Smelting device for waste copper recovery and smelting method thereof

Abstract

The invention relates to the technical field of waste copper recycling and smelting, in particular to a smelting device for waste copper recycling and a smelting method thereof.The device comprises a smelting furnace, a preheating furnace is arranged on the smelting furnace, a honeycomb cylinder is rotationally arranged in the preheating furnace, a sealing plate is arranged at the feeding end of the honeycomb cylinder, and a pot cover is arranged at the feeding end of the preheating furnace; a reverse rotating assembly is arranged on the pot cover, the sealing plate is connected with the pot cover through the reverse rotating assembly, a driving structure for driving the sealing plate to rotate through the honeycomb cylinder is arranged on the sealing plate, and an overturning assembly is rotationally arranged at the end, located in the honeycomb cylinder, of the sealing plate; through the reverse rotating assembly, the overturning assembly can generate rotating force in the direction opposite to that of the honeycomb cylinder, the overturning efficiency of the waste copper wire in the honeycomb cylinder is improved, the problem that heating is uneven due to the fact that the waste copper wire cannot be locally overturned is solved, the heating effect is further optimized, it is guaranteed that the waste copper wire is evenly softened, and follow-up treatment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of waste copper recycling and smelting, and specifically, to a smelting device for waste copper recycling and a smelting method thereof. Background Art

[0002] The smelting device for waste copper recycling is a device used to extract pure copper or copper alloy from waste copper products. With the development of resource recycling technology, waste copper recycling plays an important role in the regeneration of metal resources.

[0003] During the waste copper smelting process, a large amount of high-temperature flue gas generated by the smelting furnace contains considerable potential for heat energy recovery. In current technologies, a waste heat boiler is usually used to pre-treat waste copper. By using this high-temperature flue gas to heat the waste copper, it is softened, which facilitates subsequent crushing and improves the smelting efficiency. However, in actual operation, taking out the pre-treated waste copper from the waste heat boiler poses certain challenges. Due to the extremely high internal temperature and the fact that the waste copper itself has also reached a relatively high temperature, existing methods mainly rely on directly clamping with fixtures. This method is not only complex and inefficient in operation, but also unable to effectively assist the flipping of waste copper wires in the waste heat boiler after feeding, resulting in uneven heating and affecting the overall preheating effect. In addition, using fixtures to pick up waste copper deep into the high-temperature environment not only increases the operation difficulty but also limits the extraction speed of waste copper.

[0004] Based on this, the present invention discloses a smelting device for waste copper recycling and a smelting method thereof. Summary of the Invention

[0005] To solve the problems of uneven heating and low operation efficiency caused by the difficulty of efficiently flipping and quickly taking out high-temperature preheated waste copper by fixtures in the waste copper pre-treatment technology in the background art, the present invention provides a smelting device for waste copper recycling, which includes a smelting furnace. A preheating furnace is provided on the smelting furnace. The gas outlet end of the smelting furnace is connected to a connecting pipe. A heat conduction cover is connected to the connecting pipe. The connecting pipe is connected to the bottom of the preheating furnace through the heat conduction cover. The length and width of the top end of the heat conduction cover are respectively adapted to the length and diameter of the preheating furnace.

[0006] During the heating process of the waste copper wires in the preheating furnace, since the waste copper wires are relatively disordered, in order to improve the preheating efficiency, the present invention adopts a rotating method. As a further improvement of this technical solution, a honeycomb cylinder is rotatably arranged in the preheating furnace. A servo motor is arranged on one side of the preheating furnace away from the feeding end. The output end of the servo motor is connected to the honeycomb cylinder.

[0007] On this basis, during the preheating process, in order to improve the utilization efficiency of waste heat, it is necessary to seal the preheating furnace. As a further improvement of the technical solution, a sealing ring is fixedly arranged inside the feeding end of the honeycomb cylinder, and the inner wall of the sealing ring is of a frustum structure. As shown in Figure 8 shown, a sealing plate is further arranged on the feeding end of the honeycomb cylinder, a pot cover is arranged on the feeding end of the preheating furnace, a reverse rotation assembly is arranged on the pot cover, the sealing plate is connected with the pot cover through the reverse rotation assembly, and the structure of the sealing plate is adapted to the inner wall of the sealing ring.

[0008] In another solution, even if the honeycomb cylinder rotates, due to the complexity and disorder of the waste copper wires, the efficiency of the waste copper wires turning over in the honeycomb cylinder cannot be improved, and there will also be a problem that the waste copper wires cannot be turned over locally, resulting in uneven heating. In order to enable the waste copper wires placed in the honeycomb cylinder to enter the deep part of the honeycomb cylinder, and at the same time, during the rotation of the honeycomb cylinder, increase the turning efficiency of the waste copper wires. As a further improvement of the technical solution, a driving structure for driving the sealing plate to rotate is arranged on the sealing plate through the honeycomb cylinder, and a turning assembly is rotatably arranged at one end of the sealing plate located inside the honeycomb cylinder. As a further improvement of the technical solution, the driving structure includes a driving rod fixedly arranged inside the sealing ring. The driving rod is of an L-shaped structure. A driving block is fixedly arranged on the top end of one side of the sealing plate located inside the honeycomb cylinder. The driving rod contacts the driving block to drive the sealing plate to rotate.

[0009] Since the rotation direction of the sealing plate is the same as that of the honeycomb cylinder, the turning assembly arranged on the sealing plate provides a rotational force in the same direction as the rotation direction of the honeycomb cylinder, so it cannot effectively turn over the waste copper wires. On this basis, the turning assembly produces an effect opposite to the rotation direction of the honeycomb cylinder through the reverse rotation assembly. As a further improvement of the technical solution, the reverse rotation assembly includes a first bevel gear, a second bevel gear and a third bevel gear. The two ends of the second bevel gear are respectively meshed with the first bevel gear and the third bevel gear. The second bevel gear is rotatably connected to the pot cover. The first bevel gear is fixedly connected to the central position of the sealing plate. The third bevel gear is fixedly connected to the rotating rod. One end of the rotating rod is rotatably connected to the pot cover, and the other end passes through the third bevel gear, the first bevel gear and the sealing plate in sequence and then extends into the honeycomb cylinder and is connected to the turning assembly. The sealing plate and the first bevel gear are rotatably connected to the rotating rod.

[0010] In the third solution, since the waste copper wires are placed near the feeding end of the honeycomb cylinder when placed in the honeycomb cylinder, it is necessary to push the waste copper wires to the deep part of the honeycomb cylinder to increase the heating effect. At the same time, during the process of the waste copper wires following the turning assembly to turn over, the turning assembly is also required to drive the waste copper wires to rotate in a way that can clamp or hook them. As a further improvement of the technical solution, the flipping assembly includes a mounting plate fixedly connected to the rotating rod. A plurality of hanging rods are fixedly arranged on the side of the mounting plate away from the rotating rod. The hanging rod includes a flipping rod, and a plurality of barbs are fixedly arranged at the end of the flipping rod away from the mounting plate in a circumferential array. The barb has a U-shaped structure. When the pot lid docks and fixes the flipping assembly with the sealing ring and the end face of the preheating furnace, the pushing surface formed by the horizontal ends of the plurality of barbs parallel to the end face of the flipping rod can push the waste copper wire deep into the honeycomb cylinder.

[0011] On this basis, since the waste copper wire is pushed deep into the honeycomb cylinder, after the heated waste copper shrinks, part of it scatters and part of it is hooked by the barbs; As a further improvement of the technical solution, the pot lid is arranged in a conical structure, and the end with a larger radius of the pot lid is the feeding end; a communication port is opened at the bottom of the preheating furnace, and a heat conducting plate is fixedly arranged on the communication port. The heat conducting cover is connected to the preheating furnace through the heat conducting plate. A plurality of second heat conducting holes are uniformly opened on the heat conducting plate; a plurality of first heat conducting holes are uniformly opened at the end of the heat conducting plate away from the feeding end of the honeycomb cylinder. The rest of the heat conducting plate is the second heat conducting hole. The first heat conducting hole has a conical structure with an inner diameter smaller at the top than at the bottom. The heat conducting plate is a circular structure, and the inner diameter of the first heat conducting hole is smaller than that of the second heat conducting hole.

[0012] The second object of the present invention is to provide a method for smelting using the above-mentioned smelting device for waste copper recycling, and the specific steps are as follows: S1. Place the waste copper wire pulverized by the pulverizing device into the smelting furnace for smelting. The high-temperature flue gas generated by the smelting enters the preheating furnace through the connecting pipe and the heat conducting cover; S2. Place the waste copper wire to be preheated into the honeycomb cylinder. During the process of closing the pot lid, the waste copper wire is pushed deep into the honeycomb cylinder through the pushing surface of the barbs. Then, the pot lid is closed on the smelting furnace and the honeycomb cylinder, and then fixed through the locking buckles arranged around the pot lid; S3. Start the servo motor to drive the honeycomb cylinder to rotate. The rotation of the honeycomb cylinder drives the sealing plate to rotate through the driving structure, and then drives the flipping assembly to rotate in the reverse direction through the reverse rotation assembly, so that the waste copper wire gradually hooks the barbs and rotates in the opposite direction to the honeycomb cylinder along with the barbs; S4. After the preheated waste copper wire becomes soft and shrinks, it hooks the barbs. At this time, open the pressure relief valve on the preheating furnace, and then open the pot lid. During the process of opening the pot lid, the high-temperature flue gas with a flow rate greater than that of the second heat conducting hole will be generated in the first heat conducting hole, blowing the waste copper wire at the end of the honeycomb cylinder towards the feeding end of the honeycomb cylinder. During the process of opening the pot lid, the waste copper wire is taken out along with the barbs and transferred to the pulverizing device for pulverization, and then transferred to the smelting furnace for smelting.

[0013] Beneficial effects of the present invention compared with the prior art: 1. In the smelting device for waste copper recycling, the reverse rotation assembly is realized to improve the flipping efficiency. Through the reverse rotation assembly composed of the first bevel gear, the second bevel gear and the third bevel gear, the flipping assembly can generate a rotational force in the opposite direction to the honeycomb cylinder, increasing the flipping efficiency of the waste copper wire in the honeycomb cylinder. This not only solves the problem of uneven heating caused by the failure of partial flipping of the waste copper wire, but also further optimizes the heating effect, ensures the uniform softening of the waste copper wire, and facilitates subsequent processing.

[0014] In the smelting device for waste copper recycling, the barb design is realized to facilitate the removal of the waste copper wire. The flipping assembly is provided with flipping rods with barbs, which can not only push the waste copper wire deep into the honeycomb cylinder during rotation, but also effectively hook the waste copper wire, facilitating its removal. This design significantly improves the removal efficiency of the waste copper wire, reduces the need for manual intervention, reduces the risk of worker injury, and also helps to improve the automation degree of the entire process flow.

[0015] In the smelting device for waste copper recycling, the heat conduction hole design is realized to enhance gas flow. The heat conduction plate is provided with first heat conduction holes and second heat conduction holes of different specifications. The first heat conduction holes are conical structures, which enhance the wind force in a specific area and help to push the removal of the waste copper wire by the air flow when the preheating furnace is opened. Combined with the inclined inner wall of the honeycomb cylinder, the rapid and safe removal of the waste copper wire is realized, improving the work efficiency. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the preheating furnace of the present invention; Figure 3 is the structural sectional view of the preheating furnace of the present invention; Figure 4 is the structural schematic diagram of the heat conduction plate of the present invention; Figure 5 is the structural sectional view of the heat conduction plate of the present invention; Figure 6 is the structural schematic diagram of the honeycomb cylinder of the present invention; Figure 7 is the structural sectional view of the honeycomb cylinder of the present invention; Figure 8 is Figure 7 the enlarged structural view of part A in Figure 9 is the structural schematic diagram of the flipping assembly of the present invention; Figure 10 is the structural schematic diagram of the flipping rod of the present invention; Figure 11 is the structural sectional view of the pot lid of the present invention; Figure 12 This is a schematic structural diagram of the reverse rotation assembly of the present invention.

[0017] The meanings of the various labels in the figure are as follows: 1. Smelting furnace; 2. Connecting pipe; 3. Heat conduction cover; 4. Preheating furnace; 5. Servo motor; 6. Pot lid; 7. Lock; 8. Handle; 9. Honeycomb cylinder; 10. Heat conduction plate; 11. First heat conduction hole; 12. Second heat conduction hole; 13. Sealing ring; 14. Driving rod; 15. Driving block; 16. Sealing plate; 17. Mounting plate; 18. Flipping rod; 19. Barbs; 20. Reverse rotation assembly; 201. First bevel gear; 202. Second bevel gear; 203. Third bevel gear; 204. Rotating rod. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] In the existing waste copper pretreatment technology, when using a waste heat boiler for heating, there are problems of uneven heating and low operation efficiency caused by the difficulty of efficiently flipping the fixture and quickly taking out the waste copper after high-temperature preheating.

[0020] For this reason, the present invention provides a smelting device method for waste copper recycling. Refer to Figures 1-3 As shown, it includes a smelting furnace 1. A preheating furnace 4 is provided on the smelting furnace 1. The gas outlet end of the smelting furnace 1 is connected to a connecting pipe 2. A heat conduction cover 3 is connected to the connecting pipe 2. The connecting pipe 2 is connected to the bottom of the preheating furnace 4 through the heat conduction cover 3. The length and width of the top end of the heat conduction cover 3 are respectively adapted to the length and diameter of the preheating furnace 4.

[0021] During operation, the high-temperature flue gas generated by smelting the crushed waste copper wire in the smelting furnace 1 enters the preheating furnace 4 through the connecting pipe 2 and the heat conduction cover 3, heating the inside of the preheating furnace 4, so that the waste copper wire placed in the preheating furnace 4 is softened after being heated at a high temperature, which is convenient for subsequent crushing treatment, improves the crushing efficiency, and prolongs the service life of the cutting tool of the crushing device; During the heating process of the waste copper wire in the preheating furnace 4, since the waste copper wire is relatively disordered, in order to improve the preheating efficiency, the present invention adopts a rotating method to rotate the waste copper wire in the preheating furnace 4 to increase the contact area and heating efficiency with the high-temperature flue gas ejected from the bottom of the preheating furnace 4; Refer to Figure 3As shown in the figure, a honeycomb cylinder 9 is rotatably arranged in the preheating furnace 4. A servo motor 5 is arranged on one side of the preheating furnace 4 away from the feeding end. The output end of the servo motor 5 is connected to the honeycomb cylinder 9. In this way, the honeycomb cylinder 9 is driven by the servo motor 5 to rotate, so that the waste copper wire also rotates accordingly, and the high-temperature flue gas enters the honeycomb cylinder 9 through the honeycomb holes on the honeycomb cylinder 9.

[0022] Furthermore, during the preheating process, in order to improve the utilization efficiency of waste heat, the preheating furnace 4 needs to be sealed. Refer to Figure 3 and Figures 7-9 As shown in the figure, a sealing ring 13 is fixedly arranged inside the feeding end of the honeycomb cylinder 9. The inner wall of the sealing ring 13 is of a frustum-shaped structure. As Figure 8 shown in the figure, a sealing plate 16 is also arranged on the feeding end of the honeycomb cylinder 9. A pot cover 6 is arranged at the feeding end of the preheating furnace 4. A reverse rotation assembly 20 is arranged on the pot cover 6. The sealing plate 16 is connected to the pot cover 6 through the reverse rotation assembly 20. The structure of the sealing plate 16 is adapted to the inner wall of the sealing ring 13.

[0023] During operation, a number of locking buckles 7 are fixedly arranged around the pot cover 6. The pot cover 6 is sealed at the feeding end of the preheating furnace 4 through the locking buckles 7. The sealing plate 16 is clamped inside the sealing ring 13 on the honeycomb cylinder 9 to form a sealing structure. However, a certain gap is reserved between the sealing plate 16 and the sealing ring 13. The frustum-shaped structure of the sealing ring 13 is only to improve the sealing effect. Ultimately, the sealing effect is achieved by the contact surface between the pot cover 6 and the preheating furnace 4, and then it is tightened in combination with the locking buckles 7.

[0024] In addition, even if the honeycomb cylinder 9 rotates, due to the complexity and disorder of the waste copper wire, the turnover efficiency of the waste copper wire in the honeycomb cylinder 9 cannot be improved, and there will also be a problem that the local turnover of the waste copper wire cannot be achieved, resulting in uneven heating. Therefore, in order to enable the waste copper wire placed in the honeycomb cylinder 9 to enter the deep part of the honeycomb cylinder 9, and at the same time, during the rotation of the honeycomb cylinder 9, increase the turnover efficiency of the waste copper wire. Refer to Figure 7 and Figures 9-12 shown in the figure; a rotation driving structure for driving the sealing plate 16 to rotate through the honeycomb cylinder 9 is arranged on the sealing plate 16. A turnover assembly is rotatably arranged at one end of the sealing plate 16 located inside the honeycomb cylinder 9. Specifically, as Figure 8 shown in the figure, the driving structure includes a driving rod 14 fixedly arranged inside the sealing ring 13. The driving rod 14 is of an L-shaped structure. A driving block 15 is fixedly arranged on the top of one side of the sealing plate 16 located inside the honeycomb cylinder 9. The driving rod 14 contacts the driving block 15 to drive the sealing plate 16 to rotate.

[0025] During operation, the honeycomb cylinder 9 rotates. The driving rod 14 on the honeycomb cylinder 9 drives the driving block 15 to move accordingly, thereby driving the sealing plate 16 to rotate. However, at this time, the rotation direction of the sealing plate 16 is the same as that of the honeycomb cylinder 9. Then, the rotating force provided by the flipping assembly on the sealing plate 16, which is in the same direction as the rotation direction of the honeycomb cylinder 9, cannot effectively flip the waste copper wire. Therefore, referring to Figure 12 As shown, the flipping assembly produces an effect opposite to the rotation direction of the honeycomb cylinder 9 through the reverse rotation assembly 20. Among them, the reverse rotation assembly 20 includes a first bevel gear 201, a second bevel gear 202, and a third bevel gear 203. The two ends of the second bevel gear 202 are respectively engaged with the first bevel gear 201 and the third bevel gear 203. The second bevel gear 202 is rotatably connected to the pot lid 6. The first bevel gear 201 is fixedly connected to the central position of the sealing plate 16. The third bevel gear 203 is fixedly connected to the rotating rod 204. One end of the rotating rod 204 is rotatably connected to the pot lid 6, and the other end passes through the third bevel gear 203, the first bevel gear 201, and the sealing plate 16 in sequence and then extends into the honeycomb cylinder 9 and is connected to the flipping assembly. The sealing plate 16 and the first bevel gear 201 are rotatably connected to the rotating rod 204.

[0026] It can be seen from this that the rotation of the sealing plate 16 drives the third bevel gear 203 to rotate in the opposite direction through the transmission of the first bevel gear 201 and the second bevel gear 202, and the third bevel gear 203 drives the flipping assembly to rotate in the same direction as the third bevel gear 203 through the rotating rod 204. Therefore, the flipping assembly can produce a rotating effect in the opposite direction relative to the honeycomb cylinder 9. Then, the waste copper wire located in the honeycomb cylinder 9 can rotate in the opposite direction to the honeycomb cylinder 9 through the flipping assembly, increasing the flipping efficiency of the waste copper wire in the honeycomb cylinder 9 and improving its heating effect in the honeycomb cylinder 9.

[0027] Furthermore, since the waste copper wire is placed near the feeding end of the honeycomb cylinder 9 when it is placed in the honeycomb cylinder 9, it is necessary to push the waste copper wire deep into the honeycomb cylinder 9 to increase the heating effect. At the same time, during the process of the waste copper wire following the flipping assembly to flip, it is also necessary for the flipping assembly to drive the waste copper wire to rotate in a way that can clamp or hook it. Therefore, as Figures 9-10 shown; the flipping assembly includes a mounting plate 17. The mounting plate 17 is fixedly connected to the rotating rod 204. A plurality of hanging rods are fixedly arranged on the side of the mounting plate 17 away from the rotating rod 204. The hanging rods include flipping rods 18. A plurality of barbs 19 are fixedly arranged in a circumferential array at the end of the flipping rod 18 away from the mounting plate 17. The barbs 19 are of a U-shaped structure.

[0028] During operation, when the pot cover 6 is fixed with the flip assembly to the sealing ring 13 and the end face of the preheating furnace 4, a plurality of barbs 19 and the horizontal ends parallel to the end faces of the flip rods 18 form a pushing surface, which can push the waste copper wire to the depth of the honeycomb tube 9, and the barbs 19 will also be hooked with the waste copper wire during the pushing process, and then when the barbs 19 rotate in the opposite direction to the honeycomb tube 9, the waste copper wire can be driven to flip, and even if the waste copper wire is not hooked with the barbs 19, it will gradually hook with the barbs 19 during the flipping process, and finally drive the waste copper wire to rotate in the opposite direction through the barbs 19.

[0029] Further, refer to Figures 3-7 As shown, since the waste copper wire is pushed to the depth of the honeycomb tube 9, some of the waste copper is scattered and some is hooked by the barb 19 after shrinking after heating. Therefore, in order to improve the efficiency of taking out and reduce the risk of injury to workers, the pot cover 6 is set to a conical structure in the removal stage. The end of the pot cover 6 with a larger radius is the feeding end, so that the waste copper wire can slide out autonomously by relying on its own gravity; and considering that the waste copper wire may gather at the feeding end during the heating process of the conical honeycomb tube 9, the existence of the barb 19 can push the waste copper wire to the depth of the honeycomb tube 9; secondly, In order to further improve the efficiency of taking out the scrap copper wire, a connecting port is provided at the bottom of the preheating furnace 4, a heat conducting plate 10 is fixedly provided on the connecting port, the heat conducting cover 3 is connected to the preheating furnace 4 through the heat conducting plate 10, and a plurality of second heat conducting holes 12 are evenly provided on the heat conducting plate 10; a plurality of first heat conducting holes 11 are evenly provided on one end of the heat conducting plate 10 away from the feeding end of the honeycomb tube 9, and the rest of the heat conducting plate 10 is the second heat conducting holes 12, the first heat conducting holes 11 are a conical structure with a top inner diameter smaller than a bottom inner diameter, the heat conducting plate 10 is a circular structure, and the inner diameter of the first heat conducting hole 11 is smaller than the inner diameter of the second heat conducting hole 12; During operation, after the pressure relief valve on the preheating furnace 4 is opened to release the pressure, the lid 6 is opened by the handle 8 arranged on the end of the lid 6 away from the preheating furnace 4. As the lid 6 is opened, the first heat conduction hole 11 and the second heat conduction hole 12 are connected to the outside world, and the high-temperature flue gas will be directly sprayed. In this process, the first heat conduction hole 11 located at the honeycomb tube 9 away from the feed end is a conical structure, and the inner diameter of the top is smaller than the second heat conduction hole 12. Therefore, the wind force in this area will be stronger, so that the waste copper wire can also be pushed out by the airflow. The inclined inner wall of the honeycomb tube 9 is convenient for taking out some scattered waste copper wires; more parts are hooked by the barb 19 and taken out in conjunction with the opening of the lid 6, and then quickly transferred to the crushing device for crushing. After crushing, they can be transferred to the smelting furnace 1 for smelting.

[0030] In summary, the high-temperature flue gas of the smelting furnace 1 enters the preheating furnace 4 through the connecting pipe 2 and the heat conduction cover 3 to preheat the waste copper wire in the honeycomb cylinder 9, realizing the introduction of waste heat; the servo motor 5 drives the honeycomb cylinder 9 to rotate forward, and the reverse rotation assembly 20 drives the barbs 19 to move in the reverse direction, forcing the waste copper wire to roll and penetrate deep into the honeycomb cylinder 9 to achieve two-way flipping; during discharging, the gradient air flow of the conical honeycomb cylinder 9 and the heat conduction plate 10 cooperate to achieve rapid and safe discharging; through two-way flipping and gradient air flow, the waste copper wire is uniformly softened, and the waste heat of the flue gas is directly used for pretreatment. Combining with automatic discharging reduces the dependence on labor, that is, the closed-loop design of waste heat cascade utilization - dynamic flipping - intelligent discharging reduces the energy consumption of waste copper pretreatment by more than 30%, and at the same time realizes the efficient connection of the heating - crushing - melting process; furthermore, it effectively solves the problems of uneven heating and low operation efficiency caused by the fixture's difficulty in efficiently flipping and quickly removing the waste copper after high-temperature preheating when using a waste heat boiler in the existing waste copper pretreatment technology.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A smelting device for recycling waste copper, comprising a smelting furnace (1), wherein a preheating furnace (4) is arranged on the smelting furnace (1), characterized in that: A honeycomb tube (9) is rotatably arranged in the preheating furnace (4), the high-temperature flue gas in the smelting furnace (1) flows into the honeycomb tube (9), a sealing plate (16) is arranged at the feeding end of the honeycomb tube (9), a pot cover (6) is arranged at the feeding end of the preheating furnace (4), a reverse rotation component (20) is arranged on the pot cover (6), the sealing plate (16) is connected to the pot cover (6) via the reverse rotation component (20), a driving structure for driving the sealing plate (16) to rotate via the honeycomb tube (9) is arranged on the sealing plate (16), a flip component is rotatably arranged at one end of the sealing plate (16) located in the honeycomb tube (9), and the flip component produces an effect in the opposite direction of rotation of the honeycomb tube (9) via the reverse rotation component (20); Wherein, the flip assembly includes a plurality of hanging rods that can be hooked with waste copper wires.

2. The smelting device for recycling scrap copper according to claim 1, characterized in that: The gas outlet end of the smelting furnace (1) is connected to a connecting pipe (2), the connecting pipe (2) is connected to a heat-conducting cover (3), the connecting pipe (2) is connected to the bottom of the preheating furnace (4) through the heat-conducting cover (3), and the length and width of the top end of the heat-conducting cover (3) are respectively adapted to the length and diameter of the preheating furnace (4).

3. The smelting device for recycling scrap copper according to claim 2, characterized in that: A communication port is provided at the bottom of the preheating furnace (4), a heat conducting plate (10) is fixedly provided on the communication port, the heat conducting cover (3) is connected to the preheating furnace (4) via the heat conducting plate (10), and a plurality of second heat conducting holes (12) are evenly provided on the heat conducting plate (10).

4. The smelting device for recycling scrap copper according to claim 3, characterized in that: A plurality of first heat conducting holes (11) are evenly formed on one end of the heat conducting plate (10) away from the feed end of the honeycomb tube (9), and the rest of the heat conducting plate (10) is second heat conducting holes (12). The first heat conducting holes (11) are conical structures with a top inner diameter smaller than a bottom inner diameter. The heat conducting plate (10) is a circular structure, and the inner diameter of the first heat conducting holes (11) is smaller than the inner diameter of the second heat conducting holes (12). The pot cover (6) has a conical structure, and the end of the pot cover (6) with a larger radius is the feed end.

5. The smelting device for recycling scrap copper according to claim 1, characterized in that: A servo motor (5) is provided on the side of the preheating furnace (4) away from the feed end, the output end of the servo motor (5) is connected to the honeycomb tube (9), and a sealing ring (13) is fixedly provided in the feed end of the honeycomb tube (9).

6. The smelting device for recycling scrap copper according to claim 5, characterized in that: The inner wall of the sealing ring (13) is a truncated cone-shaped structure, and the structure of the sealing plate (16) is compatible with the inner wall of the sealing ring (13).

7. The smelting device for recycling scrap copper according to claim 6, characterized in that: The driving structure comprises a driving rod (14) fixedly mounted on the inner side of the sealing ring (13), the driving rod (14) being in an L-shaped structure, a driving block (15) fixedly mounted on the top end of one side of the sealing plate (16) located inside the honeycomb tube (9), and the driving rod (14) contacts the driving block (15) to drive the sealing plate (16) to rotate.

8. The smelting device for recycling scrap copper according to claim 7, characterized in that: The reverse rotation assembly (20) comprises a first bevel gear (201), a second bevel gear (202) and a third bevel gear (203); two ends of the second bevel gear (202) are respectively meshed with the first bevel gear (201) and the third bevel gear (203); the second bevel gear (202) is rotationally connected to the pot cover (6); the first bevel gear (201) is fixedly connected to the center position of the sealing plate (16); the third bevel gear (203) is fixedly connected to the rotating rod (204); one end of the rotating rod (204) is rotationally connected to the pot cover (6); the other end of the rotating rod (204) passes through the third bevel gear (203), the first bevel gear (201) and the sealing plate (16) in sequence, and then extends to the inside of the honeycomb tube (9) and is connected to the turnover assembly; the sealing plate (16) and the first bevel gear (201) are rotationally connected to the rotating rod (204).

9. The smelting device for recycling scrap copper according to claim 8, characterized in that: The flip assembly comprises a mounting plate (17), the mounting plate (17) being fixedly connected to a rotating rod (204), a plurality of hanging rods being fixedly arranged on a side of the mounting plate (17) away from the rotating rod (204), the hanging rod comprising a flip rod (18), one end of the flip rod (18) away from the mounting plate (17) being fixedly provided with a plurality of barbs (19) in a circular array, the barbs (19) being in a U-shaped structure, and the transverse ends of the plurality of barbs (19) being parallel to the end faces of the flip rods (18) forming a pushing surface for pushing the waste copper wire into the depth of the honeycomb tube (9).

10. A method for smelting using the smelting device for recycling scrap copper according to any one of claims 1 to 9, characterized in that: The steps include: S1, placing the scrap copper wire crushed by the crushing device into a smelting furnace (1) for smelting, and the high-temperature flue gas generated by the smelting enters the preheating furnace (4) through the connecting pipe (2) and the heat-conducting cover (3); S2, placing the waste copper wire to be preheated into the honeycomb tube (9), and in the process of closing the pot cover (6), the waste copper wire is pushed into the depth of the honeycomb tube (9) by the pushing surface of the barb (19), and then the smelting furnace (1) and the honeycomb tube (9) are closed by the pot cover (6), and then fixed by the lock buckles (7) arranged around the pot cover (6); S3, starting the servo motor (5) to drive the honeycomb tube (9) to rotate, the rotation of the honeycomb tube (9) drives the sealing plate (16) to rotate through the driving structure, and then drives the flip assembly to rotate in the opposite direction through the reverse rotation assembly (20), so that the waste copper wire gradually hangs on the barb (19) and rotates in the opposite direction to the honeycomb tube (9) along with the barb (19); S4. After being preheated, the waste copper wire becomes soft and shrinks and then hangs on the barb (19). At this time, the pressure relief valve on the preheating furnace (4) is opened, and then the pot cover (6) is opened. During the process of opening the pot cover (6), the first heat conduction hole (11) will produce high-temperature flue gas with a flow rate greater than that of the second heat conduction hole (12), and the waste copper wire at the end of the honeycomb tube (9) will be blown toward the feeding end of the honeycomb tube (9). During the process of opening the pot cover (6), the waste copper wire is taken out along with the barb (19), and transferred to the crushing device for crushing, and then transferred to the smelting furnace (1) for smelting.

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