Spinneret detection device and detection method thereof

Abstract

The present invention belongs to the field of detection technology, and specifically relates to a spinneret detection device and a detection method thereof. The spinneret detection device comprises: a mounting plate, on which a mounting groove for placing a spinneret is provided, and a flow hole is provided at the bottom of the mounting groove; a first driver is arranged on the mounting plate, and is used to drive the spinneret in the mounting groove to rotate so that the spinneret through-hole to be detected on the spinneret coincides with the flow hole; an air nozzle is located above the mounting plate, connected to the second driver, and is used to cover the spinneret through-hole to be detected and blow air; a detection mechanism is located below the mounting plate; the spinneret detection device and the detection method thereof obtain audio data at the air hole by arranging a pickup, and compare the obtained audio data with audio data emitted by a standard spinneret through-hole at the air hole, so as to determine that impurities exist in the spinneret through-hole to be detected when the two audio data are different; at the same time, impurities are cleaned up through an outer sleeve and an inner tube when impurities are detected.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and in particular relates to a device for detecting based on sound, and more particularly to a spinneret detection device and a detection method thereof. Background Art

[0002] The spinneret is a key component in chemical fiber production, mainly used to extrude polymer melt or solution through the spinneret holes to form continuous fibers.

[0003] After the spinneret is used, ultrasonic cleaning equipment is generally used to clean it and the spinneret holes thereon. However, ultrasonic cleaning may cause uneven cleaning at the edges or deep holes of large spinnerets or complex structures (such as multiple rows of micropores), resulting in impurities remaining in the spinneret holes, which in turn affects subsequent use.

[0004] Therefore, the technical problem of how to detect the presence of impurities in the spinneret holes and clean them accurately is urgently needed to be solved by those skilled in the art.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a spinneret detection device and a detection method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a spinneret detection device, comprising: a mounting plate having a mounting groove for placing a spinneret, a flow hole being formed at the bottom of the mounting groove; a first driver, disposed on the mounting plate, for driving the spinneret in the mounting groove to rotate so that the spinneret through-hole to be detected on the spinneret coincides with the flow hole; an air nozzle, located above the mounting plate and connected to the second driver, for covering the spinneret through-hole to be detected and blowing air; a detection mechanism, located below the mounting plate, comprising: an outer sleeve, an inner tube, and a pickup, the outer sleeve covering the flow hole, the inner tube inserted into the outer sleeve, and the pickup disposed at the air hole on the side wall of the inner tube; a control module, electrically connected to the pickup, configured to control the pickup to obtain audio data at the air hole, and further configured to compare the obtained audio data with audio data emitted at the air hole of a standard spinneret under the same conditions, so as to determine the presence of impurities in the spinneret to be detected when the two audio data are different.

[0008] In an optional embodiment, the front end of the inner tube is opened and located in the outer tube; the air hole is located on the side wall in the middle of the inner tube; a valve core assembly is provided at the rear end of the inner tube; wherein when the pickup acquires audio data, the valve core assembly blocks the rear end opening of the inner tube.

[0009] In an optional embodiment, the inner tube is connected to a third driver; the control module is electrically connected to the third driver and is configured to control the third driver to drive the inner tube to move along the outer tube until it extends into the spinneret to clean the impurities when impurities exist in the spinneret; wherein when the inner tube moves, the valve core assembly opens the rear end opening of the inner tube.

[0010] In an optional embodiment, the valve core assembly includes: a lifting block, a spring and a stop block; the lifting block is inserted on the side wall of the inner tube and is arranged to slide radially along the inner tube; the spring is sleeved on the periphery of the lifting block and is suitable for pushing the lifting block away from the inner tube so that the outer end of the lifting block is against the stop block; when the pickup obtains audio data, the lifting block blocks the inner tube; when the inner tube moves, the spring pushes the lifting block to open the inner tube.

[0011] In an optional embodiment, the stop block is provided with an inclined surface on one side facing the lifting block; wherein when the inner tube moves, the outer end portion of the lifting block abuts against the inclined surface of the stop block to achieve lifting movement.

[0012] In an optional embodiment, the end of the inner tube away from the outer tube is located in the dust collecting chamber; when the inner tube moves, the air hole extends into the outer tube, and the end of the inner tube away from the outer tube is always located in the dust collecting chamber.

[0013] In the second aspect, the embodiment of the present disclosure also provides a detection method for a spinneret detection device, comprising: driving the spinneret through-hole to be detected on the spinneret to coincide with the flow hole of the mounting slot through a first driver; driving the air nozzle to cover the spinneret through-hole to be detected and blow air through a second driver; covering the flow hole through an outer sleeve and cooperating with an inner tube to guide the flow; obtaining audio data at the air hole on the inner tube through a microphone; configuring the control module to control the microphone to obtain audio data, and comparing the obtained audio data with the audio data emitted at the air hole of a standard spinneret under the same conditions, so as to determine that impurities exist in the spinneret through-hole to be detected when the two audio data are different.

[0014] In an optional embodiment, the front end opening of the inner tube is located inside the outer tube, and a valve core assembly is provided at the rear end opening of the inner tube; wherein the valve core assembly blocks the rear end opening of the inner tube when the pickup acquires audio data; and the valve core assembly opens the rear end opening of the inner tube when the inner tube moves.

[0015] In an optional embodiment, the inner tube is connected to a third driver; wherein the control module is configured to control the third driver to drive the inner tube to move toward the spinneret to clean the impurities in the spinneret when there are impurities in the spinneret to be detected.

[0016] In an optional embodiment, the outer end of the inner tube is placed in the dust collecting chamber; wherein when the inner tube cleans impurities in the spinneret hole, the inner tube is suitable for guiding the impurities into the dust collecting chamber.

[0017] The beneficial effect of the present invention is that the spinneret detection device and the detection method thereof obtain audio data at the air hole by setting a microphone, and compare the obtained audio data with the audio data emitted at the air hole of a standard spinneret under the same conditions, so as to judge that there are impurities in the spinneret to be detected when the two audio data are different; at the same time, by setting an outer tube and an inner tube, when impurities are detected, the inner tube is extended into the spinneret to clean the impurities, and guide the impurities into the dust collecting chamber for collection.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a spinneret detection device provided in an embodiment of the present disclosure;

[0022] Figure 2 A schematic structural diagram of a spinneret provided in an embodiment of the present disclosure;

[0023] Figure 3 A schematic structural diagram of a mounting plate provided in an embodiment of the present disclosure;

[0024] Figure 4 A schematic structural diagram of a detection mechanism provided in an embodiment of the present disclosure;

[0025] Figure 5 A schematic diagram of the structure of an inner tube detection provided by an embodiment of the present disclosure;

[0026] Figure 6 A schematic structural diagram of an inner tube cleaning method provided in an embodiment of the present disclosure.

[0027] In the picture:

[0028] Mounting plate 1, mounting groove 11, flow hole 12;

[0029] First driver 2, drive shaft 21;

[0030] Gas nozzle 3;

[0031] Detection mechanism 4, outer sleeve 41, inner tube 42, air hole 421, valve core assembly 43, lifting block 431, spring 432, stopper 433;

[0032] Spinneret 5, spinneret through hole 51;

[0033] Second driver 6;

[0034] Dust collecting chamber 7. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 2 As shown, the spinneret 5 is circular and has a plurality of spinneret holes 51 formed thereon. Each spinneret hole 51 is located on a circle with the axis of the spinneret 5 as the center point. After the spinneret 5 is cleaned by a cleaning device, impurities may still exist in the spinneret holes 51, affecting subsequent use. Therefore, the impurities in the spinneret holes 51 need to be cleaned again.

[0037] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe the technical content.

[0038] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0039] like Figures 1 to 4 As shown, at least one embodiment provides a spinneret detection device, comprising: a mounting plate 1 , a first driver 2 , an air nozzle 3 and a detection mechanism 4 .

[0040] Specifically, such as Figure 3As shown, the mounting plate 1 is located on the operating platform, and a mounting groove 11 is provided on the mounting plate 1. The shape of the mounting groove 11 is adapted to the spinneret 5 to be tested; wherein, an overflow hole 12 is provided at the bottom of the mounting groove 11, and the shape of the overflow hole 12 is the same as that of the spinneret through-hole 51, and the overflow hole 12 is located on the circumference where the spinneret through-hole 51 is located.

[0041] Specifically, such as Figure 3 As shown, the first driver 2 adopts a servo motor, and its driving shaft 21 is in contact with the side wall of the spinneret 5 in the installation groove 11, thereby driving the spinneret 5 to rotate so that the spinneret through hole 51 to be detected on the spinneret 5 coincides with the flow hole 12.

[0042] Specifically, such as Figure 1 As shown, the air nozzle 3 is located above the mounting plate 1 and is connected to the second driver 6, which is a cylinder. During testing, the second driver 6 drives the air nozzle 3 to move downward to cover the spinneret hole 51 to be tested, and then the air nozzle 3 blows air into the spinneret hole 51.

[0043] Specifically, such as Figure 4 As shown, the detection mechanism 4 is located below the mounting plate 1, and the detection mechanism 4 includes: an outer sleeve 41, an inner tube 42 and a pickup; wherein, one end of the outer sleeve 41 is against the bottom of the mounting plate 1 and covers the flow hole 12, one end of the inner tube 42 is inserted into the outer sleeve 41, and an air hole 421 is opened on the side wall of the inner tube 42, and the pickup is set at the air hole 421.

[0044] Specifically, the control module is configured to control the pickup to obtain audio data at the air hole 421, and compare the obtained audio data with the audio data emitted at the air hole 421 of the standard spinneret 51 under the same conditions, so as to determine that there are impurities in the spinneret 51 to be detected when the two audio data are different.

[0045] In this embodiment, according to the control variable method, when other conditions are the same, when there are impurities in the spinneret hole 51, the sound emitted by the air flow through the spinneret hole 51 at the air hole 421 will be different from the sound emitted at the air hole 421 when there are no impurities. Therefore, audio data is collected by a microphone and compared with pre-stored standard audio data. When there is a difference, it indicates that there are impurities in the spinneret hole 51.

[0046] In some embodiments, the front end of the inner tube 42 is opened and located in the outer tube 41; the air hole 421 is located on the side wall in the middle of the inner tube 42; a valve core assembly 43 is provided at the rear end of the inner tube 42; when the pickup obtains audio data, the valve core assembly 43 blocks the rear end opening of the inner tube 42.

[0047] In this embodiment, during detection, the valve core assembly 43 blocks the rear end opening of the inner tube 42 so that the air flow can only flow out from the air holes 421 on the side wall of the inner tube 42 to ensure the stability of the detection.

[0048] like Figure 4 As shown, in some embodiments, the inner tube 42 is connected to the third driver; the control module is electrically connected to the third driver, and is configured to control the third driver to drive the inner tube 42 to move along the outer tube 41 until it extends into the spinneret hole 51 to clean the impurities when impurities exist in the spinneret hole 51; wherein when the inner tube 42 moves, the valve core assembly 43 opens the rear end opening of the inner tube 42.

[0049] Specifically, the third driver is a cylinder, which is not shown in the figure; the end of the inner tube 42 is made of flexible material, and its diameter is adapted to the inner diameter of the spinneret through-hole 51 .

[0050] In this embodiment, when there are impurities in the spinneret hole 51, the inner tube 42 is extended into the spinneret hole 51 to clean the impurities on the inner wall of the spinneret hole 51. At this time, the valve core assembly 43 opens the rear end opening of the inner tube 42, and the cleaned impurities are blown into the dust collecting chamber 7 along the inner tube 42 with the airflow.

[0051] like Figure 5 、 Figure 6 As shown, in some embodiments, the valve core assembly 43 includes: a lifting block 431, a spring 432 and a stop block 433; the lifting block 431 is inserted on the side wall of the inner tube 42 and is arranged to slide radially along the inner tube 42; the spring 432 is sleeved on the outer periphery of the lifting block 431, suitable for pushing the lifting block 431 away from the inner tube 42 so that the outer end of the lifting block 431 is against the stop block 433; when the pickup obtains audio data, the lifting block 431 blocks the inner tube 42; when the inner tube 42 moves, the spring 432 pushes the lifting block 431 to open the inner tube 42.

[0052] like Figure 5 As shown, in some embodiments, the stopper 433 is provided with an inclined surface 434 on one side facing the lifting block 431; when the inner tube 42 moves, the outer end of the lifting block 431 abuts against the inclined surface 434 of the stopper 433 to achieve lifting movement.

[0053] like Figure 4 As shown, in some embodiments, the end of the inner tube 42 away from the outer tube 41 is located in the dust collecting chamber 7; when the inner tube 42 moves, the air hole 421 extends into the outer tube 41, and the end of the inner tube 42 away from the outer tube 41 is always located in the dust collecting chamber 7.

[0054] In this embodiment, the dust collecting chamber 7 is used to collect impurities on the inner wall of the inner tube 42. The valve core assembly 43 blocks the rear end opening of the inner tube 42 when the microphone obtains audio data, preventing the airflow from entering the dust collecting chamber 7, and lifting the impurities in the dust collecting chamber 7 and returning them to the inner tube 42.

[0055] At least one embodiment also provides a detection method for a spinneret detection device, comprising: driving the spinneret through hole 51 to be detected on the spinneret 5 to coincide with the flow hole 12 of the mounting slot 11 through the first driver 2; driving the air nozzle 3 to cover the spinneret through hole 51 to be detected and blow air through the second driver 6; covering the flow hole 12 through the outer sleeve 41, and cooperating with the inner tube 42 to guide the flow; obtaining audio data at the air hole 421 on the inner tube 42 through the microphone; configuring the control module to control the microphone to obtain audio data, and comparing the obtained audio data with the audio data emitted at the air hole 421 of the standard spinneret through hole 51 under the same conditions, so as to determine that there are impurities in the spinneret through hole 51 to be detected when the two audio data are different.

[0056] In some embodiments, the front end opening of the inner tube 42 is located inside the outer tube 41, and a valve core assembly 43 is provided at the rear end opening of the inner tube 42; the valve core assembly 43 blocks the rear end opening of the inner tube 42 when the pickup acquires audio data; and the valve core assembly 43 opens the rear end opening of the inner tube 42 when the inner tube 42 moves.

[0057] In some embodiments, the inner tube 42 is connected to the third driver; wherein the control module is configured to control the third driver to drive the inner tube 42 to move toward the spinneret hole 51 to clean the impurities in the spinneret hole 51 when there are impurities in the spinneret hole 51 to be detected.

[0058] In some embodiments, the outer end of the inner tube 42 is placed in the dust collecting chamber 7 ; wherein when the inner tube 42 cleans impurities in the spinneret through-hole 51 , the inner tube 42 is adapted to guide the impurities into the dust collecting chamber 7 .

[0059] To sum up, the present spinneret detection device and its detection method obtain audio data at the air hole 421 by setting a microphone, and compare the obtained audio data with the audio data emitted at the air hole 421 of the standard spinneret 51 under the same conditions, so as to judge that there are impurities in the spinneret 51 to be detected when the two audio data are different; at the same time, by setting the outer sleeve 41 and the inner tube 42, when impurities are detected, the inner tube 42 is extended into the spinneret 51 to clean the impurities, and guide the impurities into the dust collecting chamber 7 for collection.

[0060] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component or a third component may be interposed between the first component and the second component.

[0061] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0062] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0063] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0064] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0065] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0067] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0068] In the above discussion, unless otherwise indicated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0069] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A spinneret detection device, characterized in that: include: A mounting plate (1) is provided with a mounting groove (11) for placing the spinneret (5), and a flow hole (12) is provided at the bottom of the mounting groove (11); A first driver (2) is provided on the mounting plate (1) and is used to drive the spinneret (5) in the mounting groove (11) to rotate so that the spinneret through hole (51) to be detected on the spinneret (5) coincides with the flow hole (12); An air nozzle (3) is located above the mounting plate (1) and is connected to the second driver (6) for covering the spinneret hole (51) to be tested and blowing air; The detection mechanism (4) is located below the mounting plate (1), and comprises: an outer sleeve (41), an inner tube (42), and a pickup, wherein the outer sleeve (41) covers the flow hole (12), the inner tube (42) is inserted into the outer sleeve (41), and the pickup is arranged at the air hole (421) on the side wall of the inner tube (42); The control module is electrically connected to the microphone and is configured to control the microphone to obtain audio data at the air hole (421), and is also configured to compare the obtained audio data with audio data emitted at the air hole (421) of a standard spinneret hole (51) under the same conditions, and judge that impurities exist in the spinneret hole (51) to be detected based on the difference between the two audio data.

2. The spinneret detection device according to claim 1, characterized in that: The front end of the inner tube (42) is opened and is located in the outer tube (41); The air hole (421) is located on the side wall of the middle portion of the inner tube (42); A valve core assembly (43) is provided at the rear end of the inner tube (42); When the pickup acquires audio data, the valve core component (43) blocks the rear end opening of the inner tube (42).

3. The spinneret detection device according to claim 2, characterized in that: The inner tube (42) is connected to the third driver; The control module is electrically connected to the third driver and is configured to control the third driver to drive the inner tube (42) to move along the outer tube (41) until it extends into the spinneret hole (51) to clean the impurities when impurities exist in the spinneret hole (51); wherein When the inner tube (42) moves, the valve core assembly (43) opens the rear end opening of the inner tube (42).

4. The spinneret detection device according to claim 3, wherein: The valve core assembly (43) includes: a lifting block (431), a spring (432) and a stop block (433); The lifting block (431) is inserted into the side wall of the inner tube (42) and is slidably arranged along the radial direction of the inner tube (42); The spring (432) is sleeved on the periphery of the lifting block (431) and is suitable for pushing the lifting block (431) to move away from the inner tube (42) so that the outer end of the lifting block (431) abuts against the stop block (433); When the pickup acquires audio data, the lifting block (431) blocks the inner tube (42); When the inner tube (42) moves, the spring (432) pushes the lifting block (431) to open the inner tube (42).

5. The spinneret detection device according to claim 4, characterized in that: The stopper (433) is provided with an inclined surface (434) on one side facing the lifting block (431); When the inner tube (42) moves, the outer end of the lifting block (431) abuts against the inclined surface (434) of the stop block (433) to achieve lifting movement.

6. The spinneret detection device according to claim 5, characterized in that: One end of the inner tube (42) away from the outer tube (41) is located in the dust collecting chamber (7); wherein When the inner tube (42) moves, the air hole (421) extends into the outer tube (41), and the end of the inner tube (42) away from the outer tube (41) is always located in the dust collecting chamber (7).

7. A detection method for a spinneret detection device according to any one of claims 1 to 6, characterized in that: include: The first driver (2) drives the spinneret through hole (51) to be detected on the spinneret plate (5) to coincide with the flow hole (12) of the mounting groove (11); The air nozzle (3) is driven by the second driver (6) to cover the spinneret through hole (51) to be inspected and blow air; The outer sleeve (41) covers the flow hole (12) and cooperates with the inner tube (42) to guide the flow; Acquiring audio data at the air hole (421) on the inner tube (42) through a pickup; The control module is configured to control the microphone to obtain audio data, and compare the obtained audio data with the audio data emitted at the air hole (421) of the standard spinneret hole (51) under the same conditions, so as to determine that impurities exist in the spinneret hole (51) to be detected when the two audio data are different.

8. The detection method of the spinneret detection device according to claim 7, characterized in that: The front end opening of the inner tube (42) is located inside the outer tube (41), and a valve core assembly (43) is provided at the rear end opening of the inner tube (42); wherein The valve core assembly (43) blocks the rear end opening of the inner tube (42) when the pickup acquires audio data; The rear end opening of the inner tube (42) is opened when the inner tube (42) moves by the valve core assembly (43).

9. The detection method of the spinneret detection device according to claim 8, characterized in that: The inner tube (42) is connected to the third driver; wherein The control module is configured to control the third driver to drive the inner tube (42) to move toward the spinneret hole (51) to clean the impurities in the spinneret hole (51) when impurities exist in the spinneret hole (51) to be detected.

10. The detection method of the spinneret detection device according to claim 9, characterized in that: The outer end of the inner tube (42) is placed in the dust collecting chamber (7); wherein When the inner tube (42) cleans impurities in the spinneret through-hole (51), the inner tube (42) is suitable for guiding the impurities into the dust collecting chamber (7).

Images