Cleaning device

Abstract

The embodiment of the utility model provides a cleaning device. The cleaning device comprises a mounting frame, a driving mechanism, a first cleaning mechanism, a second cleaning mechanism and a third cleaning mechanism. The driving mechanism comprises a driver and a connecting base. The first cleaning mechanism comprises a first seat body and a first cleaning piece, and the first cleaning piece and the side face are oppositely arranged. The second cleaning mechanism comprises a second seat body and a second cleaning piece, and the second cleaning piece and the top face are oppositely arranged. The third cleaning mechanism comprises a third seat body and a third cleaning piece, and the third cleaning piece is arranged opposite to the bottom face. According to the cleaning device, the driver drives the connecting base to rotate so as to drive the nickel-based high-temperature alloy disc part to rotate, so that the nickel-based high-temperature alloy disc part rotates relative to the first cleaning part, the second cleaning part and the third cleaning part, and the side face, the top face and the bottom face of the nickel-based high-temperature alloy disc part are cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning, in particular to a cleaning device. BACKGROUND

[0002] The nickel-based high-temperature alloy disc generally needs to be subjected to macrostructure detection to check whether the disc has defects such as non-metallic inclusions, coarse grains, macroscopic pores and cracks visible to the naked eye, and the above defects will have a significant impact on the reliability of the disc.

[0003] The high-temperature alloy corrosion generally adopts chemical corrosion, and the corrosion liquid is usually a mixture of hydrochloric acid, sulfuric acid and anhydrous copper sulfate. During the corrosion process of the nickel-based high-temperature alloy disc, copper ions are reduced and deposited on the surface of the disc to form black spots, which cannot be removed by subsequent rinsing, wiping and the like. The black spots will seriously affect the judgment of the surface defects of the disc, and if the black spots cover the defects such as non-metallic inclusions, coarse grains, macroscopic pores and cracks visible to the naked eye, it will have a serious impact on the service life of the disc and even the engine, and even cause a major accident.

[0004] In the related art, the nickel-based high-temperature alloy disc is wiped by manual operation, but the manual operation is dangerous and uneven, so that the nickel-based high-temperature alloy disc still has black spot marks after wiping. Content of the utility model

[0005] The present application provides a cleaning device to solve or alleviate one or more technical problems in the prior art.

[0006] In a first aspect, the present application provides a cleaning device for cleaning a nickel-based high-temperature alloy disc, the nickel-based high-temperature alloy disc comprising a bottom surface, a top surface and a side surface, the cleaning device comprising:

[0007] A driving mechanism comprising a driver and a connecting seat for connecting the nickel-based high-temperature alloy disc, the driver being configured to drive the connecting seat to rotate;

[0008] A first cleaning mechanism comprising a first seat body and a first cleaning member, the first seat body and the first cleaning member being connected, and the first cleaning member being arranged opposite to the side surface;

[0009] A second cleaning mechanism comprising a second seat body and a second cleaning member, the second seat body and the second cleaning member being connected, and the second cleaning member being arranged opposite to the top surface;

[0010] A third cleaning mechanism comprising a third seat body and a third cleaning member, the third seat body and the third cleaning member being connected, and the third cleaning member being arranged opposite to the bottom surface.

[0011] In some embodiments, the connecting seat comprises a first connecting rod and a second connecting rod for connecting the cleaning nickel-based superalloy disc, the first connecting rod is connected with the output shaft of the driver, and the first connecting rod and the second connecting rod are detachably connected.

[0012] In some embodiments, the first connecting rod is provided with a hook adjacent to one end of the second connecting rod, the second connecting rod is provided with a ring adjacent to one end of the first connecting rod, and the hook is arranged in the ring; or, the second connecting rod is provided with a hook adjacent to one end of the first connecting rod, and the first connecting rod is provided with a ring adjacent to the other end of the first connecting rod, and the hook is arranged in the ring.

[0013] In some embodiments, the second connecting rod is provided with a support seat at one end away from the first connecting rod, the nickel-based superalloy disc is defined with a insertion hole penetrating in the axial direction, and the second connecting rod is arranged in the insertion hole and abuts against the support seat at the bottom surface.

[0014] In some embodiments, the diameter of the support seat in the first direction is greater than the diameter of the insertion hole in the first direction, wherein the first direction intersects with the extension direction of the second connecting rod.

[0015] In some embodiments, the second cleaning member and the nickel-based superalloy disc at least partially overlap in the extension direction of the second connecting rod.

[0016] In some embodiments, the overlapping part of the second cleaning member and the nickel-based superalloy disc in the extension direction of the second connecting rod has a size L1 in the first direction, and the nickel-based superalloy disc has a size D, and D / 2≥L1 is satisfied.

[0017] In some embodiments, the third cleaning member and the nickel-based superalloy disc at least partially overlap in the extension direction of the second connecting rod.

[0018] In some embodiments, the overlapping part of the third cleaning member and the nickel-based superalloy disc in the extension direction of the second connecting rod has a size L2 in the first direction, and the nickel-based superalloy disc has a size D, and D / 2≥L2 is satisfied.

[0019] In some embodiments, the third cleaning member and the second cleaning member are arranged in a staggered manner in the extension direction of the second connecting rod.

[0020] The embodiments of the present application have the following beneficial effects:

[0021] Based on the above provided cleaning device, when the nickel-based superalloy disc needs to be cleaned, the nickel-based superalloy disc is connected to the connecting seat, at this time, the first cleaning piece is opposite to and abuts against the side surface of the nickel-based superalloy disc, the second cleaning piece is opposite to and abuts against the top surface of the nickel-based superalloy disc, and the third cleaning piece is opposite to and abuts against the bottom surface of the nickel-based superalloy disc, then the connecting seat is driven to rotate by the driver, so as to drive the nickel-based superalloy disc to rotate, so that the side surface of the nickel-based superalloy disc rotates relative to the first cleaning piece, the top surface of the nickel-based superalloy disc rotates relative to the second cleaning piece, and the bottom surface of the nickel-based superalloy disc rotates relative to the third cleaning piece, so as to clean the side surface, the top surface and the bottom surface of the nickel-based superalloy disc. After the nickel-based superalloy disc is cleaned, the rotation of the nickel-based superalloy disc is stopped by the driver, and finally the nickel-based superalloy disc is detached from the connecting seat, so that the cleaning of the nickel-based superalloy disc is completed. Based on this, the semi-automatic cleaning of the nickel-based superalloy disc can be realized, the cleaning efficiency of the nickel-based superalloy disc is greatly improved, and the safety risk caused by manual cleaning of the nickel-based superalloy disc is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings incorporated in the specification and forming a part thereof illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative labor.

[0024] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding thereto, and these exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings in the drawings do not constitute a proportional limitation.

[0025] Figure 1 A side view of the cleaning device according to the embodiment of the present application is shown;

[0026] Figure 2 A top view of the cleaning device according to the embodiment of the present application is shown.

[0027] Explanation of reference numerals:

[0028] 1. Cleaning device;

[0029] 10. Driving mechanism; 110. Driver; 120. Connecting seat; 120a. First connecting rod; 120b. Second connecting rod;

[0030] 20、first cleaning mechanism; 210、first seat; 220、first cleaning member;

[0031] 30、second cleaning mechanism; 310、second seat; 320、second cleaning member;

[0032] 40、third cleaning mechanism; 410、third seat; 420、third cleaning member;

[0033] 50、hook;

[0034] 60、circular ring;

[0035] 70、support seat;

[0036] 80、mounting frame;

[0037] 2、nickel-based superalloy disc; 21、bottom surface; 22、top surface; 23、side surface;

[0038] X、first direction. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] The following application provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and it does not indicate the relationship between the various embodiments and / or settings discussed.

[0041] For ease of description, spatially relative terms can be used herein for the purpose of illustrating one element's or feature's relationship to another element or feature as shown in the figures. Such spatially relative terms include "internal", "external", "inward", "outward", "stern", "forward", "above", "below", "lower", "upper", "front", "rear", and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over or rotated, or the device is mirrored, the directional descriptions can be reversed. Accordingly, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] Referring to Figure 1 and Figure 2 , the embodiment of the present application provides a cleaning device 1 for cleaning a nickel-based superalloy disc 2, the nickel-based superalloy disc 2 comprising a bottom surface 21, a top surface 22 and a side surface 23. Specifically, the nickel-based superalloy disc 2 is in a disc shape, and the cleaning device 1 of the present application is used for semi-automatically cleaning the top surface 22, the bottom surface 21 and the side surface 23 of the nickel-based superalloy disc 2, so as to improve the cleaning efficiency.

[0043] The cleaning device 1 comprises a mounting frame 80, a driving mechanism 10, a first cleaning mechanism 20, a second cleaning mechanism 30 and a third cleaning mechanism 40. The driving mechanism 10 comprises a driver 110 and a connecting seat 120 for connecting the nickel-based superalloy disc 2, the connecting seat 120 is detachably connected with the nickel-based superalloy disc 2, and the driver 110 is used for driving the connecting seat 120 to rotate. In this way, the nickel-based superalloy disc 2 can be connected with the connecting seat 120 when it is needed to be cleaned, and the nickel-based superalloy disc 2 can be detached from the connecting seat 120 after the cleaning of the nickel-based superalloy disc 2 is completed.

[0044] The first cleaning mechanism 20 comprises a first seat body 210 and a first cleaning piece 220, the first seat body 210 and the first cleaning piece 220 are connected, and the first cleaning piece 220 is arranged opposite to the side surface 23. The second cleaning mechanism 30 comprises a second seat body 310 and a second cleaning piece 320, the second seat body 310 and the second cleaning piece 320 are connected, and the second cleaning piece 320 is arranged opposite to the top surface 22. The third cleaning mechanism 40 comprises a third seat body 410 and a third cleaning piece 420, the third seat body 410 and the third cleaning piece 420 are connected, and the third cleaning piece 420 is arranged opposite to the bottom surface 21.

[0045] The driver 110, the first seat body 210, the second seat body 310, and the third seat body 410 are respectively connected to the mounting frame 80, so that the driver 10, the first cleaning mechanism 20, the second cleaning mechanism 30, and the third cleaning mechanism 40 are connected to the mounting frame 80.

[0046] According to the cleaning device 1 provided in the embodiment of the present application, when the nickel-based superalloy disc 2 needs to be cleaned, the nickel-based superalloy disc 2 is connected to the connecting seat 120, at this time, the first cleaning element 220 is opposite and abuts against the side surface 23 of the nickel-based superalloy disc 2, the second cleaning element 320 is opposite and abuts against the top surface 22 of the nickel-based superalloy disc 2, and the third cleaning element 420 is opposite and abuts against the bottom surface 21 of the nickel-based superalloy disc 2, then the driver 110 drives the connecting seat 120 to rotate, so as to drive the nickel-based superalloy disc 2 to rotate, so that the side surface 23 of the nickel-based superalloy disc 2 rotates relative to the first cleaning element 220, the top surface 22 of the nickel-based superalloy disc 2 rotates relative to the second cleaning element 320, and the bottom surface 21 of the nickel-based superalloy disc 2 rotates relative to the third cleaning element 420, so as to clean the side surface 23, the top surface 22, and the bottom surface 21 of the nickel-based superalloy disc 2. After the nickel-based superalloy disc 2 is cleaned, the driver 110 stops the rotation of the nickel-based superalloy disc 2, and finally the nickel-based superalloy disc 2 is detached from the connecting seat 120, so that the cleaning of the nickel-based superalloy disc 2 is completed. Based on this, the semi-automatic cleaning of the nickel-based superalloy disc 2 can be realized, the cleaning efficiency of the nickel-based superalloy disc 2 is greatly improved, and the safety risk (the corrosion liquid is extremely strong in acidity, the personnel need to wear an acid-proof mask and protective clothing, the operation is extremely inconvenient, and the acid liquid is easy to splash when manually cleaned, so that a safety accident is easily caused without full-body protection) caused by manual cleaning of the nickel-based superalloy disc 2 is reduced.

[0047] In some embodiments, the first cleaning element 220, the second cleaning element 320, and the third cleaning element 420 are brushes, and the black spots generated on the nickel-based superalloy disc 2 during the low-magnification corrosion of the nickel-based superalloy are eliminated through the friction between the brushes and the top surface 22, the side surface 23, and the bottom surface 21 of the nickel-based superalloy disc 2 respectively.

[0048] In the embodiment of the present application, after the nickel-based superalloy disc 2 is connected to the connecting seat 120, it is necessary to ensure that the nickel-based superalloy disc 2 is in contact with the first cleaning element 220, the second cleaning element 320, and the third cleaning element 420 respectively, so as to realize the friction between the brushes and the nickel-based superalloy disc 2.

[0049] In some embodiments, the first seat body 210 is fixedly connected with the mounting frame 80, and a plurality of first mounting holes are arranged on the first seat body 210, and the first cleaning member 220 is connected in the first mounting holes through first bolts. In this way, the first cleaning member 220 can be adjusted relative to the nickel-based superalloy disc 2 by connecting the first bolts to different first mounting holes, so as to adjust the contact area between the first cleaning member 220 and the nickel-based superalloy disc 2.

[0050] In some embodiments, the second seat body 310 is fixedly connected with the mounting frame 80, and a plurality of second mounting holes are arranged on the second seat body 310, and the second cleaning member 320 is connected in the second mounting holes through second bolts. In this way, the second cleaning member 320 can be adjusted relative to the nickel-based superalloy disc 2 by connecting the second bolts to different second mounting holes, so as to adjust the contact area between the second cleaning member 320 and the nickel-based superalloy disc 2.

[0051] In some embodiments, the third seat body 410 is fixedly connected with the mounting frame 80, and a plurality of third mounting holes are arranged on the third seat body 410, and the third cleaning member 420 is connected in the third mounting holes through third bolts. In this way, the third cleaning member 420 can be adjusted relative to the nickel-based superalloy disc 2 by connecting the third bolts to different third mounting holes, so as to adjust the contact area between the third cleaning member 420 and the nickel-based superalloy disc 2.

[0052] In some embodiments, the connecting seat 120 includes a first connecting rod 120a and a second connecting rod 120b for connecting the nickel-based superalloy disc 2 to be cleaned. The first connecting rod 120a is connected with the output shaft of the driver 110, and the first connecting rod 120a and the second connecting rod 120b are detachably connected. When the nickel-based superalloy disc 2 needs to be cleaned, the second connecting rod 120b is detached from the first connecting rod 120a, the nickel-based superalloy disc 2 is connected to the second connecting rod 120b, and then the first connecting rod 120a is connected with the second connecting rod 120b. Finally, the first connecting rod 120a is driven to rotate by the driver 110, so as to drive the nickel-based superalloy disc 2 to rotate.

[0053] Exemplarily, the driver 110 is an electric motor. It can be understood that the driver 110 can also be other implementation manners, which are not limited herein.

[0054] In some embodiments, the first connecting rod 120a is provided with a hook 50 adjacent to one end of the second connecting rod 120b, the second connecting rod 120b is provided with a ring 60 adjacent to one end of the first connecting rod 120a, the hook 50 is arranged in the ring 60, and the first connecting rod 120a and the second connecting rod 120b are connected through the connection of the ring 60 and the hook 50. Alternatively, the second connecting rod 120b is provided with a hook 50 adjacent to one end of the first connecting rod 120a, the first connecting rod 120a is provided with a ring 60 adjacent to the other end of the first connecting rod 120a, the hook 50 is arranged in the ring 60, and the first connecting rod 120a and the second connecting rod 120b are connected through the connection of the ring 60 and the hook 50.

[0055] In some embodiments, the second connecting rod 120b is provided with a support seat 70 away from one end of the first connecting rod 120a, the nickel-based superalloy disc 2 is defined with a through hole in the axial direction, the second connecting rod 120b is arranged in the through hole and the bottom surface 21 abuts against the support seat 70. In this way, when the second connecting rod 120b and the nickel-based superalloy disc 2 need to be connected, the second connecting rod 120b is arranged in the through hole, and the support seat 70 abuts against the bottom surface 21 of the nickel-based superalloy disc 2, so as to fix the nickel-based superalloy disc 2.

[0056] Further, the second connecting rod 120b is threadedly connected with the support seat 70 away from one end of the first connecting rod 120a. When the second connecting rod 120b and the nickel-based superalloy disc 2 need to be connected, the support seat 70 is detached from the second connecting rod 120b, then one end of the second connecting rod 120b away from the first connecting rod 120a is arranged in the through hole from the top of the through hole, and then one end of the second connecting rod 120b away from the first connecting rod 120a is threadedly connected with the support seat 70, so that the support seat 70 abuts against the bottom surface 21 of the nickel-based superalloy disc 2.

[0057] In some embodiments, the diameter of the support seat 70 in the first direction X is greater than the diameter of the through hole in the first direction X, and the first direction X intersects with the extension direction of the second connecting rod 120b, so as to avoid the nickel-based superalloy disc 2 from being separated from the second connecting rod 120b. Specifically, the first direction X is perpendicular to the extension direction of the second connecting rod 120b.

[0058] In some embodiments, the second cleaning member 320 and the nickel-based superalloy disc 2 at least partially overlap in the extension direction of the second connecting rod 120b, so that the second cleaning member 320 can clean the nickel-based superalloy disc 2 through relative displacement.

[0059] In some embodiments, in the extending direction of the second connecting rod 120b, the overlapping part of the second cleaning member 320 and the nickel-based superalloy disk 2 in the first direction X has a size of L1, and the nickel-based superalloy disk 2 has a size of D, satisfying: D / 2≥L1. In this way, by the partial contact between the second cleaning member 320 and the nickel-based superalloy disk 2, the cleaning of the top surface 22 of the nickel-based superalloy disk 2 can be achieved.

[0060] In some embodiments, in the extending direction of the second connecting rod 120b, the third cleaning member 420 and the nickel-based superalloy disk 2 at least partially overlap, so that the third cleaning member 420 can achieve the cleaning of the nickel-based superalloy disk 2 by the relative displacement with the nickel-based superalloy disk 2.

[0061] In some embodiments, in the extending direction of the second connecting rod 120b, the overlapping part of the third cleaning member 420 and the nickel-based superalloy disk 2 in the first direction X has a size of L2, and the nickel-based superalloy disk 2 has a size of D, satisfying: D / 2≥L2. In this way, by the partial contact between the third cleaning member 420 and the nickel-based superalloy disk 2, the cleaning of the bottom surface 21 of the nickel-based superalloy disk 2 can be achieved.

[0062] In some embodiments, in the extending direction of the second connecting rod 120b, the third cleaning member 420 and the second cleaning member 320 are arranged in a staggered manner. In this way, the third cleaning member 420 and the second cleaning member 320 can not interfere with each other when cleaning the nickel-based superalloy disk 2, and the bristles on the third cleaning member 420 and the bristles on the second cleaning member 320 can not be intertwined.

[0063] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0064] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example implementations.

[0065] The foregoing is merely illustrative of the principles of the application and various modifications can be made by those skilled in the art without departing from the spirit and scope of the application. The above-described embodiments are intended to be illustrative, not restrictive, of the scope of the present application, which is set out in the following claims.

Claims

1. A cleaning apparatus for cleaning nickel-based superalloy discs, the nickel-based superalloy discs comprising a bottom surface, a top surface, and a side surface, characterized in that, include: The driving mechanism includes a driver and a connecting seat for connecting the cleaning nickel-based high-temperature alloy disc, wherein the driver is used to drive the connecting seat to rotate. The first cleaning mechanism includes a first base and a first cleaning component, the first base and the first cleaning component are connected, and the first cleaning component is disposed opposite to the side; The second cleaning mechanism includes a second base and a second cleaning component, the second base and the second cleaning component are connected, and the second cleaning component is disposed opposite to the top surface; The third cleaning mechanism includes a third seat and a third cleaning component, the third seat and the third cleaning component are connected, and the third cleaning component is disposed opposite to the bottom surface.

2. The cleaning device according to claim 1, characterized in that, The connector includes a first connecting rod and a second connecting rod for connecting the cleaning nickel-based high-temperature alloy disc. The first connecting rod is connected to the output shaft of the driver, and the first connecting rod and the second connecting rod are detachably connected.

3. The cleaning device according to claim 2, characterized in that, A hook is provided at one end of the first connecting rod adjacent to the second connecting rod, and a ring is provided at one end of the second connecting rod adjacent to the first connecting rod, with the hook passing through the ring; or, a hook is provided at one end of the second connecting rod adjacent to the first connecting rod, and rings are provided at both ends of the first connecting rod adjacent to the first connecting rod, with the hook passing through the rings.

4. The cleaning device according to claim 2, characterized in that, The second connecting rod has a support base at one end away from the first connecting rod. The nickel-based high-temperature alloy disc has an axial through-hole. The second connecting rod passes through the through-hole and its bottom surface abuts against the support base.

5. The cleaning device according to claim 4, characterized in that, The diameter of the support base in the first direction is greater than the diameter of the insertion hole in the first direction, wherein the first direction intersects the extension direction of the second connecting rod.

6. The cleaning apparatus according to claim 4, characterized in that, In the extending direction of the second connecting rod, the second cleaning component and the nickel-based superalloy disc component at least partially overlap.

7. The cleaning device according to claim 2, characterized in that, In the extension direction of the second connecting rod, the overlapping portion of the second cleaning component and the nickel-based high-temperature alloy disc has a dimension of L1 in the first direction, and the nickel-based high-temperature alloy disc has a dimension of D, satisfying: D / 2≥L1, wherein the first direction intersects with the extension direction of the second connecting rod.

8. The cleaning apparatus according to claim 7, characterized in that, In the extending direction of the second connecting rod, the third cleaning component and the nickel-based high-temperature alloy disc component at least partially overlap.

9. The cleaning device according to claim 2, characterized in that, In the extension direction of the second connecting rod, the overlapping portion of the third cleaning component and the nickel-based high-temperature alloy disc has a dimension of L2 in the first direction, and the nickel-based high-temperature alloy disc has a dimension of D, satisfying: D / 2≥L2, wherein the first direction intersects with the extension direction of the second connecting rod.

10. The cleaning apparatus according to claim 2, characterized in that, The third cleaning component and the second cleaning component are misaligned in the extending direction of the second connecting rod.

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