Cleaning device and middle-sweeping assembly

Abstract

The utility model discloses a kind of middle sweep subassembly and cleaning equipment, wherein, cleaning equipment includes shell, cover plate and rolling brush. Among them, shell is provided with accommodating cavity, accommodating cavity has opening. Cover plate is covered in shell, and cover plate is provided with through hole corresponding to opening, and the side of cover plate close to shell is provided with sealing structure, sealing structure is extended along the outer circumferential side of opening to seal the gap between shell and cover plate. Rolling brush is rotatably connected in accommodating cavity, and rolling brush is at least partially located in through hole. The utility model discloses middle sweep subassembly and cleaning equipment solve the poor sealing effect between middle sweep cover plate and air cavity of the middle sweep subassembly of cleaning equipment, and the problem of poor dust removal effect of middle sweep subassembly.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and more specifically, to a mid-sweeping component and a cleaning device. Background Technology

[0002] Currently, the connection between the housing and cover plate of the middle sweeping component of cleaning equipment is mainly a single-plane contact method. Although it can achieve a certain sealing effect to prevent negative pressure leakage in the air cavity (the accommodating cavity used to install structures such as roller brushes), when the housing or cover plate of the middle sweeping component is deformed by external force, the single-plane contact method may produce leakage points, which can easily lead to negative pressure leakage, poor sealing effect, and thus a decrease in the dust removal effect of the middle sweeping component. Utility Model Content

[0003] The main objective of this invention is to provide a mid-sweeping component and a cleaning device, so as to at least solve the problems of poor sealing effect between the mid-sweeping cover plate and the air cavity of the mid-sweeping component of the cleaning device, and poor dust removal effect of the mid-sweeping component.

[0004] According to one aspect of the present invention, a mid-scan assembly is provided, comprising:

[0005] A housing having a receiving cavity having an opening;

[0006] A cover plate is provided on the housing, and the cover plate is provided with a through hole corresponding to the opening. A sealing structure is provided on the side of the cover plate near the housing. The sealing structure extends along the outer periphery of the opening to seal the gap between the housing and the cover plate.

[0007] A roller brush, rotatably connected to the receiving cavity, and at least partially located within the through hole.

[0008] Furthermore, the sealing structure includes a sealing protrusion, and the housing is provided with a mating part that matches the sealing protrusion.

[0009] Furthermore, the top end of the sealing protrusion has a first sealing plane, and the side wall of the sealing protrusion opposite to the opening is provided with a second sealing plane.

[0010] Furthermore, the first sealing plane intersects with the second sealing plane, and the angle between the first sealing plane and the second sealing plane is greater than 90 degrees and less than 180 degrees.

[0011] Furthermore, a third sealing plane adapted to the first sealing plane is provided on the side of the mating part near the first sealing plane, and a fourth sealing plane adapted to the second sealing plane is provided on the side of the mating part near the second sealing plane.

[0012] Furthermore, an elastic sealing layer is provided between the first sealing plane and the third sealing plane, and between the second sealing plane and the fourth sealing plane. The cover plate is sealed to the housing through the elastic sealing layer, and the elastic sealing layer is configured as a corrugated structure and / or a flat structure.

[0013] Furthermore, a first clearance fitting part is provided on one side of the cover plate, and a second clearance fitting part is provided on the housing opposite to the first clearance fitting part. The first clearance fitting part and the second clearance fitting part surround to form a clearance hole. One end of the roller brush is rotatably disposed in the clearance hole. A sealing arc surface is provided on the inner wall surface of at least one of the first clearance fitting part and the second clearance fitting part. The sealing arc surface extends circumferentially along the clearance hole.

[0014] Furthermore, the intermediate sweeping assembly also includes a bearing component, which includes an inner ring and an outer ring that can rotate relative to each other. Along the circumference of the clearance hole, the outer ring is fixed to the inner wall surface of the clearance hole.

[0015] The roller brush is equipped with a rotating shaft. One end of the rotating shaft passes through the inner ring and is connected to an external driving component. The rotating shaft rotates relative to the clearance hole under the action of the external driving component.

[0016] Furthermore, the intermediate sweeping assembly also includes a seal. Along the length of the rotating shaft, the seal is disposed on the side of the bearing component away from the roller brush. Along the circumference of the clearance hole, the seal is sealed to the sealing arc surface. The seal is provided with a mating hole, through which the rotating shaft rotatably passes and is driven to connect with an external driving component.

[0017] According to another aspect of the present invention, a cleaning device is provided, the cleaning device including the above-described intermediate sweeping component.

[0018] In this invention, a sealing structure is provided on the side of the housing near the cover plate. This sealing structure extends along the outer periphery of the opening to seal the gap between the housing and the cover plate, preventing negative pressure leakage in the accommodating cavity and improving the sealing effect of the accommodating cavity of the cleaning assembly. Compared to the traditional single-plane contact method, this application uses a separate sealing structure to seal the gap between the housing and the cover plate, achieving a better sealing effect and preventing leakage points inherent in single-plane contact. This significantly reduces the risk of negative pressure leakage in the accommodating cavity and ensures its airtightness. The sealing structure extends along the outer periphery of the cavity opening, forming corresponding sealing areas on the outer periphery of the cavity, effectively sealing the gap between the cover plate and the housing, preventing negative pressure leakage within the accommodating cavity, and improving the cleaning effect of the cleaning equipment. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the scanning component disclosed in the embodiment of this utility model;

[0021] Figure 2 for Figure 1 AA section view in the middle;

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of M in the diagram;

[0023] Figure 4 This is a schematic diagram of the mid-scan component disclosed in an embodiment of the present utility model from another perspective;

[0024] Figure 5 This is a schematic diagram of the assembly of the cover plate and the roller brush of the sweeping component disclosed in this embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the cover plate of the mid-scan assembly disclosed in an embodiment of the present utility model;

[0026] Figure 7 for Figure 6 A magnified diagram of N in the diagram;

[0027] Figure 8 This is a schematic diagram of the housing of the mid-scan assembly disclosed in an embodiment of the present utility model;

[0028] Figure 9 This is a structural schematic diagram of the housing of the mid-scan component disclosed in an embodiment of the present utility model from another perspective.

[0029] The above figures include the following reference numerals:

[0030] 10. Housing; 11. Receiving cavity; 12. Mating part; 121. Third sealing plane; 122. Fourth sealing plane; 13. Second clearance groove; 14. Slot; 15. First limiting buckle; 151. Limiting rib; 111. Opening; 20. Cover plate; 21. Sealing structure; 211. First sealing plane; 212. Second sealing plane; 22. Through hole; 23. First clearance groove; 231. Clearance hole; 232. Sealing arc surface; 24. Buckle; 25. Second limiting buckle; 251. Actuating part; 30. Roller brush; 31. Rotating shaft; 40. Bearing component; 50. Sealing component; 51. Mating hole. Detailed Implementation

[0031] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] See Figures 1 to 9 As shown, according to an embodiment of this application, a mid-scan assembly is provided, including a housing 10, a cover plate 20, and a roller brush 30. The housing 10 has a receiving cavity 11 with an opening 111. The cover plate 20 covers the housing 10 and has a through hole 22 corresponding to the opening 111. A sealing structure 21 is provided on the side of the cover plate 20 near the housing 10, extending along the outer periphery of the opening 111 to seal the gap between the housing 10 and the cover plate 20. The roller brush 30 is rotatably connected to the receiving cavity 11, and at least partially located within the through hole 22.

[0035] In this embodiment, by providing a sealing structure 21 extending along the outer periphery of the opening 111 of the accommodating cavity 11 on the cover plate 20, the sealing structure 21 can seal the gap between the housing 10 and the cover plate 20, preventing negative pressure leakage in the accommodating cavity 11. Compared with the single-plane contact assembly method between the housing 10 and the cover plate 20, the sealing effect is better. The sealing structure 21 extends along the outer periphery of the opening 111, which can completely prevent leakage points between the housing 10 and the cover plate 20, improving the airtightness of the accommodating cavity 11. When the housing 10 or the cover plate 20 is deformed by external force, the sealing structure 21 can continue to seal the deformed position of the housing 10 or the cover plate 20, preventing negative pressure leakage in the accommodating cavity 11 due to leakage points caused by deformation, thus improving the sealing effect of the accommodating cavity 11. The roller brush 30 is at least partially disposed within the through hole 22 of the cover plate 20. When the roller brush 30 rotates relative to the receiving cavity 11, it can create a negative pressure state in the receiving cavity 11 to adsorb the debris on the cleaning surface into the receiving cavity 11. The sealing structure 21 can prevent the negative pressure in the receiving cavity 11 from leaking, thereby improving the cleaning efficiency of the middle sweeping component.

[0036] Furthermore, the sealing structure 21 includes a sealing protrusion, and the housing 10 is provided with a mating part 12 that matches the sealing protrusion. By setting the sealing structure 21 as a sealing protrusion and providing a mating part 12 on the housing 10 that matches the sealing protrusion, the sealing protrusion can be inserted into the mating part 12. This not only achieves sealing of the accommodating cavity 11, but also enhances the structural strength of the intermediate cleaning assembly, prevents deformation of the housing 10 and the cover plate 20, achieves double sealing of the accommodating cavity 11, and improves the sealing effect.

[0037] Optionally, the top of the sealing protrusion has a first sealing plane 211, and a second sealing plane 212 is provided on the side wall of the sealing protrusion away from the opening 111. The first sealing plane 211 and the second sealing plane 212 enable sealing in two directions, further reducing the risk of negative pressure leakage in the accommodating cavity 11. When a leak occurs near the first sealing plane 211 of the accommodating cavity 11, the second sealing plane 212 at the same location can continue to seal, improving the sealing effect and enhancing the cleaning capability of the intermediate cleaning assembly.

[0038] In this embodiment, along the outer circumference of the opening 111 of the accommodating cavity 11, the sealing structure includes multiple continuous or spaced sealing segments, each of which is configured as a sealing protrusion. When two sealing segments are continuously arranged, the sealing protrusions of the two sealing segments are sequentially connected along the outer circumference of the opening 111, or there is a discontinuity between the sealing protrusions of the two sealing segments along the height direction of the central scanning assembly (perpendicular to the first sealing plane 211). When two sealing segments are spaced apart, there is a separating segment between the two sealing segments spaced apart along the outer circumference of the opening 111.

[0039] Preferably, the first sealing plane 211 and the second sealing plane 212 intersect, and the included angle between the first sealing plane 211 and the second sealing plane 212 is greater than 90 degrees and less than 180 degrees. In this embodiment, the first sealing plane 211 and the second sealing plane 212 intersect, that is, the first sealing plane 211 and the second sealing plane 212 intersect and connect. Since it may be difficult to assemble the cover plate 20 and the housing 10 when the included angle θ between the first sealing plane 211 and the second sealing plane 212 is less than 90 degrees, setting the included angle θ between the first sealing plane 211 and the second sealing plane 212 to be greater than 90 degrees can make it easier to assemble the cover plate 20 and the housing 10. Setting the included angle θ between the first sealing plane 211 and the second sealing plane 212 to be less than 180 degrees can ensure that the first sealing plane 211 and the second sealing plane 212 achieve sealing in two directions, thereby improving the sealing effect.

[0040] Furthermore, such as Figure 3 , Figure 8 and Figure 9 As shown, a third sealing plane 121 adapted to the first sealing plane 211 is provided on the side of the mating part 12 near the first sealing plane 211, and a fourth sealing plane 122 adapted to the second sealing plane 212 is provided on the side of the mating part 12 near the second sealing plane 212. The third sealing plane 121 of the mating part 12 is parallel to the first sealing plane 211 of the sealing protrusion, and the fourth sealing plane 122 of the mating part 12 is parallel to the second sealing plane 212 of the sealing protrusion. That is, the included angle between the third sealing plane 121 and the fourth sealing plane 122 is θ. This ensures that the mating part 12 and the sealing protrusion better seal the gap between the housing 10 and the cover plate 20. In the assembled intermediate cleaning assembly, the first sealing plane 211 on the sealing protrusion abuts against the third sealing plane 121 of the mating part 12, and the second sealing plane 212 on the sealing protrusion abuts against the fourth sealing plane 122 of the mating part 12, so as to achieve a seal between the housing 10 and the cover plate 20, prevent the leakage of negative pressure in the accommodating cavity 11, and improve the sealing effect of the accommodating cavity 11.

[0041] Preferably, in this embodiment, elastic sealing layers are provided between the first sealing plane 211 and the third sealing plane 121, and between the second sealing plane 212 and the fourth sealing plane 122. The cover plate 20 is sealed to the housing 10 through the elastic sealing layer, which is configured as a flat plate structure. The elastic sealing layer has flexible deformation capability. When the housing 10 or the cover plate 20 is slightly deformed by external force, the elastic sealing layer can fill the gap by compressing or expanding itself, avoiding leakage caused by rigid contact. Even if the components undergo slight displacement due to long-term use or temperature changes, the elastic recovery force of the elastic layer can still maintain the tight fit between the sealing surfaces of the housing 10 and the cover plate 20, maintaining the stability of the sealing performance. In this embodiment, the elastic sealing layer uses materials such as rubber and silicone. The better elasticity of rubber or silicone can achieve a better sealing effect.

[0042] Preferably, the elastic sealing layer can also be configured as a corrugated structure. Compared to a flat structure, the corrugated structure has a compressible three-dimensional space. When the housing 10 or cover plate 20 deforms, the raised portions of the corrugated structure can fill a larger gap through elastic buckling or compression. The curved surface design of the corrugated structure can disperse external compressive force in multiple directions, avoiding sealing failure caused by stress concentration on a single plane. The corrugated structure can be configured as a sawtooth or sine wave shape to achieve a better sealing effect.

[0043] Furthermore, a first clearance groove 23 is provided on one side of the cover plate 20, and a second clearance groove 13 is provided on the housing 10 opposite to the first clearance groove 23. The first clearance groove 23 and the second clearance groove 13 surround each other to form a clearance hole 231. One end of the roller brush 30 is rotatably disposed in the clearance hole 231. A sealing arc surface 232 is provided on the inner wall surface of at least one of the first clearance groove 23 and the second clearance groove 13. The sealing arc surface 232 extends circumferentially along the clearance hole 231.

[0044] In this embodiment, the first clearance groove 23 on the cover plate 20 and the second clearance groove 13 on the housing 10 form a clearance hole 231, which can avoid one end of the roller brush 30 and the structure connected to the roller brush 30, ensuring that the roller brush 30 can better rotate relative to the receiving cavity 11. The sealing arc surface 232 is the dividing section between the two sealing sections. The sealing arc surface 232 extends circumferentially along the clearance hole 231, which can achieve a seal within the clearance hole 231 and prevent internal pressure leakage of the receiving cavity 11 due to the presence of the clearance hole 231.

[0045] Furthermore, the intermediate sweeping assembly also includes a bearing 40, which comprises an inner ring and an outer ring that can rotate relative to each other. Along the circumference of the clearance hole 231, the outer ring is fixed to the inner wall surface of the clearance hole 231. The roller brush 30 is provided with a rotating shaft 31. One end of the rotating shaft 31 is fixedly passed through the inner ring and driven to connect with an external driving component. The rotating shaft 31 rotates relative to the clearance hole 231 under the action of the external driving component. Rolling contact is achieved between the inner and outer rings of the bearing 40 through ball bearings. By fixing the outer ring of the bearing 40 to the inner wall surface of the clearance hole 231 and fixing the rotating shaft 31 of the roller brush 30 through the inner ring of the bearing 40, it is ensured that the rotating shaft 31 can better drive the roller brush 30 to rotate. This avoids the possibility of sliding friction caused by direct contact between the rotating shaft 31 and the clearance hole 231, and also prevents potential leaks that could worsen the sealing effect.

[0046] Furthermore, the intermediate sweeping assembly also includes a seal 50. Along the length of the rotating shaft 31, the seal 50 is disposed on the side of the bearing 40 away from the roller brush 30. Along the circumferential direction of the clearance hole 231, the seal 50 is sealed and connected to the sealing arc surface 232. The seal 50 is provided with a mating hole 51, through which the rotating shaft 31 rotatably passes and is driven to connect with an external drive component.

[0047] In this embodiment, the sealing connection between the seal 50 and the sealing arc surface 232 can form an annular seal in the circumference of the clearance hole 231, preventing the negative pressure in the accommodating cavity 11 from leaking out of the clearance hole 231, which can significantly improve the sealing effect in the clearance hole 231. By providing the clearance hole 231 on the seal 50, the rotating shaft 31 passes through the inner ring of the bearing 40 and the clearance hole 231 in sequence before connecting to the external drive component (such as a motor), ensuring the coaxiality of power transmission.

[0048] Furthermore, such as Figure 1 and Figure 4 As shown, the housing 10 has a first side and a second side disposed opposite to each other. On the first side of the housing 10, a first snap-fit ​​assembly is disposed between the housing 10 and the cover plate 20. On the second side of the housing 10, a second snap-fit ​​assembly is disposed between the housing 10 and the cover plate 20. The housing 10 and the cover plate 20 are fixedly connected by the first snap-fit ​​assembly and the second snap-fit ​​assembly. In this embodiment, the first snap-fit ​​assembly includes a buckle 24 and a slot 14, one of which is disposed on the housing 10, and the other is disposed on the cover plate 20. Figure 1 , Figure 6 , Figure 8 and Figure 9 In this embodiment, the slot 14 is provided on the housing 10, and the buckle 24 is provided on the cover plate 20. Figure 4 , Figure 5 , Figure 8 and Figure 9The second locking assembly shown in this embodiment includes a first limiting buckle 15 and a second limiting buckle 25. One of the first limiting buckles 15 is disposed on the housing 10, and the other is disposed on the cover plate 20. In this embodiment, the first limiting buckle 15 is disposed on the housing 10, and the second limiting buckle 25 is disposed on the cover plate 20. Both the first limiting buckle 15 and the second limiting buckle 25 have limiting ribs 151, and the first limiting buckle 15 and the second limiting buckle 25 are locked together by the two limiting ribs 151. The second limiting buckle 25 is provided with a lever part 251 at the end away from the cover plate 20 for releasing the engagement between the first limiting buckle 15 and the second limiting buckle 25. When it is necessary to disassemble the cover plate 20 from the housing 10, the lever part 251 is manually operated to release the engagement between the first limiting buckle 15 and the second limiting buckle 25, and then the buckle 24 of the first locking member is separated from the slot 14. Under the premise of ensuring the fixed connection between the housing 10 and the cover plate 20, it is easier to disassemble and separate the housing 10 and the cover plate 20.

[0049] On the other hand, this application also discloses a cleaning device that includes the aforementioned intermediate sweeping component. Therefore, this cleaning device incorporates all the technical effects of the aforementioned intermediate sweeping component. Since the technical effects of the intermediate sweeping component have already been described in detail above, they will not be repeated here.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mid-scan component, characterized in that, include: The housing (10) is provided with a receiving cavity (11) having an opening (111); A cover plate (20) is provided on the housing (10), and the cover plate (20) is provided with a through hole (22) corresponding to the opening (111). A sealing structure (21) is provided on the side of the cover plate (20) near the housing (10). The sealing structure (21) extends along the outer periphery of the opening (111) to seal the gap between the housing (10) and the cover plate (20). A roller brush (30) is rotatably connected to the receiving cavity (11), and the roller brush (30) is at least partially located within the through hole (22).

2. The intermediate scanning component according to claim 1, characterized in that, The sealing structure (21) includes a sealing protrusion, and the housing (10) is provided with a mating part (12) that is adapted to the sealing protrusion.

3. The intermediate scanning component according to claim 2, characterized in that, The sealing protrusion has a first sealing plane (211) at its top end, and a second sealing plane (212) is provided on the side wall of the sealing protrusion away from the opening (111).

4. The intermediate scanning component according to claim 3, characterized in that, The first sealing plane (211) intersects with the second sealing plane (212), and the angle between the first sealing plane (211) and the second sealing plane (212) is greater than 90 degrees and less than 180 degrees.

5. The intermediate scanning component according to claim 3, characterized in that, The mating part (12) has a third sealing plane (121) adapted to the first sealing plane (211) on the side near the first sealing plane (211), and a fourth sealing plane (122) adapted to the second sealing plane (212) on the side near the second sealing plane (212).

6. The intermediate scanning assembly according to claim 5, characterized in that, An elastic sealing layer is provided between the first sealing plane (211) and the third sealing plane (121), and between the second sealing plane (212) and the fourth sealing plane (122). The cover plate (20) is sealed to the housing (10) through the elastic sealing layer. The elastic sealing layer is configured as a wave-shaped structure and / or a flat plate structure.

7. The intermediate scanning assembly according to any one of claims 1 to 5, characterized in that, A first clearance groove (23) is provided on one side of the cover plate (20), and a second clearance groove (13) is provided on the housing (10) opposite to the first clearance groove (23). The first clearance groove (23) and the second clearance groove (13) surround each other to form a clearance hole (231). One end of the roller brush (30) is rotatably disposed in the clearance hole (231). A sealing arc surface (232) is provided on the inner wall surface of at least one of the first clearance groove (23) and the second clearance groove (13). The sealing arc surface (232) extends circumferentially along the clearance hole (231).

8. The intermediate scanning assembly according to claim 7, characterized in that, The intermediate sweeping assembly also includes a bearing component (40), which includes an inner ring and an outer ring that can rotate relative to each other. Along the circumference of the clearance hole (231), the outer ring is fixed to the inner wall surface of the clearance hole (231). The roller brush (30) is provided with a rotating shaft (31). One end of the rotating shaft (31) is fixedly passed through the inner ring and driven to be connected to an external driving component. The rotating shaft (31) rotates relative to the clearance hole (231) under the action of the external driving component.

9. The intermediate scanning assembly according to claim 8, characterized in that, The intermediate sweeping assembly also includes a seal (50). Along the length of the rotating shaft (31), the seal (50) is disposed on the side of the bearing (40) away from the roller brush (30). Along the circumferential direction of the clearance hole (231), the seal (50) is sealed to the sealing arc surface (232). The seal (50) is provided with a mating hole (511). The rotating shaft (31) rotatably passes through the mating hole (511) and is driven to connect with an external driving component.

10. A cleaning device, characterized in that, Includes the mid-scan assembly as described in any one of claims 1 to 9.

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