Spinneret constant temperature and humidity apparatus

Abstract

This utility model discloses a constant temperature and humidity instrument for spinnerets, relating to the field of spinneret machinery technology. The key technical points are: it includes a spinneret and an air circulation device, which comprises a fan, a ventilation duct, an air outlet, and a temperature and humidity control device. A spinneret tube is fixedly connected to the spinneret, passing through the ventilation duct. One end of the spinneret tube extends out of the air outlet and is fixedly connected to the spinneret. An annular telescopic baffle, which slides and engages with the air outlet, is detachably installed on the outer side of the spinneret. The annular telescopic baffle floats on the surface of the coagulation bath solution. The lower end of the annular telescopic baffle floats on the surface of the coagulation bath solution, thus forming a relatively sealed space between the spinneret and the coagulation bath solution. The temperature and humidity of the annular telescopic baffle are adjusted by the temperature and humidity control device, thereby precisely controlling the environmental conditions within the annular telescopic baffle and effectively improving the quality and performance stability of carbon fiber precursor.

Description

Technical Field

[0001] This utility model relates to the field of spinneret machinery technology, and more specifically, to a constant temperature and humidity instrument for spinnerets. Background Technology

[0002] Polyacrylonitrile-based carbon fiber has been widely used in many fields such as aerospace, automobiles, and sporting goods due to its excellent performance. The performance of carbon fiber largely depends on the quality of its precursor fiber, among which the spinning process in the dry-jet wet spinning process is crucial.

[0003] In the traditional dry-jet wet spinning process, the spinning solution jets ejected from the spinneret pass through a dry air layer before entering the coagulation bath solution. The temperature and humidity of this air layer are usually uncontrolled and are greatly affected by environmental factors and changes in production conditions. However, the temperature and humidity of the dry air layer have a significant impact on the solidification and shaping of the spinning solution jets. Unstable or unsuitable temperature and humidity conditions may lead to problems such as surface defects, uneven thickness, and uneven internal structure of the fibers, thereby affecting the mechanical, physical, and chemical properties of the final carbon fibers.

[0004] To improve the quality and performance stability of carbon fiber precursor, it is necessary to precisely control the environmental conditions of the air layer in the dry section of the spinneret during the dry-jet wet spinning process. Currently, the industry lacks effective means to achieve this goal, which has become a major technical bottleneck restricting the production of high-performance polyacrylonitrile-based carbon fibers.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] The purpose of this utility model embodiment is to provide a spinneret constant temperature and humidity instrument in order to solve the above-mentioned problems.

[0007] The above-mentioned technical objective of this utility model embodiment is achieved through the following technical solution: a spinneret constant temperature and humidity instrument, including a spinneret and an air circulation device, wherein the air circulation device includes a fan, a ventilation duct, an air outlet and a temperature and humidity regulating device, the air outlet is located above the coagulation bath solution, a spinneret tube is fixedly connected to the spinneret, the spinneret tube passes through the ventilation duct, one end of the spinneret tube passes through the air outlet and is fixedly connected to the spinneret, and an annular telescopic baffle that slides and cooperates with the air outlet is detachably installed on the outside of the spinneret, the annular telescopic baffle floats on the surface of the coagulation bath solution.

[0008] The present invention is further configured such that: the annular telescopic baffle includes a sleeve and a left baffle and a right baffle that slide with the sleeve; the ventilation duct is fixedly connected to a protrusion at the air outlet; the upper end of the sleeve is fixedly connected to a flange that abuts against the protrusion; and the flange is provided with a through groove that slides with the protrusion.

[0009] The present invention is further configured such that the lower surface of the flange is provided with a groove that engages with the protrusion.

[0010] The present invention is further configured such that: a limiting post is provided on each side of the left baffle and the right baffle facing each other; a limiting groove is provided on the sleeve to slide with the limiting post; and the sleeve and the lower baffle are fixed by bolts.

[0011] The present invention is further configured such that: an annular float plate is fixedly connected to the lower ends of the left baffle and the right baffle, the annular float plate floats on the surface of the coagulation bath solution, the annular float plate is made of foam material, and the annular telescopic baffle is a polyurethane foam board.

[0012] The present invention is further configured such that: a temperature and humidity sensor is provided on the right baffle, a receiving sensor is provided inside the temperature and humidity regulating device, and the temperature and humidity sensor is electrically connected to the temperature and humidity regulating device.

[0013] In summary, this utility model has the following beneficial effects:

[0014] By installing a detachable annular telescopic baffle on the outside of the spinneret, with the lower end of the annular telescopic baffle floating on the surface of the coagulation bath solution, a relatively sealed space is formed between the spinneret and the coagulation bath solution. This prevents external environmental factors from affecting the spinning solution sprayed from the spinneret. At the same time, by setting up an air circulation device, air circulation can be ensured within the annular telescopic baffle. The temperature and humidity of the annular telescopic baffle can be regulated by a temperature and humidity control device, thereby precisely controlling the environmental conditions within the annular telescopic baffle and effectively improving the quality and performance stability of carbon fiber precursor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the spinneret constant temperature and humidity instrument of this utility model;

[0016] Figure 2 This is a schematic diagram of the air circulation device and spinneret in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the annular telescopic baffle in this utility model;

[0018] Figure 4 This is a schematic diagram of the right baffle in this utility model;

[0019] Figure 5 This is a cross-sectional view of the constant temperature and humidity instrument for the spinneret of this utility model.

[0020] Reference numerals: 1. Spinneret; 2. Air circulation device; 3. Fan; 4. Ventilation duct; 5. Air outlet; 6. Temperature and humidity control device; 7. Spinneret tube; 8. Annular telescopic baffle; 9. Sleeve; 10. Left baffle; 11. Right baffle; 12. Protrusion; 13. Flange; 14. Through groove; 15. Groove; 16. Limiting post; 17. Limiting groove; 18. Bolt; 19. Annular float; 20. Temperature and humidity sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] In one possible embodiment, please refer to Figure 1 and Figure 2 As shown, the spinneret 1 is a constant temperature and humidity instrument, including a spinneret 1 and an air circulation device 2. The air circulation device 2 includes a fan 3, a ventilation duct 4, an air outlet 5, and a temperature and humidity regulating device 6. The air outlet 5 is located above the coagulation bath solution. A spinneret tube 7 is fixedly connected to the spinneret 1. The spinneret tube 7 passes through the ventilation duct 4, and one end of the spinneret tube 7 extends out of the air outlet 5 and is fixedly connected to the spinneret 1. An annular telescopic baffle 8 is detachably installed on the outside of the spinneret 1 and slides with the air outlet 5. The annular telescopic baffle 8 floats on the surface of the coagulation bath solution. By fitting the detachably installed annular baffle 8 on the outside of the spinneret 1... The annular telescopic baffle 8 has its lower end floating on the surface of the coagulation bath solution, thus forming a relatively sealed space between the spinneret 1 and the coagulation bath solution. This prevents external environmental factors from affecting the spinning solution ejected from the spinneret 1. The annular telescopic baffle 8 is made of polyurethane foam board, which can effectively isolate the temperature and humidity inside the annular telescopic baffle 8 from the outside environment. The detachable annular telescopic baffle 8 can be adjusted according to the actual level of the coagulation bath solution. At the same time, when it is necessary to disassemble, repair and clean the spinneret 1, the annular telescopic baffle 8 can be removed in time for easy cleaning and maintenance.

[0023] For further details, please refer to Figure 1 , Figure 2 and Figure 4As shown, by setting up an air circulation device 2, the fan 3 drives the air circulation within the annular telescopic baffle 8 and the ventilation duct 4. The temperature and humidity regulating device 6 regulates the temperature and humidity of the annular telescopic baffle 8. A temperature and humidity sensor 20 is installed on the annular telescopic baffle 8, and a receiving sensor is installed inside the temperature and humidity regulating device 6. The temperature and humidity sensor 20 is electrically connected to the temperature and humidity regulating device 6. The temperature and humidity within the annular telescopic baffle 8 are monitored in real time by the temperature and humidity sensor 20, and the detected data is transmitted to the receiving sensor, thereby regulating the temperature and humidity within the annular telescopic baffle 8. By pushing the air through the temperature and humidity regulating device 6 by the fan 3, the temperature and humidity are ensured to be evenly distributed throughout the ventilation duct 4 and the annular telescopic baffle 8, avoiding excessive local temperature and humidity differences. This allows for precise control of the environmental conditions within the annular telescopic baffle 8, effectively improving the quality and performance stability of the carbon fiber precursor. The fan 3 can be an axial flow fan 3, a centrifugal fan 3, or a cross-flow fan 3. The ventilation duct 4 can be a spiral, split, or annular layout to adapt to different spinneret 1 structures or space requirements.

[0024] For further details, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the annular telescopic baffle 8 includes a sleeve 9 and a left baffle 10 and a right baffle 11 that slide with the sleeve 9. The temperature and humidity sensor 20 is located on the right baffle 11. The ventilation duct 4 is fixedly connected to the air outlet 5 with a protrusion 12. The upper end of the sleeve 9 is fixedly connected to a flange 13 that abuts against the protrusion 12. The flange 13 is provided with a through groove 14 that slides with the protrusion 12. The lower surface of the flange 13 is provided with a groove 15 that engages with the protrusion 12. By engaging the protrusion 12 with the groove 15, the engagement between the annular telescopic baffle 8 and the air outlet 5 is ensured.

[0025] For details, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, when installing the annular telescopic baffle 8, the sleeve 9 is slid into the ventilation duct 4 by aligning the groove 14 of the flange 13 with the protrusion 12, and then rotating the sleeve 9 so that the flange 13 abuts against the protrusion 12. When the protrusion 12 is aligned with the groove 15, the protrusion 12 is engaged in the groove 15, thereby limiting the sleeve 9 circumferentially and preventing the sleeve 9 from rotating, ensuring the limit of the air outlet 5 on the annular telescopic baffle 8. When it is necessary to disassemble the annular telescopic baffle, the sleeve 9 is moved upward to disengage the protrusion 12 from the groove 15, and then the flange 13 is rotated. When the groove 14 is aligned with the protrusion 12, the sleeve 9 is slid downward to complete the disassembly of the annular telescopic baffle 8, which is simple and convenient.

[0026] For further details, please refer to Figure 1 , Figure 3 and Figure 4 As shown, both the left baffle 10 and the right baffle 11 are provided with limiting posts 16 on opposite sides. The sleeve 9 is provided with a limiting groove 17 that slides with the limiting post 16. Through the sliding engagement of the limiting post 16 and the limiting groove 17, the left baffle 10, the right baffle 11 and the sleeve 9 are slidably engaged. The sleeve 9 and the lower baffle are fixed by bolts 18. During installation, the limiting posts 16 of the left baffle 10 and the right baffle 11 are respectively inserted into the limiting grooves 17, and then the left baffle 10 and the right baffle 11 are fixed by bolts 18, thus completing the installation of the left baffle 10 and the right baffle 11. The installation of the right baffle 11 and the lower ends of the left baffle 10 and the right baffle 11 are fixedly connected to an annular float 19. The annular float 19 floats on the surface of the coagulation bath solution. The annular float 19 is made of foam material and can provide buoyancy to the left baffle 10 and the right baffle 11, so that the left baffle 10 and the right baffle 11 can float on the surface of the coagulation bath solution. Therefore, when the liquid level of the coagulation bath solution changes, the left baffle 10 and the right baffle 11 can float up and down together, ensuring the sealing between the annular telescopic baffle 8 and the coagulation bath solution.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A spinneret temperature and humidity control instrument, comprising a spinneret (1) and an air circulation device (2), characterized in that: The air circulation device (2) includes a fan (3), a ventilation duct (4), an air outlet (5), and a temperature and humidity control device (6). The air outlet (5) is located above the coagulation bath solution. A spinneret (7) is fixedly connected to the spinneret plate (1). The spinneret (7) passes through the ventilation duct (4). One end of the spinneret (7) passes through the air outlet (5) and is fixedly connected to the spinneret plate (1). An annular telescopic baffle (8) that slides with the air outlet (5) is detachably installed on the outside of the spinneret plate (1). The annular telescopic baffle (8) floats on the surface of the coagulation bath solution.

2. The constant temperature and humidity instrument for spinnerets according to claim 1, characterized in that: The annular telescopic baffle (8) includes a sleeve (9) and a left baffle (10) and a right baffle (11) that slide with the sleeve (9). The ventilation duct (4) is fixedly connected to a protrusion (12) at the air outlet (5). The upper end of the sleeve (9) is fixedly connected to a flange (13) that abuts against the protrusion (12). The flange (13) is provided with a through groove (14) that slides with the protrusion (12).

3. The constant temperature and humidity instrument for spinnerets according to claim 2, characterized in that: The lower surface of the flange (13) is provided with a groove (15) that engages with the protrusion (12).

4. The constant temperature and humidity instrument for spinnerets according to claim 2, characterized in that: The left baffle (10) and the right baffle (11) are each provided with a limiting post (16) on opposite sides. The sleeve (9) is provided with a limiting groove (17) that slides with the limiting post (16). The sleeve (9) and the lower baffle are fixed by bolts (18).

5. The constant temperature and humidity instrument for spinnerets according to claim 4, characterized in that: The lower ends of the left baffle (10) and the right baffle (11) are fixedly connected to an annular float (19), which floats on the surface of the coagulation bath solution. The annular float (19) is made of foam material, and the annular telescopic baffle (8) is a polyurethane foam board.

6. The constant temperature and humidity instrument for spinnerets according to claim 4, characterized in that: A temperature and humidity sensor (20) is provided on the right baffle (11), and a receiving sensor is provided inside the temperature and humidity regulating device (6). The temperature and humidity sensor (20) is electrically connected to the temperature and humidity regulating device (6).

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