A waste aluminum product recycling mechanism

Abstract

The application discloses a kind of waste aluminium product recovery processing mechanism, it is related to waste metal recovery technical field, the mechanism includes smelting furnace, smelting furnace upper portion is equipped with processing cover body and broken material feeding cover, inside is equipped with screening plate, aluminium ash separation body and smelting disc in sequence;Furnace body is equipped with heat guide pipe driving rotating component, rotating pipe is rotated and reciprocates up and down, so that screening plate and aluminium ash separation body do centrifugal and small amplitude opening and closing motion.External negative pressure component absorbs aluminium ash and is sent to separation body area at feeding place, gas is introduced into aluminium ash separation body by rotating pipe, and aluminium ash is guided into furnace bottom by cooperating with ash discharge pipe.The application integrates screening, aluminium ash collection and smelting ash removal, utilizes waste heat driven structure to operate, reduces aluminium ash mixture by centrifugal classification and air floatation separation, effectively improves the purity of secondary aluminium, reduces dust pollution, and the structure is compact and energy-efficient.

Description

Technical Field

[0001] This invention relates to the field of waste metal recycling technology, specifically to a waste aluminum product recycling and processing facility. Background Technology

[0002] Aluminum is a relatively important metallic material in modern industry. The treatment of waste aluminum products is an important way to recycle aluminum materials. The general process of recycling waste aluminum products is as follows: crushing, separating, and smelting. Among them, separation and smelting are the pretreatment processes for the aluminum recovered after crushing the waste aluminum products.

[0003] Aluminum ash is mainly generated during the smelting process. A small amount of primary aluminum ash (aluminum powder produced by the shedding of the oxide layer from aluminum products and friction) is generated during the pretreatment and crushing stage. In existing technology, the pretreatment separation is completely separated from the smelting process. When using existing screening equipment, the separation stage only completes material classification; the separated primary aluminum ash needs to be transported separately to the smelting stage. This process is cumbersome and easily generates flying aluminum ash. When crushing waste aluminum products, the oxide layer on the surface of the aluminum products, the attached dust impurities, and the fine aluminum powder generated by the mechanical friction between aluminum chips and equipment (such as crushers and screens) during the crushing process will form a small amount of primary aluminum ash. Primary aluminum ash, which is mixed into the crushed tailings, is produced when waste aluminum is crushed, sorted, and decontaminated before entering the smelting furnace. The molten aluminum comes into contact with air at high temperatures (700-750℃), and an oxidation reaction occurs on the surface to generate Al2O3. At the same time, dissolved gases (such as hydrogen) in the molten aluminum are released and mix with oxide impurities to form a large amount of primary aluminum ash. Primary aluminum ash is easily mixed with aluminum material and enters the smelting furnace, which aggravates the generation of primary aluminum ash. Thus, the aluminum ash generated during the separation process and the aluminum generated during the smelting process are mixed into the aluminum material, affecting the purity of recycled aluminum. Therefore, we propose a waste aluminum product recycling and processing mechanism. Summary of the Invention

[0004] The purpose of this invention is to provide a waste aluminum product recycling and processing facility to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste aluminum product recycling and processing mechanism, comprising a smelting furnace, characterized in that: a processing hood is installed on the top of the smelting furnace, a scrap feeding hood is installed on the top of the processing hood, a screening plate is provided inside the processing hood, and a discharge port communicating with the screening plate is installed on the outside of the processing hood; a smelting pan is provided inside the smelting furnace at the bottom of the screening plate, and an aluminum ash separator is installed on the top of the smelting pan; an ash discharge pipe guiding the aluminum ash to the bottom of the smelting furnace is connected to the top of the smelting pan; the aluminum ash separator includes multiple elastic bends, and multiple air flotation ports are distributed on the elastic bends; a negative pressure system is provided outside the smelting furnace. The pressure component includes a negative pressure suction pipe and a gas discharge pipe. The negative pressure suction pipe is located in the crushed material feeding hood and is used to absorb aluminum ash from the crushed material under negative pressure. The absorbed aluminum ash enters the aluminum ash separator. A rotating component is provided on the inner wall of the processing hood. A heat guiding pipe is connected to the smelting furnace body to guide the heat in the smelting furnace to drive the rotating component. A rotating pipe is provided in the middle of the rotating component. The screening plate and the aluminum ash separator are sleeved on the rotating pipe. The gas discharge pipe is connected to the top of the rotating pipe. The gas drawn by the negative pressure component is discharged from the gas discharge pipe along the rotating pipe to inflate the elastic bend, and then the aluminum ash in the smelting is lifted at the air flotation port and enters the bottom of the smelting furnace along the ash discharge pipe.

[0006] Preferably, the negative pressure component includes a vacuum pump, the top of which is connected to a negative pressure suction pipe, and the other end of which is connected to a gas discharge pipe. A fixed bracket is installed on the top of the crushed material feeding hood, and a negative pressure hood is installed on the top of the fixed bracket. An adsorption horn cover is provided at the bottom of the negative pressure hood. The negative pressure suction pipe is connected to the side wall of the negative pressure hood. A middle pipe is provided inside the negative pressure hood. The outside of the middle pipe is a one-way breathable membrane. The vacuum pump creates a negative pressure state inside the middle pipe through the negative pressure suction pipe along the one-way breathable membrane. The middle pipe is connected to the adsorption horn cover, and a Y-shaped branch pipe is connected to the outside of the middle pipe. Two ash inlets are opened on the top of the melting pan, and the bottom ends of the Y-shaped branch pipe are connected to the ash inlets.

[0007] Preferably, an elastic cover is installed on the top of the negative pressure hood, an airbag is installed on the top of the intermediate tube, and multiple curved air tubes are installed on the outside of the airbag, with one end of each curved air tube passing through the elastic cover and distributed inside the negative pressure hood.

[0008] Preferably, the inlet of the shredded material feeding hood is provided with an installation ring, and multiple distributing rollers are installed in the installation ring. The distributing roller located at the center of the installation ring is provided with a break area, and a protective sleeve installed outside the rotating tube is provided at the break area.

[0009] Preferably, the aluminum ash separator further includes multiple loop-shaped connecting pipes, which are made of elastic metal. The multiple loop-shaped connecting pipes and multiple elastic bends form a grid-like screening body. The outside of the screening body is provided with a rotating ring that is rotatably connected to the inner wall of the melting pan. The middle of the screening body is provided with a fixed ring body. The inside of the fixed ring body is a cavity. The fixed ring body is provided with multiple air inlets, which are connected to the openings of the elastic bends. The bottom of the rotating pipe is installed on the fixed ring body, and the gas in the rotating pipe enters the elastic bend through the air inlets.

[0010] Preferably, the inner wall of the processing hood is provided with two limiting grooves, the rotating component includes a rotating ring body disposed inside the processing hood body, sealing baffles rotating in the limiting grooves are installed at the top and bottom of the rotating ring body, a bearing body is installed on the rotating tube, and multiple fixing plates are connected between the bearing body and the rotating ring body, a rotating fan blade is provided on the outer ring of the rotating ring body, and a heat guiding pipe guides the heat in the melting furnace to the outside of the rotating fan blade, thereby stimulating the rotating ring body to rotate.

[0011] Preferably, the rotating tube has a bidirectional threaded section on its exterior, and the bearing body is fitted onto the bidirectional threaded section.

[0012] Preferably, the bottom of the smelting pan is provided with a discharge port, and the discharge port is provided with a bent pipe for discharging molten aluminum.

[0013] Preferably, the mesh diameter of the screening plate is larger than the mesh diameter of the aluminum ash separator, and a waste discharge hood is provided at the discharge port, with a covering curtain outside the waste discharge hood.

[0014] Preferably, the lower part of the smelting furnace is provided with a discharge pipe for aluminum ash and fuel, and a sealing door is provided at the inlet of the smelting furnace for the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention integrates crushing and screening, negative pressure collection of aluminum ash, high-temperature smelting, and aluminum ash separation into one unit, achieving seamless connection between crushing and smelting processes. It eliminates the separate transfer link of aluminum ash, simplifies the process flow, and improves recycling efficiency. It utilizes the waste heat of the smelting furnace itself to drive the rotating parts through the heat guide pipe, eliminating the need for additional power devices, making full use of thermal energy, reducing energy consumption, and making it more energy-efficient and environmentally friendly. This invention uses a rotating tube to drive the screening plate and aluminum ash separator to perform centrifugal rotation and reciprocating opening and closing motions. Combined with the airflow dust-lifting effect of the air flotation port, it can efficiently separate aluminum ash from aluminum material, prevent aluminum ash from mixing into molten aluminum, significantly improve the purity of recycled aluminum, and use a closed structure combined with negative pressure adsorption to suppress aluminum ash flying at the source, reduce dust leakage, improve the working environment, and reduce safety hazards and environmental pressure. The aluminum ash separator of this invention adopts an elastic metal steel structure, which is resistant to high temperature and not easily deformed. It can work stably for a long time in a high-temperature smelting environment, and the overall equipment has high reliability and long service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall side structure of the present invention; Figure 3 This is a schematic diagram of a partial cross-section of the present invention; Figure 4 This is a schematic diagram of the structure after the removal of the processing cover and the waste material disposal cover of the present invention; Figure 5 A schematic diagram of the structure of the enclosure and the waste material disposal area; Figure 6 for Figure 5 A schematic diagram of the structure viewed from below; Figure 7 A schematic diagram of the structure of the smelting furnace and the aluminum ash separator; Figure 8 for Figure 7 Another structural diagram from a different angle; Figure 9 A schematic diagram of the aluminum ash separator and the smelting pan; Figure 10 This is a schematic diagram of the aluminum ash separator structure; Figure 11 for Figure 10 Schematic diagram of the structure after the rotating tube is removed; Figure 12 This is a schematic diagram of the structure at the melting pan. Figure 13 This is a schematic diagram of the rotating component. Figure 14 for Figure 11 A magnified structural diagram of region A in the middle.

[0017] In the diagram: 1. Smelting furnace, 2. Processing hood, 3. Crushed material feeding hood, 4. Screening plate, 5. Smelting pan, 6. Aluminum ash separator, 7. Negative pressure component, 8. Rotating component, 9. Negative pressure hood, 10. Air flotation port, 11. Ash discharge pipe, 12. Heat guiding pipe, 13. Discharge pipe, 14. Sealing door, 15. Discharge port, 16. Limiting groove, 17. Waste discharge hood, 18. Shelter curtain, 19. Fixed bracket, 20. Mounting ring, 21. Distributing roller, 22. Ash inlet, 23. Discharge port, 24. Aluminum outlet bend, 25. Flexible bend, 26. U-shaped connecting pipe, 27. Rotating ring, 28. Fixed ring, 29. Air inlet, 30. Negative pressure suction pipe, 31. Gas discharge pipe, 32. Vacuum pump, 33. Rotating pipe, 34. Rotating ring, 35. Sealing baffle, 36. Bearing body, 37. 38 Fixed plate, 39 Rotating fan blade, 40 Adsorption horn cover, 41 Intermediate tube, 42 Y-shaped branch tube, 43 Elastic cover, 44 Airbag body, 45 Curved air tube, 46 One-way breathable membrane, 47 Protective sleeve, 48 Bidirectional threaded section. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a waste aluminum product recycling and processing mechanism, comprising a smelting furnace 1, a processing hood 2 installed on the top of the smelting furnace 1, a crushed material feeding hood 3 installed on the top of the processing hood 2 for feeding crushed waste aluminum fragments, a screening plate 4 installed inside the processing hood 2, a discharge port 15 connected to the screening plate 4 installed on the outside of the processing hood 2, a waste discharge hood 17 installed at the discharge port 15, and a shielding curtain 18 installed outside the waste discharge hood 17 to prevent dust from overflowing and to discharge large particles of waste after screening.

[0020] Inside the smelting furnace 1, a smelting pan 5 is installed at the bottom of the screening plate 4. An aluminum ash separator 6 is installed on the top of the smelting pan 5. An ash discharge pipe 11 is connected to the top of the smelting pan 5, guiding the separated aluminum ash to the bottom of the smelting furnace 1. The aluminum ash separator 6 includes multiple flexible bends 25 and multiple loop-shaped connecting pipes 26. The loop-shaped connecting pipes 26 are made of elastic metal. The multiple loop-shaped connecting pipes 26 and multiple flexible bends 25 are interconnected to form a grid-like screening body. A rotating ring 27 is installed on the outside of the screening body, and the rotating ring 27 is rotatably connected to the inner wall of the smelting pan 5. A fixed ring 28 is installed in the middle of the screening body. The fixed ring 28 has a hollow internal structure and multiple air inlets 29 are opened on the fixed ring 28. The air inlets 29 are connected to the pipe openings of the flexible bends 25. Multiple air flotation ports 10 are distributed on the flexible bends 25.

[0021] The smelting furnace 1 is equipped with a negative pressure component 7, which includes a vacuum pump 32, a negative pressure suction pipe 30, and a gas discharge pipe 31. The top of the crushed material feeding cover 3 is equipped with a fixed bracket 19, and the top of the fixed bracket 19 is equipped with a negative pressure cover 9. The bottom of the negative pressure cover 9 is equipped with an adsorption horn cover 39. The negative pressure suction pipe 30 is connected to the side wall of the negative pressure cover 9. The inside of the negative pressure cover 9 is equipped with a middle pipe 40, and the outside of the middle pipe 40 is wrapped with a one-way breathable membrane 45. The vacuum pump 32 creates a negative pressure state inside the middle pipe 40 through the negative pressure suction pipe 30 and the one-way breathable membrane 45. The middle pipe 40 is connected to the adsorption horn cover 39, and the outside of the middle pipe 40 is connected to a Y-shaped branch pipe 41. The top of the smelting pan 5 is opened with two ash inlets 22, and the bottom ends of the Y-shaped branch pipe 41 are respectively connected to the ash inlets 22. The negative pressure hood 9 has an elastic cover 42 installed on top, and an airbag 43 installed on top of the middle tube 40. Multiple curved air tubes 44 are installed on the outside of the airbag 43. One end of each curved air tube 44 passes through the elastic cover 42 and is distributed inside the negative pressure hood 9.

[0022] The inlet of the crushed material feeding cover 3 is equipped with an installation ring 20, and multiple material distribution rollers 21 are installed inside the installation ring 20. The material distribution roller 21 located at the center of the installation ring 20 is provided with a disconnection area, and a protective sleeve 46 is provided at the disconnection area. The protective sleeve 46 is installed outside the rotating tube 33 to realize the separation arrangement of the rotating structure and the material distribution structure.

[0023] A rotating component 8 is installed on the inner wall of the processing hood 2. A heat guiding pipe 12 is connected to the furnace body of the smelting furnace 1. The heat guiding pipe 12 draws out the heat inside the smelting furnace 1 to drive the rotating component 8. Two limiting grooves 16 are opened on the inner wall of the processing hood 2. The rotating component 8 includes a rotating ring 34 set inside the processing hood 2. Sealing baffles 35 are installed at the top and bottom of the rotating ring 34, and the sealing baffles 35 are rotatably fitted in the limiting grooves 16. A bearing body 36 is installed on the rotating pipe 33. Multiple fixing plates 37 are connected between the bearing body 36 and the rotating ring 34. A rotating fan blade 38 is set on the outer ring of the rotating ring 34. The heat guiding pipe 12 guides the hot airflow inside the smelting furnace 1 to the outside of the rotating fan blade 38, pushing the rotating fan blade 38 to drive the rotating ring 34 to rotate. A bidirectional threaded section 47 is set on the outside of the rotating pipe 33, and the bearing body 36 is sleeved on the bidirectional threaded section 47. The bottom of the rotating tube 33 is mounted on the fixed ring 28. The internal cavity of the rotating tube 33 is connected to the air inlet 29. The gas discharge tube 31 is connected to the top of the rotating tube 33, so that the gas discharged by the negative pressure component 7 can enter the aluminum ash separator 6 along the rotating tube 33.

[0024] A discharge port 23 is provided at the bottom of the smelting pan 5, and an aluminum outlet bend 24 is provided at the discharge port 23 to discharge the molten aluminum material. A discharge pipe 13 is provided at the bottom of the smelting furnace 1 for the inlet and outlet of aluminum ash and fuel. A sealing door 14 is provided at the inlet of the discharge pipe 13 and the smelting furnace 1 to ensure the sealing of the furnace body. The mesh diameter of the screening plate 4 is larger than that of the aluminum ash separator 6 to achieve graded screening, first separating large impurities, and then performing fine separation of aluminum ash and aluminum scrap.

[0025] After being crushed, the waste aluminum products are fed into the mechanism through the crushed material feeding hood 3. The crushed material is first evenly distributed by multiple distributing rollers 21 inside the mounting ring 20, so that the crushed material falls steadily onto the screening plate 4 below, avoiding local accumulation that would affect the screening effect.

[0026] When the smelting furnace 1 is running, fuel is added to the bottom of the furnace body to continuously heat the smelting pan 5, providing a high-temperature environment for aluminum smelting. During the heating process of the smelting furnace 1, the high-temperature hot gas generated in the furnace is discharged along the heat guide pipe 12. The airflow impacts the rotating fan blade 38, driving the rotating ring 34 to rotate. The rotating ring 34 drives the bearing body 36 to rotate synchronously through the fixed plate 37. The bearing body 36 is sleeved on the bidirectional threaded section 47 of the rotating tube 33, and the bearing body 36 is restricted to a fixed height position by the rotating ring 34 and the limiting groove 16. Therefore, the bearing body 36 only rotates without axial displacement. Under the action of the threaded engagement, the rotating tube 33 with the bidirectional threaded section 47 moves up and down along the axial direction for adjustment.

[0027] Since the screening plate 4 and the grid-like screening body composed of the U-shaped connecting pipe 26 and the elastic bend pipe 25 below are both fixedly installed on the rotating pipe 33, when the rotating pipe 33 rotates and moves up and down, it drives the screening plate 4 and the screening body to perform centrifugal rotation and small reciprocating motion synchronously. After the scrap falls on the screening plate 4, under the centrifugal action, the larger non-fusible waste is thrown to the outside and discharged through the discharge port 15 and the waste discharge hood 17, thus realizing the initial separation of aluminum scrap and large particle impurities.

[0028] When the negative pressure component 7 is activated, the vacuum pump 32 operates, generating negative pressure suction through the negative pressure suction pipe 30. This creates a negative pressure environment inside the negative pressure hood 9. The one-way breathable membrane 45 on the outside of the intermediate pipe 40 ensures unidirectional airflow, creating a stable negative pressure between the intermediate pipe 40 and the adsorption horn cover 39. This allows the aluminum ash generated during the screening process to be adsorbed and collected. The adsorbed aluminum ash falls along the intermediate pipe 40 and is transported to the upper area of ​​the screening body via the Y-shaped branch pipe 41 and the ash inlet 22. When the negative pressure inside the negative pressure hood 9 changes, external air enters and exits the air bladder 43 through the curved air pipe 44, causing slight expansion and contraction between the air bladder 43 and the elastic cover 42. This disturbs the aluminum ash inside the intermediate pipe 40, allowing it to fall smoothly and preventing blockage.

[0029] The dust-laden gas extracted by the vacuum pump 32 is sent into the rotating tube 33 through the gas discharge pipe 31, and then enters the interior of the elastic bend tube 25 through the air inlet 29 of the fixed ring 28. Finally, it is ejected from the air flotation port 10. The airflow blows upward, lifting the aluminum ash that has accumulated on the screening body. Together with the ash discharge pipe 11, the aluminum ash is guided to the bottom of the smelting furnace 1, realizing the separation of aluminum ash and aluminum scrap.

[0030] The screening body is made of steel with a melting point much higher than the smelting temperature of aluminum, allowing it to work stably in high-temperature environments. Simultaneously, the screening body possesses elastic deformation capabilities thanks to the loop-shaped connecting pipe 26 and the elastic bend 25. As the rotating pipe 33 moves up and down, the screening body exhibits slight opening and closing movements. This action facilitates the smooth passage of qualified aluminum scraps through the mesh into the smelting pan 5 for melting. Furthermore, in conjunction with the airflow from the air flotation port 10, it further blows away aluminum ash from the surface of the smelting pan 5, preventing aluminum ash from mixing with the molten aluminum and improving the purity of the recycled aluminum. The molten aluminum, after melting, is discharged and collected from the discharge port 23 via the aluminum outlet bend 24. Aluminum ash and fuel residue deposited at the bottom of the smelting furnace 1 can be periodically cleaned by opening the sealing door 14 and passing through the discharge pipe 13.

[0031] In practical use, the crushed waste aluminum products are first poured into the crushed material feeding hood 3. After being evenly distributed by multiple material distribution rollers 21, the crushed material falls into the screening plate 4 below. At the same time, fuel is added to the bottom of the smelting furnace 1 to heat the smelting pan 5 and provide a high-temperature environment for aluminum smelting.

[0032] During the heating process of the smelting furnace 1, the heat inside the furnace is discharged through the heat guide pipe 12. The airflow blows the rotating fan blade 38, which drives the rotating ring body 34 to rotate. The bearing body 36 rotates synchronously under the drive of the rotating ring body 34, and is restricted to a fixed position by the limiting groove 16 and cannot move up and down. Since the bidirectional threaded section 47 of the bearing body 36 and the rotating pipe 33 are threadedly engaged, the rotating pipe 33 will move up and down reciprocally under the action of the thread.

[0033] The screening plate 4 and the aluminum ash separator 6, which consists of the loop connecting pipe 26 and the flexible bend pipe 25, rotate together with the rotating pipe 33 and move up and down slightly. The crushed material undergoes centrifugal motion on the screening plate 4, and the larger waste material is discharged from the discharge port 15.

[0034] When the negative pressure component 7 is activated, the vacuum pump 32 creates a negative pressure inside the negative pressure hood 9 through the negative pressure suction pipe 30. Under the action of the one-way breathable membrane 45, the intermediate pipe 40 and the adsorption horn cover 39 generate an adsorption force to adsorb the aluminum ash in the crushed material. The aluminum ash enters the area above the aluminum ash separator 6 through the Y-shaped branch pipe 41 and the ash inlet 22. When the negative pressure changes, the curved air pipe 44 cooperates with the air bag 43 to inflate and deflate the air, disturbing the aluminum ash to fall smoothly and avoid blockage.

[0035] The gas extracted by the vacuum pump 32 enters the rotating tube 33 through the gas discharge pipe 31, then enters the elastic bend 25 through the air inlet 29 of the fixed ring 28, and finally is ejected from the air flotation port 10, which floats the aluminum ash upward. Under the action of the airflow, the aluminum ash enters the bottom of the smelting furnace 1 along the ash discharge pipe 11.

[0036] The aluminum ash separator 6 is made of steel with a melting point much higher than that of aluminum, allowing it to operate stably at high temperatures. It is also elastic, exhibiting slight opening and closing as the rotating tube 33 moves up and down. This facilitates the smooth flow of aluminum scraps into the melting pan 5 for smelting, while simultaneously separating aluminum ash from molten aluminum in conjunction with the airflow from the flotation port, preventing ash contamination and ensuring the purity of the recycled aluminum. The molten aluminum is discharged from the discharge port 23 via the aluminum outlet bend 24. Aluminum ash and residue deposited at the bottom of the furnace can be periodically cleaned through the discharge pipe 13.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste aluminum product recycling and processing facility, comprising a smelting furnace (1), characterized in that: The smelting furnace (1) is equipped with a processing hood (2) on top, and a crushed material feeding hood (3) is installed on top of the processing hood (2). The processing hood (2) is equipped with a screening plate (4) inside, and a discharge port (15) communicating with the screening plate (4) is installed on the outside of the processing hood (2). The smelting furnace (1) is equipped with a smelting plate (5) at the bottom of the screening plate (4), and an aluminum ash separator (6) is installed on top of the smelting plate (5). The top of the smelting plate (5) is connected to an ash discharge pipe (11) that guides the aluminum ash to the bottom of the smelting furnace (1). The aluminum ash separator (6) includes multiple elastic bends (25), and multiple air flotation ports (10) are distributed on the elastic bends (25). The smelting furnace (1) is equipped with a negative pressure component (7) on its exterior. The negative pressure component (7) includes a negative pressure suction pipe (30) and a gas discharge pipe (31). The negative pressure suction pipe (30) is located in the crushed material feeding hood (3) to absorb aluminum ash from the crushed material under negative pressure. The absorbed aluminum ash enters the aluminum ash separator (6). A rotating component (8) is provided on the inner wall of the processing hood (2). A heat guiding pipe that drives the rotating component (8) inside the smelting furnace (1) is connected to the smelting furnace (1). 12) A rotating tube (33) is provided in the middle of the rotating component (8). The screening plate (4) and the aluminum ash separator (6) are fitted on the rotating tube (33), and the gas discharge pipe (31) is connected to the top of the rotating tube (33). The gas drawn by the negative pressure component (7) is pumped from the gas discharge pipe (31) along the rotating tube (33) to the elastic bend (25), and then the aluminum ash in the smelting is lifted at the air flotation port (10) and enters the bottom of the smelting furnace (1) along the ash discharge pipe (11).

2. The waste aluminum product recycling and processing facility according to claim 1, characterized in that: The negative pressure component (7) includes a vacuum pump (32), the top of which is connected to a negative pressure suction pipe (30), and the other end of which is connected to a gas discharge pipe (31). A fixed bracket (19) is installed on the top of the material feeding hood (3), and a negative pressure hood (9) is installed on the top of the fixed bracket (19). An adsorption horn cover (39) is provided at the bottom of the negative pressure hood (9). The negative pressure suction pipe (30) is connected to the side wall of the negative pressure hood (9). An intermediate pipe (40) is provided inside the negative pressure hood (9), and a one-way breathable membrane (45) is provided on the outside of the intermediate pipe (40). The vacuum pump (32) forms a negative pressure state inside the intermediate pipe (40) along the one-way breathable membrane (45) through the negative pressure suction pipe (30). The intermediate pipe (40) is connected to the adsorption horn cover (39), and a Y-shaped duct is connected to the outside of the intermediate pipe (40). Y-shaped branch pipe (41) has two ash inlets (22) on the top of the melting plate (5), and the bottom ends of the Y-shaped branch pipe (41) are connected to the ash inlets (22).

3. The waste aluminum product recycling and processing facility according to claim 2, characterized in that: An elastic cover (42) is installed on the top of the negative pressure hood (9), an airbag (43) is installed on the top of the intermediate tube (40), and multiple curved air tubes (44) are installed on the outside of the airbag (43). One end of the curved air tubes (44) passes through the elastic cover (42) and is distributed inside the negative pressure hood (9).

4. The waste aluminum product recycling and processing facility according to claim 3, characterized in that: The inlet of the crushed material feeding cover (3) is provided with an installation ring (20), and multiple material distribution rollers (21) are installed inside the installation ring (20). The material distribution roller (21) located at the center of the installation ring (20) is provided with a break area, and a protective sleeve (46) is provided at the break area outside the rotating tube (33).

5. The waste aluminum product recycling and processing facility according to claim 1, characterized in that: The aluminum ash separator (6) also includes multiple loop-shaped connecting pipes (26), which are made of elastic metal. The multiple loop-shaped connecting pipes (26) and multiple elastic bends (25) form a grid-like sieve body. The outside of the sieve body is provided with a rotating ring (27) that is rotatably connected to the inner wall of the melting plate (5). The middle of the sieve body is provided with a fixed ring (28). The inside of the fixed ring (28) is a cavity. The fixed ring (28) is provided with multiple air inlets (29), and the air inlets (29) are connected to the openings of the elastic bends (25). The bottom of the rotating pipe (33) is installed on the fixed ring (28), and the gas in the rotating pipe (33) enters the elastic bend (25) through the air inlets (29).

6. The waste aluminum product recycling and processing facility according to claim 1, characterized in that: The inner wall of the processing hood (2) is provided with two limiting grooves (16). The rotating component (8) includes a rotating ring (34) set inside the processing hood (2). The top and bottom of the rotating ring (34) are equipped with sealing baffles (35) that rotate at the limiting grooves (16). The rotating tube (33) is equipped with a bearing body (36), and multiple fixing plates (37) are connected between the bearing body (36) and the rotating ring (34). The outer ring of the rotating ring (34) is provided with rotating fan blades (38), and the heat guiding pipe (12) guides the heat in the melting furnace (1) to the outside of the rotating fan blades (38), thereby stimulating the rotating ring (34) to rotate.

7. The waste aluminum product recycling and processing facility according to claim 6, characterized in that: The rotating tube (33) has a bidirectional threaded section (47) on its outside, and the bearing body (36) is fitted on the bidirectional threaded section (47).

8. The waste aluminum product recycling and processing facility according to claim 1, characterized in that: The bottom of the smelting pan (5) is provided with a discharge port (23), and a bent pipe (24) for discharging molten aluminum is provided at the discharge port (23).

9. A waste aluminum product recycling and processing facility according to claim 1, characterized in that: The mesh diameter of the screening plate (4) is larger than that of the aluminum ash separator (6). A waste discharge hood (17) is provided at the discharge port (15), and a shroud (18) is provided outside the waste discharge hood (17).

10. A waste aluminum product recycling and processing facility according to claim 1, characterized in that: The lower part of the smelting furnace (1) is provided with a discharge pipe (13) for aluminum ash and fuel, and a sealing door (14) is provided at the inlet of the discharge pipe (13) and the smelting furnace (1).

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