CN220295127U - Drying furnace for carbon fiber sizing - Google Patents
Drying furnace for carbon fiber sizing Download PDFInfo
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- CN220295127U CN220295127U CN202321812871.4U CN202321812871U CN220295127U CN 220295127 U CN220295127 U CN 220295127U CN 202321812871 U CN202321812871 U CN 202321812871U CN 220295127 U CN220295127 U CN 220295127U
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- 238000001035 drying Methods 0.000 title claims abstract description 42
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 36
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 36
- 238000004513 sizing Methods 0.000 title claims abstract description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 62
- 230000000149 penetrating effect Effects 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005485 electric heating Methods 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007380 fibre production Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 206010020112 Hirsutism Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- Inorganic Fibers (AREA)
Abstract
The utility model relates to the field of carbon fiber production equipment manufacturing, in particular to a drying furnace for carbon fiber sizing. The device comprises a furnace body, wherein a first bin and a second bin are arranged in the furnace body, a radiation heating assembly is arranged at the bottom of the first bin and the bottom of the second bin, a gas flow guiding device is arranged at the connection position of the first bin and the second bin in a communication manner, and the other end of the gas flow guiding device faces the outside of the furnace body; the outside of the furnace body is provided with a circulating air channel, and the other end of the gas flow guiding device is communicated with the side surface of the circulating air channel; the free ends of the first bin and the second bin are provided with end air seals and flow guiding devices; the two end air seals and the flow guiding device are respectively communicated with the two ends of the circulating air duct. According to the utility model, through a drying mode with radiation heating as a main component and convection heat exchange as an auxiliary component, the damage of air convection to carbon filaments can be reduced, the generation of broken filaments is reduced, and the drying effect is ensured.
Description
Technical Field
The utility model relates to the field of carbon fiber production equipment manufacturing, in particular to a drying furnace for carbon fiber sizing.
Background
The carbonization process of the carbon fiber is to produce carbon fiber precursor through the steps of pre-oxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, sizing, drying and the like.
In the carbon fiber production process, in order to obtain good processability in the subsequent process of the carbon fiber product, a sizing drying treatment is often required. The sizing and drying aim is to form a layer of protective film of sizing agent on the surface of the carbon fiber to obtain carbon fiber tows with water content not more than 0.1%.
The existing sizing and drying device usually adopts air convection heat exchange to dry carbon fiber tows, but the design damages carbon filaments and easily causes the carbon filaments to have broken filaments; and the drying is incomplete, so that the phenomenon of adhesion and the like occurs after the carbon fiber tows are stored for a period of time, and the subsequent processing of the carbon fiber tows is seriously influenced. Therefore, how to reduce the moisture content of the carbon fiber tows and avoid the occurrence of the hairiness of the carbon fibers is a technical problem to be solved.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the utility model provides a carbon fiber sizing back drying furnace for carbon fiber is dry after sizing, reduces the injury of air convection to the carbon silk, reduces the production of hairiness, improves the drying effect simultaneously.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a drying furnace after carbon fiber sizing, includes the furnace body, the furnace body is connected and is provided with first bin and second bin, the bottom of first bin and second bin is provided with radiation heating assembly, the hookup location of first bin and second bin is provided with gas guiding device, gas guiding device's one end intercommunication first bin and second bin, gas guiding device's the other end is towards the furnace body outside;
the outside of the furnace body is provided with a circulating air channel, and the other end of the gas flow guiding device is communicated with the side surface of the circulating air channel; the free ends of the first bin and the second bin are provided with end air seals and flow guiding devices; the two end air seals and the flow guiding device are respectively communicated with the two ends of the circulating air duct.
Further, the inside first water conservancy diversion spare and the second water conservancy diversion spare that is provided with the top and connects of gas guiding device, first water conservancy diversion spare orientation the direction slope setting of first bin, the second water conservancy diversion spare orientation the direction slope setting of second bin, first water conservancy diversion spare with the hookup location of second water conservancy diversion spare orientation the furnace body is outside.
Further, an inclined included angle between the first guide piece and the first bin is 95-120 degrees, and an inclined included angle between the second guide piece and the second bin is 95-120 degrees.
Further, a detachable filter device is arranged between the gas guiding device and the circulating air duct, a circulating fan is connected to the other side of the circulating air duct, which is connected with the gas guiding device, and the detachable filter device and the gas guiding device are in the same plane.
Further, a fresh air adjusting port and a waste discharge adjusting port are arranged on the circulating air duct, waste gas filtered by the detachable filtering device is discharged through the waste discharge adjusting port, and the fresh air adjusting port is used for supplementing air.
Further, a dehumidifier, an air quantity regulating valve and a heater are sequentially arranged in the pipeline of the circulating air duct facing the two end air seals and the flow guiding device.
Further, the end gas seal and flow guiding device comprises a first gas penetrating plate and a second gas penetrating plate which are arranged in parallel, and a flow guiding plate which is obliquely arranged between the first gas penetrating plate and the second gas penetrating plate, wherein the flow guiding plate is obliquely oriented to the furnace body, one end of the flow guiding plate is arranged in the middle of the first gas penetrating plate and divides the first gas penetrating plate into two parts, the other end of the flow guiding plate is arranged at one end, close to the furnace body, of the second gas penetrating plate, air holes are formed in the first gas penetrating plate and the second gas penetrating plate, and the air holes of the second gas penetrating plate are obliquely arranged along the transfer direction of yarns.
Further, the radiation heating component is a plurality of electric heating plates which are arranged at the bottoms of the first bin and the second bin, and the heating temperature of the electric heating plates is higher than the solidification temperature of the sizing liquid.
Furthermore, the top ends of the inner cavities of the first bin and the second bin adopt irregular arc-shaped structures.
Further, an access door is arranged on the outer side of the furnace body, and the access door is communicated with the inner side of the furnace body.
The beneficial effects of the utility model are as follows: according to the utility model, the radiation heating assemblies are arranged at the bottoms of the first bin and the second bin, and the gas flow guide device and the circulating air duct are used for communicating the first bin and the second bin, so that the air in the furnace body circulates to take away the reaction heat of the curing reaction, a drying mode with main radiation heating and auxiliary convection heat exchange is realized, and the hot air with low air speed is used for improving the drying efficiency of the whole drying furnace, and simultaneously taking away the moisture in the furnace body, so that the drying process environment in the furnace is kept; compared with the prior art, the utility model can reduce the damage of air convection to carbon filaments, reduce the generation of broken filaments and ensure the drying effect.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic sectional view of a drying furnace after sizing carbon fibers according to an embodiment of the present utility model;
FIG. 2 is a top view of a drying oven after sizing carbon fibers according to an embodiment of the present utility model;
FIG. 3 is a side view of a drying oven after sizing carbon fibers in accordance with an embodiment of the present utility model;
FIG. 4 is a cross-sectional view at A-A in FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 1 at A;
fig. 6 is a partial enlarged view at B in fig. 1.
Reference numerals illustrate: 01. carbon fiber tows; 10. a furnace body; 11. a first chamber; 12. a second chamber; 13. an end air seal and a flow guiding device; 14. a first gas penetrating plate; 15. a second gas penetrating plate; 16. a deflector; 17. an access door; 20. a radiant heating assembly; 21. an electric heating plate; 30. a gas flow guiding device; 31. a first flow guide; 32. a second flow guide; 33. a detachable filter device; 40. a circulating air duct; 41. a circulating fan; 42. a fresh air adjusting port; 43. a waste discharge regulating port; 44. a dehumidifier; 45. an air quantity adjusting valve; 46. a heater.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The carbon fiber sizing drying furnace shown in fig. 1-6 comprises a furnace body 10, wherein a first bin 11 and a second bin 12 are arranged in the furnace body 10, a radiation heating assembly 20 is arranged at the bottom of the first bin 11 and the bottom of the second bin 12, a gas guiding device 30 is arranged at the connecting position of the first bin 11 and the second bin 12, one end of the gas guiding device 30 is communicated with the first bin 11 and the second bin 12, and the other end of the gas guiding device 30 faces the outside of the furnace body 10;
a circulating air duct 40 is arranged outside the furnace body 10, and the other end of the gas guiding device 30 is communicated with the side surface of the circulating air duct 40; the free ends of the first bin 11 and the second bin 12 are provided with end air seals and flow guiding devices 13; the two end air seals and the flow guiding devices 13 are respectively communicated with two ends of the circulating air duct 40.
According to the utility model, the radiation heating assemblies 20 are arranged at the bottoms of the first bin 11 and the second bin 12, and the gas flow guide device 30 and the circulating air duct 40 are used for communicating the first bin 11 and the second bin 12, so that the air in the furnace body 10 circulates to take away the reaction heat of the curing reaction, a drying mode with main radiation heating and auxiliary convection heat exchange is realized, and the hot air with low air speed is used for improving the drying efficiency of the whole drying furnace, and simultaneously taking away the moisture in the furnace body 10, so that the drying process environment is kept in the furnace; compared with the prior art, the utility model can reduce the damage of air convection to carbon filaments, reduce the generation of broken filaments and ensure the drying effect.
Specifically, after the air flow in the furnace passes through the air guiding device 30, the air flow is filtered by the detachable filtering device 33, a small part of the air flow passes through the discharge adjusting port and is discharged into the waste gas collecting device through the waste gas pipeline, a large part of the air flow enters the circulating system through the circulating fan 41, a fresh air adjusting port 42 is arranged at the front end pipeline of the circulating fan 41 to supplement fresh air, so that the air quantity of the circulating system is balanced, and the air flow coming out of the circulating fan 41 is divided into two paths through the Y-shaped air pipe and respectively enters the furnace through the dehumidifier 44 and the heater 46, so that the convection heat exchange of carbon wires is realized.
As shown in fig. 6, a first flow guiding member 31 and a second flow guiding member 32 connected at the top end are disposed inside the gas guiding device 30, the first flow guiding member 31 is disposed obliquely towards the direction of the first chamber 11, the second flow guiding member 32 is disposed obliquely towards the direction of the second chamber 12, and the connection position of the first flow guiding member 31 and the second flow guiding member 32 is disposed obliquely towards the outside of the furnace body 10. The design can form symmetrical circulation paths in the first bin 11 and the second bin 12, and the drying effect is ensured.
Preferably, the inclined angle between the first guiding element 31 and the first chamber 11 is 95-120 °, and the inclined angle between the second guiding element 32 and the second chamber 12 is 95-120 °. The above angle arrangement can ensure the stability of the air flow in the air flow circulation passage, and ensure that the air passing through the air guiding device 30 can stably enter the circulation air duct 40.
As shown in fig. 5, a detachable filter device 33 is disposed between the gas guiding device 30 and the circulating air duct 40, a circulating fan 41 is connected to the other side of the circulating air duct 40 connected to the gas guiding device 30, and the circulating fan 41, the detachable filter device 33 and the gas guiding device 30 are in the same plane.
As shown in fig. 3, the circulation duct 40 is provided with a fresh air adjusting port 42 and a waste air discharging adjusting port 43, the waste air filtered by the detachable filter device 33 is discharged through the waste air discharging adjusting port 43, and the fresh air adjusting port 42 is used for supplementing air. The hot air after the high-efficiency filtration enters the circulating air duct 40 through the fresh air adjusting port 42. Here, the air used for the convective heat transfer in the present application is hot air. The yarn is prevented from being damaged by cold air, the specific air speed is about 0.5m/s, the temperature is about 200 ℃, and hot air with smaller air speed is utilized to improve the drying efficiency of the whole drying furnace, and meanwhile, the moisture in the furnace body 10 is taken away, so that the drying process environment in the furnace is kept;
as shown in fig. 2, the circulation duct 40 is provided with a dehumidifier 44, an air quantity adjusting valve 45 and a heater 46 in sequence in the pipeline facing the two end air seals and the diversion device 13. An air quantity regulating valve 45 is arranged in front of the heater 46 and is used for regulating the air quantity and the air speed of the system. The dehumidifier 44 in the circulation system removes moisture in the circulated air, which is very helpful for improving the drying efficiency of the carbon fiber, and simultaneously, the air flow in the furnace is recycled, so that the energy consumption is saved.
With continued reference to fig. 5, the end gas seal and flow guiding device 13 includes a first gas penetrating plate 14 and a second gas penetrating plate 15 disposed in parallel, and a flow guiding plate 16 disposed between the first gas penetrating plate 14 and the second gas penetrating plate 15 in an inclined manner, the flow guiding plate 16 is inclined toward the furnace body 10, one end of the flow guiding plate 16 is disposed in the middle of the first gas penetrating plate 14 to divide the first gas penetrating plate 14 into two parts, the other end of the flow guiding plate 16 is disposed at one end of the second gas penetrating plate 15 close to the furnace body 10, air holes are disposed on both the first gas penetrating plate 14 and the second gas penetrating plate 15, and the air holes of the second gas penetrating plate 15 are disposed in an inclined manner along the transferring direction of the yarns.
Preferably, the radiation heating assembly 20 is a plurality of electric heating plates 21 arranged at the bottom of the first chamber 11 and the second chamber 12, and the heating temperature of the plurality of electric heating plates 21 is greater than the curing temperature of the upper slurry. Wherein, two heating plates are a group of heating intervals, which ensures the temperature balance in the running process of the silk thread. The power of the electric heating plate 21 is adjustable, and the heating plate power is adjusted according to the process requirements, so that the heating temperature is adjusted. Different production processes can be satisfied by adjusting the power of the heating plate; in this embodiment, the curing temperature of the sizing agent is about 300 ℃, and the electric heating plate 21 with the heating temperature of 350 ℃ is selected to ensure the curing reaction of the sizing agent.
As shown in fig. 1, the top ends of the inner cavities of the first chamber 11 and the second chamber 12 adopt an irregular arc-shaped structure. Can slow down the wind speed, can not cause the injury to the carbon silk simultaneously.
As shown in fig. 3, an access door 17 is provided outside the furnace body 10, and the access door 17 communicates with the inside of the furnace body 10.
Specifically, the air pipe is provided with a pressure gauge for monitoring the system pressure and adjusting the air flow speed; a heat insulation device is adopted outside the furnace body 10; the accuracy of the pressure gauge is prevented from being influenced, and meanwhile, the heat dissipation of the furnace body 10 is prevented.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A drying furnace after sizing carbon fiber, which is characterized in that: the device comprises a furnace body, wherein a first bin and a second bin are arranged in the furnace body, a radiation heating assembly is arranged at the bottom of the first bin and the bottom of the second bin, a gas flow guiding device is arranged at the connection position of the first bin and the second bin, one end of the gas flow guiding device is communicated with the first bin and the second bin, and the other end of the gas flow guiding device faces the outside of the furnace body;
the outside of the furnace body is provided with a circulating air channel, and the other end of the gas flow guiding device is communicated with the side surface of the circulating air channel; the free ends of the first bin and the second bin are provided with end air seals and flow guiding devices; the two end air seals and the flow guiding device are respectively communicated with the two ends of the circulating air duct.
2. A post-sizing drying oven for carbon fibers as set forth in claim 1, wherein: the inside first water conservancy diversion spare and the second water conservancy diversion spare that is provided with the top and connects of gas guiding device, first water conservancy diversion spare orientation the direction slope setting of first bin, the second water conservancy diversion spare orientation the direction slope setting of second bin, first water conservancy diversion spare with the hookup location of second water conservancy diversion spare orientation the furnace body is outside.
3. A post-sizing kiln for carbon fibers as set forth in claim 2, wherein: the inclined included angle between the first flow guiding piece and the first bin is 95-120 degrees, and the inclined included angle between the second flow guiding piece and the second bin is 95-120 degrees.
4. A post-sizing drying oven for carbon fibers as set forth in claim 1, wherein: a detachable filter device is arranged between the gas guiding device and the circulating air duct, the other side of the circulating air duct connected with the gas guiding device is connected with a circulating fan, the detachable filter device and the gas guide device are in the same plane.
5. A post-sizing drying oven for carbon fibers as set forth in claim 4, wherein: the circulating air duct is provided with a fresh air adjusting port and a waste discharge adjusting port, waste gas filtered by the detachable filter device is discharged through the waste discharge adjusting port, and the fresh air adjusting port is used for supplementing air.
6. A post-sizing drying oven for carbon fibers as set forth in claim 1, wherein: the dehumidifier, the air quantity regulating valve and the heater are sequentially arranged in the pipeline of the circulating air duct, which faces the two end air seals and the flow guiding device.
7. A post-sizing drying oven for carbon fibers as set forth in claim 1, wherein: the end gas seal and flow guiding device comprises a first gas penetrating plate and a second gas penetrating plate which are arranged in parallel, and a flow guiding plate which is obliquely arranged between the first gas penetrating plate and the second gas penetrating plate, wherein the flow guiding plate is obliquely oriented to the furnace body, one end of the flow guiding plate is arranged in the middle of the first gas penetrating plate and divides the first gas penetrating plate into two parts, the other end of the flow guiding plate is arranged at one end, close to the furnace body, of the second gas penetrating plate, air holes are formed in the first gas penetrating plate and the second gas penetrating plate, and the air holes of the second gas penetrating plate are obliquely arranged along the transfer direction of yarns.
8. A post-sizing drying oven for carbon fibers as set forth in claim 1, wherein: the radiation heating component is a plurality of electric heating plates which are arranged at the bottoms of the first bin and the second bin, and the heating temperature of the electric heating plates is higher than the solidification temperature of the sizing liquid.
9. A post-sizing drying oven for carbon fibers as set forth in claim 8, wherein: the top ends of the inner cavities of the first bin and the second bin adopt irregular arc-shaped structures.
10. A post-sizing drying oven for carbon fibers as set forth in claim 8, wherein: the outside of the furnace body is provided with an access door which is communicated with the inside of the furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321812871.4U CN220295127U (en) | 2023-07-10 | 2023-07-10 | Drying furnace for carbon fiber sizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321812871.4U CN220295127U (en) | 2023-07-10 | 2023-07-10 | Drying furnace for carbon fiber sizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220295127U true CN220295127U (en) | 2024-01-05 |
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ID=89349095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321812871.4U Active CN220295127U (en) | 2023-07-10 | 2023-07-10 | Drying furnace for carbon fiber sizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220295127U (en) |
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2023
- 2023-07-10 CN CN202321812871.4U patent/CN220295127U/en active Active
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