A dust removal structure for a reduction iron powder magnetic separation process

Abstract

The present invention relates to the technical field of reduced iron powder processing, and specifically to a dust removal structure for magnetic separation treatment of reduced iron powder, including: a dust removal box, a second guiding plate is fixedly connected inside the dust removal box, and a sealing extension mechanism and a filtering mechanism are arranged on one side of the dust removal box. Through the setting of the screening magnetic separation mechanism, the linkage effect of the first transmission belt and the second transmission belt drives the magnetic rollers on the five third rotating shafts to rotate synchronously. The multiple groups of magnetic rollers cooperate with the screening plate to achieve multi-level magnetic separation of iron powder, and can accurately adsorb the magnetic iron powder in the mixed dust. The connecting rod fixed by the fixed shaft drives the scraper to closely adhere to the surface of the magnetic roller, and can clean the iron powder adsorbed by the magnetic roller in real time, avoiding the accumulation of iron powder from affecting the magnetic separation effect. The cleaned iron powder is centrally recovered through the iron powder blanking plate, and the separated dust is discharged through the second guiding plate to the dust discharge plate, realizing the efficient diversion of iron powder and dust.

Description

Technical Field

[0001] This invention relates to the field of reduced iron powder processing technology, specifically to a dust removal structure for magnetic separation of reduced iron powder. Background Technology

[0002] In the production and processing of reduced iron powder, magnetic separation is a key step in removing magnetic impurities and improving the purity of the iron powder. However, this step is often accompanied by the generation of a large amount of dust. This dust not only contains fine iron powder particles, but also impurities such as gangue powder and fuel residue left over from the production process. If it cannot be effectively collected and treated, it will not only waste iron powder resources, but also seriously pollute the production environment and endanger the respiratory health of operators. At the same time, dust accumulation may also cause equipment failure and affect the continuity and stability of the magnetic separation process.

[0003] Most existing equipment separates the dust removal and magnetic separation processes. Iron powder is prone to secondary dust generation during the transfer process, and the fine dust remaining in the iron powder after magnetic separation is difficult to capture efficiently. On the other hand, the screening and magnetic separation of traditional dust removal equipment have poor coordination. Iron powder particles are easily adsorbed on the surface of the magnetic separation roller, resulting in a buildup and a decrease in magnetic separation efficiency. At the same time, the filter components are easily clogged by dust, requiring frequent shutdowns for cleaning, which seriously reduces production efficiency. The cleaning of iron powder on the surface of the magnetic roller is mostly done by manual scraping, which is cumbersome and incomplete. Summary of the Invention

[0004] The purpose of this invention is to provide a dust removal structure for magnetic separation of reduced iron powder. It aims to design an integrated device that combines screening, magnetic separation, dust removal, and cleaning functions. The screening and magnetic separation mechanism with multiple sets of magnetic rollers working together improves the thoroughness of the separation between iron powder and dust. The automatic cleaning mechanism solves the problems of iron powder accumulation on the magnetic rollers and clogging of the filter components. At the same time, the adjustable sealing extension structure enhances the adaptability of the equipment and the dust sealing performance, solving the pain points of poor dust control, low efficiency, and cumbersome maintenance of existing equipment.

[0005] To achieve the above effects, the technical solution adopted by the present invention is as follows: a dust removal structure for magnetic separation of reduced iron powder, comprising: a dust removal box, a second guide plate fixedly connected inside the dust removal box, a sealing extension mechanism and a filter mechanism provided on one side of the dust removal box, the sealing extension mechanism including a first air inlet pipe fixedly connected to one side of the dust removal box, a sealing box fixedly connected to the lower surface of the first air inlet pipe, an extension pipe movably connected inside the sealing box, a feed hopper fixedly connected to the lower surface of the extension pipe, toothed plates fixedly connected to the left and right sides of the extension pipe, a pair of first drive motors fixedly connected to the left and right sides of the sealing box, a pair of first rotating shafts fixedly connected to one side of the pair of first drive motors, a pair of meshing gears fixedly connected to the outer wall of the pair of first rotating shafts, and a sealing plate fixedly connected to the upper surface of the extension pipe; The filtration mechanism includes a first mounting plate fixedly connected inside the dust collection box. A baffle plate is fixedly connected to the lower surface of the first mounting plate. A plurality of first through holes are opened inside the first mounting plate. A plurality of first fixing brackets are fixedly connected to the upper surface of the first mounting plate. A plurality of support plates are fixedly connected to the upper surface of the plurality of first fixing brackets. A plurality of filter cartridges are detachably connected to the lower surface of the first mounting plate. A plurality of second air inlet pipes are movably connected inside the plurality of filter cartridges. Five diverter pipes are fixedly connected to the upper surface of the plurality of second air inlet pipes. A plurality of sealing rings are fixedly connected to the outer wall of the plurality of second air inlet pipes. A pair of first connecting rods are fixedly connected to the outer wall of the plurality of second air inlet pipes. A pair of air blowing pipes are fixedly connected inside the pair of first connecting rods.

[0006] Preferably, the teeth of the pair of meshing gears are connected to the tooth grooves of the toothed plate, the second air inlet pipe extends into the interior of the filter cartridge, and the diverter pipe penetrates the interior of the dust collector.

[0007] Preferably, the dust collection box is equipped with a cleaning mechanism inside. The cleaning mechanism includes a ramp guide plate fixedly connected inside the dust collection box. The ramp guide plate has several filter holes inside. A pair of second drive motors are fixedly connected to one side of the dust collection box. A pair of second rotating shafts are fixedly connected to one side of the pair of second drive motors. A pair of cleaning rollers are fixedly connected to the outer wall of the pair of second rotating shafts.

[0008] Preferably, the pair of cleaning rollers are in contact with the inclined surfaces of the ramp guide plate.

[0009] Preferably, the dust collector is equipped with a screening and magnetic separation mechanism inside. The screening and magnetic separation mechanism includes a screening plate fixedly connected inside the dust collector, an iron powder feeding plate fixedly connected to one side of the screening plate, several second fixed frames fixedly connected to the upper surface of the screening plate, a third drive motor fixedly connected to one side of the dust collector, five third rotating shafts movably connected to one side of the second fixed frames, five magnetic rollers fixedly connected to the outer wall of the third rotating shafts, three first drive belts drivingly connected to the outer walls of the three third rotating shafts, two second drive belts drivingly connected to the outer walls of the two third rotating shafts, a fixed shaft fixedly connected to one side of the second fixed frame, a fixed rod fixedly connected to one side of the fixed shaft, a scraper fixedly connected to one side of the fixed rod, and a dust discharge plate fixedly connected to one side of the dust collector.

[0010] Preferably, one side of the iron powder feeding plate is connected to one side of the screening plate and is located below the scraper, and the heights of the five second fixing frames are different.

[0011] Preferably, the dust collector is equipped with a striking mechanism inside. The striking mechanism includes a first guide plate fixedly connected inside the dust collector. The first guide plate has a pair of second through holes inside. A pair of fourth drive motors are fixedly connected to one side of the dust collector. A pair of fourth rotating shafts are fixedly connected to one side of the pair of fourth drive motors. A pair of cam disks are fixedly connected to one side of the pair of fourth rotating shafts. A pair of second connecting rods are fixedly connected to one side of the pair of cam disks. A pair of connecting rings are movably connected to the outer walls of the pair of second connecting rods. A pair of adjusting blocks are movably connected to the outer walls of the connecting rings. A pair of first striking rods are fixedly connected to the upper surfaces of the pair of adjusting blocks. A pair of second mounting plates are fixedly connected to the outer walls of the pair of first striking rods. A pair of second striking rods are fixedly connected to the upper surfaces of the pair of second mounting plates.

[0012] Preferably, the output end of the first striking rod is movably connected to the lower surface of the ramp guide plate, and the output end of the second striking rod is movably connected to the lower surface of the first guide plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The sealing extension mechanism uses a first drive motor to drive a first rotating shaft, which in turn drives a meshing gear. The meshing transmission between the gear and the toothed plate enables the extension tube to be raised and lowered within the sealed box, allowing the feed hopper to precisely connect to magnetic separators at different heights. Furthermore, the sealing plate at the top of the extension tube fits tightly against the inner wall of the sealed box, forming a fully enclosed feeding channel in conjunction with the fixed connection between the first air inlet pipe and the dust collector. This effectively prevents secondary dust generation during iron powder transfer. Through the screening and magnetic separation mechanism, the linkage between the first and second drive belts drives the magnetic rollers on the five third rotating shafts to rotate synchronously. Multiple sets of magnetic rollers, in conjunction with the screening plate, achieve multi-level magnetic separation of iron powder, precisely adsorbing magnetic iron powder from the mixed dust. The fixed shaft and the connecting rod cause the scraper to fit tightly against the surface of the magnetic rollers, cleaning the iron powder adsorbed by the rollers in real time, preventing iron powder accumulation from affecting the magnetic separation effect. The cleaned iron powder is collected and recycled via the iron powder discharge plate, while the separated dust is guided by the second guide plate to the dust discharge plate for discharge, achieving efficient separation of iron powder and dust.

[0014] Through the cleaning mechanism, the magnetically separated dust enters the inclined guide plate area with the airflow. The filter holes can perform preliminary filtration of the dust, intercepting larger dust particles. The second drive motor drives the second rotating shaft to rotate the cleaning roller. The cleaning roller is in close contact with the inclined surface of the inclined guide plate, which can clean the dust accumulated on the surface of the filter holes in real time, effectively preventing the problem of increased airflow resistance caused by filter hole blockage and ensuring smooth airflow inside the dust collector. Through the filtration mechanism, the dust-laden airflow after preliminary filtration is distributed to multiple second air inlets through the diversion pipe, and is evenly introduced into the filter cartridge through the first through hole on the first mounting plate. The baffle plate slows down the airflow velocity, allowing fine dust to fully adhere to the inner wall of the filter cartridge, achieving deep purification. The sealing ring strengthens the sealing connection between the second air inlet pipe and the filter cartridge, preventing unfiltered airflow from leaking out. The blowing pipe fixed by the first connecting rod can be connected to a high-pressure airflow to periodically back-blow and clean the inner wall of the filter cartridge. An air outlet is opened on one side of the blowing pipe, and the first connecting rod rotates under the action of the gas discharged from the air outlet and the turbine force. Through the setting of the knocking mechanism, the fourth drive motor drives the cam disk on the fourth rotating shaft to rotate. Through the transmission of the second connecting rod and the connecting ring, the drive adjustment block drives the first knocking rod and the second knocking rod to reciprocate. The first knocking rod knocks the inclined guide plate periodically, causing the attached dust to fall off. The second knocking rod knocks the first guide plate to prevent dust from accumulating on its surface. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the sealing extension mechanism structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the filter mechanism structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the main body of an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the filter cartridge according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the screening and magnetic separation mechanism structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the striking mechanism structure according to an embodiment of the present invention.

[0017] In the diagram, 1. Dust collector; 2. First air inlet pipe; 3. Sealing box; 4. Extension pipe; 5. Feed hopper; 6. Gear plate; 7. First drive motor; 8. First rotating shaft; 9. Meshing gear; 10. Sealing plate; 11. First mounting plate; 12. Baffle plate; 13. First through hole; 14. First fixing frame; 15. Support plate; 16. Filter cylinder; 17. Second air inlet pipe; 18. Diverter pipe; 19. Sealing ring; 20. First connecting rod; 21. Air blowing pipe; 22. Inclined guide plate; 23. Filter hole; 24. Second drive motor; 25. Second rotating shaft; 26. Cleaning roller; 27. Screening plate; 28. Iron powder feeding plate; 29. ​​Second fixed frame; 30. Third drive motor; 31. Third rotating shaft; 32. Magnetic roller; 33. First transmission belt; 34. Second transmission belt; 35. Fixed shaft; 36. Fixed rod; 37. Scraper; 38. First guide plate; 39. Second through hole; 40. Fourth drive motor; 41. Fourth rotating shaft; 42. Cam plate; 43. Second connecting rod; 44. Connecting ring; 45. Adjusting block; 46. First striking rod; 47. Second mounting plate; 48. Second striking rod; 49. Second guide plate; 50. Dust discharge plate. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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] Example 1: Please see Figures 1 to 7 As shown, this embodiment discloses a dust removal structure for magnetic separation of reduced iron powder, including: a dust collection box 1, a second guide plate 49 fixedly connected inside the dust collection box 1, a sealing extension mechanism and a filter mechanism provided on one side of the dust collection box 1, the sealing extension mechanism including a first air inlet pipe 2, a sealing box 3, an extension pipe 4, a feed hopper 5, a toothed plate 6, a first drive motor 7, a first rotating shaft 8, a meshing gear 9 and a sealing plate 10, the first air inlet pipe 2 fixedly connected to one side of the dust collection box 1, and the lower surface of the first air inlet pipe 2 fixedly connected to... There is a sealed box 3, and an extension tube 4 is movably connected inside the sealed box 3. A feed hopper 5 is fixedly connected to the lower surface of the extension tube 4. A toothed plate 6 is fixedly connected to the left and right sides of the extension tube 4. A pair of first drive motors 7 are fixedly connected to the left and right sides of the sealed box 3. A pair of first rotating shafts 8 are fixedly connected to one side of the pair of first drive motors 7. A pair of meshing gears 9 are fixedly connected to the outer wall of the pair of first rotating shafts 8. A sealing plate 10 is fixedly connected to the upper surface of the extension tube 4. The teeth of the pair of meshing gears 9 are connected to the tooth grooves of the toothed plate 6. The first drive motor 7 drives the first rotating shaft 8 to rotate synchronously, and the meshing gear 9 on the outer wall of the first rotating shaft 8 rotates accordingly. The teeth of the meshing gear 9 mesh with the tooth grooves of the toothed plates 6 fixed on both sides of the extension tube 4. The rotational motion of the gear is converted into the linear motion of the extension tube 4, so that the extension tube 4 rises and falls smoothly along the internal cavity of the sealing box 3 until the feed hopper 5 fixed on the lower surface of the extension tube 4 is precisely aligned with the top of the magnetic separator. The sealing plate 10 on the upper surface of the extension tube 4 is tightly fitted with the inner wall of the sealing box 3. Together with the fixed connection between the first air inlet pipe 2 and the dust collector 1, a fully enclosed material channel is formed from the feed hopper 5 to the first air inlet pipe 2 and then to the dust collector 1. The iron powder and dust mixture enters the extension tube 4 through the feed hopper 5 and then enters the dust collector 1 through the sealing box 3 and the first air inlet pipe 2 in sequence.

[0020] The filtration mechanism includes a first mounting plate 11, a baffle plate 12, a first through hole 13, a first fixing bracket 14, a support plate 15, a filter cylinder 16, a second air inlet pipe 17, a diverter pipe 18, a sealing ring 19, a first connecting rod 20, and an air blowing pipe 21. The first mounting plate 11 is fixedly connected inside the dust collector 1. The baffle plate 12 is fixedly connected to the lower surface of the first mounting plate 11. Several first through holes 13 are opened inside the first mounting plate 11. Several first fixing brackets 14 are fixedly connected to the upper surface of the first mounting plate 11. Several supports are fixedly connected to the upper surface of the several first fixing brackets 14. The lower surface of the first mounting plate 11 is detachably connected to a plurality of filter cartridges 16. The interior of the plurality of filter cartridges 16 is movably connected to a plurality of second air inlet pipes 17. The upper surface of the plurality of second air inlet pipes 17 is fixedly connected to five diverter pipes 18. The outer wall of the plurality of second air inlet pipes 17 is fixedly connected to a plurality of sealing rings 19. The outer wall of the plurality of second air inlet pipes 17 is fixedly connected to a pair of first connecting rods 20. The interior of the pair of first connecting rods 20 is fixedly connected to a pair of air blowing pipes 21. The second air inlet pipes 17 extend into the interior of the filter cartridges 16. The diverter pipes 18 penetrate the interior of the dust collection box 1. The first connecting rod 20 fixes the air blowing pipe 21 to the outer wall of the second air inlet pipe 17. When it is necessary to clean the dust attached to the inner wall of the filter cartridge 16, high-pressure airflow is introduced into the air blowing pipe 21. The airflow is ejected at high speed through the air outlet opened on one side of the air blowing pipe 21. The turbine force generated by the gas injection drives the first connecting rod 20 to rotate around the second air inlet pipe 17, thereby driving the air blowing pipe 21 to make a circular motion along the inner wall of the filter cartridge 16, so that the high-pressure airflow can fully cover every area of ​​the inner wall of the filter cartridge, effectively removing the dust dead corners that are easily left by traditional dust removal.

[0021] The dust collection box 1 is equipped with a cleaning mechanism, which includes a ramp guide plate 22, filter holes 23, a second drive motor 24, a second rotating shaft 25, and cleaning rollers 26. The ramp guide plate 22 is fixedly connected inside the dust collection box 1. The ramp guide plate 22 has several filter holes 23 inside. A pair of second drive motors 24 are fixedly connected to one side of the dust collection box 1. A pair of second rotating shafts 25 are fixedly connected to one side of the pair of second drive motors 24. A pair of cleaning rollers 26 are fixedly connected to the outer wall of the pair of second rotating shafts 25. The pair of cleaning rollers 26 are in contact with the inclined surface of the ramp guide plate 22. The inclined guide plate 22 fixed inside the dust collector 1 has an inclined structure, which facilitates the flow of dust along the inclined surface. The several filter holes 23 inside can perform preliminary classification of the dust after magnetic separation, effectively intercepting large dust particles carried in the airflow and preventing them from directly entering the filter mechanism and causing filter cartridge blockage. The second drive motor 24 drives the second rotating shaft 25 to rotate, so that the cleaning roller 26 on the outer wall of the rotating shaft rotates synchronously. Since the cleaning roller 26 is completely in contact with the inclined surface of the inclined guide plate 22, a double cleaning coverage is formed.

[0022] The dust collector 1 is equipped with a screening and magnetic separation mechanism, which includes a screening plate 27, an iron powder feeding plate 28, a second fixed frame 29, a third drive motor 30, a third rotating shaft 31, a magnetic roller 32, a first transmission belt 33, a second transmission belt 34, a fixed shaft 35, a fixed rod 36, a scraper 37, and a dust discharge plate 50. The screening plate 27 is fixedly connected inside the dust collector 1. The iron powder feeding plate 28 is fixedly connected to one side of the screening plate 27. Several second fixed frames 29 are fixedly connected to the upper surface of the screening plate 27. The third drive motor 30 is fixedly connected to one side of the dust collector 1. Five second fixed frames 29 are movably connected to one side of the second fixed frames 29. The third rotating shaft 31 has five magnetic rollers 32 fixedly connected to its outer wall. The outer walls of the three third rotating shafts 31 are connected to three first transmission belts 33. The outer walls of the two third rotating shafts 31 are connected to two second transmission belts 34. A fixed shaft 35 is fixedly connected to one side of the second fixed frame 29. A fixed rod 36 is fixedly connected to one side of the fixed shaft 35. A scraper 37 is fixedly connected to one side of the fixed rod 36. A dust discharge plate 50 is fixedly connected to one side of the dust collection box 1. One side of the iron powder feeding plate 28 is connected to one side of the screening plate 27 and is located below the scraper 37. The heights of the five second fixed frames 29 are different. The third drive motor 30 provides power, which is linked by three first transmission belts 33 to three sets of third rotating shafts 31 and two second transmission belts 34 to two sets of third rotating shafts 31, so that the five magnetic rollers 32 rotate synchronously in the same direction. This ensures that the iron powder is always under the action of a stable magnetic field during the flow process, and avoids the accumulation of iron powder due to the difference in rotation speed. The fixed shaft 35 rigidly connects the fixed rod 36 to the second fixed frame 29, so that the scraper 37 is always in close contact with the surface of the magnetic roller 32. The position of the scraper 37 is adapted to the stepped magnetic roller 32, so that the iron powder adsorbed by each magnetic roller 32 can be scraped off in real time. The iron powder feeding plate 28 connected to one side of the screening plate 27 is located just below the scraper 37. The scraped iron powder can fall directly into the feeding plate for centralized recycling and avoid secondary mixing.

[0023] The dust collector 1 is equipped with a striking mechanism, which includes a first guide plate 38, a second through hole 39, a fourth drive motor 40, a fourth rotating shaft 41, a cam plate 42, a second connecting rod 43, a connecting ring 44, an adjusting block 45, a first striking rod 46, a second mounting plate 47, and a second striking rod 48. The first guide plate 38 is fixedly connected inside the dust collector 1. The first guide plate 38 has a pair of second through holes 39 inside. A pair of fourth drive motors 40 are fixedly connected to one side of the dust collector 1. A pair of fourth rotating shafts 41 are fixedly connected to one side of the pair of fourth drive motors 40. A pair of convex... A pair of cam discs 42 are fixedly connected to one side of a pair of second connecting rods 43. A pair of connecting rings 44 are movably connected to the outer wall of the pair of second connecting rods 43. A pair of adjusting blocks 45 are movably connected to the outer wall of the connecting rings 44. A pair of first striking rods 46 are fixedly connected to the upper surface of the pair of adjusting blocks 45. A pair of second mounting plates 47 are fixedly connected to the outer wall of the pair of first striking rods 46. A pair of second striking rods 48 are fixedly connected to the upper surface of the pair of second mounting plates 47. The output end of the first striking rod 46 is movably connected to the lower surface of the ramp guide plate 22. The output end of the second striking rod 48 is movably connected to the lower surface of the first guide plate 38. The fourth drive motor 40 drives the fourth rotating shaft 41 to rotate the cam disk 42. Through the second connecting rod 43 and the connecting ring 44, the rotational motion of the cam is converted into the reciprocating linear motion of the adjusting block 45, which in turn drives the first striking rod 46 and the second striking rod 48 to perform high-frequency striking actions simultaneously. The output end of the first striking rod 46 is precisely connected to the lower surface of the inclined guide plate 22 to knock off the dust that is still stuck after the cleaning roller 26 has cleaned it. In particular, it can remove the fine dust stuck in the filter hole 23. The second striking rod 48 strikes the lower surface of the first guide plate 38 to prevent dust from accumulating on the surface of the guide plate and clogging the second through hole 39.

[0024] When using this invention, the position of the feed hopper 5 is first adjusted by the sealing extension mechanism, and a pair of first drive motors 7 are started. The motors drive the first rotating shaft 8 and the outer wall meshing gear 9 to rotate. The meshing gear 9 is driven by the meshing of the tooth grooves of the toothed plates 6 on both sides of the extension tube 4, and the rotational motion of the gear is converted into the linear lifting motion of the extension tube 4, so that the extension tube 4 moves smoothly down along the internal cavity of the sealing box 3 until the feed hopper 5 on the lower surface of the extension tube 4 is precisely placed above the magnetic separator. The baffle plate 12 on the lower surface of the first mounting plate 11 inside the dust collector 1 first buffers the high-speed dust-laden airflow, significantly reducing the airflow velocity and preventing uneven dust particle diffusion caused by airflow impact. Simultaneously, it allows the dust particles in the airflow to move more stably towards the filter cartridges 16. The buffered dust-laden airflow directly contacts the several detachably connected filter cartridges 16 on the lower surface of the first mounting plate 11. During the airflow's penetration of the filter cartridges 16, dust is efficiently intercepted and adhered to by the inner wall of the filter cartridges 16. When the dust accumulates to a certain extent on the inner wall of the filter cartridges 16, the diversion pipe 18 and the second air inlet pipe 17 are activated, and an external high-pressure air source passes through the five diversion pipes 18 and 17 of the dust collector 1. The flow pipe 18 evenly distributes the high-pressure airflow to each of the second air inlet pipes 17. The second air inlet pipes 17 extend into the interior of the filter cylinder 16, delivering the high-pressure airflow to the blowing pipe 21 fixed by a pair of first connecting rods 20. The high-pressure airflow is ejected at high speed through the air outlet on one side of the blowing pipe 21. The turbine force generated by the gas jet drives the first connecting rod 20 to rotate around the second air inlet pipe 17, thereby driving the blowing pipe 21 to make a circular motion along the inner wall of the filter cylinder 16. The high-pressure airflow completely covers the inner wall of the filter cylinder 16, thoroughly blowing off the attached dust. The blown-off dust falls to the cleaning mechanism area under the action of gravity. The inclined guide plate 22 has an inclined structure, guiding dust to flow along the inclined surface. Several filter holes 23 inside the plate classify the dust, intercepting larger dust particles. A second drive motor 24 drives a second rotating shaft 25 and an outer wall cleaning roller 26 to rotate. The cleaning roller 26 is completely in contact with the inclined surface of the inclined guide plate 22, performing double cleaning of the dust accumulated on the surface of the inclined guide plate 22 and inside the filter holes 23. The scraped dust falls down the inclined surface. A fourth drive motor 40 drives a fourth rotating shaft 41 and a cam disk 42 to rotate. The cam disk 42... Through the movable connection between the second connecting rod 43 and the connecting ring 44, the rotational motion is converted into the reciprocating linear motion of the adjusting block 45, which in turn drives a pair of first striking rods 46 to strike the lower surface of the inclined guide plate 22 at high frequency, shaking off the sticky dust that the cleaning roller 26 has not cleaned. At the same time, the first striking rods 46 drive the second striking rods 48 to strike the lower surface of the first guide plate 38 synchronously through the second mounting plate 47, preventing dust from accumulating on the surface of the first guide plate 38 and clogging the second through hole 39, and ensuring that the dust enters the screening magnetic separation mechanism smoothly through the second through hole 39. The third drive motor 30 is started. The third drive motor 30 drives three sets of third rotating shafts 31 through three first transmission belts 33 and two sets of third rotating shafts 31 through two second transmission belts 34. This drives the five third rotating shafts 31 and the outer wall magnetic rollers 32 to rotate synchronously and in the same direction. Because the heights of the several second fixed frames 29 supporting the magnetic rollers 32 are different, the five magnetic rollers 32 are distributed in a stepped and staggered manner. This allows the dust to form multi-angle and long-path magnetic field contact with the surface of the magnetic rollers 32 when it flows on the screening plate 27. The magnetic iron powder in the dust is fully adsorbed by the magnetic roller 32. The scraper 37, which is fixed by the fixed shaft 35 on the second fixed frame 29 through the fixed rod 36, is always in close contact with the surface of the magnetic roller 32. As the magnetic roller 32 rotates, it scrapes off the adsorbed iron powder in real time. The scraped iron powder falls directly into the iron powder discharge plate 28 below the scraper 37, realizing the centralized recovery of iron powder. The non-magnetic dust that is not adsorbed flows along the gap between the screening plate 27 and the magnetic roller 32 and is discharged through the dust discharge plate 50 on one side of the dust collector box 1.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A dust removal structure for magnetic separation of reduced iron powder, comprising: A dust collector (1) is provided with a second guide plate (49) fixedly connected inside the dust collector (1). The dust collector (1) is provided with a screening magnetic separation mechanism and a cleaning mechanism. The screening magnetic separation mechanism includes a screening plate (27) fixedly connected inside the dust collector (1). An iron powder feeding plate (28) is fixedly connected to one side of the screening plate (27). Several second fixing frames (29) are fixedly connected to the upper surface of the screening plate (27). A third drive motor (30) is fixedly connected to one side of the dust collector (1). Five second fixing frames (29) are movably connected to one side of the second fixing frames (29). Three rotating shafts (31), five magnetic rollers (32) are fixedly connected to the outer wall of the third rotating shaft (31), three first transmission belts (33) are driven to the outer wall of the three third rotating shafts (31), two second transmission belts (34) are driven to the outer wall of the two third rotating shafts (31), a fixed shaft (35) is fixedly connected to one side of the second fixed frame (29), a fixed rod (36) is fixedly connected to one side of the fixed shaft (35), a scraper (37) is fixedly connected to one side of the fixed rod (36), and a dust discharge plate (50) is fixedly connected to one side of the dust collection box (1).

2. The dust removal structure for magnetic separation of reduced iron powder according to claim 1, characterized in that: The cleaning mechanism includes a ramp guide plate (22) fixedly connected inside the dust collector (1). The ramp guide plate (22) has several filter holes (23) inside. A pair of second drive motors (24) are fixedly connected to one side of the dust collector (1). A pair of second rotating shafts (25) are fixedly connected to one side of the pair of second drive motors (24). A pair of cleaning rollers (26) are fixedly connected to the outer wall of the pair of second rotating shafts (25). The pair of cleaning rollers (26) are in close contact with the inclined surface of the ramp guide plate (22). One side of the iron powder feeding plate (28) is connected to one side of the screening plate (27) and is located below the scraper (37).

3. The dust removal structure for magnetic separation of reduced iron powder according to claim 1, characterized in that: A sealing extension mechanism is provided on one side of the dust collector (1). The sealing extension mechanism includes a first air inlet pipe (2) fixedly connected to one side of the dust collector (1). A sealing box (3) is fixedly connected to the lower surface of the first air inlet pipe (2). An extension pipe (4) is movably connected inside the sealing box (3). A feed hopper (5) is fixedly connected to the lower surface of the extension pipe (4). A toothed plate (6) is fixedly connected to the left and right sides of the extension pipe (4). A pair of first drive motors (7) are fixedly connected to the left and right sides of the sealing box (3). A pair of first rotating shafts (8) are fixedly connected to one side of the pair of first drive motors (7). A pair of meshing gears (9) are fixedly connected to the outer wall of the pair of first rotating shafts (8). A sealing plate (10) is fixedly connected to the upper surface of the extension pipe (4).

4. The dust removal structure for magnetic separation of reduced iron powder according to claim 3, characterized in that: The teeth of the pair of meshing gears (9) are connected to the tooth grooves of the toothed plate (6).

5. The dust removal structure for magnetic separation of reduced iron powder according to claim 1, characterized in that: The dust collection box (1) is equipped with a filter mechanism inside. The filter mechanism includes a first mounting plate (11) fixedly connected inside the dust collection box (1). A baffle plate (12) is fixedly connected to the lower surface of the first mounting plate (11). A plurality of first through holes (13) are opened inside the first mounting plate (11). A plurality of first fixing brackets (14) are fixedly connected to the upper surface of the first mounting plate (11). A plurality of support plates (15) are fixedly connected to the upper surface of the plurality of first fixing brackets (14). The lower surface of the filter is detachably connected to several filter cylinders (16), and several second air inlet pipes (17) are movably connected inside the filter cylinders (16). Five diverter pipes (18) are fixedly connected to the upper surface of the filter cylinders (17). Several sealing rings (19) are fixedly connected to the outer wall of the filter cylinders (17). A pair of first connecting rods (20) are fixedly connected to the outer wall of the filter cylinders (17). A pair of blowing pipes (21) are fixedly connected inside the pair of first connecting rods (20).

6. A dust removal structure for magnetic separation of reduced iron powder according to claim 5, characterized in that: The second air inlet pipe (17) extends into the interior of the filter cartridge (16), and the diversion pipe (18) penetrates the interior of the dust collector (1).

7. The dust removal structure for magnetic separation of reduced iron powder according to claim 1, characterized in that: The dust collector (1) is equipped with a striking mechanism inside. The striking mechanism includes a first guide plate (38) fixedly connected inside the dust collector (1). The first guide plate (38) has a pair of second through holes (39) inside. A pair of fourth drive motors (40) are fixedly connected to one side of the dust collector (1). A pair of fourth rotating shafts (41) are fixedly connected to one side of the pair of fourth drive motors (40). A pair of cam disks (42) are fixedly connected to one side of the pair of fourth rotating shafts (41). A pair of second connecting rods (43) are fixedly connected to one side of the pair of cam disks (42). A pair of connecting rings (44) are movably connected to the outer wall of the pair of second connecting rods (43). A pair of adjusting blocks (45) are movably connected to the outer wall of the connecting rings (44). A pair of first striking rods (46) are fixedly connected to the upper surface of the pair of adjusting blocks (45). A pair of second mounting plates (47) are fixedly connected to the outer wall of the pair of first striking rods (46). A pair of second striking rods (48) are fixedly connected to the upper surface of the pair of second mounting plates (47).

8. A dust removal structure for magnetic separation of reduced iron powder according to claim 7, characterized in that: The output end of the first striking rod (46) is movably connected to the lower surface of the ramp guide plate (22), and the output end of the second striking rod (48) is movably connected to the lower surface of the first guide plate (38).

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