A filter and demagnetizing device for electrolytic copper foil liquid preparation pipeline

Abstract

This utility model discloses a filtration and demagnetization device for an electrolytic copper foil liquid preparation pipeline, comprising a core unit. The core unit has a detachable maintenance cover on its top, and a support plate is connected to the bottom of the maintenance cover. A magnetic component is fixedly connected below the support plate, and an anti-erosion filter barrel is sleeved around the magnetic component. The outer wall of the anti-erosion filter barrel is provided with equiangularly distributed grid-like filter holes. The diameter of the grid-like filter holes on the output side of the core unit is smaller than that on the input side of the core unit. This utility model is installed at the rear end of the filtration equipment via a left and right connecting end. The magnetic component actively adsorbs ferromagnetic impurities in the electrolyte, compensating for the shortcomings of traditional filtration processes in handling magnetic impurities. The maintenance cover is threaded to the top of the core unit via a lifting eye nut and screws, allowing for quick disassembly without special tools. This enables the magnetic component and the anti-erosion filter barrel to be removed as a whole, significantly reducing maintenance time.

Description

Technical Field

[0001] This utility model mainly relates to the field of electrolytic copper foil processing technology, specifically to an electrolytic copper foil liquid preparation pipeline filtration and demagnetization device. Background Technology

[0002] In the production of electrolytic copper foil, the electrolyte is the core medium for the migration and deposition of copper ions. Its circulation and purity control directly determine the quality of the copper foil. Therefore, filtration devices are used during the process, usually installed at key nodes in the electrolyte return path to form a closed-loop system of "production → filtration → circulation" to ensure production efficiency and product quality stability. Traditional filtration equipment mostly uses a single filter element or filter screen. Although it can intercept large particles of impurities through physical interception, it is difficult to efficiently intercept ferromagnetic impurities, causing them to enter the electrolytic cell with the electrolyte and causing defects such as pinholes and pits on the surface of the copper foil. In addition, some filtration equipment adopts an integrated structure, making it difficult to clean the internal filter element. Utility Model Content

[0003] This utility model addresses the problem of overly simplistic solutions in existing technologies by providing a filtration and demagnetization device for electrolytic copper foil liquid preparation pipelines. This device solves the problem mentioned in the background that it is difficult to efficiently intercept ferromagnetic impurities, causing them to enter the electrolytic cell with the electrolyte.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] An electrolytic copper foil liquid preparation pipeline filtration and demagnetization device includes a core unit. The top of the core unit is provided with a detachable maintenance cover. The bottom of the maintenance cover is connected to a support plate. A magnetic component is fixedly connected below the support plate. An anti-erosion filter barrel is sleeved on the outside of the magnetic component. The outer wall of the anti-erosion filter barrel is provided with equiangularly distributed grid-like filter holes. The diameter of the grid-like filter holes on the output side of the anti-erosion filter barrel is smaller than that on the input side of the core unit.

[0006] Furthermore, the left and right connecting ends are welded to the left and right sides of the outer wall of the core unit, respectively, and the core unit has pipe openings at both ends, which are connected to the left and right connecting ends, respectively. Flanges are provided on the outer sides of both the left and right connecting ends.

[0007] Furthermore, the inner wall of the core unit is provided with a first pair of interfaces and a second pair of interfaces from top to bottom, and the bottom of the maintenance cover is fixed with an annular rubber strip that is inserted into the interface slot of the first pair of interfaces, and the bottom of the support plate is fixed with an annular rubber strip that is inserted into the interface slot of the second pair of interfaces.

[0008] Furthermore, the magnetic component includes multiple strip-shaped permanent magnets arranged in an array, or the magnetic component is a single cylindrical permanent magnet, and the multiple strip-shaped magnetic bars arranged in the array or the single cylindrical magnetic bar are all fixed to the bottom of the support plate.

[0009] Furthermore, the top of the anti-erosion filter barrel is fixed to the bottom of the support plate by bolts, and its interior is provided with an inner cavity for accommodating the magnetic components. The bottom of the anti-erosion filter barrel is solid and fits tightly against the bottom wall of the core unit.

[0010] Furthermore, the core unit has screws arranged in a ring on its top, and the inspection top cover has through holes for the screws at the corresponding screw positions. The inspection top cover is fixed to the core unit by connecting the screws to the screws via a lifting eye nut. A handle is welded to the top of the inspection top cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The flanges on the left and right connecting ends adopt a standardized design. When installed at the rear end of the filtration equipment, they can directionally adsorb ferromagnetic microparticles (such as iron filings and iron oxide) that were not removed by the previous filtration. The magnetic component uses a strip permanent magnet array or cylindrical permanent magnets, which can actively adsorb ferromagnetic impurities in the electrolyte, making up for the shortcomings of traditional filtration processes in handling magnetic impurities. The outer wall of the anti-erosion filter tank is equipped with a grid-like filter hole with a larger diameter on the left and a smaller diameter on the right. The large diameter on the left guides the medium to diffuse quickly to the vicinity of the magnetic component, expanding the range of the magnetic field to improve adsorption efficiency. The small diameter on the right forms a barrier to physically intercept impurities that fall off the surface of the magnetic component due to fluid disturbance. The two work together to achieve efficient adsorption and multiple filtration of ferromagnetic impurities, while also intercepting both large and small particles of impurities, solving the problem of incomplete treatment of complex impurities by traditional single filtration mechanisms.

[0013] 2. The maintenance top cover is connected to the core unit via a ring of screws on the top of the core unit using eye bolts. This allows for quick disassembly without special tools, enabling the complete removal of the magnetic components and the anti-erosion filter cartridge, significantly reducing maintenance time. Simultaneously, the ring-shaped rubber strips on the bottom of the maintenance top cover and support plate interlock with the first and second interface slots on the inner wall of the core unit, forming a double-layered sealing barrier. Combined with the clamping force of the top bolt connection, this effectively resists electrolyte penetration, avoiding the problems of easy aging and leakage associated with traditional threaded connections or rubber seals. Furthermore, the interlocking structure of the rubber strips and interfaces facilitates quick alignment during installation, reducing the risk of seal failure due to misalignment and improving equipment maintenance efficiency and operational reliability.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the core unit structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the maintenance top cover and the anti-erosion filter barrel of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the core unit of this utility model.

[0019] Numbering on the map:

[0020] 1. Core unit; 101. First pair of interfaces; 102. Second pair of interfaces; 2. Inspection top cover; 3. Support plate; 4. Magnetic assembly; 5. Anti-erosion filter barrel; 6. Left connection end; 7. Right connection end. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Please refer to the appendix carefully. Figure 1-4 An electrolytic copper foil liquid preparation pipeline filtration and demagnetization device includes a core unit 1. The top of the core unit 1 is provided with a detachable maintenance cover 2. The bottom of the maintenance cover 2 is connected to a support plate 3. A magnetic component 4 is fixedly connected below the support plate 3. An anti-erosion filter barrel 5 is sleeved on the outside of the magnetic component 4. The outer wall of the anti-erosion filter barrel 5 is provided with equiangularly distributed grid-like filter holes. The diameter of the grid-like filter holes on the output side of the anti-erosion filter barrel 5 is smaller than that on the input side of the core unit 1.

[0024] The mesh filter pores of the anti-erosion filter 5 on the input side of the core unit 1 are set to a diameter range of 5mm-10mm. This diameter range is designed to allow the medium to diffuse rapidly around the magnetic component 4, ensuring that ferromagnetic impurities can be fully adsorbed, while avoiding the direct entry of excessively large particles that may cause potential blockage. The mesh filter pores of the anti-erosion filter 5 on the output side of the core unit 1 are set to a diameter range of 1mm-3mm. This smaller diameter design is designed to form an effective physical barrier to block impurities that may fall off the surface of the magnetic component 4 due to fluid disturbance, ensuring the purity of the final filtered medium.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the left connecting end 6 and the right connecting end 7 are welded to the left and right sides of the outer wall of the core unit 1, respectively. The core unit 1 has pipe openings at both ends, which are connected to the left connecting end 6 and the right connecting end 7, respectively. Flanges are provided on the outer sides of the left connecting end 6 and the right connecting end 7. The left connecting end 6, the right connecting end 7 and their surface flanges are integrated with the core unit 1 by welding, forming a rigid integral structure that can withstand the pressure of the liquid in the pipeline and the mechanical stress of frequent disassembly and assembly. 316L stainless steel can be used. At the same time, the inner walls of the left connecting end 6, the right connecting end 7 and the core unit 1 can be coated with PTFE, epoxy resin, nickel-phosphorus alloy or ceramic coatings, which can be used to specifically improve the corrosion resistance, wear resistance and media purity guarantee capability for the strong acidity and high impurity characteristics of the electrolytic liquid.

[0026] In this embodiment, as Figure 2 and Figure 3 As shown, the inner wall of the core unit 1 is provided with a first pair of interfaces 101 and a second pair of interfaces 102 from top to bottom. The bottom of the maintenance cover 2 is fixed with an annular rubber strip that is inserted into the interface slot of the first pair of interfaces 101. The bottom of the support plate 3 is fixed with an annular rubber strip that is inserted into the interface slot of the second pair of interfaces 102. The annular rubber strips at the bottom of the maintenance cover 2 and the support plate 3 are respectively inserted into the slots of the first pair of interfaces 101 and the second pair of interfaces 102, forming two layers of sealing barriers. Combined with the clamping force of the top bolt connection, it can effectively resist the penetration of electrolyte and avoid the risk of leakage.

[0027] In this embodiment, as Figure 3As shown, the magnetic component 4 includes multiple strip-shaped permanent magnets arranged in an array, or the magnetic component 4 is a single cylindrical permanent magnet. The multiple strip-shaped magnetic rods arranged in an array or the single cylindrical magnetic rod are fixed to the bottom of the support plate 3. The surface of the magnetic component 4 is coated with a 20μm thick polytetrafluoroethylene anti-corrosion layer with a Rockwell hardness ≥HRC55. The magnetic component 4 can form a dense magnetic field by arranging the strip array, such as an 8×8 matrix, with a magnetic field strength of 3000-5000 Gauss, which is suitable for processing large flow electrolytes (flow rate ≤1.5m / s). The cylindrical permanent magnet provides a concentrated strong magnetic field (center field strength ≥8000 Gauss), which is suitable for high impurity concentration scenarios (iron content >50ppm). Both configurations are modularly installed through the support plate 3.

[0028] For electrolytic copper foil liquid preparation pipelines with diameters of DN50-DN200, the inner diameter of the core unit 1 can typically be 1.5-2 times the pipe diameter, while the outer diameter of the anti-erosion filter barrel 5 is 10-20mm smaller than the inner diameter of the core unit 1; the diameter / side length of the magnetic component 4 is 0.6-0.8 times the inner diameter of the anti-erosion filter barrel 5, and its length matches the height of the filter barrel, which can improve the filtration efficiency to over 95%, and extend the maintenance cycle to 3-6 months through the detachable structure.

[0029] In this embodiment, as Figure 3 As shown, the top of the anti-scouring filter bucket 5 is fixed to the bottom of the support plate 3 by bolts. It has an inner cavity to accommodate the magnetic component 4. The bottom of the anti-scouring filter bucket 5 is solid and fits tightly against the bottom wall of the core unit 1. The solid bottom surface of the anti-scouring filter bucket 5 fits tightly against the bottom wall of the core unit 1 to form a static sealing surface, which prevents liquid from leaking from the bottom of the anti-scouring filter bucket 5. It also provides bottom support for the anti-scouring filter bucket 5. Together with the top bolts, it forms a stable "upper and lower clamping" structure to prevent the anti-scouring filter bucket 5 from displacing due to fluid pressure and affecting the effectiveness of the magnetic component 4.

[0030] The large aperture on one side of the left connecting end 6 can reduce flow resistance. The large aperture allows the medium to diffuse quickly to the vicinity of the magnetic component 4, expanding the range of the magnetic field. Ferromagnetic impurities are pre-adsorbed during the fluid diffusion process, improving adsorption efficiency and guiding the medium to fully contact the magnetic component 4. On the other hand, the small aperture on one side of the right connecting end 7 can prevent impurities from falling off, ensuring filtration accuracy. During the adsorption of impurities such as iron filings by the magnetic component 4, iron filings and impurities on the surface may fall off due to fluid disturbance. The small aperture on the right side can form a barrier effect, physically intercepting these falling particles and preventing them from entering the subsequent electrolytic cell with the medium. The small aperture and magnetic adsorption can form a double insurance to ensure the purity of the final filtered medium.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, screws are distributed in a ring on the top of the core unit 1, and the maintenance cover 2 has through holes for the screws at the corresponding screw positions. The maintenance cover 2 is fixed to the core unit 1 by connecting the screws with the eye nut. A handle is welded to the top of the maintenance cover 2. The threaded connection between the eye nut and the screw allows for quick disassembly and installation of the maintenance cover 2 without the need for special tools, thus shortening the maintenance time when cleaning the magnetic component 4. At the same time, the sealing status of the maintenance cover 2 can be intuitively judged by observing the tightness of the eye nut, such as the exposed length of the screw thread, reducing the risk of maintenance oversight. The correspondence between the screws of the core unit 1 and the through holes of the maintenance cover 2 also facilitates quick alignment and installation, avoiding sealing failure or thread damage caused by misalignment.

[0032] The specific operating procedure of this utility is as follows: The device is installed at the rear end of the filter equipment through the flanges on the surface of the left connecting end 6 and the right connecting end 7. Specifically, the left connecting end 6 is fixed to one end of the external pipe using flange bolts, and the right connecting end 7 is fixed to another external pipe. When connecting, it is necessary to ensure the seal between the flanges, and sealing materials such as gaskets can be used.

[0033] The top of the core unit 1 has screws arranged in a ring. Align the through screw holes of the inspection cover 2 with the corresponding screw positions, and then connect the inspection cover 2 to the core unit 1 by means of the eye nut and the screw thread.

[0034] During use, after the medium passes through the pre-filter to remove large particulate impurities, it enters the cavity of the core unit 1 through the left connecting end 6. After the medium enters the cavity of the core unit 1, it will come into contact with the components inside the cavity. Since the medium is prone to carrying metal debris such as iron filings and iron oxide, these debris will be attracted to the outer wall by the magnetic component 4 of the permanent magnet. The magnetic component 4 can be multiple strip permanent magnets arranged in an array, or a single cylindrical permanent magnet. The medium will flow from the gap between the magnetic component 4 and the anti-erosion filter barrel 5 through the grid-like filter holes on one side of the anti-erosion filter barrel 5 to the inside of the right connecting end 7, and finally the medium enters the subsequent electrolytic cell.

[0035] The core unit 1 has a detachable structure, and the magnetic component 4 can be cleaned and maintained regularly. When maintaining, close the valve near the liquid inlet of the external pipeline, and remove the lifting lug nuts corresponding to the top of the inspection cover 2 and the core unit 1 one by one to clean and maintain the magnetic component 4 and other components.

[0036] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A filter and demagnetizing device for an electrolytic copper foil liquid preparation pipeline, comprising a core unit (1), characterized in that: The core unit (1) is provided with a detachable maintenance cover (2) at the top. The maintenance cover (2) is connected to a support plate (3) at the bottom. A magnetic component (4) is fixedly connected below the support plate (3). An anti-erosion filter barrel (5) is sleeved on the outside of the magnetic component (4). The outer wall of the anti-erosion filter barrel (5) is provided with equiangularly distributed grid-like filter holes. The diameter of the grid-like filter holes on the output side of the core unit (1) is smaller than that on the input side of the core unit (1).

2. The electrolytic copper foil liquid preparation pipeline filtration and demagnetization device according to claim 1, characterized in that: The core unit (1) has left connecting end (6) and right connecting end (7) welded to the left and right sides of its outer wall, respectively. The core unit (1) has pipe openings at both ends, which are connected to the left connecting end (6) and right connecting end (7) respectively. Flanges are provided on the outer sides of the left connecting end (6) and right connecting end (7).

3. The electrolytic copper foil liquid preparation pipeline filtration and demagnetization device according to claim 1, characterized in that: The inner wall of the core unit (1) is provided with a first pair of interfaces (101) and a second pair of interfaces (102) from top to bottom. The bottom of the maintenance cover (2) is fixed with an annular rubber strip that is inserted into the interface slot of the first pair of interfaces (101), and the bottom of the support plate (3) is fixed with an annular rubber strip that is inserted into the interface slot of the second pair of interfaces (102).

4. The electrolytic copper foil liquid preparation pipeline filtration and demagnetization device according to claim 1, characterized in that: The magnetic component (4) includes multiple strip permanent magnets arranged in an array, or the magnetic component (4) is a single cylindrical permanent magnet. The multiple strip magnetic rods arranged in the array or the single cylindrical magnetic rod are all fixed to the bottom of the support plate (3).

5. The electrolytic copper foil liquid preparation pipeline filtration and demagnetization device according to claim 1, characterized in that: The top of the anti-erosion filter barrel (5) is fixed to the bottom of the support plate (3) by bolts. It has an inner cavity for accommodating the magnetic component (4), and the bottom of the anti-erosion filter barrel (5) is solid and fits tightly against the bottom wall of the core unit (1).

6. The electrolytic copper foil liquid preparation pipeline filtration and demagnetization device according to claim 1, characterized in that: The core unit (1) has screws distributed in a ring on its top, and the maintenance cover (2) has through holes for the screws at the corresponding screw positions. The maintenance cover (2) is fixed to the core unit (1) by connecting the screws with the eye nut. A handle is welded to its top.

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