Recycling box and wet-type cleaning equipment

Abstract

The invention discloses a recycling box and wet type cleaning equipment. The recycling box comprises a first box body and a first cover body. A first space capable of containing dirt is defined by the first box body, and a first opening is defined by the first box body. The first cover body is movably installed on the first opening so as to close / open the first opening. The first box body further comprises a vertical pipe, the vertical pipe comprises a liquid inlet, a liquid outlet and a liquid inlet channel located between the liquid inlet and the liquid outlet, and fluid flows out of the liquid outlet and then enters the first space. The first box body further comprises an air outlet pipe, the air outlet pipe comprises a first part located on the first box body and a second part located on the first cover body, and the first part and the second part jointly define an air inlet of the air outlet pipe. The air outlet pipe further comprises an air outlet and an air outlet channel located between the air inlet and the air outlet. The floater is movably arranged at the air outlet pipe, and when the liquid level in the first space reaches a preset value, the floater can move to the air inlet along with the liquid level and seal at least part of the air inlet.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly to a recycling box and a wet cleaning equipment. Background Art

[0002] Wet cleaning equipment generally includes a recycling box, which is mainly used for recycling liquid dirt. The recycling box generally includes a liquid inlet pipe and an air outlet pipe. Dirt and the like are recycled into the interior of the recycling box under the action of a suction air flow. When the recycling box is full of dirt, the recycling box needs to be cleaned.

[0003] When a user pours sewage, if the air inlet of the air outlet pipe is on the sewage pouring path, then a small amount of sewage may enter the air inlet and then leak out from the air outlet, which will affect the user experience. Summary of the Invention

[0004] In view of the deficiencies in the above technologies, the present invention provides a recycling box and a wet cleaning equipment. By using the above recycling box, the backflow of dirt into the air outlet pipe can be avoided.

[0005] On the one hand, the present invention provides a recycling box, including A first box body, which defines a first space for accommodating dirt. The first box body defines a first opening. A first cover body, which is movably installed at the first opening to close / open the first opening. The first box body further includes a riser pipe, which includes a liquid inlet, a liquid outlet, and a liquid inlet channel located between the liquid inlet and the liquid outlet. Fluid flows out from the liquid outlet and enters the first space. The first box body further includes an air outlet pipe, which includes a first part located in the first box body and a second part located in the first cover body. The first part and the second part jointly define the air inlet of the air outlet pipe. The air outlet pipe further includes an air outlet and an air outlet channel located between the air inlet and the air outlet. A float, which is movably arranged at the air outlet pipe. When the liquid level in the first space reaches a preset value, the float can move with the liquid level to the air inlet and close at least part of the air inlet.

[0006] Optionally, the first part includes a first pipe body integrally formed with the first box body; the second part includes a second baffle extending from the inner wall of the first cover body; the second baffle and the first pipe body jointly define the air inlet.

[0007] Optionally, a sealing structure is provided between the first pipe body and the second baffle, and the sealing structure is configured to prevent air flow from passing through the place where the first pipe body and the second baffle contact.

[0008] Optionally, the upper edge of the first pipe body is not lower than the upper edge of the first box body.

[0009] Optionally, the air outlet channel includes a first channel and a second channel located downstream of the first channel, and there is an angle between the first channel and the second channel.

[0010] Optionally, the first channel is substantially parallel to the riser pipe; the second channel is substantially vertically arranged on the surface to be cleaned.

[0011] Optionally, the outer wall of the air outlet pipe forms a part of the outer wall of the first box body.

[0012] Optionally, a gas-liquid separator near the liquid outlet is used for gas-liquid separation of the fluid flowing out of the liquid outlet, wherein the gas-liquid separator is arranged on the inner wall of the first cover body and can move together with the first cover body.

[0013] Optionally, the gas-liquid separator is integrally formed with the first cover body.

[0014] On the other hand, the present invention also provides a wet cleaning device, which includes: a body, which includes a suction motor for generating a suction air flow; and the above-mentioned recovery box, and the recovery box is detachably installed on the body.

[0015] The present invention provides a recovery box and a wet cleaning device. The recovery box includes a first box body and a first cover body. The first box body defines a first space for accommodating dirt, and the first box body defines a first opening. The first cover body is movably installed at the first opening to close / open the first opening. The first box body further includes a riser pipe, and the riser pipe includes a liquid inlet, a liquid outlet, and a liquid inlet channel located between the liquid inlet and the liquid outlet. The fluid flows into the first space after flowing out of the liquid outlet. The first box body further includes an air outlet pipe, and the air outlet pipe includes a first part located in the first box body and a second part located in the first cover body. The first part and the second part jointly define an air inlet of the air outlet pipe; the air outlet pipe further includes an air outlet and an air outlet channel located between the air inlet and the air outlet. A float is movably arranged at the air outlet pipe. When the liquid level in the first space reaches a preset value, the float can move with the liquid level to the air inlet and close at least part of the air inlet. The air inlet is jointly defined by the first cover body and the first box body, which can make the position of the air inlet avoid the sewage discharge path and prevent the sewage from entering the air outlet channel only through the air inlet. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a floor sweeping robot in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of an upright vacuum cleaner in an embodiment; Figure 3 Schematic structural diagram of a horizontal vacuum cleaner in an embodiment; Figure 4 For Figure 3 Schematic structural diagram of the horizontal vacuum cleaner in the shown embodiment (after removing the cleaning head and hose); Figure 5 For Figure 3 Schematic structural diagram of the horizontal vacuum cleaner in the shown embodiment from another angle; Figure 6 For Figure 3 Schematic structural diagram of the horizontal vacuum cleaner in the shown embodiment from yet another angle; Figure 7 Exploded view of the structure of the body of a wet cleaning device in an embodiment.

[0017] Figure 8 For the cross-sectional view along the Figure 5 A-A direction in; Figure 9 Cross-sectional view along the length direction of the wet cleaning device; Figure 10 Schematic structural diagram of a liquid storage tank in an embodiment; Figure 11 For Figure 10 Schematic structural diagram of the opened cover in the shown embodiment; Figure 12 Schematic structural diagram of a cover in an embodiment; Figure 13 For the cross-sectional view along the Figure 10 B-B direction in (the air inlet is closed by the float); Figure 14 For the cross-sectional view along the Figure 10 B-B direction in (the air inlet is in the open state); Figure 15 Schematic structural diagram of the cover of the liquid storage tank in an open state in an implementation; Figure 16 For the cross-sectional view along the Figure 10 C-C direction in (the air inlet is in the open state); Figure 17 For Figure 16 Enlarged view of the structure of area D in; Figure 18 For the cross-sectional view along the Figure 10 C-C direction in (the air inlet is in the closed state); Figure 19 Schematic structural diagram of the emptied recovery tank (the air inlet is lower than the outer edge and the sewage flows into the inside of the outlet pipe); Figure 20Schematic diagram of the structure for emptying the recycling bin (the air inlet is higher than or at the same level as the outer edge, and the sewage does not flow into the interior of the outlet pipe). Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0019] It should be noted that if there are directional indications involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0020] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

[0022] Reference Figures 1 - 3, a wet cleaning device 100 is disclosed in the figure. The wet cleaning device 100 can be a horizontal cleaning device, a vertical cleaning device, a handheld cleaning device, or an autonomous cleaning device. The wet cleaning device 100 generally includes a dirt recovery system and / or a cleaning liquid supply system. The dirt recovery system includes a suction motor 3 that generates a suction airflow, a suction pipeline 31 that guides the suction airflow, and a recovery box 1 that recovers dirt. The cleaning liquid supply system is used to provide cleaning liquid, and the cleaning liquid supply system includes a cleaning liquid pump and a cleaning liquid tank 2. The wet cleaning device 100 further includes an electronic control system, which includes electrical components such as a circuit board. The operation and stop of the wet cleaning device 100 can be controlled through the electronic control system. Since the electronic control system is very common in cleaning devices, it will not be described in detail here. This application will be described in detail mainly in terms of structure.

[0023] Reference Figures 4 - 9 , the suction pipeline 31 includes a first pipeline 311 upstream of the suction motor 3 and a second pipeline 312 downstream of the suction motor 3. The dirt recovery system further includes a cooling pipeline 32 for cooling the suction motor 3. The cooling pipeline 32 includes a third pipeline 321 upstream of the suction motor 3 and a fourth pipeline 322 downstream of the suction motor 3. As Figure 8 shown by the arrows in the figure, the arrow in the upper left corner of the figure represents the cooling airflow, and the arrow in the lower right corner represents the suction airflow.

[0024] Reference Figures 5 - 9 , the specific structure in an embodiment will be introduced in detail. The wet cleaning device 100 includes a body 4. The body 4 defines an accommodation space 47 for accommodating the suction motor 3. The wet cleaning device 100 further includes a hose 5 (reference Figure 3 ). One end of the hose 5 is fluidly connected to the first pipeline 311, and a cleaning head 6 is installed at the other end of the hose 5. The body 4 further defines a storage space 41 for storing the hose 5. The body 4 further defines a first air outlet 42 communicating with the second pipeline 312 and a second air outlet 43 communicating with the fourth pipeline 322. The gases discharged from the first air outlet 42 and the second air outlet 43 enter the storage space 41.

[0025] Reference Figure 8, the air flow flowing out from the first air outlet 42 and the second air outlet 43 can be discharged into the storage space 41, which can prevent the air flow from directly blowing towards the ground. At the same time, it can also prevent the air flow from blowing towards other surrounding objects. Both the first air outlet 42 and the second air outlet 43 are arranged with their openings facing downwards. At this time, the air flow directly blows onto the surface of the lower housing 45, and the air flow deflects. At this time, the velocity of the deflected air flow is already very small, and it has little impact on the surrounding objects. In order to disperse the air flow, the first air outlet 42 and the second air outlet 43 are respectively located on both sides of the wet cleaning device 100, and they can also be spaced apart. By setting the two air outlets separately in this way, the air flow can be effectively dispersed and the noise can be reduced.

[0026] Reference Figures 5 - 9 , the body 4 includes an upper housing 44 and a lower housing 45. The upper housing 44 is an integrally formed structure, and the lower housing 45 is an integrally formed structure. Both the upper housing and the lower housing can be formed by injection molding. The body 4 further includes a handle 49, and the handle 49 is arranged on the upper housing 44 and the handle 49 is located above the suction motor 3. A receiving space 47 is defined between the upper housing 44 and the lower housing 45 (Reference Figure 9 ), and a water pump, pipelines, a steam generator and other components are installed in the receiving space 47. As shown in the illustrated embodiment, the wet cleaning device 100 further includes a recovery box 1 and a cleaning liquid box 2. The upper housing 44 defines an installation space 48 (Reference Figure 7 ), and the recovery box 1 and the cleaning liquid box 2 are detachably installed in the installation space 48. In the illustrated embodiment, the lower housing 45 is generally oval in shape, and the lower housing 45 defines a storage space 41. By adopting this design, the mold cost and assembly cost can be effectively reduced.

[0027] Continue to refer to Figures 5 - 9 , the wet cleaning device 100 further includes a motor cover 46 arranged in the body 4. The motor cover 46 and the lower housing 45 jointly define a motor installation cavity. The suction motor 3 is arranged in the motor installation cavity. The motor cover 46 and the lower housing 45 jointly define a fourth pipeline 322. The top end of the motor cover 46 is provided with a motor air inlet, and the upper housing 44 or the lower housing 45 is provided with a cooling air inlet. Under the action of the suction motor 3, the external cooling air flow enters the interior of the body 4 from the cooling air inlet of the body 4, and the cooling air flow enters the interior of the motor from the motor air inlet to cool the internal structure of the motor, and then flows out from the motor air outlet. The flowing out cooling air flow flows along the fourth pipeline 322 to the second air outlet 43 and is discharged into the storage space 41 through the second air outlet 43. After the suction air flow generated by the suction motor 3 carries dirt and enters the first pipeline 311 from the cleaning head 6, the fluid undergoes gas-liquid separation in the recovery box 1. The air flow after gas-liquid separation flows through the impeller of the suction motor 3 and then enters the second pipeline 312, and then is discharged into the storage space 41 from the first air outlet 42.

[0028] ReferenceFigure 9 , to balance the overall weight, along the length direction of the wet cleaning device 100, the recycling box 1 is arranged between the cleaning liquid tank 2 and the suction motor 3. At the same time, this design can also make the pipeline more concise and the cost lower.

[0029] The recycling box 1 in an embodiment is introduced in detail below. The recycling box 1 can be applied to floor sweeping robots, vertical, handheld or horizontal wet cleaning devices. Refer to Figures 10 - 20 , the figure discloses a recycling box 1, which includes a first box body 12 and a first cover body 14. The first box body 12 defines a first space 11 that can accommodate dirt, and the first box body 12 defines a first opening 13. The first cover body 14 is movably (pivotally or detachably, etc.) installed at the first opening 13 to close / open the first opening 13. The user can empty the dirt in the first space 11 through the first opening 13, and at the same time, the first space 11 can be cleaned through the first opening 13. The first box body 12 further includes a riser pipe 15. The riser pipe 15 includes a liquid inlet 151, a liquid outlet 152, and a liquid inlet channel 153 located between the liquid inlet 151 and the liquid outlet 152. The fluid carrying dirt flows through the liquid inlet 151, the liquid inlet channel 153, and the liquid outlet 152 in sequence under the action of the suction air flow generated by the suction motor 3, and then flows out from the liquid outlet 152 into the first space 11. The recycling box 1 further includes a gas-liquid separator 16 near the liquid outlet 152 for performing gas-liquid separation on the fluid flowing out from the liquid outlet 152. The separated dirt is stored in the accommodation space 47, and the air flow after separation flows out of the recycling box 1. To guide the air flow out of the recycling box 1, the first box body 12 further includes an air outlet pipe 17, and the air outlet pipe 17 is in fluid communication with the suction motor 3. The air outlet pipe 17 includes a first part 171 located in the first box body 12 and a second part 172 located in the first cover body 14 (refer to Figure 15 and 17 ), the first part 171 and the second part 172 jointly define an air inlet 173 of the air outlet pipe 17. The air outlet pipe 17 further includes an air outlet 174 and an air outlet channel 175 located between the air inlet 173 and the air outlet 174. When the liquid level in the recycling box 1 reaches the warning line, the use of the recycling box 1 needs to be restricted. At this time, a float 18 is arranged in the recycling box 1. Refer to Figure 13 , 14 , 16-18, the float 18 is movably arranged at the air outlet pipe 17. When the liquid level in the first space 11 reaches a preset value, the float 18 can move with the liquid level to the air inlet 173 and close at least part of the air inlet 173. At this time, the air flow is cut off and will not flow through the recycling box 1, and the dirt will not be sucked into the recycling box 1. In a specific embodiment, the riser pipe 15 is inclined with respect to the central axis X of the suction motor 3 (refer to Figure 9 ).

[0030] Refer toFigures 15 - 20 When emptying the recycling bin 1, if the drainage path of the sewage passes through the air inlet 173, then sewage may enter the air inlet 173 during the process of emptying the sewage, and then leak to the ground or other places through the air outlet channel 175 (refer to Figure 19 ). Therefore, in the solution disclosed herein, the air inlet 173 is jointly defined by the air outlet pipe 17 and the first cover 14. At this time, when emptying the sewage, the drainage path of the sewage does not flow through the air inlet 173, which can effectively prevent sewage from entering the air outlet channel 175 (refer to Figure 20 ). To further ensure that sewage does not enter the air outlet channel 175, the upper edge of the first pipe body 179 is not lower than the upper edge of the first box body 12.

[0031] Refer to Figures 15 - 19 The first part 171 includes a first pipe body 179 integrally formed with the first box body 12. The second part 172 includes a second baffle 178 extending from the inner wall 141 of the first cover 14. The second baffle 178 and the first pipe body 179 jointly define the air inlet 173. To improve the sealing performance, a sealing structure (not shown in the figure) is provided between the first pipe body 179 and the second baffle 178, and the sealing structure is configured to prevent air flow from passing through the place where the first pipe body 179 and the second baffle 178 contact.

[0032] Continue to refer to Figure 13 and 14 The air outlet channel 175 includes a first channel 176 and a second channel 177 located downstream of the first channel 176, and there is an angle between the first channel 176 and the second channel 177. The first channel 176 is substantially parallel to the riser pipe 15. The second channel 177 is substantially vertically arranged on the surface to be cleaned. To effectively reduce costs, the outer wall of the air outlet pipe 17 forms a part of the outer wall of the first box body 12.

[0033] Refer to Figures 10 - 12 To improve the separation efficiency, the recycling bin 1 further includes a gas-liquid separator 16 near the liquid outlet 152, which is used for gas-liquid separation of the fluid flowing out of the liquid outlet 152. Among them, to make it more convenient to clean the inside of the recycling bin 1 and the gas-liquid separator 16, and at the same time to reduce costs, the gas-liquid separator 16 is arranged on the inner wall 141 of the first cover 14 and can move together with the first cover 14. The gas-liquid separator 16 is detachably installed on the first cover 14, and the gas-liquid separator 16 can also be integrally formed with the first cover 14.

[0034] Continue to refer to Figures 10 - 12, the gas-liquid separator 16 includes a first baffle 162. The first baffle 162 and the inner wall 141 of a part of the first cover 14 jointly define a fifth space, and the liquid outlet 152 is located within the fifth space. The first baffle 162 is semi-circular and the first baffle 162 extends circumferentially along the entire circumference of the riser 15. This arrangement can effectively utilize the space because the higher the gas-liquid separator 16 is arranged from the liquid level, the smaller the force exerted by the airflow on the liquid in the first space 11 (if the airflow is too large, the airflow will blow some liquid away, and this part of the liquid will be sucked away by the suction motor 3, affecting the operation of the motor), and the higher the gas-liquid separation efficiency. At the same time, this design can effectively reduce costs.

[0035] Continue to refer to Figures 10 - 12 , to further improve the separation efficiency, the first baffle 162 includes a plurality of flappers 163 extending in a direction away from the inner wall 141, and the plurality of flappers 163 are arranged at intervals in the circumferential direction of the riser 15. The liquid gradually accumulates at the flappers 163, condenses into water droplets and drips. The water droplets are not easily carried by the airflow and directly fall into the first space 11, while the separated gas flows through the gaps between the flappers 163 towards the air inlet 173. At least a part of the first baffle 162 is located at a position between the liquid outlet 152 and the air inlet 173. The lowermost end of the first baffle 162 in the vertical direction is lower than the lowermost end of the air inlet 173. In a specific embodiment, the projection of the air inlet 173 in the horizontal direction completely falls on the first baffle 162 (refer to Figure 14 ). At this time, the airflow first flows downward at the gas-liquid separator 16 during the flow process, and then turns upward towards the air inlet 173. In this way, the airflow cannot directly flow towards the air inlet 173, and the gas-liquid separation efficiency can be improved.

[0036] In one embodiment, the recovery box 1 includes a first box body 12 and a first cover 14. The cleaning liquid box 2 includes a second box body 24 and a second cover 23. To facilitate the cleaning of the recovery box 1 and add cleaning liquid to the cleaning liquid box 2 at the same time, the cleaning liquid box 2 and the recovery box 1 can be integrally formed into a liquid storage box 101. In this way, after cleaning the recovery box 1, the cleaning liquid can be directly filled. The structural design of the recovery box 1 in the liquid storage box 101 can adopt the structure in the above-mentioned embodiment, which will not be elaborated here.

[0037] Refer to Figures 10 - 20, the liquid storage tank 101 includes a first space 11 for containing dirt and a second space 21 for containing cleaning liquid. The liquid storage tank 101 includes a box body 102 and a cover body 103. The box body 102 is integrally formed by a first box body 12 and a second box body 24. The cover body 104 can be integrally formed by a first cover body 14 and a second cover body 23. The box body defines an opening, and the opening includes a first opening 13 communicating with the first space 11 and a second opening 22 communicating with the second space 21. The cover body is movably installed on the opening to close / open the first opening 13 and the second opening 22. The box body further includes a riser pipe 15, and the riser pipe 15 includes a liquid inlet 151, a liquid outlet 152, and a liquid inlet channel 153 located between the liquid inlet 151 and the liquid outlet 152. The fluid flows out from the liquid outlet 152 and then enters the accommodation space 47. The liquid storage tank 101 includes a gas-liquid separator 16 near the liquid outlet 152 for separating gas and liquid from the fluid flowing out from the liquid outlet 152. Among them, the gas-liquid separator 16 is arranged on the inner wall 141 of the cover body and can move together with the cover body.

[0038] Continue to refer to Figures 10 - 20 , the box body 102 includes an outer shell and a first partition plate 104 for dividing the outer shell into a first space 11 and a second space 21 (refer to Figure 15 ), among which, the first partition plate 104 and the pipe body part of the riser pipe 15 overlap. The liquid storage tank 101 further includes an air outlet pipe 17, and the air outlet pipe 17 includes an air inlet 173, an air outlet 174, and an air outlet channel 175 located between the air inlet 173 and the air outlet 174. Among them, the outer shell and the pipe body part of the air outlet pipe 17 overlap. A upper baffle 25 is arranged at the second opening 22, and a liquid injection port 26 is arranged at a position on the upper baffle 25 close to the handle 121. When the user cleans the liquid storage tank 101, especially when emptying the dirt in the recycling box 1, the upper baffle 25 can block part of the liquid from flowing out of the cleaning liquid tank 2. The user can add cleaning liquid into the second space 21 through the liquid injection port 26. A second partition plate corresponding to the first partition plate 104 is arranged on the cover body, and the second partition plate divides the space defined by the cover body into a third space 161 and a fourth space (refer to Figure 12 ). The liquid storage tank 101 further includes a gas-liquid separator 16, and the gas-liquid separator 16 is arranged in the third space 161 and the gas-liquid separator 16 is integrally formed with the cover body. For the convenience of taking and placing, the box body further defines a handle 121, and the second space 21 is located between the first space 11 and the handle 121. The riser pipe 15 is located at a position between the handle 121 and the air outlet pipe.

[0039] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A recycling bin, characterized in that, Comprising: A first box body, which defines a first space for accommodating dirt, and the first box body defines a first opening, A first cover body, which is movably installed at the first opening to close / open the first opening; The first box body further includes a riser pipe, the riser pipe includes a liquid inlet, a liquid outlet, and a liquid inlet passage located between the liquid inlet and the liquid outlet, and the fluid flows into the first space after flowing out from the liquid outlet; The first box body further includes an air outlet pipe, the air outlet pipe includes a first part located in the first box body and a second part located in the first cover body, and the first part and the second part jointly define an air inlet of the air outlet pipe; the air outlet pipe further includes an air outlet and an air outlet passage located between the air inlet and the air outlet; A float, which is movably arranged at the air outlet pipe. When the liquid level in the first space reaches a preset value, the float can move with the liquid level to the air inlet and close at least part of the air inlet.

2. The recycling box according to claim 1, wherein The first part includes a first pipe body integrally formed with the first box body; the second part includes a second baffle extending from the inner wall of the first cover body; the second baffle and the first pipe body jointly define the air inlet.

3. The recycling box according to claim 1, wherein A sealing structure is arranged between the first pipe body and the second baffle, and the sealing structure is configured to prevent air flow from passing through the place where the first pipe body and the second baffle contact.

4. The recycling box according to claim 1, wherein The upper edge of the first pipe body is not lower than the upper edge of the first box body.

5. The recycling box according to claim 1, wherein The air outlet passage includes a first passage and a second passage located downstream of the first passage, and a certain angle is formed between the first passage and the second passage.

6. The recycling box according to claim 5, wherein The first passage is substantially parallel to the riser pipe; the second passage is substantially perpendicular to the surface to be cleaned.

7. The recycling box according to claim 1, wherein The outer wall of the air outlet pipe forms a part of the outer wall of the first box body.

8. The recycling box according to claim 5, wherein A gas-liquid separator near the liquid outlet, which is used for gas-liquid separation of the fluid flowing out from the liquid outlet, wherein the gas-liquid separator is arranged on the inner wall of the first cover body and can move together with the first cover body.

9. The recycling box according to claim 8, wherein The gas-liquid separator is integrally formed with the first cover body.

10. A wet cleaning device, characterized in that, It includes A machine body, which includes a suction motor for generating a suction air flow; and The recycling box according to any one of claims 1-9, and the recycling box is detachably installed on the machine body.

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