Melt spinning flow guide heat dissipation device
By introducing a central air vent and an arc-shaped mesh guide plate into the melt spinning device, the problem of fiber breakage caused by uneven cooling of cold air was solved, achieving uniform distribution of cold air and stable cooling of fibers, thus improving spinning quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINTY SCI-TECH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-05-29
AI Technical Summary
In existing melt spinning equipment, uneven cooling by cold air leads to uneven heat dissipation, and excessive air force causes filament breakage, which affects spinning quality and efficiency.
A flow-guiding and heat dissipation device was designed, which includes a central vent pipe, an air outlet, and an arc-shaped mesh guide plate. The flow rate is slowed down by the horn-shaped air outlet, and the arc-shaped mesh guide plate is used to achieve uniform distribution of cold air. Combined with the mesh support plate, the structure is stabilized and an orderly airflow path is formed.
It achieves uniform distribution and slow-flow delivery of cold air, avoids fiber breakage, ensures uniform fiber cooling, and improves spinning quality and production efficiency.
Smart Images
Figure CN224299470U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of melt spinning equipment accessories, specifically to a melt spinning heat dissipation device. Background Technology
[0002] Melt spinning is an important fiber preparation method widely used in industrial production. Its principle is to heat the polymer to a molten state, extrude it through a spinneret, and cool and solidify it in a specific environment to form fibers.
[0003] Currently, most common spinning cooling devices use outer ring cold air cooling. This method causes the outer ring cold air to flow towards the center, resulting in excessively high temperatures in the central area that cannot be effectively discharged. Viscosity-temperature sensitive materials such as polycarbonate have extremely demanding requirements for the processing environment. Temperature instability can easily lead to adverse phenomena such as sticking (abnormal adhesion of material to the spinneret surface after being extruded from the spinneret orifice during spinning), fiber breakage (fiber breakage during spinning), and fiber drift (fiber drifting due to airflow generated by the winding speed or the blowing of the outer ring cold air during spinning), which seriously affect product quality and production efficiency.
[0004] To avoid the aforementioned problems, utility model patent CN220012908U discloses a melt spinning heat dissipation and flow guiding device, comprising: a spinneret, a fixed base, an upper flow guiding sleeve, a filter plate, and a lower flow guiding sleeve. The spinneret has a central mounting area without exit holes. The fixed base is located at the bottom of the mounting area of the spinneret. The upper flow guiding sleeve is mounted on the fixed base. The lower flow guiding sleeve is detachably connected to the upper flow guiding sleeve, and the filter plate is located at the connection between the upper and lower flow guiding sleeves. Both the upper and lower flow guiding sleeves are hollow structures, and the upper flow guiding sleeve has multiple ventilation holes. This melt spinning heat dissipation and flow guiding device is suitable for spinning high viscosity-temperature sensitive ceramic precursors, and can help reduce plate sticking, fiber breakage, and the entrainment of foreign matter such as broken fibers into the finished fiber during the melt spinning process of ceramic precursors, thus reducing the impact on quality.
[0005] While this technical solution has its advantages, most current melt spinning heat dissipation devices still have some shortcomings in use. For example, they cannot guide the cool air evenly and slowly to the spinning part, which can easily lead to uneven heat dissipation and excessive airflow causing filament breakage, thus affecting the spinning effect and causing inconvenience to users. In view of this, we propose a melt spinning heat dissipation device. Utility Model Content
[0006] The purpose of this invention is to provide a melt spinning heat dissipation device to solve the defects mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A melt spinning heat dissipation and flow guiding device includes a spinneret body with multiple spinneret holes. An outer mesh cylinder is fixedly installed on the outer side of the spinneret body. A central vent pipe is provided at the center of the outer mesh cylinder. Multiple mesh support plates arranged in annular and equally spaced rings are fixedly installed between the outer annular side of the central vent pipe and the inner wall of the outer mesh cylinder. Two air inlet pipes for air intake are provided on the central vent pipe. Multiple air outlet holes are provided on the annular side of the central vent pipe. An arc-shaped mesh guide plate for uniform air flow is provided at the outer opening of each air outlet hole.
[0009] Preferably, the outer mesh cylinder has a mesh-like cylindrical structure, and the arrangement direction of the outer mesh cylinder is the same as the depth direction of the spinneret holes;
[0010] This feature facilitates the normal outward discharge of internal gases.
[0011] Preferably, the mesh support plate has a mesh-like plate structure, the cross-section of the air outlet is trumpet-shaped, and the outer diameter of the air outlet increases sequentially from the inside to the outside;
[0012] This setting reduces the airflow velocity at the air outlet to prevent the spinning fibers from being blown away and broken.
[0013] Preferably, an end flange ring is fixedly installed at the rear end of the outer mesh cylinder, and the end flange ring is fixedly installed on the outer frame.
[0014] Preferably, a flow guide baffle is fixedly installed on the inner wall of the central vent pipe, the flow guide baffle divides the internal space of the central vent pipe into an upper chamber and a lower chamber, and the two air inlet pipes are respectively connected to the corresponding upper chamber and lower chamber.
[0015] Preferably, a V-shaped mesh support frame is fixedly installed on the wall of the air outlet, and the arc-shaped mesh guide plate is fixedly installed on the V-shaped mesh support frame;
[0016] Preferably, the cross-section of the V-shaped mesh support frame is V-shaped, and each side plate of the V-shaped mesh support frame is a mesh-like plate structure;
[0017] The above two settings provide support for the arc-shaped mesh guide plate, while the mesh structure also facilitates normal ventilation operations.
[0018] Preferably, the length of the central vent tube is equal to the length of the outer mesh tube, and the front projection of the spinneret is located outside the front projection of the central vent tube.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. This utility model, by setting a central ventilation pipe, an air outlet, and an arc-shaped mesh guide plate, allows external cold air to enter the central ventilation pipe through the air inlet pipe. The flow rate is slowed down by the trumpet-shaped air outlet, and then further guided by the arc-shaped mesh guide plate, so that the airflow flows evenly and gently to the spinning part. This achieves uniform distribution and slow flow of cold air, thus avoiding fiber breakage due to excessive wind force and ensuring uniform fiber cooling.
[0021] 2. This utility model provides stable support for the overall structure by setting multiple ring-shaped mesh support plates between the outer mesh cylinder and the central vent pipe. The mesh structure does not obstruct airflow, and the mesh design of the outer mesh cylinder, combined with the internal airflow, forms an orderly ventilation path, realizing smooth airflow circulation inside the device. This improves heat dissipation efficiency and avoids the phenomenon of sticking to the plate caused by excessive local temperature. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is one of the partial structural schematic diagrams of this utility model;
[0024] Figure 3 This is a second schematic diagram of a partial structure of this utility model;
[0025] The meanings of the labels in the diagram are as follows:
[0026] 1. Spinneret body; 10. Spinneret holes;
[0027] 2. Outer mesh cylinder; 20. End flange ring; 21. Mesh support plate;
[0028] 3. Central vent pipe; 30. Upper chamber; 31. Lower chamber; 32. Flow guide baffle; 33. Air inlet pipe; 34. Air outlet; 35. V-shaped mesh support frame; 36. Arc-shaped mesh guide plate. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figures 1-3This utility model provides a technical solution: a melt spinning heat dissipation device, including a spinneret body 1, a plurality of spinneret holes 10 provided on the spinneret body 1, an outer mesh cylinder 2 fixedly installed on the outer side of the spinneret body 1, the spinneret body 1 fixedly installed on the inner wall of the rear end of the outer mesh cylinder 2, the outer mesh cylinder 2 is a mesh-shaped cylinder structure, the arrangement direction of the outer mesh cylinder 2 is the same as the depth direction of the spinneret holes 10, so that the airflow around the fiber extruded from the spinneret holes 10 can be smoothly discharged through the outer mesh cylinder 2, avoiding airflow accumulation affecting heat dissipation, while the mesh structure does not hinder the normal formation of the fiber, ensuring that ventilation and spinning processes do not interfere with each other.
[0031] In this embodiment, a central vent pipe 3 is provided at the center of the outer mesh cylinder 2. Multiple mesh support plates 21 arranged in a ring at equal intervals are fixedly installed between the outer annular side of the central vent pipe 3 and the inner wall of the outer mesh cylinder 2. The mesh support plates 21 have a mesh-shaped plate structure. Two air inlet pipes 33 for air intake are provided on the central vent pipe 3. Multiple air outlet holes 34 are provided on the annular side of the central vent pipe 3. The cross-section of the air outlet holes 34 is trumpet-shaped, and the outer diameter of the air outlet holes 34 increases from the inside to the outside. This allows the mesh support plates 21 to stably connect the central vent pipe 3 and the outer mesh cylinder 2 while utilizing the mesh to prevent airflow from being blocked. The trumpet-shaped air outlet holes 34 slow down the outflow speed of cold air, preventing excessive wind force from directly impacting the fibers and causing fiber breakage, thus improving the gentleness of the airflow.
[0032] like Figure 3 As shown, an arc-shaped mesh guide plate 36 is provided at the outer opening of the air outlet 34 to ensure uniform airflow. The arc-shaped mesh guide plate 36 guides the cold air to diffuse evenly around the fiber, avoiding filament drift caused by local airflow concentration and improving cooling uniformity.
[0033] like Figure 1 and Figure 2 As shown, an end flange ring 20 is fixedly installed at the rear end of the outer mesh cylinder 2. The end flange ring 20 is fixedly installed on the external frame by multiple fastening bolts, which facilitates the fixing, installation and disassembly operations.
[0034] like Figure 3 As shown, a flow guide baffle 32 is fixedly installed on the inner wall of the central vent pipe 3. The flow guide baffle 32 divides the internal space of the central vent pipe 3 into an upper chamber 30 and a lower chamber 31. Two air inlet pipes 33 are connected to the corresponding upper chamber 30 and lower chamber 31 respectively, so as to realize ventilation and reasonable heat dissipation.
[0035] like Figure 3As shown, a V-shaped mesh support frame 35 is fixedly installed on the wall of the air outlet 34, and an arc-shaped mesh guide plate 36 is fixedly installed on the V-shaped mesh support frame 35. The cross-section of the V-shaped mesh support frame 35 is V-shaped, and each side plate of the V-shaped mesh support frame 35 is a mesh plate structure, which makes the V-shaped mesh support frame 35 stably support the guide plate while the mesh design does not obstruct the airflow.
[0036] In this embodiment, the length of the central air pipe 3 is equal to the length of the outer mesh cylinder 2, and the front projection of the spinneret 10 is located outside the front projection of the central air pipe 3, so that the cold air sent out by the central air pipe 3 can fully cover all the fibers extruded from the spinneret 10 from the inside out, ensuring that each fiber can be effectively cooled and improving the overall spinning quality.
[0037] When using the melt spinning heat dissipation device of this utility model, the outer mesh cylinder 2 is first fixed to the external frame by the end flange ring 20 to ensure the stability of the spinneret body 1. The external cold air enters the upper chamber 30 and lower chamber 31 of the central ventilation pipe 3 through the two air inlet pipes 33 respectively, and the upper and lower areas are independently supplied with air by the guide baffle 32.
[0038] Cold air flows out from the funnel-shaped air outlet 34 of the central ventilation pipe 3. The arc-shaped mesh guide plate 36 supported by the V-shaped mesh support frame 35 guides the cold air evenly to the fibers extruded from the spinneret 10. The mesh support plate 21 connects the central ventilation pipe 3 and the outer mesh cylinder 2 without obstructing the airflow. At the same time, the mesh structure of the outer mesh cylinder 2 allows the hot airflow around the fibers to be discharged smoothly, realizing the flow guidance and heat dissipation operation.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A melt spinning heat dissipation device, comprising a spinneret body (1), characterized in that: The spinneret body (1) is provided with a plurality of spinneret holes (10). An outer mesh cylinder (2) is fixedly installed on the outer side of the spinneret body (1). A central air vent (3) is provided at the center of the outer mesh cylinder (2). A plurality of mesh support plates (21) arranged in a ring at equal intervals are fixedly installed between the outer annular side of the central air vent (3) and the inner wall of the outer mesh cylinder (2). Two air inlet pipes (33) for air intake are provided on the central air vent (3). A plurality of air outlet holes (34) are provided on the annular side of the central air vent (3). An arc-shaped mesh guide plate (36) for uniform air flow is provided at the outer opening of the air outlet hole (34).
2. The melt spinning heat dissipation device according to claim 1, characterized in that: The outer mesh cylinder (2) has a mesh-like cylindrical structure, and the arrangement direction of the outer mesh cylinder (2) is the same as the depth direction of the spinneret hole (10).
3. The melt spinning heat dissipation device according to claim 1, characterized in that: The perforated support plate (21) has a perforated plate structure, and the cross-section of the air outlet (34) is trumpet-shaped. The outer diameter of the air outlet (34) increases sequentially from the inside to the outside.
4. The melt spinning heat dissipation device according to claim 1, characterized in that: An end flange ring (20) is fixedly installed at the rear end of the outer mesh cylinder (2), and the end flange ring (20) is fixedly installed on the outer frame.
5. The melt spinning heat dissipation device according to claim 1, characterized in that: A flow guide baffle (32) is fixedly installed on the inner wall of the central vent pipe (3). The flow guide baffle (32) divides the internal space of the central vent pipe (3) into an upper chamber (30) and a lower chamber (31). The two air inlet pipes (33) are respectively connected to the corresponding upper chamber (30) and lower chamber (31).
6. The melt spinning heat dissipation device according to claim 1, characterized in that: A V-shaped mesh support frame (35) is fixedly installed on the wall of the air outlet (34), and the arc-shaped mesh guide plate (36) is fixedly installed on the V-shaped mesh support frame (35).
7. The melt spinning heat dissipation device according to claim 6, characterized in that: The V-shaped mesh support frame (35) has a V-shaped cross section, and each side plate of the V-shaped mesh support frame (35) is a mesh plate structure.
8. The melt spinning heat dissipation device according to claim 1, characterized in that: The length of the central vent pipe (3) is equal to the length of the outer mesh tube (2), and the front projection of the spinneret hole (10) is located outside the front projection of the central vent pipe (3).