A connecting device and flash spinning equipment

Abstract

This application relates to the field of flash spinning equipment technology, and discloses a connecting device and a flash spinning equipment. The flash spinning equipment includes a control system, a mixing device, a nozzle assembly, and a connecting device. The connecting device includes a heating mechanism and a connecting pipeline. The connecting pipeline includes multiple connecting pipes and multiple adapters. Any two adjacent connecting pipes are connected through the adapters. By adopting the above technical solution, multiple output ends of the mixing device can be separately connected to multiple spinning nozzles through the connecting pipeline of the connecting device. This arrangement not only facilitates the adjustment and maintenance of the connecting pipeline when problems occur, but also allows for the adjustment of the extension route of the connecting pipeline according to environmental adaptability, reducing the occupied area.

Description

Technical Field

[0001] This application relates to the field of flash evaporation equipment technology, and in particular to a connecting device and flash spinning equipment. Background Technology

[0002] The working principle of flash spinning equipment is as follows: by releasing the high-temperature and high-pressure polymer solution, i.e. the spinning solution, from the spinning nozzle into a normal temperature and pressure environment, the low-boiling-point solvent is rapidly vaporized, and the polymer is rapidly solidified from the liquid state and stretched by the high-speed solvent gas to form fibers. Therefore, the spinning solution needs to be kept at a high temperature and high pressure state throughout the process of entering the spinning nozzle from the mixing device.

[0003] Currently, in the melt spinning of fibers and yarns, pipes in a spinning box are typically used to connect the spinning nozzles and the mixing device, and the temperature of multiple pipes is maintained simultaneously by a high-temperature heat medium in the spinning box. For example, CN113039311B discloses a spinning box for housing and temperature-controlling a melt distributor unit and multiple spinning nozzles, which are arranged inside a heated pressure vessel.

[0004] However, when this type of spinning box is used in the field of flash spinning, on the one hand, because flash spinning has high requirements for the spinning solution, when the temperature and pressure of the spinning solution fluctuate, if maintenance and adjustment cannot be carried out in time, it will lead to serious quality problems. However, using a spinning box makes it difficult to conveniently adjust and maintain the problematic pipelines. The production line can only be stopped, and the spinning box can be disassembled for repair, which is very inconvenient and will affect production efficiency. On the other hand, the spinning box is large in size and requires a lot of space, and it is not easy to adjust it according to the working environment. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned problems in the prior art, this application provides a connecting device and a flash spinning equipment.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted in this application include:

[0009] The connecting device includes a heating mechanism and a connecting pipeline. The connecting pipeline includes multiple connecting pipes and multiple adapters. Any two adjacent connecting pipes are connected through the adapters. Each connecting pipe includes a first pipe body, a connecting rib, and a second pipe body. The second pipe body is sleeved on the first pipe body. The first pipe body is used for flowing spinning solution. The space between the second pipe body and the first pipe body is a fluid space for flowing heat medium. The connecting rib is located in the fluid space and is used to connect the first pipe body and the second pipe body. The heating mechanism is connected to the fluid space. An inter-connector is used to provide the heat medium to the fluid space; the adapter includes a main body and two connecting parts, which are spaced apart circumferentially on the outer peripheral sidewall of the main body. The main body has a connecting pipe, and the connecting parts have a connecting port and a snap-fit ​​groove extending circumferentially along the connecting port on the side opposite to the main body. The connecting pipe is connected to the connecting port. One end of the first pipe can be snapped into the snap-fit ​​groove and connected to the connecting port. One end of the second pipe can be sleeved on the connecting part to complete the sealing of the fluid space.

[0010] Optionally, the connecting pipe further includes a first temperature detection unit. The side wall of the first pipe body has a first detection hole, and the side wall of the second pipe body has a second detection hole. The first temperature detection unit includes a base, a detection end, and a conduit. The base is connected to the detection end, and the detection end passes through the first detection hole and the second detection hole in sequence into the first pipe body. The conduit is sleeved on the portion of the detection end located in the fluid space.

[0011] Optionally, the heating mechanism includes a circulating pump, a heating module, a first circulating pipeline and a second circulating pipeline, the second pipeline having an inlet and an outlet, and the inlet, the first circulating pipeline, the heating module, the second circulating pipeline and the outlet being connected in sequence.

[0012] Optionally, the heating mechanism further includes a second temperature detection unit, which is provided at both the inlet and the outlet. The second temperature detection unit is used to detect the temperature of the heat medium in the first circulation pipeline and the second circulation pipeline in real time.

[0013] Optionally, it also includes a thermal insulation structure, which is disposed on the outer peripheral side of the connecting pipe.

[0014] Optionally, the first tube, the connecting rib, and the second tube are integrally formed.

[0015] Optionally, the connecting pipe includes a plurality of connecting ribs, which are spaced apart circumferentially along the first pipe body, and each connecting rib has a plurality of connecting holes spaced apart along the length of the connecting rib.

[0016] Optionally, a placement rack may also be included for placing the connecting pipes.

[0017] To achieve the same purpose, this application also provides a flash spinning device, including a control system, a mixing device, a nozzle assembly, and a connection device as described above. The mixing device has multiple output ends, the nozzle assembly includes multiple spinning nozzles, the multiple output ends and the multiple spinning nozzles correspond one-to-one, and the corresponding spinning nozzles and output ends are connected through the connection pipeline. The control system is electrically connected to the heating mechanism.

[0018] Optionally, it also includes a first pressure detection unit and a second pressure detection unit, wherein the first pressure detection unit is located at the spinning nozzle and the second pressure detection unit is located at the output end, and the first pressure detection unit and the second pressure detection unit are electrically connected to the control system respectively.

[0019] Compared with the prior art, the connecting device and flash spinning equipment of this application have the following advantages: By adopting the above technical solution, multiple output ends of the mixing device and multiple spinning nozzles can be connected separately through the connecting pipes of the connecting device. This arrangement not only facilitates the adjustment and maintenance of the connecting pipes that have problems, but also allows for the adjustment of the extension route of the connecting pipes according to environmental adaptability. Furthermore, this application can maintain the temperature of the spinning liquid in the first tube body through the heat medium in the fluid space, so that the spinning liquid is kept at a high temperature during the process of entering the spinning nozzle from the mixing device. In addition, two adjacent connecting pipes in the same connecting pipe are connected by an adapter. The adapter can not only realize the turning of the connecting pipe, but also separate the fluid space of the two adjacent connecting pipes, avoiding the temperature drop of the local heat medium due to the excessive length of the connecting pipe, which would affect the transportation effect of the spinning liquid. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connecting device.

[0021] Figure 2 This is an axial cross-sectional view of the connecting pipeline.

[0022] Figure 3 This is a radial cross-sectional view of the connecting pipe.

[0023] Figure 4 This is a cross-sectional view of the adapter.

[0024] Figure 5This is a schematic diagram of a flash spinning equipment.

[0025] [Explanation of Labels in the Attached Image]

[0026] 1. Connecting device; 11. Heating mechanism; 111. Circulating pump; 112. Heating module; 113. First circulation pipeline; 114. Second circulation pipeline; 115. Second temperature detection unit; 12. Connecting pipeline; 121. Connecting pipe; 1211. First pipe body; 1212. Connecting rib; 1213. Second pipe body; 1213a. Inlet; 1213b. Outlet; 1214. Fluid space; 1215. First temperature detection unit; 1215a. Base; 1215b. Detector end; 1215c. Conduit; 122. Adapter; 1221. Main body; 1221a. Connecting pipe; 1222. Connecting part; 1222a. Connecting port; 1222b. Snap-fit ​​groove.

[0027] 2. Mixing device; 21. Output terminal;

[0028] 3. Nozzle assembly, 31. Spinning nozzle. Detailed Implementation

[0029] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0030] In the description of this application, it should be understood that the terms "upper", "top", "bottom", "inner", "outer", etc. used in this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] like Figures 1-4As shown, a connecting device 1 according to an embodiment of this application includes: a heating mechanism 11 and a connecting pipe 12. The connecting pipe 12 includes a plurality of connecting pipes 121 and a plurality of adapters 122. Any two adjacent connecting pipes 121 are connected by adapters 122. The connecting pipe 121 includes a first pipe body 1211, a connecting rib 1212, and a second pipe body 1213. The second pipe body 1213 is sleeved on the first pipe body 1211. The first pipe body 1211 is used for flowing spinning solution. The space between the second pipe body 1213 and the first pipe body 1211 is a fluid space 1214, which is used for flowing heat medium. The connecting rib 1212 is disposed in the fluid space 1214 and is used to connect the first pipe body 1211 and the second pipe body 1213. The heating mechanism 11 and the fluid space 1213 are connected by a connecting rib 1212. 214 connection, used to provide heat medium to fluid space 1214, adapter 122 includes main body 1221 and two connecting parts 1222. The two connecting parts 1222 are spaced apart on the outer peripheral sidewall of main body 1221 along the circumference of main body 1221. Main body 1221 has a connecting pipe 1221a. The connecting part 1222 has a connecting port 1222a and a snap-fit ​​groove 1222b extending circumferentially along the connecting port 1222a on the side opposite to main body 1221. Connecting pipe 1221a is connected to connecting port 1222a. One end of first pipe 1211 can be snapped into snap-fit ​​groove 1222b and connected to connecting port 1222a. One end of second pipe 1213 can be sleeved on connecting part 1222 to complete the sealing of fluid space 1214.

[0033] Based on the above scheme, this application can connect multiple output ends 21 of the mixing device 2 to multiple spinning nozzles 31 separately through multiple connecting pipes 12 of the connecting device 1. This arrangement not only allows for convenient adjustment and maintenance of connecting pipes 12 that have problems, but also allows for adjustment of the extension route of connecting pipes 12 according to environmental adaptability. Furthermore, this application can maintain the temperature of the spinning solution in the first tube 1211 through the heat medium in the fluid space 1214, ensuring that the spinning solution remains at a high temperature as it enters the spinning nozzle 31 from the mixing device 2. In addition, two adjacent connecting pipes 121 in the same connecting pipe 12 are connected by a connector 122. The connector 122 can not only enable the turning of the connecting pipe 12, but also separate the fluid space 1214 of the two adjacent connecting pipes 121, preventing the temperature of the local heat medium from dropping due to the excessive length of the connecting pipe 121, which would affect the transportation effect of the spinning solution.

[0034] like Figure 3As shown, in order to detect the temperature of the spinning solution in the first tube 1211 in real time, the connecting pipe 121 also includes a first temperature detection unit 1215. The side wall of the first tube 1211 has a first detection hole (not shown in the figure), and the side wall of the second tube 1213 has a second detection hole (not shown in the figure). The first temperature detection unit 1215 includes a base 1215a, a detection end 1215b, and a conduit 1215c. The base 1215a is connected to the detection end 1215b, and the detection end 1215b passes through the first detection hole and the second detection hole in sequence to the first tube 121. In section 1, the conduit 1215c is fitted onto the portion of the probe end 1215b located in the fluid space 1214. The temperature of the spinning solution in the first tube 1211 is detected through the probe end 1215b, and the conduit 1215c isolates the probe end 1215b from the influence of the heat medium in the fluid space 1214. The substrate 1215a is provided with a temperature sensor that contacts the probe end 1215b, and the probe end 1215b is generally made of thermally conductive metal. In actual production, the first temperature detection unit 1215 can be directly integrated into the connecting pipe 121 without the need for on-site installation.

[0035] like Figure 1 As shown, in order to ensure the temperature stability of the heat medium in the fluid space 1214, the heating mechanism 11 includes a circulation pump 111, a heating module 112, a first circulation pipe 113 and a second circulation pipe 114. The second pipe 1213 has an inlet 1213a and an outlet 1213b. The inlet 1213a, the first circulation pipe 113, the heating module 112, the circulation pump 111, the second circulation pipe 114 and the outlet 1213b are connected in sequence. Under the action of the circulation pump 111, the heat medium in the fluid space 1214 passes through the outlet 1213b and the second circulation pipe in sequence and enters the large heating module 112 for heating. After heating is completed, under the action of the circulation pump 111, it passes through the first circulation pipe 113 and the inlet 1213a and enters the fluid space 1214.

[0036] like Figure 1 As shown, in order to facilitate the adjustment of the output power of the heating module 112, the heating mechanism 11 also includes a second temperature detection unit 115. The first circulation pipe 113 and the second circulation pipe 114 are both provided with a second temperature detection unit. The second temperature detection unit 115 is used to detect the temperature of the heat medium in the first circulation pipe 113 and the second circulation pipe 114 in real time, so as to determine the temperature change of the heat medium in the fluid space 1214.

[0037] Optionally, in order to reduce heat loss, an insulation structure (not shown in the attached figure) is also included, which is located on the outer periphery of the connecting pipe 12.

[0038] In some embodiments, an insulation layer (not shown in the figures) is also provided on the outer periphery of the insulation structure. The insulation structure is made of composite silicate material and covers the outer periphery of the connecting pipe 12, while the insulation layer is made of asbestos material.

[0039] like Figure 3 As shown, for ease of use, the first tube 1211, the connecting rib 1212, and the second tube 1213 are integrally molded parts. In this embodiment, both the first tube 1211 and the second tube 1213 are made of thermally conductive metal material. During production, the first tube 1211, the connecting rib 1212, and the second tube 1213 are integrally cast.

[0040] like Figure 3 As shown, in order to ensure the strength of the connecting pipe 121, the connecting pipe 121 includes a plurality of connecting ribs 1212. The plurality of connecting ribs 1212 are arranged at intervals along the circumference of the first pipe body 1211, and the connecting ribs 1212 have a plurality of connecting holes (not shown in the figure) arranged at intervals along the length direction of the connecting ribs 1212. The connecting holes are used to allow the flow of heat medium in the fluid space 1214.

[0041] like Figure 1 As shown, in order to facilitate use and control the direction of the connecting pipe 12, a placement rack 13 is also included. The placement rack 13 is used to place the connecting pipe 12. The placement rack 13 includes a base plate and a support. The base plate has a hollow structure, and the support is located on one side of the base plate. Multiple connecting pipes 12 are suspended from the support.

[0042] like Figure 5 The flash spinning equipment shown in this application embodiment includes a control system (not shown in the figure), a mixing device 2, a nozzle assembly 3, and a connection device 1 as described above. The mixing device 2 has multiple output ends 21, and the nozzle assembly 3 includes multiple spinning nozzles 31. The multiple output ends 21 and the multiple spinning nozzles 31 correspond one-to-one, and the corresponding spinning nozzles 31 and output ends 21 are connected through connecting pipes 12. The control system is electrically connected to the heating mechanism 11.

[0043] Optionally, in order to monitor the pressure of the spinning solution in real time, a first pressure detection unit (not shown in the figure) and a second pressure detection unit (not shown in the figure) are also included. The first pressure detection unit is located at the spinning nozzle 31, and the second pressure detection unit is located at the output end 21. The first pressure detection unit and the second pressure detection unit are electrically connected to the control system. The pressure of the spinning solution is detected in real time through the first pressure detection unit and the second pressure detection unit. When a problem occurs, the control system can promptly identify the problematic connection pipe 12 and quickly complete the disassembly and replacement of the connection device 1.

[0044] In summary, the embodiments of the present invention provide a connecting device 1 and a flash spinning device, which connect multiple output ends 21 of the mixing device 2 to multiple spinning nozzles 31 separately through the connecting pipe 12 of the connecting device 1. This arrangement not only allows for convenient adjustment and maintenance of the connecting pipe 12 when problems occur, but also allows for adjustment of the extension route of the connecting pipe 12 according to environmental adaptability. Furthermore, the present application can maintain the temperature of the spinning solution in the first tube 1211 through the heat medium in the fluid space 1214, so that the spinning solution is kept at a high temperature during the process of entering the spinning nozzle 31 from the mixing device 2. In addition, two adjacent connecting pipes 121 in the same connecting pipe 12 are connected by an adapter 122. The adapter 122 can not only realize the turning of the connecting pipe 12, but also separate the fluid space 1214 of the two adjacent connecting pipes 121, so as to avoid the local temperature drop of the heat medium due to the excessive length of the connecting pipe 121, which would affect the transportation effect of the spinning solution.

[0045] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0046] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent modifications made based on the content of this application's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this application.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connecting device for a flash spinning apparatus, for supplying spinning solution to a spinning nozzle, characterized in that, Includes: heating system and connecting pipes; The connecting pipeline includes multiple connecting pipes and multiple adapters, and any two adjacent connecting pipes are connected through the adapters; The connecting pipe includes a first pipe body, a connecting rib, and a second pipe body; the second pipe body is sleeved on the first pipe body, the first pipe body is used to flow spinning solution, the space between the second pipe body and the first pipe body is a fluid space, the fluid space is used to flow heat medium, the connecting rib is disposed in the fluid space and connects the first pipe body and the second pipe body, and the heating mechanism is connected to the fluid space to provide the heat medium to the fluid space; The adapter includes a main body and two connecting parts. The two connecting parts are spaced apart on the outer peripheral sidewall of the main body along the circumference of the main body. The main body has a connecting pipe. The connecting parts have a connecting port and a snap-fit ​​groove extending circumferentially along the connecting port on the side opposite to the main body. The connecting pipe is connected to the connecting port. As the connecting pipe is connected to the adapter, one end of the first tube can be snapped into the snap-fit ​​groove and connected to the connecting port. One end of the second tube can be sleeved on the connecting part.

2. The connecting device according to claim 1, characterized in that, The connecting pipe further includes a first temperature detection unit. The side wall of the first pipe has a first detection hole, and the side wall of the second pipe has a second detection hole. The first temperature detection unit includes a base, a detection end, and a conduit. The base is connected to the detection end, and the detection end passes through the first detection hole and the second detection hole in sequence to the first pipe. The conduit is sleeved on the part of the detection end located in the fluid space.

3. The connecting device according to claim 2, characterized in that, The heating mechanism includes a circulating pump, a heating module, a first circulating pipeline and a second circulating pipeline. The second pipeline has an inlet and an outlet, and the inlet, the first circulating pipeline, the heating module, the second circulating pipeline and the outlet are connected in sequence.

4. The connecting device according to claim 3, characterized in that, The heating mechanism further includes a second temperature detection unit. Both the first circulation pipeline and the second circulation pipeline are equipped with the second temperature detection unit. The second temperature detection unit is used to detect the temperature of the heat medium in the first circulation pipeline and the second circulation pipeline in real time.

5. The connecting device according to claim 1, characterized in that, It also includes a thermal insulation structure, which is disposed on the outer peripheral side of the connecting pipe.

6. The connecting device according to claim 1, characterized in that, The first tube, the connecting rib, and the second tube are integrally formed.

7. The connecting device according to claim 1, characterized in that, The connecting pipe includes a plurality of connecting ribs, which are spaced apart circumferentially along the first pipe body, and each connecting rib has a plurality of connecting holes spaced apart along the length of the connecting rib.

8. The connecting device according to claim 1, characterized in that, It also includes a placement rack for placing the connecting pipes.

9. A flash spinning device, characterized in that, The device includes a control system, a mixing device, a nozzle assembly, and a connecting device as described in any one of claims 1-8. The mixing device has multiple output ends, the nozzle assembly includes multiple spinning nozzles, the multiple output ends and the multiple spinning nozzles correspond one-to-one, and the corresponding spinning nozzles and output ends are connected through the connecting pipes. The control system is electrically connected to the heating mechanism.

10. The flash spinning equipment according to claim 9, characterized in that, It also includes a first pressure detection unit and a second pressure detection unit. The first pressure detection unit is located at the spinning nozzle, and the second pressure detection unit is located at the output end. The first pressure detection unit and the second pressure detection unit are electrically connected to the control system, respectively.

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