Impregnating compound coating device and glass fiber production system with impregnating compound coating device

Abstract

The utility model provides an impregnating compound coating device and a glass fiber production system with the same, the impregnating compound coating device is used for coating an impregnating compound on glass fiber, the impregnating compound coating device comprises an oil inlet structure, and the bottom of the oil inlet structure is provided with an oil inlet used for installing an oil inlet pipe head; the cover plate is detachably mounted on the oil inlet structure so as to cover the oil inlet; an oil return cavity is formed in the oil return structure, an oil inlet cavity is formed in the oil inlet structure, the oil return structure is detachably connected with the oil inlet structure, an oil return opening is formed in the bottom of the oil return structure, and the oil return opening is communicated with the oil inlet pipe head through homogenizing equipment; wherein at least part of the surface, used for being in contact with an impregnating compound, of the oil inlet structure and at least part of the surface, used for being in contact with the impregnating compound, of the oil return structure are coated with non-stick coatings, and the non-stick coatings are high-molecular polymers or ceramic coatings.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber production, and more specifically, to an impregnating agent coating device and a glass fiber production system having the same. Background Technology

[0002] Currently, in the glass fiber production process, to protect the glass fiber filaments and better modify their properties, a sizing agent needs to be coated onto the glass fibers. Molten glass is drawn into glass fibers through a spinneret, then coated with sizing agent on an oiling roller, bundled by a bundling device, and finally wound into shape. Therefore, the sizing agent coating device is a core and crucial accessory in the glass fiber production process.

[0003] However, sizing agents are chemical oils containing film-forming agents, lubricants, coupling agents, etc. In actual production, sizing agents can form a difficult-to-clean skin on the surface of the coating equipment, affecting its use. Fiberglass companies require a significant amount of manpower to replace and clean the sizing agent coating equipment in daily use, which is time-consuming and labor-intensive. Furthermore, cleaning requires soaking in large amounts of chemical cleaning agents, which is not environmentally friendly. Utility Model Content

[0004] The main objective of this invention is to provide an impregnating agent coating device and a glass fiber production system having the same, so as to solve the technical problem in the prior art that the impregnating agent is prone to forming a skin during the glass fiber impregnation process, which affects its use.

[0005] To achieve the above objectives, according to one aspect of the present invention, a sizing agent coating apparatus is provided for coating glass fibers with a sizing agent. The sizing agent coating apparatus includes:

[0006] The oil inlet structure is used to receive the wetting agent, and the bottom of the oil inlet structure is provided with an oil inlet for installing the oil inlet pipe head;

[0007] A cover plate is detachably mounted on the oil inlet structure to cover the oil inlet.

[0008] The oil return structure has an internal oil return chamber, and the oil inlet structure has an internal oil inlet chamber. The oil return structure and the oil inlet structure are detachably connected. The bottom of the oil return structure is provided with an oil return port, and the oil return port is connected to the oil inlet pipe head through a homogenization device.

[0009] The oil inlet structure and the oil return structure are both coated with a non-stick coating, which is a polymer or ceramic coating.

[0010] Furthermore, the oil inlet chamber includes an oil inlet groove, the opening of which is located above the oil inlet structure; the oil return chamber includes an oil return groove, the opening of which is located above the oil return structure; and at least a portion of the oil inlet groove is located within the oil return groove.

[0011] Furthermore, multiple overflow ports are provided on the side wall of the oil inlet structure. Each overflow port extends vertically downward along the top of the side wall of the oil inlet structure, and the oil inlet chamber is connected to the return oil chamber through the overflow port.

[0012] Furthermore, the cover plate includes a top cover and a side cover. The top cover extends along the length of the oil inlet structure, and the side cover is perpendicular to the top cover. The top cover is positioned above the oil inlet, and the side cover is connected to the oil inlet structure.

[0013] Furthermore, the bottom of the oil inlet structure is provided with multiple oil inlets, each of which is equipped with an oil inlet pipe head. The multiple oil inlets are evenly distributed along the length of the oil inlet structure, and a cover plate is placed over the multiple oil inlets.

[0014] Furthermore, the bottom of the oil inlet structure is provided with a first connecting member, and the bottom of the oil return chamber of the oil return structure is provided with a second connecting part. The first connecting member and the second connecting part are correspondingly arranged so that the oil inlet structure and the oil return structure can be detachably connected.

[0015] Furthermore, the vertical height of the oil inlet structure is less than the vertical height of the oil return structure, and the horizontal plane at which the top end face of the oil inlet structure is located is lower than the horizontal plane at which the top end face of the oil return structure is located.

[0016] Furthermore, the inner wall of the oil inlet chamber of the oil inlet structure, the outer side wall of the oil inlet structure, and the inner wall of the oil return chamber of the oil return structure are all provided with a non-stick coating.

[0017] According to another aspect of the present invention, a glass fiber production system is provided, comprising:

[0018] The sizing agent coating device is the sizing agent coating device described above. The side wall of the oil return structure is provided with a positioning structure so as to be fixedly connected to the process position of the glass fiber production system through the positioning structure.

[0019] Applying the technical solution of this utility model, the oil inlet structure is designed as a container structure with an open top and multiple oil inlets at the bottom. These inlets are connected to an external wetting agent storage tank or supply system via inlet pipe heads. The cover plate is designed as a detachable structure, connected to the oil inlet structure via hinges, snaps, or threads, allowing for easy disassembly and installation for regular cleaning and maintenance. The cover plate has a top cover and side covers. The top cover covers the oil inlets, while the side covers fit tightly against the side walls of the oil inlet structure to prevent wetting agent splashing. The combination of the top and side covers creates a good seal, ensuring uniform wetting agent coating. The inner and outer surfaces of both the oil inlet and return structures are coated with a non-stick coating, effectively preventing the formation of a difficult-to-clean skin on the structural surface, thus solving the technical problem in existing technologies where the wetting agent easily forms a skin during glass fiber impregnation, affecting its use. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A perspective schematic diagram of one embodiment of the wetting agent coating apparatus according to the present invention is shown;

[0022] Figure 2 A perspective view of the oil inlet structure and cover plate according to one embodiment of the wetting agent coating device of the present invention is shown;

[0023] Figure 3 A perspective view of the oil inlet structure according to an embodiment of the wetting agent coating device of the present invention is shown;

[0024] Figure 4 A perspective view of the oil return structure of an embodiment of the wetting agent coating device according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 1. Oil inlet structure; 11. Oil inlet groove; 2. Oil return structure; 21. Oil return groove; 3. Cover plate; 31. Top cover; 32. Side cover; 41. First connecting piece; 42. Second connecting part; 5. Oil inlet; 51. Oil inlet pipe head; 6. Oil return port; 61. Oil return pipe; 7. Overflow port; 8. Positioning structure; Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 4 As shown, Embodiment 1 of this utility model provides an impregnating agent coating device for coating glass fibers with an impregnating agent. The impregnating agent coating device includes an oil inlet structure 1 for receiving the impregnating agent, and an oil inlet 5 for installing an oil inlet pipe head 51 is provided at the bottom of the oil inlet structure 1; a cover plate 3 is detachably installed on the oil inlet structure 1 to cover the oil inlet 5; and an oil return structure 2 with an oil return chamber inside. The oil inlet structure 1 has an oil inlet chamber inside, and the oil return structure 2 is detachably connected to the oil inlet structure 1. An oil return port 6 is provided at the bottom of the oil return structure 2, and the oil return port 6 is connected to the oil inlet pipe head 51 through a purification device. At least a portion of the surface of the oil inlet structure 1 that is in contact with the impregnating agent and at least a portion of the surface of the oil return structure 2 that is in contact with the impregnating agent are coated with a non-stick coating. The non-stick coating is made of a polymer material or a ceramic material.

[0029] The sizing agent coating device provided in this embodiment of the invention can effectively prevent the sizing agent from forming a difficult-to-clean skin on the surface of the structure, thereby solving the technical problem in the prior art where the sizing agent easily forms a skin during the glass fiber impregnation process, which affects its use.

[0030] In the above embodiment, the oil inlet structure 1 is designed as a container structure with an open top and multiple oil inlets 5 at the bottom. The oil inlets 5 are connected to an external wetting agent storage tank or supply system via an oil inlet pipe head 51. The cover plate 3 is designed as a detachable structure, which is connected to the oil inlet structure 1 by means of hinges, snaps, or threads, and can be easily disassembled and installed for regular cleaning and maintenance. The cover plate 3 is provided with a top cover 31 and a side cover 32. The top cover 31 is used to cover the oil inlets 5, while the side cover 32 fits tightly against the side wall of the oil inlet structure 1 to prevent wetting agent splashing. At the same time, the combination of the top cover 31 and the side cover 32 forms a good sealing effect, ensuring uniform coating of the wetting agent. The inner and outer surfaces of the oil inlet structure 1 and the oil return structure 2 are coated with a non-stick coating to prevent the wetting agent from forming a difficult-to-clean crust on the structural surface.

[0031] The detachable design of the cover plate 3 and the use of a non-stick coating reduce the frequency of maintenance and replacement, lower production costs, and improve production efficiency. The detachable connection between the oil inlet structure 1 and the oil return structure 2 not only ensures the stability of the device but also provides operational flexibility, facilitating on-site installation, adjustment, and maintenance. In summary, the wetting agent coating device of this invention has significant advantages in terms of coating uniformity, ease of cleaning, environmental friendliness, and maintenance costs, providing a more efficient and environmentally friendly solution for glass fiber production.

[0032] In some embodiments, the non-stick coating can be a Teflon (polytetrafluoroethylene) or ceramic coating. This coating possesses excellent chemical stability and low surface tension, effectively preventing the formation of a difficult-to-clean skin on the structural surface by the wetting agent. Simultaneously, this coating also exhibits good wear and scratch resistance, extending the equipment's service life. The application of non-stick coatings significantly improves cleaning cycles, reduces the labor intensity of periodic cleaning, and allows for cleaning with water, eliminating the need for chemical cleaning agents, thus promoting environmentally friendly production and reducing environmental pollution.

[0033] Specifically, the oil inlet chamber includes an oil inlet groove 11, the opening of which is located above the oil inlet structure 1. The oil return chamber includes an oil return groove 21, the opening of which is located above the oil return structure 2. The opening of the oil inlet groove 11 is smaller than the opening of the oil return groove 21, and at least a portion of the oil inlet groove 11 is located within the oil return groove 21. The oil inlet groove 11 is an elongated groove, and the wetting agent flows out of the oil inlet groove 11 and then into the oil return structure 2 below. The design of the oil inlet groove 11 embedded in the oil return groove 21 effectively ensures the stability of the liquid level within the oil inlet groove 11, avoiding uneven coating caused by liquid level fluctuations and splashing of the wetting agent from the oil inlet groove 11, thus improving the stability and reliability of the production process.

[0034] Specifically, the sidewall of the oil inlet structure 1 is provided with multiple overflow ports 7. Each overflow port 7 extends vertically downwards along the top of the sidewall of the oil inlet structure 1. The multiple overflow ports 7 are evenly distributed along the length of the oil inlet structure 1. The oil inlet chamber is connected to the return oil chamber through the overflow ports 7. The multiple overflow ports 7 are evenly distributed on the sidewall of the oil inlet structure 1 and arranged along the length of the oil inlet structure 1. Each overflow port 7 starts from the top of the sidewall and extends vertically downwards. This design can keep the wetting agent liquid level in the oil inlet chamber stable. When the liquid level rises to the overflow port 7, the excess wetting agent will flow into the return oil chamber through the overflow port 7, realizing automatic liquid level adjustment and ensuring the stability and continuity of the coating process.

[0035] The oil inlet chamber and the oil return chamber are connected by an overflow port 7. When the wetting agent level in the oil inlet chamber exceeds the set overflow port 7 height, the excess wetting agent will automatically overflow into the oil return chamber, and then return to the wetting agent storage tank through the oil return port 6 and the purification equipment, forming a circulation system and effectively reducing wetting agent waste. The size and number of overflow ports 7 are determined based on factors such as the size of the oil inlet chamber and the flow rate of the wetting agent. An appropriate size and number of overflow ports 7 can effectively balance the liquid level in the oil inlet chamber, avoiding uneven coating or wetting agent waste caused by excessively high or low liquid levels.

[0036] Specifically, the cover plate 3 includes a top cover 31 and a side cover 32. The top cover 31 extends along the length of the oil inlet structure 1, and the side cover 32 is perpendicular to the top cover 31. The top cover 31 covers the oil inlet 5, and the side cover 32 is connected to the oil inlet structure 1. The cover plate 3 is designed as a two-part structure comprising the top cover 31 and the side cover 32. The top cover 31 extends along the length of the oil inlet structure 1, and its main function is to cover the oil inlet 5 to prevent splashing and evaporation of the wetting agent, while also helping to control the temperature during the coating process. The side cover 32 is perpendicular to the top cover 31 and fits tightly against the side wall of the oil inlet structure 1, forming a closed environment, further reducing unnecessary loss of the wetting agent and maintaining the high efficiency of the coating process.

[0037] The top cover 31 is sized to perfectly cover the oil inlet 5, ensuring the sealing of the wetting agent when it enters the oil inlet structure 1, preventing the entry of external air, reducing the impact of airborne impurities on the wetting agent, and maintaining the purity of the wetting agent. The side cover 32 is designed to match the shape of the side wall of the oil inlet structure 1, forming a good seal to prevent splashing of the wetting agent during the coating process. It also facilitates the overall disassembly and assembly of the cover plate 3 without interfering with the normal operation of the oil inlet structure 1. In this embodiment, the cover plate 3 is an L-shaped plate, one end of the top cover 31 is detachably connected to the side wall of the oil inlet structure 1, and the side cover 32 is located on the edge of the other side of the top cover 31.

[0038] Specifically, the oil inlet structure 1 has multiple oil inlets 5 at its bottom, each equipped with an oil inlet pipe head 51. These inlets 5 are evenly distributed along the length of the oil inlet structure 1, and a cover plate 3 is placed over them. Each oil inlet 5 is connected to an external wetting agent supply system via an independent oil inlet pipe head 51. This multi-point oil inlet design ensures uniform distribution of the wetting agent within the oil inlet structure 1, allowing the glass fiber to be fully and evenly coated during transport. The oil inlet pipe head 51 is tightly connected to the oil inlet 5, ensuring a tight seal during transport and preventing leakage. The oil inlet pipe head 51 also allows for adjustment of the wetting agent flow rate to meet the needs of different production conditions. The cover plate 3 covers the multiple oil inlets 5 to prevent liquid splashing.

[0039] In some embodiments, a plurality of oil return ports 6 are provided at the bottom of the oil return structure 2, and each oil return port 6 is provided with an oil return pipe 61. Each oil return pipe 61 is evenly arranged along the length direction of the oil return structure 2, and each oil return pipe 61 is connected to the homogenization device.

[0040] Specifically, the bottom of the oil inlet structure 1 is provided with a first connecting member 41, and the bottom of the oil return chamber of the oil return structure 2 is provided with a second connecting part 42. The first connecting member 41 and the second connecting part 42 are correspondingly arranged to allow the oil inlet structure 1 and the oil return structure 2 to be detachably connected. The first connecting member 41, which can be an external thread, a snap-fit, or other detachable connection structure, is located at the bottom of the oil return chamber of the oil return structure 2. The second connecting part 42, which can be an internal thread, a groove, or other connection part that matches the first connecting member 41, is correspondingly provided at the bottom of the oil return chamber of the oil return structure 2. The first connecting member 41 and the second connecting part 42 are precisely machined to ensure dimensional matching and structural stability. The connection between the first connecting member 41 and the second connecting part 42 can be a threaded connection, a snap-fit ​​connection, or other quick-disassembly and assembly method. This design allows the oil inlet structure 1 and the oil return structure 2 to be quickly and easily disassembled and separated when cleaning or maintenance is required, simplifying operation and facilitating cleaning and inspection by personnel. The detachable connection design allows the oil inlet structure 1 and the oil return structure 2 to be easily separated, which greatly reduces the difficulty of cleaning and maintenance, reduces cleaning time, and improves production efficiency.

[0041] Specifically, the vertical height of the oil inlet structure 1 is less than the vertical height of the oil return structure 2, and the horizontal plane of the top end face of the oil inlet structure 1 is lower than the horizontal plane of the top end face of the oil return structure 2. This difference in vertical height between the oil inlet structure 1 and the oil return structure 2 ensures that the top end face of the oil inlet structure 1 is located on a lower horizontal plane than the top end face of the oil return structure 2. This design utilizes the principle of gravity, allowing the wetting agent to flow naturally from the oil inlet structure 1 to the oil return structure 2 without the need for an additional power unit, reducing energy consumption and improving the efficiency of the device. The lower design of the oil inlet structure 1 helps control the wetting agent level. When the wetting agent enters the oil inlet structure 1 through the oil inlet 5, excess wetting agent will naturally flow into the oil return structure 2, preventing excessive accumulation in the oil inlet structure 1 and thus avoiding uneven coating or wetting agent waste caused by excessively high liquid levels.

[0042] Specifically, the inner wall of the oil inlet chamber of oil inlet structure 1, the outer side wall of oil inlet structure 1, and the inner wall of the oil return chamber of oil return structure 2 are all provided with a non-stick coating. The adhesive coating is uniformly applied to the inner wall of the oil inlet chamber of oil inlet structure 1, the outer side wall of oil inlet structure 1, and the inner wall of the oil return chamber of oil return structure 2. This comprehensive coverage design ensures that the wetting agent does not form a difficult-to-remove crust on any contact surface within the device, reducing the difficulty of maintenance and cleaning. During the application of the adhesive coating, it is necessary to ensure that the surfaces of the inner wall of the oil inlet chamber, the outer side wall of oil inlet structure 1, and the inner wall of the oil return chamber are clean and dry. After the coating is applied, appropriate curing treatment is required to ensure the adhesion and stability of the coating. Due to the presence of the coating, cleaning can be performed directly with water without the need for chemical cleaning agents. This not only simplifies the cleaning process and improves cleaning efficiency but also reduces cleaning costs and minimizes the potential environmental pollution caused by chemical cleaning agents.

[0043] Embodiment 2 of this utility model provides a glass fiber production system, including a sizing agent coating device, which is the sizing agent coating device described above. A positioning structure 8 is provided on the side wall of the oil return structure 2 to fix it to the process position of the glass fiber production system. In the glass fiber production system of Embodiment 2, the sizing agent coating device is designed as described above, consisting of an oil inlet structure 1 and an oil return structure 2, with a non-stick coating on its surface. The oil inlet structure 1 and the oil return structure 2 are detachably assembled together via connectors, achieving high efficiency, stability, and environmental friendliness in the coating process. The positioning structure 8 is designed on the side wall of the oil return structure 2. This positioning structure 8 can be a positioning hole, a positioning pin, or a similar fixing component, used to fix it to the process position of the glass fiber production system. The use of the positioning structure 8 ensures the stable position of the coating device on the production line, preventing the device from shifting due to vibration or external force during production, thus affecting the coating effect. The positioning structure 8 is designed with full consideration of its compatibility with the process location in the production system, ensuring that the coating device can be accurately installed in the predetermined position, achieving seamless integration with the production line and improving the consistency and controllability of the production process. The positioning structure 8 also provides the possibility of fine-tuning. By adjusting the tightness of the positioning structure 8 or the fine-tuning device, the position of the coating device can be precisely adjusted to adapt to different glass fiber production needs, ensuring the accuracy and uniformity of the coating.

[0044] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0045] Significantly alleviated skinning problem: Both the oil inlet structure 1 and the oil return structure 2 are coated with a non-stick coating. Whether it is a polymer or ceramic coating, it can effectively reduce the adhesion of the wetting agent to the contact surface, significantly reducing skinning, extending the cleaning cycle, and reducing maintenance costs. Convenient cleaning operation: The detachable design of the cover plate 3 makes the cleaning process more convenient. There is no need to disassemble the entire device; simply remove the cover plate 3 for internal cleaning, greatly improving the efficiency and thoroughness of cleaning while reducing downtime and avoiding production interruptions.

[0046] Environmentally friendly cleaning: The use of a non-stick coating allows for cleaning with only water, avoiding the use of chemical cleaning agents, reducing environmental pollution, and meeting the requirements of modern industrial environmentally friendly production. Improved coating uniformity: The overflow port 7 automatically adjusts the wetting agent level, preventing level fluctuations from affecting coating uniformity and ensuring that each glass fiber receives a consistent coating effect, thus improving product quality. The detachable connection design of the oil inlet structure 1 and the oil return structure 2 simplifies the equipment maintenance process and reduces maintenance costs. Furthermore, the reduction in skinning issues decreases the frequency of cleaning, further lowering production costs.

[0047] Structural Optimization and Increased Production Efficiency: The height difference design between the oil inlet structure 1 and the oil return structure 2, as well as the fluid path connection between the oil inlet tank 11 and the oil return tank 21, optimizes the circulation path of the wetting agent and improves production efficiency. Meanwhile, the connection method between the cover plate 3 and the oil inlet structure 1 ensures good sealing and ease of operation. Safety and Environmental Protection: The adoption of environmentally friendly cleaning methods and the reduction of chemical cleaning agents not only lowers the company's production costs but also reflects the company's emphasis on environmental protection. At the same time, the stability and safety of the equipment are improved, protecting the production environment and the health of employees.

[0048] The production system boasts high integration: the positioning structure 8 ensures the coating device is securely fixed in its process position within the glass fiber production system, reducing the possibility of equipment displacement and enhancing the stability and continuity of the production process. In summary, this utility model's sizing agent coating device not only solves the technical problem of sizing agent skinning but also optimizes the coating process, reduces maintenance costs, and improves production efficiency. Furthermore, it reflects an emphasis on environmental protection and production safety, demonstrating significant technological advancements and economic benefits.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sizing agent coating apparatus for coating glass fibers with a sizing agent, characterized in that, The wetting agent coating device includes: Oil inlet structure (1), the oil inlet structure (1) is used to receive the wetting agent, and the bottom of the oil inlet structure (1) is provided with an oil inlet (5) for installing the oil inlet pipe head (51). Cover plate (3), which is detachably mounted on the oil inlet structure (1) to cover the oil inlet (5) through the cover plate (3); The oil return structure (2) has an oil return chamber inside, and the oil inlet structure (1) has an oil inlet chamber inside. The oil return structure (2) and the oil inlet structure (1) are detachably connected. The bottom of the oil return structure (2) is provided with an oil return port (6). The oil return port (6) and the oil inlet pipe head (51) are connected through a homogenization device. The oil inlet structure (1) and the oil return structure (2) are both coated with a non-stick coating, wherein the non-stick coating is made of a polymer material or a ceramic material.

2. The wetting agent coating apparatus according to claim 1, characterized in that, The oil inlet chamber includes an oil inlet groove (11), the opening of which is located above the oil inlet structure (1). The oil return chamber includes an oil return groove (21), the opening of which is located above the oil return structure (2). The opening of the oil inlet groove (11) is smaller than the opening of the oil return groove (21). At least part of the oil inlet groove (11) is located within the oil return groove (21).

3. The wetting agent coating apparatus according to claim 1, characterized in that, The oil inlet structure (1) is also provided with a plurality of overflow ports (7). Each overflow port extends vertically downward along the top of the side wall of the oil inlet structure (1). The plurality of overflow ports (7) are evenly distributed along the length of the oil inlet structure (1) on the side wall of the oil inlet structure (1). The oil inlet chamber is connected to the return oil chamber through the overflow ports (7).

4. The wetting agent coating apparatus according to claim 1, characterized in that, The cover plate (3) includes a top cover (31) and a side cover (32). The top cover (31) extends along the length direction of the oil inlet structure (1), and the side cover (32) is perpendicular to the top cover (31). The top cover (31) covers the oil inlet (5) and the side cover (32) is connected to the oil inlet structure (1).

5. The wetting agent coating apparatus according to claim 1, characterized in that, The bottom of the oil inlet structure (1) is provided with multiple oil inlets (5), each of the oil inlets (5) is equipped with an oil inlet pipe head (51), the multiple oil inlets (5) are evenly distributed along the length direction of the oil inlet structure (1), and the cover plate (3) is placed on top of the multiple oil inlets (5).

6. The wetting agent coating apparatus according to claim 1, characterized in that, The bottom of the oil inlet structure (1) is provided with a first connector (41), and the bottom of the oil return chamber of the oil return structure (2) is provided with a second connector (42). The first connector (41) and the second connector (42) are correspondingly arranged so that the oil inlet structure (1) and the oil return structure (2) can be detachably connected.

7. The wetting agent coating apparatus according to claim 1, characterized in that, The vertical height of the oil inlet structure (1) is less than the vertical height of the oil return structure (2), and the height of the horizontal plane where the top end face of the oil inlet structure (1) is located is lower than the height of the horizontal plane where the top end face of the oil return structure (2) is located.

8. The wetting agent coating apparatus according to claim 1, characterized in that, The non-stick coating is provided on the inner wall of the oil inlet cavity of the oil inlet structure (1), the outer side wall of the oil inlet structure (1), and the inner wall of the oil return cavity of the oil return structure (2).

9. A glass fiber production system, characterized in that, include: According to any one of claims 1 to 8, the side wall of the oil return structure (2) is provided with a positioning structure (8) to be fixedly connected to the process position of the glass fiber production system through the positioning structure (8).

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