A device for recovering and reusing after water washing of a circuit board after tin removal

Abstract

This invention relates to the field of tin stripping water washing and recycling technology, specifically to a device for recycling and reusing tin stripping water after circuit board manufacturing. The device includes a machine body, within which a filter cartridge is rotatably connected via a bracket. Multiple filtration sections are equidistantly arranged on the circumferential sidewalls of the filter cartridge. A filter plate is fixedly connected to the inner wall of the machine body. A discharge pipe is connected to the bottom surface of the filter cartridge via a rotary joint. This invention, through the inclusion of a liquid level detection component and a rotation speed adaptive component, can adaptively adjust the filter cartridge rotation speed according to the liquid level of the wastewater to be treated. Through the inclusion of a filtration area adjustment component, the filtration area of ​​the filter cartridge can be flexibly adjusted according to the liquid level of the wastewater to be treated. Through the inclusion of a tapping component, impurities adhering to the filter cartridge can be promptly shaken off. Through the inclusion of a filtration detection component, real-time monitoring and effective control of the quality of the discharged liquid can be achieved.

Description

Technical Field

[0001] This invention relates to the field of desoldering water washing recycling and reuse technology, specifically to a device for recycling and reuse of desoldered circuit boards after desoldering. Background Technology

[0002] In today's era of rapid digital and intelligent development, the electronics manufacturing industry has become an important pillar industry of global economic development. As a core component of electronic products, circuit boards are widely used in many fields such as communication equipment, computers, automotive electronics, and aerospace. During the production or repair of circuit boards, desoldering is often required. The water washing process after desoldering generates a large amount of wastewater containing metal ions such as tin and other impurities. If this wastewater is discharged directly, it will first cause serious water pollution. The heavy metal ions in the water will accumulate in the water body, destroy the aquatic ecological balance, threaten the survival of aquatic organisms, and also pollute the soil. In turn, it will affect human health through the food chain, forming a chain reaction of heavy metal pollution. With increasingly stringent environmental protection requirements, water pollution and heavy metal pollution have become key factors restricting the sustainable development of the electronics manufacturing industry.

[0003] Existing circuit board desoldering and recycling equipment mostly uses traditional methods such as filtration and sedimentation. Although traditional filtration and sedimentation equipment is simple in structure and low in cost, it suffers from low filtration efficiency and long processing cycles. In addition, existing treatment devices generally lack intelligent adjustment functions and cannot dynamically adjust the working mode according to parameters such as wastewater volume and the concentration of impurities after filtration. When faced with different batches and different levels of pollution of washing wastewater, it often results in low treatment efficiency and excessive energy consumption. Therefore, corresponding solutions are needed. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a device for recycling and reusing water after tin stripping of circuit boards. This device effectively solves the problems of low recycling efficiency, poor filtration effect, and inability to adaptively adjust the working state of wastewater after tin stripping of circuit boards in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a device for the water washing and recycling of circuit boards after desoldering, comprising a machine body, a filter cylinder rotatably connected to the machine body via a bracket, multiple filter sections equally spaced on the circumferential sidewall of the filter cylinder, a filter plate fixedly connected to the inner wall of the machine body, a discharge pipe connected to the bottom surface of the filter cylinder via a rotary joint, the output end of the discharge pipe penetrating through the sidewall of the machine body, a liquid outlet pipe fixedly connected to the bottom surface of the machine body, and a feed pipe provided above the filter cylinder, the feed pipe penetrating through the upper surface of the machine body; The recycling mechanism includes a liquid level detection component, a rotation speed adaptive component, multiple filter area adjustment components, multiple tapping components, and a filter detection component. The liquid level detection component includes an inlet pipe disposed inside the filter cartridge, which penetrates the upper surface of the machine body. A liquid level measuring plate is circumferentially slidably sleeved on the inlet pipe. An air cylinder is fixedly connected to the upper surface of the machine body. A piston plate is slidably and sealed inside the air cylinder. A connecting rod is fixedly connected to the bottom surface of the piston plate. The connecting rod penetrates the inner top surface of the machine body. The bottom end of the connecting rod is fixedly connected to the upper surface of the liquid level measuring plate. An air outlet pipe is fixedly connected to the upper surface of the air cylinder.

[0006] According to the above-mentioned circuit board desoldering and recycling device, the speed adaptive component includes a mounting plate fixedly connected to the side wall of the machine body. A No. 1 motor is fixedly connected to the bottom surface of the mounting plate through a bracket. A No. 1 rotating shaft is fixedly connected to the output end of the No. 1 motor. The No. 1 rotating shaft is rotatably connected to the upper surface of the mounting plate through a bearing. A drive wheel is fixedly connected to the top end of the No. 1 rotating shaft. A cavity is provided inside the drive wheel. Multiple cylindrical through slots are provided at equal intervals on the inner wall of the cavity. A No. 2 piston plate is slidably connected to each of the multiple cylindrical through slots. A No. 2 connecting rod is fixedly connected to the side wall of each of the multiple No. 2 piston plates. An arc-shaped transmission plate is fixedly connected to the end of each of the multiple No. 2 connecting rods away from the cavity. The output end of the air outlet pipe is connected to the cavity through a rotary joint. A driven wheel is fixedly connected to the circumference of the filter cartridge. An elastic belt is sleeved between the drive wheel and the driven wheel. A strip groove is provided on the side wall of the machine body. The elastic belt passes through the strip groove.

[0007] According to the above-mentioned circuit board desoldering and recycling device, the filter area adjustment component includes two No. 1 guide rods fixedly connected to the side wall of the filter cartridge. The lower end face of each of the two No. 1 guide rods is fixedly connected to a No. 2 guide rod. A No. 1 moving block is slidably sleeved on the two No. 1 guide rods. A No. 2 moving block is slidably sleeved on the two No. 2 guide rods. An arc-shaped baffle is fixedly connected to the side wall of the No. 2 moving block. Two No. 3 connecting rods are hinged to the bottom surface of the No. 1 moving block. The bottom ends of the two No. 3 connecting rods are hinged to the side wall of the No. 2 moving block.

[0008] According to the above-mentioned circuit board desoldering and recycling device, the striking assembly includes a fixed plate fixedly connected to the side wall of the filter cartridge. A housing is fixedly connected to the bottom surface of the fixed plate. A second rotating shaft is rotatably connected to the bottom surface of the fixed plate via a bearing. A spring is fixedly connected between the side wall of the second rotating shaft and the inner wall of the housing. A rope is wound around the second rotating shaft. The other end of the rope is fixedly connected to the side wall of a first moving block. A cam is fixedly connected to the bottom end of the second rotating shaft. Two third guide rods are fixedly connected to the side wall of the filter cartridge. A third moving block is slidably sleeved on the third guide rod. Two return springs are fixedly connected between the side wall of the third moving block and the side wall of the filter cartridge. A striking block is fixedly connected to the side wall of the third moving block near the filter cartridge via a bracket.

[0009] According to the above-mentioned circuit board desoldering and recycling device, the filtration and detection assembly includes a turbidity sensor fixedly installed on the inner wall of the outlet pipe, a PLC controller fixedly installed on the side wall of the machine body, a second motor fixedly connected to the side wall of the outlet pipe via a bracket, a partition fixedly connected to the inner wall of the outlet pipe, a plurality of first and second through slots opened on the upper surface of the partition, the plurality of first and second through slots being equally spaced, a third rotating shaft provided in the outlet pipe, the third rotating shaft being rotatably connected to the upper surface of the partition via a bearing, a fourth rotating shaft fixedly connected to the output end of the second motor, the fourth rotating shaft being connected to the third rotating shaft via a bevel gear set, a spiral plate fixedly connected circumferentially to the third rotating shaft, and a second filter plate fixedly connected to the inner wall of each of the plurality of first through slots.

[0010] According to the above-mentioned circuit board desoldering and recycling device, multiple arc-shaped transmission plates cooperate with each other, and the elastic belt is sleeved on the outside of the multiple arc-shaped transmission plates.

[0011] According to the above-mentioned circuit board desoldering and recycling device, multiple filter area adjustment components and knocking components are equidistantly arranged around the filter cylinder, multiple reset springs are respectively sleeved on multiple No. 3 guide rods, the inner side wall of the arc-shaped baffle is in contact with the outer side wall of the filter cylinder, and the bottom surface of the spiral plate is in contact with the upper surface of the partition.

[0012] According to the above-mentioned circuit board desoldering and recycling device, the PLC controller is electrically connected to the No. 2 motor and the turbidity sensor, and the circuit formed by the PLC controller, the No. 2 motor and the turbidity sensor is electrically connected to an external power supply.

[0013] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. This invention, through the setting of a liquid level detection component and a speed adaptive component, can achieve adaptive adjustment of the filter cartridge speed according to the liquid level of the wastewater to be treated. The liquid level detection component, through the liquid level measuring plate rising with the wastewater level, drives the first piston plate to move in the air cylinder, squeezing out the gas and transmitting it to the speed adaptive component. In the speed adaptive component, the gas pushes the second piston plate, causing the arc-shaped transmission plate to extend outward, changing the contact radius between the drive wheel and the elastic belt, thereby achieving adaptive adjustment of the filter cartridge speed. When the liquid level in the filter cartridge is high, that is, when the wastewater treatment volume is large, the gas pressure is high, the arc-shaped transmission plate extends a long length, and the filter cartridge rotates quickly, which can process more wastewater per unit time. When the liquid level is low, the filter cartridge speed is reduced accordingly, avoiding unnecessary energy consumption and reducing operating costs.

[0014] 2. This invention, through its filtration area adjustment component, can flexibly adjust the area of ​​the filter cartridge involved in filtration according to the liquid level of the wastewater to be treated, thereby matching the filtration area with the volume of wastewater to be filtered, which is beneficial to improving the filtration effect. By sliding the first and second moving blocks on the guide rod, the arc-shaped baffle is moved, thereby flexibly adjusting the area of ​​the filter cartridge involved in filtration. The higher the wastewater level, the greater the rotation speed of the filter cartridge, and the farther the sliding distance of the first and second moving blocks, the larger the effective filtration area. This ensures that the effective filtration area is always matched with the wastewater level, and also avoids excessive turbulence during filtration of wastewater with low liquid levels, thus ensuring efficient wastewater filtration.

[0015] 3. The present invention, through the set knocking component, can promptly shake off impurities attached to the filter cartridge, thereby keeping the filter cartridge unobstructed and ensuring a continuous and stable filtration process without frequent manual intervention. When the first moving block moves, it pulls the rope to rotate the second rotating shaft. The rotation of the second rotating shaft causes the cam to rotate accordingly. When the cam rotates, it drives the third moving block to move back and forth. The movement of the third moving block drives the knocking block to move, so that the knocking block, in cooperation with the return spring, knocks on the filter cartridge, thereby achieving the function of cleaning the filter cartridge.

[0016] 4. This invention, through its filter detection components, enables real-time monitoring and effective control of the quality of discharged liquid. The turbidity sensor detects the turbidity of the liquid in the pipe in real time and transmits the data to the PLC controller. When the detected turbidity exceeds the set value, the PLC controller controls the second motor to start, which drives the third shaft to rotate through the bevel gear set. The spiral plate guides the liquid to different filter channels, allowing the liquid to pass through more second filter plates for further filtration. This closed-loop control mechanism ensures the quality of the discharged liquid and also enables the full recovery of tin. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional diagram of the present invention; Figure 3 This is a three-dimensional structural cross-sectional diagram from another perspective of the present invention; Figure 4 This is a three-dimensional structural cross-sectional diagram of the speed adaptive component of the present invention; Figure 5 for Figure 3 Enlarged view of point A in the middle; Figure 6 for Figure 3 Enlarged view of point B in the middle; Figure 7 for Figure 3 Enlarged view of point C in the middle; Figure 8 for Figure 4 Enlarged view of point D in the middle.

[0019] Reference numerals: 1. Machine body; 11. Filter cartridge; 12. Filter section; 13. Filter plate No. 1; 14. Discharge pipe; 15. Liquid outlet pipe; 16. Feed pipe; 2. Liquid level detection assembly; 21. Liquid inlet pipe; 22. Liquid level measuring plate; 23. Air cylinder; 24. Piston plate No. 1; 25. Connecting rod No. 1; 26. Air outlet pipe; 3. Speed ​​adaptive assembly; 31. Mounting plate; 32. Motor No. 1; 33. Shaft No. 1; 34. Drive wheel; 35. Cavity; 36. Cylindrical through groove; 37. Piston plate No. 2; 38. Connecting rod No. 2; 39. Arc-shaped transmission plate 310. Driven wheel; 311. Elastic belt; 4. Filter area adjustment assembly; 41. Guide rod No. 1; 42. Guide rod No. 2; 43. Moving block No. 1; 44. Moving block No. 2; 45. Arc-shaped baffle; 46. Connecting rod No. 3; 5. Striking assembly; 51. Fixing plate; 52. Housing; 53. Rotating shaft No. 2; 54. Spring-loaded spring; 55. Rope; 56. Cam; 57. Guide rod No. 3; 58. Moving block No. 3; 59. Return spring; 510. Striking block; 6. Filter detection assembly; 61. Turbidity sensor; 62. PLC controller; 63. Motor No. 2; 64. Partition; 65. Through slot No. 1; 66. Through slot No. 2; 67. Rotating shaft No. 3; 68. Rotating shaft No. 4; 69. Spiral plate; 610. Filter plate No. 2. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Example: Refer to Figures 1 to 8 A circuit board desoldering and recycling device includes a body 1. A filter cylinder 11 is rotatably connected to the body 1 via a bracket. Multiple filter sections 12 are equidistantly arranged on the circumferential sidewall of the filter cylinder 11. A filter plate 13 is fixedly connected to the inner wall of the body 1. The bottom surface of the filter cylinder 11 is connected to a discharge pipe 14 via a rotary joint. The output end of the discharge pipe 14 penetrates the sidewall of the body 1. A valve is provided at the input end of the discharge pipe 14 to control the opening and closing of the discharge pipe 14. A liquid outlet pipe 15 is fixedly connected to the bottom surface of the body 1. An inlet pipe 16 is provided above the filter cylinder 11 and penetrates the upper surface of the body 1. The discharge pipe 14 is used to discharge the sediment and waste material that has been filtered in the filter cylinder 11. The recycling mechanism includes a liquid level detection component 2, a speed adaptive component 3, multiple filter area adjustment components 4, multiple tapping components 5, and a filter detection component 6. The liquid level detection component 2 includes an inlet pipe 21 located inside the filter cartridge 11. The inlet pipe 21 penetrates the upper surface of the body 1. A liquid level measuring plate 22 is circumferentially slidably sleeved on the inlet pipe 21. An air cylinder 23 is fixedly connected to the upper surface of the body 1. A piston plate 24 is slidably sealed inside the air cylinder 23. A connecting rod 25 is fixedly connected to the bottom surface of the piston plate 24. The connecting rod 25 penetrates the inner top surface of the body 1. The bottom end of the connecting rod 25 is fixedly connected to the upper surface of the liquid level measuring plate 22. An air outlet pipe 26 is fixedly connected to the upper surface of the air cylinder 23. The speed adaptive component 3 includes a mounting plate 31 fixedly connected to the side wall of the machine body 1. A first motor 32 is fixedly connected to the bottom surface of the mounting plate 31 via a bracket. A first rotating shaft 33 is fixedly connected to the output end of the first motor 32. The first rotating shaft 33 is rotatably connected to the upper surface of the mounting plate 31 via bearings. A drive wheel 34 is fixedly connected to the top end of the first rotating shaft 33. A cavity 35 is provided inside the drive wheel 34. Multiple cylindrical through slots 36 are equidistantly arranged on the inner wall of the cavity 35. Second piston plates 37 are slidably connected and sealed within each of the multiple cylindrical through slots 36. The side walls of the second piston plate 37 are all fixedly connected to the second connecting rod 38. The ends of the multiple second connecting rods 38 away from the cavity 35 are all fixedly connected to the arc-shaped transmission plate 39. The output end of the air outlet pipe 26 is connected to the cavity 35 through a rotary joint. The filter cartridge 11 is circumferentially fixedly connected to the driven wheel 310. An elastic belt 311 is sleeved between the driving wheel 34 and the driven wheel 310. The side wall of the machine body 1 is provided with a strip groove. The elastic belt 311 passes through the strip groove. Multiple arc-shaped transmission plates 39 cooperate with each other. The elastic belt 311 is sleeved on the outside of the multiple arc-shaped transmission plates 39. The filter area adjustment assembly 4 includes two guide rods 41 fixedly connected to the side wall of the filter cartridge 11. A guide rod 42 is fixedly connected to the lower end face of each guide rod 41. A moving block 43 is slidably sleeved on the two guide rods 41. A moving block 44 is slidably sleeved on the two guide rods 42. An arc-shaped baffle 45 is fixedly connected to the side wall of the moving block 44. Two connecting rods 46 are hinged to the bottom surface of the moving block 43. The bottom ends of the two connecting rods 46 are hinged to the side wall of the moving block 44. The inner side wall of the arc-shaped baffle 45 is in contact with the outer side wall of the filter cartridge 11. The effective filter area of ​​the filter section 12 is controlled by the rising distance of the arc-shaped baffle 45. Multiple arc-shaped baffles 45 are respectively provided on the outer side walls of multiple filter sections 12 and correspond to multiple filter sections 12 respectively. The striking assembly 5 includes a fixing plate 51 fixedly connected to the side wall of the filter cartridge 11. A housing 52 is fixedly connected to the bottom surface of the fixing plate 51. A second rotating shaft 53 is rotatably connected to the bottom surface of the fixing plate 51 via a bearing. A spring-loaded spring 54 is fixedly connected between the side wall of the second rotating shaft 53 and the inner wall of the housing 52. A rope 55 is wound around the second rotating shaft 53. The other end of the rope 55 is fixedly connected to the side wall of the first moving block 43. A cam 56 is fixedly connected to the bottom end of the second rotating shaft 53. Two guide rods 57 are fixedly connected to the side wall of the filter cartridge 11. A moving block 58 is slidably sleeved on the guide rod 57. Two return springs 59 are fixedly connected between the side wall of the moving block 58 and the side wall of the filter cartridge 11. A striking block 510 is fixedly connected to the side wall of the moving block 58 near the filter cartridge 11 through a bracket. Multiple filter area adjustment components 4 and striking components 5 are equidistantly arranged around the filter cartridge 11. Multiple return springs 59 are respectively sleeved on multiple guide rods 57. The filtration detection assembly 6 includes a turbidity sensor 61 fixedly mounted on the inner wall of the outlet pipe 15. A PLC controller 62 is fixedly mounted on the side wall of the body 1. A second motor 63 is fixedly connected to the side wall of the outlet pipe 15 via a bracket. A partition 64 is fixedly connected to the inner wall of the outlet pipe 15. Multiple first-pass grooves 65 and second-pass grooves 66 are formed on the upper surface of the partition 64. The multiple first-pass grooves 65 and second-pass grooves 66 are equally spaced. A third rotating shaft 67 is provided inside the outlet pipe 15. The third rotating shaft 67 is rotatably connected to the upper surface of the partition 64 through a bearing. The output end of motor 63 is fixedly connected to shaft 68. Shaft 68 and shaft 67 are connected by bevel gear transmission. Spiral plate 69 is fixedly connected to shaft 67 in the circumferential direction. Filter plates 610 are fixedly connected to the inner walls of multiple first-pass grooves 65. The bottom surface of spiral plate 69 is in contact with the upper surface of partition plate 64. PLC controller 62 is electrically connected to motor 63 and turbidity sensor 61. The circuit formed by PLC controller 62, motor 63 and turbidity sensor 61 is electrically connected to an external power supply.

[0023] The working principle of this invention is as follows: In use, the wastewater from the desoldering of the circuit board is first introduced into the filter cartridge 11 inside the machine body 1 through the liquid inlet pipe 21. The feed pipe 16 is used to add flocculants and other treatment agents. In the initial state, multiple arc-shaped baffles 45 are tightly attached to the outer wall of the filter cartridge 11, blocking the wastewater from directly passing through the filtration section 12 of the filter cartridge 11. At this time, the area around the filter cartridge 11 is blocked and no filtration occurs. When the flocculant is added to the wastewater, it will cause tin ions and tiny tin particles to agglomerate and form larger particles. The flocculant reacts chemically with the tin ions, reducing their solubility in water and accelerating the sedimentation process. After sedimentation is completed, the first motor 32 is started. The first motor 32 drives the first rotating shaft 33 to rotate. The drive wheel 34 at the top of the first rotating shaft 33 rotates accordingly. The drive wheel 34 drives the driven wheel 310 through the elastic belt 311, thereby causing the filter cartridge 11 to start rotating. Centrifugal force is used to filter the wastewater inside the filter cartridge 11. Before centrifugal filtration, as wastewater continuously enters the filter cartridge 11, the liquid level inside the filter cartridge 11 also rises continuously. As the liquid level rises, the liquid level measuring plate 22 drives the first piston plate 24 to slide upward inside the air cylinder 23. The gas inside the air cylinder 23 is discharged through the air outlet pipe 26 and enters the cavity 35 of the drive wheel 34, pushing the second piston plate 37 and the arc-shaped transmission plate 39 to move, changing the contact radius between the drive wheel 34 and the elastic belt 311. This adaptively adjusts the rotation speed of the filter cartridge 11 according to the liquid level height. The change in the rotation speed of the filter cartridge 11 changes the magnitude of the centrifugal force acting on the first moving block 43. At the same time, the liquid level height also affects the amount of gas discharged from the air cylinder 23, thus indirectly affecting the rotation speed of the filter cartridge 11. The two work together to match the adjustment of the rotation speed and effective filtration area of ​​the filter cartridge 11 with the wastewater treatment volume and treatment requirements, ensuring that the filtration effect reaches the best. During the rotation of the filter cartridge 11, centrifugal force acts on the first moving block 43, causing it to overcome initial resistance and begin to move on the first guide rod 41. The movement of the first moving block 43 drives the second moving block 44 to move on the second guide rod 42 via the third connecting rod 46, thereby causing the arc-shaped baffle 45 to rise and gradually expose the filtration section 12 of the filter cartridge 11. The higher the liquid level inside the filter cartridge 11, the greater the rotational speed of the filter cartridge 11, the greater the centrifugal force on the first moving block 43, and the farther it moves. This results in the second moving block 44 and the arc-shaped baffle 45 rising to a higher height, thus increasing the effective filtration area of ​​the filter cartridge 11. Conversely, when the liquid level is lower, the effective filtration area of ​​the filter cartridge 11 will decrease. It should be noted that the liquid level measuring plate 22 is at a certain initial height from the bottom surface of the filter cartridge 11. Even if the liquid level of the wastewater to be treated in the filter cartridge 11 is too low, the circumferential sidewall of the filter cartridge 11 will still expose a certain effective filtration area during operation, thereby ensuring the filtration effect. By adjusting the effective filtration area according to the liquid level to be treated, the filtration efficiency can be improved, and the excessive turbulence of the waste liquid inside the filter cartridge 11 can be effectively avoided. With the cooperation of the liquid level measuring plate 22, the centrifugal filtration operation can be carried out more stably and efficiently. Furthermore, the flocculation and sedimentation treatment and filtration of wastewater are completed through different steps of one device, eliminating the waste liquid transmission process. Compared with traditional filtration methods, it also has higher filtration efficiency. During the movement of the first moving block 43, it drives the rope 55 to rotate the second rotating shaft 53. The movement of the first moving block 43 causes the rope 55 to rewind or unwind on the second rotating shaft 53. When the first moving block 43 moves towards the second rotating shaft 53, under the action of the spring 54, the rope 55 will rewind onto the second rotating shaft 53, causing the second rotating shaft 53 to rotate. At this time, it is the filtration stage of the filter cartridge 11. When the second rotating shaft 53 rotates, it drives the cam 56 to rotate. The rotation of the cam 56 pushes the third moving block 58 to slide back and forth on the third guide rod 57. When the third moving block 58 slides back and forth, it will be reset by the return spring 59. The striking block 510 is driven to strike the filter cartridge 11, cleaning the impurities attached to the filter section 12 of the filter cartridge 11 and preventing clogging. When the filter cartridge 11 completes the filtration operation, the first motor 32 is turned off, and the first moving block 43 loses centrifugal force and moves away from the second rotating shaft 53. The rope 55 will be unwound from the second rotating shaft 53. At this time, the second rotating shaft 53 will rotate in the opposite direction. The rotation of the second rotating shaft 53 will still drive the cam 56 to rotate, thereby making the striking block 510 work and strike the side wall of the filter cartridge 11. This causes the sediment and impurities that adhered to the inner wall of the filter cartridge 11 due to centrifugal force during filtration to detach from the inner wall, achieving a cleaning effect. When the filter cartridge 11 rotates, it can efficiently filter the waste liquid inside. Centrifugal force enables rapid separation of sediment and liquid. The separated waste liquid will first pass through the first filter plate 13 for further staged filtration, and then be discharged from the machine body 1 through the outlet pipe 15. The turbidity sensor 61 in the outlet pipe 15 will detect the turbidity of the discharged liquid in real time and transmit the signal to the PLC controller 62. When the detected turbidity exceeds the set threshold, the PLC controller 62 controls the second motor 63 to start, which drives the third motor through the bevel gear set. As shaft 67 and spiral plate 69 rotate, spiral plate 69 guides the liquid to different filtration channels. When the impurity content in the liquid is still high, spiral plate 69 exposes multiple No. 1 channels 65, allowing the liquid to pass through more No. 2 filter plates 610 for further filtration. If the impurity content in the liquid is low and meets the requirements for the next discharge step, spiral plate 69 exposes multiple No. 2 channels 66, allowing the liquid to be directly discharged from the machine body 1 through the liquid outlet pipe 15. This closed-loop control mechanism can ensure the quality of the discharged liquid and also achieve full recovery of tin.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for water washing and recycling circuit boards after desoldering, characterized in that, include: The machine body (1) has a filter cylinder (11) rotatably connected to the machine body (1) via a bracket. The filter cylinder (11) has multiple filter sections (12) equidistantly arranged on its circumferential sidewall. The inner wall of the machine body (1) is fixedly connected to a filter plate (13). The bottom surface of the filter cylinder (11) is connected to a discharge pipe (14) via a rotary joint. The output end of the discharge pipe (14) penetrates the sidewall of the machine body (1). The bottom surface of the machine body (1) is fixedly connected to a liquid outlet pipe (15). The filter cylinder (11) is provided with a feed pipe (16) above it. The feed pipe (16) penetrates the upper surface of the machine body (1). The recycling mechanism includes a liquid level detection component (2), a speed adaptive component (3), multiple filter area adjustment components (4), multiple tapping components (5), and a filter detection component (6). The liquid level detection component (2) includes an inlet pipe (21) located inside the filter cartridge (11). The inlet pipe (21) penetrates the upper surface of the body (1). A liquid level measuring plate (22) is circumferentially slidably sleeved on the inlet pipe (21). An air cylinder (23) is fixedly connected to the upper surface of the body (1). A piston plate (24) is slidably sealed inside the air cylinder (23). A connecting rod (25) is fixedly connected to the bottom surface of the piston plate (24). The connecting rod (25) penetrates the inner top surface of the body (1). The bottom end of the connecting rod (25) is fixedly connected to the upper surface of the liquid level measuring plate (22). An outlet pipe (26) is fixedly connected to the upper surface of the air cylinder (23).

2. The circuit board desoldering and recycling device according to claim 1, characterized in that, The speed adaptive component (3) includes a mounting plate (31) fixedly connected to the side wall of the body (1). A No. 1 motor (32) is fixedly connected to the bottom surface of the mounting plate (31) via a bracket. A No. 1 rotating shaft (33) is fixedly connected to the output end of the No. 1 motor (32). The No. 1 rotating shaft (33) is rotatably connected to the upper surface of the mounting plate (31) via a bearing. A drive wheel (34) is fixedly connected to the top end of the No. 1 rotating shaft (33). A cavity (35) is provided inside the drive wheel (34). A plurality of cylindrical through slots (36) are provided at equal intervals on the inner wall of the cavity (35). The plurality of cylindrical through slots (36) The filter cartridge (11) is sealed and slidably connected with a second piston plate (37). The side walls of the multiple second piston plates (37) are fixedly connected with a second connecting rod (38). The ends of the multiple second connecting rods (38) away from the cavity (35) are fixedly connected with an arc-shaped transmission plate (39). The output end of the air outlet pipe (26) is connected to the cavity (35) through a rotary joint. The filter cartridge (11) is circumferentially fixedly connected with a driven wheel (310). An elastic belt (311) is sleeved between the driving wheel (34) and the driven wheel (310). The side wall of the machine body (1) is provided with a strip groove. The elastic belt (311) passes through the strip groove.

3. The circuit board desoldering and recycling device according to claim 1, characterized in that, The filter area adjustment assembly (4) includes two first guide rods (41) fixedly connected to the side wall of the filter cartridge (11). The lower end face of each of the two first guide rods (41) is fixedly connected to a second guide rod (42). A first moving block (43) is slidably sleeved on the two first guide rods (41). A second moving block (44) is slidably sleeved on the two second guide rods (42). An arc-shaped baffle (45) is fixedly connected to the side wall of the second moving block (44). Two third connecting rods (46) are hinged to the bottom surface of the first moving block (43). The bottom ends of the two third connecting rods (46) are hinged to the side wall of the second moving block (44).

4. The circuit board desoldering and recycling device according to claim 3, characterized in that, The striking assembly (5) includes a fixed plate (51) fixedly connected to the side wall of the filter cartridge (11). A housing (52) is fixedly connected to the bottom surface of the fixed plate (51). A second rotating shaft (53) is rotatably connected to the bottom surface of the fixed plate (51) via a bearing. A spring-loaded spring (54) is fixedly connected between the side wall of the second rotating shaft (53) and the inner wall of the housing (52). A rope (55) is wound around the second rotating shaft (53). The other end of the rope (55) is connected to the first moving block (43). The side wall is fixedly connected, and the bottom end of the second rotating shaft (53) is fixedly connected to a cam (56). The side wall of the filter cylinder (11) is fixedly connected to two third guide rods (57). A third moving block (58) is slidably sleeved on the third guide rod (57). Two return springs (59) are fixedly connected between the side wall of the third moving block (58) and the side wall of the filter cylinder (11). A knocking block (510) is fixedly connected to the side wall of the third moving block (58) near the filter cylinder (11) through a bracket.

5. A circuit board desoldering and recycling device according to claim 4, characterized in that, The filtration detection assembly (6) includes a turbidity sensor (61) fixedly mounted on the inner wall of the outlet pipe (15). A PLC controller (62) is fixedly mounted on the side wall of the body (1). A second motor (63) is fixedly connected to the side wall of the outlet pipe (15) via a bracket. A partition (64) is fixedly connected to the inner wall of the outlet pipe (15). A plurality of first-pass grooves (65) and second-pass grooves (66) are opened on the upper surface of the partition (64). The plurality of first-pass grooves (65) and second-pass grooves (66) are connected to each other. The outlet pipe (15) is provided with a No. 3 rotating shaft (67) and the No. 3 rotating shaft (67) is rotatably connected to the upper surface of the partition plate (64) through a bearing. The output end of the No. 2 motor (63) is fixedly connected to the No. 4 rotating shaft (68). The No. 4 rotating shaft (68) and the No. 3 rotating shaft (67) are connected by a bevel gear set. The No. 3 rotating shaft (67) is fixedly connected to a spiral plate (69) in the circumferential direction. The inner walls of the multiple No. 1 through grooves (65) are all fixedly connected to the No. 2 filter plates (610).

6. The circuit board desoldering and recycling device according to claim 2, characterized in that, Multiple arc-shaped transmission plates (39) cooperate with each other, and the elastic belt (311) is sleeved on the outside of the multiple arc-shaped transmission plates (39).

7. The circuit board desoldering and recycling device according to claim 5, characterized in that, Multiple filter area adjustment components (4) and tapping components (5) are equidistantly arranged around the filter cylinder (11). Multiple reset springs (59) are respectively sleeved on multiple guide rods (57). The inner wall of the arc-shaped baffle (45) is in contact with the outer wall of the filter cylinder (11). The bottom surface of the spiral plate (69) is in contact with the upper surface of the partition (64).

8. A circuit board desoldering and recycling device according to claim 5, characterized in that, The PLC controller (62) is electrically connected to the second motor (63) and the turbidity sensor (61), and the circuit formed between the PLC controller (62), the second motor (63) and the turbidity sensor (61) is electrically connected to an external power supply.

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