Cooling device and graphitization furnace

Abstract

The utility model relates to a cooling device and a graphitization furnace. The cooling device is used for cooling materials in a furnace body of the graphitization furnace and comprises a cooling main body and a cooling piece, a feeding channel is arranged in the cooling main body, the feeding channel is used for being communicated with the interior of the furnace body, a first cooling channel is arranged in the wall body of the cooling main body, and the first cooling channel is annularly arranged on the periphery of the feeding channel; the cooling piece is arranged on the cooling body, and at least part of the cooling piece penetrates through the feeding channel. The wall body of the cooling device is arranged on the periphery of the feeding channel, and the cooling piece is arranged in the feeding channel so as to cool materials located at different positions in the feeding channel, so that the cooling effect of the cooling device is improved, and the materials can be uniformly cooled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling devices, in particular to a cooling device and a graphitization furnace. BACKGROUND

[0002] For high-temperature reaction devices, the generated material after the reaction is often at a high temperature, which is not conducive to subsequent processing of the material. For example, when using a graphitization furnace to generate graphite material, the graphite material obtained in the reaction chamber is at a high temperature, which is easy to cause secondary reaction with external air and affect the quality of the graphite material.

[0003] Therefore, it is necessary to cool the material obtained in the reaction chamber after the reaction. However, the current cooling device has poor cooling effect on the material, and there is a large temperature difference between the materials at different positions, which causes uneven cooling of the material. SUMMARY

[0004] In view of the above problems, the present application provides a cooling device and a graphitization furnace, which can alleviate the problem of poor cooling effect of the material obtained after the reaction in the reaction chamber.

[0005] In a first aspect, the present application provides a cooling device for cooling the material in the furnace body of a graphitization furnace, which comprises a cooling main body and a cooling member. The cooling main body is internally provided with a feeding channel for communicating with the inside of the furnace body, and the wall body of the cooling main body is internally provided with a first cooling channel arranged around the outer periphery of the feeding channel. The cooling member is arranged on the cooling main body, and at least part of the cooling member penetrates the feeding channel.

[0006] In the technical scheme of the present application, after starting the cooling device, cooling medium is respectively introduced into the first cooling channel in the wall body and the cooling member. The above-mentioned material is cooled after entering the feeding channel, wherein the material can be roughly divided into a first part and a second part, the first part is arranged close to the wall body, and the second part is arranged away from the wall body. Because the cooling member is located inside the feeding channel, the cooling member mainly cools the second part. The wall body mainly cools the first part. Because the farther away from the wall body or the cooling member, the poorer the cooling effect of the wall body and the cooling member, the wall body is arranged at the periphery of the feeding channel, and the cooling member is arranged inside the feeding channel, so as to cool the material at different positions in the feeding channel, thereby improving the cooling effect of the cooling device and uniformly cooling the material.

[0007] In some embodiments, the cooling main body is arranged in extension along a first direction and comprises a first segment and a second segment connected with each other, the end of the first segment away from the second segment is connected with the furnace body, the first segment is provided with the cooling member, and the feeding channel corresponding to the second segment has a cross-sectional area perpendicular to the first direction, which gradually decreases from the direction away from the first segment.

[0008] Because the caliber of the feeding passage of the second section is smaller than that of the first section, the flow rate of the material is slowed down when flowing to the second section, and when a large amount of material is accumulated in the second section and flows slowly, the flow rate of the material in the first section is also slowed down. In this way, the residence time of the material in the first section and the second section is prolonged. The cooling member and the wall body can continuously cool the material in the first section and the second section, prolong the cooling time, and improve the cooling capacity of the cooling device.

[0009] In some embodiments, along the first direction, the first section is spaced apart by a plurality of cooling members, the extension direction of the cooling members intersects the first direction, and the cooling members are connected with the wall body of the cooling body.

[0010] In this way, by designing the number and position of the cooling members, the cooling effect of the cooling members is improved.

[0011] In some embodiments, along the first direction, all the cooling members are divided into a plurality of cooling groups, and each cooling group includes a plurality of cooling members that are spaced apart and parallel.

[0012] In this way, by arranging a plurality of cooling groups in the first direction, the material at different positions in the feeding passage can be cooled, so that the cooling effect of different materials is as consistent as possible, the cooling uniformity is improved, and the material discharge is not affected.

[0013] In some embodiments, the extension directions of the cooling members corresponding to some cooling groups intersect.

[0014] By setting the extension directions of the cooling members corresponding to some cooling groups to intersect, the material can be cooled by at least some cooling members, the cooling effect of the cooling device is improved, the cooling effect of all the material is as consistent as possible, and the probability of some material being unqualified due to poor cooling effect is reduced.

[0015] In some embodiments, the cooling members corresponding to some cooling groups are distributed staggered in the first direction.

[0016] In this way, by setting the cooling members corresponding to some cooling groups to be distributed staggered in the first direction, the corresponding cooling groups can cool different materials, so that the degree of cooling of all the material is close, and the cooling effect of the cooling device is improved.

[0017] In some embodiments, the cooling member is configured in a tubular structure, the tubular structure is provided with a second cooling passage, the second cooling passage includes oppositely arranged inlet and outlet ends, and the inlet and outlet ends penetrate the wall body of the cooling body.

[0018] In this way, by designing the inlet and outlet ends to protrude from the wall body, the conveying pipeline of the cooling medium conveying device and the inlet and outlet ends are connected, and the installation difficulty is reduced.

[0019] In some embodiments, the inner diameter of the cooling member is r1, the outer diameter of the cooling member is r2, and the ratio of r1 and r2 ranges from 1:5 to 1:15.

[0020] By limiting the ratio of the inner diameter and the outer diameter of the cooling member, the wall thickness of the cooling member is limited, the probability of damage to the cooling member is reduced without affecting the heat exchange effect of the cooling member, and the service life of the cooling member is prolonged.

[0021] In some embodiments, the inner diameter of the cross section of the cooling body in the first direction is R1, the outer diameter of the cross section of the cooling body in the first direction is R2, and the ratio of R1 and R2 ranges from 1:1 to 1:1.8.

[0022] By limiting the ratio of the inner diameter and the outer diameter of the cross section of the cooling body, the wall thickness of the cooling body is limited, the probability of damage to the cooling member is reduced without affecting the heat exchange effect of the wall of the cooling body, and the service life of the cooling member is prolonged.

[0023] In some embodiments, the first cooling channel extends in the first direction, and the cooling body further comprises a flow guide, which is arranged in the first cooling channel and extends in the first direction in a spiral shape.

[0024] In this way, after the cooling medium enters the first cooling channel, it can smoothly flow from the cooling medium inlet to the cooling medium outlet under the action of the flow guide, thereby accelerating the flow speed of the cooling medium in the first cooling channel.

[0025] In some embodiments, the inner wall surface of the cooling body is provided with a wear-resistant coating.

[0026] In this way, the wear resistance of the inner wall surface of the cooling body is prolonged, thereby prolonging the service life of the cooling body.

[0027] In a second aspect, the application provides a graphitization furnace comprising the cooling device in the above embodiments.

[0028] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not considered limiting of the application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views. In the drawings:

[0030] Figure 1 is a structural schematic view of a graphitization furnace according to one or more embodiments.

[0031] Figure 2 is a structural schematic view of a cooling device according to one or more embodiments. Figure 1 is a sectional view of the cooling device shown at A in the middle.

[0032] Figure 3 is a sectional view of a cooling device according to one or more embodiments.

[0033] Reference signs in the detailed description of the embodiments are as follows:

[0034] 1000, graphitization furnace; 100, cooling device; 200, furnace body;

[0035] 10, cooling body; 11, feeding passage; 12, wall body; 13, first cooling passage; 14, first section; 15, second section; 16, flow guide; 20, cooling member; 21, inlet end; 22, outlet end; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of the present application, if the technical terms "first", "second", etc. appear, they are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0039] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In the description of the embodiments of the present application, if the term "and / or" appears, it only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, if the character " / " appears in this paper, it generally represents that the front and rear associated objects are in an "or" relationship.

[0041] In the description of the embodiments of the present application, if the term "multiple" appears, it refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0042] In the description of the embodiments of the present application, if the technical terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, if the technical terms "mounting", "connection", "connection", "fixing" and the like appear, they should be understood in a broad sense, for example, they can be fixedly connected, or they can be detachably connected, or they can be integrated; they can be mechanically connected, or they can be electrically connected; they can be directly connected, or they can be indirectly connected through an intermediate medium; they can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] The carbon atoms of the carbonaceous material are arranged irregularly, and only by high-temperature heat treatment can the carbon atoms recrystallize and re-order to exhibit the crystal structure of graphite, thereby having the excellent properties of graphite, such as electrical conductivity, thermal conductivity, and chemical and thermal stability. Therefore, it is necessary to convert the carbonaceous material into artificial graphite material by a graphitization furnace, so as to apply the graphite material to the production and preparation of battery negative materials.

[0045] The graphite material formed after the reaction has a high temperature, and if it is directly taken out from the reaction chamber, on the one hand, it is not convenient to operate, and on the other hand, the high-temperature graphite material is easy to have a secondary reaction when it contacts the external air, which affects the quality of the graphite material. Therefore, it is necessary to cool the graphite material after the reaction is completed.

[0046] However, the currently provided cooling device generally uses water cooling to cool the graphite material. The graphite material is passed into the cooling channel inside the cooling device, and the cooling liquid is passed into the channel wall of the cooling channel, so as to cool the graphite material in the cooling channel. Thus, the cooling effect of the part of the graphite material directly contacting the channel wall of the cooling channel is good, and the part of the graphite material which cannot directly contact the channel wall of the cooling channel cannot be well cooled, and thus has a higher temperature, so that the temperature of the graphite material is uneven.

[0047] In addition, when the water cooling is used for cooling, the channel wall of the cooling channel has a large temperature difference, so that the channel wall of the cooling channel is easy to crack under the action of internal stress, resulting in leakage of the cooling liquid. If the cooling liquid contacts the high-temperature graphite material, a combustible and toxic gas such as carbon monoxide will be generated, causing a safety accident.

[0048] In order to improve the cooling effect of the material obtained after the reaction in the reaction chamber, some embodiments of the present application provide a cooling device, which comprises a cooling body and a cooling piece. The cooling body is provided with a feeding channel communicated with the reaction chamber. The wall body of the cooling body is provided with a first cooling channel. The feeding channel is provided with the cooling piece. The wall body and the cooling piece can jointly cool the materials at different positions in the feeding channel, improve the cooling effect of the cooling device, and uniformly cool the materials.

[0049] The cooling device disclosed in one or more embodiments of the present application can be used to cool the graphite material reacted in the furnace body of the graphitization furnace, and the above-mentioned cooling device can also be used to cool the high-temperature material generated by other high-temperature reaction devices, which will not be described here.

[0050] One or more embodiments of the present application provide a graphitization furnace comprising a cooling device. The graphitization furnace refers to a device for high-temperature sintering of carbonaceous materials, so that carbon atoms are recrystallized and reordered, thereby being converted into artificial graphite materials.

[0051] As shown in FIG. 1, Figure 1 Some embodiments of the present application provide a cooling device 100 for cooling the material in the furnace body 200 of the graphitization furnace 1000. The cooling device 100 comprises a cooling body 10 and a cooling piece 20. The cooling body 10 is internally provided with a feeding channel 11 for communicating with the inside of the furnace body 200. The wall body 12 of the cooling body 10 is internally provided with a first cooling channel 13, and the first cooling channel 13 is annularly arranged on the outer periphery of the feeding channel 11. The cooling piece 20 is arranged on the cooling body 10, and at least part of the cooling piece 20 penetrates the feeding channel 11.

[0052] The structure of the cooling body 10 can be but is not limited to a cylindrical structure, and the cooling member 20 can be detachably installed on the cooling body 10 by means of insertion or the like, wherein part of the cooling member 20 can be located in the feeding channel 11 to cool the material away from the wall body 12. Both the first cooling channel 13 of the cooling body 10 and the cooling member 20 can be supplied with liquid cooling medium or gaseous cooling medium such as water, oil, air, inert gas, etc. to cool the material flowing through the feeding channel 11.

[0053] Taking the graphitization furnace 1000 as a vertical graphitization furnace 1000 for example, the furnace body 200 includes a reaction chamber extending along the first direction X and having a feeding end and a discharging end. The cooling device 100 is arranged at the discharging end, and when the material completes the reaction in the reaction chamber, it can exit the reaction chamber through the discharging end and enter the cooling device 100.

[0054] After the cooling device 100 is started, the cooling medium is supplied into the first cooling channel 13 in the wall body 12 and the cooling member 20. The above-mentioned material is cooled after entering the feeding channel 11, wherein the material can be roughly divided into a first part and a second part, the first part is arranged close to the wall body 12, and the second part is arranged away from the wall body 12. Because the cooling member 20 is located inside the feeding channel 11, the cooling member 20 mainly cools the second part. The wall body 12 mainly cools the first part.

[0055] Because the farther away from the wall body 12 or the cooling member 20, the worse the cooling effect of the wall body 12 and the cooling member 20, the wall body 12 is arranged at the periphery of the feeding channel 11, and the cooling member 20 is arranged inside the feeding channel 11 to cool the material at different positions in the feeding channel 11, thereby improving the cooling effect of the cooling device 100 and uniformly cooling the material.

[0056] Because the cooling effects of the wall body 12 and the cooling member 20 are different, the pressures of the cooling medium supplied into the first cooling channel 13 in the wall body 12 and the cooling member 20 are also different. The pressure of the cooling medium supplied into the first cooling channel 13 ranges from 0.2 MPa to 1.5 MPa, and the specific values of the pressure can be 0.2 MPa, 0.2 MPa, 0.6 MPa, 0.8 MPa, 1.5 MPa, and any value between any two adjacent values. The pressure is generally set to be between 0.4 MPa and 0.55 MPa in the embodiments of the present application.

[0057] The pressure of the cooling medium supplied into the cooling member 20 ranges from 0.1 MPa to 1 MPa, and the specific values of the pressure can be 0.1 MPa, 0.2 MPa, 0.6 MPa, 0.8 MPa, 1 MPa, and any value between any two adjacent values. The pressure is generally set to be between 0.3 MPa and 0.4 MPa in the embodiments of the present application.

[0058] In some embodiments, the cooling body 10 is arranged to extend along a first direction X and comprises a first section 14 and a second section 15 connected to each other, the first section 14 is connected to the furnace body 200 at an end thereof away from the second section 15, the first section 14 is provided with the cooling member 20, and the second section 15 corresponds to the feeding passage 11 and has a cross-sectional area perpendicular to the first direction X, which gradually decreases from the direction away from the first section 14.

[0059] The first cooling passage 13 can be arranged in the wall body 12 of the first section 14 and the wall body 12 of the second section 15, or only in the wall body 12 of the first section 14.

[0060] After the material in the reaction chamber enters the feeding passage 11, it flows through the first section 14 and the second section 15 in turn. Because the diameter of the feeding passage 11 of the second section 15 is smaller than that of the feeding passage 11 of the first section 14, the flow rate of the material decreases when it flows to the second section 15, and when a large amount of material accumulates in the second section 15 and flows slowly, the flow rate of the material in the first section 14 also decreases at this time. In this way, the residence time of the material in the first section 14 and the second section 15 is prolonged. The cooling member 20 and the wall body 12 can continuously cool the material in the first section 14 and the second section 15, prolong the cooling time, and improve the cooling capacity of the cooling device 100.

[0061] In some embodiments, a plurality of cooling members 20 are arranged in the first section 14 along the first direction X, the extension direction of the cooling member 20 intersects the first direction X, and the cooling member 20 is connected to the wall body 12 of the cooling body 10.

[0062] In other words, a plurality of cooling members 20 are arranged in the extension direction of the feeding passage 11 to continuously cool the material. The cooling member 20 can be arranged to extend along a second direction Y to pass through the cross section of the feeding passage 11, and the second direction Y can be perpendicular to the wall body 12. The connection between the cooling member 20 and the wall body 12 can be, but is not limited to, clamping, threaded connection.

[0063] When the material flows in the feeding passage 11, as the flow time of the same material increases, the material can flow through different cooling members 20 and be cooled in turn. Because the cooling member 20 is arranged in the feeding passage 11 along the second direction Y, different parts of the cooling member 20 can cool different materials, increase the contact area between the cooling member 20 and the material, and improve the cooling effect of the cooling member 20.

[0064] The above arrangement improves the cooling effect of the cooling member 20 by designing the number and position of the cooling member 20.

[0065] In some embodiments, along the first direction X, all the cooling members 20 are divided into a plurality of cooling groups, each cooling group comprising a plurality of cooling members 20 which are spaced apart and parallel to each other.

[0066] It can be understood that, on the same cross section of the feeding channel 11, one cooling group is provided, and the cooling group comprises a plurality of cooling members 20 which are spaced apart from each other and form a channel for the material to pass through. By providing a plurality of cooling groups along the first direction X, the material at different positions in the feeding channel 11 can be cooled, so that the cooling effect of different materials is as consistent as possible, the cooling uniformity is improved, and the material unloading is not affected.

[0067] As shown in Figure 2 , in some embodiments, the extension directions of the cooling members 20 corresponding to part of the cooling groups intersect.

[0068] For example, a first cooling group and a second cooling group are distributed along the first direction X, the cooling members 20 of the first cooling group are arranged along a second direction Y and are perpendicular to the wall 12. The cooling members 20 of the second cooling group can be arranged along a third direction and are perpendicular to the wall 12. The second direction Y and the third direction intersect.

[0069] Suppose the material passes through the first cooling group and the second cooling group in turn, during the cooling process of the material. Some materials are not cooled by the first cooling group when passing through the first cooling group, but can be cooled by the second cooling group when passing through the second cooling group.

[0070] It can be understood that the third cooling group, the fourth cooling group and more cooling groups can also be provided in the feeding channel 11, and the extension directions of the cooling members 20 of adjacent two cooling groups can be the same or intersect, which will not be described here.

[0071] In summary, by setting the extension directions of the cooling members 20 corresponding to part of the cooling groups to intersect, the material can be cooled by at least some cooling members 20, the cooling effect of the cooling device 100 is improved, the cooling effect of all the materials is as consistent as possible, and the probability of some materials being unqualified due to poor cooling effect is reduced.

[0072] As shown in Figure 2 , in some embodiments, the cooling members 20 corresponding to part of the cooling groups are staggered in the first direction X.

[0073] In some examples, as shown in Figure 2As shown, the cooling members 20 corresponding to two adjacent cooling groups are staggered in the first direction X. For example, the cooling device 100 includes two cooling groups. The first cooling group and the second cooling group are arranged adjacent to each other in the first direction X, and the second cooling group is located below the first cooling group. Assuming that the first cooling group includes two cooling members 20 arranged in parallel and at intervals, the second cooling group also includes two cooling members 20 arranged in parallel and at intervals.

[0074] For ease of distinction, the cooling members 20 in the first cooling group are named as the first cooling member 20 and the second cooling member 20, and the cooling members 20 in the second cooling group are named as the third cooling member 20 and the fourth cooling member 20. A discharging channel is formed between the first cooling member 20 and the second cooling member 20, and the third cooling member 20 is arranged opposite to the discharging channel in the first direction X. The material passing through the discharging channel between the first cooling member 20 and the second cooling member 20 can directly fall on the third cooling member 20.

[0075] Similarly, a discharging channel is also formed between the third cooling member 20 and the fourth cooling member 20, and the discharging channel is arranged opposite to the first cooling member 20 or the second cooling member 20.

[0076] In this way, the cooling members 20 corresponding to some cooling groups are arranged staggered in the first direction X, so that the corresponding cooling groups can cool different materials, so that the cooling degree of all materials is close, and the cooling effect of the cooling device 100 is improved.

[0077] Of course, in other examples, as shown in FIG. 2, the cooling members 20 corresponding to some adjacent cooling groups are not staggered in the first direction X. The working principle of the cooling member 20 will not be described here. Figure 3

[0078] In some embodiments, the cooling member 20 is configured as a tubular structure, and the tubular structure is internally provided with a second cooling channel including oppositely arranged inlet end 21 and outlet end 22, and the inlet end 21 and the outlet end 22 pass through the wall 12 of the cooling body 10.

[0079] The inlet ends 21 of all the cooling members 20 can be arranged on the same side, and the outlet ends 22 of all the cooling members 20 can also be arranged on the same side, and the same cooling medium conveying device is used to convey and recover the cooling medium for all the cooling members 20.

[0080] As for the design of the inlet end 21 and the outlet end 22 as protruding from the wall 12, it is convenient to connect the conveying pipeline of the cooling medium conveying device with the inlet end 21 and the outlet end 22, and the installation difficulty is reduced.

[0081] ​Specifically, in some embodiments, the inner diameter of the cooling member 20 is r1, the outer diameter of the cooling member 20 is r2, and the ratio of r1 and r2 ranges from 1:5 to 1:15. The specific value of the ratio range can be 1:5, 1:6, 1:8, 1:12, 1:15, and any value between adjacent two values. The ratio range is generally set to 1:7 to 1:10 in the embodiments of the present application.

[0082] By limiting the ratio range of the inner diameter and the outer diameter of the cooling member 20, the wall thickness of the cooling member 20 is limited, which can reduce the probability of damage to the cooling member 20 without affecting the heat exchange effect of the cooling member 20, thereby prolonging the service life of the cooling member 20.

[0083] In some embodiments, along the first direction X, the inner diameter of the cross section of the cooling body 10 is R1, the outer diameter of the cross section of the cooling body 10 is R2, and the ratio of R1 and R2 ranges from 1:1 to 1:1.8. The specific value of the ratio range can be 1:1.1, 1:1.3, 1:1.4, 1:5, 1:1.8, and any value between adjacent two values. The ratio range is generally set to 1:1.25 to 1:4.2 in the embodiments of the present application.

[0084] By limiting the ratio range of the inner diameter and the outer diameter of the cross section of the cooling body 10, the wall thickness of the cooling body 10 is limited, which can reduce the probability of damage to the cooling member 20 without affecting the heat exchange effect of the wall body 12 of the cooling body 10, thereby prolonging the service life of the cooling member 20.

[0085] In some embodiments, the first cooling channel 13 extends along the first direction X, and the cooling body 10 further comprises a flow guide 16 arranged in the first cooling channel 13, the flow guide 16 being in a spiral shape and extending along the first direction X.

[0086] The first cooling channel 13 has a cooling medium inlet and outlet, and the cooling medium can smoothly flow from the cooling medium inlet to the cooling medium outlet under the action of the flow guide 16 after entering the first cooling channel 13, thereby accelerating the flow speed of the cooling medium in the first cooling channel 13.

[0087] In some embodiments, the inner wall surface of the cooling body 10 is provided with a wear-resistant coating.

[0088] In this way, the wear resistance of the inner wall surface of the cooling body 10 is prolonged, thereby prolonging the service life of the cooling body 10.

[0089] In addition, the present application also provides a graphitization furnace 1000 comprising the cooling device 100 in the above-mentioned embodiments. Therefore, the graphitization furnace 1000 has all the beneficial effects of the cooling device 100.

[0090] Specifically, in one embodiment, the cooling device 100 comprises a cooling body 10 and a cooling member 20, the cooling body 10 is arranged in the cooling member 20, and the cooling member 20 is arranged in the cooling body 10.Figure 1 and Figure 2 As shown in the figure, the cooling device 100 comprises a cooling body 10 and cooling pieces 20. The cooling body 10 is internally provided with a feeding channel 11, which is in communication with the interior of the furnace body 200. The wall body 12 of the cooling body 10 is internally provided with a first cooling channel 13, which is in the same extension direction as the feeding channel 11. The cooling pieces 20 are multiple in number and arranged on the cooling body 10. In the first direction X, all the cooling pieces 20 are divided into multiple cooling groups, each cooling group is spaced apart along the first direction X, and each cooling group comprises multiple cooling pieces 20 which are spaced apart and parallelly arranged.

[0091] After the cooling device 100 is started, cooling medium is respectively introduced into the first cooling channel 13 in the wall body 12 and the cooling pieces 20. The above-mentioned material is cooled after entering the feeding channel 11. The material can be roughly divided into a first part and a second part, the first part is arranged close to the wall body 12, and the second part is arranged away from the wall body 12. Because the cooling pieces 20 are located inside the feeding channel 11, the cooling pieces 20 mainly cool the second part. The wall body 12 mainly cools the first part.

[0092] When the material passes through the cooling pieces 20, the material can pass between the adjacent two cooling pieces 20 because the adjacent two cooling pieces 20 are spaced apart. In this way, the material can be cooled in multiple directions.

[0093] In summary, because the farther away from the wall body 12 or the cooling pieces 20, the worse the cooling effect of the wall body 12 and the cooling pieces 20, the wall body 12 is arranged at the periphery of the feeding channel 11, and the cooling pieces 20 are arranged inside the feeding channel 11, so as to cool the material at different positions in the feeding channel 11, thereby improving the cooling effect of the cooling device 100 and uniformly cooling the material.

[0094] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0095] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A cooling device for cooling material in a furnace body of a graphitization furnace, characterized by comprising: The cooling device comprises: a cooling body, which is internally provided with a feeding channel for communicating with the interior of the furnace body, and is internally provided with a first cooling channel around the outer periphery of the feeding channel; a cooling member, which is arranged on the cooling body and at least partially penetrates the feeding channel.

2. Cooling device according to claim 1, characterized in that The cooling body extends along a first direction and comprises a first section and a second section connected with each other, the end of the first section away from the second section is connected with the furnace body, the first section is provided with the cooling member, and the feeding channel corresponding to the second section has a cross-sectional area perpendicular to the first direction, which gradually decreases from the direction away from the first section.

3. Cooling device according to claim 2, characterized in that Along the first direction, the first section is spaced apart from a plurality of cooling members, the extension direction of the cooling member intersects the first direction and is connected with the wall of the cooling body.

4. Cooling device according to claim 3, characterized in that Along the first direction, all the cooling members are divided into a plurality of cooling groups, each cooling group comprises a plurality of cooling members spaced apart and parallelly arranged.

5. Cooling device according to claim 4, characterized in that The extension direction of the cooling member corresponding to part of the cooling groups intersects.

6. Cooling device according to claim 4, characterized in that The cooling members corresponding to part of the cooling groups are distributed staggered in the first direction.

7. Cooling device according to any of claims 1 to 6, characterized in that The cooling member is configured as a tubular structure, the tubular structure is internally provided with a second cooling channel, the second cooling channel comprises oppositely arranged inlet end and outlet end, the inlet end and the outlet end penetrate the wall of the cooling body.

8. Cooling device according to claim 7, characterized in that The inner diameter of the cooling member is r1, the outer diameter of the cooling member is r2, and the ratio of r1 and r2 ranges from 1:5 to 1:

15.

9. Cooling device according to any of claims 2 to 6, characterized in that Along the first direction, the inner diameter of the cross section of the cooling body is R1, and the outer diameter of the cross section of the cooling body is R2, and the ratio of R1 and R2 ranges from 1:1 to 1:1.

8.

10. Cooling device according to any of claims 2 to 6, characterized in that The first cooling channel extends along the first direction, and the cooling body further comprises a flow guide member arranged in the first cooling channel, the flow guide member is helical and extends along the first direction.

11. Cooling device according to any of claims 1 to 6, characterized in that The inner wall surface of the cooling body is provided with a wear-resistant coating.

12. A graphitization furnace characterized by, The cooling device comprises: a cooling body, which is internally provided with a feeding channel for communicating with the interior of the furnace body, and is internally provided with a first cooling channel around the outer periphery of the feeding channel; a cooling member, which is arranged on the cooling body and at least partially penetrates the feeding channel.

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