Metal salt recycling system

Abstract

The utility model relates to a metal salt recycling system which comprises an electroplating bath and a first-stage rinsing bath, the electroplating bath is communicated with a management bath, the first-stage rinsing bath is communicated with a countercurrent rinsing bath, the first-stage rinsing bath is connected with a metal salt filtering device through a pipeline, and the metal salt filtering device is connected with the countercurrent rinsing bath and the management bath through pipelines. Atomization volatilization equipment is arranged on the management groove; a workpiece sequentially passes through the primary rinsing bath and the countercurrent rinsing bath to be cleaned after passing through the electroplating bath, wastewater in the primary rinsing bath is introduced into the metal salt filtering device, a metal salt solution and pure water are separated out by the metal salt filtering device, the pure water is introduced into the countercurrent rinsing bath, and the metal salt solution is introduced into the management bath. The metal salt solution in the management tank enters the electroplating tank after being concentrated by atomization volatilization equipment; according to the system, wastewater generated by workpiece cleaning is guided into the metal salt filtering device in real time, a separated metal salt solution is concentrated and then put back for use, separated pure water is put into the countercurrent washing tank, and instant treatment and recycling and zero-emission cyclic utilization of the wastewater are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical production especially relates to a metal salt recycling system. BACKGROUND

[0002] Metal salt plays an important role in the field of chemical industry, and is widely used in catalysts, additives, pigments, preservatives, electrochemical processes and many other aspects. For example, in the field of copper-nickel electroplating, copper-nickel metal salt ions play a crucial role. After workpiece electroplating, it needs to be cleaned by water washing. The wastewater from cleaning the workpiece is usually collected and treated to recover the metal salt ions. This process is time-consuming and has high transportation costs. Currently, there is no effective and efficient system for recycling wastewater while using it. SUMMARY

[0003] To overcome the above problems, the utility model provides a metal salt recycling system, and the utility model solves technical problems thereof by adopting the technical scheme of:

[0004] A metal salt recycling system, comprising an electroplating tank and a first water washing tank, the electroplating tank being connected to a management tank, the first water washing tank being connected to a countercurrent water washing tank, the first water washing tank being connected to a metal salt filtering device through a pipeline, the metal salt filtering device being connected to the countercurrent water washing tank and the management tank through a pipeline, and an atomization and volatilization device being arranged on the management tank; the workpiece passes through the first water washing tank and the countercurrent water washing tank in sequence after passing through the electroplating tank, the wastewater in the first water washing tank is introduced into the metal salt filtering device, the metal salt filtering device separates metal salt solution and pure water, the pure water is introduced into the countercurrent water washing tank, and the metal salt solution is introduced into the management tank, and the metal salt solution in the management tank is concentrated by the atomization and volatilization device and then introduced into the electroplating tank.

[0005] Further, the countercurrent water washing tank comprises a first countercurrent tank and a second countercurrent tank, the first countercurrent tank is connected to the first water washing tank, and the second countercurrent tank is connected to the first countercurrent tank; the workpiece passes through the first water washing tank, the first countercurrent tank and the second countercurrent tank in sequence for cleaning; the pure water separated by the metal salt filtering device is introduced into the second countercurrent tank through a pipeline, the water in the second countercurrent tank flows countercurrently into the first countercurrent tank, and the water in the first countercurrent tank flows countercurrently into the first water washing tank.

[0006] Further, pure water is additionally added to the second countercurrent tank, the water in the second countercurrent tank overflows into the first countercurrent tank when the second countercurrent tank is full, and the water in the first countercurrent tank overflows into the first water washing tank when the first countercurrent tank is full, so that all the wastewater after cleaning the workpiece is introduced into the metal salt filtering device through the first water washing tank.

[0007] Further, the management tank introduces the metal salt solution into the atomization and volatilization device through a pipeline, and the atomization and volatilization device introduces the atomized and concentrated metal salt solution into the electroplating tank / management tank through a pipeline.

[0008] Further, the metal salt filtering device comprises a first liquid storage tank, a first-stage water washing tank is connected with the first liquid storage tank through a pipeline, the first liquid storage tank is connected with a first-stage filtering mechanism through a pipeline, the first-stage filtering mechanism is connected with a second liquid storage tank through a pipeline, the second liquid storage tank is connected with a second-stage filtering mechanism through a pipeline, and the second-stage filtering mechanism is connected with a countercurrent water washing tank through a pipeline; the first liquid storage tank is connected with a management tank through a reflux pipeline, the first-stage filtering mechanism is connected with the first liquid storage tank through a reflux pipeline, the second-stage filtering mechanism is connected with the second liquid storage tank through a reflux pipeline, and the second liquid storage tank is connected with the first liquid storage tank through a reflux pipeline; waste water is introduced into the first liquid storage tank from the first-stage water washing tank, waste water in the first liquid storage tank is introduced into the first-stage filtering mechanism, the first-stage filtering mechanism separates the waste water into a first-stage metal salt solution and filtered water, the first-stage metal salt solution is guided back to the first liquid storage tank, the filtered water is introduced into the second liquid storage tank, filtered water in the second liquid storage tank is introduced into the second-stage filtering mechanism, the second-stage filtering mechanism separates the filtered water into a second-stage metal salt solution and pure water, the second-stage metal salt solution is guided back to the second liquid storage tank, and the pure water is introduced into the countercurrent water washing tank; when the concentration of the solution in the second liquid storage tank reaches a second-stage set concentration, the solution in the second liquid storage tank is guided back to the first liquid storage tank, when the metal salt solution in the first liquid storage tank reaches a first-stage set concentration, the solution in the first liquid storage tank is guided back to the management tank, and the first-stage set concentration is greater than the second-stage set concentration.

[0009] Further, the first liquid storage tank and the first-stage water washing tank are provided with an impurity filtering device to filter solid impurities in the waste water introduced into the first liquid storage tank from the first-stage water washing tank.

[0010] Further, the first liquid storage tank and the first-stage water washing tank are provided with an impurity filtering device to filter solid impurities in the waste water introduced into the first liquid storage tank from the first-stage water washing tank.

[0011] Further, the first liquid storage tank and the first-stage water washing tank are provided with an impurity filtering device to filter solid impurities in the waste water introduced into the first liquid storage tank from the first-stage water washing tank.

[0012] Further, the first liquid storage tank and the first-stage water washing tank are provided with an impurity filtering device to filter solid impurities in the waste water introduced into the first liquid storage tank from the first-stage water washing tank.

[0013] Further, the first liquid storage tank and the first-stage water washing tank are provided with an impurity filtering device to filter solid impurities in the waste water introduced into the first liquid storage tank from the first-stage water washing tank.

[0014] The metal salt filtering device has the following beneficial effects:

[0015] The system comprises an electroplating tank and a first water washing tank, the electroplating tank is communicated with a management tank, the first water washing tank is communicated with a countercurrent water washing tank, the first water washing tank is connected with a metal salt filtering device through a pipeline, the metal salt filtering device is connected with the countercurrent water washing tank and the management tank through a pipeline, and an atomization and volatilization device is arranged on the management tank; the workpiece is sequentially cleaned through the first water washing tank and the countercurrent water washing tank after passing through the electroplating tank, the wastewater in the first water washing tank is introduced into the metal salt filtering device, the metal salt filtering device separates metal salt solution and pure water, the pure water is introduced into the countercurrent water washing tank, and the metal salt solution is introduced into the management tank, and the metal salt solution in the management tank is concentrated through the atomization and volatilization device and then enters the electroplating tank; the system can introduce the wastewater generated in the cleaning of the workpiece into the metal salt filtering device in real time, concentrate the separated metal salt solution and then return to use, and introduce the separated pure water into the countercurrent water washing tank, so that the wastewater is instantaneously treated and recycled, and zero-emission recycling is formed. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described below in combination with the drawings and specific embodiments, wherein:

[0017] Figure 1 It is the structural concept view of metal salt recycling system.

[0018] Figure number mark:

[0019] 100, electroplating tank; 101, management tank; 102, atomization and volatilization device;

[0020] 200, first water washing tank; 201, countercurrent water washing tank; 202, first countercurrent tank; 203, second countercurrent tank;

[0021] 300, metal salt filtering device; 301, first liquid storage tank; 302, first filtering mechanism; 303, second liquid storage tank; 304, second filtering mechanism; 305, impurity filtering device; 306, turnover water pump; 307, electromagnetic valve; 308, first high-pressure pump; 309, second high-pressure pump; 310, first backflow valve; 311, first concentration monitoring device; 312, second backflow valve; 313, second concentration monitoring device; 314, first cleaning structure; 315, second cleaning structure; 316, water supplementing structure. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the utility model, the specific embodiments of the utility model "a metal salt recycling system" will be further described in detail below in combination with the drawings.

[0023] Reference Figure 1In the embodiment, the metal salt recycling system comprises an electroplating tank 100, a first water washing tank 200, a metal salt filtering device 300, and a misting and volatilizing device 102. The electroplating tank 100 is connected to the management tank 101. The first water washing tank 200 is connected to the countercurrent water washing tank 201. The first water washing tank 200 is connected to the metal salt filtering device 300 through a pipeline. The metal salt filtering device 300 is connected to the countercurrent water washing tank 201 and the management tank 101 through a pipeline. The management tank 101 is provided with the misting and volatilizing device 102. In use, the workpiece is sequentially cleaned in the electroplating tank 100, the first water washing tank 200, and the countercurrent water washing tank 201. The cleaning water in the countercurrent water washing tank 201 flows back into the first water washing tank 200. The waste water in the first water washing tank 200 flows into the metal salt filtering device 300. The metal salt filtering device 300 separates the metal salt solution and the pure water. The pure water flows into the countercurrent water washing tank 201 and enters the cleaning water circulation. The metal salt solution flows into the management tank 101. The metal salt solution in the management tank 101 is concentrated by the misting and volatilizing device 102 and then enters the electroplating tank 100 and enters the metal salt circulation. The metal salt recycling system instantaneously processes and recycles the waste water generated in the cleaning of the workpiece. The separated metal salt and water in the waste water are recycled, thereby avoiding the storage of the waste water and the time and transportation cost of transporting the waste water to the recycling site.

[0024] More specifically, in the embodiment, the countercurrent water washing tank 201 comprises a first countercurrent tank 202 and a second countercurrent tank 203. The first countercurrent tank 202 is connected to the first water washing tank 200. The second countercurrent tank 203 is connected to the first countercurrent tank 202. The workpiece is sequentially cleaned in the first water washing tank 200, the first countercurrent tank 202, and the second countercurrent tank 203. The pure water separated by the metal salt filtering device 300 flows into the second countercurrent tank 203 through a pipeline. The water in the second countercurrent tank 203 flows back into the first countercurrent tank 202. The water in the first countercurrent tank 202 flows back into the first water washing tank 200. In this way, the workpiece can be cleaned more thoroughly by the staged countercurrent water washing. In use, pure water is additionally added to the second countercurrent tank 203. When the water in the second countercurrent tank 203 is full, it overflows into the first countercurrent tank 202. When the water in the first countercurrent tank 202 is full, it overflows into the first water washing tank 200. In this way, all the waste water after the cleaning of the workpiece flows into the metal salt filtering device 300 through the first water washing tank 200, thereby ensuring that the waste water is fully recycled.

[0025] Further, in the embodiment, the management tank 101 is connected to the misting and volatilizing device 102 through a pipeline. The misting and volatilizing device 102 is connected to the electroplating tank 100 through a pipeline. In another embodiment, the management tank 101 is connected to the misting and volatilizing device 102 through a pipeline. The misting and volatilizing device 102 is connected to the management tank 101 through a pipeline. The management tank 101 and the electroplating tank 100 are connected. In this way, the metal salt solution in the management tank 101 and the electroplating tank 100 can be continuously concentrated.

[0026] Further, referring to Figure 1 In the embodiment, the metal salt filtering device 300 comprises a first storage tank 301, the first storage tank 301 is communicated with the first-stage water washing tank 200 through a pipeline, the first storage tank 301 is communicated with a first-stage filtering mechanism 302 through a pipeline, the first-stage filtering mechanism 302 is communicated with a second storage tank 303 through a pipeline, the second storage tank 303 is communicated with a second-stage filtering mechanism 304 through a pipeline, and the second-stage filtering mechanism 304 is communicated with the counter-flow water washing tank 201 through a pipeline; the first storage tank 301 is communicated with the management tank 101 through a reflux pipeline, the first-stage filtering mechanism 302 is communicated with the first storage tank 301 through a reflux pipeline, the second-stage filtering mechanism 304 is communicated with the second storage tank 303 through a reflux pipeline, and the second storage tank 303 is communicated with the first storage tank 301 through a reflux pipeline. When the metal salt filtering device 300 works, the waste water from the first-stage water washing tank 200 is stored in the first storage tank 301, then the waste water in the first storage tank 301 is introduced into the first-stage filtering mechanism 302, the first-stage filtering mechanism 302 separates the waste water into a first-stage metal salt solution and filtered water, the first-stage metal salt solution is guided back to the first storage tank 301 through a reflux pipeline, the filtered water is guided into the second storage tank 303 through a pipeline, the filtered water in the second storage tank 303 is introduced into the second-stage filtering mechanism 304, the second-stage filtering mechanism 304 separates the filtered water into a second-stage metal salt solution and pure water, the second-stage metal salt solution is guided back to the second storage tank 303 through a reflux pipeline, and the pure water is guided into the counter-flow water washing tank 201 through a pipeline; when the concentration of the solution in the second storage tank 303 reaches a second-stage set concentration, the solution in the second storage tank 303 is guided back to the first storage tank 301, when the concentration of the metal salt solution in the first storage tank 301 reaches a first-stage set concentration, the solution in the first storage tank 301 is guided back to the management tank 101; the first-stage set concentration is greater than the second-stage set concentration. In this way, the second-stage filtering mechanism continuously separates the solution in the second storage tank 303 to make the concentration of the metal salt in the second storage tank 303 higher and higher, the solution in the second storage tank 303 is guided into the first storage tank 301 when it reaches the second-stage set concentration, the first-stage filtering mechanism continuously separates the solution in the first storage tank 301 to make the concentration of the metal salt in the first storage tank 301 higher and higher, and the solution in the first storage tank 301 is guided into the management tank 101 when it reaches the first-stage set concentration, the water is separated by two-stage circulation, the metal salt ions are fully recycled, the separated water is also fully recycled, and zero discharge is realized.

[0027] It should be noted that the pure water here is water with an electric conductivity of 10 us / cm after two filtrations, which has met the standard of pure water.

[0028] More specifically, in the present embodiment, the impurity filtering device 305 is arranged between the first liquid storage tank 301 and the first-stage water washing tank 200 to filter the solid impurities in the waste water from the first-stage water washing tank 200 into the first liquid storage tank 301, so as to ensure that the first-stage filtering mechanism 302 is not blocked.

[0029] Further, the turnover water pump 306 and the electromagnetic valve 307 are arranged between the first liquid storage tank 301 and the first-stage water washing tank 200 to pump the waste water from the first-stage water washing tank 200 into the first liquid storage tank 301 and prevent the waste water from flowing back; the first-stage high-pressure pump 308 is arranged between the first liquid storage tank 301 and the first-stage filtering mechanism 302, and the second-stage high-pressure pump 309 is arranged between the second liquid storage tank 303 and the second-stage filtering mechanism 304, so as to ensure that sufficient power is provided to make the first-stage filtering mechanism 302 sufficiently filter the solution in the first liquid storage tank 301 and make the second-stage filtering mechanism 304 sufficiently filter the solution in the second liquid storage tank 303.

[0030] In addition, in the present embodiment, the first backflow valve 310 is arranged on the backflow pipe between the first liquid storage tank 301 and the management tank 101, and the first concentration monitoring device 311 is arranged on the first liquid storage tank 301; when the first concentration monitoring device 311 detects that the concentration of the solution in the first liquid storage tank 301 reaches the first-stage set concentration, the first backflow valve 310 is controlled to open, and the solution in the first liquid storage tank 301 flows back to the management tank 101; the second backflow valve 312 is arranged on the backflow pipe between the second liquid storage tank 303 and the first liquid storage tank 301, and the second concentration monitoring device 313 is arranged on the second liquid storage tank 303; when the second concentration monitoring device 313 detects that the concentration of the solution in the second liquid storage tank 303 reaches the second-stage set concentration, the second backflow valve 312 is controlled to open, and the solution in the second liquid storage tank 303 flows back to the first liquid storage tank 301; so as to automatically detect and control the solution in the first liquid storage tank 301 to flow back to the management tank 101 and the solution in the second liquid storage tank 303 to flow back to the first liquid storage tank 301.

[0031] Further, in the present embodiment, preferably, the isolation membrane that can separate salt ions and water is arranged in the first-stage filtering mechanism 302 and the second-stage filtering mechanism 304; the first-stage cleaning structure 314 is arranged on the first-stage filtering mechanism 302, so that when the system stops being used, clean water can be introduced through the first-stage cleaning structure 314 to clean the first-stage filtering mechanism 302, so as to prevent the first-stage filtering mechanism 302 from being blocked; the second-stage cleaning structure 315 is arranged on the second-stage filtering mechanism 304, so that when the system stops being used, clean water can be introduced through the second-stage cleaning structure 315 to clean the second-stage filtering mechanism 304, so as to prevent the second-stage filtering mechanism 304 from being blocked; the water supplementing structure 316 is arranged on the second liquid storage tank 303, so that pure water can be supplemented through the water supplementing structure 316, so as to ensure the water balance of the whole system.

[0032] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

[0033] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the present application, "a plurality of" is understood as "at least two". The association relationship of the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. A and B are connected, which can represent: A and B are directly connected and A and B are connected through C. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

Claims

1. A metal salt recycling system characterized by, The application relates to a metal plating device, which comprises an electroplating tank (100) and a first water washing tank (200), the electroplating tank (100) is connected with a management tank (101), the first water washing tank (200) is connected with a countercurrent water washing tank (201), the first water washing tank (200) is connected with a metal salt filtering device (300) through a pipeline, the metal salt filtering device (300) is connected with the countercurrent water washing tank (201) and the management tank (101) through a pipeline, and an atomization and volatilization device (102) is arranged on the management tank (101); after a workpiece passes through the electroplating tank (100), the workpiece is sequentially cleaned in the first water washing tank (200) and the countercurrent water washing tank (201), waste water in the first water washing tank (200) is introduced into the metal salt filtering device (300), the metal salt filtering device (300) separates metal salt solution and pure water, the pure water is introduced into the countercurrent water washing tank (201), the metal salt solution is introduced into the management tank (101), and the metal salt solution in the management tank (101) is concentrated by the atomization and volatilization device (102) and then introduced into the electroplating tank (100).

2. The metal salt recycling system of claim 1, wherein The countercurrent water washing tank (201) comprises a first countercurrent tank (202) and a second countercurrent tank (203), the first countercurrent tank (202) is connected with the first water washing tank (200), and the second countercurrent tank (203) is connected with the first countercurrent tank (202); the workpiece is sequentially cleaned in the first water washing tank (200), the first countercurrent tank (202) and the second countercurrent tank (203); the pure water separated by the metal salt filtering device (300) is introduced into the second countercurrent tank (203) through a pipeline, water in the second countercurrent tank (203) flows reversely into the first countercurrent tank (202), and water in the first countercurrent tank (202) flows reversely into the first water washing tank (200).

3. The metal salt recycling system of claim 2, wherein Pure water is additionally added into the second countercurrent tank (203), water in the second countercurrent tank (203) overflows into the first countercurrent tank (202) when the second countercurrent tank (203) is full, and water in the first countercurrent tank (202) overflows into the first water washing tank (200) when the first countercurrent tank (202) is full, so that all waste water after cleaning the workpiece is introduced into the metal salt filtering device (300) through the first water washing tank (200).

4. The metal salt recycling system of claim 1, wherein The management tank (101) introduces the metal salt solution into the atomization and volatilization device (102) through a pipeline, and the atomization and volatilization device (102) introduces the atomized and concentrated metal salt solution into the electroplating tank (100) / management tank (101) through a pipeline.

5. The metal salt recycling system of claim 1, wherein The metal salt filtering device (300) comprises a first liquid storage tank (301), the first liquid storage tank (301) is communicated with the primary water washing tank (200) through a pipeline, the first liquid storage tank (301) is communicated with a primary filtering mechanism (302) through a pipeline, the primary filtering mechanism (302) is communicated with a second liquid storage tank (303) through a pipeline, the second liquid storage tank (303) is communicated with a secondary filtering mechanism (304) through a pipeline, and the secondary filtering mechanism (304) is communicated with the countercurrent water washing tank (201) through a pipeline; the first liquid storage tank (301) is communicated with the management tank (101) through a reflux pipe, the primary filtering mechanism (302) is communicated with the first liquid storage tank (301) through a reflux pipe, the secondary filtering mechanism (304) is communicated with the second liquid storage tank (303) through a reflux pipe, and the second liquid storage tank (303) is communicated with the first liquid storage tank (301) through a reflux pipe; waste water from the primary water washing tank (200) enters the first liquid storage tank (301), waste water in the first liquid storage tank (301) enters the primary filtering mechanism (302), the primary filtering mechanism (302) separates the waste water into a primary metal salt solution and filtered water, the primary metal salt solution is guided back to the first liquid storage tank (301), the filtered water is guided into the second liquid storage tank (303), filtered water in the second liquid storage tank (303) enters the secondary filtering mechanism (304), the secondary filtering mechanism (304) separates the filtered water into a secondary metal salt solution and pure water, the secondary metal salt solution is guided back to the second liquid storage tank (303), and the pure water is guided into the countercurrent water washing tank (201); when the concentration of the solution in the second liquid storage tank (303) reaches a secondary set concentration, the solution in the second liquid storage tank (303) is guided back to the first liquid storage tank (301), when the metal salt solution in the first liquid storage tank (301) reaches a primary set concentration, the solution in the first liquid storage tank (301) is guided back to the management tank (101), and the primary set concentration is greater than the secondary set concentration.

6. The metal salt recycling system of claim 5, wherein Impurity filtering devices (305) are arranged between the first liquid storage tank (301) and the primary water washing tank (200) to filter solid impurities in waste water entering the first liquid storage tank (301) from the primary water washing tank (200).

7. The metal salt recycling system of claim 6, wherein The first liquid storage tank (301) and the primary water washing tank (200) are further provided with a turnover water pump (306) and an electromagnetic valve (307); a primary high-pressure pump (308) is arranged between the first liquid storage tank (301) and the primary filtering mechanism (302), and a secondary high-pressure pump (309) is arranged between the second liquid storage tank (303) and the secondary filtering mechanism (304).

8. The metal salt recycling system of claim 7, wherein A first backflow valve (310) is arranged on a backflow pipe between the first liquid storage tank (301) and the management tank (101), and a first concentration monitoring device (311) is arranged on the first liquid storage tank (301); when the first concentration monitoring device (311) detects that the concentration of the solution in the first liquid storage tank (301) reaches a first set concentration, the first backflow valve (310) is controlled to open, and the solution in the first liquid storage tank (301) flows back to the management tank (101).

9. The metal salt recycling system of claim 8, wherein A second backflow valve (312) is arranged on a backflow pipe between the second liquid storage tank (303) and the first liquid storage tank (301), a second concentration monitoring device (313) is arranged on the second liquid storage tank (303), and when the second concentration monitoring device (313) detects that the concentration of the solution in the second liquid storage tank (303) reaches a second set concentration, the second backflow valve (312) is controlled to open, and the solution in the second liquid storage tank (303) flows back to the first liquid storage tank (301).

10. The metal salt recycling system of claim 9, wherein A first cleaning structure (314) is arranged on the first filter mechanism (302), a second cleaning structure (315) is arranged on the second filter mechanism (304), and a water supplementing structure (316) is arranged on the second liquid storage tank (303).

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