tank is improved, the full dissolution of the salt is ensured, the uniformity of the brine is improved, and the reliability of the salt mist experiment result is ensured.

[0076] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A brine tank, characterized in that, The brine tank (10) includes a tank body (101), a salt feeding device (102), a stirring device (103), a water replenishing device, and a control device. The brine tank (10) is connected to the salt spray tank (20) through a first valve (104). The water replenishing device is communicated with the tank body (101) through a second valve (105). The stirring device (103) is arranged inside the tank body (101), and the salt feeding device (102) is communicated with the tank body (101). The first valve (104) and the second valve (105) are respectively electrically connected to the control device. The control device is electrically connected to the salt feeding device (102), and the stirring device (103) is electrically connected to the control device. A floating device (110) for triggering a signal and at least one signal sending device cooperating with the floating device (110) are arranged inside the tank body (101). The floating device (110) floats on the liquid surface inside the tank body (101), and the signal sending device is electrically connected to the control device.

2. The brine tank according to claim 1, characterized in that, A hollowing device (111) is arranged inside the brine tank (10). The hollowing device (111) is fixedly arranged at the bottom inside the tank body (101), and the floating device (110) is placed inside the hollowing device (111).

3. The brine tank according to claim 2, wherein, The at least one signal sending device includes a first signal sending device (112) and a second signal sending device (113). The first signal sending device (112) is arranged at the top inside the hollowing device (111), and the second signal sending device (113) is arranged at the bottom of the hollowing device (111).

4. The brine tank according to claim 3, wherein, The control device includes a signal receiving module and a water replenishing device control module. The signal receiving module is electrically connected to the water replenishing device control module. The first signal sending device (112) and the second signal sending device (113) are respectively electrically connected to the signal receiving module.

5. The brine tank according to claim 3, characterized in that, The distance between the first signal sending device (112) and the bottom inside the tank body (101) is equal to the target water level height value of the brine tank.

6. The brine tank according to claim 4, characterized in that, The control device further includes a stirring switch control module. The stirring switch control module is respectively electrically connected to the stirring device (103) and the signal receiving module.

7. The brine tank according to claim 6, characterized in that, The control device further includes a time recording module and a time signal sending module which are electrically connected to each other. The time signal sending module is electrically connected to the stirring switch control module.

8. The brine tank according to claim 4, characterized in that, The control device further includes a salt feeding control module. The signal receiving module and the salt feeding device (102) are respectively electrically connected to the salt feeding control module.

9. The brine tank according to claim 4, characterized in that, The control device further includes a second valve control module. The second valve control module is electrically connected to the second valve (105). The second signal sending device is electrically connected to the signal receiving module, and the second valve control module is electrically connected to the signal receiving module.

10. The brine tank according to claim 8 or 9, characterized in that, The salt feeding device (102) includes a third valve (1022) and a salt storage device (1021). The third valve (1022) is in communication with the salt storage device (1021), and the third valve (1022) is electrically connected to the control device.

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