Ferric iron dissolved copper circulating device

Abstract

The utility model relates to the technical field of electroplating, and discloses a ferric iron dissolved copper circulating device, comprising: a copper tank comprising a first tank body and a second tank body located below the first tank body, the first tank body is suitable for accommodating a liquid medicine, a reaction assembly and a spray pipe assembly are arranged in the first tank body, and the spray pipe assembly is suitable for spraying the liquid medicine to the reaction assembly; the copper dissolving tank body is arranged in the second tank body, a copper particle storage tank and a liquid medicine storage tank are formed in the copper dissolving tank body, an overflowing channel is communicated between the copper particle storage tank and the liquid medicine storage tank, and the overflowing channel is used for guiding regenerated liquid medicine flowing out of the copper particle storage tank into the liquid medicine storage tank; the first end of the return pipe is connected with the first tank body, and the opposite second end is connected with the bottom of the copper particle storage tank; the first end of the circulating pump is connected with the liquid medicine storage tank, and the opposite second end is connected with the spray pipe assembly. The ferric iron dissolved copper circulating device disclosed by the utility model can solve the problems of insufficient reaction of copper particles, low reaction efficiency and complex circulating structure in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, specifically to a copper dissolving and recycling device using trivalent iron. Background Technology

[0002] In the electroplating industry, traditional vertical continuous electroplating methods have some limitations, especially when dealing with trivalent iron (Fe3+). 3+ ) and copper ions (Cu 2+ In electroplating processes, traditional methods typically employ an in-tank ferric iron (Fe3+) copper dissolution circulation system. This method generally suffers from the following drawbacks: First, insufficient copper particle reaction: due to the fixed flow direction of the plating solution, the copper particles at the bottom are not fully utilized, affecting reaction efficiency and solution regeneration. Second, insufficient supply of ferrous iron (Fe2+) and copper ions: due to unstable reaction conditions, it is difficult to guarantee a continuous supply of sufficient Fe3+ ions. 2+ and Cu 2+ This can affect the stability of the electroplating process and product quality; third, the structure is complex and occupies a lot of space: the traditional system design is not optimized enough, which not only occupies a lot of space resources, but also increases the difficulty of installation and maintenance. Utility Model Content

[0003] In view of this, the present invention provides a copper molten iron circulation device to solve the problems of insufficient copper particle reaction, low reaction efficiency and complex circulation structure in the prior art.

[0004] This utility model provides a trivalent iron copper dissolution circulation device, comprising:

[0005] A copper tank includes a first tank body and a second tank body located below the first tank body. The first tank body is adapted to contain a liquid medicine. A reaction component and a spray nozzle assembly are disposed in the first tank body. The spray nozzle assembly is adapted to spray the liquid medicine onto the reaction component.

[0006] A copper melting tank is disposed in the second tank. A copper particle storage tank and a medicine storage tank are formed in the copper melting tank. An overflow channel is connected between the copper particle storage tank and the medicine storage tank. The overflow channel is used to guide the regenerated medicine flowing out of the copper particle storage tank to the medicine storage tank.

[0007] The return pipe has its first end connected to the first tank and its opposite second end connected to the bottom of the copper particle storage tank.

[0008] A circulating pump, the first end of which is connected to the medicine storage tank, and the opposite second end of which is connected to the nozzle assembly.

[0009] Beneficial effects: (1) Improved reaction efficiency: The reflux pipe design allows the reagent to flow from the bottom of the first tank into the bottom of the copper particle storage tank of the copper melting tank, realizing a bottom-up flow path, thereby increasing the chance of contact between the reagent and the copper particles, and promoting the Fe reaction. 3+ The full reaction between the copper particles and the reaction solution improves the utilization rate of the copper particles and the reaction efficiency, and reduces the loss of unreacted solution.

[0010] (2) Stable supply of ferrous and copper ions: through continuous recycling of Fe-containing... 2+ and Cu 2+ The specialized chemical solution, combined with an efficient reaction environment, ensures a continuous and stable supply of ferrous and copper ions during the electroplating process. This improves the consistency and stability of electroplating quality, solves problems such as uneven coating thickness and color differences, and ultimately enhances the quality of the final product.

[0011] (3) Compact and reasonable structure: The space inside the copper melting tank is divided into a copper particle storage tank and a chemical solution storage tank, and the copper particle storage tank and the chemical solution storage tank are connected by a flow channel. In this way, the internal space layout is optimized, the overall footprint of the equipment is reduced, and the regenerated chemical solution can be transferred smoothly and orderly into the chemical solution storage tank, which is conducive to maintaining the stability of the system.

[0012] In one optional embodiment, a partition is provided inside the copper melting tank, which divides the copper melting tank into a copper particle storage tank and a medicine storage tank arranged side by side in the horizontal direction.

[0013] Beneficial effects: On the one hand, functional zoning allows for more orderly separation and recirculation of the drug solution at different stages, helping to maintain stable system operation and reducing unnecessary fluctuations. On the other hand, the separate copper particle storage tank and drug solution storage tank make it easier for operators to perform daily inspections and maintenance, such as adding copper particles or cleaning sediment.

[0014] In one optional embodiment, the top of the partition is spaced apart from the top of the copper melting tank to form the flow channel, the top of the copper particle storage tank is open to form an overflow port, the top of the medicine storage tank is open to form an inlet port, and the overflow port, the flow channel and the inlet port are connected in sequence.

[0015] Beneficial effects: The overflow port ensures that the reagent does not overflow due to excessive height, while promoting uniform distribution of the reagent within the copper particle storage tank, thus improving reaction efficiency. The flow channel design allows the reagent to flow smoothly between the two tanks, preventing unreacted reagent from flowing out directly and ensuring full contact between the reagent and the copper particles. The open design of the inlet not only receives the regenerated reagent but also helps maintain the system's pressure balance, ensuring the stable operation of the entire circulation system.

[0016] In one alternative embodiment, the circulation pump inlet formed at the first end of the circulation pump is connected to the bottom of the drug storage tank.

[0017] Beneficial effects: Because the circulating pump is connected to the bottom of the chemical storage tank, it can directly draw up the chemical solution at the very bottom, ensuring that all regenerated chemical solutions are fully utilized and avoiding chemical residue or waste. At the same time, the relatively high pressure at the bottom of the chemical storage tank helps the circulating pump provide a stable flow rate, ensuring that the chemical solution is evenly delivered to the nozzle assembly, maintaining the consistency and stability of the electroplating process.

[0018] In one optional embodiment, the copper particle storage tank is provided with a first filter element for filtering copper particles, the first filter element and the bottom of the copper particle storage tank defining a reflux cavity, and the second end of the reflux pipe is connected to the reflux cavity.

[0019] Beneficial effects: The reflux chamber design allows the reagent to be evenly distributed within a smaller space before entering the copper particle layer, then slowly flows upward through the copper particle layer, ensuring sufficient contact between the reagent and the copper particles and improving reaction efficiency. Furthermore, the first filter effectively prevents copper particles from flowing out with the reagent, protecting the subsequent circulation system from blockage or contamination, and enhancing the system's stability and reliability.

[0020] In one alternative embodiment, at least one of the return pipes has a drain pipe connected to its second end, the drain pipe being located within the return cavity and extending in a direction away from the partition.

[0021] Beneficial effects: The drain pipe can prevent short-circuit flow, ensuring that the liquid medicine can be evenly distributed and fully contact the copper particles when it flows in, thereby avoiding the possibility that the liquid medicine will flow out through the flow channel before it has fully reacted, and ensuring that all the liquid medicine can fully contact and react with the copper particles.

[0022] In one optional embodiment, the trivalent iron copper dissolving circulation device further includes:

[0023] An overflow pipe has its first end connected to the interior of the copper melting tank and communicating with the flow channel, and its opposite second end connected to the exterior of the copper melting tank. In the height direction of the copper melting tank, the first end of the overflow pipe is located between the top of the partition and the top of the copper melting tank.

[0024] Beneficial effects: The overflow pipe helps maintain the liquid level in the copper melting tank within a stable range, preventing turbulence or uneven flow caused by excessive liquid level. Simultaneously, as a safety mechanism, the overflow pipe provides an additional drainage path in case of accidental liquid level increase, preventing spillage that could cause environmental pollution or other safety hazards.

[0025] In one alternative embodiment, the return pipe is provided with an electrically operated valve with an adjustable opening.

[0026] Beneficial effects: On the one hand, the flow rate of the liquid can be adjusted in real time according to different production loads or process requirements, ensuring the flexibility and adaptability of the system; on the other hand, by precisely controlling the flow rate of the liquid, the liquid can be ensured to have full contact with the copper particles, thereby improving reaction efficiency and copper particle utilization.

[0027] In one alternative embodiment, a second filter element is provided in the first tank, the second filter element and the bottom of the first tank defining a drain cavity, and the first end of the return pipe is connected to the drain cavity.

[0028] Beneficial effects: The second filter effectively blocks large particles and undissolved substances, ensuring that only purified medicine can enter the subsequent circulation system through the return pipe, protecting the pump and other equipment from clogging or contamination. Simultaneously, the presence of the drain chamber allows the medicine to be evenly distributed before entering the return pipe, reducing turbulence and ensuring smooth flow, further improving the overall performance of the system.

[0029] In one alternative embodiment, the reaction assembly includes an anode and a cathode, and the nozzle assembly includes an anode nozzle and a cathode nozzle, the anode and the cathode being disposed opposite to each other, the anode nozzle being adapted to spray a drug solution onto the anode, and the cathode nozzle being adapted to spray a drug solution onto the cathode.

[0030] Beneficial effects: It enables the rational installation of the reaction components and nozzle components in the first tank, simplifies the structure and ensures stability. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a front view of a trivalent iron copper dissolving circulation device according to an embodiment of the present invention;

[0033] Figure 2 This is a top view of a trivalent iron copper dissolving circulation device according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Copper tank; 11. First tank body; 111. Drainage chamber; 12. Second tank body; 13. Copper melting tank body; 131. Copper particle storage tank; 1311. Return chamber; 132. Chemical solution storage tank; 133. Flow channel; 2. Return pipe; 21. Drain pipe; 3. Circulation pump suction inlet; 4. Baffle; 5. First filter element; 6. Overflow pipe; 7. Electric valve; 8. Second filter element; 91. Anode element; 92. Cathode element; 93. Anode nozzle; 94. Level gauge. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] The following description, with reference to the accompanying drawings, describes a copper-dissolving ferric iron recycling device according to this invention.

[0040] The working principle of the trivalent iron copper dissolving and circulation device according to an embodiment of this utility model is described below:

[0041] like Figure 1 and Figure 2 As shown, the ferric iron copper dissolving circulation device according to an embodiment of the present invention includes a copper tank 1, a reaction assembly, a nozzle assembly, a copper dissolving tank 13, a return pipe 2, and a circulation pump.

[0042] The copper tank 1 includes a first tank body 11 and a second tank body 12. The second tank body 12 is located below the first tank body 11. The first tank body 11 is adapted to contain the liquid medicine. A reaction component and a spray nozzle assembly are provided inside the first tank body 11. The spray nozzle assembly is adapted to spray the liquid medicine onto the reaction component.

[0043] The copper melting tank 13 is disposed in the second tank 12. The copper melting tank 13 forms a copper particle storage tank 131 and a medicine storage tank 132. The copper particle storage tank 131 and the medicine storage tank 132 are connected by a flow channel 133. The flow channel 133 is used to guide the regenerated medicine flowing out of the copper particle storage tank 131 to the medicine storage tank 132.

[0044] The first end of the return pipe 2 is connected to the first tank 11, and its opposite second end is connected to the bottom of the copper particle storage tank 131. The first end of the circulation pump is connected to the medicine storage tank 132, and its opposite second end is connected to the nozzle assembly.

[0045] The copper tank 1 comprises two parts: a first tank body 11 and a second tank body 12. The first tank body 11 is located above the second tank body 12. The first tank body 11 is used to contain the chemical solution and is equipped with reaction components (such as an anode component 91 and a cathode component 92) and nozzle components (such as an anode nozzle 93 and a cathode nozzle). The nozzle components are responsible for spraying the chemical solution to the corresponding reaction area for electroplating reaction.

[0046] The copper dissolving tank 13 is located within the second tank 12 of the copper tank 1, and is internally divided into two main areas: a copper particle storage tank 131 and a chemical solution storage tank 132. The copper particle storage tank 131 and the chemical solution storage tank 132 are connected by a flow channel 133, which allows the regeneration chemical solution to flow naturally from the copper particle storage tank 131 to the chemical solution storage tank 132. Specifically, the regenerated chemical solution (containing newly generated Fe) 2+ and Cu 2+ The solution flows into the chemical storage tank 132 through the flow channel 133. In this way, due to the design of the flow channel 133, it is ensured that the regenerated chemical solution can be transferred smoothly and orderly into the chemical storage tank 132, ready to participate in the next round of electroplating reaction.

[0047] It should be explained that the regeneration mechanism of the medicine solution in the copper particle storage tank 131 is as follows: A certain amount of pure copper particles are placed in the copper particle storage tank 131. When Fe is present... 3+ When the medicinal solution enters the copper particle storage tank 131, Fe 3+ It will undergo a redox reaction with pure copper particles to generate new Fe.2+ and Cu 2+ During this process, Fe 3+ Reduced to Fe 2+ Cu is oxidized to Cu 2+ This allows for the regeneration of the medicinal components.

[0048] One end of the reflux pipe 2 is connected to the first tank 11, and the other end is directly connected to the bottom of the copper particle storage tank 131 of the copper melting tank 13. This design allows the Fe-containing material flowing out from the first tank 11 to... 3+ The medicinal liquid can flow to the bottom of the copper particle storage tank 131, and as the medicinal liquid continuously flows into the copper particle storage tank 131, the Fe-containing liquid... 3+ The medicinal liquid gradually overflows from bottom to top over the copper particles stored in the copper particle storage tank 131, increasing the chance of contact between the medicinal liquid and the copper particles and promoting a full reaction between the two.

[0049] It is understandable that, through the design of the aforementioned reflux pipe 2, the Fe-containing... 3+ The drug solution can flow upward at a slower speed under lower pressure conditions, which helps to prolong the residence time of the drug solution in the copper particle layer, increase the contact area between the two, and thus improve the reaction efficiency.

[0050] In addition, reflux pipe 2 will contain Fe 3+ The liquid medicine is introduced into the bottom of the copper particle storage tank 131, which avoids the possibility of the liquid medicine directly flushing the flow channel 133 or flowing out of the copper particle storage tank 131 quickly, and ensures that the liquid medicine reacts with the copper particles as much as possible, rather than leaving the copper particle storage tank 131 without fully reacting.

[0051] One end of the circulating pump is connected to the chemical solution storage tank 132, and the other end is connected to the nozzle assembly. The main function of the circulating pump is to draw the chemical solution from the copper dissolving tank 13 and transport it to the nozzle assembly in the first tank 11 so that it can participate in the electroplating reaction again.

[0052] Furthermore, based on the above working principle, the general working process of the trivalent iron copper dissolving circulation device of this utility model is described as follows: Containing Fe 3+ The chemical solution flows from the bottom of the first tank 11 into the bottom of the copper particle storage tank 131 of the copper melting tank 13 through the return pipe 2. At this time, the chemical solution flows upward at a relatively slow speed to ensure that it can fully contact the copper particles.

[0053] In the copper granule storage tank 131, the Fe in the liquid medicine 3+ It undergoes a redox reaction with pure copper particles to generate new Fe. 2+ and Cu 2+ During this process, the medicinal solution gradually transforms into a regenerated medicinal solution, in which Fe... 3+ Effectively reduced to Fe 2+At the same time, more Cu was produced. 2+ The regenerated drug solution flows naturally into the drug solution storage tank 132 through the flow channel 133. The design of the flow channel 133 ensures that the regenerated drug solution can flow smoothly and orderly into the drug solution storage tank 132 without affecting the reaction environment in the copper particle storage tank 131.

[0054] The circulating pump draws the regenerated chemical solution from the chemical solution storage tank 132 and transports it back to the nozzle assembly in the first tank 11, where it participates in the electroplating reaction again. This process repeats continuously, forming a stable and efficient circulation system.

[0055] In summary, during the above process, this invention guides the liquid medicine from the bottom into the copper particle storage tank 131 through the reflux pipe 2, which not only increases the contact opportunity between the liquid medicine and the copper particles, but also reduces the loss of unreacted liquid medicine, thereby improving the reaction efficiency and stability of the entire system.

[0056] In the electroplating industry, traditional vertical continuous electroplating methods have some limitations, especially when dealing with trivalent iron (Fe3+). 3+ ) and copper ions (Cu 2+ In electroplating processes, traditional methods typically employ an in-tank ferric iron (Fe3+) copper dissolution circulation system. This method generally suffers from the following drawbacks: First, insufficient copper particle reaction: due to the fixed flow direction of the plating solution, the copper particles at the bottom are not fully utilized, affecting reaction efficiency and solution regeneration. Second, insufficient supply of ferrous iron (Fe2+) and copper ions: due to unstable reaction conditions, it is difficult to guarantee a continuous supply of sufficient Fe3+ ions. 2+ and Cu 2+ This can affect the stability of the electroplating process and product quality; third, the structure is complex and occupies a lot of space: the traditional system design is not optimized enough, which not only occupies a lot of space resources, but also increases the difficulty of installation and maintenance.

[0057] Therefore, in order to solve the technical defects existing in the above-mentioned related technologies, this utility model provides a copper dissolving and circulation device with trivalent iron. Through the close cooperation of the copper dissolving tank 13 and the return pipe 2 in the design, the solution is fully reacted with the copper particles during the circulation process, and the solution components are effectively regenerated, thereby maintaining the high efficiency of the electroplating process and the stability of product quality.

[0058] Furthermore, compared with related technologies, this utility model has the following advantages:

[0059] (1) Improved reaction efficiency: The design of the reflux pipe 2 allows the reagent to flow from the bottom of the first tank 11 into the bottom of the copper particle storage tank 131 of the copper melting tank 13, realizing a bottom-up flow path, thereby increasing the opportunity for the reagent to contact the copper particles and promoting Fe reaction. 3+The full reaction between the copper particles and the reaction solution improves the utilization rate of the copper particles and the reaction efficiency, and reduces the loss of unreacted solution.

[0060] (2) Stable supply of ferrous and copper ions: through continuous recycling of Fe-containing... 2+ and Cu 2+ The specialized chemical solution, combined with an efficient reaction environment, ensures a continuous and stable supply of ferrous and copper ions during the electroplating process. This improves the consistency and stability of electroplating quality, solves problems such as uneven coating thickness and color differences, and ultimately enhances the quality of the final product.

[0061] (3) Compact and reasonable structure: The space inside the copper melting tank 13 is divided into a copper particle storage tank 131 and a drug solution storage tank 132, and the copper particle storage tank 131 and the drug solution storage tank 132 are connected by a flow channel 133. In this way, the internal space layout is optimized, the overall footprint of the equipment is reduced, and the regenerated drug solution can be transferred smoothly and orderly into the drug solution storage tank 132, which is conducive to maintaining the stability of the system.

[0062] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, a partition 4 is provided inside the copper melting tank 13, which divides the copper melting tank 13 into a copper particle storage tank 131 and a medicine storage tank 132 arranged side by side in the horizontal direction.

[0063] In this embodiment, the copper dissolving tank 13 is a closed space, internally divided into two main parts by a partition 4: a copper particle storage tank 131 and a reagent storage tank 132. The partition 4 extends vertically, dividing the copper dissolving tank 13 into left and right parts (side by side in the horizontal direction). The copper particle storage tank 131 is located on one side of the partition 4 (e.g., the left side) and is mainly used to store pure copper particles. The reagent storage tank 132 is located on the other side of the partition 4 (e.g., the right side) and is used to store the reagent regenerated after the reaction. The copper dissolving tank 13 and the partition 4 are typically made of corrosion-resistant materials, such as stainless steel or PVC, to ensure long-term stable operation.

[0064] The partition 4 can be parallel to the vertical direction or it can be inclined relative to the vertical direction. This utility model does not impose any special restrictions on this, as long as the partition 4 can divide the interior of the copper melting tank 13 into two tanks arranged side by side along the horizontal direction.

[0065] In this way, on the one hand, the functional zoning makes the effective separation and recirculation of the medicine solution at different stages more orderly, which helps to maintain the stable operation of the system and reduces unnecessary fluctuations. On the other hand, the separate copper particle storage tank 131 and medicine solution storage tank 132 make it easier for operators to perform daily inspections and maintenance, such as adding copper particles or cleaning sediment.

[0066] In addition, the vertical baffle 4 design avoids the possibility of the liquid directly flushing the flow channel 133 or flowing out of the copper particle storage tank 131, ensuring that the liquid reacts with the copper particles as much as possible, rather than leaving the copper particle storage tank 131 without sufficient reaction.

[0067] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the top of the partition 4 is spaced apart from the top of the copper melting tank 13 to form a flow channel 133, the top of the copper particle storage tank 131 is open to form an overflow port, the top of the liquid medicine storage tank 132 is open to form an inlet port, and the overflow port, the flow channel 133 and the inlet port are connected in sequence.

[0068] In this embodiment, the overflow port is located at the top of the copper particle storage tank 131 and opens upwards. When the liquid in the copper particle storage tank 131 reaches a certain height, the excess liquid will flow out through the overflow port, preventing the liquid from overflowing or affecting the reaction efficiency due to excessive liquid level. In this way, the overflow port ensures that the regenerated liquid can flow smoothly into the flow channel 133, avoiding violent water flow impact and ensuring a smooth transition of the liquid between different areas.

[0069] The flow channel 133 is located between the top of the partition 4 and the top of the copper melting tank 13, forming a horizontal gap. Serving as a bridge between the copper particle storage tank 131 and the medicine storage tank 132, the flow channel 133 allows the regenerated medicine to flow naturally from the copper particle storage tank 131 to the medicine storage tank 132 through the overflow port. Thus, the design of the flow channel 133 ensures the stability of the medicine flow, avoids short-circuit flow or turbulence, and allows the medicine to be transferred orderly from one tank to another.

[0070] It should also be noted that, in actual production, the height and width of the flow channel 133 can be adjusted according to actual needs to optimize the flow rate and volume of the liquid medicine and ensure the optimal operation of the system.

[0071] The inlet is located at the top of the liquid storage tank 132 and opens upwards. It can be understood that the regenerated liquid flowing in through the flow channel 133 ultimately enters the liquid storage tank 132 through the inlet, ready to participate in the next cycle. In actual production, the open design of the inlet helps maintain the pressure balance within the liquid storage tank 132, preventing pressure changes caused by a closed environment from affecting the normal flow of the liquid. Simultaneously, operators can directly observe the flow of the liquid through the inlet and perform necessary inspections and maintenance, such as cleaning sediment.

[0072] Specifically, based on the above structure, the flow path of the liquid solution within the copper dissolving tank 13 is as follows: when Fe is present... 3+After the liquid medicine enters the bottom of the copper particle storage tank 131 through the reflux pipe 2, it flows upward and reacts fully with the copper particles to generate new Fe. 2+ and Cu 2+ As the reaction proceeds, the amount of liquid medicine in the copper particle storage tank 131 gradually increases. When the liquid medicine reaches the height of the overflow port, the excess portion flows out through the overflow port and into the flow channel 133. The regenerated liquid medicine flows smoothly into the inlet of the liquid medicine storage tank 132 through the flow channel 133, completing a complete liquid medicine transfer process.

[0073] In summary, the overflow port ensures that the reagent will not overflow due to excessive pressure, while also promoting uniform distribution of the reagent within the copper particle storage tank 131, thus improving reaction efficiency. The design of the flow channel 133 allows the reagent to flow smoothly between the two tanks, preventing the possibility of unreacted reagent flowing out directly and ensuring sufficient contact between the reagent and the copper particles. The open design of the inlet not only receives the regenerated reagent but also helps maintain the system's pressure balance, ensuring the stable operation of the entire circulation system.

[0074] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the circulation pump inlet 3 formed at the first end of the circulation pump is connected to the bottom of the medicine storage tank 132.

[0075] Understandably, since the circulation pump inlet 3 is connected to the bottom of the chemical storage tank 132, it can directly draw up the chemical solution at the very bottom, ensuring that all regenerated chemical solutions are fully utilized and avoiding chemical residue or waste. At the same time, the relatively high pressure at the bottom of the chemical storage tank 132 helps the circulation pump provide a stable flow rate, ensuring that the chemical solution can be evenly delivered to the nozzle assembly, maintaining the consistency and stability of the electroplating process.

[0076] In addition, sediment or incompletely dissolved chemicals tend to accumulate at the bottom of the drug storage tank 132. By connecting the circulation pump inlet 3 to the bottom, these sediments can be effectively agitated and resuspended in the drug solution, thus participating in subsequent reactions and improving the utilization rate of the drug solution.

[0077] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, a first filter element 5 for filtering copper particles is provided in the copper particle storage tank 131. The first filter element 5 and the bottom of the copper particle storage tank 131 define a reflux cavity 1311, and the second end of the reflux pipe 2 is connected to the reflux cavity 1311.

[0078] In this embodiment, the first filter element 5 is installed inside the copper particle storage tank 131 and is located near the bottom. On the one hand, the first filter element 5 serves to filter the copper particles, that is, to prevent the copper particles from flowing into the return pipe 2 and the subsequent circulation system with the medicine, ensuring that only the medicine can pass through; on the other hand, the first filter element 5 can also support the copper particles, so that the copper particles are evenly distributed, increasing the contact area between the medicine and the copper particles, and improving the reaction efficiency.

[0079] The reflux chamber 1311 is formed by the space between the first filter element 5 and the bottom of the copper particle storage tank 131. The reflux chamber 1311 serves as a temporary storage area for the medicine, allowing it to collect before entering the copper particle layer. Specifically, after the medicine enters the reflux chamber 1311 from the reflux pipe 2, it can be evenly distributed within a relatively small space, and then slowly flows upward through the copper particle layer, ensuring sufficient contact between the medicine and the copper particles.

[0080] In this way, through the design of the reflux chamber 1311, the liquid medicine can be evenly distributed in a small space before entering the copper particle layer, and then slowly flow upward through the copper particle layer, ensuring sufficient contact between the liquid medicine and the copper particles and improving the reaction efficiency. Furthermore, the first filter element 5 effectively prevents copper particles from flowing out with the liquid medicine, protecting the subsequent circulation system from blockage or contamination, and enhancing the stability and reliability of the system.

[0081] In addition, the presence of the reflux cavity 1311 makes the flow path of the liquid medicine more reasonable, avoids the liquid medicine directly impacting the copper particle layer, reduces turbulence, and ensures the smooth flow of the liquid medicine.

[0082] like Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, at least one return pipe 2 has a drain pipe 21 connected to its second end. The drain pipe 21 is located in the return cavity 1311 and extends in a direction away from the partition plate 4.

[0083] In this embodiment, the drain pipe 21 is located inside the return cavity 1311 and connected to the second end of the return pipe 2. The drain pipe 21 extends in a direction away from the partition plate 4, which can prevent short circuits and ensure that the liquid medicine can be evenly distributed and fully contact the copper particles when it flows in. This avoids the possibility that the liquid medicine will flow out through the flow channel 133 without fully reacting, and ensures that all liquid medicine can fully contact and react with the copper particles.

[0084] For example, there are four return pipes 2. The second end of one return pipe 2 is connected to the end of the return cavity 1311 away from the partition 4. The second ends of two return pipes 2 are connected to the middle of the return cavity 1311. The second end of the last return pipe 2 is connected to the end of the return cavity 1311 near the partition 4. A drain pipe 21 is connected to the second end of the last return pipe 2. The drain pipe 21 is located in the return cavity 1311 and extends in the direction away from the partition 4.

[0085] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the trivalent iron copper dissolving circulation device further includes an overflow pipe 6. The first end of the overflow pipe 6 is connected to the interior of the copper dissolving tank 13 and to the flow channel 133, while its opposite second end is connected to the exterior of the copper dissolving tank 13. In the height direction of the copper dissolving tank 13, the first end of the overflow pipe 6 is located between the top of the partition plate 4 and the top of the copper dissolving tank 13.

[0086] Based on the overflow pipe 6 structure set in this embodiment, when the liquid level in the copper melting tank 13 exceeds the set value, the excess liquid will flow in through the first end of the overflow pipe 6 and eventually be discharged out of the copper melting tank 13 from the second end, preventing the liquid from overflowing or affecting the normal operation of the system.

[0087] It is understandable that the presence of the overflow pipe 6 helps maintain the liquid level in the copper melting tank 13 within a stable range, avoiding turbulence or uneven flow caused by excessive liquid level. At the same time, as a safety mechanism, the overflow pipe 6 provides an additional drainage path in case of accidental increase in liquid level, preventing liquid overflow from causing environmental pollution or other safety hazards.

[0088] Specifically, during the production process, the installation height of the overflow pipe 6 can be set and adjusted according to actual production. For example, technicians can set the height of the first end of the overflow pipe 6 according to the standard parameters of the production line to ensure that it is located between the top of the partition 4 and the top of the copper melting tank 13, slightly lower than the highest point of the flow channel 133, so as to provide sufficient safety margin.

[0089] It should be noted that the height of the overflow pipe 6 should ensure that the liquid in the copper particle storage tank 131 can fully contact and react with the copper particles, while avoiding excessive liquid level that could cause overflow or affect reaction efficiency. Furthermore, to prevent a sudden increase in liquid level due to unforeseen circumstances (such as equipment failure or operational errors), the overflow pipe 6 should have a certain safety margin to ensure that even if the liquid level slightly exceeds the normal range, it can be discharged in a timely manner.

[0090] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the return pipe 2 is provided with an electric valve 7 with adjustable opening.

[0091] Specifically, an electric valve 7 (e.g., an electric ball valve) is installed on the return pipe 2, typically located at the first end of the return pipe 2 (i.e., the side closest to the first tank 11), and is fixed to the return pipe 2 by a standard flange or other reliable connector to ensure sealing and durability.

[0092] In practical applications, the electric valve 7 can be adjusted to any position between fully closed and fully open via a control system (such as a PLC or manual controller). This allows for precise control of the flow rate of the chemical solution entering the copper granule storage tank 131, ensuring the solution flows in at an appropriate rate to fully contact and react with the copper granules. Furthermore, the electric valve 7 can be integrated into an automated control system for remote monitoring and automatic adjustment, reducing manual intervention and improving operational accuracy and efficiency.

[0093] In this way, on the one hand, the flow rate of the liquid can be adjusted in real time according to different production loads or process requirements, ensuring the flexibility and adaptability of the system; on the other hand, by precisely controlling the flow rate of the liquid, the full contact between the liquid and the copper particles can be ensured, thereby improving reaction efficiency and copper particle utilization.

[0094] In addition, a stable flow rate of the plating solution helps maintain the consistency and stability of the electroplating process and avoids quality problems caused by flow fluctuations.

[0095] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, a second filter element 8 is provided in the first tank 11, and the second filter element 8 and the bottom of the first tank 11 define a drain cavity 111, and the first end of the return pipe 2 is connected to the drain cavity 111.

[0096] In this embodiment, the second filter element 8 is installed inside the first tank 11, near the bottom. On the one hand, the second filter element 8 can filter impurities, preventing large particles, undissolved substances, or other suspended matter from entering the return pipe 2 and subsequent circulation system with the medicine, protecting the pump and other equipment from blockage or contamination; on the other hand, the second filter element 8 can also provide support, allowing the medicine to be evenly distributed in the drain chamber 111, increasing the fluidity of the medicine and reducing sedimentation.

[0097] The drain chamber 111 is formed by the space between the second filter element 8 and the bottom of the first tank 11. The drain chamber 111 serves as a temporary storage area for the medicine, allowing it to collect before entering the return pipe 2. This ensures that when the medicine enters the return pipe 2 from the drain chamber 111, it is evenly distributed within a relatively small space and then slowly flows upward through the copper particle layer, ensuring sufficient contact between the medicine and the copper particles.

[0098] In summary, the second filter element 8 effectively blocks large particulate impurities and undissolved substances, ensuring that only purified medicine can enter the subsequent circulation system through the return pipe 2, protecting the pump and other equipment from clogging or contamination. Simultaneously, the presence of the drain chamber 111 allows the medicine to be evenly distributed before entering the return pipe 2, reducing turbulence and ensuring smooth flow of the medicine, further improving the overall performance of the system.

[0099] In addition, the design of the second filter element 8 and the drainage chamber 111 helps to maintain the uniform distribution of the medicine in the first tank 11, reduces the occurrence of sedimentation, and improves the stability of the system.

[0100] like Figure 1 As shown, the second filter element 8 is a circular filter screen plate, which is arranged around the central axis of the first tank 11, and the filter screen plate and the bottom of the first tank 11 form an annular drainage cavity 111.

[0101] like Figure 1 and Figure 2 As shown, according to some embodiments of this utility model, the copper melting tank 13 is equipped with a plurality of level gauges 94 to control the liquid level of the medicine. On the one hand, this prevents the medicine from overflowing the tank due to excessively high liquid level, and on the other hand, it prevents the pump from accidentally drawing in air due to excessively low liquid level. For example, there are three level gauges 94. The first level gauge 94 is located in the flow channel 133 and is set no higher than the lowest point of the flow channel 133. The second and third level gauges 94 extend into the medicine storage tank 132, and the two level gauges 94 have different depths.

[0102] like Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the reaction assembly includes an anode 91 and a cathode 92, and the nozzle assembly includes an anode nozzle 93. The anode 91 and the cathode 92 are disposed opposite to each other, and the anode nozzle 93 is adapted to spray the liquid medicine onto the anode 91.

[0103] In one specific embodiment, the trivalent iron copper dissolving circulation device includes a copper tank 1 and a copper dissolving tank 13. Of course, in some other embodiments, the number of copper tanks 1 can be two, three, or four, etc., and the number of copper dissolving tanks 13 can be two, three, or four, etc. In one specific embodiment, the number of anode elements 91 in the first tank 11 is sixteen, which can be evenly divided into two groups, each group including eight anode elements 91. The two groups of anode elements 91 are symmetrically arranged in the first tank 11, and the cathode element 92 can be arranged between the two groups of anode elements 91.

[0104] exist Figure 1 and Figure 2In the illustrated embodiment, the trivalent iron copper dissolving circulation device includes two sets of anodes 91 and a cathode 92 disposed between the two sets of anodes 91. An anode nozzle 93 is respectively provided between the two sets of anodes 91 and the side wall of the first tank 11. The circulation pump is connected to the anode nozzle 93, and the flow rate of the anode nozzle 93 can be controlled by the circulation pump.

[0105] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A copper-dissolving and circulating device for trivalent iron, characterized in that, include: A copper tank (1) includes a first tank body (11) and a second tank body (12) located below the first tank body (11). The first tank body (11) is adapted to contain a liquid medicine. A reaction assembly and a nozzle assembly are provided in the first tank body (11). The nozzle assembly is adapted to spray the liquid medicine onto the reaction assembly. A copper melting tank (13) is disposed in the second tank (12). A copper particle storage tank (131) and a medicine storage tank (132) are formed in the copper melting tank (13). A flow channel (133) is connected between the copper particle storage tank (131) and the medicine storage tank (132). The flow channel (133) is used to guide the regenerated medicine flowing out of the copper particle storage tank (131) to the medicine storage tank (132). The return pipe (2) has its first end connected to the first tank (11) and its opposite second end connected to the bottom of the copper particle storage tank (131); A circulating pump, the first end of which is connected to the liquid storage tank (132), and the opposite second end of which is connected to the nozzle assembly.

2. The trivalent iron copper dissolving and circulation device according to claim 1, characterized in that, The copper melting tank (13) is provided with a partition (4), which divides the copper melting tank (13) into a copper particle storage tank (131) and a medicine storage tank (132) arranged side by side in the horizontal direction.

3. The ferric iron copper dissolving and recycling device according to claim 2, characterized in that, The top of the partition (4) is spaced apart from the top of the copper melting tank (13) to form the flow channel (133). The top of the copper particle storage tank (131) is open to form an overflow port. The top of the medicine storage tank (132) is open to form an inlet port. The overflow port, the flow channel (133) and the inlet port are connected in sequence.

4. The ferric iron copper dissolving and recycling device according to claim 2, characterized in that, The circulation pump inlet (3) formed at the first end of the circulation pump is connected to the bottom of the medicine storage tank (132).

5. The trivalent iron copper dissolving and recycling device according to claim 2, characterized in that, The copper particle storage tank (131) is provided with a first filter element (5) for filtering copper particles. The first filter element (5) and the bottom of the copper particle storage tank (131) define a reflux cavity (1311). The second end of the reflux pipe (2) is connected to the reflux cavity (1311).

6. The ferric iron copper dissolving and recycling device according to claim 5, characterized in that, At least one of the return pipes (2) has a drain pipe (21) connected to its second end. The drain pipe (21) is located inside the return cavity (1311) and extends in a direction away from the partition (4).

7. The ferric iron copper dissolving circulation device according to claim 2, characterized in that, Also includes: An overflow pipe (6) has its first end connected to the interior of the copper melting tank (13) and communicating with the flow channel (133), and its opposite second end connected to the exterior of the copper melting tank (13). In the height direction of the copper melting tank (13), the first end of the overflow pipe (6) is located between the top of the partition plate (4) and the top of the copper melting tank (13).

8. The trivalent iron copper-dissolving circulation device according to any one of claims 1 to 7, characterized in that, The return pipe (2) is equipped with an electric valve (7) with adjustable opening.

9. The trivalent iron copper dissolving and recycling device according to any one of claims 1 to 7, characterized in that, The first tank (11) is provided with a second filter element (8), and the second filter element (8) and the bottom of the first tank (11) define a drain cavity (111), and the first end of the return pipe (2) is connected to the drain cavity (111).

10. The trivalent iron copper smelting and circulation device according to any one of claims 1 to 7, characterized in that, The reaction assembly includes an anode (91) and a cathode (92), and the nozzle assembly includes an anode nozzle (93) and a cathode nozzle. The anode (91) and the cathode (92) are disposed opposite to each other. The anode nozzle (93) is adapted to spray the liquid medicine onto the anode (91), and the cathode nozzle is adapted to spray the liquid medicine onto the cathode (92).

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