Ultra-fine fiber meltblown filter element production device

Abstract

The present invention relates to the technical field of meltblown filter element production, and discloses a production device for ultra-fine fiber meltblown filter elements. The production device for ultra-fine fiber meltblown filter elements includes: a frame, on which an installation frame capable of position adjustment is provided. A conveying mechanism and a cutting machine are respectively arranged on the installation frame. A central shaft is arranged on the conveying mechanism. A fine fiber nozzle and a coarse fiber nozzle are also arranged on the frame. The fine fiber nozzle is located above the central shaft, and the coarse fiber nozzle is located on one side below the central shaft, so that the coarse and fine fibers will converge and fuse before adhering to the central shaft after being ejected. The production device for ultra-fine fiber meltblown filter elements provided by the present invention enables the coarse and fine fiber filaments ejected by the coarse fiber nozzle and the fine fiber nozzle to not only converge and fuse before adhering to the central shaft, making the combination between the fiber filaments more sufficient, but also be not interfered by the disturbing air flow, thereby ensuring the quality of the meltblown filter element.

Description

Technical Field

[0001] The present invention relates to the technical field of meltblown filter element production, and particularly to a production device for ultra-fine fiber meltblown filter elements. Background Art

[0002] A meltblown filter element is a tubular filter element made of non-toxic and odorless polypropylene particles through processes such as heating and melting, spinning, drawing, and receiving and forming. Meltblown filter elements are generally divided into two types: those with a skeleton and those without a skeleton. A filter element with a skeleton usually has a central axis (inner axis) inside, while a filter element without a skeleton does not have a central axis. Moreover, the production methods of the two types of meltblown filter elements are also different. When producing a filter element with a skeleton, generally, a conveying mechanism is used to convey the central axis (inner axis) so that the central axis rotates circumferentially and moves axially. And during this process, the raw material will first be heated and melted by a screw extruder, then filtered by a melt filter, and finally, fiber filaments are sprayed out through a meltblown head and evenly adhere to the central axis 11 (during this process, a high-temperature and high-speed air flow is provided by an air compressor and an air heater for fiber stretching, and the meltblown head is generally divided into a thick fiber head and a fine fiber head). And after the thick fiber filaments (supporting fibers) are sprayed out, they will be received and transferred to the central axis 11 by a transfer roller and combined with the fine fiber filaments (filtering fibers), thereby forming a tubular filter element with the central axis as the core.

[0003] For example, the US Patent with the publication number US5733581A discloses a device for manufacturing a meltblown filter medium, which discloses: "The device 10 is provided with at least one additional meltblown die 22a, which is arranged in a radially spaced relationship with a conical collection / transfer roller 23". The conical collection / transfer roller 23 is used to receive the supporting fibers sprayed out by the meltblown die 22a and transfer them to the central axis 11 to be combined with the filtering fibers sprayed out by the meltblown die 16a. Since the supporting fibers will first adhere to the collection / transfer roller 23, when the supporting fibers are combined with the filtering fibers, they are combined with the filtering fibers in the form of a surface, and the relationship between the two is a layer-to-layer relationship, resulting in a poor combination effect and insufficient combination between each other. Therefore, it is necessary to propose a production device for ultra-fine fiber meltblown filter elements. Summary of the Invention

[0004] To solve the above technical problems, the production device for ultra-fine fiber meltblown filter elements provided by the present invention includes: a frame, on which an installation frame with adjustable position is provided. A conveying mechanism and a cutting machine are respectively arranged on the installation frame. A central shaft is arranged on the conveying mechanism. A fine fiber nozzle and a thick fiber nozzle are also arranged on the frame. The fine fiber nozzle is located above the central shaft, and the thick fiber nozzle is located on one side below the central shaft, so that the thick and fine fibers will converge and fuse before adhering to the central shaft after being ejected. A negative pressure adsorption mechanism is also arranged on the installation frame to prevent the thick and fine fibers from being disturbed by the airflow and ensure the smooth combination of the two.

[0005] The negative pressure adsorption mechanism includes a rotatable three-way pipe, in which a plug for controlling the ventilation path is slidably installed. Two first air pipes for extending into the central shaft are arranged on the three-way pipe. Telescopic second air pipes are arranged in both of the two first air pipes. Strip-shaped air outlets are arranged on both the first air pipes and the second air pipes. An air suction fan connected to the three-way pipe is arranged at the bottom of the frame, so that the first air pipes and the second air pipes can form negative pressure from inside the central shaft to adsorb the thick and fine fibers that converge after being ejected and the airflow ejected therewith.

[0006] Preferably, a sliding table mechanism is arranged on the frame. The sliding table mechanism includes a sliding frame fixedly installed on the top of the frame. A rotatable first screw rod and a first motor for driving the first screw rod are arranged on the sliding frame. A sliding plate is slidably installed on the sliding frame. An internally threaded block fixedly connected to the sliding plate is threadedly sleeved on the first screw rod. Four first electric push rods distributed in a rectangle are arranged on the sliding plate. The output rods of the four first electric push rods are all fixedly connected to the bottom of the installation frame, so as to adjust the relative positions between the central shaft, the fine fiber nozzle and the thick fiber nozzle.

[0007] Preferably, an iron push ring is slidably sleeved on the first air pipe. A first magnet for driving the iron push ring to move is embedded on the second air pipe. A second magnet for limiting the iron push ring is embedded on the first air pipe. The magnetism of the second magnet is greater than that of the first magnet, so that the second air pipe can push off the cut meltblown filter element through telescoping.

[0008] Preferably, one end of the iron push ring is fixedly connected with a telescopic corrugated sleeve, and the other end of the telescopic corrugated sleeve is fixedly connected with the first air pipe. When the central shaft has not been sleeved on the first air pipe after being cut, the iron push ring can drive the telescopic corrugated sleeve to seal the strip-shaped air outlet on the first air pipe, so as to avoid the diversion of the suction force of the second air pipe part.

[0009] Preferably, a plug cover is rotatably installed at one end of the second air duct, and the plug cover is in sliding contact with the inner wall of the central shaft. This can not only be used to stabilize the central shaft, but also seal the gap between the second air duct and the central shaft, thereby ensuring the adsorption force in the area of the second air duct.

[0010] Preferably, the conveying mechanism includes an outer cylinder fixedly connected to the mounting frame. Three slightly inclined conveyor wheels are rotatably installed in the outer cylinder, and three second motors for driving the conveyor wheels are arranged in the outer cylinder, so as to drive the central shaft to axially move and circumferentially rotate.

[0011] Preferably, a roller frame for supporting the central shaft is arranged on the mounting frame, so as to stabilize and support the central shaft.

[0012] Preferably, a shaft frame is arranged on the mounting frame. The three-way pipe passes through the shaft frame and is rotatably connected to the shaft frame. A third motor for driving the three-way pipe to rotate is fixedly installed on the shaft frame.

[0013] Preferably, an internally threaded pipe is fixedly installed in the second air duct, a second screw rod is rotatably installed in the first air duct, one end of the second screw rod extends into the internally threaded pipe and is threadedly connected to the internally threaded pipe, and a fourth motor for driving the second screw rod is also arranged in the first air duct, so that the second air duct can be telescoped as required.

[0014] Preferably, a curved pipe is rotatably installed on the three-way pipe, and one end of the curved pipe and the air suction port of the air suction fan are connected by the same corrugated pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In the present invention, the transfer roller in the traditional meltblown equipment is removed, the fine fiber nozzle is arranged above the central shaft, and the wind force sprayed by the fine fiber nozzle is increased as required. Then the coarse fiber nozzle is arranged on the lower side of the central shaft, and the nozzle of the coarse fiber nozzle is inclined upward, so that when performing the fiber spraying operation, it forms an intersection and confluence with the fine fiber nozzle, and is directly intertwined and combined, making the combination of coarse and fine fibers more sufficient and thorough. At the same time, in addition to the advantage of making the combination of coarse and fine fibers more sufficient, when the airflows sprayed by the fine fiber nozzle and the coarse fiber nozzle intersect, the fine fibers and the coarse fibers are already in an intertwined and combined state, so that the disturbing airflows generated when the two airflows intersect have a lower impact on the meltblown forming work. Moreover, the central shaft can be adjusted up, down, left and right through the slide table mechanism, so as to adjust the relative positions between the central shaft and the fine fiber nozzle and the coarse fiber nozzle, so as to adapt to different production requirements and improve the applicability of the entire equipment;

[0017] By setting a negative pressure adsorption mechanism composed of a three-way pipe, a first air duct, a second air duct, a suction fan and other structures on the meltblown equipment, it enables the central axis to generate negative pressure from the inside and generate suction, so that after the thick and fine fibers are ejected, they can be more smoothly attached to the central axis under the influence of the suction, and the generated suction can also eliminate the air flow ejected by the fine fiber nozzle and the thick fiber nozzle, avoiding the disturbance of the air flow when it impacts on the central axis and affecting the subsequent attachment of the fibers, further ensuring that the fibers are not affected by the disturbed air flow and ensuring uniform meltblowing;

[0018] In order to enable the negative pressure adsorption mechanism to perfectly adapt to the meltblown device and solve the problem that the central axis cannot be normally loaded or unloaded after installing the negative pressure adsorption mechanism, this application sets the negative pressure adsorption mechanism at the discharge end of the central axis and adopts a scheme of rotating and alternating two groups of the first air duct and the second air duct. When the cutting machine cuts the meltblown filter element and the central axis part, the second air duct can be contracted, and then the cut filter element is transferred. In this way, the two groups of the first air duct and the second air duct are alternately replaced, and with the cooperation of the iron push ring, the first magnet and the second magnet, the second air duct can push down the cut filter element through telescoping, so that both the function of negative pressure suction is realized and the filter element can be smoothly discharged to complete the unloading work. Moreover, adopting this kind of rotating unloading method, compared with directly withdrawing the first air duct and the second air duct from the central axis for cutting and unloading, the space limitation is relatively small, and there is no need to reserve space for the displacement of the negative pressure adsorption mechanism. Description of the Drawings

[0019] Figure 1 Front view display diagram of the production device of the ultra-fine fiber meltblown filter element of the present invention;

[0020] Figure 2 Rear view display diagram of the production device of the ultra-fine fiber meltblown filter element of the present invention;

[0021] Figure 3 Partial disassembly sectional view display diagram of the production device of the ultra-fine fiber meltblown filter element of the present invention;

[0022] Figure 4 Display diagram of the upper half of the production device of the ultra-fine fiber meltblown filter element of the present invention and the sliding table mechanism;

[0023] Figure 5 Display diagram of the sliding table mechanism;

[0024] Figure 6 Upper half display diagram of the production device of the ultra-fine fiber meltblown filter element of the present invention;

[0025] Figure 7 Disassembly display diagram of the upper half of the production device of the ultra-fine fiber meltblown filter element of the present invention;

[0026] Figure 8 Stereoscopic sectional view of the negative pressure adsorption mechanism;

[0027] Figure 9 Planar sectional view of the negative pressure adsorption mechanism;

[0028] Figure 10 Schematic diagram of the spraying positions of the fine fiber nozzle and the thick fiber nozzle.

[0029] Main symbol descriptions:

[0030] 1. Frame; 2. Slide carriage; 3. First motor; 4. First screw; 5. Internal thread block; 6. Slide plate; 7. First electric push rod; 8. Mounting bracket; 9. Outer cylinder; 10. Conveyor wheel; 11. Central shaft; 12. Roller bracket; 13. Fine fiber nozzle; 14. Thick fiber nozzle; 15. Cutting machine; 16. Material guide groove; 17. Three-way pipe; 18. Curved pipe; 19. First air duct; 20. Second air duct; 21. Plug cover; 22. Plug block; 23. Exhaust blower; 24. Iron push ring; 25. First magnet; 26. Second magnet; 27. Telescopic corrugated sleeve. Specific implementation manners

[0031] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described.

[0032] Please refer to Figures 1 to 10, the ultra-fine fiber meltblown filter element production device provided in this embodiment includes: a frame 1, on which there is an adjustable mounting bracket 8, and a sliding table mechanism is arranged on the frame 1. The sliding table mechanism includes a sliding frame 2 fixedly installed on the top of the frame 1. On the sliding frame 2, there is a rotatable first screw rod 4 and a first motor 3 for driving the first screw rod 4. A sliding plate 6 is slidably installed on the sliding frame 2. An internally threaded block 5 fixedly connected to the sliding plate 6 is sleeved on the first screw rod 4. Four first electric push rods 7 distributed in a rectangle are arranged on the sliding plate 6. The output rods of the four first electric push rods 7 are all fixedly connected to the bottom of the mounting bracket 8, so as to adjust the relative positions between the central axis 11, the fine fiber nozzle 13, and the coarse fiber nozzle 14. A conveying mechanism and a cutting machine 15 are respectively arranged on the mounting bracket 8. A second electric push rod is arranged on the mounting bracket 8, and the output rod of the second electric push rod is fixedly connected to the cutting machine 15, so as to drive the cutting machine 15 to approach the processed meltblown filter element and cut it. A central axis 11 is arranged on the conveying mechanism. The conveying mechanism includes an outer cylinder 9 fixedly connected to the mounting bracket 8. Three slightly inclined conveying wheels 10 are rotatably installed in the outer cylinder 9. Three second motors for driving the conveying wheels 10 are arranged in the outer cylinder 9. The three conveying wheels 10 all rotate clockwise, so as to drive the central axis 11 to axially move and circumferentially rotate. A nozzle fixing frame is fixedly installed on the frame 1. The fine fiber nozzle 13 and the coarse fiber nozzle 14 are fixedly installed on the nozzle fixing frame. The fine fiber nozzle 13 is located above the central axis 11, and the coarse fiber nozzle 14 is located on one side below the central axis 11, so that the coarse and fine fibers will intersect and fuse before adhering to the central axis 11 after being ejected. A negative pressure adsorption mechanism for preventing the coarse and fine fibers from being disturbed by the airflow and ensuring their smooth combination is also arranged on the mounting bracket 8;

[0033] The negative pressure adsorption mechanism includes a rotatable three-way pipe 17, an axis frame is provided on the mounting frame 8, the three-way pipe 17 passes through the axis frame and is rotatably connected to the axis frame, a third motor is fixedly installed on the axis frame for driving the three-way pipe 17 to rotate, and meshing gears are provided on the third motor and the three-way pipe 17, and the two are transmitted through gears, and a block 22 for controlling the ventilation path is slidably installed in the three-way pipe 17, and the block 22 will block the ventilation port of the first air duct 19 below as the three-way pipe 17 flips, so that the suction force of the first air duct 19 and the second air duct 20 above is more concentrated, and two first air ducts 19 for extending to the inside of the central axis 11 are provided on the three-way pipe 17, and a retractable second air duct 20 is provided in the two first air ducts 19, and a slide groove is provided in the first air duct 19, and a limiting convex strip is provided on the surface of the second air duct 20, and the limiting convex strip extends to the slide groove to mesh with and be slidably connected to the slide groove, so that the second air duct 20 Only axial telescopic movement can be performed in the first air duct 19, an internal threaded tube is fixedly installed in the second air duct 20, a second screw is rotatably installed in the first air duct 19, one end of the second screw extends into the internal threaded tube and is threadedly connected to the internal threaded tube, a fourth motor for driving the second screw is also provided in the first air duct 19, so that the second air duct 20 can be telescopic as needed, strip air outlets are provided on the first air duct 19 and the second air duct 20, a suction fan 23 connected to the three-way pipe 17 is provided at the bottom of the frame 1, a curved tube 18 is rotatably installed on the three-way pipe 17, one end of the curved tube 18 is connected to the suction outlet of the suction fan 23 by the same corrugated tube, so as to ensure that the three-way pipe 17 can be connected to the suction fan 23 and can also be rotated at the same time, so that the first air duct 19 and the second air duct 20 can form a negative pressure from the inside of the central axis 11 to adsorb the coarse and fine fibers that meet after being ejected and the airflow ejected therefrom.

[0034] Through the above technical scheme, by removing the transfer roller in the traditional melt-blown equipment, and setting the fine fiber nozzle 13 above the central axis 11, and increasing the wind force of the fine fiber nozzle 13 as needed, and then setting the coarse fiber nozzle 14 below the side of the central axis 11, the nozzle of the coarse fiber nozzle 14 is tilted upward, so that it forms a cross-convergence with the fine fiber nozzle 13 during the fiber spraying operation, directly interweaving and combining, so that the coarse and fine fibers are combined more fully and thoroughly. At the same time, in addition to the advantage of making the coarse and fine fibers more fully combined, this arrangement method has the advantage of making the coarse and fine fibers more fully combined. When the airflows ejected from the fine fiber nozzle 13 and the coarse fiber nozzle 14 intersect, the fine fibers and the coarse fibers are already in an interwoven state, so that the disturbed airflow generated when the two airflows intersect has a lower impact on the melt-blown molding work, and the central axis 11 can also be adjusted up and down and left and right through the slide mechanism, so as to adjust the relative position between the central axis 11 and the fine fiber nozzle 13 and the coarse fiber nozzle 14, so as to adapt to different needs during production and improve the applicability of the entire equipment.

[0035] Please combine with Figure 8 and Figure 9 , a ferromagnetic push ring 24 is slidably sleeved on the first air duct 19, a first magnet 25 for driving the ferromagnetic push ring 24 to move is embedded on the second air duct 20, and a second magnet 26 for limiting the ferromagnetic push ring 24 is embedded on the first air duct 19. The magnetic force of the second magnet 26 is greater than that of the first magnet 25, so that the second air duct 20 can push off the cut meltblown filter element by telescoping. Moreover, it is preferably recommended to use neodymium magnets for the first magnet 25 and the second magnet 26, which have strong magnetic force and belong to permanent magnets.

[0036] Through the above technical solution, in order to enable the negative pressure adsorption mechanism to perfectly adapt to the meltblown device and solve the problem that the central shaft 11 cannot be normally loaded or unloaded after the negative pressure adsorption mechanism is installed, the negative pressure adsorption mechanism of this application is arranged at the discharge end of the central shaft 11, and a scheme of rotating and alternating two groups of the first air ducts 19 and the second air ducts 20 is adopted. When the cutting machine 15 cuts the meltblown filter element and a part of the central shaft 11, the second air duct 20 can contract, and then transfer the cut filter element. In this way, the two groups of the first air ducts 19 and the second air ducts 20 are rotated and replaced, and with the cooperation of the ferromagnetic push ring 24, the first magnet 25 and the second magnet 26, the second air duct 20 can push off the cut filter element by telescoping, so that the function of negative pressure suction is realized, and at the same time, the filter element can be smoothly discharged to complete the unloading work. Moreover, compared with directly withdrawing the first air duct 19 and the second air duct 20 from the central shaft 11 for cutting and unloading, this kind of rotating unloading method is less restricted by space and does not require reserving space for the displacement of the negative pressure adsorption mechanism.

[0037] Please combine with Figure 8 and Figure 9 , one end of the ferromagnetic push ring 24 is fixedly connected with a telescopic corrugated sleeve 27, and the other end of the telescopic corrugated sleeve 27 is fixedly connected with the first air duct 19. In this way, when the central shaft 11 has not been sleeved on the first air duct 19 after cutting, the ferromagnetic push ring 24 can drive the telescopic corrugated sleeve 27 to seal the strip-shaped air outlet on the first air duct 19, so as to avoid the diversion of the suction force of the second air duct 20 part.

[0038] Please combine with Figure 8 and Figure 9 , a plug cover 21 is rotatably installed at one end of the second air duct 20, and the plug cover 21 is in sliding contact with the inner wall of the central shaft 11. This can not only be used to stabilize the central shaft 11, but also seal the gap between the second air duct 20 and the central shaft 11, so as to ensure the adsorption force in the area of the second air duct 20.

[0039] Please combine with Figure 6, a roller frame 12 for supporting the central shaft 11 is provided on the mounting frame 8. The roller frame 12 is composed of a bracket and two support rollers rotatably mounted on the bracket, so as to stably support the central shaft 11.

[0040] The implementation principle of a production device for ultrafine fiber meltblown filters in the embodiments of the present application is as follows:

[0041] Before use, connect the fine fiber nozzle 13 and the coarse fiber nozzle 14 to an extruder, an air compressor, and an air heater. Then, place the central shaft 11 on the conveying mechanism. The conveying mechanism drives the central shaft 11 to axially move and circumferentially rotate. During this process, the first air duct 19 and the second air duct 20 above extend into the central shaft 11, and a negative pressure is generated inside the central shaft 11 by the suction fan 23, so that the central shaft 11 has an adsorption force.

[0042] At the same time, the fine fiber nozzle 13 and the coarse fiber nozzle 14 respectively spray out fine fibers and coarse fibers. Moreover, the coarse and fine fibers converge and fuse in the area near the central shaft 11, and then adhere to the rotating central shaft 11 together. Since the fine fiber nozzle 13 and the coarse fiber nozzle 14 also spray out airflows when spraying fibers, when the airflows impact the coarse and fine fibers and the central shaft 11, chaotic airflows will occur and disrupt the coarse and fine fibers, affecting the meltblown effect. At this time, the central shaft 11 has an adsorption force, which can greatly reduce the influence of the chaotic airflows on the fibers and enable the fibers to stably adhere to the central shaft 11 (it is recommended to turn on the negative pressure adsorption mechanism after the meltblown filter is initially formed. The reason is that the central shaft 11 itself is in a hollow shape, which makes it difficult for the initial airflow to generate turbulent flow when hitting the central shaft 11, and excessive suction after turning on may also affect the adhesion of the fiber filaments. Therefore, it is best to turn on the negative pressure adsorption mechanism after the filter is initially formed).

[0043] When a part of the meltblown filter in the area of the first air duct 19 is meltblown, the second air duct 20 above together with the internal thread pipe is retracted into the corresponding first air duct 19 under the drive of the second screw rod. Then, the second electric push rod drives the cutting machine 15 to cut the rotating central shaft 11 and the filter attached to the central shaft 11. After cutting, the three-way pipe 17 rotates 180 degrees under the drive of the third motor to swap the positions of the two groups of first air ducts 19 and second air ducts 20. At this time, the second air duct 20 rotated to the upper side extends out of the corresponding first air duct 19 and extends into the central shaft 11 that is currently undergoing meltblown work, so as to continue to adsorb the fibers until the central shaft 11 is sleeved into the first air duct 19 again with meltblown and movement for the next cutting.

[0044] It is transferred to the first air duct 19 and the second air duct 20 with the processed melt-blown filter element sleeved below. The second air duct 20 extends out from within the first air duct 19, adsorbs the iron push ring 24 through the first magnet 25 and drives it to move. The iron push ring 24 drives the melt-blown filter element to move until the iron push ring 24 moves to the second magnet 26 and is adsorbed by the second magnet 26. The melt-blown filter element is transferred onto the second air duct 20. At this time, the second air duct 20 retracts into the first air duct 19 again. The iron push ring 24 is restricted by the second magnet 26 and stops restricting the melt-blown filter element in place (to prevent it from being recovered synchronously under the influence of the second air duct 20). When the second air duct 20 is completely retracted into the first air duct 19, the melt-blown filter element that loses the support of the second air duct 20 directly falls onto the material guiding groove 16, thus completing the melt-blown work of the filter element.

[0045] The above-mentioned implementation manners are only the preferred implementation manners of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of protection required by the present invention.

Claims

1. A superfine fiber melt-blown filter element production device, comprising: A frame (1), wherein a mounting frame (8) capable of adjusting position is disposed on the frame (1), a conveying mechanism and a cutting machine (15) are disposed on the mounting frame (8), a central axis (11) is disposed on the conveying mechanism, and a fine fiber nozzle (13) and a coarse fiber nozzle (14) are also disposed on the frame (1), characterized in that: The fine fiber nozzle (13) is located above the central axis (11), and the coarse fiber nozzle (14) is located on the side below the central axis (11), so that the coarse and fine fibers will intersect and merge after being sprayed out before being attached to the central axis (11); The mounting frame (8) is also provided with a negative pressure adsorption mechanism for preventing the coarse and fine fibers from being disturbed by the airflow and ensuring the smooth combination of the two. The negative pressure adsorption mechanism comprises a rotatable three-way pipe (17), a block (22) capable of controlling a ventilation path being slidably installed in the three-way pipe (17), two first air ducts (19) for extending to the inside of the central axis (11) being arranged on the three-way pipe (17), a retractable second air duct (20) being arranged in each of the two first air ducts (19), strip-shaped air outlets being arranged on each of the first air duct (19) and the second air duct (20), and a suction fan (23) connected to the three-way pipe (17) being arranged at the bottom of the frame (1), so that the first air duct (19) and the second air duct (20) can form a negative pressure from the inside of the central axis (11) to adsorb the coarse and fine fibers that meet after being ejected and the airflow ejected therefrom; An iron push ring (24) is slidably sleeved on the first air duct (19), a first magnet (25) for driving the iron push ring (24) to move is embedded on the second air duct (20), a second magnet (26) for limiting the iron push ring (24) is embedded on the first air duct (19), and the magnetic property of the second magnet (26) is greater than that of the first magnet (25), so that the second air duct (20) can be telescoped to remove the cut melt-blown filter element.

2. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: The frame (1) is provided with a slide mechanism, the slide mechanism comprising a slide (2) fixedly mounted on the top of the frame (1), the slide (2) being provided with a rotatable first screw (4) and a first motor (3) for driving the first screw (4), a slide plate (6) being slidably mounted on the slide (2), an internal thread block (5) being threadedly sleeved on the first screw (4) and fixedly connected to the slide plate (6), and four first electric push rods (7) distributed in a rectangular shape being provided on the slide plate (6), the output rods of the four first electric push rods (7) being fixedly connected to the bottom of the mounting frame (8), thereby adjusting the relative positions between the central axis (11) and the fine fiber nozzle (13) and the coarse fiber nozzle (14).

3. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: One end of the iron push ring (24) is fixedly connected to a telescopic bellows sleeve (27), and the other end of the telescopic bellows sleeve (27) is fixedly connected to the first air duct (19), so that when the central axis (11) is cut but not yet sleeved on the first air duct (19), the iron push ring (24) can drive the telescopic bellows sleeve (27) to seal the strip-shaped air outlet on the first air duct (19), thereby preventing the suction force of the second air duct (20) from being diverted.

4. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: A blocking cover (21) is rotatably mounted on one end of the second air duct (20), and the blocking cover (21) is in sliding contact with the inner wall of the central axis (11), thereby not only being used to stabilize the central axis (11), but also being able to seal the gap between the second air duct (20) and the central axis (11), thereby ensuring the adsorption force in the area of ​​the second air duct (20).

5. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: The transmission mechanism comprises an outer cylinder (9) fixedly connected to a mounting frame (8), three slightly inclined transmission wheels (10) being rotatably mounted in the outer cylinder (9), and three second motors for driving the transmission wheels (10) being arranged in the outer cylinder (9), thereby driving the central shaft (11) to move axially and rotate circumferentially.

6. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: The mounting frame (8) is provided with a roller frame (12) for supporting the central axis (11), so as to stabilize and support the central axis (11).

7. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: The mounting frame (8) is provided with an axle frame, the three-way pipe (17) passes through the axle frame and is rotatably connected to the axle frame, and a third motor for driving the three-way pipe (17) to rotate is fixedly mounted on the axle frame.

8. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: An internally threaded tube is fixedly installed in the second air duct (20), a second screw is rotatably installed in the first air duct (19), one end of the second screw extends into the internally threaded tube and is threadably connected to the internally threaded tube, and a fourth motor for driving the second screw is also provided in the first air duct (19), so that the second air duct (20) can be extended or retracted as required.

9. The ultrafine fiber melt-blown filter element production device according to claim 1, characterized in that: A curved tube (18) is rotatably mounted on the three-way tube (17), and one end of the curved tube (18) is connected to the air suction port of the suction fan (23) via the same corrugated tube.

Images