Carbon fiber precursor oiling, drying and densifying device

Abstract

The utility model discloses a carbon fiber precursor oiling, drying and densifying device, which relates to the technical field of carbon fiber production equipment, and is characterized in that a drying and densifying device is detachably connected with an oiling device, the oiling device comprises a base, a cushion layer and a base, an oil nozzle is arranged on the base, an oil storage cavity and an oil pump are arranged in the base, and the oil pump is arranged in the oil storage cavity. An oil outlet hole is formed in the oiling device and communicated with the oil nozzle and the oil storage cavity, an oil inlet hole is formed in the surface of the base, and a collecting groove is formed in the cushion layer. According to the utility model, the oiling device is detachably connected with the drying and compacting device, so that the occupied area and the production flow of the equipment are reduced, the carbon fiber precursor is uniformly oiled through the oil nozzle, and in the process of transferring the oiled precursor to the drying and compacting device, the production efficiency is improved. The oiling agent dripping or rubbing from the carbon fiber precursor falls into the cushion layer and the bottom layer, and then flows into the oil storage cavity through the collecting groove and the oil inlet hole, so that the oiling agent is recycled, and the loss of the oiling agent is reduced.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber production equipment technology, and more specifically, to a carbon fiber precursor oiling, drying and densification device. Background Technology

[0002] The preparation of polyacrylonitrile precursor involves two major processes: preparation of the precursor solution and spinning of the precursor solution. Preparation of the precursor solution includes three steps: polymerization, demonolysis, and defoaming. Spinning of the precursor solution includes more than a dozen steps such as filtering, metering, coagulation, hot water drawing, washing, oiling, drying and densification, steam drawing, heat setting, and winding.

[0003] Among them, the oiling process and the drying and densification process are extremely critical links. In the traditional process, the oiling device and the drying and densification device are set up independently. The two independent production devices result in a long production process, large equipment footprint, and increased equipment investment and production and operating costs. At the same time, during production and processing, the oiling device applies oil to the surface of carbon fiber through oil nozzles or oil baths, and then transfers the oiled carbon fiber to the drying and densification device. During the transfer process, oil may drip or rub off on the fiber surface, thereby increasing the loss of oil and further increasing production costs.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a carbon fiber precursor oiling, drying and densification device to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model embodiment is achieved through the following technical solution: a carbon fiber precursor oiling, drying and densification device, comprising a drying and densification device and an oiling device, characterized in that: the drying and densification device and the oiling device are detachably connected, the oiling device comprises a base, a pad and a base distributed vertically, the base is provided with an oil nozzle, the base is provided with an oil storage chamber and an oil pump, the oiling device is provided with an oil outlet hole penetrating the base and the pad, the oil outlet hole is connected to the oil nozzle and the oil storage chamber, the surface of the base is provided with an oil inlet hole connected to the oil storage chamber, and the pad is provided with a collection groove connected to the oil outlet hole.

[0007] The present invention is further configured such that: the oil nozzle includes two first oil nozzles and a second oil nozzle located between the two first oil nozzles, the oil outlet is located inside the second oil nozzle, the pad layer is provided with a collection hole between the first oil nozzle and the second oil nozzle, the collection hole is connected to the collection groove, the first oil nozzle is U-shaped, and the second oil nozzle is annular.

[0008] The present invention is further configured such that: the second oil nozzle is provided with a plurality of spirally arranged guide grooves, and the second oil nozzle is provided with a duckbill nozzle at the oil outlet, the duckbill nozzle being connected to the oil outlet.

[0009] The present invention is further configured such that: each of the guide grooves is provided with a stop block, each of the stop blocks is staggered and the interval angle is the same, and the oil outlet is eccentrically set.

[0010] The present invention is further configured such that: the side wall of the drying and densification device is provided with a protrusion, and both sides of the base are provided with a slot that engages with the protrusion.

[0011] The present invention is further configured such that: the lower end of the protrusion is fixedly connected to symmetrically distributed support blocks, and the two sides of the base are provided with long grooves that communicate with the slots, and the support blocks are engaged with the long grooves.

[0012] In summary, this utility model has the following beneficial effects:

[0013] By detachably connecting the oiling device and the drying and densification device, and by allowing both sides of the oiling device to be snapped into the drying and densification device, installation becomes convenient. The carbon fiber precursor can be oiled from either end of the oiling device, reducing the equipment's footprint and production process. The carbon fiber precursor is evenly oiled through the oil nozzle, and during the transfer of oil to the drying and densification device, any oil dripping or rubbing off the carbon fiber precursor will fall into the pad and bottom layer, and then flow into the oil storage chamber through the collection tank and oil inlet, thereby completing the recovery of the oil and reducing oil loss. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a carbon fiber precursor oiling, drying and densification device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the drying and densification device in this utility model;

[0016] Figure 3 This is a schematic diagram of the oiling device in this utility model;

[0017] Figure 4 This is a cross-sectional view of the oiling device in this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the second oil nozzle in this utility model;

[0019] Figure 6 This is a cross-sectional view of the second oil nozzle in this utility model.

[0020] Reference numerals: 1. Oiling device; 2. Drying and densification device; 3. Base; 4. Pad; 5. Base; 6. Oil storage chamber; 7. Oil pump; 8. Oil outlet; 9. Collection tank; 10. First oil nozzle; 11. Second oil nozzle; 12. Collection hole; 13. Guide groove; 14. Duckbill nozzle; 15. Stop block; 16. Protrusion; 17. Slot; 18. Support block; 19. Long groove; 20. Oil inlet. 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 , Figure 2 and Figure 3 As shown, a carbon fiber precursor oiling, drying, and densification device includes a drying and densification device 2 and an oiling device 1. The drying and densification device 2 and the oiling device 1 are detachably connected, thereby reducing the equipment's footprint and production process. The detachable connection facilitates cleaning and maintenance of the oiling device 1. The side wall of the drying and densification device 2 is provided with a protrusion 16, and both sides of the base 5 are provided with slots 17 that engage with the protrusion 16, so that both ends of the oiling device 1 can be engaged with the drying and densification device 2. The engagement of the protrusion 16 with the slots 17 makes the installation of the oiling device 1 and the drying and densification device 2 simple and convenient. The lower end of the protrusion 16 is fixedly connected with symmetrically distributed support blocks 18. Both sides of the base 5 are provided with long grooves 19 that communicate with the slots 17. The support blocks 18 engage with the long grooves 19. By providing the support blocks 18, the oiling device 1 can be supported and longitudinally limited.

[0023] For further details, please refer to Figure 3 As shown, the oiling device 1 includes a base 3, a pad 4, and a base 5 distributed vertically. An oil nozzle is provided on the base 3. The oiling device 1 applies oil to the carbon fiber filament through the oil nozzle. An oil storage chamber 6 and an oil pump 7 are provided inside the base 5. An oil outlet hole 8 is provided inside the oiling device 1, which penetrates the base 3 and the pad 4. The oil outlet hole 8 is connected to the oil nozzle and the oil storage chamber 6. The oil pump 7 transfers the oil in the oil storage chamber 6 through the oil outlet hole 8 to the oil nozzle to apply oil to the carbon fiber filament.

[0024] For further details, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the oil nozzle includes two first oil nozzles 10 and a second oil nozzle 11 located between the two first oil nozzles 10. The oil outlet 8 is located inside the second oil nozzle 11. The first oil nozzles 10 are U-shaped, and the second oil nozzle 11 is annular. The first oil nozzles 10 and the second oil nozzle 11 support the carbon fiber filament. The second oil nozzle 11 performs the oiling process on the carbon fiber filament. The second oil nozzle 11 is provided with multiple spirally arranged guide grooves 13. The oil outlet 8 is eccentrically positioned. A duckbill nozzle 14 is provided at the oil outlet 8 of the second oil nozzle 11. The duckbill nozzle 14 is connected to the oil outlet 8 and sprays the oil through the duckbill nozzle 14. The oil flows along the spirally arranged guide groove 13 to the inner wall of the second oil nozzle 11. The eccentric arrangement allows the oil to fill the entire second oil nozzle 11, ensuring the oiling efficiency of the second oil nozzle 11. Each guide groove 13 is equipped with a baffle 15, which can block the flow of the oil, thereby preventing the oil from splashing and oiling the carbon fiber filaments located in the second oil nozzle 11. Each baffle 15 is staggered and spaced at the same angle, allowing the second oil nozzle 11 to oil the carbon fiber filaments from multiple angles, making the oiling of the second oil nozzle 11 more uniform and having better oiling efficiency and effect.

[0025] For further details, please refer to Figure 3 As shown, a collection trough 9 connected to the oil outlet 8 is provided in the pad 4. A collection hole 12 is provided between the first oil nozzle 10 and the second oil nozzle 11 in the pad 4. The collection hole 12 is connected to the collection trough 9. Excess oil in the second oil nozzle 11 will drip from both sides of the second oil nozzle 11 and flow into the collection trough 9 through the collection hole 12. Then, it will flow into the oil outlet 8 through the collection trough 9, thereby completing the recycling of the oil and reducing the loss of oil. An oil inlet hole 20 connected to the oil storage chamber 6 is provided on the surface of the base 5. During the transfer process, the oil that drips onto the bottom layer will flow into the oil inlet hole 20 and then into the oil storage chamber 6.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[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. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A carbon fiber precursor oiling, drying, and densification apparatus, comprising a drying and densification apparatus (2) and an oiling apparatus (1), characterized in that: The drying and densification device (2) is detachably connected to the oiling device (1). The oiling device (1) includes a base (3), a pad (4), and a base (5) distributed vertically. An oil nozzle is provided on the base (3). An oil storage chamber (6) and an oil pump (7) are provided inside the base (5). An oil outlet hole (8) is provided inside the oiling device (1) that penetrates the base (3) and the pad (4). The oil outlet hole (8) is connected to the oil nozzle and the oil storage chamber (6). An oil inlet hole (20) connected to the oil storage chamber (6) is provided on the surface of the base (5). A collection groove (9) connected to the oil outlet hole (8) is provided inside the pad (4).

2. The carbon fiber precursor oiling, drying, and densification device according to claim 1, characterized in that: The oil nozzle includes two first oil nozzles (10) and a second oil nozzle (11) located between the two first oil nozzles (10). The oil outlet (8) is located inside the second oil nozzle (11). The pad layer (4) is provided with a collection hole (12) between the first oil nozzle (10) and the second oil nozzle (11). The collection hole (12) is connected to the collection groove (9). The first oil nozzle (10) is U-shaped and the second oil nozzle (11) is annular.

3. The carbon fiber precursor oiling, drying, and densification device according to claim 2, characterized in that: The second oil nozzle (11) is provided with a plurality of spirally arranged guide grooves (13), and a duckbill nozzle (14) is provided at the oil outlet (8) of the second oil nozzle (11), and the duckbill nozzle (14) is connected to the oil outlet (8).

4. The carbon fiber precursor oiling, drying, and densification device according to claim 3, characterized in that: Each of the guide grooves (13) is provided with a stop (15), each of the stop (15) is staggered and the same interval angle, and the oil outlet (8) is eccentrically set.

5. The carbon fiber precursor oiling, drying, and densification device according to claim 1, characterized in that: The side wall of the drying and densification device (2) is provided with a protrusion (16), and both sides of the base (5) are provided with a slot (17) that engages with the protrusion (16).

6. The carbon fiber precursor oiling, drying, and densification device according to claim 5, characterized in that: The lower end of the protrusion (16) is fixedly connected to symmetrically distributed support blocks (18), and the base (5) has long grooves (19) on both sides that communicate with the slot (17). The support blocks (18) are engaged with the long grooves (19).

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