Carbon fiber precursor static elimination device and production system

Abstract

The embodiment of the utility model provides a carbon fiber precursor electrostatic elimination device and a production system, and relates to the field of carbon fiber production. The carbon fiber precursor static electricity eliminating device comprises a rod body, the length of the rod body is 1.8-2.0 m, a plurality of air outlet holes used for spraying out positive and negative charge airflow are formed in the rod body, and all the air outlet holes are formed in the length direction of the rod body at intervals. The carbon fiber precursor production system comprises a conveying roller used for conveying the carbon fiber precursor and the carbon fiber precursor static electricity eliminating device, and all the air outlet holes face a certain section of the carbon fiber precursor conveyed by the conveying roller. According to the carbon fiber precursor static electricity eliminating device and the production system, static electricity in carbon fiber precursor production can be effectively eliminated.

Description

Technical Field

[0001] This application relates to the field of carbon fiber production, and more specifically, to a device and production system for eliminating static electricity in carbon fiber precursor. Background Technology

[0002] Currently, in the production process of carbon fiber precursor, static electricity is easily generated after the precursor fibers undergo friction, stretching, and hot air drying. Static electricity presents the following drawbacks: 1. Static electricity can easily cause electromagnetic interference to electronic equipment in the precursor fiber production workshop, leading to malfunctions or accidental operation (drive rollers stopping); 2. Static electricity attracts dust, causing contamination of integrated circuits and semiconductor components, resulting in equipment performance degradation or parameter decline, or even burnout or failure, thus increasing production costs; 3. Static electricity can also cause carbon fiber precursor fibers to drift, become entangled, or break, easily causing problems such as filament entanglement on the drive rollers, which are difficult and dangerous to handle; 4. Operators are prone to electric shocks after touching static-laden fiber bundles, and clothing worn with static electricity can become entangled, causing inconvenience.

[0003] Therefore, there is an urgent need for an effective device to eliminate static electricity to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a static electricity elimination device and production system for carbon fiber precursor, which can effectively eliminate static electricity in the production of carbon fiber precursor.

[0005] In a first aspect, embodiments of this application provide a carbon fiber precursor electrostatic elimination device, which includes a rod with a length of 1.8 to 2.0 m. The rod is provided with a plurality of air outlets for ejecting positive and negative charge airflows, and all the air outlets are arranged at intervals along the length direction of the rod.

[0006] In the above implementation process, the static elimination device for carbon fiber precursor has a relatively simple structure. It uses the ejected positive and negative charged airflow to neutralize the charge on the carbon fiber precursor. Moreover, the length of the rod is 1.8 to 2.0 m, and the coverage area of ​​the ejected positive and negative charged airflow can neutralize the static electricity of the carbon fiber precursor during production. If the length of the rod is too short, it will be difficult to completely eliminate the static electricity.

[0007] In one possible implementation, it further includes a plurality of transmitting electrode needles, which are disposed on the rod body and correspond one-to-one with the air outlets, with each air outlet located in the middle of the corresponding transmitting electrode needle.

[0008] In the above process, when the airflow is ejected from the air outlet, the corresponding emitting electrode needle generates corona discharge, ionizing the air to form a large amount of airflow with positive and negative charges.

[0009] In one possible implementation, the spacing between adjacent air vents is 4 to 6 cm.

[0010] In the above process, the flow rate of positive and negative charged air is controlled by adjusting the spacing between the air outlets, so as to completely eliminate static electricity from the carbon fiber precursor during production.

[0011] In one possible implementation, the rod body includes a rod-shaped outer shell and an ion rod disposed within the outer shell, the ion rod being disposed along the length direction of the outer shell, and the vent being disposed on the outer shell.

[0012] In the above implementation process, the rod has a simple structure and stable operation.

[0013] In one possible implementation, it also includes a conduit for conveying compressed air, the conduit being in communication with the interior of the rod.

[0014] In the above process, airflow is introduced into the rod through a pipe to form an airflow with positive and negative charges, which is then ejected from the air outlet to effectively eliminate static electricity in the carbon fiber precursor.

[0015] In one possible implementation, the pipeline is equipped with a regulating valve for adjusting the flow rate of compressed air;

[0016] And / or, the rod body is provided with a quick-connect socket that connects to the inside of the rod body, and the pipe is inserted into the quick-connect socket.

[0017] In the above process, the airflow is adjusted by regulating the valve to achieve strong wind speed, thereby quickly eliminating static electricity in the carbon fiber precursor.

[0018] In one possible implementation, it further includes a fixing bracket for mounting, the fixing bracket being located at least at one end of the rod.

[0019] In the above process, a fixed bracket is used to install the rod in the carbon fiber precursor production system.

[0020] Secondly, embodiments of this application provide a carbon fiber precursor production system, which includes a conveying roller for conveying carbon fiber precursors and a carbon fiber precursor electrostatic elimination device provided in the first aspect, wherein all the air outlets are directed toward a section of carbon fiber precursor being conveyed by the conveying roller.

[0021] In the above process, the conveyor rollers transport carbon fiber filaments for various processing steps to form a carbon fiber filament production system. By integrating a carbon fiber filament static elimination device into the carbon fiber filament production system, static electricity in the production of carbon fiber filaments can be effectively eliminated, reducing the phenomenon of poor winding and forming caused by static electricity, resulting in better filament forming and effectively improving the quality of carbon fiber filaments. At the same time, it reduces electromagnetic interference and dust generation, thus lowering the equipment failure rate.

[0022] In one possible implementation, it further includes a drying device for drying carbon fiber precursors, wherein the conveying rollers convey the carbon fiber precursors through the drying device, and the carbon fiber precursor static elimination device is located behind the drying device.

[0023] In the above process, the carbon fiber precursor is prone to static electricity after passing through the drying device. After passing through the static electricity elimination device of the carbon fiber precursor behind the drying device, the static electricity of the carbon fiber precursor can be quickly eliminated, thereby improving the quality of the carbon fiber precursor.

[0024] In one possible implementation, it further includes a pre-oxidation device for pre-oxidizing carbon fiber precursor and an air compressor for generating compressed air, the air compressor being connected to the pre-oxidation device to provide compressed air, and the air compressor also being connected to the interior of the rod to provide compressed air.

[0025] In the above implementation process, the air compressor is connected to both the pre-oxidation device and the inside of the rod. The air compressor not only provides compressed air to the pre-oxidation device to form pre-oxidation conditions, but also provides compressed air to the inside of the rod of the carbon fiber precursor static elimination device to form an airflow with positive and negative charges. This design utilizes the conditions of the carbon fiber precursor production system to complete static elimination, requires minimal improvement to the production line, and is easy to promote. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a carbon fiber precursor electrostatic elimination device in a production system, provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the electrical connections of the middle rod section.

[0029] Icons: 10-rod body; 11-ion rod; 12-control box; 20-pipe; 30-regulating valve; 40-quick connector; 50-emitting electrode needle; 60-fixed bracket; 2-conveying roller; 3-filament bundle. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Please refer to Figure 1 This embodiment provides a carbon fiber precursor electrostatic elimination device, which includes a rod 10 with a length of 1.8 to 2.0 m. The rod 10 is provided with a plurality of air outlets for ejecting positive and negative charge gas flow (ion gas flow), and all air outlets are arranged at intervals along the length direction of the rod 10.

[0038] In some embodiments of this application, the carbon fiber precursor electrostatic elimination device further includes a plurality of emitting electrode needles 50, which are disposed on the rod body 10 and correspond one-to-one with the air outlets. Each air outlet is located in the middle of the corresponding emitting electrode needle 50, and the distance between adjacent air outlets is 4 to 6 cm.

[0039] Please refer to the following: Figure 2 The rod body 10 includes a rod-shaped outer shell and an ion rod 11, a high-voltage transformer, and a control box 12 disposed inside the outer shell. The ion rod 11 is disposed along the length of the outer shell. The high-voltage transformer is electrically connected to the ion rod 11, and the control box 12 is electrically connected to the ion rod 11. An air outlet is disposed on the outer shell.

[0040] In some embodiments of this application, it further includes a pipe 20 for conveying compressed air, the pipe 20 being in communication with the interior of the rod 10. A regulating valve 30 for adjusting the compressed air flow rate is provided on the pipe 20; a quick-connect spigot is provided on the rod 10 for connecting to the interior of the rod 10, and the pipe 20 is inserted into the quick-connect spigot.

[0041] In some embodiments of this application, it also includes a fixing bracket 60 for mounting, the fixing bracket 60 being located at least at one end of the rod 10.

[0042] The structure of this carbon fiber precursor electrostatic eliminator can be referenced from commercially available pulsed ion air bars (composed of emitting electrode needles 50, high-voltage generators, control boxes 12, power switches, regulating valves 30, quick-connect connectors, etc.). Its simple structure and 1.8–2.0m length make it suitable for retrofitting carbon fiber precursor production lines, allowing for rapid deployment. In practical applications, the carbon fiber precursor electrostatic eliminator can use a pulsed DC air bar as the main equipment. The pulsed AC design includes a high-voltage operation indicator light, and intelligent remote control allows for frequency and ion balance adjustment. The emitting electrode needles 50 are tungsten ion emitting needles with an ultra-long lifespan and easy battery replacement. The specially designed strip-shaped groove on the back of the rod 10 with a mounting nut allows for free movement. It is powered by a 24V DC network port and comes with a 2.5–3.0m power cord, suitable for the conditions of carbon fiber precursor production lines.

[0043] In addition, this application provides a carbon fiber precursor production system, which includes a conveying roller 2 for conveying carbon fiber precursor and a carbon fiber precursor static elimination device of the aforementioned embodiment, wherein all air outlets are directed toward a section of carbon fiber precursor conveyed by the conveying roller 2.

[0044] In some embodiments of this application, it also includes a drying device for drying carbon fiber precursors. The conveying roller 2 conveys the carbon fiber precursor bundle 3 through the drying device. The carbon fiber precursor static elimination device is located behind the drying device, specifically above the outlet of the bundle 3 at the rear end of the drying section. This device is an explosion-proof device, which is beneficial to production safety.

[0045] In some embodiments of this application, it also includes a pre-oxidation device for pre-oxidation of carbon fiber precursor and an air compressor for generating compressed air, the air compressor being connected to the pre-oxidation device to provide compressed air, and the air compressor also being connected to the interior of the rod 10 to provide compressed air.

[0046] Due to the diverse types of oils used in current carbon fiber precursor production, high spinning speeds, and numerous precursor specifications, the frequency of static electricity generation in the precursor has increased. Furthermore, factors such as friction, stretching, and hot air drying of the fiber bundle 3 further amplify the static electricity generation. As one implementation method, the carbon fiber precursor production system incorporates a static electricity elimination device installed and fixed above the outlet of the fiber bundle 3 in the drying section (specifically, the drying device) using a fixed bracket 60.

[0047] In the production process of the carbon fiber precursor production system of this application embodiment, the drying device dries the carbon fiber precursor bundle 3 with hot air. The dried bundle 3 is output from the outlet and passes under the carbon fiber precursor static elimination device. All the air outlets of the carbon fiber precursor static elimination device are arranged along the conveying direction of the bundle 3, and all the air outlets face the bundle 3. In the carbon fiber precursor electrostatic eliminator, a high-voltage transformer boosts the power frequency voltage to the required voltage. Driven by pulsed DC current, the ion rod 11 generates corona discharge through the emitting electrode needles 50, ionizing the air to form a large amount of airflow carrying positive and negative charges. The charge of the positive and negative ions is controlled by the control box 12. Additionally, the compressed air output is adjusted by the regulating valve 30. The compressed air used is 0.4–0.6 MPa instrument compressed air, with the outlet located in the middle of the emitting electrode needles 50, the spacing between the emitting electrode needles 50 being 5 cm, and the air inlet being an 8 mm flexible hose quick-connect interface 40. An airflow regulating valve 30 is used to adjust the appropriate flow rate of compressed air. Finally, a large amount of airflow carrying positive and negative charges is blown out at high speed. The airflow output direction should be directly opposite the fiber bundle 3. When the surface of the carbon fiber precursor carries a negative charge, it attracts positive charges in the airflow; when the surface of the carbon fiber precursor carries a positive charge, it attracts negative charges in the airflow, thus neutralizing the static electricity on the carbon fiber precursor. After electrostatic elimination, the fiber bundle 3 is stretched and wound into shape.

[0048] The static eliminator for carbon fiber precursor fibers in this embodiment features a simple structure, ease of workshop modification, and rapid deployment; a large ion flow coverage area, rapid static neutralization, and stable operation; strong wind speed and fast static elimination; and excellent grounding protection for the rod 10, ensuring high safety and preventing electric shock from accidental contact. Applying this static eliminator to a carbon fiber precursor fiber production system reduces static electricity in the fiber precursor fibers, improves fiber quality, and enhances fiber formation. Specifically, it results in smaller fuzzy fibers in the fiber bundle 3, more regular fiber bundle formation, and a significant reduction in edge collapse and deformation. Simultaneously, it reduces electromagnetic interference and dust generation, lowers equipment failure rates, extends equipment lifespan, and facilitates cost control for enterprises, making it suitable for the carbon fiber precursor fiber production field.

[0049] In summary, the static elimination device and production system for carbon fiber precursors in this application can effectively eliminate static electricity during the production of carbon fiber precursors.

[0050] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A device for eliminating static electricity in carbon fiber precursor, characterized in that, It includes a rod body with a length of 1.8 to 2.0 m. The rod body is provided with a plurality of air outlets for ejecting positive and negative charge gas streams, and all the air outlets are arranged at intervals along the length direction of the rod body.

2. The carbon fiber precursor electrostatic elimination device according to claim 1, characterized in that, It also includes several transmitting electrode needles, which are disposed on the rod body and correspond one-to-one with the air outlets, with each air outlet located in the middle of the corresponding transmitting electrode needle.

3. The carbon fiber precursor electrostatic elimination device according to claim 1 or 2, characterized in that, The spacing between adjacent air outlets is 4 to 6 cm.

4. The carbon fiber precursor electrostatic elimination device according to claim 1, characterized in that, The rod body includes a rod-shaped outer shell and an ion rod disposed within the outer shell. The ion rod is disposed along the length direction of the outer shell, and the vent is disposed on the outer shell.

5. The carbon fiber precursor electrostatic elimination device according to claim 1, characterized in that, It also includes a pipe for conveying compressed air, the pipe being in communication with the interior of the rod.

6. The carbon fiber precursor electrostatic elimination device according to claim 5, characterized in that, The pipeline is equipped with a regulating valve for adjusting the flow rate of compressed air; And / or, the rod body is provided with a quick-connect socket that connects to the inside of the rod body, and the pipe is inserted into the quick-connect socket.

7. The carbon fiber precursor electrostatic elimination device according to claim 1, characterized in that, It also includes a mounting bracket for installation, the mounting bracket being located at least at one end of the rod.

8. A carbon fiber precursor production system, characterized in that, It includes a conveying roller for conveying carbon fiber filaments and a static eliminator for carbon fiber filaments as described in any one of claims 1 to 7, wherein all the vent holes are directed toward a segment of carbon fiber filament conveyed by the conveying roller.

9. The carbon fiber precursor production system according to claim 8, characterized in that, It also includes a drying device for drying carbon fiber precursors, wherein the conveying rollers convey the carbon fiber precursors through the drying device, and the carbon fiber precursor static elimination device is located behind the drying device.

10. The carbon fiber precursor production system according to claim 8, characterized in that, It also includes a pre-oxidation device for pre-oxidizing carbon fiber precursors and an air compressor for generating compressed air, the air compressor being connected to the pre-oxidation device to provide compressed air, and the air compressor also being connected to the interior of the rod to provide compressed air.

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