A device for disassembling waste circuit boards and a method for processing waste circuit boards

Abstract

The present invention provides a device for dismantling waste circuit boards. The device for dismantling waste circuit boards comprises: a metal mesh cylinder, a screen, a tin bucket and a plate baking machine. The metal mesh cylinder is installed inside the plate baking machine, and the screen is arranged below the metal mesh cylinder. The device for dismantling waste circuit boards provided by the present invention has the advantages of using a plate baking machine to bake at low temperature to pre-treat the hazardous waste circuit boards for resource utilization and harmless treatment. The electronic components can be separated from the circuit board during the baking process, so that the bare waste circuit boards can enter the fire project for safe production. The soot, lead and volatile organic compounds generated by baking are fully burned at a high temperature of 1100°C to 1300°C in the secondary combustion chamber of the smoke treatment system of the fire project. Compared with manual dismantling, it greatly reduces environmental pollution and highlights the harmlessness advantage. The smoke after high-temperature combustion treatment is purified by subsequent equipment of the smoke treatment system of the fire project and discharged after meeting environmental protection standards.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board recycling, and in particular to a device for disassembling waste circuit boards and a processing method thereof. Background Art

[0002] With the rapid development of my country's economy and the improvement of the quality of life of the people, electronic products, led by mobile phones, computers, and household electronic appliances, are rapidly updated, and the number of obsolete electronic products and waste circuit boards has also increased rapidly. This has brought about increasingly severe environmental pollution and personal health problems. Printed circuit boards contain many substances that are harmful to human health, among which the solder used to weld electronic components contains lead; polychlorinated biphenyls and brominated flame retardants are present in the substrate. For scrapped printed circuit boards, if they are randomly piled or landfilled, the heavy metals contained may seep into the groundwater, causing potential harm; if the flame retardants containing halogen elements in the circuit board are blindly burned, carcinogens will be produced, which can emit a large amount of harmful waste gas, destroy the ozone layer and form acid rain, which will pose a serious threat to human health and the surrounding environment. If electronic waste and electronic waste cannot be handled reasonably, it will not only pollute the environment and damage health, but also cause a waste of resources. With the strengthening of national environmental protection supervision and the improvement of hazardous waste management systems, it is urgent to dispose of waste circuit boards harmlessly, and we should also actively develop ways to utilize waste circuit boards and turn waste into treasure.

[0003] Scrap circuit boards are generally composed of glass fiber boards or resin fiber boards and electronic components soldered on them. Their thickness is generally 0.15 to 0.35 mm. If the electronic components on the scrap circuit boards are not removed and directly smelted in the pyrometallurgical project, it will not only cause the waste of some valuable recyclable electronic components, but also affect the pyrometallurgical smelting. Therefore, the scrap circuit boards must be pre-treated and the electronic components on them must be removed before entering the pyrometallurgical project smelting.

[0004] At present, the domestic method of dismantling waste circuit boards is relatively simple, that is, manual dismantling. Manual processing has the great disadvantages of small processing volume, high processing cost and air pollution, and poses a great threat to the health of operators. Mechanical dismantling has lower costs, higher recycling rates, and is environmentally friendly than manual dismantling. Most importantly, it does not pose a risk to the health of operators.

[0005] Therefore, it is necessary to provide a device and a method for disassembling waste circuit boards to solve the above technical problems. Summary of the invention

[0006] The invention provides a device for disassembling waste circuit boards, which solves the problem that manual disassembly of waste circuit boards poses a potential safety hazard to human health.

[0007] In order to solve the above technical problems, the present invention provides a device for dismantling waste circuit boards, comprising: a metal mesh cylinder, a screen, a tin bucket and a board baking machine, wherein the metal mesh cylinder is installed inside the board baking machine, the screen is arranged below the metal mesh cylinder, and the tin bucket is arranged below the screen;

[0008] An environmental fume collector, which is installed above the metal mesh cylinder and is used to collect lead, smoke and volatile organic compounds generated by the low-temperature baking plate of the baking machine;

[0009] Secondary combustion chamber, the input end of the secondary combustion chamber is connected to the output end of the environmental flue gas collector through a flue, and is used for connecting to subsequent flue gas treatment equipment for purification treatment in pyrometallurgical projects.

[0010] Preferably, the screen is installed inside the baking sheet machine and is located between the bottom of the metal mesh cylinder and the top of the tin bucket.

[0011] Preferably, both ends of the metal mesh cylinder are rotatably connected to the inner wall of the board baking machine for flipping and baking the waste circuit boards.

[0012] Preferably, a multi-stage sorting machine is further included, wherein only a tin bucket is provided at the bottom of the metal mesh cylinder, and the input end of the multi-stage sorting machine is provided at the output end of the metal mesh cylinder.

[0013] Preferably, a feed box is fixedly connected to one side of the baking machine, and a feed inlet and a feeding port are respectively provided on the feed box;

[0014] The inner wall of the feed box is fixedly connected with a supporting sliding shaft, and the surface of the supporting sliding shaft is slidably connected with a linkage disk, an adjusting groove is opened on the linkage disk, and a first telescopic rod is transmission-connected to the bottom of the linkage disk and the feed box through a rotating member, a rotating disk is provided on one side of the linkage disk, an adjusting motor is fixedly connected with the inner wall of the adjusting groove, a driving gear is fixedly connected with the output end of the adjusting motor, a driven gear is meshed with a driven gear ring, and a collecting rack is fixedly connected to one side of the rotating disk.

[0015] Preferably, a second telescopic rod is fixedly connected to the top of the feed box, and a shielding cover is fixedly connected to the output end of the second telescopic rod. The surface of the shielding cover is arranged above the feed port, and limit blocks are arranged on both sides of the shielding cover, and the inner surface of the limit block is slidably connected to the surface of the shielding cover.

[0016] Preferably, a third telescopic rod is fixedly connected to the outer surface of the baking machine, an output end of the third telescopic rod is fixedly connected to a linkage frame, two sets of sealing cover plates are fixedly connected to the bottom of the linkage frame, and an exhaust pipe is arranged on the top of the baking machine.

[0017] Preferably, the surface of the rotating disk is rotatably connected to the inner surface of the adjusting groove, and the inner surface of the rotating disk is fixedly connected to the outer surface of the driven gear ring.

[0018] Preferably, the bottom end of the limit stopper is fixedly connected to the top of the feed box, and the two limit stops are symmetrically distributed.

[0019] A method for dismantling waste circuit boards, comprising the following steps:

[0020] S1 Add the waste circuit board into the metal mesh cylinder built into the baking machine, the added amount is 50% to 80% of the space capacity of the metal mesh cylinder built into the baking machine, and close the feeding door;

[0021] S2 starts the board baking machine to bake the waste circuit boards inside the metal mesh cylinder at a low temperature, and at the same time, the shaft end of the metal mesh cylinder is connected to a rotating mechanism for flipping and baking;

[0022] S3: The soldering points melt and fall off under the influence of the internal temperature of the baking machine, and the bare waste circuit boards and electronic components are separated during the flipping of the metal mesh cylinder. The tin liquid and tin ash fall through the mesh holes of the metal mesh cylinder built into the baking machine and fall into the tin bucket inside the baking machine for collection.

[0023] During the baking process, the lead, smoke and volatile organic compounds generated by the low-temperature baking plates inside the baking machine are collected by the environmental smoke collector, and the smoke and flue gas are collected into the second combustion chamber through the flue;

[0024] In the secondary combustion chamber of S5, the combustible components, incompletely burned components and volatile organic compounds in the soot are completely burned at a high temperature of 1100℃ to 1300℃ and then enter the subsequent flue gas treatment equipment of the pyrometallurgical project for purification and then discharged in compliance with environmental standards;

[0025] The scrap circuit boards baked in the metal mesh cylinder built into the S6 baking machine are input into the screen or multi-stage sorting machine together with the electronic components, and are picked up in the screen inside the baking machine or sorted by the multi-stage sorting machine. The sorted scrap circuit boards are sent to the pyrometallurgical project for processing, and the electronic components are sent to the cracking workshop for further processing to be made into aluminum ingots for sale.

[0026] Compared with the related art, the device for disassembling waste circuit boards provided by the present invention has the following beneficial effects:

[0027] The present invention provides a device for disassembling waste circuit boards, which adopts a board baking machine to perform low-temperature baking on the hazardous waste circuit boards for pre-treatment, resource utilization and harmless treatment. Electronic components can be separated from the circuit boards during the baking process, so that the bare waste circuit boards can enter the safe production of the pyrometallurgical project. The soot, lead and volatile organic compounds generated by the baking are fully burned out at a high temperature of 1100°C to 1300°C in the secondary combustion chamber of the smoke treatment system of the pyrometallurgical project, which greatly reduces environmental pollution compared with manual disassembly, highlighting the harmless advantage of the present invention. The smoke after high-temperature combustion treatment is purified by subsequent equipment of the smoke treatment system of the pyrometallurgical project, discharged after meeting environmental protection standards, and recycled as a resource. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A system diagram of a first embodiment of a device for disassembling waste circuit boards provided by the present invention;

[0029] Figure 2 A system diagram of a second embodiment of the device for disassembling waste circuit boards provided by the present invention;

[0030] Figure 3 A schematic structural diagram of a third embodiment of the device for disassembling waste circuit boards provided by the present invention;

[0031] Figure 4 for Figure 3 The structural schematic diagram of the feed box part shown;

[0032] Figure 5 for Figure 4 The structural schematic diagram of the linkage disk part is shown.

[0033] Numbers in the figure:

[0034] 1. Metal mesh tube;

[0035] 2. Screen;

[0036] 3. Tin bucket;

[0037] 4. Plate baking machine;

[0038] 5. Environmental smoke collector;

[0039] 6. Flue;

[0040] 7. Second combustion chamber;

[0041] 8. Multi-stage sorting machine,

[0042] 9. Feed box, 901. Feed inlet, 902. Feed inlet;

[0043] 100. Supporting sliding shaft;

[0044] 200, linkage disk, 201, adjustment slot;

[0045] 300, a first telescopic rod;

[0046] 400, rotating disk;

[0047] 500, regulating motor, 501, driving gear, 502, driven gear ring;

[0048] 600, collection rack;

[0049] 700, second telescopic rod, 701, shielding cover plate, 702, limit stopper;

[0050] 800, third telescopic rod, 801, linkage frame, 802, sealing cover plate;

[0051] 900. Exhaust pipe. DETAILED DESCRIPTION

[0052] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0053] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A system diagram of a first embodiment of a device for disassembling waste circuit boards provided by the present invention; Figure 2 A system diagram of a second embodiment of the device for disassembling waste circuit boards provided by the present invention; Figure 3 A schematic structural diagram of a third embodiment of the device for disassembling waste circuit boards provided by the present invention; Figure 4 for Figure 3 The structural schematic diagram of the feed box part shown; Figure 5 for Figure 4 The structural schematic diagram of the linkage disk part is shown.

[0054] Embodiment 1:

[0055] A device for dismantling waste circuit boards comprises: a metal mesh cylinder 1, a screen 2, a tin bucket 3 and a plate baking machine 4, wherein the metal mesh cylinder 1 is installed inside the plate baking machine 4, the screen 2 is arranged below the metal mesh cylinder 1, and the tin bucket 3 is arranged below the screen 2; an environmental fume collector 5, wherein the environmental fume collector 5 is installed above the metal mesh cylinder 1 and is used to collect lead, smoke and volatile organic compounds generated by low-temperature baking plates of the plate baking machine 4; a secondary combustion chamber 7, wherein the input end of the secondary combustion chamber 7 is connected to the output end of the environmental fume collector 5 through a flue 6, and is used to connect to subsequent fume treatment equipment for purification of pyrometallurgical projects.

[0056] The screen 2 is installed inside the plate baking machine 4 and is located between the bottom of the metal mesh cylinder 1 and the top of the tin bucket 3 .

[0057] The two ends of the metal mesh cylinder 1 are rotatably connected to the inner wall of the board baking machine 4 for flipping and baking the waste circuit boards.

[0058] After a certain amount of waste circuit boards are electrically heated to a certain temperature in the square baking machine 4, the soldering points on the waste circuit boards are melted. During the processing, the built-in metal mesh cylinder 1 of the baking machine 4 moves at a certain speed to separate the electronic components from the waste circuit boards, and enters the screen 2 together to sort different electronic components and waste circuit boards. The smoke and dust generated by low-temperature baking enter the smoke treatment system of the pyrometallurgical project.

[0059] The advantage of using the internal screen 2 of the baking plate machine 4 for internal screening is that the ambient smoke is easy to collect and the investment is small, but the disadvantage is that the screening is not fine enough.

[0060] Electric heating is used to bake the quantitative waste circuit boards, and the square baking board machine 4 reaches the required baking temperature by controlling the magnitude of the current;

[0061] The metal mesh cylinder 1 is connected to the motor, and the motor is controlled to make the metal mesh cylinder 1 inside the baking plate machine 4 reach a certain speed, and the quantitative waste circuit board is 50% to 80% of the space capacity of the square baking plate machine 4;

[0062] The quantitative waste circuit boards are put into the metal mesh cylinder 1 built in the baking machine 4. The metal mesh cylinder 1 is a cylindrical mesh cylinder. The tin soldering points on the waste circuit boards melt under the action of the melting point temperature. The square baking machine 4 remains fixed. The metal mesh cylinder 1 built in the baking machine 4 rotates at a certain speed to separate the waste circuit boards and electronic components inside. Due to the internal temperature of the baking machine 4, the tin liquid and tin ash fall from the metal mesh cylinder 1 built in the baking machine 4 to the tin bucket 3.

[0063] The low temperature baking process temperature of the baking machine 4 is 183° C. to 279° C., ensuring that the soldering points can be melted.

[0064] The pores of the metal mesh cylinder can be enlarged as required, and a screen 2 can be added between the baking machine 4 and the tin bucket 3. The electronic components will pass through the metal mesh cylinder 1 and fall onto the screen 2 as the metal mesh cylinder 1 built into the baking machine rotates, and will be screened inside the baking machine 4.

[0065] Grill plate machine 4 built-in metal mesh cylinder 1 mesh size is diameter The mesh size of screen 2 is diameter The mesh size can be adjusted according to the size of the electronic components on the waste circuit board, and it can also be a square hole. The rotation speed of the built-in metal mesh cylinder 1 of the baking plate machine 4 is 10r / min~30r / min, and the rotation speed is adjusted according to the number and density of the electronic components on the waste circuit board.

[0066] The screen 2 and the tin bucket 3 can be taken out from the baking machine 4 to facilitate the classification and packaging of electronic components.

[0067] The solder joints between the waste circuit boards and electronic components melt rapidly under the baking temperature and separate from the waste circuit boards, thereby generating a large amount of soot, lead and volatile organic compounds, referred to as VOCs;

[0068] Under the action of the environmental smoke collector 5, a large amount of smoke ash and volatile organic compounds enter the smoke system of the pyrometallurgical project;

[0069] The volatile organic compounds are completely burned at high temperature in the secondary combustion chamber 7 of the pyrometallurgical project flue gas system and are harmlessly treated. They are then purified by subsequent equipment in the pyrometallurgical project flue gas system and discharged after meeting the standards.

[0070] The secondary combustion chamber 7 utilizes the secondary combustion chamber 7 in the flue gas system of the pyrometallurgical project. The inlet flue gas temperature of the secondary combustion chamber 7 is greater than 1300°C, the outlet temperature is greater than 1100°C, and the flue gas residual oxygen is controlled at 6-12%, ensuring that the volatile organic compounds generated by baking are fully burned and harmlessly treated. Subsequent equipment will purify the large amount of soot and lead generated by baking and discharge them after meeting the standards.

[0071] Compared with the related art, the device for disassembling waste circuit boards provided by the present invention has the following beneficial effects:

[0072] The board baking machine 4 is used for low-temperature baking to disassemble hazardous waste circuit boards for pre-treatment resource utilization and harmless treatment. Electronic components can be separated from the circuit boards during the baking process, so that the bare waste circuit boards can enter the safe production of the pyrometallurgical project. The soot, lead and volatile organic compounds produced by the baking are fully burned out at a high temperature of 1100°C to 1300°C in the secondary combustion chamber 7 of the pyrometallurgical project flue gas treatment system. Compared with manual disassembly, environmental pollution is greatly reduced, highlighting the harmlessness advantage of the present invention. The flue gas after high-temperature combustion treatment is purified by subsequent equipment of the pyrometallurgical project flue gas treatment system and discharged after meeting environmental protection standards.

[0073] Embodiment 2:

[0074] It also includes a multi-stage sorting machine 8 , and only a tin bucket 3 is provided at the bottom of the metal mesh cylinder 1 . The input end of the multi-stage sorting machine 8 is provided at the output end of the metal mesh cylinder 1 .

[0075] After a certain amount of waste circuit boards are electrically heated to a certain temperature in the square baking machine 4, the tin soldering points on the waste circuit boards are melted. During the processing, the built-in metal mesh cylinder 1 of the baking machine 4 moves at a certain speed to separate the electronic components from the waste circuit boards, and enters the multi-stage sorting machine 8 together to sort different electronic components from the waste circuit boards. The smoke and dust generated by low-temperature baking enter the smoke treatment system of the pyrometallurgical project.

[0076] The advantage of using a multi-stage sorting machine 8 for multi-stage sorting outside is that the fine sorting of electronic components is conducive to the next step of operation, and the environmental smoke is difficult to collect, and it is necessary to add a ring collector on the top of the multi-stage sorting machine, which requires a large investment. It can be selected according to the electronic components.

[0077] When a multi-stage sorting machine 8 is used, the separated waste circuit boards and electronic components enter the multi-stage sorting machine 8 together in the metal mesh cylinder 1 built into the baking machine 4. After multi-stage sorting, the bare waste circuit boards enter the pyrometallurgical project, and the electronic components enter the cracking workshop to be further made into aluminum ingots for sale.

[0078] A method for dismantling waste circuit boards, comprising the following steps:

[0079] S1 Add the waste circuit board into the metal mesh cylinder 1 built in the baking machine 4, the added amount is 50% to 80% of the space capacity of the metal mesh cylinder 1 built in the baking machine 4, and close the feeding door;

[0080] S2 starts the board baking machine 4 to bake the waste circuit boards inside the metal mesh cylinder 1 at a low temperature, and at the same time, the shaft end of the metal mesh cylinder 1 is connected to a rotating mechanism for flipping and baking;

[0081] S3: The soldering point melts and falls off under the action of the internal temperature of the baking machine 4, and the bare waste circuit board and the electronic components are separated during the turning of the metal mesh cylinder 1. The tin liquid and tin ash fall through the mesh of the metal mesh cylinder 1 built in the baking machine 4 to the tin bucket 3 inside the baking machine 4 for collection;

[0082] S4 During the baking process, the lead, smoke and volatile organic compounds generated by the low-temperature baking plate inside the baking machine 4 are collected by the environmental smoke collector 5, and the smoke and flue gas are collected into the second combustion chamber 7 through the flue 6;

[0083] S5 In the secondary combustion chamber 7, the combustible components, incompletely burned components, and volatile organic compounds in the ash are completely burned at a high temperature of 1100°C to 1300°C and then enter the pyrometallurgical project flue gas subsequent treatment equipment for purification and then discharged in compliance with environmental standards;

[0084] The scrap bare circuit boards baked in the metal mesh cylinder 1 built into the S6 baking machine 4 are input into the screen 2 or the multi-stage sorting machine 8 together with the electronic components, and are picked in the screen 2 inside the baking machine 4 or sorted under the action of the multi-stage sorting machine 8. The sorted scrap bare circuit boards enter the pyrometallurgical project for processing, and the electronic components enter the cracking workshop for further processing to be made into aluminum ingots for sale.

[0085] The method is used for the pretreatment of raw materials for pyrometallurgical disposal of waste circuit boards, and has low treatment cost, high treatment efficiency, and no dioxin pollution or other secondary pollution in the flue gas. It essentially achieves the pollution of the environment by the flue gas during the disassembly of hazardous waste circuit boards, as well as the recycling and reuse of resources.

[0086] Embodiment 3:

[0087] A feed box 9 is fixedly connected to one side of the baking machine 4, and a feed inlet 901 and a feeding inlet 902 are respectively provided on the feed box 9;

[0088] The inner wall of the feed box 9 is fixedly connected with a supporting slide shaft 100, and the surface of the supporting slide shaft 100 is slidably connected with a linkage disk 200, and an adjusting groove 201 is opened on the linkage disk 200. A first telescopic rod 300 is transmission-connected between the bottom of the linkage disk 200 and the feed box 9 through a rotating member, and a rotating disk 400 is provided on one side of the linkage disk 200. An adjusting motor 500 is fixedly connected to the inner wall of the adjusting groove 201, and a driving gear 501 is fixedly connected to the output end of the adjusting motor 500, and a driven gear ring 502 is meshed on the surface of the driving gear 501, and a collecting rack 600 is fixedly connected to one side of the rotating disk 400.

[0089] A feed box 9 is provided at the feed end of the baking machine 4 for separating the feed end of the baking machine 4, so as to facilitate the advance preparation and storage of waste circuit boards that need to be disassembled and processed during the operation of the baking machine 4. The waste circuit boards fall into the inside of the collecting rack 600 through the feed port 901, and no manual feeding is required. The linkage disk 200 is driven by the first telescopic rod 300 to input into the feed port end of the baking machine 4. When the linkage disk 200 moves, it simultaneously drives the collecting rack 600 on the rotating disk 400 to move. The collecting rack 600 penetrates into the inner side of the metal mesh cylinder 1, and the adjusting motor 500 is started. The adjusting motor 500 drives the collecting rack 600 to rotate. When the collecting rack 600 rotates, the waste circuit boards collected on the top are turned over and fed, so that the materials are put into the inside of the metal mesh cylinder 1, which is convenient for the processing of the waste circuit boards inside the metal mesh cylinder 1.

[0090] The feeding port 902 of the feed box 9 is connected to the input end of the baking machine 4, which facilitates the transportation of the waste circuit boards stored in the feed box 9;

[0091] The feed port 901 is located at the top of the feed box 9, which is convenient for the waste circuit boards to be put into the feed box 9;

[0092] The surface of the support sliding shaft 100 is slidably connected to the surface of the linkage disk 200, providing support and limiting effect for the horizontal sliding of the linkage disk 200, wherein at least two groups of support sliding shafts 100 are provided and distributed horizontally;

[0093] The first telescopic rod 300 is a hydraulic telescopic rod, the bottom end of which is rotatably connected to the bottom of the inner wall of the feed box 9 through a rotating member, and the top end of which is rotatably connected to the bottom of the linkage disk 200 through another rotating member, so that when the first telescopic rod 300 is contracted, the linkage disk 200 can be synchronously pulled to move toward the baking plate machine 4, and when the first telescopic rod 300 is extended, the linkage disk 200 is synchronously pushed to move away from the baking plate machine 4, so as to reset the linkage disk 200;

[0094] The surface of the rotating disk 400 is rotationally connected to the surface of the linkage disk 200, and the rotating disk 400 is meshed with the surface of the driving gear 501 through the driven ring gear 502. The axis of the driving gear 501 is fixed to the output end of the adjusting motor 500, and the rotation is adjusted by the adjusting motor 500. When the driving gear 501 rotates, the driven ring gear 502 is driven to rotate synchronously through the meshing structure. When the driven ring gear 502 rotates, the rotating disk 400 is synchronously driven to rotate. When the rotating disk 400 rotates, it is convenient to drive the collecting rack 600 to rotate. When the collecting rack 600 rotates, it is convenient to flip and unload the waste circuit boards stored thereon, thereby facilitating the flipping and feeding of the collecting rack 600 after it penetrates into the metal mesh tube 1, and no manual feeding is required.

[0095] A second telescopic rod 700 is fixedly connected to the top of the feed box 9, and a shielding cover 701 is fixedly connected to the output end of the second telescopic rod 700. The surface of the shielding cover 701 is covered above the feed port 901. Limit blocks 702 are provided on both sides of the shielding cover 701, and the inner surface of the limit block 702 is slidably connected to the surface of the shielding cover 701.

[0096] The second telescopic rod 700 facilitates the shielding cover plate 701 to move horizontally. When the shielding cover plate 701 moves horizontally to the top of the feed inlet 901, the feed inlet 901 is shielded and sealed to prevent the feed inlet 901 from being exposed when no material is fed and affecting the external environment.

[0097] The limit blocks 702 are located on both sides of the feed inlet 901 and are used to limit the sliding movement of the shielding cover plate 701 to ensure the stability of the shielding cover plate 701 after it slides horizontally to the top of the feed inlet 901 .

[0098] The outer surface of the baking machine 4 is fixedly connected with a third telescopic rod 800, the output end of the third telescopic rod 800 is fixedly connected with a linkage frame 801, the bottom of the linkage frame 801 is fixedly connected with two sets of sealing cover plates 802, and the top of the baking machine 4 is provided with an exhaust pipe 900.

[0099] The third telescopic rod 800 is connected to two sets of sealing cover plates 802 through a linkage frame 801. The two sets of sealing cover plates 802 are respectively arranged at the input end and the output end of the baking plate machine 4, and are used to shield and seal the input and output parts of the baking plate machine 4.

[0100] The surface of the rotating disk 400 is rotatably connected to the inner surface of the adjusting groove 201 , and the inner surface of the rotating disk 400 is fixedly connected to the outer surface of the driven gear ring 502 .

[0101] When the driving gear 501 rotates, it can synchronously drive the driven ring gear 502 to rotate through the meshing structure. When the driven ring gear 502 rotates, it synchronously drives the rotating disk 400 to rotate, thereby facilitating the synchronous rotation of the collection rack 600 thereon. The top of the collection rack 600 is hollowed out, which is convenient for receiving and storing waste circuit boards, and at the same time convenient for conveying waste circuit boards when turning over.

[0102] The bottom end of the limit stopper 702 is fixedly connected to the top of the feed box 9 , and the two limit stoppers 702 are symmetrically distributed.

[0103] Beneficial effects:

[0104] The feed box 9 is used to facilitate the storage of waste circuit boards that need to be processed in advance during the operation of the baking machine 4, and the linkage disk 200 is used to facilitate the collection rack 600 to penetrate into the inner side of the metal mesh cylinder 1, and the adjusting motor 500 is started. The adjusting motor 500 drives the collection rack 600 to rotate, and when the collection rack 600 rotates, the waste circuit boards collected on the top are turned over and fed, so that the materials are fed into the metal mesh cylinder 1, which is convenient for the processing of the waste circuit boards inside the metal mesh cylinder 1, does not require manual feeding, avoids unnecessary damage to the feeding personnel caused by temperature, and improves the safety of equipment operation.

[0105] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dismantling device for waste circuit boards, characterized in that: include: A metal mesh cylinder, a screen or a multi-stage sorting machine, a tin bucket and a baking plate machine, wherein the metal mesh cylinder is installed inside the baking plate machine, the screen is arranged below the metal mesh cylinder, and the tin bucket is arranged below the screen; an environmental smoke collector, wherein the environmental smoke collector is installed above the metal mesh cylinder and is used to collect lead, smoke and volatile organic compounds generated by the low-temperature baking plates of the baking plate machine, wherein the low temperature ranges from 183°C to 279°C; a secondary combustion chamber, wherein the input end of the secondary combustion chamber is connected to the output end of the environmental smoke collector through a flue, and the secondary combustion chamber is used to connect the subsequent treatment equipment for smoke of the pyrometallurgical project for purification; a feed box is fixedly connected to one side of the baking plate machine, and a feed port and a feeding port are respectively provided on the feed box; a support sliding shaft is fixedly connected to the inner wall of the feed box, and a linkage disk is slidably connected to the surface of the support sliding shaft, and an adjustment slot is provided on the linkage disk, and the bottom of the linkage disk is connected to the feed box through a rotating member transmission connection A first telescopic rod is connected, a rotating disk is provided on one side of the linkage disk, an adjusting motor is fixedly connected to the inner wall of the adjusting groove, an output end of the adjusting motor is fixedly connected to a driving gear, a driven gear ring is meshed on the surface of the driving gear, a collecting rack is fixedly connected to one side of the rotating disk, the surface of the rotating disk is rotatably connected to the inner surface of the adjusting groove, and the inner surface of the rotating disk is fixedly connected to the outer surface of the driven gear ring; a second telescopic rod is fixedly connected to the top of the feed box, a shielding cover plate is fixedly connected to the output end of the second telescopic rod, a surface cover of the shielding cover plate is arranged above the feed port, and limited stop blocks are provided on both sides of the shielding cover plate, and the inner surface of the limited stop block is slidably connected to the surface of the shielding cover plate; a third telescopic rod is fixedly connected to the outer surface of the baking plate machine, and a linkage frame is fixedly connected to the output end of the third telescopic rod, two sets of sealing cover plates are fixedly connected to the bottom of the linkage frame, and an exhaust pipe is provided on the top of the baking plate machine.

2. The dismantling device for waste circuit boards according to claim 1, characterized in that: The screen is installed inside the baking plate machine and is located between the bottom of the metal mesh cylinder and the top of the tin bucket.

3. The dismantling device for waste circuit boards according to claim 1, characterized in that: The two ends of the metal mesh cylinder are rotatably connected to the inner wall of the board baking machine, and are used for flipping and baking the waste circuit boards.

4. The dismantling device for waste circuit boards according to claim 1, characterized in that: The bottom of the metal mesh cylinder is only provided with a tin bucket, and the input end of the multi-stage sorting machine is arranged at the output end of the metal mesh cylinder.

5. The dismantling device for waste circuit boards according to claim 1, characterized in that: The bottom end of the limit stopper is fixedly connected to the top of the feed box, and the two limit stops are symmetrically distributed.

6. A method for processing waste circuit boards using a dismantling device for waste circuit boards as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1 Add the waste circuit board into the metal mesh cylinder built into the baking machine, the added amount is 50%~80% of the space capacity of the metal mesh cylinder built into the baking machine, and close the feeding door; S2 starts the board baking machine to bake the waste circuit boards inside the metal mesh cylinder at a low temperature, and at the same time, the shaft end of the metal mesh cylinder is connected to a rotating mechanism for flipping and baking; S3: The soldering points melt and fall off under the influence of the internal temperature of the baking machine, and the bare waste circuit boards and electronic components are separated during the flipping of the metal mesh cylinder. The tin liquid and tin ash fall through the mesh holes of the metal mesh cylinder built into the baking machine and fall into the tin bucket inside the baking machine for collection. During the baking process, the lead, smoke and volatile organic compounds generated by the low-temperature baking plates inside the baking machine are collected by the environmental smoke collector, and the smoke and flue gas are collected into the second combustion chamber through the flue; In the secondary combustion chamber of S5, the combustible components, incompletely burned components and volatile organic compounds in the soot are completely burned at a high temperature of 1100℃~1300℃ and then enter the subsequent flue gas treatment equipment of the pyrometallurgical project for purification and then discharged in compliance with environmental standards; The scrap circuit board bare boards baked in the metal mesh cylinder built into the S6 baking machine are input into the screen or multi-stage sorting machine together with the electronic components, and are picked in the screen inside the baking machine or sorted by the multi-stage sorting machine. The scrap circuit board bare boards after picking or sorting are sent to the pyrometallurgical project for processing, and the electronic components are sent to the cracking workshop for further processing to be made into aluminum ingots for sale.

Images