Electrolytic bath

Abstract

The utility model provides an electrolytic bath which comprises a bath body, a concave arc-shaped accommodating cavity is formed in the middle of the groove body; the liquid inlet hole penetrates through the tank body and is communicated with the accommodating cavity to form the liquid inlet hole; one part of the cathode roller is positioned in the accommodating cavity, and the other part of the cathode roller is positioned on the outer side of the tank body; an anode plate; when the electrolyte passes through the plurality of smaller second through holes, the sectional area of each second through hole is reduced, and the speed must be increased in order to keep the same flow according to a continuity equation'law of conservation of mass', so that the speed is increased under the condition that the total flow of the electrolyte is not changed. Due to the design of a plurality of small second through holes, the speed of each jet flow can be increased; furthermore, due to the design of the semicircular second splitter plate, more second through holes can be formed as much as possible, the plurality of second through holes can disperse the fluid or the gas into more fine jet flows to cover a larger area, and thus the electrolyte is distributed more uniformly.

Description

Technical Field

[0001] This utility model relates to the technical field of copper foil electrolysis, and in particular to an electrolytic cell. Background Technology

[0002] The preparation process of electrolytic copper foil involves rotating a conductive cathode roller at a certain speed in an electrolytic cell filled with copper sulfate solution. An anode plate is installed at the bottom of the electrolytic cell. Under the traction of the electric field, copper ions are deposited on the cathode roller. Then, the cathode roller rotates out of the electrolytic cell, and the copper foil is peeled off from the cathode roller and rolled up.

[0003] In existing technologies, such as Figure 1 and Figure 2 As shown, a square-shaped first diversion plate is provided at the electrolyte inlet of the tank, and a first through hole is provided on the first diversion plate. If the first through hole is too small, the electrolyte flow will not be able to keep up, and the electrolysis current will not be able to be increased, thus affecting the electrolysis efficiency. However, if the first through hole of the electrolyte is too large, it will cause the electrolyte to fluctuate, resulting in uneven electrolysis. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an electrolytic cell.

[0005] This utility model provides the following technical solution: an electrolytic cell, comprising:

[0006] The tank body; a concave arc-shaped receiving cavity is formed in the middle of the tank body;

[0007] A liquid inlet hole is formed, which penetrates the tank and communicates with the receiving cavity;

[0008] A cathode roller, a portion of which is located inside the receiving cavity and another portion of which is located outside the tank;

[0009] An anode plate is provided on the side wall of the receiving cavity, and there is a gap between the anode plate and the cathode roller, the gap being used to accommodate electrolyte;

[0010] The second flow divider is provided at the liquid inlet hole in an arc shape;

[0011] The second through hole is formed on the second flow divider plate.

[0012] Furthermore, the second diverter plate is convex on the side near the receiving cavity and concave on the side away from the receiving cavity.

[0013] Furthermore, the second flow divider is semi-circular; the sides of the semi-circular second flow divider are all fixedly connected to the sides of the liquid inlet.

[0014] Furthermore, the second through holes are evenly spaced and distributed on the second flow divider plate.

[0015] Furthermore, the second diverter plate is located above the liquid inlet.

[0016] Furthermore, the highest end of the second diverter plate and the lowest end of the gap are on the same plane.

[0017] Furthermore, the liquid inlet hole extends from the bottom of the tank to the receiving cavity, and the liquid inlet hole is aligned with the midpoint of the receiving cavity.

[0018] Furthermore, the front side of the liquid inlet is on the same plane as the front side of the receiving cavity, and the rear side of the liquid inlet is on the same plane as the rear side of the receiving cavity; the liquid inlet has a rectangular structure.

[0019] The beneficial effects of this invention are as follows: When the electrolyte passes through multiple smaller second through-holes, the cross-sectional area of ​​each second through-hole decreases. According to the continuity equation "law of conservation of mass," the velocity must increase to maintain the same flow rate. Therefore, with the total electrolyte flow rate remaining constant, the design of multiple smaller second through-holes can increase the velocity of each jet. Furthermore, the semi-circular second diverter design allows for the setting of as many second through-holes as possible. Multiple second through-holes can disperse the fluid or gas into more fine jets, covering a larger area, thereby providing a more uniform distribution of the electrolyte. As a result, during copper foil electrolysis, the electrolyte is distributed more evenly, ensuring consistent electrolyte concentration between the cathode roller and the anode plate, reducing concentration polarization, increasing the electrolyte renewal rate, that is, replacing the old electrolyte that has consumed the active ingredients more quickly, and maintaining high reactivity. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a conventional electrolyzer from a first-person perspective.

[0021] Figure 2 This is a schematic diagram of a conventional electrolytic cell from a second perspective.

[0022] Figure 3 This is a schematic diagram from a first-person perspective of the present invention.

[0023] Figure 4 This is an enlarged schematic diagram of the second diverter plate of this utility model.

[0024] Figure 5 This is a schematic diagram of the second perspective of this utility model.

[0025] The labels in the attached diagram are: 1-tank, 2-inlet hole, 3-cathode roller, 4-electrolyte, 5-anode plate, 6-copper foil, 7-transfer assembly, 8-first diverter plate, 81-first through hole, 9-second diverter plate, 91-second through hole. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] An electrolytic cell, such as Figure 3 As shown, it includes: tank body 1, liquid inlet hole 2, cathode roller 3, anode plate 5, second diversion plate 9, and second through hole 91;

[0030] Among them, the tank 1 has a concave arc-shaped receiving cavity formed in the middle of the tank 1;

[0031] Specifically, the tank 1 is square in shape, and the center of the receiving cavity is on the same straight line as the center of the tank 1;

[0032] Liquid inlet 2 is formed by penetrating the tank body 1 and communicating with the receiving cavity;

[0033] Specifically, the liquid inlet 2 extends from the bottom of the tank 1 to the receiving cavity, and the liquid inlet 2 is aligned with the midpoint of the receiving cavity; the front side of the liquid inlet 2 is on the same plane as the front side of the receiving cavity, and the rear side of the liquid inlet 2 is on the same plane as the rear side of the receiving cavity; the liquid inlet 2 has a rectangular structure; the liquid inlet 2 is used to allow external electrolyte 4 to flow into the receiving cavity.

[0034] Cathode roller 3, a portion of which is located inside the receiving cavity and another portion of which is located outside the tank 1;

[0035] Specifically, the axis of the cathode roller 3 is on the same axis as the receiving cavity. The cathode roller 3 can be driven to rotate by the drive assembly. The cathode roller 3 is existing technology, and the specific workings are not described in detail here.

[0036] Anode plate 5 is provided on the side wall of the receiving cavity, and there is a gap between the anode plate 5 and the cathode roller 3, the gap being used to accommodate electrolyte 4;

[0037] Specifically, the anode plate 5 is completely fitted to the side wall of the receiving cavity. The copper foil is electrolyzed through the cooperation of the anode plate 5 and the cathode roller 3. How the anode plate 5 and the cathode roller 3 cooperate to electrolyze the copper foil is existing technology and will not be described in detail here.

[0038] like Figure 4 and Figure 5 As shown, the second flow divider 9 is provided at the liquid inlet 2 in an arc shape;

[0039] Specifically, the second diverter plate 9 is convex on the side near the receiving cavity and concave on the side away from the receiving cavity; the second diverter plate 9 is semi-circular; the sides of the semi-circular second diverter plate 9 are fixedly connected to the sides of the liquid inlet hole 2; the second diverter plate 9 is located above the liquid inlet hole 2; the highest end of the second diverter plate 9 and the lowest end of the gap are on the same plane.

[0040] like Figure 5 As shown, a second through hole 91 is formed on the second flow divider plate 9;

[0041] Specifically, the second through holes 91 are evenly spaced on the second diverter plate 9, and the second through holes 91 are circular, elliptical, or a combination of circular and elliptical shapes.

[0042] In summary, by placing the semi-circular second flow divider 9 at the inlet hole 2, the semi-circular design of the second flow divider 9 can maximize the area, thereby increasing the number of second through holes 91. After the electrolyte 4 passes through the second flow divider 9, the jet becomes a multi-hole jet, which increases the flow rate of the electrolyte 4 and achieves a more uniform distribution. It can be understood that when the electrolyte 4 passes through multiple smaller second through holes 91, the cross-sectional area of ​​each second through hole 91 decreases. According to the continuity equation "law of conservation of mass", in order to maintain the same flow rate, the velocity must be increased. Therefore, with the total flow rate of the electrolyte 4 remaining unchanged, the design of multiple smaller second through holes 91 can increase the velocity of each jet. Furthermore, the semi-circular second diverter plate 9 design allows for the provision of as many second through holes 91 as possible. Multiple second through holes 91 can disperse the fluid or gas into more fine jets, covering a larger area, thereby providing a more uniform distribution of the electrolyte 4. As a result, during the copper foil electrolysis process, the electrolyte 4 is distributed more evenly, ensuring that the electrolyte concentration between the cathode roller 3 and the anode plate 5 is consistent, reducing concentration polarization, increasing the electrolyte 4 renewal rate, that is, replacing the old electrolyte 4 that has consumed the active ingredients more quickly, and maintaining high reactivity.

[0043] According to Faraday's law: m = KIt

[0044] m: Weight of copper electrolytically removed (in grams);

[0045] K: Faraday constant, the Faraday constant for copper is 1.185 g / (A·h);

[0046] I: Current flowing through the circuit, in A;

[0047] t: The time h during which current is applied.

[0048] Therefore, it can be seen that the higher the current, the higher the electrolysis efficiency per unit time. To improve production efficiency, the current must be increased. Through practical application, we found that when the original design current density reached 35,000A or more, it was impossible to produce qualified copper foil 6 due to insufficient flow rate and uneven distribution. However, with the design of the semi-circular second current shunt plate 9 in this patent, it is still possible to produce stable qualified copper foil 6 even when the current density reaches 50,000A. This improves production efficiency by more than 40%.

[0049] The working principle of this invention is as follows: When it is necessary to electrolyze copper foil 6, the operator can introduce electrolyte 4 into the receiving cavity through the liquid inlet 2. When introducing electrolyte 4, the semi-circular second diverter plate 9 can make the electrolyte 4 flow faster and be more evenly distributed into the receiving cavity. Then, through the cooperation of cathode roller 3 and anode plate 5, copper ions are deposited on cathode roller 3. After that, cathode roller 3 rotates out of the electrolytic cell, and copper foil 6 is peeled off from cathode roller 3. Then it can be transported out and wound up through the transmission component 7.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrolytic cell characterized in that, The utility model relates to a cathode electrolysis tank, including: Groove body, the middle part of groove body is formed with the accommodation cavity of recessed arc shape; Liquid inlet hole, the liquid inlet hole is formed in the groove body and communicates with the accommodation cavity; Cathode roller, one part of the cathode roller is located in the accommodation cavity, and the other part is located outside the groove body; Anode plate, the side wall of the accommodation cavity is provided with anode plate, and the gap exists between the anode plate and the cathode roller, and the gap is used for accommodating electrolyte; Second shunt plate, the second shunt plate of arc shape is arranged at the liquid inlet hole; Second through hole, a plurality of second through holes are formed on the second shunt plate.

2. The electrolytic cell of claim 1, wherein, The side of the second shunt plate close to the accommodation cavity is in the state of protruding, and the side away from the accommodation cavity is in the state of recessing.

3. The electrolytic cell of claim 2, wherein, The second shunt plate is semicircular, and the side of the semicircular second shunt plate is fixedly connected with the side of the liquid inlet hole.

4. The electrolytic cell of claim 1, wherein, The second through hole is uniformly spaced on the second shunt plate.

5. The electrolytic cell of claim 1, wherein, The second shunt plate is located in the upper part of the liquid inlet hole.

6. The electrolytic cell of claim 5, wherein, The highest end of the second shunt plate is in the same plane with the lowest end of the gap.

7. The electrolytic cell of claim 1, wherein, The liquid inlet hole is formed from the bottom of the groove body to the accommodation cavity, and the midpoint of the liquid inlet hole and the midpoint of the accommodation cavity are in the same straight line.

8. The electrolytic cell of claim 7, wherein, The front side of the liquid inlet hole and the front side of the accommodation cavity are in the same plane, and the rear side of the liquid inlet hole and the rear side of the accommodation cavity are in the same plane; the liquid inlet hole is in the rectangular structure.

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