Surface cleaning system

Abstract

The invention discloses a surface cleaning system, and belongs to the technical field of cleaning appliances, the surface cleaning system comprises a sewage suction port and a sewage cavity communicated with the sewage suction port, the sewage cavity is communicated with the sewage suction port through a sewage suction channel to store sewage sucked from the sewage suction port, the sewage cavity discharges the sewage through a sewage discharge channel, and the sewage discharge channel is further provided with a power cavity and a switching device. The surface cleaning system comprises a power cavity, a sewage cavity and a switching device, the switching device acts to enable the power cavity and the sewage cavity to have a communicated sewage suction state and a separated isolation state, and the surface cleaning system further comprises a pressure reducing device. And when the power cavity is switched to the sewage suction state, sewage in the sewage cavity is sucked into the power cavity through the pressure difference and then is discharged. In the sewage discharging process, sewage is rapidly discharged from the sewage cavity under the pressure difference effect of the power cavity and the sewage cavity, the pressure effect borne by the sewage cavity is small, deformation caused by the high pressure effect is avoided, and the possibility of water leakage and gas leakage of the sewage cavity is reduced.

Description

Technical Field

[0001] This application belongs to the field of cleaning appliance technology, and specifically relates to a surface cleaning system. Background Technology

[0002] Current surface cleaning systems, such as vacuum cleaners and floor scrubbers, draw up wastewater through suction ports and pump it into a wastewater chamber during cleaning. After cleaning, the wastewater needs to be drained from the chamber. However, since the wastewater contains hair, debris, and other contaminants, relying solely on gravity results in slow drainage and potential blockage of the wastewater chamber. Consequently, some contaminants may remain in the wastewater chamber after it has been drained, leading to ineffective wastewater cleaning. Therefore, auxiliary drainage methods are necessary.

[0003] Existing technologies use pressurization of the sewage chamber to assist in sewage discharge. After cleaning, the sewage chamber is pressurized, allowing it to drain quickly under higher pressure to prevent hair, debris, and other contaminants from clogging it. However, pressurization can only be done after cleaning is complete, and the pressurization process is lengthy, resulting in prolonged sewage discharge. This leads to a poor user experience for users with continuous cleaning needs. Summary of the Invention

[0004] This application provides a surface cleaning system to solve the technical problems of long sewage discharge time and easy leakage of sewage chamber in existing surface cleaning systems.

[0005] The technical solution adopted in this application is as follows:

[0006] A surface cleaning system includes a suction port and a wastewater chamber communicating with the suction port. The wastewater chamber is connected to the suction port via a suction channel to store wastewater sucked in from the suction port. The wastewater chamber discharges wastewater through a discharge channel. The discharge channel is also provided with a power chamber and a switching device. The switching device is activated to allow the power chamber and the wastewater chamber to have a connected suction state and a separated isolation state. The surface cleaning system also includes a pressure reducing device that can reduce the pressure of the power chamber in the isolated state, so that when the power chamber switches to the suction state, the wastewater in the wastewater chamber is sucked into the power chamber and discharged through the pressure difference.

[0007] The surface cleaning system described in this application also includes the following additional technical features:

[0008] The volume ratio of the power chamber to the sewage chamber is α, where 0.2 ≤ α ≤ 0.7.

[0009] The switching device includes a first valve body and a second valve body. The power chamber has a drain port, and the first valve body is located at the drain port. The second valve body is located between the power chamber and the sewage chamber. When the power chamber is in the suction state, the second valve body opens before or simultaneously with the first valve body.

[0010] The switching device also includes a third valve body, which is located between the power chamber and the pressure reducing device. When the power chamber is in the suction state, the third valve body is closed.

[0011] The surface cleaning system includes a surface cleaning device and a base station. The suction port and the wastewater chamber are disposed in the surface cleaning device, and the power chamber is disposed in the base station. The pressure reducing device includes a first suction device disposed in the base station, which is used to suction air from the power chamber to reduce the air pressure in the power chamber. The surface cleaning device is provided with a second suction device for sucking wastewater from the suction port into the wastewater chamber. When the surface cleaning device is connected to the base station, the wastewater chamber is located above the power chamber.

[0012] The pressure reduction device includes a vacuum generator, which is connected to either the sewage chamber or the power chamber via a switching valve.

[0013] The top of the power chamber has a connecting port, through which the power chamber is connected to the vacuum generator.

[0014] The surface cleaning system includes a body, and the sewage chamber, the pressure reducing device, and the power chamber are all located inside the body. The power chamber is lower than the sewage chamber in vertical height.

[0015] The surface cleaning system also includes a drain pipe that communicates with the power chamber. One end of the drain pipe is connected to the power chamber, and the other end passes through the body and extends to the outside of the body.

[0016] The bottom of the machine body has a sewage outlet that communicates with the power chamber, through which the power chamber discharges sewage to the outside of the machine body.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. The surface cleaning system of this application includes a sewage chamber and a power chamber. A pressure-reducing device depressurizes the power chamber. After cleaning, the pressure difference between the power chamber and the sewage chamber allows for the rapid removal of sewage from the sewage chamber, reducing the possibility of hair and other debris clogging the sewage chamber during the discharge process. Furthermore, due to the presence of a switching device, the power chamber is switched to an isolated state during surface cleaning. The power chamber can be depressurized first under the action of the pressure-reducing device, meaning the depressurization of the power chamber can be synchronized with the surface cleaning process, eliminating the need to wait for the power chamber to depressurize after cleaning. This significantly reduces the sewage discharge time and enables rapid removal of sewage from the sewage chamber. For users with continuous operation needs, such as those with large surfaces to be cleaned and limited sewage chamber volume requiring multiple discharges, this system greatly reduces waiting time, improves the continuity of cleaning work, and significantly enhances the user experience.

[0019] 2. As a preferred embodiment of this application, the volume ratio α of the power chamber to the sewage chamber is set to 0.2≤α≤0.7. This ratio α is between 0.2 and 0.7, including the endpoints of 0.2 and 0.7. This range ensures that the power chamber has sufficient space to accommodate the sewage being sucked up, guaranteeing that the sewage being sucked up by the power chamber has sufficient temporary storage space. Moreover, within this ratio range, the pressure reduction device exerts a smaller pressure reduction on the power chamber, enabling a faster reduction of the air pressure inside the power chamber. This reduces the power requirement of the pressure reduction device and shortens the pressure reduction time of the pressure reduction device on the power chamber, ensuring that the air pressure inside the power chamber is sufficient to suck up the sewage in the sewage chamber before the cleaning work is completed, thus avoiding waiting for the user.

[0020] 3. In a preferred embodiment of this application, the switching device is configured to include a first valve body and a second valve body. By controlling the first valve body to cut off the drain port and controlling the second valve body to cut off the connection between the power chamber and the sewage chamber, the power chamber is isolated. At this time, the connection between the power chamber and the outside is cut off, avoiding the pressure leakage phenomenon caused by insufficient sealing of the power chamber when the pressure reducing device reduces the pressure of the power chamber, thus providing a stable guarantee for the pressure reduction of the power chamber by the pressure reducing device. Furthermore, a drain port is provided on the power chamber, and the first valve body is used to open or close the drain port, providing a discharge channel for the sewage temporarily stored in the power chamber, reducing the difficulty of sewage treatment in the power chamber for the user, and reducing the user's cleaning pressure. When the power chamber is in the suction state, setting the second valve body to open before the first valve body can better maintain the pressure difference between the power chamber and the sewage chamber in the suction state. This allows sewage in the sewage chamber to flow continuously into the power chamber under the action of pressure difference before the first valve body opens, further increasing the sewage discharge rate while reducing the probability of sewage blockage in the sewage chamber. Setting the first valve body to open simultaneously with the second valve body allows sewage to be quickly discharged from the power chamber through the sewage outlet after being sucked into the power chamber. This prevents sewage from accumulating in the power chamber in large quantities, thus avoiding the phenomenon that the power chamber is filled with sewage due to the sewage rushing into the power chamber too quickly, which would prevent the power chamber from effectively providing suction to the sewage chamber.

[0021] Preferably, a third valve body is provided between the power chamber and the pressure reducing device. When the power chamber switches to the suction state, the third valve body is closed to cut off the connection channel between the pressure reducing device and the power chamber, so as to prevent sewage flowing from the sewage chamber into the power chamber from entering the pressure reducing device through the connection channel between the pressure reducing device and the power chamber, thereby avoiding the sewage from interfering with the pressure reducing device and ensuring the working stability of the pressure reducing device.

[0022] 4. In a preferred embodiment of this application, the surface cleaning system is configured to include a surface cleaning device and a base station, with the power chamber and the first suction device located at the base station. This simplifies the structural design of the surface cleaning device, allowing users to more easily control it to clean the surface. After cleaning, placing the surface cleaning device at the base station switches the power chamber from a self-isolation state to a suction state, enabling rapid drainage of the wastewater chamber. Furthermore, since the base station is fixed in a specific location, the drain outlet of the power chamber can be connected to a sewer or other wastewater discharge system. With the sewage chamber positioned relative to the power chamber, the sewage drawn into the power chamber is directly discharged to the sewer or other discharge points through the drain outlet during sewage discharge, which helps reduce the user's pressure on the sewage treatment in the power chamber. Furthermore, by placing the sewage chamber above the power chamber, when the power chamber switches to the suction mode, the sewage in the sewage chamber can flow into the power chamber under the combined action of pressure difference and its own gravity, which helps increase the discharge rate of sewage from the sewage chamber to the power chamber, further improving the suction speed of the power chamber on the sewage chamber. At the same time, it enhances the flushing force of dirt such as hair and debris in the sewage, further reducing the probability of dirt clogging the sewage chamber.

[0023] 5. As a preferred embodiment of this application, by setting up a vacuum generator and connecting it to either the sewage chamber or the power chamber via a switching valve, when the vacuum generator is connected to the sewage chamber, a pressure difference is created between the sewage chamber and the suction port by drawing a vacuum into the sewage chamber, thereby sucking up the sewage at the suction port through the pressure difference. When the vacuum generator is connected to the power chamber, the power chamber is depressurized by drawing a vacuum into the power chamber. That is, by setting up a vacuum generator and a switching valve, the vacuum generator, in addition to having the function of depressurizing the power chamber, further integrates the function of depressurizing the sewage chamber to realize the function of sewage flowing from the sewage port into the sewage chamber. The functions are further integrated, and the structural design of the surface cleaning system is optimized.

[0024] 6. In a preferred embodiment of this application, the sewage chamber, pressure reducing device, and power chamber are all located inside the body of the surface cleaning system, realizing an integrated design of the surface cleaning system. This facilitates meeting different placement needs of users and allows the surface cleaning system to be placed in different positions according to user requirements, improving the user experience. At the same time, the power chamber is lower than the sewage chamber. During the process of sewage flowing from the sewage chamber to the power chamber under the action of pressure difference, the sewage's own gravity assists the sewage to move quickly to the power chamber, which helps to increase the suction speed of the power chamber to the sewage chamber. It also enhances the flushing force of hair, debris, and other dirt in the sewage, further reducing the probability of dirt clogging the sewage chamber.

[0025] Preferably, by setting up a drain pipe connected to the power chamber, after the cleaning work is completed, the drain pipe can be connected to the sewer pipe or sewage storage tank, etc., so that the sewage in the power chamber can be discharged, saving the user from opening the machine to clean the sewage in the power chamber and improving the user experience.

[0026] Preferably, a drain outlet is provided at the bottom of the machine body. After the cleaning work is completed, the machine body is moved to a position where the drain outlet is aligned with the drain pipe, so that the sewage in the power chamber can be discharged out of the power chamber, reducing the cleaning pressure on the user and improving the user experience. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the surface cleaning system in one embodiment of Example 1. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the surface cleaning system in one embodiment of Example 1. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the surface cleaning system in one embodiment of Example 1. Figure 3 ;

[0031] Figure 4 This is a schematic diagram of the surface cleaning system in one embodiment of Example 2. Figure 4 ;

[0032] Figure 5 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 1 And some enlarged images;

[0033] Figure 6 This is a schematic diagram of a portion of the surface cleaning system in one embodiment of Example 3. Figure 1 ;

[0034] Figure 7 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 2 ;

[0035] Figure 8 This is a schematic diagram of a portion of the surface cleaning system in one embodiment of Example 3. Figure 2 ;

[0036] Figure 9This is a schematic diagram of a portion of the surface cleaning system in one embodiment of Example 3. Figure 3 ;

[0037] Figure 10 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 3 ;

[0038] Figure 11 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 4 ;

[0039] Figure 12 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 5 ;

[0040] Figure 13 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 6 ;

[0041] Figure 14 This is a schematic diagram of the surface cleaning system in one embodiment of Example 3. Figure 7 ;

[0042] Figure 15 This is a schematic diagram of the surface cleaning system in one embodiment of Example 4;

[0043] Figure 16 This is a schematic diagram of a portion of the surface cleaning system in one embodiment of Example 4;

[0044] Figure 17 This is a schematic diagram of the surface cleaning system according to one embodiment of Example 5;

[0045] Figure 18 This is a cross-sectional view of a surface cleaning system with a rotating component according to one embodiment of Example 6. Figure 1 ;

[0046] Figure 19 for Figure 18 Enlarged view of part A;

[0047] Figure 20 This is a cross-sectional view of a surface cleaning system with a rotating component according to one embodiment of Example 6. Figure 2 ;

[0048] Figure 21 for Figure 20 Enlarged view of part B;

[0049] Figure 22 This is a schematic diagram of the rotating assembly and liquid dispensing component in one embodiment of Example 6;

[0050] Figure 23 This is a schematic diagram of the rotating component in one embodiment of Example 6;

[0051] Figure 24 for Figure 23 Enlarged view of part C;

[0052] Figure 25 This is a detailed view of a surface cleaning system with a rotating component according to one embodiment of Example 6.

[0053] in:

[0054] 1. Suction port; 2. Sewage chamber; 3. Power chamber; 4. First valve body; 5. Second valve body; 6. Third valve body; 7. Sewage outlet; 8. Surface cleaning device; 81. Second channel; 82. First air vent; 9. Base station; 91. Sewage discharge port; 92. Second air vent; 10. First suction device; 11. Second suction device; 12. Vacuum generator; 13. Switching valve; 14. Connecting port; 15. Body; 16. Sewage pipe; 17. Sewage outlet; 18. Suction channel; 19. Placement slot; 20. Handle; 31. Body; 311. Air outlet; 312. Handle; 32. Floor brush; 321. Suction port; 33. Suction device; 331. Exhaust port; 34. Sewage tank; 341. First chamber; 342. Second chamber; 3421. Air inlet; 3422. Vent hole; 35. Air inlet pipe; 351. First port; 352. Second port; 353. First section; 35 4. Second section; 36. Venturi valve, 361. Air inlet, 362. Air outlet, 363. Sewage inlet, 364. Airflow convergence section, 3641. Air outlet, 365. Output section, 366. Negative pressure zone; 37. Exhaust pipe; 38. Air supply device; 39. Connecting port; 310. Sewage inlet pipe; 41. Floor brush housing, 411. Lower seal, 412. Fourth arc-shaped surface, 413. Second positioning protrusion, 414. Sewage suction channel; 42. Cleaning component; 43. Rotating assembly, 431. Scraper component, 4311. Scraper blade, 4312. First comb tooth, 4313. Second comb tooth, 432. Rotating part, 4321. First arc-shaped surface, 4322. Third arc-shaped surface, 433. Upper seal, 434. Driven gear, 435. First positioning protrusion; 44. Liquid distribution component, 441. Second arc-shaped surface, 442. Spray nozzle; 45. Sewage suction port; 46. Flexible scraper blade. Detailed Implementation

[0055] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0056] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0057] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0060] Surface cleaning systems for cleaning surfaces include handheld cleaning machines such as floor scrubbers and vacuum cleaners, and self-propelled cleaning machines such as robotic vacuum cleaners and mopping robots. The following explanation uses a floor scrubber as an example to illustrate this solution. Those skilled in the art will understand that this solution can also be applied to any of the aforementioned cleaning machines used for cleaning surfaces.

[0061] This invention provides a surface cleaning system, including a suction port and a wastewater chamber communicating with the suction port. The wastewater chamber is connected to the suction port via a suction channel to store wastewater sucked in from the suction port. The wastewater chamber discharges wastewater through a discharge channel. The discharge channel is also provided with a power chamber and a switching device. The switching device is activated to allow the power chamber and the wastewater chamber to have a connected suction state and a separated isolation state. The surface cleaning system also includes a pressure reducing device, which can reduce the pressure of the power chamber in the isolated state so that when the power chamber switches to the suction state, the wastewater in the wastewater chamber is sucked into the power chamber and discharged after discharge through the pressure difference. This surface cleaning system includes a wastewater chamber and a power chamber. A pressure-reducing device depressurizes the power chamber. After cleaning, the pressure difference between the power chamber and the wastewater chamber allows for the rapid removal of wastewater, reducing the possibility of hair and other debris clogging the wastewater chamber during the discharge process. Furthermore, a switching device isolates the power chamber during surface cleaning, allowing it to depressurize simultaneously with the surface cleaning process. This eliminates the need to wait for depressurization after cleaning, significantly reducing wastewater discharge time and enabling rapid drainage. For users with continuous cleaning needs, such as those with large surfaces requiring multiple discharges due to limited wastewater chamber volume, this system greatly reduces waiting time, improves cleaning continuity, and significantly enhances the user experience.

[0062] Example 1:

[0063] In this embodiment, as Figure 1 As shown, the surface cleaning system includes a suction port 1 and a wastewater chamber 2 connected to the suction port 1. The wastewater chamber 2 is connected to the suction port 1 through a suction channel 18 to store wastewater sucked in from the suction port 1. The wastewater chamber 2 discharges wastewater through a discharge channel. The discharge channel is also equipped with a power chamber 3 and a switching device. The switching device is activated to enable the power chamber 3 and the wastewater chamber 2 to have a connected suction state and a separated isolation state. The surface cleaning system also includes a pressure reducing device, which can reduce the pressure of the power chamber 3 in the isolated state so that when the power chamber 3 switches to the suction state, the wastewater in the wastewater chamber 2 is sucked into the power chamber 3 and discharged afterward through the pressure difference.

[0064] Traditional surface cleaning systems typically use pressurization to quickly drain wastewater after cleaning. However, the wastewater chamber undergoes a slow pressurization process during drainage, resulting in a prolonged drainage time. Consequently, this method places high demands on the structural strength of the wastewater chamber, requiring the use of high-strength materials to prevent deformation under pressure. This increases manufacturing costs, and the chamber inevitably deforms under prolonged high pressure, posing a risk of water and air leakage during long-term use.

[0065] The surface cleaning system in this embodiment 1 includes a wastewater chamber 2 and a power chamber 3. A pressure-reducing device depressurizes the power chamber 3. After the cleaning operation is completed, the pressure difference between the power chamber 3 and the wastewater chamber 2 is used to extract the wastewater from the wastewater chamber 2, thereby achieving rapid discharge of the wastewater from the wastewater chamber 2 and reducing the possibility of hair and other debris clogging the wastewater chamber 2 during the discharge process. Furthermore, due to the presence of a switching device, when the surface cleaning system is performing cleaning operations, the switching device switches the power chamber 3 to an isolated state. The power chamber 3 can be depressurized first under the action of the pressure-reducing device, meaning that the depressurization of the power chamber 3 can be carried out simultaneously with the surface cleaning system, without having to wait for the power chamber 3 to depressurize after the cleaning operation is completed. In this way, when the cleaning operation is finished... There is a certain pressure difference between the power chamber and the sewage chamber. At this time, the switching device switches the power chamber to the sewage suction state. The sewage in the sewage chamber can quickly flow into the power chamber under the action of the pressure difference between the sewage chamber and the power chamber. That is, compared with the sewage discharge method of pressurizing the sewage chamber in the prior art, the sewage suction method of setting the power chamber in this embodiment 1 does not require depressurization and suction after the cleaning work is completed, which greatly reduces the sewage discharge time of sewage chamber 2 and can quickly realize the discharge of sewage in sewage chamber 2. For some users with continuous operation needs, such as a large surface area to be cleaned, which is limited by the volume of sewage chamber 2 and requires multiple sewage discharges, the waiting time of such users is greatly reduced, which helps to improve the continuity of cleaning work and greatly improves the user experience.

[0066] Figure 1 and Figure 2 The diagram illustrates the flow path of the sewage, with the dotted line indicated by arrow X representing the sewage flow path.

[0067] In this embodiment 1, the size relationship between the power chamber 3 and the sewage chamber 2 is not limited. In the first embodiment, such as... Figure 1As shown, the volume ratio of the power chamber 3 to the sewage chamber 2 is α, where 0.2 ≤ α ≤ 0.7. Setting the volume ratio α of the power chamber 3 to the sewage chamber 2 to 0.2 ≤ α ≤ 0.7, this ratio α falls between 0.2 and 0.7, including the endpoints of 0.2 and 0.7. This range ensures that the power chamber 3 has sufficient space to accommodate the sewage being pumped, guaranteeing that the sewage pumped by the power chamber 3 has enough temporary storage space. Furthermore, within this ratio range, the pressure reduction device exerts a smaller pressure reduction on the power chamber 3, enabling a faster reduction of the air pressure within the power chamber 3. This reduces the power reduction requirement of the pressure reduction device and shortens the pressure reduction time of the power chamber 3, ensuring that the air pressure within the power chamber 3 is sufficient to pump the sewage from the sewage chamber 2 before the cleaning work is completed, thus avoiding waiting for the user.

[0068] In the second embodiment, the volume of the power chamber 3 is larger than the volume of the sewage chamber 2. Setting the volume of the power chamber 3 to be larger than the volume of the sewage chamber 2 allows the power chamber 3 to perform multiple sewage extractions from the sewage chamber 2. When the surface area to be cleaned is large, or when the surface requires multiple cleaning operations necessitating multiple continuous operations of the surface cleaning system, the larger-volume power chamber 3 is used to repeatedly extract the sewage from the sewage chamber 2, and then the sewage in the power chamber 3 is uniformly discharged and cleaned. Preferably, in this embodiment, the ratio β of the volume of the power chamber 3 to the volume of the sewage chamber 2 is ≥ 2.

[0069] As a preferred embodiment of this Example 1, such as Figure 2 As shown, the switching device includes a first valve body 4 and a second valve body 5. The power chamber 3 has a drain port 7, and the first valve body 4 is located at the drain port 7. The second valve body 5 is located between the power chamber 3 and the sewage chamber 2. When the power chamber 3 is in the suction state, the second valve body 5 opens before or simultaneously with the first valve body 4.

[0070] The switching device is configured to include a first valve body 4 and a second valve body 5. By controlling the first valve body 4 to cut off the drain port 7 and controlling the second valve body 5 to cut off the connection between the power chamber 3 and the sewage chamber 2, the power chamber 3 is isolated. At this time, the connection between the power chamber 3 and the outside world is cut off, avoiding the pressure leakage phenomenon caused by insufficient sealing of the power chamber 3 when the pressure reducing device reduces the pressure of the power chamber 3, thus providing a stable guarantee for the pressure reduction of the power chamber 3 by the pressure reducing device. The drain port 7 is set on the power chamber 3 and the first valve body 4 is used to open or close the drain port 7, providing a discharge channel for the sewage temporarily stored in the power chamber 3, reducing the difficulty of sewage treatment in the power chamber 3 for users and reducing the cleaning pressure for users. In addition, when the power chamber 3 is in In the suction state, setting the second valve body 5 to open before the first valve body 4 can better maintain the pressure difference between the power chamber 3 and the sewage chamber 2 in the suction state. This allows the sewage in the sewage chamber 2 to flow continuously into the power chamber 3 under the action of the pressure difference before the first valve body 4 opens, further increasing the sewage discharge rate while reducing the probability of sewage blockage in the sewage chamber 2. Setting the first valve body 4 to open simultaneously with the second valve body 5 allows the sewage to be quickly discharged from the power chamber 3 through the sewage outlet 7 after being sucked into the power chamber 3. This prevents the sewage from accumulating in the power chamber 3 in large quantities, thus avoiding the phenomenon that the power chamber 3 is filled with sewage due to the sewage rushing into the power chamber 3 too quickly, which would prevent the power chamber 3 from being unable to effectively provide suction to the sewage chamber 2.

[0071] Preferably, such as Figure 2 As shown, the drain outlet 7 is located at the bottom of the power chamber 3. This arrangement ensures that when the power chamber 3 discharges wastewater through the drain outlet 7, the wastewater can flow out of the power chamber 3 under the action of gravity, avoiding the phenomenon that the wastewater cannot be discharged smoothly due to the drain outlet 7 being higher than the highest liquid level of the wastewater.

[0072] As a preferred example of this implementation, such as Figure 2 As shown, the switching device also includes a third valve body 6, which is located between the power chamber 3 and the pressure reducing device. When the power chamber 3 is in the suction state, the third valve body 6 is closed. The third valve body 6, located between the power chamber 3 and the pressure reducing device, closes when the power chamber 3 switches to the suction state to cut off the connection between the pressure reducing device and the power chamber 3. This prevents sewage flowing from the sewage chamber 2 into the power chamber 3 from entering the pressure reducing device through the connection between the two, thus avoiding interference from sewage and ensuring the operational stability of the pressure reducing device.

[0073] As another preferred example of this implementation, such as Figure 2 , Figure 3As shown, the surface cleaning system includes a surface cleaning device 8 and a base station 9. A suction port 1 and a wastewater chamber 2 are disposed on the surface cleaning device 8, and a power chamber 3 is disposed on the base station 9. The pressure reduction device includes a first suction device 10 disposed on the base station 9. The first suction device 10 is used to suction air from the power chamber 3 to reduce the air pressure in the power chamber 3. The surface cleaning device 8 is provided with a second suction device 11 for sucking the wastewater from the suction port 1 into the wastewater chamber 2. When the surface cleaning device 8 is connected to the base station 9, the wastewater chamber 2 is located above the power chamber 3.

[0074] The surface cleaning system is configured to include a surface cleaning device 8 and a base station 9, with the power chamber 3 and the first suction device 10 located in the base station 9. This simplifies the structural design of the surface cleaning device 8, allowing users to more easily control it to clean the surface. Specifically, the surface cleaning device 8 includes a pivotally connected body and a floor brush. A handle 20 is provided on the body, allowing the user to grip the handle 20 to drive the body and floor brush to move synchronously or to rotate the body relative to the floor brush, thus cleaning the surface. After cleaning, the operator lifts the surface cleaning device 8 by pulling the handle 20 and places it into the placement slot 19 of the base station 9. The size and structure of the placement slot 19 are adapted to the floor brush, ensuring stable placement of the surface cleaning device 8 within the base station 9. The base station 9 has a first channel 17 aligned with the power chamber, and the surface cleaning device 8 has a second channel 81 communicating with the wastewater chamber 2. When the floor brush is placed in the placement slot 19, its relative position is locked. Afterwards, the first channel 17 and the second channel 81 are aligned and connected. At this time, the power chamber 3 switches from the isolation state to the sewage suction state, thus realizing the rapid discharge of sewage from the sewage chamber 2. In addition, since the base station 9 is fixedly placed in a certain location, a sewage discharge port 91 connected to the sewage discharge port 7 of the power chamber 3 can be set on the base station. The sewage discharge port 91 is set to be opposite to the sewer or other sewage discharge point. When the sewage chamber 2 is being discharged, the sewage sucked into the power chamber 3 is directly discharged into the sewer or other discharge point through the sewage discharge port 7. The placement of the wastewater chamber 2 above the power chamber 3 helps reduce the pressure on the user to treat the wastewater in the power chamber 3. Furthermore, by positioning the wastewater chamber 2 above the power chamber 3, when the power chamber 3 switches to the suction state, the wastewater in the wastewater chamber 2 can flow into the power chamber 3 under the combined action of pressure difference and its own gravity. This helps increase the discharge rate of wastewater from the wastewater chamber 2 to the power chamber 3, further improving the suction speed of the power chamber 3 on the wastewater chamber 2. At the same time, it enhances the flushing force on hair, debris, and other dirt in the wastewater, further reducing the probability of dirt clogging the wastewater chamber 2.

[0075] As a preferred embodiment of this Example 1, such as Figure 3As shown, the pressure-reducing device includes a vacuum generator 12, which is selectively connected to either the sewage chamber 2 or the power chamber 3 via a switching valve 13. By setting up the vacuum generator 12 and selectively connecting it to either the sewage chamber 2 or the power chamber 3 via the switching valve 13, when the vacuum generator 12 is connected to the sewage chamber 2, a pressure difference is created between the sewage chamber 2 and the suction port 1 by drawing a vacuum into the sewage chamber 2. This pressure difference is then used to draw sewage from the suction port 1. When the vacuum generator 12 is connected to the power chamber 3, a pressure reduction is achieved by drawing a vacuum into the power chamber 3. In other words, by setting up the vacuum generator 12 and the switching valve 13, the vacuum generator 12, in addition to its function of reducing the pressure of the power chamber 3, further integrates the function of reducing the pressure of the sewage chamber 2 to enable sewage to flow from the sewage port into the sewage chamber 2. This further integrates the functions and optimizes the structural design of the surface cleaning system.

[0076] When the surface cleaning system includes a surface cleaning device 8 and a base station 9, such as Figure 3 As shown, the surface cleaning device 8 has a first air vent 82, and the base station 9 has a second air vent 92 that is aligned with the first air vent 82. When the surface cleaning device 8 is fixed to the base station 9, the first air vent 82 and the second air vent 92 are aligned and connected to realize the connection between the vacuum generator 12 and the power chamber 3.

[0077] As a preferred example of this implementation, such as Figure 3 As shown, a connecting port 14 is provided at the top of the power chamber 3, and the power chamber 3 is connected to the vacuum generator 12 through the connecting port 14. Since the sewage entering the power chamber 3 from the sewage chamber 2 will slide down to the bottom of the power chamber 3 under the action of power, setting the connecting port 14 at the top of the power chamber 3 can effectively reduce the probability of sewage flowing back into the vacuum generator 12 through the connecting port 14, and effectively ensure the working stability of the vacuum generator 12.

[0078] Preferably, the vacuum generator 12 can be a blower, which reduces the air pressure in the power chamber 3 or the sewage chamber 2 by drawing air from the power chamber 3 or the sewage chamber 2.

[0079] Example 2:

[0080] This embodiment 2 is basically the same as embodiment 1 in structure and principle, the difference being:

[0081] like Figure 4 As shown, the surface cleaning system includes a body 15, a sewage chamber 2, a pressure reducing device, and a power chamber 3, all of which are located inside the body 15. The power chamber 3 is lower than the sewage chamber 2 in vertical height.

[0082] The wastewater chamber 2, the pressure reducing device, and the power chamber 3 are all located inside the body 15 of the surface cleaning system, realizing an integrated design of the surface cleaning system. This facilitates meeting different placement needs of users and allows the surface cleaning system to be placed in different positions according to user requirements, improving the user experience. At the same time, the power chamber 3 is lower than the wastewater chamber 2. As the wastewater in the wastewater chamber 2 flows into the power chamber 3 under the action of pressure difference, the gravity of the wastewater itself assists the wastewater to move quickly into the power chamber 3, which helps to increase the suction speed of the power chamber 3 on the wastewater chamber 2. It also enhances the flushing force of hair, debris, and other dirt in the wastewater, further reducing the probability of dirt clogging the wastewater chamber 2.

[0083] In this embodiment 2, the power chamber 3 is lower in vertical height than the sewage chamber 2, and can be as follows: Figure 4 The sewage chamber 2 shown is located at the top of the power chamber 3. Alternatively, a portion of the sewage chamber 2 may be higher than the power chamber 3, and the sewage outlet connecting the sewage chamber 2 and the power chamber 3 may be higher than the bottom of the power chamber 3.

[0084] As a preferred embodiment in this Example 2, such as Figure 4 As shown, the surface cleaning system also includes a drain pipe 16 connected to the power chamber 3. One end of the drain pipe 16 is connected to the power chamber 3, and the other end passes through the body 15 and extends to the outside of the body 15. By setting up the drain pipe 16 connected to the power chamber 3, after the cleaning work is completed, the drain pipe 16 can be connected to the drain pipe or sewage storage tank, etc., so that the sewage in the power chamber 3 can be discharged. This saves the user from having to open the body 15 to clean the sewage in the power chamber 3, thus improving the user experience.

[0085] In a preferred embodiment of this second example, the bottom of the body 15 has a drain outlet communicating with the power chamber 3. The power chamber 3 discharges wastewater to the outside of the body 15 through the drain outlet. By providing a drain outlet at the bottom of the body 15, after cleaning is completed, the body 15 can be moved to a position where the drain outlet is aligned with the drain pipe, thereby discharging the wastewater from the power chamber 3. This reduces the cleaning burden on the user and improves the user experience.

[0086] Preferably, the body 15 is provided with a receiving groove for accommodating the sewage chamber 2 and the power chamber 3. The bottom of the receiving groove is provided with a first opening that communicates with the sewage outlet 17 and a second opening that communicates with the sewage suction port 1 and the sewage chamber 2 respectively. The first opening penetrates the body 15 so that the sewage in the power chamber 3 is discharged from the body 15 in sequence through the sewage outlet 17 and the first opening.

[0087] Example 3:

[0088] When performing cleaning work, surface cleaning systems often need to tilt the machine body to allow the floor brush to enter and exit different locations of the surface to be cleaned. For example, for surfaces with limited overhead space such as under sofas and beds, the machine body needs to be tilted downwards, or even rotated to a position almost parallel to the ground, in order for the floor brush to move freely in and out. However, a large tilt of the machine body will cause the sewage in its internal sewage chamber to tilt and shake, which may lead to backflow into the suction device.

[0089] In this embodiment 3, as Figure 5 As shown, the surface cleaning system includes a suction device 33, and a wastewater chamber including a first chamber 341 and a second chamber 342 that are interconnected. The suction device 33 sucks the wastewater into the first chamber 341 through the suction port 321. The second chamber 342 is provided with an air inlet 3421, and the air inlet 3421 is connected to an air inlet pipe 35. The air inlet pipe 35 is connected to the first chamber 341 through a wastewater inlet pipe 310. The air inlet pipe 35 introduces air into the second chamber 342 to generate a Venturi effect in the air inlet pipe 35, thereby driving the wastewater in the first chamber 341 into the second chamber 342.

[0090] Similar to Embodiment 1, in Embodiment 3, the sewage in the first chamber 341 is also drawn in by the second chamber 342, so that most of the sewage drawn into the sewage chamber enters the second chamber 342, thereby reducing the backflow of sewage in the first chamber 341 into the suction device 33 caused by factors such as shaking of the machine body 1. However, unlike Embodiment 1, in this embodiment, the suction device 33 intakes air into the second chamber 342 through the air inlet pipe 35. This allows the venturi effect to carry the waste liquid in the first chamber 341 into the second chamber 342, maintaining the waste liquid content in the first chamber 341 at a low level. The waste liquid entering the first chamber 341 from the suction port 321 is quickly drawn into the second chamber 342 through the waste inlet pipe 310. Therefore, when the machine body 1 rotates significantly or is nearly parallel to the ground, because the wastewater in the first chamber 341 is minimal or even completely drawn into the second chamber 342, the probability of backflow of waste liquid from the first chamber 341 into the suction device 33 due to the tilting and shaking of the machine body 1 is effectively reduced, ensuring the stable operation of the suction device 33. Furthermore, because the air inlet pipe 35... 3421 continuously supplies air into the second chamber 342. When the sewage in the second chamber 342 sloshes due to the tilt of the body 1 and tends to flow backwards into the air intake pipe 35, the airflow in the air intake pipe 35 towards the second chamber 342 will block the sewage from entering the air intake pipe 35, thereby preventing the backflow of sewage in the second chamber 342. In this way, the sewage can be stably stored in the second chamber 342, greatly reducing the probability of water leakage in the cleaning device. Furthermore, since this application uses the air intake pipe 35 to drive the sewage in the first chamber 341 into the second chamber 342, there is no need to set up sewage pipes that are connected to the first chamber 341 and the second chamber 342 respectively. This can occupy less internal space of the body 1, providing more layout space for the other components of the cleaning device and helping to optimize the structural design of the cleaning device.

[0091] In this embodiment 3, the principle by which the second chamber 342 draws the waste liquid from the first chamber 341 through the air inlet pipe 35 and the waste inlet pipe 310 is as follows: Figure 5The diagram schematically illustrates the direction of airflow in the intake pipe 35, the direction of movement of the sludge in the first chamber 341, and the direction of movement of the sludge mixed with the airflow. Arrow a indicates the direction of airflow in the intake pipe 35, arrow b indicates the direction of movement of the sludge in the first chamber 341, and arrow c indicates the direction of movement of the sludge mixed with the airflow. By injecting air into the intake pipe 35, the gas moves rapidly towards the air inlet 3421. The rapidly moving gas reduces the air pressure in the intake pipe 35, creating a pressure difference between the connection between the intake pipe 35 and the sludge inlet pipe 310 and the sludge in the first chamber 341. Under the action of the pressure difference, the sludge moves along the sludge inlet pipe 310 towards the connection between the intake pipe 35 and the sludge inlet pipe 310, and when it comes into contact with the airflow, it is carried by the airflow towards the air inlet 3421, and then injected into the second chamber 342 through the air inlet 3421.

[0092] In a preferred embodiment of this third embodiment, the cleaning device further includes a tilt detection element disposed inside the body 1. This tilt detection element can detect the rotation angle of the body 1 and control the delivery and cessation of airflow in the air intake pipe 35. It can be configured to control the airflow in the air intake pipe 35 to input the wastewater in the first chamber 341 into the second chamber 342 when the tilt detection element detects that the angle between the body 1 and the ground is less than a preset angle. This embodiment does not limit the specific value of the preset angle; it can be 45°, 60°, or other values ​​set according to the structural design of the body 1. Alternatively, it can be configured to control the airflow into the air intake pipe 35 when the tilt detection element detects that the body 1 is nearly parallel to the ground, i.e., the body 1 is in a lying position.

[0093] Preferably, such as Figure 6 As shown, a handle 312 is provided on the body 1. The user can push the body 1 forward, pull the body 1 backward, or control the rotation of the body 1 by using the handle 312. This embodiment 3 does not limit the location of the air intake pipe 35. As the first implementation of this embodiment 3, as... Figure 5 , Figure 6 As shown, the waste liquid tank 34 is detachably installed on the machine body 1. The air inlet pipe 35 is located inside the machine body 1 and has a first port 351 and a second port 352. When the waste liquid tank 34 is installed on the machine body 1, the first port 351 is aligned and connected with the air inlet 3421, and the second port 352 is aligned and connected with the waste liquid inlet pipe 310.

[0094] The wastewater tank 34 is designed to be detachably installed on the body 1, facilitating user removal for cleaning and maintenance. The air intake pipe 35 is located inside the body 1 and includes a first port 351 and a second port 352. This allows users to easily connect the air intake 3421 to the first port 351 and the wastewater pipe 310 to the second port 352 simply by placing the wastewater tank 34 in a pre-defined position. Users do not need to precisely position the wastewater tank 34, significantly improving installation efficiency. The speed is improved, enhancing the user experience. In addition, installing the air intake pipe 35 inside the body 1 allows for a concealed layout of the air intake pipe 35. On the one hand, this provides some protection for the air intake pipe 35, preventing interference during the disassembly of the waste tank 34 and ensuring the structural integrity of the air intake pipe 35. On the other hand, when the user removes the waste tank 34 from the body 1, only the first port 351 and the second port 352 of the air intake pipe 35 are exposed to the user's view, improving the user's sensory experience.

[0095] As a preferred embodiment of this Example 3, such as Figures 7 to 9 As shown, the waste tank 34 is located on the front side of the machine body 1. The cleaning device also includes a Venturi valve 36 located in the air intake pipe 35. The air intake pipe 35 includes a first section 353 and a second section 354. The first section 353 is connected to the air intake end 361 of the Venturi valve 36, and the second section 354 is connected to the air outlet end 362 of the Venturi valve 36. The waste inlet pipe 310 is connected to the waste inlet end 363 of the Venturi valve 36.

[0096] By setting a Venturi valve 36 to connect the first section 353, the second section 354 of the air intake pipe 35, and the sewage inlet pipe 310, the Venturi valve 36 creates a negative pressure zone 366 at the connection between the first section 353 and the second section 354, through which airflow passes at high speed. The pressure difference between the negative pressure zone 366 and the first chamber 341 draws the sewage in the first chamber 341 into the negative pressure zone 366 through the sewage inlet pipe 310. Furthermore, the sewage, following the direction of airflow, is carried by the airflow through the second section 354 into the second chamber 34. Within 2, the placement of the Venturi valve 36 at the confluence of the air intake pipe 35 and the waste inlet pipe 310 creates a negative pressure zone 366. The pressure difference between the air intake pipe 35 and the first chamber 341 increases the suction force of the air intake pipe 35 on the waste liquid in the first chamber 341. This allows the waste liquid in the first chamber 341 to quickly pass through the air intake pipe 35 into the second chamber 342 under strong suction, reducing the residence time of the waste liquid in the first chamber 341 and reducing the probability of the waste liquid in the first chamber 341 flowing back into the suction device 33.

[0097] Specifically, the body 1 has a cleaning direction that drives the ground brush 32 forward to clean the surface to be cleaned. Figure 7The middle arrow X indicates the cleaning direction. In this embodiment, the waste tank 34 is located on the front side of the body 1. Specifically, when the body 1 is perpendicular to the floor brush 32, that is, when the body 1 is vertical, the waste tank 34 is located on the side of the body 1 along the cleaning direction, that is, the side of the body 1 close to the suction port 321.

[0098] In this embodiment 3, the installation location of the wastewater tank 34 is not limited; it can also be as follows: Figure 10 As shown, the waste liquid tank 34 is installed on the rear side of the machine body 1.

[0099] As a preferred embodiment of this implementation, such as Figure 8 , Figure 9 As shown, the Venturi valve 36 has an airflow converging section 364 that communicates with the second section 354 and an output section 365 that communicates with the first section 353. The cross-sectional area of ​​the airflow converging section 364 is smaller than that of the output section 365, and the cross-sectional area of ​​the airflow converging section gradually decreases from the end away from the output section 365 to the end closer to the output section 365, and has an air outlet 3641 facing the output section 365. The air outlet 3641 is located outside the output section 365.

[0100] The Venturi valve 36 has an internal airflow converging section 364 and an output section 365. The cross-sectional area of ​​the airflow converging section 364 gradually decreases from the end furthest from the output section 365 to the end closest to the output section 365. As the airflow entering the converging section 364 from the first section 353 gradually decreases in its movement space, and with subsequent airflow continuously entering, the airflow in the converging section 364 must enter the output section 365 at a faster speed to meet the flow requirements of subsequent gas. Furthermore, the air pressure in the negative pressure zone 366 is inversely proportional to the gas velocity; as the gas velocity continuously increases, the negative pressure... The air pressure in the pressure zone 366 continuously decreases, thereby increasing the suction force on the sewage in the second chamber 342, accelerating the movement speed of the sewage through the sewage inlet pipe 310 to the air inlet pipe 35, and further reducing the residence time of the sewage in the first chamber 341; in addition, when the airflow carries the sewage into the output section 365, the output section 365 is connected to the first section 353. At this time, the flow rate of the mixture of airflow and sewage tends to be stable, and the mixture of airflow and sewage enters the second chamber 342 at a relatively stable speed, thereby improving the stability of the movement of the sewage in the first chamber 341 to the second chamber 342.

[0101] Specifically, Figure 9 The diagram schematically illustrates the movement directions of gas and waste liquid in the Venturi valve 36. Arrow A indicates the movement direction of gas in the first section 353, arrow B indicates the movement direction of waste liquid in the waste inlet pipe 310, and arrow C indicates the movement direction of the mixture of waste liquid and gas in the second section 354.

[0102] This embodiment does not limit the structural form of the airflow converging part 364 or the positional relationship between the airflow converging part 364 and the output part 365. In another embodiment, the cross-sectional area of ​​the airflow converging part 364 is equal at all points and is smaller than the cross-sectional area of ​​the first segment 353 and the cross-sectional area of ​​the output part 365. In yet another embodiment, the end of the airflow converging part 364 near the output part 365 is located inside the output part 365. The sewage inlet pipe 310 enters the output part 365 through the gap between the output part 365 and the airflow converging part 364, and enters the second cavity 342 through the second segment 354.

[0103] As another preferred embodiment of this implementation, a liquid level detection tube is also provided in the second cavity 342. One end of the liquid level detection tube is connected to the air inlet 3421, and the other end extends into the second cavity 342. The height of the liquid level detection tube is not higher than the height of the air inlet 3421 when the body 1 is lying flat.

[0104] By setting up a liquid level detection tube, the liquid level in the second chamber 342 can be detected. When the machine body 1 is rotated to a flat position, that is, when it is close to parallel with the floor brush 32, the tilt angle of the liquid in the second chamber 342 reaches its maximum. If the liquid level detection tube detects the liquid, it means that the liquid is higher than the height of the air inlet 3421 and there is a risk of backflow into the first chamber 341 through the air inlet 3421. This reminds the user to stop the cleaning work and clean the liquid in the second chamber 342.

[0105] In another embodiment of this third example, a wastewater inlet is provided on the air intake pipe 35, and the wastewater inlet pipe 310 is connected to the air intake pipe 35 through the wastewater inlet. The diameter ratio of the wastewater inlet pipe 310 to the air intake pipe 35 is α, where 0.2 ≤ α ≤ 0.5. In this embodiment, the air intake pipe 35 relies on the low air pressure caused by the rapid flow of internal gas to draw the wastewater in the first chamber 341 into the wastewater inlet pipe 310, and the wastewater follows the airflow in the air intake pipe 35 into the second chamber 342.

[0106] As a preferred embodiment of this Example 3, such as Figure 11 As shown, the exhaust port 331 of the suction device 33 is connected to the air inlet pipe 35, and the suction device 33 injects air into the air inlet 3421 through the air inlet pipe 35. By connecting the exhaust port 331 of the suction device 33 to the air inlet pipe 35, the suction device 33, in addition to its function of reducing the air pressure in the first chamber 341 to suck up the sewage from the suction port 321, further integrates the function of supplying air to the air inlet pipe 35 to suck the sewage from the first chamber 341 into the second chamber 342. This further integration of functions occupies less internal space in the body 1, contributing to the miniaturization of the body 1.

[0107] As a preferred embodiment of this Example 3, such as Figure 12As shown, the first cavity 341 is located above the second cavity 342 and is connected to the second cavity 342 through the connecting port 39. The connecting port 39 has a connected state that connects the first cavity 341 and the second cavity 342 and a closed state that closes the connecting path between the first cavity 341 and the second cavity 342. When the body 1 is perpendicular to the floor brush 32, the connecting port 39 is in the connected state. The connecting port 39 switches between the connected state and the closed state as the body 1 and the floor brush 32 rotate relative to each other.

[0108] The first chamber 341 is positioned above the second chamber 342 and connected to it via a connecting port 39. When the body 1 is perpendicular to the floor brush 32, the waste liquid flows into the second chamber 342 through the connecting port 39 under its own gravity, reducing the residence time of the waste liquid in the first chamber 341 and thus reducing the probability of waste liquid flowing back into the suction device 33. Since the backflow of waste liquid into the suction device 33 is often caused by the shaking of waste liquid due to the tilt of the body 1, the connecting port 39 is configured to switch between a connected state and a closed state with the relative rotation of the body 1 and the floor brush 32. This means that when the body 1 is tilted or nearly parallel to the floor brush 32, the connecting port 39 is closed, and the waste liquid in the second chamber 342 cannot enter the first chamber 341 through the connecting port 39. Therefore, it is avoided that the waste liquid in the second chamber 342 enters the first chamber 341 and flows into the suction device 33 when the body 1 is tilted, further reducing the probability of waste liquid flowing back into the suction device 33.

[0109] Preferably, the cleaning device is equipped with a rotation state detection element, which can detect the rotation angle between the body 1 and the floor brush 32. When the body 1 and the floor brush 32 are detected to be perpendicular, the air supply to the air inlet pipe 35 is stopped, and the dirty liquid in the first chamber 341 flows to the second chamber 342 through the connecting port 39. When the body 1 and the floor brush 32 are detected to be at a preset angle, or when the body 1 and the floor brush 32 are nearly parallel, air is supplied to the air inlet pipe 35, and the dirty liquid in the first chamber 341 is driven into the second chamber 342 through the Venturi effect.

[0110] As a preferred embodiment of this implementation, a stop mechanism is provided at the connection port 39. The stop mechanism includes a slide groove, a stop piece that can slide in the slide groove, and an elastic reset member acting on the stop piece. The stop piece has a stop position that cuts off the connection port 39 and a relaxed position that is located in the slide groove to avoid the connection port 39, corresponding to the closed state and the open state of the connection port 39. When the body 1 is perpendicular to the floor brush 32 assembly, the stop piece is maintained in the relaxed position under the elastic force of the elastic reset member. As the body 1 rotates, the stop piece overcomes the elastic force of the elastic reset member by its gravity and gradually switches from the relaxed position to the stop position.

[0111] In this embodiment 3, the exhaust method of the second chamber 342 is not limited. In one embodiment, such as... Figure 13As shown, the second cavity 342 has a vent 3422 that communicates with the outside, and the vent 3422 is provided with a gas-water separator for gas to pass through.

[0112] By providing a vent 3422 in the second chamber 342 that communicates with the outside, the mixture of sewage and gas injected through the air inlet 3421 enters the second chamber 342. After entering the second chamber 342, the gas and sewage are separated and discharged through the vent 3422. The sewage is blocked by the water-gas separator and cannot be discharged from the sewage tank 34 through the vent 3422. This ensures the air pressure balance of the second chamber 342 while maintaining its airtightness. It also prevents the sewage and gas mixture in the air inlet pipe 35 from being unable to enter the second chamber 342 due to excessive air pressure in the second chamber 342, thereby ensuring the stability of the second chamber 342 in absorbing sewage from the first chamber 341.

[0113] In another implementation, such as Figure 14 As shown, the second cavity 342 has a vent 3422 that communicates with the outside. A gas-water separator is installed inside the vent 3422 to allow gas to pass through. The second cavity 342 is vented to the outside through an exhaust pipe 37, one end of which is located inside the second cavity 342, and the other end passes through the vent 3422 and extends outward. By providing the exhaust pipe 37, the second cavity 342 can communicate with the outside of the fuselage 1 without needing to be close to its side wall, thus enabling diverse installation positions for the second cavity 342.

[0114] Example 4:

[0115] This embodiment 4 is basically the same as embodiment 3 in structure and principle, the only difference being:

[0116] like Figure 15 , Figure 16 As shown, the waste liquid tank 34 is detachably installed on the machine body 1. The machine body 1 is provided with an air outlet 311. The air inlet pipe 35 is located in the waste liquid tank 34 and is connected to the first chamber 341, the second chamber 342, and the air outlet 311 respectively. The waste liquid tank 34 is detachably installed on the machine body 1, which facilitates cleaning and maintenance by the user. The air inlet pipe 35 is located within the waste liquid tank 34. This reduces the space occupied by the air inlet pipe 35 inside the machine body 1, reducing the need for internal drilling and grooving, thus reducing the manufacturing difficulty of the machine body 1 while improving its structural strength. Furthermore, after removing the waste liquid tank 34, the user can clean and maintain it together with the air inlet pipe 35, preventing blockage of the air inlet pipe 35 and reducing the user's cleaning burden. Unlike the first embodiment, in this embodiment the air intake pipe 35 is installed on the waste liquid tank 34, which avoids slotting and opening in the body 1, helps to improve the structural strength of the body 1 and reduces the manufacturing difficulty of the body 1.

[0117] In this embodiment 4, the positional relationship between the air inlet pipe 35 and the waste liquid tank 34 is not limited, and it can be any of the following examples:

[0118] Example 1: The air intake pipe 35 is connected to the waste liquid tank 34 and is located outside the waste liquid tank 34. The waste liquid tank 34 has a first connecting hole on the side wall corresponding to the first cavity 341 and the second cavity 342, respectively, which communicates with the waste liquid intake pipe 310 in the first cavity 341 and the second connecting hole, respectively. The air intake pipe 35 is connected to the air outlet 311, the first connecting hole, and the second connecting hole in sequence. When the waste liquid tank 34 is removed from the body 1, the air intake pipe 35 is removed along with the waste liquid tank 34 because it is installed in the waste liquid tank 34. Preferably, the air intake pipe 35 is suspended outside the side wall of the waste liquid tank 34. The first connecting hole is connected to the air intake pipe 35 through a first passage extending to the outside of the waste liquid tank 34, and the second connecting hole is connected to the air intake pipe 35 through a second passage extending to the outside of the waste liquid tank 34.

[0119] Example 2: The cover of the sewage tank 34 is provided with a clearance through hole. One end of the air inlet pipe 35 is connected to the air outlet 311, and the other end enters the sewage tank 34 through the clearance through hole and connects to the first chamber 341 and the second chamber 342 in sequence.

[0120] Similar to Example 1, the air intake pipe 35 in Example 2 is also located on the waste liquid tank 34, avoiding the need for slots or openings in the body 1. However, unlike Example 1, the air intake pipe 35 in Example 2 is at least partially located inside the waste liquid tank 34. By configuring the air intake pipe 35 to pass through a clearance hole on the cover of the waste liquid tank 34, it ensures that the air intake pipe 35 is at least partially built into the waste liquid tank 34, reducing the volume of the air intake pipe 35 exposed to the outside. This provides some protection for the air intake pipe 35 within the waste liquid tank 34, reducing the probability of interference between the air intake pipe 35 and other components of the cleaning device during the disassembly and assembly of the waste liquid tank 34, thus contributing to the integrity of the air intake pipe 35. Furthermore, the air intake pipe 35... Inserted inside the waste tank 34, it can shorten the distance between the air intake pipe 35 and the waste in the first chamber 341, thereby making it easier for the waste in the first chamber 341 to be sucked into the air intake pipe 35. Under the condition that the gas flow rate in the air intake pipe 35 is constant, it reduces the time required for the waste in the first chamber 341 to be sucked into the second chamber 342, thereby reducing the residence time of the waste in the first chamber 341 and further reducing the probability of the waste in the first chamber 341 flowing back into the suction device 33.

[0121] Example 5:

[0122] This embodiment 5 is basically the same as embodiment 3 in structure and principle, the only difference being:

[0123] like Figure 12 As shown, the cleaning device also includes an air supply device 38, which injects air into the air inlet 3421 through the air inlet pipe 35. The separate air supply device 38, used to inject air into the air inlet 3421 through the air inlet pipe 35, allows for adjustment of the suction force of the air inlet pipe 35 on the waste liquid in the first chamber 341 by controlling the output power of the air supply device 38. A higher air supply power air supply device 38 can be selected to increase the suction speed of the waste liquid in the first chamber 341 from the second chamber 342, reducing the residence time of the waste liquid in the first chamber 341 and thus reducing the probability of the waste liquid in the first chamber 341 flowing back into the suction device 33.

[0124] Example 6:

[0125] Cleaning machines used for cleaning surfaces include handheld cleaning machines such as floor scrubbers and vacuum cleaners, and self-propelled cleaning machines such as robotic vacuum cleaners and mopping robots. This embodiment 6 uses a floor scrubber as an example to illustrate the solution. Those skilled in the art will understand that this solution can also be applied to any of the aforementioned cleaning machines used for cleaning surfaces.

[0126] The cleaning machine includes a main body and a floor brush pivotally connected to the main body. The floor brush includes a floor brush housing 41, on which a cleaning component 42 is provided for rotating and wiping the surface to be cleaned. The cleaning component 42 can be any wiping part that can rotate and wipe the surface to be cleaned, such as a single cleaning roller, a double cleaning roller, or a tracked cleaning cloth. The floor brush housing 41 also includes a liquid dispensing component 44 for supplying liquid to the cleaning component 42 or the surface to be cleaned, a scraping component 431 for scraping off dirt from the cleaning component 42, and a suction port 45 for absorbing dirt. The suction port 45, the scraping component 431, and the liquid dispensing component 44 are arranged sequentially in the rotation direction of the cleaning component 42. When cleaning the surface to be cleaned, the liquid dispensing component 44 provides cleaning liquid to wet the cleaning component 42, and the surface to be cleaned is wiped as the wet cleaning component 42 rotates. The suction port 45 is typically connected to the suction channel 414, wastewater tank, and suction motor located on the floor brush and / or body. The suction motor generates suction force at the suction port 45. Some dirt on the surface to be cleaned enters the suction port 45 under the action of the suction force, and some dirt adhering to the cleaning component 42 is peeled off by the scraping component 431 and enters the suction port 45 under the action of the suction force.

[0127] like Figures 18 to 21 As shown, a cleaning machine with a rotating assembly 43 includes a floor brush housing 41 and a rotating assembly 43 having a scraper 431, the scraper 431 having a position that abuts against or separates from the cleaning component 42 as the rotating assembly 43 rotates. Figure 18 , Figure 19 In the middle, the scraping part 431 is in the position of scraping dirt, in Figure 20 , Figure 21 In the middle, the scraper 431 is in the separated position.

[0128] The cleaning machine in this embodiment 6 is equipped with a cleaning component 42. The cleaning component 42 is rotated to absorb dirt from the surface to be cleaned. It also includes a rotating assembly 43 and a scraping component 431. The rotating assembly 43 rotates to move the scraping component 431 between a scraping position and a separation position. When the cleaning component 42 is cleaning, the scraping component 431 is in the scraping position and scrapes off the dirt adhering to the cleaning component 42 by contacting it, thereby maintaining the cleanliness of the outer surface of the cleaning component 42 and enhancing its cleaning ability. After cleaning, the rotating assembly 43 rotates to move the scraping component 431 to a separation position, facilitating the removal of dirt adhering to the scraping component 431. The cleaning process eliminates the need for manual movement of the scraper component 431, improving the user experience. A liquid distribution component 44 is installed on the brush housing 41 to deliver cleaning fluid to the cleaning component 42, enhancing its cleaning ability and improving the cleaning effect on the surface. Furthermore, the rotating assembly 43 includes a rotating part 432 with a first arc-shaped surface 4321, and a second arc-shaped surface 441 on the liquid distribution component 44. The first and second arc-shaped surfaces 4321 slide together, allowing the scraper component 431 to rotate under the influence of the first arc-shaped surface 4321. This provides both a scraping position that contacts the cleaning component 42 and a separation position that separates from it. The rotation of the scraper component 431 under the influence of the first arc-shaped surface 4321 also guides the rotation of the rotating part 432, allowing it to rotate relative to the first arc-shaped surface 4321 and the second arc-shaped surface 441. This ensures that the scraping component 431 switches between the scraping position and the separation position along the preset trajectory, improving the movement stability of the scraping component 431. This allows the scraping component 431 to apply scraping force to the cleaning component 42 more evenly, ensuring a stable scraping effect on the dirt on the cleaning component 42 without excessively damaging the outer surface of the cleaning component 42, thus helping to extend the service life of the cleaning component 42 and the scraping component 431. On the other hand, the configuration of the first arc surface 4321 and the second arc surface 441 provides a larger force-bearing surface for the rotation of the rotating component 43. The force on the rotating component 43 during rotation is evenly distributed on the contact surface of the first arc surface 4321 and the second arc surface 441, reducing the possibility of stress concentration during the rotation of the rotating component 43 and ensuring the structural strength of the rotating component 43.

[0129] It should be noted that in this embodiment 6, the type of cleaning liquid delivered from the dispensing component 44 to the cleaning component 42 is not limited, and it can be water, disinfectant, acidic cleaning agent, alkaline cleaning agent, neutral cleaning agent, etc.

[0130] In a preferred embodiment of this Example 6, the liquid dispensing component 44 rotates synchronously with the rotation of the rotating component 43. The rotating component 43 is provided with a third arc-shaped surface 4322 facing the direction of the floor brush housing 41, and the floor brush housing 41 is provided with a fourth arc-shaped surface 412 adapted to the third arc-shaped surface 4322. The third arc-shaped surface 4322 and the fourth arc-shaped surface 412 are in sliding fit. By setting the third arc-shaped surface 4322 and the fourth arc-shaped surface 412, the rotating part 432 slides between the third arc-shaped surface 4322 and the fourth arc-shaped surface 412 during rotation. On the one hand, it can play an auxiliary guiding role for the rotation of the rotating part 432. On the basis of the rotation guidance of the first arc-shaped surface 4321 and the second arc-shaped surface 441, the third arc-shaped surface 4322 and the fourth arc-shaped surface 412 further restrict the rotation direction of the rotating part 432, thereby further reducing the possibility of the rotating part 432 deviating during rotation and improving the movement accuracy of the scraping part 431 between the scraping position and the separation position. On the other hand, the friction between the rotating part 432 and the floor brush housing 41 is the sliding friction between the third arc-shaped surface 4322 and the fourth arc-shaped surface 412, which reduces the frictional resistance experienced by the rotating component 43 during rotation, improves the smoothness of the rotation process of the rotating component 43, and optimizes the structural design of the rotating component 43 and the floor brush housing 41. This embodiment does not limit the relationship between the first arc-shaped surface 4321 and the third arc-shaped surface 4322. In one example, the outer surface of the rotating part 432 is divided into the first arc-shaped surface 4321 and the third arc-shaped surface 4322 that are connected to each other. That is, the first arc-shaped surface 4321 and the third arc-shaped surface 4322 are a whole and together constitute the outer surface of the rotating part 432. In another example, the first arc-shaped surface 4321 and the third arc-shaped surface 4322 are not connected to each other.

[0131] Optionally, in this embodiment 6, the first arc-shaped surface 4321 is provided with a snap-fit ​​portion, and the second arc-shaped surface 441 is provided with a mating portion adapted to the snap-fit ​​portion. The snap-fit ​​portion and the mating portion divide the rotation path of the rotating part 432 into a first segment and a second segment. When the rotating part 432 rotates in the first segment, the first arc-shaped surface 4321 and the second arc-shaped surface 441 slide in engagement. When the rotating part 432 moves to the junction of the first segment and the second segment, the snap-fit ​​portion and the mating portion snap in engagement to lock the liquid dispensing component 44 and the rotating part 432. During the rotation of the rotating part 432 in the second segment, the relative position of the liquid dispensing component 44 and the rotating part 432 remains unchanged, i.e., through... The engaging engagement between the snap-fit ​​part and the mating part allows the rotating part 432 to slide relative to the floor brush housing 41 through the sliding engagement between the third arc-shaped surface 4322 and the fourth arc-shaped surface 412, while simultaneously driving the liquid dispensing component 44 to move synchronously. At this time, the relative positions of the first arc-shaped surface 4321 and the second arc-shaped surface 441 remain unchanged. When the rotating part 432 moves from the second segment to the first segment, the engaging engagement between the snap-fit ​​part and the mating part is released. That is, during the movement of the rotating part 432 in the first segment, the first arc-shaped surface 4321 and the second arc-shaped surface 441 maintain relative sliding, and the third arc-shaped surface 4322 and the fourth arc-shaped surface 412 maintain relative sliding.

[0132] As a preferred embodiment of this Example 6, such as Figures 18 to 22 As shown, the liquid distribution component 44 is located above the scraping component 431, and the first arc-shaped surface 4321 at least partially covers the outer periphery of the liquid distribution component 44.

[0133] The liquid dispensing component 44 is positioned above the scraper component 431, such that the rotating assembly 43, including the scraper component 431, at least partially covers the outer periphery of the liquid dispensing component 44 in a wrapping form. This improves the installation and rotational stability of the rotating assembly 43, while reducing the probability of interference or contact between the rotating assembly 43 and other components of the cleaning machine during rotation, thus helping to maintain the structural integrity of the rotating assembly 43. To achieve uniform liquid supply to the cleaning component 42 or the surface to be cleaned, the liquid dispensing component 44 is typically arranged axially. The first arc-shaped surface 4321 at least partially covers the outer periphery of the liquid dispensing component 44, allowing the first arc-shaped surface 4321, which drives the scraper component 431 to rotate, to extend at least partially axially. This allows for reliable installation by covering the liquid dispensing component 44, improving the uniformity and reliability of the axial force on the scraper component 431 when it is in different positions. On the other hand, if leakage or a small amount of liquid seeps out from the liquid dispensing component 44, the seeping liquid can flow along the first arc-shaped surface 4321 onto the scraper component 431, thereby wetting the cleaning component 42. On the other hand, during the scraping process of the cleaning component 42, some of the dirty liquid may enter the floor brush housing 41 through the gap between the scraping component 431 and the liquid distribution component 44. The first arc-shaped surface 4321 that cooperates with the liquid distribution component 44 can temporarily retain the dirty liquid in the first arc-shaped surface 4321, reducing the possibility of liquid flowing to other parts inside the floor brush housing 41 and avoiding damage to other components.

[0134] Preferably, such as Figure 18 , Figure 20 , Figure 22As shown, the liquid distribution component 44 extends along the length of the cleaning component 42 to supply liquid to the cleaning component 42 or the surface to be cleaned. This embodiment 6 uses the liquid distribution component 44, which can supply liquid to the cleaning component 42, as an example for explanation. The cleaning machine also includes a liquid supply pipeline and a liquid supply tank connected to the liquid distribution component 44. When the cleaning machine is running, the cleaning liquid in the supply pipeline is supplied to the liquid distribution component 44 through the supply pipeline, and then supplied to the cleaning component 42 via the liquid distribution component 44. As an optional implementation of this embodiment 6, the liquid distribution component 44 is provided with a plurality of spaced-apart spray nozzles 442, through which the liquid distribution component 44 delivers cleaning liquid to the cleaning component 42. Optionally, there can be multiple spray nozzles 442, evenly distributed along the axial direction of the dispensing component 44; alternatively, there can be multiple spray nozzles 442, unevenly distributed along the axial direction of the dispensing component 44, for example, the density of spray nozzles 442 in the middle region of the dispensing component 44 is greater than the density of spray nozzles 442 at both ends of the dispensing component 44; or, the density of spray nozzles 442 in the middle region of the dispensing component 44 is less than the density of spray nozzles 442 at both ends of the dispensing component 44. The dispensing nozzles can be freely selected according to the material of the surface to be cleaned, the material of the cleaning component 42, and the piping arrangement within the dispensing component 44. As another implementation of this embodiment 6, the dispensing component 44 is provided with a long, narrow groove-shaped opening, through which liquid is supplied to the cleaning component 42. It should be noted that this embodiment 6 does not limit the type of cleaning liquid supplied by the dispensing component 44 to the cleaning component 42, which can be water, disinfectant, acidic cleaning agent, alkaline cleaning agent, neutral cleaning agent, or a mixture of one or more of the above-mentioned cleaning liquids.

[0135] like Figure 18 , Figure 20 , Figure 22 , Figure 23 As shown, furthermore, to improve cleaning efficiency, the dispensing component 44 is typically extended axially along the cleaning component 42. The dispensing component 44 is substantially the same length as or slightly larger than the cleaning component 42 in the axial direction, so that the cleaning component 42 can be uniformly wetted in the axial direction. The length ratio of the second arcuate surface 441 on the dispensing component 44 to the length of the cleaning component 42 ranges from 0.8 to 1.2. To improve the fit strength and rotational reliability of the scraping component 431, the length ratio of the first arcuate surface 4321 that mates with the second arcuate surface 441 to the length of the second arcuate surface 441 ranges from 0.5 to 1.0. For example, the length ratio of the first arcuate surface 4321 to the length of the second arcuate surface 441 can be any value between 0.5 and 1.0, such as 0.5, 0.6, 0.7, 0.75, 0.8, 0.88, 0.9, or 1.0.

[0136] Optionally, the first arc-shaped surface 4321 is a continuous arc-shaped surface extending parallel to the axial direction of the cleaning component 42. The length ratio of the first arc-shaped surface 4321 to the second arc-shaped surface 441 is 1.0, and the length ratio of the second arc-shaped surface 441 to the cleaning component 42 is 1.0. That is to say, the axial lengths of the first arc-shaped surface 4321, the second arc-shaped surface 441, and the cleaning component 42 are basically equal, and the first arc-shaped surface 4321 completely covers the second arc-shaped surface 441 in the axial direction. The scraping component 431 provided on the rotating assembly 43 is subjected to uniform force in the axial direction under the action of the first arc-shaped surface 4321.

[0137] Optionally, the first arcuate surface 4321 is an arcuate surface that extends discontinuously along the edge parallel to the axial direction of the cleaning component 42. As one possible implementation of this embodiment 6, the first arcuate surface 4321 consists of two arcuate segments, which respectively engage with the ends of the second arcuate surface 441. The ratio of the axial extension length of the two arcuate segments to the length of the second arcuate surface 441 ranges from 0.5 to 1.0.

[0138] Optionally, the first arc-shaped surface 4321 can be an arc-shaped surface with a uniform width or an arc-shaped surface with varying width in its axial extension direction, as long as it can cooperate with the second arc-shaped surface 441 on the liquid distribution component 44 to achieve relative sliding.

[0139] As a preferred embodiment of this Example 6, such as Figure 18 , Figure 20 As shown, a suction port 45 is also provided below the scraper 431 to collect the dirt scraped off by the scraper 431. When the scraper 431 comes into contact with the cleaning member 42, the rotating part 432 rotates out at least one part of the side away from the first arc surface 4321 to form the suction port 45.

[0140] By providing a suction port 45 below the scraper 431, the dirt scraped off by the scraper 431 can be sucked up, reducing the probability of dirt falling onto the surface to be cleaned under its own gravity. This helps maintain the cleanliness of the surface and improves the user experience. Furthermore, after cleaning, the rotating component 43 rotates to move the scraper 431 to the separation position. Driven by the rotation of the rotating part 432, the gap between the cleaning component 42 and the scraper 431 increases, allowing dirt outside the suction port 45 to enter more easily. On the other hand, the suction port 45 also allows the cleaning component 42 to more easily suck up dirt from the scraper 431, greatly reducing the cleaning pressure on the scraper 431 and further improving the user experience. When the scraping component 431 and the cleaning component 42 are in contact, the side of the rotating part 432 facing away from the first arc-shaped surface 4321 forms part of the suction port 45. This allows the rotating part 432 to not only drive the scraping component 431 to switch between the scraping and separation positions, but also to form the suction port 45. On one hand, this makes the suction port 45 formed by the back of the first arc-shaped surface 4321 at least partially arc-shaped, which helps guide dirt around the suction port 45 into it under the guidance of the arc-shaped surface. This helps keep the area around the suction port 45 clean. On the other hand, when the scraping component 431 and the cleaning component 42 are in contact, the first arc-shaped surface 4321 slides out at least partially, forming part of the suction port 45 on its back side. When the scraping component 431 and the cleaning component 42 are separated, the originally partially exposed first arc-shaped surface 4321 rotates inward toward the inside of the brush housing 41 and is collected again inside the brush housing 41. During the sliding process of the first arc-shaped surface 4321, at least part of the arc-shaped segment that was originally exposed to the outside interferes with the floor brush housing 41, and the dirt adhering to the surface of the arc-shaped segment is peeled off, thus realizing automatic cleaning of the back of the sliding first arc-shaped surface 4321.

[0141] Preferably, such as Figure 19 , Figure 21 As shown, the floor brush housing 41 is equipped with a wastewater tank and a suction channel 414 that connects the suction port 45 to the wastewater tank. The dirt sucked up by the suction port 45 enters the wastewater tank for temporary storage through the suction channel 414.

[0142] As a preferred embodiment of this Example 6, such as Figures 18 to 21As shown, a flexible scraper 46 is provided above the scraping component 431. When the scraping component 431 is in the separated position, the flexible scraper 46 abuts against the cleaning component 42. When the scraping component 431 is in the dirt-scraping position, the flexible scraper 46 is separated from the cleaning component 42. The flexible scraper 46 above the scraping component 431 prevents interference with the rotation of the cleaning component 42 by removing dirt from it. When the scraping component 431 abuts against the cleaning component 42, it removes dirt from the cleaning component 42 while also hindering its rotation. The separation of the flexible scraper 46 from the cleaning component 42 prevents excessive load on the cleaning component 42, which could cause operational jamming and affect the cleaning effect. When cleaning is complete and the scraper 431 is in the separated position, the flexible scraper 46 abuts against the cleaning component 42, providing a secondary cleaning effect on any remaining dirt on the cleaning component 42 that was not scraped off by the scraper 431. This reduces the amount of dirt, especially hair, remaining on the cleaning component 42, and reduces the cleaning burden on the user. Simultaneously, it intercepts dirt between the cleaning component 42 and the suction port 45 that has not been collected by the suction port 45, preventing it from being thrown outwards under centrifugal force and re-contaminating the surface to be cleaned.

[0143] Preferably, the flexible scraper 46 is made of rubber material and extends along the axial direction of the cleaning component 42, and the length of the flexible scraper 46 is similar to the length of the cleaning component 42.

[0144] As a preferred embodiment of this Example 6, such as Figures 19 to 21 As shown, the rotating assembly 43 is provided with an upper sealing element 433 that cooperates with the liquid dispensing element 44. By providing the upper sealing element 433 on the rotating assembly 43, on the one hand, it seals the gap between the rotating assembly 43 and the liquid dispensing element 44, preventing the sewage thrown out by the centrifugal force generated when the cleaning element 42 rotates from entering the interior of the cleaning machine through the gap between the rotating assembly 43 and the liquid dispensing element 44, reducing the user's cleaning pressure while ensuring the normal operation of the cleaning components; on the other hand, since the sewage thrown out by the cleaning element 42 will be partially adsorbed on the second arc-shaped surface 441 of the liquid dispensing element 44, by providing the upper sealing element 433, as the rotating assembly 43 rotates, the upper sealing element 433 will also slide on the second arc-shaped surface 441, and scrape off the sewage on the second arc-shaped surface 441 during the sliding process, saving the user the operation of cleaning the sewage on the second arc-shaped surface 441 and improving the user experience.

[0145] As a preferred example of this implementation, such as Figure 19 As shown, the rotating component 43 is provided with a first positioning protrusion 435, and the upper seal 433 is provided with a first positioning groove that matches the first positioning protrusion 435. The upper seal 433 is installed on the rotating component 43 through the interference fit between the first positioning protrusion 435 and the first positioning groove.

[0146] This embodiment does not limit the structural form of the upper seal 433. In one example, the upper seal 433 is a block structure. In another example, the upper seal 433 is provided with a first scraping tip whose cross-sectional area gradually decreases from the end near the rotating assembly 43 to the end away from the rotating assembly 43. In this way, when the rotating assembly 43 rotates, the first scraping tip can quickly scrape away the sewage on the second arc-shaped surface 441, thereby achieving self-cleaning of the liquid distribution component 44 to a certain extent.

[0147] As a preferred embodiment of this Example 6, such as Figure 21 , Figure 22 , Figure 24 As shown, the scraping component 431 includes a scraper 4311, a first comb tooth 4312 and a second comb tooth 4313. The first comb tooth 4312 and the second comb tooth 4313 are arranged longitudinally along the length direction of the cleaning component 42, and the comb teeth of the first comb tooth 4312 and the comb teeth of the second comb tooth 4313 are staggered.

[0148] The scraping component 431 is configured to include a scraper 4311, a first comb tooth 4312, and a second comb tooth 4313. During cleaning, the first comb tooth 4312 and the second comb tooth 4313 primarily function to remove dirt from the cleaning component 42 and simultaneously remove hair entanglement. The staggered arrangement of the first comb tooth 4312 and the second comb tooth 4313 reduces the resistance experienced by the cleaning component 42 in the axial direction while ensuring that the cleaning component 42 can be scraped axially by either the first comb tooth 4312 or the second comb tooth 4313. The coordinated arrangement of the first comb tooth 4312 and the second comb tooth 4313 enhances the removal effect of dirt.

[0149] Optionally, the scraping element 431 can also be a straight scraping strip; or, the scraping element 431 can be a straight scraping strip and a comb-tooth scraping strip, wherein the straight scraping strip is located above the comb-tooth scraping strip, or the comb-tooth scraping strip is located above the straight scraping strip; or, the scraping element 431 can be a single comb-tooth scraping strip; or, the scraping element 431 can be any structure capable of scraping off dirt from the cleaning element 42, such as two comb-tooth scraping strips.

[0150] In a preferred embodiment of this Example 6, the floor brush housing 41 is further provided with a drive motor having a power gear, and the rotating assembly 43 is provided with a driven gear 434 adapted to the power gear. The drive motor drives the scraper 431 to abut or separate from the cleaning component 42 through gear meshing transmission. By providing a drive motor with a power gear and a driven gear 434 adapted to the power gear on the rotating assembly 43, the meshing transmission between the drive gear and the driven gear 434 can improve the accuracy of the rotation amplitude of the rotating assembly 43, thereby realizing a smooth switching of the scraper 431 between the scraping position and the separation position; in addition, the drive motor can control the rotation direction of the rotating assembly 43 by controlling the rotation direction of the drive gear, thereby reducing the difficulty of switching the scraper 431 between the scraping position and the separation position.

[0151] As a preferred example of this implementation, such as Figure 25 As shown, the rotation angle of the scraper 431 from the scraping position to the separation position is α. When the scraper 431 is in the separation position, the distance between the scraper 431 and the cleaning component 42 is D, where 20°≤α≤30° and 4mm≤D≤6mm. Setting the rotation angle α and rotation distance D of the scraper 431 between the scraping position and the separation position to 20°≤α≤30° and 4mm≤D≤6mm, where the angle α includes any value between 20° and 30° and the endpoints of 20° and 30°, and the distance D includes any value between 4mm and 6mm and the endpoints of 4mm and 6mm, ensures that the scraper 431 and the cleaning component 42 have sufficient space to clean the dirt attached to the scraper 431. This design also prevents the scraper 431 from having an excessively large range of motion, thus minimizing its internal space and optimizing the structural design of the cleaning machine, contributing to its miniaturization.

[0152] As a preferred embodiment of this Example 6, such as Figure 19 As shown, the floor brush housing 41 is also provided with a lower seal 411 that cooperates with the rotating assembly 43, and the lower seal 411 and the rotating assembly 43 are slidably engaged.

[0153] By setting a lower seal 411 on the floor brush housing 41, on the one hand, it seals the gap between the rotating component 43 and the floor brush housing 41, preventing the wastewater thrown out by the centrifugal force generated when the cleaning component 42 rotates from entering the interior of the cleaning machine through the gap between the rotating component 43 and the floor brush housing 41, thus reducing the user's cleaning pressure and ensuring the normal operation of the cleaning components; on the other hand, since some of the wastewater thrown out by the cleaning component 42 will be adsorbed on the rotating component 43, by setting the lower seal 411, the upper seal 433 will also slide relative to the rotating component 43 as the rotating component 43 rotates, and scrape off the wastewater on the rotating component 43 during the sliding process, reducing the user's cleaning pressure on the rotating component 43 and improving the user experience.

[0154] Preferably, such as Figure 19 , Figure 21 As shown, the rotating part 432 has a third arc-shaped surface 4322 on the side facing the floor brush housing 41. The lower seal 411 abuts against the third arc-shaped surface 4322 and slides relative to the third arc-shaped surface 4322. The third arc-shaped surface 4322 mentioned here can be an extension of the first arc-shaped surface 4321, that is, the first arc-shaped surface 4321 is bent at the end of the rotating part 432 and extends towards the floor brush housing 41 to form the third arc-shaped surface 4322; or the third arc-shaped surface 4322 can be separate from the first arc-shaped surface 4321, with the first arc-shaped surface 4321 and the third arc-shaped surface 4322 respectively forming the outer surfaces of opposite sides of the rotating part 432.

[0155] As a preferred example of this embodiment, the floor brush housing 41 is provided with an outwardly protruding second positioning protrusion 413, and the lower seal 411 is provided with a second positioning groove that matches the second positioning protrusion 413. The lower seal 411 is installed on the floor brush housing 41 through the interference fit between the second positioning protrusion 413 and the second positioning groove.

[0156] This embodiment does not limit the structural form of the lower seal 411. In one example, the lower seal 411 has a block structure. In another example, the upper seal 433 is provided with a second scraping tip whose cross-sectional area gradually decreases from the side near the floor brush housing 41 to the side near the rotating assembly 43. In this way, when the rotating assembly 43 rotates, the second scraping tip can quickly scrape off the sewage on the rotating assembly 43, thereby achieving self-cleaning of the rotating assembly 43 to a certain extent.

[0157] Example 7:

[0158] This embodiment 7 is basically the same as embodiment 6 in structure and principle, the only difference being:

[0159] The second arc-shaped surface includes multiple arc-shaped segments arranged at intervals. Each arc-shaped segment extends along the axial direction of the first arc-shaped surface, and the length ratio between the first arc-shaped surface and the longest of the multiple arc-shaped segments ranges from 0.5 to 1.

[0160] Example 8:

[0161] The structure and principle of Embodiment 8 are basically the same as those of Embodiment 6, with the only difference being:

[0162] The second arc-shaped surface includes multiple arc-shaped segments arranged at intervals. Each arc-shaped segment extends along the axial direction of the first arc-shaped surface. The axial extension length of the first arc-shaped surface is L1, and the sum of the axial extension lengths of each arc-shaped segment along the first arc-shaped surface is L2. The ratio of L1 to L2 is in the range of 0.5-1.

[0163] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0164] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0165] The above descriptions are merely embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A surface cleaning system, comprising a suction port and a wastewater chamber communicating with the suction port, the wastewater chamber being connected to the suction port via a suction channel to store wastewater sucked in from the suction port, and the wastewater chamber discharging wastewater through a discharge channel, characterized in that, The sewage discharge channel is also equipped with a power chamber and a switching device. The switching device is activated to allow the power chamber and the sewage chamber to be in a connected suction state and an isolated state, respectively. The surface cleaning system also includes a pressure reducing device, which can reduce the pressure of the power chamber in the isolated state so that when the power chamber is switched to the suction state, the sewage in the sewage chamber is sucked into the power chamber and discharged after being discharged through the pressure difference.

2. The surface cleaning system according to claim 1, characterized in that, The volume ratio of the power chamber to the sewage chamber is α, where 0.2 ≤ α ≤ 0.

7.

3. The surface cleaning system according to claim 1, characterized in that, The switching device includes a first valve body and a second valve body. The power chamber has a drain port, and the first valve body is located at the drain port. The second valve body is located between the power chamber and the sewage chamber. When the power chamber is in the suction state, the second valve body opens before or simultaneously with the first valve body.

4. The surface cleaning system according to claim 3, characterized in that, The switching device also includes a third valve body, which is located between the power chamber and the pressure reducing device. When the power chamber is in the suction state, the third valve body is closed.

5. The surface cleaning system according to claim 3, characterized in that, The surface cleaning system includes a surface cleaning device and a base station. The suction port and the wastewater chamber are disposed in the surface cleaning device, and the power chamber is disposed in the base station. The pressure reducing device includes a first suction device disposed in the base station. The first suction device is used to suction air in the power chamber to reduce the air pressure in the power chamber. The surface cleaning device is provided with a second suction device for sucking the wastewater from the suction port into the wastewater chamber. When the surface cleaning device is connected to the base station, the wastewater chamber is located above the power chamber.

6. The surface cleaning system according to claim 1, characterized in that, The pressure reduction device includes a vacuum generator, which is connected to either the sewage chamber or the power chamber via a switching valve.

7. The surface cleaning system according to claim 6, characterized in that, The top of the power chamber has a connecting port, through which the power chamber is connected to the vacuum generator.

8. The surface cleaning system according to any one of claims 1-4, 6, and 7, characterized in that, The surface cleaning system includes a body, and the sewage chamber, the pressure reducing device, and the power chamber are all located inside the body. The power chamber is lower than the sewage chamber in vertical height.

9. The surface cleaning system according to claim 8, characterized in that, The surface cleaning system also includes a drain pipe that communicates with the power chamber. One end of the drain pipe is connected to the power chamber, and the other end passes through the body and extends to the outside of the body.

10. The surface cleaning system according to claim 8, characterized in that, The bottom of the machine body has a sewage outlet that communicates with the power chamber, through which the power chamber discharges sewage to the outside of the machine body.

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