Flexible conductive sealing structure for electro-deposition back-pull anode and electrolytic bath

Abstract

The utility model discloses a flexible conductive sealing structure for an electro-deposition back-pull anode and an electrolytic bath, which comprises the electrolytic bath and an anode plate laid at the bottom of the electrolytic bath, and a flexible conductive sealing piece is mounted between the anode plate and the electrolytic bath; or a flexible conductive part is mounted between the anode plate and the electrolytic bath, a sealing part is arranged between the flexible conductive part and the anode plate along the edge, and the problem of rigid attachment between the back-pull type anode plate and the electrolytic bath is solved by arranging conductive and flexible sealing parts between the electrolytic bath and the anode plate.

Description

Technical Field

[0001] This utility model relates to the field of titanium anode electrodeposition technology, specifically a flexible conductive sealing structure for electrodeposition of a back-pull anode and an electrolytic cell. Background Technology

[0002] In electrodeposition processes, the connection method between the back-pull anode plate and the electrolytic cell has a crucial impact on the electrodeposition process and product quality. Currently, back-pull anode plates for electrodeposition commonly use a stud torque method to deform the plate surface and rigidly bond it to the electrolytic cell body. This traditional connection method has several drawbacks: Firstly, to ensure a tight fit, a large stud torque is often required; however, high torque easily forms pits on the catalytic surface of the anode plate. These pits alter the electric field distribution during the electrodeposition process, leading to quality problems in the electrodeposited product, such as the common "bubbly" defect, affecting the product's appearance and performance. Secondly, if the stud torque is too low, the anode plate will not fit well with the cell body, resulting in leakage. Leakage not only wastes electrolyte but also causes oxidation and insulation on the back of the titanium plate and the electrolytic cell body during the electrodeposition process, hindering normal current conduction, thus affecting the smooth progress of the electrodeposition reaction, reducing production efficiency, and increasing production costs. Utility Model Content

[0003] This invention provides a flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells, which can solve various problems caused by the rigid bonding between current back-pull anode plates and electrolytic cells.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flexible conductive sealing structure for electrodeposition back-pull anode and electrolytic cell, comprising an electrolytic cell and an anode plate laid at the bottom of the electrolytic cell, wherein a flexible conductive sealing element is installed between the anode plate and the electrolytic cell;

[0005] Alternatively, a flexible conductive element is installed between the anode plate and the electrolytic cell, and a sealing element is provided along the edge between the flexible conductive element and the anode plate. The problem of rigid bonding between the back-pull anode plate and the electrolytic cell is solved by setting a component that can both conduct electricity and provide flexible sealing between the electrolytic cell and the anode plate.

[0006] Preferably, both the flexible conductive seal and the flexible conductive element are plate-shaped, and their dimensions match those of the anode plate, which can achieve good sealing and conductivity.

[0007] Preferably, the flexible conductive seal is made of conductive rubber, conductive silicone, or graphene-modified sealing material, which has stable performance and can be selected from a variety of options.

[0008] Preferably, the flexible conductive element is made of a metal-based flexible conductive material, a carbon-based flexible conductive material, or a conductive polymer-based flexible conductive material.

[0009] Preferably, the sealing element is a frame-shaped structure that can surround the area between the flexible conductive element and the anode plate, thus ensuring a sealing effect.

[0010] Preferably, the anode plate is provided with a plurality of studs arranged along its length on the side facing the electrolytic cell. The studs pass through the flexible conductive seal or the flexible conductive element is connected to the corresponding screw hole on the electrolytic cell. The cooperation between the studs and the screw hole causes the anode plate to compact the flexible conductive element or the flexible conductive seal, thereby improving the conductivity and sealing effect.

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

[0012] With a simple structure, it solves the problems of damage to the catalytic surface of the anode plate, poor adhesion and leakage, and poor quality of electrodeposited products caused by the existing rigid bonding method by setting components that can conduct electricity and provide flexible sealing between the electrolytic cell and the anode plate. By improving sealing and conductivity, it improves the quality of electrodeposited products. It can be made using a variety of existing materials and has great promotional value and applicability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the second embodiment of the present invention.

[0015] Figure label:

[0016] 1. Flexible conductive seal, 2. Flexible conductive component, 3. Anode plate, 4. Stud, 5. Electrolytic cell, 6. Screw hole, 7. Seal. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] This invention aims to solve various problems caused by the rigid bonding between the current back-pull anode plate and the electrolytic cell. For example... Figure 1-2 As shown, the following technical solution is provided: a flexible conductive sealing structure for electrodeposition back-pull anode and electrolytic cell, including electrolytic cell 5 and anode plate 3 laid at the bottom of electrolytic cell 5, wherein a flexible conductive sealing element 1 is installed between anode plate 3 and electrolytic cell 5;

[0019] Alternatively, a flexible conductive element 2 is installed between the anode plate 3 and the electrolytic cell 5, and a sealing element 7 is provided along the edge between the flexible conductive element 2 and the anode plate 3. The problem of rigid bonding between the back-pull anode plate and the electrolytic cell is solved by setting a component that can both conduct electricity and flexibly seal between the electrolytic cell 5 and the anode plate 3.

[0020] Specifically, the anode plate 3 is plate-shaped and is evenly arranged along the bottom of the electrolytic cell 5. Both the flexible conductive seal 1 and the flexible conductive element 2 can evenly conduct current from the electrolytic cell to the back of the anode plate, ensuring uniform current distribution during electrodeposition and avoiding quality problems in the electrodeposited product caused by uneven current, such as bubble-like defects, thereby improving the quality of the electrodeposited product. By ensuring sealing and conductivity performance, the failure rate and defect rate during the electrodeposition process are reduced.

[0021] In this embodiment, both the flexible conductive sealing element 1 and the flexible conductive element 2 are plate-shaped, and their dimensions match those of the anode plate 3, which can achieve good sealing and conductivity.

[0022] In this embodiment, the flexible conductive seal 1 is made of conductive rubber, conductive silicone, or graphene-modified sealing material, offering stable performance and a variety of choices. Conductive rubber typically uses general-purpose rubbers such as natural rubber, styrene-butadiene rubber, and neoprene rubber as a matrix, with conductive fillers such as carbon black, metal powders (e.g., silver powder, copper powder), and carbon fibers added. Conductive silicone uses silicone rubber as a matrix, with conductive fillers such as metal powders and carbon-based fillers (e.g., carbon black, graphite, carbon nanotubes, graphene). The silicone rubber matrix gives conductive silicone excellent high and low temperature resistance, chemical stability, and biocompatibility. Both are common polymer materials with conductive properties.

[0023] Graphene-modified sealing materials are made by adding graphene or graphene-related derivatives to traditional sealing materials. Currently, the market mainly offers graphene-modified rubber sealing materials, graphene-modified polyurethane sealing materials, and graphene-modified polytetrafluoroethylene (PTFE) sealing materials, which can be selected according to actual needs.

[0024] In this embodiment, the flexible conductive component 2 is made of a metal-based flexible conductive material, a carbon-based flexible conductive material, or a conductive polymer-based flexible conductive material, which can be selected as needed. The metal-based flexible conductive material includes metal foil, metal foam, metal fiber, etc., the carbon-based flexible conductive material includes carbon felt, carbon fiber, flexible graphite, etc., and the conductive polymer-based flexible conductive material can include polyacetylene, polyaniline, polypyrrole, polythiophene and its derivatives, etc., all of which are directly purchased and selected from the market.

[0025] In strongly acidic electrolyte environments, rubber materials with good acid resistance can be selected; under high-temperature process conditions, graphite-based sealing materials may be more advantageous. For example, if the electrolyte is weakly alkaline, the sealing element 7 can be made of rubber materials with good alkali resistance. In processes requiring high conductivity, flexible conductive sealing element 1 can be made of metal foil as the conductive material.

[0026] In this embodiment, the sealing element 7 is a frame structure that can surround the area between the flexible conductive element 2 and the anode plate 3, thus ensuring a sealing effect.

[0027] Among them, such as Figure 1-2 As shown, a plurality of studs 4 are arranged along the length of the side of the anode plate 3 facing the electrolytic cell 5. The studs 4 pass through the flexible conductive seal 1 or the flexible conductive seal 2 and are connected to the corresponding screw holes 6 on the electrolytic cell 5. The cooperation between the studs 4 and the screw holes 6 causes the anode plate 3 to press the flexible conductive seal 2 or the flexible conductive seal 1, thereby improving the conductivity and sealing effect. By rotating the studs 4, the anode plate 3 can be pressed against the electrolytic cell 5. At the same time, the flexible conductive seal 2 or the flexible conductive seal 1 needs to have through holes corresponding to the studs 4. The studs 4 are used to connect and tighten the anode plate 3 to the electrolytic cell 5. During the tightening process, the flexible conductive seal 1 will deform to a certain extent, thereby better filling the gap between the anode plate 3 and the electrolytic cell 5, achieving a good sealing and conductivity effect.

[0028] Example 1:

[0029] like Figure 1 As shown, 1mm thick nitrile rubber is selected as the material for the sealing element 7, and a 1.5mm thick titanium fiber layer is used as the conductive material for the flexible conductive element 2. The titanium fiber layer is placed at the bottom of the electrolytic cell, with the holes on the flexible conductive element 2 aligned with the screw holes 6; the sealing element 7 is placed on the outside of the titanium fiber layer, forming a flexible conductive sealing layer. When installing the anode plate 3, the studs 4 on the back of the plate are passed through the screw holes 6 of the flexible conductive element 2 and the electrolytic cell, and placed on the flexible conductive sealing layer. The anode plate is then tightened with bolts at the bottom back of the electrolytic cell under relatively low torque until the anode plate and the nitrile rubber are tightly bonded. This completes the assembly of one anode plate, and other anode plates are installed using the same method.

[0030] Example 2:

[0031] like Figure 2 As shown, the combination of seal 7 and flexible conductive element 2 in Example 1 is replaced with flexible conductive seal 1, while other aspects remain unchanged. Conductive rubber can be used as the material for flexible conductive seal 1.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, in this utility model, descriptions involving terms such as "primary," "secondary," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "primary" or "secondary" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells, comprising an electrolytic cell (5) and an anode plate (3) laid at the bottom of the electrolytic cell (5), characterized in that, A flexible conductive seal (1) is installed between the anode plate (3) and the electrolytic cell (5); Alternatively, a flexible conductive element (2) is installed between the anode plate (3) and the electrolytic cell (5), and a sealing element (7) is provided between the flexible conductive element (2) and the anode plate (3) along the edge.

2. The flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells according to claim 1, characterized in that: The flexible conductive seal (1) and the flexible conductive element (2) are both plate-shaped and their dimensions match those of the anode plate (3).

3. The flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells according to claim 2, characterized in that: The flexible conductive seal (1) is made of conductive silicone, conductive silicone or graphene modified sealing material.

4. The flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells according to claim 2, characterized in that: The flexible conductive component (2) is made of metal-based flexible conductive material, carbon-based flexible conductive material, or conductive polymer-based flexible conductive material.

5. The flexible conductive sealing structure for electrodeposition back-pull anodes and electrolytic cells according to claim 2, characterized in that: The sealing element (7) is a frame structure.

6. The flexible conductive sealing structure for electrodeposition back-pull anode and electrolytic cell according to claim 1, characterized in that: The anode plate (3) facing the electrolytic cell (5) has a number of studs (4) arranged along its length. The studs (4) pass through the flexible conductive seal (1) or the flexible conductive element (2) and are connected to the corresponding screw holes (6) on the electrolytic cell (5).

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