Cathode and anode plate hole site structure

Abstract

The utility model discloses a cathode and anode plate hole site structure which comprises a polar plate structure and a sealing structure, the polar plate structure comprises a plurality of cathode plates and a plurality of anode plates which are sequentially staggered and arranged at intervals, a first liquid through hole is formed in the first side of each cathode plate, a second liquid through hole is formed in the second side of each anode plate, and the first liquid through hole is communicated with the second liquid through hole. The height of the first liquid through hole is the same as that of the second liquid through hole; the sealing structure is connected with the plurality of cathode plates and the plurality of anode plates, so that sealing is formed between the edges of the cathode plates and the anode plates, and a plurality of pole chambers which are communicated through the first liquid through holes and the second liquid through holes are formed between the plurality of cathode plates and the plurality of anode plates; according to the scheme, the gravity influence can be avoided, the electrolyte uniformly flows in the pole chamber, and the electrolysis efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a hole structure of anode and cathode plates. Background Art

[0002] The electrolytic cell consists of a cell body, an anode and a cathode, and most of them use a diaphragm to separate the anode chamber and the cathode chamber. According to the different electrolytes, it can be divided into three categories: aqueous solution electrolytic cell, molten salt electrolytic cell and non-aqueous solution electrolytic cell. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce the desired product. Optimizing the design of the electrolytic cell structure and rationally selecting the electrode and diaphragm materials are the key to improving current efficiency, reducing cell voltage and saving energy consumption.

[0003] The patent with publication number CN101250726B provides a closed electrolytic cell and electrolytic system, which includes: two end plates, an anode assembly, a cathode assembly, a seal and a clamping device; both end plates are provided with liquid flow ports, the anode assembly and the cathode assembly are correspondingly provided with liquid flow through holes, the anode assembly and the cathode assembly are arranged between the two end plates at intervals, and an electrode chamber is formed between the anode assembly and the cathode assembly, and seals are arranged at the contact points between the anode assembly, the cathode assembly and the end plates, and the anode assembly, the cathode assembly and the end plates are compressed by the clamping device to form a closed structure; wherein, the liquid flow through hole (A5) is arranged at the lower end of the anode plate, and the liquid flow through hole (B1) is arranged at the upper end of the cathode plate, so that the electrolyte can flow from one electrode chamber to the next electrode chamber.

[0004] However, when the electrolyte flows from one electrode chamber to the next in the existing electrolytic cell, due to the holes in the upper and lower plates, under the action of gravity, the flow rate distribution of the electrolyte in each electrode chamber will be uneven, resulting in differences in the electrolysis reaction, thereby affecting the electrolysis efficiency. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies, propose a positive and negative electrode plate hole structure, and solve the technical problem that the flow rate distribution of the electrolyte in each electrode chamber of the electrolytic cell in the prior art is uneven, which affects the electrolysis efficiency.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a hole position structure of anode and cathode plates, comprising: a plate structure and a sealing structure, wherein the plate structure comprises a plurality of cathode plates and a plurality of anode plates which are staggered and spaced apart in sequence, a first liquid through hole is arranged on a first side of the cathode plate, a second liquid through hole is arranged on a second side of the anode plate, and the first liquid through hole has the same height as the second liquid through hole; the sealing structure connects the plurality of cathode plates and the plurality of anode plates to form a seal between the edges of the cathode plates and the anode plates, so that a plurality of electrode chambers which are connected through the first liquid through hole and the second liquid through hole are formed between the plurality of cathode plates and the plurality of anode plates.

[0008] In some embodiments, the first side and the second side are located at opposite sides of the cathode plate. A plurality of the first liquid holes and the second liquid holes are provided, and the plurality of first liquid holes and the plurality of second liquid holes are arranged in sequence along the height direction of the cathode plate and the anode plate respectively; the cross-sectional areas of the first liquid holes and the second liquid holes are both circular and the apertures are equal.

[0009] In some embodiments, the inner walls of the first liquid through hole and the second liquid through hole are both provided with insulating conduits.

[0010] In some embodiments, the sealing structure includes a plurality of plate frames, which are respectively arranged between adjacent cathode plates and anode plates. An opening is arranged in the middle of the plate frame, and its two sides are respectively sealed and connected to the cathode plate and the anode plate.

[0011] In some embodiments, both sides of the inner wall of the plate frame extend inward to the side of the opening position of the cathode plate and the anode plate respectively; a first through groove is opened on the side of the plate frame corresponding to the first liquid hole, and a second through groove connected to the first through groove is opened on the inner side corresponding to the first through groove; a third through groove is opened on the side of the plate frame corresponding to the second liquid hole, and a fourth through groove connected to the third through groove is opened on the inner side corresponding to the third through groove.

[0012] In some embodiments, first positioning holes are provided on both sides of the cathode plate and the anode plate, and second positioning holes are provided on the plate frame at positions corresponding to the first positioning holes.

[0013] Compared with the prior art, the hole structure of the positive and negative plates provided by the utility model forms a pole chamber between the spaced cathode plates and anode plates through the pole plate structure and the sealing structure, and seals the edges of the cathode plate and the anode plate through the sealing structure, and each pole chamber can be connected in sequence through the first liquid hole 11 set on the first side of the cathode plate 1 and the second liquid hole 21 set on the second side of the anode plate 2. The first liquid hole 11 and the second liquid hole 21 have the same height, so that the electrolyte is guided through the left and right openings of the cathode plate and the anode plate in the electrolytic cell respectively, and the electrolyte can flow to the next pole chamber in the electrolytic cell through the first liquid hole or the second liquid hole in sequence, which can avoid the influence of gravity, so that the electrolyte flows evenly in the pole chamber, avoids the situation where the upper and lower openings of the pole plate cause uneven electrolyte flow rate, and can improve the electrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional top view structural diagram of the hole structure of the anode and cathode plates provided by the embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the cathode plate of the anode and cathode plate hole structure provided by the embodiment of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the anode plate of the cathode and anode plate hole structure provided by the embodiment of the utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the front side of the plate frame of the hole structure of the anode and cathode plates provided in the embodiment of the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the back side of the plate frame of the hole structure of the anode and cathode plates provided in the embodiment of the utility model;

[0019] Figure 6 It is a schematic diagram of a top view cross-sectional structure of the cathode plate, the anode plate and the plate frame connected to the hole structure of the anode and cathode plates provided by an embodiment of the utility model;

[0020] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0021] Figure 8 yes Figure 6 Enlarged view of point B in the middle.

[0022] Description of reference numerals:

[0023] 1. cathode plate; 11. first liquid passage hole;

[0024] 2. Anode plate; 21. Second liquid-passing hole; 22. First positioning hole; 23. Insulating conduit;

[0025] 3. Plate frame; 31. Opening; 32. First through slot; 33. Second through slot; 34. Third through slot; 35. Fourth through slot; 36. Second positioning hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In order to solve the technical problem that the flow rate distribution of the electrolyte in each electrode chamber of the electrolytic cell is uneven, which affects the electrolysis efficiency, the utility model provides a hole structure of the anode and cathode plates, which can avoid the influence of gravity, make the electrolyte flow evenly in the electrode chamber, and improve the electrolysis efficiency.

[0028] See also Figures 1 to 8 The hole structure of the positive and negative plates includes: a plate structure and a sealing structure, wherein the plate structure includes a plurality of cathode plates 1 and a plurality of anode plates 2 which are staggered and spaced apart in sequence, a first liquid hole 11 is provided on the first side of the cathode plate 1, and a second liquid hole 21 is provided on the second side of the anode plate 2, and the first liquid hole 11 and the second liquid hole 21 have the same height; the sealing structure connects the plurality of cathode plates 1 and the plurality of anode plates 2 to form a seal between the edges of the cathode plates 1 and the anode plates 2, so that a plurality of electrode chambers connected through the first liquid hole 11 and the second liquid hole 21 are formed between the plurality of cathode plates 1 and the plurality of anode plates 2.

[0029] In the present scheme, a plurality of cathode plates 1 and a plurality of anode plates 2 are staggered and spaced apart in sequence to form a plate structure. A sealing structure is provided to connect each cathode plate 1 and anode plate 2 to achieve sealing at the edges of the cathode plate 1 and the anode plate 2, so that an electrode chamber is formed between the spaced cathode plates 1 and the anode plates 2. Each electrode chamber can be connected in sequence through a first liquid hole 11 provided on the first side of the cathode plate 1 and a second liquid hole 21 provided on the second side of the anode plate 2. The first liquid hole 11 and the second liquid hole 21 have the same height, so that the electrolyte is guided through the left and right openings of the cathode plate and the anode plate in the electrolytic cell, respectively, to avoid the influence of gravity, so that the electrolyte flows evenly in the electrode chamber, and the electrolysis efficiency can be improved.

[0030] In this embodiment, the first side and the second side are located at opposite sides of the cathode plate 1. Preferably, the first liquid through hole 11 is provided on the left side of the cathode plate 1, and the second liquid through hole 21 is provided on the right side of the anode plate 2, so that the electrolyte can flow from left to right and from right to left between the anode plate and the cathode plate in sequence.

[0031] See also Figures 1 to 3 In order to realize the circulation of electrolyte between the anode plate and the cathode plate, in some embodiments, the first liquid hole 11 and the second liquid hole 21 are both provided with a plurality of them, and the plurality of first liquid holes 11 and the plurality of second liquid holes 21 are arranged in sequence along the height direction of the cathode plate 1 and the anode plate 2, respectively, with the lowest liquid hole being located at the bottom of the electrode chamber, and the highest liquid hole being located at the top of the electrode chamber. The first liquid hole 11 and the second liquid hole 21 can be other shapes such as round holes or square holes, and the first liquid hole 11 and the second liquid hole 21 are equal in size.

[0032] Of course, in other embodiments, there is no restriction on the number of the first liquid hole 11 and the second liquid hole 21, and the arrangement and shape of the first liquid hole 11 and the second liquid hole 21 are not limited thereto. For example, a plurality of the first liquid hole 11 and the second liquid hole 21 are provided, and the plurality of first liquid holes 11 and the plurality of second liquid holes 21 are arranged in an inclined manner from top to bottom; for another example, one first liquid hole 11 and one second liquid hole 21 are provided, and both are long holes extending along the height direction of the electrode plate.

[0033] See also Figure 1 , Figures 4 to 8 In this embodiment, the sealing structure includes a plurality of plate frames 3, and the plurality of plate frames 3 are respectively arranged between each adjacent cathode plate 1 and anode plate 2. An opening 31 is arranged in the middle of the plate frame 3, and its two sides are respectively sealed and connected with the cathode plate 1 and the anode plate 2.

[0034] In order to improve the strength of the opening positions of the cathode plate 1 and the anode plate 2, in this embodiment, the inner walls of the plate frame 3 extend inward to the side of the opening positions of the cathode plate 1 and the anode plate 2. The design of the plate frame 3 ensures the strength of the opening positions of the plates, and can improve the service life of the plates. At the same time, a through groove for electrolyte to flow to the liquid through hole is provided on the plate frame 3. Specifically, the side of the plate frame 3 is provided with a first through groove 32 at a position corresponding to the first liquid through hole 11, and a plurality of second through grooves 33 connected to the first through groove 32 are provided at a position corresponding to the first through groove 32 on its inner side; the side of the plate frame 3 is provided with a third through groove 34 at a position corresponding to the second liquid through hole 21, and a plurality of fourth through grooves 35 connected to the third through groove 34 are provided at a position corresponding to the third through groove 34 on its inner side. During operation, after the electrolyte enters the electrolytic cell, it can flow to the next pole chamber through the first groove 32 and the second groove 33 of one plate frame 3, the first liquid hole 11, and the first groove 32 and the second groove 33 of another plate frame 3, and then flow to the next pole chamber through the third groove 34 and the fourth groove 35 of one plate frame 3, the second liquid hole 21, and the third groove 34 and the fourth groove 35 of another plate frame 3, and so on, until it is discharged from the electrolytic cell.

[0035] Preferably, in this embodiment, first positioning holes 22 are provided on both sides of the cathode plate 1 and the anode plate 2, three first positioning holes 22 are provided on the right side of the cathode plate 1 and the anode plate 2, and four first positioning holes 22 are provided on the left side, and second positioning holes 36 are provided on the plate frame 3 at positions corresponding to the first positioning holes 22. During installation, the installation orientation of the plate and the plate frame 3 can be accurately located through the first positioning holes 22 and the second positioning holes 36, respectively, and the first positioning holes 22 and the second positioning holes 36 can be aligned for installation, so as to realize quick positioning and installation of the plate and the plate frame 3.

[0036] In other possible embodiments, the sealing structure is not limited thereto, and the manner in which the two sides of the plate frame 3 are sealed and connected to the cathode plate 1 and the anode plate 2 is not limited here, for example, the plate frame 3 and the electrode plate are fixed with screws, and a sealing ring is set between the plate frame 3 and the electrode plate for sealing.

[0037] In order to prevent the electrolyte from reacting in the first liquid hole 11 or the second liquid hole 21 to produce impurities and cause clogging of the liquid hole, in this embodiment, refer to Figure 8 The inner walls of the first liquid hole 11 and the second liquid hole 21 are both provided with an insulating tube 23, and the two ends of the insulating tube 23 protrude from the two sides of the electrode plate respectively. When the positive and negative electrodes and the plate frame 3 are installed, they can be positioned by the insulating tube 23. After installation, both ends of the insulating tube 23 extend to the through groove opened inside the plate frame 3 to prevent the electrolyte from reacting in the first liquid hole 11 or the second liquid hole 21 to produce impurities residue in the liquid hole.

[0038] Working principle: After the electrolyte enters the electrolytic cell through the liquid inlet, it enters the pole chamber formed between the cathode plate and the anode plate, and flows through the first through groove 32 and the second through groove 33 of one plate frame 3, the first liquid hole 11 and the first through groove 32 and the second through groove 33 of another plate frame 3 to the next pole chamber, and then flows through the third through groove 34 and the fourth through groove 35 of one plate frame 3, the second liquid hole 21 and the third through groove 34 and the fourth through groove 35 of another plate frame 3 to the next pole chamber, and so on, until it is discharged from the electrolytic cell.

[0039] The utility model forms an electrode chamber between the spaced cathode plate 1 and the anode plate 2 by setting an electrode plate structure and a sealing structure, and sealing the edges of the cathode plate 1 and the anode plate 2 by the sealing structure, and each electrode chamber can be connected in turn through a first liquid hole 1111 set on the first side of the cathode plate 11 and a second liquid hole 2121 set on the second side of the anode plate 22, and the first liquid hole 1111 and the second liquid hole 2121 are at the same height, so that the electrolyte is guided through the left and right openings of the cathode plate 1 and the anode plate 2 in the electrolytic cell respectively, and the electrolyte can flow to the next electrode chamber in the electrolytic cell through the first liquid hole 11 or the second liquid hole 21 in turn, which can avoid the influence of gravity, so that the electrolyte flows evenly in the electrode chamber, avoid the situation where the upper and lower openings of the electrode plate cause uneven electrolyte flow rate, and improve the electrolysis efficiency.

[0040] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A hole structure of anode and cathode plates, characterized in that: include: A plate structure, the plate structure comprising a plurality of cathode plates and a plurality of anode plates which are arranged alternately and spaced apart from each other, a first liquid through hole being arranged on a first side of the cathode plate, a second liquid through hole being arranged on a second side of the anode plate, and the first liquid through hole and the second liquid through hole being at the same height; and A sealing structure connects a plurality of cathode plates and a plurality of anode plates to form a seal between the edges of the cathode plates and the anode plates, so that a plurality of electrode chambers connected through the first liquid through hole and the second liquid through hole are formed between the plurality of cathode plates and the plurality of anode plates.

2. The hole structure of the cathode and anode plates according to claim 1, characterized in that: The first side and the second side are located at opposite sides of the cathode plate.

3. The hole structure of the cathode and anode plates according to claim 2, characterized in that: A plurality of the first liquid through holes and a plurality of the second liquid through holes are provided, and the plurality of first liquid through holes and the plurality of second liquid through holes are arranged in sequence along the height direction of the cathode plate and the anode plate, respectively.

4. The hole structure of the cathode and anode plates according to claim 3, characterized in that: The cross-sectional areas of the first liquid-passing hole and the second liquid-passing hole are both circular.

5. The hole structure of the cathode and anode plates according to claim 4, characterized in that: The aperture of the first liquid passage hole is equal to the aperture of the second liquid passage hole.

6. The hole structure of the cathode and anode plates according to claim 1, characterized in that: Insulating conduits are disposed on inner walls of the first liquid-passing hole and the second liquid-passing hole.

7. The hole structure of the cathode and anode plates according to claim 1, characterized in that: The sealing structure comprises a plurality of plate frames, which are respectively arranged between adjacent cathode plates and anode plates. An opening is arranged in the middle of the plate frame, and two sides thereof are respectively sealed and connected with the cathode plate and the anode plate.

8. The hole structure of the cathode and anode plates according to claim 7, characterized in that: Both sides of the inner wall of the plate frame extend inwards to the opening positions of the cathode plate and the anode plate respectively.

9. The hole structure of the cathode and anode plates according to claim 8, characterized in that: A first through groove is provided on the side surface of the plate frame at a position corresponding to the first liquid through hole, and a second through groove connected to the first through groove is provided on the inner side thereof at a position corresponding to the first through groove; a third through groove is provided on the side surface of the plate frame at a position corresponding to the second liquid through hole, and a fourth through groove connected to the third through groove is provided on the inner side thereof at a position corresponding to the third through groove.

10. The hole structure of the cathode and anode plates according to claim 7, characterized in that: First positioning holes are provided on both sides of the cathode plate and the anode plate, and second positioning holes are provided on the plate frame at positions corresponding to the first positioning holes.

Images