A purge cleaning device

Abstract

The application discloses a blowing cleaning device which comprises a first bearing seat capable of linear displacement, a gas supply assembly, a first blowing assembly capable of rotating along an own axis, a second blowing assembly and an elastic member. The device can realize pulse blowing for a spinneret through the organic combination of various components, can change the blowing angle of a blowing air flow, and can improve the blowing effect. The device is simple to operate, can realize automatic blowing cleaning by making the second bearing seat and the third bearing seat abut and adhere to each other and then starting a gas source, has high blowing efficiency and good blowing effect, and the blown sundries cannot be scattered anywhere. The gas source utilization rate is high, and the blowing height can be adjusted, so that the device is suitable for the blowing cleaning of spinnerets of different specifications.

Description

[0001] This invention is a divisional application of Chinese invention patent application filed on February 5, 2025, with application number 2025101277325 and titled "A Pulse Blow Cleaning Device for Spinnerets". Technical Field

[0002] This invention relates to the field of chemical fiber spinning technology, and more particularly to the cleaning of spinnerets, specifically to a blowing and cleaning device that can be used to blow and clean spinnerets. Background Technology

[0003] Spinnerets are commonly used equipment in fiber spinning processes. Their main function is to transform viscous polymer melts or solutions into fine streams with specific cross-sectional shapes through micropores, which are then solidified by a coagulation medium such as air or a coagulation bath to form filaments. Depending on the type and specifications of the fiber, spinnerets have different specifications, shapes, aperture types, and materials.

[0004] After spinning for a period of time, not only are there residues inside the spinnerets, but meltblown material also adheres to the end faces of the spinnerets. If they are not cleaned in time, the spinning effect will be significantly affected over time. Currently, methods for cleaning spinnerets include airflow purging. For example, a purging cleaning device has a purging nozzle on both the upper and lower sides of the meltblown spinneret. The upper purging nozzle is first activated to blow the spinnerets downwards, and after purging, the lower purging nozzle is activated to blow the spinnerets upwards. This purging cleaning device claims to be able to achieve good two-sided purging, which is beneficial for cleaning the residual material inside the spinnerets.

[0005] However, in reality, firstly, the blowing and cleaning device has blowing nozzles on both the top and bottom sides. The working method of blowing downwards and then upwards can easily lead to the following undesirable phenomena: when blowing downwards, residual materials are easily blown downwards to the blowing nozzles and their surrounding parts, and when blowing upwards, residual materials are easily blown upwards to the blowing nozzles and their surrounding parts. As a result, residual materials can easily accumulate or adhere to the cleaning equipment, and may also cause partial blockage of the blowing nozzles, making it difficult to use stably for a long time. Moreover, it also requires cleaning, and compared to the spinneret, the blowing equipment will be more difficult to clean.

[0006] Secondly, the blowing and cleaning device has significantly different blowing effects when applied to different spinnerets. The blowing effect on some spinnerets is poor, requiring secondary cleaning processing in conjunction with other cleaning methods or other blowing equipment, which is time-consuming and labor-intensive.

[0007] Third, the blowing and cleaning device needs to have blowing nozzles installed on both the upper and lower sides to ensure the blowing effect, and clamping mechanisms on the left and right sides also need to be installed in the middle, making the equipment structure more complex.

[0008] Fourth, the purging equipment of the purging cleaning device must be open; otherwise, the material blown upward and downward will be difficult to discharge in time. On the one hand, this will cause the purging environment to be dirty and messy. On the other hand, the airflow will easily disperse in all directions after it is ejected, resulting in a waste of energy. In other words, the utilization rate of the airflow is relatively low, requiring a large amount of air source and a long purging time.

[0009] It is evident that existing cleaning equipment for spinnerets still has many shortcomings. Summary of the Invention

[0010] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide an improved pulse-type blowing and cleaning device that has the advantages of good blowing effect, easy operation of the blowing process, and high utilization rate of blowing air source, which can be used to blow and clean spinnerets.

[0011] Furthermore, the purging and cleaning device of the present invention can also adapt to spinnerets of different specifications. Spinnerets vary in thickness, with some being thicker and others thinner. The present invention can adjust the purging distance for different spinnerets while simultaneously purging the spinnerets in all directions, thereby improving the purging cleanliness and adapting to different spinneret application scenarios.

[0012] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0013] A pulse blowing cleaning device for spinnerets, the blowing cleaning device comprising a first support capable of linear displacement, an air supply component at least partially disposed on the first support, a first blowing component capable of rotating along its own axis, a second blowing component, and an elastic element;

[0014] The gas supply assembly includes a first gas supply channel and a second gas supply channel;

[0015] The first purging assembly includes a purging nozzle and an air guide channel. The purging nozzle includes a nozzle body with an internal cavity and an airflow passage that communicates with the cavity and is formed at the bottom of the nozzle body. The airflow passage extends from the center of the bottom of the nozzle body to the edge. One end of the air guide channel is rotatably connected to and communicates with the first air supply channel, and the other end is connected to the nozzle body and communicates with the cavity.

[0016] The second purging assembly includes a second support base having a first airflow channel and a third support base having a second airflow channel and capable of supporting a spinneret. A blow nozzle is formed at the outlet of the second airflow channel.

[0017] One end of the elastic element is connected to the first support seat, and the other end of the elastic element is connected to the second support seat;

[0018] The blowing and cleaning device includes a first state and a second state. When the blowing and cleaning device is in the first state, the second support seat is pressed on the third support seat, and the second air supply channel, the first airflow channel and the second airflow channel are connected in sequence, and the elastic element is in a compressed state. When the blowing and cleaning device is in the second state, the elastic element is in an extended state.

[0019] According to some preferred aspects of the present invention, the second support is an annular support having a first hollow structure, the purge nozzle is at least partially located in the first hollow structure and is capable of linear displacement within the first hollow structure, and there is a gap between the purge nozzle and the inner wall of the first hollow structure.

[0020] Furthermore, when the purging and cleaning device is in the first state, the bottom of the purging nozzle is located inside the first hollow structure.

[0021] In some preferred embodiments of the present invention, the extension direction of the first hollow structure, the extension direction of the elastic element, and the linear displacement direction of the first bearing seat are parallel to each other.

[0022] In some preferred embodiments of the present invention, the first support has an air guide channel clearance hole, the air guide channel passes through the air guide channel clearance hole and is connected to the nozzle body, and the purging nozzle is located below the first support.

[0023] In some preferred embodiments of the present invention, the opening area of ​​the airflow passage is 0.01%-5% of the area of ​​the bottom of the nozzle body.

[0024] According to some preferred aspects of the present invention, the third support is a support having a second hollow structure that allows the spinneret to move freely in and out, and the third support is provided with a spinneret support platform located beside the second hollow structure, and the blow nozzle of the second airflow channel faces the second hollow structure.

[0025] In some preferred embodiments of the present invention, the second purging assembly further includes a sealing gasket disposed between the second support and the third support.

[0026] According to certain aspects of the invention, the elastic element is a compression spring.

[0027] In some preferred embodiments of the present invention, the purging and cleaning device further includes a purging height adjustment mechanism, which includes a first driving component for driving the first support seat to undergo linear displacement.

[0028] Furthermore, the purging height adjustment mechanism also includes a ranging component and a positioning component;

[0029] The ranging component includes a ranging component disposed on the first support, a first ranging clearance hole formed on the first support, and a second ranging clearance hole formed on the nozzle body. The ranging component, the first ranging clearance hole, and the second ranging clearance hole are arranged sequentially from top to bottom, and the ranging component is positioned directly opposite the first ranging clearance hole.

[0030] The positioning component includes a transmitter, a receiver disposed opposite to the transmitter, and a blocking part that is directly or indirectly connected to the air guide channel and moves synchronously with the air guide channel.

[0031] When the blocking part is located between the transmitting end and the receiving end, the center line of the first ranging clearance hole coincides with the center line of the second ranging clearance hole.

[0032] In some preferred embodiments of the present invention, the purging and cleaning device further includes a second driving component for driving the first purging component to rotate along its own axis. The second driving component includes a transmission member sleeved on the air guide channel, a synchronous belt with one end sleeved on the transmission member, and a driving component whose output end is pulsatorically connected to the other end of the synchronous belt. The driving component is disposed on the first support.

[0033] In some preferred embodiments of the present invention, the air guide channel includes a rotary joint and an air guide pipe connected to the lower part of the rotary joint. The lower end of the air guide pipe is threadedly connected to the nozzle body. The upper part of the rotary joint is rotatably connected to and communicates with the first air supply channel.

[0034] In some preferred embodiments of the present invention, one end of the elastic element is connected to the outer peripheral side of the first support seat, and the other end of the elastic element is connected to the upper end of the second support seat. The elastic element has a plurality of evenly distributed elastic elements surrounding the first purging assembly.

[0035] In some preferred embodiments of the present invention, the second support seat is further provided with an airflow connector, and the first airflow channel is connected to the second air supply channel through the airflow connector.

[0036] In some preferred embodiments of the present invention, the purging and cleaning device further includes protective covers respectively covering a portion of the air supply assembly and a portion of the first purging assembly, the lower end of the protective cover being disposed on the first support.

[0037] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0038] Based on the shortcomings of current methods for cleaning spinnerets, such as poor cleaning effect, poor stability, complex operation, and low air source utilization, this invention innovatively provides an improved cleaning device. This device, through the organic combination of a first support base, a second support base, a third support base, a first cleaning component, a second cleaning component, and an elastic element, achieves pulsed cleaning of the spinneret. During cleaning, the airflow extends radially and then rotates around the center to achieve overall pulsed cleaning. The intermittent airflow creates an unstable flow state within the spinneret orifices, generating strong disturbances. These disturbances continuously change the airflow environment around impurities, increasing the contact area and frequency between impurities and airflow. Furthermore, during the cleaning interval, the pressure within the spinneret orifices decreases. When cleaning resumes, a high-speed airflow rushes in instantly, generating a large impact force, which can more effectively break down and peel off impurities and materials adhering to the surface, thereby improving the cleaning effect.

[0039] Secondly, the airflow passage of the present invention extends from the middle of the bottom of the nozzle body to the edge, that is, it is roughly in the shape of a long strip opening. This can not only achieve the purging of more areas per unit time, but also increase the flow rate and pressure of the airflow when it is blown out, thereby increasing the purging force. Furthermore, the rotating output gas, due to the high-speed rush and the effect of inertial force, has a large frequency of airflow entering the spinneret hole at an inclined manner. The tangential entry method perfectly matches the setting of the spinneret hole on the spinneret plate, which is beneficial for removing debris and other materials adhering to the inner wall of the spinneret hole.

[0040] Third, the presence of the elastic element serves two purposes. First, it allows the separately positioned second and third support seats to fit tightly together during contact, ensuring airflow without leakage. This enables the spinneret to be cleaned from the side and / or bottom, increasing the cleaning effect. Second, during pulsed purging, the airflow passes through areas without spinneret holes. At this point, the high-speed airflow directly acts on the surface of the spinneret. Since the third support seat is typically placed on a platform, the spinneret is unlikely to shift. Under the reverse force, the airflow is directly transmitted to the first support seat. The first support seat, under external force, presses down on the second support seat and makes it fit against the third support seat. The presence of the elastic element provides a buffering effect, causing the first support seat to vibrate slightly. This fluctuating vibration causes the height of the subsequent airflow to change slightly and periodically, resulting in significant airflow disturbance, which helps to dislodge debris.

[0041] Fourth, the present invention is simple to operate. By using external force to connect and fit the second and third bearing seats, and then starting the air source, automatic blowing and cleaning can be achieved. The blowing efficiency is high, the blowing and cleaning effect is good, and the blown debris will not be scattered everywhere. The air source utilization rate is high. At the same time, the blowing height can be adjusted, which is suitable for blowing and cleaning different specifications of spinnerets. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is one of the structural schematic diagrams of the pulse blowing cleaning device for spinnerets in an embodiment of the present invention;

[0044] Figure 2 This is a side view schematic diagram of the pulse blowing cleaning device for spinnerets in an embodiment of the present invention;

[0045] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0046] Figure 4 This is a second schematic diagram of the structure of the pulse blowing cleaning device for the spinneret in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of the pulse blowing cleaning device for the spinneret in an embodiment of the present invention (in the first state);

[0048] Figure 6 for Figure 5 A schematic diagram of the structure after the second and third bearing seats are separated;

[0049] Figure 7 This is a schematic diagram of the airflow passage purging spinneret in an embodiment of the present invention;

[0050] Figure 8 This is a schematic diagram of debris inside the spinneret orifice of the spinneret in an embodiment of the present invention;

[0051] Figure 9 This is the third schematic diagram of the structure of the pulse blowing cleaning device for the spinneret in the embodiments of the present invention;

[0052] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0053] Figure 11This is the fourth schematic diagram of the structure of the pulse blowing cleaning device for the spinneret in the embodiments of the present invention;

[0054] Figure 12 This is one of the structural schematic diagrams of the spinneret pulse blowing cleaning device in an embodiment of the present invention, with some components hidden;

[0055] Figure 13 This is the second schematic diagram of the structure of the spinneret pulse blowing cleaning device in an embodiment of the present invention, with some components hidden.

[0056] Figure 14 This is a schematic diagram of the purge nozzle in an embodiment of the present invention;

[0057] In the attached drawings, the following are the reference numerals: 1. First support; 2. Air supply assembly; 21. First air supply channel; 22. Second air supply channel; 23. First air inlet; 24. Second air inlet; 25. Air supply base; 31. Purge nozzle; 311. Nozzle body; 3111. Cavity; 3112. Airflow orifice; 312. Grooved machining opening; 32. Air guide channel; 321. Rotary joint; 322. Air guide pipe; 41. Second support; 411. First airflow channel; 412. First hollow structure; 413. Airflow connector; 42. Third... 421. Support base; 421. Second airflow channel; 4211. Nozzle; 422. Second hollow structure; 423. Spinneret support platform; 43. Sealing gasket; 5. Elastic element; 6. First drive assembly; 71. Distance measuring component; 72. First distance measuring clearance hole; 73. Second distance measuring clearance hole; 81. Transmitter; 82. Receiver; 83. Blocking part; 91. Transmission component; 92. Synchronous belt; 93. Drive component; 10. Protective cover; 101. Guide limiting through hole; 100. Spinneret; 110. Upper surface of spinneret; 200. Miscellaneous matter. Detailed Implementation

[0058] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0059] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0062] like Figures 1 to 14 As shown, this example provides a pulse blowing cleaning device for spinnerets and a schematic blowing process of the device.

[0063] The purging and cleaning device includes a first support 1 capable of linear displacement, an air supply assembly 2 at least partially disposed on the first support 1, a first purging assembly capable of rotation along its own axis, a second purging assembly, and an elastic element 5; the air supply assembly 2 includes a first air supply channel 21 and a second air supply channel 22; the first purging assembly includes a purging nozzle 31 and an air guide channel 32, the purging nozzle 31 includes a nozzle body 311 with an internal cavity 3111, and an airflow passage 3112 communicating with the cavity 3111 and formed at the bottom of the nozzle body 311, the airflow passage 3112 extending from the center of the bottom of the nozzle body 311 towards the edge (for example, it can extend from the center of the bottom towards the edge, but not through at the edge); one end of the air guide channel 32 is rotatably connected to the first air supply channel 21 and The first and second ends of the first and third supports are connected to each other, and the second end is connected to the nozzle body 311 and the cavity 3111. The second blowing assembly includes a second support 41 with a first airflow channel 411 and a third support 42 with a second airflow channel 421 and capable of supporting the spinneret. A blow nozzle 4211 is formed at the outlet of the second airflow channel 421. One end of the elastic member 5 is connected to the first support 1, and the other end of the elastic member 5 is connected to the second support 41. The blowing and cleaning device includes a first state and a second state. When the blowing and cleaning device is in the first state, the second support 41 is pressed on the third support 42, and the second air supply channel 22, the first airflow channel 411 and the second airflow channel 421 are connected in sequence. The elastic member 5 is in a compressed state. When the blowing and cleaning device is in the second state, the elastic member 5 is in an extended state.

[0064] In this example, the first support 1 has an air guide channel clearance hole (not shown), the air guide channel 32 passes through the air guide channel clearance hole and is connected to the nozzle body 311, and the purging nozzle 31 is located below the first support 1. This way, the rotation of the purging nozzle is not interfered with, and better support can be achieved.

[0065] The opening area of ​​the airflow passage 3112 accounts for 0.01%-5% of the area of ​​the bottom of the nozzle body 311, for example, including but not limited to 0.02%, 0.05%, 0.06%, 0.08%, 0.09%, 0.1%, 0.2%, 0.5%, 0.8%, 1%, 1.1%, 1.2%, 1.5%, 2%, 2.5%, 3%, 4%, etc., which can achieve good purging while efficiently utilizing the airflow.

[0066] In this example, the second support 41 is an annular support with a first hollow structure 412. The purge nozzle 31 is at least partially located within the first hollow structure 412 and can undergo linear displacement within it. There is a gap between the purge nozzle 31 and the inner wall of the first hollow structure 412, which facilitates the rotation of the purge nozzle 31. The extension direction of the first hollow structure 412, the extension direction of the elastic element 5, and the linear displacement direction of the first support 1 are parallel to each other, which is beneficial for achieving pulse-type purge cleaning and improving the purge cleaning effect. Furthermore, when the purge cleaning device is in the first state, the bottom of the purge nozzle 31 is located within the first hollow structure 412, which helps to prevent the blown airflow from escaping outward and improves the air source utilization rate. In addition, the second support 41 is also provided with an airflow connector 413, and the first airflow channel 411 is connected to the second air supply channel 22 through the airflow connector 413.

[0067] The third support 42 is a support with a second hollow structure 422 that allows the spinneret to move freely in and out. The third support 42 is provided with a spinneret support platform 423 located on the side of the second hollow structure 422. The blow nozzle 4211 of the second airflow channel 421 faces the second hollow structure 422, which is conducive to blowing and cleaning the side and / or bottom of the spinneret.

[0068] The second purging assembly also includes a sealing gasket 43, which is disposed between the second support 41 and the third support 42 to help maintain airtightness when the two are in contact and prevent gas leakage.

[0069] One end of the elastic element 5 is connected to the outer periphery of the first bearing seat 1, and the other end of the elastic element 5 is connected to the upper end of the second bearing seat 41. The elastic element 5 has multiple evenly distributed elements surrounding the first purging assembly, which is beneficial to the stability of the structure and realizes the vibration-type motion purging. Furthermore, the elastic element 5 is a compression spring, and there is a certain gap between the coils of the compression spring. When subjected to external load, the spring contracts and deforms, storing deformation energy.

[0070] The purging and cleaning device also includes a purging height adjustment mechanism, which includes a first driving component 6 for driving the first support 1 to make linear displacement, a ranging component, and a positioning component. The ranging component includes a ranging part 71 disposed on the first support 1, a first ranging clearance hole 72 formed on the first support 1, and a second ranging clearance hole 73 formed on the nozzle body 311. The ranging part 71, the first ranging clearance hole 72, and the second ranging clearance hole 73 are arranged sequentially from top to bottom, with the ranging part 71 and the first ranging clearance hole 72 facing each other. The component includes a transmitter 81, a receiver 82 (e.g., the receiver and transmitter of a photoelectric sensor) disposed opposite to the transmitter 81, and a blocking part 83 that is directly or indirectly connected to the air guide channel 32 and moves synchronously with the air guide channel 32. When the blocking part 83 is located between the transmitter 81 and the receiver 82, the center line of the first ranging clearance hole 72 coincides with the center line of the second ranging clearance hole 73, thereby allowing the ranging signal of the ranging component 71, such as a laser signal, to pass through these clearance holes and irradiate the spinneret, thereby enabling ranging, such as laser ranging.

[0071] In this example, the purging and cleaning device also includes a second drive assembly for driving the first purging assembly to rotate along its own axis. The second drive assembly includes a transmission component 91 sleeved on the air guide channel 32, a synchronous belt 92 with one end sleeved on the transmission component 91, and a drive component 93 whose output end is connected to the other end of the synchronous belt 92. The drive component 93 is disposed on the first support 1.

[0072] The air guide channel 32 includes a rotary joint 321 and an air guide pipe 322 connected to the lower part of the rotary joint 321. The lower end of the air guide pipe 322 is threadedly connected to the nozzle body 311. The upper part of the rotary joint 321 is rotatably connected to and communicates with the first air supply channel 21.

[0073] In this example, the purging and cleaning device also includes a protective cover 10 that covers part of the air supply component and part of the first purging component. The lower end of the protective cover 10 is set on the first support 1. At the same time, a guide and limiting through hole 101 can be provided on the outer wall of the protective cover 10. The second air supply channel 22 and the airflow connector 413 can be connected by a hose or other types of pipe. The guide and limiting through hole 101 can be used to limit and guide the hose or other types of pipe to avoid messy arrangement. At the same time, the protective cover can also protect some components to prevent debris from entering or being damaged by collisions with other objects.

[0074] See Figures 1 to 4 As shown, the air supply assembly includes a first air supply channel 21, a second air supply channel 22, a first air inlet 23, a second air inlet 24, and an air supply base 25. The first air supply channel 21, the second air supply channel 22, the first air inlet 23, and the second air inlet 24 are respectively connected to the air supply base 25. The air supply base 25 has an inner cavity, and the first air inlet 23 and the second air inlet 24 are respectively connected to the inner cavity. One of the first air inlet 23 and the second air inlet 24 is used to introduce high-temperature compressed gas, and the other is used to introduce room-temperature compressed air. The air supply base 25 is used to distribute the introduced gas to the first air supply channel 21 and the second air supply channel 22. The airflow from the first air supply channel 21 is used to supply the purging nozzle 31, and the airflow from the second air supply channel 22 is used to supply the airflow connector 413. In actual operation, there can be multiple second air supply channels 22, and there can be a one-to-one number of airflow connectors 413. Of course, there can also be multiple guide limiting through holes 101 and purging nozzles, so as to achieve purging and cleaning in more directions and positions. In addition, the second air supply channel 22, the first air inlet 23, the second air inlet 24, and the air supply seat 25 are all located above the protective cover 10, which facilitates the connection of pipelines and other operations.

[0075] Furthermore, the first drive assembly 6 may include a drive component (such as a cylinder or other power component). The output end of the drive component may be directly or indirectly connected to the first support 1, thereby driving the first support 1 to perform an upward or downward linear displacement operation. The drive component and its connection with the first support 1 are conventional methods and will not be described in detail here.

[0076] In this example, the first air supply channel 21 is connected to the rotary joint 321 (which can be purchased commercially and whose main function is to achieve connection and relative rotation). The rotary joint 321 is detachably connected to the air guide pipe 322. The air guide pipe 322 can be connected to the nozzle body 311 by a threaded connection. For example, an external thread can be provided on the outer wall of the air guide pipe 322 and an internal thread can be provided on the nozzle body 311, so that the two can be quickly connected. At the same time, a transmission component 91 is also provided on the outer periphery of the air guide pipe 322, which is driven by a synchronous belt 92. The rotation of the transmission component 91 drives the air guide pipe 322 to rotate, which in turn drives the nozzle body 311 to rotate synchronously. The synchronous belt 92 can be moved by the drive component 93, which may include a drive source (motor, etc.) and a synchronous pulley connected to the drive source. One end of the synchronous belt 92 is sleeved on the transmission component 91, and the other end is sleeved on the synchronous pulley. When the drive source drives the synchronous pulley to rotate, it can correspondingly drive the synchronous belt 92 to rotate, thereby driving the transmission component 91 to rotate, so that the nozzle body 311 rotates along its own axis, thus realizing the pulse purging method. Furthermore, due to the presence of the rotary joint 321, when the air guide channel 32 and the purging nozzle 31 rotate synchronously, the first air supply channel 21 will not rotate unexpectedly, ensuring the stability of the device operation. In addition, by setting, for example, a bearing or other component, it can be sleeved on the air guide pipe 322, and then the bearing can be fixed on the support plate. The support plate can be fixed on the first bearing seat 1, which helps to achieve the support stability of the air supply component 2.

[0077] See Figures 5 to 8 , Figure 5 The second bearing seat 41 and the third bearing seat 42 are tightly fitted together. Figure 6The second support 41 and the third support 42 are separated. The arrow in the figure indicates the direction of compressed air flow. It can be seen that the compressed air in the air guide pipe 322 is introduced into the nozzle body 311, and the bottom of the nozzle body 311 is directly opposite the upper surface of the spinneret 100. When the compressed air is sprayed out, it can both blow away the upper surface of the spinneret 100 and allow the airflow to enter the spinneret holes of the spinneret 100 to clean and blow away debris and other materials. The airflow on both sides is introduced into the first airflow channel 411 through the airflow connector 413, and then into the second airflow channel 421 connected to it, and finally sprayed out from the nozzle 4211. The nozzle 4211 is close to and opposite to the first airflow channel 411. The airflow moves along the sides and bottom of the spinneret, which helps to clean away debris and materials from these areas. Specifically, when the first support 1 moves downwards, it causes the second support 41 to move downwards as well. When the second support 41 presses against the third support 42 and they are in close contact, the presence of the elastic element allows for a tighter fit between them. Furthermore, the compression of the elastic element causes a slight vibration due to the reverse impact of the airflow, altering the impact force and direction of the airflow, increasing the interaction force between the airflows, and enhancing the turbulence, thus improving the cleaning and purging effect. In addition, the rotation of the airflow passage 3112, combined with the high-speed exit of the airflow and the effect of inertia, changes the direction of the airflow entering the spinneret orifice. This not only increases the turbulence of the airflow but also allows for the purging of debris in a more favorable direction, further facilitating the removal of debris 200 from the upper surface 110 of the spinneret and within the spinneret orifice.

[0078] Furthermore, in this example, before purging begins, the distance between the nozzle body 311 and the spinneret can be controlled by combining the first drive assembly 6, the ranging assembly, and the positioning assembly. This allows for control of the purging height to accommodate the optimal purging distance for spinnerets of different specifications, such as different thicknesses. When the air guide channel 32 rotates, the blocking part 83 mounted on it also rotates. In this example, when the blocking part 83 is located between the transmitting end 81 and the receiving end 82, the center line of the first ranging clearance hole 72 coincides with the center line of the second ranging clearance hole 73. Thus, the ranging component 71, for example, can be a laser ranging sensor, whose emitted signal, such as a laser, can penetrate multiple components, i.e., intermediate barriers. Some components enable the laser to irradiate the spinneret, thereby achieving distance measurement. The distance between the distance measuring component 71 and the nozzle body 311 is fixed. Therefore, when the distance between the distance measuring component 71 and the spinneret is known, the distance between the nozzle body 311 and the spinneret can be obtained. At this time, the first drive component 6 can be controlled according to the actual data obtained, so that it drives the first support seat 1 to make an upward or downward linear displacement, thereby achieving control of the distance between the nozzle body 311 and the spinneret, that is, the blowing height can be controlled to achieve the best blowing effect. Preferably, a control system can be set up so that the control system is communicatively connected to the aforementioned electric components, thereby achieving automatic control through the control system.

[0079] See Figures 12 to 14 As shown, the purge nozzle 31 in this example can rotate within the hollow structure of the second support 41 while also undergoing linear displacement, without any unintended obstruction. The first airflow channel 411 has multiple channels, allowing purge gas, such as compressed air, to be introduced into the multiple second airflow channels at different positions and directions, achieving multi-angle and multi-position cleaning and purging. The purge nozzle in this example is equipped with multiple second ranging clearance holes 73, preferably two symmetrically positioned, avoiding the area where the airflow passage 3112 is located. This helps ensure the overall weight balance on both sides and improves stability during rotation. The cavity 3111 is roughly elongated and, since it is located inside the nozzle body 311, can be created by chiseling through the slotted processing port 312. After creation, the slotted processing port 312 can be sealed to prevent gas leakage. Simultaneously, the upper surface of the nozzle body 311 has an opening for connection with the air guide pipe, facilitating the delivery of compressed air into the cavity 3111, which is then ejected outwards from the airflow passage 3112.

[0080] In summary, based on the shortcomings of current methods for cleaning spinnerets, such as poor cleaning effect, instability, complex operation, and low air source utilization, this invention innovatively provides an improved cleaning device. This device, through the organic combination of a first support, a second support, a third support, a first cleaning component, a second cleaning component, and an elastic element, firstly achieves pulsed cleaning of the spinneret, extending radially during cleaning and then rotating around the center to achieve overall pulsed cleaning. The intermittent airflow creates an unstable flow state within the spinneret orifices, generating strong disturbances. These disturbances continuously change the airflow environment around impurities, increasing the interaction between impurities and airflow. The contact area and frequency are optimized, and during the purging interval, the pressure inside the spinneret orifice drops. When purging resumes, a high-speed airflow rushes in instantly, generating a significant impact force. This effectively breaks down and peels away impurities and dust adhering to the surface, thus improving the purging effect. In particular, the airflow orifice of this invention extends from the center of the bottom of the nozzle body towards the edge, forming a roughly elongated opening shape. This allows for purging of a larger area per unit time, increases the flow rate and pressure of the airflow, and enhances the purging force. Furthermore, the rotary output gas, due to the high-speed impact and inertial force, enters the spinneret orifice at a high frequency and at an angle, tangentially. This design perfectly matches the arrangement of the spinneret holes on the spinneret, facilitating the removal of debris and other materials adhering to the inner wall of the spinneret holes. Secondly, the presence of the elastic element allows the separately arranged second and third support seats to fit tightly together during contact, ensuring airflow without leakage. This enables purging and cleaning of the spinneret from the side and / or bottom, increasing the purging effect. Furthermore, during pulse purging, the airflow passes through areas without spinneret holes. In these areas, the high-speed airflow directly acts on the surface of the spinneret. Since the third support seat is typically placed on a platform, the spinneret is unlikely to shift. Therefore, the reverse force is directly transmitted to the first support seat, which... Under external force, the second and third bearing seats will be pressed together. At this time, the presence of the elastic element has a certain buffering effect, causing the first bearing seat to vibrate slightly under the action of the elastic element. This vibrating motion, which fluctuates up and down, causes the height of the subsequent airflow to change slightly and periodically, thus causing significant disturbance in the airflow, which is conducive to the removal of debris. Furthermore, the present invention is simple to operate. By using external force to make the second and third bearing seats fit together, and then starting the air source, automatic blowing and cleaning can be achieved. The blowing efficiency is high, the blowing effect is good, and the blown debris will not be scattered everywhere. The air source utilization rate is high, and the blowing height can also be adjusted, making it suitable for blowing and cleaning spinnerets of different specifications.

[0081] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0082] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A blowing and cleaning device, which can be used to blow and clean a spinneret, characterized in that, The blowing and cleaning device includes a first support seat capable of linear displacement, an air supply component having a first air supply channel and a second air supply channel, a first blowing component capable of rotating along its own axis and supported on the first support seat, a second blowing component, and an elastic element. The first purging assembly includes a purging nozzle and an air guide channel. The purging nozzle includes a nozzle body with an internal cavity and an airflow passage that communicates with the cavity and is formed at the bottom of the nozzle body. The airflow passage extends from the center of the bottom of the nozzle body to the edge. One end of the air guide channel is rotatably connected to and communicates with the first air supply channel, and the other end is connected to the nozzle body and communicates with the cavity. The second blowing assembly includes a second support seat having a first airflow channel and a third support seat having a second airflow channel and capable of supporting a spinneret. A blow nozzle is formed at the outlet of the second airflow channel. One end of the elastic member is connected to the first support seat, and the other end of the elastic member is connected to the second support seat. The second support is an annular support with a first hollow structure. The purge nozzle is at least partially located in the first hollow structure and is capable of linear displacement within the first hollow structure. There is a gap between the purge nozzle and the inner wall of the first hollow structure. The third support is a support with a second hollow structure that allows the spinneret to move freely in and out. The nozzle of the second airflow channel faces the second hollow structure. One end of the elastic element is connected to the outer periphery of the first support seat, and the other end of the elastic element is connected to the upper end of the second support seat. The elastic element has a plurality of evenly distributed elastic elements that surround the first purging assembly. The blowing and cleaning device includes a first state and a second state. When the blowing and cleaning device is in the first state, the second support seat is pressed on the third support seat and they are in close contact with each other. The second air supply channel, the first airflow channel and the second airflow channel are connected in sequence, and the elastic element is in a compressed state. When the blowing and cleaning device is in the second state, the elastic element is in an extended state.

2. The purging and cleaning device according to claim 1, characterized in that, The blow nozzle is close to and facing the side and / or bottom of the spinneret; and / or, when the blow cleaning device is in the second state, the second support is separated from the third support; and / or, the blow nozzle is located below the first support.

3. The purging and cleaning device according to claim 1, characterized in that, The first airflow channel and the second airflow channel each have the same number of channels and correspond one-to-one. The multiple first airflow channels can introduce purge gas into the multiple second airflow channels at different positions and directions; and / or, the cavity is elongated.

4. The purging and cleaning device according to claim 1, characterized in that, The second support is also provided with an airflow connector, and the first airflow channel is connected to the second air supply channel through the airflow connector.

5. The purging and cleaning device according to claim 4, characterized in that, The purging and cleaning device also includes protective covers that cover a portion of the air supply assembly and a portion of the first purging assembly, with the lower end of the protective cover disposed on the first support.

6. The purging and cleaning device according to claim 5, characterized in that, The outer wall of the protective cover is provided with a guide and limiting through hole. The second air supply channel is connected to the airflow connector through a pipe. The guide and limiting through hole is used to limit and guide the pipe.

7. The purging and cleaning device according to claim 1, characterized in that, The air supply assembly further includes a first air inlet, a second air inlet, and an air supply base. The first air supply channel, the second air supply channel, the first air inlet, and the second air inlet are respectively connected to the air supply base.

8. The purging and cleaning device according to claim 7, characterized in that, The gas supply seat has an inner cavity, and the first gas supply channel, the second gas supply channel, the first air inlet, and the second air inlet are respectively connected to the inner cavity; and / or, one of the first air inlet and the second air inlet is used to introduce high-temperature compressed gas, and the other is used to introduce room-temperature compressed air, and the gas supply seat is used to distribute the introduced gas to the first gas supply channel and the second gas supply channel.

9. The purging and cleaning device according to claim 1, characterized in that, The airflow passage extends from the center of the bottom of the nozzle body to the edge, and is not continuous at the edge; and / or, the opening area of ​​the airflow passage accounts for 0.01%-5% of the area of ​​the bottom of the nozzle body.

10. The purging and cleaning device according to claim 1, characterized in that, The opening area of ​​the airflow passage is 0.02%-4.0% of the bottom area of ​​the nozzle body.

11. The purging and cleaning device according to claim 1, characterized in that, The extension direction of the first hollow structure, the extension direction of the elastic element, and the linear displacement direction of the first support are parallel to each other; when the blowing and cleaning device is in the first state, the bottom of the blowing nozzle is located inside the first hollow structure. And / or, The third support is provided with a spinneret support platform located next to the second hollow structure.

12. The purging and cleaning device according to claim 1, characterized in that, The air guide channel includes a rotary joint and an air guide pipe connected to the lower part of the rotary joint. The lower end of the air guide pipe is threadedly connected to the nozzle body. The upper part of the rotary joint is rotatably connected to and communicates with the first air supply channel.

13. The purging and cleaning device according to claim 12, characterized in that, The rotary joint is detachably connected to the air duct.

14. The purging and cleaning device according to claim 1, characterized in that, The blowing and cleaning device further includes a blowing height adjustment mechanism, a ranging component, and a positioning component. The blowing height adjustment mechanism includes a first driving component for driving the first support seat to undergo linear displacement. The ranging component includes a ranging component disposed on the first support, a first ranging clearance hole formed on the first support, and a second ranging clearance hole formed on the nozzle body. The ranging component, the first ranging clearance hole, and the second ranging clearance hole are arranged sequentially from top to bottom, and the ranging component is positioned directly opposite the first ranging clearance hole. The positioning component includes a transmitter, a receiver disposed opposite to the transmitter, and a blocking part that is directly or indirectly connected to the air guide channel and moves synchronously with the air guide channel. When the blocking part is located between the transmitting end and the receiving end, the center line of the first ranging clearance hole coincides with the center line of the second ranging clearance hole.

15. The purging and cleaning device according to claim 14, characterized in that, Before purging begins, the distance between the nozzle body and the spinneret is controlled via the first driving component, the ranging component, and the positioning component, thereby controlling the purging height; and / or, The ranging component is a laser ranging sensor; and / or, The first driving assembly includes a driving component, the output end of which is directly or indirectly connected to the first support, thereby driving the first support to undergo an upward or downward linear displacement; and / or, The second ranging clearance hole has two symmetrically arranged holes, which avoid the area where the airflow passage is located.

16. The purging and cleaning device according to claim 1, characterized in that, The blowing and cleaning device further includes a second drive assembly for driving the first blowing assembly to rotate along its own axis. The second drive assembly includes a transmission component sleeved on the air guide channel, a synchronous belt sleeved on the transmission component at one end, and a drive component whose output end is connected to the other end of the synchronous belt. The drive component is disposed on the first support. And / or, The second purging assembly further includes a sealing gasket disposed between the second support and the third support; and / or, The elastic element is a compression spring.

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