Multistage magnetic separation device for silicon carbide

Abstract

The utility model provides a multistage magnetic separation device for silicon carbide and belongs to the technical field of silicon carbide production. Which comprises a belt conveyor and a feeding hopper fixed to the belt conveyor, and is characterized in that a plurality of magnetic separation assemblies are further arranged on the belt conveyor, each magnetic separation assembly comprises a supporting frame fixed to the two sides of the belt conveyor, and a motor is fixed to one side of each supporting frame; the output end of the motor movably penetrates through the supporting frame and is fixedly connected with an outer cylinder. The device is provided with a magnetic separation assembly, when the device is used, a motor drives an outer barrel to rotate for magnetic separation and impurity removal, a magnetic suction roller of the device is divided into the outer barrel and an inner magnet, and the inner magnet is provided with a through groove, so that adsorbed impurities lose suction force, finally fall off, are scraped by a cleaning scraper and finally flow into a V-shaped trough to be collected; the problem that impurities on the magnetic separation roller cannot be well removed due to the fact that the magnetic separation roller is always provided with a magnetic cleaning scraper in the related scheme is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide production, and particularly relates to a multi-stage magnetic separation device for silicon carbide. Background Technique

[0002] Silicon carbide is smelted at high temperature in a resistance furnace using raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt needs to be added when producing green silicon carbide); silicon carbide mainly has four major application fields: functional ceramics, refractory materials, abrasives, and metallurgical raw materials; in order to better improve the content of silicon carbide micropowder, it is very necessary to perform magnetic separation and chemical treatment on silicon carbide. Especially during the production process of silicon carbide micropowder, the process is complex and the production cost also increases, but the use value is quite high. Therefore, equipment such as magnetic separators is needed to perform magnetic separation treatment on silicon carbide powder. A magnetic separation device refers to a device that, according to the magnetic characteristics of materials, uses magnetic equipment to separate magnetic materials from other materials. When performing magnetic separation, the raw material (silicon carbide) is placed into the magnetic separation device, and the magnetic separation device performs multiple magnetic adsorption screenings through multiple magnetic adsorption rollers to remove impurities such as iron filings inside, thereby performing impurity removal treatment and improving its purity.

[0003] In the Chinese utility model patent CN220803777U, a multi-stage magnetic separation device is disclosed, which includes an installation frame. The right part of the front end of the installation frame is movably connected with a second magnetic separation mechanism, the middle part of the front end of the installation frame is movably connected with a first magnetic separation mechanism. The first magnetic separation mechanism and the second magnetic separation mechanism have the same structure. A conveyor belt is installed inside the installation frame. The four corners of the lower end of the installation frame are fixedly connected with support legs. The left part of the front end of the installation frame is fixedly connected with a control panel, and the left part of the front end of the installation frame is fixedly connected with a feeding device. The control panel is located between the feeding device and the first magnetic separation mechanism. The disclosed multi-stage magnetic separation device in this solution can reduce the manufacturing cost by setting the magnetic separation mechanism.

[0004] However, the above solution also has certain defects. That is, when the scraper scrapes the silicon carbide impurities adsorbed on the magnetic separation roller, due to the magnetic problem on the magnetic separation roller, the impurities in the scraping area are very difficult to detach from the magnetic separation roller. At the same time, the inclination angle of the feeding ramp set in this device is insufficient, and impurities are prone to accumulate on the ramp during self-sliding of the material. Subsequent manual cleaning is required, which has certain defects. Therefore, this application provides a multi-stage magnetic separation device for silicon carbide to meet the requirements. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a multi-stage magnetic separation device for silicon carbide to solve the problem that the cleaning scraper cannot well remove the impurities on the magnetic separation roller because the magnetic separation roller always has magnetism in the related solutions.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions:

[0007] A silicon carbide multi-stage magnetic separation device, comprising a belt conveyor and a feed hopper fixed on the belt conveyor, characterized in that: a plurality of groups of magnetic separation components are further arranged on the belt conveyor, and each magnetic separation component includes a support frame fixed on both sides of the belt conveyor, a motor is fixed on one side of the support frame, the output end of the motor movably penetrates through the support frame and is fixedly connected with an outer cylinder, the outer cylinder is located above the conveyor belt of the belt conveyor, an inner magnet is arranged in the outer cylinder, an inner support frame is further fixed on the inner wall of the inner magnet, a shaft one is fixed at one end of the inner support frame away from the motor, the shaft one movably penetrates through the outer cylinder and is fixed on the side surface of the support frame, and a through groove is further opened on the inner magnet; the magnetic separation component further includes a cleaning scraper arranged on the circumferential surface of the outer cylinder, a round rod is fixed on the belt conveyor, the cleaning scraper is fixed at one end of the round rod away from the belt conveyor, a connecting piece is fixed on one side of the cleaning scraper away from the outer cylinder, a V-shaped material trough is fixed on one side of the connecting piece away from the cleaning scraper, the V-shaped material trough is flexibly connected with the cleaning scraper through the connecting piece, and a support rod is further fixed on the belt conveyor, and the V-shaped material trough is fixed at one end of the support rod away from the belt conveyor.

[0008] Preferably, both the V-shaped material trough and the cleaning scraper are inclined.

[0009] Preferably, the through groove is inclined, and the inclination angle and inclination direction of the through groove are the same as those of the cleaning scraper.

[0010] Preferably, the cross sections at both ends of the outer cylinder are in a frustum shape.

[0011] Preferably, the thickness of the inner magnet gradually increases from the upper side end of the through groove to the other side end.

[0012] Preferably, a storage box is detachably connected to one side of the belt conveyor, and the lower end of the V-shaped material trough is arranged above the storage box.

[0013] Preferably, a vibration component is arranged on the output shaft of the motor, and the vibration component includes a rotating disk one fixedly sleeved on the output shaft of the motor and a spring member arranged on the support rod. A plurality of arc-shaped convex blocks are further fixed on the outer peripheral side of the rotating disk one. A connecting rod is further fixed at the end of the V-shaped material trough. One end of the connecting rod away from the V-shaped material trough is rotatably connected with a rotating disk two. The rotating disk one and the rotating disk two are in contact with each other. During use, the rotating disk one rotates, and different arc-shaped convex blocks intermittently contact the rotating disk two and cause the rotating disk two to jump radially along the rotating disk one, and the support rod is inclined.

[0014] Preferably, a second shaft is fixed to the inner wall of the outer cylinder near the motor side, and a circular groove is formed on the inner support frame near the motor side, and the end of the second shaft away from the inner cylinder is rotatably connected to the circular groove.

[0015] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0016] In the above solution, a magnetic separation component is provided. During use, the motor drives the outer cylinder to rotate, so that magnetic separation is performed on the silicon carbide that needs to be magnetically separated and adsorbed on the surface of the outer cylinder. The adsorbed impurities will be scraped by the inclined scraper. Different from the related solutions, the magnetic adsorption roller of this device is divided into an outer cylinder and an internal inner magnet. The inner magnet is provided with a through groove where there is no magnetism, so that the adsorbed impurities will lose suction and finally fall off, and are scraped by the cleaning scraper and finally flow into the V-shaped trough for collection. At the same time, multiple magnetic separation components are provided. After multiple magnetic separations, the cleaning quality of impurities is greatly improved, and the problem that the cleaning scraper cannot well remove the impurities on the magnetic separation roller due to the magnetic separation roller always being magnetic in the related solutions is solved.

[0017] At the same time, the device is also provided with a vibration component. The vibration component drives the first rotating disk to rotate while driving the outer cylinder to rotate by the motor. At the same time, a spring member is provided on its support rod. Through elastic support, the support rod, the second rotating disk and the first rotating disk are tightly fitted. Also, due to the action of the arc-shaped convex block provided on the first rotating disk, the second rotating disk intermittently jumps, and finally drives the V-shaped trough to vibrate, so that the impurities on it slide down better, solving the problem that the material trough in the related solutions is prone to material accumulation due to insufficient inclination angle and cannot flow down well by itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0019] Figure 1 It is a schematic structural diagram of the overall silicon carbide multi-stage magnetic separation device;

[0020] Figure 2 It is a schematic structural diagram of the cross-section of the outer cylinder of the silicon carbide multi-stage magnetic separation device;

[0021] Figure 3 It is a schematic structural diagram of the vibration component of the silicon carbide multi-stage magnetic separation device;

[0022] Figure 4 It is a schematic structural diagram of the internal components of the outer cylinder of the silicon carbide multi-stage magnetic separation device;

[0023] Figure 5 It is a schematic front cross-sectional view of the outer cylinder and its internal components of the silicon carbide multi-stage magnetic separation device;

[0024] Figure 6 It is a schematic structural diagram of the magnet inside the silicon carbide multi-stage magnetic separation device.

[0025] [Reference numerals]

[0026] 1. Belt conveyor; 11. Feed hopper;

[0027] 2. Magnetic separation assembly; 21. Support frame; 22. Motor; 23. Outer cylinder; 24. Inner magnet; 241. Inner support frame; 242. Through groove; 243. Shaft 1; 244. Shaft 2; 25. Cleaning scraper; 251. Round rod; 26. V-shaped trough; 27. Connecting piece; 28. Support rod; 29. Storage box;

[0028] 3. Vibration assembly; 31. Rotating disk 1; 311. Arc-shaped convex block; 32. Connecting rod; 33. Rotating disk 2; 34. Spring member.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. Detailed implementation manners

[0030] The following combines the drawings and specific embodiments to describe in detail a silicon carbide multi-stage magnetic separation device provided by the present invention. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; and the drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0031] It should be noted that when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification, it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0032] Generally, terms can be understood at least in part from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in a singular sense, or can be used to describe a combination of features, structures, or properties in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather can alternatively, depending at least in part on the context, allow for the existence of other factors that are not necessarily explicitly described.

[0033] As Figures 1 - 6 shown, an embodiment of the present utility model provides a silicon carbide multi-stage magnetic separation device, including a belt conveyor 1 and a feeding hopper 11 fixed on the belt conveyor 1, characterized in that: a plurality of groups of magnetic separation components 2 are further arranged on the belt conveyor 1, and each magnetic separation component 2 includes a support frame 21 fixed on both sides of the belt conveyor 1, a motor 22 is fixed on one side of the support frame 21, an output end of the motor 22 movably penetrates through the support frame 21 and is fixedly connected to an outer cylinder 23, the outer cylinder 23 is located above the conveyor belt of the belt conveyor 1, an inner magnet 24 is arranged in the outer cylinder 23, an inner support frame 241 is further fixed on an inner wall of the inner magnet 24, a first shaft 243 is fixed at one end of the inner support frame 241 away from the motor 22, the first shaft 243 movably penetrates through the outer cylinder 23 and is fixed on a side surface of the support frame 21, and a through groove 242 is further formed on the inner magnet 24; the magnetic separation component 2 further includes a cleaning scraper 25 arranged on a circumferential surface of the outer cylinder 23, a round rod 251 is fixed on the belt conveyor 1, the cleaning scraper 25 is fixed at one end of the round rod 251 away from the belt conveyor 1, a connecting member 27 is fixed on a side of the cleaning scraper 25 away from the outer cylinder 23, a V-shaped material trough 26 is fixed on a side of the connecting member 27 away from the cleaning scraper 25, the V-shaped material trough 26 is flexibly connected to the cleaning scraper 25 through the connecting member 27, and a support rod 28 is further fixed on the belt conveyor 1, and the V-shaped material trough 26 is fixed at one end of the support rod 28 away from the belt conveyor 1.

[0034] When using this device, the silicon carbide to be separated by magnetic separation is placed into the hopper 11, and it flows onto the belt conveyor 1, and then undergoes magnetic separation through the magnetic separation device. First, the motor 22 drives the outer cylinder 23 to rotate, and it performs magnetic adsorption on the silicon carbide to be separated by magnetic separation on the surface of the outer cylinder 23. Then, through rotation, the adsorbed impurities will be scraped by the inclined scraper. Different from the related solutions, the magnetic adsorption roller of this device is divided into the outer cylinder 23 and the internal inner magnet 24. The inner magnet 24 is provided with a through groove 242, and the through groove 242 is opened on one side of the cleaning scraper 25. When the outer cylinder 23 adsorbs impurities and the cleaning scraper 25 scrapes them, since it will pass through the through groove 242 where there is no magnetism, the adsorbed impurities will lose their suction and finally fall off, and are scraped by the cleaning scraper 25 and finally flow into the V-shaped trough 26 for collection. At the same time, multiple magnetic separation components 2 are provided, and through multiple magnetic separations, the cleaning quality of the impurities is greatly improved.

[0035] As Figure 2 shown, in this embodiment, both the V-shaped trough 26 and the cleaning scraper 25 are inclined, and the inclined setting enables the adsorbed impurities to fall off by themselves.

[0036] As Figure 2 shown, in this embodiment, the through groove 242 is inclined, and the inclination angle and direction of the through groove 242 are the same as those of the cleaning scraper 25. The effect provided by the through groove 242 is to remove part of the magnetism of the magnetic adsorption roller, making it easier for the impurities to break away. The through groove 242 is arranged in the same direction as the cleaning scraper 25 and the V-shaped trough 26, which can make it more convenient to remove the adsorbed impurities.

[0037] As Figure 3 shown, in this embodiment, the cross-sections at both ends of the outer cylinder 23 are in the shape of a frustum of a cone. Since the ends of the traditional columnar magnetic adsorption roller are prone to adsorb certain impurities and are not easy to scrape off, in this solution, the ends of the outer cylinder 23 protrude, which greatly facilitates the removal of the impurities adsorbed at the ends.

[0038] As Figure 6 shown, in this embodiment, the thickness of the inner magnet 24 gradually increases from the upper side end of the through groove 242 to the other side end; when the impurities approach the cleaning scraper 25, its magnetism will gradually decrease and finally disappear completely, further improving the cleaning effect.

[0039] As Figure 1 shown, in this embodiment, a storage bin 29 is detachably connected to one side of the belt conveyor 1, and the lower end of the V-shaped trough 26 is arranged above the storage bin 29, and the storage bin 29 can more conveniently collect the adsorbed impurities.

[0040] As Figure 3As shown in the figure, in this embodiment, a vibration assembly 3 is provided on the output shaft of the motor 22. The vibration assembly 3 includes a first rotating disk 31 fixedly sleeved on the output shaft of the motor 22 and a spring member 34 disposed on the support rod 28. A plurality of arc-shaped protrusions 311 are further fixed on the outer peripheral side of the first rotating disk 31. A connecting rod 32 is further fixed at the end of the V-shaped chute 26. One end of the connecting rod 32 away from the V-shaped chute 26 is rotatably connected to a second rotating disk 33. The first rotating disk 31 is in contact with the second rotating disk 33. During use, the first rotating disk 31 rotates, and different arc-shaped protrusions 311 intermittently contact the second rotating disk 33 and cause the second rotating disk 33 to jump radially along the first rotating disk 31. The support rod 28 is inclined.

[0041] While the vibration assembly 3 drives the outer cylinder 23 to rotate through the motor 22, it drives the first rotating disk 31 to rotate. At the same time, a spring member 34 is provided on its support rod 28. Through elastic support, the support rod 28, the second rotating disk 33 and the first rotating disk 31 are tightly attached. Also, due to the action of the arc-shaped protrusions 311 provided on the first rotating disk 31, the second rotating disk 33 intermittently jumps, finally driving the V-shaped chute 26 to vibrate, making the impurities on it slide off better.

[0042] As Figure 5 shown, in this embodiment, a second shaft 244 is fixed on the inner wall of the outer cylinder 23 near the motor 22. A circular groove is opened on the side of the inner support frame 241 near the motor 22. The end of the second shaft 244 away from the inner cylinder is rotatably connected in the circular groove; the second shaft 244 can better stably support and place the outer cylinder 23.

[0043] Working principle: When using this device, the silicon carbide to be magnetic-separated is placed into the hopper 11 and made to flow onto the belt conveyor 1, and then undergoes magnetic separation through the magnetic separation device. First, the motor 22 drives the outer cylinder 23 to rotate, so that magnetic separation is performed on the silicon carbide that needs to be magnetic-separated and adsorbed on the surface of the outer cylinder 23. Then, through rotation, the adsorbed impurities will be scraped by the inclined scraper. Different from the related solutions, the magnetic adsorption roller of this device is divided into the outer cylinder 23 and the internal inner magnet 24. The inner magnet 24 is provided with a through groove 242, and the through groove 242 is opened on one side of the cleaning scraper 25. When the outer cylinder 23 adsorbs impurities and the cleaning scraper 25 scrapes them, since it will pass through the through groove 242 where there is no magnetism, the adsorbed impurities will lose their suction and finally fall, and are scraped by the cleaning scraper 25 and finally flow into the V-shaped chute 26 for collection. At the same time, multiple magnetic separation components 2 are provided, and through multiple magnetic separations, the cleaning quality of the impurities is greatly improved.

[0044] The device is also provided with a vibration assembly 3. While the motor 22 drives the outer cylinder 23 to rotate, the vibration assembly 3 drives the first rotating disk 31 to rotate. At the same time, a spring member 34 is arranged on its support rod 28. Through elastic support, the support rod 28, the second rotating disk 33 and the first rotating disk 31 are tightly attached. Also, due to the action of the arc-shaped convex block 311 arranged on the first rotating disk 31, the second rotating disk 33 intermittently jumps, and finally drives the V-shaped chute 26 to vibrate, so that the impurities above can slide down better.

[0045] The present utility model covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without the description of these details.

[0046] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A silicon carbide multi-stage magnetic separation device, comprising a belt conveyor (1) and a hopper (11) fixed on the belt conveyor (1), characterized in that: The belt conveyor (1) is also provided with a plurality of groups of magnetic separation components (2), each of the magnetic separation components (2) comprising a support frame (21) fixed on both sides of the belt conveyor (1), a motor (22) being fixed on one side of the support frame (21), an output end of the motor (22) movably passing through the support frame (21) and being fixedly connected to an outer cylinder (23), the outer cylinder (23) being located above the conveyor belt of the belt conveyor (1), an inner magnet (24) being provided inside the outer cylinder (23), an inner support frame (241) being fixed to the inner wall of the inner magnet (24), a shaft (243) being fixed to one end of the inner support frame (241) away from the motor (22), the shaft (243) movably passing through the outer cylinder (23) and being fixed to the side of the support frame (21), and a through slot (242) being provided on the inner magnet (24); The magnetic separation component (2) further comprises a cleaning scraper (25) arranged on the circumferential surface of the outer cylinder (23); a round rod (251) is fixed on the belt conveyor (1); the cleaning scraper (25) is fixed to the end of the round rod (251) away from the belt conveyor (1); a connecting piece (27) is fixed on the side of the cleaning scraper (25) away from the outer cylinder (23); a V-shaped trough (26) is fixed on the side of the connecting piece (27) away from the cleaning scraper (25); the V-shaped trough (26) is flexibly connected to the cleaning scraper (25) via the connecting piece (27); a supporting rod (28) is also fixed on the belt conveyor (1); the V-shaped trough (26) is fixed to the end of the supporting rod (28) away from the belt conveyor (1).

2. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: The V-shaped material trough (26) and the cleaning scraper (25) are both arranged at an inclination.

3. The silicon carbide multi-stage magnetic separation device according to claim 2, characterized in that: The through slot (242) is opened at an angle, and the angle of inclination and the direction of inclination of the through slot (242) are the same as the angle of inclination and the direction of inclination of the cleaning scraper (25).

4. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: The cross sections of both ends of the outer cylinder (23) are truncated cone-shaped.

5. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: The thickness of the inner magnet (24) gradually increases from the upper side end of the through slot (242) to the other side end thereof.

6. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: A material storage box (29) is detachably connected to one side of the belt conveyor (1), and the lower end of the V-shaped material trough (26) is arranged above the material storage box (29).

7. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: A vibration assembly (3) is arranged on the output shaft of the motor (22), and the vibration assembly (3) comprises a rotating disk (31) fixedly sleeved on the output shaft of the motor (22) and a spring member (34) arranged on the support rod (28). A plurality of arc-shaped protrusions (311) are also fixed on the outer peripheral side of the rotating disk (31). A connecting rod (32) is also fixed on the end of the V-shaped material groove (26). The end of the connecting rod (32) away from the V-shaped material groove (26) is rotatably connected to the rotating disk (33). The rotating disk (31) is fitted with the rotating disk (33). When in use, the rotating disk (31) rotates, and different arc-shaped protrusions (311) intermittently contact the rotating disk (33) and cause the rotating disk (33) to jump along the radial direction of the rotating disk (31). The support rod (28) is arranged tilted.

8. The silicon carbide multi-stage magnetic separation device according to claim 1, characterized in that: A second shaft (244) is fixed to the inner wall of the outer cylinder (23) on the side close to the motor (22), a circular groove is provided on the side of the inner support frame (241) close to the motor (22), and the second shaft (244) is rotatably connected to the circular groove at one end away from the inner cylinder.

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