Diaphragm positioning and mounting structure and alkaline electrolytic cell

Abstract

The utility model relates to the technical field of electrolytic baths, and discloses a diaphragm positioning and mounting structure and an alkaline electrolytic bath, the diaphragm positioning and mounting structure comprises: a first polar plate, the lower surface of which is provided with a first positioning groove; a second positioning groove is formed in the upper surface of the second polar plate; the diaphragm is arranged between the first polar plate and the second polar plate, the outer edge of the diaphragm extends downwards to form an embedded part, and the embedded part is mounted in the second positioning groove; the sealing gasket comprises a main body made of a modified polytetrafluoroethylene material and an elastic part made of a rubber material, the elastic part is arranged on the side, close to the diaphragm, of the main body, and the upper end of the elastic part extends out of the upper surface of the main body to be installed in the first positioning groove; and the lower end of the elastic part extends out of the lower surface of the main body and is mounted in the second positioning groove. According to the diaphragm positioning and mounting structure and the alkaline electrolytic cell, the diaphragm is stably positioned, and the sealing effect of the sealing gasket is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a diaphragm positioning and installation structure and an alkaline electrolytic cell. Background Art

[0002] Alkaline electrolyzers have various structural forms for producing hydrogen and oxygen, specifically including an installation structure that uses two electrode plates and a sealing gasket to clamp the diaphragm, wherein the diaphragm is directly overlapped on the sealing gasket to achieve the positioning of the diaphragm and the sealing effect of the sealing gasket. Since the surfaces of the diaphragm and the sealing gasket are both flat, it is easy to cause the positioning of the diaphragm to be unstable and slip, affecting the normal function of blocking hydrogen and oxygen, and the sealing effect of the sealing gasket is poor. Therefore, the technical solution of the present application is urgently needed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a diaphragm positioning and installation structure and an alkaline electrolytic cell, which can ensure stable positioning of the diaphragm and good sealing effect of the sealing gasket.

[0004] In order to achieve the above-mentioned object, the first aspect of the present invention provides a diaphragm positioning and installation structure, comprising:

[0005] A first electrode plate having a first positioning groove on its lower surface;

[0006] a second electrode plate, disposed below the first electrode plate, the upper surface of the second electrode plate having a second positioning groove;

[0007] a diaphragm disposed between the first electrode plate and the second electrode plate, wherein an outer edge of the diaphragm extends downward to form an embedded portion, and the embedded portion is installed in the second positioning groove; and

[0008] A sealing gasket is arranged between the first electrode plate and the second electrode plate and is located at the outer edge of the diaphragm. The sealing gasket includes a main body made of modified polytetrafluoroethylene and an elastic part made of rubber. The elastic part is arranged on the side of the main body close to the diaphragm. The upper end of the elastic part extends out of the upper surface of the main body and is installed in the first positioning groove. The lower end of the elastic part extends out of the lower surface of the main body and is installed in the second positioning groove, and is used to compress the embedded part.

[0009] In some embodiments, the elastic portion is connected to the main body by adhesive.

[0010] In some embodiments, the elastic portion includes a first mounting portion, a connector and a second mounting portion. The first mounting portion and the second mounting portion are arranged in parallel and spaced apart. The upper end of the first mounting portion is connected to the lower end of the second mounting portion through the connector.

[0011] In some embodiments, the lower end of the first mounting portion extends out of the lower surface of the main body and is mounted in the second positioning groove, and the upper end of the second mounting portion extends out of the upper surface of the main body and is mounted in the first positioning groove.

[0012] In some embodiments, the first mounting portion and the second mounting portion are both inclined, and the angle between them and the horizontal direction is 30-60 degrees.

[0013] In some embodiments, the first positioning groove is arranged at an angle and is adapted to the second mounting portion, and the second positioning groove is arranged at an angle and is adapted to the first mounting portion.

[0014] In some embodiments, the upper end of the first mounting portion is flush with the upper surface of the main body, and the lower end of the second mounting portion is flush with the lower surface of the main body.

[0015] In some embodiments, the thickness of the diaphragm is less than the thickness of the body.

[0016] In some embodiments, the lower surface of the first electrode plate further has a plurality of first sealing grooves, which are correspondingly arranged above the main body, and the upper surface of the second electrode plate further has a plurality of second sealing grooves, which are correspondingly arranged below the main body.

[0017] A second aspect of the present invention provides an alkaline electrolytic cell, comprising the diaphragm positioning and installation structure of the embodiment of the first aspect.

[0018] The utility model provides a diaphragm positioning and mounting structure and an alkaline electrolytic cell. Compared with the prior art, the utility model has the following advantages:

[0019] The outer edge of the diaphragm is extended downward to form an embedded portion, and the embedded portion is installed in the second positioning groove, so that the diaphragm is positioned stably and is not prone to slippage; the sealing gasket includes a main body and an elastic portion, and the lower end of the elastic portion extends out of the lower surface of the main body and is installed in the second positioning groove, and is used to press the embedded portion, so that the sealing effect of the sealing gasket is good through the elastic portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the cross-section of the partial structure of the diaphragm positioning and installation structure provided in an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of a partially exploded cross-section of the diaphragm positioning and mounting structure provided in an embodiment of the present utility model.

[0022] In the figure: 100, diaphragm positioning and mounting structure; 1, first electrode plate; 11, first positioning groove; 12, first sealing groove; 2, second electrode plate; 21, second positioning groove; 22, second sealing groove; 3, diaphragm; 31, embedded part; 4, sealing gasket; 41, main body; 42, elastic part; 421, first mounting part; 422, connector; 423, second mounting part. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] It should be understood that in the description of this application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. That is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1-2 As shown, a diaphragm positioning and mounting structure 100 according to an embodiment of the present invention includes a first electrode plate 1, a second electrode plate 2, a diaphragm 3 and a sealing gasket 4. During operation, the first electrode plate 1 and the second electrode plate 2 are in a clamped state.

[0027] The lower surface of the first electrode plate 1 has a first positioning groove 11 .

[0028] The second electrode plate 2 is disposed below the first electrode plate 1, and has a second positioning groove 21 on its upper surface. The first electrode plate 1 and the second electrode plate 2 mainly function to conduct electrons and block cathode alkaline solution and anode alkaline solution.

[0029] The diaphragm 3 is disposed between the first electrode plate 1 and the second electrode plate 2. The outer edge of the diaphragm 3 extends downward to form an embedded portion 31, which is installed in the second positioning groove 21. The diaphragm 3 is used to separate the generated hydrogen and oxygen and has high ionic conductivity, facilitating the transfer of hydroxide ions from the cathode to the anode.

[0030] The sealing gasket 4 is provided between the first electrode plate 1 and the second electrode plate 2 and is located on the outer edge of the diaphragm 3. The sealing gasket 4 includes a main body 41 made of modified polytetrafluoroethylene and an elastic portion 42 made of rubber. The elastic portion 42 is provided on the side of the main body 41 close to the diaphragm 3. The upper end of the elastic portion 42 extends out of the upper surface of the main body 41 and is installed in the first positioning groove 11. The lower end of the elastic portion 42 extends out of the lower surface of the main body 41 and is installed in the second positioning groove 21, and is used to compress the embedded portion 31. The sealing gasket 4 provides a sealing effect between the first electrode plate 1 and the second electrode plate 2.

[0031] Based on the above-mentioned structural setting, the outer edge of the diaphragm 3 extends downward to form an embedded portion 31, and the embedded portion 31 is installed in the second positioning groove 21, so that the diaphragm 3 is positioned stably and is not prone to slippage; the sealing gasket 4 includes a main body 41 and an elastic portion 42, the upper end of the elastic portion 42 extends out of the upper surface of the main body 41 and is installed in the first positioning groove 11, and the lower end of the elastic portion 42 extends out of the lower surface of the main body 41 and is installed in the second positioning groove 21, and the elastic portion 42 is used to ensure that the sealing effect of the sealing gasket 4 is good.

[0032] In one embodiment, the main body 41 is made of modified polytetrafluoroethylene, which has good corrosion resistance; the elastic part 42 is made of rubber, which has good elasticity, and the elastic part 42 is connected to the main body 41 by glue.

[0033] like Figure 2 As shown, in one embodiment, the elastic portion 42 includes a first mounting portion 421, a connecting body 422 and a second mounting portion 423. The first mounting portion 421 and the second mounting portion 423 are arranged in parallel and spaced apart. The upper end of the first mounting portion 421 is connected to the lower end of the second mounting portion 423 through the connecting body 422.

[0034] Furthermore, the lower end of the first mounting portion 421 extends beyond the lower surface of the main body 41 and is mounted in the second positioning groove 21, while the upper end of the second mounting portion 423 extends beyond the upper surface of the main body 41 and is mounted in the first positioning groove 11. When the first electrode plate 1 and the second electrode plate 2 are clamped together, the first mounting portion 421 and the second mounting portion 423 are in a squeezed state, thereby improving the sealing performance of the sealing gasket 4.

[0035] Furthermore, the first mounting portion 421 and the second mounting portion 423 are both arranged at an angle, so that the first mounting portion 421 and the second mounting portion 423 are inclined in one direction when squeezed, so as to keep the structure of the elastic portion 42 regular. For example, the angle between the inclined direction of the first mounting portion 421 and the second mounting portion 423 and the horizontal direction is 30-60°.

[0036] Furthermore, the first positioning groove 11 is inclined and matched with the second mounting portion 423 , and the second positioning groove 21 is inclined and matched with the first mounting portion 421 , which is convenient for the installation of the first mounting portion 421 and the second mounting portion 423 .

[0037] In one embodiment, the upper end of the first mounting portion 421 is flush with the upper surface of the main body 41, so that the upper end of the first mounting portion 421 and the upper surface of the main body 41 are pressed simultaneously. The lower end of the second mounting portion 423 is flush with the lower surface of the main body 41, so that the lower end of the second mounting portion 423 and the lower surface of the main body 41 are pressed simultaneously.

[0038] Illustratively, the thickness of the diaphragm 3 is smaller than the thickness of the main body 41 . When the first electrode plate 1 and the second electrode plate 2 are in a clamped state, the sealing gasket 4 receives an extrusion force, while the diaphragm 3 is not squeezed, thereby reducing the risk of damage to the diaphragm 3 .

[0039] In one embodiment, the lower surface of the first electrode plate 1 further comprises a plurality of first sealing grooves 12, which are correspondingly located above the main body 41. The upper surface of the second electrode plate 2 further comprises a plurality of second sealing grooves 22, which are correspondingly located below the main body 41. When the first electrode plate 1 and the second electrode plate 2 are in a clamped state, the upper surface of the main body 41 is squeezed into the first sealing grooves 12, and the lower surface of the main body 41 is squeezed into the second sealing grooves 22, thereby further improving the sealing effect of the sealing gasket 4.

[0040] Another embodiment of the alkaline electrolytic cell of the present invention includes the diaphragm positioning and mounting structure 100 of the above embodiment. In the alkaline electrolytic cell, the diaphragm 3 can be positioned stably, and the sealing gasket 4 has a good sealing effect.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A diaphragm positioning and installation structure, characterized in that: include: A first electrode plate having a first positioning groove on its lower surface; a second electrode plate, disposed below the first electrode plate, the upper surface of the second electrode plate having a second positioning groove; a diaphragm disposed between the first electrode plate and the second electrode plate, wherein an outer edge of the diaphragm extends downward to form an embedded portion, and the embedded portion is installed in the second positioning groove; as well as A sealing gasket is arranged between the first electrode plate and the second electrode plate and is located at the outer edge of the diaphragm. The sealing gasket includes a main body made of modified polytetrafluoroethylene and an elastic part made of rubber. The elastic part is arranged on the side of the main body close to the diaphragm. The upper end of the elastic part extends out of the upper surface of the main body and is installed in the first positioning groove. The lower end of the elastic part extends out of the lower surface of the main body and is installed in the second positioning groove, and is used to compress the embedded part.

2. The diaphragm positioning and installation structure according to claim 1, characterized in that: The elastic part is connected to the main body by glue.

3. The diaphragm positioning and installation structure according to claim 2, characterized in that: The elastic portion includes a first mounting portion, a connector and a second mounting portion. The first mounting portion and the second mounting portion are arranged in parallel and spaced apart. The upper end of the first mounting portion is connected to the lower end of the second mounting portion through the connector.

4. The diaphragm positioning and installation structure according to claim 3, characterized in that: The lower end of the first mounting portion extends out of the lower surface of the main body and is mounted in the second positioning groove, and the upper end of the second mounting portion extends out of the upper surface of the main body and is mounted in the first positioning groove.

5. The diaphragm positioning and installation structure according to claim 3, characterized in that: The first mounting portion and the second mounting portion are both inclined, and the angle between them and the horizontal direction is 30-60 degrees.

6. The diaphragm positioning and installation structure according to claim 5, characterized in that: The first positioning groove is arranged obliquely and is adapted to the second mounting portion, and the second positioning groove is arranged obliquely and is adapted to the first mounting portion.

7. The diaphragm positioning and installation structure according to claim 3, characterized in that: The upper end of the first mounting portion is flush with the upper surface of the main body, and the lower end of the second mounting portion is flush with the lower surface of the main body.

8. The diaphragm positioning and mounting structure according to claim 1, characterized in that: The thickness of the diaphragm is smaller than the thickness of the body.

9. The diaphragm positioning and installation structure according to claim 1, characterized in that: The lower surface of the first electrode plate further has a plurality of first sealing grooves, which are correspondingly arranged above the main body. The upper surface of the second electrode plate further has a plurality of second sealing grooves, which are correspondingly arranged below the main body.

10. An alkaline electrolytic cell, characterized in that: It comprises the diaphragm positioning and mounting structure according to any one of claims 1 to 9.

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