Dust removal device

Abstract

The dust removal device comprises two dust removal assemblies, the two dust removal assemblies are arranged in a spaced mode, a laser working area is formed between the two dust removal assemblies, each dust removal assembly is provided with an air blowing part and an air suction part, the side, located in the laser working area, of each air blowing part is provided with an air suction port, and the side, located in the laser working area, of each air blowing part is provided with an air blowing port; the two sets of dust removal assemblies are used for conducting air suction on the air suction part of one dust removal assembly when the air blowing part of one dust removal assembly blows air, and each dust removal assembly is used for circularly and alternately executing air suction and air blowing operation. The moving direction of carbon fiber dust and chippings generated by laser engraving is opposite to the moving direction of laser engraving after the dust removal device sucks air and blows air, so that the carbon fiber dust and chippings generated by laser engraving cannot be accumulated on a laser moving light path; and heat accumulation generated by laser engraving on the surface of the carbon fiber composite material is reduced through air suction and air blowing operation, and the laser engraving quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal during carbon fiber laser processing, in particular to a dust removal device. Background Art

[0002] At present, carbon fiber composite materials are mostly used for the surfaces of aircraft and automobiles. In the prior art, the surface of carbon fiber composite materials is engraved by laser. During the laser processing of carbon fiber composite materials, the direction of the laser is cyclically changed (for example, the laser light path is engraved from left to right, and then engraved from right to left, and this cycle is repeated). During the engraving process, carbon fiber composite materials will produce carbon fiber dust and debris after engraving. The existing dust removal equipment can only perform large-scale one-way suction dust removal, but when the suction direction of the suction dust removal is opposite to the direction of laser travel (such as the laser is engraved from right to right and left, and the dust removal device sucks to the left), the carbon fiber dust and debris that have been engraved will move to the left under the suction of the dust removal device, which is easy to suck the carbon fiber dust and debris into the laser light path, seriously affecting the quality of laser engraving, and the heat-affected zone generated by the laser heat accumulation will seriously affect the engraving quality, and it is difficult to effectively and accurately reduce the heat accumulation effect generated by the laser.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The utility model provides a dust removal device.

[0005] The utility model adopts the following technical solutions:

[0006] A dust removal device, comprising:

[0007] Two groups of dust removal components are arranged at intervals, and a laser working area is formed between the two groups of dust removal components. The two groups of dust removal components each have a blowing part and an air suction part. The air blowing part is located at one side of the laser working area and an air suction port is arranged. The air blowing part is located at one side of the laser working area and has an air blowing port. The two groups of dust removal components are used for when the air blowing part of one blows air while the air suction part of the other inhales air. Each of the dust removal components is used for cyclically and alternately performing air suction and air blowing operations.

[0008] Optionally, the dust removal assembly includes a plurality of dust removal units, each of which is arranged in sequence, and each of which has the blowing part and the suction part;

[0009] The dust removal units of the two groups of dust removal components are opposite to each other.

[0010] Optionally, the air suction portion has a connection surface for connection and fixation;

[0011] The air blowing portion is located at a side of the air suction portion away from the connecting surface.

[0012] Optionally, the blowing part includes a blowing connection nozzle and a plurality of blowing ports;

[0013] Each of the air blowing ports is located at a side of the air blowing portion close to the laser working area, and the air blowing connection nozzle is located at a side of the air blowing portion away from the laser working area;

[0014] The air blowing connection nozzle is connected to each of the air blowing ports.

[0015] Optionally, in two dust removal units located opposite to each other in the two groups of the dust removal assemblies, the air blowing port of one extends obliquely toward the air suction port of the other.

[0016] Optionally, the air suction part includes a collection chamber and an air suction connection nozzle;

[0017] The air suction port and the air suction connection nozzle are both connected to the collection chamber, and the air suction connection nozzle is located on a side of the air suction part away from the laser working area.

[0018] Optionally, the air suction portion has an end plate on a side facing the laser working area;

[0019] The air intake port includes a plurality of communication holes arranged on the end plate.

[0020] Optionally, two adjacent dust removal units may be movably connected.

[0021] Optionally, a first connecting portion and a second connecting portion are respectively provided on both sides of the dust removal unit;

[0022] In two adjacent dust removal units, the first connection portion of one is hinged to the second connection portion of the other.

[0023] Optionally, the dust removal units at two opposite ends of the two groups of dust removal assemblies are connected via a connecting piece.

[0024] By adopting the above technical solution, the utility model has the following beneficial effects:

[0025] The dust removal device of the present application, when the laser is performing an engraving operation, the carbon fiber dust fragments generated by the laser engraving are sucked and blown by the dust removal device and move in a direction opposite to the direction of the laser engraving movement, so that the carbon fiber dust fragments generated by the laser engraving will not accumulate on the optical path of the laser movement, and the suction and blowing operations reduce the heat accumulation generated by the laser engraving on the surface of the carbon fiber composite material, effectively improving the quality of laser engraving.

[0026] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0028] Figure 1 A schematic diagram of the structure of a dust removal device provided in an embodiment of the present application;

[0029] Figure 2 Another perspective view of the dust removal device provided in the embodiment of the present application;

[0030] Figure 3 A schematic diagram of the structure of a dust removal unit of a dust removal device provided in an embodiment of the present application;

[0031] Figure 4 Another perspective view of the dust removal unit of the dust removal device provided in the embodiment of the present application;

[0032] Figure 5 A schematic structural diagram of the air source mechanism of the dust removal device provided in an embodiment of the present application.

[0033] In the figure, the dust removal component 1, the dust removal unit 11, the blowing part 111, the blowing connecting nozzle 1111, the blowing port 1112, the suction part 112, the connecting surface 1121, the suction connecting nozzle 1122, the suction port 1123, the first connecting part 113, the connecting hole 1131, the second connecting part 114, the pin 115, the connecting piece 12, the air source mechanism 2, the air compressor component 21, the air compressor connecting pipe 211, the air compressor switch 212, the air compressor 213, the suction pump component 22, the suction pump connecting pipe 221, the suction pump 222, the exhaust power interface 23, the blowing power interface 24, the suction reversing valve 25, and the blowing reversing valve 26.

[0034] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figures 1 to 5 As shown, an embodiment of the present application provides a dust removal device, comprising: two groups of dust removal components 1, the two groups of dust removal components 1 are arranged at intervals, a laser working area is formed between the two groups of dust removal components 1, the two groups of dust removal components 1 have a blowing part 111 and an air suction part 112, the blowing part 111 is located on one side of the laser working area and an air suction port 1123 is provided, the blowing part 111 is located on one side of the laser working area and has a blowing port 1112, the two groups of dust removal components 1 are used for when the blowing part 111 of one blows air, the air suction part 112 of the other inhales air, and each of the dust removal components 1 is used for cyclically and alternately performing suction and blowing operations. For example: when laser engraving a carbon fiber composite material, when the laser moves from left to right in the laser working area to perform the engraving operation, the air intake port 1123 of the dust removal component 1 located on the left side of the laser working area performs an air intake operation, and the air blow port 1112 is closed, and the air blow port 1112 of the dust removal component 1 located on the right side performs an air blowing operation, and the air intake port 1123 is closed; when the laser moves from right to left in the laser working area to perform the engraving operation, the air intake port 1112 of the dust removal component 1 located on the right side of the laser working area performs an air blowing operation, and the air intake port 1123 is closed, and the air intake port 1123 of the dust removal component 1 located on the right side performs an air intake operation, and the air blow port 1112 is closed. The dust removal device of the present application, when the laser is performing an engraving operation, the carbon fiber dust fragments generated by the laser engraving are sucked and blown by the dust removal device and move in a direction opposite to the direction of the laser engraving movement, so that the carbon fiber dust fragments generated by the laser engraving will not accumulate on the optical path of the laser movement, and the suction and blowing operations reduce the heat accumulation generated by the laser engraving on the surface of the carbon fiber composite material, effectively improving the quality of laser engraving.

[0039] It should be noted that in the embodiment of the present application, the start and stop control of the blowing and suction of the dust removal components on both sides can be manually controlled or automatically controlled. Automatic control can be achieved by setting a visual sensor, proximity switch or other intelligent method to assist in the movement direction of the laser light path focused and deflected by the laser galvanometer of the monitoring device (such as engraving equipment), thereby automatically controlling the blowing and suction actions of the dust removal components on both sides. The present application does not limit the control principle of the above control process.

[0040] like Figure 1 and Figure 2 As shown, the dust removal assembly 1 includes a plurality of dust removal units 11, each of which is arranged in sequence, and each of which has the blowing part 111 and the suction part 112. The dust removal units 11 of the two groups of dust removal assemblies 1 are opposite to each other. When the laser is performing engraving operations, the plurality of the blowing parts 111 and the corresponding suction parts 112 in the entire laser working area work together, so that the wind control in the entire laser working area is more uniform, and the carbon fiber dust and debris generated by laser engraving are removed more cleanly.

[0041] like Figure 2 As shown, the air suction part 112 has a connection surface 1121 for connection and fixing. The connection surface 1121 can be bonded to both sides of the surface of the area to be processed by colloid, so that the area required for laser engraving is located in the middle of the two dust removal components 1. The air blowing part 111 is located on the side of the air suction part 112 away from the connection surface 1121. The air blowing part 111 is on the upper side, and the air suction part 112 is on the lower side. The air blowing part 111 is connected to the upper surface of the air suction part 112. The air suction part 112 is closer to the surface where the laser working area is located, which is more conducive to sucking the carbon fiber dust and debris generated by laser engraving into the air suction part 112.

[0042] In one possible embodiment, Figure 1 and Figure 2As shown, the air blowing part 111 includes an air blowing connection nozzle 1111 and a plurality of air blowing ports 1112. Each of the air blowing ports 1112 is located at a side of the air blowing part 111 close to the laser working area, and the air blowing connection nozzle 1111 is located at a side of the air blowing part 111 away from the laser working area. The air blowing connection nozzle 1111 is connected to each of the air blowing ports 1112. The air blowing part 111 has an air blowing cavity, and the air blowing cavity is connected to the air blowing port 1112 and the air blowing connection nozzle 1111. The air blowing connection nozzle 1111 is connected to the air source mechanism 2 through a pipeline (which can be a hose). The gas generated by the air source mechanism 2 enters the blowing cavity from the blowing connecting nozzle 1111 through the pipeline, and is then blown out from the multiple blowing ports 1112. The multiple blowing ports 1112 make the blown gas more evenly distributed, and the aperture of each blowing port 1112 is small, so the wind speed flowing out from the blowing port 1112 is also high and the wind force is strong, which can effectively blow away the carbon fiber dust and debris generated by laser engraving, thereby achieving the dust removal effect.

[0043] In the two dust removal units 11 located opposite to each other in the two groups of dust removal assemblies 1, the blowing port 1112 of one extends obliquely toward the suction port 1123 of the other. The suction port 1123 is a channel opening inclined toward one side of the surface of the area to be processed, and the gas blown out from one side of the suction port 1123 blows to the surface of the area to be processed, and then enters the suction port 1123 of the opposite dust removal unit 11, so as to take away the carbon fiber dust and debris generated by the laser engraving and enter the suction port 1123 of the opposite dust removal unit 11, thereby achieving the dust removal effect.

[0044] like Figure 1 and Figure 2 As shown, the air suction part 112 includes a collection chamber and an air suction connection nozzle 1122. The air suction port 1123 and the air suction connection nozzle 1122 are both connected to the collection chamber, and the air suction connection nozzle 1122 is located on the side of the air suction part 112 away from the laser working area. The air suction connection nozzle 1122 is connected to the air source mechanism 2 through a pipeline (which can be a hose). The air source mechanism 2 sucks the carbon fiber dust and debris generated by the laser engraving from the air suction port 1123 into the collection chamber. There is a filter in the collection chamber, and the filter at least covers the inner opening of the air suction connection nozzle 1122 to prevent the dust and debris from being sucked out from the air suction connection nozzle 1122.

[0045] The suction part 112 has an end plate on one side facing the laser working area, and the suction port 1123 includes a plurality of connecting holes arranged on the end plate. The plurality of connecting holes are arranged to make the suction airflow uniform, facilitate the absorption of more dust and debris, and achieve good dust removal effect.

[0046] Two adjacent dust removal units 11 can be movably connected. Currently, carbon fiber composite materials are mostly used for aircraft and automobile surfaces, and are usually curved. When performing laser engraving operations, the area of ​​the engraved part can be roughly measured in advance, and the number of the dust removal units 11 can be selected to adapt to the size of the engraved part. Then, the connection surface 1121 of each dust removal unit 11 can be stably attached to both sides of the laser working area, which can be applied to curved surface structures and has a better dust removal effect.

[0047] In a possible embodiment, the first connection part 113 and the second connection part 114 are respectively provided on both sides of the dust removal unit 11. In two adjacent dust removal units 11, the first connection part 113 of one and the second connection part 114 of the other are hinged. The first connection part 113 may include two lugs, the two lugs are arranged at intervals, and the lugs have a connection hole 1131. The second connection part 114 includes a middle body, and the middle body has a through groove. When the two adjacent dust removal units 11 are connected, the middle body is located between the two lugs, and the two connection holes 1131 are opposite to the through grooves, and then the pin 115 is used to pass through the connection hole 1131 and the through groove in sequence. The two adjacent dust removal units 11 can rotate with the pin 115 as the axis, so that the two adjacent dust removal units 11 on each dust removal assembly 1 can be movably connected to adapt to the curved surface structure, so that the connection surface 1121 of each dust removal unit 11 fits the surface of the workpiece to be processed.

[0048] The dust removal units 11 at both ends of the two groups of dust removal components 1 are connected by a connector 12. The number of dust removal units 11 used in each group can be adjusted according to the size of the area of ​​the laser engraving area required for the workpiece. The modular design of the dust removal units 11 is convenient for adjusting the number of uses according to actual needs, with stronger applicability and good user experience. The connector 12 may include two telescopic rods, which are respectively located at the two ends of the dust removal components 1, and each of the telescopic rods is respectively connected to the dust removal units 11 at the ends of the two dust removal components 1. The telescopic rod can be adjusted in length or fixed in length to keep the position between the two groups of dust removal components 1 constant. The length of the telescopic rod can be adjusted according to the size of the workpiece to be processed, so that the two dust removal components 1 are stably located on both sides of the area to be processed. The two ends of the telescopic rod can be respectively inserted into the first connecting portion 113 and the second connecting portion 114 on the dust removal units 1 at the ends of the two dust removal components 1. The telescopic rod may include a first rod body and a second rod body, the diameter of the first rod body may be smaller than the diameter of the second rod body, the second rod body is a hollow tube, the first rod body may be slidably inserted into the interior of the second rod body, the first rod body and the second rod body may slide relative to each other to adjust the overlapping length of the first rod body and the second rod body, and fix them, the second rod body has a plurality of fixing holes, each of the fixing holes is sequentially spaced along the length direction of the second rod body, the first rod body may have an elastic protrusion, the elastic protrusion may be snapped into different fixing holes to fix the position of the first rod body and the second rod body. Pressing the elastic protrusion may cause the elastic protrusion to disengage from the fixing hole, so that the first rod body and the second rod body are unstuck, and the two may slide relative to each other to adjust the overlapping length, and after adjusting the total length of the telescopic rod, the positions of the two rod bodies are fine-tuned so that the elastic snapping protrusion snaps into the corresponding fixing hole, thereby fixing the relative position of the first rod body and the second rod body.

[0049] The first rod body can pass through the connecting hole 1131 of the first connecting part 113, and the second rod body can pass through the through groove of the second connecting part 114. The first rod body can be threadedly connected with the first nut, the second nut, the third nut and the fourth nut. The first nut and the second nut are located on both sides of the first connecting part, and the third nut and the fourth thread are respectively arranged on both sides of the second connecting part, thereby limiting and fixing the relative position of the dust removal unit 11 and the telescopic rod.

[0050] In one possible embodiment, Figure 5As shown, the dust removal device of the present application also includes an air source mechanism 2, and the air source mechanism 2 has an air suction power interface 23 and an air blowing power interface 24. The air suction power interface 23 is connected to the air suction part 112, and the air suction power interface 23 is connected to the air suction port 1123. The air blowing power interface 24 is connected to the air blowing part 111, and the air blowing power interface 24 is connected to the air blowing port 1112. When the laser is performing engraving operations, the dust and debris generated by the laser engraving are more cleanly removed by the dust removal components 1 on both sides by suction or blowing, and the operation of suction or blowing on both sides reduces the heat accumulation generated by the laser engraving on the surface of the carbon fiber composite material, which effectively improves the quality of laser engraving.

[0051] like Figure 5 As shown, the air source mechanism 2 includes an air compressor assembly 21 and an air suction pump assembly 22. The air compressor assembly 21 includes an air compressor connecting pipe 211, an air compressor switch 212 and an air compressor 213. The air suction pump assembly 22 includes an air suction pump connecting pipe 221 and an air suction pump 222. The air suction power interface 23 is connected to the air suction pump assembly 22. The air blowing power interface 24 is connected to the air compressor assembly 21. The air suction power interface 23 is connected to the air suction pump 222. The air blowing power interface 24 is connected to the air compressor 213.

[0052] In a possible implementation scheme, the air source mechanism 2 includes an air suction reversing valve 25 and an air blowing reversing valve 26. Two air extraction power interfaces 23 are provided on the air suction reversing valve 25, and two air blowing power interfaces 24 are provided on the air blowing reversing valve 26. The two groups of dust removal components 1 are provided with a blowing part 111 and an air suction part 112. The two air extraction power interfaces 23 are respectively connected to the air suction parts 112 on the two groups of dust removal components 1. The two air blowing power interfaces 24 are respectively connected to the air blowing parts 111 on the two groups of dust removal components 1. When the air suction reversing valve 25 controls one of the two air extraction power interfaces 23 to be turned on, the other is turned off. When the air blowing reversing valve 26 controls one of the two air blowing power interfaces 24 to be turned on, the other is turned off. When the air source mechanism 2 controls the air extraction power interface 23 connected to one of the dust removal components 1 to be turned on, the air blowing power interface 24 connected to another of the dust removal components 1 is controlled to be turned on. The air source mechanism 2 can control the two air extraction power interfaces 23 to be turned on alternately and cyclically. The two air extraction power interfaces 23 are respectively the first air extraction power interface and the second air extraction power interface, and the two air blowing power interfaces 24 are respectively the first air blowing power interface and the second air blowing power interface. The two groups of dust removal components 1 are respectively the left dust removal component and the right dust removal component. For example, the first air extraction power interface is connected to the suction part 112 on the left dust removal component, the second air extraction power interface is connected to the suction part 112 on the right dust removal component, the first air blowing power interface is connected to the blowing part 111 on the left dust removal component, and the second air blowing power interface is connected to the blowing part 111 on the right dust removal component. When the air suction reversing valve 25 controls the first air extraction power interface to be turned on for a certain period of time, the second air extraction power interface is turned off, and the air source mechanism 2 controls the first air blowing power interface to be turned off and the second air blowing power interface to be turned on within the time period. After a certain period of time, the air suction reversing valve 25 controls the first air extraction power interface to be turned off and the second air extraction power interface to be turned on, and the air source mechanism 2 controls the first air blowing power interface to be turned on and the second air blowing power interface to be turned off, and the operation is repeated alternately.

[0053] One of the air extraction power interfaces 23 is connected to each air suction part 112 of one of the dust removal components 1 through multiple pipes, and another of the air extraction power interfaces 23 is connected to each air suction part 112 of one of the dust removal components 1 through multiple pipes. One of the air blowing power interfaces 24 is connected to each air blowing part 111 of one of the dust removal components 1 through multiple pipes, and another of the air blowing power interfaces 24 is connected to each air blowing part 111 of another of the dust removal components 1 through multiple pipes.

[0054] The method for using the dust removal device of the present application includes:

[0055] Step S1: Determine the engraving part of the workpiece: roughly measure the area of ​​the workpiece in advance, and select the required number of dust removal units 11 to adapt to the area size of the engraving part;

[0056] Step S2: fix two sets of dust removal components 1 on the workpiece and arrange them on both sides of the engraving part: the workpiece can be a structure of a certain part of an airplane or a car, and fix the dust removal units 11 of the two sets of dust removal components 1 on both sides of the workpiece by bonding;

[0057] Step S3: Control the air source mechanism 2 to start: After the air source mechanism 2 is started, the device (such as engraving device) can perform engraving operations back and forth in the laser working area.

[0058] In step S1 , the size of the engraved part is measured, the number of dust removal units 11 of the dust removal assembly 1 is determined according to the size of the engraved part, and the dust removal assembly 1 is assembled.

[0059] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A dust removal device, characterized in that: The invention comprises two groups of dust removal components, which are arranged at intervals to form a laser working area between the two groups of dust removal components. The two groups of dust removal components each have a blowing part and an air suction part. The air blowing part is located at one side of the laser working area and an air suction port is arranged thereon. The air blowing part is located at one side of the laser working area and has an air blowing port. The two groups of dust removal components are used for when the air blowing part of one blows air while the air suction part of the other inhales air. Each of the dust removal components is used for cyclically and alternately performing air suction and air blowing operations.

2. The dust removal device according to claim 1, characterized in that: The dust removal assembly includes a plurality of dust removal units, each of which is arranged in sequence, and each of which has the blowing part and the suction part; The dust removal units of the two groups of dust removal components are opposite to each other.

3. The dust removal device according to claim 2, characterized in that: The air suction part has a connection surface for connection and fixing; The air blowing portion is located at a side of the air suction portion away from the connecting surface.

4. The dust removal device according to claim 3, characterized in that: The blowing part comprises a blowing connection nozzle and a plurality of blowing ports; Each of the air blowing ports is located at a side of the air blowing portion close to the laser working area, and the air blowing connection nozzle is located at a side of the air blowing portion away from the laser working area; The air blowing connection nozzle is connected to each of the air blowing ports.

5. The dust removal device according to claim 4, characterized in that: In the two dust removal units located opposite to each other in the two groups of dust removal components, the air blowing port of one extends obliquely toward the air suction port of the other.

6. The dust removal device according to claim 1, characterized in that: The air suction part comprises a collecting chamber and an air suction connection nozzle; The air suction port and the air suction connection nozzle are both connected to the collection chamber, and the air suction connection nozzle is located on a side of the air suction part away from the laser working area.

7. The dust removal device according to claim 6, characterized in that: The air suction part has an end plate on one side facing the laser working area; The air intake port includes a plurality of communication holes arranged on the end plate.

8. The dust removal device according to any one of claims 2 to 7, characterized in that: Two adjacent dust removal units are movably connected.

9. The dust removal device according to claim 8, characterized in that: The first connecting portion and the second connecting portion are respectively provided on both sides of the dust removal unit; In two adjacent dust removal units, the first connection portion of one is hinged to the second connection portion of the other.

10. The dust removal device according to any one of claims 2 to 7, characterized in that: The dust removal units at two opposite ends of the two groups of dust removal components are connected through a connecting piece.

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