An impregnation device for aramid paper production

Abstract

The utility model relates to the technical field of impregnation device, disclose a kind of impregnation device of aramid paper preparation, comprising: aramid paper input unit, for the input of aramid paper;Impregnation unit, including first accommodating groove, for accommodating impregnation liquid, impregnation liquid is used to immerse the aramid paper of input;Cleaning and neutralization unit, including second accommodating groove, for accommodating neutralizing agent, for cleaning after impregnation aramid paper.The utility model is through input, impregnation, cleaning and neutralization dry modular layout, realize the continuous operation of aramid paper processing, and design negative pressure dry mechanism of sticking, hole belt body and negative pressure generating device cooperation, can be through negative pressure adsorption and make aramid paper closely adhere to belt body surface, avoid wrinkle or deformation due to thermal stress in drying process;And both sides dry device synchronous heating, realize aramid paper double-sided uniform drying, shorten drying time, effectively improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of impregnation apparatus technology, and in particular to an impregnation apparatus for preparing aramid paper. Background Technology

[0002] Aramid paper, as a high-performance material, plays an indispensable role in many key fields such as aerospace, electrical insulation, and transportation due to its excellent mechanical properties, thermal stability, and chemical inertness. For example, in the aerospace field, aramid paper-based honeycomb structures are widely used in aircraft wings and fuselages because of their lightweight and high-strength characteristics, which can effectively reduce aircraft weight and improve fuel efficiency and flight performance. In electrical insulation, aramid paper, with its excellent insulation properties, has become an ideal insulating material for high-voltage transformers, motors, and other equipment, ensuring the safe and stable operation of power systems.

[0003] Impregnation is a crucial step in the production and application of aramid paper. Impregnation fills the surface and internal pores of aramid paper fibers with specific impregnation solutions, such as resins and functional additives, significantly improving the paper's properties. For example, impregnation with resin enhances the mechanical strength of aramid paper, improving its wear resistance and corrosion resistance; impregnation with additives possessing specific functions imparts special properties such as flame retardancy and microwave absorption, broadening its application range.

[0004] Chinese Patent CN 215030589 U discloses a film paper impregnation machine, comprising: a housing, an impregnation assembly, and a filtration and circulation assembly; the impregnation assembly includes an impregnation mechanism and a replenishment mechanism; the impregnation assembly enables the impregnation of film paper, and the impregnation assembly is equipped with an impregnation mechanism and a replenishment mechanism. The replenishment mechanism can isolate debris in the impregnation mechanism, and by cleaning the film paper through the replenishment mechanism, the problem of debris adhesion is solved. Furthermore, the filtration and circulation assembly can recycle and filter the impregnation liquid containing debris in the impregnation mechanism, further reducing the debris content of the impregnation liquid and achieving the effect of saving resources and protecting the environment.

[0005] However, in existing technologies, aramid paper is placed in the drying area solely by its own weight or simple support during the drying process. When heated, the internal fiber structure of aramid paper expands or contracts to varying degrees due to changes in thermal stress. Without stable bonding and fixation, the inconsistent changes in thermal stress on different parts of the aramid paper surface can easily lead to wrinkles or deformation of the paper. Utility Model Content

[0006] The purpose of this invention is to solve the problems existing in the prior art by proposing an impregnation device for the preparation of aramid paper.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An impregnation apparatus for preparing aramid paper, comprising:

[0009] Aramid paper input unit, used for inputting aramid paper;

[0010] The impregnation unit includes a first receiving tank for containing an impregnation liquid for impregnating the input aramid paper;

[0011] The cleaning and neutralizing unit includes a second receiving tank for containing a neutralizing agent for cleaning the impregnated aramid paper;

[0012] A guiding unit, located between the impregnation unit and the cleaning and neutralization unit, is used to feed the impregnated aramid paper into the cleaning and neutralization unit;

[0013] The drying unit includes:

[0014] A perforated tape input assembly is used to input perforated tape that is bonded to aramid paper;

[0015] Two drying units are respectively set on both sides of the aramid paper;

[0016] Two sets of negative pressure generating devices are set on the side of the drying device away from the direction of aramid paper conveying, and are used to generate negative pressure on the aramid paper so that the aramid paper adheres to the perforated belt.

[0017] Preferably, the aramid paper input unit includes a pre-drying chamber and a first guide roller, through which the aramid paper passes and enters the impregnation unit.

[0018] Preferably, the first receiving groove is provided with a second guide roller and a third guide roller. The second guide roller and the third guide roller are located at the bottom of the first receiving groove. The aramid paper enters the guiding unit by passing through the side of the second guide roller near the side wall of the first receiving groove, the bottom of the second guide roller, the bottom of the third guide roller, and the side of the third guide roller near the side wall of the first receiving groove in sequence.

[0019] Preferably, the guiding unit includes a fourth guide roller, a fifth guide roller, and a sixth guide roller, and the aramid paper sequentially passes through the top of the fourth guide roller, the bottom of the fifth guide roller, and the top of the sixth guide roller before entering the cleaning and neutralization unit.

[0020] Preferably, the second receiving tank is provided with a seventh guide roller and an eighth guide roller. The seventh guide roller and the eighth guide roller are located at the bottom of the second receiving tank. The aramid paper enters the drying unit by passing the side of the seventh guide roller near the side wall of the second receiving tank, the bottom of the seventh guide roller, the bottom of the eighth guide roller, and the side of the eighth guide roller near the side wall of the second receiving tank in sequence.

[0021] Preferably, the perforated tape input assembly includes a first conveying roller and a second conveying roller, and the perforated tape passes sequentially through the first conveying roller and the second conveying roller to bond with the aramid paper.

[0022] Preferably, a ninth guide roller, a tenth guide roller, and a thirteenth guide roller are provided on the side of the second conveyor roller away from the first conveyor roller, and the aramid paper is bonded to the perforated belt through the thirteenth guide roller, the ninth guide roller, and the tenth guide roller.

[0023] Preferably, a guide assembly is provided between the two sets of drying devices. The guide assembly includes an eleventh guide roller and a twelfth guide roller. The aramid paper and the perforated belt enter the separation assembly through the guide assembly, and the aramid paper and the perforated belt are separated by the separation assembly.

[0024] Preferably, one of the drying devices is located on the side close to the first conveying roller, and the negative pressure generating device corresponding to the drying device is located between the drying device and the eleventh guide roller; the other drying device is located on the side close to the twelfth guide roller, and the negative pressure generating device corresponding to the drying device is located between the drying device and the separation component.

[0025] Preferably, a cleaning roller assembly is provided on one side of the separation component, the cleaning roller assembly comprising two cleaning rollers located on both sides of the aramid paper.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] This invention achieves continuous processing of aramid paper through a modular layout of input, impregnation, cleaning, neutralization, and drying. It also features a negative pressure bonding and drying mechanism, in which a perforated belt works in conjunction with a negative pressure generating device to adhere the aramid paper tightly to the belt surface through negative pressure adsorption, preventing wrinkles or deformation caused by thermal stress during the drying process. Simultaneous heating by the drying devices on both sides ensures uniform drying of the aramid paper on both sides, shortening the drying time and effectively improving production efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of Embodiment 1 of an impregnation device for preparing aramid paper according to the present invention;

[0029] Figure 2 This is a schematic diagram of Embodiment 2 of an impregnation device for preparing aramid paper according to the present invention.

[0030] In the diagram: 1. Aramid paper input unit; 2. Impregnation unit; 3. First receiving tank; 4. Cleaning and neutralization unit; 5. Second receiving tank; 6. Guiding unit; 7. Drying unit; 8. Perforated belt input assembly; 9. Drying device; 10. Negative pressure generating device; 11. Perforated belt; 12. Aramid paper; 13. Pre-drying box; 14. First guide roller; 15. Thirteenth guide roller; 16. Second guide roller; 17. Third guide roller; 18. Fourth guide roller; 19. Fifth guide roller; 20. Sixth guide roller; 21. Seventh guide roller; 22. Eighth guide roller; 23. Ninth guide roller; 24. Tenth guide roller; 25. First conveyor roller; 26. Second conveyor roller; 27. Eleventh guide roller; 28. Twelfth guide roller; 29. ​​Third conveyor roller; 30. Fourth conveyor roller; 31. Thirteenth guide roller; 32. Cleaning roller. Detailed Implementation

[0031] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0032] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; 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 utility model based on the specific circumstances.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., 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, the 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.

[0035] Reference Figure 1 An impregnation apparatus for preparing aramid paper, comprising:

[0036] Aramid paper input unit 1 is used for inputting aramid paper 12;

[0037] Impregnation unit 2 includes a first receiving tank 3 for receiving impregnation liquid, which is used to impregnate the input aramid paper 12;

[0038] The cleaning and neutralizing unit 4 includes a second receiving tank 5 for containing a neutralizing agent for cleaning the impregnated aramid paper 12.

[0039] The guide unit 6 is disposed between the impregnation unit 2 and the cleaning and neutralization unit 4, and is used to feed the impregnated aramid paper 12 into the cleaning and neutralization unit 4;

[0040] Drying unit 7 includes:

[0041] The perforated tape input component 8 is used to input the perforated tape 11 to be bonded to the aramid paper 12;

[0042] Two sets of drying devices 9 are respectively set on both sides of the aramid paper 12;

[0043] Two sets of negative pressure generating devices 10 are set on the side of the drying device 9 away from the conveying direction of the aramid paper 12, and are used to generate negative pressure on the aramid paper 12 so that the aramid paper 12 adheres to the perforated belt 11.

[0044] This application discloses an impregnation apparatus for preparing aramid paper, comprising an aramid paper input unit 1, an impregnation unit 2, a cleaning and neutralization unit 4, and a drying unit 7 connected in sequence. The aramid paper input unit 1 is used to input raw aramid paper 12 into the apparatus. The impregnation unit 2 is equipped with a first receiving tank 3 containing an alkaline impregnation solution (e.g., KOH) to improve fiber properties, ensuring the aramid paper is fully submerged during transit. This achieves thorough wetting and penetration of the impregnation solution into the paper's interior and surface, enhancing the mechanical properties of the aramid paper 12 (such as tensile strength and interlayer bonding). The cleaning and neutralization unit 4 is equipped with a second receiving tank 5 containing a neutralizing agent, effectively removing residual impregnation solution from the aramid paper and adjusting the pH value of the paper surface to suit subsequent processing and applications. A guiding unit 6 is installed within the impregnation unit. Between the staining unit 2 and the cleaning and neutralization unit 4, the impregnated aramid paper is smoothly guided to the next process. After neutralization and cleaning, the aramid paper 12 enters the drying unit 7. The drying unit 7 includes a perforated belt input component 8, two sets of drying devices 9 located on opposite sides of the aramid paper 12, and two sets of negative pressure generating devices 10 located on the side of the drying device 9 away from the conveying direction. The perforated belt input component 8 continuously supplies a porous substrate that adheres to the aramid paper 12. The drying device 9 provides a uniform heat source through double-sided synchronous heating. The negative pressure generating device 10 generates an adsorption force to tightly adhere the aramid paper 12 to the surface of the perforated belt 11, thereby preventing the paper from warping, wrinkling, or deforming under thermal stress, ensuring the flatness and thickness uniformity of the paper, and providing quality assurance for the subsequent application of the aramid paper.

[0045] The impregnation device for preparing aramid paper described in this application improves preparation efficiency and product consistency by setting a zoned continuous processing technology and integrating the entire process from impregnation, cleaning and neutralization to drying. The immersion impregnation enhances the bonding between the resin or functional additives and the paper fibers, improving the mechanical strength and functional performance of the paper. The cleaning and neutralization unit 4 effectively removes residual alkali and adjusts the pH value, reducing the risk of adverse reactions in subsequent processing. In particular, during the drying process, the perforated belt 11 and the negative pressure generating device 10 work together to keep the aramid paper 12 in a continuous adhered state during heat treatment, effectively suppressing edge curling or wrinkling caused by thermal stress, achieving uniform drying of both sides of the aramid paper 12, shortening the drying time, and improving production efficiency.

[0046] As a preferred example of this application, the aramid paper input unit 1 includes a pre-drying box 13 and a first guide roller 14. The aramid paper 12 passes through the pre-drying box 13 and the first guide roller 14 into the impregnation unit 2. The pre-drying box 13 can remove moisture or volatiles from the surface of the aramid paper 12, avoiding the dilution of the impregnation solution concentration by the wet paper web and affecting the resin adsorption effect; it controls the initial dryness of the aramid paper 12 to ensure stable resin absorption during the impregnation process and improve the consistency of the finished product. The first guide roller 14 guides the paper web to smoothly enter the impregnation unit 2, reducing the risk of paper web deviation or folding, and is especially suitable for the precise transmission of high-fiber aramid paper 12.

[0047] As a preferred example of this application, the first receiving tank 3 is provided with a second guide roller 16 and a third guide roller 17. The second guide roller 16 and the third guide roller 17 are located at the bottom of the first receiving tank 3. The aramid paper 12 enters the guiding unit 6 by passing through the side of the second guide roller 16 near the side wall of the first receiving tank 3, the bottom of the second guide roller 16, the bottom of the third guide roller 17, and the side of the third guide roller 17 near the side wall of the first receiving tank 3 in sequence. The aramid paper 12 can extend its residence time in the impregnation liquid by passing through the second guide roller 16 and the third guide roller 17, ensuring that the fiber fully absorbs the resin, which is especially suitable for deep impregnation of thick aramid paper 12. The bottom contact design of the guide rollers ensures that the paper web is completely submerged below the liquid surface, avoiding insufficient impregnation due to buoyancy.

[0048] As a preferred example of this application, the guiding unit 6 includes a fourth guide roller 18, a fifth guide roller 19, and a sixth guide roller 20. The aramid paper 12 passes sequentially through the top of the fourth guide roller 18, the bottom of the fifth guide roller 19, and the top of the sixth guide roller 20 before entering the cleaning and neutralizing unit 4. The top guidance of the fourth guide roller 18 and the sixth guide roller 20, combined with the bottom guidance of the fifth guide roller 19, forms a wavy transmission path. The limiting effect of the guide rollers forces the correction of the paper web deviation, ensuring that the paper web accurately enters the cleaning and neutralizing unit 4 after impregnation. Furthermore, the wavy path allows the aramid paper 12 to release the internal stress after impregnation during the transmission process.

[0049] As a preferred example of this application, the second receiving tank 5 is provided with a seventh guide roller 21 and an eighth guide roller 22. The seventh guide roller 21 and the eighth guide roller 22 are located at the bottom of the second receiving tank 5. The aramid paper 12 enters the drying unit 7 by passing the side of the seventh guide roller 21 near the side wall of the second receiving tank 5, the bottom of the seventh guide roller 21, the bottom of the eighth guide roller 22, and the side of the eighth guide roller 22 near the side wall of the second receiving tank 5 in sequence. The seventh guide roller 21 and the eighth guide roller 22 can increase the residence time of the aramid paper 12 in the neutralizing agent, ensure that the residual impregnation liquid (such as acidic or alkaline components) reacts fully, improve the cleaning efficiency, and avoid chemical residues affecting the insulation performance of the aramid paper 12 or the subsequent drying effect.

[0050] As a preferred example of this application, the perforated tape input assembly 8 includes a first conveying roller 25 and a second conveying roller 26. The perforated tape 11 passes sequentially through the first conveying roller 25 and the second conveying roller 26 to adhere to the aramid paper 12. In this example, when the aramid paper enters the drying unit, the perforated tape begins to operate under the drive of the first conveying roller 25 and the second conveying roller 26. The perforated tape 11 passes sequentially through the first conveying roller 25 and the second conveying roller 26 along a predetermined S-shaped path. During this process, the perforated tape 11 adheres tightly to the aramid paper 12, effectively preventing the aramid paper from shifting or wrinkling during the drying process. In the example of this application, the perforated belt 11 can be a metal mesh belt or a plastic perforated belt, which can be flexibly selected according to actual production needs to adapt to different working environments and conditions. The perforated structure not only enhances air circulation, but also facilitates negative pressure adsorption and penetration, improving the stability of aramid paper during the drying process. Combined with the double-sided heating of the drying device and the negative pressure generating device, it ensures that the aramid paper adheres tightly to the surface of the perforated belt during the drying process, keeping the surface flat and effectively suppressing undesirable phenomena such as edge curling and wrinkles caused by thermal stress, thereby improving the physical appearance and overall performance of the final product.

[0051] As a preferred example of this application, the second conveying roller 26 is provided with a ninth guide roller 23, a tenth guide roller 24 and a thirteenth guide roller 15 on the side away from the first conveying roller 25. The aramid paper 12 is bonded to the perforated belt 11 through the thirteenth guide roller 15, the ninth guide roller 23 and the tenth guide roller 24. The tenth guide roller 24 can form a pressing effect with the second conveying roller 26 to remove the air between the aramid paper 12 and the perforated belt 11 and form a tight contact.

[0052] As a preferred example of this application, a guide assembly is provided between the two sets of drying devices 9. The guide assembly includes an eleventh guide roller 27 and a twelfth guide roller 28. The aramid paper 12 and the perforated tape 11 enter the separation assembly through the guide assembly. The aramid paper 12 and the perforated tape 11 are separated by the separation assembly, which includes a third conveying roller 29, a thirteenth guide roller 31, and a fourth conveying roller 30. The perforated tape 11 passes through the third conveying roller 29, the thirteenth guide roller 31, and the fourth conveying roller 30 in sequence to separate from the aramid paper 12. The aramid paper 12 passes through the third conveying roller 29 in sequence and enters between two cleaning rollers 32. A cleaning roller assembly is provided on one side of the separation assembly. The cleaning roller assembly includes two cleaning rollers 32, which are located on both sides of the aramid paper 12. The cleaning rollers 32 (such as soft rubber rollers or dust-adhesive rollers) can remove residual tape debris, dried adhesive residue, or fiber fuzz from the surface of the aramid paper 12, improve the surface smoothness of the finished product, and meet the cleanliness requirements of high-precision fields (such as electronic insulating paper).

[0053] As a preferred example of this application, one of the drying devices 9 is disposed on the side near the first conveying roller 25, and the negative pressure generating device 10 corresponding to the drying device 9 is disposed between the drying device 9 and the eleventh guide roller 27; the other drying device 9 is disposed on the side near the twelfth guide roller 28, and the negative pressure generating device 10 corresponding to the drying device 9 is disposed between the drying device 9 and the separation component. The perforated belt 11 cooperates with the negative pressure generating device 10, and the aramid paper 12 is tightly attached to the surface of the belt by negative pressure adsorption, so as to avoid wrinkles or deformation caused by thermal stress during the drying process. The drying device 9 dries it. The positional arrangement of the drying device 9 and the negative pressure generating device 10 allows the aramid paper 12 dried by the drying device 9 to be moved to the negative pressure generating device 10, preventing the impregnation liquid and neutralizing cleaning liquid from being sucked into the negative pressure generating device 10.

[0054] like Figure 2 As shown, in another embodiment, the drying device 9 and the corresponding negative pressure generating device 10 can be respectively set on both sides of the aramid paper 12 and the perforated belt 11 that are bonded together. The negative pressure position is matched with the heat source of the drying device 9 to form a "adsorption-heating-penetration" circulating airflow. The hot air blown out by the drying device 9 is sucked in by the negative pressure through the pores of the perforated belt 11, so as to achieve double-sided penetration drying of the aramid paper 12 and improve the drying effect.

[0055] It should be noted that the drying device 9 uses a hot air drying device to achieve non-contact drying with the aramid paper 12.

[0056] Compared with the prior art, this application designs a perforated tape body 11 that works in conjunction with a negative pressure generating device 10. The negative pressure adsorption makes the aramid paper 12 adhere tightly to the surface of the tape body, avoiding wrinkles or deformation caused by thermal stress during the drying process. The drying devices 9 on both sides heat simultaneously, achieving uniform drying of the aramid paper 12 on both sides, shortening the drying time and improving production efficiency.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An impregnation apparatus for preparing aramid paper, characterized in that: include: Aramid paper input unit (1) is used for inputting aramid paper (12); The impregnation unit (2) includes a first receiving tank (3) for containing impregnation liquid, which is used to impregnate the input aramid paper (12). The cleaning and neutralizing unit (4) includes a second receiving tank (5) for containing a neutralizing agent for cleaning the impregnated aramid paper (12). A guide unit (6) is disposed between the impregnation unit (2) and the cleaning and neutralization unit (4) for feeding the impregnated aramid paper (12) into the cleaning and neutralization unit (4); The drying unit (7) includes: A perforated tape input assembly (8) is used to input the perforated tape (11) to be bonded to the aramid paper (12); Two sets of drying devices (9) are respectively set on both sides of the aramid paper (12); Two sets of negative pressure generating devices (10) are set on the side of the drying device (9) away from the conveying direction of the aramid paper (12) to generate negative pressure on the aramid paper (12) so that the aramid paper (12) adheres to the perforated belt (11).

2. The impregnation apparatus for preparing aramid paper according to claim 1, characterized in that: The aramid paper input unit (1) includes a pre-drying box (13) and a first guide roller (14). The aramid paper (12) passes through the pre-drying box (13) and the first guide roller (14) into the impregnation unit (2).

3. The impregnation apparatus for preparing aramid paper (12) according to claim 2, characterized in that: The first receiving groove (3) is provided with a second guide roller (16) and a third guide roller (17). The second guide roller (16) and the third guide roller (17) are located at the bottom of the first receiving groove (3). The aramid paper (12) passes through the side of the second guide roller (16) near the side wall of the first receiving groove (3), the bottom of the second guide roller (16), the bottom of the third guide roller (17), and the side of the third guide roller (17) near the side wall of the first receiving groove (3) in sequence and enters the guiding unit (6).

4. The impregnation apparatus for preparing aramid paper according to claim 3, characterized in that: The guiding unit (6) includes a fourth guide roller (18), a fifth guide roller (19) and a sixth guide roller (20). The aramid paper (12) passes through the top of the fourth guide roller (18), the bottom of the fifth guide roller (19) and the top of the sixth guide roller (20) in sequence before entering the cleaning and neutralizing unit (4).

5. The impregnation apparatus for preparing aramid paper according to claim 4, characterized in that: The second receiving tank (5) is provided with a seventh guide roller (21) and an eighth guide roller (22). The seventh guide roller (21) and the eighth guide roller (22) are located at the bottom of the second receiving tank (5). The aramid paper (12) passes through the side of the seventh guide roller (21) near the side wall of the second receiving tank (5), the bottom of the seventh guide roller (21), the bottom of the eighth guide roller (22), and the side of the eighth guide roller (22) near the side wall of the second receiving tank (5) in sequence before entering the drying unit (7).

6. The impregnation apparatus for preparing aramid paper according to claim 5, characterized in that: The perforated tape input assembly (8) includes a first conveying roller (25) and a second conveying roller (26). The perforated tape (11) passes through the first conveying roller (25) and the second conveying roller (26) in sequence to adhere to the aramid paper (12).

7. The impregnation apparatus for preparing aramid paper according to claim 6, characterized in that: The second conveyor roller (26) is provided with a ninth guide roller (23), a tenth guide roller (24) and a thirteenth guide roller (15) on the side away from the first conveyor roller (25). The aramid paper (12) is attached to the perforated belt (11) through the thirteenth guide roller (15), the ninth guide roller (23) and the tenth guide roller (24).

8. The impregnation apparatus for preparing aramid paper according to claim 7, characterized in that: A guide assembly is provided between the two sets of drying devices (9). The guide assembly includes an eleventh guide roller (27) and a twelfth guide roller (28). The aramid paper (12) and the perforated belt (11) enter the separation assembly through the guide assembly. The aramid paper (12) and the perforated belt (11) are separated by the separation assembly.

9. The impregnation apparatus for preparing aramid paper according to claim 8, characterized in that: One of the drying devices (9) and the corresponding negative pressure generating device (10) is disposed between the second conveying roller (26) and the eleventh guide roller (27), and the other drying device (9) and the corresponding negative pressure generating device (10) are disposed between the twelfth guide roller (28) and the separation assembly.

10. The impregnation apparatus for preparing aramid paper according to claim 9, characterized in that: A cleaning roller assembly is provided on one side of the separation component. The cleaning roller assembly includes two cleaning rollers (32), which are located on both sides of the aramid paper (12).

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