Magnetic separation crushing equipment for white corundum

Abstract

The invention relates to the technical field of magnetic separation and crushing, in particular to magnetic separation and crushing equipment for white corundum, which comprises a base, an outer cylinder and a crusher are arranged on the base, the outer cylinder has an inclined trend that the head is higher than the tail, and the outer cylinder consists of a front sealing plate, a rear sealing plate and a cylinder body. The device integrates the functions of crushing, precision screening, magnetic separation screening and discharging, and is high in automation degree and good in practicability; a double-channel parallel magnetic separation mechanism is adopted, and compared with traditional magnetic substance screening equipment, maximum utilization of magnet materials is achieved through the inner working interface and the outer working interface of the permanent magnet; according to the invention, the material flow is divided into the coarse sub-flow and the fine sub-flow according to the granularity, and the coarse sub-flow and the fine sub-flow are respectively subjected to independent magnetic separation, so that the material throughput of a unit channel is reduced, and the problem that the magnetic separation efficiency is reduced due to overhigh material throughput under the working condition of large treatment capacity is fundamentally solved; and the device can still keep a stable and efficient magnetic impurity removal rate under a high input load.

Description

Technical Field

[0001] This invention relates to the field of magnetic separation and crushing technology, and specifically to a magnetic separation and crushing device for white fused alumina. Background Technology

[0002] White fused alumina magnetic separation crushing technology is a material processing technology that integrates crushing, pulverizing and magnetic separation. Its core principle is to crush large pieces of white fused alumina raw material, and then take advantage of the significant difference in magnetic susceptibility between the white fused alumina body (non-magnetic mineral) and the mixed magnetic impurities (including iron metals and other substances) to achieve efficient separation under the action of an external magnetic field, thereby improving the chemical purity and performance stability of white fused alumina products.

[0003] Currently, the industry generally uses permanent magnet drum separators as the key sorting equipment for this process. This equipment relies on an open magnetic system composed of permanent magnet materials to form a high-intensity magnetic field on the surface of the drum. During operation, the material is distributed by a vibrating feeder, forming a continuous material curtain covering the surface of the magnetic separator drum. In the magnetic field zone, non-magnetic white corundum particles quickly detach from the drum track due to their own inertia and gravity, falling into the "non-magnetic product" collection device. Magnetic impurities are adsorbed onto the drum surface under the magnetic capture effect. After rotating with the drum to the non-magnetic or weakly magnetic area at the edge of the magnetic system, they detach under the assistance of centrifugal force, gravity, and possible brushing devices, entering the "magnetic product" collection bin, thus achieving effective separation of the two.

[0004] However, this magnetic separation system is difficult to adapt to high-volume working conditions. When the material throwing density is too high or the material layer is too thick, some magnetic particles may not be fully captured due to being entrained by the material or insufficient magnetic exposure time, resulting in a decrease in magnetic separation efficiency and entrainment of magnetic materials. In addition, traditional permanent magnet drums usually adopt a single-sided working surface design, and the back of the magnet does not participate in the sorting process, resulting in low magnetic energy utilization. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a magnetic separation and crushing device for white fused alumina to solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A magnetic separation and crushing device for white fused alumina includes a base, on which an outer cylinder and a crusher are mounted. The outer cylinder is inclined with its head higher than its tail. The outer cylinder consists of a front sealing plate, a rear sealing plate, and a cylinder body. A filter cylinder and a double-layer cylinder are coaxially rotatably connected inside the cylinder body. The tail of the filter cylinder is coaxially connected to the head of the double-layer cylinder. A permanent magnet is installed in the hollow cavity of the double-layer cylinder. The output part of the crusher extends into the interior of the filter cylinder. The rear sealing plate has a coarse material outlet and a fine material outlet, which are respectively matched with the double-layer cylinder and the cylinder body. The front sealing plate is provided with a differential rotation mechanism, and the high and low speed output parts of the differential rotation mechanism are respectively connected to the filter cartridge and the cylinder body drive; an impact mechanism is installed on the outer surface of the filter cartridge, and several turning plates are arranged in a circular array along its axis on the inner wall of the cylinder body. The turning plates are made of elastic material, and the trigger part of the impact mechanism corresponds to the turning plates. It also includes a magnetic material discharge mechanism, which has two magnetic material collection parts, and the two magnetic material collection parts are respectively fitted to the inner and outer walls of the double-layer cylinder.

[0007] Preferably, the head of the cylinder and the head of the filter cartridge are rotatably connected to the front sealing plate, the front sealing plate is provided with a feed inlet, and the tail of the cylinder and the tail of the double-layer cylinder are rotatably connected to the rear sealing plate.

[0008] Preferably, the rear sealing plate is provided with a coarse material discharge collection box and a fine material discharge collection box, which are respectively matched with the coarse material outlet and the fine material outlet.

[0009] Preferably, the differential rotation mechanism includes a motor mounted on the front sealing plate, a first gear and a second gear on the output end of the motor, a third gear and a fourth gear on the filter cartridge and the cylinder respectively, the diameter of the first gear being larger than the diameter of the second gear, and the diameter of the fourth gear being larger than the diameter of the third gear, the first gear meshing with the third gear, and the second gear meshing with the fourth gear.

[0010] Preferably, the output part of the motor is provided with a cam-type weight block, the bottom of the rear cover plate is hinged to the base, the top of the base is provided with a guide rod, a support frame is vertically slidably fitted on the guide rod, a first spring is installed between the top of the base and the bottom of the support frame, a movable groove is horizontally opened on the support frame, and a snap-fit ​​part is provided at the bottom of the front cover plate, the snap-fit ​​part is slidably fitted with the movable groove.

[0011] Preferably, the magnetic material discharge mechanism includes a magnetic material discharge collection box disposed on the rear sealing plate. The head of the magnetic material discharge collection box is provided with a first discharge trough and a second discharge trough. The first discharge trough and the second discharge trough are respectively located on the inner and outer sides of the double-layer cylinder. The first discharge trough and the second discharge trough are provided with scraping parts near the inner and outer walls of the double-layer cylinder. Both the first discharge trough and the second discharge trough are made of magnetic shielding material.

[0012] Preferably, the impact mechanism includes a one-way bearing and several U-shaped blocks. The one-way bearing is mounted on the outer surface of the filter cartridge, and several carriers are provided on the one-way bearing. A positioning rod is provided inside the U-shaped block. The carriers extend into the interior of the U-shaped block and slide through and cooperate with the positioning rods. Second springs are installed between the two sides of the carriers and the inner wall of the U-shaped block.

[0013] Preferably, the U-shaped block is provided with an impact strip. When the U-shaped block moves along the direction of the positioning rod, the impact strip moves closer to or away from the filter cylinder. The other end of the impact strip corresponds to the turning plate, and the corresponding position is provided with an inclined surface.

[0014] Preferably, the bottom of the crusher is provided with a conveyor belt, and the output end of the conveyor belt extends into the interior of the filter cylinder through the feed port.

[0015] The beneficial effects of this invention are as follows: 1. This invention integrates crushing, precision screening, magnetic separation screening, and discharge functions into one unit, with a high degree of automation and good practicality. It employs a dual-channel parallel magnetic separation mechanism, which, compared to traditional magnetic material screening equipment, utilizes both internal and external working interfaces within the permanent magnet to maximize the utilization of the magnetic material. This invention divides the material flow into coarse and fine sub-flows according to particle size, and performs independent magnetic separation on each, reducing the material throughput per unit channel. This fundamentally solves the problem of decreased magnetic separation efficiency caused by excessive material throughput under high-volume processing conditions, ensuring that the device maintains a stable and efficient magnetic impurity removal rate even under high input loads.

[0016] 2. During the operation of this invention, the filter cylinder is in a rolling and vibrating state, which realizes the turning of materials, thereby improving the screening effect. The excitation force enhances the flowability of materials and reduces the possibility of screen blockage.

[0017] 3. In this invention, the double-layer cylinder rotating and turning the material, combined with the material jumping phenomenon generated by the system vibration mechanism, and the turning plate structure set inside the cylinder, causes the upper and lower layers of fine material to continuously exchange positions, thereby exposing new material, improving the separation efficiency and screening effect of magnetic impurities, ensuring that magnetic impurities are fully exposed and captured, thereby improving the overall screening effect.

[0018] 4. During the operation of this invention, there is a speed difference between the cylinder and the double-layer cylinder, which causes them to rotate relative to each other. When the turning plate rotates to collide with the inclined surface of the impact bar, the turning plate generates high-frequency vibration, which effectively disperses the material clusters in the adjacent area and promotes the exposure of magnetic materials, thereby improving the removal effect of magnetic impurities. On the other hand, the impact force pushes the impact bar to impact the filter cylinder, causing the filter cylinder wall to vibrate and achieve self-cleaning, thereby ensuring that the screening efficiency of the filter cylinder is always maintained at a high level.

[0019] 5. This invention utilizes a one-way bearing configuration, with the motor rotating in the opposite direction, causing the impact bar to scrape away stubborn substances adhering to the surface of the filter cartridge, providing another effective anti-clogging guarantee and ensuring long-term stability of screening efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the cylindrical body of the present invention.

[0022] Figure 3 This is a schematic cross-sectional view of the cylindrical body of the present invention. Figure 1 .

[0023] Figure 4 This is a schematic cross-sectional view of the cylindrical body of the present invention. Figure 2 .

[0024] Figure 5 This is a schematic diagram of the structure of the cylindrical body of the present invention. Figure 3 .

[0025] Figure 6 For the present invention Figure 2 A magnified structural diagram of part A in the middle.

[0026] Figure 7 For the present invention Figure 3 A magnified structural diagram of section B in the middle.

[0027] Figure 8 For the present invention Figure 4 A magnified structural diagram of part C in the middle.

[0028] In the attached diagram: 1. Base; 2. Crusher; 3. Front sealing plate; 4. Rear sealing plate; 5. Cylinder; 6. Filter cartridge; 7. Double-layer cylinder; 8. Coarse material outlet; 9. Fine material outlet; 10. Tilting plate; 11. Feed inlet; 12. Permanent magnet; 13. Coarse material discharge collection box; 14. Fine material discharge collection box; 15. Guide rod; 16. Support frame; 17. First spring; 18. Movable groove; 19. Snap-fit ​​part; 20. Motor; 21. First gear; 22. Second gear; 23. Third gear; 24. Fourth gear; 25. Cam-type drop block; 26. Magnetic material discharge collection box; 27. First discharge chute; 28. Second discharge chute; 29. ​​Scraper; 30. One-way bearing; 31. U-shaped block; 32. Support body; 33. Positioning rod; 34. Second spring; 35. Impact bar; 36. Conveyor belt. Detailed Implementation

[0029] The following will be for reference. Figures 1 to 8 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] A magnetic separation and crushing device for white fused alumina, such as Figures 1-3 and Figure 5As shown, the device includes a base 1, on which an outer cylinder and a crusher 2 are mounted. The crusher 2 is a crushing and grinding facility that integrates a jaw crusher and a ball mill, used for crushing large pieces of white corundum. The outer cylinder has an inclined trend where the head is higher than the tail. In this embodiment, the inclination angle is set between 15 degrees and 20 degrees. The outer cylinder is composed of a front sealing plate 3, a rear sealing plate 4, and a cylinder body 5. A filter cylinder 6 and a double-layer cylinder 7 are coaxially rotatably connected inside the cylinder body 5. The tail of the filter cylinder 6 is coaxially connected to the head of the double-layer cylinder 7. The head of the cylinder body 5 and the head of the filter cylinder 6 are both rotatably connected to the front sealing plate 3. The front sealing plate 3 is provided with a feed inlet 11. The tail of the cylinder body 5 and the tail of the double-layer cylinder 7 are both rotatably connected to the rear sealing plate 4.

[0031] A permanent magnet 12 is installed in the hollow cavity of the double-layer cylinder 7. The output part of the crusher 2 extends into the interior of the filter cylinder 6. A conveyor belt 36 is provided at the bottom of the crusher 2, and the output end of the conveyor belt 36 extends into the interior of the filter cylinder 6 through the feed inlet 11. The rear sealing plate 4 is provided with a coarse material outlet 8 and a fine material outlet 9, which are matched with the double-layer cylinder 7 and the cylinder body 5, respectively. The crusher 2 conveys the crushed material to the interior of the filter cylinder 6 through the conveyor belt 36. Figure 3 For this purpose, materials with a particle size smaller than the sieve aperture of filter cylinder 6 pass through the sieve under the action of gravity and fall into the annular chamber between filter cylinder 6 and cylinder body 5. Thus, coarse and fine powders are effectively separated, and the material grading operation is completed.

[0032] A differential rotation mechanism is provided on the front sealing plate 3. The high and low speed outputs of the differential rotation mechanism are respectively connected to the filter cartridge 6 and the cylinder 5. An impact mechanism is installed on the outer surface of the filter cartridge 6. Several turning plates 10 are arranged in a circular array along the axis of the inner wall of the cylinder 5. The turning plates 10 are made of elastic material, such as plastic sheets. The trigger part of the impact mechanism corresponds to the turning plates 10. The differential rotation mechanism drives the cylinder 5, the filter cartridge 6 and the double-layer cylinder 7 to operate in coordination. Figure 3 As shown, this three-cylinder system is arranged at a certain angle, and the material is continuously turned over and scattered (i.e., turning over), forming a fluidized state, which effectively prevents material adhesion and screen hole blockage, thereby improving screening efficiency.

[0033] Coarse particles that fail to pass through filter cylinder 6 are conveyed to the left by the tilting and tumbling action and enter the inner cavity of double-layer cylinder 7. With the permanent magnet 12, magnetic impurities (including iron and other substances) in the coarse material can be adsorbed and captured on the inner wall. As the double-layer cylinder 7 continues to rotate, it separates from non-magnetic materials, thus achieving the screening of magnetic materials. Moreover, since the double-layer cylinder 7 is in a continuous rotating state, the screening of magnetic materials is carried out during the continuous tumbling of coarse materials, which can avoid poor screening effect due to material accumulation.

[0034] The qualified fine material passing through the filter cylinder 6 falls into the annular cavity formed by the cylinder 5 and the filter cylinder 6. It also flows to the left under the tilt angle and the rotation of the cylinder 5. When the fine material flows through the corresponding outer area of ​​the double-layer cylinder 7, the magnetic impurities in the fine material are adsorbed on the outer wall of the double-layer cylinder 7 and carried away with the rotation. The rotation of the cylinder 5 ensures that the fine material is fully turned over, which greatly exposes the surface of the fresh material and improves the magnetic separation effect.

[0035] This device employs a dual-channel parallel magnetic separation mechanism. Compared with traditional magnetic material screening equipment, it enables the permanent magnet 12 to operate simultaneously on both the inner and outer working interfaces, maximizing the utilization of the magnetic material. The device divides the material flow into two sub-flows, coarse and fine, according to particle size, and performs independent magnetic separation on each. This reduces the material throughput per unit channel and fundamentally solves the problem of decreased magnetic separation efficiency caused by excessive material throughput under high-volume processing conditions. It ensures that the device can maintain a stable and efficient magnetic impurity removal rate even under high input loads.

[0036] like Figure 2 and Figure 3 As shown, the rear sealing plate 4 is equipped with a coarse material discharge collection box 13 and a fine material discharge collection box 14. The coarse material discharge collection box 13 and the fine material discharge collection box 14 are matched with the coarse material outlet 8 and the fine material outlet 9, respectively. The coarse material discharge collection box 13 and the fine material discharge collection box 14 are connected to the external coarse material storage equipment and the fine material storage equipment, respectively. After the coarse and fine material magnetic impurity screening operation, the remaining material flows into the coarse material discharge collection box 13 and the fine material discharge collection box 14 through the coarse material outlet 8 and the fine material outlet 9, respectively.

[0037] like Figure 2 , Figure 4 and Figure 8 As shown, the differential rotation mechanism includes a motor 20 mounted on the front sealing plate 3. The motor 20 is a servo motor capable of rotating in both directions. The output end of the motor 20 is provided with a first gear 21 and a second gear 22. The filter cartridge 6 and the cylinder 5 are respectively provided with a third gear 23 and a fourth gear 24. The diameter of the first gear 21 is larger than the diameter of the second gear 22, and the diameter of the fourth gear 24 is larger than the diameter of the third gear 23. The first gear 21 is meshed with the third gear 23, and the second gear 22 is meshed with the fourth gear 24. When the motor 20 starts, it drives the first gear 21 and the second gear 22 to rotate, thereby driving the third gear 23 and the fourth gear 24 to rotate the filter cartridge 6 and the cylinder 5. The rotational speed of the filter cartridge 6 is higher than that of the cylinder 5.

[0038] like Figure 2 and Figure 6As shown, the output section of the motor 20 is provided with a cam-type drop block 25. The bottom of the rear sealing plate 4 is hinged to the base 1. The top of the base 1 is provided with a guide rod 15. A support frame 16 is vertically slidably fitted on the guide rod 15. A first spring 17 is installed between the top of the base 1 and the bottom of the support frame 16. A movable groove 18 is horizontally opened on the support frame 16. The bottom of the front sealing plate 3 is provided with a snap-fit ​​part 19, which is slidably fitted with the movable groove 18. The motor 20 drives the cam-type drop block 25 to rotate, generating a periodic excitation force. With the hinge at the bottom of the rear sealing plate 4 and the setting of the first spring 17, the cylinder 5 and the filter cylinder 6 reciprocate around the hinge axis at the bottom of the rear sealing plate 4 (i.e., vibrate). During this process, the first spring 17 plays the role of energy storage and reset, and slides in the movable groove 18 through the snap-fit ​​part 19.

[0039] The vibration mechanism enhances the flowability of materials and reduces the possibility of screen blockage. The material jumps (i.e., "jumping vibration"), combined with the tilting plate 10 structure inside the cylinder, which causes the upper and lower fine materials to continuously exchange positions, thereby exposing new materials and improving the separation efficiency and screening effect of magnetic impurities.

[0040] like Figure 2 , Figure 3 and Figure 5 As shown, it also includes a magnetic material discharge mechanism, which has two magnetic material collection sections, and the two magnetic material collection sections are respectively fitted to the inner and outer walls of the double-layer cylinder 7; the magnetic material discharge mechanism includes a magnetic material discharge collection box 26 set on the rear sealing plate 4, the magnetic material discharge collection box 26 is connected to an external magnetic material storage device, and the head of the magnetic material discharge collection box 26 is provided with a first discharge trough 27 and a second discharge trough 28, the first discharge trough 27 and the second discharge trough 28 are respectively located on the inner and outer sides of the double-layer cylinder 7, and the setting direction of the first discharge trough 27 and the second discharge trough 28 is parallel to the central axis of the double-layer cylinder 7. Scraping sections 29 are provided near the inner and outer walls of the double-layer cylinder 7. During the rotation of the double-layer cylinder 7, when the magnetic material moves with the double-layer cylinder 7 to enter the first discharge trough 27 and the second discharge trough 28, the two scraping sections 29 scrape off the magnetic impurities attached to the inner and outer walls of the double-layer cylinder 7. The magnetic impurities flow with the assistance of the shaking force (i.e., the reciprocating swing of the aforementioned cylinder 5) and finally collect in the magnetic material discharge collection box 26, completing the discharge of magnetic impurities. In addition, since the first discharge trough 27 and the second discharge trough 28 are both made of magnetic shielding material, a magnetic field shield can be formed after scraping, weakening the magnetic influence of the permanent magnet 12 on the scraped material and ensuring that they can be discharged smoothly.

[0041] like Figure 3 and Figure 7As shown, the impact mechanism includes a one-way bearing 30 and several U-shaped blocks 31. The one-way bearing 30 is mounted on the outer surface of the filter cylinder 6, and several carriers 32 are provided on the one-way bearing 30. A positioning rod 33 is provided inside the U-shaped block 31. The carriers 32 extend into the interior of the U-shaped block 31 and slide through and cooperate with the positioning rod 33. Second springs 34 are installed between the two sides of the carriers 32 and the inner wall of the U-shaped block 31. An impact strip 35 is provided on the U-shaped block 31. When the U-shaped block 31 moves along the direction of the positioning rod 33, the impact strip 35 moves closer to or away from the filter cylinder 6. The other end of the impact strip 35 corresponds to the turning plate 10, and the corresponding position is provided with an inclined surface. During the operation of this device, there is a speed difference between the cylinder 5 and the double-layer cylinder 7. This causes relative rotation between the two. When the turning plate 10 installed on the cylinder 5 rotates and comes into contact with the inclined surface of the impact bar 35, an impact force is generated. This impact causes the elastic turning plate 10 to undergo transient deformation and trigger high-frequency flutter, effectively breaking up the material clusters in its vicinity and promoting the exposure of magnetic materials. On the other hand, the impact force pushes the U-shaped block 31 and the impact bar 35 to move axially along the positioning rod 33, so that the impact bar 35 finally impacts the filter cylinder 6, causing the filter cylinder 6 wall to vibrate and achieve self-cleaning of the filter pores of the filter cylinder 6, thereby ensuring that the permeability and screening efficiency of the filter cylinder 6 are always maintained at a high level. With the setting of the one-way bearing 30, the impact bar 35 will only rotate with the filter cylinder 6 when it rotates in the forward direction.

[0042] The working principle of this device is as follows: After the material is crushed by the crusher 2, it is conveyed to the inside of the filter cylinder 6 by the conveyor belt 36. The motor 20 drives the cylinder 5 and the filter cylinder 6 to rotate in the same direction but at different speeds. During the rolling process, the filter cylinder 6 tumbles and scatters the material. Combined with its own filter hole structure, it achieves precise screening of the material. Moreover, the cylinder 5, the filter cylinder 6 and the double-layer cylinder 7 are arranged at an incline to ensure that the material moves towards the tail of the equipment while being turned over.

[0043] At the same time, the rotation of the cam-type drop block 25 generates periodic excitation force, which, together with the bottom hinge of the rear sealing plate 4 and the setting of the first spring 17, causes the cylinder 5 and filter cylinder 6 to vibrate, enhancing the flowability of the material and reducing the possibility of screen blockage.

[0044] by Figure 3 For example, coarse particles that fail to pass through filter cylinder 6 are conveyed to the left under the action of tilting and tumbling, and enter the inner cavity of double-layer cylinder 7. With the setting of permanent magnet 12, magnetic impurities in the coarse material can be adsorbed and captured on the inner wall. As the double-layer cylinder 7 continues to rotate, it separates from non-magnetic materials. Fine material that passes through filter cylinder 6 falls into the annular cavity formed by cylinder 5 and filter cylinder 6. It also flows to the left under the tilting and tumbling of cylinder 5. When the fine material flows through the corresponding outer area of ​​double-layer cylinder 7, the magnetic impurities in the fine material are adsorbed on the outer wall of double-layer cylinder 7 and carried away with the rotation, thereby realizing the function of magnetic impurity screening.

[0045] It should be noted that the continuous rotation of the cylinder 5 and the double-layer cylinder 7 produces a material turning effect. Combined with the material jumping phenomenon generated by the system vibration mechanism, and the material turning plate 10 structure set inside the cylinder, it causes the upper and lower fine materials to continuously exchange positions, thereby exposing new materials, improving the separation efficiency and screening effect of magnetic impurities, ensuring that magnetic materials are fully exposed and captured, and thus improving the overall screening effect.

[0046] During the rotation of the double-layer cylinder 7, when the magnetic material moves with the double-layer cylinder 7 to enter the first discharge trough 27 and the second discharge trough 28, the two scraper parts 29 scrape off the magnetic impurities attached to the inner and outer walls of the double-layer cylinder 7. The magnetic impurities flow with the assistance of the shaking force and finally collect in the magnetic material discharge box 26, thus completing the discharge of the magnetic impurities.

[0047] During the operation of this device, there is a speed difference between the cylinder 5 and the double-layer cylinder 7, which causes them to rotate relative to each other. When the material-turning plate 10 installed on the cylinder 5 rotates and comes into contact with the inclined surface of the impact bar 35, an impact force is generated. This impact causes the elastic material-turning plate 10 to undergo transient deformation and trigger high-frequency flutter, effectively breaking up the material clusters in its vicinity and promoting the exposure of magnetic materials. On the other hand, the impact force pushes the U-shaped block 31 and the impact bar 35 to move axially along the positioning rod 33, so that the impact bar 35 eventually impacts the filter cylinder 6, causing the filter cylinder 6 wall to vibrate and achieve self-cleaning of the filter pores of the filter cylinder 6, thereby ensuring that the permeability and screening efficiency of the filter cylinder 6 are always maintained at a high level.

[0048] It is worth noting that this device relies on the elastic reset mechanism composed of the U-shaped block 31, the carrier 32 and the two second springs 34. When the impact bar 35 rotates to the lower position, it falls under its own weight, away from the filter cylinder 6 and aligned with the turning plate 10. When it rotates upward, it moves closer to the filter cylinder 6 under the reset force of the second spring 34. This design ensures that the impact bar 35 located above is misaligned with the turning plate 10 above, avoiding ineffective collisions and reducing equipment wear.

[0049] In addition, when the motor 20 drives the filter cartridge 6 to rotate in the opposite direction, the impact bar 35 rotates relative to the double-layer cylinder 7 by means of the one-way bearing 30. At this time, the impact bar 35 can act as a scraping mechanism to scrape off the stubborn substances adhering to the surface of the filter cartridge 6, providing another effective anti-clogging guarantee and ensuring the long-term stability of screening efficiency.

[0050] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A magnetic separation and crushing device for white fused alumina, comprising a base (1), characterized in that, The base (1) is provided with an outer cylinder and a crusher (2). The outer cylinder has an inclined trend with the head higher than the tail. The outer cylinder is composed of a front sealing plate (3), a rear sealing plate (4) and a cylinder body (5). The cylinder body (5) is coaxially rotatably connected with a filter cylinder (6) and a double-layer cylinder (7). The tail of the filter cylinder (6) is coaxially connected with the head of the double-layer cylinder (7). A permanent magnet (12) is installed in the hollow cavity of the double-layer cylinder (7). The output part of the crusher (2) extends into the interior of the filter cylinder (6). The rear sealing plate (4) is provided with a coarse material outlet (8) and a fine material outlet (9). The coarse material outlet (8) and the fine material outlet (9) are respectively matched with the double-layer cylinder (7) and the cylinder body (5). The front sealing plate (3) is provided with a differential rotation mechanism. The high and low speed output parts of the differential rotation mechanism are respectively connected to the filter cartridge (6) and the cylinder (5). An impact mechanism is installed on the outer surface of the filter cartridge (6). Several turning pieces (10) are arranged in a circular array along the axis of the inner wall of the cylinder (5). The turning pieces (10) are made of elastic material. The trigger part of the impact mechanism corresponds to the turning pieces (10). It also includes a magnetic material discharge mechanism, which has two magnetic material collection parts, and the two magnetic material collection parts are respectively fitted to the inner and outer walls of the double-layer cylinder (7).

2. The magnetic separation and crushing equipment for white fused alumina according to claim 1, characterized in that, The head of the cylinder (5) and the head of the filter cylinder (6) are rotatably connected to the front sealing plate (3). The front sealing plate (3) is provided with a feed inlet (11). The tail of the cylinder (5) and the tail of the double-layer cylinder (7) are rotatably connected to the rear sealing plate (4).

3. The magnetic separation and crushing equipment for white fused alumina according to claim 1, characterized in that, The rear sealing plate (4) is provided with a coarse material discharge collection box (13) and a fine material discharge collection box (14), which are matched with the coarse material outlet (8) and the fine material outlet (9), respectively.

4. The magnetic separation and crushing equipment for white fused alumina according to claim 1, characterized in that, The differential rotation mechanism includes a motor (20) mounted on the front sealing plate (3). The output end of the motor (20) is provided with a first gear (21) and a second gear (22). The filter cartridge (6) and the cylinder (5) are respectively provided with a third gear (23) and a fourth gear (24). The diameter of the first gear (21) is larger than the diameter of the second gear (22), and the diameter of the fourth gear (24) is larger than the diameter of the third gear (23). The first gear (21) is meshed with the third gear (23), and the second gear (22) is meshed with the fourth gear (24).

5. A magnetic separation and crushing device for white fused alumina according to claim 4, characterized in that, The output section of the motor (20) is provided with a cam-type drop block (25), the bottom of the rear cover plate (4) is hinged to the base (1), the top of the base (1) is provided with a guide rod (15), a support frame (16) is vertically slidably fitted on the guide rod (15), a first spring (17) is installed between the top of the base (1) and the bottom of the support frame (16), a movable groove (18) is horizontally opened on the support frame (16), and a snap-fit ​​part (19) is provided at the bottom of the front cover plate (3), the snap-fit ​​part (19) is slidably fitted with the movable groove (18).

6. The magnetic separation and crushing equipment for white fused alumina according to claim 1, characterized in that, The magnetic material discharge mechanism includes a magnetic material discharge collection box (26) set on the rear sealing plate (4). The head of the magnetic material discharge collection box (26) is provided with a first discharge trough (27) and a second discharge trough (28). The first discharge trough (27) and the second discharge trough (28) are located on the inner and outer sides of the double-layer cylinder (7), respectively. The first discharge trough (27) and the second discharge trough (28) are provided with scraping parts (29) near the inner and outer walls of the double-layer cylinder (7). The first discharge trough (27) and the second discharge trough (28) are both made of magnetic shielding material.

7. The magnetic separation and crushing equipment for white fused alumina according to claim 1, characterized in that, The impact mechanism includes a one-way bearing (30) and several U-shaped blocks (31). The one-way bearing (30) is installed on the outer surface of the filter cartridge (6). Several carriers (32) are provided on the one-way bearing (30). A positioning rod (33) is provided inside the U-shaped block (31). The carrier (32) extends into the interior of the U-shaped block (31) and slides through the positioning rod (33). A second spring (34) is installed between the two sides of the carrier (32) and the inner wall of the U-shaped block (31).

8. A magnetic separation and crushing device for white fused alumina according to claim 7, characterized in that, The U-shaped block (31) is provided with an impact strip (35). When the U-shaped block (31) moves along the direction of the positioning rod (33), the impact strip (35) moves closer to or further away from the filter cylinder (6). The other end of the impact strip (35) corresponds to the turning plate (10), and the corresponding position is provided with an inclined surface.

9. A magnetic separation and crushing device for white fused alumina according to claim 2, characterized in that, The bottom of the crusher (2) is provided with a conveyor belt (36), and the output end of the conveyor belt (36) extends into the interior of the filter cylinder (6) through the feed inlet (11).

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