A spinneret detection device

Abstract

This utility model provides a spinneret detection device, including a fixed base, a connecting cylinder, and a push rod adapted to the connecting cylinder. The fixed base has a mounting groove and a mounting hole communicating with the mounting groove, the axes of the mounting groove and the mounting hole coinciding. The connecting cylinder has a first through hole, a second through hole communicating with the first through hole, and a limiting groove communicating with the second through hole. The inner wall of the first through hole is slidably connected to the push rod. The limiting groove is located on the end face of one axial end of the connecting cylinder. When the end face of the connecting cylinder with the limiting groove abuts against the bottom of the mounting groove, the mounting hole, the limiting groove, and the first through hole communicate to form a fixed space for installing and fixing the spinneret. This utility model has a simple structure, convenient operation, intuitive detection, low cost, and high applicability.

Description

Technical Field

[0001] This utility model relates to the field of spinneret detection technology, and in particular to a spinneret detection device. Background Technology

[0002] The spinneret is a key component in the hollow fiber forming process. Its pore diameter is extremely small, and it is easy for it to become locally blocked during long-term use, which seriously affects the forming quality of hollow fibers. Therefore, it is necessary to detect and identify abnormal spinnerets in a timely manner.

[0003] Currently, the detection method for spinnerets typically employs optical detection. The process includes: before detection, the spinneret is cleaned ultrasonically to remove the spinning raw materials and oil stains adhering to the surface, preventing impurities from obstructing the optical signal; then, the spinneret is fixed on a dedicated stage, and the optical system parameters are preset according to the spinneret model. During the detection stage, images of the micropores and surface are acquired through an optical lens and image sensor. After processing by algorithms such as edge enhancement and threshold segmentation, the grayscale values ​​are compared and geometric parameters are matched with a standard sample image to ultimately determine whether the spinneret is abnormal.

[0004] However, in practical applications, the equipment required for optical inspection methods is expensive to purchase and maintain, has a high operational threshold, and requires operators to possess professional knowledge of optical imaging principles and parameter tuning. Furthermore, optical inspection systems have stringent environmental requirements, making it difficult to meet the application needs for low-cost inspection. Therefore, there is an urgent need to develop a new type of spinneret inspection device. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a spinneret detection device, which aims to solve the technical problems that the current detection methods for spinnerets usually adopt optical detection methods, which require high costs for purchasing and maintaining supporting equipment, high operating threshold, require operators to have professional knowledge of optical imaging principles and parameter debugging, and have high requirements for the detection environment, making it difficult to meet the application needs of low-cost detection.

[0006] The purpose of this utility model is to provide a spinneret detection device, which includes a spinneret detection device, characterized in that it includes a fixed base, a connecting cylinder and a push rod adapted to the connecting cylinder, the fixed base is provided with a mounting groove and a mounting hole communicating with the mounting groove, and the axis of the mounting groove and the mounting hole coincides.

[0007] The connecting cylinder is provided with a first through hole, a second through hole communicating with the first through hole, and a limiting groove communicating with the second through hole. The inner wall of the first through hole is slidably connected to the push rod. The limiting groove is provided on the end face of one end of the connecting cylinder in the axial direction. When the end face of the connecting cylinder with the limiting groove abuts against the bottom of the mounting groove, the mounting hole, the limiting groove and the first through hole communicate to form a fixed space for installing and fixing the spinneret.

[0008] In addition, the spinneret detection device according to the present invention may also have the following additional technical features:

[0009] Furthermore, the fixing base includes a first fixing part and a second fixing part. The first fixing part is provided with the mounting groove and the mounting hole. A limiting block is provided on each of the two opposite sides of the inner wall of the mounting groove away from the mounting hole. The distance between the two limiting blocks is consistent with the outer diameter of the connecting cylinder.

[0010] The second fixing part is located on the side of the mounting hole away from the mounting groove. The second fixing part is provided with a third through hole, which communicates with the mounting hole. The diameter of the third through hole gradually decreases outward from the end connected to the mounting hole.

[0011] Furthermore, the connecting cylinder has two symmetrical protrusions on the radial sides of one end with the limiting groove, and an annular protrusion extending vertically outward from the circumference of the other end of the connecting cylinder. When the end of the connecting cylinder is fixed in the mounting groove, the lower surface of the protrusion abuts against the bottom of the mounting groove, and the upper surface of the protrusion abuts against the lower surface of the limiting block.

[0012] Furthermore, the diameter of the mounting hole is 8mm-10mm.

[0013] Furthermore, the diameter of the second through hole is 1mm-3mm.

[0014] Furthermore, the diameter of the limiting groove is 11mm-13mm.

[0015] Furthermore, the push rod includes a pressure plate portion, a connecting rod portion connected to the pressure plate portion, and a push plate portion connected to the connecting rod portion, wherein the diameter of the push plate portion is adapted to the diameter of the first through hole.

[0016] Furthermore, it also includes a first seal, which is used to be installed between the bottom of the mounting groove and the end face of the connecting cylinder.

[0017] Furthermore, it also includes a second seal, which is used to be installed between the bottom of the mounting groove and one end face of the spinneret.

[0018] Furthermore, it also includes a third seal, which is used to be installed between the bottom of the limiting groove and the other end face of the spinneret.

[0019] Compared with existing technologies, the advantages of this utility model's spinneret detection device are: simple structure, convenient operation, intuitive detection, low cost, and high applicability. Specifically, the fixed base is provided with an installation groove and an installation hole, and the connecting tube is provided with a second through hole and a limiting groove. When the end of the connecting tube with the limiting groove is located in the installation groove, the installation hole, the limiting groove, and the second through hole are connected to form a fixed space that fits the spinneret, thereby achieving a stable fixation of the spinneret. In the actual detection process, when the second fixing part is aligned and inserted into the transparent detection barrel containing anhydrous ethanol, the airflow in the first through hole of the connecting tube can enter the anhydrous ethanol through the second through hole, the small flow channel of the spinneret, the installation hole, and the third through hole on the second fixing part. Thus, the number and size of bubbles in the transparent detection barrel per unit time can be observed to intuitively determine whether the spinneret is abnormal. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the spinneret detection device of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the spinneret detection device of this utility model;

[0022] Figure 3 This is an exploded schematic diagram of the spinneret detection device of this utility model;

[0023] Figure 4 This is a structural diagram of the fixed base in the spinneret detection device of this utility model from a first perspective.

[0024] Figure 5 This is a structural diagram of the fixed base in the spinneret detection device of this utility model from a second perspective.

[0025] Figure 6 This is a structural diagram of the connecting cylinder in the spinneret detection device of this utility model from a first-view perspective;

[0026] Figure 7 This is a structural diagram of the connecting cylinder in the spinneret detection device of this utility model from a second perspective.

[0027] The above-mentioned figures include the following reference numerals: 10-fixed base; 11-first fixing part; 12-second fixing part; 13-limiting block; 101-mounting groove; 102-mounting hole; 103-third through hole; 20-connecting cylinder; 21-protrusion; 22-annular protrusion; 201-first through hole; 202-second through hole; 203-limiting groove; 31-first seal; 32-second seal; 33-third seal; 40-push rod; 41-pressure plate part; 42-connecting rod part; 43-push plate part; 50-spinneret.

[0028] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Please see Figures 1 to 7The diagram shows a spinneret detection device according to the present invention, comprising a fixed base 10, a connecting cylinder 20, and a push rod 40 adapted to the connecting cylinder 20. The fixed base 10 is provided with a mounting groove 101 and a mounting hole 102 communicating with the mounting groove 101, the axes of the mounting groove 101 and the mounting hole 102 being coincident. Specifically, the fixed base 10 includes a first fixing part 11 and a second fixing part 12. The first fixing part 11 is provided with a mounting groove 101 and a mounting hole 102. A limiting block 13 is provided on each of the two opposite sides of the inner wall of the end of the mounting groove 101 away from the mounting hole 102. The distance between the two limiting blocks 13 is consistent with the outer diameter of the connecting cylinder 20, and the side of the limiting block 13 facing away from the circumferential outer wall of the first fixing part 11 is an arc surface structure, which is adapted to the circumferential outer wall of the connecting cylinder 20. The design of the two limiting blocks 13 can play a precise guiding and lateral limiting role when the connecting cylinder 20 is installed on the fixed seat 10, ensuring that the connecting cylinder 20 can smoothly enter the mounting groove 101 and be accurately aligned, avoiding the skewness of the connecting cylinder 20 during installation, ensuring the alignment of the axes of subsequent components, and improving the overall assembly accuracy of the device.

[0033] The second fixing part 12 is used to cooperate with a transparent testing container (not shown). The transparent testing container is filled with anhydrous ethanol to detect the air permeability of the spinneret 50. In this embodiment, the second fixing part 12 is located on the side of the mounting hole 102 away from the mounting groove 101. The second fixing part 12 is provided with a third through hole 103, which communicates with the mounting hole 102. The diameter of the third through hole 103 gradually decreases from the end connected to the mounting hole 102 towards the direction away from the mounting hole 102. This gradual through hole design can play a good guiding and accelerating role during airflow transmission, allowing the airflow to enter the anhydrous ethanol more concentratedly, which is convenient for bubble observation. More specifically, in this embodiment, the second fixing part 12 is a frustum structure, and the large end of the frustum structure is integrally connected to the bottom end face of the first fixing part 11. The design of the frustum structure can facilitate the guiding insertion into the fixing hole on the transparent testing container.

[0034] Furthermore, the diameter of the mounting hole 102 is 8mm-10mm. As a specific example, in this embodiment, the diameter of the mounting hole 102 is 9mm.

[0035] The connecting cylinder 20 is provided with a first through hole 201, a second through hole 202 communicating with the first through hole 201, and a limiting groove 203 communicating with the second through hole 202. The inner wall of the first through hole 201 is slidably connected to the push rod 40. The limiting groove 203 is provided on the end face of one end of the connecting cylinder 20 along the axial direction. When the end face of the connecting cylinder 20 with the limiting groove 203 is inserted into the mounting groove 101 until the lower surface of the protrusion 21 contacts the bottom of the mounting groove 101, the mounting hole 102, the limiting groove 203, and the first through hole 201 are connected. A fixed space is formed by connecting the two ends of the spinneret 50 for mounting and fixing the spinneret 50. The design of this fixed space can closely fit the shape of the spinneret 50, so that after the spinneret 50 is installed, both ends of the spinneret 50 are in close contact with the bottom of the mounting groove 101 and the bottom of the limiting groove 203 through the second sealing element 32 and the third sealing element 33, respectively. This not only enhances the fixing effect of the spinneret 50, but also eliminates gaps through the elastic deformation of the sealing elements, ensuring sealing and avoiding the impact of shaking or displacement on the accuracy of the test results.

[0036] Furthermore, the diameter of the second through hole 202 is 1mm-3mm. As a specific example, in this embodiment, the diameter of the second through hole 202 is 2mm, and the total axial length of the second through hole 202 is 10mm. In practical applications, the second through hole 202 can be designed to form a gradual transition with the inlet end of the spinneret 50's fine flow channel to avoid turbulence caused by abrupt changes in the airflow cross-section.

[0037] Furthermore, the diameter of the groove 203 is 11mm-13mm. As a specific example, in this embodiment, the diameter of the groove 203 is 12mm and the depth of the groove 203 is 3mm, to adapt to the spinneret standard part used in this embodiment, in which the inner diameter of the inlet end of the fine flow channel is 0.19mm and the inner diameter of the outlet end is 0.13mm.

[0038] Furthermore, the connecting cylinder 20 has two symmetrically arranged protrusions 21 on the radial sides of one end with a limiting groove 203, and an annular protrusion 22 extending vertically outward from the circumference of the other end of the connecting cylinder 20. When the end of the connecting cylinder 20 is fixed in the mounting groove 101, the lower surface of the protrusion 21 abuts against the bottom of the mounting groove 101, and the upper surface of the protrusion 21 abuts against the lower surface of the limiting block 13, so as to achieve axial limiting of the connecting cylinder 20. Combined with the lateral limiting of the connecting cylinder 20 by the limiting block 13, a double fixation of the connecting cylinder 20 in the axial and radial directions is formed in the mounting groove 101, so that the connecting cylinder 20 is stable and reliable after installation, effectively preventing detection errors caused by loosening of the connecting cylinder 20 during the detection process, and further ensuring the accuracy and stability of the spinneret detection.

[0039] The push rod 40 includes a pressure plate part 41, a connecting rod part 42 connected to the pressure plate part 41, and a push plate part 43 connected to the connecting rod part 42. The diameter of the push plate part 43 is adapted to the diameter of the first through hole 201 so that the push rod 40 can apply force evenly during operation. By sliding the push plate part 43 in the first through hole 201, the airflow in the connecting tube 20 is effectively pushed into the small flow channel of the spinneret 50 and the interior of the transparent detection barrel, ensuring the stability and controllability of airflow transmission during the detection process.

[0040] The spinneret detection device of this application also includes a first sealing element 31, which is used to install between the bottom of the mounting groove 101 and the end face of the connecting cylinder 20. It can effectively prevent airflow or detection medium from leaking from the connection between the mounting groove 101 and the connecting cylinder 20 during the detection process, and ensure the sealing of the detection environment.

[0041] The spinneret detection device of this application also includes a second seal 32, which is used to be installed between the bottom of the mounting groove 101 and one end face of the spinneret 50, further enhancing the sealing between the spinneret 50 and the fixed seat 10, and avoiding deviations in the detection results due to gaps between the spinneret 50 and the fixed seat 10.

[0042] The spinneret detection device of this application also includes a third seal 33, which is installed between the bottom of the limiting groove 203 and the other end face of the spinneret 50. The third seal 33 works together with the first seal 31 and the second seal 32 to ensure the sealing of the spinneret 50 in a fixed space from all directions, prevent leakage of the detection medium from multiple angles, provide a reliable sealing environment for spinneret detection, and improve the accuracy and precision of the detection.

[0043] As a specific example, in this embodiment, the first seal 31, the second seal 32 and the third seal 33 are all O-rings, and the spinneret 50 has placement grooves at both ends of its axial direction for placing the second seal 32 or the third seal 33.

[0044] In practical applications, the working principle of the spinneret detection device of this application can be as follows:

[0045] First, place the second seal 32 and the third seal 33 in the two placement slots at both ends of the spinneret 50, respectively. Then, insert the end of the spinneret 50 with the second seal 32 into the mounting hole 102 of the fixing seat 10. Next, the end of the connecting cylinder 20 with the limiting groove 203 is inserted into the mounting groove 101. Specifically, the two protrusions 21 on the connecting cylinder 20 are inserted into the gaps formed between the ends of the two limiting blocks 13. When the end of the connecting cylinder 20 with the limiting groove 203 is inserted into the mounting groove 101 until the lower surface of the protrusion 21 contacts the bottom of the mounting groove 101, the connecting cylinder 20 is rotated so that the entire protrusion 21 is completely below the limiting block 13. At this time, the lower surface of the protrusion 21 abuts against the bottom of the mounting groove 101, the upper surface of the protrusion 21 abuts against the lower surface of the limiting block 13, and the arc structure of the limiting block 13 is tightly fitted with the circumferential outer wall of the connecting cylinder 20. This achieves dual restriction on the axial and radial movement of the connecting cylinder 20, ensuring the connection stability between the connecting cylinder 20 and the fixed seat 10. Meanwhile, part or all of the inner wall of the fixed space formed by the second through hole 202, the limiting groove 203 and the mounting hole 102 will fit against the corresponding circumferential outer wall on the spinneret 50, thereby achieving the fixed installation of the spinneret 50.

[0046] Next, the second fixing part 12 is aligned and inserted into the fixing hole on the transparent testing barrel, which is filled with anhydrous ethanol, so that the second fixing part is covered by anhydrous ethanol. Then, the push plate part 43 in the push rod 40 is inserted into the first through hole 201 in the connecting tube 20, and the pressure plate part 41 is pressed at a uniform speed, so that the push plate part 43 moves along the first through hole 201 toward the second through hole 202. During the movement of the push plate part 43, the space inside the connecting tube 20 is compressed, so that the airflow inside the connecting tube 20 is pushed into the anhydrous ethanol inside the transparent testing barrel through the passage formed by the second through hole 202, the small flow channel of the spinneret 50, the mounting hole 102 and the third through hole 103. Since the first seal 31 seals the gap between the connecting tube 20 and the bottom of the mounting groove 101, and the second seal 32 and the third seal 33 seal the gap between the spinneret 50 and the bottom of the groove, the airflow can only flow along the above passage and no leakage will occur. The abnormality of the spinneret 50 is determined by observing the changes in the number and size of bubbles in anhydrous ethanol per unit time: compared with the number and size of bubbles appearing per unit time in the transparent test barrel of the standard spinneret, if the difference in the number and size of bubbles appearing per unit time in the transparent test barrel is small, then the spinneret 50 tested is not blocked or has a slight blockage, and is judged as normal; if the number of bubbles appearing per unit time in the transparent test barrel decreases and the bubble size decreases significantly, then the spinneret 50 tested is severely blocked, and is judged as abnormal.

[0047] Compared with existing technologies, the advantages of this utility model's spinneret detection device are: simple structure, convenient operation, intuitive detection, low cost, and high applicability. Specifically, the fixed base is provided with an installation groove and an installation hole, and the connecting tube is provided with a second through hole and a limiting groove. When the end of the connecting tube with the limiting groove is located in the installation groove, the installation hole, the limiting groove, and the second through hole are connected to form a fixed space that fits the spinneret, thereby achieving a stable fixation of the spinneret. In the actual detection process, when the second fixing part is aligned and inserted into the transparent detection barrel containing anhydrous ethanol, the airflow in the first through hole of the connecting tube can enter the anhydrous ethanol through the second through hole, the small flow channel of the spinneret, the installation hole, and the third through hole on the second fixing part. Thus, the number and size of bubbles in the transparent detection barrel per unit time can be observed to intuitively determine whether the spinneret is abnormal.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A spinneret detection device, characterized by, It includes a fixed base, a connecting cylinder, and a push rod adapted to the connecting cylinder. The fixed base is provided with a mounting groove and a mounting hole communicating with the mounting groove. The axis of the mounting groove and the mounting hole coincide. The connecting cylinder is provided with a first through hole, a second through hole communicating with the first through hole, and a limiting groove communicating with the second through hole. The inner wall of the first through hole is slidably connected to the push rod. The limiting groove is provided on the end face of one end of the connecting cylinder in the axial direction. When the end face of the connecting cylinder with the limiting groove abuts against the bottom of the mounting groove, the mounting hole, the limiting groove and the first through hole communicate to form a fixed space for installing and fixing the spinneret.

2. The spinneret detection apparatus of claim 1, wherein The fixing base includes a first fixing part and a second fixing part. The first fixing part is provided with the mounting groove and the mounting hole. A limiting block is provided on each of the two opposite sides of the inner wall of the end of the mounting groove away from the mounting hole. The distance between the two limiting blocks is consistent with the outer diameter of the connecting cylinder. The second fixing part is located on the side of the mounting hole away from the mounting groove. The second fixing part is provided with a third through hole, which communicates with the mounting hole. The diameter of the third through hole gradually decreases outward from the end connected to the mounting hole.

3. The spinneret detection apparatus of claim 2, wherein The connecting cylinder has two symmetrical protrusions on both radial sides of one end with the limiting groove, and an annular protrusion extends vertically outward from the circumference of the other end of the connecting cylinder.

4. The spinneret detection apparatus of claim 1, wherein The diameter of the mounting hole is 8mm-10mm.

5. The spinneret detection apparatus of claim 1, wherein The diameter of the second through hole is 1mm-3mm.

6. The spinneret detection apparatus of claim 1, wherein The diameter of the limiting groove is 11mm-13mm.

7. The spinneret detection apparatus of claim 1, wherein The push rod includes a pressure plate portion, a connecting rod portion connected to the pressure plate portion, and a push plate portion connected to the connecting rod portion. The diameter of the push plate portion is adapted to the diameter of the first through hole.

8. The spinneret detection apparatus of claim 1, wherein It also includes a first seal, which is used to be installed between the bottom of the mounting groove and the end face of the connecting cylinder.

9. The spinneret detection device according to claim 1, characterized in that, It also includes a second seal, which is used to be installed between the bottom of the mounting groove and one end face of the spinneret.

10. The spinneret detection apparatus of claim 9, wherein It also includes a third seal, which is used to be installed between the bottom of the limiting groove and the other end face of the spinneret.

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