Centrifugal purification device and method in graphite purification process

Abstract

The application discloses a centrifugal purification device and method in a graphite purification process, and belongs to the technical field of graphite preparation. The device comprises a purification furnace, a centrifugal mechanism, a coating mechanism and an electromagnetic driving mechanism. When the graphite material is subjected to heat treatment in the purification furnace, the material accumulation can be avoided by the centrifugal mechanism, the gap between the graphite materials is increased, the contact area between the heat energy and the graphite materials is increased, and the uniform heating of the graphite materials in the same batch in the purification process is preliminarily ensured. The heat conduction medium can flow from the cavity of the sliding pipe to the oil guide sleeve and be dispersed on the fiber bundle by the electromagnetic driving mechanism, and then the sliding pipe rotates along the groove, the heat conduction medium on the fiber bundle is uniformly coated on the outer surface of the purification furnace, the heat is rapidly transmitted to the surface of the purification furnace, and is uniformly distributed in the whole container by heat conduction, so that the insufficient purification of the graphite materials in the same batch and the inconsistent product quality caused by the uneven heating in the purification furnace are prevented.

Description

Technical Field

[0001] This invention relates to the field of graphite preparation technology, and more specifically, to a centrifugal purification apparatus and method in a graphite purification process. Background Technology

[0002] Graphite is an allotrope of carbon, a grayish-black, opaque solid. It is chemically stable, corrosion-resistant, and does not readily react with acids, alkalis, or other reagents. Natural graphite comes from graphite deposits, but it can also be produced from petroleum coke, pitch coke, and other raw materials through a series of processing steps. Artificial graphite is not simply composed of elemental carbon; it contains other impurities and chemical substances. These impurities and substances are removed by introducing chemical gases. After purification, graphite's electrical conductivity, lubrication, and high-temperature resistance are all improved.

[0003] Commonly used centrifugal equipment in existing technologies includes centrifuges and centrifugal mixers. Centrifuges are typically used in graphite purification processes to separate graphite from mixtures of liquids or gases being processed, removing liquid residues generated during the process, such as pickling agents or other solvents. Centrifugal mixers, on the other hand, are used less frequently in graphite purification processes. Purification furnaces are one type of equipment used for high-temperature treatment and purification of graphite. Graphite undergoes high-temperature treatment in the purification furnace, a process that helps remove volatile impurities from the graphite, such as gaseous and liquid residues, to improve its purity. They are used for uniform stirring of graphite under high-temperature conditions. However, in the use of existing purification furnaces, graphite materials... The graphite material tends to accumulate and compact at the bottom, especially for granular or powdered materials. This can lead to uneven temperature distribution within the furnace, causing some graphite material to receive excessive heat, resulting in localized overheating or insufficient heat. Although current purification furnaces are usually equipped with precise temperature control systems that can monitor and regulate the furnace temperature, the influence of external ambient temperature during use can still increase heat loss or require more energy to maintain the required operating temperature. At the same time, changes in external temperature, especially in excessively cold environments, can worsen the stability of the internal temperature of the purification furnace. All of these factors can affect the purification effect and quality of graphite.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a centrifugal purification device and method in the graphite purification process. Summary of the Invention

[0005] The purpose of this invention is to provide a centrifugal purification apparatus and method in a graphite purification process to solve the above-mentioned problems.

[0006] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0007] A centrifugal purification apparatus and method for graphite purification includes a purification furnace. The top of the purification furnace has a feed inlet. The purification furnace also includes a centrifugal mechanism, a coating mechanism, and an electromagnetic drive mechanism. The centrifugal mechanism includes a motor mounted on the upper surface of the purification furnace. The output shaft of the motor is fixedly connected to a drive shaft. The other end of the drive shaft is located at the inner bottom of the purification furnace and rotatably connected thereto. The outer end of the drive shaft has multiple blades with consistent vertical spacing and staggered arrangement. The surface of each blade has grooves. The coating mechanism includes an outer ring mounted on the outer wall of the purification furnace. The outer ring is located at the outer end of the purification furnace and fixedly connected thereto. The surface of the outer ring has grooves that divide the outer ring into inner and outer sides. A connecting block is fixedly connected within the grooves. A pair of sliding tubes are slidably connected within the grooves, located at the left and right ends of the connecting block, respectively. A reset rope is fixedly connected between each pair of sliding tubes and the connecting block. A slider is fixedly connected to the outer end of each sliding tube, and the diameter of the slider is larger than that of the groove. The slide tube has a cavity inside, an oil drain hole at its inner bottom, and a vertical rod at its inner end. A sealing gasket is fixedly connected to the outer end of the vertical rod, and a limiting rope is fixedly connected between the sealing gasket and the inner wall of the cavity. The cavity is filled with a heat-conducting medium, which is synthetic hydrocarbon heat-conducting oil. An extension rod is integrally formed at the lower end of the vertical rod. The end of the extension rod extending outside the cavity is flush with the inner bottom of the purification furnace. Multiple guide rods with uniform spacing are fixedly connected to the end of the extension rod near the purification furnace. Multiple fiber bundles are fixedly connected to the outer end of the guide rod. The ends of some of the fiber bundles away from the extension rod are in contact with the outer surface of the purification furnace. The electromagnetic drive mechanism includes electromagnet one, electromagnet two, electromagnet three, and electromagnet four. Electromagnet one is disposed on the surface of the connecting block, electromagnet two is disposed on the surface of the slide tube and near the connecting block, electromagnet three is disposed at the top of the cavity, and electromagnet four is disposed at the top of the vertical rod and directly below electromagnet three.

[0008] As a further improvement of the present invention, the purification furnace is a cylindrical body that gradually narrows from top to bottom, and the extension rod is an arc-shaped rod that matches the surface shape of the purification furnace.

[0009] As a further improvement of the present invention, the extension rod is made of an oleophobic material, and the guide rod includes a rigid rod body and an oil-guiding sleeve sleeved on the outer end of the rigid rod body. The rigid rod body is an inclined rod body with the end near the extension rod being the apex and the end near the purification furnace being the bottom.

[0010] As a further improvement of the present invention, both the oil guide sleeve and the fiber bundle are made of a high-temperature resistant and oleophilic material. The oleophilicity of the oil guide sleeve gradually increases from the end near the extension rod to the end near the purification furnace, and the density of the fiber bundle gradually increases from the end near the extension rod to the end near the purification furnace.

[0011] As a further improvement of the present invention, the diameter of the sealing gasket is larger than the diameter of the oil drain hole, the oil drain hole is a slanted hole that is wider at the top and narrower at the bottom, and multiple limiting ropes are provided, and the multiple limiting ropes are distributed in a ring array at the inner bottom end of the cavity.

[0012] As a further improvement of the present invention, a magnetic shielding ring is fixedly connected to the inner wall of the cavity inside the slide tube, and the shape of the magnetic shielding ring matches the shape of the cavity.

[0013] As a further improvement of the present invention, the lower end of the outer ring is detachably connected to a heat insulation sleeve, and the bottom surface of the heat insulation sleeve is in contact with the outer wall of the purification furnace. The heat insulation sleeve is made of a high-temperature resistant material.

[0014] As a further improvement of the present invention, a pair of sliding grooves are provided on the surface of the outer ring, the pair of sliding grooves are respectively located on the inner and outer sides of the groove, and a spherical groove is provided at the lower end of the slider, and a ball is provided in the spherical groove, and the ball is slidably connected to the sliding groove.

[0015] As a further improvement of the present invention, an oil injection hole is provided on the upper surface of the slide tube, and a screw cap is screwed onto the oil injection hole.

[0016] As a further improvement of the present invention, a centrifugal purification method in a graphite purification process includes the following steps:

[0017] S1. The graphite material is put into the purification furnace and the graphite material is stirred evenly by the centrifugal mechanism to avoid material accumulation. This can increase the gap between graphite materials and increase the contact area between heat energy and each graphite material, thus initially ensuring that the graphite material of the same batch in the purification furnace is heated evenly during the purification process.

[0018] S2. The electromagnetic drive mechanism first energizes the electromagnets three and four, so that the sealing gasket will release the blockage of the oil drain hole. The heat conduction medium flows from the oil drain hole to the extension rod, and then flows to the oil guide sleeve and fiber bundle. The electromagnets are then de-energized.

[0019] S3. By energizing the electromagnets one and two through the electromagnetic drive mechanism, the slide tube rotates along the groove, and the heat conduction medium on the fiber bundle is evenly coated on the outer surface of the furnace body, effectively isolating the external air to reduce the loss of heat from the furnace body surface.

[0020] S4. When the electromagnets one and two are de-energized, the fiber bundle will once again uniformly coat the remaining heat conduction medium on the outer surface of the purification furnace during the process of the reset rope driving the slide tube to reset. This will slowly form a superimposed heat conduction medium layer, which can prevent the heat conduction medium from being too thick or too thin in some places on the surface of the purification furnace.

[0021] Compared with the prior art, the advantages of this invention are:

[0022] In this scheme, during the heat treatment and purification of graphite materials, a centrifugal mechanism prevents material accumulation, increases the gap between graphite materials, and improves the contact area between heat energy and each graphite material. This initially ensures uniform heating of the same batch of graphite materials during purification. An electromagnetic drive mechanism allows the heat transfer medium to flow rapidly from the cavity of the sliding tube into the guide sleeve and disperse onto the fiber bundle. The sliding tube then rotates along the groove, uniformly coating the heat transfer medium on the outer surface of the purification furnace. This rapidly transfers heat to the furnace surface, resulting in uniform heating and purification of the graphite inside the furnace. During the process, the heat transfer medium can first effectively isolate the external air, playing a role in heat preservation to reduce the loss of heat from the furnace surface. The heat transfer medium can also realize a continuous, cyclical and efficient heat transfer process between the inside and outside of the purification furnace. This not only promotes the uniform distribution of heat, but also significantly enhances the heat transfer efficiency inside and outside the furnace. Finally, the isolation sleeve further isolates the influence of external temperature on the furnace body, ensuring the heat transfer effect after the heat transfer medium coating. This can effectively prevent the phenomenon of insufficient purification of graphite materials in the same batch and inconsistent product quality caused by uneven heating inside the furnace. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 This is a front sectional view of the present invention;

[0025] Figure 3 For the present invention Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 For the present invention Figure 2 Enlarged view at point B in the middle;

[0027] Figure 5 For the present invention Figure 2 Enlarged view at point C;

[0028] Figure 6 For the present invention Figure 2 Enlarged view at point D;

[0029] Figure 7This is a flowchart of a centrifugal purification method in a graphite purification process according to the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Purification furnace; 101. Feed inlet; 2. Centrifuge mechanism; 201. Motor; 202. Drive shaft; 203. Blade; 204. Groove; 3. Connecting block; 301. Electromagnet one; 4. Outer ring; 401. Groove; 402. Slide groove; 5. Slide tube; 501. Oil drain hole; 502. Sliding block; 503. Ball bearing; 504. Oil injection hole; 505. Electromagnet two; 506. Electromagnet three; 6. Reset rope; 7. Upright pole; 701. Extension rod; 702. Electromagnet four; 8. Sealing gasket; 9. Limiting rope; 10. Heat transfer medium; 11. Guide rod; 12. Fiber bundle; 13. Insulation sleeve. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] Please see Figure 1-6 A centrifugal purification apparatus and method for graphite purification process, comprising a purification furnace 1, with a feed inlet 101 at the top, the purification furnace 1 having a gradually decreasing diameter from top to bottom, the purification furnace 1 having a certain heat preservation performance, and the purification furnace 1 also having a centrifugal mechanism 2, a coating mechanism and an electromagnetic drive mechanism. The centrifugal mechanism 2 is set inside the purification furnace 1, which is different from the conventional centrifugal mechanism or heat treatment mechanism implementation in the prior art. It is worth noting that the purification furnace 1 also needs to be equipped with an exhaust component and a discharge component (not shown in the figure), both of which are prior art.

[0035] The centrifugal mechanism 2 includes a motor 201 mounted on the upper surface of the purification furnace 1. A drive shaft 202 is fixedly connected to the output shaft of the motor 201. The other end of the drive shaft 202 is located at the inner bottom of the purification furnace 1 and rotatably connected thereto. Multiple blades 203 with consistent vertical spacing and staggered arrangement are mounted on the outer end of the drive shaft 202. Both the drive shaft 202 and the blades 203 are made of high-temperature resistant material. Grooves 204 are formed on the surface of the blades 203. During heat treatment, starting the motor 201 drives the blades 203 to rotate, which can uniformly centrifuge and stir the graphite material inside the purification furnace 1. The grooves 204 move the material, achieving better mixing or increasing the material's flowability. The graphite material that can be processed in this solution is granular or powdered material. The centrifugal mechanism 2 avoids material accumulation and increases the gaps between graphite materials, forming a heat energy channel. This pushes gaseous and liquid residues in the graphite to the surface, making them easier to volatilize or decompose at high temperatures. During this process, the graphite materials are more evenly distributed, passively increasing the reaction surface area. The heat energy inside the purification furnace 1 can easily act on the surface of each graphite material through the gaps between them, increasing the contact area between the heat energy and each graphite material. This helps to initially ensure that the graphite materials of the same batch in the purification furnace 1 are heated evenly during the purification process, thereby improving the utilization rate of heat energy and avoiding problems such as local overheating or insufficient purification. This can significantly accelerate the purification process, improve processing efficiency, and ultimately achieve the goal of improving product quality and consistency.

[0036] The coating machine includes an outer ring 4, which is located at the transition between the purification furnace 1 and the centrifuge mechanism 2. The outer ring 4 is located at the outer end of the purification furnace 1 and is fixedly connected to it. The surface of the outer ring 4 has a groove 401, which divides the outer ring 4 into inner and outer sides. A connecting block 3 is fixedly connected inside the groove 401. A pair of sliding tubes 5 are slidably connected inside the groove 401. The pair of sliding tubes 5 are located at the left and right ends of the connecting block 3, respectively, and a reset rope 6 is fixedly connected between each pair of sliding tubes 5 and the connecting block 3. A slider 502 is fixedly connected to the outer end of the sliding tube 5, and the diameter of the slider 502 is larger than the groove width of the groove 401. The inside of the sliding tube 5 has a cavity filled with a heat transfer medium 10. The heat transfer medium 10 is synthetic hydrocarbon heat transfer oil. Excellent high and low temperature resistance and oxidation corrosion resistance ensure stable performance in harsh working environments. During the purification of graphite materials, the heat transfer medium 10 effectively isolates the external air, providing insulation to reduce heat loss from the surface of the purification furnace 1. The heat transfer medium 10 also enables a continuous, cyclical, and efficient heat transfer process between the inside and outside of the purification furnace 1. This not only promotes uniform heat distribution but also significantly enhances the heat transfer efficiency of the purification furnace 1, effectively preventing local temperature deviations from the overall temperature within the furnace 1. This further ensures more uniform heating of the graphite material inside the furnace, maximizing thermal energy utilization. An oil drain hole 501 is provided at the inner bottom of the sliding tube 5. An upright rod 7 is also provided at the inner end of the tube 5. A sealing gasket 8 is fixedly connected to the outer end of the upright rod 7. Limiting ropes 9 are fixedly connected between the sealing gasket 8 and the inner wall of the cavity. The diameter of the sealing gasket 8 is larger than the diameter of the oil drain hole 501. The oil drain hole 501 is a slanted hole that is wider at the top and narrower at the bottom. When the sealing gasket 8 does not block the oil drain hole 501, the heat conduction medium 10 inside the cavity can be more easily discharged to the outside from this point. Multiple limiting ropes 9 are provided, with no less than 8 limiting ropes 9. The multiple limiting ropes 9 are arranged in a ring array at the inner bottom end of the cavity to ensure that the sealing gasket 8 seals the oil drain hole 501 under normal conditions. An extension rod 701 is integrally formed at the lower end of the upright rod 7. The end of the extension rod 701 extending outside the cavity is flush with the inner bottom end of the purification furnace 1. 1 is a cylindrical body that gradually narrows from top to bottom. The extension rod 701 is an arc-shaped rod that matches the surface shape of the purification furnace 1. Multiple guide rods 11 with consistent spacing are fixedly connected to the end of the extension rod 701 closest to the purification furnace 1. Multiple fiber bundles 12 are fixedly connected to the outer end of the guide rods 11. Some fiber bundles 12 have ends away from the extension rod 701 that are in contact with the outer surface of the purification furnace 1. The extension rod 701 is made of a high-temperature resistant and oleophobic material. The guide rod 11 includes a rigid rod body and an oil-guiding sleeve fitted onto the outer end of the rigid rod body. The rigid rod body is an inclined rod body with the end closest to the extension rod 701 as the apex and the end closest to the purification furnace 1 as the basal point. Both the oil-guiding sleeve and the fiber bundles 12 are made of a high-temperature resistant and oleophilic material, such as aramid fiber.The oleophilicity of the oil-guiding sleeve gradually increases from the end near the extension rod 701 to the end near the purification furnace 1. The density of the fiber bundle 12 also gradually increases from the end near the extension rod 701 to the end near the purification furnace 1. After the heat transfer medium 10 in the cavity flows from the drain hole 501 to the surface of the extension rod 701, the hydrophobic heat transfer medium 10 flows at a very high speed to the oil-guiding sleeve on the guide rod 11. Due to the obliquely arranged rigid rod and the stronger oleophilicity of the oil-guiding sleeve near the purification furnace 1, it converges at the bottom of the oil-guiding sleeve and disperses onto the densely arranged fiber bundle 12 at the outer end of the oil-guiding sleeve. Finally, the fiber bundle 12 uniformly coats the outer surface of the purification furnace 1. The soft fiber bundle 12 can also coat the surface of the purification furnace 1 located below the connecting block 3.

[0037] The electromagnetic drive mechanism includes electromagnet 1 (301), electromagnet 2 (505), electromagnet 3 (506), and electromagnet 4 (702). Electromagnet 1 (301) is mounted on the surface of connecting block 3. Electromagnet 2 (505) is mounted on the surface of slide tube 5 and close to the side of connecting block 3. Electromagnet 3 (506) is mounted at the top of the cavity. Electromagnet 4 (702) is mounted at the top of the upright 7 and directly below electromagnet 3 (506). The connection and disconnection between electromagnet 1 (301) and electromagnet 2 (505), and between electromagnet 3 (506) and electromagnet 4 (702) are controlled by an external program. Personnel can set timed start and stop functions according to actual conditions. A magnetic shielding ring is fixedly connected to the inner wall of the cavity inside slide tube 5, and the shape of the magnetic shielding ring matches the shape of the cavity, which can effectively prevent magnetic interference between the two sets of electromagnets and ensure the normal operation of the equipment.

[0038] It is worth noting that electromagnet 301 and electromagnet 505 are a pair of electromagnets that work together. When the external program controls their energization, electromagnet 505 will drive the slide tube 5 to move away from the connecting block 3. Electromagnet 306 and electromagnet 402 are a pair of electromagnets that work together. When the external program controls their energization, electromagnet 402 will drive the upright rod 7 and the extension rod 701 to move in the direction of electromagnet 306. In actual use, electromagnets 306 and 402 need to be energized first. The sealing gasket 8 will release the blockage of the oil drain hole 501, and the heat transfer medium 10 will flow from the oil drain hole 501 to the extension rod 701, and then flow to the oil guide sleeve and the fiber bundle 12. Then, the electromagnets are de-energized and electromagnets 301 and 505 are energized, so that the slide tube 5 moves along the groove 401. The sliding motion causes the fiber bundle 12 to uniformly coat the heat conduction medium 10 on its surface onto the outer surface of the purification furnace 1, thereby effectively transferring heat to the surface of the purification furnace 1 and distributing it evenly throughout the container through heat conduction. A flexible pad can be placed on the groove 401 opposite to the connecting block 3 to prevent the two sliding tubes 5 from colliding. After the electromagnets 301 and 505 are de-energized, the fiber bundle 12, during the reset process of the sliding tube 5 driven by the reset rope 6, once again uniformly coats the remaining heat conduction medium 10 on the outer surface of the purification furnace 1, slowly forming a superimposed heat conduction medium layer. This can prevent the heat conduction medium 10 from being too thick or too thin in some areas on the surface of the purification furnace 1. The frequency and interval of the electromagnetic drive mechanism driving the two sets of electromagnets to switch on and off are set according to the specific working conditions.

[0039] The lower end of the outer ring 4 is detachably connected to a heat-insulating sleeve 13, and the bottom surface of the heat-insulating sleeve 13 is in contact with the outer wall of the purification furnace 1. The heat-insulating sleeve 13 is made of high-temperature resistant material to further isolate the influence of external temperature on the purification furnace 1, ensuring the heat transfer effect after the heat transfer medium 10 is coated on the surface of the purification furnace 1, thereby ensuring that the inside of the purification furnace 1 is in a uniform heating state. In specific implementation, if the heat transfer medium 10 is not contaminated and is in good condition during use, and the purification furnace 1 will be used continuously or restarted in a short period of time, then it may not be necessary to clean it immediately. When the heat transfer medium 10 is used for a long time and the purification furnace 1 needs to be shut down for maintenance, the heat-insulating sleeve 1 can be removed. After step 3, the heat transfer medium 10 on the surface of the purification furnace 1 and inside the insulation sleeve 13 can be inspected and cleaned to ensure the effectiveness of the heat transfer medium 10 and the cleanliness of the furnace surface, preparing for the next use. A pair of sliding grooves 402 are provided on the surface of the outer ring 4. The pair of sliding grooves 402 are located on the inner and outer sides of the groove 401 respectively. A spherical groove is provided at the lower end of the slider 502. A ball bearing 503 is provided in the spherical groove. The ball bearing 503 is slidably connected to the sliding groove 402, so that the slide tube 5 can slide easily when the electromagnet program is started. An oil injection hole 504 is provided on the upper surface of the slide tube 5. A screw cap is screwed to the oil injection hole 504 for adding or replacing the heat transfer medium 10 in the cavity.

[0040] A centrifugal purification method in a graphite purification process includes the following steps:

[0041] S1. The graphite material is put into the purification furnace 1 and the graphite material is stirred evenly by the centrifugal mechanism to avoid material accumulation. This can increase the gap between the graphite materials and increase the contact area between the heat energy and each graphite material, thus initially ensuring that the same batch of graphite materials in the purification furnace 1 is heated evenly during the purification process.

[0042] S2. The electromagnetic drive mechanism first energizes the electromagnets 3506 and 4702, so that the sealing gasket 8 will release the blockage of the oil drain hole 501. The heat conduction medium 10 flows from the oil drain hole 501 to the extension rod 701, and then flows to the oil guide sleeve and fiber bundle 12. The electromagnets are then de-energized.

[0043] S3. The electromagnetic drive mechanism energizes the electromagnets 301 and 505, causing the slide tube 5 to rotate along the groove 401, uniformly coating the heat conduction medium 10 on the fiber bundle 12 onto the outer surface of the furnace body, effectively isolating it from the outside air to reduce the loss of heat from the furnace body surface.

[0044] S4. When the electromagnets 301 and 505 are de-energized, the fiber bundle 12 will once again uniformly coat the remaining heat conduction medium 10 on the outer surface of the purification furnace 1 during the process of the reset rope 6 driving the slide tube 5 to reset. This will slowly form a superimposed heat conduction medium layer, which can prevent the heat conduction medium 10 from being too thick or too thin in some places on the surface of the purification furnace 1.

[0045] In this scheme, during the heat treatment and purification of graphite materials, the centrifugal mechanism 2 can prevent material accumulation, increase the gap between graphite materials, and increase the contact area between heat energy and each graphite material, initially ensuring uniform heating of the same batch of graphite materials during purification. The electromagnetic drive mechanism allows the heat transfer medium 10 to flow rapidly from the cavity of the slide tube 5 into the guide sleeve and disperse onto the fiber bundle 12. Subsequently, the slide tube 5 rotates along the groove 401, uniformly coating the heat transfer medium 10 on the fiber bundle 12 onto the outer surface of the furnace body. During the uniform heating and purification of graphite inside the furnace body... The heat transfer medium 10 can first effectively isolate the external air, thus playing a heat preservation role and reducing the loss of heat from the furnace surface. The heat transfer medium 10 can also realize a continuous, cyclical and efficient heat transfer process between the inside and outside of the furnace. This not only promotes the uniform distribution of heat but also significantly enhances the heat transfer efficiency of the furnace. Finally, the isolation sleeve 13 further isolates the influence of the external temperature on the furnace, ensuring the heat transfer effect after the heat transfer medium 10 is coated. This can effectively prevent uneven heating inside the furnace, which can lead to insufficient purification of graphite materials in the same batch and inconsistent product quality.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A centrifugal purification device for graphite purification process, characterized in that: include: Purification furnace (1), the top of the purification furnace (1) is provided with a feed inlet (101), and the purification furnace (1) is also provided with a centrifugation mechanism (2), a coating mechanism and an electromagnetic drive mechanism; The centrifugation mechanism (2) includes a motor (201) mounted on the upper surface of the purification furnace (1). The output shaft of the motor (201) is fixedly connected to a drive shaft (202). The other end of the drive shaft (202) is mounted on the inner bottom of the purification furnace (1) and rotatably connected thereto. The outer end of the drive shaft (202) is provided with multiple blades (203) with consistent vertical spacing and staggered distribution. The surface of the blades (203) is provided with slots (204). The coating mechanism includes an outer ring (4), which is disposed on the outer wall of the purification furnace (1). The outer ring (4) is disposed at the outer end of the purification furnace (1) and fixedly connected thereto. The surface of the outer ring (4) is provided with a groove (401), which divides the outer ring (4) into inner and outer sides. A connecting block (3) is fixedly connected in the groove (401). A pair of sliding tubes (5) are slidably connected in the groove (401). The pair of sliding tubes (5) are located at the left and right ends of the connecting block (3), and a reset rope (6) is fixedly connected between the pair of sliding tubes (5) and the connecting block (3). A slider (502) is fixedly connected to the outer end of the sliding tube (5), and the diameter of the slider (502) is greater than the groove width of the groove (401). A cavity is provided inside the sliding tube (5), and the inner bottom end of the sliding tube (5) is provided with a cavity. There is an oil drain hole (501), and the inner end of the slide tube (5) is also provided with a vertical rod (7). The outer end of the vertical rod (7) is fixedly connected with a sealing gasket (8). The sealing gasket (8) and the inner wall of the cavity are both fixedly connected with a limiting rope (9). The cavity is filled with a heat transfer medium (10). The heat transfer medium (10) is synthetic hydrocarbon heat transfer oil. The lower end of the vertical rod (7) is integrally formed with an extension rod (701). The end of the extension rod (701) extending outside the cavity is flush with the inner bottom end of the purification furnace (1). The end of the extension rod (701) near the purification furnace (1) is fixedly connected with multiple guide rods (11) with the same spacing. The outer end of the guide rod (11) is fixedly connected with multiple fiber bundles (12). The end of some of the fiber bundles (12) away from the extension rod (701) is in contact with the outer surface of the purification furnace (1). The electromagnetic drive mechanism includes electromagnet one (301), electromagnet two (505), electromagnet three (506) and electromagnet four (702). Electromagnet one (301) is disposed on the surface of the connecting block (3), electromagnet two (505) is disposed on the surface of the slide tube (5) and close to the side of the connecting block (3), electromagnet three (506) is disposed at the top of the cavity, and electromagnet four (702) is disposed at the top of the upright (7) and located directly below electromagnet three (506).

2. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: The purification furnace (1) is a cylindrical body that gradually narrows from top to bottom, and the extension rod (701) is an arc-shaped rod that matches the surface shape of the purification furnace (1).

3. The centrifugal purification device in a graphite purification process according to claim 2, characterized in that: The extension rod (701) is made of an oleophobic material. The guide rod (11) includes a rigid rod body and an oil-guiding sleeve sleeved on the outer end of the rigid rod body. The rigid rod body is an inclined rod body with the end near the extension rod (701) being the apex and the end near the purification furnace (1) being the bottom.

4. The centrifugal purification device in a graphite purification process according to claim 3, characterized in that: Both the oil guide sleeve and the fiber bundle (12) are made of a high-temperature resistant and oleophilic material. The oleophilicity of the oil guide sleeve gradually increases from the end near the extension rod (701) to the end near the purification furnace (1). The density of the fiber bundle (12) gradually increases from the end near the extension rod (701) to the end near the purification furnace (1).

5. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: The diameter of the sealing gasket (8) is larger than the diameter of the drain hole (501). The drain hole (501) is a slanted hole that is wider at the top and narrower at the bottom. Multiple limiting ropes (9) are provided, and the multiple limiting ropes (9) are arranged in a ring array at the bottom of the cavity.

6. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: A magnetic shielding ring is fixedly connected to the inner wall of the cavity of the slide tube (5), and the shape of the magnetic shielding ring matches the shape of the cavity.

7. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: The lower end of the outward ring (4) is detachably connected to a heat insulation sleeve (13), and the bottom surface of the heat insulation sleeve (13) is in contact with the outer wall of the purification furnace (1). The heat insulation sleeve (13) is made of high temperature resistant material.

8. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: The outer ring (4) has a pair of sliding grooves (402) on its surface. The pair of sliding grooves (402) are located on the inner and outer sides of the groove (401) respectively. The lower end of the slider (502) has a spherical groove. A ball (503) is provided in the spherical groove. The ball (503) is slidably connected to the sliding groove (402).

9. The centrifugal purification device in a graphite purification process according to claim 1, characterized in that: The upper surface of the slide tube (5) is provided with an oil injection hole (504), and a screw cap is screwed onto the oil injection hole (504).

10. A centrifugal purification method in a graphite purification process, comprising using a centrifugal purification apparatus as described in any one of claims 1-9, characterized in that: The work includes the following steps: S1. The graphite material is put into the purification furnace (1). The graphite material is stirred evenly by the centrifugal mechanism to avoid material accumulation. This can increase the gap between graphite materials and increase the contact area between heat energy and each graphite material, thus initially ensuring that the graphite material of the same batch in the purification furnace (1) is heated evenly during the purification process. S2. The electromagnetic drive mechanism first energizes the electromagnets 3 (506) and 4 (702), so that the sealing gasket (8) will release the blockage of the oil drain hole (501), and the heat conduction medium (10) flows from the oil drain hole (501) to the extension rod (701), and then flows to the oil guide sleeve and the fiber bundle (12), and then the electromagnets are de-energized. S3. By energizing the electromagnets 1 (301) and 2 (505) through the electromagnetic drive mechanism, the slide tube (5) rotates along the groove (401) to uniformly coat the heat conduction medium (10) on the fiber bundle (12) onto the outer surface of the furnace body, effectively isolating the external air and reducing the loss of heat from the furnace body surface. S4. When the electromagnets 1 (301) and 2 (505) are de-energized, the reset rope (6) drives the slide tube (5) to reset. During this process, the fiber bundle (12) once again evenly coats the remaining heat conduction medium (10) on the outer surface of the purification furnace (1), slowly forming a superimposed heat conduction medium layer. This can prevent the heat conduction medium (10) from being too thick or too thin in some places on the surface of the purification furnace (1).

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