Cleaning device for carbide furnace

Abstract

The utility model discloses a cleaning device of a carbonization furnace, which is suitable for cleaning a tow running channel in the carbonization furnace, the cleaning device comprises a guide assembly and cleaning units, the guide assembly is composed of two guide units which are arranged at an interval and have extension length, and a plurality of cleaning units are arranged between the two guide units. And the cleaning unit is guided by the guide unit to effectively clean the tow running channel, so that the smoothness of the tow running channel is ensured, and the working efficiency of the carbide furnace is improved.

Description

Technical Field

[0001] The utility model is applied to the field of carbon fiber production, and particularly relates to a cleaning device for a carbonization furnace. Background Art

[0002] Carbonization furnaces are equipment used for high-temperature material processing and are widely used in carbon fiber production. During the carbonization process, the tow continuously moves along the tow path. High temperatures in the tow easily generate carbonized debris and impurities, which can accumulate in the tow path, affecting normal tow operation and even causing tow breakage or reduced carbonization performance. Therefore, regular cleaning of the tow path within the carbonization furnace is crucial to ensuring production efficiency and product quality.

[0003] In the existing technology, cleaning work usually needs to be carried out when the equipment is shut down, which affects the continuity and efficiency of production. In addition, traditional cleaning methods have the problem of incomplete cleaning, which easily leads to impurities remaining, thus affecting the long-term use of the carbonization furnace.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model discloses a cleaning device for a carbonization furnace, which can be used to clean the carbonization furnace during normal operation, thereby reducing production interruptions caused by stopping the furnace for cleaning. Through the design of a guide unit and a cleaning unit, the cleaning device can effectively remove impurities in the tow running channel, ensuring the continuity and stability of the carbonization process while improving cleaning efficiency.

[0006] To achieve the above object, the utility model discloses a cleaning device for a carbonization furnace, wherein the carbonization furnace has a tow running channel running along the tow direction, and the cleaning device cleans the running tow running channel, comprising:

[0007] A guide assembly, the guide assembly comprising two guide units spaced apart and having an extended length;

[0008] A cleaning unit, wherein a plurality of cleaning units are arranged between the two guide units;

[0009] The cleaning unit cleans the tow running channel under the guidance of the guiding unit.

[0010] Optionally, the guide unit is a carbon rope woven from a plurality of carbon fiber filaments;

[0011] The diameter of the guide unit is smaller than the height of the accommodating space.

[0012] Optionally, the cleaning unit is a carbon rope woven from a plurality of carbon fiber filaments;

[0013] The diameter of the cleaning unit is adapted to the height of the accommodating space.

[0014] Optionally, the cleaning unit is fixed to the guiding unit by weaving;

[0015] Preferably, the number of braids of the cleaning unit on the guide unit is 10-14;

[0016] Preferably, the cleaning units are arranged at a spacing of 30 cm on the guide unit.

[0017] Optionally, traction units are provided on both sides of the yarn tow running channel, and the running direction of the traction units is consistent with that of the yarn tow;

[0018] The guide unit includes a first end and a second end;

[0019] The two traction units are detachably connected to the first ends of the two guide units respectively;

[0020] The traction unit generates a first traction force to pull the guide unit to move in the tow running channel.

[0021] Optionally, it further comprises a second traction unit, which is independently arranged from the tow running channel.

[0022] The two second traction units are detachably connected to the second ends of the two guide units respectively; and generate at least a second traction force in a direction opposite to that of the traction unit;

[0023] The second traction force is smaller than the first traction force.

[0024] Optionally, the second traction force also generates a repulsive force on the two guiding units.

[0025] A second aspect of the present invention discloses a carbonization furnace cleaning method using the carbonization furnace cleaning device, comprising:

[0026] Ready to work state: connect one end of the guide unit in the guide assembly to the traction unit;

[0027] Working state: the traction unit pulls the guide unit in the tow running channel, and the multiple cleaning units located between the two guides clean the tow running channel.

[0028] Optionally, the ready-to-work state includes: the traction unit is connected to the first end of the guide unit to generate a first force in the same direction as the running direction of the tow;

[0029] The second traction unit is connected to the second end of the guide unit to generate a second traction force, and the second traction force cooperates with the first traction force to straighten the guide unit;

[0030] Preferably, the second traction force also straightens the cleaning unit.

[0031] Optionally, the carbonization furnace includes a detection device, which detects impurities in the tow running channel;

[0032] In the assembled state, the connection quantity and density of the cleaning unit on the guide unit are adjusted according to the impurity content in the tow running channel.

[0033] The utility model has at least the following beneficial effects:

[0034] 1. The utility model can significantly reduce the time required for cleaning due to shutdown by cleaning during the working process of the carbonization furnace, thereby maintaining the continuity of the production line and improving the overall production efficiency.

[0035] 2. By cleaning impurities during operation, the production cycle of the carbonization furnace can be extended, enabling it to maintain a stable production state for a longer period of time, thereby increasing production.

[0036] 3. The method of cleaning during work reduces the downtime caused by traditional shutdown cleaning, reduces the frequency of production interruptions and downtime costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0038] In the attached figure:

[0039] Figure 1 This is a schematic structural diagram of the cleaning device of the present invention;

[0040] Figure 2 This is a schematic diagram of the coordination between the cleaning unit and the tow running channel of the present invention;

[0041] Figure 3 This is a schematic diagram of a cooperation mode between the second traction unit, the cleaning unit and the tow running channel of the present invention;

[0042] Figure 4 This is a schematic diagram of another coordination mode between the second traction unit, the cleaning unit and the tow running channel of the present invention.

[0043] 1. Tow running channel; 11. Traction unit; 2. Cleaning device; 21. Guide unit; 22. Cleaning unit; 3. Second traction unit.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0048] A carbonization furnace is a device used to heat raw materials (such as polyacrylonitrile precursor) to high temperatures and perform a carbonization process in an inert gas or vacuum environment. Its primary function is to remove non-carbon components from organic materials through high temperatures, ultimately producing carbon fibers or other carbon-based materials primarily composed of carbon. The operating temperature of a carbonization furnace typically exceeds 1000°C, so the atmosphere within the furnace must be strictly controlled to prevent the ingress of outside air and avoid oxidation reactions. To achieve this, the sealing device is a crucial component of the carbonization furnace. It ensures that the inert gas environment within the furnace is not disturbed by external air and prevents exhaust gases from leaking into the environment.

[0049] Sealing devices maintain airtightness and a stable environment within the carbonization furnace. These devices are typically located at the furnace door, pipe connections, and air intake and exhaust systems. They utilize components such as high-temperature sealing strips and O-rings to isolate the interior of the carbonization furnace from the outside world. The stability of the furnace atmosphere is crucial to carbon fiber quality control. Any leaks or failures in the sealing devices can lead to oxygen infiltration, compromising product quality. Therefore, the design and maintenance of sealing devices are crucial to the proper operation of the carbonization furnace.

[0050] Tow channel 1 is the section of the carbonization furnace specifically used to transport carbon fiber precursors. The precursors pass through this channel and undergo carbonization at high temperatures. The channel's design ensures uniform heating of the precursors, while the inert gas atmosphere prevents the ingress of external oxygen, preventing oxidation. The sealing performance of tow channel 1 is closely linked to the overall sealing mechanism of the carbonization furnace. Maintaining a stable inert atmosphere within the channel has a direct impact on product quality.

[0051] During the carbon fiber production process, a large amount of waste gas, tar, carbon residue and other by-products will be generated in the tow running channel 1. These impurities will accumulate in the channel and affect the smooth operation of the tow. Therefore, it is very important to clean the tow running channel 1, which mainly includes the following aspects: First, the cleaning of waste gas and tar is crucial because they are easy to condense on the channel surface and block the channel. Secondly, the cleaning of carbon residue can prevent the residue from rubbing and damaging the tow, affecting the quality of the carbon fiber. Thirdly, the cleaning of the sealing parts can ensure that the gas does not leak and maintain a stable atmosphere in the channel. Finally, the cleaning of silicides and other deposits can ensure uniform temperature distribution in the channel to prevent adverse effects on the carbonization process.

[0052] In short, the tow channel 1 is an important component of the carbonization furnace. It works together with the sealing device to ensure the stability of the atmosphere and temperature during the carbonization process. Regularly cleaning impurities in the tow channel 1 can ensure production continuity and product quality, while also extending the service life of the equipment.

[0053] Carbon fiber production mainly uses polyacrylonitrile precursor. During the production process, waste gas, tar and silicate will accumulate in the tow running channel 1, seriously affecting the production quality, and regular furnace shutdown for cleaning is required.

[0054] Typically, carbonization furnaces require periodic shutdown to clean the tow channel 1 to prevent impurity accumulation that could impact production quality and efficiency. The cleaning device 2 described in the present invention cleans the tow channel 1 during the carbonization furnace's operation. This not only extends the production cycle but also significantly reduces the time wasted due to shutdowns for cleaning. This maintains production line continuity and improves overall production efficiency.

[0055] like Figures 1 to 4 As shown, the present invention discloses a cleaning device 2 for a carbonization furnace. The cleaning device 2 can clean the fiber bundle running channel 1 of the carbonization furnace during the fiber bundle running process, thereby improving the cleaning efficiency and reducing the downtime. The cleaning device 2 includes a guide assembly and a cleaning unit 22. The specific structure is as follows:

[0056] The guide assembly includes two spaced-apart guide units 21, which are arranged parallel to and extend along the tow passage 1. Each guide unit 21 is used to guide the movement of the cleaning unit 22 within the tow passage 1, ensuring that the cleaning unit 22 can effectively contact impurities within the passage.

[0057] Multiple cleaning units 22 are positioned between the two guide units 21 and are movable along the tow passage 1. These cleaning units 22 are made of a high-temperature-resistant, flexible material, such as high-temperature-resistant fiber or composite material, to ensure that the running tow is not damaged during the cleaning process. The bottom of each cleaning unit contacts the inner wall of the tow passage 1, effectively removing carbonized debris and impurities within the passage.

[0058] During the cleaning operation, the cleaning unit 22 moves within the tow running channel 1 under the guidance of the guide unit 21, contacts the inner wall of the tow running channel 1, and cleans the accumulated impurities in the tow running channel 1. Since the cleaning device 2 can clean during the normal operation of the carbonization furnace, the production interruption caused by stopping the machine for cleaning is reduced, and the continuity and efficiency of production are improved.

[0059] Furthermore, the guide unit 21 is a carbon rope woven from a plurality of carbon fiber filaments. The diameter of the guide unit 21 is smaller than the height of the accommodation space.

[0060] The guide assembly includes two carbon rope guide units 21 woven from carbon fiber filaments. These carbon rope guide units 21 are arranged parallel to the tow running channel 1 and have sufficient extension length to guide the movement of the cleaning unit 22 within the tow running channel 1. The diameter of the carbon rope is smaller than the height of the accommodation space to accommodate the space constraints within the channel.

[0061] The carbon rope is woven from multiple carbon fiber filaments and has excellent high-temperature resistance and strength, making it suitable for the high-temperature environment of the carbonization furnace. The carbon rope's flexibility and wear resistance ensure that it can effectively guide the cleaning unit 22 and maintain stable performance under high-temperature conditions.

[0062] Furthermore, the cleaning unit 22 is a carbon rope woven from a plurality of carbon fiber filaments. The diameter of the cleaning unit 22 is adapted to the height of the accommodation space to ensure that the impurities in the channel can be effectively contacted and removed during the cleaning process.

[0063] The carbon rope cleaning unit 22 is woven from carbon fiber filaments. Carbon fiber has excellent high-temperature resistance and strength, making it suitable for use in high-temperature carbonization furnaces. The diameter of the carbon ropes is tailored to the height of the housing, ensuring that the cleaning unit 22 can move freely within the tow channel 1 while fully maximizing its cleaning function. The carbon rope diameter is designed to fit snugly against the channel's inner walls, effectively removing accumulated impurities.

[0064] Furthermore, the cleaning unit 22 is fixed to the guide unit 21 by weaving, wherein the cleaning unit 22 and the guide unit 21 are fixed together by weaving to ensure the stability and cleaning effect of the cleaning process.

[0065] Specifically, the carbon fiber filaments of the cleaning unit 22 and the guide unit 21 are interwoven during manufacture, forming a single, integrated structure. This securement ensures that the cleaning unit 22 does not escape the control of the guide unit 21 during the cleaning process, while also ensuring that the cleaning unit 22 can accurately follow the guide unit 21 to the predetermined cleaning position.

[0066] Preferably, the number of braids of the cleaning unit 22 on the guide unit 21 is 10-14. This braiding density ensures that the cleaning unit 22 is firmly fixed on the guide unit 21 and provides sufficient contact area to improve the cleaning effect.

[0067] Preferably, the cleaning units 22 are spaced 30 cm apart on the guide unit 21. This spacing ensures that the cleaning units 22 can cover a wide area within the channel while preventing possible blockage or excessive overlap during the cleaning process. The 30 cm spacing effectively removes impurities from the channel without interfering with other components within the channel.

[0068] like Figure 2 As shown, traction units 11 are respectively provided on both sides of the yarn bundle running channel 1, and the traction units 11 are consistent with the running direction of the yarn bundle.

[0069] The traction unit 11 is further described as follows: the traction unit 11 is two carbon ropes reserved on both sides of the filament tow running channel 1 .

[0070] The guide unit 21 includes a first end and a second end. The two traction units 11 are detachably connected to the first ends of the two guide units 21. The traction units 11 generate a first traction force to pull the guide units 21 to move in the tow running channel 1.

[0071] During the cleaning process, the traction force generated by the traction unit 11 pulls the guide unit 21 along the tow's travel direction within the tow channel 1. The cleaning unit 22 is braided and fixed to the guide unit 21. As the guide unit 21 moves, it efficiently removes impurities from the channel. The detachable connection design allows the traction unit 11 to be easily connected and disconnected from the guide unit 21, facilitating subsequent maintenance and replacement. This design ensures stability during the cleaning process and operational flexibility.

[0072] like Figure 3 As shown, it also includes a second traction unit 3, which is set independently of the tow running channel 1.

[0073] The two second traction units 3 are detachably connected to the second ends of the two guide units 21 respectively; at least a second traction force is generated in the opposite direction to the traction unit 11; and the second traction force is smaller than the first traction force.

[0074] During the cleaning process, the traction force generated by the traction unit 11 pulls the guide unit 21 along the tow's travel direction within the tow's travel path 1. Simultaneously, the second traction unit 3 generates a second traction force in the opposite direction of the traction force of the traction unit 11, which primarily serves to straighten the guide unit 21 and prevent it from bending or deforming during movement. This arrangement ensures that the guide unit 21 maintains appropriate tension, allowing the cleaning unit 22 to perform cleaning operations stably and efficiently.

[0075] The design of the second pulling force being less than the first pulling force ensures that the moving direction of the cleaning device 2 remains unchanged while maintaining the stability of the guide unit 21, thereby improving the efficiency and reliability of cleaning. The guide unit 21 and the cleaning unit 22 are connected by a braided fixed connection. When the guide unit 21 moves within the tow running channel 1, the cleaning unit 22 can effectively remove impurities.

[0076] Furthermore, the second traction force also generates a repulsive force on the two guiding units 21 .

[0077] During the cleaning process, the traction force generated by the traction unit 11 pulls the guide unit 21 within the tow passage 1. Simultaneously, the secondary traction force generated by the second traction unit 3 straightens the guide unit 21 and the cleaning unit 22 through two directional force components, ensuring that the cleaning device 2 remains stable and efficient during operation. This design optimizes the performance of the cleaning device 2, enabling it to provide a stable cleaning effect during operation.

[0078] The second traction unit 3 is arranged in the inlet direction of the carbonization furnace and is spaced apart from the inlet of the carbonization furnace. The spacing between the two second traction units 3 is greater than the spacing between the two guide units 21. The two traction units 11 are respectively connected to the second ends of the two guide units 21 to generate a force opposite to the moving direction of the guide unit 21 for tightening the guide unit 21.

[0079] Furthermore, since the distance between the two second traction units 3 is greater than the distance between the two guide units 21 , the force-clearing unit located between the two second guide units 21 is also tightened.

[0080] As a specific implementation of this embodiment, the second traction unit 3 can be a rotating shaft with a spring, and the second end of the guide unit 21 is wound on the rotating shaft. As the traction unit 11 pulls the first end, the second end of the guide unit 21 gradually moves away from the second traction unit 3, and the spring generates a second force to tighten the guide unit 21 and the cleaning unit 22.

[0081] As another specific implementation of this embodiment, an operator manually tightens the second end of the guide unit 21 to generate the necessary traction force. While this method requires manual operation, it provides flexibility in certain situations and allows the traction force to be adjusted to meet actual needs. Manual traction also effectively tightens the guide unit 21 and cleaning unit 22, ensuring their stability and effectiveness during the cleaning process.

[0082] The utility model also discloses a cleaning method using the cleaning device 2 of the carbonization furnace, comprising:

[0083] Ready to work state: connect one end of the guide unit 21 in the guide assembly to the traction unit 11;

[0084] Working state: the traction unit 11 pulls the guide unit 21 in the tow running channel 1, and the multiple cleaning units 22 located between the two guides clean the tow running channel 1.

[0085] Before cleaning begins, one end of the guide unit 21 is connected to the traction unit 11. This connection preparation enables the traction unit 11 to generate traction, thereby getting ready for entering a working state.

[0086] In the working state, the traction unit 11 pulls the guide unit 21 to move along the tow running channel 1. At this time, the multiple cleaning units 22 located between the two guide units 21 clean the tow running channel 1 to ensure that impurities in the channel are effectively removed.

[0087] Furthermore, the ready-to-work state includes: the traction unit 11 is connected to the first end of the guide unit 21 to generate a first force in the same direction as the running direction of the tow.

[0088] The second traction unit 3 is connected to the second end of the guide unit 21 to generate a second traction force, and the second traction force cooperates with the first traction force to straighten the guide unit 21.

[0089] In the standby state, the traction unit 11 is connected to the first end of the guide unit 21, generating a first force in the same direction as the tow's travel, pulling the guide unit 21 in that direction. Simultaneously, the second traction unit 3 is connected to the second end of the guide unit 21, generating a second traction force. This second traction force is in the opposite direction of the first traction force and cooperates with the first traction force to ensure that the guide unit 21 remains straight within the tow's travel path 1.

[0090] Preferably, the second traction force also straightens the cleaning unit 22 .

[0091] The second pulling force not only straightens the guide unit 21 but also has a dual effect: one component of the second pulling force, in the opposite direction of the first pulling force, straightens the guide unit 21; the other component of the second pulling force acts directly on the cleaning unit 22, straightening it. This dual effect ensures that both the guide unit 21 and the cleaning unit 22 maintain stable tension within the tow passage 1, thereby optimizing the cleaning effect.

[0092] like Figure 3 As shown, the first pulling force of the traction unit 11 also straightens the cleaning unit 22. In addition to guiding the guide unit 21 to move along the tow running channel 1, the first pulling force also generates a force that moves the two traction units 11 away from the adjacent traction units 11. As the traction units 11 move along the tow running channel 1, one side of the cleaning unit 11, which was initially straightened by the second pulling force, becomes straightened by the first pulling force, further ensuring the cleaning effect of the cleaning unit 11.

[0093] Furthermore, the carbonization furnace includes a detection device, which detects impurities in the accommodation space. The detection device can accurately evaluate the amount of impurities in the accommodation space to provide necessary feedback information.

[0094] In the assembled state, the number and density of connections of the cleaning units 22 on the guide units 21 are adjusted according to the impurity content in the accommodating space.

[0095] Specifically, the number and density of the cleaning units 22 connected to the guide unit 21 are adjusted according to the impurity content in the accommodation space. By increasing or decreasing the number of cleaning units 22 and their distribution density on the guide unit 21, the effectiveness and efficiency of the cleaning units 22 during the cleaning process can be ensured, thereby achieving the best cleaning effect.

[0096] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A cleaning device for a carbonization furnace, wherein the carbonization furnace has a tow running channel running along the tow direction, and the cleaning device cleans the running tow running channel, characterized in that: include, A guide assembly, the guide assembly comprising two guide units (21) spaced apart and having an extended length; A cleaning unit (22), wherein a plurality of cleaning units (22) are arranged between the two guide units (21); The cleaning unit (22) cleans the tow running channel (1) under the guidance of the guiding unit (21).

2. A cleaning device for a carbonization furnace according to claim 1, characterized in that: The guide unit (21) is a carbon rope woven from a plurality of carbon fiber filaments; The diameter of the guide unit (21) is smaller than the height of the accommodation space.

3. The cleaning device for a carbonization furnace according to claim 1, characterized in that: The cleaning unit (22) is a carbon rope woven from a plurality of carbon fiber filaments; The diameter of the cleaning unit (22) is adapted to the height of the accommodating space.

4. A cleaning device for a carbonization furnace according to claim 2 or 3, characterized in that: The cleaning unit (22) is braided and fixed to the guiding unit (21).

5. A cleaning device for a carbonization furnace according to claim 4, characterized in that: The number of weaving threads of the cleaning unit (22) on the guide unit (21) is 10-14.

6. A cleaning device for a carbonization furnace according to claim 5, characterized in that: The cleaning units (22) are arranged at a distance of 30 cm on the guide unit (21).

7. A cleaning device for a carbonization furnace according to claim 1, 2, 3, 5 or 6, characterized in that: The two guide units (21) are arranged in parallel along the direction of the yarn bundle running channel (1).

8. A cleaning device for a carbonization furnace according to claim 1, 2, 3, 5 or 6, characterized in that: A traction unit (11) is provided on both sides of the yarn bundle running channel (1), and the traction unit (11) is consistent with the running direction of the yarn bundle; The guide unit (21) includes a first end and a second end; The two traction units (11) are detachably connected to the first ends of the two guide units (21) respectively; The traction unit (11) generates a first traction force to pull the guide unit (21) to move in the tow running channel (1).

9. The cleaning device for a carbonization furnace according to claim 8, characterized in that: It also includes a second traction unit (11), which is independently arranged from the tow running channel (1). The two second traction units (11) are detachably connected to the second ends of the two guide units (21), respectively, and generate at least a second traction force in a direction opposite to that of the traction unit (11); The second traction force is smaller than the first traction force.

10. The cleaning device for a carbonization furnace according to claim 9, characterized in that: The second traction force also generates a repulsive force on the two guide units (21).

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