A high-efficiency filter element device for copper foil production electrolyte

Abstract

The utility model discloses a copper foil production electrolyte high -efficient filter filter core device, including filter core, shell subassembly, the cross section of filter core is round and includes the inner layer filter core, middle layer filter core, outer layer filter core from inside to outside in proper order, the shell subassembly includes the sleeve for gap setting in the hollow of outer layer filter core, covers the first end cover of sleeve upper and lower ends, second end cover, isolator, porous middle water pipe, the first end cover has reserved liquid inlet, and the middle water pipe inserts to liquid inlet, adopts three -layer level filter core design, and filter hole diameter gradually reduces from inside to outside, realizes the step -by -step filtration of " rough filter, fine filter, super -fine filter", can remove the impurity and pollutant of different particle size in electrolyte, and the filtration precision covers 0.5 2mu m range, satisfies the copper foil production to electrolyte purity's strict requirement.

Description

Technical Field

[0001] This utility model is a high-efficiency filter element device for electrolyte in copper foil production, belonging to the field of copper foil production equipment. Background Technology

[0002] In the copper foil electrolytic production process, the purity of the electrolyte directly determines the surface smoothness, mechanical properties, and electrical conductivity of the copper foil.

[0003] Existing electrolyte filtration devices mostly use a single filter element structure, which has the following shortcomings: First, the filtration precision is limited, making it difficult to remove large particulate impurities and tiny contaminants at the same time, which can easily lead to filter element clogging or incomplete filtration; Second, the device's sealing and flow channel design are inadequate, which can easily cause electrolyte leakage or local stagnation, reducing filtration efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-efficiency filter element device for producing electrolyte in copper foil production, so as to solve the problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency filter cartridge device for producing electrolyte in copper foil production, comprising a filter cartridge and a housing assembly; the filter cartridge has a circular cross-section and includes, from the inside out, an inner filter cartridge, a middle filter cartridge, and an outer filter cartridge; the housing assembly includes a sleeve for being spaced within the hollow outer filter cartridge, a first end cap covering the upper and lower ends of the sleeve, a second end cap, a separator, and a porous water pipe; the first end cap has a pre-reserved inlet, and the water pipe is inserted into the inlet, corresponding to the inner filter cartridge; the second end cap has an outlet, corresponding to the outer filter cartridge; the separator blocks the filter cartridge facing the second end cap. The inner filter element has a pore diameter of 1.2-2 μm, the middle filter element has a pore diameter of 0.8-1.2 μm, and the outer filter element has a pore diameter of 0.5-0.6 μm.

[0006] Preferably, the inner filter element includes, but is not limited to, a high-strength polyester filter or a nylon filter.

[0007] Preferably, carbon powder is added to the middle filter element.

[0008] Preferably, the outer filter element is made of, but is not limited to, a high-precision polytetrafluoroethylene filter screen.

[0009] Preferably, a gap of at least 1 cm is reserved between the outer filter element and the sleeve.

[0010] Preferably, the second end cap is designed to protrude, so that there is a gap of at least 3 cm between the second end cap and the spacer.

[0011] Preferably, the diameter of the greywater pipe is smaller than the diameter of the inner filter element, and the porous structure of the greywater pipe extending into the inner filter element has a funnel-shaped diffuser.

[0012] Preferably, the first end cap and the second end cap are sealed and fixed on the sleeve.

[0013] Preferably, the greywater pipe is sealed to the liquid inlet.

[0014] Preferably, the bottom of the greywater pipe is solid and has threads on its outer surface. The separator is threaded and sealed to the bottom of the greywater pipe, so that the separator is tightly attached to the filter element.

[0015] Beneficial effects This utility model adopts a three-stage filter element design, with the filter pore diameter gradually decreasing from the inside to the outside, realizing a step-by-step filtration of "coarse filtration, fine filtration, and ultra-fine filtration". It can remove impurities and contaminants of different particle sizes in the electrolyte, and the filtration accuracy covers the range of 0.5-2μm, meeting the stringent requirements of copper foil production for electrolyte purity. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is an exploded structural diagram of a high-efficiency filter cartridge device for producing electrolyte in copper foil production, according to the present invention. Figure 2 This is a schematic diagram of the filter element structure of a high-efficiency filter element device for producing electrolyte in copper foil production, according to this utility model. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figure 1 , Figure 2 This utility model provides a technical solution for a high-efficiency filter cartridge device for producing electrolyte in copper foil production: including filter cartridge 1 and outer shell assembly; The filter element 1 is cylindrical in shape with a circular cross-section. It adopts a three-layer coaxial nested design, consisting of an inner filter element 11, a middle filter element 12, and an outer filter element 13 from the inside out.

[0019] The inner filter element 11 has a filter pore diameter of 1.2-2μm and is used for preliminary filtration of large particulate suspended impurities (such as metal debris and undissolved salts) in the electrolyte. In one embodiment, the material is a high-strength polyester filter screen, which has good tensile strength and acid resistance and can withstand the pressure impact when the electrolyte flows, thus avoiding deformation and damage of the filter screen.

[0020] The middle layer filter element 12 has a filter pore diameter of 0.8-1.2μm, which is used to filter medium-sized pollutants (such as colloidal particles and small metal oxides). Carbon powder is uniformly added to the filter substrate. The porous adsorption structure of the carbon powder is used to simultaneously remove organic impurities (such as additive decomposition products) and some heavy metal ions (such as iron ions and zinc ions) in the electrolyte, thereby improving the purity of the electrolyte.

[0021] The outer filter element 13 has a pore diameter of 0.5-0.6μm. As a fine filtration layer, it is used to remove the remaining tiny impurities and ions in the electrolyte. The material is a high-precision polytetrafluoroethylene filter screen, which has excellent acid corrosion resistance, high temperature resistance and chemical stability. It can be used for a long time in the acidic electrolyte environment of copper foil production, and the filtration accuracy is stable and the pores are not easily enlarged due to chemical corrosion.

[0022] The housing assembly provides installation support and sealing protection for the filter element 1, while guiding the electrolyte to flow through a preset channel. It includes a sleeve 21, a first end cap 22, a second end cap 23, a separator 26, and a porous water pipe 25.

[0023] The sleeve 21 is a hollow cylinder, which is used to fit around the outer side of the outer filter element 13 to provide flow space for the electrolyte to flow from the outer filter element 13 to the outlet 24. At least 1 cm of gap is reserved between the outer filter element 13 and the inner wall of the sleeve 21 to ensure that the filtered electrolyte can be smoothly collected to the outlet 24, and to avoid the increase of flow resistance and reduction of filtration efficiency due to the gap being too small.

[0024] The first end cap 22 and the second end cap 23 cover the upper and lower ends of the sleeve 21 respectively, and are fixedly connected to the sleeve 21 by bolts and existing sealing rings, sealant, etc., to ensure the overall sealing of the device and prevent electrolyte leakage. The first end cap 22 has a liquid inlet in the middle for the insertion of the water pipe 25. The second end cap 23 has a protruding design, so that there is a gap of at least 3 cm between the inner surface of the second end cap 23 and the isolation member 26. This gap can serve as a buffer area for the electrolyte.

[0025] The isolator 26 has a circular plate-like structure at the bottom, which is used to block the side of the filter element 1 facing the second end cap 23. The isolator 26 is threadedly sealed to the bottom of the water pipe 25. The threaded fixation allows the isolator 26 to be tightly attached to the end face of the filter element 1, which not only achieves axial fixation of the filter element 1, but also prevents electrolyte from leaking from the gap between the end face of the filter element 1 and the isolator 26, ensuring that the electrolyte must be filtered through three layers of filter element 1 before it can flow out.

[0026] The porous greywater pipe 25 is a hollow tubular structure. One end is inserted into the liquid inlet of the first end cap 22 (not shown in the figure) and extends out from the bottom of the filter element 1, with a sealed connection. The other end is connected to the electrolyte to be filtered. The end of the greywater pipe 25 that extends into the inner filter element 11 is set as a funnel-shaped diffuser. The porous distribution density of the diffuser is higher than that of the pipe body, which can evenly disperse the electrolyte to be filtered to the entire end face of the inner filter element 11, improve the filtration area utilization rate of the inner filter element 11, and avoid local overload and blockage of the filter element 1. In addition, the bottom of the greywater pipe 25 adopts a solid design and the outer surface is provided with external threads, which cooperate with the internal threads of the isolation member 26 to achieve a sealed connection. At the same time, the clamping force of the isolation member 26 can be adjusted by the threads to adapt to the installation requirements of filter elements 1 with different thicknesses.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for producing high-efficiency filter cartridges for electrolyte from copper foil, characterized in that: The system includes a filter element and a housing assembly. The filter element has a circular cross-section and consists of an inner filter element, a middle filter element, and an outer filter element, arranged sequentially from the inside to the outside. The housing assembly includes a sleeve for being spaced within the hollow outer filter element, a first end cap covering the upper and lower ends of the sleeve, a second end cap, a separator, and a porous water pipe. The first end cap has a pre-drilled inlet, and the water pipe is inserted into the inlet, corresponding to the inner filter element. The second end cap has an outlet, corresponding to the outer filter element. The separator blocks the filter element facing the second end cap. The inner filter element has a pore diameter of 1.2-2 μm, the middle filter element has a pore diameter of 0.8-1.2 μm, and the outer filter element has a pore diameter of 0.5-0.6 μm.

2. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The inner filter element includes, but is not limited to, high-strength polyester or nylon filter elements.

3. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: Carbon powder is added to the middle layer filter element.

4. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The outer filter element includes, but is not limited to, a high-precision polytetrafluoroethylene filter screen.

5. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: A gap of at least 1 cm is reserved between the outer filter element and the sleeve.

6. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The second end cap protrudes, creating a gap of at least 3 cm between the second end cap and the spacer.

7. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The diameter of the greywater pipe is smaller than the diameter of the inner filter element, and the porous structure of the greywater pipe extending into the inner filter element has a funnel-shaped diffuser.

8. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The first end cap and the second end cap are sealed and fixed on the sleeve.

9. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The greywater pipe is sealed to the liquid inlet.

10. The device for producing high-efficiency filter cartridges for copper foil electrolyte according to claim 1, characterized in that: The bottom of the greywater pipe is solid and has threads on its outer surface. The separator is threaded and sealed to the bottom of the greywater pipe, so that the separator is tightly attached to the filter element.

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