An on-line impurity removal device for solid-phase regeneration of waste aluminum

Abstract

This invention relates to the field of waste aluminum recycling and processing, and particularly to an online impurity removal device for solid-phase recycling of waste aluminum. The device includes an impurity removal box, a feeding hopper, a first magnetic cylinder, a second magnetic cylinder, a guiding unit, and a power supply assembly. The impurity removal box has upper and lower corresponding rotating slots and contains the first and second magnetic cylinders with magnetic plates. A corresponding discharge chute is located on one side. The guiding unit uses a sieve plate to classify the material, guiding small particles and lumpy materials to the two magnetic cylinders respectively. Magnetically attracted metals are separated by the magnetic plates and discharged from the corresponding discharge chute. A secondary box and conveying assembly achieve secondary purification of non-magnetically attracted particles. A scraping assembly breaks the residual magnetic attraction of the magnetic cylinders. The power supply assembly controls the on / off state of the magnetic plates to achieve precise unloading. This device eliminates the need for deep crushing of materials; the grading magnetic attraction and secondary purification work together to separate four types of metals, reducing energy consumption and sorting costs, and minimizing the loss of recycled aluminum.

Description

Technical Field

[0001] This invention relates to the field of waste aluminum recycling and processing, and in particular to an online impurity removal device for solid-phase regeneration of waste aluminum. Background Technology

[0002] After recycling, waste aluminum products, due to differences in origin and original form, are sometimes simply cut into blocks, and sometimes naturally broken or lightly crushed into small particles. The waste is categorized into large blocks and small particles based on particle size, both containing non-magnetic and magnetic metals. The non-magnetic metals contain a large amount of recycled aluminum and some other metals, while the magnetic metals are mainly iron, steel, and cast iron. These impurities affect the quality of the recycled aluminum, necessitating the separation of magnetic and non-magnetic metals for preliminary impurity removal. Existing equipment typically achieves this preliminary impurity removal through magnetic separation, followed by further fine screening of the magnetic and non-magnetic metals.

[0003] After initial impurity removal, the bulk metal is separated into two groups: magnetically adsorbable and non-magnetically adsorbable. Due to its larger diameter, it is easier for staff to carry out fine screening of the two groups, thus improving screening efficiency. On the other hand, the granular metal has a smaller diameter. Even if it is also separated into two groups: magnetically adsorbable and non-magnetically adsorbable, the subsequent screening efficiency is lower than that of the separated bulk material, but still higher than that of the unseparated granular material.

[0004] In the existing preliminary impurity removal process, the recovered waste is usually in a state of mixed lumps and particles. It needs to be screened by external screening equipment first, and then the lumps and particles are put into two separate impurity removal devices for processing. This method requires multiple people to operate and multiple devices to be equipped, resulting in low processing efficiency.

[0005] If lumpy and granular metals are directly poured into the impurity removal device together, large magnetically adsorbable metals and small magnetically adsorbable metals will be grouped into one group, and large non-magnetically adsorbable metals and small non-magnetically adsorbable metals into another group. Both groups will be adsorbed and recovered in a mixed form. Since the subsequent fine screening processes for lumpy and granular metals are different, the mixing of the two will significantly increase the difficulty and time required for subsequent fine screening. Existing screening equipment will be needed to separate the lumpy and granular metals in the two groups again, and the efficiency will still be low.

[0006] If lumpy and granular metals are crushed into granules before impurity removal, the material can only be screened into two groups: non-magnetically adsorbable metal particles and magnetically adsorbable metal particles. Since all the material is in granular form, the time required for subsequent fine impurity removal will be greatly increased.

[0007] Therefore, based on the above-mentioned viewpoints, existing waste aluminum solid-phase regeneration and impurity removal technologies still have significant room for improvement in terms of classification accuracy, process synergy, and treatment adaptability. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides an online impurity removal device for solid-phase recycling of waste aluminum, comprising an impurity removal box, a feed hopper that is connected to the top of the impurity removal box, and symmetrically arranged upper and lower rotating slots on the impurity removal box. A first magnetic cylinder and a second magnetic cylinder are respectively installed in the two rotating slots, and several magnetic plates evenly distributed along their axes are installed on the inner sides of both the first magnetic cylinder and the second magnetic cylinder.

[0009] Two discharge troughs, namely discharge trough 1 and discharge trough 2, are respectively provided on one side of the impurity removal box, corresponding to the first magnetic cylinder and the second magnetic cylinder.

[0010] The inside of the waste removal box is equipped with a guide unit for conveying waste to the first magnetic cylinder and the second magnetic cylinder respectively. The guide unit drives the waste to contact the first magnetic cylinder and the second magnetic cylinder respectively. The first magnetic cylinder and the second magnetic cylinder separate small particles and blocky magnetic metals by magnetic attraction through the inner magnetic plates and discharge them through discharge chute one and discharge chute two respectively.

[0011] Preferably, one end of both the first and second magnetic cylinders is equipped with a main cylinder that penetrates their interiors, and the main cylinders are connected to each other by a belt drive.

[0012] An external gear ring is fixedly sleeved on the outside of a main cylinder, and a drive shaft is rotatably mounted on the outside of the impurity removal box. A drive gear that meshes with the external gear ring is fixedly sleeved on the outside of the drive shaft.

[0013] Preferably, the guiding unit includes an inclined frame installed inside the impurity removal box and whose top is corresponding to the feed hopper. A screen plate is installed inside the inclined frame, an inclined plate is installed at the bottom of the inclined frame, an arc-shaped plate corresponding to the outside of the first magnetic cylinder is installed on one side of the inclined plate, and a discharge plate corresponding to the discharge trough is installed on one side of the arc-shaped plate.

[0014] Preferably, a bending plate is also installed at the bottom of the first inclined plate, the horizontal section of the bending plate extends toward the outside of the second magnetic cylinder, and a second inclined plate is installed on the inner wall of the cleaning box, the vertical section of the bending plate and the inner side of the cleaning box forming a dropping cavity for the block metal to fall.

[0015] An arc-shaped plate corresponding to the outer side of the second magnetic cylinder is installed at the end of the inclined plate two, and a discharge plate corresponding to the discharge trough two is installed at the end of the inclined plate two.

[0016] The inner top wall of the cleaning box and the outer side of the arc-shaped plate are respectively equipped with partition plates that contact the outer sides of the corresponding first and second magnetic cylinders.

[0017] Preferably, a drop groove is installed in the middle of the arc-shaped plate two, and a discharge groove three corresponding to the drop groove is installed at the bottom of the arc-shaped plate two.

[0018] The interior of the impurity removal box is equipped with triangular frame plates at the top and bottom, respectively corresponding to the drop chute and the discharge chute.

[0019] Preferably, a secondary box is installed at one end of the impurity removal box. The secondary box has an internal receiving cavity and a discharge cavity that communicates with the receiving cavity. The outer side of the secondary box has a discharge trough that communicates with the discharge cavity. The bottom of the secondary box has a discharge trough that communicates with the receiving cavity. One end of the second magnetic cylinder rotates through the outer wall of the impurity removal box and the secondary box and is located in the receiving cavity. A transmission assembly is installed between the impurity removal box and the secondary box to discharge the metal particles on the arc plate into the receiving cavity.

[0020] Preferably, the transmission assembly includes a semi-circular groove formed on the inner side of the arc plate, and an auger rod is rotatably connected between the impurity removal box and the auxiliary box. The auger rod is located in the semi-circular groove and inside the receiving cavity, respectively. A sealing arc plate that contacts the outer side of the second magnetic cylinder is installed on the inner wall of the receiving cavity.

[0021] One end of the auger rod rotates through the outer wall of the impurity removal box and is fixedly fitted with a transmission gear that meshes with the outer gear ring on the outside.

[0022] Preferably, one end of the impurity removal box is equipped with an air blowing frame that communicates with its internal drop chamber, and an air inlet pipe is installed on one side of the air blowing frame.

[0023] Preferably, the inner wall of the receiving cavity is fitted with a strip frame with a through bottom wall. One end of the strip frame extends out of the outer wall of the auxiliary box and the impurity removal box and is located in the drop cavity, while the other end is connected to the outer wall of the other end of the auxiliary box.

[0024] Preferably, several sieve plates are installed inside the bar frame, and an electrically controlled flap is hinged to the bottom of the bar frame.

[0025] In summary, this application includes at least one of the following beneficial technical effects: I. This invention achieves material classification by particle size through the sieve plate of the guide unit. With the help of the first and second magnetic cylinders, small particles and blocky magnetic metals are respectively adsorbed. Then, through the coordinated action of the transmission component, power supply component and scraping component, the waste aluminum mixture is accurately separated into four categories: large non-magnetic metals, small non-magnetic metals, large magnetic metals, and small magnetic metals. This solves the cross-mixing problem caused by the existing technology's only coarse separation and reduces the difficulty of subsequent sorting.

[0026] II. This invention removes particulate impurities adhering to the surface of block metal by using an air blowing frame and a strip frame together. After being transported to the receiving cavity by the auger rod, the remaining magnetic particles are adsorbed a second time by the second magnetic cylinder. At the same time, the scraping component breaks the residual magnetic attraction of the magnetic cylinder and avoids secondary adsorption, which significantly improves the thoroughness of magnetic metal separation, reduces the loss of recycled aluminum material, and ensures the quality of recycled aluminum.

[0027] Third, this invention eliminates the need for deep crushing of waste aluminum materials. Through the integrated design of multi-stage separation, graded magnetic adsorption, and secondary purification, it reduces equipment energy consumption and wear, simplifies the operation process, improves processing efficiency, and adapts to the industrial production needs of solid-phase regeneration of waste aluminum. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of the main body of the present invention.

[0030] Figure 2 This is a planar sectional view of the main body of the present invention.

[0031] Figure 3 This is the present invention. Figure 2 Enlarged view of part of the structure at point A in the middle.

[0032] Figure 4 This is a schematic diagram of the structure of the guiding unit, the transmission component, and the scraping component of the present invention.

[0033] Figure 5 This is a schematic diagram of the transmission component of the present invention from another perspective.

[0034] Figure 6 This is a planar sectional view of the auxiliary box of the present invention.

[0035] Figure 7 This is a meshing diagram of the transmission gear, drive gear, and external gear ring of the present invention.

[0036] Figure 8 This is the present invention. Figure 7 Enlarged view of part of the structure at point B.

[0037] Figure 9 This is a schematic diagram of the power supply component of the present invention.

[0038] In the diagram, 1. Impurity removal box; 10. Feed hopper; 11. First magnetic cylinder; 12. Second magnetic cylinder; 13. Magnetic plate; 14. Discharge chute one; 15. Discharge chute two; 16. Main cylinder; 17. External gear ring; 18. Drive shaft; 19. Drive gear; 2. Guide unit; 20. Inclined frame; 21. Screen plate one; 22. Inclined plate one; 23. Arc plate one; 24. Discharge plate one; 25. Bending plate; 26. Inclined plate two; 27. Arc plate two; 28. Discharge plate two; 29. ​​Divider plate; 210. Drop chute; 211. Discharge chute three; 212. Triangular frame plate; 3. 30. Transmission assembly; 31. Sub-box; 32. Receiving cavity; 33. Discharge cavity; 34. Discharge chute four; 35. Discharge chute five; 36. Semicircular chute; 37. Screw rod; 38. Sealing arc plate; 39. Transmission gear; 310. Air blowing frame; 311. Air inlet pipe; 312. Strip frame; 313. Screen plate two; 314. Electrically controlled flap; 4. Power supply assembly; 40. T-shaped plate; 41. Semicircular plate; 42. Extension plate; 43. Arc-shaped contact plate; 44. Contact point; 5. Scraping assembly; 50. Reciprocating screw; 51. Rotating gear; 52. Scraping plate; 53. Limiting plate. Detailed Implementation

[0039] The following combination Figures 1 to 9 The embodiments of the present invention will be described in detail below.

[0040] This application discloses an online impurity removal device for solid-phase recycling of waste aluminum. It is used in the solid-phase impurity removal process after waste aluminum recycling. It can separate four types of metals in the material according to particle size, so as to achieve precise impurity removal and efficient recycling of recycled aluminum.

[0041] Example 1: Refer to Figure 1 and Figure 2 As shown, the assembly includes a waste removal box 1, a feed hopper 10, a first magnetic cylinder 11, a second magnetic cylinder 12, a magnetic plate 13, a discharge chute 14, a discharge chute 2 15, a guide unit 2, a main cylinder 16, an external gear ring 17, a drive shaft 18, and a drive gear 19. The top of the waste removal box 1 is connected to the feed hopper 10, which allows waste materials to be poured into the waste removal box 1. The waste removal box 1 has symmetrically arranged upper and lower rotating slots. The first magnetic cylinder 11 and the second magnetic cylinder 12 are installed in the two rotating slots respectively. Several magnetic plates 13 are evenly distributed along their axes on the inner side of the first magnetic cylinder 11 and the second magnetic cylinder 12. When driven by an external force, the first magnetic cylinder 11 and the second magnetic cylinder 12 can rotate counterclockwise in the corresponding rotating slots.

[0042] Two discharge troughs, namely 14 and 15, are provided on one side of the impurity removal box 1, which correspond to the first magnetic cylinder 11 and the second magnetic cylinder 12, respectively.

[0043] Inside the waste removal box 1 is a guide unit 2 for conveying waste to the first magnetic cylinder 11 and the second magnetic cylinder 12 respectively. The guide unit 2 drives the waste to contact the first magnetic cylinder 11 and the second magnetic cylinder 12 respectively. The two magnetic cylinders are separated by magnetic attraction through the inner magnetic plate 13. After separation, the waste is discharged through the discharge chute 14 and the discharge chute 25 respectively.

[0044] One end of the first magnetic cylinder 11 and the second magnetic cylinder 12 is equipped with a main cylinder 16 that is connected to the inside of the main cylinder 16. The main cylinders 16 are connected by belt drive. An external gear ring 17 is fixedly sleeved on the outside of one main cylinder 16. A drive shaft 18 is rotatably installed on the outside of the impurity removal box 1. A drive gear 19 that meshes with the external gear ring 17 is fixedly sleeved on the outside of the drive shaft 18.

[0045] The end of the drive shaft 18 can be connected to the main shaft of an external motor. The external motor drives the drive gear 19 to rotate through the main shaft. The drive gear 19 can then drive the second magnetic cylinder 12 to rotate through the external gear ring 17 and the main cylinder 16. When the second magnetic cylinder 12 rotates, it can drive the first magnetic cylinder 11 to rotate through belt drive.

[0046] Reference Figures 2 to 5 As shown, the guide unit 2 is used to convey waste materials to the upper and lower magnetic separators respectively. Specifically, the guide unit 2 includes an inclined frame 20, a screen plate 21, an inclined plate 22, an arc plate 23, a discharge plate 24, a bending plate 25, an inclined plate 26, an arc plate 27, a discharge plate 28, a partition plate 29, a drop trough 210, a discharge trough 211, and a triangular frame plate 212. The inclined frame 20 is installed in the impurity removal box 1 and its top corresponds to the feed hopper 10. The screen plate 21 is installed inside the inclined frame 20, and the inclined plate 22 is installed at the bottom of the inclined frame 20. An arc plate 23 corresponding to the outside of the first magnetic cylinder 11 is installed on one side of the inclined plate 22, and a discharge plate 24 corresponding to the discharge trough 14 is installed on one side of the arc plate 23.

[0047] The inclined frame 20 is used to support and fix the screen plate 21. The waste material can fall onto the screen plate 21 through the feed hopper 10. Then, the small metal particles in the waste material can fall through the screen holes on the screen plate 21 to the upper end of the inclined plate 22 at the bottom, and then slide into the arc plate 23. At this time, when the first magnetic cylinder 11 rotates, it uses the magnetic plate 13 inside to attract the magnetic metal in the particles to its outer side, while the non-magnetically attracted metal will stay on the inner side of the arc plate 23.

[0048] After the magnetically attractable particles on the outside of the first magnetic cylinder 11 are driven to correspond with the discharge plate 24, the corresponding magnetic plate 13 closes, causing the magnetically attractable particles on the outside of the first magnetic cylinder 11 to lose their magnetic attraction and fall onto the discharge plate 24. Then, they are discharged along the inclined surface of the discharge plate 24 through the discharge trough 14 to the impurity removal box 1, thus completing the separation of the magnetically attractable metal particles.

[0049] A bent plate 25 is also installed at the bottom of the inclined plate 22. The horizontal section of the bent plate 25 extends toward the outside of the second magnetic cylinder 12. An inclined plate 26 is installed on the inner wall of the cleaning box 1. The vertical section of the bent plate 25 and the inner wall of the cleaning box 1 form a dropping cavity for the block metal to fall.

[0050] An arc-shaped plate 27 corresponding to the outer side of the second magnetic cylinder 12 is installed at the end of the inclined plate 26, and a discharge plate 28 corresponding to the discharge trough 25 is installed at the end of the inclined plate 26.

[0051] The blocky metal particles blocked by the sieve plate 21 can continue to fall along the inclined surface of the sieve plate 21 into the falling cavity. The bending plate 25 can limit the falling path of the blocky metal, and finally fall onto the upper end of the inclined plate 26. It moves along the inclined surface of the inclined plate 26 to the upper end of the arc plate 27, so that the second magnetic cylinder 12 can attract the magnetically attracted blocky metal on the arc plate 27 to its outer side through the magnetic plate 13 inside. After the second magnetic cylinder 12 rotates and drives the magnetically attracted blocky metal to correspond with the discharge plate 28, the corresponding magnetic plate 13 closes, so that the magnetically attracted blocky metal falls onto the discharge plate 28. The magnetically attracted blocky metal can then be discharged along the inclined surface of the discharge plate 28 through the discharge trough 25 to the outside of the impurity removal box 1, completing the separation of the magnetically attracted blocky metal.

[0052] The inner top wall of the impurity removal box 1 and the outer side of the arc plate 23 are respectively equipped with partition plates 29 that contact the outer sides of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12. The partition plates 29 are used to prevent the metal on the outer side of the first magnetic cylinder 11 and second magnetic cylinder 12 from being attracted to their outer side by residual magnetic force. After contacting the partition plates 29, the metal can be blocked and eventually detached from the outer side of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12 and fall to the upper end of the corresponding discharge plate 24 and discharge plate 28.

[0053] A drop groove 210 is installed in the middle of the arc-shaped plate 27, and a discharge groove 211 corresponding to the drop groove 210 is installed at the bottom of the arc-shaped plate 27. When the magnetically attractable block metal is attracted by the second magnetic cylinder 12, the remaining non-magnetically attractable block metal on the arc-shaped plate 27 will move into the drop groove 210, and then be discharged to the outside of the impurity removal box 1 through the discharge groove 211. In this way, both magnetically attractable and non-magnetically attractable block metals are separated. The non-magnetically attractable block metals contain a large number of aluminum blocks, which facilitates subsequent fine separation by the implementers.

[0054] Inside the impurity removal box 1, there are triangular frame plates 212 with their upper and lower ends corresponding to the drop chute 210 and the discharge chute 211, respectively. The triangular frame plates 212 are used to limit the falling path of the block metal and prevent it from accumulating inside the impurity removal box 1.

[0055] Reference Figures 3 to 7 As shown, a secondary box 30 is installed at one end of the impurity removal box 1. The secondary box 30 has an internal receiving cavity 31 and a discharge cavity 32 communicating with the receiving cavity 31. A discharge trough 33 communicating with the discharge cavity 32 is located on the outer side of the secondary box 30. A discharge trough 34 communicating with the receiving cavity 31 is located at the bottom of the secondary box 30. One end of the second magnetic cylinder 12 rotatably passes through the outer walls of the impurity removal box 1 and the secondary box 30, and is located within the receiving cavity 31. A transmission assembly 3 is installed between the impurity removal box 1 and the secondary box 30 to discharge metal particles from the arc-shaped plate 23 into the receiving cavity 31. Specifically, the transmission assembly 3 includes the secondary box 30, the receiving cavity 31, and the discharge cavity. 32, 33, 34, 35, 36, 37, 38, 39, 310, 311, 312, 313, 32, 33, 34, 35, 36, 37, 38, 39, 310, 311, 312, 313, 32, 33, 34, 35, 36, 37, 38, 39, 310, 311, 312, 312, 313, 32, 33, 34, 35, 36, 37, 38, 39, 310, 311, 312, 312, 313, 32, 33, 34, 312, 313, 31, 32, 313, 31, 32, 33, 31, 32, 31, 31, 32, 31, 31, 32, 31, 31, 32, 31, 32, 31, 32, 31, 32, 31, 32, 33, 34, 35, 36, 37, 38, 39, 31, 31, 32 ...

[0056] When the external gear ring 17 rotates, it drives the auger rod 36 to rotate synchronously between the impurity removal box 1 and the auxiliary box 30 via the transmission gear 38. The semi-circular groove 35 is connected to the inner side of the arc-shaped plate 23. Therefore, after the first magnetic cylinder 11 has attracted the magnetically adsorbable metal particles, the remaining non-magnetically adsorbable metal particles will move into the semi-circular groove 35. At this time, the rotation of the auger rod 36 will drive the non-magnetically adsorbable metal particles towards the auxiliary box 30 via its outer spiral blades. During this movement, if the non-magnetically adsorbable metal particles... The particles also contain some magnetically adsorbable metal particles, which can be simultaneously adsorbed by the first magnetic cylinder 11. Finally, the non-magnetically adsorbable metal particles in the semi-circular groove 35 will be transported by the auger rod 36 through the through hole between the impurity removal box 1 and the auxiliary box 30 to the receiving cavity 31. After the non-magnetically adsorbable metal particles enter the receiving cavity 31, they can fall onto the outer surface of the second magnetic cylinder 12. At this time, the second magnetic cylinder 12 can continue to adsorb the remaining magnetically adsorbable metal particles in the non-magnetically adsorbable metal particles, thus preventing the problem of incomplete separation due to the small size of the metal particles.

[0057] The remaining non-magnetically attracted metal particles will enter the discharge trough 34 along the outer side of the second magnetic cylinder 12 and the outer wall of the receiving cavity 31, and then be discharged to the outer side of the auxiliary box 30 through the discharge trough 34. The magnetically attracted metal particles attracted to the outer side of the second magnetic cylinder 12 will be driven to the corresponding discharge cavity 32, and the corresponding magnetic plate 13 will be de-energized (the discharge cavity 32 corresponds to the discharge plate 28, so the de-energization of the magnetic plate 13 will not affect the falling of the block magnetically attracted metal particles). The magnetic force disappears, causing the magnetically attracted metal particles to fall onto the inner wall of the discharge cavity 32, and then be discharged to the outer side of the auxiliary box 30 along the inclined surface of the discharge cavity 32 through the discharge trough 33.

[0058] One end of the impurity removal box 1 is equipped with an air blowing frame 39 that communicates with its internal drop chamber, and an air inlet pipe 310 is installed on one side of the air blowing frame 39.

[0059] The inner wall of the receiving cavity 31 is equipped with a strip frame 311 with a through bottom wall. One end of the strip frame 311 extends out of the outer wall of the auxiliary box 30 and the impurity removal box 1 and is located in the drop cavity. The other end is connected to the outer wall of the other end of the auxiliary box 30. Several sieve plates 312 are installed inside the strip frame 311. An electrically controlled flap 313 is hinged to the bottom of the strip frame 311.

[0060] That is, the blocky metal falling into the drop chamber may also carry some particulate metal. In order to prevent them from moving synchronously onto the arc-shaped plate 27, the air inlet pipe 310 can be connected to an external air supply device. The external air supply device blows gas into the drop chamber through the air inlet pipe 310 and the air blowing frame 39. The gas can blow the particulate metal towards the opening of the strip frame 311, while the blocky metal will not be blown away. Then the particulate metal will pass through the strip frame 311 and be blocked by several sieve plates 312, while the gas can pass through the sieve plates 312. The gas flows through the sieve holes to the other end of the strip frame 311, and then exits from the other end of the strip frame 311 into the auxiliary box 30. When the amount of metal particles blocked on the second sieve plate 312 reaches the target, the electrically controlled flap 313 is energized and opened. At this time, the gas in the strip frame 311 will blow the metal particles blocked on the second sieve plate 312 into the receiving cavity 31. Then the external gas supply equipment stops supplying gas to prevent too much gas from being discharged from the strip frame 311 into the receiving cavity 31, which would cause the metal particles in the receiving cavity 31 to disperse over a large area and prevent normal separation.

[0061] Then, the granular metal particles that enter the receiving cavity 31 will move through the inner wall of the receiving cavity 31 or come into direct contact with the outer side of the second magnetic cylinder 12, so that the second magnetic cylinder 12 can adsorb the magnetically adsorbable metal particles inside. After the adsorption is completed, the remaining non-magnetically adsorbable metal particles will be discharged to the outside of the auxiliary box 30 through the discharge trough 5 34. At this point, the magnetically adsorbable and non-magnetically adsorbable metal particles in the metal particles are separated. The non-magnetically adsorbable particles discharged from the discharge trough 5 34 will contain a large number of aluminum particles, which improves the separation speed and purity of the subsequent implementers.

[0062] Furthermore, the sealing arc plate 37 can prevent the granular metal particles in the receiving cavity 31 from falling into the dropping cavity before they have been fully adsorbed, and can also block the magnetically adsorbable metal particles adsorbed on the outside of the second magnetic cylinder 12.

[0063] Example 2: Refer to Figures 7 to 9 As shown, based on Embodiment 1, a power supply assembly 4 for supplying power to the magnetic plate 13 is installed inside the first magnetic cylinder 11 and the second magnetic cylinder 12. Specifically, the power supply assembly 4 includes a T-shaped plate 40, a semi-circular plate 41, an extension plate 42, an arc-shaped contact plate 43, and contacts 44. The T-shaped plate 40 is installed on one side of the outer wall of the impurity removal box 1 by bolts. The two ends of the vertical section of the T-shaped plate 40 correspond to the ends of the two main cylinders 16, respectively. Two symmetrically distributed semi-circular plates 41 are installed on both ends of the T-shaped plate 40. One end of the semi-circular plate 41 extends through the main cylinder 16 into the corresponding first magnetic cylinder 11 and second magnetic cylinder 12. An extension plate 42 is installed on the outer side of the two corresponding semi-circular plates 41. An arc-shaped contact plate 43 corresponding to the magnetic plate 13 is installed on the outer side of the extension plate 42. Two contacts 44 are installed on the side of the magnetic plate 13 facing the arc-shaped contact plate 43, and the two contacts 44 contact the two arc-shaped contact plates 43 one by one.

[0064] The positive and negative terminals of the external power supply equipment can be connected to the ends of the two extension plates 42. The two extension plates 42 can transmit positive and negative electricity to the arc-shaped contact plate 43 at their ends through the corresponding extension plates 42. The arc-shaped contact plate 43 then supplies positive or negative electricity to the magnetic plate 13 through the contact points 44, so that the magnetic plate 13 is energized and generates magnetic force. The arc-shaped contact plate 43 is not a closed circle. It has an opening corresponding to the corresponding discharge plate 1 24 and discharge plate 2 28. The T-shaped plate 40 can support the arc-shaped contact plate 43 through the semi-circular plate 41 and the extension plate 42. When the first magnetic cylinder 11 or the second magnetic cylinder 12 drives the corresponding magnetic plate 13 to rotate, the two contact points 44 of the magnetic plate 13 move along the contact surface of the arc-shaped contact plate 43, so that the magnetic plate 13 is energized.

[0065] When the first magnetic cylinder 11 and the second magnetic cylinder 12 drive the corresponding magnetic plate 13 to rotate to correspond with the discharge plate 24 or the discharge plate 28, the two contacts 44 of the corresponding magnetic plate 13 correspond to the opening of the arc-shaped contact plate 43. At this time, the magnetic plate 13 is de-energized and no longer attracts the corresponding magnetic metal, causing the corresponding magnetic metal to fall onto the discharge plate 24 and the discharge plate 28.

[0066] Example 3: Refer to Figure 2 , 4 As shown in Figures 5, 6, and 7, based on Embodiments 1 and 2, in order to prevent magnetically attracted particles and bulk metal from remaining adhered to the outside of the first magnetic cylinder 11 and the second magnetic cylinder 12 due to residual magnetic attraction and not falling off, a scraping assembly 5 is installed on the impurity removal box 1 and the auxiliary box 30. Specifically, the scraping assembly 5 includes a reciprocating screw 50, a rotating gear 51, a scraping plate 52, and a limiting plate 53. Two reciprocating screws 50, corresponding one-to-one with the discharge plate 24 and the discharge plate 28, are rotatably installed on the inner walls of both sides of the impurity removal box 1. One end of one reciprocating screw 50 rotatably passes through the outer wall of the impurity removal box 1 and is fixedly sleeved on the outside with a rotating gear 51 that meshes with the outer gear ring 17. One end of the other reciprocating screw 50 also passes through the outer wall of the impurity removal box 1, and the two reciprocating screws 50 are connected by a belt drive.

[0067] A scraper 52 is threaded on the outer side of the reciprocating screw 50, and the inner side of the scraper 52 slides against the outer side of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12. A sliding groove is provided on one side of the discharge plate 1 24 and the discharge plate 2 28. A limiting plate 53 is installed at the bottom of the scraper 52, extending into the corresponding sliding groove and slidingly connected thereto.

[0068] That is, when the external gear ring 17 rotates, it can synchronously drive the corresponding reciprocating lead screw 50 to rotate through the rotating gear 51. The reciprocating lead screw 50 can drive another reciprocating lead screw 50 to rotate through belt transmission. During the rotation of the reciprocating lead screw 50, it can drive its corresponding scraping plate 52 to move synchronously in the reciprocating direction on the outside of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12. The sliding groove can limit and guide the corresponding scraping plate 52 through the limiting plate 53. The inner side of the scraping plate 52 corresponds to the opening of the arc-shaped contact plate 43. That is, when the corresponding magnetic plate 13 stops adsorbing the magnetic metal, the scraping plate 52 can scrape the magnetic metal on the outside of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12 during the reciprocating movement, preventing the magnetic metal particles from being still adsorbed on the outside of the corresponding first magnetic cylinder 11 and second magnetic cylinder 12 due to the influence of residual magnetic adsorption.

[0069] Simultaneously, the scraper 52 actively scrapes the magnetically attractable metal from the outer surfaces of the first magnetic cylinder 11 and the second magnetic cylinder 12 through reciprocating scraping. This differs from the natural detachment of the magnetic plate 13 after power is cut off—when naturally detached, the material is easily affected by the residual magnetic attraction of the magnetic cylinder, remaining on the surface or being re-attracted by the subsequent electromagnetic plate 13 during the fall. The active scraping directly breaks the residual magnetic attraction, forcing the material to quickly detach from the magnetic cylinder and fall to the corresponding discharge plate, fundamentally avoiding secondary adsorption. Even if a few materials are re-adsorbed due to special circumstances, the subsequent reciprocating motion of the scraper 52 can force them off, ensuring no material remains. The scraper 52 moves synchronously with the rotation of the magnetic cylinder, without interfering with the magnetic separation, while removing dust and impurities from the surface of the magnetic cylinder, ensuring the magnetic field strength and stable operation of the device, improving separation efficiency, and achieving precise impurity removal of waste aluminum materials.

[0070] One end of the reciprocating screw 50 corresponding to the second magnetic cylinder 12 is rotatably inserted into the discharge cavity 32, and the outer side of the reciprocating screw 50 is also threadedly connected to a scraper 52 that contacts the outer side of the second magnetic cylinder 12. The corresponding sliding groove is opened on the inner wall of the discharge cavity 32, and a limiting plate 53 extending into the corresponding sliding groove is also installed on one side of the scraper 52. Therefore, the corresponding scraper 52 can scrape the magnetic metal particles on the second magnetic cylinder 12 and drop them onto the discharge cavity 32.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An online impurity removal device for solid-phase recycling of waste aluminum, comprising an impurity removal box (1), wherein a feed hopper (10) communicating with the interior of the impurity removal box (1) is installed through the top of the impurity removal box (1), characterized in that: The impurity removal box (1) is symmetrically provided with corresponding upper and lower rotating slots. The first magnetic cylinder (11) and the second magnetic cylinder (12) are installed in the two rotating slots respectively. Several magnetic plates (13) are evenly distributed along their axes on the inner side of the first magnetic cylinder (11) and the second magnetic cylinder (12). Two discharge troughs, namely 14 and 25, are provided on one side of the impurity removal box (1), which correspond to the first magnetic cylinder (11) and the second magnetic cylinder (12), respectively. Inside the waste removal box (1) is a guide unit (2) for conveying waste to the first magnetic cylinder (11) and the second magnetic cylinder (12) respectively. The guide unit (2) drives the waste to contact the first magnetic cylinder (11) and the second magnetic cylinder (12) respectively. The first magnetic cylinder (11) and the second magnetic cylinder (12) separate small particles and blocky magnetic metals by magnetic attraction through the inner magnetic plate (13) and discharge them through the discharge chute one (14) and the discharge chute two (15) respectively.

2. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 1, characterized in that: One end of the first magnetic cylinder (11) and the second magnetic cylinder (12) is equipped with a main cylinder (16) that is connected to the inside of the main cylinder (16), and the main cylinders (16) are connected to each other by belt drive. An external gear ring (17) is fixedly sleeved on the outside of a main cylinder (16), and a drive shaft (18) is rotatably mounted on the outside of the impurity removal box (1). A drive gear (19) that meshes with the external gear ring (17) is fixedly sleeved on the outside of the drive shaft (18).

3. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 1, characterized in that: The guide unit (2) includes an inclined frame (20) installed inside the impurity removal box (1) and whose top is corresponding to the feed hopper (10). A screen plate (21) is installed inside the inclined frame (20). An inclined plate (22) is installed at the bottom of the inclined frame (20). An arc plate (23) is installed on one side of the inclined plate (22) and located on the outside of the first magnetic cylinder (11). A discharge plate (24) is installed on one side of the arc plate (23) with one end extending to the discharge trough (14) corresponding to it.

4. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 3, characterized in that: A bent plate (25) is also installed at the bottom of the inclined plate (22). The horizontal section of the bent plate (25) extends toward the outside of the second magnetic cylinder (12). An inclined plate (26) is installed on the inner wall of the cleaning box (1). The vertical section of the bent plate (25) and the inner side of the cleaning box (1) form a dropping cavity for the block metal to fall. An arc-shaped plate (27) corresponding to the outer side of the second magnetic cylinder (12) is installed at the end of the inclined plate (26), and a discharge plate (28) corresponding to the discharge trough (15) is installed at the end of the inclined plate (26). The inner top wall of the cleaning box (1) and the outer side of the arc plate (23) are respectively equipped with partition plates (29) that are in contact with the outer sides of the corresponding first magnetic cylinder (11) and second magnetic cylinder (12).

5. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 4, characterized in that: A drop groove (210) is installed in the middle of the arc plate 2 (27), and a discharge groove 3 (211) corresponding to the drop groove (210) is installed at the bottom of the arc plate 2 (27). The interior of the impurity removal box (1) is equipped with triangular frame plates (212) whose upper and lower ends correspond to the drop chute (210) and the discharge chute (211) respectively.

6. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 4, characterized in that: A secondary box (30) is installed at one end of the impurity removal box (1). The secondary box (30) has a receiving cavity (31) inside. The secondary box (30) also has a discharge cavity (32) that communicates with the receiving cavity (31). The secondary box (30) has a discharge trough (4) that communicates with the discharge cavity (32) on the outside. The secondary box (30) has a discharge trough (5) that communicates with the receiving cavity (31) at the bottom. One end of the second magnetic cylinder (12) rotates through the outer wall of the impurity removal box (1) and the secondary box (30) and is located in the receiving cavity (31). A transmission assembly (3) is installed between the impurity removal box (1) and the secondary box (30) to discharge the metal particles on the arc plate (23) into the receiving cavity (31).

7. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 6, characterized in that: The transmission component (3) includes a semi-circular groove (35) opened on the inner side of the arc plate (23), and a screw rod (36) is rotatably connected between the impurity removal box (1) and the auxiliary box (30). The screw rod (36) is located in the semi-circular groove (35) and the receiving cavity (31) respectively. A sealing arc plate (37) that contacts the outer side of the second magnetic cylinder (12) is installed on the inner wall of the receiving cavity (31). One end of the auger rod (36) rotates through the outer wall of the cleaning box (1) and is fixedly fitted with a transmission gear (38) that meshes with the outer gear ring (17).

8. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 6, characterized in that: One end of the cleaning box (1) is equipped with an air blowing frame (39) that communicates with its internal drop chamber, and an air inlet pipe (310) is installed on one side of the air blowing frame (39).

9. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 8, characterized in that: The inner wall of the receiving cavity (31) is fitted with a strip frame (311) with a through bottom wall. One end of the strip frame (311) extends out of the outer wall of the auxiliary box (30) and the cleaning box (1) located in the drop cavity, and the other end is connected to the outer wall of the other end of the auxiliary box (30).

10. The online impurity removal device for solid-phase regeneration of waste aluminum according to claim 9, characterized in that: Several sieve plates (312) are installed inside the strip frame (311), and an electrically controlled flap (313) is hinged to the bottom of the strip frame (311).

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