Discharging cooling device and graphitization furnace

Abstract

The invention relates to the technical field of graphitization equipment, and discloses a discharged material cooling device and a graphitization furnace, the discharged material cooling device comprises a first inner cylinder, a first outer cylinder, a first inlet, a first outlet and a spoiler. The first inner cylinder is vertically arranged, the first outer cylinder is arranged on the periphery of the first inner cylinder, and a first cooling channel is formed between the first outer cylinder and the first inner cylinder. The first inlet and the first outlet are formed in the first outer cylinder and communicate with the first cooling channel. The turbulent flow piece comprises a turbulent flow section and a connecting section which are sequentially arranged from top to bottom and connected with each other, the connecting section is connected with the first inner cylinder through a connecting piece, the connecting section and the inner wall of the first inner cylinder are arranged at an interval, and the width of the turbulent flow section is gradually reduced from bottom to top. And in the falling process of the high-temperature materials in the first inner cylinder, the turbulent flow section disturbs falling of the materials. The material falling on the turbulent flow section is guided to the outer side by the turbulent flow section and is closer to the inner wall of the first inner cylinder, so that the distance between the inner material and the inner wall of the first inner cylinder is shortened, and the difference between the cooling effects of the inner material and the outer material is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of graphitization equipment, and in particular to a discharge cooling device and a graphitization furnace. Background Art

[0002] A graphitization furnace is a key piece of equipment used for high-temperature graphitization of carbon materials. Its core function is to rearrange the carbon atoms in the material through high-temperature heat treatment, forming a layered graphite crystal structure. This significantly improves the material's electrical conductivity, thermal conductivity, high-temperature resistance, and chemical stability. To facilitate subsequent processing, the material needs to be cooled after high-temperature graphitization. Therefore, a graphitization furnace often consists of a main body and a discharge cooling device. The main body is used for high-temperature graphitization of the carbon material, allowing the material to be discharged from the discharge port of the main body and then enter the discharge cooling device for cooling.

[0003] Existing discharge cooling devices utilize a conventional water-cooled jacket, with both the inner and outer sleeves being cylindrical. Cold water circulates through the interlayer between the inner and outer sleeves. As the material falls through the inner sleeve, it exchanges heat with the cold water within the jacket, thereby cooling the material. However, material near the inner sleeve's sidewalls, due to their proximity to the water-cooling channel, experiences better cooling. Material near the inner sleeve's axis, due to its greater distance from the cold water, experiences poorer cooling, resulting in a significant difference in cooling effect between the inner and outer materials. Summary of the Invention

[0004] In view of this, the present application provides a discharge cooling device and a graphitization furnace to solve or improve the problem of large differences in cooling effects between internal and external materials.

[0005] In a first aspect, the present application provides a discharge cooling device, comprising:

[0006] A first inner cylinder is vertically arranged and used for material circulation;

[0007] a first outer cylinder, disposed on the periphery of the first inner cylinder, and forming a first cooling channel for circulating a cooling medium between the first outer cylinder and the first inner cylinder;

[0008] a first inlet, provided on the first outer cylinder and communicating with the first cooling channel;

[0009] a first outlet, provided on the first outer cylinder and communicating with the first cooling channel;

[0010] The spoiler includes a spoiler section and a connecting section which are sequentially arranged from top to bottom and connected to each other. The connecting section is connected to the first inner tube through the connecting member and is spaced apart from the inner wall of the first inner tube. The width of the spoiler section gradually decreases from bottom to top.

[0011] Optionally, the first inner tube includes a necking section, and the inner diameter of the necking section is smaller than the inner diameter of other parts of the first inner tube.

[0012] Optionally, at least two spoilers are provided, and in the vertical direction, one of the spoilers is located on the upper side of the necking section, and the other spoiler is located on the lower side of the necking section.

[0013] Optionally, it also includes:

[0014] a second inner cylinder, vertically arranged and used for material circulation, the second inner cylinder being connected to the first inner cylinder;

[0015] a second outer cylinder, disposed on the periphery of the second inner cylinder, and forming a second cooling channel for circulating a cooling medium between the second outer cylinder and the second inner cylinder;

[0016] a second inlet, provided on the second outer cylinder and communicating with the second cooling channel;

[0017] A second outlet is provided on the second outer cylinder and communicated with the second cooling channel.

[0018] Optionally, it also includes:

[0019] a third inner cylinder, vertically arranged and used for material circulation, wherein the inner diameter of the third inner cylinder decreases from top to bottom, and the third inner cylinder is connected to the first inner cylinder;

[0020] a third outer cylinder, disposed on the periphery of the third inner cylinder, and forming a third cooling channel for circulating a cooling medium between the third outer cylinder and the third inner cylinder;

[0021] a third inlet, provided on the third outer cylinder and communicating with the third cooling channel;

[0022] A third outlet is provided on the third outer cylinder and communicates with the third cooling channel.

[0023] Optionally, it also includes:

[0024] a material container, provided with a material inlet and a material outlet, wherein the material inlet is communicated with the first inner cylinder, the material outlet is located at the bottom of the material container, and a fourth cooling channel is provided in the side wall of the material container;

[0025] a fourth inlet, provided on the material container and communicating with the fourth cooling channel;

[0026] A fourth outlet is provided on the material container and is communicated with the fourth cooling channel.

[0027] Optionally, it also includes:

[0028] A rotating shaft is vertically and rotatably connected to the material container. A spiral blade is connected to the outer wall of the rotating shaft to transport the material upward during rotation. The material outlet and the rotating shaft are staggered in the vertical direction.

[0029] A driving device is connected to the material container and is in driving connection with the rotating shaft, and the driving device is used to drive the rotating shaft to rotate.

[0030] Optionally, at least two rotating shafts are provided, wherein the two rotating shafts are arranged opposite to each other.

[0031] Optionally, a fifth cooling channel suitable for the circulation of cooling medium is provided inside the rotating shaft.

[0032] In a second aspect, the present application further provides a graphitization furnace, comprising a graphitization furnace body and any of the above-mentioned discharge cooling devices.

[0033] The present application provides a discharge cooling device and graphitization furnace, comprising a first inner tube, a first outer tube, a first inlet, a first outlet, and a spoiler. The first inner tube is vertically arranged and used for material circulation. The first outer tube is disposed on the periphery of the first inner tube, and a first cooling channel for the circulation of a cooling medium is formed between the first outer tube and the first inner tube. The first inlet is disposed on the first outer tube and communicates with the first cooling channel. The first outlet is disposed on the first outer tube and communicates with the first cooling channel. The spoiler includes a spoiler section and a connecting section, which are sequentially arranged from top to bottom and interconnected. The connecting section is connected to the first inner tube via a connecting member and is spaced apart from the inner wall of the first inner tube. The width of the spoiler section gradually decreases from bottom to top. When the graphitized high-temperature material is discharged from the discharge port of the graphitization furnace body and falls, it is transported downward along the first inner tube. As the high-temperature material falls, it exchanges heat with the cold water in the first cooling channel, thereby cooling the high-temperature material. The spoiler section interferes with the falling of the material. Since the width of the spoiler section of the spoiler gradually decreases from bottom to top, the material falling on the spoiler section is guided outward by the spoiler section and closer to the inner wall of the first inner cylinder, thereby shortening the distance between the inner material and the inner wall of the first inner cylinder, thereby enhancing the cooling effect on the inner material and reducing the difference in cooling effect between the inner and outer materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of this application or the technical solutions in related technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a schematic structural diagram of a discharge cooling device according to an embodiment of the present application;

[0036] Figure 2 This is a schematic structural diagram of a first inner cylinder and a first outer cylinder of a discharge cooling device according to an embodiment of the present application;

[0037] Figure 3 A top view of a first inner cylinder and a first outer cylinder of a discharge cooling device according to an embodiment of the present application;

[0038] Figure 4 This is a schematic structural diagram of the second inner cylinder and the second outer cylinder of a discharge cooling device according to an embodiment of the present application;

[0039] Figure 5 This is a schematic structural diagram of the third inner cylinder and the fourth outer cylinder of a discharge cooling device according to an embodiment of the present application;

[0040] Figure 6 This is a schematic diagram of the material container structure of a discharge cooling device in an embodiment of the present application.

[0041] Figure 7 This is a schematic diagram of the rotating shaft structure of a discharge cooling device according to an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. First inner tube; 101. Neck section; 2. First outer tube; 3. First cooling channel; 4. First inlet; 5. First outlet; 6. Spoiler; 601. Spoiler section; 602. Connecting section; 7. Connecting piece; 8. Second inner tube; 9. Second outer tube; 10. Second inlet; 11. Second outlet; 12. Second cooling channel; 13. Third inner tube; 14. Third outer tube; 15. Third inlet; 16. Third outlet; 17. Third cooling channel; 18. Material container; 181. Material inlet; 182. Material outlet; 19. Fourth inlet; 20. Fourth outlet; 21. Fourth cooling channel; 22. Rotating shaft; 221. Inner shaft; 2211. Flow channel; 222. Outer shaft; 2221. Accommodating chamber; 2201. Spiral blade; 2202. Fifth inlet; 2203. Fifth outlet; 23. Driving device. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0045] The following combination Figures 1 to 7, describing the embodiments of the present application.

[0046] According to an embodiment of the present application, on the one hand, a discharge cooling device is provided, such as Figure 2 As shown, it includes: a first inner cylinder 1, a first outer cylinder 2, a first inlet 4, a first outlet 5 and a spoiler 6. The first inner cylinder 1 is vertically arranged and is used for material circulation. After the first inner cylinder 1 is connected to the discharge port of the graphitization furnace body, the high-temperature material after graphitization is discharged from the discharge port of the graphitization furnace body and flows through the first inner cylinder 1.

[0047] The first outer tube 2 is sleeved around the outer periphery of the first inner tube 1 and is spaced apart from the first inner tube 1 to form a first cooling channel 3. A first inlet 4 is provided on the first outer tube 2 and communicates with the first cooling channel 3. A first outlet 5 is provided on the first outer tube 2 and communicates with the first cooling channel 3. Thus, after cold water as a cooling medium is introduced through the first inlet 4, the cold water enters the first cooling channel 3 and circulates, and is discharged through the first outlet 5.

[0048] The spoiler 6 includes a spoiler section 601 and a connecting section 602. The spoiler section 601 and the connecting section 602 are connected to each other. The connecting section 602 is connected to the inner wall of the first inner tube 1 via a connecting member 7. The spoiler section 601 and the connecting section 602 are arranged sequentially from top to bottom. In this case, the spoiler 6 is spaced apart from the inner wall of the first inner tube 1 via the connecting member 7. The width of the spoiler section 601 gradually decreases from bottom to top.

[0049] In this way, cold water is continuously introduced into the first inlet 4, so that the cold water continuously flows through the first cooling channel 3. When the graphitized high-temperature material is discharged from the discharge port of the graphitization furnace body and falls, it enters the first inner cylinder 1 and is transported downward along the first inner cylinder 1. During the falling process, the high-temperature material exchanges heat with the cold water in the first cooling channel 3, thereby cooling the high-temperature material.

[0050] As the high-temperature material falls, the spoiler section 601 interferes with its descent. Because the width of the spoiler section 601 of the spoiler 6 gradually decreases from bottom to top, the material falling onto the spoiler section 601 is guided outward by the spoiler section 601, closer to the inner wall of the first inner tube 1. This shortens the distance between the material near the inside and the inner wall of the first inner tube 1, thereby enhancing the cooling effect on the material near the inside and reducing the difference in cooling effect between the inner and outer materials.

[0051] Moreover, since the connecting member 7 is located in the first inner tube 1, the connecting member 7 can also produce a certain disturbance effect on the falling materials.

[0052] The connecting member 7 may be a connecting rod, one end of which is connected to the connecting end of the spoiler 6 and the other end is connected to the inner wall of the first inner tube 1 , thereby connecting the spoiler 6 and the inner wall of the first inner tube 1 through the connecting member 7 and setting them at intervals.

[0053] The spoiler 6 can be eccentrically arranged, that is, arranged between the axis and the inner wall of the first inner tube 1, to better disturb the material. Further, the spoiler 6 can be arranged at one-third of the inner diameter of the first inner tube 1.

[0054] The flow rate of the cooling water is controlled at 0.5-1.5 m / s. The distance between the outer wall of the first inner tube 1 and the inner wall of the first outer tube 2 is 100 mm-200 mm, and the height of the first inner tube 1 is set to 3 m.

[0055] The first inlet 4 is located below the first outlet 5 .

[0056] As an optional embodiment, Figure 2 As shown, the first inner tube 1 includes a necking section 101, and the rest of the tube is straight except for the necking section 101. The inner wall of the necking section 101 is a concave arc surface, so that the inner diameter of the necking section 101 at any position is smaller than the inner diameter of the rest of the tube 1 except for the necking section 101.

[0057] With this arrangement, when the high-temperature material falls in the first inner tube 1, due to the reduction in the inner diameter, when the high-temperature material falls in the necking section 101, the distance between the inner material and the inner wall of the first inner tube 1 is shortened, thereby enhancing the cooling effect on the inner material and reducing the difference in cooling effect between the inner and outer materials.

[0058] The shrinkage ratio of the necking section 101 is 10-20% compared with other parts except the necking section 101. The spoiler 6 is made of a high temperature resistant and wear resistant material, such as silicon carbide.

[0059] In a further embodiment, at least two spoilers 6 are provided, such as Figure 2 and Figure 3 As shown, two or more spoilers 6 can be provided. Multiple spoilers 6 simultaneously turbulently affect the falling material, and each turbulence causes the inner material to move outward and closer to the inner wall of the first inner tube 1, further enhancing the cooling effect on the inner material.

[0060] In the vertical direction, one of the spoilers 6 is disposed on the upper side of the necked section 101 , and the other spoiler 6 is located on the lower side of the necked section 101 .

[0061] In this way, when the material falls, it is first disturbed by a spoiler 6, then flows through the necking section 101, and then disturbed by another spoiler 6, which has a better disturbing effect on the material, so that the material near the inside can obtain a better cooling effect.

[0062] In the vertical direction, the distance between the bottom of the spoiler 6 located above and the top of the spoiler 6 located below is 300 mm-400 mm.

[0063] In some embodiments, the two spoilers 6 are horizontally symmetrically arranged relative to the axis of the first inner tube 1, that is, the two spoilers 6 are equidistant from the inner wall of the first inner tube 1. In this case, the two spoilers 6 disrupt the flow of the material at different heights on either side, resulting in a better disturbance effect, thereby achieving a more balanced cooling effect on the overall material and reducing the difference in cooling effect between the inner and outer materials.

[0064] In order to increase the flow efficiency of the material, the bottom of the connecting section 602 of the spoiler 6 can be set to a cone shape. In this way, after the material is disturbed by the spoiler 6, it can quickly restore the original flow area, making the flow efficiency of the material higher. The slope of the cone is set to 40°-50°.

[0065] The slope of the spoiler section 601 is set to 20°-30°, the diameter of the connecting section 602 is set to 200mm-400mm, and the overall height of the spoiler 6 is set to 500mm-1500mm.

[0066] As an optional implementation, Figure 4 As shown, it also includes a second inner cylinder 8, a second outer cylinder 9, a second inlet 10 and a second outlet 11.

[0067] The second inner cylinder 8 is vertically arranged and used for material circulation. The second outer cylinder 9 is sleeved on the outer periphery of the second inner cylinder 8 and spaced apart from the second inner cylinder 8 to form a second cooling channel 12. The second inlet 10 is provided on the second outer cylinder 9 and communicates with the second cooling channel 12. The second outlet 11 is provided on the second outer cylinder 9 and communicates with the second cooling channel 12. In this way, after cold water as a cooling medium is introduced through the second inlet 10, the cold water enters the second cooling channel 12 and circulates, and is discharged through the second outlet 11.

[0068] The bottom of the second inner cylinder 8 is connected to the top of the first inner cylinder 1 through a flange, so that the bottom of the second inner cylinder 8 is connected to the top of the first inner cylinder 1. After the top of the second inner cylinder 8 is connected to the discharge port of the graphitization furnace body, the first inner cylinder 1 is connected to the discharge port of the graphitization furnace body through the second inner cylinder 8.

[0069] In this way, cold water as a cooling medium is continuously introduced into the first inlet 4 and the second inlet 10, so that the cold water continuously flows through the first cooling channel 3 and the second cooling channel 12. The graphitized high-temperature material is discharged from the material outlet 182 of the graphitization furnace body and falls, first flowing through the second inner cylinder 8, then flowing through the first inner cylinder 1, and finally flowing out from the bottom of the first inner cylinder 1.

[0070] As the high-temperature material flows through the second inner tube 8, it exchanges heat with the cold water in the second cooling channel 12, thus providing a primary cooling effect. The high-temperature material then falls from the bottom of the second inner tube 8 and enters the first inner tube 1. As it flows through the first inner tube 1, the high-temperature material exchanges heat with the cold water in the first cooling channel 3, thus providing a secondary cooling effect. This dual-stage cooling process allows the material to be cooled to below 1500°C.

[0071] The flow rate of cooling water entering the second inlet 10 is controlled at 0.5m / s-10.5m / s. The height of the first inner tube 1 is 3m, and the height of the second inner tube 8 is 1.5m. The distance between the outer wall of the second inner tube 8 and the inner wall of the second outer tube 9 is 100mm-200mm.

[0072] The second inlet 10 is located below the second outlet 11 .

[0073] As an optional embodiment, Figure 5 As shown, the discharge cooling device further includes a third inner cylinder 13 , a third outer cylinder 14 , a third inlet 15 and a third outlet 16 .

[0074] The third inner cylinder 13 is vertically arranged and is used for material circulation. The third outer cylinder 14 is sleeved around the outer periphery of the third inner cylinder 13 and spaced apart from the third inner cylinder 13 to form a third cooling channel 17. The third inlet 15 is provided on the third outer cylinder 14 and communicates with the third cooling channel 17. The third outlet 16 is provided on the third outer cylinder 14 and communicates with the third cooling channel 17. Thus, after cold water as a cooling medium is introduced through the third inlet 15, the cold water enters the third cooling channel 17 and circulates, and is discharged through the third outlet 16.

[0075] The top of the third inner tube 13 is connected to the bottom of the first inner tube 1 through a flange, so that the top of the third inner tube 13 is communicated with the bottom of the first inner tube 1 .

[0076] In this way, cold water as a cooling medium is continuously introduced into the first inlet 4 and the third inlet 15, so that the cold water continuously flows through the first cooling channel 3 and the third cooling channel 17. The graphitized high-temperature material is discharged from the discharge port of the graphitization furnace body and falls, first flowing through the first inner cylinder 1, then flowing through the third inner cylinder 13, and finally flowing out from the bottom of the third inner cylinder 13.

[0077] As the high-temperature material flows through the first inner tube 1, it exchanges heat with the cold water in the first cooling channel 3, thus achieving a primary cooling effect. After falling from the bottom of the first inner tube 1, the high-temperature material enters the third inner tube 13. As the high-temperature material flows through the third inner tube 13, it exchanges heat with the cold water in the third cooling channel 17, thus achieving a secondary cooling effect. This dual cooling process provides a more effective cooling effect.

[0078] The inner diameter of the third inner cylinder 13 decreases from top to bottom, which gradually reduces the flow area of the material. This not only slows down the falling speed of the material, but also gradually shortens the distance between the material near the middle and the inner wall of the third inner cylinder 13, thereby enhancing the cooling effect on the material.

[0079] The third inlet 15 is located below the third outlet 16 .

[0080] The diameter of the third inner cylinder 13 is set to 1500 mm to 2000 mm. The height is set to 1500 mm to 2500 mm. The distance between the third inner cylinder 13 and the third outer cylinder 14 is 100 mm to 200 mm. The flow rate in the third cooling channel 17 is controlled to be 0.5 m / s to 1.5 m / s.

[0081] As an optional embodiment, Figure 6 As shown, the discharge cooling device further includes a material container 18, a fourth inlet 19, and a fourth outlet 20. The material container 18 is provided with a material inlet 181 and a material outlet 182. The material outlet 182 is located at the bottom of the material container 18. After the material inlet 181 of the material container 18 is connected to the first inner cylinder 1, the material flows through the first inner cylinder 1 as it falls, enters the material container 18 from the material inlet 181, and is then discharged from the material outlet 182 at the bottom.

[0082] A fourth cooling channel 21 is provided in the side wall of the material container 18. A fourth inlet 19 is provided on the fourth outer tube and communicates with the fourth cooling channel 21. A fourth outlet 20 is provided on the fourth outer tube and communicates with the fourth cooling channel 21. Thus, after cold water, serving as a cooling medium, is introduced through the fourth inlet 19, the cold water flows into the fourth cooling channel 21 and is discharged through the fourth outlet 20.

[0083] When the material is in the material container 18 , it exchanges heat with the cold water in the fourth cooling channel 21 , thereby cooling the material. The material is then discharged from the material outlet 182 of the material container 18 .

[0084] In this way, the material flows through the second inner tube 8, the first inner tube 1, the third inner tube 13 and the material container 18 in sequence during the falling process, and is cooled four times in sequence. The four-stage cooling method makes the cooling effect of high-temperature materials better.

[0085] The distance between the pipe openings of the material inlet 181 is set to 300mm-400mm.

[0086] In an optional embodiment, the discharge cooling device further includes a rotating shaft 22 and a driving device 23. A rotating hole is vertically provided on the material container 18. After the rotating shaft 22 is rotatably disposed in the rotating hole, the rotating shaft 22 can rotate vertically in the material container 18. A spiral blade 2201 is provided on the side wall of the rotating shaft 22. When the rotating shaft 22 is rotated in a direction opposite to the upward spiral direction of the spiral blade 2201, the spiral blade 2201 can transport the material upward.

[0087] The driving device 23 is connected to the material container 18 and is in transmission connection with the rotating shaft 22, so that the driving device 23 can drive the rotating shaft 22 to rotate. The driving device 23 can be a motor.

[0088] Specifically, a rotating shaft 22 is positioned within the material container 18 near the inner wall. A driving device 23 is used to continuously rotate the rotating shaft 22, thereby conveying material near the inner wall upward. At the same time, material near the center is replenished near the inner wall. This enhances the cooling effect on the material near the center, ensuring that both the inner and outer materials receive equivalent cooling, thereby avoiding a significant difference in cooling effect between the inner and outer materials.

[0089] The material outlet 182 is located near the side wall of the material container 18 and is vertically offset from the rotating shaft 22. The distance between the outermost side of the spiral blade 2201 and the inner wall of the material container 18 is set to 5mm-10mm.

[0090] In a further embodiment, Figure 6 As shown, at least two rotating shafts 22 are provided, wherein the two rotating shafts 22 are arranged opposite to each other in the material container 18 , that is, the two rotating shafts 22 are located on both sides. Each rotating shaft 22 is correspondingly connected to a driving device 23 in transmission.

[0091] Thus, each drive device 23 drives a corresponding shaft 22 to rotate. Since two shafts 22 are located on either side, the shafts 22 convey the material near the inner wall of the material container 18 on both sides upwards when rotating, while the material in the middle is replenished to the two sides and close to the inner wall of the material container 18, making the overall cooling more uniform.

[0092] Four rotating shafts 22 can be provided, and the four rotating shafts 22 are evenly arranged along the circumference of the inner wall of the material container 18. Thus, when the four rotating shafts 22 rotate, the material near the inner wall of the material container 18 is transported upward at four positions, while the material in the middle position is replenished to the positions where the four rotating shafts 22 are located and close to the inner wall of the material container 18, making the overall cooling more uniform.

[0093] In a further embodiment, Figure 7As shown, a fifth cooling channel is provided within the rotating shaft 22. Cold water, serving as a cooling medium, is continuously flowed into the fifth cooling channel. Thus, as the rotating shaft 22 rotates, the material is conveyed upward by the spiral blades 2201. During this upward conveyance, the material exchanges heat with the cold water within the fifth cooling channel within the rotating shaft 22, thereby further cooling the material.

[0094] Specifically, the rotating shaft 22 includes an outer shaft body 222 and an inner shaft body 221. The spiral blade 2201 is disposed on the outer wall of the outer shaft body 222. The outer shaft body 222 defines a receiving cavity 2221. The inner shaft body 221 defines a flow channel 2211, with both ends of the inner shaft body 221 provided with openings communicating with the flow channel 2211. The inner shaft body 221 is inserted into the outer shaft body 222, and the outer shaft body 222 is connected to the outer wall of the inner shaft body 221. The flow channel 2211 in the inner shaft body 221 is now in communication with the receiving cavity 2221, and the flow channel 2211 and the receiving cavity 2221 combine to form a fifth cooling channel. A fifth inlet 2202 is disposed on the outer wall of the outer shaft body 222, communicating with the receiving cavity 2221. A fifth outlet 2203 is provided at one end of the inner shaft 221 outside the outer shaft 222 . The fifth outlet 2203 is communicated with the flow channel 2211 .

[0095] With this arrangement, after cold water as a cooling medium is introduced into the fifth inlet 2202 , the cold water first enters the accommodating cavity 2221 , then enters the flow channel 2211 , and finally is discharged from the fifth outlet 2203 .

[0096] The inner shaft 221 is in transmission connection with the driving device 23, and the driving device 23 can drive the inner shaft 221 and the outer shaft 222 to rotate. The temperature of the cooling medium in the fifth cooling channel is set to 20°C-30°C, and the flow rate is controlled to 0.5m / s-1.5m / s.

[0097] In a combined embodiment, Figure 1 As shown, the top of the first inner cylinder 1 is connected to the bottom of the second inner cylinder 8 , the bottom of the first inner cylinder 1 is connected to the top of the third inner cylinder 13 , and the bottom of the third inner cylinder 13 is connected to the material inlet 181 of the material container 18 .

[0098] In this way, the top of the second inner cylinder 8 is connected to the feed port of the graphitization furnace body, and cold water as a cooling medium is continuously introduced into the first inlet 4, the second inlet 10, the third inlet 15, the fourth inlet 19 and the fifth inlet 2202.

[0099] After the high-temperature material falls and is discharged from the feed port of the graphitization furnace body, it first enters the second inner cylinder 8.

[0100] When the high-temperature material flows through the second inner cylinder 8, it exchanges heat with the cold water in the second cooling channel 12, thereby performing a first cooling on the high-temperature material.

[0101] The material flows through the second inner tube 8 and enters the first inner tube 1, and is transported downward along the first inner tube 1. During the falling process of the material, it exchanges heat with the cold water in the first cooling channel 3, thereby performing a second cooling on the material.

[0102] As the high-temperature material falls, the spoiler section 601 interferes with its descent. Because the width of the spoiler section 601 of the spoiler 6 gradually decreases from bottom to top, the material falling onto the spoiler section 601 is guided outward by the spoiler section 601, closer to the inner wall of the first inner tube 1. This shortens the distance between the material near the inside and the inner wall of the first inner tube 1, thereby enhancing the cooling effect on the material near the inside and reducing the difference in cooling effect between the inner and outer materials.

[0103] The material flows through the first inner tube 1 and then enters the third inner tube 13. When the high-temperature material flows through the third inner tube 13, it exchanges heat with the cold water in the third cooling channel 17, thereby performing a third cooling on the high-temperature material.

[0104] The inner diameter of the third inner cylinder 13 decreases from top to bottom, which gradually reduces the flow area of the material. This not only slows down the falling speed of the material, but also gradually shortens the distance between the material near the middle and the inner wall of the third inner cylinder 13, thereby enhancing the cooling effect on the material.

[0105] The material flows through the third inner tube 13 and enters the material container 18 . When the material is in the material container 18 , it exchanges heat with the cold water in the fourth cooling channel 21 , thereby cooling the material.

[0106] In this way, the material flows through the second inner tube 8, the first inner tube 1, the third inner tube 13 and the material container 18 in sequence during the falling process, and is cooled four times in sequence. The four-stage cooling method makes the cooling effect of high-temperature materials better.

[0107] According to another embodiment of the present application, a graphitization furnace is provided, comprising a graphitization furnace body and any of the above-described discharge cooling devices. The feed port of the graphitization furnace body is connected to the discharge cooling device. Thus, high-temperature material discharged from the feed port of the graphitization furnace body can enter the discharge cooling device for cooling. The technical effects achieved by this graphitization furnace are consistent with those of the discharge cooling device, and therefore will not be further described.

[0108] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the present application.

Claims

1. A discharging cooling device, characterized in that: include: A first inner cylinder (1) is vertically arranged and used for material circulation; A first outer cylinder (2) is arranged on the periphery of the first inner cylinder (1), and a first cooling channel (3) for circulating a cooling medium is formed between the first outer cylinder (2) and the first inner cylinder (1); a first inlet (4) provided on the first outer cylinder (2) and communicating with the first cooling channel (3); a first outlet (5) provided on the first outer cylinder (2) and communicating with the first cooling channel (3); The spoiler (6) comprises a spoiler section (601) and a connecting section (602) which are arranged in sequence from top to bottom and connected to each other. The connecting section (602) is connected to the first inner tube (1) through a connecting member (7) and is spaced apart from the inner wall of the first inner tube (1). The width of the spoiler section (601) gradually decreases from bottom to top.

2. The discharging cooling device according to claim 1, characterized in that: The first inner tube (1) comprises a necking section (101), and the inner diameter of the necking section (101) is smaller than the inner diameters of other parts of the first inner tube (1).

3. The discharging cooling device according to claim 2, characterized in that: At least two spoilers (6) are provided. In the vertical direction, one of the spoilers (6) is located on the upper side of the necking section (101), and the other spoiler (6) is located on the lower side of the necking section (101).

4. The discharging cooling device according to claim 1, characterized in that: Also includes: A second inner cylinder (8) is vertically arranged and used for material circulation, and the second inner cylinder (8) is connected to the first inner cylinder (1); a second outer cylinder (9) disposed on the periphery of the second inner cylinder (8), wherein a second cooling channel (12) for circulating a cooling medium is formed between the second outer cylinder (9) and the second inner cylinder (8); a second inlet (10) disposed on the second outer cylinder (9) and communicating with the second cooling channel (12); A second outlet (11) is provided on the second outer cylinder (9) and communicates with the second cooling channel (12).

5. The discharging cooling device according to claim 1, characterized in that: Also includes: A third inner cylinder (13) is vertically arranged and used for material circulation, wherein the inner diameter of the third inner cylinder (13) decreases from top to bottom, and the third inner cylinder (13) is connected to the first inner cylinder (1); a third outer cylinder (14) disposed on the periphery of the third inner cylinder (13), wherein a third cooling channel (17) for cooling medium to flow is formed between the third outer cylinder (14) and the third inner cylinder (13); a third inlet (15) disposed on the third outer cylinder (14) and communicating with the third cooling channel (17); A third outlet (16) is provided on the third outer cylinder (14) and communicates with the third cooling channel (17).

6. The discharge cooling device according to any one of claims 1 to 5, characterized in that: Also includes: A material container (18) is provided with a material inlet (181) and a material outlet (182), wherein the material inlet (181) is communicated with the first inner cylinder (1), and the material outlet (182) is located at the bottom of the material container (18), and a fourth cooling channel (21) is provided in the side wall of the material container (18); a fourth inlet (19), disposed on the material container (18) and communicating with the fourth cooling channel (21); A fourth outlet (20) is provided on the material container (18) and communicates with the fourth cooling channel (21).

7. The discharge cooling device according to claim 6, characterized in that: Also includes: A rotating shaft (22) is vertically and rotatably connected to the material container (18). A spiral blade (2201) is connected to the outer wall of the rotating shaft (22) to transport the material upward during rotation. The material outlet (182) and the rotating shaft (22) are staggered in the vertical direction. A driving device (23) is connected to the material container (18) and is in driving connection with the rotating shaft (22). The driving device (23) is suitable for driving the rotating shaft (22) to rotate.

8. The discharge cooling device according to claim 7, characterized in that: At least two rotating shafts (22) are provided, wherein the two rotating shafts (22) are arranged opposite to each other.

9. The discharge cooling device according to claim 7, characterized in that: A fifth cooling channel suitable for the circulation of cooling medium is provided inside the rotating shaft (22).

10. A graphitization furnace, characterized in that: It comprises a graphitization furnace main body and the discharge cooling device according to any one of claims 1 to 9.

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