Cooling device and graphitization furnace

Abstract

The application relates to a cooling device and a graphitization furnace, the cooling device comprising: an outer cooling part which is formed with a feeding channel and an outer cooling channel, two ends of the feeding channel are respectively provided with a feeding port and a discharging port, the outer cooling channel is arranged at the outer circumferential side of the feeding channel, the feeding channel is used for conveying materials, and the outer cooling channel is used for circulating a first cooling medium; and an inner cooling part which is arranged in the feeding channel, the inner cooling part is formed with an inner cooling channel, the extension track of the inner cooling channel at least partially coincides with the extension track of the feeding channel, and the inner cooling channel is used for circulating a second cooling medium. The cooling device can not only accelerate the cooling rate of the materials, but also more uniformly cool the materials, so that the cooling efficiency of the materials is improved, and the quality of the materials discharged from the discharging port meets the use requirement.

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 reaction is usually 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 furnace body is at a high temperature, which is easy to react with external air and affect the quality of the graphite material.

[0003] Therefore, it is necessary to cool the material obtained in the furnace body after reaction. In related technologies, the cooling effect of the cooling device on the material is poor, resulting in the quality of the output material not meeting the use requirements. CONTENT OF THE INVENTION

[0004] The present application aims to solve the problem of poor cooling effect of the material obtained by high-temperature reaction, resulting in the quality of the output material not meeting the use requirements. To this end, the present application provides a cooling device and a graphitization furnace.

[0005] In a first aspect, the present application provides a cooling device, which comprises

[0006] An outer cooling member is formed with a feeding channel and an outer cooling channel, the feeding channel is respectively provided with an inlet and an outlet at both ends, the outer cooling channel is arranged on the outer circumferential side of the feeding channel, the feeding channel is used for conveying the material, and the outer cooling channel is used for circulating the first cooling medium.

[0007] An inner cooling member is arranged in the feeding channel, the inner cooling member is formed with an inner cooling channel, the extension track of the inner cooling channel at least partially coincides with the extension track of the feeding channel, and the inner cooling channel is used for circulating the second cooling medium.

[0008] According to the cooling device of the first aspect of the present application, at least the following beneficial effects are achieved:

[0009] The cooling device of the present application, through the cooperation of the outer cooling member and the inner cooling member, the material enters the feeding channel from the feeding port and is conveyed along the feeding channel, the first cooling medium flowing in the outer cooling channel exchanges heat with the outer circumferential side of the material through the channel wall of the outer cooling channel and the channel wall of the feeding channel, and the second cooling medium flowing in the inner cooling channel exchanges heat with the inner circumferential side of the material through the channel wall of the inner cooling channel. The nested cooperation of the outer cooling channel and the inner cooling channel does not need to lengthen the length of the cooling channel, realizes the double cooling of the material by the outer cooling channel and the inner cooling channel, thereby synchronously cooling the inner and outer sides of the material, which not only can accelerate the cooling rate of the material, but also can more uniformly cool the material, thereby improving the cooling efficiency of the material, so that the quality of the material sent out from the discharge port meets the use requirements.

[0010] In some embodiments, the length of the feeding channel is equal to the length of the inner cooling channel, and the inner diameter of the feeding channel is greater than the inner diameter of the inner cooling channel.

[0011] In this way, the material can flow in the space between the feeding channel and the inner cooling channel to the direction of the discharge port, while increasing the contact area of the material and the wall surface of the inner cooling channel, so that the material exchanges heat with the second cooling medium flowing in the inner cooling channel before flowing out of the discharge port, prolongs the heat exchange time between the second cooling medium and the material, and further improves the cooling effect of the material. At the same time, the temperature of the cooled material is relatively uniform, further improving the output quality of the material, so that the material can better meet the use requirements.

[0012] In some embodiments, the outer cooling channel is configured as an annular channel surrounding the outer circumferential side of the feeding channel.

[0013] In this way, the outer circumferential side of the material can exchange heat with the first cooling medium flowing in the outer cooling channel during the conveying of the material along the outer cooling channel to the discharge port, prolonging the heat exchange time between the first cooling medium and the material, and further improving the cooling effect of the material. At the same time, the temperature of the cooled material is relatively uniform, further improving the output quality of the material, so that the material can better meet the use requirements.

[0014] In some embodiments, the cooling device further comprises a first cooling supply pipe, the first cooling supply pipe is arranged in the inner cooling channel and communicates with the inner cooling channel, and the first cooling supply pipe is used for introducing the second cooling medium into the inner cooling channel and discharging the heat-exchanged second cooling medium.

[0015] In this way, the second cooling medium is circulated in the inner cooling channel through the first cooling pipe, and the second cooling medium fills the inner cooling channel quickly and exchanges heat with the material in the feeding channel, so that the material is cooled.

[0016] In some embodiments, the first cooling pipe is provided with a first liquid inlet channel and a first liquid outlet channel, and the first liquid inlet channel and the first liquid outlet channel are in communication with the inner cooling channel.

[0017] In this way, the first liquid inlet channel, the inner cooling channel and the first liquid outlet channel form a circulation flow path for the second cooling medium, so that the second cooling medium circulates in the inner cooling channel, further accelerating the cooling rate of the material and improving the cooling effect of the material.

[0018] In some embodiments, the ratio between the length of the first cooling pipe and the length of the inner cooling channel is 0.6:1 to 0.9:1.

[0019] In this way, the inner cooling channel can be filled with the second cooling medium in a short time, and the second cooling medium after heat exchange can be discharged in a short time, so as to improve the cooling efficiency of the material.

[0020] In some embodiments, the wall surface of the feeding channel in contact with the material is configured as a stainless steel structural member; and / or the wall surface of the inner cooling channel in contact with the material is configured as a stainless steel structural member.

[0021] In this way, the weak magnetism and good mechanical characteristics of the stainless steel structural member are utilized, so that the material moving in the feeding channel does not generate magnetic particles due to contact and friction with the inner wall of the feeding channel, and the production quality of the material is improved. Similarly, the material moving in the feeding channel does not generate magnetic particles due to contact and friction with the outer wall of the inner cooling channel, and the production quality of the material is improved.

[0022] In some embodiments, the wall surface of the outer cooling channel is configured as a carbon steel structural member.

[0023] In this way, the good mechanical structural strength of the carbon steel strengthens the structural strength of the outer cooling member as a whole, and also protects the structure of the feeding channel.

[0024] In some embodiments, the wall surface of the feeding channel in contact with the material is provided with a first temperature-resistant layer.

[0025] In this way, the material with high temperature is not in direct contact with the wall of the feeding channel, the probability of structural damage of the feeding channel due to high wall temperature is reduced, and the friction loss of the material to the inner wall of the feeding channel is reduced, and the structural life of the feeding channel is improved.

[0026] In some embodiments, the ratio between the thickness of the first temperature-resistant layer and the thickness of the wall of the feeding channel is greater than 0 and less than 0.001.

[0027] In this way, the thickness of the first temperature-resistant layer is controlled within a suitable range, the influence of the cooling of the material is reduced, and the first temperature-resistant layer effectively protects the structure of the feeding channel.

[0028] In some embodiments, the thermal conductivity of the first temperature-resistant layer is greater than the thermal conductivity of the wall of the feeding channel.

[0029] In this way, the heat of the material in the feeding channel can be quickly conducted to the second cooling medium through the first temperature-resistant layer, the wall of the feeding channel, and the wall of the outer cooling channel, thereby improving the cooling efficiency of the material.

[0030] In some embodiments, the wall of the inner cooling channel in contact with the material is provided with a second temperature-resistant layer.

[0031] In this way, the material with high temperature is not in direct contact with the wall of the inner cooling channel, the probability of structural damage of the inner cooling channel due to high wall temperature is reduced, and the friction loss of the material to the outer wall of the inner cooling channel is reduced, and the structural life of the inner cooling channel is improved.

[0032] In some embodiments, the ratio between the thickness of the second temperature-resistant layer and the thickness of the wall of the inner cooling channel is greater than 0 and less than 0.001.

[0033] In this way, the thickness of the second temperature-resistant layer is controlled within a suitable range, the influence of the cooling of the material is reduced, and the second temperature-resistant layer effectively protects the structure of the inner cooling channel.

[0034] In some embodiments, the thermal conductivity of the second temperature-resistant layer is greater than the thermal conductivity of the wall of the inner cooling channel.

[0035] In this way, the heat of the material in the feeding channel can be quickly conducted to the first cooling medium through the second temperature-resistant layer and the inner cooling channel, thereby improving the cooling efficiency of the material.

[0036] In some embodiments, the feeding channel is further provided with a gas inlet, and the gas inlet is used to input a protective gas into the feeding channel.

[0037] In this way, the protective gas fills the gap in the feeding channel and dynamically seals the discharge port, thereby reducing the probability of air oxidation of the material during movement and conveying in the feeding channel, and further improving the production quality of the material.

[0038] In some embodiments, the inner cooling member is rotatably arranged in the feeding channel about an axis thereof, and a plurality of spiral blades are arranged on the wall of the inner cooling channel in contact with the material, and all the spiral blades are distributed at intervals along the extension track of the inner cooling channel.

[0039] In this way, after the material enters the feeding channel from the feeding port, the first driving member drives the inner cooling member to rotate, so that the inner cooling member drives all the spiral blades thereon to rotate about the axis of the inner cooling member, and the material is pushed along the fixed feeding channel by the rotating spiral blades and is conveyed to the discharge port, so that the cooled material can be quickly discharged from the discharge port, thereby improving the discharge rate of the material.

[0040] In some embodiments, the cooling device further comprises a material blocking member arranged in the feeding channel, a material passing port for the material to pass between the material blocking member and the feeding channel, and the material blocking member is rotatable relative to the feeding channel to adjust the size of the material passing port.

[0041] In this way, the size of the material passing port can be adjusted by rotating the material blocking member relative to the feeding channel according to the production capacity demand of the material, so as to control the amount of material discharged from the discharge port to meet the production demand on site.

[0042] In some embodiments, the position of the feeding port relative to the feeding channel is higher than the position of the discharge port relative to the feeding channel.

[0043] In this way, after the material enters the feeding channel from the feeding port, the material can be more quickly moved to the lower discharge port by the pushing action of the spiral blades in the feeding channel, thereby improving the discharge rate of the material.

[0044] In some embodiments, the cooling device further comprises a first transitional cooling member, the first transitional cooling member and the feeding port are sequentially connected, a first material passing channel and a first cooling channel arranged around the outer peripheral side of the first material passing channel are formed in the first transitional cooling member, and the first cooling channel is used for circulating a third cooling medium.

[0045] In this way, the material formed by high-temperature reaction directly flows into the first material passing channel, exchanges heat with the third cooling medium circulating in the first cooling channel outside the first material passing channel, so as to realize cooling of the material, and the material enters the feeding channel in a lower temperature state, thereby further improving the cooling effect of the material.

[0046] In some embodiments, the first transition cooling member is further provided with an air inlet and an air outlet, which are respectively communicated with opposite ends of the first material passage.

[0047] In this way, the air inlet, the gap space in the first material passage and the air outlet are sequentially communicated to form an air cooling passage, and the cooling gas can flow through the air cooling passage to directly contact and exchange heat with the material in the first material passage, thereby further improving the cooling effect on the material.

[0048] In some embodiments, the cooling device further comprises a second transition cooling member, the first transition cooling member, the second transition cooling member and the material inlet are sequentially communicated, the second transition cooling member is formed with a second material passage and a second cooling passage arranged around the outer circumferential side of the second material passage, and the second cooling passage is used to flow a fourth cooling medium.

[0049] In this way, the material formed through high-temperature reaction sequentially enters the first material passage and the second material passage, and sequentially exchanges heat with the third cooling medium around the outer circumferential side of the first material passage and the fourth cooling medium around the outer circumferential side of the second material passage, so that the material is cooled twice before entering the material feeding passage, thereby making the material enter the material feeding passage in a lower temperature state, and further improving the cooling effect on the material.

[0050] In a second aspect, the application provides a graphitization furnace, which comprises a furnace body and the above-mentioned cooling device, and the discharge end of the furnace body is communicated with the material inlet.

[0051] 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

[0052] 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 description of the preferred embodiments and are not meant to limit the scope of the application. Moreover, the same reference numerals in the attached drawings indicate the same or similar elements. In the drawings:

[0053] Figure 1 FIG. 1 is a structural schematic view of a graphitization furnace according to an embodiment of the application.

[0054] Figure 2 FIG. 2 is a partial structural schematic view of a cooling device according to an embodiment of the application.

[0055] Figure 3 FIG. 3 is a structural schematic view of a graphitization furnace according to another embodiment of the application. Figure 2 FIG. 4 is an enlarged view of part A in FIG. 3.

[0056] Figure 4 for Figure 2 A magnified view of a section at point B in the middle.

[0057] Figure 5 This is a schematic diagram of another part of the structure of the cooling device according to an embodiment of this application.

[0058] Explanation of reference numerals in the attached drawings: Furnace body 10; External cooling component 100; Feeding channel 110; Feed inlet 111; Discharge outlet 112; First heat-resistant layer 113; Gas inlet 114; External cooling channel 120; First inlet 121; First outlet 122; First main tube 130; First sleeve 140; Internal cooling component 200; Internal cooling channel 210; Second heat-resistant layer 211; Spiral blade 220; First cooling pipe 300; First liquid inlet channel 310; First liquid outlet channel 320; First baffle 330; Material baffle 400; Material passage. 410; First cooling mechanism 500; First driving component 600; Bearing 610; First transition cooling component 700; First material passage 710; First cooling passage 720; Air inlet 730; Air outlet 740; Second main pipe 750; Second sleeve 760; Second inlet 761; Second outlet 762; Second transition cooling component 800; Second material passage 810; Second cooling passage 820; Third main pipe 830; Third sleeve 840; Third inlet 841; Third outlet 842; Material 900. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] In addition, if there are these terms "first", "second", these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if there are the terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0062] In the present application, unless otherwise explicitly specified and limited, if there are the terms "mounting", "connecting", "connecting", "fixing" and the like, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0064] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration, and do not represent the only implementation.

[0065] The carbon atoms of the carbonaceous material are irregularly arranged, and only by high-temperature heat treatment, the carbon atoms are recrystallized and re-ordered, so as to present 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 using a graphitization furnace, so as to apply the graphite material to the production and preparation of battery negative materials.

[0066] The graphite material formed after the reaction has a high temperature, and if it is directly taken out from the furnace body, on the one hand, it is inconvenient to operate, and on the other hand, the high-temperature graphite material is easy to cause secondary reaction when contacting 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.

[0067] In the related art, a cooling device is usually arranged on the graphitization furnace, and the cooling device cools the graphite material in a water cooling manner, specifically: the graphite material is passed into the cooling channel in 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.

[0068] However, due to the structural limitation of the graphitization furnace itself, the length of the cooling channel distributed to the cooling device is limited, which leads to poor cooling effect of the graphite material in the cooling channel, resulting in that the quality of the output material does not meet the use requirement.

[0069] Therefore, in order to solve the problem that the cooling effect of the material obtained by high-temperature reaction is poor, resulting in that the quality of the output material does not meet the use requirement, one or more embodiments of the present application provide a cooling device. The cooling device of the present application is provided by cooperation of the outer cooling member and the inner cooling member. During the process of the material entering the feeding channel from the feeding port and being conveyed along the feeding channel, the first cooling medium flowing in the outer cooling channel exchanges heat with the outer circumferential side of the material through the channel wall of the outer cooling channel and the channel wall of the feeding channel, and the second cooling medium flowing in the inner cooling channel exchanges heat with the inner circumferential side of the material through the channel wall of the inner cooling channel. The nested cooperation of the outer cooling channel and the inner cooling channel does not need to lengthen the length of the cooling channel, realizes the double cooling of the material by the outer cooling channel and the inner cooling channel, thereby synchronously cooling the inner and outer sides of the material. Not only can the cooling rate of the material be accelerated, but also the material can be more uniformly cooled, thereby improving the cooling efficiency of the material, so that the quality of the material sent out from the discharging port meets the use requirement.

[0070] The cooling device disclosed in one or more embodiments of the present application can be used for cooling the graphite material reacted in the furnace body of the graphitization furnace, but is not limited to this. The above-mentioned cooling device can also be used for cooling the high-temperature material generated by other high-temperature reaction devices, which will not be described here.

[0071] Referring to Figure 1 and Figure 2 , the present application provides a cooling device, which comprises an outer cooling member 100 and an inner cooling member 200.

[0072] The outer cooling member 100 is formed with a feeding channel 110 and an outer cooling channel 120. The feeding channel 110 is provided with an inlet 111 and an outlet 112 at two ends thereof. The outer cooling channel 120 is arranged at the outer circumferential side of the feeding channel 110. The feeding channel 110 is used for conveying the material 900, and the outer cooling channel 120 is used for circulating the first cooling medium.

[0073] The inner cooling member 200 is arranged in the feeding channel 110 and is formed with an inner cooling channel 210. The extension track of the inner cooling channel 210 at least partially overlaps with the extension track of the feeding channel 110. The inner cooling channel 210 is used for circulating the second cooling medium.

[0074] It should be noted that, in the present application, referring to Figure 1 The cooling device can be used for cooling the material 900 produced by the graphitization furnace. The graphitization furnace refers to an equipment for high-temperature sintering of carbonaceous materials, recrystallization of carbon atoms, and reordering to convert into artificial graphite materials. The material 900 produced by the graphitization furnace is a graphite material in the form of granular powder.

[0075] The graphitization furnace includes a furnace body 10 and a discharge end communicated with the furnace body 10. The material 900 obtained by high-temperature reaction in the furnace body 10 can be directly or indirectly communicated from the discharge end of the furnace body 10 to the inlet 111 of the feeding channel 110 of the outer cooling member 100, so that the material 900 enters the feeding channel 110 from the inlet 111.

[0076] In the present application, the outer cooling member 100 refers to a structure capable of cooling and conveying the material 900 entering the feeding channel 110. In the outer cooling member 100, the feeding channel 110 formed thereby can convey the material 900 from the inlet 111 to the outlet 112 for discharge. The outer cooling channel 120 formed thereby circulates the first cooling medium. Since the outer cooling channel 120 is arranged at the outer circumferential side of the feeding channel 110, the first cooling medium exchanges heat with the material 900 conveyed along the feeding channel 110 through the channel wall of the outer cooling channel and the channel wall of the feeding channel 110, so as to remove the heat of the material 900 in the feeding channel 110 and cool the material 900.

[0077] In order to improve the cooling effect of the material 900, the extension track of the outer cooling channel 120 can be consistent with the feeding channel 110 and wrapped on the outer circumferential wall of the feeding channel 110. The first inlet 121 and the first outlet 122 are arranged at two ends of the outer cooling channel 120. The first inlet 121 is located at the same end as the outlet 112, and the first outlet 122 is located at the same end as the inlet 111.

[0078] Thus, when the material 900 flows along the feeding port 111, the feeding channel 110 and the discharging port 112, the second cooling medium flows along the first inlet 121, the outer cooling channel 120 and the first outlet 122 at the same time, the flowing direction of the material 900 is opposite to the flowing direction of the second cooling medium, the heat exchange time of the second cooling medium and the material 900 is improved, and then the cooling effect of the outer cooling channel 120 on the material 900 is improved.

[0079] The first cooling medium flowing in the outer cooling channel 120 can be, but is not limited to, low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen and the like.

[0080] It should be further noted that the outer cooling member 100 can be, but is not limited to, a tubular structure such as a circular tube or a square tube, and the feeding channel 110 formed by the outer cooling member 100 can be a columnar channel, in which case the extension trajectory of the feeding channel 110 corresponds to a straight line trajectory. Of course, the feeding channel 110 formed by the outer cooling member 100 can also be a curved channel, in which case the extension trajectory of the feeding channel 110 corresponds to a curved trajectory.

[0081] In the present application, the inner cooling member 200 refers to a structure arranged inside the feeding channel 110 and used for cooling and cooling the material 900 conveyed along the feeding channel 110. The inner cooling channel 210 formed by the inner cooling member 200 flows the second cooling medium, and the second cooling medium exchanges heat with the material 900 conveyed along the feeding channel 110 through the channel wall of the inner cooling channel 210, so as to take away the heat of the material 900 in the feeding channel 110 and cool and cool the material 900.

[0082] The second cooling medium flowing in the inner cooling channel 210 can be, but is not limited to, low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen and the like.

[0083] The inner cooling member 200 can be, but is not limited to, a tubular structure such as a circular tube or a square tube, and the inner cooling channel 210 formed by the inner cooling member 200 can be a columnar channel, in which case the extension trajectory of the inner cooling channel 210 corresponds to a straight line trajectory. Of course, the inner cooling channel 210 formed by the inner cooling member 200 can also be a curved channel, in which case the extension trajectory of the inner cooling channel 210 corresponds to a curved trajectory.

[0084] The extension trajectory of the inner cooling channel 210 at least partially coincides with the extension trajectory of the feeding channel 110, which can be understood as follows: the inner cooling channel 210 and the feeding channel 110 have an inner diameter difference, the inner cooling channel 210 is located in the feeding channel 110 and has the same extension direction as the feeding channel 110, and the length of the inner cooling channel 210 is less than or equal to the length of the feeding channel 110.

[0085] Exemplarily, referring to Figure 2The feeding channel 110 and the inner cooling channel 210 are both columnar channels, the inner cooling channel 210 is coaxially arranged in the feeding channel 110, and the lengths of the two are equal. At this time, the extension track of the inner cooling channel 210 is completely coincident with the extension track of the feeding channel 110.

[0086] It can be understood that, in the cooling device, the first cooling medium flowing in the outer cooling channel 120 exchanges heat with the outer circumferential side of the material 900 through the channel wall of the outer cooling channel 120 and the channel wall of the feeding channel 110 during the process that the material 900 enters the feeding channel 110 from the feeding port 111 and is conveyed along the feeding channel 110, and the second cooling medium flowing in the inner cooling channel 210 exchanges heat with the inner circumferential side of the material 900 through the channel wall of the inner cooling channel 210. The nested cooperation of the outer cooling channel 120 and the inner cooling channel 210 does not need to lengthen the length of the cooling channel, realizes the double cooling of the material 900 by the outer cooling channel 120 and the inner cooling channel 210, synchronously cools the inner and outer sides of the material 900, can not only accelerate the cooling rate of the material 900, but also more uniformly cools the material 900, thereby improving the cooling efficiency of the material 900, and the quality of the material 900 sent out from the discharging port 112 meets the use requirement.

[0087] In some embodiments of the present application, referring to Figure 2 The length of the feeding channel 110 is equal to the length of the inner cooling channel 210, and the inner diameter of the feeding channel 110 is greater than the inner diameter of the inner cooling channel 210.

[0088] Specifically, the feeding channel 110 and the inner cooling channel 210 are both columnar channels, the inner cooling channel 210 is arranged in the feeding channel 110 along the length direction of the feeding channel 110, and the extension tracks of the two can be both straight lines or both curves (such as sinusoidal curves).

[0089] Referring to Figure 2 L1 is defined as the length of the inner cooling channel 210, L2 is defined as the length of the feeding channel 110, then L1=L2, D1 is defined as the inner diameter of the inner cooling channel 210, and D2 is defined as the inner diameter of the feeding channel 110, then D1

[0090] It can be understood that the axis of the feeding channel 110 coincides with the axis of the inner cooling channel 210, and the outer diameter of the feeding channel 110 is greater than the outer diameter of the inner cooling channel 210, the feeding channel 110 is in an axial symmetry structure relative to the inner cooling channel 210, and the inner wall of the feeding channel 110 and the outer wall of the inner cooling channel 210 form a conveying channel for the material 900 to flow.

[0091] In this way, the material 900 can flow along the space between the feeding channel 110 and the inner cooling channel 210 to the direction of the discharge port 112, and the contact area between the material 900 and the wall surface of the inner cooling channel 210 is increased, so that the material 900 can exchange heat with the second cooling medium flowing in the inner cooling channel 210 before the material 900 flows out of the discharge port 112, the heat exchange time between the second cooling medium and the material 900 is prolonged, and the cooling effect on the material 900 is further improved. At the same time, the temperature of the cooled material 900 is relatively uniform, the output quality of the material 900 is further improved, and the material 900 can better meet the use requirements.

[0092] In some embodiments of the present application, referring to Figure 2 , the outer cooling channel 120 is configured as an annular channel surrounding the outer periphery of the feeding channel 110.

[0093] Specifically, the outer cooling member 100 includes a first main pipe 130 and a first sleeve pipe 140 sleeved outside the first main pipe 130, the feeding port 111 and the discharge port 112 are respectively arranged at opposite ends of the first main pipe 130 along the length direction, and the cavity of the first main pipe 130 forms the feeding channel 110. The outer wall of the first main pipe 130 and the inner wall of the first sleeve pipe 140 form the outer cooling channel 120, and at this time, the outer cooling channel 120 is annular.

[0094] By configuring the outer cooling channel 120 as an annular channel surrounding the outer periphery of the feeding channel 110, the outer periphery side of the material 900 can exchange heat with the first cooling medium flowing in the outer cooling channel 120 during the conveying of the material 900 along the outer cooling channel 120 to the discharge port 112, the heat exchange time between the first cooling medium and the material 900 is prolonged, and the cooling effect on the material 900 is further improved. At the same time, the temperature of the cooled material 900 is relatively uniform, the output quality of the material 900 is further improved, and the material 900 can better meet the use requirements.

[0095] In addition, in order to further improve the cooling effect on the material 900, the flow direction of the material 900 along the feeding channel 110 is opposite to the flow direction of the second cooling medium along the outer cooling channel 120, the heat exchange time between the second cooling medium and the material 900 is improved, and the cooling effect of the outer cooling channel 120 on the material 900 is further improved.

[0096] In some embodiments of the present application, referring to Figure 2 , the cooling device further includes a first cooling supply pipe 300, the first cooling supply pipe 300 is arranged in the inner cooling channel 210 and communicates with the inner cooling channel 210, and the first cooling supply pipe 300 is used for introducing the second cooling medium into the inner cooling channel 210 and discharging the heat-exchanged second cooling medium.

[0097] It can be understood that the first cooling supply pipe 300, the inner cooling channel 210 and the feeding channel 110 are coaxial and the outer diameters are sequentially increased. One end of the first cooling supply pipe 300 can be extended out of the inner cooling channel 210 to communicate with the first cooling mechanism 500, and the other end of the first cooling supply pipe 300 is located in the inner cooling channel 210 to communicate with the inner cooling channel 210. The first cooling mechanism 500 can be a refrigerator or the like capable of providing a second cooling medium.

[0098] In this way, the first cooling mechanism 500, the first cooling supply pipe 300 and the inner cooling channel 210 form a circulating flow path for the second cooling medium.

[0099] It can be understood that by penetrating the first cooling supply pipe 300 in the inner cooling channel 210 and communicating with the inner cooling channel 210, the second cooling medium circulating in the first cooling supply pipe 300 is transported into the inner cooling channel 210, so that the second cooling medium quickly fills the inner cooling channel 210 and exchanges heat with the material 900 in the feeding channel 110, thereby achieving cooling of the material 900. The second cooling medium after absorbing the heat of the material 900 in the feeding channel 110 is discharged through the first cooling supply pipe 300, thereby accelerating the cooling efficiency of the material 900.

[0100] Further, referring to Figure 2 and Figure 3 , the first cooling supply pipe 300 is provided with a first liquid inlet channel 310 and a first liquid outlet channel 320 at intervals, and the first liquid inlet channel 310 and the first liquid outlet channel 320 are respectively communicated with the inner cooling channel 210.

[0101] Specifically, the first cooling supply pipe 300 is provided with a first partition plate 330, and the first partition plate 330 divides the internal cavity of the first cooling supply pipe 300 into the first liquid inlet channel 310 and the first liquid outlet channel 320.

[0102] It can be easily understood that the first liquid inlet channel 310, the inner cooling channel 210 and the first liquid outlet channel 320 form a circulating flow path for the second cooling medium. The second cooling medium continuously flows from the first liquid inlet channel 310 into the inner cooling channel 210, so that the inner cooling channel 210 is quickly filled with the second cooling medium and exchanges heat with the material 900 in the feeding channel 110, thereby achieving rapid cooling of the material 900.

[0103] As the first liquid inlet channel 310 continuously flows the second cooling medium into the inner cooling channel 210, the second cooling medium in the inner cooling channel 210 that has been exchanged is squeezed into the first liquid outlet channel 320, and then flows out of the first liquid outlet channel 320.

[0104] Therefore, the second cooling medium circulates in the inner cooling channel 210, further accelerating the cooling rate of the material 900 and improving the cooling effect of the material 900.

[0105] Further, referring to Figure 2 , the ratio between the length of the first cooling pipe 300 and the length of the inner cooling channel 210 ranges from 0.6:1 to 0.9:1.

[0106] It should be noted that the length of the first cooling pipe 300 refers to the length of the first cooling pipe 300 in the length of the inner cooling channel 210, both coaxial.

[0107] With L1 defined as the length of the inner cooling channel 210 and L3 defined as the length of the first cooling pipe 300, then 0.6*L1≤L3≤0.9*L1.

[0108] If the length of the first cooling pipe 300 in the length of the inner cooling channel 210 is too long, the second cooling medium that has been heat exchanged in the inner cooling channel 210 needs a longer time to be discharged through the first cooling pipe 300, affecting the cooling efficiency of the material 900; if the length of the first cooling pipe 300 in the length of the inner cooling channel 210 is too short, it takes a longer time to fill the inner cooling channel 210 with the second cooling medium, which also affects the cooling efficiency of the material 900.

[0109] Therefore, by setting the ratio between the length of the first cooling pipe 300 and the length of the inner cooling channel 210 to range from 0.6:1 to 0.9:1, the inner cooling channel 210 can be filled with the second cooling medium in a shorter time, and the second cooling medium that has been heat exchanged can also be discharged in a shorter time, thereby improving the cooling efficiency of the material 900.

[0110] In some embodiments of the present application, the wall surface of the feeding channel 110 that contacts the material 900 is configured as a stainless steel structural member.

[0111] It is easy to understand that, in the radial direction of the feeding channel 110, the wall surface of the feeding channel 110 that contacts the material 900 is the inner wall of the feeding channel 110.

[0112] If the inner wall of the feeding channel 110 is a commonly used magnetic metal pipe wall, such as an iron pipe wall, the material 900 will generate magnetic particles when moving in the feeding channel 110 due to friction with the inner wall of the feeding channel 110, which will easily contaminate the material 900 with magnetic particle impurities, affecting the production quality of the material 900.

[0113] Therefore, by configuring the wall surface of the feeding channel 110 that contacts the material 900 as a stainless steel structural member, the weak magnetism and good mechanical characteristics of the stainless steel structural member are utilized to prevent the material 900 from generating magnetic particles when moving in the feeding channel 110 due to contact and friction with the inner wall of the feeding channel 110, thereby improving the production quality of the material 900.

[0114] Similarly, the wall of the inner cooling channel 210 in contact with the material 900 is configured as a stainless steel structure. Similarly, along the radial direction of the inner cooling channel 210, the wall of the inner cooling channel 210 in contact with the material 900 refers to the outer wall of the inner cooling channel 210.

[0115] In this way, the material 900 can also be prevented from generating magnetic particles due to contact and friction with the outer wall of the inner cooling channel 210 when moving in the feeding channel 110, thereby improving the production quality of the material 900.

[0116] Specifically, the outer cooling member 100 includes a first main tube 130 and a first sleeve tube 140 sleeved outside the first main tube 130, the feeding port 111 and the discharging port 112 are respectively arranged at opposite ends of the first main tube 130 along the length direction, and the first main tube 130 itself forms the feeding channel 110. The outer wall of the first main tube 130 and the inner wall of the first sleeve tube 140 form the outer cooling channel 120.

[0117] The first main tube 130 is configured as a stainless steel structure tube, and at this time, the wall of the feeding channel 110 in contact with the material 900 is the inner wall of the first main tube 130. The first main tube 130 can be but is not limited to 304 stainless steel structure, 310 stainless steel structure, 316L stainless steel structure, etc.

[0118] Similarly, the inner cooling member 200 is configured as a stainless steel structure tube, and the inner cooling member 200 itself forms the inner cooling channel 210, and at this time, the wall of the inner cooling channel 210 in contact with the material 900 is the outer wall of the inner cooling member 200. The inner cooling member 200 can be but is not limited to 304 stainless steel structure, 310 stainless steel structure, 316L stainless steel structure, etc.

[0119] Further, the wall of the outer cooling channel 120 is configured as a carbon steel structure.

[0120] It should be noted that since the wall of the outer cooling channel 120 is not in direct contact with the material 900, the wall of the outer cooling channel 120 is directly configured as a carbon steel structure, which takes advantage of the good mechanical structure strength of carbon steel to strengthen the overall structure strength of the outer cooling member 100 and also plays a corresponding protection role on the structure of the feeding channel 110.

[0121] Specifically, the first sleeve tube 140 sleeved outside the first main tube 130 of the outer cooling member 100 can be directly configured as a carbon steel tube, such as a Q235B carbon steel tube or a Q345R carbon steel tube.

[0122] In some embodiments of the present application, referring to Figure 2 and Figure 4 the wall of the feeding channel 110 in contact with the material 900 is provided with a first temperature-resistant layer 113.

[0123] Specifically, the inner wall of the feeding channel 110 is entirely covered with the first temperature-resistant layer 113, and the material of the first temperature-resistant layer 113 can be but is not limited to carbonaceous material, carbon material and carbon material.

[0124] During the movement of the material 900 along the feeding channel 110 to the discharge port 112, the material 900 will contact the first temperature-resistant layer 113 on the inner wall of the feeding channel 110, and heat exchange will be performed between the first temperature-resistant layer 113, the wall surface of the feeding channel 110 and the first cooling medium in the outer cooling channel 120 through the wall surface of the outer cooling channel 120, so as to reduce the temperature of the material 900.

[0125] By arranging the first temperature-resistant layer 113 on the wall surface of the feeding channel 110 in contact with the material 900, the material 900 with a relatively high temperature can not directly contact the wall surface of the feeding channel 110, the probability of structural damage of the feeding channel 110 due to excessively high wall surface temperature is reduced, and the frictional wear of the inner wall of the feeding channel 110 by the material 900 is also reduced, thereby improving the structural service life of the feeding channel 110.

[0126] Further, referring to Figure 4 , the ratio between the thickness of the first temperature-resistant layer 113 and the wall surface thickness of the feeding channel 110 is greater than 0 and less than 0.001.

[0127] The thickness of the first temperature-resistant layer 113 is defined as D3, and the wall surface thickness of the feeding channel 110 is defined as D4, then 0

[0128] It is easy to understand that if the thickness of the first temperature-resistant layer 113 is too large, the heat conduction effect of the first temperature-resistant layer 113 on the material 900 is poor, which affects the heat exchange efficiency between the material 900 and the first cooling medium in the outer cooling channel 120. If the thickness of the first temperature-resistant layer 113 is too small, the first temperature-resistant layer 113 cannot effectively protect the wall surface of the feeding channel 110.

[0129] Therefore, by setting the ratio between the thickness of the first temperature-resistant layer 113 and the wall surface thickness of the feeding channel 110 to be greater than 0 and less than 0.001, the thickness of the first temperature-resistant layer 113 is controlled within an appropriate range, which reduces the influence of the first temperature-resistant layer 113 on the cooling of the material 900 while effectively protecting the structure of the feeding channel 110.

[0130] Further, the thermal conductivity coefficient of the first temperature-resistant layer 113 is greater than the thermal conductivity coefficient of the wall surface of the feeding channel 110.

[0131] It should be noted that the thermal conductivity coefficient refers to the heat transferred through 1 square meter area in a certain time under the condition of stable heat transfer, with the temperature difference between the two sides of 1 degree (K, ℃) for 1m thick material, and the unit is watt / meter / degree (W / (m·K)).

[0132] By setting the thermal conductivity of the first temperature-resistant layer 113 to be greater than the thermal conductivity of the wall surface of the feeding channel 110, the heat conduction performance of the first temperature-resistant layer 113 is better than that of the wall surface of the feeding channel 110, so that the heat of the material 900 in the feeding channel 110 can be quickly conducted to the second cooling medium through the first temperature-resistant layer 113, the wall surface of the feeding channel 110 and the wall surface of the outer cooling channel 120, thereby improving the cooling efficiency of the material 900.

[0133] In some embodiments of the present application, referring to Figure 2 and Figure 3 the wall surface of the inner cooling channel 210 in contact with the material 900 is provided with a second temperature-resistant layer 211.

[0134] It is easy to understand that, in the radial direction of the inner cooling channel 210, the wall surface of the inner cooling channel 210 in contact with the material 900 refers to the outer wall of the inner cooling channel 210. Specifically, the outer wall of the inner cooling channel 210 is entirely covered with the second temperature-resistant layer 211, and the material of the second temperature-resistant layer 211 can be but is not limited to carbonaceous material, carbon material and carbon material.

[0135] During the movement of the material 900 along the feeding channel 110 to the discharge port 112, the material 900 also contacts the second temperature-resistant layer 211 on the outer wall of the inner cooling channel 210, and exchanges heat with the second cooling medium in the inner cooling channel 210 through the second temperature-resistant layer 211 and the wall surface of the inner cooling channel 210, thereby cooling the material 900 and reducing the temperature of the material 900.

[0136] By providing the second temperature-resistant layer 211 on the wall surface of the inner cooling channel 210 in contact with the material 900, the material 900 with a relatively high temperature can not directly contact the wall surface of the inner cooling channel 210, reducing the probability of structural damage of the inner cooling channel 210 due to the excessively high temperature of the wall surface, and also reducing the frictional wear of the material 900 on the outer wall of the inner cooling channel 210, thereby improving the structural life of the inner cooling channel 210.

[0137] Further, the ratio between the thickness of the second temperature-resistant layer 211 and the thickness of the wall surface of the inner cooling channel 210 is greater than 0 and less than 0.001.

[0138] Referring to Figure 3 D5 is defined as the thickness of the second temperature-resistant layer 211, and D6 is defined as the thickness of the wall surface of the inner cooling channel 210, then 0

[0139] It is easy to understand that if the thickness of the second temperature-resistant layer 211 is too large, the second temperature-resistant layer 211 has poor heat conduction effect on the material 900, which affects the heat exchange efficiency of the material 900 and the second cooling medium in the inner cooling channel 210. If the thickness of the second temperature-resistant layer 211 is too small, the second temperature-resistant layer 211 cannot effectively protect the wall surface of the inner cooling channel 210.

[0140] Therefore, by setting the ratio between the thickness of the second temperature-resistant layer 211 and the thickness of the wall surface of the inner cooling channel 210 to be greater than 0 and less than 0.001, the thickness of the second temperature-resistant layer 211 is controlled within an appropriate range, which reduces the influence of the second temperature-resistant layer 211 on the cooling of the material 900 while effectively protecting the structure of the inner cooling channel 210.

[0141] Further, the thermal conductivity of the second temperature-resistant layer 211 is greater than the thermal conductivity of the wall surface of the inner cooling channel 210.

[0142] It is not difficult to understand that by setting the thermal conductivity of the second temperature-resistant layer 211 to be greater than the thermal conductivity of the wall surface of the inner cooling channel 210, the heat conduction performance of the second temperature-resistant layer 211 is better than that of the wall surface of the inner cooling channel 210, so that the heat of the material 900 in the feeding channel 110 can be quickly conducted to the first cooling medium through the second temperature-resistant layer 211 and the inner cooling channel 210, thereby improving the cooling efficiency of the material 900.

[0143] It should be noted that in the present application, since the discharge port 112 is provided on the feeding channel 110, there is a risk that the material 900 will be oxidized when the cooled material 900 is discharged from the discharge port 112 and external air enters the feeding channel 110 from the discharge port 112.

[0144] Therefore, in some embodiments of the present application, referring to Figure 1 and Figure 2 , the feeding channel 110 is further provided with a gas inlet 114, and the gas inlet 114 is used to input a protective gas into the feeding channel 110.

[0145] Specifically, the gas inlet 114 can be connected to an external gas supply device, and the gas supply device inputs the protective gas into the feeding channel 110 through the gas inlet 114. The protective gas fills the gaps in the feeding channel 110 and dynamically seals the discharge port 112, so as to reduce the probability of oxidation of the material 900 during the movement and transportation of the material 900 in the feeding channel 110, and further improve the production quality of the material 900.

[0146] Specifically, the protective gas can be, but is not limited to, inert gases such as nitrogen and helium, which will not react with the material 900 and can dynamically seal the feeding channel 110.

[0147] In some embodiments of the present application, referring to Figure 2The inner cooling member 200 is rotatably arranged in the feeding channel 110 along its own axis, and a plurality of spiral blades 220 are arranged on the wall of the inner cooling channel 210 which is in contact with the material 900, and all the spiral blades 220 are distributed along the extension track of the inner cooling channel 210.

[0148] Specifically, the inner cooling member 200 is configured as a hollow pipe, and the two ends of the inner cooling member 200 are respectively installed in the corresponding two ends of the outer cooling member 100 through bearings 610, and one end of the inner cooling member 200 is also connected to the first driving member 600 to be driven to rotate around its own axis by the first driving member 600, and the first driving member 600 can be a rotating driving structure such as a motor or a motor.

[0149] It is not difficult to understand that after the material 900 enters the feeding channel 110 from the feeding port 111, the first driving member 600 drives the inner cooling member 200 to rotate, so that the inner cooling member 200 drives all the spiral blades 220 thereon to rotate around the axis of the inner cooling member 200, and the material 900 is pushed along the fixed feeding channel 110 under the pushing of the rotating spiral blades 220 and is transported to the discharging port 112, so that the cooled material 900 can be quickly discharged from the discharging port 112, and the discharging rate of the material 900 is improved.

[0150] In order to make the rotating inner cooling member 200 in a more favorable tensile state, the first driving member 600 and the discharging port 112 of the feeding channel 110 can be arranged on the same side, and the feeding port 111 and the first driving member 600 are arranged on opposite sides.

[0151] In addition, according to the cooling progress of the material 900 in the feeding channel 110, the rotation rate of the inner cooling member 200 driven by the first driving member 600 can be controlled to control the pushing rate of the material 900 in the feeding channel 110, thereby realizing the control of the discharging rate of the material 900.

[0152] Further, referring to Figure 2 The cooling device further comprises a material blocking member 400 arranged in the feeding channel 110, and the material blocking member 400 and the feeding channel 110 form a material passing port 410 for the material 900 to pass through, and the material blocking member 400 can rotate relative to the feeding channel 110 to adjust the size of the material passing port 410.

[0153] Specifically, the material blocking member 400 is configured as a baffle, and the material blocking member 400 is rotatably installed on the outer wall of the inner cooling member 200 through a rotating shaft (not shown in the figure) and is located in the feeding channel 110, and the material blocking member 400 is located between the feeding port 111 and the discharging port 112, and the upper and lower ends of the material blocking member 400 and the inner wall of the feeding channel 110 form the material passing port 410 for the material 900 to pass through.

[0154] The cooling device further comprises a second driving member (not shown in the figure), an output end of the second driving member is connected to the rotating shaft, so as to drive the material blocking member 400 to rotate relative to the inner cooling member 200 by driving the rotating shaft to rotate, so as to adjust the size of the material passing opening 410.

[0155] It can be understood that the size of the material passing opening 410 can be adjusted by rotating the material blocking member 400 relative to the feeding channel 110, so as to control the amount of material 900 discharged from the discharge opening 112, so as to meet the production demand on site.

[0156] In addition, in some embodiments of the present application, referring to Figure 2 , the position of the feeding opening 111 relative to the feeding channel 110 is higher than the position of the discharge opening 112 relative to the feeding channel 110.

[0157] Specifically, the feeding opening 111 and the discharge opening 112 are located on opposite sides of the axis of the feeding channel 110.

[0158] In this way, after the material 900 enters the feeding channel 110 from the feeding opening 111, the material 900 can be more quickly moved to the lower discharge opening 112 by the pushing action of the spiral blade 220 in the feeding channel 110, so as to improve the discharging rate of the material 900.

[0159] In some embodiments of the present application, referring to Figure 1 and Figure 5 , the cooling device further comprises a first transition cooling member 700, the first transition cooling member 700 and the feeding opening 111 are sequentially communicated, the first transition cooling member 700 forms a first material passing channel 710 and a first cooling channel 720 around the outer peripheral side of the first material passing channel 710, and the first cooling channel 720 is used for circulating a third cooling medium.

[0160] Specifically, the first transition cooling member 700 comprises a second main body pipe 750 and a second sleeve pipe 760 sleeved outside the second main body pipe 750, the second main body pipe 750 itself cavity forms the first material passing channel 710, the upper end of the second main body pipe 750 is directly connected and communicated with the discharge end of the furnace body 10, and the lower end of the second main body pipe 750 is directly or indirectly connected and communicated with the feeding opening 111.

[0161] The first cooling channel 720 is formed between the outer wall of the second main body pipe 750 and the inner wall of the second sleeve pipe 760, the second sleeve pipe 760 is provided with a second outlet 762 and a second inlet 761 at the upper and lower ends respectively, so that the third cooling medium enters the first cooling channel 720 from the second inlet 761 and flows out from the second outlet 762, so that the flow direction of the third cooling medium is opposite to the flow direction of the material 900 in the first material passing channel 710, thereby improving the cooling efficiency of the material 900.

[0162] Similarly, the third cooling medium flowing in the first cooling channel 720 can be, but is not limited to, low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen, and the like.

[0163] In addition, the furnace body 10, the first material passing channel 710, and the feeding port 111 are sequentially distributed along the height direction, so that the material 900 output from the furnace body 10 can flow through the first material passing channel 710 by gravity, and then enter the feeding channel 110 through the feeding port 111 of the feeding channel 110.

[0164] It can be understood that the material 900 formed by high-temperature reaction directly flows into the first material passing channel 710, and exchanges heat with the third cooling medium flowing in the first cooling channel 720 outside the first material passing channel 710, so as to cool the material 900, so that the material 900 enters the feeding channel 110 in a lower temperature state, and further improves the cooling effect of the material 900.

[0165] Of course, in some embodiments, the first transition cooling member 700 can further include a first inner tube (not shown in the figure) and a second liquid supply pipe (not shown in the figure), the first inner tube is coaxially arranged in the first material passing channel 710, the cavity of the first inner tube forms a third cooling channel (not shown in the figure), the third cooling channel is used for flowing the fifth cooling medium, the second liquid supply pipe is arranged in the first inner tube to supply the fifth cooling medium circulating in the first inner tube, and the fifth cooling medium can be, but is not limited to, low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen, and the like.

[0166] In this way, the fifth cooling medium flowing in the first inner tube and the third cooling medium flowing in the first cooling channel 720 double-cool the inner and outer sides of the material 900 in the first material passing channel 710, further accelerating the cooling effect of the material 900, so that the material 900 enters the feeding channel 110 in a lower temperature state.

[0167] Further, referring to Figure 1 and Figure 5 , the first transition cooling member 700 is further provided with an air inlet 730 and an air outlet 740, and the air inlet 730 and the air outlet 740 are respectively communicated with opposite ends of the first material passing channel 710.

[0168] Specifically, the air inlet 730 can be connected to an external air supply device, and the external air supply device continuously sends low-temperature cooling gas into the first material passing channel 710 through the air inlet 730, so that the cooling gas directly contacts and exchanges heat with the material 900 in the first material passing channel 710, so as to cool the material 900.

[0169] The gas outlet 740 can be connected to an external air extraction device, and the heat-exchanged cooling gas in the first material passage 710 can be extracted through the air extraction device. The diameter of the gas outlet 740 can be set to be smaller than the particle size of the material 900, so that the material 900 in the first material passage 710 cannot be extracted.

[0170] It is not difficult to understand that the air inlet 730, the gap space in the first material passage 710, and the gas outlet 740 are sequentially communicated to form a gas cooling channel. The cooling gas can flow through the gas cooling channel to directly contact and exchange heat with the material 900 in the first material passage 710, further improving the cooling effect on the material 900.

[0171] Further, referring to Figure 1 and Figure 5 , the cooling device further comprises a second transition cooling member 800, the first transition cooling member 700, the second transition cooling member 800, and the feed inlet 111 are sequentially communicated, the second transition cooling member 800 forms a second material passage 810 and a second cooling channel 820 around the outer circumferential side of the second material passage 810, and the second cooling channel 820 is used for flowing a fourth cooling medium.

[0172] Specifically, the second transition cooling member 800 comprises a third main tube 830 and a third sleeve tube 840 sleeved outside the third main tube 830, the third main tube 830 itself cavity forms the second material passage 810, and the upper and lower ends of the third main tube 830 are directly connected and communicated with the bottom end of the first transition cooling member 700 and the feed inlet 111 of the feeding channel 110, respectively.

[0173] The second cooling channel 820 is formed between the outer wall of the third main tube 830 and the inner wall of the third sleeve tube 840, the upper and lower ends of the third sleeve tube 840 are respectively provided with a third outlet 842 and a third inlet 841, the fourth cooling medium enters the second cooling channel 820 from the third inlet 841 and flows out from the third outlet 842. In this way, the material 900 flows from top to bottom in the second cooling channel 820, and the fourth cooling medium flows from bottom to top in the second cooling channel 820, prolonging the heat exchange time of the fourth cooling medium and the material 900 and improving the cooling effect on the material 900.

[0174] Similarly, the fourth cooling medium flowing in the second cooling channel 820 can be but not limited to low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen, and the like.

[0175] It can be understood that the material 900 formed by high-temperature reaction enters the first material passing channel 710 and the second material passing channel 810 in sequence, exchanges heat with the third cooling medium on the outer circumferential side of the first material passing channel 710 and the fourth cooling medium on the outer circumferential side of the second material passing channel 810 in sequence, and is cooled twice before entering the feeding channel 110, so that the material 900 enters the feeding channel 110 in a lower temperature state, and the cooling effect on the material 900 is further improved.

[0176] Of course, in some embodiments, the second transition cooling member 800 can further include a second inner tube (not shown in the figure) and a third liquid supply pipe (not shown in the figure), the second inner tube is coaxially arranged in the second material passing channel 810, a cavity of the second inner tube forms a fourth cooling channel (not shown in the figure) for circulating the sixth cooling medium, and the third liquid supply pipe is arranged in the second inner tube to supply the circulating sixth cooling medium to the second inner tube. The sixth cooling medium can be, but is not limited to, low-temperature cooling water, low-temperature cooling oil, low-temperature nitrogen and the like.

[0177] In this way, the sixth cooling medium circulating in the second inner tube and the fourth cooling medium circulating in the second cooling channel 820 double-cool and lower the temperature of the material 900 inside and outside the second material passing channel 810, further accelerating the cooling effect on the material 900, so that the material 900 enters the feeding channel 110 in a lower temperature state.

[0178] Referring again to Figure 1 The embodiment of the present application also provides a graphitization furnace, which comprises a furnace body 10 and the cooling device of any one of the above-mentioned embodiments, and the discharge end of the furnace body 10 is in communication with the feeding port 111.

[0179] It can be understood that in the graphitization furnace of the present application, the carbonaceous material is reacted in the furnace body 10 to produce graphite material, and the high-graphite material enters the first material passing channel 710 in the first transition cooling member 700 from the discharge end of the furnace body 10, exchanges heat with the third cooling medium in the first cooling channel 720 on the outer circumferential side through the wall surface of the first material passing channel 710, and at the same time, the cooling gas introduced into the first material passing channel 710 directly contacts and exchanges heat with the graphite material, so as to realize the first cooling of the graphite material.

[0180] The graphite material after the first cooling flows into the second material passing channel 810 of the second transition cooling member 800 from the discharge end of the first material passing channel 710, exchanges heat with the fourth cooling medium in the second cooling channel 820 on the outer circumferential side through the wall surface of the second material passing channel 810, so as to realize the second cooling of the graphite material.

[0181] The graphite material after the second cooling enters the feeding channel 110 from the discharge end of the second material passing channel 810 through the feeding port 111, and moves in the direction of the discharge port 112 under the pushing of the spiral blade 210. During the process, the first cooling medium in the outer cooling channel 120 exchanges heat with the outer circumferential side of the graphite material through the channel wall of the outer cooling channel 120 and the channel wall of the feeding channel 110, and the second cooling medium in the inner cooling channel 210 exchanges heat with the inner circumferential side of the graphite material through the channel wall of the inner cooling channel 210. In this way, the third cooling of the graphite material is realized.

[0182] Therefore, the cooling rate of the graphite material is accelerated, and the graphite material can be cooled more uniformly, thereby improving the cooling efficiency of the graphite material and ensuring that the quality of the graphite material sent out from the discharge port 112 meets the use requirements.

[0183] In addition, the application also provides a battery production system, which comprises the graphitization furnace.

[0184] It can be understood that the battery production system of the application can meet the use requirements of the graphite material produced by the graphitization furnace, thereby improving the production quality of the battery.

[0185] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0186] The above-described embodiments only express several implementation manners of the application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A cooling device, characterized in that, include: An external cooling component is formed with a feeding channel and an external cooling channel. The feeding channel has an inlet and an outlet at both ends, respectively. The external cooling channel is located on the outer periphery of the feeding channel. The feeding channel is used to transport materials, and the external cooling channel is used to circulate a first cooling medium. An internal cooling component is disposed within the feeding channel. The internal cooling component forms an internal cooling channel, and the extension trajectory of the internal cooling channel at least partially overlaps with the extension trajectory of the feeding channel. The internal cooling channel is used for the flow of a second cooling medium.

2. The cooling device according to claim 1, characterized in that, The length of the feeding channel is equal to the length of the internal cooling channel, and the inner diameter of the feeding channel is greater than the inner diameter of the internal cooling channel.

3. The cooling device according to claim 1, characterized in that, The external cooling channel is constructed as a ring-shaped channel surrounding the outer periphery of the feeding channel.

4. The cooling device according to claim 1, characterized in that, The cooling device further includes a first cooling pipe, which passes through the inner cooling channel and communicates with the inner cooling channel. The first cooling pipe is used to introduce a second cooling medium into the inner cooling channel and to discharge the second cooling medium after heat exchange.

5. The cooling device according to claim 4, characterized in that, The first cooling pipe is provided with a first liquid inlet channel and a first liquid outlet channel at intervals, and the first liquid inlet channel and the first liquid outlet channel are respectively connected to the internal cooling channel.

6. The cooling device according to claim 4 or 5, characterized in that, The ratio between the length of the first cooling pipe and the length of the internal cooling channel ranges from 0.6:1 to 0.9:

1.

7. The cooling device according to claim 1, characterized in that, The wall surface of the feeding channel that contacts the material is constructed of stainless steel; and / or, the wall surface of the internal cooling channel that contacts the material is constructed of stainless steel.

8. The cooling device according to claim 1 or 7, characterized in that, The walls of the external cooling channel are constructed of carbon steel structural components.

9. The cooling device according to claim 1, characterized in that, The wall surface of the feeding channel that comes into contact with the material is provided with a first heat-resistant layer.

10. The cooling device according to claim 9, characterized in that, The ratio between the thickness of the first heat-resistant layer and the wall thickness of the feeding channel is greater than 0 and less than 0.

001.

11. The cooling device according to claim 9, characterized in that, The thermal conductivity of the first heat-resistant layer is greater than that of the wall surface of the feeding channel.

12. The cooling device according to claim 1, characterized in that, The wall surface of the internal cooling channel that comes into contact with the material is provided with a second heat-resistant layer.

13. The cooling device according to claim 12, characterized in that, The ratio between the thickness of the second heat-resistant layer and the wall thickness of the internal cooling channel is greater than 0 and less than 0.

001.

14. The cooling device according to claim 12, characterized in that, The thermal conductivity of the second heat-resistant layer is greater than that of the wall surface of the internal cooling channel.

15. The cooling device according to claim 1, characterized in that, The feeding channel is also provided with an air inlet, which is used to input protective gas into the feeding channel.

16. The cooling device according to claim 1, characterized in that, The internal cooling component is rotatably disposed within the feeding channel, and the wall surface of the internal cooling channel in contact with the material is provided with multiple spiral blades, all of which are distributed at intervals along the extension trajectory of the internal cooling channel.

17. The cooling device according to claim 1 or 16, characterized in that, The cooling device further includes a baffle installed in the feeding channel, the baffle and the feeding channel forming a passage for the material to pass through, and the baffle can rotate relative to the feeding channel to adjust the size of the passage.

18. The cooling device according to claim 1 or 16, characterized in that, The position of the inlet relative to the feeding channel is higher than the position of the outlet relative to the feeding channel.

19. The cooling device according to claim 1, characterized in that, The cooling device further includes a first transition cooling element, which is connected to the feed inlet in sequence. The first transition cooling element has a first material passage and a first cooling channel surrounding the outer periphery of the first material passage. The first cooling channel is used to circulate a third cooling medium.

20. The cooling device according to claim 19, characterized in that, The first transition cooling component is also provided with an air inlet and an air outlet, which are respectively connected to the opposite ends of the first material passage.

21. The cooling device according to claim 19, characterized in that, The cooling device further includes a second transition cooling element. The first transition cooling element, the second transition cooling element and the feed inlet are connected in sequence. The second transition cooling element has a second material passage and a second cooling channel surrounding the outer periphery of the second material passage. The second cooling channel is used to circulate a fourth cooling medium.

22. A graphitization furnace, characterized in that, It includes a furnace body and a cooling device as described in any one of claims 1 to 21, wherein the discharge end of the furnace body is connected to the feed inlet.

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