Sealing structure and cleaning device

Abstract

The utility model relates to a sealing structure and a cleaning device, and the sealing structure comprises an inner container which is provided with a washing cavity with an opening in one side; the door body is rotationally connected with the inner container so as to open or close the opening; the first sealing strips are arranged on the side wall and the top wall of the washing cavity; the second sealing strip is arranged at the bottom of the door body; the sealing corner pad is arranged between the end of the second sealing strip and the opposite side wall of the washing cavity, an abutting face capable of abutting against the bottom wall and / or the side wall of the door body is formed on the sealing corner pad, and when the door body is in a closed state, the abutting face, the first sealing strip and the second sealing strip are matched to seal a connecting gap between the inner container and the door body. According to the sealing structure, the sealing corner pads are located between the ends of the second sealing strips and the opposite side walls of the washing cavity, on one hand, the sealing corner pads can be matched with the door body to normally rotate, and on the other hand, when the door body is in the closed state, the sealing corner pads seal the connecting gaps between the corners of the door body and the inner wall of the washing cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a sealing structure and a cleaning device. Background Art

[0002] As a tableware washing appliance, a dishwasher mainly includes a door body and an inner container forming a washing cavity. The door body is rotatably arranged at the opening of the inner container so as to open or close the opening. In order to better seal the washing cavity, generally, a dishwasher on the market at present improves the sealed connection between the door body and the inner container through an inner container sealing body fixed on the inner container and a door bottom sealing strip fixed under the door body. However, there are usually assembly gaps formed between the two ends of the door bottom sealing strip and the side wall of the inner container to facilitate the rotation movement of the door body. Therefore, after the door body is closed, there are still sealing dead corners at the connection between the corners of the door body and the inner wall of the washing cavity. During the washing process, the washing water or steam in the washing cavity may leak to the outside of the dishwasher from the sealing dead corners, affecting the user experience. Summary of the Utility Model

[0003] Based on this, in view of the problem that there are still sealing dead corners at the connection between the corners of the door body and the inner wall of the washing cavity, and the washing water or steam in the washing cavity may leak to the outside of the dishwasher from the sealing dead corners during the washing process, it is necessary to provide a sealing structure and a cleaning device.

[0004] A sealing structure includes: an inner container, which forms a washing cavity with one side open; a door body, which is rotatably connected to the inner container and is used to open or close the opening; a first sealing strip, which is located on the side of the washing cavity close to the opening, and the first sealing strip extends along the circumference of the opening and is arranged on the side wall and the top wall of the washing cavity; a second sealing strip, which is arranged horizontally at the bottom of the door body; a sealing corner pad, which is arranged between the end of the second sealing strip and the opposite side wall of the washing cavity, and the sealing corner pad forms an abutting surface capable of abutting against the bottom wall and / or the side wall of the door body. In the state where the door body is closed, the abutting surface, the first sealing strip and the second sealing strip cooperate to seal the connection gap between the inner container and the door body.

[0005] The present application provides a sealing structure. The sealing corner pad is installed at the assembly gap between the end of the second sealing strip and the side wall of the opposite washing cavity. On the one hand, the sealing corner pad can cooperate with the normal rotation of the door body. On the other hand, its abutting surface can be tightly connected to the side wall and / or the bottom wall of the door body at the bottom corner of the door body. When the door body is in the closed state, the peripheral edge of the side wall of the door body facing away from the opening and the bottom wall are respectively hermetically connected to the inner wall of the inner tank through the first sealing strip and the second sealing strip. At the same time, the sealing corner pad seals the connection gap between the door body corner and the inner wall of the washing cavity. Thus, through the cooperation of the abutting surface, the first sealing strip and the second sealing strip, a full-sealing effect without dead corners can be formed between the inner wall of the washing cavity and the door body, thereby effectively reducing the risk of water flow and steam overflowing outside the machine.

[0006] In one embodiment, the abutting surface includes a first abutting section and a second abutting section. The first abutting section is arranged along the height direction of the inner tank. The second abutting section extends horizontally inward from the bottom end of the first abutting section. In the state where the door body is closed, the first abutting section abuts against the lower end of the side wall of the door body, and the second abutting section abuts against the bottom wall of the door body. The first abutting section is arranged along the height direction of the inner tank so as to be adaptively connected to the side wall at the corner of the door body. The second abutting section is arranged horizontally so as to be adaptively connected to the bottom wall at the corner of the door body. Thus, when the door body is closed, the sealing corner pad can seal the connection gap between the door body corner and the inner wall of the washing cavity, improving the sealing performance of the sealing structure, preventing water flow and steam from overflowing outside the machine, and enhancing the user experience.

[0007] In one embodiment, the sealing corner pad includes a sealing portion and a positioning portion. The sealing portion is located on the side of the first sealing strip close to the opening. The sealing portion is formed with the abutting surface. The positioning portion is arranged on the sealing portion. The positioning portion is used for positioning and cooperating with the inner tank and / or the first sealing strip to fix the sealing portion. By adopting the above structure, the cooperation and installation of the positioning portion with the inner tank and / or the first sealing strip can limit the sealing portion. Thus, it is convenient for the sealing corner pad to be quickly positioned to the preset installation position, ensuring that the abutting surface of the sealing portion can effectively seal and abut against the door body. At the same time, it is beneficial to the firm installation of the sealing corner pad, avoiding the friction of the sealing corner pad when the door body opens and closes and the movement caused by the impact of water flow on the sealing corner pad during the operation of the cleaning device, which reduces the sealing effect.

[0008] In one embodiment, the positioning portion includes a first positioning portion. The first positioning portion is arranged on the sealing portion. The first positioning portion is located on the side of the door body away from the washing cavity. The first positioning portion is adaptively installed with the bottom plate of the inner tank. By providing the first positioning portion that is adaptively installed with the bottom plate of the inner tank, it is convenient for the accurate arrangement of the sealing portion and beneficial to improving the installation speed.

[0009] In one embodiment, the first positioning portion includes a positioning seat and a flanging portion. One end of the positioning seat is connected to the sealing portion, and the peripheral edge of the other end of the positioning seat extends outward to form the flanging portion. A limiting groove is formed between the flanging portion and the outer wall of the positioning seat. A convex rib is formed on the peripheral edge of the bottom plate of the inner tank near the open end, and the convex rib is adaptively installed in the limiting groove. By adopting the above structure, the flanging portion and the positioning seat can cooperate to form a limiting groove, and the convex rib formed by the protrusion of the bottom plate of the inner tank can be adaptively installed in the limiting groove, thereby forming a limiting effect on the first positioning portion, and further enabling the sealing portion to be stably installed at a preset position.

[0010] In one embodiment, a water retaining groove is provided on one side of the first positioning portion close to the sealing portion. One side of the abutting surface close to the open end extends to the opening of the water retaining groove, and the water retaining groove is used to prevent the washing water in the washing cavity from overflowing to the outside. To further reduce the risk of the washing water of the cleaning device overflowing to the outside, for the unexpected situation where the washing water flows out through the connection between the abutting surface and the door body due to factors such as the door body not being closed in place or the sealing portion being worn, by providing a water retaining groove on the first positioning portion, the overflowing water will flow into the water retaining groove for collection, avoiding flowing out of the device.

[0011] In one embodiment, a water retaining rib is formed by the top of the inner side wall of the water retaining groove far from the sealing portion protruding, and the water retaining rib extends in the direction close to the sealing portion. There is a water retaining rib at the top of the side wall of the water retaining groove far from the sealing portion. When the intensity of the overflowing water flow is large and impacts the inner side wall of the water retaining groove, the water retaining rib can block the splashing water, avoiding the water from wetting the external environment of the device.

[0012] In one embodiment, the water retaining rib is inclinedly arranged at the top of the inner side wall of the water retaining groove. This can facilitate the water to flow back into the water retaining groove along the water retaining rib after colliding with the water retaining rib.

[0013] In one embodiment, the water retaining rib is arranged in the horizontal direction.

[0014] In one embodiment, the positioning portion includes a second positioning portion. The second positioning portion is arranged on the side of the sealing portion far from the open end, at least part of the second positioning portion is located below the first sealing strip, and one side of the first sealing strip facing the inner wall of the washing cavity abuts against the second positioning portion. By adopting the above structure, after the first sealing strip is assembled, its bottom can coincide with the second positioning portion and press the second positioning portion downward at the same time. Thus, the sealing corner pad can be accurately and firmly installed at a preset position, without tilting upward to hinder the opening and closing of the door body, and ensuring that the second positioning portion is closely attached to the inner wall of the washing cavity, avoiding water from entering the gap between the sealing corner pad and the inner wall of the washing cavity.

[0015] In one embodiment, the lower end of the first sealing strip extends horizontally inward to form an extension section, and the bottom wall of the extension section abuts against the second positioning portion. The formation of the extension section can further strengthen the fastening effect on the second positioning portion, and the extension section can block the washing water to prevent the water flow from directly impacting the connection between the abutting surface and the door body.

[0016] The second aspect of the present application provides a cleaning device.

[0017] A cleaning device includes: the above-mentioned sealing structure; a water system that communicates with the washing cavity, and the water system is used to supply water to the washing cavity and / or drain the liquid in the washing cavity; a cleaning component disposed in the washing cavity, and the cleaning component is used to clean the parts to be cleaned in the washing cavity. For the cleaning device disclosed in the second aspect of the present application, by providing the sealing structure of any one of the foregoing, when the door body is in the closed state, the peripheral side wall and the bottom wall of the door body facing away from the open end are respectively sealed and connected to the inner wall of the inner container through the first sealing strip and the second sealing strip. At the same time, the sealing corner pad seals the connection gap between the door body corner and the inner wall of the washing cavity. Thus, through the cooperation of the abutting surface, the first sealing strip and the second sealing strip, a full-sealing effect without dead corners can be formed between the inner wall of the washing cavity and the door body, thereby effectively reducing the risk of washing water and steam overflowing outside the machine during the cleaning process of the cleaning device. Description of the Drawings

[0018] Figure 1 Is a perspective view of the sealing structure of an embodiment (when the door body is open);

[0019] Figure 2 Is a first sectional view of the sealing structure of an embodiment (when the door body is closed);

[0020] Figure 3 For Figure 2 An enlarged view of area A of;

[0021] Figure 4 Is a second sectional view of the sealing structure of an embodiment (when the door body is closed);

[0022] Figure 5 For Figure 4 An enlarged view of area B of;

[0023] Figure 6 Is a perspective view of the sealing corner pad of an embodiment.

[0024] Among them, the correspondence between the reference numerals and the component names is as follows:

[0025] 1 Inner container, 101 Washing cavity, 102 Open end, 11 Bottom plate, 111 Convex rib;

[0026] 2 Door body;

[0027] 3 First sealing strip, 31 Extension section;

[0028] 4 Second sealing strip;

[0029] 5 Sealing corner pad, 501 Limit groove, 502 Water retaining groove, 51 Sealing part, 511 Contact surface, 5111 First contact section, 5112 Second contact section, 52 Positioning part, 521 First positioning part, 5211 Positioning seat, 5212 Flanging part, 5213 Water retaining rib, 522 Second positioning part. Detailed implementation manners

[0030] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0032] The following describes some embodiments of the sealing structure of the present invention with reference to the drawings.

[0033] As Figures 1 to 6 shown, this embodiment discloses a sealing structure, including: an inner container 1, the inner container 1 forms a washing cavity 101 with an open side 102; a door body 2, the door body 2 is rotatably connected to the inner container 1, and the door body 2 is used to open or close the open side 102; a first sealing strip 3, the first sealing strip 3 is located on the side of the washing cavity 101 close to the open side 102, and the first sealing strip 3 extends along the circumference of the open side 102 and is arranged on the side wall and the top wall of the washing cavity 101; a second sealing strip 4, the second sealing strip 4 is arranged horizontally at the bottom of the door body 2; a sealing corner pad 5, the sealing corner pad 5 is arranged between the end of the second sealing strip 4 and the opposite side wall of the washing cavity 101, and the sealing corner pad 5 forms a contact surface 511 that can abut against the bottom wall and / or the side wall of the door body 2. In the state where the door body 2 is closed, the contact surface 511, the first sealing strip 3 and the second sealing strip 4 cooperate to seal the connection gap between the inner container 1 and the door body 2.

[0034] The present application provides a sealing structure. The sealing corner pad 5 is installed at the assembly gap between the end of the second sealing strip 4 and the side wall of the opposite washing cavity 101. On the one hand, the sealing corner pad 5 can cooperate with the normal rotation of the door body 2. On the other hand, its abutting surface 511 can be tightly connected to the side wall and / or the bottom wall of the door body 2 at the bottom corner of the door body 2. When the door body 2 is in the closed state, the side wall periphery and the bottom wall of the door body 2 facing away from the opening 102 are respectively sealed and connected to the inner wall of the inner container 1 through the first sealing strip 3 and the second sealing strip 4. At the same time, the sealing corner pad 5 seals the connection gap between the corner of the door body 2 and the inner wall of the washing cavity 101. Thus, through the cooperation of the abutting surface 511, the first sealing strip 3 and the second sealing strip 4, a dead - free full - sealing effect can be formed between the inner wall of the washing cavity 101 and the door body 2, thereby effectively reducing the risk of water flow and steam spilling out of the machine.

[0035] As Figure 3 and Figure 6 shown, in addition to the features of the above - mentioned embodiments, the present embodiment further defines that: the abutting surface 511 includes a first abutting section 5111 and a second abutting section 5112. The first abutting section 5111 is arranged along the height direction of the inner container 1, and the second abutting section 5112 extends horizontally inwards from the bottom end of the first abutting section 5111. When the door body 2 is in the closed state, the first abutting section 5111 abuts against the lower end of the side wall of the door body 2, and the second abutting section 5112 abuts against the bottom wall of the door body 2. The first abutting section 5111 is arranged along the height direction of the inner container 1 so as to be adaptively connected to the side wall at the corner of the door body 2, and the second abutting section 5112 is arranged horizontally so as to be adaptively connected to the bottom wall at the corner of the door body 2. Thus, when the door body 2 is closed, the sealing corner pad 5 can seal the connection gap between the corner of the door body 2 and the inner wall of the washing cavity 101, improving the sealing performance of the sealing structure, avoiding water flow and steam spilling out of the machine, and enhancing the user experience.

[0036] As Figures 2 to 6 shown, in addition to the features of the above - mentioned embodiments, the present embodiment further defines that: the sealing corner pad 5 includes a sealing portion 51 and a positioning portion 52. The sealing portion 51 is located on the side of the first sealing strip 3 close to the opening 102. The sealing portion 51 is formed with an abutting surface 511. The positioning portion 52 is arranged on the sealing portion 51, and the positioning portion 52 is used for positioning and cooperating with the inner container 1 and / or the first sealing strip 3 to fix the sealing portion 51. By adopting the above structure, the cooperation and installation of the positioning portion 52 with the inner container 1 and / or the first sealing strip 3 can limit the sealing portion 51. Thus, it is convenient for the sealing corner pad 5 to be quickly positioned to the preset installation position, ensuring that the abutting surface 511 of the sealing portion 51 can effectively seal and abut against the door body 2. At the same time, it is beneficial to the firm installation of the sealing corner pad 5, avoiding the friction of the sealing corner pad 5 when the door body 2 opens and closes and the movement of the sealing corner pad 5 caused by the impact of water flow during the operation of the cleaning device, thereby reducing the sealing effect.

[0037] AsFigure 5 and Figure 6 As shown in Figure 6 , in addition to the features of the above embodiments, this embodiment further defines that the positioning portion 52 includes a first positioning portion 521. The first positioning portion 521 is provided on the sealing portion 51. The first positioning portion 521 is located on the side of the door body 2 away from the washing cavity 101. The first positioning portion 521 is adaptively installed with the bottom plate 11 of the inner tank 1. By providing the first positioning portion 521 that cooperates with the bottom plate 11 of the inner tank 1, the accurate arrangement of the sealing portion 51 can be facilitated, and the installation speed can be improved.

[0038] As Figure 5 and Figure 6 As shown in Figure 6 , in addition to the features of the above embodiments, this embodiment further defines that the first positioning portion 521 includes a positioning seat 5211 and a flanging portion 5212. One end of the positioning seat 5211 is connected to the sealing portion 51. The other end of the positioning seat 5211 extends outwardly around the periphery to form the flanging portion 5212. A limiting groove 501 is formed between the flanging portion 5212 and the outer wall of the positioning seat 5211. A convex rib 111 is formed on the periphery of the side of the bottom plate 11 of the inner tank 1 close to the opening 102. The convex rib 111 is adaptively installed in the limiting groove 501. By adopting the above structure, the flanging portion 5212 and the positioning seat 5211 can cooperate to form the limiting groove 501, and the convex rib 111 formed by the protrusion of the bottom plate 11 of the inner tank 1 can be adaptively installed with the limiting groove 501, thereby forming a limiting effect on the first positioning portion 521, and further enabling the sealing portion 51 to be stably installed at the preset position.

[0039] As Figure 3 and Figure 6 As shown in Figure 6 , in addition to the features of the above embodiments, this embodiment further defines that a water retaining groove 502 is provided on the side of the first positioning portion 521 close to the sealing portion 51. The side of the abutting surface 511 close to the opening 102 extends to the opening of the water retaining groove 502. The water retaining groove 502 is used to block the washing water in the washing cavity 101 from overflowing to the outside. To further reduce the risk of the washing water of the cleaning device overflowing to the outside, for the accidental situation where the washing water flows out through the connection between the abutting surface 511 and the door body 2 due to factors such as the door body 2 not being closed in place or the sealing portion 51 being worn, by providing the water retaining groove 502 on the first positioning portion 521, the overflowing water will flow into the water retaining groove 502 for collection, avoiding flowing out of the device.

[0040] As Figure 5 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further defines that: at the top of the inner side wall of the water retaining groove 502 away from the sealing portion 51, a water retaining rib 5213 is formed, and the water retaining rib 5213 extends towards the direction close to the sealing portion 51. A water retaining rib 5213 is provided at the top of the side wall of the water retaining groove 502 away from the sealing portion 51. When the overflow water flow intensity is large and impacts the inner side wall of the water retaining groove 502, the water retaining rib 5213 can block the splashing water flowers and prevent the water flowers from wetting the external environment of the device.

[0041] As Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the water retaining rib 5213 is inclinedly arranged at the top of the inner side wall of the water retaining groove 502. Thus, it is convenient for the water flowers to flow back into the water retaining groove 502 along the water retaining rib 5213 after colliding with the water retaining rib 5213.

[0042] As Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the water retaining rib 5213 is arranged along the horizontal direction.

[0043] As Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the positioning portion 52 includes a second positioning portion 522, the second positioning portion 522 is arranged on the side of the sealing portion 51 away from the open end 102, at least part of the second positioning portion 522 is located below the first sealing strip 3, and one side of the first sealing strip 3 facing the inner wall of the washing cavity 101 abuts against the second positioning portion 522. By adopting the above structure, after the first sealing strip 3 is assembled, its bottom can coincide with the second positioning portion 522 and press the second positioning portion 522 downward at the same time. Thus, the sealing angle pad 5 can be accurately and firmly installed at the preset position, will not tilt upward to hinder the opening and closing of the door body 2, and ensure that the second positioning portion 522 is closely attached to the inner wall of the washing cavity 101 to prevent water from entering the gap between the sealing angle pad 5 and the inner wall of the washing cavity 101.

[0044] As Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the lower end of the first sealing strip 3 extends horizontally inwards to form an extension section 31, and the bottom wall of the extension section 31 abuts against the second positioning portion 522. The formation of the extension section 31 can further strengthen the fastening effect on the second positioning portion 522, and the extension section 31 can block the washing water to prevent the water flow from directly impacting the connection between the abutting surface 511 and the door body 2.

[0045] The second aspect of the present application provides a cleaning device.

[0046] This embodiment discloses a cleaning device, including: the above-mentioned sealing structure; a water system, which is communicated with the washing chamber 101, and the water system is used to supply water to the washing chamber 101 and / or discharge the liquid in the washing chamber 101; a cleaning assembly, which is arranged in the washing chamber 101, and the cleaning assembly is used to clean the parts to be cleaned in the washing chamber 101. For the cleaning device disclosed in the second aspect of the present application, by setting the sealing structure of any one of the foregoing, when the door body 2 is in the closed state, the peripheral edge and the bottom wall of the side wall of the door body 2 facing away from the opening 102 are respectively sealed and connected to the inner wall of the inner container 1 through the first sealing strip 3 and the second sealing strip 4. At the same time, the sealing corner pad 5 seals the connection gap between the corners of the door body 2 and the inner wall of the washing chamber 101. Thus, through the cooperation of the abutting surface 511, the first sealing strip 3 and the second sealing strip 4, a full-sealing effect without dead corners can be formed between the inner wall of the washing chamber 101 and the door body 2, thereby effectively reducing the risk of washing water and steam overflowing outside the machine during the cleaning process of the cleaning device.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-mentioned embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A sealing structure, characterized in that, Comprising: Inner container (1), a washing cavity (101) with an open side (102) is formed in the inner container (1); Door body (2), the door body (2) is rotatably connected to the inner container (1), and the door body (2) is used to open or close the open side (102); First sealing strip (3), the first sealing strip (3) is located on the side of the washing cavity (101) close to the open side (102), and the first sealing strip (3) extends along the circumference of the open side (102) and is arranged on the side wall and the top wall of the washing cavity (101); Second sealing strip (4), the second sealing strip (4) is arranged horizontally at the bottom of the door body (2); Sealing corner pad (5), the sealing corner pad (5) is arranged between the end of the second sealing strip (4) and the opposite side wall of the washing cavity (101), and the sealing corner pad (5) is formed with an abutting surface (511) that can abut against the bottom wall and / or the side wall of the door body (2). In the state where the door body (2) is closed, the abutting surface (511), the first sealing strip (3) and the second sealing strip (4) cooperate to seal the connection gap between the inner container (1) and the door body (2).

2. The sealing structure according to claim 1, wherein The abutting surface (511) includes a first abutting section (5111) and a second abutting section (5112). The first abutting section (5111) is arranged along the height direction of the inner container (1), and the second abutting section (5112) extends horizontally inward from the bottom end of the first abutting section (5111). In the state where the door body (2) is closed, the first abutting section (5111) abuts against the lower end of the side wall of the door body (2), and the second abutting section (5112) abuts against the bottom wall of the door body (2).

3. The sealing structure according to claim 1, characterized in that, The sealing corner pad (5) includes a sealing part (51) and a positioning part (52). The sealing part (51) is located on the side of the first sealing strip (3) close to the open side (102), and the sealing part (51) is formed with the abutting surface (511). The positioning part (52) is arranged on the sealing part (51), and the positioning part (52) is used for positioning and cooperating with the inner container (1) and / or the first sealing strip (3) to fix the sealing part (51).

4. The sealing structure according to claim 3, characterized in that, The positioning part (52) includes a first positioning part (521). The first positioning part (521) is arranged on the sealing part (51), and the first positioning part (521) is located on the side of the door body (2) away from the washing cavity (101). The first positioning part (521) is adaptively installed with the bottom plate (11) of the inner container (1).

5. The sealing structure according to claim 4, characterized in that, The first positioning portion (521) includes a positioning seat (5211) and a flanging portion (5212). One end of the positioning seat (5211) is connected to the sealing portion (51). The peripheral edge of the other end of the positioning seat (5211) extends outward to form the flanging portion (5212). A limiting groove (501) is formed between the flanging portion (5212) and the outer wall of the positioning seat (5211). A convex rib (111) is formed on the peripheral edge of the bottom plate (11) of the inner tank (1) near the open end (102). The convex rib (111) is fitted and installed in the limiting groove (501).

6. The sealing structure according to claim 4, wherein A water retaining groove (502) is provided on one side of the first positioning portion (521) close to the sealing portion (51). One side of the abutting surface (511) close to the open end (102) extends to the opening of the water retaining groove (502). The water retaining groove (502) is used to prevent the washing water in the washing cavity (101) from overflowing to the outside.

7. The sealing structure according to claim 6, characterized in that, The top of the inner side wall of the water retaining groove (502) far from the sealing portion (51) protrudes to form a water retaining rib (5213). The water retaining rib (5213) extends in the direction close to the sealing portion (51).

8. The sealing structure according to claim 3, characterized in that, The positioning portion (52) includes a second positioning portion (522). The second positioning portion (522) is arranged on the side of the sealing portion (51) far from the open end (102). At least part of the second positioning portion (522) is located below the first sealing strip (3). One side of the first sealing strip (3) facing the inner wall of the washing cavity (101) abuts against the second positioning portion (522).

9. The sealing structure according to claim 8, characterized in that, The lower end of the first sealing strip (3) extends horizontally inward to form an extension section (31). The bottom wall of the extension section (31) abuts against the second positioning portion (522).

10. A cleaning device, characterized in that, Comprising; The sealing structure according to any one of claims 1 to 9; A water system, the water system is communicated with the washing cavity (101), and the water system is used to supply water to the washing cavity (101) and / or discharge the liquid in the washing cavity (101); A cleaning assembly, the cleaning assembly is arranged in the washing cavity (101), and the cleaning assembly is used to clean the parts to be cleaned in the washing cavity (101).

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