Flash spinning solution mixing device and flash spinning apparatus

Abstract

The application relates to the technical field of non-woven fabric manufacturing, in particular to a flash spinning solution mixing device and a spinning equipment. The flash spinning solution mixing device comprises a swelling channel, at least two swelling channels are arranged; a shunting module is communicated with the swelling channel and is used for shunting external materials to the swelling channels; and a solvent conveying module is used for conveying solvent to the inside of the swelling channel; wherein the swelling channel is used for outputting the flash spinning solution mixing device after the external materials are swelled in the swelling channel. The flash spinning solution mixing device can make the polymer and the solvent fully swell, and the concentrated solution and the solvent can be fully dissolved in the static mixing device after swelling. The continuity of production is ensured, the production time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of nonwoven fabric manufacturing technology, and in particular to a flash spinning solution mixing device and spinning equipment. Background Technology

[0002] The principle of flash spinning: Flash spinning is a spinning method in which a polymer solution under high temperature and high pressure is released into an environment with normal temperature and pressure through a spinneret. The low-boiling-point solvent rapidly vaporizes and evaporates instantly, while the polymer quickly solidifies from a liquid state and is drawn into fibers by the high-speed solvent gas. This requires that the polymer should not be dissolved by the solvent at normal temperature and pressure, but should be soluble in the solvent under high temperature and pressure; and the solvent should have a low boiling point, capable of vaporizing at lower temperatures and pressures, but remaining liquid under high temperature and pressure.

[0003] The dissolution process of polymers in solvents involves the following steps: Under high temperature conditions, the polymer melts to form a melt. This melt needs to swell fully in a high-temperature, high-pressure solvent liquid. Then, through shear force, the swollen polymer is dispersed into the solvent, forming a highly viscous solution. The rate of swelling depends on the particle size of the polymer melt; larger particles are less likely to swell. Furthermore, homogeneous solutions under high temperature and pressure are prone to repolymerization: that is, when the temperature or pressure changes, or when the external shear force is insufficient, the dissolved polymers agglomerate again, forming a non-homogeneous solution.

[0004] In existing flash spinning technology, the mixing of polymer and solvent is generally carried out using a reaction vessel mixing device. A measured amount of polymer and its matching solvent are added to the reaction vessel, which is then sealed. Inert gas is injected into the reaction vessel to achieve a certain pressure. The reaction vessel is then heated to a specific temperature, and a stirring device installed inside the reaction vessel agitates the mixture to achieve a homogeneous dissolution. However, this type of technology is difficult to sustain for continuous production due to the differences in swelling and dissolution requirements. Summary of the Invention

[0005] To address the shortcomings of existing flash spinning equipment, such as the excessively long dissolution stage between polymer and solvent, which hinders continuous production, this application provides a flash spinning solution mixing device, comprising:

[0006] Swelling channels, at least two of which are provided. A flow distribution module is connected to the swelling channels and is used to distribute incoming materials to each swelling channel. A solvent delivery module is used to deliver solvent into the swelling channels.

[0007] The swelling channel allows external materials to swell within the channel before being output to the flash spinning solution mixing device.

[0008] In one embodiment, the diversion module includes a diversion inlet, a diversion cavity, and diversion channels. The diversion cavity is connected to an external conveying device through the diversion inlet to receive external materials. The diversion channels are arranged around the diversion cavity, and each diversion channel corresponds to a swelling channel.

[0009] In one embodiment, a one-way valve is also included, through which material in the diversion module flows to the swelling channel.

[0010] In one embodiment, a spiral unit is provided inside the swelling channel.

[0011] In one embodiment, the swelling channel is further provided with a solvent inlet, which is located between the spiral unit and the one-way valve, and is connected to the solvent delivery module.

[0012] In one embodiment, the swelling channels are disposed inside the shell, the shell is a pressure-resistant container, and a connecting channel is provided at the end of the shell away from the diversion module, and all the swelling channels are connected to the connecting channel.

[0013] In one embodiment, the swelling channel is disposed inside the housing, which is a pressure-resistant container. The solvent delivery module is disposed on the side of the housing, and the solvent is delivered from the side to the interior of the swelling channel.

[0014] This application also provides a quick-spinning device, including a screw agitator, a metering device, a static mixing device, a quick-spinning solution mixing device, and a spinneret.

[0015] The screw agitator, metering device, quick-spinning solution mixing device, static mixing device, and spinneret are connected in sequence.

[0016] The flash spinning solution mixing device is any of the flash spinning solution mixing devices described above.

[0017] In one embodiment, the screw mixer includes a feed hopper, a discharge port, and a barrel. The feed hopper and discharge port are symmetrically arranged on the barrel. A screw is installed inside the barrel.

[0018] In one embodiment, a pressure sensor is provided at the discharge port.

[0019] Based on the above, the beneficial effects of this application compared with the prior art are as follows:

[0020] 1. The flash spinning solution mixing device used in this application can first divide the large polymer melt agglomerates into multiple small melt agglomerates, thereby geometrically increasing the contact surface between the polymer melt and the solvent. This allows the polymer melt to dissolve quickly into the solvent and swell fully in advance, so that the polymer can fully dissolve in subsequent processes, resulting in a uniform solution composition. This facilitates continuous production and improves product production efficiency and quality.

[0021] 2. The flash spinning equipment provided in this application achieves continuous production in its process flow, greatly improving production efficiency and saving production time. The flash spinning equipment solves the problem of excessive time spent in the polymer-solvent dissolution stage by dividing the dissolution stage into a swelling process and a dissolution process. By setting up a solution mixing device, the polymer can fully swell in the solvent. After swelling, the concentrated solution and solvent then enter a static mixing device, which fully utilizes the static mixing device to ensure complete dissolution of the polymer and solvent. This ensures both continuous production and saves production time, thereby improving production efficiency.

[0022] Other features and beneficial effects of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other beneficial effects of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships in the drawings described below are based on the direction in which the components are drawn in the figures.

[0024] Figure 1 This is a schematic diagram of the structure of a spun solution mixing device in one embodiment of this application.

[0025] Figure 2 This is a perspective view of the splitting module in one embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the overall structure of the flash spinning equipment in one embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the screw stirring device in one embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the flash spinning solution mixing device and the static mixing device in one embodiment of this application.

[0029] Figure 6 This is a process flow diagram of the spun yarn equipment of this application.

[0030] Figure label:

[0031] 100 Flash spinning solution mixing device 11 Diversion module 111 Diversion chamber

[0032] 112 Diversion Channel 113 Diversion Inlet 12 Swelling Channel

[0033] 121 Spiral unit; 122 Solvent inlet; 13 Check valve

[0034] 14 Solvent delivery module; 15 Connection channel; 16 Housing

[0035] 200 screw mixer 21 feed hopper 22 discharge port

[0036] 23 Barrel 231 Screw 24 Pressure Sensor

[0037] 300 Metering device; 31 Metering feed area; 32 Metering discharge area

[0038] 400 Static Mixing Unit 41 Solute Inlet 42 Solvent Inlet

[0039] 500 spinneret Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The technical features designed in the different implementations of this application described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that all terms used in this application (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains, and should not be construed as limiting this application; it should be further understood that the terms used in this application should be understood to have the same meaning as those in the context of this specification and the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this application.

[0042] This application provides a flash spinning solution mixing apparatus 100, comprising:

[0043] Swelling channels 12, at least two of which are provided. A diversion module 11 is connected to the swelling channels 12 and is used to divert external materials to each swelling channel 12. A solvent delivery module 14 is used to deliver solvent from the side into the swelling channels 12.

[0044] The swelling channel 12 penetrates the shell 16, allowing external materials to swell within the swelling channel 12 before being output to the flash spinning solution mixing device 100.

[0045] In specific implementation, such as Figure 1 As shown, the basic structure of the flash spinning solution mixing device 100 includes a swelling channel 12, a diversion module 11, and a solvent delivery module 14.

[0046] In existing flash spinning technology, the overall dissolution process of the flash spinning solution is divided into two stages: swelling and dissolution. Usually, the two are carried out in the same device. However, when they are carried out simultaneously, the particle size of the polymer melt in the swelling stage is too large, which makes the overall dissolution process time-consuming and inefficient.

[0047] Therefore, this application uses the diversion module 11 and the swelling channel 12 to reduce the particle size of the polymer melt during the swelling stage as much as possible without affecting the delivery rate per unit time.

[0048] At least two swelling channels 12 are provided inside the flash spinning solution mixing device 100.

[0049] The diversion module 11 is connected to the swelling channel 12, and the diversion module 11 diverts the external material to each swelling channel 12.

[0050] The solvent delivery module 14 delivers the solvent from the side into the swelling channel 12.

[0051] In actual operation, the incoming polymer melt enters the flash spinning solution mixing device 100 through the splitting module 11. Within the splitting module 11, the polymer melt is split into several small melt agglomerates and enters several swelling channels 12. Simultaneously, the solvent delivery module 14 delivers a preset amount of solvent to the swelling channels 12. Within the swelling channels 12, the small melt agglomerates mix with the solvent. During this stage, solvent molecules penetrate into the polymer molecules, increasing their volume, and the small melt agglomerates begin to swell in the solvent.

[0052] Preferably, the diversion module 11 includes a diversion inlet 113, a diversion cavity 111, and a diversion channel 112. The diversion cavity 111 is connected to an external conveying device through the diversion inlet 113 to receive external materials. The diversion channel 112 is disposed around the diversion cavity 111, and the diversion channel 112 corresponds one-to-one with the swelling channel 12.

[0053] In specific implementation, such as Figure 2As shown, the diversion module 11 includes a diversion inlet 113, a diversion cavity 111, and a diversion channel 112. The diversion cavity 111 is connected to an external conveying device through the diversion inlet 113. Material from the external conveying device enters the diversion cavity 111 through the diversion inlet 113 and then enters the swelling channel 12 through the diversion channel 112. The diversion channel 112 is located around the diversion cavity 111, and the diversion channel 112 must correspond one-to-one with the swelling channel 12. Therefore, the specific position of the diversion channel 112 can be adjusted according to the actual situation.

[0054] Furthermore, the connection between the diversion channel 112 and the swelling channel 12 can be achieved by using a flush flange connection, the diversion channel 112 being nested within the swelling channel 12, or the diversion channel 112 covering the swelling channel 12. Meanwhile, the diversion channel 112 can be made of different specifications such as round or square tubes. Those skilled in the art can select according to the actual situation to ensure the overall sealing performance.

[0055] In one embodiment, a one-way valve 13 is also included, through which material in the diversion module 112 flows to the swelling channel 12. In specific implementation, the one-way valve 13 ensures that external material can only flow from the diversion module 11 to the swelling channel 12, preventing solvent from flowing into the diversion module 11, thus ensuring the accurate ratio of solvent to melt clumps in the swelling channel 12 and ensuring the swelling effect.

[0056] Furthermore, the one-way valve 13 can be located at the end of the diversion channel 112, or at one end of the swelling channel 12 adjacent to the diversion channel 112, or in an installation area between the diversion channel 112 and the swelling channel 12, thus placing the one-way valve 13 between the diversion module 11 and the swelling channel 12. The specific arrangement can be adjusted by those skilled in the art according to the specifications of the diversion channel 112, the swelling channel 12, and the overall specifications of the device to improve the space utilization of the device.

[0057] It should be noted that in other embodiments, the one-way valve 13 may not be provided. Instead, for example, the swelling channel 12 may have a certain inclination angle, so that the solvent, under the action of gravity and the pressure of the preceding channel during the transportation process, can not flow to the diversion module 11, but can only flow towards the outlet of the swelling channel 12.

[0058] In other embodiments, other devices that can perform the corresponding function may be used to replace the one-way valve 13.

[0059] In one embodiment, a spiral unit 121 is provided inside the swelling channel 12.

[0060] In specific implementation, such as Figure 1As shown, a spiral unit 121 is provided inside the swelling channel 12. The spiral unit 121 allows the solvent and melt clumps inside the swelling channel 12 to change positions during flow, thus achieving a stirring effect. Furthermore, the spiral unit 121 can be composed of combinations of spiral elements of different specifications depending on the specific composition of the polymer and solvent, allowing solvent molecules to better penetrate into the interior of the polymer molecules, further improving the swelling efficiency.

[0061] Preferably, the spiral unit 121 is located at the end of the swelling channel 12 away from the separation module to prevent the polymer and solvent from changing positions under the action of the spiral unit 121 before swelling begins, thus ensuring the efficiency of swelling.

[0062] In one embodiment, the swelling channel 12 is further provided with a solvent inlet 122, which is located between the spiral unit 121 and the one-way valve 13, and is connected to the solvent delivery module 14.

[0063] In specific implementation, such as Figure 1 As shown, each swelling channel 12 is equipped with a solvent inlet 122, which is located between the spiral unit 121 and the one-way valve 13. The solvent inlet 122 is connected to the solvent delivery module 14. The solvent delivery module 14 delivers solvent into each swelling channel 12 to ensure the swelling effect.

[0064] Preferably, the swelling channels 12 are disposed inside the housing 16, which is a pressure-resistant container. A connecting channel 15 is provided at the end of the housing 16 away from the diversion module 11, and all the swelling channels 12 are connected to the connecting channel 15.

[0065] In specific implementation, such as Figure 1 As shown, the swelling channels 12 are disposed inside the housing 16, which is a pressure-resistant container providing a basic device framework. Their specific shape is not limited; those skilled in the art can select specific specifications and shapes based on the expected material flow rate to improve space utilization. A connecting channel 15 is provided at the end of the housing 16 furthest from the diversion module 11, and all swelling channels 12 are connected to the connecting channel 15. That is, at the end of the housing 16, the connecting channel 15 serves as a transition to other processes. The connecting channel 15 collects the swollen flash spinning solution from each swelling channel 12, ensuring the uniformity of the flash spinning solution entering subsequent processes and improving the quality of the final product. Specifically, those skilled in the art can set the length and specifications of the connecting channel 15 according to actual conditions.

[0066] Preferably, the swelling channel 12 can penetrate the entire housing 16, that is, the cavity inside the housing 16 is the swelling channel 12. With this design, the flow divider module 11 can be sealed and connected to the housing 16 with a flush flange, making the overall installation of the device simple. At the same time, the one-way valve 13 can be set at the end of the flow divider channel 112 or at one end of the swelling channel 12 adjacent to the flow divider channel 112, which can improve the space utilization rate.

[0067] Preferably, the swelling channel 12 has a reserved empty area at both ends of the housing 16, which can be used as the installation position of the one-way valve 13 or other accessories, or as the working area for the diversion channel 112 to be connected to the swelling channel 12 when it extends into the housing 16. The specific size of the empty area can be adjusted or set by those skilled in the art according to the actual situation, so as to ensure the space utilization of the device while making it expandable and facilitating the installation of subsequent accessories.

[0068] Furthermore, the diversion channel 112 extends into the housing 16 and then connects to the swelling channel 12, effectively preventing material and pressure leakage within the diversion module 11. Specifically, as... Figure 2 As shown, the overall structure of the diversion channel 112 can be L-shaped. Those skilled in the art can adjust the angle and length of the connection between the diversion channel 112 and the diversion cavity 111 according to the actual situation.

[0069] Specifically, the diversion module 11 is connected to the housing 16 by a flange to further ensure the overall sealing performance.

[0070] In one embodiment, such as Figure 1 As shown, the swelling channel 12 is disposed inside the housing 16, which is a pressure-resistant container. The solvent delivery module 14 is disposed on the side of the housing 16, and the solvent is delivered to the inside of the swelling channel 12 from the side.

[0071] Preferably, the solvent delivery module 14 is a combination of a metering pump and a delivery pipeline. Furthermore, the solvent delivery module 14 adjusts the flow rate of the injected solvent according to the flow rate of the material coming from the diversion module 11.

[0072] Preferably, the mass ratio of the polymer received by the diversion module 11 to the solvent delivered by the solvent delivery module 14 is 1 to 2:1.

[0073] This application also provides a quick-spinning device, including a screw agitator 200, a metering device 300, a static mixing device 400, a quick-spinning solution mixing device 100, and a spinneret 500.

[0074] The screw agitator 200, metering device 300, flash spinning solution mixing device 100, static mixing device 400, and spinneret 500 are sequentially and sealed together.

[0075] The screw agitator 200 is used to mix and melt materials into a polymer melt and convey it to the metering device 300. The metering device 300 receives the polymer melt from the screw agitator 200, meters it, and then conveys it to the flash spinning solution mixing device 100. The metered polymer melt swells with solvent in the flash spinning solution mixing device 100 to form a concentrated mixed solution. The concentrated mixed solution is conveyed to the static mixing device 400 and dissolved with solvent to form a spinning solution. The spinneret 500 ejects the spinning solution.

[0076] The flash spinning solution mixing device 100 is any of the flash spinning solution mixing devices 100 described above.

[0077] In specific implementation, such as Figure 3 As shown, the flash spinning equipment as a whole includes a rod stirring device, a metering device 300, a flash spinning solution mixing device 100, a static mixing device 400, and a spinning device 500, which are sequentially sealed and connected.

[0078] The basic structure of the flash spinning solution mixing device 100 includes a housing 16, a swelling channel 12, a flow distribution module 11, a one-way valve 13, and a solvent delivery module 14.

[0079] The shell 16 is a pressure vessel, providing a basic framework for the device. Swelling channels 12 are disposed inside the shell 16, and at least two swelling channels 12 are provided.

[0080] The diversion module 11 is fixed to one end of the housing 16 and is connected to the swelling channel 12. A one-way valve 13 is provided between the diversion module 11 and the swelling channel 12. The solvent delivery module 14 is located on the side of the housing 16 and delivers solvent from the side into the swelling channel 12. The flash spinning solution mixing device 100 is any of the flash spinning solution mixing devices 100 described above.

[0081] Preferably, the screw agitator 200 is used to mix and melt materials into a polymer melt and convey it to the metering device 300. The metering device 300 receives the polymer melt from the screw agitator 200, meters it, and then conveys it to the flash spinning solution mixing device 100. The metered polymer melt swells with solvent in the flash spinning solution mixing device 100 to form a concentrated mixed solution. The concentrated mixed solution is conveyed to the static mixing device 400 and dissolved with solvent to form a spinning solution. The spinning device 500 ejects the spinning solution. Specifically, the screw agitator 200 can be a screw 231 extruder, and the metering device 300 can be a metering pump.

[0082] In actual operation, the screw agitator 200 rapidly heats and melts different types of polymers, mixing them into a polymer melt, which is then conveyed to the metering device 300. The metering device 300 measures the total amount of polymer melt and conveys it to the flash spinning solution mixing device 100. The flash spinning solution mixing device 100 separates large clumps of polymer melt into multiple smaller clumps, and then adds a solvent in a proportion appropriate to the size of each small clump, allowing the small clumps to fully swell with the solvent to form a concentrated solution. This concentrated solution is then conveyed to the static mixing device 400 for further mixing. In the static mixing device 400, the concentrated solution and solvent are further mixed to form a spinning solution suitable for spinning. Finally, the spinning solution is conveyed from the static mixing device 400 to the spinneret 500 for spinning.

[0083] In one embodiment, the screw mixer 200 includes a feed hopper 21, a discharge port 22, and a barrel 23. The feed hopper 21 and the discharge port 22 are symmetrically arranged on the barrel 23. A screw 231 is provided inside the barrel 23.

[0084] In specific implementation, such as Figure 4 As shown, the screw agitator 200 includes a feed hopper 21, a discharge port 22, and a barrel 23 for heating and melting the polymer. Polymer granules enter the barrel 23 through the feed hopper 21. A screw 231 is installed inside the barrel 23. The heated screw 231 provides shear force to melt the polymer granules into a polymer melt, which is then extruded to the discharge port 22. The discharge port 22 is connected to the metering device 300. Specifically, those skilled in the art can set the temperature of each section according to the melting point and melt index of different polymers, as well as the number of sections in the extruder, to ensure the melting effect. Preferably, the residence time of the polymer melt in this section can be changed by controlling the length of the screw 231 to adapt to the melting requirements of different polymers.

[0085] Preferred, such as Figure 4 As shown, a pressure sensor 24 is provided at the discharge port 22. The screw agitator 200 controls the rotation speed of the screw agitator 200 based on the pressure value detected by the pressure sensor 24.

[0086] Preferred, such as Figure 5 As shown, the metering device 300 is equipped with a metering feed area 31 and a metering discharge area 32. The metering feed area 31 is connected to the discharge port 22, and the metering discharge area 32 is connected to the diversion module 11. Specifically, the metering discharge area 32 is sealed to the diversion inlet 113 of the diversion module 11, allowing the metered melt to directly enter the diversion module 11. Preferably, a flange connection can be used to ensure the overall sealing of the equipment. The metering device 300 separates the feed area and the metering area, and also allows for flexible determination of the feed and metering pressures, reducing overall sealing issues.

[0087] Preferably, the metering pump selected by the metering device 300 can be applied to working conditions with high temperature (≥300℃), high pressure (≥30MPa), and high viscosity (≥20,000Pa·s).

[0088] Preferred, such as Figure 5 As shown, the static mixing device 400 provides a dissolution zone for the polymer and is equipped with a solute inlet 41 and a solvent inlet 122. The concentrated mixed solution output from the swelling channel 12 enters the dissolution zone through the solute inlet 41 and is fed into the solvent inlet 122, so that the total amount of polymer and solvent reaches the preset ratio and is rapidly mixed and dissolved in the static mixing device 400.

[0089] Preferably, the static mixing device 400 is a static mixer. The static mixer uses mixing units fixed inside to change the flow state of the fluid in the pipe, so as to achieve good dispersion and thorough mixing between different fluids. Since the concentrated solution has already swollen before entering the static mixer, according to the principle of dissolution, after the fully swollen concentrated solution and solvent enter the static mixer, under the action of the static mixer, the concentrated solution is uniformly dispersed in the solvent, thereby making the macromolecules of the polymer fully dispersed in the solution and forming a stable homogeneous solution.

[0090] Specifically, both the flash spinning solution mixing device 100 and the static mixing device 400 are carried out under pressure in the previous process, eliminating the need for internal power components and improving the stability of the equipment.

[0091] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this application can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.

[0092] Although this document frequently uses terms such as flash spinning solution mixing device, flow divider module, flow divider cavity, flow divider channel, flow divider inlet, and swelling channel, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this application. Interpreting them as any additional limitation would contradict the spirit of this application. The terms "first," "second," etc. (if present) in the description, claims, and accompanying drawings of the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A flash spinning solution mixing device, characterized in that: include Swelling channels, wherein at least two swelling channels are provided; The diversion module, connected to the swelling channels, is used to divert external materials to each of the swelling channels; the external materials are polymer melts. A solvent delivery module is used to deliver solvent into the swelling channel; The swelling channel allows external materials to swell within it before being output to the flash spinning solution mixing device. The diversion module includes a diversion inlet, a diversion cavity, and a diversion channel; The diversion chamber is connected to an external conveying device through the diversion inlet to receive external materials; the diversion channels are arranged around the diversion chamber, and the diversion channels correspond one-to-one with the swelling channels; It also includes a one-way valve, through which the material in the diversion module flows to the swelling channel; The swelling channel is equipped with a spiral unit; The swelling channel is also provided with a solvent inlet, which is located between the spiral unit and the one-way valve, and is connected to the solvent delivery module; The swelling channels are located inside the shell, which is a pressure-resistant container. A connection channel is provided at the end of the shell away from the diversion module, and all the swelling channels are connected to the connection channel.

2. The flash spinning solution mixing apparatus according to claim 1, characterized in that: The solvent delivery module is located on the side of the housing, and the solvent is delivered from the side into the swelling channel.

3. A quick-spinning device, characterized in that: It includes a screw agitator, a metering device, a static mixing device, a quick-spinning solution mixing device, and a spinneret; The screw agitator, the metering device, the quick-spinning solution mixing device, the static mixing device, and the spinneret are connected in sequence; The flash spinning solution mixing device is the flash spinning solution mixing device according to any one of claims 1-2.

4. The flash spinning equipment according to claim 3, characterized in that: The screw mixer includes a feed hopper, a discharge port, and a barrel; the feed hopper and the discharge port are symmetrically arranged on the barrel; a screw is installed inside the barrel.

5. The flash spinning equipment according to claim 4, characterized in that: A pressure sensor is installed at the discharge port.

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