A sealing assembly special for cation exchange membrane installation

Abstract

This utility model relates to the field of electrochemical equipment installation and sealing, specifically to a dedicated sealing assembly for a cation exchange membrane installed on a cylindrical electrolytic anode device. It includes sealing rings at both ends of the anode and a horizontal axial sealing assembly, wherein the horizontal axial sealing assembly comprises three parts: a lower groove seal, a middle X-shaped seal, and an upper pressure cap seal. This dedicated sealing component aims to ensure the sealing and stability of the cation exchange membrane with the anode device under expansion and contraction conditions, while also improving the ease of cation exchange membrane installation. It ensures the safe and stable operation of the anode device under various operating conditions, including installation, expansion, and contraction.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical equipment installation and sealing, specifically to a dedicated sealing assembly for a cation exchange membrane installed on a cylindrical electrolytic anode device. This dedicated seal aims to ensure the sealing and stability of the cation exchange membrane with the anode device under both expansion and contraction conditions, while also improving the ease of installation. It ensures the safe and stable operation of the anode device under various operating conditions, including installation, expansion, and contraction. Background Technology

[0002] In the electrolysis industry, cation exchange membranes are widely used to separate the cathode and anode regions in electrolytic cells, allowing cations to pass through while blocking anions, thereby enabling electrolysis that converts between different solution systems, improving current efficiency and product quality. This is particularly useful for converting copper chloride solution systems to copper sulfate solution systems. However, cation exchange membranes have a planar organic structure, making direct installation on cylindrical metal anodes impossible. Furthermore, the significant expansion and contraction of cation exchange membranes during transitions between dry and wet states poses a major sealing problem. Traditional methods involve sealing the membranes with adhesives, both between the membrane and the anode surface. However, due to the poor adhesion of cation exchange membranes, the adhesive surfaces are prone to detachment and leakage, leading to membrane failure. In addition, the expansion and contraction of cation exchange membranes under different operating conditions cause deformation, bubbling, wrinkling, and tearing, significantly impacting the lifespan of both the cation exchange membrane and the anode device.

[0003] To address the aforementioned issues, this invention proposes a dedicated sealing assembly for cation exchange membrane installation. This assembly achieves dynamic sealing between the cation exchange membrane and the anode device, meeting the sealing requirements of the cation exchange membrane under all operating conditions. This significantly extends the service life of the cation exchange membrane and reduces operating and maintenance costs. Utility Model Content

[0004] This utility model relates to the field of electrochemical equipment installation and sealing, specifically to a dedicated sealing assembly for a cation exchange membrane installed on a cylindrical electrolytic anode device. This dedicated seal aims to ensure the sealing and stability of the cation exchange membrane with the anode device under both expansion and contraction conditions, while also improving the ease of installation. It ensures the safe and stable operation of the anode device under various operating conditions, including installation, expansion, and contraction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a special sealing assembly for cation exchange membrane installation, comprising two parts: sealing rings at both ends of the anode and a horizontal axial sealing assembly.

[0007] Furthermore, the sealing rings at both ends of the anode are circular rings with an annular groove in the middle and a cylindrical intermediate sealing insertion cavity at the overlapping and pressing part of the cation exchange membrane.

[0008] Furthermore, the horizontal axial sealing assembly comprises three parts: a lower groove seal, a middle X-shaped seal, and an upper gland seal. The middle X-shaped seal is inserted into the cylindrical middle seal insertion cavity of the sealing rings at both ends of the anode.

[0009] Furthermore, the cross-sectional shape of the intermediate X-shaped seal is X-shaped, but it can also be O-shaped or square.

[0010] The special sealing assembly for cation exchange membrane installation provided by this utility model can achieve the following beneficial effects:

[0011] (1) Easy to install and simple process

[0012] Traditional bonding methods involve a series of cumbersome steps, including grinding the anode surface, cleaning and degreasing the anode surface, mixing the adhesive, applying the adhesive, fixing the cation exchange membrane, and curing the adhesive. Using this sealing assembly, the sealing installation of the cation exchange membrane can be completed in just two steps: installing the sealing assembly and fixing the cation exchange membrane. This greatly improves the convenience of installation, simplifies the installation process, and saves installation time.

[0013] (2) Stable sealing effect, suitable for use throughout the project.

[0014] Traditional bonding methods for fabricating anodes often result in poor adhesion of the cation exchange membrane, leading to frequent detachment and leakage between membranes and between the membrane and the anode surface, causing membrane failure. Furthermore, the expansion and contraction of the cation exchange membrane under different operating conditions cause deformation, bubbling, wrinkling, and tearing, significantly impacting the lifespan of both the cation exchange membrane and the anode device. Using this sealing assembly, a good sealing surface is provided between the cation exchange membrane and the sealant and anode device, ensuring sufficient movement and space for the cation exchange membrane. This allows for safe and stable operation under all conditions, greatly extending the lifespan of the cation exchange membrane and anode device, and reducing production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this utility model. For those skilled in the art, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the sealing ring structure at both ends of the anode of this utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the sealing annular groove at both ends of the anode of this utility model.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the cylindrical sealing insertion cavity with sealed ends at both ends of the anode of this utility model.

[0020] Figure 5 This is a schematic cross-sectional view of the horizontal axial sealing assembly of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Sealing rings at both ends of the anode; 2. Horizontal axial sealing assembly, 21. Lower groove seal, 22. Middle X-shaped seal, 23. Upper gland seal. Detailed Implementation

[0023] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Example 1

[0025] Special sealing assembly for cation exchange membrane installation for DN80 electrolytic anodes.

[0026] 2. In this embodiment: the sealing rings at both ends of the anode have a diameter of 90mm, a height of 10mm, a width of 6mm, an annular groove width of 1mm, an annular groove height of 8mm, and a cylindrical middle sealing insertion cavity diameter of 4mm; the lower groove inner sealing length is 1200mm, width is 6mm, and height is 3mm; the middle X-shaped seal has a diameter of 3mm; and the upper pressure cap seal has a length of 1200mm, width is 10mm, and height is 3mm. Different types of rubber are selected for fabrication based on the chemical composition, temperature, acidity, and pressure parameters of the medium at both ends of the cation exchange membrane.

[0027] Example 2

[0028] A dedicated sealing assembly for installing cation exchange membranes for DN125 electrolytic anodes.

[0029] In this embodiment: the sealing rings at both ends of the anode have a diameter of 140mm, a height of 12mm, a width of 6mm, an annular groove width of 1mm, a height of 10mm, and a cylindrical middle sealing insertion cavity diameter of 4mm; the lower groove inner sealing has a length of 1500mm, a width of 6mm, and a height of 3mm; the middle X-shaped seal has a diameter of 3mm; and the upper pressure cap seal has a length of 1500mm, a width of 14mm, and a height of 3mm. Different types of rubber are selected for fabrication based on the chemical composition, temperature, acidity, and pressure parameters of the medium at both ends of the cation exchange membrane.

[0030] The various embodiments provided by this utility model can be combined with each other in any way as needed, and the technical solutions obtained by such combinations are also within the scope of this utility model.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, then this utility model also includes these modifications and variations.

Claims

1. A sealing assembly specifically for cation exchange membrane installation, characterized in that, include: The anode consists of two parts: a sealing ring at both ends (1) and a horizontal axial sealing assembly (2).

2. The sealing assembly for cation exchange membrane installation according to claim 1, characterized in that, The sealing rings (1) at both ends of the anode are circular rings with an annular groove in the middle and a cylindrical intermediate sealing insertion cavity at the overlapping part of the cation exchange membrane.

3. The sealing assembly for cation exchange membrane installation according to claim 1, characterized in that, The horizontal axial sealing assembly (2) includes three parts: a lower groove inner seal (21), a middle X-shaped seal (22), and an upper pressure cap seal (23). The middle X-shaped seal is inserted into the cylindrical middle seal insertion cavity of the sealing rings at both ends of the anode.

4. A sealing assembly for cation exchange membrane installation according to claim 3, characterized in that, The cross-sectional shape of the intermediate X-type seal (22) is X-shaped, O-shaped or square.

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