A sealing gasket and an electrolytic cell having the same.

Abstract

The purpose of the utility model is to provide a sealing gasket and an electrolytic cell having the same, comprising a body, wherein the body comprises an outer ring and an inner ring, wherein the clamping end of the outer ring is arranged opposite to the clamping end of the inner ring and forms a clamping cavity, wherein the clamping cavity clamps the edge of the diaphragm; the closed end of the outer ring is fixed as a whole with the closed end of the inner ring and forms a closed section, wherein the closed section is arranged on the outside of the body and blocks the clamping cavity; wherein the clamping cavity extends obliquely downward to form an extension cavity. The utility model relates to the technical field of electrolytic cells, and can clamp and fix the edge of the diaphragm in the clamping cavity formed by the outer ring and the inner ring; and the extension cavity obliquely extending at the bottom of the clamping cavity cooperates with the clamping cavity to bend and clamp the edge of the diaphragm, thereby further strengthening the fixation of the diaphragm. At the same time, when clamping the edge, an interlaced tooth structure is used to strengthen the fixation. The sealing gasket can still completely fix the diaphragm after long-term use.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a sealing gasket and an electrolytic cell having the same. Background Art

[0002] The electrolytic cell is usually composed of several or even hundreds of electrolytic cells, which are composed of gaskets, electrodes, gaskets, diaphragm fixing rings, diaphragms and their own frames. The gaskets play a core role in the sealing between the cells and between the diaphragms and the plate frames. When used for a long time, the life of the gaskets is difficult to predict, and the seals are prone to failure and deformation. Therefore, the traditional method of fixing the diaphragms is difficult to meet the fixing requirements. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a sealing gasket and an electrolytic cell having the same, which solves the problem that the existing electrolytic cell sealing gasket is difficult to effectively fix the diaphragm after deformation.

[0004] To achieve the above object, the utility model is implemented by the following technical scheme: a sealing gasket, comprising a body, the body having an opening, a diaphragm assembled inside the body, the body comprising:

[0005] The outer ring includes an outer ring clamping end and an outer ring closed end;

[0006] The inner ring includes an inner ring clamping end and an inner ring closed end;

[0007] The outer ring clamping end and the inner ring clamping end are arranged opposite to each other and form a clamping cavity, and the clamping cavity clamps the edge of the diaphragm; the outer ring closed end and the inner ring closed end are fixed as a whole and form a closed section, and the closed section is arranged on the outside of the body and blocks the clamping cavity;

[0008] The clamping cavity extends obliquely downward to form an extension cavity.

[0009] Preferably, an inner angle α is formed between the extension cavity and the clamping cavity, and 90°<α<180°.

[0010] Preferably, a slope A is formed on the inner wall surface of the outer ring close to the closed end of the outer ring, and a slope B is formed on the inner wall surface of the inner ring close to the clamping end of the inner ring, and the slope A and the slope B constitute an extension cavity.

[0011] Preferably, a tooth structure is arranged in the clamping cavity, and the tooth structure includes upper teeth and lower teeth, the upper teeth are formed on the inner wall surface of the outer ring clamping end, and the lower teeth are formed on the inner wall surface of the inner ring clamping end, and the upper teeth and the lower teeth are staggered.

[0012] Preferably, the upper teeth include upper protrusions, and an engagement groove is formed between two adjacent upper protrusions; the lower teeth include lower protrusions, and the lower protrusions are formed in the engagement groove.

[0013] Preferably, an angle β is formed between the upper protrusion and the outer ring, and between the lower protrusion and the inner ring, and the angle β is 30°<β<90°.

[0014] Preferably, an outer ring closed protrusion is provided on the side of the outer ring closed end away from the outer ring clamping end, and the connection between the outer ring closed protrusion and the outer ring closed end is smoothly transitioned; an inner ring closed protrusion is provided on the side of the inner ring closed end away from the inner ring clamping end, and the connection between the inner ring closed protrusion and the inner ring closed end is smoothly transitioned.

[0015] Preferably, the outer wall surfaces of the outer ring clamping end and the inner ring clamping end are both provided with a first protrusion.

[0016] Preferably, the outer wall surfaces of the outer ring closed end and the inner ring closed end are both provided with a second protrusion.

[0017] In addition, the present application also provides an electrolytic cell including an electrolytic cell and any of the sealing gaskets described above.

[0018] Beneficial Effects

[0019] By using a sealing gasket and an electrolytic cell having the same provided by the utility model, the edge of the diaphragm can be arranged in the clamping cavity formed by the outer ring and the inner ring for clamping and fixing; and the extension cavity extending obliquely at the bottom of the clamping cavity cooperates with the clamping cavity to bend and clamp the edge of the diaphragm, further strengthening the fixation of the diaphragm. At the same time, when clamping the edge, a staggered tooth structure is used to strengthen the fixation. The sealing gasket can still completely fix the diaphragm after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the main view of the sealing gasket body of the utility model;

[0021] Figure 2 For this utility model Figure 1 Cross-section at AA;

[0022] Figure 3 For this utility model Figure 1 Cross-section at BB;

[0023] Figure 4 This is a main body front view of the utility model after the diaphragm is installed on the sealing gasket body;

[0024] Figure 5 For this utility model Figure 4 Cross-section at CC;

[0025] Figure 6 For this utility model Figure 4 Cross-section at DD.

[0026] Explanation of symbols in the figure

[0027] 1. Main body, 11. Outer ring, 11a. Outer ring clamping end, 11b. Outer ring closed end, 11c. Outer ring closed protrusion, 12. Inner ring, 12a. Inner ring clamping end, 12b. Inner ring closed end, 12c. Inner ring closed protrusion, 13. Upper protrusion, 14. Engaging groove, 15. Lower protrusion, 16. Inclined surface A, 17. Inclined surface B, 18. Extension cavity, 2. Opening, 3. Diaphragm, 4. Clamping cavity, 5. First protrusion, 6. Second protrusion. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.

[0029] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0030] Reference Figure 1-6 The sealing gasket of this embodiment and the electrolytic cell having the same will be described.

[0031] In a first embodiment, an electrolytic cell (not shown) and a sealing gasket are included.

[0032] In another embodiment, Figure 4-5 As shown, the sealing gasket includes a body 1, an opening 2 is formed on the body 1, a diaphragm 3 is assembled inside the body 1, and the body 1 includes an outer ring 11 and an inner ring 12; the outer ring 11 and the inner ring 12 are preferably formed of an alkali-resistant material. The materials that can be used include natural rubber (NR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), butadiene rubber (BR), acrylonitrile-butadiene rubber (NBR), silicone rubber (SR), ethylene-propylene rubber (EPT), ethylene-propylene-diene rubber (EPDM), fluororubber (FR), isobutylene-isoprene rubber (IIR), polyurethane rubber (UR), chlorosulfonated polyethylene rubber (CSM), etc.

[0033] like Figure 2 As shown, the outer ring 11 includes an outer ring clamping end 11a and an outer ring closed end 11b; the inner ring 12 includes an inner ring clamping end 12a and an inner ring closed end 12b;

[0034] The outer ring clamping end 11a and the inner ring clamping end 12a are arranged opposite to each other and form a clamping cavity 4, which clamps the edge of the diaphragm 3. The depth of the clamping cavity 4 is 10mm-20mm, which can clamp the edge of the diaphragm 3; the width is 3-5mm. The outer ring closed end 11b and the inner ring closed end 12b are fixed as a whole and form a closed section, which is arranged on the outside of the body 1 and blocks the clamping cavity 4;

[0035] In specific implementation, Figure 3 and Figure 6 As shown, the opening 2 passes through the closed section.

[0036] In one embodiment, the clamping cavity 4 extends obliquely downward to form an extension cavity 18. When the edge of the diaphragm 3 is inserted into the clamping cavity 4, it extends into the extension cavity 18, forming a bending and pressing of the diaphragm 3 to improve the clamping stability.

[0037] In this embodiment, it needs to be explained in detail that a slope A16 is formed on the inner wall surface of the outer ring 11 close to the outer ring closed end 11b, and a slope B17 is formed on the inner wall surface of the inner ring 12 close to the inner ring clamping end 12a. The slope A16 and the slope B17 constitute an extension cavity 18.

[0038] Further, such as Figure 3 As shown, an inner angle α is formed between the extension cavity 18 and the clamp cavity 4, 90°<α<180°. The inclined design of the clamp cavity 4 and the extension cavity 18 can facilitate the diaphragm 3 to smoothly enter the extension cavity 18 when extended.

[0039] In an practicable manner, a tooth structure is provided in the clamping cavity 4 to enhance the fixing effect on the diaphragm 3. The tooth structure includes upper teeth and lower teeth, the upper teeth are formed on the inner wall surface of the outer ring clamping end 11a, and the lower teeth are formed on the inner wall surface of the inner ring clamping end 12a, and the upper teeth and the lower teeth are arranged alternately.

[0040] The upper teeth include upper protrusions 13, and an engagement groove 14 is formed between two adjacent upper protrusions 13; the lower teeth include lower protrusions 15, and the lower protrusions are formed in the engagement grooves 14. When the diaphragm 3 is inserted into the clamping cavity 4 and clamped by the outer ring clamping end 11a and the inner ring clamping end 12a, the upper protrusion 13 at the upper end and the lower protrusion 15 at the lower end cooperate to press the diaphragm 3, thereby improving the clamping stability of the diaphragm 3.

[0041] Further, such as Figure 3 As shown, an angle β is formed between the upper protrusion 13 and the outer ring 11, and between the lower protrusion 15 and the inner ring 12, wherein 30°<β<90°.

[0042] In an optional embodiment, an outer ring closed protrusion 11c is provided on the side of the outer ring closed end 11b away from the outer ring clamping end 11a, and the connection between the outer ring closed protrusion 11c and the outer ring closed end 11b is smoothly transitioned; an inner ring closed protrusion 12c is provided on the side of the inner ring closed end 12b away from the inner ring clamping end 12a, and the connection between the inner ring closed protrusion 12c and the inner ring closed end 12b is smoothly transitioned. When the plate frame is clamped with the sealing gasket, the outer ring closed protrusion 11c and the inner ring closed protrusion 12c protrude from the plate frame. Due to the strong clamping, the sealing gasket is squeezed and deformed. At this time, the outer ring closed protrusion 11c and the inner ring closed protrusion 12c are forced to turn outward to block the gap between the plate frame and the sealing gasket.

[0043] In an optional embodiment, the outer wall surfaces of the outer ring clamping end 11a and the inner ring clamping end 12a are both provided with a first protrusion 5, and the first protrusion 5 covers the upper protrusion 13. The outer wall surfaces of the outer ring closed end 11b and the inner ring closed end 12b are both provided with a second protrusion 6, and the second protrusion 6 covers the lower protrusion 15.

[0044] When the plate frame is clamped with the sealing gasket, the force first acts on the first protrusion 5 and the second protrusion 6, so that the extrusion force can be evenly applied inward to the tooth structure and the closed section. This can enhance the clamping stability of the diaphragm 3 and improve the fixing effect of the outer ring closed end 11b and the inner ring closed end 12b.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing gasket, comprising a body (1), wherein the body (1) is provided with an opening (2), and a diaphragm (3) is assembled inside the body (1), characterized in that: The body (1) comprises: An outer ring (11), comprising an outer ring clamping end (11a) and an outer ring closed end (11b); The inner ring (12) comprises an inner ring clamping end (12a) and an inner ring closed end (12b); The outer ring clamping end (11a) and the inner ring clamping end (12a) are arranged opposite to each other and form a clamping cavity (4), and the clamping cavity (4) clamps the edge of the diaphragm (3); the outer ring closed end (11b) and the inner ring closed end (12b) are fixed as a whole and form a closed section, and the closed section is arranged on the outside of the body (1) and blocks the clamping cavity (4); The clamping cavity (4) extends obliquely downward to form an extension cavity (18).

2. A sealing gasket according to claim 1, characterized in that: An internal angle α is formed between the extension cavity (18) and the clamp cavity (4), and the angle is 90°<α<180°.

3. A sealing gasket according to claim 2, characterized in that: The inner wall surface of the outer ring (11) is formed with a slope A (16) on one side close to the outer ring closed end (11b), and the inner wall surface of the inner ring (12) is formed with a slope B (17) on one side close to the inner ring clamping end (12a), and the slope A (16) and the slope B (17) constitute an extension cavity (18).

4. A sealing gasket according to any one of claims 1 to 3, characterized in that: A tooth structure is arranged in the clamping cavity (4), and the tooth structure comprises upper teeth and lower teeth, the upper teeth are formed on the inner wall surface of the outer ring clamping end (11a), and the lower teeth are formed on the inner wall surface of the inner ring clamping end (12a), and the upper teeth and the lower teeth are arranged alternately.

5. A sealing gasket according to claim 4, characterized in that: The upper teeth include upper protrusions (13), and an engagement groove (14) is formed between two adjacent upper protrusions (13); the lower teeth include lower protrusions (15), and the lower protrusions are formed in the engagement groove (14).

6. A sealing gasket according to claim 5, characterized in that: An included angle β is formed between the upper protrusion (13) and the outer ring (11), and between the lower protrusion (15) and the inner ring (12), and the angle is 30°<β<90°.

7. A sealing gasket according to claim 1, characterized in that: An outer ring closed protrusion (11c) is provided on the side of the outer ring closed end (11b) away from the outer ring clamping end (11a), and the connection between the outer ring closed protrusion (11c) and the outer ring closed end (11b) is smoothly transitioned; An inner ring closed protrusion (12c) is provided on the side of the inner ring closed end (12b) away from the inner ring clamping end (12a), and the connection between the inner ring closed protrusion (12c) and the inner ring closed end (12b) is smoothly transitioned.

8. The sealing gasket according to claim 1, characterized in that: The outer wall surfaces of the outer ring clamping end (11a) and the inner ring clamping end (12a) are both provided with a first protrusion (5).

9. The sealing gasket according to claim 1, characterized in that: The outer wall surfaces of the outer ring closed end (11b) and the inner ring closed end (12b) are both provided with a second protrusion (6).

10. An electrolytic cell, characterized in that: The invention comprises an electrolytic cell and a sealing gasket as claimed in any one of claims 1 to 9.

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