Dust collection device for woven bag processing compound machine and use method of dust collection device

By using a vacuum cleaner in the woven bag processing composite machine, the black spots or stains caused by fine granular impurities during the woven bag processing process are solved, and the efficient removal of fine impurities on both sides of the cloth is achieved, and the processing quality is improved.

CN119553486APending Publication Date: 2025-03-04SHAANXI CHANGHONG PLASTIC COLOR PRINTING CO LTD
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Patent Information

Application Number
CN202411671604.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-03-04

AI Technical Summary

Technical Problem

During the processing of the woven bag, the wire friction and the friction in the composite machine lead to the generation of fine granular impurities, resulting in black spots or stains on the surface of the bag after color printing, affecting the cleanliness and aesthetics of the packaging bag.

Method used

A vacuum suction device for a woven bag processing composite machine is designed, including a vacuum nozzle assembly, an airflow transmission assembly and a high-pressure air extraction device. A negative pressure suction force is generated through the vacuum suction through the vacuum nozzle assembly. The airflow transmission assembly filters impurities in the gas and sucks away the impurities through the high-pressure air extraction device.

Benefits of technology

Effectively removes fine impurities on the surface and bottom surface of the cloth sheet, solves the problem of black spots or stains in the finished product after the woven bag is combined, and improves the processing quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a dust collection device for a woven bag processing compound machine and a use method of the dust collection device, and relates to the technical field of woven bag processing, the dust collection device comprises a dust collection nozzle assembly, and a linear dust collection through hole is formed in the side, attached to a cloth piece, of the dust collection nozzle assembly; the high-pressure air extractor is used for extracting air in the dust collection nozzle assembly; and the airflow transmission assembly is fixedly arranged between the dust collection nozzle assembly and the high-pressure air extractor, and the airflow transmission assembly is used for filtering out fine impurities mixed in the air while transmitting the air. The dust collection device composed of the dust collection nozzle assembly with the linear dust collection through hole, the airflow conveying assembly and the high-pressure air extractor is additionally arranged on the upper face and the lower face of the cloth piece, and tiny impurities left on the upper face and the lower face of the cloth piece can be removed in the cloth piece conveying process; and the problem that black spots or stains exist in a finished product after the woven bag is compounded is effectively solved, so that the processing quality of the woven bag is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of woven bag processing, and in particular to a dust collecting device for a woven bag processing compound machine and a use method thereof. Background Art

[0002] In the daily processing of color woven bags for composite food, when the raw materials of color woven bags are processed in the composite machine, during the weaving process of the woven bags, due to the long-term friction of the silk thread during the movement, it is easy to produce fine, usually invisible to the naked eye, fine granular impurities, or during the composite process in the composite machine, the cloth pieces are transported through multiple guide rollers, and the friction of the cloth when moving forward is easy to produce fine particles or fine dust;

[0003] These tiny impurities are directly compounded in the interlayer between the color film and the woven cloth, causing black spots or stains on the surface of the bag after color printing, which directly affects the cleanliness and appearance of the packaging bag, resulting in an increase in the number of defective products. Rework and cleaning will increase the processing cost of the colored woven bags.

[0004] Therefore, in order to solve the above problems, a dust collecting device for a woven bag processing compound machine and a use method thereof are proposed. Summary of the invention

[0005] The object of the present invention is to provide a dust suction device for a woven bag processing compound machine and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a dust collecting device for a woven bag processing compound machine, comprising:

[0007] A dust suction nozzle assembly, wherein a dust suction through hole in a straight line is provided on one side of the dust suction nozzle assembly that is attached to the cloth sheet;

[0008] A high-pressure suction device, which is used to extract the gas in the dust suction nozzle assembly, so that the dust suction through hole position of the dust suction nozzle assembly generates negative pressure suction to collect fine impurities on the cloth sheet;

[0009] An airflow transmission component is fixedly arranged between the dust suction nozzle component and the high-pressure air extraction device, and is used for transmitting the gas while filtering out fine impurities mixed in the gas.

[0010] Preferably, the dust nozzle assembly includes an outer shell, a side of the outer shell close to the dust suction hole is fixedly connected to an end cover, both ends of the end cover away from the outer shell are fixedly connected to strong permanent magnets, and the dust suction hole is located between the two strong permanent magnets and passes through both sides of the end cover.

[0011] Preferably, the airflow transmission component includes a conveying tube shell, in which a conveying chamber and a filter chamber that are interconnected are provided. The conveying chamber is located on the side of the filter chamber close to the dust nozzle assembly. A spiral sheet is fixedly connected to the inner wall of the conveying chamber, and a filter assembly is installed on the inner wall of the filter chamber.

[0012] Preferably, the filter assembly comprises a filter screen, a retaining frame is fixedly provided inside the filter screen, the filter screen is in the shape of a hollow cone with an inner diameter gradually increasing in a direction approaching the conveying cavity, and a semicircular head is fixedly connected to the end of the filter screen close to the conveying cavity.

[0013] Preferably, a connecting component is provided between the inner wall of the filter chamber and the filter screen, and the filter screen is rotatably connected to the inner wall of the filter chamber through the connecting component. A driven fan blade is provided on the side of the filter screen close to the high-pressure air extraction device, and a rotating shaft is fixedly connected between the driven fan blade and the semicircular head.

[0014] Preferably, the connecting assembly includes an annular seat, which is fixedly connected to the inner wall of the filter chamber, a connecting ring is fixedly connected to the side of the filter screen close to the driven fan blades, the outer wall of the connecting ring is rotatably connected to the inner wall of the annular seat, a bearing seat is fixedly connected to the inner wall of the annular seat and located at a position of the connecting ring close to the driven fan blades, and the middle part of the bearing seat is rotatably connected to the rotating shaft through a bearing.

[0015] Preferably, a material removing claw is fixedly connected to one side of the outer wall of the connecting ring close to the filter screen, and the side wall of the material removing claw fits into the side wall of the annular seat. A discharge port connected to the outside of the airflow transmission component is provided at the bottom of the inner wall of the filter cavity. An externally threaded pipe head is threadedly connected to the bottom of the discharge port through an internally threaded groove, and a dust collecting bottle is fixedly connected to one end of the externally threaded pipe head away from the discharge port.

[0016] Preferably, the dust collecting bottle comprises an upper bottle body and a lower bottle body, the lower bottle body is threadedly connected to the bottom of the upper bottle body, a conical protrusion protruding upward is fixedly connected to the inner side of the lower bottle body, a plurality of conical covers are fixedly connected to the inner cavity of the upper bottle body at intervals from top to bottom, leakage holes are opened in the middle of the plurality of conical covers, and the inner diameters of the plurality of leakage holes gradually increase in order from top to bottom.

[0017] Preferably, a connecting hose is fixedly connected to a side of the airflow transmission component close to the high-pressure air extraction device, and a connecting pipe head is fixedly connected between the connecting hose and the high-pressure air extraction device.

[0018] On the other hand, the present invention also provides a method for using a dust collection device for a woven bag processing composite machine, comprising the following steps:

[0019] Step 1: dust suction nozzle assemblies are installed on the upper and lower surfaces of the cloth piece transmitted in the compound machine, one side of each dust suction nozzle assembly is connected to the air flow transmission assembly, and the two air flow transmission assemblies are respectively connected to the same high-pressure exhaust device through connecting hoses, and the high-pressure exhaust device extracts the gas inside the dust suction nozzle assembly through the connecting hose and the air flow transmission assembly, so that negative pressure suction is generated at the dust suction through hole position of the dust suction nozzle assembly, and fine impurities on the surface of the cloth piece are sucked away with the gas, thereby realizing dust removal on both sides of the cloth piece;

[0020] Step 2: When the airflow passes through the filter, the fine impurities contained in the gas can be filtered out by using the aperture of the filter surface. At the same time, after the gas passing through the filter contacts the driven blades, the driven blades are driven to rotate. The driven blades drive the filter to rotate through the rotating shaft, so that the filter can use the centrifugal force to throw the impurities attached to the outer wall of the filter outward during the rotation process, and then cooperate with the effect of the airflow to concentrate the impurities in the direction of the annular seat;

[0021] Step three, while the filter rotates, the connecting ring will drive the material-prying claw to move along a circular trajectory along the side wall of the annular seat, and the impurities attached to the side wall of the annular seat will be pushed to the discharge port. The impurities will be accumulated and squeezed to enter the dust collection bottle from the discharge port for collection.

[0022] Technical effects and advantages of the present invention:

[0023] The present invention installs a dust suction device consisting of a dust suction nozzle assembly with a straight dust suction through hole, an air flow transmission assembly and a high-pressure exhaust device on the upper and lower surfaces of the cloth piece, so that fine impurities remaining on the upper and lower surfaces of the cloth piece can be removed during the cloth piece transmission process, effectively solving the problem of black spots or stains in the finished product after the woven bag is compounded, thereby improving the processing quality of the woven bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a front cross-sectional structural schematic diagram of the delivery pipe of the present invention.

[0026] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the conveying pipe of the present invention from the front.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter assembly of the present invention.

[0028] Figure 5 It is a front cross-sectional structural schematic diagram of the dust collecting bottle of the present invention.

[0029] In the figure: 100, dust suction nozzle assembly; 101, outer shell; 102, end cover; 103, dust suction through hole; 104, strong permanent magnet;

[0030] 200, air flow transmission component; 201, conveying tube shell; 202, conveying cavity; 203, filter cavity; 204, spiral sheet; 205, filter screen; 206, rotating shaft; 207, driven fan blade; 208, semicircular head; 209, connecting ring; 210, annular seat; 211, bearing seat; 212, material removal claw; 213, discharge port;

[0031] 300, high pressure air extraction device; 301, connecting hose; 302, connecting pipe head;

[0032] 400, dust collecting bottle; 401, external threaded pipe head; 402, upper bottle body; 403, conical cover; 404, leakage hole; 405, lower bottle body; 406, conical protrusion. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides Figure 1-Figure 5 The dust suction device for a woven bag processing composite machine shown in the figure comprises a dust suction nozzle assembly 100, a high-pressure suction device 300 and an air flow transmission assembly 200. The dust suction nozzle assembly 100 is attached to one side of the cloth sheet and is provided with a straight dust suction hole 103. The high-pressure suction device 300 is used to extract the gas in the dust suction nozzle assembly 100, so that the dust suction hole 103 of the dust suction nozzle assembly 100 generates a negative pressure suction force to collect fine impurities on the cloth sheet. The air flow transmission assembly 200 is fixedly arranged between the dust suction nozzle assembly 100 and the high-pressure suction device 300. The air flow transmission assembly 200 is used to filter out impurities in the gas while transmitting the gas. Small impurities mixed in; dust nozzle assemblies 100 are arranged on the upper and lower surfaces of the transmitted cloth piece, and the airflow transmission assembly 200 is installed on one side of the dust nozzle assembly 100, and the gas is discharged through a high-pressure suction device 300. Since the dust nozzle assembly 100 has a straight-line dust suction hole 103 in contact with the surface of the cloth piece, and the high-pressure suction device 300 draws out the gas in the dust nozzle assembly 100 through the airflow transmission assembly 200, the straight-line dust suction hole 103 generates a negative pressure suction effect on the surface of the cloth piece, so that the cloth piece can be dusted during the transmission process and the fine impurities remaining on the surface of the cloth piece are eliminated.

[0035] The dust suction nozzle assembly 100 includes an outer shell 101, a side of the outer shell 101 close to the dust suction through hole 103 is fixedly connected to an end cover 102, and both ends of the end cover 102 away from the outer shell 101 are fixedly connected to strong permanent magnets 104, the dust suction through hole 103 is located between the two strong permanent magnets 104 and passes through both sides of the end cover 102. The arrangement of the strong permanent magnets 104 allows the outer shell 101 to be fixed to the frame of the compound machine by magnetic attraction, making the installation more convenient;

[0036] Furthermore, a connecting hose 301 is fixedly connected to the side of the airflow transmission component 200 close to the high-pressure exhaust device 300, and a connecting pipe head 302 is fixedly connected between the connecting hose 301 and the high-pressure exhaust device 300. By utilizing the cooperation between the connecting hose 301 and the connecting pipe head 302, two vacuum nozzle assemblies 100 can share one high-pressure exhaust device 300, thereby reducing costs.

[0037] Among them, the airflow transmission component 200 includes a conveying tube shell 201, and a conveying chamber 202 and a filter chamber 203 that are interconnected are provided in the conveying tube shell 201. The conveying chamber 202 is located on the side of the filter chamber 203 close to the dust nozzle assembly 100. The inner wall of the conveying chamber 202 is fixedly connected with a spiral sheet 204, and the inner wall of the filter chamber 203 is installed with a filter assembly. The setting of the spiral sheet 204 can play a role in guiding the flow, making the gas transmission more stable.

[0038] In a preferred embodiment, the filter assembly includes a filter screen 205, a retaining frame is fixedly provided inside the filter screen 205, the filter screen 205 is in the shape of a hollow cone with an inner diameter gradually increasing in the direction close to the conveying chamber 202, a semicircular head 208 is fixedly connected to the end of the filter screen 205 close to the conveying chamber 202, a connecting assembly is provided between the inner wall of the filter chamber 203 and the filter screen 205, the filter screen 205 is rotatably connected to the inner wall of the filter chamber 203 through the connecting assembly, a driven fan blade 207 is provided on the side of the filter screen 205 close to the high-pressure exhaust device 300, and a rotating shaft 208 is fixedly connected between the driven fan blade 207 and the semicircular head 208. 06. The conical filter 205 increases the filtering area and improves the filtering effect. Together with the driven fan blades 207 and the rotating shaft 206, the flow of gas can be used to drive the driven fan blades 207 to rotate, so that the filter 205 can be driven to rotate through the rotating shaft 206, so that centrifugal force is generated on the filter 205, which can effectively prevent small impurities from remaining and accumulating on the outer wall of the filter 205 and affecting the filtering effect of the filter 205. In addition, the small impurities thrown out from the outer wall of the filter 205 due to the centrifugal force move with the flow direction of the airflow, reducing the residue of small impurities on the filter 205, so that the filter 205 has a self-cleaning effect.

[0039] Furthermore, the connecting component includes an annular seat 210, which is fixedly connected to the inner wall of the filter chamber 203, and a connecting ring 209 is fixedly connected to the side of the filter screen 205 close to the driven fan blade 207. The outer wall of the connecting ring 209 is rotatably connected to the inner wall of the annular seat 210, and a bearing seat 211 is fixedly connected to the inner wall of the annular seat 210 and located at a position on the side of the connecting ring 209 close to the driven fan blade 207. The middle part of the bearing seat 211 is rotatably connected to the rotating shaft 206 through a bearing. The annular seat 210 cooperates with the bearing seat 211 to enhance the load-bearing stability of the rotating shaft 206, so that the rotating shaft 206 can stably drive the filter screen 205 to rotate; the outer wall of the connecting ring 209 close to the filter screen 20 5 is fixedly connected to one side of the material-push claw 212, and the side wall of the material-push claw 212 is in contact with the side wall of the annular seat 210. A discharge port 213 communicating with the outside of the airflow transmission component 200 is provided at the bottom of the inner wall of the filter chamber 203. An externally threaded pipe head 401 is threadedly connected to the bottom of the discharge port 213 through an internally threaded groove. A dust collecting bottle 400 is fixedly connected to the end of the externally threaded pipe head 401 away from the discharge port 213. When the filter screen 205 rotates, the material-push claw 212 is driven to rotate in contact with the outer wall of the annular seat 210, and the impurities remaining on the outer wall of the annular seat 210 are pushed, so that the impurities are piled up together to increase their weight, so that they can gradually enter the dust collecting bottle 400 from the discharge port 213.

[0040] Among them, the dust collecting bottle 400 includes an upper bottle body 402 and a lower bottle body 405, the lower bottle body 405 is threadedly connected to the bottom of the upper bottle body 402, and a conical protrusion 406 protruding upward is fixedly connected to the inner side of the lower bottle body 405, and a plurality of conical covers 403 are fixedly connected to the inner cavity of the upper bottle body 402 at intervals from top to bottom, and leakage holes 404 are opened in the middle of the plurality of conical covers 403, and the inner diameters of the plurality of leakage holes 404 gradually increase in order from top to bottom. The setting of the multi-layer conical cover 403 can make it difficult for impurities entering the upper bottle body 402 to be discharged in the reverse direction, thereby playing a blocking role. In addition, the detachable upper bottle body 402 and the lower bottle body 405 facilitate the cleaning of the collected impurities.

[0041] A method for using a dust collecting device for a woven bag processing compound machine comprises the following steps:

[0042] Step 1: The dust nozzle assembly 100 is installed on the upper surface and the lower surface of the cloth piece transmitted in the compound machine. One side of each dust nozzle assembly 100 is connected to the air flow transmission assembly 200, and the two air flow transmission assemblies 200 are respectively connected to the same high-pressure exhaust device 300 through the connecting hose 301. The high-pressure exhaust device 300 extracts the gas inside the dust nozzle assembly 100 through the connecting hose 301 and the air flow transmission assembly 200, so that a negative pressure suction effect is generated at the position of the dust suction through hole 103 of the dust nozzle assembly 100, and fine impurities on the surface of the cloth piece are sucked away with the gas, thereby realizing dust removal on both sides of the cloth piece;

[0043] Step 2: When the airflow passes through the filter 205, the fine impurities contained in the gas can be filtered out by using the aperture of the filter 205 surface. At the same time, after the gas passing through the filter 205 contacts the driven blade 207, the driven blade 207 is driven to rotate. The driven blade 207 drives the filter 205 to rotate through the rotating shaft 206, so that the filter 205 can use the centrifugal force to throw out the impurities attached to the outer wall of the filter 205 during the rotation process, and then cooperate with the effect of the airflow to concentrate the impurities in the direction of the annular seat 210;

[0044] Step three, while the filter screen 205 rotates, it will drive the material-moving claw 212 to move along a circular trajectory along the side wall of the annular seat 210 through the connecting ring 209, and push the impurities attached to the side wall of the annular seat 210 to the discharge port 213. The impurities are accumulated and squeezed to enter the dust collecting bottle 400 from the discharge port 213 for collection.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust collecting device for a woven bag processing and compounding machine, characterized in that: include: A dust suction nozzle assembly (100), wherein a side of the dust suction nozzle assembly (100) that is attached to the cloth sheet is provided with a straight-line dust suction through hole (103); A high-pressure air extraction device (300), the high-pressure air extraction device (300) being used to extract the gas in the dust suction nozzle assembly (100), so that a negative pressure suction force is generated at the dust suction through hole (103) of the dust suction nozzle assembly (100) to collect fine impurities on the cloth sheet; An airflow transmission component (200) is fixedly arranged between the dust suction nozzle component (100) and the high-pressure air extraction device (300), and the airflow transmission component (200) is used to filter out fine impurities mixed in the gas while transmitting the gas.

2. A dust collecting device for a woven bag processing and compounding machine according to claim 1, characterized in that: The dust suction nozzle assembly (100) comprises an outer shell (101); a side of the outer shell (101) close to a dust suction through hole (103) is fixedly connected to an end cover (102); both ends of the end cover (102) away from the outer shell (101) are fixedly connected to strong permanent magnets (104); and the dust suction through hole (103) is located between the two strong permanent magnets (104) and passes through both sides of the end cover (102).

3. A dust collecting device for a woven bag processing and compounding machine according to claim 2, characterized in that: The airflow transmission component (200) comprises a delivery tube shell (201), wherein a delivery chamber (202) and a filter chamber (203) which are interconnected are arranged in the delivery tube shell (201), wherein the delivery chamber (202) is located on a side of the filter chamber (203) close to the dust nozzle component (100), a spiral sheet (204) is fixedly connected to the inner wall of the delivery chamber (202), and a filter component is installed on the inner wall of the filter chamber (203).

4. A dust collecting device for a woven bag processing and compounding machine according to claim 3, characterized in that: The filter assembly comprises a filter screen (205), a retaining frame is fixedly provided inside the filter screen (205), the filter screen (205) is in the shape of a hollow cone with an inner diameter gradually increasing in a direction close to the conveying cavity (202), and a semicircular head (208) is fixedly connected to the end of the filter screen (205) close to the conveying cavity (202).

5. A dust collecting device for a woven bag processing and compounding machine according to claim 4, characterized in that: A connecting assembly is provided between the inner wall of the filter cavity (203) and the filter screen (205), and the filter screen (205) is rotatably connected to the inner wall of the filter cavity (203) via the connecting assembly. A driven fan blade (207) is provided on a side of the filter screen (205) close to the high-pressure air extraction device (300), and a rotating shaft (206) is fixedly connected between the driven fan blade (207) and the semicircular head (208).

6. A dust collecting device for a woven bag processing and compounding machine according to claim 5, characterized in that: The connection assembly comprises an annular seat (210), wherein the annular seat (210) is fixedly connected to the inner wall of the filter cavity (203), a connecting ring (209) is fixedly connected to the side of the filter screen (205) close to the driven fan blade (207), the outer wall of the connecting ring (209) is rotatably connected to the inner wall of the annular seat (210), and a bearing seat (211) is fixedly connected to the inner wall of the annular seat (210) and located at a position on the side of the connecting ring (209) close to the driven fan blade (207), and the middle part of the bearing seat (211) is rotatably connected to the rotating shaft (206) via a bearing.

7. A dust collecting device for a woven bag processing and compounding machine according to claim 6, characterized in that: A material-discharging claw (212) is fixedly connected to one side of the outer wall of the connecting ring (209) close to the filter screen (205), and the side wall of the material-discharging claw (212) is in contact with the side wall of the annular seat (210). A material discharge port (213) connected to the outside of the airflow transmission component (200) is provided at the bottom of the inner wall of the filter cavity (203), and an externally threaded pipe head (401) is threadedly connected to the bottom of the material discharge port (213) through an internally threaded groove, and a dust collecting bottle (400) is fixedly connected to one end of the externally threaded pipe head (401) away from the material discharge port (213).

8. The dust collecting device for a woven bag processing and compounding machine according to claim 7, characterized in that: The dust collecting bottle (400) comprises an upper bottle body (402) and a lower bottle body (405), wherein the lower bottle body (405) is threadedly connected to the bottom of the upper bottle body (402), and a conical protrusion (406) protruding upward is fixedly connected to the inner side of the lower bottle body (405), and a plurality of conical covers (403) are fixedly connected to the inner cavity of the upper bottle body (402) at intervals from top to bottom, and a leakage hole (404) is provided in the middle of each of the plurality of conical covers (403), and the inner diameters of the plurality of leakage holes (404) gradually increase in order from top to bottom.

9. A dust collecting device for a woven bag processing and compounding machine according to claim 8, characterized in that: A connecting hose (301) is fixedly connected to one side of the airflow transmission component (200) close to the high-pressure air extraction device (300), and a connecting pipe head (302) is fixedly connected between the connecting hose (301) and the high-pressure air extraction device (300).

10. The method for using the dust collecting device for a woven bag processing and compounding machine according to claim 9, characterized in that: The following steps are involved: Step 1: dust suction nozzle assemblies (100) are installed on the upper and lower surfaces of the cloth sheet being transported in the compound machine, one side of each dust suction nozzle assembly (100) is connected to the air flow transmission assembly (200), and the two air flow transmission assemblies (200) are respectively connected to the same high-pressure exhaust device (300) through the connecting hose (301), and the high-pressure exhaust device (300) extracts the gas inside the dust suction nozzle assembly (100) through the connecting hose (301) and the air flow transmission assembly (200), so that negative pressure suction is generated at the dust suction through hole (103) of the dust suction nozzle assembly (100), and fine impurities on the surface of the cloth sheet are sucked away with the gas, thereby achieving dust removal on both sides of the cloth sheet; Step 2: When the airflow passes through the filter (205), the fine impurities contained in the air can be filtered out by utilizing the pore size of the filter (205) surface. At the same time, after the airflow passes through the filter (205) contacts the driven blade (207), the driven blade (207) is driven to rotate. The driven blade (207) drives the filter (205) to rotate through the rotating shaft (206), so that the filter (205) can use the centrifugal force to throw out the impurities attached to the outer wall of the filter (205) during the rotation process. Combined with the effect of the airflow, the impurities are concentrated in the direction of the annular seat (210); In step three, the filter screen (205) rotates and drives the material-moving claw (212) to move along a circular trajectory along the side wall of the annular seat (210) through the connecting ring (209), thereby pushing the impurities attached to the side wall of the annular seat (210) to the discharge port (213) and utilizing the accumulation and squeezing effect of the impurities to enter the dust collecting bottle (400) from the discharge port (213) for collection.