Electrolyte supply and distribution device for crude foil machine

Abstract

The utility model discloses a crude foil machine electrolyte supplying and distributing device which comprises a cavity, the whole cavity is in a cube shape, at least two ends of the outer side of the cavity are provided with liquid feeding openings, the upper end of the cavity is provided with a mounting plate, a plurality of small flow equalizing holes are evenly distributed in the mounting plate, and the liquid feeding openings are communicated with the cavity. Water can enter the cavity from the two ends of the cavity at the same time through the liquid feeding openings in the two ends, the cubic cavity can stabilize flow of electrolyte with the uneven flow speed in advance, most turbulent flow is digested in the cavity, and the uniformity of electrolyte supply is preliminarily guaranteed; and the balance of the overall electrolyte pressure and the stability of the liquid supply flow can be ensured through the dispersion holes formed in the mounting plate, the residual turbulent flow on the edge part basically disappears when the electrolyte passes through the small flow equalizing holes, and the flow velocity distribution of the liquid outlet is relatively uniform.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic copper foil production technology, specifically to an electrolyte supply and distribution device for a foil production machine. Background Technology

[0002] In the production process of electrolytic copper foil, the uniformity of the transverse (perpendicular to the direction of movement of the titanium roller) surface density of the copper foil is crucial. Uneven surface density can easily lead to problems such as copper foil edge collapse, tearing, and high warping, reducing the yield and pass rate of copper foil. With the rapid development of new energy, energy storage, 3C electronic products and other fields, the thickness of copper foil is becoming thinner and thinner, and the requirements for surface density uniformity are becoming higher and higher. In the production process of electrolytic copper foil, the transverse surface density uniformity is highly correlated with the uniform flowability of the solution.

[0003] While existing technologies also include liquid supply and distribution devices, such as the utility model patent CN220099230U which discloses a porous liquid supply and distribution device, liquid is symmetrically supplied from both ends to a porous liquid supply and distribution device. The distributor has multiple rows of symmetrically arranged holes and one asymmetrically arranged hole. After passing through the distributor, the liquid is uniformly supplied through multiple pipes. However, the circular cavity volume of this type of porous liquid supply and distribution device is insufficient, and turbulence will occur within the circular cavity when the liquid supply flow rate is sufficient. At the same time, because the holes on this circular cavity distributor are arranged on a circular surface, and the liquid supply pipes are vertically supplied, this will lead to uneven liquid flow across multiple liquid supply pipes, failing to fully meet the requirements for uniform surface density. Therefore, during the use of this liquid supply and distribution device, multiple methods are used to control the uniformity of the transverse density of the copper foil, such as attaching insulating shielding tape to the anode plate and shielding the anode plate with external devices. This is quite costly. As a result, the current liquid supply and distribution device has a complex structural design, high cost, and is difficult to control. The current challenge is to find a simple and economical way to obtain a stable electrolyte from the source and achieve a stable and uniform liquid supply flow. Utility Model Content

[0004] This invention provides an electrolyte supply and distribution device for a foil production machine, which can solve the problem that existing cylindrical liquid distributors generate turbulence when the liquid supply flow rate is sufficient, resulting in uneven liquid flow in multiple liquid supply pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electrolyte supply and distribution device for a foil production machine, comprising a cavity, the cavity being cubic in shape, with inlet ports at least at both ends on the outer side of the cavity, and an mounting plate at the upper end of the cavity, the mounting plate having a plurality of flow equalization holes evenly distributed thereon. Water can be simultaneously introduced from both ends of the cavity through the inlet ports at both ends. The cubic cavity pre-stabilizes the electrolyte with uneven flow velocity, with most of the turbulence being absorbed within the cavity, thus initially ensuring the uniformity of electrolyte supply. The dispersion holes on the mounting plate ensure the balance of the overall electrolyte pressure and the stability of the supply flow rate. When the electrolyte passes through the flow equalization holes, the remaining turbulence at the edges basically disappears, and the flow velocity distribution at the outlet is relatively uniform.

[0006] Preferably, the mounting plate has several mounting holes evenly distributed along its edge to facilitate the stable installation of the liquid supply and distribution device onto the electrolyzer.

[0007] Preferably, the bottom surface of the cavity is arc-shaped, and a liquid discharge port and / or a sewage discharge port are installed at the lowest point of the bottom surface of the cavity. The arc-shaped bottom surface can concentrate the electrolyte on the liquid discharge port and / or sewage discharge port, which facilitates the discharge of electrolyte and sewage.

[0008] Preferably, the front and rear sidewalls of the cavity are relatively inclined slopes, and the distance between the front and rear sidewalls gradually increases from top to bottom, which is beneficial for stabilizing the electrolyte flow and for the electrolyte to pass evenly through the flow equalization orifice.

[0009] Preferably, the upper liquid inlet is located at one-third of the distance from the bottom to the top of the cavity sidewall, which facilitates the rapid filling of the cavity by the electrolyte entering through the upper liquid inlet and reduces the need for constant flow.

[0010] Preferably, the outer sidewall of the cavity is provided with several reinforcing ribs arranged in a crisscross pattern to improve the overall strength of the cavity.

[0011] Preferably, the diameter of the flow equalization orifice is 8-12 mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] With a simple structure, water can be simultaneously introduced from both ends of the cavity through the liquid inlets at both ends. The cubic cavity pre-stabilizes the electrolyte flow even with uneven flow rates, and most of the turbulence is contained within the cavity, initially ensuring the uniformity of electrolyte supply. The existing multi-shunt pipe liquid supply method is eliminated. Dispersion holes are set above the flow stabilization cavity. These dispersion holes are uniformly distributed on the same horizontal plane. The electrolyte flows directly into the liquid inlet through the uniformly distributed dispersion holes, eliminating valve control, reducing management difficulty, and achieving better flow uniformity. The areal density uniformity of the copper foil is greatly improved, and the areal density difference is greatly reduced. This reduces the need for other adjustment operations such as applying insulating shielding tape to the anode plate and shielding the anode plate through external devices, thereby improving the production quality and efficiency of copper foil. Attached Figure Description

[0014] Figure 1 This is based on the main view structural diagram of this utility model;

[0015] Figure 2 This is a top view structural diagram based on the present invention;

[0016] Figure 3 This is a side view structural diagram based on the present invention.

[0017] Figure label:

[0018] 1. Cavity, 2. Liquid inlet, 3. Mounting plate, 4. Drain outlet, 5. Liquid discharge outlet, 6. Reinforcing rib, 7. Flow equalization hole, 8. Mounting hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This invention addresses the problem that existing cylindrical liquid distributors generate turbulence under sufficient liquid supply velocity, leading to uneven liquid flow across multiple liquid supply pipes. Figure 1-3 As shown, the following technical solution is provided: an electrolyte supply and distribution device for a foil production machine, including a cavity 1, the cavity 1 being cubic in shape, with inlet ports 2 at least at both ends of the outer side of the cavity 1, and an mounting plate 3 at the upper end of the cavity 1, with a plurality of flow equalization holes 7 evenly distributed on the mounting plate 3. Water can be simultaneously introduced from both ends of the cavity 1 through the inlet ports 2 at both ends. The cubic cavity 1 pre-stabilizes the electrolyte with uneven flow velocity, and most of the turbulence is absorbed within the cavity, initially ensuring the uniformity of electrolyte supply. The dispersion holes on the mounting plate 3 can ensure the balance of the overall electrolyte pressure and the stability of the supply flow rate. When the electrolyte passes through the flow equalization holes, the remaining turbulence at the edge basically disappears, and the flow velocity distribution at the outlet is relatively uniform.

[0021] Specifically, in some embodiments, the length of the cavity 1 is greater than its height, and the flow equalization holes 7 on the mounting plate 3 are arranged on the same horizontal plane. One liquid inlet 2 can be provided at each end of the cavity 1. Preferably, the liquid inlets 2 at both ends are located at one-third of the distance from the bottom to the top of the side wall of the cavity 1. This facilitates the rapid filling of the cavity 1 by the electrolyte entering through the liquid inlets 2, reducing the need for flow stabilization. The liquid inlets 2 can be installed as a separate component on the cavity 1, or they can be integrated into the cavity 1. The diameter of the flow equalization holes 7 is 8-12 mm, preferably 10 mm.

[0022] In some embodiments, such as Figure 2 As shown, the mounting plate 3 has several mounting holes 8 evenly distributed along its edge, which facilitates the stable installation of the liquid supply and distribution device onto the electrolyzer.

[0023] To facilitate the discharge of electrolyte and wastewater from the cavity 1, the bottom surface of the cavity 1 is generally arc-shaped. A discharge port 5 and / or a drain port 4 are installed at the lowest point of the bottom surface of the cavity 1. The arc-shaped bottom surface can concentrate the electrolyte on the discharge port 5 and / or the drain port 4, which facilitates the discharge of electrolyte and wastewater. The discharge port 5 and the drain port 4 can be installed side by side.

[0024] like Figure 3 As shown, in some embodiments, the front and rear sidewalls of the cavity 1 are relatively inclined slopes, and the distance between the front and rear sidewalls gradually increases from top to bottom, which is beneficial for stabilizing the electrolyte flow and for the electrolyte to pass through the flow equalization orifice 7 evenly.

[0025] In this embodiment, a number of reinforcing ribs 6 are arranged in a crisscross pattern on the outer sidewall of the cavity 1, which can improve the overall strength of the cavity 1.

[0026] In this embodiment, during electrolyte supply, the electrolyte enters the cavity 1 simultaneously from the upper liquid inlets 2 at both ends of the cavity 1. Since the liquid inlets are located at one-third of the distance from the bottom to the top of the cavity 1, when the liquid enters from both ends simultaneously, the cavity 1 will pre-stabilize the electrolyte with uneven flow rates. Most of the turbulence is absorbed within the cavity, initially ensuring the uniformity of electrolyte supply. Dispersion holes are provided above the stabilizing cavity. These dispersion holes are uniform and dispersed on the same horizontal plane, ensuring the balance of the overall electrolyte pressure and the stability of the supply flow rate. When the electrolyte passes through the equalization orifice 7, the remaining turbulence at the edge basically disappears, and the flow velocity distribution at the outlet is relatively uniform, with an overall difference within ±0.1m / s. After passing through the equalization plate in the anode tank for further stabilization, the electrolyte supply to the foil production equipment is finally stabilized and uniform after the second stabilization. When the electrolysis machine is stopped, the electrolyte is discharged to the waste liquid tank through the discharge port 5. When cleaning the electrolyte crystallization in the anode tank, the waste liquid is discharged from the drain port 4.

[0027] In some specific experimental embodiments:

[0028] Example 1: Replace the electrolyte supply distributor with the cavity-type porous supply distributor described above in this example, set the cathode roller speed, current and other foil production process parameters, without adding an anode plate shield, prepare 35μm electrolytic copper foil, and use an offline thickness gauge to measure the cross-sectional surface density difference of the copper foil at 13 points.

[0029] Example 2: The electrolyte supply distributor was replaced with the cavity-type porous supply distributor described in this example. Cathode roller speed, current, and other foil-making process parameters were set, and an anode plate shield was added to prepare a 35μm electrolytic copper foil. The transverse surface density difference of the copper foil at 13 points was measured using an offline thickness gauge.

[0030] In addition, Comparative Example 1 and Comparative Example 2 were set up. The only difference between Comparative Example 1 and Example 1 is that the original liquid supply distributor is still used. The only difference between Comparative Example 2 and Example 2 is that the original liquid supply distributor is still used.

[0031] The experimental results are shown in Table 1:

[0032] Table 1. Comparison of the transverse areal density of copper foil measured at 13 points between the experimental example and the comparative example.

[0033] serial number state Surface density range (g / m2) Example 1 No filtering 2.5 Example 2 Socket shielding 1.63 Comparative Example 1 No filtering 6.9 Comparative Example 2 Socket shielding 3.37

[0034] As shown in Table 1, after improving the liquid supply distributor, the areal density difference in Example 1 compared to Comparative Example 1 decreased from 6.9 g / m³. 2 Reduced to 2.5g / m 2 The overall uniformity was improved by 63.8%; when the same anode shielding plate was added, the areal density difference in Example 2 compared to Comparative Example 2 was reduced from 3.37 g / m³. 2 Reduced to 1.63 g / m 2 Overall uniformity improved by 51.6%.

[0035] As can be seen from the above embodiments, by adopting the liquid supply method of this embodiment, the uniformity of the surface density of the copper foil is greatly improved, the surface density difference is greatly reduced, and other adjustment operations such as applying insulating shielding tape to the anode plate and shielding the anode plate by adding external devices are reduced. Due to the uniform surface density, the production quality and efficiency of copper foil are improved.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] Furthermore, in this utility model, descriptions involving terms such as "primary," "secondary," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "primary" or "secondary" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A foil-making machine electrolyte supply and distribution device, characterized in that, include: The cavity (1) has liquid inlets (2) at least at both ends on the outside of the cavity (1). The cavity (1) is cubic in shape. The upper end of the cavity (1) is provided with a mounting plate (3). The mounting plate (3) is evenly distributed with several flow equalization holes (7).

2. The electrolyte supply and distribution device for the foil-making machine according to claim 1, characterized in that: The mounting plate (3) has several mounting holes (8) evenly distributed along its edge.

3. The electrolyte supply and distribution device for the foil-making machine according to claim 1, characterized in that: The bottom surface of the cavity (1) is generally arc-shaped, and a liquid discharge port (5) and / or a sewage discharge port (4) are installed at the lowest point of the bottom surface of the cavity (1).

4. The electrolyte supply and distribution device for the foil-making machine according to claim 3, characterized in that: The front and rear side walls of the cavity (1) are relatively inclined slopes, and the distance between the front and rear side walls gradually increases from top to bottom.

5. The electrolyte supply and distribution device for the foil-making machine according to claim 1, characterized in that: The liquid inlet (2) is located at one-third of the distance from the bottom to the top of the side wall of the cavity (1).

6. The electrolyte supply and distribution device for the foil-making machine according to claim 1, characterized in that: The outer sidewall of the cavity (1) is provided with several reinforcing ribs (6) arranged in a crisscross pattern.

7. The electrolyte supply and distribution device for the foil-making machine according to claim 1, characterized in that: The diameter of the flow equalization orifice (7) is 8-12 mm.

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