Energy-saving waste aluminum material recovery smelting furnace

Abstract

The invention discloses an energy-saving waste aluminum material recovery smelting furnace which comprises a fixed bottom plate, a preheating cylinder and a smelting furnace body, a smelting crucible is arranged in the smelting furnace body, a heating coil and a magnet yoke mechanism are arranged on the outer side of the smelting furnace body, an electromagnetic induction heating mode is adopted, the heat efficiency is high, and no combustion loss exists. A preheating hopper and a feeding sliding table are arranged in the system, closed preheating and precise feeding of waste aluminum materials are achieved through an electric push rod, waste aluminum materials are preheated by flue gas waste heat through a recycling preheating pipe, the heat energy utilization rate is remarkably increased, and the system is provided with an electrostatic dust collection box and an economizer, so that flue gas purification and waste heat gradient utilization are achieved; the smelting furnace body tilts and turns over by driving a gear rack mechanism through a hydraulic self-locking air cylinder, and molten aluminum is conveniently guided out. The device integrates the functions of electromagnetic heating, waste heat recovery, automatic feeding, environment-friendly treatment and the like, has the advantages of low energy consumption, high efficiency, good environment-friendly performance and the like, and is suitable for green and efficient recovery of waste aluminum materials.

Description

Technical Field

[0001] This invention relates to the field of waste aluminum recycling technology, and in particular to an energy-saving waste aluminum recycling smelting furnace. Background Technology

[0002] Waste aluminum recycling refers to the recycling and reuse of waste aluminum resources. After recycling, the waste aluminum is sorted, dismantled, and impurities are removed. It can then be regenerated using thermal methods and purified through technologies such as liquefaction separation and smelting. This enables the circular recycling of aluminum resources. The liquefaction separation of waste aluminum is the future development direction for recycling metallic aluminum. It combines the pretreatment of waste aluminum scraps with remelting and casting, which shortens the process flow, minimizes air pollution, and greatly improves the recovery rate of net metal. For this purpose, a waste aluminum recycling smelting furnace is required.

[0003] Traditional scrap aluminum recycling and smelting furnaces use fuels such as natural gas, coal gas, or heavy oil to heat the furnace chamber and melt the scrap aluminum. However, this heating method not only produces a lot of combustion exhaust gas, which is not environmentally friendly, but also makes it difficult to ensure complete combustion of fuel, resulting in low thermal efficiency and energy waste. The heating air during the smelting process is also directly discharged and diffused, resulting in high heat loss and low heat recovery efficiency. Therefore, those in the field urgently need an energy-saving scrap aluminum recycling and smelting furnace. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving waste aluminum recycling and smelting furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an energy-saving waste aluminum recycling smelting furnace, comprising a fixed bottom plate, a preheating cylinder, and a smelting furnace body. A first mounting bracket is welded to the top surface of the fixed bottom plate, and a mounting shaft is welded to the first mounting bracket. A tilting rotating shaft is mounted on the mounting shaft. Two tilting rotating shafts are welded to the side walls of the smelting furnace body. A smelting crucible is fixedly installed inside the smelting furnace body, and a heating coil is sleeved on the outside of the smelting crucible. A magnetic yoke mechanism is installed outside the heating coil. A first heat-insulating refractory layer is provided between the magnetic yoke mechanism and the inner wall of the smelting furnace body. A preheating cylinder is provided on the smelting furnace body, and a second heat-insulating refractory layer is fixedly installed on the inner wall of the preheating cylinder. The side walls of the preheating cylinder... Several first fixing blocks are welded to the top, and several second fixing blocks are welded to the side wall of the smelting furnace. The first fixing blocks and the second fixing blocks are connected and fixed by fixing bolts. An electric push rod is bolted to the center of the top of the preheating cylinder, and a lifting mounting plate is bolted to the output end of the electric push rod. A connecting rod is welded to the center of the bottom surface of the lifting mounting plate, and a feeding slide is welded to the bottom end of the connecting rod. A preheating hopper is welded to the bottom of the preheating cylinder cavity, and a feeding port is opened at the bottom of the preheating hopper cavity. One end of a recovery preheating pipe is connected to one side of the preheating hopper cavity, and the other end of the recovery preheating pipe is connected to the cavity of the smelting crucible. A first solenoid valve and a second solenoid valve are respectively installed on the recovery preheating pipe.

[0006] As a further description of the above technical solution: A second mounting bracket is welded to one side of the top surface of the first mounting bracket, and an electrostatic precipitator and an economizer are bolted to the second mounting bracket. The output end of the electrostatic precipitator is connected to one end of a connecting pipe, and the other end of the connecting pipe is connected to the input end of the economizer. The output end of the economizer is connected to an exhaust pipe. A first connecting pipe is installed on one side of the inner cavity of the preheating cylinder, and a second connecting pipe is connected to the input end of the electrostatic precipitator. A connecting hose is connected between the first connecting pipe and the second connecting pipe.

[0007] As a further description of the above technical solution: The first mounting frame has symmetrical guide grooves on its top surface, and guide slide plates are embedded in the guide grooves. A drive gear plate is welded to the top surface of the guide slide plate. A drive gear is fixedly installed on the tilting rotation shaft, and the drive gear meshes with the drive gear plate. A fixing plate is welded to one side of the top surface of the first mounting frame, and several hydraulic self-locking cylinders are bolted to the fixing plate. A linkage plate is bolted to the output end of the hydraulic self-locking cylinders. One end of each of the two drive gear plates is welded to the side wall of the linkage plate.

[0008] As a further description of the above technical solution: The inner cavity of the smelting crucible is connected to a refractory castable outlet channel groove that penetrates the side wall of the smelting furnace, and a flow channel valve is installed on the refractory castable outlet channel groove.

[0009] As a further description of the above technical solution: The preheating cylinder is connected to a feed hopper on its side wall, and a feed sealing cover is installed on the feed hopper via a hinge.

[0010] As a further description of the above technical solution: An electromagnetic stirring mechanism is fixedly installed in the center of the bottom surface of the feeding slide by bolts.

[0011] As a further description of the above technical solution: The control panel is fixedly installed on the second mounting bracket, and the control panel is electrically connected to the magnetic yoke mechanism, heating coil, flow valve, electric push rod, electrostatic dust removal box, electromagnetic stirring mechanism and hydraulic self-locking cylinder.

[0012] As a further description of the above technical solution: The central axes of the smelting furnace body, smelting crucible, preheating cylinder, lifting mounting plate, feeding slide, preheating hopper and feeding port are on the same straight line.

[0013] As a further description of the above technical solution: The cross-sectional shape of the guide groove and the guide slide plate is T-shaped.

[0014] As a further description of the above technical solution: The recycling preheating pipe is fixedly installed with an interception net at one end of the preheating hopper cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a preheating cylinder and a melting furnace body. It uses electromagnetic induction heating, which eliminates combustion heat loss, improves heating efficiency, reduces power consumption in smelting waste aluminum, and preheats the waste aluminum through the recovery preheating pipe, effectively improving thermal energy utilization and resulting in significant overall energy savings.

[0016] 2. This invention employs a lifting mounting plate, a preheating hopper, and a feeding slide. An electric push rod is used in conjunction with the feeding slide to achieve sealed preheating and precise feeding of waste aluminum, preventing heat leakage. At the same time, an electrostatic dust collector is combined with an economizer to treat flue gas, allowing waste heat to be utilized in stages and emissions to meet environmental protection standards.

[0017] 3. The present invention employs a first mounting bracket, a hydraulic self-locking cylinder, a drive gear, and a drive rack. The hydraulic self-locking cylinder, in conjunction with the drive gear and drive rack, drives the smelting furnace body to tilt, ensuring stable and leak-free aluminum molten metal output, making it more convenient and safer to use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention; Figure 2 This is a front view of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention; Figure 3 This is a top view of the first mounting frame of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention; Figure 4 The present invention proposes Figure 1 Enlarged view of point A; Figure 5 The present invention proposes Figure 1 Enlarged view of point B; Figure 6 The present invention proposes Figure 1 Enlarged view of point C; Figure 7 The present invention proposes Figure 2 Enlarged view of point D; Figure 8 This is a three-dimensional view of the preheating hopper of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention; Figure 9 This is a perspective view of the feeding slide of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention; Figure 10 This is a perspective view of the drive gear plate of the energy-saving waste aluminum recycling and smelting furnace proposed in this invention.

[0020] Legend: 1. Preheating cylinder; 2. Feed sealing cover; 3. Feed hopper; 4. Preheating hopper; 5. Flow channel valve; 6. Refractory castable outlet flow channel groove; 7. Fixed base plate; 8. Smelting furnace body; 9. Smelting crucible; 10. Electromagnetic stirring mechanism; 11. First mounting bracket; 12. Fixed plate; 13. Hydraulic self-locking cylinder; 14. Second mounting bracket; 15. Exhaust pipe; 16. Economizer; 17. Connecting pipe; 18. Electrostatic dust collector; 19. Second connecting pipe; 20. Connecting hose; 21. First connecting pipe; 22. Lifting mounting plate; 23. Electric push rod; 24. Drive gear plate; 25. Linkage plate; 26. Control panel; 27. Mounting shaft bracket; 28. Drive gear; 29. ​​Tilting rotation shaft; 30. Guide slide; 31. First heat insulation and fireproof layer; 32. Magnetic yoke mechanism; 33. Heating coil; 34. Feed slide; 35. Recovery preheating pipe; 36. First solenoid valve; 37. Second solenoid valve; 38. Second heat insulation and fireproof layer; 39. First fixing block; 40. Second fixing block; 41. Fixing bolt; 42. Guide slide plate; 43. Feed inlet; 44. Connecting rod; 45. Interception net. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in the invention can be understood according to the specific circumstances: Please refer to Figures 1 to 10As shown, the energy-saving waste aluminum recycling smelting furnace includes a fixed bottom plate 7, a preheating cylinder 1, and a smelting furnace body 8. A first mounting bracket 11 is welded to the top surface of the fixed bottom plate 7, and a mounting shaft bracket 27 is welded to the first mounting bracket 11. A tilting rotating shaft 29 is mounted on the mounting shaft bracket 27. Two tilting rotating shafts 29 are welded to the side walls of the smelting furnace body 8. A smelting crucible 9 is fixedly installed inside the smelting furnace body 8, and a heating coil 33 is sleeved on the outside of the smelting crucible 9. A magnetic yoke mechanism 32 is installed outside the heating coil 33. A first heat-insulating refractory layer 31 is provided between the magnetic yoke mechanism 32 and the inner wall of the smelting furnace body 8. A preheating cylinder 1 is provided on the smelting furnace body 8, and a second heat-insulating refractory layer 38 is fixedly installed on the inner wall of the preheating cylinder 1. Several first fixing blocks are welded to the side wall of the preheating cylinder 1. 39. Several second fixing blocks 40 are welded to the side wall of the smelting furnace body 8. The first fixing block 39 and the second fixing block 40 are connected and fixed by fixing bolts 41. An electric push rod 23 is fixedly installed at the center of the top of the preheating cylinder 1. The output end of the electric push rod 23 is bolted to the lifting mounting plate 22. A connecting rod 44 is welded to the center of the bottom surface of the lifting mounting plate 22. A feeding slide 34 is welded to the bottom end of the connecting rod 44. A preheating hopper 4 is welded to the bottom of the inner cavity of the preheating cylinder 1. A feeding port 43 is opened at the bottom of the inner cavity of the preheating hopper 4. One end of the recovery preheating pipe 35 is connected to one side of the inner cavity of the preheating hopper 4. The other end of the recovery preheating pipe 35 is connected to the inner cavity of the smelting crucible 9. A first solenoid valve 36 and a second solenoid valve 37 are respectively installed on the recovery preheating pipe 35.

[0023] Please refer to Figure 1 and Figure 2 As shown, a second mounting bracket 14 is welded to one side of the top surface of the first mounting bracket 11, and an electrostatic precipitator 18 and an economizer 16 are bolted to the second mounting bracket 14. The output end of the electrostatic precipitator 18 is connected to one end of a connecting pipe 17, and the other end of the connecting pipe 17 is connected to the input end of the economizer 16. The output end of the economizer 16 is connected to an exhaust pipe 15. A first connecting pipe 21 is installed on one side of the inner cavity of the preheating cylinder 1, and a second connecting pipe 19 is connected to the input end of the electrostatic precipitator 18. A connecting hose 20 is connected between the first connecting pipe 21 and the second connecting pipe 19.

[0024] Please refer to Figure 2 , Figure 3 and Figure 7As shown, the top surface of the first mounting bracket 11 is symmetrically provided with guide grooves 30, and guide slide plates 42 are embedded in the guide grooves 30. A drive gear plate 24 is welded to the top surface of the guide slide plate 42. A drive gear 28 is fixedly installed on the tilting rotation shaft 29, and the drive gear 28 meshes with the drive gear plate 24. A fixing plate 12 is welded to one side of the top surface of the first mounting bracket 11, and several hydraulic self-locking cylinders 13 are bolted to the fixing plate 12. A linkage plate 25 is bolted to the output end of the hydraulic self-locking cylinder 13. One end of each of the two drive gear plates 24 is welded to the side wall of the linkage plate 25.

[0025] Please refer to Figure 1 and Figure 2 As shown, a refractory castable outlet channel 6 is connected to one side of the inner cavity of the melting crucible 9, which penetrates the side wall of the melting furnace body 8, and a channel valve 5 is installed on the refractory castable outlet channel 6.

[0026] Please refer to Figure 1 and Figure 2 As shown, the preheating cylinder 1 is connected to the side wall of the feed hopper 3, and the feed hopper 3 is connected to the feed sealing cover 2 by a hinge.

[0027] Please refer to Figure 1 As shown, an electromagnetic stirring mechanism 10 is fixedly installed in the center of the bottom surface of the feeding slide 34 by bolts.

[0028] Please refer to Figure 2 As shown, a control panel 26 is fixedly installed on the second mounting bracket 14, and the control panel 26 is electrically connected to the magnetic yoke mechanism 32, heating coil 33, flow channel valve 5, electric push rod 23, electrostatic dust removal box 18, electromagnetic stirring mechanism 10 and hydraulic self-locking cylinder 13.

[0029] Please refer to Figure 1 and Figure 2 As shown, the central axes of the smelting furnace body 8, smelting crucible 9, preheating cylinder 1, lifting mounting plate 22, feeding slide 34, preheating hopper 4, and feeding port 43 are on the same straight line.

[0030] Please refer to Figure 7 As shown, the cross-sectional shape of the guide groove 30 and the guide slide plate 42 is T-shaped.

[0031] Please refer to Figure 5 As shown, the recycling preheating pipe 35 is located at one end of the preheating hopper 4 and is fixedly installed with an intercepting net 45.

[0032] Working Principle: This invention employs a preheating cylinder 1 and a melting furnace body 8. A melting crucible 9 is fixedly installed inside the melting furnace body 8, and a heating coil 33 is sleeved on the outside of the melting crucible 9. A magnetic yoke mechanism 32 is installed outside the heating coil 33. A first heat-insulating refractory layer 31 is provided between the magnetic yoke mechanism 32 and the inner wall of the melting furnace body 8. A refractory castable outlet channel 6, penetrating the side wall of the melting furnace body 8, is connected to one side of the inner cavity of the melting crucible 9. A flow channel valve 5 is installed on the refractory castable outlet channel 6. The magnetic yoke mechanism 32 and the heating coil 33 can electromagnetically induction heat and melt the processed waste aluminum material placed in the melting crucible 9, resulting in no combustion loss, higher heating efficiency, and shorter melting time. The first heat-insulating refractory layer... Layer 31 reduces heat loss through outward radiation. On the other hand, a preheating cylinder 1 is provided on the smelting furnace body 8, and a second heat-insulating refractory layer 38 is fixedly installed on the inner wall of the preheating cylinder 1. Several first fixing blocks 39 are welded to the side wall of the preheating cylinder 1, and several second fixing blocks 40 are welded to the side wall of the smelting furnace body 8. The first fixing blocks 39 and the second fixing blocks 40 are connected and fixed by fixing bolts 41, thus fixing the preheating cylinder 1 to the top of the smelting furnace body 8. An electric push rod 23 is bolted to the center of the top of the preheating cylinder 1, and a lifting mounting plate 22 is bolted to the output end of the electric push rod 23. A connecting rod 44 is welded to the center of the bottom surface of the lifting mounting plate 22, and a feeding slide 34 is welded to the bottom end of the connecting rod 44. A preheating hopper 4 is welded to the bottom of the inner cavity of the preheating cylinder 1, and a feed inlet 43 is opened at the bottom of the inner cavity of the preheating hopper 4. A feed slide 34 is inserted into the feed inlet 43. The side wall of the preheating cylinder 1 is connected to the feed hopper 3, and a feed sealing cover 2 is installed on the feed hopper 3 via a hinge. In use, the worker can open the feed sealing cover 2 to introduce a batch of processed waste aluminum into the inner cavity of the preheating cylinder 1, and then close the feed sealing cover 2. At this time, the waste aluminum falls into the inner cavity of the preheating hopper 4, but due to the presence of the feed slide 34, it will not fall into the melting crucible 9. One side of the inner cavity of the preheating hopper 4 is connected to one end of a recovery preheating pipe 35, and the other end of the recovery preheating pipe 35 is connected to the inner cavity of the melting crucible 9. The recovery preheating pipe 35 is equipped with... Equipped with a first solenoid valve 36 and a second solenoid valve 37, when the smelting crucible 9 heats and melts the previous batch of scrap aluminum material, the user can open the first solenoid valve 36 and the second solenoid valve 37 through the control panel 26. The heating air and flue gas generated during the smelting process can enter the inner cavity of the preheating hopper 4 through the recovery preheating pipe 35. When it comes into contact with the scrap aluminum material in the preheating hopper 4 through the interception net 45, it can preheat the scrap aluminum material, thereby realizing the recovery and utilization of the residual heat in the heating air or flue gas, further reducing the loss and waste of heat energy, and making it more energy-efficient to use. The top surface of the fixed base plate 7 is welded with a first mounting bracket 11, and a mounting shaft bracket 27 is welded on the first mounting bracket 11. A tilting rotation shaft 29 is installed on the mounting shaft bracket 27.The tilting and rotating shaft 29 is welded to the side walls of both sides of the smelting furnace body 8. A second mounting bracket 14 is welded to one side of the top surface of the first mounting bracket 11, and an electrostatic precipitator 18 and an economizer 16 are bolted to the second mounting bracket 14. The output end of the electrostatic precipitator 18 is connected to one end of a connecting pipe 17, and the other end of the connecting pipe 17 is connected to the input end of the economizer 16. The output end of the economizer 16 is connected to an exhaust pipe 15. A first connecting pipe 21 is installed on one side of the inner cavity of the preheating cylinder 1, while a second connecting pipe 19 is connected to the input end of the electrostatic precipitator 18. A connecting hose 20 connects the first connecting pipe 21 and the second connecting pipe 19, so that the flue gas can pass through after heating the scrap aluminum. The waste aluminum enters the electrostatic precipitator 18 through the first connecting pipe 21, connecting hose 20, and second connecting pipe 19 for dust removal. Then it enters the economizer 16 to recover the remaining waste heat, and finally exits through the exhaust pipe 15. This greatly reduces the waste of waste heat in the flue gas and is more environmentally friendly, making it suitable for energy-saving and green recycling of waste aluminum. Furthermore, this invention employs a lifting mounting plate 22, a preheating hopper 4, and a feeding slide 34. As described above, the output end of the electric push rod 23 is connected to the lifting mounting plate 22. After the waste aluminum in the preheating hopper 4 is preheated, the user can activate the electric push rod 23 via the control panel 26 to push the lifting mounting plate 22 downwards. The connecting rod 44 and the feeding slide 34 then move downwards accordingly, allowing the preheated waste aluminum to be processed. The material slides down the inclined surface of the feeding slide 34 into the melting crucible 9 for heating and melting. At this time, the lifting mounting plate 22 descends to below the discharge port of the feeding hopper 3 and the first connecting pipe 21, which prevents the heat in the melting crucible 9 from directly escaping to the outside through the feeding hopper 3 and the first connecting pipe 21, further reducing unnecessary heat loss. An electromagnetic stirring mechanism 10 is fixedly installed in the center of the bottom surface of the feeding slide 34 by bolts. When the electromagnetic stirring mechanism 10 is located in the inner cavity of the melting crucible 9, it can stir the molten metal non-contactly by electromagnetic force, thereby improving the uniformity of the melt temperature and the consistency of the composition, reducing oxidation loss, avoiding local overheating, reducing power consumption, and making it more energy-efficient. Furthermore, this invention employs a first mounting bracket 11 and a hydraulic self-locking mechanism. The system comprises a cylinder 13, a drive gear 28, and a drive gear plate 24. A first mounting bracket 11 has a symmetrically shaped guide groove 30 on its top surface, within which a guide slide plate 42 is fitted. The top surface of the guide slide plate 42 is welded to the drive gear plate 24. A drive gear 28 is fixedly mounted on a tilting rotation shaft 29, meshing with the drive gear plate 24. On the other hand, a fixing plate 12 is welded to one side of the top surface of the first mounting bracket 11, and several hydraulic self-locking cylinders 13 are bolted to the fixing plate 12. A connecting plate 25 is bolted to the output end of each hydraulic self-locking cylinder 13. One end of each of the two drive gear plates 24 is welded to the side wall of the connecting plate 25. After the smelting of the scrap aluminum is completed, the user can open the flow channel valve 5.Then, by activating the hydraulic self-locking cylinder 13 via the control panel 26, the connecting plate 25 moves, causing the drive gear plate 24 to slide along the guide groove 30. Driven by the drive gear plate 24 and the drive gear 28, the smelting furnace body 8 and the preheating cylinder 1 tilt and rotate. At this time, opening the flow channel valve 5 allows the molten aluminum in the smelting crucible 9 to be discharged through the refractory castable outlet flow channel 6 to an external container such as a transfer ladle or casting ladle for further processing. The operation is simple, highly automated, and convenient.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy-saving waste aluminum recycling and smelting furnace, comprising a fixed bottom plate (7), a preheating cylinder (1), and a smelting furnace body (8), characterized in that, The top surface of the fixed base plate (7) is welded with a first mounting bracket (11), and a mounting shaft bracket (27) is welded on the first mounting bracket (11). A tilting rotating shaft (29) is mounted on the mounting shaft bracket (27). The two tilting rotating shafts (29) are welded to the side walls of the smelting furnace body (8). A smelting crucible (9) is fixedly installed in the inner cavity of the smelting furnace body (8). A heating coil (33) is sleeved on the outside of the smelting crucible (9). A magnetic yoke mechanism (32) is installed on the outside of the heating coil (33). A first heat-insulating refractory layer (31) is provided between the magnetic yoke mechanism (32) and the inner wall of the smelting furnace body (8). A preheating cylinder (1) is provided on the smelting furnace body (8). A second heat-insulating refractory layer (38) is fixedly installed on the inner wall of the preheating cylinder (1). Several first fixing blocks (39) are welded on the side wall of the preheating cylinder (1). Several first fixing blocks (39) are welded on the side wall of the smelting furnace body (8). A second fixing block (40) is installed. The first fixing block (39) and the second fixing block (40) are connected and fixed by fixing bolts (41). An electric push rod (23) is fixedly installed at the center of the top of the preheating cylinder (1). A lifting mounting plate (22) is bolted to the output end of the electric push rod (23). A connecting rod (44) is welded to the center of the bottom surface of the lifting mounting plate (22). A feeding slide (34) is welded to the bottom end of the connecting rod (44). A preheating hopper (4) is welded to the bottom of the inner cavity of the preheating cylinder (1). A feeding port (43) is opened at the bottom of the inner cavity of the preheating hopper (4). One end of a recovery preheating pipe (35) is connected to one side of the inner cavity of the preheating hopper (4). The other end of the recovery preheating pipe (35) is connected to the inner cavity of the melting crucible (9). A first solenoid valve (36) and a second solenoid valve (37) are respectively installed on the recovery preheating pipe (35).

2. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, A second mounting bracket (14) is welded to one side of the top surface of the first mounting bracket (11), and an electrostatic dust collector (18) and an economizer (16) are bolted to the second mounting bracket (14). The output end of the electrostatic dust collector (18) is connected to one end of a connecting pipe (17), and the other end of the connecting pipe (17) is connected to the input end of the economizer (16). The output end of the economizer (16) is connected to an exhaust pipe (15). A first connecting pipe (21) is installed on one side of the inner cavity of the preheating cylinder (1), and a second connecting pipe (19) is connected to the input end of the electrostatic dust collector (18). A connecting hose (20) is connected between the first connecting pipe (21) and the second connecting pipe (19).

3. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, The first mounting bracket (11) has a guide groove (30) symmetrically opened on its top surface, and a guide slide plate (42) is embedded in the guide groove (30). A drive tooth plate (24) is welded to the top surface of the guide slide plate (42). A drive gear (28) is fixedly installed on the tilting rotation shaft (29), and the drive gear (28) meshes with the drive tooth plate (24). A fixing plate (12) is welded to one side of the top surface of the first mounting bracket (11), and several hydraulic self-locking cylinders (13) are bolted to the fixing plate (12). A linkage plate (25) is bolted to the output end of the hydraulic self-locking cylinder (13). One end of each of the two drive tooth plates (24) is welded to the side wall of the linkage plate (25).

4. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, The inner cavity of the smelting crucible (9) is connected to a refractory castable outlet channel groove (6) that penetrates the side wall of the smelting furnace body (8), and a channel valve (5) is installed on the refractory castable outlet channel groove (6).

5. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, The preheating cylinder (1) has a feed hopper (3) connected to its side wall, and a feed sealing cover (2) is installed on the feed hopper (3) by means of a hinge.

6. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, An electromagnetic stirring mechanism (10) is fixedly installed in the center of the bottom surface of the feeding slide (34) by bolts.

7. The energy-saving waste aluminum recycling and smelting furnace according to claim 2, characterized in that, The second mounting bracket (14) is fixedly mounted with a control panel (26), and the control panel (26) is electrically connected to the magnetic yoke mechanism (32), heating coil (33), flow channel valve (5), electric push rod (23), electrostatic dust removal box (18), electromagnetic stirring mechanism (10) and hydraulic self-locking cylinder (13).

8. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, The central axes of the smelting furnace body (8), smelting crucible (9), preheating cylinder (1), lifting mounting plate (22), feeding slide (34), preheating hopper (4) and feeding port (43) are on the same straight line.

9. The energy-saving waste aluminum recycling and smelting furnace according to claim 3, characterized in that, The cross-sectional shape of the guide groove (30) and the guide slide plate (42) is T-shaped.

10. The energy-saving waste aluminum recycling and smelting furnace according to claim 1, characterized in that, The recycling preheating pipe (35) is located at one end of the preheating hopper (4) and is fixedly installed with an intercepting net (45).

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