Purification equipment and method for preparing copper stripping solution

Abstract

The application discloses a kind of purification equipment and method for preparing copper stripping liquid, it is related to copper stripping liquid preparation technical field, including centrifugal mechanism, the centrifugal mechanism includes first centrifugal component and second centrifugal component;The first centrifugal component includes fixed unit and first rotating unit, and the first rotating unit is connected with fixed unit;The second centrifugal component includes output unit and second rotating unit, and the second rotating unit is connected with fixed unit, and the output unit is connected with first rotating unit and second rotating unit respectively;Copper stripping liquid is separated in centrifugal mechanism multiple times, so that small and medium-sized particles in copper stripping liquid are separated, by the cooperation of first centrifugal component and second centrifugal component, the flow potential energy generated by the vertical flow of copper stripping liquid is utilized, the efficiency of copper stripping liquid separation treatment is improved while reducing energy consumption, and the quality of copper stripping liquid separation treatment is improved by multiple separation.

Description

Technical Field

[0001] This invention relates to the field of copper stripping solution preparation technology, specifically a purification device and method for preparing copper stripping solution. Background Technology

[0002] Copper stripping solution is a key chemical solution used in the electronics manufacturing industry, such as printed circuit boards (PCBs) and semiconductor packaging, to remove the surface copper layer. During the preparation of copper stripping solution, since the raw materials contain solid particles such as copper particles, oxides, and organic impurities, these impurities need to be removed by purification equipment to ensure the purity and reaction efficiency of the stripping solution.

[0003] Common purification methods include filtration, precipitation, and centrifugation. However, existing equipment often uses a single separation method when processing copper stripping fluid containing particles of different sizes. This single separation method is difficult to remove large and fine particles efficiently at the same time, resulting in the purified liquid still containing residual solids, which affects the quality of subsequent processes. Summary of the Invention

[0004] The purpose of this invention is to provide a purification device and method for preparing copper stripping solution, so as to solve the problem of low separation efficiency in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A purification device for preparing copper stripping fluid includes a separation mechanism and a precipitation mechanism. The separation mechanism is used to separate liquid and large particles, and the precipitation mechanism is used to precipitate impurities in the liquid. The device also includes a centrifugation mechanism, which includes a first centrifugation component and a second centrifugation component.

[0007] The first centrifugal assembly includes a fixed unit and a first rotating unit. The first rotating unit is connected to the fixed unit, and the fixed unit is connected to the separation mechanism. The first rotating unit rotates under the impact of the copper stripping liquid and performs intermittent separation of the copper stripping liquid during the rotation process.

[0008] The second centrifugal assembly includes an output unit and a second rotating unit. The second rotating unit is connected to a fixed unit. The output unit is connected to both the first rotating unit and the second rotating unit. The output unit is connected to a sedimentation mechanism. The second rotating unit performs a second centrifugal separation on the solid impurities separated by the first centrifugal assembly.

[0009] The copper stripping solution is first transported to a separation unit, where large particles are separated. The pre-separated solution is then transported to a centrifuge unit, where it undergoes multiple separation processes to separate smaller particles, thus separating the liquid. After further separation, the solution is transported to a sedimentation unit where minute impurities are precipitated, resulting in the final copper stripping solution, achieving purification. Through the cooperation of the first and second centrifuge components, the flow potential energy generated by the vertical flow of the copper stripping solution is utilized to further separate the liquid and solid components while reducing energy consumption. This improves energy utilization, increases the efficiency of the copper stripping solution separation process, and enhances the quality of the separation process through multiple separation steps.

[0010] Preferably, the fixing unit includes a fixing group and a plurality of conveying groups, wherein the plurality of conveying groups are connected to the fixing group;

[0011] The first rotating unit includes a first rotating group, which is connected to the conveying group;

[0012] The output unit includes a first output group and a second output group, which are respectively connected to the conveying group;

[0013] The second rotating unit includes a second rotating group, which is connected to a second output group.

[0014] The copper stripping fluid conveyed in the conveying group is separated by the first and second rotating groups, so that the separated liquid is conveyed through the first and second output groups, while the separated solid impurities are discharged outward through the conveying group.

[0015] Preferably, the fixing assembly includes an outer ring and an inner ring, with the outer ring disposed outside the inner ring;

[0016] The conveying assembly includes a first conveying channel, a rotating cavity, and a second conveying channel. The first conveying channel is disposed on the outer ring, the rotating cavity is disposed between the first and second conveying channels, and the second conveying channel is disposed on the inner ring.

[0017] The first rotating assembly includes a rotating ball, which is rotatably connected to the rotating cavity.

[0018] The copper stripping fluid is conveyed to the fixed group through the conveying assembly. The copper stripping fluid first passes through the space between the conveying pipe and the outer ring, and then flows to several conveying groups. The copper stripping fluid first enters the first conveying channel and is conveyed to the rotating chamber through the first conveying channel. Since the rotating ball is located in the rotating chamber, the copper stripping fluid will impact the rotating ball during the flow, thereby driving the rotating ball to rotate. At the same time, the rotating ball conveys the copper stripping fluid. The copper stripping fluid will undergo the first separation process in the rotating chamber, so that the copper stripping fluid will centrifuge and separate the liquid and solid impurities in the rotating chamber. The separated solid impurities are then conveyed to the second conveying channel.

[0019] Preferably, the first output group includes a plurality of first centrifuge holes, and the plurality of first centrifuge holes are disposed on the side of the rotating cavity near the outer ring;

[0020] The second output group includes a plurality of second centrifuge holes, which are disposed on the side of the outer ring away from the second conveying channel;

[0021] The second rotating assembly includes a power component and a rotating plate. The power component is disposed on the inner ring and connected to the rotating plate. The rotating plate is rotatably connected to the outer ring.

[0022] Since the first conveying channel is located on the outer ring, and thus on the tangent of the rotating cavity, when the copper stripping solution is conveyed from the first conveying channel to the rotating cavity, the copper stripping solution enters along the tangent of the rotating cavity and flows along the side of the rotating cavity. During the flow of the copper stripping solution, it will encounter the first centrifuge hole, and the liquid in the copper stripping solution will be discharged to the side away from the rotating cavity through the first centrifuge hole. Thus, the copper stripping solution achieves the first separation in the rotating cavity.

[0023] The separated solid impurities are then transported through the rotating chamber to the second conveyor channel, and from there to one side of the second rotating group. During the movement of the solid impurities, the controller activates the power unit, which drives the rotating plate to rotate. As the rotating plate rotates, it encounters the transported solid impurities, and further centrifuges the solid impurities. This causes the liquid adhering to and entrained on the solid impurities to detach from them during the further centrifugation process, thus achieving a second centrifugation treatment. The liquid that has been separated by centrifugation moves towards the side closer to the second centrifuge hole and is eventually discharged through the second centrifuge hole.

[0024] Preferably, the conveying assembly further includes a fluid pipe and a solid pipe, the fluid pipe being located outside the solid pipe, the fluid pipe being connected to the first centrifugal orifice and the second centrifugal orifice respectively, and the solid pipe being connected to the second conveying channel.

[0025] The liquid transported through the first and second centrifuge holes flows into the fluid tube and then into the sedimentation mechanism for further sedimentation and separation. The solid impurities separated by the first and second centrifuge processes are transported into the solid tube and eventually discharged.

[0026] Preferably, the rotating ball is provided with a plurality of rotating plates, and a power groove and a pulsating groove are respectively provided on both sides of the rotating plates. The pulsating groove is located on the side of the rotating plate near the first centrifugal hole, and the length of the pulsating groove is greater than the length of the power groove.

[0027] As the copper stripping solution flows along the first conveyor channel into the rotating cavity, it first encounters the power tank, which then impacts the power tank. This impact generates rotational force, causing the power tank to rotate and drive the rotating ball to rotate. The rotating ball continuously and intermittently conveys the copper stripping solution to the side of the rotating cavity closest to the first centrifuge hole. As the copper stripping solution flows along the first conveyor channel into the rotating cavity, it is discharged through the first centrifuge hole under the action of kinetic potential energy. The copper stripping solution intermittently enters the two adjacent power tanks and the agitator tank, allowing it to undergo intermittent separation in the rotating cavity, thereby improving the separation quality of the first separation of the copper stripping solution.

[0028] During the rotation of the rotating ball, the rotating ball will drive the agitator groove to rotate, causing the agitator groove to rotate along the side of the rotating cavity. When the solid impurities of the copper stripping solution are isolated outside the first centrifuge hole, the agitator groove will agitate the solid impurities, causing the solid impurities to be transported from the rotating cavity to the second conveying channel.

[0029] Preferably, the centrifugation mechanism further includes a conveying assembly, which includes a conveying pipe and a deflection unit;

[0030] The deflection unit includes a global tooth, a hemispherical tooth, and a power component. The global tooth is disposed on the inner ring and meshes with the hemispherical tooth for transmission. The power component is connected to the global tooth. A deflection column is disposed on the side of the hemispherical tooth away from the global tooth. A variable diameter auger is disposed outside the deflection column. The variable diameter auger is rotatably connected to the conveying pipe. The deflection column is rotatably connected to the conveying pipe through a bracket. A telescopic pipe is disposed between the conveying pipe and the outer ring.

[0031] The controller starts the power unit, which drives the global gear to rotate. During the rotation, the global gear meshes with the hemispherical gear, which in turn drives the hemispherical gear to deflect and rotate. When the global gear drives the hemispherical gear to deflect, the hemispherical gear drives the deflection column to deflect. During the deflection, the deflection column drives the variable diameter auger to deflect. During the deflection, the variable diameter auger drives the conveying pipe to deflect. After the conveying pipe deflects, the side of the conveying pipe near the outer ring will be aligned with one of the conveying groups, so that the copper stripping fluid in the conveying pipe can flow from the conveying pipe to the conveying group. This prevents the copper stripping fluid from falling into the space between the conveying pipe and the outer ring, thus avoiding the loss of the flow potential energy of the copper stripping fluid. This ensures the flow speed of the copper stripping fluid when entering the conveying group.

[0032] When the global tooth drives the hemispherical tooth to rotate, the hemispherical tooth drives the deflection column to rotate, and the deflection column drives the variable diameter auger to rotate, so that the variable diameter auger rotates and separates the copper stripping liquid in the delivery pipe, thereby achieving the pretreatment of the copper stripping liquid.

[0033] Preferably, the top diameter of the conveying pipe is larger than the bottom diameter of the conveying pipe, and the top diameter of the variable diameter auger is larger than the bottom diameter of the variable diameter auger.

[0034] Preferably, the centrifugation mechanism further includes a housing, and the first centrifugation component and the second centrifugation component are disposed inside the housing.

[0035] A purification method for a purification device used in the preparation of copper stripping fluid, the purification method comprising the following specific steps:

[0036] S1. Copper stripping fluid is conveyed to the separation unit, where large particulate impurities are separated.

[0037] S2. The copper stripping solution, after being separated into large particles, is transported from the separation mechanism to the centrifugal mechanism.

[0038] S3, copper stripping fluid is conveyed to the centrifugal mechanism;

[0039] S4. The copper stripping solution is conveyed to the first centrifugal assembly through the conveying assembly and undergoes the first separation process.

[0040] S5. The copper stripping solution after the first separation is conveyed to the second centrifugal assembly for a second separation process.

[0041] S6. The copper stripping solution after the second separation is transported to the sedimentation unit through the conveying group;

[0042] S7. The copper stripping solution undergoes impurity precipitation treatment in the precipitation mechanism.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. The system employs a dual centrifugal design combining a first centrifugal component and a second centrifugal component. The first centrifugal component utilizes the flow potential energy of the copper stripping fluid itself to drive the rotating ball and its rotating plates to rotate. This completes the first efficient centrifugal separation of small and medium-sized particles without the need for additional power, significantly reducing the overall energy consumption of the equipment. The second centrifugal component then performs a second centrifugal stripping of any residual liquid that may adhere to the surface of the solid impurities after the first separation, using an actively driven rotating plate. This greatly improves the liquid recovery rate and the quality of the separation.

[0045] 2. The first conveying channel is set along the tangential direction of the rotating cavity, so that the copper stripping liquid forms a vortex as soon as it enters, which enhances the initial power of centrifugal separation. The first centrifugal hole set on the side wall of the rotating cavity can efficiently and timely export the clear liquid separated in the vortex. The power groove and actuation groove design on the rotating ball not only effectively converts the impact energy of the liquid flow into rotational mechanical energy, but also realizes the directional delivery of solid impurities, ensuring that the separation process is continuous and smooth. The independent setting of the fluid pipe and solid pipe in the conveying group realizes the complete separation of solid and liquid flow paths and avoids secondary mixing. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0047] Figure 2 This is an internal front view of the present invention;

[0048] Figure 3 This is a schematic diagram of the internal structure of the first centrifugal assembly and the second centrifugal assembly;

[0049] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0050] Figure 5 This is a schematic diagram of the exploded structure of the first centrifugal assembly and the second centrifugal assembly;

[0051] Figure 6 Exploded front view of the first centrifuge assembly and the second centrifuge assembly;

[0052] Figure 7 This is a schematic diagram of the rotating sphere.

[0053] Figure 8 This is a cross-sectional view of the rotating sphere;

[0054] In the diagram: 1. Centrifuge mechanism; 11. Outer casing;

[0055] 2. First centrifugal assembly; 21. Fixed unit; 22. First rotating unit; 23. Fixed group; 231. Outer ring; 232. Inner ring; 24. Conveying group; 241. First conveying channel; 242. Rotating cavity; 243. Second conveying channel; 244. Fluid pipe; 245. Solid pipe; 25. First rotating group; 26. Rotating ball; 261. Rotating plate; 262. Power groove; 263. Actuating groove;

[0056] 3. Second centrifugal assembly; 31. Output unit; 32. Second rotation unit; 33. First output group; 331. First centrifugal orifice; 34. Second output group; 341. Second centrifugal orifice; 35. Second rotation group; 351. Rotating plate;

[0057] 4. Conveying assembly; 41. Conveying pipe; 42. Deflection unit; 421. Global tooth; 422. Hemispherical tooth; 423. Deflection column; 424. Variable diameter auger; 43. Telescopic pipe. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] Example: Figures 1-8 As shown, the present invention provides a purification equipment and method for preparing copper stripping solution, including a separation mechanism and a precipitation mechanism. The separation mechanism is used to separate liquid and large particles, and the precipitation mechanism is used to precipitate impurities in the liquid. It also includes a centrifugation mechanism 1, which includes a first centrifugation component 2 and a second centrifugation component 3.

[0060] The first centrifugal assembly 2 includes a fixed unit 21 and a first rotating unit 22. The first rotating unit 22 is connected to the fixed unit 21, and the fixed unit 21 is connected to the separation mechanism. The first rotating unit 22 rotates under the impact of the copper stripping liquid and performs intermittent separation of the copper stripping liquid during the rotation process.

[0061] The second centrifugal assembly 3 includes an output unit 31 and a second rotating unit 32. The second rotating unit 32 is connected to the fixed unit 21. The output unit 31 is connected to the first rotating unit 22 and the second rotating unit 32 respectively. The output unit 31 is connected to the sedimentation mechanism. The second rotating unit 32 performs a second centrifugal separation on the solid impurities separated by the first centrifugal assembly 2.

[0062] In one specific embodiment of the present invention, the centrifuge mechanism 1 further includes a housing 11, the first centrifuge component 2 and the second centrifuge component 3 are disposed inside the housing 11, and a telescopic component (a telescopic sleeve) is provided between the housing 11 and the conveying pipe 41.

[0063] In one specific embodiment of the present invention, the fixing unit 21 includes a fixing group 23 and a plurality of conveying groups 24, wherein the plurality of conveying groups 24 are connected to the fixing group 23.

[0064] The first rotating unit 22 includes a first rotating assembly 25, which is connected to the conveying assembly 24;

[0065] The output unit 31 includes a first output group 33 and a second output group 34, and the first output group 33 and the second output group 34 are respectively connected to the conveying group 24;

[0066] The second rotating unit 32 includes a second rotating group 35, which is connected to the second output group 34.

[0067] In one specific embodiment of the present invention, the fixing group 23 includes an outer ring 231 and an inner ring 232, wherein the outer ring 231 is disposed outside the inner ring 232;

[0068] The conveying group 24 includes a first conveying channel 241, a rotating cavity 242, and a second conveying channel 243. The first conveying channel 241 is disposed on the outer ring 231, the rotating cavity 242 is disposed between the first conveying channel 241 and the second conveying channel 243, and the second conveying channel 243 is disposed on the inner ring 232.

[0069] The first rotating assembly 25 includes a rotating ball 26, which is rotatably connected to the rotating cavity 242.

[0070] As a specific embodiment of the present invention, the first output group 33 includes a plurality of first centrifugal holes 331, and the plurality of first centrifugal holes 331 are disposed on the side of the rotating cavity 242 near the outer ring 231.

[0071] The second output group 34 includes a plurality of second centrifugal holes 341, which are disposed on the side of the outer ring 231 away from the second conveying channel 243;

[0072] The second rotating assembly 35 includes a power component (the power component is a motor) and a rotating plate 351. The power component is disposed on the inner ring 232 and connected to the rotating plate 351. The rotating plate 351 is rotatably connected to the outer ring 231.

[0073] In one specific embodiment of the present invention, the conveying group 24 further includes a fluid pipe 244 and a solid pipe 245. The fluid pipe 244 is located outside the solid pipe 245. The fluid pipe 244 is connected to the first centrifugal hole 331 and the second centrifugal hole 341 respectively. The solid pipe 245 is connected to the second conveying channel 243.

[0074] In one specific embodiment of the present invention, the rotating ball 26 is provided with a plurality of rotating plates 261. The two sides of the rotating plates 261 are respectively provided with a power groove 262 and a swivel groove 263. The swivel groove 263 is located on the side of the rotating plate 261 near the first centrifugal hole 331, and the length of the swivel groove 263 is greater than the length of the power groove 262.

[0075] In one specific embodiment of the present invention, the centrifugal mechanism 1 further includes a conveying assembly 4, which includes a conveying pipe 41 and a deflection unit 42;

[0076] The deflection unit 42 includes a global gear 421, a hemispherical gear 422, and a power component (the power component is a combination of a motor and gears). The global gear 421 is disposed on the inner ring 232, and the global gear 421 meshes with the hemispherical gear 422 for transmission. The power component is connected to the global gear 421. A deflection column 423 is disposed on the side of the hemispherical gear 422 away from the global gear 421. A variable diameter auger 424 is disposed outside the deflection column 423. The variable diameter auger 424 is rotatably connected to the conveying pipe 41. The deflection column 423 is rotatably connected to the conveying pipe 41 through a bracket. A telescopic pipe 43 is disposed between the conveying pipe 41 and the outer ring 231.

[0077] In one specific embodiment of the present invention, the top diameter of the conveying pipe 41 is greater than the bottom diameter of the conveying pipe 41, and the top diameter of the variable diameter auger 424 is greater than the bottom diameter of the variable diameter auger 424.

[0078] A purification method for a purification device used in the preparation of copper stripping fluid, the purification method comprising the following specific steps:

[0079] S1. Copper stripping fluid is conveyed to the separation unit, where large particulate impurities are separated.

[0080] S2. The copper stripping solution, after being separated into large particles, is transported from the separation mechanism to the centrifugal mechanism 1.

[0081] S3, copper stripping fluid is conveyed to centrifugal mechanism 1;

[0082] S4. The copper stripping solution is conveyed to the first centrifugal assembly 2 through the conveying assembly 4 and undergoes the first separation process.

[0083] S5. The copper stripping solution after the first separation is conveyed to the second centrifugal assembly 3 for a second separation process.

[0084] S6. The copper stripping solution after the second separation is conveyed to the sedimentation mechanism through the conveying group 24;

[0085] S7. The copper stripping solution undergoes impurity precipitation treatment in the precipitation mechanism.

[0086] Working principle of the invention:

[0087] The controller starts the power component, which drives the global gear 421 to rotate. During the rotation, the global gear 421 meshes with the hemispherical gear 422, which in turn drives the hemispherical gear 422 to deflect and rotate. When the global gear 421 drives the hemispherical gear 422 to deflect, the hemispherical gear 422 drives the deflection column 423 to deflect. During the deflection, the deflection column 423 drives the variable diameter auger 424 to deflect. During the deflection, the variable diameter auger 424 drives the conveying pipe 41 to deflect. After the conveying pipe 41 deflects, the side of the conveying pipe 41 near the outer ring 231 will be aligned with one of the conveying groups 24, so that the copper stripping fluid in the conveying pipe 41 can flow from the conveying pipe 41 to the conveying group 24. This prevents the copper stripping fluid from falling into the space between the conveying pipe 41 and the outer ring 231, thereby causing the loss of the flow potential energy of the copper stripping fluid. This ensures the flow speed of the copper stripping fluid when entering the conveying group 24.

[0088] When the global tooth 421 drives the hemispherical tooth 422 to rotate, the hemispherical tooth 422 drives the deflection column 423 to rotate, and the deflection column 423 drives the variable diameter auger 424 to rotate, so that the variable diameter auger 424 performs rotational separation treatment on the copper stripping liquid in the conveying pipe 41, thereby realizing the pretreatment of the copper stripping liquid.

[0089] The copper stripping fluid is conveyed to the fixed group 23 through the conveying assembly 4. The copper stripping fluid first passes through the space between the conveying pipe 41 and the outer ring 231, and then flows to several conveying groups 24. The copper stripping fluid first enters the first conveying channel 241 and is conveyed to the rotating cavity 242 through the first conveying channel 241. Since the rotating ball 26 is located in the rotating cavity 242, the copper stripping fluid will impact the rotating ball 26 during the flow, and thus the copper stripping fluid will drive the rotating ball 26 to rotate. At the same time, the rotating ball 26 is conveying the copper stripping fluid. The copper stripping fluid will undergo the first separation process in the rotating cavity 242, so that the copper stripping fluid will centrifuge and separate the liquid and solid impurities in the rotating cavity 242. The separated solid impurities are then conveyed to the second conveying channel 243.

[0090] As the copper stripping solution flows along the first conveyor channel 241 towards the rotating cavity 242, it first encounters the power tank 262, which then impacts the power tank 262. This impact generates rotational force in the power tank 262, causing the rotating ball 26 to rotate. The rotating ball 26 continuously and intermittently conveys the copper stripping solution towards the side of the rotating cavity 242 closest to the first centrifugal orifice 331. Because the copper stripping solution flows along the first conveyor channel 241 towards the rotating cavity 242, it is discharged through the first centrifugal orifice 331 under the influence of kinetic energy. The copper stripping solution intermittently enters the two adjacent power tanks 262 and the agitator 263, allowing for intermittent separation within the rotating cavity 242, thereby improving the separation quality of the first separation.

[0091] During the rotation of the rotating ball 26, the rotating ball 26 will drive the agitator 263 to rotate, so that the agitator 263 will rotate along the side of the rotating cavity 242. When the solid impurities of the copper stripping solution are isolated outside the first centrifuge hole 331, the agitator 263 will agitate the solid impurities, so that the solid impurities are transported from the rotating cavity 242 to the second conveying channel 243.

[0092] Since the first conveying channel 241 is located on the outer ring 231, and thus the first conveying channel 241 is located on the tangent of the rotating cavity 242, when the copper stripping liquid is conveyed from the first conveying channel 241 to the rotating cavity 242, the copper stripping liquid enters along the tangent direction of the rotating cavity 242 and flows along the side of the rotating cavity 242. During the flow of the copper stripping liquid, it will encounter the first centrifugal hole 331, and the liquid in the copper stripping liquid will be discharged to the side away from the rotating cavity 242 through the first centrifugal hole 331. Thus, the copper stripping liquid achieves the first separation in the rotating cavity 242.

[0093] The separated solid impurities are transported to the second conveyor channel 243 through the rotating chamber 242, and then moved to one side of the second rotating group 35 from the second conveyor channel 243. During the movement of the solid impurities, the controller controls the power component to start, and the power component drives the rotating plate 351 to rotate. The rotating plate 351 encounters the transported solid impurities during the rotation process, and then the rotating plate 351 further rotates and centrifuges the solid impurities, so that the liquid attached to and entrained on the solid impurities is separated from the solid impurities during the further centrifugation process, thereby realizing the second centrifugation process. The liquid separated by centrifugation moves to the side closer to the second centrifugation hole 341 and is finally discharged through the second centrifugation hole 341.

[0094] The liquid transported through the first centrifuge hole 331 and the second centrifuge hole 341 flows into the fluid pipe 244 and finally flows into the sedimentation mechanism for further sedimentation and separation. The solid impurities separated by the first and second centrifugation processes are transported into the solid pipe 245 and finally discharged.

[0095] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A purification device for preparing copper stripping solution, comprising a separation mechanism and a precipitation mechanism, wherein the separation mechanism is used to separate liquid and large particles, and the precipitation mechanism is used to precipitate impurities in the liquid, characterized in that: It also includes a centrifugation mechanism (1), which includes a first centrifugation component (2) and a second centrifugation component (3); The first centrifugal assembly (2) includes a fixed unit (21) and a first rotating unit (22). The first rotating unit (22) is connected to the fixed unit (21), and the fixed unit (21) is connected to the separation mechanism. The first rotating unit (22) rotates under the impact of the copper stripping liquid and performs intermittent separation of the copper stripping liquid during the rotation process. The second centrifugal assembly (3) includes an output unit (31) and a second rotating unit (32). The second rotating unit (32) is connected to the fixed unit (21). The output unit (31) is connected to the first rotating unit (22) and the second rotating unit (32) respectively. The output unit (31) is connected to the sedimentation mechanism. The second rotating unit (32) performs a second centrifugal separation on the solid impurities separated by the first centrifugal assembly (2). The fixing unit (21) includes a fixing group (23) and a plurality of conveying groups (24), wherein the plurality of conveying groups (24) are connected to the fixing group (23); The first rotating unit (22) includes a first rotating assembly (25), which is connected to the conveying assembly (24); the first rotating assembly (25) includes a rotating ball (26); The fixing assembly (23) includes an outer ring (231) and an inner ring (232), wherein the outer ring (231) is disposed outside the inner ring (232); The conveying assembly (24) includes a first conveying channel (241), a rotating cavity (242), and a second conveying channel (243). The first conveying channel (241) is disposed on the outer ring (231), the rotating cavity (242) is disposed between the first conveying channel (241) and the second conveying channel (243), and the second conveying channel (243) is disposed on the inner ring (232). The rotating ball (26) is rotatably connected to the rotating cavity (242). The output unit (31) includes a first output group (33) and a second output group (34). The first output group (33) includes a plurality of first centrifugal holes (331), which are disposed on the side of the rotating cavity (242) near the outer ring (231). The second output group (34) includes a plurality of second centrifugal holes (341), which are disposed on the side of the outer ring (231) away from the second conveying channel (243). The second rotating unit (32) includes a second rotating group (35), the second rotating group (35) includes a power component and a rotating plate (351), the power component is disposed on the inner ring (232), the power component is connected to the rotating plate (351), and the rotating plate (351) is rotatably connected to the outer ring (231); The rotating ball (26) is provided with a plurality of rotating plates (261). The rotating plates (261) are provided with a power groove (262) and a swivel groove (263) on both sides respectively. The swivel groove (263) is located on the side of the rotating plate (261) near the first centrifugal hole (331). The length of the swivel groove (263) is greater than the length of the power groove (262).

2. The purification equipment for preparing copper stripping solution according to claim 1, characterized in that: The first output group (33) and the second output group (34) are respectively connected to the conveying group (24); the second rotating group (35) is connected to the second output group (34).

3. The purification equipment for preparing copper stripping solution according to claim 1, characterized in that: The conveying assembly (24) further includes a fluid pipe (244) and a solid pipe (245). The fluid pipe (244) is located outside the solid pipe (245). The fluid pipe (244) is connected to the first centrifuge hole (331) and the second centrifuge hole (341) respectively. The solid pipe (245) is connected to the second conveying channel (243).

4. The purification equipment for preparing copper stripping solution according to claim 1, characterized in that: The centrifugal mechanism (1) further includes a conveying assembly (4), which includes a conveying pipe (41) and a deflection unit (42); The deflection unit (42) includes a global tooth (421), a hemispherical tooth (422), and a power component. The global tooth (421) is disposed on the inner ring (232), and the global tooth (421) meshes with the hemispherical tooth (422) for transmission. The power component is connected to the global tooth (421). A deflection column (423) is disposed on the side of the hemispherical tooth (422) away from the global tooth (421). A variable diameter auger (424) is disposed outside the deflection column (423). The variable diameter auger (424) is rotatably connected to the conveying pipe (41). The deflection column (423) is rotatably connected to the conveying pipe (41) through a bracket. A telescopic pipe (43) is disposed between the conveying pipe (41) and the outer ring (231).

5. The purification equipment for preparing copper stripping solution according to claim 4, characterized in that: The top diameter of the conveying pipe (41) is greater than the bottom diameter of the conveying pipe (41), and the top diameter of the variable diameter auger (424) is greater than the bottom diameter of the variable diameter auger (424).

6. The purification equipment for preparing copper stripping solution according to claim 1, characterized in that: The centrifugation mechanism (1) also includes a housing (11), and the first centrifugation component (2) and the second centrifugation component (3) are disposed inside the housing (11).

7. A purification method applied to a purification apparatus for preparing a copper stripping solution as described in any one of claims 1-6, characterized in that: The purification method includes the following specific steps: S1. Copper stripping fluid is conveyed to the separation unit, where large particulate impurities are separated. S2. The copper stripping solution after large particle separation is transported from the separation mechanism to the centrifugal mechanism (1); S3, copper stripping solution is conveyed to centrifugal mechanism (1); S4. The copper stripping solution is conveyed to the first centrifugal assembly (2) through the conveying assembly (4) and undergoes the first separation process. S5. The copper stripping solution after the first separation is transported to the second centrifugal assembly (3) and subjected to a second separation process. S6. The copper stripping solution after the second separation is conveyed to the precipitation mechanism through the conveying group (24); S7. The copper stripping solution undergoes impurity precipitation treatment in the precipitation mechanism.

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