Electrolyte purification and impurity removal device and method

Abstract

The invention provides an electrolyte purification and impurity removal device which is characterized in that an impurity removal pipeline is used for conveying electrolyte in an electrolytic tank, at least one first impurity removal assembly is installed at the electrolyte input end of the impurity removal pipeline and used for removing metal impurities in the electrolyte, and at least one second impurity removal assembly is installed at the electrolyte output end of the impurity removal pipeline and used for removing metal impurities in the electrolyte. And non-metal impurities in the electrolyte are removed. And the conveying mechanism is mounted between the impurity removal pipeline and the electrolytic tank. The invention further provides an impurity removal method of the electrolyte purification and impurity removal device. The impurity removal method comprises the following steps that the electrolyte is pumped out of the electrolytic tank; electrolyte is pumped to the first impurity removal assembly to separate metal impurities; the electrolyte is pumped to the second impurity removal assembly to separate non-metal impurities; and pumping the electrolyte into the electrolytic tank. According to the electrolyte purification and impurity removal device provided by the invention, metal impurities and non-metal impurities can be separated, the recovery difficulty of the metal impurities is greatly reduced, and the use convenience is improved.

Description

Technical Field

[0001] The present application relates to the field of electrolyte impurity separation equipment, and in particular to an electrolyte purification and impurity removal device and method. Background Art

[0002] Electrolyte is a liquid medium used in electrochemical processes. It can promote the transfer of charge and play a key role in electrochemical reactions. During the electrolysis process, the electrolyte will inevitably produce impurities, which will reduce the electrolysis efficiency, damage the equipment, and affect the product quality. Therefore, keeping the electrolyte pure is crucial to ensure the stability of the electrolysis process and the quality of the product. In the related art, a filter is usually used to filter the electrolyte. The filter separates the impurities from the electrolyte, which helps to keep the electrolyte pure. Electrolyte impurities are divided into metal impurities and non-metallic impurities. However, in the related art, a filter is usually used directly to filter metal impurities and non-metallic 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 the present 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 simultaneously filters metal impurities and non-metallic impurities, which increases the difficulty of recovering metal impurities.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide an electrolyte purification and impurity removal device, comprising: Electrolytic cell; An impurity removal mechanism, the impurity removal mechanism comprising 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-metallic impurities in the electrolyte; a conveying mechanism, the conveying mechanism being installed between the impurity removal pipeline and the electrolytic cell and being configured to pump the electrolyte from the electrolytic cell into the impurity removal pipeline, and further 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; The first impurity removal component includes a first impurity removal barrel, an electromagnetic structure and a first impurity pusher. The first impurity removal barrel is connected to the impurity removal pipeline and communicates with the impurity removal pipeline. The electromagnetic structure is installed on the first impurity removal barrel and is configured to absorb metal impurities in the electrolyte when power is turned on. The first impurity pusher is installed on the first impurity removal barrel and is configured to be able to move toward the first impurity removal barrel to push the metal impurities absorbed on the surface of the electromagnetic structure into the first impurity removal barrel.

[0005] 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 communicated 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 communicated 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, and 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.

[0006] Optionally, the first impurity pushing member includes a first impurity pushing plate and a plurality of first pushing rods, the first impurity pushing plate is sleeved on the outer periphery of the electromagnetic structure and is located in the impurity removal pipeline, and the plurality of first pushing rods are all connected to the first impurity pushing plate and are all penetrated through the first cylinder; The first impurity pushing member has a first impurity removing state in which the first impurity pushing plate is separated from the first cylinder, and also has a first impurity clearing state in which the first impurity pushing plate is in contact with the first cylinder.

[0007] Optionally, the first impurity removing cylinder further comprises a plurality of first limiting holes and a plurality of second limiting holes, the plurality of first limiting holes and the plurality of second limiting holes are all opened in the first cylinder body, and the first limiting holes and the second limiting holes are arranged along the moving direction of the first impurity pushing plate; The first impurity pusher also includes multiple connecting plates, multiple limiting plates and multiple limiting structures. The multiple connecting plates are respectively connected to the ends of the multiple first push rods away from the first impurity push plate, the multiple limiting plates are respectively connected to the multiple connecting plates, and the multiple limiting structures are respectively screwed to the multiple limiting plates, and are configured to be limited in the multiple first limiting holes in the first impurity removal state, and are also configured to be limited in the multiple second limiting holes in the first impurity clearing state.

[0008] Optionally, the second impurity removal component includes a filter, a second impurity removal barrel and a second impurity pusher, the filter is installed in the impurity removal pipe and is used to filter and collect non-metallic impurities in the electrolyte, the second impurity removal barrel is connected to the impurity removal pipe and communicates with the impurity removal pipe, the second impurity pusher is installed in the second impurity removal barrel and is configured to be able to move toward the second impurity removal barrel to push the non-metallic impurities collected by the filter into the second impurity removal barrel.

[0009] 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 communicated 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 communicated 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, and 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.

[0010] Optionally, the filter element includes a filter cartridge, a liquid inlet and an end cover. The filter cartridge is inserted into the impurity removal pipeline, and the axial direction is perpendicular to the electrolyte delivery direction. The liquid inlet is opened on the side of the filter cartridge facing the first impurity removal component, and the end cover is sealingly installed on the end of the filter cartridge away from the second cylinder.

[0011] Optionally, the second impurity pushing member includes a second push rod and a second impurity pushing plate, the second push rod is screwed to the second cylinder and is configured to move relative to the second cylinder after rotating relative to the second cylinder, the second impurity pushing plate is connected to one end of the second push rod, moves with the second push rod, and is located in the filter cylinder; The second impurity pushing member has a second impurity removing state in which the second impurity pushing plate is located in the filter cylinder away from the second cylinder body, and also has a second impurity clearing state in which the second impurity pushing plate is in contact with the second cylinder body.

[0012] The present application also provides an electrolyte purification and impurity removal method, comprising the following steps: pumping electrolyte from the electrolytic cell; Pumping the electrolyte to the first impurity removal component to separate the metal impurities; Pumping the electrolyte to the second impurity removal component to separate non-metallic impurities; Electrolyte is pumped into the electrolytic cell.

[0013] The beneficial effects of the electrolyte purification and impurity removal device provided in this application are: The electrolyte purification and impurity removal device provided by the present application, the first impurity removal component can separate metal impurities from the electrolyte, and the second impurity removal component can separate non-metallic impurities from the electrolyte. Compared with the relevant technology, in the impurity removal process, metal impurities and non-metallic impurities can be separated, which greatly reduces the difficulty of recovering metal impurities and helps to improve the convenience of use. In addition, with the cooperation of the conveying mechanism and the impurity removal pipeline, the electrolyte in the electrolytic cell can circulate, and the first impurity removal component and the second impurity removal component can continuously separate impurities from the electrolyte, and the impurity removal effect is good, which effectively guarantees 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, which is easy to use. Compared with the relevant technology, in the clearing process, it is possible to prevent impurities in the air from entering the impurity removal pipeline to cause the electrolyte to be contaminated, ensuring the purity of the electrolyte, and easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A three-dimensional diagram of an electrolyte purification and impurity removal device provided in an embodiment of the present application; Figure 2 A three-dimensional diagram of the internal structure of the electrolyte purification and impurity removal device provided in an embodiment of the present application from a first perspective; Figure 3 A stereoscopic diagram of the internal structure of the electrolyte purification and impurity removal device provided in an embodiment of the present application from a second perspective; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5 A third-angle internal structure perspective diagram of the electrolyte purification and impurity removal device provided in an embodiment of the present application; Figure 6 A flow chart of the impurity removal method of the electrolyte purification and impurity removal device provided in an embodiment of the present application.

[0016] Among them, the reference numerals in the figure are: 1. Electrolytic cell; 2. impurity removal mechanism; 21. impurity removal pipeline; 22. first impurity removal assembly; 221. first impurity removal cylinder; 2211. first cylinder body; 2212. first liquid inlet pipe; 2213. first liquid outlet pipe; 2214. first limit hole; 2215. second limit hole; 222. electromagnetic structure; 223. first impurity pusher; 2231. first impurity push plate; 2232. first push rod; 2233. connecting plate; 22 34. Limiting plate; 2235. Limiting structure; 23. Second impurity removal assembly; 231. Filter element; 2311. Filter cartridge; 2312. Liquid inlet; 2313. End cover; 232. Second impurity removal cartridge; 2321. Second cartridge; 2322. Second liquid inlet pipe; 2323. Second liquid outlet pipe; 233. Second impurity pusher; 2331. Second push rod; 2332. Second impurity pusher plate; 24. Observation window; 3. Conveying mechanism; 31. Output pipe; 32. First conveying pump; 33. First bending pipe; 34. Second bending pipe; 35. Second conveying pump; 36. Input pipe. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with 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.

[0018] It should be noted that when a component is referred to as being "mounted on", "fixed on" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. 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.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] like Figure 1 and Figure 2As shown, an embodiment of the present application provides an electrolyte purification and impurity removal device, including 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 transport 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-metallic 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 barrel 221, an electromagnetic structure 222 and a first impurity pusher 223. The first impurity removal barrel 221 is connected to the impurity removal pipe 21 and communicates with the impurity removal pipe 21. The electromagnetic structure 222 is installed on the first impurity removal barrel 221 and is configured to absorb metal impurities in the electrolyte when powered on. The first impurity pusher 223 is installed on the first impurity removal barrel 221 and is configured to be able to move toward the first impurity removal barrel 221 to push the metal impurities absorbed on the surface of the electromagnetic structure 222 into the first impurity removal barrel 221.

[0021] It should also be noted that the sources of metal impurities (iron, cobalt, nickel) in the electrolyte are: the raw materials of the electrolyte (such as solvents, electrolytes, etc.) may contain trace amounts of metal impurities. Electrolytic cells, pipes, valves and other production equipment may release metal ions due to corrosion or wear. Corrosion products on the electrode surface, electrolysis products, etc. may become metal impurities. Dust in the air, metal ions in water, etc. may also enter the electrolyte. The electrolyte may gradually accumulate metal impurities during the recycling process. Sources of non-metallic impurities in the electrolyte: Organic solvents (such as carbonate solvents) in the electrolyte may decompose at high temperatures or in an electrochemical environment to produce organic by-products. Additives (such as VC, LiPF6 decomposition products) may degrade during the electrolysis process to produce organic impurities. Grease 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 the corrosion process. Some additives may contain trace amounts of inorganic salts. Dust in the air may enter the electrolyte. Solid particles that are not completely dissolved during the production process may exist in the electrolyte. Fluoride, chloride, etc. may come from the preparation of the electrolyte or corrosion of production equipment. Ammonia, nitrite, etc. may come from by-products of the production process.

[0022] It should be noted that after the first impurity removal component 22 is used to separate the metal impurities from the electrolyte, the metal impurities adhere to the surface of the first impurity removal component 22. As the metal impurities accumulate, the separation effect of the first impurity removal component 22 is easily deteriorated, so 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 disassembled, 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 to its original position. The above method is used to easily cause impurities in the air to enter the pipeline, resulting in contamination of the electrolyte.

[0023] It should be noted 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. 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 limited here.

[0024] 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-metallic impurities from the electrolyte. Compared with the relevant technology, in the impurity removal process, metal impurities and non-metallic impurities can be separated, which greatly reduces the difficulty of recovering metal impurities and helps to improve the convenience of use. In addition, with the cooperation of the conveying mechanism 3 and the impurity removal pipeline 21, the electrolyte in the electrolytic cell 1 can circulate, and the first impurity removal component 22 and the second impurity removal component 23 can continuously separate impurities from the electrolyte, and the impurity removal effect is good, which effectively guarantees 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 relevant technology, in the clearing process, it is possible to prevent impurities in the air from entering the impurity removal pipeline 21 to cause the electrolyte to be contaminated, ensuring the purity of the electrolyte, and easy to clean.

[0025] Optionally, the electromagnetic structure 222 is configured as an electromagnet.

[0026] In one embodiment of the present application, see Figure 2The first impurity removing 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 removing pipeline 21 and communicates with the impurity removing pipeline 21. The first liquid inlet pipe 2212 and the first liquid outlet pipe 2213 are both 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.

[0027] In this way, the first liquid inlet switch and the first liquid outlet switch are used, and in the closed state, they can be enclosed with the first cylinder 2211 and the first impurity pusher 223 to form a relatively sealed space. In the open state, the external electrolyte can enter the first cylinder 2211, and with the cooperation of the first liquid outlet pipe 2213, the metal impurities in the first cylinder 2211 can be flushed out. With the cooperation of the first cylinder 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 cleared out under relatively sealed conditions to prevent the electrolyte from being contaminated, and the purity of the electrolyte is effectively guaranteed. In addition, it is convenient to separate the metal impurities from the impurity removal pipeline 21, and it is easy to use.

[0028] In one embodiment of the present application, please refer to Figure 2 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 pipeline 21. The plurality of first push rods 2232 are all connected to the first impurity push plate 2231 and are all penetrated through the first cylinder 2211. The first impurity pusher 223 has a first impurity removal state in which the first impurity push plate 2231 and the first cylinder 2211 are separated, and also has a first impurity removal state in which the first impurity push plate 2231 and the first cylinder 2211 are in contact.

[0029] In this way, a plurality of first push rods 2232 are used, so that the first impurity push plate 2231 can move along the electromagnetic structure 222, so that the first impurity pusher 223 can switch between the first impurity removal state and the first impurity clearing state. In the first impurity removal state, the electromagnetic structure 222 can separate metal impurities from the electrolyte. In the first impurity clearing state, metal impurities can be flushed out of the first cylinder 2211, and the adjustment is convenient.

[0030] In one embodiment of the present application, see Figures 2 to 4The first impurity removing barrel 221 also includes a plurality of first limiting holes 2214 and a plurality of second limiting holes 2215, and the plurality of first limiting holes 2214 and the plurality of second limiting holes 2215 are all opened in the first barrel 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.

[0031] The first impurity pusher 223 also 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 end of the plurality of first push rods 2232 away from the first impurity pusher 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.

[0032] In this way, 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 pusher 223 can be stably 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. In addition, the first limiting hole 2214, the second limiting hole 2215, the connecting plate 2233, the limiting plate 2234 and the limiting structure 2235 are all set to multiple, which helps to further improve the stability of the device during use. When the limiting structure 2235 is taken out of the first limiting hole 2214 or the second limiting hole 2215, the limiting of the limiting plate 2234 can be released, so that the first impurity pusher 223 can switch between the first impurity removal state and the first impurity clearing state, which is convenient for separating metal impurities from the electrolyte and the metal impurities from the impurity removal pipeline 21, which helps to improve the convenience of use.

[0033] Optionally, the first impurity pushing member 223 further includes a plurality of sealing rings, which are respectively sleeved on the outer circumferences of the plurality of first push rods 2232 and sealed between the first push rods 2232 and the first cylinder 2211 .

[0034] Such a configuration, using multiple sealing rings, can prevent the gap between the first push rod 2232 and the first barrel 2211 from causing impurities to contaminate the electrolyte, and can also prevent the electrolyte from overflowing from the gap between the first push rod 2232 and the first barrel 2211.

[0035] Optionally, the limiting structure 2235 is configured as a screw.

[0036] In one embodiment of the present application, see Figure 1 and Figure 5 The second impurity removal component 23 includes a filter 231, a second impurity removal barrel 232 and a second impurity pusher 233. The filter 231 is installed in the impurity removal pipe 21 and is used to filter and collect non-metallic impurities in the electrolyte. The second impurity removal barrel 232 is connected to the impurity removal pipe 21 and communicates with the impurity removal pipe 21. The second impurity pusher 233 is installed in the second impurity removal barrel 232 and is configured to be able to move toward the second impurity removal barrel 232 to push the non-metallic impurities collected by the filter 231 into the second impurity removal barrel 232.

[0037] With such arrangement, 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 the electrolyte to be contaminated, thereby ensuring the purity of the electrolyte and making cleaning convenient.

[0038] In one embodiment of the present application, please refer to Figure 1 and Figure 5 The second impurity removing 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 removing pipeline 21 and communicates with the impurity removing pipeline 21. The second liquid inlet pipe 2322 and the second liquid outlet pipe 2323 are both connected to the second cylinder body 2321 and communicate 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.

[0039] In this way, the second liquid inlet switch and the second liquid outlet switch are used, and in the closed state, they can be enclosed with the second cylinder 2321 and the second impurity pusher 233 to form a relatively sealed space. In the open state, the external electrolyte can enter the second cylinder 2321, and with the cooperation of the second liquid outlet pipe 2323, the non-metallic impurities in the second cylinder 2321 can be flushed out. With the cooperation of the second cylinder 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 out under relatively sealed conditions to prevent the electrolyte from being contaminated, and the purity of the electrolyte is effectively guaranteed. In addition, it is convenient to separate the non-metallic impurities from the impurity removal pipeline 21, and it is easy to use.

[0040] In one embodiment of the present application, see Figure 1 and Figure 5The filter element 231 includes a filter cartridge 2311, a liquid inlet 2312 and an end cover 2313. The filter cartridge 2311 is inserted into the impurity removal pipeline 21, and the axial direction is perpendicular to the electrolyte conveying 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 cover 2313 is sealed and installed on one end of the filter cartridge 2311 away from the second cylinder 2321.

[0041] In this way, by opening the liquid inlet 2312 on the filter cartridge 2311, after the non-metallic impurities in the electrolyte are separated, the non-metallic impurities are allowed to enter the filter cartridge 2311 as much as possible, which is convenient for the second impurity pusher 233 to push the non-metallic impurities into the second cylinder 2321, which helps to improve the convenience of use. With the end cover 2313, the filter cartridge 2311 can be detachably connected to the impurity removal pipeline 21, which is convenient for maintenance and replacement, and helps to improve the convenience of use. In addition, during use, the end of the filter cartridge 2311 away from the second cylinder 2321 can be sealed to prevent the electrolyte from leaking.

[0042] In one embodiment of the present application, see 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 2321 and is configured to move relative to the second cylinder 2321 after rotating relative to the second cylinder 2321. The second impurity push plate 2332 is connected to one end of the second push rod 2331, moves with the second push rod 2331, and is located in the filter cylinder 2311.

[0043] The second impurity pushing member 233 has a second impurity removing state in which the second impurity pushing plate 2332 is located on the filter cylinder 2311 away from the second cylinder body 2321 , and also has a second impurity clearing state in which the second impurity pushing plate 2332 is in contact with the second cylinder body 2321 .

[0044] In this arrangement, since the second push rod 2331 is screwed to the second cylinder 2321, the second impurity pusher 233 can be stably in the second impurity removal state or the second impurity clearing state, which helps to 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, which is convenient for separating non-metallic impurities from the electrolyte and for separating non-metallic impurities from the impurity removal pipe 21, which helps to improve the convenience of use.

[0045] Optionally, the impurity removal mechanism 2 further includes a plurality of observation windows 24 , which are all installed on the impurity removal pipeline 21 and are arranged one-to-one 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 components 22 and the number of the second impurity removal components 23 .

[0046] With such 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 pipe 21, and it is also convenient for the staff to observe the accumulation of non-metallic impurities in the filter cartridge 2311, so that the staff can separate the metal impurities and non-metallic impurities from the impurity removal pipe 21 in time, which helps to improve the convenience of use.

[0047] Optionally, the delivery structure includes an output pipe 31, a first delivery pump 32, a first bent pipe 33, a second bent pipe 34, a second delivery pump 35 and an input pipe 36. The output pipe 31 and the input pipe 36 are both installed in the electrolytic cell 1, the first delivery 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 delivery 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, and the second delivery pump 35 is installed between the second bent pipe 34 and the input pipe 36.

[0048] With such arrangement, with the cooperation of the output pipe 31, the first delivery pump 32, the first bent pipe 33, the second bent pipe 34, the second delivery 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.

[0049] The working principle of the electrolyte purification and impurity removal device provided in the present application is: when the device is used, 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, metal impurities can be separated from the electrolyte. After the metal impurities are separated, the electrolyte immediately passes through the second impurity removal component 23. Under the action of the second impurity removal component 23, non-metallic 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.

[0050] During the impurity removal process, the electromagnetic structure 222 is started, and when the electrolyte passes through the electromagnetic structure 222, the electromagnetic structure 222 can absorb metal impurities in the electrolyte. It should be noted that the electromagnetic structure 222 includes an electromagnetic body and an adsorption rod, the electromagnetic body is fixedly installed on the periphery of the impurity removal pipeline 21, and the adsorption rod is installed on the electromagnetic body and 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.

[0051] When the first impurity pusher 223 switches from the first impurity removal state to the first impurity clearing state, the staff rotates the limiting structure 2235 to take the limiting structure 2235 out of the first limiting hole 2214. After taking the limiting structure 2235 out of the first limiting hole 2214, the staff gradually moves away from the impurity removal pipeline 21 by driving the multiple limiting plates 2234. In this process, the multiple connecting plates 2233 and the 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 toward the first cylinder 2211, the first impurity push plate 2231 will push the metal impurities on the surface of the adsorption rod located in the impurity removal pipeline 21 into the first cylinder 2211 until the first impurity push plate 2231 covers the first cylinder 2211. After the first impurity push plate 2231 covers the first cylinder 2211, the first cylinder 2211 is in a relatively sealed state and is separated from the impurity removal pipeline 21. The staff cuts off the power to 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-moving state in the first cylinder 2211. Among them, the first liquid inlet pipe 2212 is connected to the 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 2211 through the first liquid inlet pipe 2212, and flushes the metal impurities in the first cylinder 2211 from the first liquid outlet pipe 2213. After flushing out the metal impurities, the staff closes the first liquid inlet switch and the first liquid outlet switch.

[0052] When the first impurity pusher 223 is switched from the first impurity clearing state to the first impurity removing state, the staff rotates the limiting structure 2235 to remove the limiting structure 2235 from the second limiting hole 2215. After the limiting structure 2235 is removed 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 pushing plate 2231 to reset through the multiple limiting plates 2234. After the reset is completed, the first impurity pusher 223 is switched to the first impurity removing state.

[0053] After the first impurity removal assembly 22 is used to separate the metal impurities from the electrolyte, the electrolyte is pumped to the filter 231. After the electrolyte passes through the filter 231, the filter 231 can separate the non-metallic impurities in the electrolyte.

[0054] When the second impurity pusher 233 is in the second impurity removal state, the electrolyte can enter the filter cartridge 2311 through the liquid inlet 2312 , and the filter cartridge 2311 can filter the electrolyte to separate non-metallic impurities in the electrolyte, and the non-metallic impurities are filtered into the filter cartridge 2311 .

[0055] When the second impurity pusher 233 switches from the second impurity removal state to the second impurity clearing state, the staff rotates the second push rod 2331. Since the second push rod 2331 is screwed to the second barrel 2321, the second push rod 2331 can move relative to the second barrel 2321. The second push rod 2331 drives the second impurity push plate 2332 to move toward the second barrel 2321 until the second impurity push plate 2332 covers one end of the second barrel 2321 close to the filter barrel 2311. In this process, under the push of the second impurity push plate 2332, the non-metallic impurities in the filter barrel 2311 are pushed into the second barrel 2321. Among them, the second liquid inlet pipe 2322 is connected to the external electrolyte storage container. The staff turns on the second liquid inlet switch and the second liquid outlet switch. The external electrolyte enters the second barrel 2321 through the second liquid inlet pipe 2322, and flushes the non-metallic impurities in the second barrel 2321 out of the second liquid outlet pipe 2323. After flushing out the non-metallic impurities, the staff closes the second liquid inlet switch and the second liquid outlet switch.

[0056] When the second impurity pushing member 233 is switched from the second impurity clearing state to the second impurity removing state, the staff 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 is switched to the second impurity removing state.

[0057] like Figure 1 and Figure 6 As shown, the present application also provides an impurity removal method for an electrolyte purification and impurity removal device, comprising the following steps: Step S1: Pumping the electrolyte out of the electrolytic cell 1.

[0058] Step S2: Pump the electrolyte to the first impurity removal assembly 22 to separate metal impurities.

[0059] Step S3: Pump the electrolyte to the second impurity removal component 23 to separate non-metallic impurities.

[0060] Step S4: pumping the electrolyte into the electrolytic cell 1 .

[0061] The impurity removal method of the electrolyte purification and impurity removal device provided in the present application can separate metal impurities and non-metallic impurities separately, greatly reducing the difficulty of recycling metal impurities. In addition, it can realize cyclic impurity removal and has a good separation effect.

[0062] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall 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 of the present application should be included in the protection scope of the present application.

Claims

1. An electrolyte purification and impurity removal device, characterized in that: include: 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 to transport the electrolyte in the electrolytic cell (1), at least one first impurity removal component (22) being installed at the electrolyte input end of the impurity removal pipeline (21) and being used to remove metal impurities in the electrolyte, and at least one second impurity removal component (23) being installed at the electrolyte output end of the impurity removal pipeline (21) and being used to remove non-metallic impurities in the electrolyte; a conveying mechanism (3), the conveying mechanism (3) being installed between the impurity removal pipeline (21) and the electrolytic cell (1), and being configured to pump the electrolyte from the electrolytic cell (1) into the impurity removal pipeline (21), and also being configured to pump the electrolyte into the electrolytic cell (1) after the electrolyte has passed through the first impurity removal component (22) and the second impurity removal component (23) in sequence; The first impurity removal component (22) comprises a first impurity removal barrel (221), an electromagnetic structure (222) and a first impurity pusher (223); the first impurity removal barrel (221) is connected to the impurity removal pipe (21) and communicates with the impurity removal pipe (21); the electromagnetic structure (222) is mounted on the first impurity removal barrel (221) and is configured to absorb metal impurities in the electrolyte when powered on; the first impurity pusher (223) is mounted on the first impurity removal barrel (221) and is configured to be able to move toward the first impurity removal barrel (221) so as to push the metal impurities absorbed on the surface of the electromagnetic structure (222) into the first impurity removal barrel (221).

2. The electrolyte purification and impurity removal device according to claim 1, characterized in that: 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 cylinder body (2211) is connected to the impurity removal pipeline (21) and communicates with the impurity removal pipeline (21); the first liquid inlet pipe (2212) and the first liquid outlet pipe (2213) are both 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).

3. The electrolyte purification and impurity removal device according to claim 2, characterized in that: The first impurity pushing member (223) comprises a first impurity pushing plate (2231) and a plurality of first pushing rods (2232); the first impurity pushing plate (2231) is sleeved on the outer periphery of the electromagnetic structure (222) and is located in the impurity removal pipeline (21); the plurality of first pushing rods (2232) are all connected to the first impurity pushing plate (2231) and are all inserted into the first cylinder (2211); The first impurity pushing member (223) has a first impurity removal state in which the first impurity pushing plate (2231) and the first cylinder (2211) are separated, and also has a first impurity clearing state in which the first impurity pushing plate (2231) and the first cylinder (2211) are in contact.

4. The electrolyte purification and impurity removal device according to claim 3, characterized in that: The first impurity removing cylinder (221) further comprises 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 all opened on 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); The first impurity pushing member (223) further comprises a plurality of connecting plates (2233), a plurality of limiting plates (2234) and a plurality of limiting structures (2235), wherein the plurality of connecting plates (2233) are respectively connected to one end 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 removing state, and are also configured to be respectively limited in the plurality of second limiting holes (2215) in the first impurity clearing state.

5. The electrolyte purification and impurity removal device according to claim 1, characterized in that: The second impurity removal component (23) comprises a filter (231), a second impurity removal barrel (232) and a second impurity pusher (233); the filter (231) is mounted on the impurity removal pipe (21) and is used to filter and collect non-metallic impurities in the electrolyte; the second impurity removal barrel (232) is connected to the impurity removal pipe (21) and communicates with the impurity removal pipe (21); the second impurity pusher (233) is mounted on the second impurity removal barrel (232) and is configured to be able to move toward the second impurity removal barrel (232) so as to push the non-metallic impurities collected by the filter (231) into the second impurity removal barrel (232).

6. The electrolyte purification and impurity removal device according to claim 5, characterized in that: 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) is connected to the impurity removal pipeline (21) and communicates with the impurity removal pipeline (21); the second liquid inlet pipe (2322) and the second liquid outlet pipe (2323) are both connected to the second cylinder body (2321) and communicate 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).

7. The electrolyte purification and impurity removal device according to claim 6, characterized in that: The filter element (231) comprises a filter cartridge (2311), a liquid inlet (2312) and an end cover (2313); the filter cartridge (2311) is inserted into the impurity removal pipeline (21) and its axial direction is perpendicular to the electrolyte conveying direction; the liquid inlet (2312) is provided on a side of the filter cartridge (2311) facing the first impurity removal component (22); and the end cover (2313) is sealingly mounted on an end of the filter cartridge (2311) away from the second cylinder (2321).

8. The electrolyte purification and impurity removal device according to claim 7, characterized in that: The second impurity pushing member (233) comprises a second push rod (2331) and a second impurity pushing plate (2332); the second push rod (2331) is screwed to the second cylinder (2321) and is configured to move relative to the second cylinder (2321) after rotating relative to the second cylinder (2321); the second impurity pushing plate (2332) is connected to one end of the second push rod (2331) and moves with the second push rod (2331), and is located in the filter cylinder (2311); The second impurity pushing member (233) has a second impurity removal state in which the second impurity pushing plate (2332) is located on the filter cylinder (2311) away from the second cylinder body (2321), and also has a second impurity clearing state in which the second impurity pushing plate (2332) is in contact with the second cylinder body (2321).

9. A method for removing impurities from an electrolyte purification and impurity removal device as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Pumping the electrolyte out of the electrolytic cell (1); Pumping the electrolyte to the first impurity removal component (22) to separate metal impurities; Pumping the electrolyte to the second impurity removal component (23) to separate non-metallic impurities; The electrolyte is pumped into the electrolytic cell (1).

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