Gas switching device and chinlon spinning equipment
Problems that cannot be effectively solved by existing technologies through gas switching devices and nylon spinning equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-03
AI Technical Summary
In traditional nylon spinning production, the use of superheated steam can easily cause nozzle clogging, affecting product quality. Existing technologies cannot effectively solve this problem by providing gas switching devices and methods.
A gas switching device and a nylon spinning equipment are provided to solve problems that cannot be effectively solved by existing technologies.
This addresses a problem that existing technologies cannot effectively solve in gas switching devices and nylon spinning equipment.
Smart Images
Figure CN224077616U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of nylon spinning equipment technology, and more particularly to a gas switching device and nylon spinning equipment. Background Technology
[0002] Nylon, generally referring to nylon, was the world's first synthetic fiber. It is characterized by high strength, good abrasion resistance, and good elasticity, and is widely used in textiles, clothing, medical devices, automobile manufacturing, and sporting goods. Spinning technology is a crucial step in nylon production, directly affecting the quality of the nylon fiber. By precisely controlling spinning process parameters, such as temperature, pressure, and rotation speed, it is possible to ensure that nylon possesses excellent physical properties such as strength, elongation, and abrasion resistance.
[0003] In traditional nylon spinning production, to prevent thermal oxidation of nylon with oxygen, which could affect the quality of the finished yarn, a superheated steam device is usually installed near the spinning assembly. The superheated steam device generates superheated steam and injects it into the assembly through gas nozzles to create an inert environment. This reduces the contact between the nylon melt and air, effectively inhibiting oxidation and ensuring the stability of the production process and the quality of the finished product.
[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this application and facilitating the understanding of those skilled in the art. Utility Model Content
[0005] The inventors discovered that in the traditional nylon spinning process, the use of superheated steam easily leads to clogging of the gas nozzles, resulting in uneven steam output, color variations in the yarn cake, and reduced quality of the finished yarn. Furthermore, superheated steam can condense into water in the pipes; when the pressure is unstable, this condensed water can spray onto the components, potentially causing them to break. While using nitrogen can prevent nozzle clogging, switching from steam to nitrogen requires stopping the machine to replace the pipes, increasing time and labor costs.
[0006] Furthermore, the gas nozzle is located on only one side of the module, a design that results in unstable and uneven airflow around the module. On the side of the module closer to the gas nozzle, the concentrated injection of superheated steam creates localized high-pressure areas, while on the side farther from the gas nozzle, the airflow is sparser, leading to an imbalance in gas flow. This uneven airflow distribution not only affects the contact efficiency between the nylon melt and the inert environment but may also exacerbate oxidation reactions in some areas, thus impacting the quality of the finished yarn.
[0007] To address at least one of the aforementioned technical problems, embodiments of this application provide a gas switching device and nylon spinning equipment. This allows for rapid gas switching according to actual needs, reducing time and labor costs and improving the quality of the finished yarn.
[0008] According to one aspect of the embodiments of this application, a gas switching device is provided, the gas switching device comprising: a gas switching section including at least two pressure reducing valves, the at least two pressure reducing valves being used to control a type of gas in at least two first pipes to enter a second pipe; wherein, a type of gas flows in one of the first pipes; a filter buffer section, which is a closed structure and connected to the second pipe and a third pipe, wherein gas in the second pipe enters the filter buffer section, and gas in the filter buffer section enters a gas spray ring via the third pipe; a housing, wherein the gas spray ring, an assembly, and at least a portion of the third pipe are disposed therein; and the gas spray ring and the assembly, the assembly being located on one side of the gas spray ring, the gas spray ring spraying gas from the third pipe onto the assembly.
[0009] In some embodiments, the number of pressure-reducing valves is the same as the number of the first pipes.
[0010] In some embodiments, the bottom of the filter buffer is a cone with its tip pointing downwards; the tip of the cone has a drain outlet through which liquid flows out; the filter buffer also includes a filter body and a drain valve, the filter body filters impurities in the gas, and the drain valve controls the speed of the liquid flowing out of the drain outlet.
[0011] In some embodiments, the drain valve is a ball valve.
[0012] In some embodiments, the gases flowing through the at least two first pipes are water vapor and nitrogen, respectively.
[0013] In some embodiments, the liquid discharged from the filter buffer is water condensed from water vapor.
[0014] In some embodiments, the housing further includes an inner cavity with its opening facing downwards, within which the gas spray ring and the assembly are located. In some embodiments, the gas spray ring has at least two jet holes; the at least two jet holes are evenly distributed circumferentially on the gas spray ring.
[0015] In some embodiments, the gas switching device further includes a pressure gauge located on the side of the third pipeline near the filter buffer section.
[0016] According to another aspect of the embodiments of this application, a nylon spinning device is provided, the nylon spinning device comprising: the gas switching device described in any of the above claims.
[0017] One of the beneficial effects of this application's embodiments is that the gas switching device achieves rapid switching of the gas input to the filter buffer section through the gas switching part. The gas enters the annular gas spray ring through the closed filter buffer section. This not only reduces time and labor costs and the probability of nozzle clogging, but also improves the quality of the finished yarn.
[0018] Referring to the following description and accompanying drawings, specific implementation methods of the embodiments of this application are disclosed in detail, indicating how the principles of the embodiments of this application can be adopted. It should be understood that the implementation methods of this application are not limited in scope. Within the spirit and scope of the appended claims, the implementation methods of this application include many changes, modifications, and equivalents. Attached Figure Description
[0019] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other implementation methods based on these drawings without creative effort. In the drawings:
[0020] Figure 1 This is a schematic diagram of a gas switching device according to an embodiment of this application;
[0021] Figure 2 This is a schematic diagram of water vapor flow according to an embodiment of this application;
[0022] Figure 3 This is a schematic diagram of drainage in the filter buffer section according to an embodiment of this application. Detailed Implementation
[0023] Referring to the accompanying drawings, the foregoing and other features of the embodiments of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of the embodiments of this application can be adopted. It should be understood that this application is not limited to the described embodiments; rather, the embodiments of this application include all modifications, variations, and equivalents falling within the scope of the appended claims.
[0024] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.
[0025] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.
[0026] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. The term "comprising / including" as used herein means the presence of a feature, integral, step, or component, but does not exclude the presence or addition of one or more other features, integrals, steps, or components.
[0027] The nylon spinning equipment of this application embodiment is a key piece of equipment for processing polyamide (PA) chips into fibers, and is widely used in civilian textiles, industrial yarns (such as tire cords and seat belts), and other fields. Its core process is melt spinning, and the process flow includes: preparing spinning melt, extruding the melt through spinnerets to form melt streams, cooling and solidifying the melt streams to form nascent fibers, oiling the nascent fibers, and winding them. In the step of extruding the melt through spinnerets to form melt streams, it is necessary to ensure that the melt is in an inert environment, such as a space filled with inert gas, to reduce the contact between the melt and air, thereby inhibiting oxidation reactions and ensuring the stability of the production process and the quality of the finished product.
[0028] The gas described in the embodiments of this application is a gas that does not react with the melt and the apparatus. It may be nitrogen, water vapor, superheated water vapor or other gases, and this application is not limited to these.
[0029] The nylon spinning equipment of this application embodiment can select appropriate gases based on the type of yarn produced to ensure the quality of the finished yarn.
[0030] The following will describe in detail the nylon spinning equipment of this application embodiment, using nitrogen and water vapor respectively through a first pipeline. It should be understood that the embodiments shown below are merely illustrative and may include more or fewer components.
[0031] This application provides a nylon spinning device, which includes a gas switching device.
[0032] Figure 1 This is a schematic diagram of a gas switching device according to an embodiment of this application, showing the overall structure of the gas switching device. Figure 1 As shown, the gas switching device 100 includes: a gas switching section 101 located on a first pipe 102; a filter buffer section 104 connected to the first pipe 102 via a second pipe 103; a housing 106 having a gas spray ring 107 and a component 108 inside; a gas spray ring 107 connected to the filter buffer section 104 via a third pipe 105; and a component 108 located on one side of the gas spray ring 107.
[0033] The gas switching unit 101 includes at least two pressure reducing valves. Figure 1 As shown in 1011 and 1012), these at least two pressure reducing valves ( Figure 1 1011 and 1012 shown are used to control at least two first pipes ( Figure 1 A gas in pipes 1021 and 1022 (shown in the diagram) enters the second pipe 103. A gas flows in one of the first pipes, for example, water vapor flows in the first pipe 1021 and nitrogen flows in the first pipe 1022. The filter buffer section 104 is a closed structure and is connected to the second pipe 103 and the third pipe 105. The gas in the second pipe 103 enters the filter buffer section 104, and the gas in the filter buffer section 104 enters the gas spray ring 107 via the third pipe 105. The interior of the housing 106 includes the gas spray ring 107, the assembly 108, and at least a portion of the third pipe 105.
[0034] Therefore, rapid gas switching can be achieved through the gas switching device, reducing time and labor costs, decreasing the probability of nozzle blockage, and extending the service life of the nozzles. Furthermore, by placing the gas spray ring and components inside the housing, gas is ensured to circulate within the housing to create an inert environment, reducing the contact between the nylon melt and air, effectively inhibiting oxidation reactions, thereby improving the stability of the production process and the quality of the finished product. In addition, the closed filter buffer section can stabilize the gas pressure and improve the quality of the finished yarn.
[0035] In some embodiments, the number of pressure-reducing valves is the same as the number of first pipes, that is, one pressure-reducing valve controls the flow of gas in one first pipe, but this application is not limited thereto. For example, the same pressure-reducing valve can be installed on multiple first pipes to achieve control of the flow of gas in multiple first pipes by one pressure-reducing valve.
[0036] Figure 2 This is a schematic diagram of water vapor flow according to an embodiment of this application. Figure 2 As shown, water vapor enters the gas switching device 100 through the first pipe 1021, and nitrogen enters the gas switching device 100 through the first pipe 1022. When water vapor is needed for spinning, the gas switching unit 101 controls the pressure reducing valve 1011 to open, while the pressure reducing valve 1012 remains closed. At this time, water vapor enters the second pipe 103 through the first pipe 1021, while nitrogen is blocked by the pressure reducing valve 1012 and cannot enter the second pipe 103.
[0037] This allows for precise switching of gases, preventing multiple gases from flowing through the second pipe, which could cause gas mixing or even reactions, thus affecting the quality of the final finished yarn.
[0038] In some embodiments, such as Figure 1 As shown, water vapor enters the filter buffer section 104 through the first pipe 102 and the second pipe 103. When the water vapor flows in the pipe, it may condense into water. The water enters the filter buffer section 104 in the direction of water vapor flow, which avoids the water condensed from the water vapor accumulating in the pipe and affecting the gas flow, and also avoids the water condensed from the water vapor spraying towards the component in the direction of gas flow, causing the component to break.
[0039] In some embodiments, such as Figure 1 As shown, the bottom of the filter buffer section 104 is a cone with the tip pointing downwards. The tip of the cone has a drain outlet through which liquid flows out.
[0040] In some embodiments, the liquid discharged from the filter buffer section 104 is water condensed from water vapor.
[0041] For example, such as Figure 1 As shown, water condensed from water vapor enters the filter buffer section 104. Since the bottom of the filter buffer section 104 is a cone with the pointed opening facing downwards, the water flows out of the filter buffer section 104 through the drain outlet at the tip of the cone under the action of gravity.
[0042] In some embodiments, such as Figure 1As shown, the upper half of the filter buffer 104 is a cylinder, and the lower half is a cone with the pointed end facing downwards, but this application is not limited to this. The filter buffer 104 as a whole can also be a cone with the pointed end facing downwards, or other shapes suitable for drainage, such as a cube with the bottom angled downwards.
[0043] This prevents water vapor condensation or other liquids from accumulating excessively in the filter buffer section, thus occupying the space of the filter buffer section, reducing the effective area for gas flow, causing gas flow rate fluctuations and pressure imbalances, and affecting the quality of the final finished yarn.
[0044] In some embodiments, the filter buffer 104 includes a drain valve that controls the rate at which liquid flows out of the drain outlet. Figure 3 This is a schematic diagram of the drainage of the filter buffer section 104 according to an embodiment of this application, as shown. Figure 3 As shown, the water condensed from water vapor enters the filter buffer section 104. When the drain valve 110 is opened, the water condensed from water vapor flows out of the filter buffer section 104 from the drain outlet.
[0045] In some embodiments, the drain valve 110 may be a ball valve, but this application is not limited thereto. For example, the drain valve 110 may also be a butterfly valve, a gate valve, etc.
[0046] In some embodiments, when the liquid in the filter buffer 104 accumulates to a threshold, for example, when the liquid in the filter buffer 104 reaches a threshold height, the drain valve 110 is opened and the liquid flows out from the drain outlet; after most or all of the liquid in the filter buffer 104 has flowed out, the drain valve 110 is closed to prevent external gas from entering the filter buffer 104.
[0047] Therefore, the flow rate of the liquid can be controlled by the drain valve to prevent external gas from entering the gas switching device and thus affecting the quality of the final finished yarn.
[0048] In some embodiments, the filter buffer 104 further includes a filter body that filters impurities in the gas, such as small particles and volatile organic compounds. The filter body may be a ceramic filter, an activated carbon adsorption layer, or the like.
[0049] This prevents impurities in the gas from entering the jet orifice and clogging it.
[0050] In some embodiments, the gases flowing through at least two of the first pipes are water vapor and nitrogen, respectively, but this application is not limited thereto. For example, in two first pipes, one first pipe flows with water vapor and the other first pipe flows with nitrogen. As another example, in three first pipes, one first pipe flows with water vapor, one first pipe flows with nitrogen, and the last first pipe flows with other gases; or, one first pipe flows with water vapor, and the remaining first pipes flow with nitrogen.
[0051] In some embodiments, such as Figure 1 As shown, the gas in the filter buffer section 104 enters the third pipe 105, and at least a portion of the third pipe 105 is contained within the housing 106. The housing 106 heats the gas in the third pipe 105 to prevent the temperature of the gas in the third pipe 105 from dropping, thereby affecting the quality of the finished yarn.
[0052] In some embodiments, such as Figure 1 As shown, the housing 106 also includes an inner cavity 109 with its opening facing downwards, where the gas spray ring and components are located. Figure 1 As shown, the inner cavity 109 is equipped with a gas spray ring 107 and a component 108. Gas entering the gas spray ring 107 through the third pipe 105 enters the inner cavity 109 through the jet hole. This ensures that the gas flows in the inner cavity to form an inert environment, reduce the contact between the nylon melt and the air, effectively inhibit the oxidation reaction, and thus ensure the stability of the production process and the quality of the finished product. In addition, setting the inner cavity with the opening facing downward can slow down the gas escape rate, prolong its contact time with the melt, and enhance the protective effect.
[0053] In some embodiments, the gas spray ring 107 is annular and has at least two air jet holes, which are evenly distributed circumferentially on the gas spray ring 107. This even distribution refers to a distribution along an angle or the circumference of the gas spray ring 107. This avoids the problem of easy clogging of the gas spray ring, ensures stable and uniform airflow around the component, reduces disturbance to the nascent filament, and improves the quality of the produced filament.
[0054] In some embodiments, such as Figure 1 As shown, the gas switching device 100 also includes a pressure gauge 111, which is located on the side of the third pipeline near the filter buffer section 104. Figure 1 As shown, pressure gauge 111 monitors the gas entering the third pipe 105 from the filter buffer section 104 to prevent the outflowing gas pressure from being too high, which would affect the quality of the finished yarn.
[0055] It is worth noting that the above description only provides an exemplary illustration of the gas switching device and nylon spinning equipment related to this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. Furthermore, the gas switching device and nylon spinning equipment may also include other configurations, which can be found in related technologies. Additionally, the above description only provides an exemplary illustration of each component, but this application is not limited thereto, and the specific details of each component can be found in related technologies; furthermore, components not shown in the figures may be added, or one or more components in the figures may be removed.
[0056] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.
[0057] Although this disclosure and the disclosure which is currently considered to be its best mode have been described in a manner that identifies the inventor and enables those skilled in the art to make and use it, it should be understood and appreciated that many equivalents of the exemplary embodiments disclosed herein exist and that various modifications and variations may be made thereto without departing from the scope and spirit of this disclosure, which is not limited to the exemplary embodiments but rather to the appended claims.
Claims
1. A gas switching device, characterized in that, The gas switching device includes: A gas switching unit includes at least two pressure reducing valves for controlling the entry of a gas from at least two first pipes into a second pipe; wherein a gas flows through one of the first pipes. The filter buffer section is a closed structure connected to the second pipe and the third pipe. The gas in the second pipe enters the filter buffer section, and the gas in the filter buffer section enters the gas spray ring through the third pipe. A housing containing the gas spray ring, components, and at least a portion of the third conduit; and The gas spray ring and the assembly, the assembly being located on one side of the gas spray ring, the gas spray ring spraying gas from the third pipe onto the assembly.
2. The gas switching device according to claim 1, characterized in that, The number of pressure-reducing valves is the same as the number of the first pipes.
3. The gas switching device according to claim 1, characterized in that, The bottom of the filter buffer section is a cone with the pointed end facing downwards; The tip of the cone has a drain outlet through which liquid flows out. The filter buffer section also includes a filter body and a drain valve. The filter body filters impurities in the gas, and the drain valve controls the liquid flow rate from the drain outlet.
4. The gas switching device according to claim 3, characterized in that, The drain valve is a ball valve.
5. The gas switching device according to claim 1, characterized in that, The gases flowing through the at least two first pipes are water vapor and nitrogen, respectively.
6. The gas switching device according to claim 3 or 5, characterized in that, The liquid discharged from the filter buffer section is water condensed from water vapor.
7. The gas switching device according to claim 1, characterized in that, The enclosure also includes: The inner cavity has its opening facing downwards, and the gas spray ring and the assembly are located within the inner cavity.
8. The gas switching device according to claim 1, characterized in that, The gas spray ring is circular and has at least two spray holes. The at least two jet holes are evenly distributed in the circumferential direction in the gas jet ring.
9. The gas switching device according to claim 1, characterized in that, The gas switching device further includes: A pressure gauge is located on the side of the third pipe near the filter buffer section.
10. A nylon spinning device, characterized in that, The nylon spinning equipment includes the gas switching device as described in any one of claims 1 to 9.