A phosphoric acid treatment and cleaning device for formation of a foil

Abstract

The present application relates to the technical field of electrode foil manufacturing equipment for aluminum electrolytic capacitor, and proposes a phosphoric acid treatment and cleaning device for formed foil production, which comprises two groups of input and output guides, a phosphoric acid processor, a phosphoric acid scraper, a first cleaner, at least three groups of second cleaners and a dryer; the phosphoric acid scraper is arranged after the phosphoric acid processor; after the formed foil completes the phosphoric acid treatment, it does not directly enter the cleaner, but first passes through the lower liquid guide assembly to guide the phosphoric acid liquid carried on the surface, and then passes through the liquid scraping assembly to elastically scrape the residual phosphoric acid liquid film, so as to reduce the acid amount of the formed foil before entering the cleaning section, reduce the acid load of the cleaning liquid, solve the problems that the formed foil is easy to carry the phosphoric acid liquid on the surface and in the pores after the phosphoric acid treatment, if directly entering the cleaning section, it is easy to cause the acid load of the cleaning liquid to increase, the consumption of the cleaning liquid to increase, the residual acid in the pores to be insufficiently released, and the residual acid to easily appear re- infiltration in the subsequent drying process.

Description

Technical Field

[0001] This invention relates to the technical field of electrode foil manufacturing equipment for aluminum electrolytic capacitors, and more specifically, to a phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil. Background Technology

[0002] Formed foil is an important material in aluminum electrolytic capacitors. It typically requires processes such as etching, formation, post-treatment, cleaning, and drying to form an oxide film structure on the aluminum foil surface that meets electrical performance requirements. Phosphoric acid treatment is a common post-treatment method in the production of formed foil, which can affect the oxide film state on the surface of the formed foil and help improve its stability during subsequent use.

[0003] Existing phosphoric acid treatment equipment for electrolytic foil typically includes a phosphoric acid treatment tank and a cleaning tank located after the treatment tank. The electrolytic foil enters the treatment tank via guide rollers, comes into contact with the phosphoric acid solution, and then directly enters the subsequent cleaning tank. Residual phosphoric acid solution on the surface of the foil is removed through immersion, spraying, or multi-stage washing. While this type of equipment can complete the basic phosphoric acid treatment and cleaning process, it still has certain shortcomings in continuous production.

[0004] First, when the electrolytic foil is output from the phosphoric acid treatment solution, its surface carries a significant amount of phosphoric acid. If the electrolytic foil directly enters the cleaning tank, a large amount of phosphoric acid will be carried into the cleaning solution, causing the acid load of the cleaning solution to rise rapidly. This results in a rapid increase in the conductivity of the cleaning solution, requiring frequent water replenishment, water replacement, or drainage, thus increasing water consumption and waste liquid treatment pressure.

[0005] Secondly, the surface of the formed foil typically has corrosion pores, pits, and oxide film microstructures. Phosphoric acid treatment solution not only adheres to the surface of the formed foil but may also remain inside the pores or microstructures. Ordinary spraying or static immersion mainly acts on the liquid film on the surface of the formed foil, and has limited effect on releasing residual phosphoric acid solution retained in the pores. This can easily result in a situation where the surface has been cleaned but acid solution remains in the pores.

[0006] Furthermore, the phosphoric acid solution remaining in the pores or microstructures may seep back onto the surface of the formed foil during subsequent transportation, extrusion, or drying processes, causing problems such as localized acid backflow, incomplete cleaning, acid spots or uneven residues on the surface after drying, which in turn affects the consistency of the formed foil product and its stability in subsequent use.

[0007] Furthermore, while some existing equipment incorporates scrapers, squeezing rollers, or spray structures after the phosphoric acid treatment tank to reduce the amount of liquid on the surface of the formed foil, rigid scraping structures can easily cause scratch damage to the thin oxide film on the surface of the formed foil. Simple squeezing or scraping primarily targets the free liquid on the surface, offering limited help in releasing residual acid from the pores. Although conventional multi-stage cleaning can further reduce the concentration of residual liquid, if the acid load at the front end is not reduced and the residual acid in the pores is not sufficiently released, subsequent cleaning stages will still bear a high acid load, limiting both cleaning efficiency and cleaning stability. Summary of the Invention

[0008] The purpose of this invention is to provide a phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil, in order to solve the problems that existing electrolytic foils easily carry phosphoric acid solution on their surface and in their pores after phosphoric acid treatment. If the foils are directly introduced into the cleaning section, it is easy to cause an increase in the acid load of the cleaning solution, an increase in the consumption of the cleaning solution, insufficient release of residual acid in the pores, and the easy occurrence of residual acid backflow during the subsequent drying process.

[0009] The technical solution of the present invention is as follows: a phosphoric acid treatment and cleaning device for the production of electrolytic foil, comprising two sets of input / output guides, a phosphoric acid processor, a phosphoric acid scraper, a first cleaner, at least three sets of second cleaners, and a dryer; The phosphoric acid processor, the phosphoric acid scraper, the first cleaner, at least three sets of the second cleaners, and the dryer are arranged sequentially along the foil forming direction, and the two sets of input / output guides are respectively disposed at the input end of the phosphoric acid processor and the output end of the dryer. The phosphoric acid processor includes a guiding assembly for contacting the formed foil with the phosphoric acid treatment liquid and continuously conveying the formed foil; the phosphoric acid scraper includes a pressure guiding assembly for downward guiding the phosphoric acid liquid carried by the formed foil and a scraping assembly for elastically scraping off residual phosphoric acid liquid; the first cleaner includes a vibration assembly for generating a vibration cleaning effect on the formed foil and a turbulence output pipe for forming cleaning turbulence; at least three sets of second cleaners are used to perform step-by-step spray cleaning on the formed foil after being treated by the first cleaner; and the dryer is used to remove liquid and dry the cleaned formed foil.

[0010] As a preferred embodiment of the present invention, the input / output guide includes a first mounting frame, a top guide roller, a cylinder, a second mounting frame, a linear guide roller, and a side guide plate; the top guide roller is rotatably mounted on the first mounting frame, the second mounting frame is connected to the output end of the cylinder, the linear guide roller is rotatably mounted inside the second mounting frame, and the side guide plate is mounted on the inner wall of the second mounting frame to tension, guide, and side limit the formed foil.

[0011] As a preferred embodiment of the present invention, the phosphoric acid processor includes a phosphoric acid treatment tank, a first circulation pump, a first three-way valve, a first replenishment valve, a first tension drive roller, and the guide assembly; the two first tension drive rollers are respectively disposed at the top of both ends of the phosphoric acid treatment tank, the first circulation pump and the first three-way valve are both connected to the phosphoric acid treatment tank, and the first replenishment valve is connected to the first three-way valve to circulate and replenish the phosphoric acid treatment solution in the phosphoric acid treatment tank.

[0012] As a preferred embodiment of the present invention, the guiding assembly includes a first drive motor, a plurality of porous conveying rollers, a drive chain, and an auxiliary bearing; the plurality of porous conveying rollers are spaced apart in the phosphoric acid treatment tank along the running direction of the formed foil, adjacent porous conveying rollers are connected by the drive chain, and at least one porous conveying roller is connected to the first drive motor, so that the formed foil can form a continuous and stable phosphoric acid treatment path in the phosphoric acid treatment tank.

[0013] In a preferred embodiment of the present invention, the phosphoric acid scraper includes a scraping treatment tank, an output valve, a second tension roller, the downward pressure guiding liquid assembly, a conveyor, and the scraping assembly; two second tension rollers are respectively disposed at the top of both ends of the scraping treatment tank, two downward pressure guiding liquid assemblies are disposed opposite each other in the scraping treatment tank, the conveyor is disposed between the two downward pressure guiding liquid assemblies, at least two sets of scraping assemblies are disposed opposite each other in the scraping treatment tank, and the output valve is connected to the scraping treatment tank to discharge or recover the phosphoric acid liquid guided by the downward pressure guiding liquid assembly and the scraping assembly.

[0014] In a preferred embodiment of the present invention, the downward pressure liquid guiding assembly includes a mounting bracket, a guide plate, a first elastic component, and a liquid guiding roller; the mounting bracket is disposed inside the scraping treatment box, the guide plate is movably disposed on the mounting bracket, the first elastic component is connected between the mounting bracket and the guide plate, and the liquid guiding roller is rotatably disposed on the mounting bracket; the guide plate and the liquid guiding roller cooperate to form a liquid guiding path for the phosphoric acid solution on the surface of the formed foil to flow downward.

[0015] As a preferred embodiment of the present invention, the conveyor includes opposing rotating rollers, a transmission gear, a conveyor chain, and a second transmission motor; the opposing rotating rollers arranged opposite each other are driven by the transmission gear, and the opposing rotating rollers located on the same side are connected by the conveyor chain; at least one of the opposing rotating rollers is driven by the second transmission motor to form a clamping and conveying effect on the chemically formed foil.

[0016] In a preferred embodiment of the present invention, the scraping assembly includes a scraper frame, a semi-circular blade, a first torsion spring, a pressure roller, a guide slide plate, a straight shaft, a second elastic component, a semi-circular scraper, and a second torsion spring. The semi-circular blade is rotatably mounted on the scraper frame via the first torsion spring, the pressure roller is rotatably mounted on the semi-circular blade, the guide slide plate is slidably mounted within the scraper frame, the straight shaft is mounted on the guide slide plate and cooperates with the second elastic component, and the semi-circular scraper is rotatably mounted on the guide slide plate via the second torsion spring, so that the pressure roller and the semi-circular scraper can act on the surface of the formed foil in an elastically yielding state.

[0017] In a preferred embodiment of the present invention, the first cleaner includes a first cleaning tank, a second circulating pump, a second three-way valve, a second replenishing valve, the turbulence output pipe, a third tensioning roller, a conveying assembly, and the vibration assembly; the two third tensioning rollers are respectively disposed at the top of both ends of the first cleaning tank, the conveying assembly is disposed inside the first cleaning tank, the vibration assembly is disposed inside the first cleaning tank and located on the running path of the formed foil, the turbulence output pipe is disposed inside the first cleaning tank and communicates with the second three-way valve, the second replenishing valve is communicated with the second three-way valve, and the second circulating pump is communicated with the first cleaning tank, so that the cleaning fluid can circulate in the first cleaning tank and form turbulence cleaning on the formed foil.

[0018] In a preferred embodiment of the present invention, the conveying assembly includes a conveying roller, a third drive motor, and a conveying chain. A plurality of the conveying rollers are connected via the conveying chain, and at least one of the conveying rollers is connected to the third drive motor. The vibration assembly includes a vibration frame, a guide slider, a third elastic component, a vibration motor, and a transfer roller. The vibration frame is slidably disposed within the first cleaning tank via the guide slider. The third elastic component is connected between the vibration frame and the first cleaning tank. A plurality of transfer rollers are rotatably disposed within the vibration frame. The vibration motor is disposed on the vibration frame, so that the transfer rollers vibrate the formed foil passing through the first cleaning tank.

[0019] In a preferred embodiment of the present invention, the second cleaner includes a second cleaning tank, a connecting valve, a conductivity detector, a fourth tension roller, a conveying assembly, and a cleaning assembly; two of the fourth tension rollers are respectively disposed at the top of both ends of the second cleaning tank, the connecting valve is connected to the second cleaning tank, adjacent second cleaners are connected through the connecting valve, and the conductivity detector is disposed inside the second cleaning tank; the conveying assembly includes three conveying shafts arranged in an A-shape, a fourth drive motor, and a conveyor belt chain, the three conveying shafts are connected by the conveyor belt chain, and at least one conveying shaft is connected by the fourth drive motor; the cleaning assembly includes a cleaning support, a main pipe, a water distribution pipe, and conical spray heads, the main pipe is disposed on the cleaning support, and a plurality of conical spray heads are connected to the main pipe through the water distribution pipe to spray cleaning liquid onto the formed foil.

[0020] In a preferred embodiment of the present invention, the dryer includes a drying chamber, a liquid outlet valve, a guide shaft, a liquid removal assembly, and a drying assembly; the guide shaft is disposed at the input end of the drying chamber, the liquid outlet valve is connected to the drying chamber, and the liquid removal assembly is disposed inside the drying chamber and located in front of the drying assembly; the liquid removal assembly includes a liquid removal bracket, a sliding frame, a first elastic element, a rotating roller, a liquid removal plate, an inclined hinge plate, and a second elastic element; the sliding frame is slidably disposed within the liquid removal bracket, the first elastic element is connected between the sliding frame and the liquid removal bracket, the rotating roller is rotatably disposed on the sliding frame, the liquid removal plate is movably connected to the liquid removal bracket through the inclined hinge plate, and the second elastic element is connected between the inclined hinge plate and the liquid removal bracket; the drying assembly includes an air knife bracket, an air knife body, and a heater; the air knife body is disposed inside the drying chamber through the air knife bracket, and the heater is disposed inside the drying chamber.

[0021] The working principle and beneficial effects of this invention are as follows: 1. In this invention, a phosphoric acid scraper is set after the phosphoric acid processor. After the phosphoric acid treatment is completed, the formed foil does not directly enter the cleaner. Instead, the phosphoric acid liquid on the surface is first guided by the downward liquid guiding component, and then the residual phosphoric acid liquid film is elastically scraped off by the scraping component, thereby reducing the amount of acid carried by the formed foil before entering the cleaning section and reducing the acid load of the cleaning solution.

[0022] 2. The scraping assembly of the present invention forms an elastic contact structure through a pressure roller, a semi-circular scraper, a first torsion spring, a second torsion spring, and a second elastic component, so that the semi-circular scraper can act on the surface of the formed foil in an elastic yielding state, which can reduce the residual phosphoric acid liquid on the surface and reduce the risk of damage to the oxide film on the surface of the formed foil caused by rigid scraping.

[0023] 3. The present invention provides a vibration component and a turbulence output pipe in the first cleaner. The vibration component can cause the formed foil to vibrate in the cleaning solution through the vibration frame, the transfer roller and the vibration motor, so as to promote the release of residual phosphoric acid solution retained in the pores, pits and oxide film microstructure of the formed foil. The turbulence output pipe can form a cleaning turbulence near the formed foil, so as to carry the released residual acid away from the surface of the formed foil in time, thereby improving the release of residual acid in the pores and the cleaning effect.

[0024] 4. The present invention provides at least three sets of second cleaners, which enable the formed foil to continue to be sprayed cleaned in stages after the residual acid release cleaning, thereby gradually reducing the acid and ion residues on the surface of the formed foil. At the same time, the second cleaner is equipped with a conductivity detector to facilitate monitoring of the cleaning solution status and improve the controllability of the continuous cleaning process.

[0025] 5. The dryer of the present invention adopts a process of first removing liquid and then drying. The liquid removal component first removes the residual cleaning liquid on the surface of the formed foil by rotating rollers and dehydration plate, and then the air knife body and heater are used for drying. This can reduce the drying load, reduce surface water stains, and improve the consistency of the output state of the formed foil.

[0026] 6. This invention, through the cooperation of input and output guides, tension rollers, and multiple sets of transmission and conveying structures, enables the electrolytic foil to maintain continuous and stable operation during phosphoric acid treatment, acid scraping, residual acid release cleaning, step-by-step spray cleaning, and liquid removal and drying processes, thus making it suitable for continuous electrolytic foil production lines. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the input / output guide of the present invention; Figure 4 This is a schematic diagram of the overall structure of the phosphate processor of the present invention; Figure 5 This is a schematic diagram of the internal transmission structure of the phosphate processor of the present invention; Figure 6 This is a schematic diagram of the overall structure of the phosphoric acid scraper of the present invention; Figure 7 This is a schematic diagram of the transmission structure of the phosphate scraper of the present invention; Figure 8 This is a schematic diagram of the overall structure of the downward pressure fluid guiding component of the present invention; Figure 9 This is a schematic diagram of the overall structure of the scraping component of the present invention; Figure 10This is a bottom view of the overall structure of the scraping assembly of the present invention; Figure 11 This is a schematic diagram of the overall structure of the first cleaner of the present invention; Figure 12 This is a schematic diagram of the internal structure of the first cleaner of the present invention; Figure 13 This is a schematic diagram of the overall structure of the vibration assembly of the present invention; Figure 14 This is a schematic diagram of the overall structure of the second cleaner of the present invention; Figure 15 This is a schematic diagram of the internal structure of the second cleaner of the present invention; Figure 16 This is a schematic diagram of the overall structure of the dryer of the present invention; Figure 17 This is a schematic diagram of the internal structure of the dryer of the present invention; Figure 18 This is a schematic diagram of the overall structure of the liquid removal component of the present invention; Figure 19 This is a schematic diagram of the transmission structure of the liquid removal component of the present invention.

[0029] In the diagram: 1. Input / output guide; 11. First mounting bracket; 12. Top guide roller; 13. Cylinder; 14. Second mounting bracket; 15. Linear guide roller; 16. Side guide plate; 2. Phosphoric acid processor; 21. Phosphoric acid processing tank; 22. First circulating pump; 23. First three-way valve; 24. First replenishment valve; 25. First tension drive roller; 26. Guide assembly; 261. First drive motor; 262. Perforated conveyor roller; 263. Drive chain; 264. Auxiliary bearing; 3. Phosphoric acid scraper; 31. Scraping treatment box; 32. Output valve; 33. Second tension roller; 34. Downward liquid guiding assembly; 341. Mounting bracket; 342. Guide plate; 343. First elastic component; 344. Liquid guiding roller; 35. Conveyor; 351. Opposing rotating roller; 352. Transmission gear; 353. Conveyor chain; 354. Second drive motor; 36. Scraping assembly; 361. Scraper frame; 362. Semi-arc blade; 363. First torsion spring; 364. Pressure roller; 365. Guide slide plate; 366. Straight shaft; 367. Second elastic component; 368. Semi-arc scraper; 369. Second torsion spring; 4. First washer; 41. First cleaning tank; 42. Second circulating pump; 43. Second three-way valve; 44. Second replenishing valve; 45. Turbulence output pipe; 46. Third tension roller; 47. Conveying assembly; 471. Conveying roller; 472. Third drive motor; 473. Conveying chain; 48. Vibration assembly; 481. Vibrating frame; 482. Guide slider; 483. Third elastic assembly; 484. Vibrating motor; 485. Transfer roller; 5. Second washer; 51. Second cleaning tank; 52. Connecting valve; 53. Conductivity detector; 54. Fourth tension roller; 55. Conveying assembly; 551. Conveying shaft; 552. Fourth drive motor; 553. Conveyor belt chain; 56. Cleaning assembly; 561. Cleaning support; 562. Main pipe; 563. Branch pipe; 564. Conical spray head; 6. Dryer; 61. Drying chamber; 62. Liquid outlet valve; 63. Guide shaft; 64. Liquid removal assembly; 641. Liquid removal bracket; 642. Sliding frame; 643. First elastic device; 644. Rotating roller; 645. Liquid removal plate; 646. Inclined hinge plate; 647. Second elastic device; 65. Drying assembly; 651. Air knife bracket; 652. Air knife body; 653. Heater. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Example like Figures 1-19 As shown, the present invention provides a phosphoric acid treatment and cleaning device for the production of electrolytic foil. It is mainly used for phosphoric acid treatment, acid reduction, residual acid release cleaning, step-by-step spray cleaning, and drying of electrolytic foil in continuous production. This device does not simply feed the electrolytic foil sequentially into the phosphoric acid tank and the cleaning tank. Instead, after phosphoric acid treatment, a dedicated phosphoric acid scraper 3 is installed to reduce the acid content per unit area of ​​the electrolytic foil before it enters the cleaning section. In the subsequent first cleaner 4, vibration and turbulence promote the release of residual phosphoric acid solution retained in the pores, pits, and oxide film microstructure of the electrolytic foil. Then, step-by-step spray cleaning is performed by at least three sets of second cleaners 5. This reduces the cleaning load caused by the direct entry of phosphoric acid solution into the cleaning section and improves the release and removal of residual acid from the pores.

[0032] This invention includes two sets of input / output guides 1, a phosphoric acid processor 2, a phosphoric acid scraper 3, a first cleaner 4, at least three sets of second cleaners 5, and a dryer 6. The phosphoric acid processor 2, phosphoric acid scraper 3, first cleaner 4, at least three sets of second cleaners 5, and dryer 6 are arranged sequentially along the direction of the formed foil's movement. The two sets of input / output guides 1 are respectively located at the input end of the phosphoric acid processor 2 and the output end of the dryer 6, ensuring that the formed foil maintains a stable guiding state before entering the phosphoric acid processor 2 and after leaving the dryer 6.

[0033] The formed foil first enters the input / output guide 1 located at the foil inlet end. The input / output guide 1 includes a first mounting frame 11, a top guide roller 12, a cylinder 13, a second mounting frame 14, a linear guide roller 15, and side guide plates 16. The first mounting frame 11 is used to fix the top guide roller 12, which is rotatably mounted on the first mounting frame 11. After the formed foil passes over the top guide roller 12, it forms an inlet angle suitable for entering the phosphoric acid processor 2. The second mounting frame 14 is connected to the output end of the cylinder 13, which can drive the second mounting frame 14 to move. The linear guide roller 15 is rotatably mounted inside the second mounting frame 14. When the formed foil passes through the linear guide roller 15, the linear guide roller 15 provides support and guidance for the formed foil. The side guide plates 16 are disposed on the inner wall of the second mounting frame 14 and located on both sides in the width direction of the formed foil to limit the lateral displacement of the formed foil. By adjusting the position of the second mounting bracket 14 by the cylinder 13, the support position of the linear guide roller 15 on the chemically formed foil can be changed, so that the chemically formed foil is in a taut, straight and not easily deviated state before entering the phosphoric acid processor 2.

[0034] The formed foil, guided by the input / output guide 1, enters the phosphoric acid processor 2. The phosphoric acid processor 2 includes a phosphoric acid treatment tank 21, a first circulation pump 22, a first three-way valve 23, a first replenishment valve 24, a first tension drive roller 25, and a guide assembly 26. The phosphoric acid treatment tank 21 contains the phosphoric acid treatment solution. Two first tension drive rollers 25 are respectively located at the top of both ends of the phosphoric acid treatment tank 21. The first tension drive roller 25 at the front end guides the formed foil into the phosphoric acid treatment tank 21, while the first tension drive roller 25 at the rear end guides the phosphoric acid-treated formed foil out of the phosphoric acid treatment tank 21. The first tension drive rollers 25 maintain the tension of the formed foil before and after entering and exiting the phosphoric acid treatment solution, preventing the formed foil from becoming loose, wrinkled, or partially floating due to the resistance of the phosphoric acid treatment solution.

[0035] A guide assembly 26 is installed inside the phosphoric acid processing tank 21. The guide assembly 26 includes a first drive motor 261, a plurality of porous conveying rollers 262, a drive chain 263, and an auxiliary bearing 264. The plurality of porous conveying rollers 262 are arranged at intervals inside the phosphoric acid processing tank 21 along the running direction of the formed foil. The ends of the porous conveying rollers 262 are rotatably supported by the auxiliary bearings 264. Adjacent porous conveying rollers 262 are connected by a drive chain 263. At least one porous conveying roller 262 is connected to the first drive motor 261.

[0036] When the first drive motor 261 operates, it drives the porous conveyor roller 262 connected to it to rotate. This porous conveyor roller 262 then drives other porous conveyor rollers 262 to rotate synchronously via the transmission chain 263. After the formed foil enters the phosphoric acid treatment tank 21, it runs continuously along a predetermined path within the phosphoric acid treatment tank 21 under the support and conveying action of the porous conveyor rollers 262, and comes into contact with the phosphoric acid treatment solution during operation. The porous conveyor rollers 262 have a porous structure, allowing the phosphoric acid treatment solution to pass through or flow around the porous conveyor rollers 262, reducing the obstruction of the phosphoric acid treatment solution flow field by the rollers, and ensuring that both sides of the formed foil can fully contact the phosphoric acid treatment solution. Thus, the phosphoric acid processor 2 can perform stable phosphoric acid treatment on the surface of the formed foil in a continuous foil-feeding state.

[0037] A first circulation pump 22, a first three-way valve 23, and a first replenishment valve 24 are installed on one side of the phosphoric acid treatment tank 21. The first circulation pump 22 is connected to the phosphoric acid treatment tank 21 and is used to circulate the phosphoric acid treatment solution within the tank 21 to reduce local concentration and temperature differences in the phosphoric acid treatment solution. The first three-way valve 23 is connected to the phosphoric acid treatment tank 21, and the first replenishment valve 24 is connected to the first three-way valve 23. The first replenishment valve 24 is used to replenish phosphoric acid treatment solution or replenishment solution to the first three-way valve 23, and the first three-way valve 23 is used to introduce replenishment solution and circulating solution into the phosphoric acid treatment tank 21. Through the above structure, the phosphoric acid treatment solution in the phosphoric acid treatment tank 21 can maintain a circulating and replenishing state, avoiding insufficient phosphoric acid treatment solution volume or fluctuations in treatment status due to prolonged treatment.

[0038] After phosphoric acid treatment, the formed foil exits from the phosphoric acid processor 2 and enters the phosphoric acid scraper 3. The phosphoric acid scraper 3 is located between the phosphoric acid processor 2 and the first cleaner 4. This positional relationship is one of the important processing logics of this invention: after phosphoric acid treatment, the surface and pores of the formed foil will carry a certain amount of phosphoric acid solution. If it directly enters the cleaning section, the acid load of the first cleaner 4 and the second cleaner 5 will increase significantly. Therefore, this invention first uses the phosphoric acid scraper 3 after the phosphoric acid processor 2 to guide and elastically scrape off the phosphoric acid solution carried out by the formed foil, so as to reduce the amount of acid before entering the cleaning section.

[0039] The phosphoric acid scraper 3 includes a scraping treatment tank 31, an output valve 32, a second tension roller 33, a downward liquid guiding assembly 34, a conveyor 35, and a scraping assembly 36. The scraping treatment tank 31 forms a scraping treatment space for the formed foil to pass through. The output valve 32 is located on one side of the scraping treatment tank 31 and communicates with the interior of the tank, used to discharge or recover the phosphoric acid solution collected within the tank. Two second tension rollers 33 are respectively located at the top of both ends of the scraping treatment tank 31. The front second tension roller 33 receives the formed foil from the phosphoric acid processor 2, and the rear second tension roller 33 guides the scraped formed foil to the first cleaner 4.

[0040] After the formed foil enters the scraping treatment box 31, it first passes through the downward liquid guiding assembly 34. The downward liquid guiding assembly 34 includes a mounting bracket 341, a guide plate 342, a first elastic component 343, and a liquid guiding roller 344. The mounting bracket 341 is disposed inside the scraping treatment box 31, the guide plate 342 is movably disposed on the mounting bracket 341, the first elastic component 343 is connected between the mounting bracket 341 and the guide plate 342, and the liquid guiding roller 344 is rotatably disposed on the mounting bracket 341. A liquid guiding path is formed between the guide plate 342 and the liquid guiding roller 344. The phosphoric acid solution carried on the surface of the formed foil is guided downward at this liquid guiding path and flows into the bottom of the scraping treatment box 31. The first elastic component 343 enables the guide plate 342 to elastically yield according to the operating state of the formed foil, avoiding the rigid pressure of the guide plate 342 on the oxide film on the surface of the formed foil; the liquid guiding roller 344 reduces the frictional resistance during the liquid guiding process through rolling contact. Therefore, the downward pressure liquid guiding component 34 can guide most of the free phosphoric acid liquid away from the surface of the formed foil while protecting the surface of the formed foil.

[0041] A conveyor 35 is provided between the two downward-pressing liquid guiding assemblies 34. The conveyor 35 includes opposing rotating rollers 351, a transmission gear 352, a conveyor chain 353, and a second drive motor 354. The opposing rotating rollers 351 are located on both sides of the formed foil and are driven by the transmission gear 352, enabling them to rotate synchronously in opposite directions. The opposing rotating rollers 351 on the same side are connected by the conveyor chain 353, and at least one opposing rotating roller 351 is connected to the second drive motor 354. After the second drive motor 354 is started, the opposing rotating rollers 351 provide a clamping and conveying action on the formed foil, ensuring that the formed foil runs stably within the scraping treatment box 31. This prevents the formed foil from slipping, sagging, or shaking due to liquid on its surface, thus ensuring that the subsequent scraping assembly 36 can treat the residual liquid film on the surface of the formed foil in a stable position.

[0042] After being stably conveyed by the conveyor 35, the formed foil enters the working area of ​​the scraping assembly 36. At least two sets of scraping assemblies 36 are provided and arranged opposite each other within the scraping treatment box 31 to act on both sides of the formed foil. The scraping assembly 36 includes a scraper frame 361, a semi-arc plate 362, a first torsion spring 363, a pressure roller 364, a guide slide plate 365, a straight shaft 366, a second elastic component 367, a semi-arc scraper 368, and a second torsion spring 369. The semi-arc plate 362 is rotatably mounted on the scraper frame 361 via the first torsion spring 363, and the pressure roller 364 is rotatably mounted on the semi-arc plate 362. Under the action of the first torsion spring 363, the pressure roller 364 provides elastic pressure to the formed foil, keeping it stable in the scraping position. The guide slide plate 365 is slidably mounted within the scraper frame 361, and the straight shaft 366 is mounted on the guide slide plate 365 and cooperates with the second elastic component 367, allowing the guide slide plate 365 to move elastically. The semi-circular scraper 368 is rotatably mounted on the guide slide plate 365 via the second torsion spring 369.

[0043] During operation, the pressure roller 364 first flexibly presses the formed foil to prevent it from shaking at the scraping position. Then, the semi-circular scraper 368, under the action of the second torsion spring 369, approaches the surface of the formed foil to scrape off the residual phosphoric acid film. Because the semi-circular scraper 368 can rotate around its installation position, and the guide slide plate 365 can also generate elastic displacement under the action of the second elastic component 367, the semi-circular scraper 368 does not rigidly scrape the formed foil, but rather reduces the residual film in an elastic state. The scraped phosphoric acid falls into the bottom of the scraping treatment tank 31 and is discharged or recovered through the output valve 32. Through the continuous cooperation of the downward-pressing liquid guiding component 34, the conveyor 35, and the scraping component 36, the phosphoric acid scraper 3 can significantly reduce the amount of acid on the surface of the formed foil before it enters the cleaning section.

[0044] The formed foil, after being processed by the phosphoric acid scraper 3, enters the first cleaner 4. The first cleaner 4 is located after the phosphoric acid scraper 3 and is used for residual acid release cleaning of the formed foil whose surface acid content has been reduced. The first cleaner 4 includes a first cleaning tank 41, a second circulating pump 42, a second three-way valve 43, a second replenishing valve 44, a turbulence output pipe 45, a third tension roller 46, a conveying assembly 47, and a vibration assembly 48. The first cleaning tank 41 contains the cleaning solution, and the two third tension rollers 46 are respectively located at the top of both ends of the first cleaning tank 41 for guiding the formed foil into and out of the first cleaning tank 41.

[0045] A conveying assembly 47 is installed inside the first cleaning tank 41. The conveying assembly 47 includes a conveying roller 471, a third drive motor 472, and a conveyor chain 473. Several conveying rollers 471 are connected by the conveyor chain 473, and at least one conveying roller 471 is connected to the third drive motor 472. When the third drive motor 472 is working, it drives the conveying rollers 471 to rotate, causing the formed foil to continuously pass through the cleaning liquid along a predetermined path inside the first cleaning tank 41.

[0046] A vibration assembly 48 is also installed inside the first cleaning tank 41. The vibration assembly 48 includes a vibration frame 481, a guide slider 482, a third elastic component 483, a vibration motor 484, and intermediate transfer rollers 485. The vibration frame 481 is slidably disposed within the first cleaning tank 41 via the guide slider 482. The third elastic component 483 connects the vibration frame 481 and the first cleaning tank 41. Several intermediate transfer rollers 485 are rotatably disposed within the vibration frame 481, and the vibration motor 484 is mounted on the vibration frame 481. When the formed foil runs within the first cleaning tank 41, it passes through the intermediate transfer rollers 485. The vibration motor 484 drives the vibration frame 481 and the intermediate transfer rollers 485 to produce slight vibrations. The guide slider 482 is used to limit the vibration direction of the vibration frame 481, and the third elastic component 483 is used to provide elastic support and a reset function. The intermediate transfer rollers 485 transmit the vibration to the formed foil, causing slight vibrations and liquid exchange disturbances in the cleaning solution.

[0047] After phosphoric acid treatment, some phosphoric acid solution may remain in the corrosion pores, surface pits, or oxide film microstructures of the formed foil. Ordinary static immersion or surface spraying is insufficient to release this residual acid in a timely manner. This invention uses a vibration component 48 to vibrate the formed foil in the cleaning solution, disturbing the residual phosphoric acid solution in the pores and releasing it into the cleaning solution. Simultaneously, a turbulence output pipe 45 is installed in the first cleaning tank 41, connected to a second three-way valve 43. A second replenishment valve 44 is also connected to the second three-way valve 43, and a second circulation pump 42 is connected to the first cleaning tank 41. The second circulation pump 42 circulates the cleaning solution in the first cleaning tank 41, and the second three-way valve 43 distributes the circulating or replenishing solution to the turbulence output pipe 45. The turbulence output pipe 45 outputs cleaning solution near the formed foil, creating turbulence. This turbulence can promptly remove the residual phosphoric acid solution released by the vibration component 48 from the surface of the formed foil, preventing residual acid from remaining near the surface of the formed foil again.

[0048] After passing through the first cleaner 4, the formed foil enters at least three sets of second cleaners 5. These at least three sets of second cleaners 5 are arranged sequentially along the foil's running direction for staged spray cleaning. Each set of second cleaners 5 includes a second cleaning tank 51, a connecting valve 52, a conductivity detector 53, a fourth tension roller 54, a conveying assembly 55, and a cleaning assembly 56. The second cleaning tank 51 serves as the main container for the cleaning fluid. Two fourth tension rollers 54 are respectively located at the top of both ends of the second cleaning tank 51 to maintain the tension and guidance of the formed foil as it enters and exits the second cleaning tank 51. Adjacent second cleaners 5 are connected by connecting valves 52 to allow for the flow, discharge, or reuse of the cleaning fluid as needed. The conductivity detector 53 is located inside the second cleaning tank 51 to detect the conductivity of the cleaning fluid, reflecting the degree of ion residue in the cleaning fluid.

[0049] The second cleaning chamber 51 houses a conveying assembly 55. The conveying assembly 55 includes three A-shaped conveyor shafts 551, a fourth drive motor 552, and a conveyor belt chain 553. The three conveyor shafts 551 are connected via the conveyor belt chain 553, and at least one conveyor shaft 551 is connected to the fourth drive motor 552. The A-shaped arrangement of the three conveyor shafts 551 creates a stable support path for the conveyor belt chain 553 within the second cleaning chamber 51, allowing the formed foil to smoothly pass through the spray cleaning area under the support and drive of the conveyor belt chain 553.

[0050] The cleaning assembly 56 of the second cleaner 5 includes a cleaning support 561, a main pipe 562, a distribution pipe 563, and conical spray heads 564. The main pipe 562 is mounted on the cleaning support 561, and several conical spray heads 564 are connected to the main pipe 562 via the distribution pipes 563. After the cleaning solution enters the main pipe 562, it is distributed to each conical spray head 564 via the distribution pipes 563, and then sprayed onto the surface of the formed foil by the conical spray heads 564. The second cleaner 5, located near the first cleaner 4, is mainly used to remove the residual phosphoric acid solution released and carried out by the first cleaner 4; the second cleaner 5 located in the middle is used to further reduce the acid and ion residues on the surface of the formed foil; the second cleaner 5, located near the dryer 6, is used for final cleaning, so that the formed foil has a low surface residue before entering the dryer 6. Through the step-by-step treatment by at least three sets of second cleaners 5, the residual acid and ion residues on the surface of the formed foil are gradually reduced.

[0051] After undergoing a series of cleaning processes, the formed foil enters the dryer 6. The dryer 6 includes a drying chamber 61, a liquid outlet valve 62, a guide shaft 63, a liquid removal assembly 64, and a drying assembly 65. The guide shaft 63 is located at the input end of the drying chamber 61 and is used to guide the formed foil into the drying chamber 61. The liquid outlet valve 62 is connected to the drying chamber 61 and is used to discharge the liquid collected inside the drying chamber 61. The liquid removal assembly 64 is located inside the drying chamber 61 and in front of the drying assembly 65, ensuring that the formed foil undergoes mechanical liquid removal before being dried by air knife and heating after entering the drying chamber 61.

[0052] The liquid removal assembly 64 includes a liquid removal bracket 641, a sliding frame 642, a first elastic element 643, a rotating roller 644, a liquid removal plate 645, an inclined hinge plate 646, and a second elastic element 647. The sliding frame 642 is slidably disposed within the liquid removal bracket 641. The first elastic element 643 is connected between the sliding frame 642 and the liquid removal bracket 641. The rotating roller 644 is rotatably disposed on the sliding frame 642. Under the action of the first elastic element 643, the rotating roller 644 elastically contacts or approaches the surface of the formed foil, rolling to remove residual cleaning liquid from the surface of the formed foil. The liquid removal plate 645 is movably connected to the liquid removal bracket 641 via the inclined hinge plate 646. The second elastic element 647 is connected between the inclined hinge plate 646 and the liquid removal bracket 641, allowing the liquid removal plate 645 to elastically reposition itself along an inclined path when subjected to the action of the formed foil or liquid film. In addition to the hydraulic plate 645 further pressing or guiding away the residual liquid film on the surface of the formed foil, the amount of water carried by the formed foil before entering the drying assembly 65 is reduced.

[0053] The drying assembly 65 includes an air knife support 651, an air knife body 652, and a heater 653. The air knife body 652 is mounted inside the drying chamber 61 via the air knife support 651 and faces the surface of the formed foil. It blows airflow onto the surface of the formed foil to remove residual water film and edge water accumulation. The heater 653 is located inside the drying chamber 61 and is used to heat the air inside the drying chamber 61 or to assist in improving the drying capacity of the airflow from the air knife. By first removing most of the surface liquid through the liquid removal assembly 64, and then drying by the air knife body 652 and heater 653, the drying load can be reduced, water stains on the surface of the formed foil can be reduced, and drying uniformity can be improved. After drying, the formed foil is output from the dryer 6 and then discharged through the input / output guide 1 located at the foil outlet end.

[0054] In this embodiment, auxiliary bearings can be installed on the shafts and rollers in the input / output guide 1, phosphoric acid processor 2, phosphoric acid scraper 3, first cleaner 4, second cleaner 5, and dryer 6 to reduce rotational resistance and improve continuous operation stability.

[0055] The overall working process of this invention is as follows: After being guided by the foil inlet input / output guide 1, the formed foil enters the phosphoric acid processor 2. Inside the phosphoric acid treatment tank 21, it is driven by the porous conveying roller 262 and comes into full contact with the phosphoric acid treatment liquid. After phosphoric acid treatment, the formed foil enters the phosphoric acid scraper 3. First, the phosphoric acid liquid carried out from the lower surface is guided by the downward pressure guiding liquid assembly 34, and then it is stably clamped by the conveyor 35. Subsequently, the residual phosphoric acid liquid is scraped off by the scraping liquid assembly 36 in an elastic yielding state. After the acid content is reduced, the formed foil enters the first cleaner 4, and the vibration group... The component 48 causes the residual phosphoric acid solution in the pores of the formed foil to be released, and the turbulence output pipe 45 forms a cleaning turbulence and carries the released residual acid away from the surface of the formed foil. Then the formed foil passes through at least three sets of second cleaners 5 in sequence, and is sprayed and cleaned step by step by the conical spray head 564, and the state of the cleaning solution is monitored by the conductivity detector 53. Finally, the formed foil enters the dryer 6, where the residual cleaning solution is first removed by the liquid removal component 64, and then dried by the air knife body 652 and the heater 653, and finally output through the foil outlet input / output guide 1.

[0056] Compared to directly feeding phosphoric acid-treated electrolytic foil into a conventional cleaning tank, this invention first reduces the amount of acid on the electrolytic foil before it enters the cleaning section using a phosphoric acid scraper 3, thus lowering the acid load of the subsequent cleaning solution. Then, the vibration component 48 and the turbulence output pipe 45 in the first cleaner 4 work together to release residual phosphoric acid from the pores, pits, and oxide film microstructures, allowing it to be carried away by the cleaning solution. Finally, at least three sets of second cleaners 5 perform step-by-step spray cleaning. These processing sections work in a continuous sequence along the electrolytic foil's running direction, enabling the electrolytic foil to complete stable phosphoric acid treatment, low-acid transfer, residual acid release, step-by-step cleaning, and drying output during continuous production, thereby improving the thoroughness of electrolytic foil cleaning and production stability.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil, characterized in that, It includes two sets of input / output guides (1), a phosphoric acid processor (2), a phosphoric acid scraper (3), a first cleaner (4), at least three sets of second cleaners (5), and a dryer (6); The phosphoric acid processor (2), the phosphoric acid scraper (3), the first cleaner (4), at least three sets of the second cleaners (5) and the dryer (6) are arranged in sequence along the foil forming direction, and two sets of input and output guides (1) are respectively set at the input end of the phosphoric acid processor (2) and the output end of the dryer (6); The phosphoric acid processor (2) includes a guide assembly (26) for contacting the formed foil with the phosphoric acid treatment liquid and continuously conveying the formed foil. The phosphoric acid scraper (3) includes a pressure guiding assembly (34) for pressing down the phosphoric acid liquid carried by the formed foil and a scraping assembly (36) for elastically scraping off residual phosphoric acid liquid. The first cleaner (4) includes a vibration assembly (48) for generating a vibration cleaning effect on the formed foil and a turbulence output pipe (45) for forming a cleaning turbulence. At least three sets of second cleaners (5) are used to perform step-by-step spray cleaning on the formed foil after being treated by the first cleaner (4). The dryer (6) is used to remove liquid and dry the cleaned formed foil.

2. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The input / output guide (1) includes a first mounting bracket (11), a top guide roller (12), a cylinder (13), a second mounting bracket (14), a linear guide roller (15), and a side guide plate (16). The top guide roller (12) is rotatably mounted on the first mounting frame (11), the second mounting frame (14) is connected to the output end of the cylinder (13), the linear guide roller (15) is rotatably mounted inside the second mounting frame (14), and the side guide plate (16) is mounted on the inner wall of the second mounting frame (14) to tension, guide and side limit the formed foil.

3. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The phosphoric acid processor (2) includes a phosphoric acid processing tank (21), a first circulation pump (22), a first three-way valve (23), a first replenishment valve (24), a first tension drive roller (25), and the guide assembly (26). Two first tension drive rollers (25) are respectively set at the top of both ends of the phosphoric acid treatment tank (21). The first circulation pump (22) and the first three-way valve (23) are both connected to the phosphoric acid treatment tank (21). The first replenishment valve (24) is connected to the first three-way valve (23) to circulate and replenish the phosphoric acid treatment liquid in the phosphoric acid treatment tank (21). The guiding assembly (26) includes a first drive motor (261), a plurality of porous conveying rollers (262), a drive chain (263), and an auxiliary bearing (264). The plurality of porous conveying rollers (262) are spaced apart in the phosphoric acid treatment box (21) along the running direction of the formed foil. Adjacent porous conveying rollers (262) are connected by the drive chain (263). At least one porous conveying roller (262) is connected to the first drive motor (261).

4. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The phosphoric acid scraper (3) includes a scraping treatment box (31), an output valve (32), a second tension roller (33), the downward pressure liquid guiding assembly (34), a conveyor (35), and the scraping assembly (36). Two second tension rollers (33) are respectively disposed at the top of both ends of the scraping treatment box (31), two downward pressure guiding liquid assemblies (34) are disposed opposite to each other in the scraping treatment box (31), the conveyor (35) is disposed between the two downward pressure guiding liquid assemblies (34), at least two sets of scraping liquid assemblies (36) are disposed opposite to each other in the scraping treatment box (31), and the output valve (32) is connected to the scraping treatment box (31) to discharge or recover the phosphoric acid liquid guided by the downward pressure guiding liquid assemblies (34) and the scraping liquid assemblies (36).

5. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 4, characterized in that, The downward pressure liquid guiding assembly (34) includes a mounting bracket (341), a guide plate (342), a first elastic component (343), and a liquid guiding roller (344). The mounting bracket (341) is disposed inside the scraping treatment box (31), the guide plate (342) is movably disposed on the mounting bracket (341), the first elastic component (343) is connected between the mounting bracket (341) and the guide plate (342), the liquid guiding roller (344) is rotatably disposed on the mounting bracket (341), and the guide plate (342) and the liquid guiding roller (344) cooperate to form a liquid guiding path for the phosphoric acid solution on the surface of the electrolytic foil to flow downward; The conveyor (35) includes opposing rotating rollers (351), transmission gears (352), a conveyor chain (353), and a second drive motor (354). The opposing rotating rollers (351) arranged opposite each other are driven by the transmission gears (352). The opposing rotating rollers (351) located on the same side are connected by the conveyor chain (353). At least one of the opposing rotating rollers (351) is connected to the second drive motor (354).

6. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 4, characterized in that, The scraping assembly (36) includes a scraper frame (361), a semi-circular blade (362), a first torsion spring (363), a pressure roller (364), a guide slide plate (365), a straight shaft (366), a second elastic component (367), a semi-circular scraper (368), and a second torsion spring (369). The semi-arc plate (362) is rotatably mounted on the scraper (361) via the first torsion spring (363), the pressure roller (364) is rotatably mounted on the semi-arc plate (362), the guide slide plate (365) is slidably mounted inside the scraper (361), the straight shaft (366) is mounted on the guide slide plate (365) and cooperates with the second elastic component (367), and the semi-arc scraper (368) is rotatably mounted on the guide slide plate (365) via the second torsion spring (369), so that the pressure roller (364) and the semi-arc scraper (368) can act on the surface of the formed foil in an elastic yielding state.

7. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The first cleaner (4) includes a first cleaning tank (41), a second circulation pump (42), a second three-way valve (43), a second replenishment valve (44), the turbulence output pipe (45), a third tension roller (46), a conveying assembly (47), and the vibration assembly (48). Two third tension rollers (46) are respectively disposed at the top of both ends of the first cleaning tank (41), the conveying assembly (47) is disposed inside the first cleaning tank (41), the vibration assembly (48) is disposed inside the first cleaning tank (41) and located on the running path of the formed foil, the turbulence output pipe (45) is disposed inside the first cleaning tank (41) and connected to the second three-way valve (43), the second replenishing valve (44) is connected to the second three-way valve (43), and the second circulating pump (42) is connected to the first cleaning tank (41), so that the cleaning liquid can circulate in the first cleaning tank (41) and form turbulence cleaning on the formed foil.

8. The phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 7, characterized in that, The conveying assembly (47) includes a conveying roller (471), a third drive motor (472) and a conveying chain (473). A plurality of the conveying rollers (471) are connected by the conveying chain (473), and at least one of the conveying rollers (471) is connected by the third drive motor (472). The vibration assembly (48) includes a vibration frame (481), a guide slider (482), a third elastic component (483), a vibration motor (484), and a transfer roller (485). The vibration frame (481) is slidably disposed in the first cleaning tank (41) via the guide slider (482). The third elastic component (483) is connected between the vibration frame (481) and the first cleaning tank (41). A plurality of transfer rollers (485) are rotatably disposed in the vibration frame (481). The vibration motor (484) is disposed on the vibration frame (481) so that the transfer rollers (485) generate a vibration effect on the formed foil passing through the first cleaning tank (41).

9. A phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The second cleaner (5) includes a second cleaning tank (51), a connecting valve (52), a conductivity detector (53), a fourth tension roller (54), a conveying assembly (55), and a cleaning assembly (56). The two fourth tension rollers (54) are respectively set at the top of both ends of the second cleaning box (51), the connecting valve (52) is connected to the second cleaning box (51), the adjacent second cleaner (5) is connected through the connecting valve (52), and the conductivity detector (53) is set inside the second cleaning box (51). The conveying assembly (55) includes three conveying shafts (551) arranged in an A-shape, a fourth drive motor (552) and a conveyor belt chain (553). The three conveying shafts (551) are connected by the conveyor belt chain (553), and at least one of the conveying shafts (551) is connected by the fourth drive motor (552). The cleaning assembly (56) includes a cleaning bracket (561), a main pipe (562), a water distribution pipe (563), and a conical spray head (564). The main pipe (562) is mounted on the cleaning bracket (561), and a plurality of the conical spray heads (564) are connected to the main pipe (562) through the water distribution pipe (563) to spray cleaning liquid onto the chemically formed foil.

10. A phosphoric acid treatment and cleaning apparatus for the production of electrolytic foil according to claim 1, characterized in that, The dryer (6) includes a drying chamber (61), a liquid outlet valve (62), a guide shaft (63), a liquid removal assembly (64), and a drying assembly (65). The guide shaft (63) is located at the input end of the drying chamber (61), the liquid outlet valve (62) is connected to the drying chamber (61), and the liquid removal assembly (64) is located inside the drying chamber (61) and in front of the drying assembly (65). The liquid removal assembly (64) includes a liquid removal bracket (641), a sliding frame (642), a first elastic element (643), a rotating roller (644), a liquid removal plate (645), an inclined hinge plate (646), and a second elastic element (647). The sliding frame (642) is slidably disposed within the liquid removal bracket (641). The first elastic element (643) is connected between the sliding frame (642) and the liquid removal bracket (641). The rotating roller (644) is rotatably disposed on the sliding frame (642). The liquid removal plate (645) is movably connected to the liquid removal bracket (641) through the inclined hinge plate (646). The second elastic element (647) is connected between the inclined hinge plate (646) and the liquid removal bracket (641). The drying assembly (65) includes an air knife support (651), an air knife body (652), and a heater (653). The air knife body (652) is disposed in the drying chamber (61) via the air knife support (651), and the heater (653) is disposed in the drying chamber (61).

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