A fiber drying system and fiber sizing production line

Abstract

The utility model discloses a kind of fiber drying system and fiber sizing production line, it is related to fiber production equipment technical field, fiber drying system includes air heater, air compressor, waste gas air extractor and multiple for passing through fiber network ware of fiber bundle, the air inlet end of air heater is connected with the air outlet end of air compressor;Each fiber network ware is equipped with air inlet, the air outlet end of air heater is respectively connected the air inlet of each fiber network ware by gas distribution pipeline, fiber network ware outside is equipped with waste gas recovery cover, the air inlet end of waste gas air extractor is connected with the exhaust port of waste gas recovery cover by pipeline I, this fiber drying system can be used on fiber sizing production line, to solve the problem that sizing is not sufficient and uneven distribution on the surface of fiber, sizing material cannot form uniform sizing film on the surface of fiber after drying.

Description

Technical Field

[0001] This utility model relates to the field of fiber production equipment technology, specifically to a fiber drying system and a fiber sizing production line. Background Technology

[0002] Currently, the mainstream continuous fiber sizing technology is the "integrated online spinning-sizing process." Its core process link needs to be synchronized with the fiber spinning process in real time. The specific process is as follows: The continuous fiber bundle extruded from the spinneret of the spinning machine is directly connected to the sizing system after cooling and shaping, without the need for additional offline transfer. The fiber bundle first passes through a high-precision tension adjustment device to ensure it maintains a stable tension (avoiding tension fluctuations affecting the subsequent sizing effect). Then, it enters a closed sizing tank containing a special sizing agent suitable for the fiber type (such as glass fiber, carbon fiber, polyester industrial yarn, etc.). The fiber bundle completes the sizing process under the guidance of multiple sets of wear-resistant guide rollers within the tank. After sizing, the fiber bundle immediately enters a pre-drying unit to initially remove most of the moisture from the sizing agent (the removal ratio can be flexibly adjusted according to the characteristics of different fibers). Finally, depending on the subsequent weaving, winding, and other processing requirements, it needs to be transferred to a dedicated drying workshop for deep drying, allowing the sizing agent to solidify on the fiber surface to form a protective film.

[0003] This process has significant technical limitations: Firstly, it places stringent requirements on the precision and coordination of core equipment. Not only is the overall consumption of sizing agent large, but the sizing agent formula must also match the overall operating parameters of the system. Adjustments require coordinated equipment debugging, resulting in extremely poor flexibility. Secondly, continuous fiber spinning speeds generally exceed 100 meters per second, leading to extremely short residence times of the fiber bundles in the sizing tank. This makes it difficult to effectively disperse the monofilaments within the bundles, resulting in insufficient and uneven sizing on the fiber surface. After drying, the sizing agent cannot form a uniform film on the fiber surface, significantly weakening its protective effect on the fibers and directly impacting the quality of subsequent processing. Furthermore, the additional deep drying process not only extends the overall production cycle but also incurs high energy costs. Summary of the Invention

[0004] The purpose of this invention is to propose a new fiber drying system and a fiber sizing production line using the system, so as to solve the problems of insufficient and uneven sizing on the fiber surface, and the inability of the sizing material to form a uniform sizing film on the fiber surface after drying.

[0005] This utility model is achieved through the following technical solution: A fiber drying system includes an air heater, an air compressor, an exhaust gas extractor, and multiple fiber networkers for passing through fiber bundles. The air heater's inlet is connected to the air compressor's outlet. Each fiber mesh unit is equipped with an air inlet, and the air outlet of the air heater is connected to the air inlet of each fiber mesh unit through a distribution pipe. The fiber mesh unit is equipped with an exhaust gas recovery hood, and the air inlet of the exhaust gas extractor is connected to the exhaust port of the exhaust gas recovery hood through pipe I.

[0006] Furthermore, the exhaust gas recovery hood is a sealed hood with sealing holes for fibers to enter and exit.

[0007] Furthermore, the outlet of the exhaust gas extractor is connected to the inlet of the exhaust gas absorption tank via pipe II.

[0008] Furthermore, the fiber network device includes 2 to 6 units, which are arranged sequentially along the fiber conveying direction and are used for multi-stage continuous drying of the fiber.

[0009] Furthermore, the air heater is an electrically heated air heater.

[0010] A fiber sizing production line includes a fiber drying system as described above, as well as a pay-off frame, tension control roller group I, a sizing tank, tension control roller group II, and a take-up device. The pay-off frame is used for pay-off of fibers; tension control roller group I is used for pulling the fibers paid off by the pay-off frame; the sizing tank is used to hold the sizing agent for coating the fibers; the fiber drying system is used to dry the sized fibers; tension control roller group II is used for pulling the sized and dried fibers; and the winding device is used to wind up the fibers.

[0011] Furthermore, tension sensors are provided on both tension control roller group I and tension control roller group II.

[0012] Furthermore, the impregnation tank is equipped with multiple rollers II.

[0013] Furthermore, the roller I of the tension control roller group I and the roller II in the slurry tank are selected from graphite rollers, plastic rollers or steel rollers.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: I. This utility model proposes a novel fiber drying system, which constructs a complete integrated system for fiber drying and waste gas treatment. High-pressure air is provided by an air compressor, and the air heater heats it into a high-temperature drying airflow, which is then transported to multiple fiber meshers through a gas distribution pipeline. The high-temperature drying airflow is used to efficiently dry the fibers (or fiber bundles) passing through the meshers. At the same time, the waste gas recovery hood outside the fiber meshers, in conjunction with the waste gas extraction fan, can collect the waste gas generated during the drying process in a timely manner, which not only avoids waste gas pollution of the production environment, but also provides convenience for subsequent waste gas purification treatment, thereby improving the overall efficiency and environmental friendliness of fiber drying.

[0015] Second, in this utility model, a waste gas recovery hood with a sealed cover is used, and a sealed hole is opened for the fiber to pass through / out. This can greatly reduce the leakage of waste gas containing moisture or pollutants during the drying process, ensure that the waste gas is recovered to the maximum extent, and avoid the waste gas from escaping and causing adverse effects on the production environment.

[0016] Third, in this utility model, the exhaust end of the exhaust gas extractor is connected to the exhaust gas absorption tank, so that the extracted exhaust gas can be further processed in the absorption tank (such as absorbing moisture, volatile solvents, etc.), effectively purifying the exhaust gas components and making the final emission more in line with environmental protection requirements.

[0017] Fourth, in this utility model, the fiber drying system is designed with 2 to 6 fiber networkers, which are arranged sequentially along the fiber conveying direction to form a multi-stage continuous drying structure, so that the fiber is gradually dried during the conveying process, avoiding the problems of "uneven drying" or "insufficient drying" in a single drying process, and significantly improving the quality of fiber drying.

[0018] Fifth, in this utility model, an electric heating air heater is selected to heat the compressed gas. The electric heating air heater has the characteristics of high heating efficiency and precise temperature control. It can stably heat the high-pressure air to the required high temperature, ensuring a constant temperature of the drying airflow, thereby making the fiber drying effect consistent. At the same time, electric heating is clean and easy to control and maintain, reducing the difficulty of equipment operation and maintenance.

[0019] VI. This utility model proposes a fiber sizing production line that integrates the entire process of "unwinding → tension control → sizing → drying → tension control → winding". It combines the aforementioned specific fiber drying system with components such as unwinding frame, tension control roller group, sizing tank, and winding device to form a complete sizing production line. This ensures drying quality while improving production efficiency and realizing continuous and automated production, ultimately improving the quality consistency of fiber sizing products.

[0020] VII. In this utility model, in the fiber sizing production line, the tension sensors on tension control roller group I and tension control roller group II can monitor the tension during the fiber traction process in real time, which makes it easy to adjust the traction parameters (such as speed) according to the monitoring data, avoid fiber breakage due to excessive tension or accumulation / loosening due to insufficient tension, and improve the stability of the production process and the quality of fiber products.

[0021] 8. In this utility model, the multiple rollers II in the sizing tank can extend the sizing path and time of the fiber in the sizing tank, so that the fiber can come into more full contact with the sizing agent, and ensure that the sizing agent is more evenly distributed on the fiber surface after subsequent drying, thus providing a basic guarantee for the sizing quality.

[0022] 9. In this utility model, graphite rollers, plastic rollers, and steel rollers all have good wear resistance and chemical stability (such as resistance to slurry corrosion), and can adapt to the working environment of the sizing production line (long-term contact with fibers and slurry); rollers of different materials can also be flexibly selected according to process requirements (such as graphite rollers with good lubricity, plastic rollers with excellent corrosion resistance, and steel rollers with high strength), thereby improving the overall reliability and applicability of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the fiber drying system.

[0024] Figure 2 This is a schematic diagram of another implementation of the fiber drying system.

[0025] Figure 3 This is a partial structural diagram of the fiber network device connecting to the gas distribution pipe.

[0026] Figure 4 This is a schematic diagram of the exhaust gas recovery hood.

[0027] Figure 5 This is a schematic diagram of the fiber sizing production line.

[0028] Among them, 1. Fiber; 2. Air heater; 3. Air compressor; 4. Exhaust gas extractor; 5. Fiber networker; 6. Gas distribution pipe; 7. Exhaust gas recovery hood; 8. Pipe I; 9. Pipe II; 10. Pay-off frame; 11. Tension control roller group I; 12. Impregnation tank; 13. Tension control roller group II; 14. Winder; 15. Tension sensor; 16. Roller I; 17. Roller II; 18. Exhaust gas absorption tank; 5.1. Air inlet I; 7.1. Sealing hole. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0030] Example 1 This embodiment is the most basic implementation, a fiber drying system, which relates to the field of fiber production equipment technology, including an air heater 2, an air compressor 3, an exhaust gas extractor 4, and multiple fiber networkers 5 for passing through fibers 1 (or fiber bundles).

[0031] refer to Figure 1 , 3 The air heater 2 has its inlet end connected to the air outlet end of the air compressor 3, and is used to heat the high-pressure air to form a high-temperature dry airflow. Each fiber network device 5 is provided with an air inlet I5.1. The air outlet end of the air heater 2 is connected to the air inlet I5.1 of each fiber network device 5 through the air distribution pipe 6 to supply high-temperature drying airflow to each fiber network device 5. The high-temperature drying airflow is used to exchange heat with the fiber 1 passing through the fiber network device 5 to dry the fiber 1. The fiber network device 5 is equipped with an exhaust gas recovery hood 7, which is used to collect the humid exhaust gas discharged after each fiber network device 5 is working; the air inlet of the exhaust gas extractor 4 is connected to the exhaust port of the exhaust gas recovery hood 7 through pipe I8, and the exhaust gas extractor 4 is used to extract the humid exhaust gas inside the exhaust gas recovery hood 7.

[0032] Example 2 This embodiment is a further optimization of embodiment 1, the difference being that the exhaust gas recovery hood 7 is a sealed hood, and the sealed hood has sealing holes 7.1 for the fiber 1 to pass through and exit, see reference. Figure 4 Such a sealed enclosure structure can reduce the leakage of humid exhaust gas.

[0033] Example 3 The difference between this embodiment and embodiments 1-2 is that, in reference to... Figure 2 The exhaust gas extractor 4 has its outlet connected to the inlet of the exhaust gas absorption tank 18 via pipe II 9. The exhaust gas absorption tank 18 is used to absorb moisture or volatile components in the humid exhaust gas pumped by the exhaust gas extractor 4.

[0034] Example 4 Compared with Examples 1-3, the difference in this embodiment is that the fiber network device 5 includes 2-6 units, which are arranged sequentially along the conveying direction of the fiber 1 and used for multi-stage continuous drying of the fiber 1. (Reference) Figure 1 , Figure 1 The diagram illustrates the structure of a fiber drying system with four fiber networkers 5.

[0035] Example 5 The difference between this embodiment and embodiments 1-4 is that the air heater 2 is an electrically heated air heater.

[0036] Example 6 A fiber sizing production line, reference Figure 5 It includes a fiber drying system as described in Example 1, as well as a pay-off frame 10, a tension control roller group I 11, a sizing tank 12, a tension control roller group II 13, and a take-up device 14. The pay-off frame 10 is used to pay off the fiber 1; the tension control roller group I 11 is used to pull the fiber 1 paid off by the pay-off frame 10; the sizing tank 12 is used to hold the sizing agent for coating the fiber 1; the fiber drying system is used to dry the sized fiber 1; the tension control roller group II 13 is used to pull the sized and dried fiber 1; and the winding device 14 is used to wind up the fiber 1.

[0037] Example 7 This embodiment is a further optimization of embodiment 6, the difference being that both tension control roller group I 11 and tension control roller group II 13 are equipped with tension sensors 15, for reference. Figure 5 .

[0038] Example 8 The difference between this embodiment and embodiments 6-7 is that, in reference... Figure 5 The impregnation tank 12 is provided with multiple rollers II 17.

[0039] Example 9 Compared with Examples 6-8, the difference in this embodiment is that the rollers I16 of the tension control roller group I11 and tension control roller group II13, and the rollers II17 in the slurry tank 12 are graphite rollers, plastic rollers, or steel rollers.

[0040] Example 10 To facilitate public understanding of this utility model, this embodiment uses a preferred fiber sizing production line as an example to further illustrate the solution.

[0041] A fiber sizing production line includes a fiber drying system, a pay-off frame 10, a tension control roller group I 11, a sizing tank 12, a tension control roller group II 13, and a take-up device 14. (Ref.) Figure 5 .

[0042] The pay-off frame 10 is used to pay off the fiber 1; the tension control roller group I 11 is used to pull the fiber 1 paid off by the pay-off frame 10; the sizing tank 12 is used to hold the sizing agent for coating the fiber 1; the fiber 1 drying system is used to dry the sized fiber 1; the tension control roller group II 13 is used to pull the sized and dried fiber 1; and the winding device 14 is used to wind up the fiber 1.

[0043] In this embodiment, the fiber drying system includes an air heater 2, an air compressor 3, an exhaust gas extractor 4, and multiple fiber meshers 5 for passing through the fibers 1. (Refer to...) Figures 2-4The air heater 2 has its inlet end connected to the air compressor 3's outlet end, used to heat the high-pressure air to form a high-temperature dry airflow; each fiber mesh 5 is provided with an air inlet I5.1, and the air outlet end of the air heater 2 is connected to the air inlet I5.1 of each fiber mesh 5 through a distribution pipe 6, so as to supply high-temperature dry airflow to each fiber mesh 5. The high-temperature dry airflow is used to exchange heat with the fibers 1 passing through the fiber mesh 5 to dry the fibers 1; the fiber mesh 5 is provided with an exhaust gas recovery hood 7, which is used to collect the humid exhaust gas discharged after each fiber mesh 5 has worked; the air inlet end of the exhaust gas extractor 4 is connected to the exhaust port of the exhaust gas recovery hood 7 through a pipe I8, and the exhaust gas extractor 4 is used to extract the humid exhaust gas inside the exhaust gas recovery hood 7.

[0044] In this embodiment, the waste gas recovery hood 7 is a sealed hood with a sealing hole 7.1 for the fiber 1 to pass through, which can reduce the leakage of humid waste gas.

[0045] In this embodiment, the outlet of the exhaust gas extractor 4 is connected to the inlet of the exhaust gas absorption tank 18 through pipe II 9. The exhaust gas absorption tank 18 is used to absorb moisture or volatile components in the humid exhaust gas extracted by the exhaust gas extractor 4.

[0046] In this embodiment, the fiber network device 5 includes four units, which are arranged sequentially along the conveying direction of the fiber 1 and are used to perform multi-stage continuous drying of the fiber 1.

[0047] In this embodiment, the air heater 2 is an electrically heated air heater.

[0048] In this embodiment, tension sensors 15 are provided on both tension control roller group I11 and tension control roller group II13.

[0049] In this embodiment, the slurry tank 12 is provided with three rollers II 17.

[0050] In this embodiment, the rollers I16 of the tension control roller group I11 and tension control roller group II13, and the rollers II17 in the slurry tank 12 are graphite rollers, plastic rollers, or steel rollers.

[0051] In use, fiber 1 is fed through the feeder 10 (preferably a constant tension feeder, which helps to ensure that fiber 1 is subjected to uniform force and feed rate during the feed process, and prevents fiber 1 from being broken). After passing through tension control roller group I 11 and tension control roller group II 13 (the diameter of roller I 16 in tension control roller group I 11 and tension control roller group II 13 is preferably 5~20cm to control the running speed and tension of fiber 1), fiber 1 passes through the sizing tank 12 (the diameter can be designed to be 5~10cm). The sizing material must completely submerge fiber 1 to ensure that fiber 1 is fully wetted by the sizing liquid. Roller II 17 in sizing tank 12 can rotate and roller II 17 also has the function of circulating sizing material to complete the sizing of fiber 1.

[0052] After sizing, the fiber 1 passes through the fiber drying system and is quickly dried by high-speed air (the air can be cold or hot depending on the process requirements). The resin in the sizing forms a film on the surface of the fiber 1. The high-speed air in the fiber drying system can quickly dry the fiber 1 as it passes through. The exhaust gas from drying the fiber 1 is collected and centrally treated by the exhaust gas recovery hood 7, the exhaust gas extractor 4, and the exhaust gas absorption tank 18. After drying, the fiber 1 passes through the tension control roller group II 13 and is then wound up by the winding machine 14.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fiber drying system, characterized in that: It includes an air heater (2), an air compressor (3), an exhaust gas extractor (4), and multiple fiber networkers (5) for passing through the fiber bundle. The air inlet of the air heater (2) is connected to the air outlet of the air compressor (3); Each fiber mesh unit (5) is provided with an air inlet, and the air outlet of the air heater (2) is connected to the air inlet of each fiber mesh unit (5) through a distribution pipe (6). The fiber network device (5) is equipped with an exhaust gas recovery hood (7) on the outside. The air inlet of the exhaust gas extractor (4) is connected to the exhaust port of the exhaust gas recovery hood (7) through pipe I (8).

2. The fiber drying system according to claim 1, characterized in that: The waste gas recovery hood (7) is a sealed hood, and a sealing hole (7.1) is provided on the sealed hood for the fiber (1) to pass through and out.

3. The fiber drying system according to claim 1, characterized in that: The exhaust gas extractor (4) is connected to the inlet of the exhaust gas absorption tank (18) via pipe II (9).

4. The fiber drying system according to claim 1, characterized in that: The fiber network device (5) includes 2 to 6 units, and multiple fiber network devices (5) are arranged sequentially along the fiber conveying direction and are used to perform multi-stage continuous drying of the fiber (1).

5. The fiber drying system according to claim 1, characterized in that: The air heater (2) is an electrically heated air heater.

6. A fiber sizing production line, characterized in that: It includes the fiber drying system as described in claim 1, as well as the pay-off frame (10), tension control roller group I (11), sizing tank (12), tension control roller group II (13), and take-up device (14). The pay-off frame (10) is used for pay-off of the fiber (1); the tension control roller group I (11) is used for pulling the fiber (1) paid off by the pay-off frame (10); the sizing tank (12) is used to hold the sizing agent for coating the fiber (1); the fiber drying system is used to dry the sized fiber (1); the tension control roller group II (13) is used for pulling the sized and dried fiber (1); and the winding device (14) is used to wind up the fiber (1).

7. The fiber sizing production line according to claim 6, characterized in that: Tension sensors (15) are provided on both tension control roller group I (11) and tension control roller group II (13).

8. The fiber sizing production line according to claim 7, characterized in that: The impregnation tank (12) is equipped with multiple rollers II (17).

9. A fiber sizing production line according to claim 8, characterized in that: The rollers I (16) of the tension control roller group I (11) and the rollers II (17) in the slurry tank (12) are selected from graphite rollers, plastic rollers or steel rollers.

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