CN217013863U - Dirt box for a cleaning device and cleaning device - Google Patents

Abstract

The application discloses cleaning device includes: the main part, install in the main part and be suitable for the suction nozzle that moves on waiting to clean the surface, the main part still bears negative pressure source and filth case, the entry and the suction nozzle fluid intercommunication of filth case, export and negative pressure source fluid intercommunication, install the sealing member at the exit, the sealing member includes the first seal lip of elasticity and the second seal lip of the fluid passage of sealed export and negative pressure source, along the installation direction of filth case, the second seal lip is in the place ahead of first seal lip, first seal lip extends to the installation direction dorsad, the second seal lip extends towards the installation direction, the sealing member still includes the fixed body, the fixed body links to each other with the free end of second seal lip in order to keep the second seal lip at the state of leveling. When assembling the filth box to the main part, first seal lip and second seal lip can not turn over and roll over, have made things convenient for the installation of filth box and have helped improving sealed effect.

Description

Dirt box for a cleaning device and cleaning device

Technical Field

The application relates to the technical field of cleaning devices, in particular to a dirt box for a cleaning device. The application also relates to a cleaning device comprising such a dirt box.

Background

Along with the improvement of living standard of people, cleaning devices such as household dust collectors and floor cleaning machines are more and more widely applied. Taking a floor scrubber as an example, it generally comprises a floor brush, a main body and a dirt box assembled with the main body. The dirt box is communicated with the ground brush through a dust channel, and the dirt box is further communicated with the main body through a negative pressure channel. When the floor washing machine is used, the main body generates a negative pressure to suck dust on the floor into the dirt box through the floor brush.

The waste box is detachably assembled with the main body. A seal 700 is typically provided between the dirt box and the main body to prevent leakage from the negative pressure passage. However, when the dirt box 701 is assembled, the seal lip 702 of the seal 700 is easily scratched and lifted (as shown in fig. 10, the broken line in fig. 10 shows a normal state of the seal lip 702), resulting in a poor installation or even a poor sealing.

SUMMERY OF THE UTILITY MODEL

The application provides a cleaning device, includes: a main body mounted on the main body and adapted to a suction nozzle for movement over a surface to be cleaned, the main body further carrying a source of negative pressure and a dirt bin, an inlet of the dirt bin being in fluid communication with the suction nozzle and an outlet being in fluid communication with the source of negative pressure, a seal being mounted at the outlet, the seal comprising a first resilient seal lip and a second resilient seal lip sealing the outlet and a fluid passage of the source of negative pressure, the second seal lip being located forwardly of the first seal lip in a mounting direction of the dirt bin, the first seal lip extending away from the mounting direction and the second seal lip extending towards the mounting direction; the seal further includes a retaining body connected to the free end of the second lip to maintain the second lip in a flat condition.

In one embodiment, the seal includes a base body extending toward the mounting direction, a first seal lip and a second seal lip are formed on the base body, the second seal lip includes a support portion extending vertically and a seal portion extending radially outward from a tip end of the support portion, and a fixing body connects the seal portion with the base body.

In one embodiment, the fixing body includes a first rib spaced apart from the supporting portion.

In one embodiment, the first ribs are sheet-like.

In one embodiment, the ratio of the width of the first bead to the circumferential extension of the sealing portion is between 1:1 and 1: 6.

In one embodiment, the thickness of the first bead is the same as the thickness of the seal portion.

In one embodiment, the first bead is at a position where a radial dimension of the seal portion is largest.

In one embodiment, the first bead is in the middle of the circumferentially extending length of the sealing portion.

In one embodiment, the connection point of the fastening body to the base body is radially outside the orthographic projection of the sealing portion on the base body, so that the surface of the fastening body facing the installation direction of the dirt container is an inclined surface.

In one embodiment, the fixing body further includes a second rib connected to the support portion.

In one embodiment, the width of the second ribs is between 1mm and 2mm, and the distance between adjacent second ribs is between 7mm and 10 mm.

In one embodiment, the second bead is at least at an end of the seal.

In one embodiment, the second bead is within the confines of the seal.

In one embodiment, the fixing body is integrally formed with the second sealing lip.

In one embodiment, the seal is quadrilateral, the first and second lips forming two opposing sides of the quadrilateral, and there are further sealing lips forming two other sides of the quadrilateral between the first and second lips.

In one embodiment, a rigid support base is provided on the dirt box, and a seal is provided on the support base, the support base having a passage communicating with the interior of the dirt box, the passage forming the outlet.

In one embodiment, the seal is fixedly engaged with the support base.

In one embodiment, the dirt tank includes a housing and a bracket mounted on an opening in the housing, the bracket having an opening therein in communication with an interior of the dirt tank, the support base being mounted on the bracket and the channel being in communication with the opening.

In one embodiment, an upper cover is also mounted on the bracket, the upper cover is configured with a matching hole, and the sealing element and the supporting seat are positioned in the matching hole.

The beneficial effect of this application: according to the cleaning device, when the dirt box is assembled on the main body, the first sealing lip and the second sealing lip can not be scraped by the structure on the main body and turn over towards the outlet, and the dirt box is convenient to install. In addition, when the dirt box is pumped, the first sealing lip and the second sealing lip can seal the fluid channel between the dirt box and the negative pressure source so as to generate required negative pressure in the dirt box and ensure that dirt can be smoothly sucked into the dirt box.

Drawings

Figure 1 schematically shows a cleaning device according to one embodiment of the present application.

FIG. 2 schematically illustrates a dirt tank according to one embodiment of the present application.

Figure 3 shows schematically the overall structure of a first embodiment of the seal.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 schematically shows the overall structure of the second embodiment of the seal.

Fig. 6 is a cross-sectional view of fig. 5.

Fig. 7(a) schematically shows the structure of the support base.

Fig. 7(b) is a view in the direction C of fig. 7 (a).

Fig. 8 schematically shows a state where the upper cover, the sealing member and the supporting base of the filth case shown in fig. 2 are removed.

Fig. 9 schematically shows the structure of the upper cover.

Fig. 10 schematically shows a process of assembling a sealing ring in the prior art.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures associated with the present application are shown in the drawings, not all of them.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In the embodiment of the present application, as shown in fig. 1, the direction of the arrow I is "up" and the direction opposite to the arrow I is "down". As shown in fig. 2, the direction of arrow a is the installation direction of the filth case, and the direction along arrow a is "front" and the direction opposite to arrow a is "rear".

Fig. 1 schematically shows a block diagram of a cleaning device 1 according to an embodiment of the present application. The cleaning device 1 may be a vacuum cleaner, a floor scrubber or the like.

As shown in fig. 1, the cleaning apparatus 1 includes: a main body 2, on which main body 2 a suction nozzle 4 is arranged, adapted to be moved over a surface to be cleaned. In addition, a negative pressure source 22 and a waste tank 3 are carried on the main body 2. The inlet (not shown) of the dirt box 3 is in fluid communication with the suction nozzle 4 and the outlet 301 is in fluid communication with the negative pressure source 22. For example, the outlet 301 and the negative pressure source 22 form a fluid passage 370 therebetween. The negative pressure source 22 draws air from the dirt tank 3 through the fluid passage 370 to generate a negative pressure therein, and the suction nozzle 4 sucks dirt on the surface to be cleaned into the dirt tank 3.

The main body 2 is constructed in an elongated rod shape as a whole, so that the cleaning apparatus 1 is more lightweight. The negative pressure source 22 may be a motor for suction. The negative pressure source 22 and the suction nozzle 4 are well known to those skilled in the art and are not related to the technical problem to be solved and will not be described in detail here.

It will be appreciated that when the cleaning apparatus 1 is a vacuum cleaner, the dirt box 3 can be used to store dust, debris, etc. When the cleaning device 1 is a floor cleaning machine capable of spraying water and absorbing water, the dirt tank 3 can be used for storing sewage, solid garbage carried by the sewage, and the like. In addition, other structural components, such as a solid-liquid separator, may be provided in the dirt tank 3. Under the condition that the solid-liquid separation device is arranged, when the sewage tank 3 is used in a floor washing machine, the solid-liquid separation device can separate sewage and solid garbage sucked into the sewage tank 3 so as to facilitate a user to treat the garbage in the sewage tank 3. Of course, the solid-liquid separator need not be provided in the dirt tank 3. Other structures in the case 300 are also irrelevant to the technical problem to be solved and will not be described in detail herein.

In order to facilitate the mounting of the waste bin 3, a carrying structure 20 for carrying the waste bin 3 may also be provided on the main body 2. The bearing structure 20 may be, for example, a receiving cavity or a snap, etc., which will not be described herein. The bearing structure 20 is provided with an air inlet 21 communicating with the negative pressure source 22, and the outlet 301 of the filth tank 3 is butted against the air inlet 21 to form a fluid passage 370. In a particular embodiment (as shown in fig. 2), the dirt container 3 is mounted in the direction of arrow a and removed in the opposite direction to arrow a.

Fig. 2 schematically shows the structure of the dirt tank 3 as a whole, and fig. 3 and 4 schematically show the structure of one embodiment of the seal 310. The dirt box 3 and seal 310 are described below in connection with figures 2, 3 and 4.

As shown in fig. 2, the filth tank 3 includes a tank 300, and an outlet 301 is configured on the tank 300. A seal 310 is mounted at the outlet 301. The sealing member 310 includes an elastic first sealing lip 313 and an elastic second sealing lip 314 which seal the filth tank 3 and the fluid passage 370 of the negative pressure source 22, so that the fluid passage 370 is sealed from air leakage when the cleaning apparatus 1 is used to ensure that filth can be smoothly sucked into the filth tank 3.

The second sealing lip 314 is in front of the first sealing lip 313 in the mounting direction a of the dirt box 3, and the first sealing lip 313 extends away from the mounting direction a, the second sealing lip 314 extending toward the mounting direction a. The seal 310 further comprises a fixing body 317, the fixing body 317 being connected to the free end of the second sealing lip 310 to maintain the second sealing lip 310 in a flat state.

When the dirt box 3 is assembled, the dirt box 3 moves in the mounting direction a relative to the main body 2. Since the extending direction of the first seal lip 313 is opposite to the mounting direction a of the filth box 3, even if the first seal lip 313 scrapes against the main body 2, it does not cause reverse tilting thereof but remains extended smoothly. The free end of the second seal lip 314 is fixed by the fixing body 317 so that the second seal lip 314 is not folded or cocked or wrinkled but remains extended smoothly even if scraped by a structure on the main body 2 when the filth box 3 is assembled. This helps smooth installation of the filth tank 3, which is convenient for the user to use. Even if the dirt box 3 is attached and detached a plurality of times, the first seal lip 313 and the second seal lip 314 are not damaged, and good sealing can be achieved. In addition, since the first and second seal lips 313 and 314 are both elastic, the first and second seal lips 313 and 314 are compressed between the respective mating faces (for example, between the outlet 301 and the air inlet 21 of the bearing structure 20) after the dirt box 3 is mounted to the main body 2, thereby achieving sealing. When the dirt box 3 is sucked, the first seal lip 313 and the second seal lip 314 are deformed to seal the dirt box 3 and the fluid passage 370 of the negative pressure source 22, so that dirt can be smoothly sucked into the dirt box 3.

Fig. 3 schematically shows a first embodiment of a seal 310. As shown in fig. 3 and 4, the seal 310 includes a base 311 extending toward the mounting direction a, and a first seal lip 313 and a second seal lip 314 are formed on the base 311. The second seal lip 314 includes a support portion 315 extending vertically and a seal portion 316 extending radially outward from the tip end of the support portion 315. The sealing portion 316 is liable to be folded or turned up when the filth box 3 is assembled. Therefore, when the fixing member 317 connects the seal portion 316 to the base 311, the seal portion 316 (or the second seal lip 314) can be effectively prevented from being folded or tilted.

The extending direction of the base 311 is parallel to the extending direction of the sealing portion 316. It should be understood that "parallel" as referred to herein is not to be understood in a mathematical sense, but that the two directions of extension may have a smaller angle, and even that the base body 311 and/or the sealing portion 316 may not be planar, as long as there is a gap between the base body 311 and the sealing portion 316. Thus, the sealing portion 316 is easily crushed and deformed when the filth tank 3 is installed, which not only facilitates the installation of the filth tank 3 but also contributes to the improvement of the sealing performance of the sealing portion 316.

As also shown in fig. 3 and 4, the fixing body 317 includes a first rib 321, the first rib 321 being spaced apart from the support portion 315. Thus, the sealing portion 316 has good flexibility, so that the sealing portion 316 can be easily pressed to deform when the waste bin 3 is disassembled, thereby reducing friction force and facilitating the operation of a user. Moreover, the good flexibility of the sealing portion 316 also enables it to produce a good sealing effect, which helps to prevent air leakage.

In a specific embodiment, the thickness of the first rib 321 is the same as the thickness of the sealing portion 316. In this way, both the sealing portion 316 and the first rib 321 have good flexibility, and the sealing portion 316 is also more easily deformed when being pressed, which further facilitates the operation of the user and also contributes to achieving a good sealing effect.

As also shown in fig. 3 and 4, the first ribs 321 are sheet-like. This helps to improve the strength of the first rib 321, preventing the first rib 321 from being snapped when the amount of deformation of the seal portion 316 (or the second seal lip 314) is large. In addition, the first rib 321 having a large width in a sheet shape increases a portion where the sealing portion 316 is connected to the base 311, thereby further preventing the sealing portion 316 (or the second sealing lip 314) from being folded or tilted. In one embodiment, the ratio of the width of the first rib 321 to the circumferential extension of the seal portion 316 is between 1:1 and 1: 6. For example, the ratio of the width of the first rib 321 to the circumferential extension of the sealing portion 316 may be 1:2, 1:3, 1:5, etc., and will not be described herein. In a specific embodiment, the first rib 321 has a width of 10mm, and the sealing portion 316 has a circumferential extension of 30 mm. Of course, the first rib 321 and the sealing portion 316 may be configured in other sizes as long as they are adapted to other related structures, and will not be described in detail herein.

Further, as shown in fig. 3, the first rib 321 is at a position where the radial dimension of the seal portion 316 is largest. When the waste box 3 is attached, the position where the radial dimension of the seal portion 316 is largest is the foremost in the attaching direction a, and therefore, the seal portion first comes into contact with the main body 2, and therefore, the turn-over is most likely to occur. The fixing body 317 is provided at this point to effectively prevent the turnover of the sealing part 316. In a particular embodiment, as shown in fig. 3, the location of the greatest radial dimension of the seal portion 316 is in the middle thereof, and thus the first rib 321 is in the middle of the circumferentially extending length of the seal portion 316. It should be understood that in other cases, the fixing body 317 may be disposed at other positions of the sealing portion 316 as long as the sealing portion 316 is prevented from being folded or wrinkled.

As also shown in fig. 4, the connection position 318 of the first rib 321 with the base 311 is located radially outside the orthographic projection of the seal portion 316 on the base 311, so that the face of the first rib 321 facing the mounting direction of the dirt box 3 is an inclined face. When installing filth case 3, this inclined plane plays the guide effect, helps reducing the installation resistance of filth case 3, has made things convenient for the user to install filth case 3.

Fig. 5 schematically shows the overall structure of the second embodiment of the seal. Fig. 6 is a cross-sectional view of fig. 5. As shown in fig. 5 and 6, the fixing body 317 further includes a second rib 322, and the second rib 322 is connected to the support portion 315. The second rib 322 is integrally formed with the support portion 315 and the sealing portion 316 as a whole, which can be conveniently manufactured by injection molding.

The second rib 322 is at least at an end of the sealing portion 316. Especially for a square seal, the end of the sealing portion 316 is larger in size, and thus providing the second rib 322 at the end of the sealing portion 316 can more effectively prevent the sealing portion 316 from being folded. In other embodiments, the second rib 322 may be provided in the middle of the circumferential extension of the sealing portion 316, for example, a plurality of second ribs 322 may be provided at intervals, as long as the second ribs 322 do not adversely affect the flexibility of the sealing portion 316.

The width of the second ribs 322 is between 1mm and 2mm, and the distance between adjacent second ribs 322 is between 7mm and 10 mm. In this way, the cross-sectional size of the second ribs 322 is small, and the size between adjacent second ribs 322 is large, which does not adversely affect the flexibility of the seal portion 316, and the seal portion 316 can still achieve a good seal.

The fixing body 317 is integrally formed with the second seal lip 314. This improves the strength of the fixing body 317 and facilitates injection molding.

The second rib 322 is within the confines of the seal 316. Thus, the second rib 322 does not protrude out of the surface of the filth case 3 as viewed from the outside of the filth case 3, so that the filth case 3 can be easily mounted in place.

It will also be appreciated that the features of the two embodiments of the seal described above, may also be combined with each other to form a new embodiment, for example, the second ribs 322 shown in fig. 5 may be provided at the end of the seal portion 316 shown in fig. 3. Other combinations of features will not be described in detail herein, so long as the new seal formed by the combination prevents the seal portion 316 (or second seal lip 314) from folding over.

As also shown in fig. 3 or 5, the seal 310 is quadrilateral. The first seal lip 313 and the second seal lip 314 form two opposite sides of a quadrangle, and a seal lip forming the other two sides of the quadrangle is further provided between the first seal lip 313 and the second seal lip 314. When the filth bucket 3 is assembled, the first and second seal lips 313 and 314 are not folded as described above. In addition, the two seal lips are connected to the first seal lip 313 and the second seal lip 314, and therefore, are not folded over.

In other embodiments, the seal 310 may have other shapes as long as it is adapted to the shape of the outlet 301, such as a circular or oval shape. In the case where the seal 310 is circular, the seal 310 may have only the first and second seal lips 313 and 314. The first and second lips 313 and 314 are arcuate and end together in a circle around the outlet 301. The oval seal 310 is similar to a circular seal and will not be described further herein.

As also shown in fig. 3, two diametrically opposed catches 340 are configured on the seal 310 offset from the first 313 and second 314 sealing lips. Thus, a user can hold the two clasps 340 to disassemble and assemble the sealing member 310, which is convenient for the user to operate.

As also shown in fig. 8, a rigid support base 330 is provided on the dirt box 3, and the seal member 310 is provided on the support base 330. Fig. 7(a) and 7(b) show the structure of the support base 330 alone. The support base 330 has a passage communicating with the interior of the dirt tank 3, the passage forming the outlet 301 as described hereinbefore. The support seat 330 maintains the seal 310 in a desired shape and facilitates the overall removal and installation of the seal 310. Specifically, the supporting base 330 includes a loading plate 351 having a through hole, and a wing 353 corresponding to the button 340 is formed on the loading part 351. Further, an inner cylinder 352 is formed on the carrier plate 351 around the through hole, the inner cylinder 352 surrounds the passage 301, an outer cylinder 354 is provided at a distance radially outside the inner cylinder 352, and the inner cylinder 352 and the outer cylinder 354 are on the same side as the carrier plate 351. Screw hole columns 355 are provided in the gap between the inner cylinder 352 and the outer cylinder 354 to facilitate the mounting of the support base 330.

The seal 310 is fixedly engaged with the support base 330. For example, the sealing member 310 is formed on the carrying plate 351 through an encapsulation process. Encapsulation processes are well known to those skilled in the art and will not be described in detail herein. In addition, the sealing member 310 is formed by encapsulating the supporting base 330, so that the sealing member 310 and the supporting base 330 form an inseparable whole, thereby facilitating the assembly and disassembly of the sealing member 310. In this case, the base 311, the first seal lip 313, and the second seal lip 314 may be made of the same elastic material to simplify the manufacturing (e.g., encapsulation) process.

As shown in fig. 8, a holder 331 is provided at an opening of the housing 300 of the waste tank 3, and the holder 331 has an opening 334 communicating with the inside of the waste tank 3. The support base 330 is mounted on the bracket 331 and its passage communicates with the opening 334. In one embodiment, the support base 330 is coupled to the bracket 331 via screws (e.g., screws mounted to screw holes 355). Various other devices may be provided on the support 331 to enable the cleaning apparatus 1 to perform more functions. For example, when the cleaning apparatus 1 is used as a scrubber, a level sensor may be provided on the bracket 331 to facilitate monitoring of the level of liquid in the dirt tank 3 when the cleaning apparatus 1 is in use. As another example, a cyclone 335 may be further provided in the opening 334 of the holder 331, the cyclone 335 communicating with the interior of the housing 300 and the passageway of the support 330. The cyclonic separation system 335 may further separate debris and/or water droplets entrained in the airflow from the bin 300 to effect further separation. Other devices mounted on the support 331 are not relevant to solve the technical problem of the present application and will not be described herein. In addition, the opening 334 of the holder 331 is smaller than that of the case 300, so that the support base 330 and the packing 310 can be constructed to be smaller, facilitating the manufacture and assembly of the support base 330 and the packing 310.

An upper cover 332 is also mounted on the holder 331. As shown in fig. 9, the upper cover 332 is configured with a fitting hole 333, and the sealing member 310 and the support seat 330 are seated in the fitting hole 333. The upper cover 332 serves as a position-limiting and assembly-guiding function for the support seat 330 and the sealing member 310, which facilitates the assembly of the support seat 330 and the sealing member 310 by a user.

The following describes the disassembly and use of the filth case 3 equipped with the sealing member 310.

When the dirt box 3 is mounted, the dirt box 3 is lifted upwards and pushed in the mounting direction a towards the main body 2 (e.g. the carrying structure 20). The second seal lip 314 of the seal 310 is forward in the mounting direction a, so the second seal lip 314 contacts the main body 2 first. Subsequently, the first seal lip 313 also contacts the main body 2. The second seal lip 314 is fixed by the fixing body 317 without being folded over. The first sealing lip 313 is also not folded over since it extends away from the mounting direction a.

When the air is sucked into the waste tank 3, the air pressure in the waste tank 3 is reduced. The first and second seal lips 313 and 314 seal the fluid passage 370 (formed by joining the outlet 301 and the air inlet 21, for example) of the waste tank 3 and the negative pressure source 22 by the external atmospheric pressure.

When the dirt box 3 is detached, the dirt box 3 is pulled to rotate away from the main body 2 in a direction opposite to the mounting direction a. The first seal lip 313 is first separated from the main body 2 without being scraped and folded by the structure on the main body 2. The second seal lip 314 is not scraped by the structure on the main body 2 and folded over as in the case of mounting the filth box 3.

It should be understood that the above-mentioned examples are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the present application. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims (19)

1. A cleaning device, comprising:

a main body (2) which is provided with a plurality of grooves,

a suction nozzle (4) mounted on the body (2) and adapted to be moved over a surface to be cleaned,

the main body (2) also carries a source of negative pressure (22) and a dirt tank (3), the inlet of the dirt tank (3) being in fluid communication with the suction nozzle (4), the outlet (301) being in fluid communication with the source of negative pressure (22),

-a seal (310) is mounted at the outlet (301), the seal (310) comprising a first resilient sealing lip (313) and a second resilient sealing lip (314) sealing a fluid passage (370) between the outlet (301) and the negative pressure source (22), the second sealing lip (314) being in front of the first sealing lip (313) in a mounting direction of the dirt box (3), the first sealing lip (313) extending away from the mounting direction, the second sealing lip (314) extending towards the mounting direction,

the seal (310) further comprises a fixing body (317), the fixing body (317) being connected to a free end of the second sealing lip (314) to maintain the second sealing lip (314) in a flat state.

2. The cleaning device according to claim 1, characterized in that the seal (310) comprises a base body (311) extending towards the mounting direction, the first sealing lip (313) and the second sealing lip (314) being formed on the base body (311),

the second seal lip (314) includes a support portion (315) extending vertically and a seal portion (316) extending radially outward from a tip end of the support portion (315), and the fixing body (317) connects the seal portion (316) with the base body (311).

3. The cleaning device according to claim 2, characterized in that the fixation body (317) comprises a first rib (321), the first rib (321) being spaced apart from the support portion (315).

4. A cleaning device as claimed in claim 3, characterized in that the first ribs (321) are sheet-like.

5. A cleaning device according to claim 4, characterized in that the ratio of the width of the first bead (321) to the circumferential extension of the sealing portion (316) is between 1:1 and 1: 6.

6. The cleaning device according to any one of claims 3 to 5, wherein the thickness of the first rib (321) is the same as the thickness of the sealing portion (316).

7. A cleaning device according to claim 3 or 5, characterized in that the first bead (321) is at a position where the radial dimension of the sealing portion (316) is maximal.

8. A cleaning device as claimed in claim 7, characterized in that the first bead (321) is in the middle of the circumferential extension of the sealing portion (316).

9. The cleaning device according to claim 4 or 5, characterized in that the connection location (318) of the first rib (321) to the base body (311) is radially outside of the orthographic projection of the sealing portion (316) on the base body (311) such that the face of the first rib (321) facing the mounting direction of the dirt box (3) is a slope.

10. The cleaning device as claimed in any of claims 2 to 4, characterized in that the fixing body (317) further comprises a second rib (322), the second rib (322) being connected with the support portion (315).

11. A cleaning device as claimed in claim 10, characterized in that the width of the second ribs (322) is between 1mm-2mm and the distance between adjacent second ribs (322) is between 7mm-10 mm.

12. The cleaning device as recited in claim 10, characterized in that the second bead (322) is at least at an end of the sealing portion (316).

13. The cleaning device as recited in claim 11, characterized in that the second bead (322) is within the confines of the seal (316).

14. The cleaning device as claimed in claim 2, characterized in that the fixing body (317) is formed integrally with the second sealing lip (314).

15. The cleaning device according to claim 1 or 2, characterized in that the seal (310) is quadrangular, the first sealing lip (313) and the second sealing lip (314) forming two opposite sides of the quadrangle, and between the first sealing lip (313) and the second sealing lip (314) there are also sealing lips forming the other two sides of the quadrangle.

16. A cleaning device as claimed in claim 1 or 2, characterized in that a rigid support base (330) is provided on the dirt box (3), the seal (310) being provided on the support base (330), the support base (330) having a passage communicating with the interior of the dirt box (3), the passage forming the outlet (301).

17. The cleaning apparatus of claim 16, wherein the seal (310) is fixedly engaged with the support base (330).

18. The cleaning apparatus according to claim 17, wherein the filth tank (3) comprises a tank body (300) and a bracket (331) mounted on an opening of the tank body (300), the bracket (331) having an opening (334) communicating with the inside of the filth tank (3), the support base (330) being mounted on the bracket (331) and the passage communicating with the opening (334).

19. The cleaning device according to claim 18, wherein an upper cover (332) is further mounted on the bracket (331), a fitting hole (333) is configured on the upper cover (332), and the sealing member (310) and the supporting seat (330) are located in the fitting hole (333).

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