Device for recovering circuit board etching waste liquid to produce basic copper chloride

Abstract

The invention relates to the technical field of basic copper chloride production, and discloses a device for producing basic copper chloride by recovering circuit board etching waste liquid, the device comprises a supporting box, the top of the supporting box is provided with a reaction kettle assembly, and the top of the supporting box is provided with an air heater, a supporting frame and a first weighing unit; a storage barrel assembly is arranged on the top of the supporting frame, and a driving motor is installed on the outer wall of the supporting box. The solution is added into the storage barrel main body, and the etching waste liquid is added into the reaction kettle main body at the same time, so that the control center monitors the weight in the reaction kettle main body through the first weighing unit, and calculates the weight of the required solution; and meanwhile, the control center detects the weight of the solution in the storage barrel assembly in real time through a second weighing unit, at the moment, a piston plate is sealed through a sealing plug, then an electromagnetic valve is opened, a servo motor is started, the servo motor drives a stud to rotate, and the stud drives a threaded sleeve to descend at a constant speed.

Description

Technical Field

[0001] This invention relates to the field of basic copper chloride production technology, specifically to an apparatus for producing basic copper chloride from circuit board etching waste liquid. Background Technology

[0002] Etching waste liquid is a hazardous waste generated from the etching process in electronic manufacturing such as PCB and semiconductor. It often contains high concentrations of copper ions, strong acids / alkalis, complexing agents and additives. It is highly corrosive and has a high content of heavy metals. Direct discharge is strictly prohibited. It requires professional recycling, copper extraction and harmless treatment.

[0003] Currently, in the production of basic copper chloride from etching waste liquid, a solution needs to be added to the waste liquid. However, in actual preparation, the solution is added manually, which is uncontrollable in terms of pouring speed and precise dosage, leading to an inability to achieve accurate proportions. Furthermore, after sedimentation, the solution needs to be filtered, and the filtered basic aluminum chloride needs to be dried. Meanwhile, the basic copper chloride discharged from the equipment accumulates and needs to be manually spread out before being transferred to the drying chamber via a conveyor belt. This transfer can cause the copper chloride to adhere to the conveyor belt surface and be carried away by the belt. Summary of the Invention

[0004] This invention provides an apparatus for recycling circuit board etching waste liquid to produce basic copper chloride, which solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: an apparatus for recycling circuit board etching waste liquid to produce basic copper chloride, comprising a support box, a reaction vessel assembly on the top of the support box, a hot air blower, a support frame, and a first weighing unit respectively installed on the top of the support box, a storage tank assembly on the top of the support frame, a drive motor installed on the outer wall of the support box, a water pump installed on the bottom of the support box, a water storage tank opened on the inner wall of the support box, a perforated conveyor belt installed on the output shaft of the drive motor, a leveling roller rotatably connected to the inner wall of the support box, a sprocket installed on the outer wall of the leveling roller, a collection box slidably connected to the inner wall of the support box, a second weighing unit installed on the top of the support frame, a fixing plate installed on the inner wall of the support box, a chain rotatably sleeved on the outer wall of the sprocket, a scraper on the outer wall of the fixing plate, a bolt rotatably connected to the inner wall of the scraper, a locking plate rotatably connected to the outer wall of the support box, a locking groove installed on the outer wall of the collection box, and a control center installed on the outer wall of the support box.

[0006] As a preferred embodiment of the present invention: the reactor assembly includes a reactor body, a stirring motor is installed on the top of the reactor body, a stirring shaft is installed on the output shaft of the stirring motor, a discharge valve is installed at the bottom of the reactor body, a nozzle is installed on the inner wall of the reactor body, and a feed pipe is installed on the top of the reactor body.

[0007] As a preferred embodiment of the present invention: the storage tank assembly includes a storage tank body, a piston plate slidably connected to the inner wall of the storage tank body, a sealing plug threadedly connected to the inner wall of the piston plate, an extension frame installed on the outer wall of the storage tank body, a horizontal plate installed on the top of the extension frame, a servo motor installed on the top of the horizontal plate, a stud installed on the output shaft of the servo motor, a threaded sleeve and a limiting rod respectively installed on the top of the piston plate, a solenoid valve installed at the bottom of the storage tank body, and a material conveying pipe installed at the bottom of the solenoid valve.

[0008] As a preferred embodiment of the present invention, the number of nozzles is four, and the four nozzles are arranged in a circumferential array on the inner wall of the reactor body.

[0009] As a preferred embodiment of the present invention, the stud is located on the inner wall of the threaded sleeve, and the stud and the threaded sleeve are connected by a thread.

[0010] As a preferred embodiment of the present invention: the outer wall of the piston plate is in contact with the inner wall of the storage tank body, and the limiting rod passes through the horizontal plate.

[0011] As a preferred embodiment of the present invention, the number of sprockets is two, and the two sprockets are located outside the belt drive shaft and the leveling roller, respectively, and the two sprockets are located inside the chain.

[0012] As a preferred embodiment of the present invention: the main body of the reactor is located above the first weighing unit, and the first weighing unit is electrically connected to the control center.

[0013] As a preferred embodiment of the present invention: the main body of the storage tank is located above the second weighing unit, and the main body of the storage tank and the servo motor are electrically connected to the control center.

[0014] As a preferred embodiment of the present invention: the top of the scraper is in contact with the surface of the perforated conveyor belt, and the scraper is located above the collection box.

[0015] The present invention has the following beneficial effects: 1. This device for recycling circuit board etching waste liquid to produce basic copper chloride involves adding a solution to the inside of a storage tank and simultaneously adding etching waste liquid to the inside of a reaction vessel. The control center monitors the weight inside the reaction vessel via a first weighing unit and calculates the required solution weight. Simultaneously, the control center monitors the solution weight inside the storage tank assembly in real time via a second weighing unit. At this point, a piston plate is sealed with a sealing plug. Then, a solenoid valve is opened and a servo motor is activated, causing the servo motor to rotate the stud. The stud drives the threaded sleeve to descend at a constant speed, causing the piston plate to descend at a constant speed. Simultaneously, the piston plate squeezes the solution inside the storage tank. The solution inside the storage tank then flows downwards into the reaction vessel through the solenoid valve and conveying pipe. When the weight of the solution lost from the storage tank reaches the calculated weight, the control center sends an electrical signal to the servo motor, causing it to shut down. This prevents the material inside the storage tank from flowing into the reaction vessel, allowing the equipment to perform quantitative feeding and uniform filling simultaneously.

[0016] 2. This device for recycling circuit board etching waste liquid to produce basic copper chloride works by starting a drive motor, which drives a belt drive shaft to rotate. The belt drive shaft drives a perforated conveyor belt and a sprocket to rotate, which in turn drives a chain to rotate. The perforated conveyor belt moves the material on top, which in turn drives a sprocket outside a leveling roller to rotate, causing the leveling roller to rotate. As the material passes over the leveling roller, it is spread out. At the same time, as the perforated conveyor belt rotates, its surface moves over a scraper, which scrapes off the material adhering to the surface of the perforated conveyor belt. The scraped material falls into the collection box. This device effectively spreads out the material while scraping off the material adhering to the surface of the perforated conveyor belt during material transport. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the back structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the chain structure of the present invention; Figure 5 This is a schematic diagram of the collection box structure of the present invention; Figure 6 This is a schematic diagram of the support frame structure of the present invention; Figure 7 This is a schematic cross-sectional view of the reactor assembly of the present invention; Figure 8 This is a schematic cross-sectional view of the storage tank assembly of the present invention.

[0018] In the diagram: 1. Support box; 2. Reactor assembly; 3. Hot air blower; 4. Support frame; 5. Storage tank assembly; 6. First weighing unit; 7. Drive motor; 8. Water pump; 9. Water storage tank; 10. Belt drive shaft; 11. Perforated conveyor belt; 12. Leveling roller; 13. Sprocket; 14. Collection box; 15. Second weighing unit; 16. Fixing plate; 17. Chain; 18. Scraper; 19. Bolt; 20. Locking groove; 21. Locking plate; 22. Control center; 201. Reactor body; 202. Stirring motor; 203. Stirring shaft; 204. Discharge valve; 205. Nozzle; 206. Feed pipe 501. Storage tank body; 502. Piston plate; 503. Sealing plug; 504. Extension frame; 505. Horizontal plate; 506. Servo motor; 507. Stud; 508. Threaded sleeve; 509. Limiting rod; 510. Solenoid valve; 511. Material conveying pipe. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-8 An apparatus for recycling circuit board etching waste liquid to produce basic copper chloride includes a support box 1, a reaction vessel assembly 2 on the top of the support box 1, a hot air blower 3, a support frame 4, and a first weighing unit 6 mounted on the top of the support box 1, a storage tank assembly 5 on the top of the support frame 4, a drive motor 7 mounted on the outer wall of the support box 1, a water pump 8 mounted on the bottom of the support box 1, a water storage tank 9 opened on the inner wall of the support box 1, a perforated conveyor belt 11 mounted on the output shaft of the drive motor 7, and a leveling roller rotatably connected to the inner wall of the support box 1. 12. A sprocket 13 is installed on the outer wall of the leveling roller 12. A collection box 14 is slidably connected to the inner wall of the support box 1. A second weighing unit 15 is installed on the top of the support frame 4. A fixing plate 16 is installed on the inner wall of the support box 1. A chain 17 is rotatably sleeved on the outer wall of the sprocket 13. A scraper 18 is provided on the outer wall of the fixing plate 16. A bolt 19 is rotatably connected to the inner wall of the scraper 18. A locking plate 21 is rotatably connected to the outer wall of the support box 1. A locking groove 20 is installed on the outer wall of the collection box 14. A control center 22 is installed on the outer wall of the support box 1.

[0021] In the above structure, the water pump 8 is located at the bottom of the water storage tank 9, so that the liquid passing through the chain 17 reaches the inside of the water storage tank 9 and flows along the inner wall of the water storage tank 9, and then flows upward to the water pump 8. By starting the water pump 8, the water pump 8 absorbs the liquid inside the water storage tank 9 and then transmits it to the outside.

[0022] In a preferred embodiment: the reactor assembly 2 includes a reactor body 201, a stirring motor 202 is installed on the top of the reactor body 201, a stirring shaft 203 is installed on the output shaft of the stirring motor 202, a discharge valve 204 is installed at the bottom of the reactor body 201, a nozzle 205 is installed on the inner wall of the reactor body 201, and a feed pipe 206 is installed on the top of the reactor body 201.

[0023] In the above structure, the bottom of the inner wall of the reactor body 201 is inclined, and the bottom of the inner wall of the reactor body 201 is connected to the discharge valve 204. Thus, when the liquid entering the reactor body 201 is discharged to the outside after the reaction and sedimentation are completed, the material inside the reactor body 201 flows through the inclined surface at the bottom of the reactor body 201 to the discharge valve 204 by opening the discharge valve 204, and is then discharged into the support box 1 through the discharge valve 204.

[0024] In a preferred embodiment: the storage tank assembly 5 includes a storage tank body 501, a piston plate 502 is slidably connected to the inner wall of the storage tank body 501, a sealing plug 503 is threadedly connected to the inner wall of the piston plate 502, an extension frame 504 is installed on the outer wall of the storage tank body 501, a horizontal plate 505 is installed on the top of the extension frame 504, a servo motor 506 is installed on the top of the horizontal plate 505, a stud 507 is installed on the output shaft of the servo motor 506, a threaded sleeve 508 and a limiting rod 509 are respectively installed on the top of the piston plate 502, a solenoid valve 510 is installed at the bottom of the storage tank body 501, and a feed pipe 511 is installed at the bottom of the solenoid valve 510.

[0025] In the above structure, there are two solenoid valves 510 and two conveying pipes 511, and the two solenoid valves 510 and two conveying pipes 511 are symmetrically arranged. At the same time, the bottom of the two conveying pipes 511 is located inside the reactor body 201, so that the material inside the storage tank body 501 can be transferred to the inside of the reactor body 201 through the conveying pipes 511.

[0026] In a preferred embodiment, the number of nozzles 205 is four, and the four nozzles 205 are arranged in a circumferential array on the inner wall of the reactor body 201.

[0027] In the above structure, the water source is connected to four nozzles 205 through water pipes, and the four nozzles 205 are activated to spray liquid, thereby rinsing the inner wall of the reactor body 201.

[0028] In a preferred embodiment, the stud 507 is located on the inner wall of the threaded sleeve 508, and the stud 507 and the threaded sleeve 508 are threadedly connected.

[0029] In the above structure, the servo motor 506 is started, causing the stud 507 to rotate. The stud 507, through its threaded connection with the threaded sleeve 508, causes the threaded sleeve 508 to move, which in turn causes the threaded sleeve 508 to move the piston plate 502.

[0030] In a preferred embodiment, the outer wall of the piston plate 502 is in contact with the inner wall of the storage tank body 501, and the limiting rod 509 passes through the horizontal plate 505.

[0031] In the above structure, the limiting rod 509 passes through the horizontal plate 505, so that the limiting rod 509 can only move linearly on the inner wall of the horizontal plate 505 when it moves, so that the limiting rod 509 will not rotate when it moves. At the same time, the piston plate 502 will not rotate. Meanwhile, the piston plate 502 fits against the inner wall of the storage tank body 501, and the sealing plug 503 seals the inside of the storage tank body 501, creating a negative pressure. The downward movement of the piston plate 502 squeezes the liquid inside the storage tank body 501 downward, so that the liquid inside the storage tank body 501 moves downward through the solenoid valve 510 and the conveying pipe 511.

[0032] In a preferred embodiment, there are two sprockets 13, and the two sprockets 13 are located outside the belt drive shaft 10 and the leveling roller 12, respectively, and inside the chain 17.

[0033] In the above structure, the start of the drive motor 7 causes the drive motor 7 to drive the belt drive shaft 10 to rotate, which in turn causes the belt drive shaft 10 to drive the external sprocket 13 to rotate, which in turn causes the belt drive shaft 10 to drive the chain 17 to rotate, which in turn causes the chain 17 to drive the external sprocket 13 of the flattening roller 12 to rotate, thus causing the flattening roller 12 to rotate.

[0034] In a preferred embodiment: the reactor body 201 is located above the first weighing unit 6, and the first weighing unit 6 is electrically connected to the control center 22.

[0035] In the above structure, the reactor body 201 is located above the first weighing unit 6, so that the first weighing unit 6 can weigh the reactor assembly 2 as a whole, and record the weight of the liquid entering the reactor assembly 2. At the same time, through the electrical connection between the first weighing unit 6 and the control center 22, the first weighing unit 6 sends the weight result to the control center 22, and then the control center 22 calculates the required solution weight.

[0036] In a preferred embodiment: the storage tank body 501 is located above the second weighing unit 15, and the storage tank body 501 and the servo motor 506 are electrically connected to the control center 22.

[0037] In the above structure, the storage tank body 501 is located above the second weighing unit 15, so that the second weighing unit 15 can monitor the weight inside the storage tank body 501 in real time. At the same time, the monitoring data is sent to the control center 22 in real time through the electrical connection between the storage tank body 501 and the control center 22. Furthermore, the control center 22 can start the servo motor 506 at any time through the electrical connection between the control center 22 and the servo motor 506.

[0038] In a preferred embodiment, the top of the scraper 18 is in contact with the surface of the perforated conveyor belt 11, and the scraper 18 is positioned above the collection box 14.

[0039] In the above structure, when the belt drive shaft 10 rotates, the perforated conveyor belt 11 rotates. At the same time, the scraper 18 adheres to the surface of the perforated conveyor belt 11, so that the material attached to the surface of the perforated conveyor belt 11 is scraped off by the scraper 18. Then, because the scraper 18 is above the collection box 14, the scraped material naturally falls into the inside of the collection box 14.

[0040] Working principle: When using the equipment, etching waste liquid is added to the inside of the reactor body 201, and solution is added to the inside of the storage tank body 501. At this time, the weight of the material inside the reactor body 201 is sent to the control center 22 through the first weighing unit 6. Simultaneously, the piston plate 502 is sealed with the sealing plug 503, opening the storage tank body 501. At the same time, the control center 22 sends an electrical signal to the servo motor 506, which in turn drives the stud 507 to rotate. This causes the stud 507 to move through the threaded connection with the threaded sleeve 508, thus... The threaded sleeve 508 drives the piston plate 502 to move downwards, causing the piston plate 502 to squeeze the solution inside the storage tank body 501, which then flows into the reactor body 201 through the conveying pipe 511. Simultaneously, the control center 22 monitors the weight inside the storage tank body 501 via the second weighing unit 15. When the weight of the material inside the storage tank body 501 reaches a threshold, the control center 22 sends an electrical signal to the servo motor 506, causing the servo motor 506 to shut down. This prevents the solution inside the storage tank body 501 from flowing into the reactor body 201, completing the mixing process. Simultaneously, the solution and etching waste liquid are stirred and mixed by the stirring motor 202 and stirring shaft 203. After mixing, the mixture is allowed to stand for reaction. After the reaction is complete, the discharge valve 204 is opened, allowing the material inside the reactor body 201 to be discharged downwards. The material falls onto the perforated conveyor belt 11, where it is filtered, leaving basic copper chloride on top of the conveyor belt 11. At the same time, the water pump 8 is started to extract the liquid from the water storage tank 9. Then, the drive motor 7 is started, causing it to drive the perforated conveyor belt 11 via the belt drive shaft 10. The material is moved by the rotation of the belt drive shaft 10, which in turn drives the chain 17 to rotate. The chain 17 then drives the sprocket 13 outside the flattening roller 12 to rotate, causing the flattening roller 12 to rotate. As the material passes through the flattening roller 12, it is spread out by the flattening roller 12. At the same time, the material reaches the bottom of the hot air blower 3, and the hot air blower 3 dries the material. After drying, the drive motor 7 starts, causing the perforated conveyor belt 11 to continue rotating, causing the material to fall into the collection box 14. At the same time, the scraper 18 scrapes off the material adhering to the surface of the perforated conveyor belt 11.

[0041] 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.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. An apparatus for recycling circuit board etching waste liquid to produce basic copper chloride, comprising a support box (1), characterized in that: The top of the support box (1) is provided with a reactor assembly (2). A hot air blower (3), a support frame (4) and a first weighing unit (6) are respectively installed on the top of the support box (1). A storage tank assembly (5) is provided on the top of the support frame (4). A drive motor (7) is installed on the outer wall of the support box (1). A water pump (8) is installed on the bottom of the support box (1). A water storage tank (9) is opened on the inner wall of the support box (1). A perforated conveyor belt (11) is installed on the output shaft of the drive motor (7). A leveling roller (12) is rotatably connected to the inner wall of the support box (1). A leveling roller (12) is installed on the outer wall of the leveling roller (12). The sprocket (13), the inner wall of the support box (1) is slidably connected to the collection box (14), the top of the support frame (4) is equipped with a second weighing unit (15), the inner wall of the support box (1) is equipped with a fixing plate (16), the outer wall of the sprocket (13) is rotatably sleeved with a chain (17), the outer wall of the fixing plate (16) is provided with a scraper (18), the inner wall of the scraper (18) is rotatably connected with a bolt (19), the outer wall of the support box (1) is rotatably connected with a locking plate (21), the outer wall of the collection box (14) is equipped with a locking groove (20), and the outer wall of the support box (1) is equipped with a control center (22).

2. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 1, characterized in that: The reactor assembly (2) includes a reactor body (201), a stirring motor (202) is installed on the top of the reactor body (201), a stirring shaft (203) is installed on the output shaft of the stirring motor (202), a discharge valve (204) is installed on the bottom of the reactor body (201), a nozzle (205) is installed on the inner wall of the reactor body (201), and a feed pipe (206) is installed on the top of the reactor body (201).

3. The apparatus for recycling circuit board etching waste liquid to produce basic copper chloride according to claim 1, characterized in that: The storage tank assembly (5) includes a storage tank body (501), a piston plate (502) is slidably connected to the inner wall of the storage tank body (501), a sealing plug (503) is threadedly connected to the inner wall of the piston plate (502), an extension frame (504) is installed on the outer wall of the storage tank body (501), a horizontal plate (505) is installed on the top of the extension frame (504), a servo motor (506) is installed on the top of the horizontal plate (505), a stud (507) is installed on the output shaft of the servo motor (506), a threaded sleeve (508) and a limiting rod (509) are respectively installed on the top of the piston plate (502), a solenoid valve (510) is installed at the bottom of the storage tank body (501), and a material conveying pipe (511) is installed at the bottom of the solenoid valve (510).

4. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 2, characterized in that: The number of nozzles (205) is four, and the four nozzles (205) are arranged in a circumferential array on the inner wall of the reactor body (201).

5. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 3, characterized in that: The stud (507) is located on the inner wall of the threaded sleeve (508), and the stud (507) and the threaded sleeve (508) are connected by threads.

6. The apparatus for recycling circuit board etching waste liquid to produce basic copper chloride according to claim 3, characterized in that: The outer wall of the piston plate (502) is in contact with the inner wall of the storage tank body (501), and the limiting rod (509) passes through the horizontal plate (505).

7. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 1, characterized in that: There are two sprockets (13), and the two sprockets (13) are located outside the belt drive shaft (10) and the flattening roller (12), respectively, and the two sprockets (13) are located inside the chain (17).

8. The apparatus for recycling circuit board etching waste liquid to produce basic copper chloride according to claim 2, characterized in that: The reactor body (201) is located above the first weighing unit (6), and the first weighing unit (6) is electrically connected to the control center (22).

9. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 3, characterized in that: The storage tank body (501) is located above the second weighing unit (15), and the storage tank body (501) and the servo motor (506) are electrically connected to the control center (22).

10. The apparatus for recovering circuit board etching waste liquid to produce basic copper chloride according to claim 1, characterized in that: The top of the scraper (18) is in contact with the surface of the perforated conveyor belt (11), and the scraper (18) is located above the collection box (14).

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