Aluminum scrap polishing machine

Abstract

This invention discloses an aluminum waste polishing machine, relating to the field of aluminum waste treatment technology. The aluminum waste polishing machine includes a feeding box, a polishing cylinder, a fixed frame, and a dust collection assembly. The polishing cylinder passes through the fixed frame, which is equipped with a drive assembly for rotating the polishing cylinder. The feeding box is mounted on a bracket at the end of the fixed frame near the material inlet of the polishing cylinder. The fixed frame includes a first support frame, a second support frame, and a protective cover. This invention features intermittent spiral agitator plates inside the mesh cylinder, which effectively lift and drop heavy aluminum parts, generating a strong impact to shake out deep pits and oil stains, while also providing moderate axial thrust to prevent material retention. The raised structure of the conical cylinder intercepts wood chips, causing them to remain inside the cylinder and circulate during polishing, ensuring a sufficient concentration of wood chip medium. A continuous conical discharge port is provided below the protective cover to achieve segmented collection of wood chips along the axial direction of the polishing cylinder.

Description

Technical Field

[0001] This invention relates to the field of aluminum waste treatment technology, and in particular to an aluminum waste polishing machine. Background Technology

[0002] In the recycled aluminum industry, before smelting and recycling aluminum scrap (such as waste motor housings, aluminum profiles, and aluminum shavings), it is essential to remove impurities such as oil, paint, and plastic film adhering to their surfaces. In recent years, dry drum polishing pretreatment technology using wood chips as the abrasive medium has gradually gained attention. The principle involves placing the aluminum scrap and wood chips together in a rotating drum, utilizing the friction and adsorption of the wood chips to remove oil stains from the aluminum surface. However, existing equipment faces the following technical problems when processing large, heavy aluminum scrap with numerous pits and dents (such as motor housings):

[0003] 1. Heavy aluminum parts tend to accumulate inside the drum and are difficult to tumble effectively, resulting in wood chips not being able to fully contact the deep pits and oil stains inside the drum; at the same time, as a light medium, wood chips are not able to generate sufficient frictional pressure on the heavy aluminum parts.

[0004] 2. After polishing, a large amount of wood chips will get stuck in the grooves, threaded holes or inner cavities of the aluminum parts, requiring an additional screening process, which increases equipment investment and labor costs.

[0005] 3. When using a perforated roller for real-time wood chip separation, wood chips contaminated with oil are very likely to clog the mesh, preventing the wood chips from being discharged normally and affecting continuous production. Summary of the Invention

[0006] The purpose of this invention is to provide an aluminum scrap polishing machine, which has an intermittent spiral agitator plate inside a mesh cylinder. This plate can effectively lift and drop heavy aluminum parts to generate a strong impact and shake out deep pits and oil stains. It can also provide a moderate axial thrust to prevent material from accumulating. The lifting structure of the conical cylinder can intercept wood chips, allowing them to remain inside the cylinder and circulate in the polishing process, ensuring a sufficient concentration of wood chip medium. This solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an aluminum scrap polishing machine, comprising a feeding box, a polishing cylinder, a fixed frame, and a dust collection component. The polishing cylinder passes through the fixed frame, and a drive component for driving the polishing cylinder to rotate is provided on the fixed frame. The feeding box is provided at the end of the fixed frame near the feed of the polishing cylinder via a bracket. The fixed frame includes a first support frame, a second support frame, and a protective cover. A protective cover is provided between the first support frame and the second support frame. The polishing cylinder includes a first end cylinder, a mesh cylinder, a second end cylinder, a conical cylinder, a separation cylinder, and a discharge cylinder arranged sequentially. The mesh cylinder is disposed inside the protective cover. The first end cylinder and the second end cylinder are respectively connected to the two ends of the mesh cylinder and extend out of the protective cover. A cleaning component is provided outside the mesh cylinder, and the cleaning component is movably connected to the inner wall of the protective cover.

[0008] Furthermore, the mesh cylinder is equipped with a deflector plate inside, which is spiral-shaped and intermittent.

[0009] Furthermore, the conical cylinder has a larger diameter at one end near the second end and a smaller diameter at the other end. A spiral plate is provided on the inner wall of the conical cylinder, and the spiral angle of the spiral plate is greater than that of the actuating plate.

[0010] Furthermore, welding rods are provided at equal intervals at one end of the separating cylinder. The welding rods extend into the discharge cylinder and are welded to the discharge cylinder. A flared mouth is provided at one end of the discharge cylinder near the separating cylinder. The flared mouth covers one end of the separating cylinder, and there is a gap between the flared mouth and the end of the separating cylinder.

[0011] Furthermore, both the first end cylinder and the second end cylinder are provided with raised rings at their positions inside the protective cover, and the raised rings are provided with arc-shaped grooves, which are in the form of a wave-shaped annular structure.

[0012] Furthermore, the cleaning assembly includes an arc-shaped pressure plate, a limiting member, and a brush plate. The upper end of the arc-shaped pressure plate is inserted into the limiting member and the brush plate, and the lower end of the arc-shaped pressure plate is provided with a circular plate. The circular plate is movably connected to the inner wall of the protective cover through a rotating shaft. A reinforcing rib connected to the arc-shaped pressure plate is provided on one side of the circular plate. The limiting member includes a limiting rod and a limiting plate. The limiting rod passes through the limiting plate, and one end of the limiting plate is inserted into the arc-shaped pressure plate. The other end of the limiting rod is connected to the arc-shaped groove through an arc surface.

[0013] Furthermore, the protective cover is provided with a limiting groove to restrict the movement path of the limiting rod, and the lower end of the protective cover is provided with a series of conical discharge ports, with a sawdust collection box placed below the conical discharge ports.

[0014] Furthermore, both the first end tube and the second end tube are provided with support rings at positions outside the protective cover, and the first support frame and the second support frame are provided with support seats corresponding to the support rings, with the support rings and support seats in contact connection.

[0015] Furthermore, the drive assembly includes a drive motor disposed in the second support frame, a drive sprocket connected to the drive motor, a driven sprocket connected to the outer wall of the second end cylinder, and a chain connecting the driven sprocket and the drive sprocket. The upper surface of the second support frame is provided with a through hole for the chain to move.

[0016] Furthermore, the lower end of the feeding box is provided with a feeding port, one end of which is movably connected to the first end cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The present invention features an intermittent spiral agitator plate inside a mesh cylinder, which can effectively lift and drop heavy aluminum parts to generate a strong impact to shake out deep pits and oil stains, and also provide a moderate axial thrust to prevent material from accumulating. The lifting structure of the conical cylinder can intercept wood chips, allowing them to remain inside the cylinder and circulate to participate in polishing, ensuring a sufficient concentration of wood chip medium.

[0019] The protective cover of this invention is provided with a continuous conical discharge port below, which, together with the wood chip collection box, enables the segmented collection of wood chips along the axial direction of the polishing cylinder, reducing the cost of the medium. The separation cylinder and the flared mouth form a two-stage deep separation, effectively removing the wood chips remaining in the pits and depressions on the surface of the aluminum parts, ensuring clean discharge.

[0020] The cleaning component of this invention uses the rotation of the polishing cylinder itself as a power source. The limit rod is driven by the wave-shaped arc groove on the raised ring, which in turn drives the brush plate to swing back and forth along the outer wall of the mesh cylinder. This design does not require an additional motor or cylinder, is energy-saving and reliable. The brush plate can be plugged in and replaced, making maintenance convenient. The dust suction port of the dust collection component is close to the raised ring, which concentrates the cleaning of the accumulated dust in the arc groove, ensuring the long-term reliable operation of the cleaning component. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the aluminum waste polishing machine of the present invention;

[0022] Figure 2 This is a diagram of the internal structure of the protective cover of the present invention;

[0023] Figure 3 This is a structural diagram of the fixing frame of the present invention;

[0024] Figure 4 This is a structural diagram of the polishing cylinder of the present invention;

[0025] Figure 5 This is an enlarged view of point A in the present invention;

[0026] Figure 6 This is a cross-sectional view of the polishing cylinder of the present invention;

[0027] Figure 7 This is a structural diagram of the cleaning component of the present invention;

[0028] Figure 8 This is a partial structural diagram of the cleaning component of the present invention;

[0029] Figure 9 For the present invention Figure 8 Exploded view.

[0030] In the diagram: 1. Feeding box; 11. Feeding port; 2. Polishing cylinder; 21. First end cylinder; 211. Raised ring; 212. Arc groove; 22. Mesh cylinder; 221. Actuating plate; 222. Support ring; 23. Second end cylinder; 24. Conical cylinder; 241. Spiral plate; 25. Separating cylinder; 251. Welding rod; 26. Discharge cylinder; 261. Trumpet mouth; 3. Fixing frame; 31. First support frame; 311. Support base; 32. Second support frame; 321. Through hole; 33. 331. Protective cover; 332. Conical discharge port; 333. Wood chip collection box; 334. Limiting groove; 4. Dust collection assembly; 41. Dust collection box; 42. Dust collection pipe; 5. Drive assembly; 51. Drive motor; 52. Drive sprocket; 53. Driven sprocket; 54. Chain; 6. Cleaning assembly; 61. Arc-shaped pressure plate; 611. Circular plate; 612. Rotating shaft; 613. Reinforcing rib; 62. Limiting component; 621. Limiting rod; 622. Limiting plate; 63. Brush plate; 631. Insert rod. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-9 An aluminum scrap polishing machine includes a feeding box 1, a polishing cylinder 2, a fixed frame 3, and a dust collection component 4. The polishing cylinder 2 passes through the fixed frame 3. The drive component 5 on the fixed frame 3 controls the polishing cylinder 2 to rotate on the fixed frame 3. The feeding box 1 is set at the end of the fixed frame 3 near the feeding end of the polishing cylinder 2 through a bracket. The feeding box 1 puts the mixed aluminum scrap and wood chips into the polishing cylinder 2. After the polishing cylinder 2 rotates, the wood chips and aluminum scrap rub against each other continuously, polishing and cleaning the oil stains on the surface of the aluminum scrap. The dust collection component 4 absorbs and cleans the dust in the fixed frame 3.

[0033] Specifically, the fixing frame 3 includes a first support frame 31, a second support frame 32, and a protective cover 33. The protective cover 33 is provided between the first support frame 31 and the second support frame 32. The lower end of the protective cover 33 is provided with a series of conical discharge ports 331. A sawdust collection box 332 is placed below the conical discharge ports 331. Each sawdust collection box 332 collects sawdust from only one corresponding conical discharge port 331. The continuous arrangement of the conical discharge ports 331 actually collects sawdust in segments. Slightly dirty sawdust can be reused. A cleaning component 6 is movably connected to the inner wall of the protective cover 33.

[0034] More specifically, the polishing cylinder 2 includes a first end cylinder 21, a mesh cylinder 22, a second end cylinder 23, a conical cylinder 24, a separation cylinder 25, and a discharge cylinder 26 arranged sequentially. The mesh cylinder 22 is completely disposed inside the protective cover 33. The first end cylinder 21 and the second end cylinder 23 are respectively connected to the two ends of the mesh cylinder 22 and extend out of the protective cover 33. Support rings 222 are provided at the positions of the first end cylinder 21 and the second end cylinder 23 outside the protective cover 33. Support seats 311 corresponding to the support rings 222 are provided on the first support frame 31 and the second support frame 32. The support rings 222 are in contact with the support seats 311. The support seats 311 provide support for the entire polishing cylinder 2, and when the support rings 222 rotate with the first end cylinder 21 or the second end cylinder 23, the support seats 311 can assist in their rotation.

[0035] Furthermore, the mesh cylinder 22, as the main polishing component, is equipped with a deflector plate 221 inside. When the deflector plate 221 rotates with the mesh cylinder 22, it can lift the aluminum scrap and wood chips inside, thereby continuously tumbling the aluminum scrap and wood chips, causing them to rub against each other repeatedly. The deflector plate 221 is made of wear-resistant rubber material, which can reduce the impact and wear caused by the falling aluminum scrap. At the same time, the deflector plate 221 is set in a spiral shape with a spiral angle of 5°-10°. If the angle is too large, the aluminum scrap will move too fast and the polishing time will be insufficient. If the angle is too small, the thrust will be insufficient and the material will stagnate. Moreover, the deflector plate 221 is intermittent and non-continuous, which can provide axial thrust and allow the aluminum scrap to stay and tumble briefly between each segment, increasing the contact time with the wood chips.

[0036] To facilitate the conveying of scrap aluminum, a deflector plate 221 is also installed on the inner wall of the second end cylinder 23. The scrap aluminum removed from the second end cylinder 23 enters the conical cylinder 24. The diameter of the conical cylinder 24 is larger at one end near the second end cylinder 23 and smaller at the other end, forming a raised structure at one end of the second end cylinder 23. This reduces the amount of wood chips that leave the second end cylinder 23 and the conical cylinder 24. The intercepted wood chips will fall back to the second end cylinder 23 due to gravity and leak out below the mesh cylinder 22, forming an internal circulation. In addition, to ensure the continuous horizontal displacement of the scrap aluminum, a spiral plate 241 is installed on the inner wall of the conical cylinder 24. The spiral angle of the spiral plate 241 is greater than that of the deflector plate 221, which accelerates the passage of the scrap aluminum and into the separation cylinder 25. The height of the spiral plate 241 should gradually decrease from the large end to the small end to avoid the formation of a dam effect at the small end and to prevent the scrap aluminum from being excessively squeezed.

[0037] It should be noted that the separating cylinder 25 is a cylindrical structure welded with steel bars. The gaps between the steel bars are larger than the pores of the mesh cylinder 22. Wood chips may still adhere to the pitted areas of the aluminum scrap exiting the conical cylinder 24. Continuous tumbling within the separating cylinder 25 further separates the wood chips. A wood chip collection box 332 is also placed below the separating cylinder 25. Welding rods 251 are evenly spaced at one end of the separating cylinder 25, extending into the discharge cylinder 26 and welded to it. The discharge cylinder 26 has a section near the end of the separating cylinder 25... A flared opening 261 is provided, with its opening facing the separating cylinder 25. The flared opening 261 covers one end of the separating cylinder 25, but the flared opening 261 does not contact the end of the separating cylinder 25; there is a gap between the two. When aluminum waste enters the discharge cylinder 26 from the separating cylinder 25, it will first enter the flared opening 261. The existence of the gap will cause the aluminum waste to have a height difference when falling, generating vibration and further shaking off wood chips. The wood chips pass through the gap and are collected by the flared opening 261 into the wood chip collection box 332, while the clean aluminum waste is removed from the discharge cylinder 26.

[0038] Furthermore, the second end cylinder 23 is connected to the drive assembly 5. The drive assembly 5 drives the second end cylinder 23 to rotate, thereby controlling the rotation of the entire polishing cylinder 2. The drive assembly 5 includes a drive motor 51 installed inside the second support frame 32, a drive sprocket 52 connected to the drive motor 51, a driven sprocket 53 connected to the outer wall of the second end cylinder 23, and a chain 54 connecting the driven sprocket 53 and the drive sprocket 52. The upper surface of the second support frame 32 is provided with a through hole 321 for the chain 54 to move.

[0039] During the polishing process, the sawdust from the mesh cylinder 22, which becomes heavier due to contamination and shrinks in volume due to repeated friction, will leak out from the bottom of the mesh cylinder 22. The oil has a certain stickiness, and the mesh openings are easily clogged by the sawdust, preventing it from being discharged in time. Therefore, a cleaning component 6 is installed on the outside of the mesh cylinder 22. The cleaning component 6 includes an arc-shaped pressure plate 61, a limiting member 62, and a brush plate 63. A circular plate 611 is installed at the lower end of the arc-shaped pressure plate 61, which is movably connected to the inner wall of the protective cover 33 via a rotating shaft 612. The upper end of the arc-shaped pressure plate 61 has two holes; one hole is into which the limiting member 62 is inserted, and the other hole is into which the brush plate 63 is inserted. A reinforcing rib 613 is provided on one side of the circular plate 611 and connected to the arc-shaped pressure plate 61. The reinforcing rib 613 is used to improve the strength of the arc-shaped pressure plate 61, so that the upper end of the arc-shaped pressure plate 61 always moves in contact with the outer wall of the first end cylinder 21 or the second end cylinder 23. The limiting member 62 includes a limiting rod 621 and a limiting plate 622. The limiting rod 621 passes through the limiting plate 622, and one end of the limiting plate 622 is inserted into the arc-shaped pressure plate 61. The arc-shaped pressure plate 61 always presses the limiting plate 622 to move. A limiting groove 333 is provided on the protective cover 33 near the limiting rod 621. The limiting rod 621 is inserted into the limiting groove 333 to limit the movement path of the limiting rod 621.

[0040] Matching the cleaning component 6, both the first end cylinder 21 and the second end cylinder 23 are provided with raised rings 211 located inside the protective cover 33. The raised rings 211 have arc-shaped grooves 212. One end of the limiting rod 621 is connected to the arc-shaped groove 212 via an arc surface. When the arc-shaped groove 212 moves, it drives the limiting rod 621 to move along the limiting groove 333. The arc-shaped groove 212 is set along the outer wall of the raised rings 211 and includes two groove segments in different directions, which are alternately arranged and connected end to end, making the arc-shaped groove 212 a wave-shaped circular structure. The limiting rod 621, under the rotation of the arc-shaped groove 212, drives the arc-shaped pressure plate 61 to swing position. It is understood that the arc-shaped grooves 212 of the first end cylinder 21 and the second end cylinder 23 are in the same direction. A set of cleaning components 6 includes two symmetrically arranged arc-shaped pressure plates 61, a limiting member 62, and a brush plate 63. The arc-shaped pressure plates 61 and the limiting member 62 are symmetrically arranged at both ends of the brush plate 63. In this way, the arc-shaped pressure plates 61 on both sides of the brush plate 63 swing in the same direction at the same time, jointly controlling the movement of one brush plate 63 along the outer wall of the mesh cylinder 22 to clean the outer wall of the mesh cylinder 22 and prevent wood chips from clogging the mesh holes of the mesh cylinder 22. The brush plate 63 is provided with a plug rod 631 at both ends, which is inserted into another hole of the arc-shaped pressure plate 61 for easy replacement. The power of the cleaning component 6 comes from the rotation of the polishing cylinder 2, reducing the power output.

[0041] It is also necessary to understand that the dust collection component 4 includes a dust collection box 41 and a dust collection pipe 42. The air inlet of the dust collection box 41 is connected to the dust collection pipe 42. The dust collection box 41 is also connected to the feeding box 1. The dust collection box 41 is equipped with a negative pressure device, such as a fan. The dust collection box 41 is also equipped with a filter screen, which sends the filtered wood chips into the feeding box 1 for reuse. This structure is existing technology and will not be described in detail here. By controlling the suction force, the dust in the protective cover 33 is sucked away. At the same time, the connection position of the dust collection pipe 42 and the protective cover 33 is close to the raised ring 211. The suction force is the greatest at the raised ring 211, which can effectively clean the arc groove 212 and prevent dust from accumulating in the arc groove 212, thereby ensuring the normal operation of the cleaning component 6. The lower end of the feeding box 1 is equipped with a feeding port 11. One end of the feeding port 11 is movably connected to the first end cylinder 21, which can accurately feed aluminum waste and wood chips into the polishing cylinder 2.

[0042] Working process: Before starting the equipment, the aluminum waste to be processed is mixed with wood chips in a certain proportion. The mixture is accurately fed into the first end cylinder 21 through the feeding port 11 at the lower end of the feeding box 1. The drive assembly 5 is started, and the drive motor 51 drives the second end cylinder 23 to rotate through the drive sprocket 52, chain 54 and driven sprocket 53. This drives the entire polishing cylinder 2 to rotate stably on the support seat 311 of the fixed frame 3. The mixture enters the mesh cylinder 22. The agitator plate 221 inside the cylinder rotates with the cylinder, continuously scooping up, lifting and throwing the material, so that the aluminum waste and wood chips repeatedly rub against each other with great force. The wood chips are used to clean the oil stains on the surface of the aluminum parts. The material enters the second end cylinder 23 under the push of the agitator plate 221. The agitator plate 221 on the inner wall of the second end cylinder 23 continues to push it. Then the material reaches the conical cylinder 24, which effectively intercepts the wood chips. At the same time, the spiral plate 241 on the inner wall of the conical cylinder 24... With a larger helix angle, it can accelerate the passage of aluminum scrap and prevent clogging. During the polishing process, the wood chips that have become heavy or finely ground leak out through the mesh of the mesh cylinder 22 and fall into the conical discharge port 331 below the protective cover 33, and then enter the corresponding wood chip collection box 332. To prevent oily wood chips from clogging the mesh of the mesh cylinder 22, the cleaning component 6 works continuously. The raised rings 211 on the first end cylinder 21 and the second end cylinder 23 have wavy annular arc grooves 212. When rotating, the limiting rod 621 moves along the arc groove 212 and, under the constraint of the limiting groove 333, drives the arc pressure plate 61 to swing back and forth, thereby driving the brush plate 63. The aluminum scrap is brushed back and forth against the outer wall of the mesh cylinder 22 to clean the clogged mesh in time. After preliminary polishing, the aluminum scrap enters the separation cylinder 25. The aluminum scrap continues to tumble, and the wood chips adhering to the pits on the surface are further shaken off. When the aluminum scrap enters the discharge cylinder 26 from the end of the separation cylinder 25, it first falls into the horn mouth 261. The aluminum scrap undergoes a height difference fall here, generating vibration, which completely shakes off the small amount of residual wood chips. The clean aluminum scrap is finally discharged from the discharge cylinder 26. Throughout the working process, the dust collection component 4 runs continuously. The negative pressure device in the dust collection box 41 extracts the dust in the protective cover 33 through the dust collection pipe 42, especially strengthening the suction in the area of ​​the raised ring 211 and the arc groove 212 to prevent dust accumulation from affecting the operation of the cleaning component 6. The wood chips trapped by the filter screen in the dust collection box 41 are sent back to the feeding box 1 for reuse, and the filtered clean air is discharged.

[0043] 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 aluminum scrap polishing machine, comprising a feeding box (1), a polishing cylinder (2), a fixing frame (3), and a dust collection assembly (4), characterized in that, The polishing cylinder (2) passes through the fixed frame (3). The fixed frame (3) is equipped with a drive assembly (5) for driving the polishing cylinder (2) to rotate. The end of the fixed frame (3) near the feed of the polishing cylinder (2) is equipped with a feeding box (1) via a bracket. The fixed frame (3) includes a first support frame (31), a second support frame (32), and a protective cover (33). The protective cover (33) is provided between the first support frame (31) and the second support frame (32). The polishing cylinder (2) includes a series of components. The device consists of a first end cylinder (21), a mesh cylinder (22), a second end cylinder (23), a conical cylinder (24), a separation cylinder (25), and a discharge cylinder (26). The mesh cylinder (22) is located inside the protective cover (33). The first end cylinder (21) and the second end cylinder (23) are respectively connected to the two ends of the mesh cylinder (22) and extend out of the protective cover (33). A cleaning component (6) is provided on the outside of the mesh cylinder (22), and the cleaning component (6) is movably connected to the inner wall of the protective cover (33).

2. The aluminum scrap polishing machine according to claim 1, characterized in that, The mesh tube (22) is provided with a deflector plate (221) inside. The deflector plate (221) is spiral and intermittent.

3. The aluminum scrap polishing machine according to claim 2, characterized in that, The conical cylinder (24) has a larger diameter at one end near the second end cylinder (23) and a smaller diameter at the other end. A spiral plate (241) is provided on the inner wall of the conical cylinder (24), and the spiral angle of the spiral plate (241) is greater than that of the actuating plate (221).

4. The aluminum scrap polishing machine according to claim 1, characterized in that, Welding rods (251) are provided at equal intervals at one end of the separating cylinder (25). The welding rods (251) extend into the discharge cylinder (26) and are welded to the discharge cylinder (26). A flared mouth (261) is provided at one end of the discharge cylinder (26) near the separating cylinder (25). The flared mouth (261) covers one end of the separating cylinder (25), and there is a gap between the flared mouth (261) and the end of the separating cylinder (25).

5. The aluminum scrap polishing machine according to claim 1, characterized in that, The first end cylinder (21) and the second end cylinder (23) are both provided with raised rings (211) inside the protective cover (33). The raised rings (211) are provided with arc grooves (212), and the arc grooves (212) are formed into a wave-shaped ring structure.

6. The aluminum scrap polishing machine according to claim 5, characterized in that, The cleaning component (6) includes an arc-shaped pressure plate (61), a limiting member (62), and a brush plate (63). The upper end of the arc-shaped pressure plate (61) is inserted into the limiting member (62) and the brush plate (63). The lower end of the arc-shaped pressure plate (61) is provided with a circular plate (611). The circular plate (611) is movably connected to the inner wall of the protective cover (33) through a rotating shaft (612). One side of the circular plate (611) is provided with a reinforcing rib (613) connected to the arc-shaped pressure plate (61). The limiting member (62) includes a limiting rod (621) and a limiting plate (622). The limiting rod (621) passes through the limiting plate (622), and one end of the limiting plate (622) is inserted into the arc-shaped pressure plate (61). The other end of the limiting rod (621) is connected to the arc groove (212) through the arc surface.

7. The aluminum scrap polishing machine according to claim 5, characterized in that, The protective cover (33) is provided with a limiting groove (333) to limit the movement path of the limiting rod (621). The lower end of the protective cover (33) is provided with a continuously arranged conical discharge port (331). A wood chip collection box (332) is placed below the conical discharge port (331).

8. An aluminum scrap polishing machine according to claim 1, characterized in that, The first end tube (21) and the second end tube (23) are both provided with support rings (222) at positions outside the protective cover (33). The first support frame (31) and the second support frame (32) are provided with support seats (311) corresponding to the support rings (222). The support rings (222) are in contact with the support seats (311).

9. An aluminum scrap polishing machine according to claim 5, characterized in that, The drive assembly (5) includes a drive motor (51) disposed in the second support frame (32), a drive sprocket (52) connected to the drive motor (51), a driven sprocket (53) connected to the outer wall of the second end cylinder (23), and a chain (54) connecting the driven sprocket (53) and the drive sprocket (52). The upper surface of the second support frame (32) is provided with a through hole (321) for the chain (54) to move.

10. An aluminum scrap polishing machine according to claim 1, characterized in that, The lower end of the feeding box (1) is provided with a feeding port (11), and one end of the feeding port (11) is movably connected to the first end cylinder (21).

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