A semi-brittle corundum abrasive layered magnetic separation device

Abstract

The utility model relates to abrasive processing technical field especially relates to a kind of semi brittle corundum abrasive layered magnetic separation device. Including leg and shell, the top of several legs is jointly fixed with shell, further including support, the side of shell is fixed with support, the top of support is fixed with motor, the output shaft of motor is drivingly connected with synchronous belt, the inner wall of synchronous belt is provided with several arc grooves. The utility model realizes the soft opening and closure of rotating plate by the mechanical linkage of rotating rod, pull rope and second spring, avoids the breakage and damage caused by traditional vibration blanking to high hardness angular sharp semi brittle corundum abrasive, ensures the original integrity of material, meanwhile, the intermittent engagement of the arc groove of synchronous belt and first protrusion ensures the constant amount of each blanking, provides stable, uniform material layer for subsequent magnetic separation process, fundamentally improves the accuracy and separation effect of magnetic separation.

Description

Technical Field

[0001] This utility model relates to the field of abrasive processing technology, and in particular to a layered magnetic separation device for semi-brittle corundum abrasive. Background Technology

[0002] Corundum abrasives, with their high hardness, high strength and good wear resistance, are widely used in precision grinding, polishing and other industrial fields. Among them, semi-brittle corundum, as a special type of corundum abrasive, has a crystal structure that maintains high hardness while having a certain degree of brittleness, making it particularly suitable for applications with high requirements for grinding efficiency and surface finish.

[0003] In the production of semi-brittle corundum abrasives, equipment wear and the introduction of magnetic impurities such as iron filings into the raw materials not only severely affect the final quality of the abrasives but also cause workpiece scratches and tool wear. Therefore, efficient end-stage magnetic separation is crucial for ensuring quality. However, existing magnetic separation devices are generally single-function and fragmented, only capable of magnetic separation but unable to efficiently collect magnetic materials. Furthermore, they are difficult to integrate with subsequent screening processes, resulting in low overall finishing efficiency, high costs, and susceptibility to secondary contamination. Therefore, a layered magnetic separation device for semi-brittle corundum abrasives is urgently needed to solve these problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies in efficiently collecting magnetic materials and low efficiency, a semi-brittle corundum abrasive layered magnetic separation device is provided.

[0005] The technical solution of this utility model is as follows: a semi-brittle corundum abrasive layered magnetic separation device, including legs and a shell, with the tops of several legs being fixedly connected to the shell. The device is characterized by further including a support, with the support fixedly connected to one side of the shell, and a motor fixedly connected to the top of the support. The output shaft of the motor is driven by a synchronous belt, the inner wall of which has several arc-shaped grooves. A first rotating shaft is driven by the side of the synchronous belt away from the output shaft of the motor, the outer wall of which has irregular grooves, and the inner wall of which has a first spring fixedly connected. The other end of the first spring is fixedly connected to a first protrusion, which engages with the arc-shaped grooves on the synchronous belt. A feeding unit is fixedly connected to the first rotating shaft. A magnetic separation mechanism for magnetic separation of semi-brittle corundum abrasive is installed at the output end of the motor. The magnetic separation mechanism is located inside the shell, and a collection unit is installed inside the shell, located below the magnetic separation mechanism. A detachable discharge gate is installed on one side of the shell.

[0006] In a preferred embodiment of this utility model, the unloading unit includes an unloading box, which is fixedly connected to the top of the outer shell. Several rotating rods are rotatably connected to the top of the inner wall of the outer shell. A rotating plate is fixedly connected to the outer wall of each of the rotating rods. The rotating rod located at the center has its end near the motor fixedly connected to a first rotating shaft, which passes through the outer shell. A second spring is sleeved on both ends of each of the rotating rods. One end of the second spring is fixedly connected to the rotating plate, and the other end is fixedly connected to the inner wall of the outer shell. Pull ropes are provided at both ends of adjacent rotating rods. Several pull ropes pass through the gap between adjacent second springs and do not contact each other with the second springs. The connection points of the pull ropes and the rotating rods are arranged in a zigzag path in the axial direction of the rotating rods.

[0007] In a preferred embodiment of the present invention, the feeding unit further includes a protective cover. Both ends of several rotating rods are provided with protective covers. Several rotating rods located on the same side are rotatably connected to the same protective cover. One side of the protective cover is fixedly connected to the inner wall of the outer shell.

[0008] In a preferred embodiment of the present invention, the magnetic separation mechanism includes a first toothed gear, the output shaft of the motor is fixedly connected to the first toothed gear, a synchronous belt is located between the motor and the first toothed gear, the first toothed gear is meshed with a second gear, a second rotating shaft is fixedly connected to the center of one side of the second gear, the outer wall of the second rotating shaft penetrates the outer shell near the side of the second gear, the other end of the second rotating shaft is rotatably connected to the inner wall of the outer shell, a magnetic suction plate is fixedly connected to the outer wall of the second rotating shaft, and a guide is fixedly connected to the inner wall of the outer shell.

[0009] In a preferred embodiment of this utility model, the collecting unit includes guide grooves, and guide grooves are installed through both sides of the outer shell. Guide rods are fixedly connected to the inner walls of both guide grooves. One set of guide rods is slidably connected to a driving component at the end near the motor. The driving component is located inside the guide groove and is slidably connected to it. The other set of guide rods is slidably connected to a slider at the end near the motor. The slider is slidably connected to its corresponding guide groove. A collecting box is fixedly connected between the driving component and the slider. A scraper is installed on the top of the collecting box. The inside of the collecting box is provided with two collecting grooves. The two collecting grooves are symmetrical about the scraper. A transmission rod is fixedly connected to the bottom center of the driving component. A toggle block is fixedly connected to the bottom end of the transmission rod.

[0010] In a preferred embodiment of this utility model, the collection unit further includes a collection plate. The collection plate is installed on the bottom of the inner wall of the outer shell. A handle is fixed to the side of the collection plate away from the motor. An elongated groove that mates with the handle is opened on the outer wall of the outer shell. Support beams are symmetrically installed on the top of the collection plate. The side of each support beam that is away from each other is slidably connected to the inner wall of the outer shell. A sliding groove is opened on the top of each support beam. A spring plate is installed inside the support beam on the side away from the drive component.

[0011] In a preferred embodiment of this utility model, the collecting unit further includes a sliding plate. Each sliding groove has a sliding plate slidably connected to its inner wall. The sliding plate located on the side of the driving member abuts against the sliding groove on the side near the actuating block, and a plurality of second protrusions are fixedly connected to this side. The sliding plate located on the side of the slider abuts against the spring plate on the side near the slider. Each set of sliding plates has a guide plate fixedly connected to the side of each other. The two guide plates are symmetrically arranged. A screen is fixedly connected to the top of both sets of sliding plates. Guide strips are symmetrically fixed to the top of the screen. The second protrusion is located between the screen and the support beam, and the second protrusion is slidably connected to the actuating block. Beneficial effects

[0012] 1. This utility model achieves smooth opening and closing of the rotating plate through the mechanical linkage of the rotating rod, the pull rope, and the second spring, avoiding the breakage and damage caused to the high-hardness, sharp-edged semi-brittle corundum abrasive by traditional vibration feeding, thus ensuring the original integrity of the material. At the same time, the intermittent engagement between the arc groove of the synchronous belt and the first protrusion ensures a constant amount of material for each feeding, providing a stable and uniform material layer for the subsequent magnetic separation process, fundamentally improving the accuracy and separation effect of magnetic separation.

[0013] 2. This invention achieves highly automated continuous operation through the periodic flipping of the magnetic plate and the scraping and collection of magnetic materials, as well as the separation of non-magnetic materials. It eliminates the need for manual intervention in complex magnetic separation and screening processes, significantly reducing the skill requirements and labor intensity of operators, and improving overall magnetic separation efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the discharge gate structure of this utility model; Figure 3 This is a schematic diagram of the guide component structure of this utility model; Figure 4 This is a schematic diagram of the rotating plate structure of this utility model; Figure 5 This is a schematic diagram of the synchronous belt structure of this utility model; Figure 6 This is a schematic diagram of the collection box structure of this utility model; Figure 7 This is a schematic diagram of the screen structure of this utility model; Figure 8 This is a schematic diagram of the sliding groove structure of this utility model.

[0015] The above-mentioned attached drawings include the following reference numerals: 1-support leg, 2-outer shell, 3-support, 4-motor, 5-first toothed gear, 6-synchronous belt, 7-first rotating shaft, 71-first spring, 72-first protrusion, 8-rotating rod, 9-rotating plate, 10-pull rope, 11-second spring, 12-protective cover, 13-second gear, 14-second rotating shaft, 15-magnetic suction plate, 16-guide component, 17-guide groove, 18-guide rod, 19-driving component, 191-slider, 20-collecting box, 201-collecting groove, 202-scraper, 21-transmission rod, 22-toggle block, 23-handle, 24-collecting plate, 25-support beam, 26-sliding groove, 27-spring plate, 28-sliding plate, 29-second protrusion, 30-guide plate, 31-screen, 32-guide strip, 33-discharge box, 34-discharge gate. Detailed Implementation

[0016] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way. Example

[0017] A semi-brittle corundum abrasive layered magnetic separation device, such as Figures 1-6 As shown, the device includes four legs 1 and a housing 2. The tops of the four legs 1 are all fixedly connected to the housing 2. The device is characterized by also including a support 3. The support 3 is fixedly connected to one side of the housing 2, and a motor 4 is fixedly connected to the top of the support 3. The output shaft of the motor 4 is driven by a synchronous belt 6. The inner wall of the synchronous belt 6 has several arc-shaped grooves. The side of the synchronous belt 6 away from the output shaft of the motor 4 is driven by a first rotating shaft 7. The outer wall of the first rotating shaft 7 has irregular grooves. The inner wall of the irregular grooves is fixedly connected to a first spring 71. The other end of the first spring 71 is fixedly connected to a first protrusion 72. The first protrusion 72 cooperates with the arc-shaped grooves of the synchronous belt 6. The first rotating shaft 7 is fixedly connected to a feeding unit. The output end of the motor 4 is equipped with a magnetic separation mechanism for magnetically separating semi-brittle corundum abrasive. The magnetic separation mechanism is located inside the housing 2. A collection unit is installed inside the housing 2, located below the magnetic separation mechanism. A detachable discharge door 34 is installed on one side of the housing 2 for smoothly removing the magnetically separated semi-brittle corundum abrasive.

[0018] The feeding unit includes a feeding box 33, which is fixedly connected to the top of the outer shell 2. Several rotating rods 8 are rotatably connected to the top of the inner wall of the outer shell 2. A rotating plate 9 is fixedly connected to the outer wall of each of the rotating rods 8. The rotating plate 9 is used to feed semi-brittle corundum abrasive. The end of the rotating rod 8 located at the center, near the motor 4, is fixedly connected to the first rotating shaft 7, which passes through the outer shell 2. A second spring 11 is sleeved on both ends of each of the rotating rods 8. One end of the second spring 11 is fixedly connected to the rotating plate 9, and the other end of the second spring 11 is fixedly connected to the inner wall of the outer shell 2. In addition, a pull rope 10 is provided at both ends of adjacent rotating rods 8. Several pull ropes 10 pass through the gap between adjacent second springs 11 and do not contact each other with the second springs 11. The connection points of several pull ropes 10 and rotating rods 8 are arranged in a zigzag path in the axial direction of the rotating rods 8.

[0019] The feeding unit also includes a protective cover 12. Both ends of several rotating rods 8 are provided with a protective cover 12. Several rotating rods 8 located on the same side are rotatably connected to the same protective cover 12. One side of the protective cover 12 is fixed to the inner wall of the outer shell 2. The protective cover 12 is used to protect the pull rope 10 and the second spring 11 from the influence of feeding the semi-brittle corundum abrasive to be processed.

[0020] The magnetic separation mechanism includes a first toothed gear 5, the output shaft of a motor 4 is fixedly connected to the first toothed gear 5, a synchronous belt 6 is located between the motor 4 and the first toothed gear 5, the first toothed gear 5 is meshed with a second gear 13, a second rotating shaft 14 is fixedly connected to the center of one side of the second gear 13, the outer wall of the second rotating shaft 14 penetrates the outer shell 2 near the side of the second gear 13, the other end of the second rotating shaft 14 is rotatably connected to the inner wall of the outer shell 2, a magnetic suction plate 15 is fixedly connected to the outer wall of the second rotating shaft 14, both opposite surfaces of the magnetic suction plate 15 are magnetic, a guide member 16 is fixedly connected to the inner wall of the outer shell 2, the bottom of the guide member 16 is hollow, the guide member 16 is located above the magnetic suction plate 15 and cooperates with it, making it easier for semi-brittle corundum abrasive to fall onto the magnetic suction plate 15.

[0021] The collecting unit includes guide grooves 17, with guide grooves 17 extending through both sides of the outer casing 2. Guide rods 18 are fixed to the inner walls of both guide grooves 17. One set of guide rods 18 has a drive component 19 slidably connected to its end near the motor 4. The drive component 19 is an electric slider (its specific structure for moving along the guide rod 18 is prior art and will not be described in detail here). The drive component 19 is located inside the guide groove 17 and slidably connected to it. The other set of guide rods 18 has a slider 191 slidably connected to its end near the motor 4. The slider 191 and its corresponding… The guide groove 17 is slidably connected, and the collection box 20 is fixedly connected between the drive member 19 and the slider 191. A scraper 202 is installed on the top of the collection box 20. The collection box 20 has two collection grooves 201 inside, which are symmetrical about the scraper 202. The size and shape of the slider 191 are the same as those of the drive member 19. It is used to provide opposing support and guidance when the drive member 19 pushes the collection box 20 to ensure smooth movement. A transmission rod 21 is fixedly connected to the bottom center of the drive member 19, and a toggle block 22 is fixedly connected to the bottom end of the transmission rod 21.

[0022] The collection unit also includes a collection plate 24. The collection plate 24 is installed on the bottom of the inner wall of the outer casing 2. A handle 23 is fixed to the side of the collection plate 24 away from the motor 4. The outer wall of the outer casing 2 has an elongated groove that matches the handle 23. Support beams 25 are symmetrically installed on the top of the collection plate 24. The side of each support beam 25 away from each other is slidably connected to the inner wall of the outer casing 2. A sliding groove 26 is opened on the top of each support beam 25. A spring plate 27 is installed inside the support beam 25 on the side away from the drive component 19.

[0023] The collecting unit also includes a sliding plate 28, and a sliding plate 28 is slidably connected to the inner wall of each sliding groove 26. The sliding plate 28 located on one side of the driving member 19 abuts against the sliding groove 26 on the side near the toggle block 22. Figure 8As shown, the right side of the sliding plate 28 contacts the left side of the sliding groove 26, and several second protrusions 29 are fixedly connected to this side. The second protrusions 29 are located on the upper side of the support beam 25. The sliding plate 28 located on one side of the slider 191 has its side near the slider 191 abutting against the spring plate 27. When the driving member 19 drives the transmission rod 21 to move, the actuating block 22 moves synchronously with the transmission rod 21. At this time, the actuating block 22 near the sliding plate 28 contacts and presses the second protrusions 29, thereby causing the second protrusions 29 to drive the sliding plate 28 to slide to the left in the sliding groove 26. The spring plate 27 is compressed by force. When the actuating block 22 no longer presses the second protrusions 29, the sliding plate 28 is pushed to slide to the left in the sliding groove 26 by the action of the spring plate 27, thereby realizing the sliding plate The sliding plate 28 moves horizontally and reciprocally within the sliding groove 26. Each set of sliding plates 28 has a guide plate 30 fixedly connected to one side of each other. The two guide plates 30 are symmetrically arranged. The guide plates 30 can prevent falling objects from entering the sliding groove 26 and thus affecting the movement of the sliding plate 28. The top of the two sets of sliding plates 28 is fixedly connected to a screen 31. When the sliding plate 28 moves horizontally and reciprocally within the sliding groove 26, it drives the screen 31 to move synchronously, thereby screening the semi-brittle corundum abrasive after magnetic separation. The top of the screen 31 is symmetrically fixed with guide strips 32 to prevent non-magnetic materials that are not screened from falling from both sides of the screen 31 during the reciprocating movement of the screen 31. The second protrusion 29 is located between the screen 31 and the support beam 25. The second protrusion 29 is slidably connected to the actuating block 22.

[0024] In this utility model, the left and right directions are both defined as follows: Figure 2 The view direction shown is the reference point. Specifically, when referring to a component moving to the left, it means along... Figure 2 Moving to the left side of the center; when referring to a component moving to the right, it means along the leftward direction. Figure 2 Moving to the right side of the center is a directional definition method that facilitates understanding the device's workflow and ensures the accuracy and consistency of the description.

[0025] In use, the operator first places the semi-brittle corundum abrasive to be processed into the feeding box 33 and spreads it flat on the rotating plate 9. At this time, the motor 4 is started, and the output shaft of the motor 4 drives the synchronous belt 6 and the first toothed gear 5 to rotate synchronously. When the synchronous belt 6 rotates, the arc-shaped groove on its inner wall periodically meshes with the first protrusion 72 on the first rotating shaft 7. When the two mesh, the synchronous belt 6 drives the first rotating shaft 7 to rotate. Under the traction of the pull rope 10, the other rotating rods 8 rotate with it, and each rotating plate 9 opens at a certain angle. The semi-brittle corundum abrasive falls evenly from the gaps between the rotating plates 9 under the action of gravity. During this process, the second spring 11 is stretched. When the inner wall of the synchronous belt 6 contacts the first protrusion 72, the first protrusion 72 disengages from the arc-shaped groove, and the second spring 11 returns to its original position. The deformation causes the corresponding rotating rod 8 and rotating plate 9 to quickly reset, preventing the semi-brittle corundum abrasive from being fed, thus achieving intermittent feeding with a single quantitative quantity. It is worth noting that under the tension of the pull rope 10, the rotation angle of each rotating plate 9 is less than 90 degrees. At the same time, the teeth of the first toothed gear 5 driven by the output shaft of the motor 4 begin to mesh and rotate with the second gear 13. The second gear 13 drives the second rotating shaft 14 to rotate synchronously, and the second rotating shaft 14 drives the magnetic suction plate 15 to rotate synchronously. The teeth of the first toothed gear 5 drive the second gear 13 to rotate 180 degrees, thereby causing the magnetic suction plate 15 to rotate 180 degrees. At this time, the teeth of the first toothed gear 5 disengage from the second gear 13, and at the same time, the magnetic material in the semi-brittle corundum abrasive is affected by the magnetic force of the magnetic suction plate 15. The attraction remains on the lower surface of the magnetic plate 15. Non-magnetic materials fall onto the screen 31 located at the bottom of the inner wall of the outer casing 2 due to gravity. At this time, the output shaft of the motor 4 continues to rotate, repeating the above operation to drop the semi-brittle corundum abrasive in batches onto both sides of the magnetic plate 15. When non-magnetic materials fall onto the screen 31, the first toothed gear 5 disengages from the second gear 13, facilitating the collection unit's collection of the magnetically attracted materials on the surface of the magnetic plate 15. At this time, the drive unit 19 is activated. The drive unit 19 and the slider 191 together drive the collection box 20 to move along the guide rod 18. The scraper 202 at the top of the collection box 20 scrapes the magnetically attracted materials on the lower surface of the magnetic plate 15 into the corresponding collection groove 201. When the drive unit 19 reaches the other end of the guide rod 18, the collection box... When the drive unit 19 moves to the bottom of the guide member 16, the magnetic objects on the lower surface of the magnetic suction plate 15 are scraped into the corresponding collection groove 201. When the drive unit 19 reaches the other end of the guide rod 18, the magnetic suction plate 15 flips again under the drive of the first toothed gear 5 to perform the next round of magnetic separation and collection of the semi-brittle corundum abrasive. When the drive unit 19 moves, it drives the transmission rod 21 to move synchronously. The transmission rod 21 drives the actuating block 22 to move synchronously. During its movement, the side of the actuating block 22 near the sliding plate 28 abuts against the second protrusion 29 and squeezes the second protrusion 29, so that the second protrusion 29 drives the sliding plate 28, the guide plate 30, the screen 31 and the guide strip 32 to move horizontally along the sliding groove 26. At this time, the sliding plate 28 near the slider 191 squeezes the spring plate 27.When the spring plate 27 is compressed, and the actuating block 22 moves away from the second protrusion 29, the sliding plate 28, guide plate 30, screen 31, and guide strip 32 are no longer compressed. The spring plate 27 returns to its original shape, allowing the sliding plate 28, guide plate 30, screen 31, and guide strip 32 to return to their initial positions. When the actuating block 22 moves again to abut against the second protrusion 29, the above action is repeated, causing the sliding plate 28, guide plate 30, screen 31, and guide strip 32 to vibrate, thereby screening non-magnetic materials. Large pieces of non-magnetic materials remain on the screen 31, while small pieces fall onto the collection plate 24. After all the semi-brittle corundum abrasives have been magnetically separated, the collection box 20, collection plate 24, and screen 31 are removed through the discharge door 34 and handle 23, respectively. This collects the magnetic materials in the collection box 20, the large non-magnetic materials on the screen 31, and the small non-magnetic materials on the collection plate 24 into different hoppers for subsequent use. ,

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A semi-brittle corundum abrasive layered magnetic separation device, comprising legs (1) and a shell (2), wherein the tops of several legs (1) are jointly fixed to the shell (2), characterized in that, It also includes a support (3), a support (3) is fixedly connected to one side of the outer shell (2), a motor (4) is fixedly connected to the top of the support (3), the output shaft of the motor (4) is driven by a synchronous belt (6), the inner wall of the synchronous belt (6) is provided with several arc-shaped grooves, the side of the synchronous belt (6) away from the output shaft of the motor (4) is driven by a first rotating shaft (7), the outer wall of the first rotating shaft (7) is provided with a shaped groove, the inner wall of the shaped groove is fixedly connected to a first spring (71), the other end of the first spring (71) is fixedly connected to a first protrusion (72), the first protrusion (72) cooperates with the arc-shaped groove of the synchronous belt (6), the first rotating shaft (7) is fixedly connected to a feeding unit, the output end of the motor (4) is equipped with a magnetic separation mechanism for magnetic separation of semi-brittle corundum abrasive, the magnetic separation mechanism is located inside the outer shell (2), a collection unit is installed inside the outer shell (2), the collection unit is located below the magnetic separation mechanism, and a detachable discharge door (34) is installed on one side of the outer shell (2).

2. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 1, characterized in that, The unloading unit includes an unloading box (33), the unloading box (33) is fixedly connected to the top of the outer shell (2), and several rotating rods (8) are rotatably connected to the top of the inner wall of the outer shell (2). The outer walls of the several rotating rods (8) are all fixedly connected to rotating plates (9). The rotating rod (8) located in the center position has one end near the motor (4) fixedly connected to the first rotating shaft (7). The first rotating shaft (7) passes through the outer shell (2). The two ends of the several rotating rods (8) are all fitted with second springs (11). One end of the second spring (11) is fixedly connected to the rotating plate (9), and the other end is fixedly connected to the inner wall of the outer shell (2). The two ends of the adjacent rotating rods (8) are all provided with pull ropes (10). The several pull ropes (10) pass through the gap between the adjacent second springs (11) and do not contact each other with the second springs (11). The connection points of the several pull ropes (10) and the rotating rods (8) are all arranged in a broken line path in the axial direction of the rotating rods (8).

3. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 2, characterized in that, The unloading unit also includes a protective cover (12). Both ends of several rotating rods (8) are provided with protective covers (12). Several rotating rods (8) located on the same side are connected to the same protective cover (12) in a rotating manner. One side of the protective cover (12) is fixed to the inner wall of the outer shell (2).

4. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 1, characterized in that, The magnetic separation mechanism includes a first toothed gear (5), the output shaft of the motor (4) is fixedly connected to the first toothed gear (5), the synchronous belt (6) is located between the motor (4) and the first toothed gear (5), the first toothed gear (5) is meshed with a second gear (13), a second rotating shaft (14) is fixedly connected to the center of one side of the second gear (13), the outer wall of the second rotating shaft (14) penetrates the outer shell (2) near the side of the second gear (13), the other end of the second rotating shaft (14) is rotatably connected to the inner wall of the outer shell (2), a magnetic suction plate (15) is fixedly connected to the outer wall of the second rotating shaft (14), and a guide (16) is fixedly connected to the inner wall of the outer shell (2).

5. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 1, characterized in that, The collection unit includes a guide groove (17). Guide grooves (17) are installed through both sides of the outer shell (2). Guide rods (18) are fixed to the inner walls of the two guide grooves (17). One set of guide rods (18) is slidably connected to a drive member (19) at one end near the motor (4). The drive member (19) is located inside the guide groove (17) and is slidably connected to it. Another set of guide rods (18) is slidably connected to a slider (191) at one end near the motor (4). The slider (191) is slidably connected to its corresponding guide groove (17). The drive member (19) and the slider (191) are fixed together to a collection box (20). A scraper (202) is installed on the top of the collection box (20). The inside of the collection box (20) is provided with two collection grooves (201). The two collection grooves (201) are symmetrical about the scraper (202). A transmission rod (21) is fixed at the bottom center of the drive member (19). A toggle block (22) is fixed at the bottom end of the transmission rod (21).

6. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 5, characterized in that, The collection unit also includes a collection plate (24). The collection plate (24) is installed on the bottom of the inner wall of the outer shell (2). A handle (23) is fixed to the side of the collection plate (24) away from the motor (4). The outer wall of the outer shell (2) is provided with a long groove that matches the handle (23). Support beams (25) are symmetrically installed on the top of the collection plate (24). The side of each support beam (25) away from each other is slidably connected to the inner wall of the outer shell (2). A sliding groove (26) is provided on the top of each support beam (25). A spring plate (27) is installed inside the support beam (25) away from the drive component (19).

7. The semi-brittle corundum abrasive layered magnetic separation device as described in claim 6, characterized in that, The collecting unit also includes a sliding plate (28). Each sliding groove (26) has a sliding plate (28) slidably connected to its inner wall. The sliding plate (28) located on the side of the drive member (19) abuts against the sliding groove (26) on the side near the actuating block (22), and several second protrusions (29) are fixedly connected to this side. The sliding plate (28) located on the side of the slider (191) abuts against the spring plate (27) on the side near the slider (191). Each set of sliding plates (28) has a guide plate (30) fixedly connected to the side of each other. The two guide plates (30) are symmetrically arranged. The top of the two sets of sliding plates (28) is fixedly connected to a screen (31). The top of the screen (31) is symmetrically fixedly connected to a guide strip (32). The second protrusion (29) is located between the screen (31) and the support beam (25). The second protrusion (29) is slidably connected to the actuating block (22).

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