Purging device

Abstract

The utility model discloses a purging device which comprises an air supply assembly, a purging assembly and a driving mechanism used for driving the purging assembly to rotate along the axis of the purging assembly. The purging assembly comprises a purging spray head and an air guide channel, the purging spray head comprises a spray head body internally provided with a containing cavity and an airflow circulation hole communicated with the containing cavity and formed in the bottom of the spray head body, and the airflow circulation hole extends from the middle of the bottom of the spray head body to the edge; one end part of the air guide channel is relatively rotatably connected and communicated with the air supply assembly, and the other end part of the air guide channel is connected with the nozzle body and communicated with the accommodating cavity; according to the utility model, pulse-type purging is realized, the purging angle of purging airflow can be changed, and the purging effect is improved; and the purging device is simple to operate and easy to implement, the purging nozzle only needs to be aligned with a to-be-purged object such as a spinneret plate, and the utilization rate of an air source is high.

Description

Technical Field

[0001] This utility model relates to the field of chemical fiber spinning technology, and in particular to the cleaning of spinnerets, specifically to a blowing device. Background Technology

[0002] 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.

[0003] After spinning for a period of time, spinnerets not only accumulate residue inside the spinneret holes, but also have meltblown material adhering to their end faces. If not cleaned promptly, this will significantly affect the spinning effect over time. Currently, methods for cleaning spinnerets include airflow purging, such as patent CN219709654U, which discloses a meltblown spinneret purging device with double-sided cleaning function. This patent has a purging nozzle on both the upper and lower sides of the meltblown spinneret. First, the upper purging nozzle is activated to blow downwards through the spinneret holes. After purging, the lower purging nozzle is activated to blow upwards through the spinneret holes. The patent claims that this can effectively achieve double-sided purging, which is beneficial for cleaning the residual material inside the spinneret holes. However, in practice… On the one hand, this patent has blowing nozzles on both the top and bottom sides, and the working method of blowing downwards and then upwards can easily lead to the following undesirable phenomena: when blowing downwards, residual material is easily blown downwards to the blowing nozzles and surrounding parts, and when blowing upwards, residual material is easily blown upwards to the blowing nozzles and surrounding parts. As a result, residual material 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 spinnerets, the blowing equipment will be more difficult to clean. On the other hand, this patent requires blowing nozzles to be set on both the top and bottom sides to ensure the blowing effect, and clamping mechanisms on the left and right sides are also required in the middle, making the equipment structure more complex.

[0004] It is evident that existing blow-off equipment for spinnerets still has many shortcomings. Utility Model Content

[0005] The purpose of this invention is to overcome one or more deficiencies in the prior art and provide an improved pulse-type blowing device that has the advantages of good blowing effect and easy operation of the blowing process, which can be used to blow spinnerets.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A purging device, the purging device comprising an air supply assembly, a purging assembly, and a drive mechanism for driving the purging assembly to rotate along its own axis;

[0008] The 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 middle of the bottom of the nozzle body to the edge.

[0009] One end of the air guide channel is rotatably connected to and communicates with the air supply component, and the other end is connected to the nozzle body and communicates with the cavity.

[0010] According to some preferred aspects 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.

[0011] According to some preferred aspects of the present invention, the extending direction of the cavity is parallel to the extending direction of the airflow passage.

[0012] According to some preferred aspects 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 air supply assembly.

[0013] According to some preferred aspects of the present invention, the purging device further includes a support plate and a limiting bearing disposed on the support plate, wherein the air guide channel is partially engaged within the limiting bearing.

[0014] According to some preferred aspects of the present invention, the air supply assembly includes an air supply seat forming an air supply chamber, a first air supply nozzle, a second air supply nozzle, and an air outlet pipe. The first air supply nozzle, the second air supply nozzle, and the air outlet pipe are respectively connected to the air supply chamber, and the air outlet pipe is also connected to the air guide channel.

[0015] According to some preferred aspects of the present invention, the purging device further includes a support base with a clearance hole for an air guide channel, the air supply component is disposed on the support base, the nozzle body is located below the support base, and the air guide channel passes through the clearance hole for the air guide channel and is connected to the nozzle body.

[0016] Furthermore, the drive mechanism includes a transmission component sleeved on the air guide channel, a synchronous belt with one end sleeved on the transmission component, and a drive component whose output end is connected to the other end of the synchronous belt. The drive component is disposed on the support base.

[0017] Furthermore, the purging device also includes a ranging component, which includes a ranging part disposed on the support, a first ranging clearance hole formed on the nozzle body, and a second ranging clearance hole formed on the support. The ranging part, the second ranging clearance hole, and the first ranging clearance hole are arranged sequentially from top to bottom, and the ranging part and the second ranging clearance hole are directly opposite each other.

[0018] In some embodiments of this utility model, the purging device includes a distance measuring state for measuring the distance between the nozzle body and the object to be purged. When in the distance measuring state, the center line of the first distance measuring clearance hole coincides with the center line of the second distance measuring clearance hole.

[0019] According to some preferred aspects of the present invention, the first ranging clearance hole has a plurality of evenly distributed holes, and any one of the first ranging clearance holes can be collinear with the second ranging clearance hole.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] Based on the shortcomings of current methods for cleaning and blowing spinnerets, such as poor blowing effect, complex operation, and low air source utilization, this utility model innovatively provides an improved blowing device. This device, through the organic combination of an air supply component, a blowing component, and a drive mechanism, firstly achieves pulsed blowing of the spinneret. During blowing, it extends radially and then rotates around the center to achieve overall pulsed blowing. The intermittent airflow creates an unstable flow state within the spinneret orifices of the spinneret, generating strong disturbances. These disturbances continuously change the airflow environment around the impurities, increasing the contact area and frequency between the impurities and the airflow. Furthermore, during the blowing interval, the pressure within the spinneret orifices drops. When blowing resumes, a high-speed airflow rushes in instantaneously, generating a large impact force, which can more effectively break and peel off impurities and dust adhering to the surface, thereby improving the blowing effect.

[0022] Secondly, the airflow passage of this utility model 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, increase the purging particle size, and the rotating output gas, due to the high speed and inertial force, the airflow enters the spinneret hole at a large frequency in an inclined manner. The tangential entry method is exactly in line with the setting of the spinneret hole on the spinneret plate, which is conducive to removing debris and other materials adhering to the inner wall of the spinneret hole.

[0023] In addition, the purging device of this invention is simple to operate and easy to implement. It only requires aligning the purging nozzle with the spinneret, and the air source utilization rate is high. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is one of the structural schematic diagrams of the purging device in the embodiments of this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a side view of the purging device in an embodiment of the present invention;

[0028] Figure 4 This is the second schematic diagram of the purging device in the embodiments of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the purging nozzle in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the airflow passage purging spinneret in an embodiment of this utility model;

[0031] Figure 7 This is a schematic diagram of debris inside the holes of the spinneret in an embodiment of this utility model;

[0032] In the attached drawings, the following are the reference numerals: 1. Air supply assembly; 11. Air supply base; 12. First air supply nozzle; 13. Second air supply nozzle; 14. Air outlet pipe; 2. Purge assembly; 21. Purge nozzle; 211. Nozzle body; 2111. Cavity; 2112. Airflow orifice; 2113. First distance measuring clearance hole; 2114. Grooved machining opening; 22. Air guide channel; 221. Rotary joint; 222. Air guide pipe; 3. Drive mechanism; 31. Transmission component; 32. Synchronous belt; 33. Drive component; 4. Support plate; 41. Limit bearing; 5. Bearing seat; 51. Air guide channel clearance hole; 52. Second distance measuring clearance hole; 100. Spinneret; 110. Upper surface of spinneret; 200. Debris. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the present utility model 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 full understanding of the present utility model. However, the present utility model can be implemented 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 utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below.

[0034] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, 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.

[0036] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0037] like Figures 1 to 7 As shown, this example provides a purging device, which includes an air supply assembly 1, a purging assembly 2, and a drive mechanism 3 for driving the purging assembly 2 to rotate along its own axis. The purging assembly 2 includes a purging nozzle 21 and an air guide channel 22. The purging nozzle 21 includes a nozzle body 211 with an internal cavity 2111 and an airflow passage 2112 that communicates with the cavity 2111 and is formed at the bottom of the nozzle body 211. The airflow passage 2112 extends from the middle of the bottom of the nozzle body 211 to the edge. One end of the air guide channel 22 is rotatably connected to and communicates with the air supply assembly 1, and the other end is connected to the nozzle body 211 and communicates with the cavity 2111.

[0038] In this example, the opening area of ​​the airflow orifice 2112 accounts for 0.01%-5% of the area of ​​the bottom of the nozzle body 211, 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. Furthermore, the extending direction of the cavity 2111 is parallel to the extending direction of the airflow orifice 2112.

[0039] In this example, the air guide channel 22 includes a rotary joint 221 and an air guide pipe 222 connected to the lower part of the rotary joint 221. The lower end of the air guide pipe 222 is threadedly connected to the nozzle body 211. The upper part of the rotary joint 221 is rotatably connected to and communicates with the air supply assembly 1.

[0040] In this example, the purging device also includes a support plate 4, a limiting bearing 41 disposed on the support plate 4, and a carrier 5 with a guide channel clearance hole 51. The guide channel 2 is partially engaged within the limiting bearing 41. The air supply assembly 1 is disposed on the carrier 5, and the nozzle body 211 is located below the carrier 5. The guide channel 22 passes through the guide channel clearance hole 51 and connects to the nozzle body 211. Further, the drive mechanism 3 includes a transmission component 31 sleeved on the guide channel 22, a synchronous belt 32 with one end sleeved on the transmission component 31, and a drive component 33 whose output end is drively connected to the other end of the synchronous belt 32. The drive component 33 is disposed on the carrier 5.

[0041] In this example, the air supply assembly 1 includes an air supply seat 11 with an air supply chamber, a first air supply nozzle 12, a second air supply nozzle 13, and an air outlet pipe 14. The first air supply nozzle 12, the second air supply nozzle 13, and the air outlet pipe 14 are respectively connected to the air supply chamber, and the air outlet pipe 14 is also connected to the air guide channel 22. It is possible to use one of the first air supply nozzle 12 and the second air supply nozzle 13 to introduce high-temperature compressed gas, and the other to introduce room-temperature compressed air.

[0042] In this example, the purging device also includes a ranging assembly, which includes a ranging component (not shown) mounted on the support 5, a first ranging clearance hole 2113 formed on the nozzle body 211, and a second ranging clearance hole 52 formed on the support 5. The ranging component, the second ranging clearance hole 52, and the first ranging clearance hole 2113 are arranged sequentially from top to bottom, with the ranging component and the second ranging clearance hole 52 facing each other. Furthermore, the purging device includes a ranging state for measuring the distance between the nozzle body 211 and the object to be purged, such as a spinneret. When in the ranging state, the centerline of the first ranging clearance hole 2113 coincides with the centerline of the second ranging clearance hole 52, allowing the ranging signal (e.g., a laser ranging sensor) from the ranging component to pass through these clearance holes and illuminate the spinneret, thereby enabling ranging, such as laser ranging.

[0043] In this example, there are multiple first ranging clearance holes 2113 evenly distributed, and any one of the first ranging clearance holes 2113 can be collinear with the second ranging clearance hole 52.

[0044] Further, see Figures 1 to 3As shown, the air outlet pipe 14 is connected to the rotary joint 221 (which can be purchased commercially and whose main function is to achieve connection and relative rotation). The rotary joint 221 and the air guide pipe 222 can be detachably connected. The air guide pipe 222 can be connected to the nozzle body 211 by a threaded connection. For example, an external thread can be provided on the outer wall of the air guide pipe 222 and an internal thread can be provided on the nozzle body 211, so that the two can be quickly connected. At the same time, a transmission component 31 is also provided on the outer periphery of the air guide pipe 222, which is driven by a synchronous belt 32. The rotation of component 31 drives the air guide tube 222 to rotate, which in turn drives the nozzle body 211 to rotate synchronously. The synchronous belt 32 can also be moved by the drive component 33. For example, the drive component 33 may include a drive source (motor, etc.) and a synchronous pulley connected to the drive source. One end of the synchronous belt 32 is sleeved on the drive component 31, and the other end is sleeved on the synchronous pulley. When the drive source drives the synchronous pulley to rotate, it can drive the synchronous belt 32 to rotate accordingly, thereby driving the drive component 31 to rotate, so that the nozzle body 211 rotates along its own axis, thereby realizing the pulse purging method. Furthermore, due to the presence of the screw joint 221, when the air guide channel 22 and the purge nozzle 21 rotate synchronously, the air outlet pipe 14 will not rotate unexpectedly, ensuring the stability of the device operation. In addition, by setting, for example, a limit bearing 41 or other components, it can be sleeved on the air guide pipe 222, and then the limit bearing 41 can be fixed on the support plate 4. The support plate 4 can be fixed on the bearing seat 5, which helps to achieve the support stability of the air supply component 1.

[0045] Furthermore, in this example, before purging begins, the distance between the nozzle body 211 and the spinneret 100 can be controlled by a ranging component, which means the purging height can be controlled to adapt to the optimal purging distance for spinnerets of different specifications, such as different thicknesses. Specifically, the first ranging clearance hole 2113 on the nozzle body 211 is rotated to coincide with the center line of the second ranging clearance hole 52 on the support 5. In this way, the ranging component can be, for example, a laser ranging sensor. The signal emitted by the sensor, such as a laser, can pass through multiple components, i.e., some intermediate obstructions, so that the laser can irradiate the spinneret, thereby achieving distance measurement. Since the distance between the ranging component and the nozzle body is fixed, when the distance between the ranging component and the spinneret is known, the distance between the nozzle body and the spinneret can be known. At this time, the purging height of the entire device can be controlled according to the actual data obtained, so that the entire device undergoes an upward or downward linear displacement relative to the spinneret, thereby achieving control of the distance between the nozzle body and the spinneret, i.e., controlling the purging height to achieve the best purging effect.

[0046] See Figure 4 and Figure 5As shown, the purge nozzle in this example is provided with multiple first ranging clearance holes, preferably two symmetrical holes, and the direction of the holes is avoided from the area where the airflow passage 2112 is located. This helps to ensure the overall weight balance on both sides and improves the stability during rotation. The cavity 2111 is roughly elongated. Since it is located inside the nozzle body 211, it can be created by chiseling through the slotted processing port 2114. After the slotted processing port 2114 is completed, it can be sealed to prevent gas leakage. At the same time, the upper surface of the nozzle body 211 has an opening that connects with the air guide pipe, which facilitates the delivery of compressed air into the cavity 2111 and then spraying it outward from the airflow passage 2112.

[0047] See Figure 6 and Figure 7 As shown, Figure 6 The diagram illustrates how the airflow orifice 2112 performs pulsed blowing on the spinneret 100 during rotation. Figure 7 The diagram shows the attachment of debris in the spinneret orifice on the spinneret plate 100. In this example, since the airflow passage 2112 is driven to rotate, the direction of the airflow entering the spinneret orifice will change due to the high-speed outflow of the airflow and the effect of inertial force during the rotation. This not only increases the disturbance force of the airflow, but also allows the debris to be blown away in a more favorable direction, thereby facilitating the removal of debris 200 from the upper surface 110 of the spinneret plate and the spinneret orifice.

[0048] In summary, based on the shortcomings of current methods for cleaning and purging spinnerets, such as poor purging effect, complex operation, and low air source utilization, this utility model innovatively provides an improved purging device. This device, through the organic combination of an air supply component, a purging component, and a drive mechanism, firstly achieves pulsed purging of the spinneret. During purging, the airflow extends radially and then rotates around the center to achieve overall pulsed purging. 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 purging interval, the pressure within the spinneret orifices drops. When purging resumes, a high-speed airflow rushes in instantaneously, generating a significant impact. First, the force can more effectively break down and peel off impurities and dust adhering to the surface, thus improving the purging effect. Second, the airflow orifice of this 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 purging of more areas per unit time, but also increase the flow rate and pressure of the airflow when it is blown out, increase the purging particle size, and the rotary output gas, due to the high-speed rush and the effect of inertial force, the airflow enters the spinneret hole at a large frequency in an inclined manner. The tangential entry method is just right to match the setting of the spinneret hole on the spinneret plate, which is conducive to removing debris and other materials adhering to the inner wall of the spinneret hole. In addition, the purging device of this invention is simple to operate and easy to implement. Just align the purging nozzle with the spinneret plate, and the air source utilization rate is high.

[0049] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

[0050] 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 purging device, characterized in that, The purging device includes an air supply component, a purging component, and a drive mechanism for driving the purging component to rotate along its own axis. The 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 middle 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 air supply component, and the other end is connected to the nozzle body and communicates with the cavity.

2. The purging device according to claim 1, characterized in that, The opening area of ​​the airflow orifice accounts for 0.01%-5% of the area of ​​the bottom of the nozzle body; and / or, the extension direction of the cavity is parallel to the extension direction of the airflow orifice.

3. The purging 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 air supply assembly.

4. The purging device according to claim 1, characterized in that, The purging device also includes a support plate and a limiting bearing disposed on the support plate, and the air guide channel is partially locked in the limiting bearing.

5. The purging device according to claim 1, characterized in that, The air supply assembly includes an air supply seat with an air supply chamber, a first air supply nozzle, a second air supply nozzle, and an air outlet pipe. The first air supply nozzle, the second air supply nozzle, and the air outlet pipe are respectively connected to the air supply chamber, and the air outlet pipe is also connected to the air guide channel.

6. The purging device according to claim 1, characterized in that, The purging device also includes a support base with a clearance hole for an air guide channel. The air supply component is disposed on the support base, and the nozzle body is located below the support base. The air guide channel passes through the clearance hole for the air guide channel and is connected to the nozzle body.

7. The purging device according to claim 6, characterized in that, The drive mechanism includes a transmission component sleeved on the air guide channel, a synchronous belt with one end sleeved on the transmission component, and a drive component whose output end is connected to the other end of the synchronous belt. The drive component is mounted on the support.

8. The purging device according to claim 6, characterized in that, The purging device further includes a ranging component, which includes a ranging part disposed on the support, a first ranging clearance hole formed on the nozzle body, and a second ranging clearance hole formed on the support. The ranging part, the second ranging clearance hole, and the first ranging clearance hole are arranged sequentially from top to bottom, and the ranging part and the second ranging clearance hole are directly opposite each other.

9. The purging device according to claim 8, characterized in that, The purging device includes a distance measuring state for measuring the distance between the nozzle body and the object to be purged. When in the distance measuring state, the center line of the first distance measuring clearance hole coincides with the center line of the second distance measuring clearance hole.

10. The purging apparatus according to claim 8, characterized in that, The first ranging clearance hole has multiple evenly distributed holes, and any one of the first ranging clearance holes can be collinear with the second ranging clearance hole.

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