阅读说明：本技术 一种粘胶基碳毡生产用预氧化炉系统 (Pre-oxidation furnace system for producing viscose-based carbon felt ) 是由 李勇 赵会 钱扬平 于 2021-09-29 设计创作，主要内容包括：本发明涉及碳毡生产技术领域,具体揭示了一种粘胶基碳毡生产用预氧化炉系统,包括放卷滚筒、喷淋箱、喷淋装置、回收装置和三个呈串联设置的氧化炉,喷淋箱内部设置有网带传送机、滚轴传送机构、第一驱动辊、第二驱和第三驱动辊,喷淋装置包括设置于喷淋箱外部的水箱和固定于喷淋箱内部的喷淋头,回收装置包括设置于喷淋箱内壁底部的回收箱,氧化炉内部设置有导向装置和吹风装置；本发明能够调节生产过程中的张力,能够根据生产需求调节纤维毡的松紧度,抵抗生产中的自主收缩,有利于提高产品质量,三个的氧化炉可分为三个温度控制区,进而能够对氧化炉内各处的温度进行调控,有利于提高产品质量。(The invention relates to the technical field of carbon felt production, and particularly discloses a preoxidation furnace system for viscose-based carbon felt production, which comprises an unreeling roller, a spraying box, a spraying device, a recovery device and three oxidation furnaces which are arranged in series, wherein a mesh belt conveyor, a roller conveying mechanism, a first driving roller, a second driving roller and a third driving roller are arranged in the spraying box; the invention can adjust the tension in the production process, adjust the tightness of the fiber felt according to the production requirement, resist the autonomous shrinkage in the production and is beneficial to improving the product quality, and the three oxidation furnaces can be divided into three temperature control areas, so that the temperature in each part of the oxidation furnaces can be regulated and controlled, and the product quality is beneficial to improving.)

1. The utility model provides a production of viscose base carbon felt is with oxidation furnace system in advance, is oxidation furnace (16) that series connection set up including unreeling cylinder (1), spraying box (2), spray set, recovery unit and three, its characterized in that: a mesh belt conveyor (3) and a roller conveying mechanism (6) are respectively arranged at positions close to the left side and the right side inside the spraying box (2), a first driving roller (4) is arranged at a position close to the top of the left side of the mesh belt conveyor (3) inside the spraying box (2), a second driving roller (7) is arranged at a position close to the top of the right side of the roller conveying mechanism (6) inside the spraying box (2), a third driving roller (8) is arranged at a position close to the bottom of the right side inside the spraying box (2), and a first tensioning roller (5) is rotatably connected at a position close to the position between the mesh belt conveyor (3) and the roller conveying mechanism (6) inside the spraying box (2);

the spraying device comprises a water tank (9) arranged outside the spraying box (2) and a spraying head (12) fixed inside the spraying box (2), and the recovery device comprises a recovery box (14) arranged at the bottom of the inner wall of the spraying box (2);

the oxidation furnace (16) is internally provided with a guide device and a blowing device.

2. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: the spray header (12) is located the top of roller conveying mechanism (6), the centers of spray header (12), roller conveying mechanism (6) and collection box (14) are in same vertical plane, the even fixedly connected with atomizer (121) in bottom of spray header (12).

3. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: the catalyst is filled in the water tank (9), a water suction pump (10) is installed in the water tank (9), and a pipe connector (11) is installed on the side face of the water tank (9).

4. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 3, wherein: the central authorities fixedly connected with at shower head (12) top runs through inlet tube (13) at spray box (2) top, the both ends of pipe connector (11) are respectively through two bellows and suction pump (10) and inlet tube (13) intercommunication.

5. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: spray case (2) inner wall bottom and be close to position department on right side and install suction pump (15), the bottom intercommunication that bellows and collection box (14) were passed through to the mouth that draws water of suction pump (15), the delivery port of suction pump (15) runs through to the outside that sprays case (2) through the bellows.

6. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: the guiding device consists of four fourth driving rollers (17) and one second tensioning roller (18), four the fourth driving rollers (17) and the second tensioning roller (18) are distributed in the oxidation furnace (16) in an M shape, and the second tensioning roller (18) is arranged at the central position between the four first driving rollers (4).

7. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: the blowing device comprises a porous plate (19) arranged at the top and the bottom of the inner wall of the oxidation furnace (16), and one side, far away from the center of the oxidation furnace (16), of the porous plate (19) is fixedly connected with a heating device penetrating through the outer side of the oxidation furnace (16).

8. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 7, wherein: the heating device comprises a heating pipeline (20), a circulating fan (21) and a heater (22) are installed inside the heating pipeline (20), a fresh air replenishing pipe (23) is fixedly connected to the position, close to the position between the circulating fan (21) and the heater (22), of the heating pipeline (20), and an upper exhaust pipe (25) and a lower exhaust pipe (24) are fixedly connected to one side of the top of the oxidation furnace (16) and the other side of the bottom of the oxidation furnace respectively.

9. The pre-oxidation furnace system for producing the viscose-based carbon felt according to claim 1, wherein: and a heat insulation material (26) is arranged in the oxidation furnace (16).

Technical Field

The invention relates to the technical field of carbon felt production, and particularly relates to a preoxidation furnace system for producing viscose-based carbon felt.

Background

In the process of actually producing the viscose-based carbon fiber, the total shrinkage rate of pre-oxidation, low-temperature carbonization and high-temperature carbonization is 25-28%. Therefore, the application of tension draft can control the shrinkage rate, and it cannot be allowed to freely shrink in a relaxed state. Otherwise, the fiber is in a loose form without strength, and the high-strength viscose-based carbon fiber cannot be obtained.

The theoretical carbonization yield of the viscose-based carbon fiber is 44.44%, the theoretical carbonization yield is only about 20% in the actual production, and the rest carbon is discharged by waste gases such as tar, levorotatory glucose, carbon monoxide, carbon dioxide and the like, so how to improve the carbonization yield and reduce the generation of carbon-containing byproducts such as tar, levorotatory glucose and the like is a technical problem in the production.

The rollers of the pre-oxidation furnace are arranged at two ends of the furnace, the fiber or the fiber felt is Z-shaped inside and reciprocates back and forth, the fiber felt is generally a fiber needling process of 40-100 mm chopped fibers, the tensile strength is inferior to that of filament fibers, if the fiber felt moves in a Z shape, the fiber felt is easy to droop due to self weight, transmission is carried out by means of a mesh belt, the mesh belt rubs the surface of the fiber, the carbon felt is poor in appearance and easy to scrape hair, the roller moves in a Z-shaped arrangement, 180-degree corners are formed in the reciprocating process of the rollers, creases are left at the corners of the carbon felt, and product performance is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a preoxidation furnace system for producing viscose-based carbon felt, which has the advantages of high carbonization efficiency, material damage prevention and the like, and solves the problem that the appearance and performance of a product are influenced by the traditional processing mode.

The invention discloses a preoxidation furnace system for producing viscose-based carbon felt, which comprises an unreeling roller, a spraying box, a spraying device, a recovery device and three oxidation furnaces which are arranged in series, wherein a mesh belt conveyor and a roller conveying mechanism are respectively arranged at positions close to the left side and the right side in the spraying box, a first driving roller is arranged at a position close to the left side top of the mesh belt conveyor in the spraying box, a second driving roller is arranged at a position close to the right side top of the roller conveying mechanism in the spraying box, a third driving roller is arranged at a position close to the right side bottom in the spraying box, a first tensioning roller is rotatably connected at a position close to the space between the mesh belt conveyor and the roller conveying mechanism in the spraying box, the spraying device comprises a water tank arranged outside the spraying box and a spraying head fixed in the spraying box, and the recovery device comprises a recovery box arranged at the bottom of the inner wall of the spraying box, and a guide device and a blowing device are arranged in the oxidation furnace.

Through the design of the technical scheme, the tension in the production process can be adjusted, the tightness of the fiber felt can be adjusted according to production requirements, autonomous shrinkage in production is resisted, and the product quality is favorably improved.

As a further improvement of the invention, the spray header is positioned at the top of the roller conveying mechanism, the centers of the spray header, the roller conveying mechanism and the recovery box are positioned on the same vertical plane, and the bottom of the spray header is uniformly and fixedly connected with the atomizing nozzles.

Through the design of the technical scheme, the catalyst in the water tank can be sprayed to the surface of the fibrofelt through the atomizing nozzle, the spraying area of the catalyst is increased, the pre-oxidation time can be shortened, the generation of tar, levorotatory glucose and the like is reduced, and the subsequent carbonization yield is increased.

As a further improvement of the invention, the inside of the water tank is filled with catalyst, the inside of the water tank is provided with a water suction pump, and the side surface of the water tank is provided with a pipe connector.

As a further improvement of the invention, the center of the top of the spray header is fixedly connected with a water inlet pipe penetrating through the top of the spray box, and two ends of the pipe connector are respectively communicated with the water suction pump and the water inlet pipe through two corrugated pipes.

Through the design of the technical scheme, the water suction pump and the spray header are connected conveniently by a worker through the pipe connector.

As a further improvement of the invention, a suction pump is arranged at the bottom of the inner wall of the spraying box and close to the right side, a water pumping port of the suction pump is communicated with the bottom of the recovery box through a corrugated pipe, and a water outlet of the suction pump penetrates through the outer part of the spraying box through the corrugated pipe.

Through the design of the technical scheme, redundant catalyst can be recovered in the spraying process, the diffusion and the permeation of the catalyst to the original felt are enhanced, the loss of fog liquid is reduced, and the using amount is saved.

As a further improvement of the present invention, the guiding device is composed of four fourth driving rollers and one second tension roller, wherein the four fourth driving rollers and the one second tension roller are distributed in the oxidation furnace in an "M" shape, and the second tension roller is arranged at the central position between the four first driving rollers.

Through the design of the technical scheme, the mesh belt can be not used for transmission in the oxidation furnace by means of elevation and smaller corners, so that the abrasion of the mesh belt and the abrasion of a fiber felt are reduced, and the product quality is improved.

As a further improvement of the invention, the blowing device comprises perforated plates arranged at the top and the bottom of the inner wall of the oxidation furnace, and a heating device penetrating through the outer side of the oxidation furnace is fixedly connected to one side of the perforated plates away from the center of the oxidation furnace.

Through the design of the technical scheme, air can be simultaneously supplied from top to bottom and from bottom to top, and the uniform air speed is realized through the aperture partition of the perforated plate, so that the uniformity of temperature and temperature, the uniformity of air speed and air speed are ensured.

As a further improvement of the invention, the heating device comprises a heating pipeline, a circulating fan and a heater are arranged in the heating pipeline, a fresh air replenishing pipe is fixedly connected to the position, close to the position between the circulating fan and the heater, of the heating pipeline, and an upper exhaust pipe and a lower exhaust pipe are respectively and fixedly connected to one side of the top of the oxidation furnace and the other side of the bottom of the oxidation furnace.

As a further improvement of the invention, a heat insulating material is arranged in the oxidation furnace.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the spraying device arranged on the spraying box is matched with the spraying device consisting of the spraying box, the water suction pump, the spraying head and the atomizing nozzle, so that when the fibrofelt passes through the roller conveying mechanism, the catalyst in the water tank can be sprayed onto the surface of the fibrofelt through the atomizing nozzle, the spraying area of the catalyst is increased, the pre-oxidation time can be shortened, the generation of tar, levoglucose and the like can be reduced, and the subsequent carbonization yield is increased.

2. According to the invention, through the arranged recovery box and the suction pump, redundant catalyst can be recovered in the spraying process, so that the diffusion and permeation of the catalyst to the original felt are enhanced, the loss of fog liquid is reduced, and the using amount is saved.

3. According to the invention, the first tensioning roller arranged in the spraying box is matched with the plurality of second tensioning rollers arranged in the oxidation furnace, so that the tension in the production process can be adjusted, the tightness of the fiber felt can be adjusted according to the production requirement, and the autonomous shrinkage in the production can be resisted.

4. According to the invention, the perforated plate is arranged in the oxidation furnace, air is simultaneously supplied from top to bottom and from bottom to top, and the uniform air speed is realized through the aperture partition of the perforated plate, so that the uniformity of temperature and temperature, and the uniformity of air speed and air speed are ensured.

5. The guide devices distributed in an M shape in the oxidation furnace can be used for transmission in the oxidation furnace without a mesh belt by means of elevation and smaller corners, so that the friction force is reduced, the abrasion of the fiber felt is reduced, and the product quality is improved.

6. The three oxidation furnaces can be divided into three temperature control areas, so that the temperature of each part in the oxidation furnaces can be regulated and controlled, and the product quality is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic sectional view of the entire front side of the present invention;

FIG. 2 is a schematic view of the working process of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is a schematic top sectional view of an oxidation furnace according to the present invention.

In the figure: 1. unwinding the roller; 2. a spray box; 3. a mesh belt conveyor; 4. a first driving roller; 5. a first tension roller; 6. a roller conveying mechanism; 7. a second driving roller; 8. a third drive roller; 9. a water tank; 10. A water pump; 11. a pipe connector; 12. a shower head; 121. an atomizing spray head; 13. a water inlet pipe; 14. a recycling bin; 15. a suction pump; 16. an oxidation furnace; 17. a fourth drive roller; 18. a second tension roller; 19. a perforated plate; 20. heating the pipeline; 21. a circulating fan; 22. a heater; 23. a fresh air supplement pipe; 24. a lower exhaust pipe; 25. an upper exhaust pipe; 26. and (4) a heat-insulating material.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments of the invention. It should be understood, however, that these physical details should not be construed as limiting the invention. That is, in some embodiments of the invention, such physical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

Technical solutions between various embodiments may be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-3, the preoxidation furnace system for producing viscose-based carbon felt of the invention comprises an unreeling roller 1, a spraying box 2, a spraying device, a recovery device and three oxidation furnaces 16 which are arranged in series, wherein a mesh belt conveyor 3 and a roller conveying mechanism 6 are respectively arranged in the spraying box 2 and close to the left and right sides, a first driving roller 4 is arranged in the spraying box 2 and close to the top of the left side of the mesh belt conveyor 3, a second driving roller 7 is arranged in the spraying box 2 and close to the top of the right side of the roller conveying mechanism 6, a third driving roller 8 is arranged in the spraying box 2 and close to the bottom of the right side, a first tensioning roller 5 is rotatably connected in the spraying box 2 and close to the position between the mesh belt conveyor 3 and the roller conveying mechanism 6, the spraying device comprises a water tank 9 arranged outside the spraying box 2 and a spraying head 12 fixed in the spraying box 2, the recovery unit is including setting up in the collection box 14 of 2 inner wall bottoms of spray box, the inside guider and the blast apparatus that are provided with of oxidation furnace 16 can adjust the tension in the production process, can adjust the elasticity of fibrofelt according to the production demand, resists the autonomic shrink in the production, is favorable to improving product quality.

Referring to fig. 3, the spray header 12 is located at the top of the roller conveying mechanism 6, the centers of the spray header 12, the roller conveying mechanism 6 and the recycling bin 14 are located on the same vertical plane, and the bottom of the spray header 12 is uniformly and fixedly connected with the atomizing nozzles 121, so that the catalyst in the water tank 9 can be sprayed onto the surface of the fibrofelt through the atomizing nozzles 121, the spraying area of the catalyst is increased, the pre-oxidation time can be shortened, the generation of tar, levoglucose and the like can be reduced, and the subsequent carbonization yield can be increased.

Referring to fig. 1, a catalyst is filled in a water tank 9, a water pump 10 is installed in the water tank 9, a pipe connector 11 is installed on the side surface of the water tank 9, a water inlet pipe 13 penetrating the top of the spray tank 2 is fixedly connected to the center of the top of the spray header 12, and two ends of the pipe connector 11 are respectively communicated with the water pump 10 and the water inlet pipe 13 through two corrugated pipes, so that a worker can conveniently connect the water pump 10 and the spray header 12 through the pipe connector 11.

Referring to fig. 1, a suction pump 15 is installed at a position close to the right side and at the bottom of the inner wall of the spraying box 2, a water pumping port of the suction pump 15 is communicated with the bottom of the recovery box 14 through a corrugated pipe, and a water outlet of the suction pump 15 penetrates through the outside of the spraying box 2 through the corrugated pipe, so that redundant catalyst can be recovered in the spraying process, the diffusion and the permeation of the catalyst to the original felt are enhanced, the loss of mist is reduced, and the using amount is saved.

Referring to fig. 1, the guide means is composed of four fourth driving rollers 17 and one second tension roller 18, the four fourth driving rollers 17 and the one second tension roller 18 are distributed in the inside of the oxidation furnace 16 in an "M" shape, the second tension roller 18 is disposed at a central position between the four first driving rollers 4, and by means of elevation and smaller corners, the air blowing device comprises a perforated plate 19 arranged at the top and the bottom of the inner wall of the oxidation furnace 16, one side of the perforated plate 19 far away from the center of the oxidation furnace 16 is fixedly connected with a heating device penetrating through the outer side of the oxidation furnace 16, and can simultaneously blow air from top to bottom and from bottom to top, the uniform wind speed is realized by the aperture partition of the perforated plate, and the uniformity of temperature and temperature, and the uniformity of wind speed and wind speed are ensured.

Referring to fig. 4, the heating device includes a heating pipeline 20, a circulation fan 21 and a heater 22 are installed inside the heating pipeline 20, a fresh air supplement pipe 23 is fixedly connected to a position of the heating pipeline 20 close to a position between the circulation fan 21 and the heater 22, an upper exhaust pipe 25 and a lower exhaust pipe 24 are respectively and fixedly connected to one side of the top and the other side of the bottom of the oxidation furnace 16, and a heat insulating material 26 is installed in the oxidation furnace 16.

The working principle is as follows: the fiber felt enters the spraying box 2 and the oxidation furnace 16 through the unreeling roller 1 and moves along the mesh belt conveyor 3, the first tensioning roller 5, the roller conveying mechanism 6, the third driving roller and the guiding device, the fiber felt is firstly wetted by the catalyst sprayed by the atomizing spray heads 121 in the moving process, the redundant catalyst falls into the recovery box 14 and is sucked away by the suction pump 15, then the fiber felt moves along the guiding device in the oxidation furnace 16, and the fiber felt is heated by wind blown out by the perforated plates 19 in the moving process.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.