Oil fume collecting device for ultra-high molecular weight polyethylene fiber spinning manifold and spinning equipment

Abstract

The utility model provides an oil fume collecting device for an ultra-high molecular weight polyethylene fiber spinning manifold and spinning equipment, the oil fume collecting device comprises a first cover body assembly and a second cover body assembly, in a first working state, a control valve controls a main channel pipe fitting and a branch channel pipe fitting to be communicated, and in a second working state, a control valve controls a main channel pipe fitting to be communicated; oil fume generated by a spinneret plate of the spinning manifold enters the first cover body and the second cover body through the first air inlet and the second air inlet respectively, and the oil fume is guided out to a target position through the main channel pipe fitting and the branch channel pipe fitting. And in the second working state, the control valve controls the branch channel pipe fitting to be disconnected from the main channel pipe fitting, oil fume generated by a spinneret plate of the spinning manifold enters the first cover body from the first air inlet, and the main channel pipe fitting guides the oil fume to a target position. According to the lampblack collecting device for the ultra-high molecular weight polyethylene fiber spinning manifold, efficient collection can be conducted through the first cover body assembly and the second cover body assembly according to the characteristics of different stages of a production line.

Description

Technical Field

[0001] This application relates to the technical field of ultra-high molecular weight polyethylene fiber spinning equipment, and in particular to an oil fume collection device and spinning equipment for an ultra-high molecular weight polyethylene fiber spinning box. Background Technology

[0002] The production of ultra-high molecular weight polyethylene (UHMWPE) fiber uses polyethylene and mineral oil as raw materials. In the spinning process, high-temperature heating is required, causing the light components of the mineral oil to volatilize. The spinneret in the spinning box generates a large amount of gaseous and liquid fumes during spinning. If these fumes are not collected and treated promptly, they will not only pollute the production environment, affecting workshop air quality and endangering the health of operators, but may also accumulate on equipment surfaces, affecting the normal operation and lifespan of the equipment, and even adversely impacting the quality of the fiber products.

[0003] Currently, traditional fume collection devices have many shortcomings when dealing with fumes generated by ultra-high molecular weight polyethylene (UHMWPE) fiber spinning boxes. For example, their collection efficiency is low, and they cannot completely collect the fumes generated by the spinneret. Therefore, developing a highly efficient fume collection device for UHMWPE fiber spinning boxes is of significant practical importance. Utility Model Content

[0004] This application provides an oil fume collection device and spinning equipment for an ultra-high molecular weight polyethylene fiber spinning box, which can improve the oil fume collection efficiency.

[0005] In a first aspect, embodiments of this application provide an oil fume collection device for an ultra-high molecular weight polyethylene fiber spinning box, comprising: a first hood assembly, including a first hood and a main channel pipe, the first hood including a first air inlet and a sealing element surrounding the first air inlet, the first hood forming a sealed structure with the spinneret of the spinning box through the sealing element, the first hood communicating with the main channel pipe on the side opposite to the first air inlet; and a second hood assembly, connected in parallel with the first hood assembly, the second hood assembly including a second hood and a branch channel pipe, the second hood including a second air inlet, the second hood communicating with the branch channel pipe on the side opposite to the second air inlet, the branch channel pipe being provided with a control valve. It can control the connection and disconnection of branch channel pipes and main channel pipes; the first hood and the second hood are arranged side by side along a first direction, which intersects with the direction from the spinning box to the first hood; wherein, in the first working state, the control valve controls the main channel pipe and the branch channel pipe to be connected, and the oil fumes generated by the spinneret of the spinning box enter the first hood and the second hood respectively through the first air inlet and the second air inlet, and the main channel pipe and the branch channel pipes exhaust the oil fumes to the target position; in the second working state, the control valve controls the branch channel pipe to be disconnected from the main channel pipe, and the oil fumes generated by the spinneret of the spinning box enter the first hood through the first air inlet, and the main channel pipe exhausts the oil fumes to the target position.

[0006] According to an embodiment of the first aspect of this application, the main channel pipe fitting includes a main channel vent, through which some oil fumes enter the main channel pipe fitting. A first guide plate connected to its inner wall is provided inside the first hood. The projection of the main channel vent from the spinning box towards the first hood falls into the first guide plate, and the first guide plate can guide the oil fumes dripping from the main channel pipe fitting to the inner wall of the first hood. The branch channel pipe fitting includes a branch channel vent, through which some oil fumes enter the branch channel pipe fitting. A second guide plate connected to its inner wall is provided inside the second hood. The projection of the branch channel vent from the spinning box towards the first hood falls into the second guide plate, and the second guide plate can guide the oil fumes dripping from the branch channel pipe fitting to the inner wall of the second hood.

[0007] According to an embodiment of the first aspect of this application, the extending direction of the first guide plate has a first preset angle with the plane where the first air inlet is located, and the value of the first preset angle is 45 degrees. o ~70 o ;

[0008] The extension direction of the second guide plate has a second preset angle with the plane where the second air intake is located, and the value of the second preset angle is 45 degrees. o ~70 o .

[0009] According to an embodiment of the first aspect of this application, a first guide groove is provided on the inner wall of the first cover, and the first guide groove is arranged in a spiral manner along the inner wall of the first cover; a second guide groove is provided on the inner wall of the second cover, and the second guide groove is arranged in a spiral manner along the inner wall of the second cover; the first cover and the second cover have a connecting part, and the connecting part is provided with an oil receiving groove, which is connected to the first guide groove and the second guide groove respectively.

[0010] According to an embodiment of the first aspect of this application, the first guide channel has a first preset slope, the value of which is 3% to 8%; the second guide channel has a second preset slope, the value of which is 3% to 8%; the slope direction of the first guide channel and the second guide channel is towards the oil receiving channel.

[0011] According to an embodiment of the first aspect of this application, the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box further includes an oil fume collection and conveying pipeline, which is connected to an oil receiving tank to receive the oil fumes collected in the oil receiving tank.

[0012] According to an embodiment of the first aspect of this application, the cross-sectional area of ​​the second air inlet is smaller than the cross-sectional area of ​​the first air inlet.

[0013] According to an embodiment of the first aspect of this application, the thickness of the first cover and / or the second cover is 2-3 mm, and the first cover and / or the second cover are provided with reinforcing ribs.

[0014] Secondly, this application provides an ultra-high molecular weight polyethylene fiber spinning device, including a spinning box and the aforementioned oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box, wherein a first cover and the spinning box form a sealed structure.

[0015] According to an embodiment of the second aspect of this application, a bottom suction hood is also provided on the side of the spinning box that is away from the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box.

[0016] The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box provided in this application embodiment has the following characteristics: in the first working state, the two covers work together, which greatly improves the collection efficiency of oil fumes escaping from a large space; in the second working state, the first cover assembly achieves collection by virtue of its good airtightness. The first cover assembly and the second cover assembly can be used to collect oil fumes efficiently according to the characteristics of different stages of the production line. Attached Figure Description

[0017] The features, advantages, and technical effects of exemplary embodiments of the present application will now be described with reference to the accompanying drawings. In the drawings, the same parts are referred to by the same reference numerals. The drawings are not drawn to scale.

[0018] Figure 1A cross-sectional structural schematic diagram of an oil fume collection device for an ultra-high molecular weight polyethylene fiber spinning box provided in an embodiment of this application;

[0019] Figure 2 A top view schematic diagram of an oil fume collection device for an ultra-high molecular weight polyethylene fiber spinning box provided in an embodiment of this application;

[0020] Figure 3 A cross-sectional structural schematic diagram of an ultra-high molecular weight polyethylene fiber spinning device provided in an embodiment of this application;

[0021] Figure 4 This is another cross-sectional view of the ultra-high molecular weight polyethylene fiber spinning equipment provided in the embodiments of this application;

[0022] Figure 5 Another cross-sectional view of the ultra-high molecular weight polyethylene fiber spinning equipment provided in the embodiments of this application;

[0023] Figure 6 This is another cross-sectional view of the ultra-high molecular weight polyethylene fiber spinning equipment provided in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. First enclosure assembly; 110. First enclosure; 111. First air inlet; 112. First air guide plate; 113. First air guide channel; 120. Main channel pipe fitting; 121. Main air outlet.

[0026] 200. Second shroud assembly; 210. Second shroud; 211. Second air inlet; 212. Second air guide plate; 213. Second air guide groove; 220. Branch channel fitting; 221. Control valve; 222. Branch air outlet;

[0027] 300. Oil receiving tank; 301. E-liquid collection and conveying pipeline;

[0028] 400. Spinning box; 401. Spinneret; 402. Operating chamber;

[0029] 500. Bottom suction hood; 600. Spinning water tank;

[0030] X, the first direction. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0032] Furthermore, for the sake of understanding and ease of description, the dimensions and thicknesses of each configuration shown in the figures are arbitrarily illustrated, but the concept of this application is not limited thereto. In the figures, the thicknesses of layers, films, panels, and regions, etc., are enlarged for clarity. In the figures, the thicknesses of some layers and regions are enlarged for better understanding and ease of description.

[0033] Furthermore, unless explicitly stated otherwise, the word "including" will be understood to include the stated components but not exclude any other components.

[0034] Traditional collection methods typically use fume hoods to collect fumes with large air volumes. However, large-volume collection of fumes results in low concentrations, leading to higher operating costs for back-end treatment facilities. Excessive intake of fresh air can cause dilution issues, and the volatilized mineral oil cannot be effectively recovered, which is detrimental to environmental protection.

[0035] In view of the above problems, this application provides an oil fume collection device and spinning equipment for an ultra-high molecular weight polyethylene fiber spinning box, which can improve the oil fume collection efficiency.

[0036] Please refer to the following: Figures 1 to 4This application provides an oil fume collection device for a spinning box of ultra-high molecular weight polyethylene fiber, comprising: a first hood assembly 100, including a first hood 110 and a main channel pipe 120, the first hood 110 including a first air inlet 111 and a sealing member surrounding the first air inlet 111, the first hood 110 forming a sealed structure with the spinneret 401 of the spinning box 400 through the sealing member, the first hood 110 communicating with the main channel pipe 120 on the side opposite to the first air inlet 111; and a second hood assembly 200 connected in parallel with the first hood assembly 100, the second hood assembly 200 including a second hood 210 and a branch channel pipe 220, the second hood 210 including a second air inlet 211, the second hood 210 communicating with the branch channel pipe 220 on the side opposite to the second air inlet 211, the branch channel pipe 220 being provided with a control valve 221, the control valve 221 being capable of controlling... The control valve 221 controls the connection and disconnection of the branch channel pipe fitting 220 and the main channel pipe fitting 120; the first cover 110 and the second cover 210 are arranged side by side along the first direction X, which intersects the direction from the spinning box 400 to the first cover 110; wherein, in the first working state, the control valve 221 controls the connection between the main channel pipe fitting 120 and the branch channel pipe fitting 220, and the oil fumes generated by the spinneret 401 of the spinning box 400 are respectively introduced through the first air inlet 111 and the second air inlet 120. The second air inlet 211 enters the first hood 110 and the second hood 210. The main channel pipe 120 and the branch channel pipe 220 exhaust the fumes to the target position. In the second working state, the control valve 221 controls the branch channel pipe 220 to disconnect from the main channel pipe 120. The fumes generated by the spinneret 401 of the spinning box 400 enter the first hood 110 through the first air inlet 111. The main channel pipe 120 exhausts the fumes to the target position.

[0037] For example, in this embodiment of the application, the first direction X is the horizontal direction.

[0038] In this embodiment, the first hood assembly 100 includes a first hood 110 and a main channel pipe 120. The first hood 110 includes a first air inlet 111 formed by the first hood 110 and a sealing member surrounding the first air inlet 111. The first air inlet 111 faces the spinneret 401 of the spinning box 400 to collect oil fumes. The sealing member is attached to the spinneret 401 of the spinning box 400. The first hood 110 forms a sealed structure with the spinneret 401 of the spinning box 400 through the sealing member to ensure that oil fumes do not leak. The first hood 110 communicates with the main channel pipe 120 on the side opposite to the first air inlet 111 so that the oil fumes collected by the first hood 110 can be discharged through the main channel pipe 120.

[0039] In this embodiment, the second cover assembly 200 is connected in parallel with the first cover assembly 100. The second cover assembly 200 includes a second cover 210 and a branch channel pipe 220. The second cover 210 includes a second air inlet 211 formed by the second cover 210. The second cover 210 communicates with the branch channel pipe 220 on the side opposite to the second air inlet 211. The branch channel pipe 220 is provided with a control valve 221, which can control the connection and disconnection between the branch channel pipe 220 and the main channel pipe 120.

[0040] The first cover 110 and the second cover 210 are arranged side by side along the first direction X, which intersects with the direction from the spinning box 400 to the first cover 110. This allows for the collection of oil fumes generated at different locations, thereby improving collection efficiency.

[0041] In the first operating state, control valve 221 connects the main channel pipe 120 and the branch channel pipe 220. The fumes generated by the spinneret 401 of the spinning box 400 enter the first hood 110 and the second hood 210 through the first air inlet 111 and the second air inlet 211, respectively. The main channel pipe 120 and the branch channel pipe 220 then guide the fumes to the target location, such as in a fume purification device. In the second operating state, control valve 221 disconnects the branch channel pipe 220 from the main channel pipe 120. The fumes generated by the spinneret 401 of the spinning box 400 enter the first hood 110 only through the first air inlet 111, and the main channel pipe 120 guides the fumes to the target location. This switchable operating state allows for flexible adjustment of the fume collection method according to the actual needs of the spinning process.

[0042] The switchable first and second working states can adapt to different spinning process stages. For example, in the early stage of spinning or under certain specific process conditions, the amount of oil fume generated is small, so the second working state can be used, and the oil fume can be collected only by the first hood 110; while in the stage where the amount of oil fume generated is large, the first working state can be used to collect the oil fume simultaneously using both hoods, thus meeting the needs of different working conditions.

[0043] For example, please refer to Figure 3 During the production line start-up phase, before the spinning water tank 600 is raised, one side of the spinneret 401 is an open area, resulting in a large amount of oily fumes escaping. At this stage, the control device can open the control valve 221, connecting the branch channel pipe 220 with the main channel pipe 120. The oily fume collection device for the ultra-high molecular weight polyethylene fiber spinning box is in its first working state. At this time, the oily fumes generated by the spinneret 401 enter the first hood 110 not only through the first air inlet 111 but also through the second air inlet 211 into the second hood 210. Figure 3The direction of the middle arrow indicates the direction of the oil fume flow. The oil fumes collected by the first hood 110 and the second hood 210 are respectively discharged to the target location for treatment through the main channel pipe fitting 120 and the branch channel pipe fitting 220.

[0044] The side-by-side arrangement of the first hood 110 and the second hood 210, along with the design of dual air inlets, enables more comprehensive collection of the oil fumes generated by the spinneret 401, greatly improving collection efficiency compared to traditional single-hood collection devices.

[0045] For example, please refer to Figure 4 During normal operation of the production line, the spinning water tank is 600 liters high. The open space between the water tank and the housing is small, reducing the open space for oil fume escape and decreasing the intake of fresh air. At this time, a smaller airflow can be used to collect the oil fumes. The oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning housing can switch to a second working state. The control valve 221 of the second hood assembly 200 is closed, and the branch channel pipe 220 is disconnected from the main channel pipe 120. The second hood 210 does not participate in oil fume collection, and the first hood assembly 100 plays a major role. Due to the sealed structure formed by the first hood 110 and the spinneret 401, the oil fumes generated by the spinneret 401 enter the first hood 110 through the first air inlet 111, and are then discharged to the target location, such as an oil fume purification device, through the main channel pipe 120. Figure 4 The direction of the middle arrow indicates the direction of the oil fume flow.

[0046] The first cover 110 forms a sealed structure with the spinneret 401 of the spinning box 400 through the sealing element, which effectively prevents oil fume leakage, ensures the cleanliness of the workshop environment, and also reduces the adverse effects of oil fume on equipment and products.

[0047] The main channel pipe fitting 120 can be flexibly connected to different fume treatment equipment, such as fume purifiers or oil storage containers. Fume purifiers can purify fumes to meet emission standards, while oil storage containers can collect and store fumes for later recycling. This flexibility allows the fume collection device in this embodiment to adapt to the diverse fume treatment needs of different enterprises, improving the device's versatility and practicality.

[0048] It is understood that the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box in this application embodiment may also include an air extraction device. The main channel pipe 120 is connected to the air extraction device. The air extraction device is a power source that provides suction force for the conveying of oil fumes. For example, the air extraction device may be a variable frequency vacuum pump or a fan.

[0049] This application does not limit the material of the first cover 110; it can be made of metal. For example, the material selected is stainless steel, which is resistant to high temperature and corrosion and has a certain mechanical strength, such as 304 stainless steel, which can withstand the high temperature environment and the corrosion of oil fumes during the spinning process.

[0050] This application does not limit the specific shape of the first cover 110. The shape can be designed as a semi-enclosed structure customized according to the contour of the spinneret 401 of the spinning box 400, which fits the shape of the spinneret 401 and can collect oil fumes more efficiently. The first cover 110 is provided with a first air inlet 111. For example, the cross-sectional shape of the first air inlet 111 is square.

[0051] The length and width of the first cover 110 only need to cover the length and width of the spinneret 401. The height of the first cover 110 can be determined according to the spatial layout of the spinneret 401 and the surrounding equipment. For example, the height of the first cover 110 is 30~50 cm to ensure good collection effect and not affect the operation of the surrounding equipment.

[0052] For example, the seal can be a high-temperature resistant and oil-resistant silicone rubber seal. Silicone rubber seals can maintain good elasticity and sealing performance in high-temperature environments, effectively preventing oil fume leakage. The shape of the seal is designed according to the contact area between the first cover 110 and the spinneret 401. The seal can be annular or rectangular, with a width between 5 and 10 mm to ensure sufficient sealing contact area.

[0053] This application does not limit the material of the main road channel fitting 120, and the main road channel fitting 120 can also be made of metal. For example, the main road channel fitting 120 is also made of 304 stainless steel to ensure compatibility with the material of the first hood 110 and corrosion resistance to oil fumes.

[0054] This application does not limit the specific shape of the main channel pipe 120; it can be a square pipe or a circular pipe, preferably a circular pipe. A circular pipe reduces airflow resistance for the same cross-sectional area, which is more conducive to the transmission of oil fumes. The size of the main channel pipe 120 is determined according to the expected amount of oil fumes to be collected and the flow rate. For example, the diameter of the main channel pipe 120 is between 15 and 25 cm to ensure sufficient ventilation. The side of the first hood 110 opposite to the first air inlet 111 is connected to the main channel pipe 120 to ensure that the collected oil fumes can be discharged through the main channel pipe 120.

[0055] This application does not limit the material of the second cover 210, and it can be made of metal. The material of the second cover 210 can be the same as or different from that of the first cover 110. Preferably, the material of the second cover 210 is the same as that of the first cover 110, for example, 304 stainless steel.

[0056] This application does not limit the specific shape of the second cover 210. The shape of the second cover 210 can be designed as a semi-enclosed structure similar to the first cover 110. The second cover 210 is provided with a second air inlet 211. For example, the cross-sectional shape of the second air inlet 211 is square.

[0057] The length and width of the second cover 210 can be set as needed, and its height can be similar to that of the first cover 110 to better handle the oil fumes escaping from the large space during driving. The second cover 210 is provided with a second air inlet 211, and is connected to the branch channel pipe 220 on the side opposite to the second air inlet 211.

[0058] This application does not limit the material of the branch channel fitting 220, and the branch channel fitting 220 may also be made of metal. The material of the branch channel fitting 220 may be the same as or different from that of the main channel fitting 120. For example, the material of the branch channel fitting 220 is 304 stainless steel.

[0059] This application does not limit the specific shape of the branch channel pipe fitting 220; it can be a square pipe or a circular pipe. For example, the branch channel pipe fitting 220 is also a circular pipe. The diameter of the branch channel pipe fitting 220 can be the same as or different from that of the main channel pipe fitting 120. For example, the diameter of the branch channel pipe fitting 220 is between 10 and 15 centimeters to accommodate the amount of oil fume collected by the second hood 210.

[0060] A control valve 221 is installed on the branch channel fitting 220. The control valve 221 is used to control the on / off connection between the branch channel fitting 220 and the main channel fitting 120. This application embodiment does not limit the specific type of control valve 221. For example, the control valve 221 can be an electric ball valve. Electric ball valves have the characteristics of fast switching speed, good sealing performance, and high control accuracy, and can quickly respond to the control requirements of the branch channel fitting 220 under different working conditions. Its nominal diameter is determined according to the pipe diameter of the branch channel fitting 220 to ensure good compatibility.

[0061] The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box in this embodiment of the application utilizes a first hood assembly 100 and a second hood assembly 200 for efficient collection, tailored to the characteristics of different stages of the production line. During normal operation, the first hood assembly 100 achieves collection due to its excellent airtightness; during the start-up phase, the two hoods work together, greatly improving the collection efficiency of oil fumes escaping from large spaces.

[0062] By switching between different enclosure components through control valve 221, it can flexibly adapt to the two significantly different working conditions of normal production line operation and start-up. Compared with traditional single-mode collection devices, it greatly improves the adaptability to the production process.

[0063] Regardless of the operating conditions, the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box in this application embodiment can effectively collect oil fumes, avoid pollution of the workshop environment by oil fumes, reduce the adhesion and accumulation of oil fumes on the equipment surface, thereby ensuring the normal operation and service life of the equipment, and also helping to improve the quality of fiber products.

[0064] Please see Figure 1 and Figure 2 In some embodiments, the main channel pipe 120 includes a main channel vent 121, through which some oil fumes enter the main channel pipe 120. A first guide plate 112 connected to its inner wall is provided inside the first cover 110. The projection of the main channel vent 121 from the spinning box 400 to the first cover 110 falls into the first guide plate 112. The first guide plate 112 can guide the oil fumes dripping from the main channel pipe 120 to the inner wall of the first cover 110. The branch channel pipe fitting 220 includes a branch vent 222. Some of the oil fumes enter the branch channel pipe fitting 220 through the branch vent 222. The second cover 210 is provided with a second guide plate 212 connected to its inner wall. The branch vent 222 falls into the second guide plate 212 along the projection from the spinning box 400 to the first cover 110. The second guide plate 212 can guide the oil fumes dripping from the branch channel pipe fitting 220 to the inner wall of the second cover 210.

[0065] Oil mist particles collide and coalesce within the main road channel fitting 120 or the branch road channel fitting 220, and are easily dripped off under centrifugal force at bends and turns, resulting in a large amount of oil remaining in the pipeline. This oil may drip onto the high-temperature spinneret 401 surface at the gas collection hood, posing a significant fire hazard.

[0066] In this embodiment of the application, a first guide plate 112 connected to its inner wall is provided inside the first cover 110 to guide the oil fumes dripping from the main channel pipe 120. A second guide plate 212 connected to its inner wall is provided inside the second cover 210 to guide the oil fumes dripping from the branch channel pipe 220, thereby preventing the oil fumes from falling onto the surface of the spinneret 401.

[0067] Specifically, during normal operation of the production line, a portion of the oil fumes generated by the spinneret 401 directly enters the first hood 110 through the first air inlet 111, and then enters the main channel pipe fitting 120 through the main air outlet 121. If the oil fumes entering the main channel pipe fitting 120 condense and drip down upon cooling within the channel, the dripping oil fumes will be guided by the first guide plate 112 to the inner wall of the first hood 110, and then flow down along the inner wall of the first hood 110. This prevents the oil fumes from accumulating in the main channel pipe fitting 120 and affecting the smooth flow of the channel. Ultimately, all the oil fumes entering the first hood 110 are discharged to the target location through the main channel pipe fitting 120.

[0068] Specifically, during the production line start-up phase, before the spinning water tank 600 is raised, some of the oil fumes generated by the spinneret 401 enter the first hood 110 through the first air inlet 111, and then enter the main channel pipe 120 through the main air outlet 121. This process is similar to the normal operation phase. If the oil fumes entering the main channel pipe 120 condense and drip down upon cooling within the channel, the dripping oil fumes will be guided by the first guide plate 112 to the inner wall of the first hood 110, and then flow down along the inner wall of the first hood 110. Simultaneously, after the control valve 221 is opened, some of the oil fumes will also enter the second hood 210 through the second air inlet 211, and then enter the branch channel pipe 220 through the branch air outlet 222. If the fumes entering the branch channel pipe fitting 220 condense and drip down, they will be guided by the second guide plate 212 to the inner wall of the second hood 210 because the projection of the branch vent 222 falls into it. The fumes collected by the first hood 110 and the second hood 210 are then discharged to the target location for treatment via the main channel pipe fitting 120 and the branch channel pipe fitting 220, respectively.

[0069] By setting up the first guide plate 112 and the second guide plate 212, the oil fumes dripping from the main channel pipe fitting 120 and the branch channel pipe fitting 220 are diverted to the inner wall of the hood, effectively preventing oil fumes from accumulating and causing blockages in the channels, ensuring the long-term stable ventilation performance of the channels, and thus ensuring the efficient operation of the oil fume collection device. The first guide plate 112 and the second guide plate 212 ensure that even if oil fumes entering the channel from the air vents condense and drip, they can still be effectively collected, preventing oil fume leakage, further improving the integrity of oil fume collection and reducing the risk of oil fume pollution to the workshop environment. In addition, it also reduces the risk of corrosion and blockage of the inner wall of the channels due to oil fume accumulation, helping to extend the service life of the main channel pipe fitting 120 and the branch channel pipe fitting 220, reducing the maintenance cost of the device, and improving the reliability of the entire oil fume collection device.

[0070] Please see Figure 1 and Figure 2In some embodiments, the extending direction of the first guide plate 112 has a first preset angle with the plane where the first air inlet 111 is located, and the value of the first preset angle is 45 degrees. o ~70 o ;

[0071] The extension direction of the second guide plate 212 has a second preset angle with the plane where the second air inlet 211 is located, and the value of the second preset angle is 45 degrees. o ~70 o .

[0072] The first guide plate 112 extends at a preset angle of 45° to 70° to the plane of the first air inlet 111. Within this angle range, it guides the oil fumes dripping from the main air inlet 121 into the main channel pipe 120, allowing them to flow more smoothly to the inner wall of the first hood 110. When the oil fumes drip, the aforementioned angle utilizes the combined effects of gravity and airflow to prevent the oil fumes from accumulating or flowing back on the guide plate, ensuring that the oil fumes are quickly and stably guided along the designed path. Similarly, the second guide plate 212, at a preset angle of 45° to 70° to the plane of the second air inlet 211, also effectively guides the oil fumes dripping from the branch channel pipe 220, making the collection of oil fumes entering the second hood 210 more efficient.

[0073] The aforementioned appropriate angle setting allows the guide plate to better align with the airflow direction within the hood and channel. During normal operation and start-up of the production line, fumes entering from different directions can be guided by the guide plate, reducing the disorderly flow of fumes inside the device and allowing more fumes to quickly converge on the inner wall of the hood and be discharged, thereby significantly improving the collection efficiency of the entire fume collection device under different operating conditions.

[0074] Because the angle of the guide plate is optimized, the oil fumes can be more effectively guided to the inner wall of the hood, reducing the adhesion and accumulation of oil fumes on the channel and guide plate. This reduces the risk of component blockage and corrosion caused by oil accumulation. As a result, the frequency of cleaning the main channel pipe fitting 120, branch channel pipe fitting 220, first guide plate 112 and second guide plate 212 during device maintenance can be reduced, the maintenance workload is reduced, and the maintenance cost is reduced accordingly. At the same time, the operational stability and reliability of the device are improved, and the downtime caused by maintenance is reduced.

[0075] Please see Figure 1 and Figure 2In some embodiments, the inner wall of the first cover 110 is provided with a first guide groove 113, which is arranged in a spiral manner along the inner wall of the first cover 110; the inner wall of the second cover 210 is provided with a second guide groove 213, which is arranged in a spiral manner along the inner wall of the second cover 210; the first cover 110 and the second cover 210 have a connecting part, and the connecting part is provided with an oil receiving groove 300, which is connected to the first guide groove 113 and the second guide groove 213 respectively.

[0076] The first guide channel 113 is attached to the inner wall of the first cover 110. For example, the first guide channel 113 can be formed by folding the inner edge of the first cover 110, or by fixing it to the inner wall of the first cover 110 by welding, riveting, or using external components such as high-strength adhesive, to ensure a firm and good seal and prevent oil fume leakage. The first guide channel 113 is arranged in a spiral shape along the inner wall of the first cover 110, starting from a position away from the first air inlet 111 and extending in a spiral shape towards the first air inlet 111 until it communicates with the oil receiving groove 300 at the connection part.

[0077] The second guide channel 213 is also disposed on the inner wall of the second cover 210. For example, the second guide channel 213 can be formed by folding the inner edge of the second cover 210, or it can be formed by fixing the inner wall of the second cover 210 with external components such as welding, riveting, or using high-strength adhesives, to ensure a firm and good seal and prevent oil fume leakage. The second guide channel 213 is arranged in a spiral shape along the inner wall of the second cover 210, starting from a position away from the second air inlet 211 and extending in a spiral shape towards the second air inlet 211 until it communicates with the oil receiving groove 300 at the connection part.

[0078] The connection between the first cover 110 and the second cover 210 is the area where they are close together. An oil collecting trough 300 is installed at the connection and is respectively connected to the first guide channel 113 and the second guide channel 213 to ensure that oil fumes can flow smoothly into the oil collecting trough 300. For example, the oil collecting trough 300 is typically made of the same stainless steel as the cover and is fixed to the connection by welding or other methods to ensure a stable and sealed structure.

[0079] During normal operation of the production line, the first hood assembly 100 operates. The fumes generated by the spinneret 401 enter the first hood 110 through the first air inlet 111 and are directly collected and discharged by the main channel pipe fitting 120. The fumes adhering to the inner wall of the first hood 110 flow along the spiraling first guide channel 113 under gravity. Due to the spiraling design of the first guide channel 113, the fumes can converge over a longer path, enhancing the collection effect. Finally, these fumes flow along the first guide channel 113 into the oil receiving trough 300 of the connecting part.

[0080] During the production line start-up phase, before the spinning water tank 600 is raised, both the first hood assembly 100 and the second hood assembly 200 are operational. The oil fume collection process within the first hood 110 is similar to the normal operation phase, with the oil fume flowing into the oil collection tank 300 through the first guide channel 113. Simultaneously, the oil fume collected by the second hood 210 enters through the second air inlet 211, and the oil fume adhering to the inner wall of the second hood 210 swirls and flows along the second guide channel 213, eventually also flowing into the oil collection tank 300. The oil collection tank 300 centrally collects the oil fume from both hoods, and the collected oil fume can be uniformly processed by a subsequent oil drainage device. For example, the oil collection tank is connected to an oil storage container via a pipe.

[0081] The spiral arrangement of the first guide channel 113 and the second guide channel 213 increases the flow path of oil fumes on the inner wall of the hood, allowing more oil fumes adhering to the inner wall of the hood to be collected. Compared with ordinary straight guide structures, the spiral guide channels can guide oil fumes more comprehensively, greatly improving the efficiency and integrity of oil fume collection and reducing oil fume residue inside the hood.

[0082] Furthermore, by connecting the first guide channel 113 and the second guide channel 213 through the oil receiving tank 300, centralized processing of the oil fumes collected by the two hoods is achieved. This not only facilitates the subsequent unified cleaning and recycling of oil fumes, but also effectively avoids the inconvenience and increased costs caused by decentralized oil fume processing, thereby improving the overall working efficiency of the oil fume collection device.

[0083] Please see Figure 1 and Figure 2 In some embodiments, the first guide channel 113 has a first preset slope, the value of which is 3% to 8%; the second guide channel 213 has a second preset slope, the value of which is 3% to 8%; the slope direction of the first guide channel 113 and the second guide channel 213 is towards the oil receiving channel 300.

[0084] In this embodiment, when the first guide channel 113 is installed in a spiral shape and adheres to the inner wall of the first cover 110, its overall structure is laid according to a first preset slope, which is between 3% and 8%, and the slope direction is towards the oil receiving groove 300 of the connecting part. When the second guide channel 213 is installed in a spiral shape and adheres to the inner wall of the second cover 210, its overall structure is laid according to a second preset slope, which is between 3% and 8%, and the slope direction is towards the oil receiving groove 300 of the connecting part.

[0085] During normal operation of the production line, when the first hood 110 collects oil fumes, the oil fumes adhering to the inner wall of the first hood 110 flow towards the oil receiving tank 300 under the combined action of gravity and the slope of the first guide channel 113. The slope gives the oil fumes, which originally flowed slowly by gravity, additional momentum, allowing them to spiral down the first guide channel 113 more quickly, shortening the residence time of the oil fumes in the first guide channel 113 and improving collection efficiency.

[0086] During the production line start-up phase, before the spinning water tank 600 is raised, and while both hoods are operating simultaneously, the slopes of the first guide channel 113 and the second guide channel 213 work together. Oil fumes from the inner wall of the first hood 110 flow rapidly to the oil receiving tank 300 under the guidance of the slope of the first guide channel 113, and oil fumes from the inner wall of the second hood 210 also quickly converge into the oil receiving tank 300 under the guidance of the slope of the second guide channel 213. The slope settings of the two guide channels allow the oil fumes to be efficiently concentrated in the oil receiving tank 300, facilitating subsequent unified treatment by the oil discharge device, further improving the efficiency of oil fume collection and treatment.

[0087] Please see Figure 1 In some embodiments, the system also includes an oil collection and delivery pipeline 301, which is connected to an oil receiving tank 300 to receive the oil fumes collected in the oil receiving tank 300.

[0088] For example, the fume collection and conveying pipeline 301 is made of corrosion-resistant pipe material, such as stainless steel pipe or oil-resistant rubber pipe, and one end of it is tightly connected to the oil receiving tank 300 by means of welding, flange connection or threaded connection. The connection part can be sealed with sealant or gasket to ensure that no leakage occurs during the collection and conveying of fumes. For example, the connection position is selected at the bottom or lower side of the oil receiving tank 300 so that the fumes collected in the oil receiving tank 300 can flow smoothly into the fume collection and conveying pipeline 301 by gravity.

[0089] The oil fumes collected by the first hood 110 flow into the oil receiving tank 300 via the first guide channel 113, and the oil fumes collected by the second hood 210 also flow into the oil receiving tank 300 via the second guide channel 213. The oil fumes accumulated in the oil receiving tank 300 flow downwards under the action of gravity through the fume collection and conveying pipeline 301 connected to the oil receiving tank 300. If the conveying pipeline is long or has a certain height difference, an appropriate pump can be installed on the pipeline to provide power for the oil fume conveying, ensuring that the oil fumes can be stably conveyed to subsequent treatment equipment, such as an oil fume purification device or an oil storage container. For example, the pump is a peristaltic pump or a small centrifugal pump.

[0090] The connection between the fume collection and conveying pipeline 301 and the oil receiving tank 300 enables automated and continuous fume collection, eliminating the need for frequent manual cleaning of the oil receiving tank 300 and reducing labor costs and operational risks. The fume within the oil receiving tank 300 can be continuously and stably conveyed to the designated location, improving the overall efficiency of the fume collection system and ensuring that the spinning production process is not disturbed by fume collection and treatment, allowing for continuous and stable operation.

[0091] The fume collection and conveying pipeline 301 can be flexibly connected to different fume treatment equipment, such as fume purifiers or oil storage containers. Fume purifiers can purify the fumes to meet emission standards, while oil storage containers can collect and store the fumes for later recycling. This flexibility allows the fume collection device to adapt to the diverse fume treatment needs of different enterprises, improving the device's versatility and practicality.

[0092] Please see Figure 1 and Figure 2 In some embodiments, the cross-sectional area of ​​the second air inlet 211 is smaller than that of the first air inlet 111.

[0093] During normal operation of the production line, the first hood assembly 100 is in operation. The first air inlet 111 has a large cross-sectional area, which can efficiently collect a large amount of oil fumes generated by the spinneret 401 during normal operation. The smaller second air inlet 211 is designed with a certain amount of air intake space to deal with a small amount of abnormal oil fumes that may occur, thus preparing for its use.

[0094] During the production line start-up phase, before the spinning tank 600 is raised, the oil fume generation is quite complex. The space around the spinneret 401 is large, and the oil fume diffuses. The first air inlet 111, with its large cross-sectional area, continuously collects a large amount of oil fume. Because the oil fume diffuses widely but its concentration is relatively low, the smaller second air inlet 211 can specifically collect the diffused oil fume from the surrounding area. By controlling the air intake, it avoids affecting the efficiency of subsequent oil fume treatment due to excessive air intake.

[0095] For example, the second air inlet 211 is positioned toward the operating cavity 402 of the spinning box 400, which can be used to collect the oil fumes that are diffused in the surrounding area.

[0096] In this embodiment, the operating cavity 402 refers to a specific space area on the spinning box 400, which can be used for the installation, maintenance and repair of the above-mentioned components. It facilitates the installation, disassembly, cleaning and replacement of melt distribution pipes, metering pumps, spinneret assemblies and other components by operators, and also provides operating space for the debugging and troubleshooting of related equipment.

[0097] The cross-sectional area of ​​the second air inlet 211 is smaller than that of the first air inlet 111, enabling the device to better adapt to the characteristics of oil fume generation at different stages of the production line. During normal operation, the larger first air inlet 111 meets the need for efficient collection of large amounts of oil fume; during start-up, the smaller second air inlet 211 can accurately collect diffused oil fume, avoiding difficulties in subsequent processing due to excessive air intake caused by an overly large air inlet, thus greatly improving the device's performance under different operating conditions.

[0098] To address the characteristic of low-concentration, diffused fumes during startup, the smaller second air inlet 211 can more effectively collect fumes, reducing the intake of ineffective air. Compared to a design with two air inlets of equal area, this differentiated area setting improves the accuracy of fume collection under specific operating conditions, ensuring efficient fume collection at different production stages and enhancing overall collection effectiveness.

[0099] By rationally controlling the cross-sectional area of ​​the second air inlet 211, the amount of air drawn in during the start-up phase is reduced, thus lowering the load on subsequent fume treatment equipment. For example, in fume purification equipment, a smaller air intake means a smaller amount of mixed gas to be treated, thereby reducing energy consumption and equipment wear, saving fume treatment costs, and improving the overall operating economy of the device.

[0100] In some embodiments, the thickness of the first cover 110 and / or the second cover 210 is 2-3 mm, and the first cover 110 and / or the second cover 210 are provided with reinforcing ribs.

[0101] The hood thickness is 2-3mm, ensuring hood performance while avoiding material waste and increased costs associated with using excessively thick plates. The reinforcing ribs, with minimal material input, significantly improve the hood's strength and stability. This design optimizes cost-effectiveness while meeting the device's functional requirements, enhancing the overall cost-effectiveness of the fume collection system.

[0102] During manufacturing, the first cover 110 is 2-3mm thick. This ensures that the cover has sufficient strength to withstand the internal oil fume pressure and possible minor external impacts, while avoiding material waste and a significant increase in device weight due to excessive thickness. For example, the first cover 110 can be manufactured using stainless steel plates with a thickness of 2-3mm. During the cover forming process, the stainless steel plate is bent, welded, and processed according to the design shape to form a semi-enclosed cover structure.

[0103] For example, the reinforcing ribs of the first cover 110 are also made of stainless steel and are firmly connected to the inner wall of the first cover 110 by welding. The layout of the reinforcing ribs is designed according to the shape of the cover and the stress conditions, for example, in a crisscross pattern. The welding points between the reinforcing ribs and the cover can be evenly distributed to ensure a firm connection and avoid stress concentration points. The embodiments of this application do not limit the number of reinforcing ribs and can be set as needed.

[0104] Similarly, the second cover 210 is manufactured with a thickness of 2-3 mm. This ensures that the cover has sufficient strength to withstand the internal oil fume pressure and possible minor external impacts, while avoiding material waste and a significant increase in device weight due to excessive thickness. For example, the second cover 210 can be manufactured using stainless steel plates with a thickness of 2-3 mm. During the cover forming process, the stainless steel plate is bent and welded according to the design shape to form a semi-enclosed cover structure.

[0105] For example, the reinforcing ribs of the second cover 210 are also made of stainless steel and are firmly connected to the inner wall of the first cover 110 by welding. The layout of the reinforcing ribs is designed according to the shape of the cover and the stress conditions, for example, in a crisscross pattern. The welding points between the reinforcing ribs and the cover can be evenly distributed to ensure a firm connection and avoid stress concentration points. The embodiments of this application do not limit the number of reinforcing ribs and can be set as needed.

[0106] Please refer to the following: Figures 1 to 4 Secondly, embodiments of this application provide an ultra-high molecular weight polyethylene fiber spinning device, including a spinning box 400 and the aforementioned oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box, wherein the first cover 110 forms a sealed structure with the spinning box 400.

[0107] The ultra-high molecular weight polyethylene (UHMWPE) fiber spinning equipment provided in this application includes an oil fume collection device for the UHMWPE fiber spinning box, as described in the first aspect. Based on the characteristics of different stages of the production line, a first hood assembly 100 and a second hood assembly 200 are used to efficiently collect the oil fumes generated in the spinning box 400. During normal operation, the first hood assembly 100 achieves collection due to its excellent sealing performance; during start-up, the two hoods work together, greatly improving the collection efficiency of oil fumes escaping from a large space.

[0108] By switching between different enclosure components through control valve 221, it can flexibly adapt to the two significantly different operating conditions of normal production line operation and start-up. Compared with traditional single-mode collection devices, it greatly improves the adaptability to the production process. Regardless of the operating condition, the oil fume collection device of the UHMWPE fiber spinning box 400 can effectively collect oil fumes, avoiding pollution of the workshop environment and reducing the adhesion and accumulation of oil fumes in the spinning box 400. This ensures the normal operation and service life of the UHMWPE fiber spinning equipment, and also helps improve the quality of fiber products.

[0109] Please see Figure 5 and Figure 6 In some embodiments, the spinning box 400 is also provided with a bottom suction hood 500 on the side opposite to the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box.

[0110] The bottom suction hood 500 is installed on the side of the spinning box 400 away from the oil fume collection device. It can be installed by bolting, welding or clamping to ensure a firm connection and good sealing. The opening of the bottom suction hood 500 corresponds to the bottom space of the spinning box 400, which can effectively collect oil fumes and other exhaust gases escaping from the bottom of the spinning box 400.

[0111] For example, in the first direction X, the bottom suction hood 500 is located on the side of the first hood 110 away from the second hood 210.

[0112] For example, the second air inlet 211 is positioned toward the operating cavity 402 of the spinning box 400, which can be used to collect the oil fumes that are diffused in the surrounding area.

[0113] During normal operation of the production line, the spinneret 401 of the spinning box 400 generates oil fumes. The first hood 110, utilizing the sealing structure formed with the spinning box 400, efficiently collects most of the oil fumes and discharges them to the target treatment equipment through the main channel pipe 120. Simultaneously, since some oil fumes and hot air may settle and diffuse to the bottom of the box during the spinning process, the bottom suction hood 500 can also be put into operation. Figure 5 and Figure 6 The direction of the middle arrow indicates the flow of oil fumes. The bottom suction hood 500 is connected to an exhaust system, such as a centrifugal fan, which generates negative pressure to draw oil fumes and exhaust gases escaping from the bottom of the spinning box 400 into the bottom suction hood 500. These are then transported through a dedicated pipeline to treatment equipment, which may be the same as or different from the oil fume collection device, for further processing. For example, the exhaust gas collected by the bottom suction hood 500 can be pre-filtered to remove larger particulate impurities before being mixed with the oil fumes collected by the oil fume collection device for deeper purification.

[0114] During the start-up phase, before the spinning tank 600 is raised, the first hood 110 and the second hood 210 of the fume collection device operate simultaneously, jointly collecting the fumes generated by the spinneret 401. The bottom suction hood 500 also operates continuously. Due to the large amount of fumes generated and their wider diffusion range during start-up, the suction power of the bottom suction hood 500 can be appropriately increased to enhance its collection capacity of escaping fumes and exhaust gases. At this time, the exhaust gas collected by the bottom suction hood 500, together with the fumes collected by the two hoods, is transported through their respective channels to the subsequent processing stage, ensuring that the workshop environment is not polluted by fumes.

[0115] By installing an oil fume collection device on one side of the spinning box 400 and a bottom suction hood 500 on the other side, comprehensive collection of oil fumes escaping from different parts of the spinning box 400 is achieved. Compared with spinning equipment that relies on only a single collection device, this greatly improves the oil fume collection efficiency, reduces the diffusion of oil fumes in the workshop, ensures workshop air quality, and is beneficial to the health of operators and the normal operation of equipment.

[0116] Meanwhile, the bottom suction hood 500 can promptly remove hot air and exhaust gas from the bottom of the spinning box 400, reducing the temperature and exhaust gas concentration at the bottom of the box and improving the spinning environment. This helps stabilize spinning process parameters and improve the quality stability of ultra-high molecular weight polyethylene fibers. For example, a stable temperature environment can reduce fiber defects during the molding process and improve fiber strength and uniformity.

[0117] Understandably, the bottom suction hood 500 is also connected to the suction device, which is a power source that provides suction for the delivery of fumes. For example, the suction device can be a variable frequency vacuum pump or a fan.

[0118] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fume collection device for an ultra-high molecular weight polyethylene fiber spinning box, characterized in that, include: The first cover assembly includes a first cover and a main channel pipe. The first cover includes a first air inlet and a sealing element surrounding the first air inlet. The first cover forms a sealed structure with the spinneret of the spinning box through the sealing element. The first cover is connected to the main channel pipe on the side opposite to the first air inlet. The second cover assembly is connected in parallel with the first cover assembly. The second cover assembly includes a second cover and a branch channel pipe. The second cover includes a second air inlet. The second cover is connected to the branch channel pipe on the side opposite to the second air inlet. The branch channel pipe is provided with a control valve. The control valve can control the connection and disconnection between the branch channel pipe and the main channel pipe. The first cover and the second cover are arranged side by side along a first direction, which intersects with the direction from the spinning box to the first cover; In the first operating state, the control valve controls the main channel pipe and the branch channel pipe to be connected, and the oil fumes generated by the spinneret of the spinning box enter the first hood and the second hood respectively through the first air inlet and the second air inlet. The main channel pipe and the branch channel pipe exhaust the oil fumes to the target location. In the second operating state, the control valve controls the branch channel pipe to be disconnected from the main channel pipe, and the oil fumes generated by the spinneret of the spinning box enter the first hood through the first air inlet. The main channel pipe exhausts the oil fumes to the target location.

2. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to claim 1, characterized in that, The main channel pipe includes a main air vent, through which some of the oil fumes enter the main channel pipe. A first guide plate connected to its inner wall is provided inside the first hood. The projection of the main air vent from the spinning box onto the first hood falls into the first guide plate. The first guide plate can guide the oil fumes dripping from the main channel pipe to the inner wall of the first hood. The branch channel pipe fitting includes a branch air outlet, through which some of the oil fumes enter the branch channel pipe fitting. The second hood is provided with a second guide plate connected to its inner wall. The projection of the branch air outlet along the direction from the spinning box to the first hood falls into the second guide plate. The second guide plate can guide the oil fumes dripping from the branch channel pipe fitting to the inner wall of the second hood.

3. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to claim 2, characterized in that, The extension direction of the first guide plate has a first preset angle with the plane where the first air inlet is located, and the value of the first preset angle is 45 degrees. o ~70 o ; The extension direction of the second guide plate has a second preset angle with the plane where the second air inlet is located, and the value of the second preset angle is 45 degrees. o ~70 o .

4. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to claim 1, characterized in that, The inner wall of the first cover is provided with a first guide channel, which is arranged in a spiral pattern along the inner wall of the first cover. The inner wall of the second cover is provided with a second flow guide channel, which is arranged in a spiral pattern along the inner wall of the second cover. The first cover and the second cover have a connecting part, and the connecting part is provided with an oil receiving groove, which is connected to the first guide groove and the second guide groove respectively.

5. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to claim 4, characterized in that, The first guide channel has a first preset slope, the value of which is 3% to 8%; The second guide channel has a second preset slope, the value of which is 3% to 8%; The slope direction of the first guide channel and the second guide channel is towards the oil receiving channel.

6. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to claim 4, characterized in that, It also includes an oil collection and delivery pipeline, which is connected to the oil receiving tank to receive the oil fumes collected in the oil receiving tank.

7. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to any one of claims 1-6, characterized in that, The cross-sectional area of ​​the second air inlet is smaller than that of the first air inlet.

8. The oil fume collection device for ultra-high molecular weight polyethylene fiber spinning box according to any one of claims 1-6, characterized in that, The thickness of the first cover and / or the second cover is 2~3mm, and the first cover and / or the second cover are provided with reinforcing ribs.

9. A spinning device for ultra-high molecular weight polyethylene fibers, characterized in that, The invention includes a spinning box and an oil fume collection device for an ultra-high molecular weight polyethylene fiber spinning box as described in any one of claims 1-8, wherein the first cover forms a sealed structure with the spinning box.

10. The ultra-high molecular weight polyethylene fiber spinning equipment according to claim 9, characterized in that, The spinning box is also equipped with a bottom suction hood on the side opposite to the oil fume collection device for the ultra-high molecular weight polyethylene fiber spinning box.

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