Graphite tooling for a carbonization sintering furnace
Patent Information
- Application Number
- CN202522245189.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0004]本实用新型的目的在于提供一种碳化烧结炉石墨工装，以解决上述背景技术中提出的PI碳化烧结工序中排焦不充分的问题
1.本实用新型通过安装有底座、排焦通道、第一排焦孔、第二排焦孔、喇叭槽、第一通风槽和第二通风槽，实现了PI碳化过程中焦气的快速排出，排焦通道对PI底部焦气进行集中收集，第一排焦孔将收集的焦气定向导流至喇叭槽，第二排焦孔弥补排焦通道的覆盖盲区，喇叭槽通过上窄下宽结构降低焦气流动阻力并加速汇聚，最终第一通风槽、第二通风槽和通风口形成气流通道，将焦气快速排出工装外，通过排焦通道的集中收集、排焦孔的定向导流和喇叭槽的阻力降低，减少焦气在PI底部的停留时间，避免焦气局部浓度过高，有效减少焦气对PI表层的侵蚀，防止因焦气堆积导致的PI局部发泡和厚度不均问题，同时增加焦气与底座的接触面积，分散碳化阶段的局部应力，缓解PI自由收缩产生的变形，焦气的快速导出也减少了在工装内部的残留，降低焦化物在通风槽内壁沉积的概率，延长工装使用寿命；
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Figure CN224757538U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of graphite tooling technology, specifically to a graphite tooling for a carbonization sintering furnace. Background Technology
[0002] Currently, high-performance graphite materials are mostly made from polyimide (PI) films as raw materials, and are prepared by high-temperature carbonization and graphitization in a carbonization sintering furnace. Among them, the graphite tooling used to support the PI rolls in the carbonization sintering furnace is the core component that directly affects the PI carbonization quality, production efficiency and product qualification rate.
[0003] The existing graphite tooling has the following defects: insufficient coke removal in the current carbonization and sintering process and the outer ring of a single roll of PI extending beyond the edge of the graphite tooling can easily lead to localized adhesion, bright stripe deformation, and uneven foaming thickness, thus affecting the yield. Utility Model Content
[0004] The purpose of this invention is to provide a graphite tooling for a carbonization sintering furnace to solve the problem of insufficient coke removal in the PI carbonization sintering process mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a graphite fixture for a carbonization sintering furnace, comprising a base, a coke discharge channel, a first coke discharge hole, and a second coke discharge hole. A roller groove is provided at the top of the outer wall of the base, and a coke discharge channel is also provided at the top of the outer wall of the base. Eight coke discharge channels are arranged around the roller groove, forming a circular arrangement with the roller groove as the center. Five first coke discharge holes are provided at the bottom of the inner wall of each coke discharge channel, arranged in a single row within the coke discharge channel. A group of second coke discharge holes is provided between adjacent coke discharge channels, resulting in a total of eight groups of second coke discharge holes. Each group contains six second coke discharge holes arranged in a single row between adjacent coke discharge channels. Both the first and second coke discharge holes penetrate the base and connect to a horn groove. A first ventilation groove and a second ventilation groove are provided below the horn groove.
[0006] Preferably, the top of the outer wall of the base is provided with six roller grooves and six sets of coke discharge channels. The six roller grooves are arranged on the left and right sides of the outer wall of the base, with three roller grooves on each side. The eight coke discharge channels arranged around the circumference of the roller grooves form a group. The bottom of the inner wall of the roller groove is provided with a roller groove.
[0007] Preferably, a limiting boss is provided on the outer side of the coke discharge channel. Each coke discharge channel has a limiting boss on its outer side. The limiting boss is a semi-circular protrusion. The limiting boss is located at the top of the outer wall of the base. The three limiting bosses on the left side of the base open to the left, and the three limiting bosses on the right side of the base open to the right.
[0008] Preferably, the horn groove is located at the bottom of the outer wall of the base, the horn groove is narrow at the top and wide at the bottom, the inner wall side of the horn groove is connected to the first row of coke holes and the second row of coke holes, and the bottom of the horn groove diffuses outward.
[0009] Preferably, a first support plate is provided on the left side of the bottom end of the outer wall of the base, a third support plate is provided on the right side of the bottom end of the outer wall of the base, and a second support plate is provided in the middle of the bottom end of the outer wall of the base, with the second support plate located between the first support plate and the third support plate.
[0010] Preferably, a first ventilation groove is provided between the first support plate and the second support plate, and three horn grooves arranged in a single row are provided at the top of the inner wall of the first ventilation groove; a second ventilation groove is provided between the second support plate and the third support plate, and three horn grooves arranged in a single row are provided at the top of the inner wall of the second ventilation groove.
[0011] Preferably, the outer wall side of the first support plate is provided with three ventilation openings, which pass through the first support plate and are connected to the first ventilation groove. The outer wall side of the third support plate is also provided with three ventilation openings, which pass through the third support plate and are connected to the second ventilation groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by installing a base, a coke discharge channel, a first coke discharge hole, a second coke discharge hole, a trumpet groove, a first ventilation groove, and a second ventilation groove, achieves rapid discharge of coke gas during the PI carbonization process. The coke discharge channel centrally collects the coke gas at the bottom of the PI assembly. The first coke discharge hole directs the collected coke gas to the trumpet groove. The second coke discharge hole fills the coverage blind spots of the coke discharge channel. The trumpet groove, with its narrow top and wide bottom structure, reduces the flow resistance of the coke gas and accelerates its convergence. Finally, the first ventilation groove, the second ventilation groove, and the ventilation opening form an airflow channel, rapidly discharging the coke gas outside the tooling. By centrally collecting coke through the coke discharge channel, guiding the flow through the coke discharge hole, and reducing the resistance of the horn groove, the residence time of coke gas at the bottom of the PI is reduced, avoiding excessively high local concentrations of coke gas. This effectively reduces the erosion of the PI surface by coke gas, preventing local foaming and uneven thickness problems caused by coke gas accumulation. At the same time, it increases the contact area between coke gas and the base, disperses local stress during the carbonization stage, alleviates deformation caused by free shrinkage of the PI, and the rapid discharge of coke gas also reduces residue inside the tooling, lowers the probability of coke deposits on the inner wall of the ventilation slot, and extends the service life of the tooling. 2. This utility model, by installing a base and limiting boss, defines the outer layer boundary of PI, ensuring uniform spacing between the outer layers when multiple sets of single-roll PI are placed on the base. This effectively limits the radial expansion and lateral offset of single-roll PI, preventing the outer ring of PI from exceeding the preset range, thereby preventing local adhesion and bright stripe deformation between single-roll PI. By ensuring uniform spacing between the outer layers of multiple sets of single-roll PI, the risk of adhesion caused by interlayer adsorption is reduced, ensuring consistent coke gas discharge conditions during simultaneous carbonization of multiple sets of PI, and improving the quality stability of batch products. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the first ventilation slot and the second ventilation slot of this utility model; Figure 3 This is a side view of the present invention. Figure 4 This is a schematic diagram of the horn groove structure of this utility model; Figure 5 This is a schematic diagram of the coke discharge channel structure of this utility model.
[0014] In the diagram: 1. Base; 2. First ventilation slot; 3. Second ventilation slot; 4. Ventilation opening; 5. Limiting boss; 6. Coke discharge channel; 7. First coke discharge hole; 8. Second coke discharge hole; 9. Roller groove; 10. Roller groove; 11. Horn groove; 12. First support plate; 13. Second support plate; 14. Third support plate. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Please see Figure 1 and Figure 5 An embodiment of this utility model is provided: a graphite tooling for a carbonization sintering furnace, wherein the top of the outer wall of the base 1 is provided with six roller grooves 9 and six sets of coke discharge channels 6, the six roller grooves 9 are arranged on the left and right sides of the outer wall of the base 1, each side is provided with three roller grooves 9, and eight coke discharge channels 6 arranged around the circumference of the roller grooves 9 form a group, the bottom of the inner wall of the roller grooves 9 is provided with a roller groove 10, and a limiting boss 5 is provided on the outer side of each group of coke discharge channels 6; Furthermore, when the original PI film is wound into a single roll of PI in the form of an independent roll, PI is the abbreviation for polyimide. The inner wall of the single roll of PI is interlocked with the outer wall of the roller, and the inner wall of the roller is interlocked with the outer wall of the roll. Then, six sets of single rolls of PI are placed on the base 1, so that the roller is interlocked with the roller groove 9, and the roll is interlocked with the roll groove 10. The bottom end of the outer wall of PI is in contact with the coke discharge channel 6 and the second coke discharge hole 8 on the base 1. At the same time, the side of the outer wall of PI is in contact with the inner arc side of the limiting boss 5. The semi-circular arc structure of the limiting boss 5 is used to laterally block the outer wall of PI, restricting the radial expansion and lateral displacement of the single roll of PI, defining the outer layer boundary of PI, and avoiding local adhesion and bright stripe deformation between single rolls of PI caused by the outer ring exceeding the boundary. At the same time, the lateral limiting ensures that the outer layer spacing of multiple sets of single rolls of PI is consistent, reducing adhesion caused by interlayer adsorption.
[0019] Please see Figure 1 , Figure 2 and Figure 5 An embodiment of this utility model is provided: a graphite tooling for a carbonization sintering furnace, wherein a roller groove 9 is provided at the top of the outer wall of the base 1, a coke discharge channel 6 is provided at the top of the outer wall of the base 1, five first coke discharge holes 7 are provided at the bottom of the inner wall of the coke discharge channel 6, and a set of second coke discharge holes 8 is provided between every two coke discharge channels 6. The first coke discharge holes 7 and the second coke discharge holes 8 both penetrate the base 1 and are connected to the trumpet groove 11. A first ventilation groove 2 and a second ventilation groove 3 are provided below the trumpet groove 11. Furthermore, the bottom end of the outer wall of the PI (polyimide) contacts the coke discharge channel 6 and the second coke hole 8, increasing the contact area between the coke gas and the base 1. This increased contact area can disperse the local stress during the carbonization stage of the PI, alleviate the deformation caused by free shrinkage, and reduce local foaming and uneven thickness of the PI caused by the accumulation of coke gas at the bottom. During the carbonization process, the coke gas generated by the PI diffuses into the first coke hole 7 through the coke discharge channel 6. The groove structure of the coke discharge channel 6 can collect the coke gas generated at the bottom of the PI in a concentrated manner, and then guide the coke gas to diffuse into the first coke hole 7 through the inner wall of the coke discharge channel 6. The coke orifice 7 transforms the dispersed generation of coke gas into an orderly flow, preventing excessively high local concentrations caused by irregular diffusion of coke gas at the bottom of the PI. The coke gas is guided by the coke discharge channel 6 to quickly enter the first coke discharge orifice 7, improving the efficiency of coke gas discharge and reducing the erosion of the PI surface by coke gas. Then, the second coke discharge orifice 8 discharges coke from the areas not covered by the coke discharge channel 6, making up for the blind spots of the coke discharge channel 6 and preventing local coke gas accumulation caused by incomplete coverage of the coke discharge channel 6. This further improves the sufficiency of coke discharge and ensures the consistency of carbonization quality in all areas of a single roll of PI.
[0020] Please see Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model is provided: a graphite tooling for a carbonization sintering furnace, wherein the horn groove 11 is disposed at the bottom end of the outer wall of the base 1, the horn groove 11 is narrow at the top and wide at the bottom, the inner side of the horn groove 11 is connected to the first row of coke holes 7 and the second row of coke holes 8, and the bottom end of the horn groove 11 diffuses outward. Furthermore, the first row of coke orifices 7 and the second row of coke orifices 8 discharge the coke gas from the PI into the trumpet groove 11. The coke gas is concentrated and gathered through the trumpet groove 11, preventing the coke gas from spreading disorderly inside the base 1. The trumpet groove 11 discharges the coke gas into the first ventilation groove 2 and the second ventilation groove 3. At the same time, the narrow inner wall of the trumpet groove 11 is connected to the outlet of the first row of coke orifices 7 and the second row of coke orifices 8, ensuring that all the coke gas enters the trumpet groove 11. The wide opening at the bottom of the trumpet groove 11 expands the outlet cross section, reduces the flow resistance of the coke gas, increases the speed of the coke gas spreading outward, and accelerates the downward flow of the coke gas, preventing the coke gas from accumulating in the trumpet groove 11, thus indirectly ensuring the quality of the PI. The rapid discharge of the coke gas reduces the residence time inside the base 1, avoiding foaming and uneven thickness caused by secondary contact of the coke gas with the PI, and further improving the product quality.
[0021] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4An embodiment of this utility model is provided: a graphite tooling for a carbonization sintering furnace, wherein a ventilation opening 4 is provided on the outer side of the first support plate 12, the ventilation opening 4 passes through the first support plate 12 and is connected to the first ventilation groove 2, a ventilation opening 4 is also provided on the outer side of the third support plate 14, the ventilation opening 4 passes through the third support plate 14 and is connected to the second ventilation groove 3, and a second support plate 13 is provided between the first support plate 12 and the third support plate 14; Furthermore, when the coke gas is discharged into the first ventilation slot 2 and the second ventilation slot 3 through the trumpet groove 11, the flowing air flows in from the front end of the first ventilation slot 2 and the second ventilation slot 3 and flows out from the rear end, quickly discharging the coke gas. The thrust generated by the air flow transports the coke gas accumulated in the trumpet groove 11, greatly improving the coke discharge efficiency and avoiding secondary diffusion caused by the coke gas staying in the first ventilation slot 2 and the second ventilation slot 3 for too long. This also prevents PI foaming and interlayer adhesion caused by excessively high local coke gas concentration. At the same time, the ventilation openings 4 on the sides of the first ventilation slot 2 and the second ventilation slot 3 further accelerate the air flow. By speeding up the discharge of coke gas, the effect of discharging coke gas in the first ventilation slot 2 and the second ventilation slot 3 is enhanced, reducing the residual time of coke gas in the first ventilation slot 2 and the second ventilation slot 3 and reducing the probability of coke deposits on the inner walls of the first ventilation slot 2 and the second ventilation slot 3.
[0022] Working principle: During operation, the single roll of PI, which is wound into an independent roll, is first fitted with the roller, so that the roller is embedded in the roller groove 9 of the base 1, and the roller is embedded in the roller groove 10, thus completing the positioning of the single roll of PI. At the same time, the outer side of the PI is in contact with the inner arc side of the semi-circular limiting boss 5, which restricts the PI from expanding outward and shifting laterally, thus preventing the single rolls of PI from sticking together or deforming. During the carbonization process, the coke gas generated by the PI first comes into contact with the coke discharge channel 6 and the second coke discharge hole 8 of the base 1. After the coke discharge channel 6 collects the coke gas at the bottom of the PI, it guides the coke gas into the first coke discharge hole 7 on the inner wall. The second coke discharge hole 8 between adjacent coke discharge channels 6 fills the coke discharge blind area, ensuring that the coke gas in each area of the PI can be discharged. The coke gas enters the trumpet groove 11 of the base 1 through the first coke discharge hole 7 and the second coke discharge hole 8. The trumpet groove 11 reduces the flow resistance by expanding the gas outlet cross section at the bottom, thus accelerating the flow of the coke gas into the first ventilation groove 2 and the second ventilation groove 3 below. At this time, air flows in the first ventilation slot 2 and the second ventilation slot 3. The airflow is accelerated by the ventilation holes 4 on the first support plate 12 and the third support plate 14. Under the action of the airflow thrust, the coke gas is quickly discharged outside the tooling, avoiding the coke gas residue from corroding the PI and causing foaming and uneven thickness, thus ensuring the quality of PI carbonization.
[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A graphite fixture for a carbonization sintering furnace, comprising a base (1), a coke discharge channel (6), a first coke discharge hole (7), and a second coke discharge hole (8), characterized in that: The top of the outer wall of the base (1) is provided with a roller groove (9) and a coke discharge channel (6). There are eight coke discharge channels (6) around the roller groove (9). The coke discharge channels (6) are arranged in a circle with the roller groove (9) as the center. There are five first coke discharge holes (7) at the bottom of the inner wall of the coke discharge channel (6). The five first coke discharge holes (7) are arranged in a single row in the coke discharge channel (6). There is a set of second coke discharge holes (8) between adjacent coke discharge channels (6). There are a total of eight sets of second coke discharge holes (8). The six second coke discharge holes (8) in each set are arranged in a single row between adjacent coke discharge channels (6). The first coke discharge holes (7) and the second coke discharge holes (8) both pass through the base (1) and are connected to the trumpet groove (11). The first ventilation groove (2) and the second ventilation groove (3) are provided below the trumpet groove (11).
2. The graphite fixture for a carbonization sintering furnace according to claim 1, characterized in that: The top of the outer wall of the base (1) is provided with six roller grooves (9) and six sets of coke discharge channels (6). The six roller grooves (9) are arranged on the left and right sides of the outer wall of the base (1), with three roller grooves (9) on each side. The eight coke discharge channels (6) arranged around the circumference of the roller grooves (9) form a group. The bottom of the inner wall of the roller grooves (9) is provided with a roller groove (10).
3. The graphite fixture for a carbonization sintering furnace according to claim 2, characterized in that: A limiting boss (5) is provided on the outside of the coke discharge channel (6). The limiting boss (5) is a semi-circular protrusion. The limiting boss (5) is located at the top of the outer wall of the base (1). The openings of the three limiting bosses (5) on the left side of the base (1) face to the left, and the openings of the three limiting bosses (5) on the right side of the base (1) face to the right.
4. The graphite fixture for a carbonization sintering furnace according to claim 1, characterized in that: The horn groove (11) is located at the bottom of the outer wall of the base (1). The horn groove (11) is narrow at the top and wide at the bottom. The inner side of the horn groove (11) is connected to the first row of coke holes (7) and the second row of coke holes (8). The bottom of the horn groove (11) spreads outward.
5. The graphite fixture for a carbonization sintering furnace according to claim 1, characterized in that: A first support plate (12) is provided on the left side of the bottom of the outer wall of the base (1), a third support plate (14) is provided on the right side of the bottom of the outer wall of the base (1), and a second support plate (13) is provided in the middle of the bottom of the outer wall of the base (1). The second support plate (13) is located between the first support plate (12) and the third support plate (14).
6. The graphite fixture for a carbonization sintering furnace according to claim 5, characterized in that: A first ventilation groove (2) is provided between the first support plate (12) and the second support plate (13). Three single-row horn grooves (11) are provided at the top of the inner wall of the first ventilation groove (2). A second ventilation groove (3) is provided between the second support plate (13) and the third support plate (14). Three single-row horn grooves (11) are provided at the top of the inner wall of the second ventilation groove (3).
7. The graphite fixture for a carbonization sintering furnace according to claim 5, characterized in that: The outer side of the first support plate (12) is provided with three ventilation openings (4), which pass through the first support plate (12) and are connected to the first ventilation groove (2). The outer side of the third support plate (14) is also provided with three ventilation openings (4), which pass through the third support plate (14) and are connected to the second ventilation groove (3).