Nanofiber non-woven fabric wiredrawing cooling system

Abstract

The invention discloses a nanofiber non-woven fabric wiredrawing cooling system, and relates to the technical field of non-woven fabric production equipment, the nanofiber non-woven fabric wiredrawing cooling system comprises a vertically arranged silk yarn channel box, a spinneret plate is fixed on the top of the silk yarn channel box, and the side surface of the silk yarn channel box is fixedly communicated with an air inlet box; a connecting opening communicated with the air inlet box is formed in the side face of the silk yarn channel box, a shielding plate is movably installed in the connecting opening, an air inlet is formed in the middle of the shielding plate, and the shielding plate is connected with the bottom face of the connecting opening through a lifting device. The position of the air inlet is changed by changing the height position of the baffle plate, the baffle plate with the air inlet is arranged at the position of the connecting port for communicating the silk yarn channel box with the air inlet box, and the lifting device is additionally arranged between the baffle plate and the connecting port, so that adjustment can be performed according to actual requirements; and the position flexibility of the air blowing opening is improved.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric production equipment technology, specifically a nanofiber nonwoven fabric filament cooling system. Background Technology

[0002] Nanofiber nonwoven fabric refers to nonwoven fabric composed of ultrafine fibers with diameters at the nanoscale. The main production processes of nanofiber nonwoven fabric are heating, filtering, drawing, cooling, web forming, and pressing. Among these processes, cooling is the key step in transforming the drawn filaments from a molten liquid state to a solid state. Specifically, during the spinning process, polymer melt or concentrated solution is sprayed vertically downward from the spinneret holes of the spinneret at a certain flow rate to form filaments. Once the filaments are stretched to the required fineness, they need to be cooled and solidified in a timely manner through a corresponding cooling system.

[0003] Existing cooling systems typically use cold air blowing, which can be categorized into two types based on the direction of airflow: side blowing and vertical blowing. Vertical blowing refers to the cold air being parallel to the length of the filament, while side blowing refers to the cold air blowing perpendicularly to the filament or at a certain angle. The choice is usually made based on the actual situation. For example, when the number of filaments is small, the simpler side blowing method is chosen.

[0004] In reality, the arrangement of the side-blowing nozzles is such that the filaments are arranged vertically, the spinneret is located at the top of the filaments, and the side-blowing nozzles are located on the side of the filaments. The side-blowing nozzles generate airflow perpendicular to the filaments. However, in actual production, it has been found that, without affecting the surface temperature of the spinneret, the closer the nozzle is to the spinneret surface, the lower the filament breakage rate and the higher the birefringence of the wound filament. On the other hand, the farther the nozzle is from the spinneret surface, the higher the filament tensile strength. The existing cold air blower nozzle positions are fixed, which is not flexible and cannot be adjusted according to actual needs. Therefore, we propose a new technical solution. Summary of the Invention

[0005] The purpose of this invention is to provide a nanofiber nonwoven fabric cooling system to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A nanofiber nonwoven fabric cooling system includes a vertically arranged yarn channel box. A spinneret is fixed to the top of the yarn channel box, and an air inlet box is fixedly connected to the side of the yarn channel box. A connection port communicating with the air inlet box is opened on the side of the yarn channel box. A baffle plate is movably installed in the connection port. An air inlet is opened in the middle of the baffle plate. The bottom surface of the baffle plate and the connection port are connected by a lifting device. The lifting device changes the position of the air inlet by changing the height of the baffle plate.

[0008] Preferably, the inner contour surface of the connection port is provided with a frame-shaped groove that is compatible with the baffle plate, and the baffle plate can reciprocate in the vertical direction of the frame-shaped groove.

[0009] Preferably, the lifting device includes a cylindrical roller rotatably mounted at the bottom of the frame groove, with spiral grooves formed at both ends of the cylindrical roller, and connecting blocks fixed to the baffle plate at both ends of the cylindrical roller, with rotating columns rotatably mounted on the connecting blocks to slide and adapt to the grooves.

[0010] Preferably, one end of the cylindrical roller is coaxially fixed with an extension rod extending out of the wire guide box, and the end of the extension rod is fixed with a handle.

[0011] Preferably, a perforated plate is fixedly sealed on the air inlet, and the perforated plate can rectify the airflow passing through the air inlet.

[0012] Preferably, the perforated plate includes a plate body, on which a plurality of vertically distributed elongated holes are formed, and the elongated holes are evenly distributed in a rectangular array on the plate body.

[0013] Preferably, a mounting frame is provided on one side of the perforated plate, and a sealing strip capable of partially covering the elongated holes is fixed in the mounting frame. The mounting frame is connected to the cylindrical roller through a transmission assembly. When the cylindrical roller rotates in the reverse direction, the sealing strip changes the covering area of ​​the elongated holes.

[0014] Preferably, each of the elongated holes is provided with a protruding rod, and one end of each protruding rod is fixed to the sealing strip.

[0015] Preferably, an elastic sealing strip is affixed between the shield and the wall of the wire tunnel box, and the elastic sealing strip can cover and seal the gap between the shield and the wire tunnel box.

[0016] Preferably, the transmission assembly includes a turntable rotatably mounted on a connecting block, the edge of the turntable meshing with a cylindrical roller in a one-way transmission, a one-way gear coaxially fixed on the cylindrical roller and meshing with the turntable in a one-way direction, a connecting rod eccentrically connected to the turntable, the top end of the connecting rod being hinged to the frame of the mounting frame, and the turntable rotating only when the cylindrical roller rotates in the reverse direction.

[0017] In the above technical solution, the present invention provides a nanofiber nonwoven fabric cooling system, which has an air inlet baffle at the connection port connecting the yarn channel box and the air inlet box, and a lifting device is installed between the baffle and the connection port. The lifting device adjusts the position of the air inlet by changing the height of the baffle, thereby improving the flexibility of the air outlet position according to actual needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the filament channel box and air inlet box of a nanofiber nonwoven fabric cooling system according to the present invention.

[0020] Figure 2 This is a schematic diagram of the connection port of the nanofiber nonwoven fabric cooling system of the present invention on the side of the air inlet box;

[0021] Figure 3 This is a cross-sectional schematic diagram of the frame-shaped groove in the connection port of a nanofiber nonwoven fabric cooling system according to the present invention;

[0022] Figure 4 This is a schematic diagram of the elastic sealing strip of a nanofiber nonwoven fabric cooling system of the present invention between the air inlet box and the baffle plate.

[0023] Figure 5 This is a schematic diagram of the lifting device structure of a nanofiber nonwoven fabric cooling system according to the present invention;

[0024] Figure 6 This is a schematic diagram of the first state of the sealing strip covering and blocking the elongated hole in the nanofiber nonwoven fabric cooling system of the present invention;

[0025] Figure 7 This is a schematic diagram of the second state of the sealing strip covering and blocking the elongated hole in the nanofiber nonwoven fabric cooling system of the present invention;

[0026] Figure 8 This is a schematic diagram of the third state of the sealing strip covering and blocking the elongated hole in the nanofiber nonwoven fabric cooling system of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Wire channel box; 2. Spinneret; 3. Air inlet box; 4. Connection port; 5. Baffle plate; 6. Air inlet; 7. Lifting device; 8. Frame groove; 9. Elastic sealing strip; 10. Cylindrical roller; 11. Track groove; 12. Connecting block; 13. Rotating column; 14. Extension rod; 15. Handle; 16. Perforated plate; 16.1. Plate body; 16.2. Long slot; 16.3. Protruding rod; 17. Mounting frame; 18. Sealing strip; 19. Transmission assembly; 19.1. Turntable; 19.2. Connecting rod; 20. One-way gear. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Please see Figures 1-8 The present invention provides a nanofiber nonwoven fabric cooling system, including a vertically arranged yarn channel box 1, a spinneret 2 fixed on the top of the yarn channel box 1, an air inlet box 3 fixedly connected to the side of the yarn channel box 1, a connection port 4 connected to the air inlet box 3 on the side of the yarn channel box 1, a baffle plate 5 movably installed in the connection port 4, an air inlet 6 in the middle of the baffle plate 5, and a lifting device 7 connecting the bottom surface of the baffle plate 5 and the connection port 4. The lifting device 7 changes the position of the air inlet 6 by changing the height of the baffle plate 5.

[0031] Specifically, the thread channel box 1 is a rectangular box, and the thread passes vertically through the interior of the thread channel box 1. The air intake box 3 is a pressure stabilizing box, which stabilizes the airflow. The air intake end of the pressure stabilizing box is connected to a cooling system, a filtration system, and a blower system in sequence. The blower system filters the generated airflow through the filtration system, and then the airflow is cooled by heat exchange through the cooling system before entering the air intake box 3. The edge contour surface of the connection port 4 is rectangular, the surface of the baffle plate 5 is perpendicular to the horizontal plane, and the air intake 6 is also rectangular. The edge of the air intake 6 is perpendicular to the baffle plate 5. The edges of the baffle 5 are parallel, and the lifting device 7 can be raised and lowered vertically. When the lifting device 7 is raised, it causes the baffle 5 to move upward relative to the spinneret 2. At this time, the air inlet 6 is closer to the spinneret 2, which helps to reduce the breakage rate of the yarn. Similarly, when the lifting device 7 is lowered, it causes the baffle 5 to move downward relative to the spinneret 2. At this time, the air inlet 6 is further away from the spinneret 2, which helps to increase the back stretch of the yarn. In practical applications, it can be adjusted according to actual needs, which improves the flexibility of the air outlet position.

[0032] In another embodiment of the present invention, a frame-shaped groove 8 is provided on the inner contour surface of the connection port 4 to engage and fit with the baffle plate 5. The trajectory line of the frame-shaped groove 8 forms an annular structure along the inner contour surface of the connection port 4. The baffle plate 5 can reciprocate vertically in the frame-shaped groove 8. Preferably, an elastic sealing strip 9 is attached between the baffle plate 5 and the wall of the wire passage box 1. The elastic sealing strip 9 can cover and seal the gap between the baffle plate 5 and the wire passage box 1. The elastic sealing strip 9 is flexible. The width of the elastic sealing strip 9 is much larger than the gap width between the baffle plate 5 and the wire channel box 1, thereby preventing the baffle plate 5 from pulling on the elastic sealing strip 9 during operation. The elastic sealing strip 9 is preferably a frame-shaped structure that matches the outline of the baffle plate 5. In actual use, the elastic sealing strip 9 seals the gap between the baffle plate 5 and the wire channel box 1, preventing airflow from entering the gap between the baffle plate 5 and the wire channel box 1, and also preventing interference with the airflow of the air inlet 6.

[0033] In another embodiment of the present invention, the lifting device 7 includes a cylindrical roller 10 rotatably mounted at the bottom of the frame-shaped groove 8. The axis of the cylindrical roller 10 is parallel to the horizontal plane. Both ends of the cylindrical roller 10 are provided with spiral track grooves 11. There are two spiral track grooves 11 on the same end face of the cylindrical roller 10. The two spiral track grooves 11 are symmetrically distributed on the same end face of the cylindrical roller 10. The two spiral track grooves 11 form a groove structure connected end to end. Both ends of the cylindrical roller 10 are provided with connecting blocks 12 fixed to the baffle plate 5. Rotating columns 13 that are rotatably mounted on the connecting blocks 12 and are slidably adapted to the track grooves 11 are provided. The axis of the rotating column 13 is parallel to the axis of the cylindrical roller 10. Furthermore, one end of the cylindrical roller 10 is coaxially fixed with an extension rod 14 extending out of the wire passage box 1. The end of the extension rod 14 is fixed with a handle 15.

[0034] In practical use, when it is necessary to reduce the distance between the air inlet 6 and the spinneret 2, the lifting device 7 needs to be raised. Specifically, by driving the extension rod 14 through the handle 15, the cylindrical roller 10 rotates in the forward direction. At this time, the rotating column 13 can slide relative to the track groove 11. For example, the rotating column 13 moves from point A to point B in the track groove 11. Under the support of the groove wall of the track groove 11, the rotating column 13 rises relatively in the vertical height, which in turn causes the rotating column 13 to drive the baffle plate 5 to move upward in the vertical direction through the connecting block 12. This changes the vertical position of the baffle plate 5, causing it to move upward relative to the spinneret 2. At this time, the distance between the air inlet 6 and the spinneret 2 is closer. Similarly, by driving the extension rod 14 through the handle 15, the cylindrical roller 10 continues to rotate. When rotating in the forward direction, the rotating column 13 can slide relative to the track groove 11. For example, if the rotating column 13 moves from point B to point A in the track groove 11, under the support of the groove wall, the rotating column 13 drives the baffle plate 5 to move downward in the vertical direction through the connecting block 12, thereby changing the vertical position of the baffle plate 5. The baffle plate 5 moves downward relative to the spinneret 2, and the air inlet 6 is further away from the spinneret 2. In other words, in practical applications, the handle 15 can be continuously cranked in the same direction to adjust the height of the baffle plate 5 in the vertical direction, thereby controlling the position of the air inlet 6. It should be further noted that transparent observation windows are provided on the sides of the yarn passage box 1, through which the height position of the baffle plate 5 can be clearly seen. The observation windows are existing technology and will not be described in detail.

[0035] In another embodiment of the present invention, a perforated plate 16 is fixedly sealed on the air inlet 6. The perforated plate 16 can rectify the airflow passing through the air inlet 6, making the airflow more uniform. Further, the perforated plate 16 includes a plate body 16.1, the surface of which is fixedly attached to the surface of the baffle plate 5, completely covering the air inlet 6. Multiple vertically distributed elongated holes 16.2 are formed on the plate body 16.1, and these holes are evenly distributed in a rectangular array. A mounting frame 17 is provided on one side of the perforated plate 16, located inside the air inlet 6. The mounting frame 17 can reciprocate vertically within the air inlet 6. Selected, the inner wall of the air inlet 6 is provided with a sliding groove that is adapted to the sliding of the mounting frame 17. The sliding groove can ensure that the trajectory of the mounting frame 17 reciprocating in the vertical direction of the air inlet 6 is a linear trajectory. The frame opening surface of the mounting frame 17 is parallel to the plate surface of the plate 16.1. A sealing strip 18 that can partially cover the elongated hole 16.2 is fixed inside the mounting frame 17. The length direction line of each sealing strip 18 is parallel to the horizontal plane. The width of the sealing strip 18 is less than the maximum length of the elongated hole 16.2. Each sealing strip 18 is in contact with the plate 16.1. The mounting frame 17 is connected to the cylindrical roller 10 through the transmission assembly 19. When the cylindrical roller 10 rotates in the reverse direction, the sealing strip 18 changes the covering area of ​​the elongated hole 16.2.

[0036] For example, refer to the accompanying drawings in the specification. Figure 6 This is the first state where the sealing strip 18 covers and seals the elongated hole 16.2, and the elongated hole 16.2 is in its most open state; refer to the attached diagram in the instruction manual. Figure 7 This is the second state where the sealing strip 18 covers and seals the elongated hole 16.2, and the elongated hole 16.2 is in its minimum open state; refer to the attached diagram in the instruction manual. Figure 8 At this point, the sealing strip 18 is in the third state of covering and blocking the elongated hole 16.2, and the elongated hole 16.2 is in another minimum open state. In both the second and third states, the open area of ​​the elongated hole 16.2 during ventilation remains unchanged. Therefore, in actual use, the flow resistance and uniformity of airflow can be controlled by switching the state of the sealing strip 18 covering and blocking the elongated hole 16.2 between the second and third states according to the actual needs of airflow, thus meeting the actual needs of the wire cooling process. In addition, the ventilation area of ​​the elongated hole 16.2 can also be controlled by switching the state of the sealing strip 18 covering and blocking the elongated hole 16.2 between the first and second states according to the needs.

[0037] The transmission assembly 19 includes a turntable 19.1 rotatably mounted on the connecting block 12. The surface of the turntable 19.1 is perpendicular to the extended surface of the perforated plate 16. The edge of the turntable 19.1 engages with the cylindrical roller 10 in a one-way transmission. Preferably, the turntable 19.1 is a gear disc. A one-way gear 20, which engages with the turntable 19.1 in a one-way transmission, is coaxially fixed on the cylindrical roller 10. A connecting rod 19.2 is eccentrically and movably connected to the turntable 19.1. The top end of the connecting rod 19.2 is movably hinged to the frame of the mounting frame 17. At this time, the turntable 19.1... The connecting rod 19.2 and the mounting frame 17, which can reciprocate linearly along the slide groove, together constitute the crank-slider structure. When the cylindrical roller 10 rotates in the reverse direction, the turntable 19.1 can rotate. When the turntable 19.1 rotates, it drives the mounting frame 17 to move through the connecting rod 19.2, thereby realizing the vertical movement of the mounting frame 17 relative to the plate 16.1. When the mounting frame 17 moves, it drives the sealing strip 18 to change the coverage area of ​​the elongated hole 16.2.

[0038] In practical applications, when it is necessary to adjust the distance between the air inlet 6 and the spinneret 2, simply rotate the cylindrical roller 10 continuously in the forward direction. When it is necessary to adjust the blocking state of the baffle 18 on the elongated hole 16.2, simply rotate the cylindrical roller 10 continuously in the reverse direction. It should be noted that after each adjustment of the blocking state of the baffle 18 on the elongated hole 16.2, it is necessary to rotate the roller 10 by the same angle in both the forward and reverse directions to restore the air inlet 6 to its original state. For example, when the cylindrical roller 10 deflects 10 units in the reverse direction, the blocking state of the baffle 18 on the elongated hole 16.2 changes. At the same time, the height position of the air inlet 6 also changes accordingly, for example, the height position of the air inlet 6 changes from position C to position D. Then, the cylindrical roller 10 is rotated 10 units in the forward direction, so that the air inlet 6 returns to its original state, for example, the height position of the air inlet 6 returns from position D to position C. On the other hand, since the turntable 19.1 can only rotate when the cylindrical roller 10 rotates in the reverse direction, the turntable 19.1 remains unchanged during the 10 units in the forward direction rotation of the cylindrical roller 10. Therefore, the blocking state of the baffle 18 on the elongated hole 16.2 is not affected. Thus, by simply rotating the cylindrical roller 10 in both directions, the height position of the air inlet 6 and the blocking state of the baffle 18 on the elongated hole 16.2 can be adjusted.

[0039] In another embodiment of the present invention, each elongated hole 16.2 is provided with a protruding rod 16.3, one end of each protruding rod 16.3 is fixed to the sealing strip 18, and the rod of the protruding rod 16.3 is perpendicular to the sealing strip 18. In actual use, when the sealing strip 18 moves, the protruding rod 16.3 can slide in the elongated hole 16.2 with the movement of the sealing strip 18, which helps to keep the elongated hole 16.2 unobstructed. For example, when fine debris blocks the elongated hole 16.2, the sliding of the protruding rod 16.3 can clear the blockage of the elongated hole 16.2.

[0040] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A nanofiber nonwoven fabric cooling system, comprising a vertically arranged yarn channel box (1), wherein a spinneret (2) is fixed to the top of the yarn channel box (1), and an air inlet box (3) is fixedly connected to the side of the yarn channel box (1), characterized in that, The side of the wire tunnel box (1) is provided with a connection port (4) that communicates with the air inlet box (3). A baffle plate (5) is movably installed in the connection port (4). An air inlet (6) is provided in the middle of the baffle plate (5). The bottom surface of the baffle plate (5) and the connection port (4) are connected by a lifting device (7). The lifting device (7) changes the position of the air inlet (6) by changing the height of the baffle plate (5).

2. The nanofiber nonwoven fabric cooling system according to claim 1, characterized in that, The inner contour surface of the connection port (4) is provided with a frame-shaped groove (8) that is compatible with the baffle plate (5). The baffle plate (5) can reciprocate in the vertical direction of the frame-shaped groove (8).

3. The nanofiber nonwoven fabric cooling system according to claim 2, characterized in that, The lifting device (7) includes a cylindrical roller (10) rotatably mounted at the bottom of the frame groove (8). Both ends of the cylindrical roller (10) are provided with a trajectory groove (11) of a spiral segment. Both ends of the cylindrical roller (10) are provided with a connecting block (12) fixed to the baffle plate (5). A rotating column (13) that is rotatably mounted on the connecting block (12) and slidably adapted to the trajectory groove (11) is mounted on the connecting block (12).

4. The nanofiber nonwoven fabric cooling system according to claim 3, characterized in that, One end of the cylindrical roller (10) is coaxially fixed with an extension rod (14) extending out of the wire guide box (1), and the end of the extension rod (14) is fixed with a handle (15).

5. The nanofiber nonwoven fabric cooling system according to claim 3, characterized in that, A perforated plate (16) is fixedly sealed on the air inlet (6), and the perforated plate (16) can rectify the airflow passing through the air inlet (6).

6. The nanofiber nonwoven fabric cooling system according to claim 5, characterized in that, The perforated plate (16) includes a plate body (16.1), on which a plurality of vertically distributed elongated holes (16.2) are provided, and each elongated hole (16.2) is evenly distributed in a rectangular array on the plate body (16.1).

7. The nanofiber nonwoven fabric cooling system according to claim 6, characterized in that, The perforated plate (16) has a mounting frame (17) on one side. A sealing strip (18) that can partially cover the elongated hole (16.2) is fixed in the mounting frame (17). The mounting frame (17) is connected to the cylindrical roller (10) through a transmission assembly (19). When the cylindrical roller (10) rotates in the opposite direction, the sealing strip (18) changes the area covered by the elongated hole (16.2).

8. The nanofiber nonwoven fabric cooling system according to claim 7, characterized in that, Each of the elongated holes (16.2) is provided with a protruding rod (16.3), and one end of each of the protruding rods (16.3) is fixed to the sealing strip (18).

9. The nanofiber nonwoven fabric cooling system according to claim 8, characterized in that, An elastic sealing strip (9) is pasted between the shielding plate (5) and the wall of the wire tunnel box (1). The elastic sealing strip (9) can cover and seal the gap between the shielding plate (5) and the wire tunnel box (1).

10. A nanofiber nonwoven fabric cooling system according to claim 7, characterized in that, The transmission assembly (19) includes a turntable (19.1) rotatably mounted on a connecting block (12). The edge of the turntable (19.1) meshes with the cylindrical roller (10) in a one-way transmission. A one-way gear (20) that meshes with the turntable (19.1) is coaxially fixed on the cylindrical roller (10). A connecting rod (19.2) is eccentrically connected to the turntable (19.1). The top end of the connecting rod (19.2) is hinged to the frame of the mounting frame (17). The turntable (19.1) can only rotate when the cylindrical roller (10) rotates in the reverse direction.

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