Floating dust separation equipment for recycling and processing regenerated PET (Polyethylene Terephthalate) applied to superfine denier filament production

Abstract

The invention relates to the technical field of floating dust separation, and discloses floating dust separation equipment for recycling and processing regenerated PET applied to superfine denier filament production, the floating dust separation equipment comprises a base, the top of the base is fixedly connected with an impurity storage box, the top of the impurity storage box is fixedly connected with a suction mechanism, the top of the base is fixedly connected with a filtering mechanism, and the filtering mechanism is fixedly connected with a dust collection mechanism. By arranging the filtering mechanism, the self-cleaning function of the surface of the filter screen can be synchronously achieved, the problem that the filter screen is blocked due to long-term operation of equipment is effectively avoided, the spraying device sprays liquid to the conical filter screen at an acute angle, and by means of the design, fine particles can be captured through the adsorption effect, and impurities attached to the surface of the filter screen can be removed through inclined scouring force; meanwhile, floating dust is prevented from penetrating through the filter screen due to overlarge vertical water pressure, and due to the design of the conical filter screen, the washed dust-containing liquid can flow towards the lower layer along the conical surface, so that the subsequent filtering process is not interfered by the dirty liquid, and the overall filtering efficiency of the equipment is continuously and stably improved.

Description

Technical Field

[0001] The invention relates to the technical field of floating dust separation, in particular to floating dust separation equipment for recycling and processing regenerated PET used in the production of ultra-fine denier filaments. Background Art

[0002] Ultrafine denier filament is a chemical fiber filament with an extremely fine diameter, mainly made through chemical synthesis. Its core characteristic is that the fiber fineness reaches the "ultrafine" level.

[0003] The patent application with application number CN202222134247.5 discloses a floating dust separation device for recycled PET production, and its technical solution includes: a shell, an ash box and a support frame, the ash box is symmetrically placed inside the lower end of the shell, a first partition is installed inside the shell, the lower end of the first partition is symmetrically connected to a guide pipe, a support frame is provided inside the upper end of the shell, a filter plate is installed inside the support frame, a servo motor is symmetrically installed on the inner wall of the upper end of the shell, the output end of the servo motor is connected to a connecting rod, the lower end of the connecting rod is installed with a connecting frame, and a vibration motor is installed on each of the connecting frames. The vibration motor vibrates in conjunction with the support frame to shake off the dust on the filter plate, so that the filter plate maintains a good filtering effect, and the dust is collected centrally through the ash box, avoiding the staff from frequently cleaning the device and reducing the labor intensity of the staff.

[0004] Although existing equipment has a certain degree of effectiveness in dust separation operations when in use, given the purity requirements of ultrafine denier filaments, the separation accuracy of dust in the production process is insufficient. The current mainstream separation components mostly use a single filter filtration method. Some extremely small dust particles can easily penetrate the filter layer due to the limited screen aperture or airflow disturbance, posing a potential risk to the stability of the ultrafine denier filament spinning process and the quality of the finished product. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a dust separation device for recycling and processing regenerated PET used in the production of ultra-fine denier filaments to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a floating dust separation device for recycled PET recycling and processing used in the production of ultra-fine denier filaments, comprising a base, a dust storage box fixedly connected to the top of the base, a suction mechanism fixedly connected to the top of the dust storage box, and a filtering mechanism fixedly connected to the top of the base;

[0007] The suction mechanism comprises:

[0008] The diaphragm of the present invention is fixedly connected to the diaphragm of the present invention, and the diaphragm of the present invention is fixedly connected to the diaphragm of the present invention.

[0009] According to the above technical solution, the end of the hollow column 1 close to the filtering mechanism is fixedly connected to the outer shell 1, and the side of the outer shell 1 away from the hollow column 1 is fixedly connected to the connecting pipe 2. The external gas is sucked into the hollow column 1 and input into the filtering mechanism through the outer shell 1 and the connecting pipe 2.

[0010] According to the above technical solution, the inner wall of the outer shell one is rotatably connected to the hollow ring two through a bearing, the inner wall of the hollow ring two is fixedly connected to the guide plate two, the outer wall of the hollow ring two is fixedly connected to the gear one, the inner wall of the outer shell one is rotatably connected to the gear two through a bearing, the outer wall of the outer shell one is fixedly connected to the motor one, the output end of the motor one is fixedly connected to the gear two, the gear two is engaged with the gear one, and the rotation of the guide plate two can drive the gas in the equipment to flow to the filtering mechanism.

[0011] According to the above technical solution, the filtering mechanism includes a liquid storage tank, the bottom of the liquid storage tank is fixedly connected to the base, the top of the liquid storage tank is fixedly connected to a hollow column 2, the top of the liquid storage tank is fixedly connected to a connecting pipe 3, the outer wall of the hollow column 2 is fixedly connected to a water level detection device, the outer wall of the hollow column 2 is fixedly connected to an air outlet pipe, the outer wall of the liquid storage tank is fixedly connected to a liquid outlet pipe, and the liquid outlet pipe is connected to a pumping device. When the liquid height inside the liquid storage tank is higher than the water level detection device, the suction device is started to extract a part of the liquid in the equipment. By setting up a filtering mechanism, the conical filter first mechanically intercepts the solid particles in the airflow, and the nozzle sprays fine water mist to the filter at a specific angle, which effectively captures fine particles, improves the capture efficiency of ultrafine particles, blocks the possibility of residual floating dust entering subsequent precision processing procedures, and improves the filtering effect of the equipment.

[0012] According to the above technical solution, the top of the hollow column two is fixedly connected to the outer shell two, the top of the outer shell two is fixedly connected to the outer shell three, and the outer wall of the outer shell three is fixedly connected to the connecting pipe two, wherein the gas in the suction mechanism is discharged into the outer shell three, and passes through the outer shell two and the hollow column two, and is finally discharged from the outlet pipe.

[0013] According to the above technical solution, the inner wall of the outer shell 2 is fixedly connected with a guide ring, the top of the outer shell 3 is fixedly connected with a motor 2, the output end of the motor 2 is fixedly connected with a connecting rod 2, the bottom of the connecting rod 2 is fixedly connected with a conical filter, the bottom of the conical filter is fixedly connected with a hollow conical ring, the bottom of the hollow conical ring is rotatably connected to the guide ring through a bearing, wherein the motor 2 can drive the conical filter to rotate and filter the gas through the conical filter. By setting up a filtering mechanism, since the motor drives the conical filter to rotate, the dust and moisture attached to the surface of the filter can be efficiently thrown to the outside with the help of centrifugal force, which can effectively prevent the dust-containing liquid from passing through the filter, avoiding its adverse effects on the filtering effect of the equipment, enhancing the equipment's ability to intercept fine particles, and ensuring the continuous and efficient filtering process.

[0014] According to the above technical solution, the inner wall of the second shell is fixedly connected with a right-angle plate, and the outer wall of the right-angle plate is fixedly connected with a nozzle, and the nozzle is fixed on the inclined surface of the right-angle plate, so that the water mist sprayed by the nozzle forms a certain angle with the conical filter. By setting a filtering mechanism, the self-cleaning function of the filter surface can be realized simultaneously, and the filter blockage problem caused by long-term operation of the equipment can be effectively avoided. The spray device sprays liquid to the conical filter at an acute angle. This design can not only capture fine particles by adsorption, but also remove impurities attached to the surface of the filter through inclined flushing force, and at the same time avoid floating dust penetrating the filter due to excessive vertical water pressure. Due to the design of the conical filter, the dust-containing liquid flushed down can flow along the lower layer of the cone surface, ensuring that the subsequent filtration process is not disturbed by dirty liquid, thereby continuously and stably improving the overall filtration efficiency of the equipment.

[0015] According to the above technical solution, the top of the guide ring is fixedly connected to the hollow column three, the top of the hollow column three is fixedly connected to the outer shell two, and a notch is provided on the outer wall of the hollow column three. The notch passes through the hollow column three and extends to the inner wall of the hollow column three, wherein the notch can allow the cleaned sewage to flow between the outer shell two and the guide ring.

[0016] Compared with the prior art, the present invention provides a dust separation device for recycled PET recycling and processing used in the production of ultra-fine denier filaments, which has the following beneficial effects:

[0017] 1. The present invention sets up a suction mechanism, guides the gas to form a spiral flow field through the guide plate and the conical guide column, so that the particles with larger particle size and higher density in the mixed gas are thrown to the outside of the flow field under the action of centrifugal force, while the airflow carrying fine particles continues to be transported to the filtering mechanism. The pre-separation method effectively reduces the load of the subsequent filtering mechanism, avoids the interference of large particle impurities on the subsequent filtering link, and improves the filtering effect of the equipment.

[0018] 2. The present invention sets a filtering mechanism. The conical filter first mechanically intercepts the solid particles in the airflow. The nozzle sprays fine water mist to the filter at a specific angle, effectively capturing fine particles, improving the capture efficiency of ultrafine particles, blocking the possibility of residual dust entering the subsequent precision processing process, and improving the filtering effect of the equipment.

[0019] 3. The present invention can simultaneously realize the self-cleaning function of the filter surface by setting a filtering mechanism, effectively avoiding the problem of filter clogging caused by long-term operation of the equipment. The spray device sprays liquid at an acute angle to the conical filter. This design can not only capture fine particles by adsorption, but also remove impurities attached to the filter surface through inclined flushing force, while avoiding the penetration of floating dust by excessive vertical water pressure. Due to the design of the conical filter, the dust-containing liquid flushed down can flow along the cone surface to the lower layer, ensuring that the subsequent filtration process is not disturbed by the dirty liquid, thereby continuously and stably improving the overall filtration efficiency of the equipment.

[0020] 4. The present invention sets a filtering mechanism. Since the motor drives the conical filter to rotate, the dust and water attached to the surface of the filter are efficiently thrown outward with the help of centrifugal force, which can effectively prevent the dust-containing liquid from passing through the filter, avoiding its adverse effects on the filtering effect of the equipment, enhancing the equipment's ability to intercept fine particles, and ensuring the continuous high efficiency of the filtration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 The suction mechanism of the present invention is cut away Figure 1 ;

[0024] Figure 3 The suction mechanism of the present invention is cut away Figure 2 ;

[0025] Figure 4 Schematic diagram of the suction mechanism of the present invention Figure 1 ;

[0026] Figure 5 Schematic diagram of the suction mechanism of the present invention Figure 2 ;

[0027] Figure 6 It is a schematic diagram of the filtering mechanism of the present invention;

[0028] Figure 7 The filter mechanism of the present invention is cut away Figure 1 ;

[0029] Figure 8 The filter mechanism of the present invention is cut away Figure 2 .

[0030] In the figure: 1, base; 101, storage box; 2, suction mechanism; 201, connecting pipe 1; 202, hollow column 1; 203, housing 1; 204, connecting pipe 2; 205, guide plate 1; 206, hollow ring 1; 207, hollow conical plate; 208, connecting rod 1; 209, connecting column; 2010, conical guide column; 2011, hollow ring 2; 2012, guide plate 2; 2013, gear 1; 2014, gear 2; 2015, motor 1 ; 3. Filtering mechanism; 301. Liquid storage tank; 302. Liquid outlet pipe; 303. Connecting pipe three; 304. Hollow column two; 305. Water level detection device; 306. Air outlet pipe; 307. Shell two; 308. Shell three; 309. Motor two; 3010. Hollow column three; 3011. Notch; 3012. Guide ring; 3013. Right-angle plate; 3014. Nozzle; 3015. Connecting rod two; 3016. Conical filter screen; 3017. Hollow conical ring. DETAILED DESCRIPTION

[0031] 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. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0033] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Example 1: See Figure 1-Figure 5 The present invention provides a technical solution: a dust separation device for recycled PET recycling and processing used in the production of ultra-fine denier filaments, comprising a base 1, a debris storage box 101 fixedly connected to the top of the base 1, a suction mechanism 2 fixedly connected to the top of the debris storage box 101, and a filtering mechanism 3 fixedly connected to the top of the base 1.

[0035] In order to prevent the subsequent filtering mechanism from affecting the overall filtering efficiency due to excessive load, a suction mechanism 2 is provided.

[0036] The suction mechanism 2 includes: a connecting pipe 201, a hollow column 202 fixedly connected to the top of the connecting pipe 201, a guide plate 205 fixedly connected to the inner wall of the hollow column 202, a hollow ring 206 fixedly connected to the inner wall of the hollow column 202, a hollow conical plate 207 fixedly connected to the side of the hollow ring 206 close to the guide plate 205, a connecting rod 208 fixedly connected to the side of the hollow conical plate 207 away from the hollow ring 206, a connecting rod 208 fixedly connected to the side of the connecting rod 208 away from the hollow conical plate 207, and a connecting column 209 fixedly connected to the end of the connecting column 209 away from the connecting rod 208. 2010, the guide plate 1 205 and the conical guide column 2010 can guide the gas sucked into the device to form a spiral flow state. The end of the hollow column 1 202 close to the filter mechanism 3 is fixedly connected to the shell 1 203, and the side of the shell 1 203 away from the hollow column 1 202 is fixedly connected to the connecting pipe 2 204. The external gas is sucked from the hollow column 1 202 and input into the filter mechanism 3 through the shell 1 203 and the connecting pipe 2 204. The inner wall of the shell 1 203 is rotatably connected to the hollow ring 2011 through the bearing. The inner wall of the hollow ring 2 2011 is fixedly connected to the guide plate 2 2012, and the outer wall of the hollow ring 2 2011 is fixed. It is connected to gear 1 2013, and the inner wall of the housing 1 203 is rotatably connected to gear 2 2014 through a bearing. The outer wall of the housing 1 203 is fixedly connected to motor 1 2015. The output end of motor 1 2015 is fixedly connected to gear 2 2014, and gear 2 2014 is meshed with gear 1 2013. The rotation of guide plate 2 2012 can drive the gas in the device to flow to the filter mechanism 3. When the device is working, the external gas is input from the front end of the hollow column 1 202 through the gas suction device. At this time, the gas entering the suction mechanism 2 will form a vortex airflow under the influence of guide plate 1 205 and conical guide column 2010. Due to the rotation of the airflow, some larger dust particles are thrown to the outside of the hollow column 202 under the action of centrifugal force, and then fall into the storage box 101 through the connecting pipe 201. At the same time, the motor 1 2015 is started to drive the gear 2 2014 to rotate. The rotating gear 2 2014 will drive the gear 1 2013 to rotate, and then the rotation of the gear 1 2013 will drive the internal hollow ring 2 2011 and the guide plate 2 2012 to rotate. The rotating 1012 will enhance the flow capacity of the gas, allowing the gas with fine dust to be sent from the inside of the hollow ring 1 206 and the connecting pipe 2 204 to the filter mechanism 3.

[0037] Example 2: Please refer to Figure 6-Figure 8On the basis of the first embodiment, the present invention provides a technical solution: in order to ensure that the device can filter fine floating dust and ensure that the device operates stably for a long time, a filtering mechanism 3 is set, and the filtering mechanism 3 includes a liquid storage box 301, the bottom of the liquid storage box 301 is fixedly connected to the base 1, the top of the liquid storage box 301 is fixedly connected with a hollow column 2 304, the top of the liquid storage box 301 is fixedly connected with a connecting pipe 303, the outer wall of the hollow column 2 304 is fixedly connected with a water level detection device 305, the outer wall of the hollow column 2 304 is fixedly connected with an air outlet pipe 306, and the outer wall of the liquid storage box 301 is fixedly connected with a liquid outlet pipe 302, which is connected to a water pumping device. When the liquid level inside the liquid storage box 301 is higher than the water level detection device 305, the suction device is started to pump the device A portion of the liquid in the liquid tank is extracted. When the equipment is in use, a certain amount of liquid is pre-injected into the liquid storage tank 301, and the liquid level is maintained below the water level detection device 305. When the filtered gas is discharged through the hollow column 2 304 and vertically impacts the liquid surface, the fine particles that may remain in the air flow can be captured by the liquid surface through inertial collision, thereby further ensuring the filtering capacity of the equipment. The purified gas flows to the air outlet pipe 306 through the space above the liquid surface. As the filtering process continues, the dust-containing liquid continuously flows into the liquid storage tank 301. When the liquid level exceeds the sensing threshold of the water level detection device 305, the external pumping device is automatically triggered to pump out excess liquid through the liquid outlet pipe 302 to ensure that the liquid level is always lower than the bottom opening of the air outlet pipe 306, so as to avoid liquid backflow affecting the smoothness of the gas discharge path.

[0038] The top of the hollow column 2 304 is fixedly connected to the shell 2 307, the top of the shell 2 307 is fixedly connected to the shell 3 308, the outer wall of the shell 308 is fixedly connected to the connecting pipe 2 204, wherein the gas in the suction mechanism 2 is discharged into the shell 3 308, and passes through the shell 2 307 and the hollow column 2 304, and is finally discharged from the outlet pipe 306, the inner wall of the shell 2 307 is fixedly connected to the guide ring 3012, the top of the shell 308 is fixedly connected to the motor 2 309, the output end of the motor 2 309 is fixedly connected to the connecting rod 2 3015, and the bottom of the connecting rod 2 3015 is fixed. The conical filter 3016 is connected, and the bottom of the conical filter 3016 is fixedly connected to a hollow conical ring 3017. The bottom of the hollow conical ring 3017 is rotatably connected to the guide ring 3012 through a bearing. The motor 2 309 can drive the conical filter 3016 to rotate and filter the gas through the conical filter 3016. The inner wall of the outer shell 2 307 is fixedly connected to a right-angle plate 3013. The outer wall of the right-angle plate 3013 is fixedly connected to a nozzle 3014. The nozzle 3014 is fixed on the inclined surface of the right-angle plate 3013, so that the water mist sprayed by the nozzle 3014 and the conical filter 3016 forms a certain angle, the top of the guide ring 3012 is fixedly connected to the hollow column three 3010. The top of the hollow column three 3010 is fixedly connected to the shell two 307. The outer wall of the hollow column three 3010 is provided with a notch 3011. The notch 3011 penetrates the hollow column three 3010 and extends to the inner wall of the hollow column three 3010. The notch 3011 can allow the cleaned sewage to flow between the shell two 307 and the guide ring 3012. When the equipment is working, the suction mechanism 2 discharges the gas into the shell three 308. The airflow is filtered by the conical filter 3016 and enters the hollow column below. The second filter 304 is finally discharged into the subsequent processing equipment through the outlet pipe 306. During this process, the nozzle 3014 sprays mist liquid onto the conical filter screen, while adsorbing and filtering the floating dust in the air flow, it simultaneously flushes the surface of the conical filter screen 3016 to remove attached impurities. At the same time, the second motor 309 drives the conical filter screen 3016 to rotate through the second connecting rod 3015, so that the dust-containing sewage moves to the outside of the filter screen under the dual action of centrifugal force and gravity, flows into the gap between the second shell 307 and the guide ring 3012 through the notch 3011, and finally enters the liquid storage tank 301 through the third connecting pipe 303.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dust separation device for recycled PET recycling and processing used in the production of ultra-fine denier filaments, comprising a base (1), a dust storage box (101) fixedly connected to the top of the base (1), characterized in that: The top of the sundry storage box (101) is fixedly connected to a suction mechanism (2), and the top of the base (1) is fixedly connected to a filtering mechanism (3); The suction mechanism (2) comprises: A connecting pipe (201) is fixedly connected to a hollow column (202) at the top of the connecting pipe (201), a guide plate (205) is fixedly connected to the inner wall of the hollow column (202), a hollow ring (206) is fixedly connected to the inner wall of the hollow column (202), a hollow ring (206) is fixedly connected to the side of the hollow ring (206) close to the guide plate (205), and a hollow conical plate (207) is fixedly connected to the side of the hollow ring (206) close to the guide plate (205). One side of the hollow ring (206) is fixedly connected to a connecting rod (208), and the side of the connecting rod (208) away from the hollow conical plate (207) is fixedly connected to a connecting column (209), and the end of the connecting column (209) away from the connecting rod (208) is fixedly connected to a conical guide column (2010), and the guide plate (205) and the conical guide column (2010) can guide the gas sucked into the device to form a spiral flow state.

2. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 1, characterized in that: One end of the hollow column (202) close to the filter mechanism (3) is fixedly connected to the outer shell (203), and the side of the outer shell (203) away from the hollow column (202) is fixedly connected to the connecting pipe (204). External gas is sucked into the hollow column (202) and input into the filter mechanism (3) through the outer shell (203) and the connecting pipe (204).

3. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 2, characterized in that: The inner wall of the housing 1 (203) is rotatably connected to the hollow ring 2 (2011) via a bearing, the inner wall of the hollow ring 2 (2011) is fixedly connected to the guide plate 2 (2012), the outer wall of the hollow ring 2 (2011) is fixedly connected to the gear 1 (2013), the inner wall of the housing 1 (203) is rotatably connected to the gear 2 (2014) via a bearing, the outer wall of the housing 1 (203) is fixedly connected to the motor 1 (2015), the output end of the motor 1 (2015) is fixedly connected to the gear 2 (2014), the gear 2 (2014) is meshed with the gear 1 (2013), and the rotation of the guide plate 2 (2012) can drive the gas in the device to flow toward the filtering mechanism (3).

4. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 3, characterized in that: The filtering mechanism (3) comprises a liquid storage box (301), the bottom of the liquid storage box (301) is fixedly connected to the base (1), the top of the liquid storage box (301) is fixedly connected to a second hollow column (304), the top of the liquid storage box (301) is fixedly connected to a third connecting pipe (303), the outer wall of the second hollow column (304) is fixedly connected to a water level detection device (305), the outer wall of the second hollow column (304) is fixedly connected to an air outlet pipe (306), the outer wall of the liquid storage box (301) is fixedly connected to a liquid outlet pipe (302), the liquid outlet pipe (302) is connected to a water pumping device, and when the liquid level inside the liquid storage box (301) is higher than the water level detection device (305), the suction device is activated to extract a portion of the liquid in the device.

5. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 4, characterized in that: The top of the second hollow column (304) is fixedly connected to the second shell (307), the top of the second shell (307) is fixedly connected to the third shell (308), and the outer wall of the third shell (308) is fixedly connected to the second connecting pipe (204), wherein the gas in the suction mechanism (2) is discharged into the third shell (308), passes through the second shell (307) and the second hollow column (304), and is finally discharged from the outlet pipe (306).

6. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 5, characterized in that: The inner wall of the second shell (307) is fixedly connected to a guide ring (3012), the top of the third shell (308) is fixedly connected to a second motor (309), the output end of the second motor (309) is fixedly connected to a second connecting rod (3015), the bottom of the second connecting rod (3015) is fixedly connected to a conical filter (3016), the bottom of the conical filter (3016) is fixedly connected to a hollow conical ring (3017), the bottom of the hollow conical ring (3017) is rotatably connected to the guide ring (3012) via a bearing, wherein the second motor (309) can drive the conical filter (3016) to rotate and filter the gas through the conical filter (3016).

7. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 6, characterized in that: The inner wall of the second shell (307) is fixedly connected to a right-angle plate (3013), and the outer wall of the right-angle plate (3013) is fixedly connected to a nozzle (3014). The nozzle (3014) is fixed on the inclined surface of the right-angle plate (3013), so that the water mist sprayed by the nozzle (3014) forms a certain angle with the conical filter (3016).

8. The dust separation device for recycling recycled PET used in the production of ultra-fine denier filaments according to claim 7, characterized in that: The top of the guide ring (3012) is fixedly connected to the hollow column three (3010). The top of the hollow column three (3010) is fixedly connected to the outer shell two (307). The outer wall of the hollow column three (3010) is provided with a notch (3011). The notch (3011) passes through the hollow column three (3010) and extends to the inner wall of the hollow column three (3010), wherein the notch (3011) can allow the cleaned sewage to flow between the outer shell two (307) and the guide ring (3012).

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