An electrolyte purification and impurity removal device and method

Abstract

The present application provides an electrolyte purification and impurity removal device. The impurity removal pipeline is used to transport the electrolyte in the electrolytic cell. At least one first impurity removal component is installed at the electrolyte input end of the impurity removal pipeline and is used to remove metal impurities in the electrolyte. At least one second impurity removal component is installed at the electrolyte output end of the impurity removal pipeline and is used to remove non-metal impurities in the electrolyte. The conveying mechanism is installed between the impurity removal pipeline and the electrolytic cell. The present application also provides an impurity removal method for the electrolyte purification and impurity removal device, including the following steps: pumping the electrolyte out of the electrolytic cell; pumping the electrolyte to the first impurity removal component to separate metal impurities; pumping the electrolyte to the second impurity removal component to separate non-metal impurities; and pumping the electrolyte into the electrolytic cell. The electrolyte purification and impurity removal device provided by the present application can separate metal impurities and non-metal impurities, greatly reducing the difficulty of recovering metal impurities and helping to improve the convenience of use.

Description

Technical Field

[0001] This application relates to the field of electrolyte impurity separation equipment, and particularly to an electrolyte purification and impurity removal device and method. Background Art

[0002] An electrolyte is a liquid medium used in electrochemical processes. It can promote the transmission of electric charges and play a key role in electrochemical reactions. During the electrolysis process, impurities inevitably occur in the electrolyte. These impurities can reduce the electrolysis efficiency, damage equipment, and affect product quality, etc. Therefore, maintaining the purity of the electrolyte is crucial for ensuring the stability of the electrolysis process and the quality of the product. In the related art, a filter screen is usually used to filter the electrolyte, and the filter screen separates the impurities from the electrolyte, which helps to keep the electrolyte pure. Electrolyte impurities are divided into metal impurities and non-metal impurities. However, in the related art, a filter screen is usually directly used to filter both metal impurities and non-metal impurities at the same time, which greatly increases the difficulty of recovering metal impurities and reduces the convenience of use. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an electrolyte purification and impurity removal device and method to solve the technical problem in the prior art that the filter screen filters both metal impurities and non-metal impurities at the same time, resulting in an increased difficulty in recovering metal impurities.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide an electrolyte purification and impurity removal device, including:

[0005] An electrolytic cell;

[0006] An impurity removal mechanism, the impurity removal mechanism includes an impurity removal pipeline, at least one first impurity removal component and at least one second impurity removal component. The impurity removal pipeline is used to transport the electrolyte in the electrolytic cell. At least one of the first impurity removal components is installed at the electrolyte input end of the impurity removal pipeline and is used to remove metal impurities in the electrolyte. At least one of the second impurity removal components is installed at the electrolyte output end of the impurity removal pipeline and is used to remove non-metal impurities in the electrolyte;

[0007] A conveying mechanism, the conveying mechanism is installed between the impurity removal pipeline and the electrolytic cell and is configured to pump the electrolyte from the electrolytic cell into the impurity removal pipeline, and is also configured to pump the electrolyte into the electrolytic cell after the electrolyte passes through the first impurity removal component and the second impurity removal component in sequence;

[0008] The first impurity removal component includes a first impurity removal cylinder, an electromagnetic structure, and a first impurity pusher. The first impurity removal cylinder is connected to the impurity removal pipeline and is in communication with the impurity removal pipeline. The electromagnetic structure is installed on the first impurity removal cylinder and is configured to adsorb metal impurities in the electrolyte when energized. The first impurity pusher is installed on the first impurity removal cylinder and is configured to be able to move towards the first impurity removal cylinder to push the metal impurities adsorbed on the surface of the electromagnetic structure into the first impurity removal cylinder.

[0009] Optionally, the first impurity removal cylinder includes a first cylinder body, a first liquid inlet pipe, a first liquid inlet switch, a first liquid outlet pipe, and a first liquid outlet switch. The first cylinder body is connected to the impurity removal pipeline and is in communication with the impurity removal pipeline. The first liquid inlet pipe and the first liquid outlet pipe are both connected to the first cylinder body and are both in communication with the first cylinder body. The first liquid inlet switch is installed on the first liquid inlet pipe and is used to control the on-off of the first liquid inlet pipe. The first liquid outlet switch is installed on the first liquid outlet pipe and is used to control the on-off of the first liquid outlet pipe.

[0010] Optionally, the first impurity pusher includes a first impurity pusher plate and multiple first push rods. The first impurity pusher plate is sleeved on the outer periphery of the electromagnetic structure and is located in the impurity removal pipeline. Multiple first push rods are all connected to the first impurity pusher plate and all penetrate through the first cylinder body;

[0011] Wherein, the first impurity pusher has a first impurity removal state in which the first impurity pusher plate is separated from the first cylinder body, and also has a first impurity cleaning state in which the first impurity pusher plate is in contact with the first cylinder body.

[0012] Optionally, the first impurity removal cylinder further includes multiple first limiting holes and multiple second limiting holes. Multiple first limiting holes and multiple second limiting holes are both opened on the first cylinder body. The first limiting holes and the second limiting holes are arranged along the moving direction of the first impurity pusher plate;

[0013] The first impurity pusher further includes multiple connecting plates, multiple limiting plates, and multiple limiting structures. Multiple connecting plates are respectively connected to one ends of multiple first push rods far away from the first impurity pusher plate. Multiple limiting plates are respectively connected to multiple connecting plates. Multiple limiting structures are respectively screwed to multiple limiting plates and are configured to be respectively limited in multiple first limiting holes in the first impurity removal state, and are also configured to be respectively limited in multiple second limiting holes in the first impurity cleaning state.

[0014] Optionally, the second impurity removal component includes a filter element, a second impurity removal cylinder, and a second impurity pusher. The filter element is installed in the impurity removal pipeline and is used to filter and collect non-metallic impurities in the electrolyte. The second impurity removal cylinder is connected to the impurity removal pipeline and communicates with the impurity removal pipeline. The second impurity pusher is installed in the second impurity removal cylinder and is configured to be able to move towards the second impurity removal cylinder to push the non-metallic impurities collected by the filter element into the second impurity removal cylinder.

[0015] Optionally, the second impurity removal cylinder includes a second cylinder body, a second liquid inlet pipe, a second liquid inlet switch, a second liquid outlet pipe, and a second liquid outlet switch. The second cylinder body is connected to the impurity removal pipeline and communicates with the impurity removal pipeline. The second liquid inlet pipe and the second liquid outlet pipe are both connected to the second cylinder body and both communicate with the second cylinder body. The second liquid inlet switch is installed on the second liquid inlet pipe and is used to control the on-off of the second liquid inlet pipe. The second liquid outlet switch is installed on the second liquid outlet pipe and is used to control the on-off of the second liquid outlet pipe.

[0016] Optionally, the filter element includes a filter cylinder, a liquid inlet, and an end cap. The filter cylinder is disposed through the impurity removal pipeline, and its axial direction is perpendicular to the electrolyte conveying direction. The liquid inlet is opened on one side of the filter cylinder facing the first impurity removal component. The end cap is sealingly installed at one end of the filter cylinder away from the second cylinder body.

[0017] Optionally, the second impurity pusher includes a second push rod and a second impurity pushing plate. The second push rod is screwed to the second cylinder body and is configured to move relative to the second cylinder body after rotating relative to the second cylinder body. The second impurity pushing plate is connected to one end of the second push rod and moves with the second push rod and is located inside the filter cylinder;

[0018] Wherein, the second impurity pusher has a second impurity removal state where the second impurity pushing plate is located inside the filter cylinder away from the second cylinder body, and also has a second impurity cleaning state where the second impurity pushing plate contacts the second cylinder body.

[0019] The present application also provides a method for removing impurities of an electrolyte purification and impurity removal device, including the following steps:

[0020] Pump the electrolyte out of the electrolytic cell;

[0021] Pump the electrolyte to the first impurity removal component to separate metal impurities;

[0022] Pump the electrolyte to the second impurity removal component to separate non-metallic impurities;

[0023] Pump the electrolyte into the electrolytic cell.

[0024] The beneficial effects of the electrolyte purification and impurity removal device provided by this application are as follows:

[0025] For the electrolyte purification and impurity removal device provided by this application, the first impurity removal component can separate metal impurities from the electrolyte, and the second impurity removal component can separate non-metal impurities from the electrolyte. Compared with the related technology, during the impurity removal process, metal impurities and non-metal impurities can be separated, greatly reducing the difficulty of recovering metal impurities and helping to improve the convenience of use. Moreover, with the cooperation of the conveying mechanism and the impurity removal pipeline, the electrolyte in the electrolytic cell can circulate, and thus the first impurity removal component and the second impurity removal component can continuously separate impurities from the electrolyte, with good impurity removal effect, effectively ensuring the electrolysis efficiency and product quality. With the cooperation of the first impurity removal cylinder, the electromagnetic structure and the first impurity pusher, it is convenient to separate metal impurities from the impurity removal pipeline, and it is easy to use. Compared with the related technology, during the cleaning process, it can prevent impurities in the air from entering the impurity removal pipeline and causing pollution to the electrolyte, ensuring the purity of the electrolyte and being convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a three-dimensional view of the electrolyte purification and impurity removal device provided by the embodiment of this application;

[0028] Figure 2 is a three-dimensional view of the internal structure of the electrolyte purification and impurity removal device provided by the embodiment of this application from the first perspective;

[0029] Figure 3 is a three-dimensional view of the internal structure of the electrolyte purification and impurity removal device provided by the embodiment of this application from the second perspective;

[0030] Figure 4 is Figure 3 a partial enlarged view of part A in

[0031] Figure 5 is a three-dimensional view of the internal structure of the electrolyte purification and impurity removal device provided by the embodiment of this application from the third perspective;

[0032] Figure 6 is a flowchart of the impurity removal method of the electrolyte purification and impurity removal device provided by the embodiment of this application.

[0033] Among them, the reference numerals in the drawings are as follows:

[0034] 1. Electrolytic cell;

[0035] 2. Impurity removal mechanism; 21. Impurity removal pipeline; 22. First impurity removal component; 221. First impurity removal cylinder; 2211. First cylinder body; 2212. First liquid inlet pipe; 2213. First liquid outlet pipe; 2214. First limiting hole; 2215. Second limiting hole; 222. Electromagnetic structure; 223. First impurity pusher; 2231. First impurity pushing plate; 2232. First push rod; 2233. Connecting plate; 2234. Limiting plate; 2235. Limiting structure; 23. Second impurity removal component; 231. Filtering component; 2311. Filtering cylinder; 2312. Liquid inlet; 2313. End cover; 232. Second impurity removal cylinder; 2321. Second cylinder body; 2322. Second liquid inlet pipe; 2323. Second liquid outlet pipe; 233. Second impurity pusher; 2331. Second push rod; 2332. Second impurity pushing plate; 24. Observation window;

[0036] 3. Conveying mechanism; 31. Output pipe; 32. First conveying pump; 33. First bent pipe; 34. Second bent pipe; 35. Second conveying pump; 36. Input pipe. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It should be noted that when an element is referred to as being "mounted on", "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0040] Such as Figure 1 and Figure 2As shown in the figure, an electrolyte purification and impurity removal device is provided in an embodiment of the present application, which includes an electrolytic cell 1, an impurity removal mechanism 2, and a conveying mechanism 3. The impurity removal mechanism 2 includes an impurity removal pipeline 21, at least one first impurity removal component 22, and at least one second impurity removal component 23. The impurity removal pipeline 21 is used to convey the electrolyte in the electrolytic cell 1. At least one first impurity removal component 22 is installed at the electrolyte input end of the impurity removal pipeline 21 and is used to remove metal impurities in the electrolyte. At least one second impurity removal component 23 is installed at the electrolyte output end of the impurity removal pipeline 21 and is used to remove non-metal impurities in the electrolyte. The conveying mechanism 3 is installed between the impurity removal pipeline 21 and the electrolytic cell 1 and is configured to pump the electrolyte from the electrolytic cell 1 into the impurity removal pipeline 21, and is also configured to pump the electrolyte into the electrolytic cell 1 after the electrolyte passes through the first impurity removal component 22 and the second impurity removal component 23 in sequence. The first impurity removal component 22 includes a first impurity removal cylinder 221, an electromagnetic structure 222, and a first impurity pusher 223. The first impurity removal cylinder 221 is connected to the impurity removal pipeline 21 and is in communication with the impurity removal pipeline 21. The electromagnetic structure 222 is installed in the first impurity removal cylinder 221 and is configured to adsorb metal impurities in the electrolyte when energized. The first impurity pusher 223 is installed in the first impurity removal cylinder 221 and is configured to be able to move towards the first impurity removal cylinder 221 to push the metal impurities adsorbed on the surface of the electromagnetic structure 222 into the first impurity removal cylinder 221.

[0041] It should also be noted here that the sources of metal impurities (iron, cobalt, nickel) in the electrolyte are as follows: trace metal impurities may be contained in the raw materials of the electrolyte (such as solvents, electrolytes, etc.). Production equipment such as electrolytic cells, pipelines, and valves may release metal ions due to corrosion or wear. Corrosion products on the electrode surface, electrolytic products, etc. may become metal impurities. Dust in the air, metal ions in water, etc. may also enter the electrolyte. Metal impurities may gradually accumulate during the recycling process of the electrolyte. The sources of non-metal impurities in the electrolyte are as follows: organic solvents in the electrolyte (such as carbonate solvents) may decompose under high temperature or electrochemical conditions, generating organic by-products. Additives (such as decomposition products of VC, LiPF6) may degrade during electrolysis, generating organic impurities. Oils or lubricants used in the production process may remain and enter the electrolyte. If the water used contains minerals such as calcium and magnesium, these minerals will be brought into the electrolyte. Metals in the equipment (such as copper, iron, etc.) release inorganic salts during corrosion. Some additives may contain trace amounts of inorganic salts. Dust in the air may enter the electrolyte. Undissolved solid particles may exist in the electrolyte during the production process. Fluorides, chlorides, etc. may come from the preparation of the electrolyte or the corrosion of production equipment. Ammonia, nitrites, etc. may come from by-products during the production process.

[0042] It should be noted here that after the first impurity removal component 22 separates metal impurities from the electrolyte, the metal impurities adhere to the surface of the first impurity removal component 22. As the metal impurities accumulate, it is easy to cause the separation effect of the first impurity removal component 22 to deteriorate. Therefore, it is necessary to regularly clean the metal impurities on the surface of the first impurity removal component 22. In the related art, the first impurity removal component 22 is usually directly removed, and after the metal impurities on the surface of the first impurity removal component 22 are removed, the first impurity removal component 22 is reinstalled in place. Using the above method, it is easy for impurities in the air to enter the pipeline, resulting in the contamination of the electrolyte.

[0043] It should be noted here that in this embodiment, the number of the first impurity removal components 22 and the number of the second impurity removal components 23 are both set to one for illustration. Of course, in other embodiments, according to actual application requirements, the number of the first impurity removal components 22 and the number of the second impurity removal components 23 can also be set to two, three, four... other numbers, which are not uniquely limited here.

[0044] In the electrolyte purification and impurity removal device provided by the present application, the first impurity removal component 22 can separate metal impurities from the electrolyte, and the second impurity removal component 23 can separate non-metal impurities from the electrolyte. Compared with the related art, during the impurity removal process, metal impurities and non-metal impurities can be separated, greatly reducing the difficulty of recovering metal impurities and helping to improve the convenience of use. Moreover, under the cooperation of the conveying mechanism 3 and the impurity removal pipeline 21, the electrolyte in the electrolytic cell 1 can circulate, so that the first impurity removal component 22 and the second impurity removal component 23 can continuously separate impurities from the electrolyte, with good impurity removal effect, effectively ensuring the electrolysis efficiency and product quality. With the cooperation of the first impurity removal cylinder 221, the electromagnetic structure 222 and the first impurity pusher 223, it is convenient to separate metal impurities from the impurity removal pipeline 21, and it is easy to use. Compared with the related art, during the cleaning process, it can prevent impurities in the air from entering the impurity removal pipeline 21 and causing the contamination of the electrolyte, ensuring the purity of the electrolyte and being convenient to clean.

[0045] Optionally, the electromagnetic structure 222 is set as an electromagnet.

[0046] In an embodiment of the present application, please refer to Figure 2, the first impurity removal cylinder 221 includes a first cylinder body 2211, a first liquid inlet pipe 2212, a first liquid inlet switch (not shown in the figure), a first liquid outlet pipe 2213 and a first liquid outlet switch (not shown in the figure). The first cylinder body 2211 is connected to the impurity removal pipeline 21 and communicates with the impurity removal pipeline 21. Both the first liquid inlet pipe 2212 and the first liquid outlet pipe 2213 are connected to the first cylinder body 2211 and communicate with the first cylinder body 2211. The first liquid inlet switch is installed on the first liquid inlet pipe 2212 and is used to control the on-off of the first liquid inlet pipe 2212. The first liquid outlet switch is installed on the first liquid outlet pipe 2213 and is used to control the on-off of the first liquid outlet pipe 2213.

[0047] With such a setting, by using the first liquid inlet switch and the first liquid outlet switch, in the closed state, a relatively sealed space can be formed in cooperation with the first cylinder body 2211 and the first impurity pusher 223. In the open state, the external electrolyte can enter the first cylinder body 2211, and with the cooperation of the first liquid outlet pipe 2213, the metal impurities in the first cylinder body 2211 can be flushed out. With the cooperation of the first cylinder body 2211, the first liquid inlet pipe 2212, the first liquid inlet switch, the first liquid outlet pipe 2213 and the first liquid outlet switch, the metal impurities can be removed under relatively sealed conditions, preventing the electrolyte from being contaminated and effectively ensuring the purity of the electrolyte. Moreover, it is convenient to separate the metal impurities from the impurity removal pipeline 21, and it is easy to use.

[0048] In an embodiment of the present application, please refer to Figure 2 , the first impurity pusher 223 includes a first impurity push plate 2231 and multiple first push rods 2232. The first impurity push plate 2231 is sleeved on the outer periphery of the electromagnetic structure 222 and is located in the impurity removal pipeline 21. The multiple first push rods 2232 are all connected to the first impurity push plate 2231 and all pass through the first cylinder body 2211. Among them, the first impurity pusher 223 has a first impurity removal state in which the first impurity push plate 2231 is separated from the first cylinder body 2211, and also has a first impurity cleaning state in which the first impurity push plate 2231 is in contact with the first cylinder body 2211.

[0049] With such a setting, by using the multiple first push rods 2232, the first impurity push plate 2231 can be moved along the electromagnetic structure 222, so that the first impurity pusher 223 can be switched between the first impurity removal state and the first impurity cleaning state. In the first impurity removal state, the electromagnetic structure 222 can separate the metal impurities from the electrolyte. In the first impurity cleaning state, the metal impurities can be flushed out of the first cylinder body 2211, and the adjustment is convenient.

[0050] In an embodiment of the present application, refer to Figures 2 to 4, the first impurity removal cylinder 221 further includes a plurality of first limiting holes 2214 and a plurality of second limiting holes 2215. The plurality of first limiting holes 2214 and the plurality of second limiting holes 2215 are both formed in the first cylinder body 2211, and the first limiting holes 2214 and the second limiting holes 2215 are arranged along the moving direction of the first impurity pushing plate 2231.

[0051] The first impurity pushing member 223 further includes a plurality of connecting plates 2233, a plurality of limiting plates 2234 and a plurality of limiting structures 2235. The plurality of connecting plates 2233 are respectively connected to one ends of the plurality of first push rods 2232 away from the first impurity pushing plate 2231. The plurality of limiting plates 2234 are respectively connected to the plurality of connecting plates 2233. The plurality of limiting structures 2235 are respectively screwed to the plurality of limiting plates 2234 and are configured to be respectively limited in the plurality of first limiting holes 2214 in the first impurity removal state, and are further configured to be respectively limited in the plurality of second limiting holes 2215 in the first impurity clearing state.

[0052] With such a setting, when the limiting structure 2235 is limited in the first limiting hole 2214 or the second limiting hole 2215, the limiting plate 2234 can be limited, so that the first impurity pushing member 223 can stably be in the first impurity removal state or the first impurity clearing state, which helps to improve the stability of the device during use and effectively ensures the separation effect. Moreover, the first limiting holes 2214, the second limiting holes 2215, the connecting plates 2233, the limiting plates 2234 and the limiting structures 2235 are all provided in plurality, which helps to further improve the stability of the device during use. When the limiting structure 2235 is taken out from the first limiting hole 2214 or the second limiting hole 2215, the limitation on the limiting plate 2234 can be released, so that the first impurity pushing member 223 can be switched between the first impurity removal state and the first impurity clearing state, which is convenient for separating metal impurities from the electrolyte and also convenient for separating metal impurities from the impurity removal pipeline 21, and helps to improve the convenience of use.

[0053] Optionally, the first impurity pushing member 223 further includes a plurality of sealing rings. The plurality of sealing rings are respectively sleeved on the outer peripheries of the plurality of first push rods 2232 and are sealed between the first push rods 2232 and the first cylinder body 2211.

[0054] With such a setting, by using a plurality of sealing rings, it can prevent impurities from contaminating the electrolyte due to the gap between the first push rod 2232 and the first cylinder body 2211, and can also prevent the electrolyte from overflowing from the gap between the first push rod 2232 and the first cylinder body 2211.

[0055] Optionally, the limiting structure 2235 is set as a screw.

[0056] In an embodiment of the present application, please refer to Figure 1 andFigure 5 The second impurity removal component 23 includes a filter element 231, a second impurity removal cylinder 232, and a second impurity pusher 233. The filter element 231 is installed in the impurity removal pipeline 21 and is used to filter and collect non-metallic impurities in the electrolyte. The second impurity removal cylinder 232 is connected to the impurity removal pipeline 21 and is in communication with the impurity removal pipeline 21. The second impurity pusher 233 is installed in the second impurity removal cylinder 232 and is configured to be able to move towards the second impurity removal cylinder 232 to push the non-metallic impurities collected by the filter element 231 into the second impurity removal cylinder 232.

[0057] With such a setting, with the cooperation of the second impurity removal cylinder 232, the filter element 231, and the second impurity pusher 233, it is convenient to separate non-metallic impurities from the impurity removal pipeline 21, and it is easy to use. Compared with the related art, during the cleaning process, it can prevent impurities in the air from entering the impurity removal pipeline 21 and causing pollution to the electrolyte, ensuring the purity of the electrolyte, and the cleaning is convenient.

[0058] In an embodiment of the present application, please refer to Figure 1 and Figure 5 The second impurity removal cylinder 232 includes a second cylinder body 2321, a second liquid inlet pipe 2322, a second liquid inlet switch (not shown in the figure), a second liquid outlet pipe 2323, and a second liquid outlet switch (not shown in the figure). The second cylinder body 2321 is connected to the impurity removal pipeline 21 and is in communication with the impurity removal pipeline 21. Both the second liquid inlet pipe 2322 and the second liquid outlet pipe 2323 are connected to the second cylinder body 2321 and are in communication with the second cylinder body 2321. The second liquid inlet switch is installed on the second liquid inlet pipe 2322 and is used to control the on-off of the second liquid inlet pipe 2322. The second liquid outlet switch is installed on the second liquid outlet pipe 2323 and is used to control the on-off of the second liquid outlet pipe 2323.

[0059] With such a setting, by using the second liquid inlet switch and the second liquid outlet switch, in the closed state, a relatively sealed space can be formed in cooperation with the second cylinder body 2321 and the second impurity pusher 233. In the open state, external electrolyte can enter the second cylinder body 2321, and with the cooperation of the second liquid outlet pipe 2323, the non-metallic impurities in the second cylinder body 2321 can be flushed out. With the cooperation of the second cylinder body 2321, the second liquid inlet pipe 2322, the second liquid inlet switch, the second liquid outlet pipe 2323, and the second liquid outlet switch, the non-metallic impurities can be cleared under relatively sealed conditions, preventing the electrolyte from being polluted, and effectively ensuring the purity of the electrolyte. Moreover, it is convenient to separate non-metallic impurities from the impurity removal pipeline 21, and it is easy to use.

[0060] In an embodiment of the present application, refer to Figure 1 and Figure 5, the filter element 231 includes a filter cartridge 2311, a liquid inlet 2312, and an end cap 2313. The filter cartridge 2311 is disposed through the impurity removal pipe 21, and the axial direction is perpendicular to the electrolyte delivery direction. The liquid inlet 2312 is opened on the side of the filter cartridge 2311 facing the first impurity removal component 22, and the end cap 2313 is sealingly installed at one end of the filter cartridge 2311 away from the second cylinder body 2321.

[0061] With such a setting, by opening the liquid inlet 2312 on the filter cartridge 2311, after separating the non-metallic impurities in the electrolyte, the non-metallic impurities are made to enter the filter cartridge 2311 as much as possible, facilitating the second impurity pusher 233 to push the non-metallic impurities into the second cylinder body 2321, which helps improve the convenience of use. By using the end cap 2313, the filter cartridge 2311 can be detachably connected to the impurity removal pipe 21, facilitating maintenance and replacement, which helps improve the convenience of use. Moreover, during use, the end of the filter cartridge 2311 away from the second cylinder body 2321 can be sealed to prevent electrolyte leakage.

[0062] In an embodiment of the present application, please refer to Figure 1 , the second impurity pusher 233 includes a second push rod 2331 and a second impurity push plate 2332. The second push rod 2331 is screwed to the second cylinder body 2321 and is configured to move relative to the second cylinder body 2321 after rotating relative to the second cylinder body 2321. The second impurity push plate 2332 is connected to one end of the second push rod 2331 and moves with the second push rod 2331 and is located inside the filter cartridge 2311.

[0063] Among them, the second impurity pusher 233 has a second impurity removal state where the second impurity push plate 2332 is located inside the filter cartridge 2311 away from the second cylinder body 2321, and also has a second impurity clearing state where the second impurity push plate 2332 contacts the second cylinder body 2321.

[0064] With such a setting, since the second push rod 2331 is screwed to the second cylinder body 2321, the second impurity pusher 233 can stably be in the second impurity removal state or the second impurity clearing state, which helps improve the stability of the device during use and effectively ensures the separation effect. By rotating the second push rod 2331, the second impurity pusher 233 can be switched between the second impurity removal state and the second impurity clearing state, facilitating the separation of non-metallic impurities from the electrolyte and also facilitating the separation of non-metallic impurities from the impurity removal pipe 21, which helps improve the convenience of use.

[0065] Optionally, the impurity removal mechanism 2 further includes a plurality of observation windows 24. The plurality of observation windows 24 are all installed on the impurity removal pipeline 21 and are arranged in one-to-one correspondence with the first impurity removal component 22 and the second impurity removal component 23. The number of the plurality of observation windows 24 is equal to the sum of the number of the first impurity removal component 22 and the number of the second impurity removal component 23.

[0066] With such an arrangement, through the observation window 24, it is convenient for the staff to observe the accumulation of metal impurities at the electromagnetic structure 222 in the impurity removal pipeline 21, and it is also convenient for the staff to observe the accumulation of non-metal impurities in the filter cartridge 2311, which is convenient for the staff to separate the metal impurities and non-metal impurities from the impurity removal pipeline 21 in time, contributing to improving the convenience of use.

[0067] Optionally, the conveying structure includes an output pipe 31, a first conveying pump 32, a first bent pipe 33, a second bent pipe 34, a second conveying pump 35 and an input pipe 36. The output pipe 31 and the input pipe 36 are both installed on the electrolytic cell 1. The first conveying pump 32 is installed at one end of the output pipe 31 away from the electrolytic cell 1. The first bent pipe 33 is installed between the first conveying pump 32 and the impurity removal pipeline 21. The second bent pipe 34 is installed at one end of the impurity removal pipeline 21 away from the first bent pipe 33. The second conveying pump 35 is installed between the second bent pipe 34 and the input pipe 36.

[0068] With such an arrangement, under the cooperation of the output pipe 31, the first conveying pump 32, the first bent pipe 33, the second bent pipe 34, the second conveying pump 35 and the input pipe 36, the electrolyte in the electrolytic cell 1 can circulate through the first impurity removal component 22 and the second impurity removal component 23, and the separation effect is good.

[0069] The working principle of the electrolyte purification and impurity removal device provided by the present application is as follows: When using the device, the conveying mechanism 3 is started, and the conveying mechanism 3 pumps the electrolyte out of the electrolytic cell 1. Under the action of the conveying mechanism 3, the electrolyte is pumped to the impurity removal pipeline 21. In the impurity removal pipeline 21, the electrolyte first passes through the first impurity removal component 22. Under the action of the first impurity removal component 22, the metal impurities can be separated from the electrolyte. After separating the metal impurities, the electrolyte then passes through the second impurity removal component 23. Under the action of the second impurity removal component 23, the non-metal impurities can be separated from the electrolyte. Under the action of the conveying mechanism 3, the electrolyte is pumped back into the electrolytic cell 1.

[0070] During the impurity removal process, the electromagnetic structure 222 is started. When the electrolyte passes through the electromagnetic structure 222, the electromagnetic structure 222 can adsorb the metal impurities in the electrolyte. It should be noted here that the electromagnetic structure 222 includes an electromagnetic body and an adsorption rod. The electromagnetic body is fixedly installed on the outer periphery of the impurity removal pipeline 21, and the adsorption rod is installed on the electromagnetic body and is located in the impurity removal pipeline 21. Among them, the metal impurities adsorbed by the electromagnetic structure 222 are located on the surface of the adsorption rod.

[0071] When the first impurity pusher 223 switches from the first impurity removal state to the first impurity cleaning state, the staff rotates the limiting structure 2235 to remove the limiting structure 2235 from the first limiting hole 2214. After removing the limiting structure 2235 from the first limiting hole 2214, the staff drives multiple limiting plates 2234 to gradually move away from the impurity removal pipe 21. During this process, multiple connecting plates 2233 and multiple first push rods 2232 move synchronously with the multiple limiting plates 2234, and the electromagnetic body and the adsorption rod remain fixed. When the first impurity push plate 2231 moves towards the first cylinder body 2211, the first impurity push plate 2231 will push the metal impurities on the surface of the adsorption rod in the impurity removal pipe 21 into the first cylinder body 2211 until the first impurity push plate 2231 covers the first cylinder body 2211. After the first impurity push plate 2231 covers the first cylinder body 2211, the first cylinder body 2211 is in a relatively sealed state and is separated from the impurity removal pipe 21. The staff cuts off the power supply of the electromagnetic structure 222, and the metal impurities on the surface of the adsorption rod of the electromagnetic structure 222 fall off, and the metal impurities are in a free movement state in the first cylinder body 2211. Among them, the first liquid inlet pipe 2212 is communicated with an external electrolyte storage container. The staff turns on the first liquid inlet switch and the first liquid outlet switch. The external electrolyte enters the first cylinder body 2211 through the first liquid inlet pipe 2212 and flushes the metal impurities in the first cylinder body 2211 out from the first liquid outlet pipe 2213. After flushing out the metal impurities, the staff turns off the first liquid inlet switch and the first liquid outlet switch.

[0072] When the first impurity pusher 223 switches from the first impurity cleaning state to the first impurity removal state, the staff rotates the limiting structure 2235 to remove the limiting structure 2235 from the second limiting hole 2215. After removing the limiting structure 2235 from the second limiting hole 2215, the staff can drive the multiple connecting plates 2233, the multiple first push rods 2232 and the first impurity push plate 2231 to reset through the multiple limiting plates 2234. After the reset is completed, the first impurity pusher 223 switches to the first impurity removal state.

[0073] After using the first impurity removal component 22 to separate metal impurities from the electrolyte, the electrolyte is pumped to the filter element 231. After the electrolyte passes through the filter element 231, the filter element 231 can separate non-metal impurities in the electrolyte.

[0074] When the second impurity pusher 233 is in the second impurity removal state, the electrolyte can enter the filter cylinder 2311 through the liquid inlet 2312, and the filter cylinder 2311 can filter the electrolyte to separate non-metal impurities in the electrolyte, and the non-metal impurities are filtered into the filter cylinder 2311.

[0075] When the second impurity pushing member 233 switches from the second impurity removing state to the second impurity clearing state, the operator rotates the second push rod 2331. Since the second push rod 2331 is screwed to the second cylinder body 2321, the second push rod 2331 can move relative to the second cylinder body 2321. The second push rod 2331 drives the second impurity pushing plate 2332 to move towards the second cylinder body 2321 until the second impurity pushing plate 2332 covers one end of the second cylinder body 2321 close to the filter cylinder 2311. During this process, under the push of the second impurity pushing plate 2332, the non-metallic impurities in the filter cylinder 2311 are pushed into the second cylinder body 2321. Among them, the second liquid inlet pipe 2322 is communicated with an external electrolyte storage container. The operator turns on the second liquid inlet switch and the second liquid outlet switch. The external electrolyte enters the second cylinder body 2321 through the second liquid inlet pipe 2322 and flushes out the non-metallic impurities in the second cylinder body 2321 from the second liquid outlet pipe 2323. After flushing out the non-metallic impurities, the operator turns off the second liquid inlet switch and the second liquid outlet switch.

[0076] When the second impurity pushing member 233 switches from the second impurity clearing state to the second impurity removing state, the operator rotates the second push rod 2331 in the reverse direction to reset the second impurity pushing plate 2332, so that the second impurity pushing member 233 switches to the second impurity removing state.

[0077] As Figure 1 and Figure 6 shown, the present application also provides a method for removing impurities of an electrolyte purification and impurity removal device, including the following steps:

[0078] Step S1: Pump out the electrolyte from the electrolytic cell 1.

[0079] Step S2: Pump the electrolyte to the first impurity removal component 22 to separate metal impurities.

[0080] Step S3: Pump the electrolyte to the second impurity removal component 23 to separate non-metallic impurities.

[0081] Step S4: Pump the electrolyte into the electrolytic cell 1.

[0082] The method for removing impurities of the electrolyte purification and impurity removal device provided by the present application can separately separate metal impurities and non-metallic impurities, and greatly reduces the difficulty of recovery when recovering metal impurities. Moreover, it can achieve cyclic impurity removal with good separation effect.

[0083] One or more embodiments in the present application are intended to cover all such substitutions, modifications and variations falling within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments in the present application shall be included within the protection scope of the present application.

Claims

1. An electrolyte purification and impurity removal device, characterized in that, Comprising: An electrolytic cell (1); An impurity removal mechanism (2), the impurity removal mechanism (2) comprising an impurity removal pipeline (21), at least one first impurity removal component (22) and at least one second impurity removal component (23), the impurity removal pipeline (21) being used for conveying the electrolyte in the electrolytic cell (1); A conveying mechanism (3), the conveying mechanism (3) being installed between the impurity removal pipeline (21) and the electrolytic cell (1); Wherein, the first impurity removal component (22) comprises a first impurity removal cylinder (221), an electromagnetic structure (222) and a first impurity pusher (223), the first impurity removal cylinder (221) being connected to the impurity removal pipeline (21) and communicating with the impurity removal pipeline (21), the electromagnetic structure (222) being installed in the first impurity removal cylinder (221) and configured to adsorb metal impurities in the electrolyte when powered on, the first impurity pusher (223) being installed in the first impurity removal cylinder (221) and configured to be able to move towards the first impurity removal cylinder (221) to push the metal impurities adsorbed on the surface of the electromagnetic structure (222) into the first impurity removal cylinder (221); The first impurity removal cylinder (221) comprises a first cylinder body (2211), a first liquid inlet pipe (2212), a first liquid inlet switch, a first liquid outlet pipe (2213) and a first liquid outlet switch, the first liquid inlet pipe (2212) being communicated with an external electrolyte storage container, the first liquid inlet switch and the first liquid outlet switch being configured to enclose a relatively sealed space with the first cylinder body (2211) and the first impurity pusher (223) in the closed state, and further being configured to flush out the metal impurities in the first cylinder body (2211) with external electrolyte in the open state; The second impurity removal component (23) comprises a filter element (231), a second impurity removal cylinder (232) and a second impurity pusher (233); The second impurity removal cylinder (232) comprises a second cylinder body (2321), a second liquid inlet pipe (2322), a second liquid inlet switch, a second liquid outlet pipe (2323) and a second liquid outlet switch, the second cylinder body (2321) being connected to the impurity removal pipeline (21) and communicating with the impurity removal pipeline (21), the second liquid inlet pipe (2322) and the second liquid outlet pipe (2323) both being connected to the second cylinder body (2321) and both communicating with the second cylinder body (2321), the second liquid inlet switch being installed on the second liquid inlet pipe (2322) and used for controlling the on-off of the second liquid inlet pipe (2322), the second liquid outlet switch being installed on the second liquid outlet pipe (2323) and used for controlling the on-off of the second liquid outlet pipe (2323); the second liquid inlet switch and the second liquid outlet switch being configured to enclose a relatively sealed space with the second cylinder body (2321) and the second impurity pusher (233) in the closed state, and further being configured to flush out the non-metal impurities in the second cylinder body (2321) with external electrolyte in the open state; The filter element (231) includes a filter cartridge (2311), a liquid inlet (2312), and an end cap (2313). The filter cartridge (2311) is disposed in the impurity removal pipe (21) and is used to filter and collect non-metallic impurities in the electrolyte, and the axial direction is perpendicular to the electrolyte conveying direction. The liquid inlet (2312) is opened on one side of the filter cartridge (2311) facing the first impurity removal assembly (22). The end cap (2313) is sealingly installed at one end of the filter cartridge (2311) away from the second cylinder body (2321). The second impurity pusher (233) includes a second push rod (2331) and a second impurity push plate (2332).

2. The electrolyte purification and impurity removal device according to claim 1, wherein The first cylinder body (2211) is connected to the impurity removal pipe (21) and is in communication with the impurity removal pipe (21). The first liquid inlet pipe (2212) and the first liquid outlet pipe (2213) are both connected to the first cylinder body (2211) and are in communication with the first cylinder body (2211). The first liquid inlet switch is installed on the first liquid inlet pipe (2212) and is used to control the on-off of the first liquid inlet pipe (2212). The first liquid outlet switch is installed on the first liquid outlet pipe (2213) and is used to control the on-off of the first liquid outlet pipe (2213).

3. The electrolyte purification and impurity removal device according to claim 2, characterized in that, The first impurity pusher (223) includes a first impurity push plate (2231) and a plurality of first push rods (2232). The first impurity push plate (2231) is sleeved on the outer periphery of the electromagnetic structure (222) and is located in the impurity removal pipe (21). The plurality of first push rods (2232) are all connected to the first impurity push plate (2231) and all pass through the first cylinder body (2211). Among them, the first impurity pusher (223) has a first impurity removal state in which the first impurity push plate (2231) is separated from the first cylinder body (2211), and also has a first impurity cleaning state in which the first impurity push plate (2231) is in contact with the first cylinder body (2211). The second push rod (2331) is screwed to the second cylinder body (2321) and is configured to move relative to the second cylinder body (2321) after rotating relative to the second cylinder body (2321). The second impurity push plate (2332) is connected to one end of the second push rod (2331) and is located in the filter cartridge (2311). Among them, the second impurity pusher (233) has a second impurity removal state in which the second impurity push plate (2332) is located away from the second cylinder body (2321) in the filter cartridge (2311), and also has a second impurity cleaning state in which the second impurity push plate (2332) is in contact with the second cylinder body (2321).

4. The electrolyte purification and impurity removal device according to claim 3, characterized in that, The first impurity removal cylinder (221) further includes a plurality of first limiting holes (2214) and a plurality of second limiting holes (2215). The plurality of first limiting holes (2214) and the plurality of second limiting holes (2215) are both formed in the first cylinder body (2211). The first limiting holes (2214) and the second limiting holes (2215) are arranged along the moving direction of the first impurity pushing plate (2231). The first impurity pushing member (223) further includes a plurality of connecting plates (2233), a plurality of limiting plates (2234) and a plurality of limiting structures (2235). The plurality of connecting plates (2233) are respectively connected to one ends of the plurality of first push rods (2232) far away from the first impurity pushing plate (2231). The plurality of limiting plates (2234) are respectively connected to the plurality of connecting plates (2233). The plurality of limiting structures (2235) are respectively screwed to the plurality of limiting plates (2234) and are configured to be respectively limited in the plurality of first limiting holes (2214) in the first impurity removal state and are also configured to be respectively limited in the plurality of second limiting holes (2215) in the first impurity clearing state.

5. A method for removing impurities from an electrolyte purification and impurity removal device according to any one of claims 1-4, characterized in that, Comprising the following steps: Pumping the electrolyte out of the electrolytic cell (1); Pumping the electrolyte to the first impurity removal assembly (22) to separate metal impurities; Pumping the electrolyte to the second impurity removal assembly (23) to separate non-metal impurities; Pumping the electrolyte into the electrolytic cell (1).

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