Alkaline etching liquid regeneration and copper recovery system

Abstract

The utility model discloses an alkaline etching liquid regeneration and copper recovery system, and relates to the technical field of electrolytic copper, the alkaline etching liquid regeneration and copper recovery system comprises an electrolytic tank, a material receiving bin and a push rod motor, the top of the material receiving bin is provided with a through groove, two sides of the through groove are fixedly connected with scrapers for scraping copper, two sides of the top of the material receiving bin are fixedly connected with barrier strips, and the barrier strips are fixedly connected with the push rod motor. And a side through groove is formed in one side of the electrolytic tank, the material collecting bin is slidably connected with the inner wall of the side through groove in a penetrating mode, the bottom of a push rod of the push rod motor is fixedly connected with a second supporting frame, and the bottom of the second supporting frame is fixedly connected with a second electrode plate. The problems that copper accumulation attached to the surface of a cathode plate can reduce the precipitation efficiency of copper in waste liquid, the cathode plate needs to be taken out for copper scraping, then the cathode plate is reinstalled and fixed in an electrolytic tank, the process of taking out and putting back is tedious, and the electrolytic efficiency is greatly reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic copper technology, specifically to an alkaline etching solution regeneration and copper recovery system. Background Technology

[0002] In the circuit board manufacturing process, the alkaline etching process is used to etch circuits onto copper films, which generates a large amount of copper-containing etching waste liquid. The copper ions in the etching waste liquid are usually removed by electrolysis. After obtaining an electrolyte with a low copper concentration, chloride ions and ammonium ions are added appropriately before returning it to the etching machine for recycling.

[0003] However, in traditional alkaline etching solution copper recycling systems, the accumulation of copper on the surface of the cathode plate reduces the copper precipitation efficiency in the waste liquid. The cathode plate needs to be removed for copper scraping and then reinstalled and fixed in the electrolytic cell. The removal and return process is cumbersome and greatly reduces the electrolysis efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an alkaline etching solution regeneration and copper recovery system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an alkaline etching solution regeneration and copper recovery system, comprising an electrolytic cell, and further comprising,

[0006] The receiving bin has a through groove on its top and scrapers fixedly connected to both sides of the through groove for scraping copper. The receiving bin also has baffles fixedly connected to both sides of its top to prevent the scraped copper from falling off. The electrolytic cell has a side through groove on one side and the receiving bin slides through the inner wall of the side through groove.

[0007] A push rod motor, wherein a support frame two is fixedly connected to the bottom of the push rod of the push rod motor, an electrode plate two is fixedly connected to the bottom of the support frame two, a cathode plate is fixedly connected to the bottom of the electrode plate two, the cathode plate penetrates through and is slidably connected to the inner wall of the channel of the receiving bin, one side of the scraper is slidably connected to the surface of the cathode plate, and an opening is provided at the top of the electrolytic cell, the cathode plate penetrating through the opening of the electrolytic cell;

[0008] A support plate is fixedly connected to one side of the outer wall of the electrolytic cell, and the receiving bin is slidably connected to the top of the support plate. A baffle is fixedly connected to the top of the support plate away from the electrolytic cell.

[0009] Preferably, a top plate is fixedly connected to the top of the push rod motor, a support column is fixedly connected to the bottom of the top plate on the side away from the push rod motor, and a bottom plate is fixedly connected to the bottom of the support column.

[0010] Preferably, an anode plate is fixedly connected through the bottom of the electrolytic cell, an electrode plate is fixedly connected to the bottom of the anode plate, a support frame is fixedly connected to the bottom of the electrode plate, the top of the support frame is fixedly connected to the bottom of the electrolytic cell, and four legs are fixedly connected to the bottom of the support frame, with the bottom of the legs fixedly connected to the top of the base plate.

[0011] Preferably, a relay is fixedly connected to the top side of the base plate, and the relay is electrically connected to electrode plate one and electrode plate two via a power supply line.

[0012] Preferably, the inner wall of the electrolytic cell has a groove on the side away from the support plate, and the receiving bin slides into the inner wall of the groove on the side away from the baffle.

[0013] Preferably, limiting plates are fixedly connected to both sides of the bottom of the receiving bin, and sliding grooves are provided on both sides of the bottom of the side passage groove and the top of the support plate. The limiting plates are slidably connected to the inner wall of the sliding groove of the side passage groove and the support plate.

[0014] Preferably, an inlet pipe is fixedly connected to one side of the electrolytic cell, and an outlet pipe is fixedly connected to the other side of the electrolytic cell.

[0015] Preferably, the height of the connection between the liquid outlet pipe and the electrolytic cell is lower than the opening height of the side channel.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention integrates a receiving bin, a scraper, and a baffle. The receiving bin is pushed into the electrolytic cell through a side channel. The front end of the receiving bin is pushed into a groove and locked in place. The push rod motor is activated to push the cathode plate down. The cathode plate passes through the channel of the receiving bin, and the copper on its surface is scraped off by the scraper and falls onto the receiving bin. The scraper and baffle work together to prevent the scraped copper from falling back into the electrolytic cell. The electrolysis and copper scraping are integrated into one design. The copper scraping process only requires moving the cathode plate up, inserting it into the receiving bin, and then moving the cathode plate down to continue electrolysis. The operation is simple and efficient.

[0018] This invention improves operational efficiency by setting up a support plate. During electrolysis, the receiving bin is placed on the support plate, ready for copper scraping operations. After copper scraping is completed, the receiving bin can be removed from the support plate for copper recovery. This makes the movement of the receiving bin more stable and prevents copper from falling off. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the electrolytic cell of this utility model;

[0021] Figure 3 This is a disassembled schematic diagram of two parts of the electrode plate structure of this utility model;

[0022] Figure 4 This is a disassembled schematic diagram of the electrolytic cell structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the receiving bin structure of this utility model.

[0024] In the diagram: 1. Electrolytic cell; 2. Side passage trough; 3. Support plate; 4. Receiving bin; 5. Scraper; 6. Baffle; 7. Baffle plate; 8. Groove; 9. Anode plate; 10. Electrode plate one; 11. Support frame one; 12. Cathode plate; 13. Electrode plate two; 14. Support frame two; 15. Push rod motor; 16. Top plate; 17. Support column; 18. Bottom plate; 19. Support leg; 20. Relay; 21. Inlet pipe; 22. Outlet pipe; 23. Limiting plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This utility model provides a technical solution: an alkaline etching solution regeneration and copper recovery system, including an electrolytic cell 1, and further comprising,

[0027] The receiving bin 4 has a through groove on its top and scrapers 5 are fixedly connected to both sides of the through groove for scraping copper. The receiving bin 4 has baffles 6 fixedly connected to both sides of its top to prevent the scraped copper from falling. The electrolytic cell 1 has a side through groove 2 on one side and the receiving bin 4 slides through the inner wall of the side through groove 2.

[0028] A push rod motor 15 has a support frame 14 fixedly connected to the bottom of its push rod. An electrode plate 13 is fixedly connected to the bottom of the support frame 14. A cathode plate 12 is fixedly connected to the bottom of the electrode plate 13. The cathode plate 12 penetrates and slides through the inner wall of the groove of the receiving bin 4. One side of the scraper 5 is slidably connected to the surface of the cathode plate 12. An opening is provided at the top of the electrolytic cell 1, and the cathode plate 12 penetrates through the opening of the electrolytic cell 1.

[0029] A support plate 3 is fixedly connected to one side of the outer wall of the electrolytic cell 1. The receiving bin 4 is slidably connected to the top of the support plate 3. A baffle 7 is fixedly connected to the top of the support plate 3 away from the electrolytic cell 1. The receiving bin 4 is placed on the support plate 3, ready for copper scraping operations at any time, thus improving efficiency.

[0030] A top plate 16 is fixedly connected to the top of the push rod motor 15, and a support column 17 is fixedly connected to the bottom of the top plate 16 on the side away from the push rod motor 15. A bottom plate 18 is fixedly connected to the bottom of the support column 17. The top plate 16 provides support and fixation for the push rod motor 15.

[0031] An anode plate 9 is fixedly connected through the bottom of the electrolytic cell 1. An electrode plate 10 is fixedly connected to the bottom of the anode plate 9. A support frame 11 is fixedly connected to the bottom of the electrode plate 10. The top of the support frame 11 is fixedly connected to the bottom of the electrolytic cell 1. Support legs 19 are fixedly connected to the four corners of the bottom of the support frame 11. The bottom of the support legs 19 is fixedly connected to the top of the base plate 18, which supports the electrolytic cell 1 and fixes the anode plate 9 inside the electrolytic cell 1 and arranges them at intervals.

[0032] A relay 20 is fixedly connected to one side of the top of the base plate 18. The relay 20 is electrically connected to the first electrode plate 10 and the second electrode plate 13 through a power supply line. The relay 20 provides positive and negative inputs to the first electrode plate 10 and the second electrode plate 13, respectively.

[0033] A groove 8 is provided on the inner wall of the electrolytic cell 1 on the side away from the support plate 3. The receiving bin 4 is slidably inserted into the inner wall of the groove 8 on the side away from the baffle 7. The groove 8 supports the receiving bin 4, making the scraper 5 scrape more firmly.

[0034] Limiting plates 23 are fixedly connected to both sides of the bottom of the receiving bin 4. Sliding grooves are provided on both sides of the bottom of the side channel 2 and the top of the support plate 3. The limiting plates 23 are slidably connected to the inner wall of the sliding groove of the side channel 2 and the support plate 3, which restricts the sliding of the receiving bin 4 and prevents it from tilting and sliding down.

[0035] An inlet pipe 21 is fixedly connected to one side of the electrolytic cell 1, and an outlet pipe 22 is fixedly connected to the other side of the electrolytic cell 1. The height of the outlet pipe 22 is higher than that of the inlet pipe 21, so that the waste liquid in the electrolytic cell 1 gradually accumulates and is discharged from the outlet pipe 22.

[0036] The height of the connection between the liquid outlet pipe 22 and the electrolytic cell 1 is lower than the opening height of the side channel 2 to prevent waste liquid from leaking out of the side channel 2.

[0037] Working principle: Waste liquid is discharged into electrolytic cell 1 through inlet pipe 21 for electrolysis. The waste liquid gradually accumulates in electrolytic cell 1, and the liquid level gradually rises to outlet pipe 22, and then is discharged from outlet pipe 22. Relay 20 inputs the positive electrode to electrode plate 10 and the negative electrode to electrode plate 13. During electrolysis, copper ions in the waste liquid approach and adhere to the surface of cathode plate 12. After electrolysis for a period of time, a layer of copper adheres to the surface of cathode plate 12. The electrolysis process is stopped first, and then push rod motor 15 is started to pull cathode plate 12 up, so that the bottom of cathode plate 12 is higher than the opening height of side channel 2. Then, receiving bin 4 is pushed into electrolytic cell 1 through side channel 2, and the front end of receiving bin 4 is pushed into groove 8 and locked. Then push rod motor 15 is started to push cathode plate 12 down. Cathode plate 12 passes through the channel of receiving bin 4, and the copper on the surface is scraped off by scraper 5 and falls onto receiving bin 4. Scraper 5 and baffle 6 work together to... The electrode plate 12 acts as a barrier to prevent the scraped copper from falling back into the electrolytic cell 1. When the cathode plate 12 is reset, the bottom of the electrode plate 13 is attached to the top of the scraper 5, thus cleaning the surface of the cathode plate 12. Hold the handle on the side of the receiving hopper 4 and pull the receiving hopper 4 outward to bring out the scraped copper. Then remove the receiving hopper 4 from the support plate 3 to recover the copper. At the same time, turn on the relay 20 to continue the electrolysis operation. The electrolysis and copper scraping are integrated into one design. During the copper scraping process, simply move the cathode plate 12 up, insert the receiving hopper 4, and then move the cathode plate 12 down to continue the electrolysis. The operation process is simple and efficient. It solves the problem that in the traditional alkaline etching solution copper recycling system, the copper accumulation on the surface of the cathode plate reduces the copper precipitation efficiency in the waste liquid. It requires removing the cathode plate for copper scraping and then reinstalling and fixing the cathode plate in the electrolytic cell. The removal and return process is cumbersome and greatly reduces the electrolysis efficiency.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alkaline etching solution regeneration and copper recovery system, comprising an electrolytic cell (1), characterized in that: It also includes, The receiving bin (4) has a through groove on its top and scrapers (5) are fixedly connected on both sides of the through groove for scraping copper. The receiving bin (4) has baffles (6) fixedly connected on both sides of its top to prevent the scraped copper from falling. The electrolytic cell (1) has a side through groove (2) on one side and the receiving bin (4) slides through the inner wall of the side through groove (2). A push rod motor (15) is fixedly connected to a support frame two (14) at the bottom of the push rod of the push rod motor (15). An electrode plate two (13) is fixedly connected to the bottom of the support frame two (14). A cathode plate (12) is fixedly connected to the bottom of the electrode plate two (13). The cathode plate (12) penetrates and slides through the inner wall of the channel of the receiving bin (4). One side of the scraper (5) is slidably connected to the surface of the cathode plate (12). An opening is provided at the top of the electrolytic cell (1). The cathode plate (12) penetrates the inside of the opening of the electrolytic cell (1). A support plate (3) is fixedly connected to one side of the outer wall of the electrolytic cell (1), and the receiving bin (4) is slidably connected to the top of the support plate (3). A baffle (7) is fixedly connected to the top of the support plate (3) away from the electrolytic cell (1).

2. The alkaline etching solution regeneration and copper recovery system according to claim 1, characterized in that: A top plate (16) is fixedly connected to the top of the push rod motor (15), and a support column (17) is fixedly connected to the bottom of the top plate (16) on the side away from the push rod motor (15). A bottom plate (18) is fixedly connected to the bottom of the support column (17).

3. The alkaline etching solution regeneration and copper recovery system according to claim 1, characterized in that: An anode plate (9) is fixedly connected through the bottom of the electrolytic cell (1). An electrode plate (10) is fixedly connected to the bottom of the anode plate (9). A support frame (11) is fixedly connected to the bottom of the electrode plate (10). The top of the support frame (11) is fixedly connected to the bottom of the electrolytic cell (1). Support legs (19) are fixedly connected to the four corners of the bottom of the support frame (11). The bottom of the support legs (19) is fixedly connected to the top of the base plate (18).

4. The alkaline etching solution regeneration and copper recovery system according to claim 2, characterized in that: A relay (20) is fixedly connected to one side of the top of the base plate (18). The relay (20) is electrically connected to electrode plate one (10) and electrode plate two (13) through a power supply line.

5. The alkaline etching solution regeneration and copper recovery system according to claim 1, characterized in that: The inner wall of the electrolytic cell (1) is provided with a groove (8) on the side away from the support plate (3), and the receiving bin (4) is slidably inserted into the inner wall of the groove (8) on the side away from the baffle (7).

6. The alkaline etching solution regeneration and copper recovery system according to claim 1, characterized in that: The bottom sides of the receiving bin (4) are fixedly connected to limit plates (23), and the bottom of the side channel (2) and the top sides of the support plate (3) are provided with sliding grooves. The limit plate (23) is slidably connected to the inner wall of the sliding groove of the side channel (2) and the support plate (3).

7. The alkaline etching solution regeneration and copper recovery system according to claim 1, characterized in that: An inlet pipe (21) is fixedly connected to one side of the electrolytic cell (1), and an outlet pipe (22) is fixedly connected to the other side of the electrolytic cell (1).

8. The alkaline etching solution regeneration and copper recovery system according to claim 7, characterized in that: The height of the connection between the liquid outlet pipe (22) and the electrolytic cell (1) is lower than the opening height of the side channel (2).

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