Pre-oxidation furnace for carbon fiber production

Abstract

The utility model provides a pre-oxidation furnace for carbon fiber production, which comprises a device instrument, fixed grooves are arranged on the inner walls of the two ends of the device instrument, a feeding support frame is arranged on the inner wall of the side end of one fixed groove, a discharging support frame is arranged on the inner wall of the side end of the other fixed groove, and the feeding support frame and the discharging support frame are arranged on the inner wall of the side end of the other fixed groove. Mounting plates are arranged on the inner walls of the two ends of the device instrument, rotating pulleys are arranged on the inner walls of the tops of the feeding supporting frame, the discharging supporting frame and the mounting plates, protofilaments are arranged on the inner walls of the side ends of the rotating pulleys, an electric heating plate is arranged in the middle of the device instrument, and gas distribution base bodies are arranged in the two ends of the device instrument. According to the pre-oxidation furnace for carbon fiber production provided by the utility model, due to the arrangement of the gas shunting base body, when gas is conveyed into the pre-oxidation furnace, the situation of insufficient oxidation or excessive oxidation of a partial region of a precursor is avoided, and waste gas generated during use of the pre-oxidation furnace can be recycled. And the gas can be filtered through the filtering device arranged at the top of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of oxidation furnaces, in particular to a pre-oxidation furnace for carbon fiber production. Background Art

[0002] In the process of carbon fiber production, the pre-oxidation furnace is an important equipment, which is used to pre-oxidize polypropylene or other polymer fibers under high temperature and high pressure to transform them into carbon fiber precursors. The design and operation of the pre-oxidation furnace have an important impact on the quality and output of carbon fiber.

[0003] During use, the device usually uses a high temperature and oxygen-sufficient environment for oxidation treatment. Most common equipment gas delivery devices are fixed as a whole. During use, the gas may be unevenly distributed, which can easily lead to insufficient or excessive oxidation in some areas of the original silk, resulting in poor use effect.

[0004] Therefore, it is necessary to provide a pre-oxidation furnace for carbon fiber production to solve the above technical problems. Utility Model Content

[0005] The utility model provides a pre-oxidation furnace for carbon fiber production, which solves the problem that uneven distribution of gas may occur during use, which may easily lead to insufficient or excessive oxidation of some areas of raw silk and poor use effect.

[0006] In order to solve the above technical problems, the utility model provides a pre-oxidation furnace for carbon fiber production, comprising: an apparatus, wherein fixed grooves are arranged on the inner walls at both ends of the apparatus, a feed support frame is arranged on the inner wall of the side end of the fixed groove, and a discharge support frame is arranged on the inner wall of the other side end of the fixed groove, and mounting plates are arranged on the inner walls at both ends of the apparatus, and rotating pulleys are arranged on the inner walls of the top of the feed support frame, the discharge support frame and the mounting plate, and raw yarns are arranged on the inner wall of the side end of the rotating pulley, and an electric heating plate is arranged in the middle of the apparatus, and a fixed connection is arranged on the inner wall of the side end of the electric heating plate There is an energy output end, and gas diversion matrixes are arranged inside both ends of the device instrument, a cavity is arranged inside the middle of the gas diversion matrix, a plurality of air outlet holes are arranged on the inner wall of the side end of the cavity, an air outlet pipe is arranged on the inner wall of the side end of the air outlet hole, a mounting block is arranged on the inner wall of the side end of the gas diversion matrix, a guide plate is arranged on the inner wall of the side end of the mounting block, a connecting air pipe is arranged on the inner wall of the side end of the gas diversion matrix, a circulating bellows is arranged on the end of the connecting air pipe, a gas collecting groove is arranged on the inner wall of the middle top of the device instrument, and a connecting pipe is arranged on the middle top of the gas collecting groove.

[0007] Preferably, a support frame is provided at the bottom of the device instrument, support legs are provided at the four corners of the bottom of the support frame, and a limit stop lever is provided on the top inner wall of the support frame.

[0008] Preferably, a mounting groove is provided on the inner wall of the side end of the device instrument, a sealing baffle is rotatably connected to the mounting groove, an observation window is provided on the inner wall of the side end of the sealing baffle, and a fixing pull rod is provided on the inner wall of the side end of the sealing baffle.

[0009] Preferably, a mounting cross plate is provided on the inner wall of the side end of the device instrument, and a control cabinet is provided on the inner wall at the top of the mounting cross plate.

[0010] Preferably, connecting angle steels are provided on the inner walls at both ends of the feed support frame and the discharge support frame, and triangular support members are provided on the inner wall at the bottom of the mounting plate.

[0011] Preferably, a mounting base is provided at the bottom of the electric heating plate, and guide plates are provided on the top inner walls at both ends of the mounting base.

[0012] Preferably, a filtering device is provided at the middle top of the connecting pipe, limiting slide rails are provided on the inner walls of the side ends of the filtering device, limiting sliders are provided inside the limiting slide rails, mounting frames are provided on the inner walls of the side ends of the limiting sliders, a filter plate is provided on the middle inner wall of the mounting frame, a cover plate is provided on the inner wall of the top of the filtering device, a smoke outlet pipe is provided at the middle top of the cover plate, a protective filter cover is provided on the inner wall of the top of the smoke outlet pipe, and a supporting base is provided on the bottom inner wall of the filtering device.

[0013] Compared with the related art, the pre-oxidation furnace for carbon fiber production provided by the utility model has the following beneficial effects:

[0014] The utility model provides a pre-oxidation furnace for carbon fiber production. During use of the device, in order to improve the oxidation effect of precursor fibers, a gas diversion matrix is ​​provided to ensure that oxygen is evenly distributed in the oxidation furnace when gas is transported inside the device, thereby avoiding insufficient or excessive oxidation of some areas of the precursor fibers, thereby improving the oxidation effect of the device. The exhaust gas generated by the device when in use can be adsorbed and filtered by a filtering device provided on the top of the device, thereby reducing the impact of the exhaust gas on the environment and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a pre-oxidation furnace for carbon fiber production provided by the utility model;

[0016] Figure 2 for Figure 1 The structural schematic diagram of the circulating bellows shown;

[0017] Figure 3 for Figure 1 The structural schematic diagram of the sealing baffle shown;

[0018] Figure 4 for Figure 1 A schematic side view of a pre-oxidation furnace for carbon fiber production is shown;

[0019] Figure 5 for Figure 1 The structural schematic diagram of the rotating pulley shown;

[0020] Figure 6 for Figure 1 A schematic diagram of the structure of the gas splitter matrix shown;

[0021] Figure 7 for Figure 1 A schematic cross-sectional structure diagram of a pre-oxidation furnace for carbon fiber production is shown.

[0022] Numbers in the figure: 1. Instrument, 2. Mounting groove, 3. Rotating rod, 4. Sealing baffle, 5. Observation window, 6. Fixed pull rod, 7. Mounting cross plate, 8. Control chassis, 9. Fixed groove, 10. Support frame, 11. Support leg, 12. Limiting lever, 13. Gas collecting groove, 14. Connecting pipe, 15. Filter device, 16. Support base, 17. Limiting slide rail, 18. Limiting slider, 19. Mounting frame, 20. Filter plate, 21. Cover plate, 22. Smoke outlet Pipeline, 23. Protective filter cover, 24. Feed support frame, 25. Discharge support frame, 26. Connecting angle steel, 27. Mounting plate, 28. Rotating pulley, 29. Raw silk, 30. Mounting base, 31. Guide plate, 32. Electric heating plate, 33. Energy output end, 34. Gas diversion matrix, 35. Cavity, 36. Mounting block, 37. Guide plate, 38. Air outlet hole, 39. Air outlet pipe, 40. Connecting air pipe, 41. Circulating bellows, 42. Triangular support. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 6 , Figure 7 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a pre-oxidation furnace for carbon fiber production provided by the utility model; Figure 2 for Figure 1 The structural schematic diagram of the circulating bellows shown; Figure 3 for Figure 1 The structural schematic diagram of the sealing baffle shown; Figure 4 for Figure 1 A schematic side view of a pre-oxidation furnace for carbon fiber production is shown; Figure 5 for Figure 1 The structural schematic diagram of the rotating pulley shown; Figure 6 for Figure 1 A schematic diagram of the structure of the gas splitter matrix shown; Figure 7 for Figure 1 A cross-sectional structural diagram of a pre-oxidation furnace for carbon fiber production is shown. A pre-oxidation furnace for carbon fiber production includes: an apparatus 1, wherein the inner walls at both ends of the apparatus 1 are provided with fixed grooves 9, the inner walls at the side ends of the fixed grooves 9 are provided with a feed support frame 24, and the inner walls at the side ends of the other fixed grooves 9 are provided with a discharge support frame 25, and the inner walls at both ends of the apparatus 1 are provided with mounting plates 27, and the inner walls at the tops of the feed support frame 24, the discharge support frame 25, and the mounting plate 27 are all provided with rotating pulleys 28, and the inner walls at the side ends of the rotating pulleys 28 are provided with raw silk 29, and an electric heating plate 32 is provided in the middle of the apparatus 1, and the inner walls at the side ends of the electric heating plate 32 are fixedly connected with an energy output terminal 33, and the apparatus A gas diversion matrix 34 is provided inside both ends of the device 1, a cavity 35 is provided inside the middle of the gas diversion matrix 34, a plurality of gas outlet holes 38 are provided on the inner wall of the side end of the cavity 35, a gas outlet pipe 39 is provided on the inner wall of the side end of the gas outlet hole 38, a mounting block 36 is provided on the inner wall of the side end of the gas diversion matrix 34, a guide plate 37 is provided on the inner wall of the side end of the mounting block 36, a connecting air pipe 40 is provided on the inner wall of the side end of the gas diversion matrix 34, a circulating bellows 41 is provided on the side end of the connecting air pipe 40, a gas collecting groove 13 is provided on the inner wall of the middle top of the device instrument 1, and a connecting pipe 14 is provided on the middle top of the gas collecting groove 13.

[0025] A support frame 10 is provided at the bottom of the device instrument 1, and support legs 11 are provided at the four corners of the bottom of the support frame 10. A limit lever 12 is provided on the inner wall of the top of the support frame 10 to improve the stable supporting function of the device and prevent it from tipping over during use.

[0026] A mounting groove 2 is provided on the inner wall of the side end of the device instrument 1, and a sealing baffle 4 is rotatably connected to the mounting groove 2. An observation window 5 is provided on the inner wall of the side end of the sealing baffle 4. A fixed pull rod 6 is provided on the inner wall of the side end of the sealing baffle 4 to facilitate the staff in the later stage to clean the impurities inside the device to prevent affecting the use effect of the device.

[0027] A mounting cross plate 7 is arranged on the inner wall of the side end of the device instrument 1, and a control box 8 is arranged on the inner wall at the top of the mounting cross plate 7, so that the staff can operate and control the workpiece of the device conveniently.

[0028] The inner walls at both ends of the feed support frame 24 and the discharge support frame 25 are provided with connecting angle steels 26, and the inner wall at the bottom of the mounting plate 27 is provided with triangular support members 41 to improve the connection stability of the device workpiece and prevent loosening during use.

[0029] A mounting base 30 is provided at the bottom of the electric heating plate 32 , and guide plates 31 are provided on the top inner walls of both ends of the mounting base 30 , which can evenly distribute heat upwards and improve the use effect of the device.

[0030] A filter device 15 is provided at the top middle of the connecting pipe 14, and a limit slide rail 17 is provided on the inner wall of the side end of the filter device 15, and a limit slide block 18 is provided inside the limit slide rail 17, and a mounting frame 19 is provided on the inner wall of the side end of the limit slide block 18, and a filter plate 20 is provided on the middle inner wall of the mounting frame 19, and a cover plate 21 is provided on the inner wall at the top of the filter device 15, and a smoke outlet pipe 22 is provided at the top middle of the cover plate 21, and a protective filter cover 23 is provided on the inner wall at the top of the smoke outlet pipe 22, and a supporting base 16 is provided on the inner wall at the bottom of the filter device 15. During use of the device, the generated exhaust gas will first be discharged upward through the connecting pipe 14, and the discharged exhaust gas will first pass through the inside of the filter device 15, and then the internal filter plate 20 will absorb and filter the exhaust gas to reduce the impact of the exhaust gas on the environment, and then the protective filter cover 23 at the top of the smoke outlet pipe 22 will filter and adsorb the exhaust gas at one time to improve the practicality of the device.

[0031] The working principle of a pre-oxidation furnace for carbon fiber production provided by the utility model is as follows:

[0032] During use of the device, the raw silk 29 will enter from the feed support frame 24, and then the raw silk 29 will be transported around the rotating pulley 28. During transportation, the electric heating plate 32 will process the raw silk 29. At the same time, in order to ensure that the gas is evenly distributed in the furnace, the circulating bellows 41 will discharge oxygen into the gas diversion matrix 34. There are several gas outlet pipes 39 arranged inside the matrix. The oxygen will first pass through the guide plate 37 to evenly distribute the oxygen inside the matrix, and then be discharged through the gas outlet pipe 39 to ensure that the oxygen in the furnace is evenly distributed, avoid insufficient oxidation or excessive oxidation in some areas of the raw silk 29, and improve the oxidation effect of the device.

[0033] Compared with the related art, the pre-oxidation furnace for carbon fiber production provided by the utility model has the following beneficial effects:

[0034] During the use of the device, in order to improve the oxidation effect of the raw silk 29, a gas diversion matrix 34 is set up to ensure that oxygen is evenly distributed in the oxidation furnace when transporting gas inside the device, thereby avoiding insufficient or excessive oxidation of some areas of the raw silk 29, thereby improving the oxidation effect of the device. The exhaust gas generated by the device when in use can be adsorbed and filtered by the filter device 15 set on the top of the device, thereby reducing the impact of the exhaust gas on the environment and improving the practicability of the device.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A preoxidation furnace for carbon fiber production, characterized in that: include: The device instrument is provided with a fixed groove on the inner wall at both ends of the device instrument, a feed support frame is provided on the inner wall of the side end of the fixed groove, and a discharge support frame is provided on the inner wall of the other side end of the fixed groove. The mounting plates are provided on the inner walls at both ends of the device instrument, and rotating pulleys are provided on the inner walls of the top of the feed support frame, the discharge support frame and the mounting plate. The raw silk is provided on the inner wall of the side end of the rotating pulley, and an electric heating plate is provided in the middle of the device instrument. The energy output end is fixedly connected to the inner wall of the side end of the electric heating plate. A gas diversion matrix is ​​provided in the part, a cavity is provided in the middle of the gas diversion matrix, a plurality of air outlet holes are provided on the inner wall of the side end of the cavity, an air outlet pipe is provided on the inner wall of the side end of the air outlet hole, a mounting block is provided on the inner wall of the side end of the gas diversion matrix, a guide plate is provided on the inner wall of the side end of the mounting block, a connecting air pipe is provided on the inner wall of the side end of the gas diversion matrix, a circulating bellows is provided on the side end of the connecting air pipe, a gas collecting groove is provided on the inner wall of the middle top of the device instrument, and a connecting pipe is provided on the middle top of the gas collecting groove.

2. A pre-oxidation furnace for carbon fiber production according to claim 1, characterized in that: A support frame is arranged at the bottom of the device instrument, support legs are arranged at the four corners of the bottom of the support frame, and a limit stop lever is arranged on the inner wall of the top of the support frame.

3. A pre-oxidation furnace for carbon fiber production according to claim 1, characterized in that: The inner wall of the side end of the device instrument is provided with a mounting groove, a sealing baffle is rotatably connected to the mounting groove, an observation window is provided on the inner wall of the side end of the sealing baffle, and a fixing pull rod is provided on the inner wall of the side end of the sealing baffle.

4. A preoxidation furnace for carbon fiber production according to claim 1, characterized in that: A mounting transverse plate is arranged on the inner wall of the side end of the device instrument, and a control cabinet is arranged on the inner wall at the top of the mounting transverse plate.

5. A pre-oxidation furnace for carbon fiber production according to claim 1, characterized in that: The inner walls at both ends of the feed support frame and the discharge support frame are provided with connecting angle steels, and the inner wall at the bottom of the mounting plate is provided with triangular support members.

6. A pre-oxidation furnace for carbon fiber production according to claim 1, characterized in that: A mounting base is arranged at the bottom of the electric heating plate, and guide plates are arranged on the inner walls of the tops of both ends of the mounting base.

7. A pre-oxidation furnace for carbon fiber production according to claim 1, characterized in that: A filter device is arranged at the middle top of the connecting pipe, and limit slide rails are arranged on the inner walls of the side ends of the filter device, and limit sliders are arranged inside the limit slide rails. A mounting frame is arranged on the inner walls of the side ends of the limit sliders, and a filter plate is arranged on the middle inner wall of the mounting frame. A cover plate is arranged on the inner wall of the top of the filter device, and a smoke outlet pipe is arranged at the middle top of the cover plate. A protective filter cover is arranged on the inner wall of the top of the smoke outlet pipe, and a supporting base is arranged on the bottom inner wall of the filter device.

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