Synthetic leather primary fiber melt extrusion device and use method

Abstract

The present invention discloses a synthetic leather virgin fiber melt extrusion device and a method for use, belonging to the technical field of spinning machines, comprising a housing, an injection tube installed on the left side of the housing near the upper end, a transmission pipe installed on the right side of the housing near the lower end, a spinneret installed on the right end of the transmission pipe, and a filter cartridge installed inside the housing. The present invention can achieve dynamic change of the filter area by driving the filter cartridge to rotate through a motor, thereby effectively reducing the possibility of filter hole blockage, ensuring the uniformity of the filtration process, and avoiding excessive blockage of the local filter area. When the filter cartridge rotates, the touch block is used to touch the touch switch, instantly controlling the electromagnet to drive the cleaning needle to automatically clean impurities and small bubbles in the filter hole. The vibration force during cleaning is then used to promptly expel small bubbles, thereby avoiding the problem of bubbles passing through the filter hole due to pressure deformation, causing spinning interruption.

Description

Technical Field

[0001] The present invention relates to the technical field of spinning machines, and more particularly to a synthetic leather primary fiber melt extrusion device and a use method thereof. Background Art

[0002] Synthetic leather primary fibers are typically produced through a specific spinning process, where thin streams of polymer solidify and form in a spinning mill. These fibers are primarily composed of microfibers and polyurethane (commonly known as polyurethane). The production process begins by heating the raw materials to a molten state or a suitable liquid state. These molten or liquid materials are then fed into a melt-spinning machine. Inside the machine, the melted raw materials are ejected from a spinneret under pressure. The ejected streams rapidly cool, forming primary fibers. To ensure the fibers are cooled and formed quickly, the spinneret is typically equipped with specialized cooling devices, such as cooling air rings or cooling water jackets. These cooling devices ensure rapid cooling of the fibers after ejection, resulting in a fiber morphology with a defined structure and properties.

[0003] In actual production, problems often arise that hinder smooth spinning. For example, when impurities or particulate matter enter the raw material, these impurities and particulate matter can flow through the raw material and reach the spinneret. Since the spinneret's orifices are typically small, these impurities and particulate matter can easily clog the orifices, preventing further spinning. Once a spinneret becomes clogged, the spinning process is interrupted. The more blocked spinnerets become, the greater the limitation on the spinning length, seriously impacting production efficiency and product quality.

[0004] In addition to the problem of impurities and particulate matter clogging the spinneret, spinning interruption may also be caused by bubbles in the molten and liquid raw materials. When there are bubbles in the raw materials, these bubbles will destroy the continuity of the formation of the nascent fiber filaments when passing through the spinneret holes on the spinneret, causing the nascent fibers to break or defect, thereby causing spinning interruption. In order to solve the above problems, a Chinese patent discloses a fiber melt spinning machine filter device with application number 202421158117.8. The technical solution proposed in the patent disclosure document is to install a filter screen with a smaller aperture in the spinning machine. The principle is to utilize the tension characteristics of bubbles. Since the aperture of the filter screen is small, when the bubbles come into contact with the filter screen, their surface tension will prevent the bubbles from passing through the filter screen. This not only achieves the filtering function of impurities and particulate matter in the raw materials, but also achieves the effect of removing bubbles to a certain extent.

[0005] However, as production time increases, bubbles and impurities will gradually remain on the surface of the filter. These substances accumulated on the surface of the filter will occupy the filter area of the filter, resulting in a decrease in the effective filter area of the filter, which in turn reduces the filter efficiency of the filter. As the filter efficiency decreases, impurities and bubbles in the raw material may not be filtered out in a timely and effective manner, thereby increasing the risk of spinning interruption. On the other hand, if the filter is severely clogged, it will cause the pressure at the filter to increase. Under the action of strong pressure, bubbles will deform. Bubbles that originally could not pass through the filter may change their ability to pass through the filter due to deformation, eventually causing bubbles to pass through the filter. These bubbles that pass through the filter will flow to the spinneret along with the raw material, causing the problem of nascent fiber interruption again, affecting production stability and product quality. Summary of the Invention

[0006] In response to the problems existing in the above-mentioned technology, the purpose of the present invention is to provide a synthetic leather primary fiber melt extrusion device and a method of use, which can realize the rotation of the filter drum driven by a motor and the dynamic change of the filter area, thereby effectively reducing the possibility of filter hole clogging, improving the filtration efficiency, and ensuring the uniformity of the filtration process, avoiding excessive clogging of the local filter area. When the filter drum rotates, the touch block is used to touch the touch switch, and the electromagnet is instantly controlled to drive the cleaning needle to automatically clean the impurities and small bubbles in the filter hole. The vibration force during cleaning is then used to promptly discharge the small bubbles to avoid the problem of bubbles passing through the filter hole due to pressure deformation, causing spinning interruption.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A synthetic leather virgin fiber melt extrusion device comprises a housing, an injection pipe is mounted on the left side of the housing near the upper end, a delivery pipe is mounted on the right side of the housing near the lower end, a spinneret is mounted on the right end of the delivery pipe, a filter cartridge is mounted inside the housing, and evenly distributed filter holes are formed through the side wall of the filter cartridge;

[0009] A bottom plate is fixedly mounted on the lower end of the filter cartridge, a motor is mounted on the lower end of the shell, an output shaft of the motor movably penetrates the shell and is fixedly connected to the bottom plate, a vertical plate is provided on the left side of the filter cartridge, and evenly distributed cleaning needles are fixedly connected to the right side surface of the vertical plate, a control assembly is installed on the right side of the vertical plate, and the control assembly is used to drive the cleaning needle to move right and insert it into the corresponding filter hole, and evenly distributed touch blocks are fixedly mounted on the outer side wall of the filter cartridge near the lower end, and a touch switch is installed on the inner wall of the shell at the position corresponding to the touch block, and the touch switch is used to turn on the control assembly;

[0010] A sealing cover is installed on the upper end of the shell, and an air collecting hood is installed on the upper end of the sealing cover. The interior of the air collecting hood is communicated with the interior of the shell. An exhaust component is also installed on the air collecting hood, and the exhaust component is used to discharge the air in the air collecting hood.

[0011] Furthermore, the control component includes a permanent magnet column, which is fixedly installed on the left side of the vertical plate. An electromagnet is provided on the left side of the permanent magnet column. An outer shell cover is installed on the left side of the shell at the vertical plate. The permanent magnet column and the electromagnet are both installed in the outer shell cover. The side wall of the shell is located at the vertical plate and is provided with a hole groove for the movement of the vertical plate. A first spring is installed on the left side of the vertical plate, and the left end of the first spring is fixedly connected to the inner wall of the outer shell cover.

[0012] Furthermore, the exhaust assembly includes a floating block, which is arranged on an air collecting hood. The overall density of the floating block is lower than the density of the raw material liquid. An exhaust pipe is also installed on the air collecting hood.

[0013] Furthermore, the exhaust pipe is installed on the side wall of the air collecting hood, one end of which passes through the side wall of the air collecting hood and extends to the interior, the side wall of the floating block fits the inner wall of the air collecting hood, and multiple groups of connecting grooves are opened on the side wall of the floating block. The upper end of the floating block is fixedly connected to the limiting column, and the upper end of the limiting column is pressed against the upper inner wall of the air collecting hood. A sealing column is fixedly installed on the side surface of the limiting column, and the end of the sealing column away from the limiting column is pressed against the left end opening of the exhaust pipe for sealing the left end opening of the exhaust pipe. A second spring is wrapped around the connection between the exhaust pipe and the sealing column, the left end of the second spring is fixedly connected to the sealing column, and the right end of the second spring is fixedly connected to the exhaust pipe.

[0014] Furthermore, the exhaust pipe is installed at the upper end of the air collecting hood, and a movable tube is provided inside the exhaust pipe. The lower end of the movable tube movably passes through the upper end wall of the air collecting hood and is fixedly connected to the floating block. The side wall of the movable tube is provided with evenly distributed exhaust holes near the upper end position, and the upper end wall of the sealing cover is located below the floating block and is provided with a connecting hole, and the aperture of the connecting hole is smaller than the diameter of the floating block.

[0015] Furthermore, the bottom plate is made of permanent magnetic material, and the upper end of the bottom plate is fixedly connected with evenly distributed magnetic conductive columns.

[0016] Furthermore, a stirring rod is installed at the center of the upper end surface of the bottom plate.

[0017] Furthermore, the touch switch includes a switch cover, a conductive plate is installed inside the switch cover, a spring is provided on the right side of the conductive plate, a gap is left between the conductive plate and the spring, a telescopic column is fixedly connected to the right side of the spring, the left end of the telescopic column movably passes through the switch cover and extends to the outside, the conductive plate and the spring are both made of conductive material, and the conductive plate and the spring are electrically connected to the control circuit of the electromagnet.

[0018] Furthermore, the outer wall of the filter cartridge is fixedly connected to a limit plate near the upper end, and the inner wall of the shell is fixedly connected to an annular plate below the limit plate.

[0019] The present invention also provides a method for using the above-mentioned synthetic leather primary fiber melt extrusion device, comprising the following steps:

[0020] Step 1: The filter cartridge is driven by a motor to rotate at a certain speed so that the effective filter area of the filter cartridge is continuously changed to reduce the blockage of the effective filter area;

[0021] Step 2: During the rotation of the filter cartridge, the touch block touches the touch switch, instantly turning the electromagnet on and off, causing the electromagnet to generate a strong magnet for a moment, pushing the permanent magnet column through magnetic repulsion, and finally driving the cleaning needle to insert into the corresponding filter hole;

[0022] Step 3: Use a cleaning needle to remove impurities and small bubbles attached to the filter holes, and use the vibration force during cleaning to cause the small bubbles to rise and finally enter the air collecting hood. When the air in the air collecting hood reaches a certain amount, the air in the air collecting hood is discharged through the exhaust assembly.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) This solution uses a motor to drive the filter drum to rotate and dynamically change the filter area, thereby effectively reducing the possibility of filter hole blockage, improving the filtration efficiency, ensuring the uniformity of the filtration process, and avoiding excessive blockage of the local filter area. When the filter drum rotates, the touch block touches the touch switch, instantly controlling the electromagnet to drive the cleaning needle to automatically clean the impurities and small bubbles in the filter hole. The vibration force during cleaning is then used to promptly remove the small bubbles, avoiding the problem of bubbles passing through the filter hole due to pressure deformation, causing spinning interruption.

[0025] (2) This solution uses the vibration force during stirring and cleaning to promptly remove small bubbles attached to the inner wall of the filter cartridge, preventing these small bubbles from clogging the filter holes and affecting the filtering operation. The rising small bubbles enter the gas collecting hood and are collected. When a certain amount is collected, the exhaust component is used to automatically discharge the gas without manual intervention. The exhaust component can automatically seal after discharging the air to prevent outside air from entering, thereby maintaining the stability of the spinning environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0027] Figure 1 This is an external view of the overall structure of the present invention;

[0028] Figure 2 is a cross-sectional view of the interior of the housing of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the filter screen cartridge of the present invention;

[0030] Figure 4 This is a cross-sectional view of the interior of the gas collecting hood in the first embodiment of the present invention;

[0031] Figure 5 This is an exploded view of the exhaust assembly in Example 1 of the present invention;

[0032] Figure 6 This is a cross-sectional view of the interior of the gas collecting hood in the second embodiment of the present invention;

[0033] Figure 7 Schematic diagram of the structure of the touch switch of the present invention.

[0034] Description of the numbers in the figure:

[0035] 1. Shell; 2. Injection pipe; 3. Conveying pipe; 4. Annular plate; 5. Filter cartridge; 6. Limit plate; 7. Bottom plate; 8. Motor; 9. Stirring rod; 10. Touch block; 11. Touch switch; 111. Switch cover; 112. Telescopic column; 113. Shrapnel; 114. Conductive plate; 12. Shell cover; 13. Filter hole; 14. Vertical plate; 15. Cleaning needle; 16. First spring; 17. Permanent magnet column; 18. Electromagnet; 19. Magnetic column; 20. Sealing cover; 21. Gas collecting cover; 22. Exhaust pipe; 23. Floating block; 24. Connecting groove; 25. Limit column; 26. Sealing column; 27. Second spring; 28. Moving pipe; 29. Exhaust hole; 30. Connecting hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figures 1 to 3 A synthetic leather virgin fiber melt extrusion device includes a housing 1. An injection pipe 2 is installed on the left side of the housing 1 near the upper end. A delivery pipe 3 is installed on the right side of the housing 1 near the lower end. A spinneret is installed on the right end of the delivery pipe 3. A filter cartridge 5 is installed inside the housing 1. The side wall of the filter cartridge 5 is penetrated by evenly distributed filter holes 13.

[0039] The lower end of the filter cartridge 5 is fixedly mounted with a bottom plate 7, and the lower end of the shell 1 is mounted with a motor 8. The output shaft of the motor 8 is movable through the shell 1 and is fixedly connected to the bottom plate 7. A vertical plate 14 is provided on the left side of the filter cartridge 5. The right side surface of the vertical plate 14 is fixedly connected with evenly distributed cleaning needles 15. A control component is installed on the right side of the vertical plate 14. The control component is used to drive the cleaning needle 15 to move right and insert it into the corresponding filter hole 13. The outer wall of the filter cartridge 5 is fixedly mounted with evenly distributed touch blocks 10 near the lower end, and the inner wall of the shell 1 corresponds to the position of the touch block 10. A touch switch 11 is installed at the vertical plate 14, and the touch switch 11 is used to turn on the control component. The control component includes a permanent magnet column 17, which is fixedly mounted on the left side of the vertical plate 14. An electromagnet 18 is provided on the left side of the permanent magnet column 17. The left side of the housing 1 is located at the vertical plate 14 and an outer cover 12 is installed. The permanent magnet column 17 and the electromagnet 18 are both installed in the outer cover 12. The side wall of the housing 1 is located at the vertical plate 14 and is provided with a hole groove for the movement of the vertical plate 14. A first spring 16 is installed on the left side of the vertical plate 14. The left end of the first spring 16 is fixedly connected to the inner wall of the outer cover 12.

[0040] A sealing cover 20 is installed at the upper end of the shell 1, and an air collecting hood 21 is installed at the upper end of the sealing cover 20. The interior of the air collecting hood 21 is interconnected with the interior of the shell 1. An exhaust component is also installed on the air collecting hood 21, and the exhaust component is used to discharge the air in the air collecting hood 21.

[0041] During use, the polymer solution is injected into the interior of the shell 1 through the injection tube 2, and the polymer solution will flow into the filter cartridge 5, then pass through the filter hole 13 and flow into the conveying pipe 3, and finally be ejected from the spinneret at the right end of the conveying pipe 3. The impurities and small bubbles in the polymer solution will be filtered through the filter hole 13 and remain in the filter cartridge 5. When working, the motor 8 is turned on, and the motor 8 controls the rotation of the bottom plate 7 to control the rotation of the filter cartridge 5. The motor 8 can control the filter cartridge 5 to rotate at a certain speed, for example, one circle per minute. The side of the filter cartridge 5 close to the conveying pipe 3 is an effective filtering area. During filtration, the impurities and small bubbles in the polymer solution will adhere to the effective filtering area of the filter cartridge 5, that is, blocking the filter hole 13. By controlling the rotation of the filter cartridge 5, the effective filtering area of the filter cartridge 5 can be continuously changed, thereby reducing the clogging of the effective filtering area to a certain extent. When the filter cartridge 5 rotates, it drives the touch block 10 to rotate together. When the touch block 10 rotates, it contacts the touch switch 11. At this time, the electromagnet 18 will be momentarily energized. When the electromagnet 18 is momentarily energized, it will generate a magnetic repulsion force on the permanent magnet column 17. The permanent magnet column 17 moves to the right, and at the same time drives the vertical plate 14 to move together. When the vertical plate 14 moves, it will drive the cleaning needle 15 to move to the right and insert it into the corresponding filter hole 13, pushing away the impurities and small bubbles attached to the filter hole 13, thus achieving the cleaning of the filter hole 13. The cleaned impurities are deposited on the surface of the bottom plate 7 with their own gravity, thus avoiding the clogging of the filter hole 13. When the cleaning needle 15 is inserted into the filter hole 13, it will give the filter cartridge 5 a vibrating force, which can help the small bubbles attached to the filter cartridge 5 to move upward by vibrating the filter cartridge 5. When the vertical plate 14 moves to the right, it pulls the first spring 16. After the electromagnet 18 is de-energized, the previously stretched first spring 16 resets and pulls the vertical plate 14 to the left, allowing the cleaning needle 15 to disengage from the filter hole 13. The rotation of the filter cartridge 5 and the continuous left and right movement of the cleaning needle 15 can clean the filter hole 13. At the same time, the vibration during cleaning causes bubbles attached to the inner wall of the filter cartridge 5 to move upward, which effectively ensures the filtration area of the filter cartridge 5 and avoids problems at the middle of spinning caused by blockage.

[0042] As the small bubbles move upward, they move to the sealing cover 20 and eventually enter the air collecting hood 21. A large number of small bubbles are collected in the air collecting hood 21, thereby achieving bubble collection. By promptly removing the bubbles attached to the inner wall of the filter cartridge 5, clogging of the filter cartridge 5, which would cause increased pressure to squeeze the bubbles through the filter holes 13, is avoided.

[0043] like Figure 2 、 Figure 4 and Figure 5As shown, the exhaust assembly includes a float 23, which is arranged on a gas collecting cover 21. The overall density of the float 23 is lower than the density of the raw material liquid. An exhaust pipe 22 is also installed on the gas collecting cover 21.

[0044] The exhaust pipe 22 is installed on the side wall of the air collecting hood 21, one end of which passes through the side wall of the air collecting hood 21 and extends to the interior. The side wall of the floating block 23 is attached to the inner wall of the air collecting hood 21, and multiple groups of connecting grooves 24 are opened on the side wall of the floating block 23. The upper end of the floating block 23 is fixedly connected to the limiting column 25, and the upper end of the limiting column 25 is against the upper inner wall of the air collecting hood 21. A sealing column 26 is fixedly installed on the side surface of the limiting column 25. The end of the sealing column 26 away from the limiting column 25 is against the left end opening of the exhaust pipe 22, which is used to seal the left end opening of the exhaust pipe 22. A second spring 27 is wrapped around the connection between the exhaust pipe 22 and the sealing column 26. The left end of the second spring 27 is fixedly connected to the sealing column 26, and the right end of the second spring 27 is fixedly connected to the exhaust pipe 22.

[0045] By adopting the above technical solution, the air in the gas collecting hood 21 will flow to the upper end of the floating block 23 through the connecting groove 24, and gather more and more, and finally the air pressure will increase, and the air pressure will squeeze the liquid level of the polymer solution to drop. At this time, the floating block 23 moves down with the liquid level of the polymer solution. The downward movement of the floating block 23 will drive the limiting column 25 to move down together. When the limiting column 25 moves downward, it will drive the sealing column 26 to move synchronously. The sealing column 26 is misaligned with the left end opening of the exhaust pipe 22. At this time, the left end opening of the exhaust pipe 22 is opened, the air in the gas collecting hood 21 is discharged, the air pressure in the gas collecting hood 21 is reduced, the polymer solution level moves up, the floating block 2 moves upward, and finally the upper end of the limiting column 25 is against the inner wall of the upper end of the gas collecting hood 21, and the sealing column 26 blocks the left end opening of the exhaust pipe 22 to prevent the air from being discharged, and the gas collection operation continues. The side wall of the floating block 23 is in contact with the inner wall of the gas collecting cover 21 , so that the floating block 23 can only move up and down in the gas collecting cover 21 , thereby preventing the floating block 23 from swinging left and right and causing the left end opening of the exhaust pipe 22 to be opened.

[0046] Example 2

[0047] like Figure 6 As shown, the exhaust pipe 22 is installed at the upper end of the air collecting hood 21, and a movable pipe 28 is arranged inside the exhaust pipe 22. The lower end of the movable pipe 28 is movable through the upper end wall of the air collecting hood 21 and is fixedly connected to the floating block 23. The side wall of the movable pipe 28 is provided with evenly distributed exhaust holes 29 near the upper end position, and the upper end wall of the sealing cover 20 is located below the floating block 23 and is provided with a connecting hole 30. The aperture of the connecting hole 30 is smaller than the diameter of the floating block 23.

[0048] By adopting the above technical solution, after the polymer solution enters the gas collection hood 21 through the connecting hole 30, the float 23 moves upward, driving the movable tube 28 upward, and the exhaust hole 29 enters the exhaust pipe 22, thereby blocking the exhaust hole 29. As more air gathers around the float 23, the air pressure increases, which squeezes the liquid level of the polymer solution downward. The float 23 moves downward with the liquid level of the polymer solution, and the movable tube 28 also moves downward. Finally, the exhaust hole 29 leaks out from the lower end of the exhaust pipe 22, and the air in the gas collection hood 21 enters the movable tube 28 through the exhaust hole 29 and is discharged along the pipe. After the air pressure decreases, the liquid level of the polymer solution rises, driving the float 23 upward, causing the exhaust hole 29 to enter the exhaust pipe 22, thereby blocking the exhaust hole 29 and continuing the gas collection operation.

[0049] like Figure 2 As shown, the bottom plate 7 is made of permanent magnetic material, such as iron-cobalt-nickel material, which can absorb magnetic impurities in the polymer solution and facilitate the rapid precipitation of impurities. The upper end of the bottom plate 7 is fixedly connected with evenly distributed magnetic columns 19. The magnetic columns 19 increase the area of magnetic attraction, which helps to clean up the magnetic impurities in the polymer solution.

[0050] like Figure 2 As shown, a stirring rod 9 is installed at the center position of the upper end surface of the bottom plate 7. When the filter cylinder 5 rotates, it drives the stirring rod 9 to rotate. The stirring rod 9 stirs the polymer solution to facilitate the upward movement of bubbles in the liquid and enter the gas collecting hood 21, which is convenient for collecting gas.

[0051] like Figure 7 As shown, the touch switch 11 includes a switch cover 111, a conductive plate 114 is installed inside the switch cover 111, a spring 113 is provided on the right side of the conductive plate 114, a gap is left between the conductive plate 114 and the spring 113, a telescopic column 112 is fixedly connected to the right side of the spring 113, the left end of the telescopic column 112 movably passes through the switch cover 111 and extends to the outside, the conductive plate 114 and the spring 113 are both made of conductive material, and the conductive plate 114 and the spring 113 are electrically connected to the control circuit of the electromagnet 18.

[0052] By adopting the above technical solution, when the touch block 10 rotates, the touch block 10 will squeeze the telescopic column 112, and the telescopic column 112 will move into the switch cover 111. Finally, the telescopic column 112 squeezes the spring 113, and the spring 113 bends, and finally the spring 113 contacts the conductive plate 114. The control circuit receives the signal that the spring 113 and the conductive plate 114 are closed, and at this time, it will send a momentary power signal to the electromagnet 18, thereby driving the cleaning needle 15 to move right and finally reset. When the touch block 10 no longer squeezes the telescopic column 112, the bent spring 113 resets, causing the spring 113 to disconnect from the conductive plate 114.

[0053] like Figure 2 As shown, the outer wall of the filter cartridge 5 is fixedly connected to a limiting plate 6 near the upper end, and the inner wall of the shell 1 is fixedly connected to a ring plate 4 below the limiting plate 6, which is used to support the limiting plate 6 and limit the upper end of the filter cartridge 5 through the ring plate 4 to avoid the upper end of the filter cartridge 5 from swinging when it rotates, making it difficult for the cleaning needle 15 to be inserted into the filter hole 13.

[0054] The present invention also provides a method for using the above-mentioned synthetic leather primary fiber melt extrusion device, comprising the following steps:

[0055] Step 1: The filter cartridge 5 is driven by the motor 8 to rotate at a certain speed so that the effective filter area of the filter cartridge 5 is continuously changed to reduce the blockage of the effective filter area;

[0056] Step 2: During the rotation of the filter cartridge 5, the touch block 10 touches the touch switch 11, instantly turning on and off the electromagnet 18, causing the electromagnet 18 to generate a momentary strong magnetism, which pushes the permanent magnet 17 through the magnetic repulsion force, and finally drives the cleaning needle 15 to be inserted into the corresponding filter hole 13;

[0057] Step 3, remove impurities and small bubbles attached to the filter hole 13 through the cleaning needle 15, and use the vibration force during cleaning to cause the small bubbles to rise and finally enter the air collecting hood 21. When the air in the air collecting hood 21 reaches a certain amount, the air in the air collecting hood 21 is discharged through the exhaust component.

[0058] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A synthetic leather virgin fiber melt extrusion device, comprising a housing (1), an injection pipe (2) being installed on the left side of the housing (1) near the upper end, a conveying pipe (3) being installed on the right side of the housing (1) near the lower end, a spinneret being installed on the right end of the conveying pipe (3), a filter cartridge (5) being installed inside the housing (1), and filter holes (13) being uniformly distributed through the side wall of the filter cartridge (5); Its characteristics are: A bottom plate (7) is fixedly mounted on the lower end of the filter cartridge (5), a motor (8) is mounted on the lower end of the housing (1), an output shaft of the motor (8) movably passes through the housing (1) and is fixedly connected to the bottom plate (7), a vertical plate (14) is provided on the left side of the filter cartridge (5), and evenly distributed cleaning needles (15) are fixedly connected to the right side surface of the vertical plate (14), a control component is mounted on the right side of the vertical plate (14), and the control component is used to drive the cleaning needles (15) to move right and insert them into the corresponding filter holes (13), an outer wall of the filter cartridge (5) is fixedly mounted with evenly distributed touch blocks (10) near the lower end, and a touch switch (11) is mounted on the inner wall of the housing (1) at a position corresponding to the touch block (10), and the touch switch (11) is used to turn on the control component; A sealing cover (20) is mounted on the upper end of the housing (1), an air collecting hood (21) is mounted on the upper end of the sealing cover (20), the interior of the air collecting hood (21) is in communication with the interior of the housing (1), and an exhaust assembly is further mounted on the air collecting hood (21), the exhaust assembly being used to discharge air in the air collecting hood (21); The control component includes a permanent magnet column (17), the permanent magnet column (17) is fixedly mounted on the left side of the vertical plate (14), an electromagnet (18) is provided on the left side of the permanent magnet column (17), an outer shell cover (12) is installed on the left side of the vertical plate (14), the permanent magnet column (17) and the electromagnet (18) are both installed in the outer shell cover (12), a hole groove for the movement of the vertical plate (14) is opened on the side wall of the shell (1) at the vertical plate (14), a first spring (16) is installed on the left side of the vertical plate (14), and the left end of the first spring (16) is fixedly connected to the inner wall of the outer shell cover (12); The exhaust assembly includes a float (23), which is arranged on an air collecting hood (21). The overall density of the float (23) is lower than the density of the raw material liquid. An exhaust pipe (22) is also installed on the air collecting hood (21). The exhaust pipe (22) is installed at the upper end of the air collecting hood (21). A movable pipe (28) is arranged inside the exhaust pipe (22). The lower end of the movable pipe (28) movably passes through the upper end wall of the air collecting hood (21) and is fixedly connected to the float (23). The side wall of the movable pipe (28) is provided with evenly distributed exhaust holes (29) near the upper end. The upper end wall of the sealing cover (20) is provided with a connecting hole (30) below the float (23). The aperture of the connecting hole (30) is smaller than the diameter of the float (23).

2. The synthetic leather primary fiber melt extrusion device according to claim 1, characterized in that: The bottom plate (7) is made of permanent magnetic material, and the upper end of the bottom plate (7) is fixedly connected with evenly distributed magnetic conductive columns (19).

3. The synthetic leather primary fiber melt extrusion device according to claim 2, characterized in that: A stirring rod (9) is installed at the center of the upper end surface of the bottom plate (7).

4. The synthetic leather primary fiber melt extrusion device according to claim 3, characterized in that: The touch switch (11) includes a switch cover (111), a conductive plate (114) is installed inside the switch cover (111), a spring (113) is provided on the right side of the conductive plate (114), a gap is left between the conductive plate (114) and the spring (113), a telescopic column (112) is fixedly connected to the right side of the spring (113), the left end of the telescopic column (112) movably passes through the switch cover (111) and extends to the outside, the conductive plate (114) and the spring (113) are both made of conductive material, and the conductive plate (114) and the spring (113) are electrically connected to the control circuit of the electromagnet (18).

5. The synthetic leather primary fiber melt extrusion device according to claim 4, characterized in that: The outer wall of the filter cartridge (5) is fixedly connected to a limit plate (6) near the upper end, and the inner wall of the housing (1) is fixedly connected to an annular plate (4) below the limit plate (6).

6. A method for using the synthetic leather primary fiber melt extrusion device according to claim 5, characterized in that: The steps include: Step 1: driving the filter cartridge (5) to rotate at a certain speed by means of a motor (8) so that the effective filter area of the filter cartridge (5) is continuously changed to reduce clogging of the effective filter area; Step 2: During the rotation of the filter cartridge (5), the touch block (10) touches the touch switch (11), instantly turning on and off the electromagnet (18), causing the electromagnet (18) to generate a momentary strong magnetism, pushing the permanent magnet column (17) through the magnetic repulsion force, and finally driving the cleaning needle (15) to be inserted into the corresponding filter hole (13); Step 3, remove impurities and small bubbles attached to the filter hole (13) by using a cleaning needle (15), and use the vibration force during cleaning to cause the small bubbles to rise and finally enter the air collecting hood (21). When the air in the air collecting hood (21) reaches a certain amount, the air in the air collecting hood (21) is discharged through the exhaust assembly.

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