A spinneret

Abstract

The utility model provides a kind of spinneret, belong to textile machinery technical field.Its structure includes: a plurality of shunt cone is arranged to form array in the upper end of spinneret body, the shape of the array is regular hexagon, there are a plurality of spinneret hole in the periphery of each shunt cone;Every two adjacent shunt cone is arranged at equal intervals;Every two adjacent spinneret hole is arranged at equal intervals.The utility model is designed with new structure, can optimize the spinning process of fiber, improve the dispersion uniformity and surface quality of fiber.Through the structure design and material selection of spinneret, realize efficient, stable fiber production.The spinneret includes spinneret body and multiple spinneret holes arranged on the spinneret body.The shape, size and arrangement of spinneret hole are carefully designed to achieve uniform dispersion of fiber.At the same time, spinneret body is made of high-temperature-resistant and wear-resistant material to ensure stability in high temperature and high pressure environment.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery, specifically a spinneret. Background Technology

[0002] Para-aramid fibers, due to their unique physicochemical properties such as ultra-high strength, high modulus, high temperature resistance, and acid and alkali resistance, are widely used in high-performance composite materials, aerospace, and electronic communications. The spinneret, as a key component in para-aramid fiber production, directly affects fiber quality and production efficiency. However, traditional spinneret designs suffer from problems such as unreasonable structure, low production efficiency, and unstable fiber quality. Therefore, developing a novel para-aramid spinneret is of great significance for improving fiber production efficiency and product quality. Summary of the Invention

[0003] This utility model aims to address the technical deficiencies of existing technologies by providing a spinneret to solve the technical problem of unstable spinneret quality caused by the unreasonable structure of current spinnerets used in the production of para-aramid fibers.

[0004] Another technical problem that this invention aims to solve is: how to improve the production efficiency of aramid fibers through improvements in the spinneret structure.

[0005] Another technical problem that this invention aims to solve is: how to extend the service life of the spinneret.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0007] A spinneret includes a spinneret body, as well as flow dividers and spinneret holes. A plurality of flow dividers are arranged in an array at the upper end of the spinneret body. The array is hexagonal in shape. A plurality of spinneret holes are evenly distributed on the outer periphery of each flow divider. The flow dividers are arranged at equal intervals between any two adjacent flow dividers. The spinneret holes are also arranged at equal intervals between any two adjacent spinneret holes.

[0008] Preferably, 12 spinneret holes are evenly distributed on the outer periphery of each splitter cone.

[0009] Preferably, the spinneret is a circular orifice with a diameter of 0.2~0.5mm.

[0010] Preferably, the diameter of the spinneret orifice is 0.3 mm.

[0011] Preferably, the spacing between any two adjacent spinnerets is 2 mm.

[0012] Preferably, the spinneret body is disc-shaped, with a diameter of 20~300mm and a thickness of 10~60mm.

[0013] Preferably, each spinneret body has a total of 375 flow dividers and a total of 3000 spinneret holes.

[0014] Preferably, the spinneret body is made of alloy material, and the surface of the spinneret body is polished.

[0015] Preferably, the alloy material is stainless steel or a nickel-based alloy.

[0016] Preferably, the upper outer edge of the spinneret has a transition arc surface.

[0017] Preferably, the total number of spinnerets is 100 to 5000, and the fiber diameter corresponding to a single spinneret is 15 to 20 μm.

[0018] Preferably, the surface of the spinneret body is treated with a spray coating.

[0019] Preferably, the spinneret orifice is elliptical.

[0020] This invention provides a spinneret for the production of para-aramid fibers. The technical solution employs a novel structural design that optimizes the fiber spinning process, improving fiber dispersion uniformity and surface quality. By improving the structural design and material selection of the spinneret, efficient and stable fiber production is achieved. Specifically, the spinneret includes a spinneret body and multiple spinneret holes disposed on the spinneret body. The shape, size, and arrangement of the spinneret holes are carefully designed to achieve uniform fiber dispersion. Simultaneously, the spinneret body is made of a high-temperature resistant and wear-resistant material, ensuring stability under high-temperature and high-pressure environments.

[0021] Spinneret structural details

[0022] 1. Spinneret Design: Based on fluid dynamics principles, the shape and size of the spinneret orifice are precisely calculated and optimized to ensure that the extruded fibers form an ideal cross-sectional shape and fiber distribution. This achieves uniform fluid distribution during the spinning process, improving fiber uniformity and quality.

[0023] 2. Material Selection: The spinneret body is made of a specific alloy material, possessing excellent high-temperature resistance and wear resistance, ensuring the stability and durability of the spinneret during the production process. Simultaneously, heat treatment and surface coating techniques are used to strengthen the material, improving the adhesion between the fiber and the spinneret and enhancing surface smoothness, further extending the service life of the spinneret.

[0024] 3. Spinneret layout: Based on the actual situation of fiber production, optimize the distribution and arrangement of spinnerets to reduce fluid disturbance and friction during the spinning process, thereby improving fiber production quality and efficiency.

[0025] The working principle of this invention is to achieve efficient and stable fiber production by optimizing the structural design and material selection of the spinneret. Compared with the prior art, this invention has the following beneficial effects.

[0026] 1. Improve fiber quality: Optimize the spinneret design and plate layout to achieve uniform distribution of fluid during the spinning process, reduce fiber inhomogeneity and impurity generation, improve fiber dispersion uniformity, and make the finished fiber product quality more stable.

[0027] 2. Improve production efficiency: By adopting high-performance materials and optimized structural design, energy consumption and downtime during the production process are reduced, thereby improving production efficiency.

[0028] 3. Reduced operating costs: Improvements in structure and materials extend the lifespan of the spinneret and enhance performance stability, thereby reducing replacement frequency. This lowers maintenance costs and replacement frequency, ultimately reducing overall operating costs for the company. Attached Figure Description

[0029] Figure 1 This is a top view of the present invention;

[0030] Figure 2 This is a top-view rendering of the present invention;

[0031] Figure 3 This is a top view of a flow divider cone and its outer spinneret holes in this utility model;

[0032] Figure 4 yes Figure 3 Cross-sectional view at position AA;

[0033] Figure 5 This is a top view from another angle of observation of a flow divider cone and its outer spinneret orifice in this utility model;

[0034] Figure 6 yes Figure 5 Cross-sectional view at position BB;

[0035] In the picture:

[0036] Detailed Implementation

[0037] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0038] A spinneret, such as Figures 1-6 As shown. The thickness, diameter, and number of holes of the spinneret need to be designed comprehensively based on fiber performance requirements, production processes (such as dry-jet and wet-spinning), and equipment conditions. The following are the core parameter design standards.

[0039] 1. Thickness

[0040] Standard range: 10~50mm, must meet pressure resistance (≥50MPa) and thermal stability (no deformation at 350℃).

[0041] Special requirements: Increase to 60mm at high spinning speeds (≥300m / min) to resist the high pressure impact of the melt.

[0042] 2. Diameter

[0043] Common sizes: 20~300mm, with circular spinnerets being the mainstream (for better processing and sealing).

[0044] High-capacity production line: The 500-ton-per-year production line uses spinnerets with a diameter of ≥200mm and a hole count of up to 5000.

[0045] 3. Number of holes

[0046] Basic configuration: 100~5000 pores, with a fiber diameter of 15~20μm per pore.

[0047] High-density design: Fine fibers (e.g., 1.5D) require a pore spacing ≥ 1.15 times the pore diameter, and a pore density of 26 pores / mm. 2 .

[0048] Specific selection recommendations are shown in Table 1 below.

[0049]

[0050] Example 1

[0051] A spinneret, such as Figures 1-6 As shown, it includes a spinneret body 1, as well as a diverter cone 2 and a spinneret hole 3. A plurality of diverter cones 2 are arranged in an array at the upper end of the spinneret body 1. The array is hexagonal in shape, and a plurality of spinneret holes 3 are evenly distributed on the outer periphery of each diverter cone 2. The diverter cones 2 are arranged at equal intervals.

[0052] Example 2 (Case 1 of Parameter Co-optimization)

[0053] Based on the technical solution of Example 1, the spinneret thickness is 30mm, the diameter is 150mm, and the number of holes is 720. With the help of an air gap distance adjustment device of 3~5mm, the fiber strength dispersion is reduced by 40%.

[0054] Example 3 (Case 2 of Parameter Co-optimization: Breakthrough in Domestic Production)

[0055] Based on the technical solution of Example 1, a spinneret with a thickness of 40mm, a diameter of 250mm, and 3000 holes is used to achieve mass production of high-strength fibers with a strength of 3.5GPa.

[0056] Example 4 (Special Application Customized Solution 1: Irregular Hole Design)

[0057] Based on the technical solution of Example 1, a cross-shaped spinneret is adopted, and the thickness of the cross-shaped spinneret is increased to 35mm (to enhance structural stability), with an aperture of 0.2mm, for use in lightweight composite materials for aerospace.

[0058] Example 5 (Special Application Customized Solution 2: High Spinning Speed ​​Adaptation)

[0059] Based on the technical solution of Example 1, when the spinning speed is 400m / min, the spinneret thickness needs to be more than 50mm, and the number of holes is reduced to 200 to balance the pressure and flow rate.

[0060] Example 6

[0061] Based on the technical solution of Embodiment 1, 12 spinneret holes 3 are evenly distributed on the outer periphery of each flow divider cone 2. The spinneret holes 3 are circular, with a diameter of 0.2~0.5mm. The distance between any two adjacent spinneret holes 3 is 2mm. The spinneret body 1 is disc-shaped, with a diameter of 20~300mm and a thickness of 10~60mm. The spinneret body 1 is made of an alloy material, and its surface is polished. The alloy material is stainless steel or a nickel-based alloy. A transition arc surface 4 is provided at the upper outer edge of each spinneret hole 3. The total number of spinneret holes 3 on each spinneret body 1 is 100~5000, with each hole corresponding to a fiber diameter of 15~20μm.

[0062] Example 7

[0063] like Figures 1-6 As shown, the spinneret body 1 is circular with a diameter of 300 mm and a thickness of 20 mm. The spinneret holes 3 are circular with a diameter of 0.3 mm and a spacing of 2 mm. The spinneret holes 3 are arranged in a regular hexagonal pattern and are evenly distributed on the outer periphery of the flow divider cone 2, with a total of 3000 spinneret holes 3 and 375 flow divider cones 2. The spinneret body 1 is made of a specific alloy material and its surface is polished.

[0064] The structural features of this embodiment are as follows:

[0065] (1) Spinneret design: The spinneret is circular or elliptical in shape with a diameter of 0.3 mm (the size range can be between 0.2 and 0.5 mm). The spacing between the holes is adjusted according to the fiber diameter and production requirements to achieve uniform fiber dispersion.

[0066] (2) Spinneret body material: The spinneret body is made of high temperature resistant and wear resistant alloy materials, such as stainless steel and nickel-based alloys. These materials have good mechanical properties and high temperature resistance, and can adapt to high temperature and high pressure production environments.

[0067] (3) Spinneret surface treatment: In order to improve the adhesion between the fiber and the spinneret and the surface smoothness, the surface of the spinneret is treated in a specific way, such as polishing and spraying.

[0068] This embodiment has been applied in actual production and has achieved significant results. Experimental data shows that the fiber quality produced using the para-aramid spinneret of this embodiment is more stable, production efficiency is increased by 20%, and operating costs are reduced by 5%.

[0069] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A spinneret, comprising a spinneret body (1), characterized in that... It also includes a flow divider cone (2) and a spinneret hole (3), wherein a plurality of flow divider cones (2) are arranged in an array at the upper end of the spinneret body (1), the array being a regular hexagon, and a plurality of spinneret holes (3) are evenly distributed on the outer periphery of each flow divider cone (2); the flow divider cones (2) are arranged at equal intervals; the spinneret holes (3) are arranged at equal intervals.

2. A spinneret according to claim 1, characterized in that, Twelve spinneret holes (3) are evenly distributed on the outer periphery of each split cone (2).

3. A spinneret according to claim 1, characterized in that, The spinneret (3) is a circular hole with a diameter of 0.2~0.5mm.

4. A spinneret according to claim 1, characterized in that, The distance between any two adjacent spinnerets (3) is 2 mm.

5. A spinneret according to claim 1, characterized in that, The spinneret body (1) is in the shape of a disc, with a diameter of 20~300mm and a thickness of 10~60mm.

6. A spinneret according to claim 1, characterized in that, On each spinneret body (1), the total number of diverter cones (2) is 375, and the total number of spinneret holes (3) is 3000.

7. A spinneret according to claim 1, characterized in that, The spinneret body (1) is made of alloy material, and the surface of the spinneret body (1) is polished.

8. A spinneret according to claim 7, characterized in that, The alloy material is stainless steel or a nickel-based alloy.

9. A spinneret according to claim 1, characterized in that, The upper outer edge of the spinneret (3) has a transition arc surface (4).

10. A spinneret according to claim 1, characterized in that, On each spinneret body (1), the total number of spinneret holes (3) is 100 to 5000, and the fiber diameter corresponding to a single hole is 15 to 20 μm.

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