Wastewater tank, cleaning device, liquid level measurement method for wastewater tank, and storage medium

Abstract

The present application discloses a wastewater tank, a cleaning device, a liquid level measurement method for the wastewater tank, and a storage medium. The wastewater tank comprises: a tank body, the tank body being provided with an accommodating cavity and a wastewater inlet, the accommodating cavity having a first side and a second side opposite to each other, and when the wastewater tank is in a lying state, the first side being located above the second side; a detection assembly arranged in the accommodating cavity; and a water baffle arranged in the accommodating cavity and at least partially extending between the detection assembly and the second side, the water baffle being configured to guide wastewater to surge toward the detection assembly to trigger the detection assembly. In the wastewater tank of the present application, the water baffle is provided, and the water baffle at least partially extends between the detection assembly and the second side of the accommodating cavity, so that the wastewater tank can share one detection assembly in different cleaning orientations to implement full water detection, thereby reducing costs, avoiding mutual interference between different detection assemblies, reducing the false alarm rate, and also reducing the occupation of the space of the wastewater tank.

Description

Wastewater tanks, cleaning equipment, wastewater tank level detection methods and storage media

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application No. 2024227959660, filed on November 15, 2024, which is incorporated herein by reference in its entirety.

[0003] This application also claims priority to Chinese patent application No. 2024116392637, filed on November 15, 2024, which is incorporated herein by reference in its entirety.

[0004] This application also claims priority to Chinese patent application No. 2024225069946, filed on October 16, 2024, which is incorporated herein by reference in its entirety. [Technical Field]

[0005] This application belongs to the field of clean technology, and in particular relates to sewage tanks, cleaning equipment, sewage tank level detection methods and storage media. [Background Technology]

[0006] With the increasing demand for household cleaning, the corresponding cleaning equipment has also become more diversified. Currently, cleaning equipment can be used in both wet and dry environments, such as floor scrubbers. Because of this dual-use capability, it's crucial to minimize the possibility of moisture from the wastewater tank entering the motor module to prevent damage.

[0007] In existing solutions, the liquid level in the wastewater tank can be detected using a water-fill probe to ensure timely cleaning. To meet the requirements for water-fill detection in different working states of the wastewater tank, such as upright and horizontal positions, multiple sets of water-fill probes are usually installed inside the tank, which results in high cost and a high false alarm rate.

[0008] [Application Content]

[0009] This application proposes a sewage tank, cleaning equipment, a method for detecting the liquid level in the sewage tank, and a storage medium to solve the technical problems of high cost and high false alarm rate of multiple sets of water level probes.

[0010] To address the aforementioned technical problems, this application provides a sewage tank, comprising: a tank body having a accommodating cavity for containing sewage and an inlet communicating with the accommodating cavity, the accommodating cavity having a first side and a second side disposed opposite to each other, wherein when the sewage tank is in a lying position, the first side is located above the second side; a detection component disposed within the accommodating cavity; and a baffle plate disposed within the accommodating cavity and extending at least partially between the detection component and the second side, the baffle plate being used to guide sewage to surge toward the detection component to trigger the detection component.

[0011] The detection component includes two probe bodies spaced apart, and the baffle plate includes two baffle parts spaced apart. The baffle parts are arranged in a one-to-one correspondence with the probe bodies. Each baffle part extends at least between the corresponding probe body and the second side. The two baffle parts guide the sewage to surge toward the probe bodies so that the sewage can pass through the two probe bodies.

[0012] Each of the water-blocking portions extends to abut against the side of the corresponding probe body facing the second side.

[0013] Each of the probe bodies includes a probe carrier and a detection electrode, wherein the detection electrode is disposed on the probe carrier and exposed outside the probe carrier; the width of the side of the water-blocking portion that abuts against the probe body is greater than or equal to the width of the probe carrier; or, the width of the side of the water-blocking portion that abuts against the probe body is greater than or equal to the width of the detection electrode.

[0014] The accommodating cavity also has a first end and a second end that are arranged opposite to each other. When the sewage tank is in an upright state, the first end is located above the second end, and the sewage inlet is located at the first end.

[0015] The water baffle also includes a water baffle strip, which connects the two water baffle portions and extends from the second side to the first side.

[0016] The wastewater tank further includes: a mounting plate disposed within the accommodating cavity, the mounting plate being located between the wastewater inlet and the second end, the outer peripheral wall of the mounting plate conforming to the cavity wall of the accommodating cavity, and the mounting plate having a communication opening; a detection component extending through the mounting plate toward the second end, the detection component being located between the communication opening and the first side; and a baffle plate located on the side of the mounting plate facing the second end, the baffle plate extending from the edge of the communication opening toward the second side toward the detection component.

[0017] The water baffle and the mounting plate are integrally formed; the mounting plate is snapped into the detection component.

[0018] Wherein, in the direction from the first end to the second end, the baffle is located at one-third to two-thirds of the accommodating cavity; and / or, in the direction from the first side to the second side, the detection component is located at one-third to two-thirds of the accommodating cavity.

[0019] The top of the tank has an airflow outlet. The sewage tank also includes: a suction pipe, at least a portion of which is located inside the tank. The suction pipe has a suction port and a discharge port. The discharge port is located inside the tank and below the airflow outlet. The discharge port is connected to the inlet of the accommodating cavity, and the accommodating cavity is also connected to the discharge port and the airflow outlet; and an anti-backflow component, located inside the tank and used to open and close the discharge port.

[0020] The backflow prevention component includes a shielding part, which is adapted to move to the open position of the sewage outlet under the action of the airflow flowing out of the sewage outlet, and the shielding part is adapted to move to the closed position of the sewage outlet under the action of its own gravity or elastic force.

[0021] The shielding part is a flexible part.

[0022] The shielding part is a soft rubber part.

[0023] The shielding part is in the form of a sheet.

[0024] When the cleaning device is lying flat, the rear side of the cleaning device faces downward, the sewage outlet faces upward, and the shielding part is located above the sewage outlet.

[0025] The anti-backflow component is installed on the suction pipe and located outside the suction pipe.

[0026] The backflow prevention component includes a fixing part and a blocking part. The fixing part is fixed to the suction pipe, and the blocking part is movable relative to the suction pipe to open and close the sewage outlet.

[0027] The anti-backflow component is a flexible component, and both the shielding part and the fixing part are sheet-like.

[0028] The shielding part and the fixing part have a pre-fold, and the shielding part extends obliquely away from the sewage outlet in the direction from the fixing part to the shielding part.

[0029] The fixing part is connected to the suction pipe through an adhesive layer.

[0030] The suction pipe includes a suction pipe body and a fixing protrusion. The suction pipe body has a suction port and a discharge port. The fixing protrusion is located on the outer wall of the suction pipe body and on the outer periphery of the discharge port. The fixing part is fixed to the fixing protrusion.

[0031] When the cleaning equipment is upright, the sewage outlet faces the peripheral wall of the housing, and the fixing part is connected to the upper side of the shielding part and located above the sewage outlet.

[0032] The box is equipped with a baffle plate, which is located on the outer periphery of the suction pipe and spaced apart from it. At least a portion of the baffle plate is opposite to the outlet. When the blocking part is in the open position where the outlet is open, the blocking part is in contact with the baffle plate.

[0033] The liquid baffle plate has a clearance opening for avoiding the blocking part. When the blocking part is in the open position of opening the sewage outlet, at least a portion of the blocking part is accommodated in the clearance opening.

[0034] To solve the above-mentioned technical problems, this application provides a cleaning device, including a cleaning module, a body, and a wastewater tank. The body is rotatably mounted on the cleaning module, and the wastewater tank is detachably mounted on the body. The wastewater tank adopts the aforementioned wastewater tank design.

[0035] To address the aforementioned technical problems, this application provides a method for detecting the liquid level of a sewage tank, applicable to the aforementioned sewage tank or the aforementioned cleaning equipment. The liquid level detection method includes: acquiring a trigger signal from the detection component; and determining, based on the trigger signal, whether the amount of sewage in the sewage tank has reached a preset storage capacity.

[0036] The cleaning device has at least a first cleaning posture, which includes a lying-down cleaning posture; the detection component includes two probe bodies spaced apart, and acquiring the trigger signal of the detection component includes acquiring the trigger signal generated after the two probe bodies are connected by sewage; wherein, when the cleaning device is in the first cleaning posture, the sewage is guided by the baffle plate to form a surge towards the probe bodies and connects the two probe bodies to generate the trigger signal.

[0037] The cleaning device also has a second cleaning posture, which includes an upright cleaning posture; wherein, when the cleaning device is in the second cleaning posture, the sewage level in the sewage tank rises to the point that it connects the two probe bodies to generate the trigger signal.

[0038] The preset water storage capacity is related to the cleaning posture of the cleaning equipment. The preset water storage capacity when the cleaning equipment is in a lying cleaning posture is the first water storage capacity, and the preset water storage capacity when the cleaning equipment is in an upright cleaning posture is the second water storage capacity. The second water storage capacity is higher than the first water storage capacity.

[0039] The step of determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal includes: determining whether the duration of the trigger signal has reached the preset duration; if the duration of the trigger signal has reached the preset duration, determining that the amount of sewage in the sewage tank has reached the preset storage capacity.

[0040] Before determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal, the liquid level detection method further includes: confirming the cleaning posture of the cleaning equipment; determining the corresponding preset duration based on the cleaning posture of the cleaning equipment, wherein the preset duration corresponding to the first cleaning posture is less than the preset duration corresponding to the second cleaning posture.

[0041] The step of determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal includes: determining whether the generation frequency of the trigger signal has reached the preset frequency; if the generation frequency of the trigger signal has reached the preset frequency, determining that the amount of sewage in the sewage tank has reached the preset storage capacity.

[0042] The liquid level detection method further includes: determining that the amount of sewage in the sewage tank has reached the preset storage capacity, controlling the cleaning equipment to stop cleaning, and issuing a prompt.

[0043] To address the aforementioned technical problems, this application provides a computer-readable storage medium storing program data that can be executed to implement the liquid level detection method described above.

[0044] Beneficial Effects: The wastewater tank of this application, by incorporating a baffle plate that extends at least partially between the detection component and the second side of the receiving cavity, allows the wastewater tank to share a single set of detection components for full-water detection under different cleaning postures. This reduces costs, avoids interference between different sets of detection components, and decreases false alarm rates; it also reduces the space occupied by the wastewater tank. Furthermore, by incorporating the baffle plate, the full-water detection sensitivity of the detection component in this application is effectively improved. Compared to existing solutions where the wastewater tank needs to accommodate full-water detection, resulting in an increased overall volume, the wastewater tank of this application can reduce its volume while maintaining a fixed required wastewater storage capacity, thus improving the volume utilization rate of the wastewater tank. The cleaning equipment using the wastewater tank of this application is also lighter and more flexible overall. [Attached Image Description]

[0045] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0046] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the sewage tank of this application;

[0047] Figure 2 is a cross-sectional structural schematic diagram of an embodiment of the sewage tank of this application;

[0048] Figure 3 is a cross-sectional structural schematic diagram of an embodiment of the sewage tank of this application from another perspective;

[0049] Figure 4 is a partial structural schematic diagram of an embodiment of the sewage tank of this application, wherein the tank body and the detection electrode are not shown;

[0050] Figure 5 is an exploded view of a sewage tank according to an embodiment of the sewage tank of this application;

[0051] Figure 6 is a schematic diagram of the assembly of the suction pipe and anti-backflow component in the sewage tank in Figure 5;

[0052] Figure 7 is a schematic diagram of the assembly of the outlet end of the suction pipe and the anti-backflow component in Figure 6;

[0053] Figure 8 is an assembly diagram of the outlet end of the suction pipe and the anti-backflow component in Figure 7 from another angle.

[0054] Figure 9 is a schematic diagram of the assembly of the suction pipe, tank body, and anti-backflow component in the sewage tank shown in Figure 5.

[0055] Figure 10 is another assembly diagram of the suction pipe, tank body, and anti-backflow component in the sewage tank shown in Figure 9.

[0056] Figure 11 is a cross-sectional view of the suction pipe, tank body, and anti-backflow component in the sewage tank shown in Figure 10.

[0057] Figure 12 is a schematic diagram of the tank in Figure 9;

[0058] Figure 13 is a schematic diagram of the overall structure of an embodiment of the cleaning equipment of this application;

[0059] Figure 14 is a flowchart illustrating an embodiment of the wastewater tank level detection method of this application;

[0060] Figure 15 is a flowchart illustrating another embodiment of the wastewater tank level detection method of this application;

[0061] Figure 16 is a schematic diagram of a sub-process of an embodiment of the wastewater tank level detection method of this application;

[0062] Figure 17 is a schematic diagram of a sub-process of another embodiment of the wastewater tank level detection method of this application;

[0063] Figure 18 is a schematic diagram of a framework of an embodiment of the computer-readable storage medium of this application.

Detailed Implementation Methods

[0064] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0065] Through long-term research, the applicant has discovered that some wastewater tank solutions, in order to meet the needs of full-water detection under different conditions, will set up multiple sets of detection components according to the different distribution of wastewater inside the wastewater tank under different conditions. For example, when the wastewater tank is in an upright position, the detection component used for upright position detection will come into contact with the wastewater and indicate that the tank is full; when the wastewater tank is in a horizontal position, the detection component used for horizontal position detection will come into contact with the wastewater and indicate that the tank is full.

[0066] Therefore, this type of sewage tank detection component has many components, high cost, not only occupies the space of the sewage tank, but also has problems such as difficulty in cleaning, mutual interference between detection components, and high false alarm rate.

[0067] In view of this, in order to solve the above-mentioned problems caused by multiple sets of detection components and to achieve effective water full detection, please refer to Figures 1 to 3. Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the sewage tank of this application; Figure 2 is a cross-sectional structural schematic diagram of an embodiment of the sewage tank of this application; Figure 3 is a cross-sectional structural schematic diagram of another perspective of an embodiment of the sewage tank of this application. An embodiment of this application provides a sewage tank 100. The sewage tank 100 includes a tank body 1, a detection component 120, and a baffle plate 130. A receiving cavity 11 for containing sewage and a sewage inlet 112 communicating with the receiving cavity 11 are formed inside the tank body 1. The sewage inlet 112 is used to communicate with the sewage inlet channel 113. Under the negative pressure of the fan module of the cleaning equipment, sewage and debris enter the receiving cavity 11 through the sewage inlet 112. The receiving cavity 11 has a first side 101 and a second side 102 arranged opposite to each other. When the sewage tank 100 is in a flat state, the first side 101 is located above the second side 102. The detection component 120 is disposed within the receiving cavity 11. When the sewage in the receiving cavity 11 reaches a certain level, the sewage can trigger the detection component 120 to generate a trigger signal, thereby realizing the water full indication function. The baffle plate 130 is disposed within the receiving cavity 11 and extends at least partially between the detection component 120 and the second side 102. The baffle plate 130 is used to guide the sewage to surge towards the detection component 120 to trigger the detection component 120.

[0068] As can be seen from the above structure, when the sewage tank 100 is in an upright position, the detection component 120 can normally detect the amount of sewage in the sewage tank 100 to realize the full water indication function. When the sewage tank 100 is in a horizontal position, or when the liquid inside the container cavity 11 vibrates due to vigorous cleaning actions during user use, the sewage in the container cavity 11 changes from bottom sedimentation as in the upright position to flowing towards the cavity wall on the second side 102. The sewage that comes into contact with the baffle plate 130 can change its direction of movement and surge towards the detection component 120. When the sewage reaches a certain level, the detection component 120 can be triggered in time to prevent sewage from overflowing. When the sewage tank 100 is in an inclined position between the upright and horizontal positions, the baffle plate 130 can also guide the sewage to contact the baffle plate 130, so that the detection component 120 can be triggered in time when the water is full.

[0069] The wastewater tank 100 of this application, by setting a baffle plate 130, with the baffle plate 130 extending at least partially between the detection component 120 and the second side 102 of the accommodating cavity 11, allows the wastewater tank 100 to share a single set of detection components 120 for water full detection under different cleaning postures. This reduces costs, avoids interference between different sets of detection components 120, reduces false alarm rates, and also reduces the space occupied by the wastewater tank 100. Furthermore, by setting the baffle plate 130, the water full detection sensitivity of the detection component 120 in this application is effectively improved. Compared to existing solutions where the wastewater tank 100 needs to have a tolerance space for water full detection, resulting in an increased overall volume, the wastewater tank 100 of this application can reduce its volume while maintaining a fixed amount of wastewater, thus improving the volume utilization rate of the wastewater tank 100. The cleaning equipment using the wastewater tank 100 of this application is lighter and more flexible overall.

[0070] Please refer to Figures 3 and 4. Figure 4 is a partial structural schematic diagram of an embodiment of the wastewater tank of this application, in which the tank body and detection electrodes are not shown. In some embodiments, the detection assembly 120 includes two probe bodies 1201 spaced apart. The two probe bodies 1201 emit a water full signal by being conducted by wastewater, thereby realizing water full detection. Therefore, the baffle plate 130 includes two water-blocking parts 131 spaced apart, with each water-blocking part 131 corresponding to one of the probe bodies 1201. Each water-blocking part 131 extends at least between the corresponding probe body 1201 and the second side 102. The two water-blocking parts 131 guide wastewater to flow towards the corresponding probe body 1201, so that the wastewater passes through the two probe bodies 1201. By connecting the two probe bodies 1201, the water fullness detection in the sewage tank 100 can be accurately realized. By guiding the sewage towards the corresponding probe body 1201 through the two water-blocking parts 131, the water fullness detection sensitivity of the detection component 120 can be improved, and a set of detection components 120 can realize the water fullness detection of the sewage tank 100 under different cleaning postures.

[0071] Of course, in other embodiments, the detection component 120 can also be a float level sensor, a photoelectric level sensor, an ultrasonic level sensor, or other detection methods. By guiding the sewage toward the detection component 120 through the baffle plate 130, different types of detection components 120 can be used to detect full water in various clean states of the sewage tank 100.

[0072] To better guide the wastewater along the water-blocking section 131 to contact the probe body 1201, each water-blocking section 131 extends to abut against the side of the corresponding probe body 1201 facing the second side 102. When the wastewater impacts the water-blocking section 131 and climbs along the water-blocking section 131 towards the probe body 1201, the wastewater flow moving along the water-blocking section 131 towards the probe body 1201 is less likely to break, making it easier to contact and connect the two probe bodies 1201, thereby improving the water full detection sensitivity of the detection component 120.

[0073] Specifically, referring to Figure 3, the probe body 1201 includes a probe carrier 1211 and a detection electrode 1212. The detection electrode 1212 is disposed on the probe carrier 1211 and exposed outside the probe carrier 1211. The probe carrier 1211 provides support and protection for the detection electrode 1212. The width of the water-blocking portion 131 on the side abutting against the probe body 1201 is greater than or equal to the width of the probe carrier 1211; or, the width of the water-blocking portion 131 on the side abutting against the probe body 1201 is greater than or equal to the width of the detection electrode 1212. The width of the water-blocking portion 131 is appropriate, which facilitates the rise of sewage water to contact the probe body 1201, thereby connecting the two probe bodies 1201.

[0074] In some embodiments, the accommodating cavity 11 also has a first end 103 and a second end 104 disposed opposite to each other. When the sewage tank 100 is in an upright state, the first end 103 is located above the second end 104. The sewage inlet 112 is located at the first end 103, and the baffle plate 130 is located between the first end 103 and the second end 104. Under the negative pressure of the blower module of the cleaning equipment, sewage and debris are drawn into the sewage tank 100 with the airflow. After gas-liquid separation, the sewage and debris finally fall into the depth of the accommodating cavity 11, that is, into the area of ​​the accommodating cavity 11 near the second end 104. Of course, in other embodiments, the sewage inlet 112 may also be located on the first side 101.

[0075] Furthermore, the baffle plate 130 also includes a baffle strip 132. The baffle strip 132 connects the two baffle portions 131 and extends from the second side 102 towards the first side 101. Since the baffle strip 132 extends from the second side 102 of the accommodating cavity 11 towards the detection assembly 120, when the sewage tank 100 is in a flat position or when the sewage tank 100 moves back and forth with a large amplitude, the baffle strip 132 can block the sewage flowing from the second end 104 to the first end 103 in the accommodating cavity 11, preventing the sewage from flowing out of the inlet 112. In addition, the baffle strip 132 can also allow sewage to flow towards the first side 101. The baffle strip 132 connects the two baffle portions 131, so the sewage flow flowing towards the probe body 1201 along the two baffle portions 131 is not easily interrupted, which is conducive to the sewage flowing towards the probe body 1201 and conducting the two probe bodies 1201.

[0076] Specifically, when the water-blocking strip 132 extends from the second side 102 to the first side 101, it is also inclined towards the second end 104. At this time, after the sewage surges towards the water-blocking plate 130 and contacts the water-blocking strip 132, the water-blocking strip 132 can cause the sewage to change its direction of movement and surge towards the second end 104 deep in the receiving cavity 11, preventing the sewage from overflowing from the sewage inlet 112.

[0077] Since a set of detection components 120 is used to detect the fullness of the wastewater tank 100 under different cleaning postures, to improve the fullness detection function of the detection components 120 in different states of the wastewater tank 100, the distance between the two probe bodies 1201 and the second end 104 is the same, and the distance between the two probe bodies 1201 and the second side 102 is the same. Because the distance between the two probe bodies 1201 and the second end 104 is the same, when the wastewater tank 100 is in an upright state, the distance between the two probe bodies 1201 and the bottom of the receiving cavity 11 is the same, and both probe bodies 1201 can stably contact the wastewater and be conducted by the wastewater to achieve fullness detection. Because the distance between the two probe bodies 1201 and the second side 102 is the same, when the wastewater tank 100 is in a lying state, the distance between the two probe bodies 1201 and the bottom of the receiving cavity 11 is the same, and both probe bodies 1201 can stably contact the wastewater and be conducted by the wastewater to achieve fullness detection.

[0078] In some embodiments, the baffle plate 130 is located at one-third to two-thirds of the accommodating cavity 11 in the direction from the first end 103 to the second end 104. The distance between the baffle plate 130 and the second end 104 of the accommodating cavity 11 is appropriate, allowing the accommodating cavity 11 to maintain a certain buffer distance from the sewage inlet 112 located at the first end 103 while accumulating a certain amount of sewage. Specifically, the baffle plate 130 is located at one-third, one-half, or two-thirds of the accommodating cavity 11 in the direction from the first end 103 to the second end 104; this is not limited and can be adjusted according to actual product requirements.

[0079] Furthermore, in the direction from the first side 101 to the second side 102, the detection component 120 is located at one-third to two-thirds of the accommodating cavity 11. The distance between the detection component 120 and the second side 102 of the accommodating cavity 11 is appropriate. When the wastewater tank 100 is in a flat or inclined position, the wastewater tank 100 can accumulate a certain amount of wastewater. At the same time, when the wastewater reaches a certain amount, the detection component 120 can promptly sense the wastewater, thereby realizing a full water indication. Specifically, in the direction from the first side 101 to the second side 102, the detection component 120 is located at one-third, one-half, or two-thirds of the accommodating cavity 11. This is not limited here and can be adjusted according to actual product requirements.

[0080] In some embodiments, the wastewater tank 100 further includes a mounting plate 140. The mounting plate 140 is disposed within the receiving cavity 11, located between the inlet 112 and the second end 104, and its outer periphery conforms to the inner wall of the receiving cavity 11. The mounting plate 140 has a communication opening 141, allowing wastewater and debris entering the receiving cavity 11 through the inlet 112 to flow deeper into the receiving cavity 11, i.e., towards the second end 104. A detection component 120 extends through the mounting plate 140 towards the second end 104, located between the communication opening 141 and the first side 101. A baffle plate 130 is located on the side of the mounting plate 140 facing the second end 104, extending from the edge of the communication opening 141 towards the second side 102 towards the detection component 120.

[0081] By providing an mounting plate 140 within the accommodating cavity 11, the space between the mounting plate 140 and the second end 104 of the accommodating cavity 11 can better store and isolate sewage; and the space between the mounting plate 140 and the first end 103 of the accommodating cavity 11 can provide sufficient separation space for the gas-liquid mixture. Since the detection component 120 is located between the connecting port 141 and the first side 101, the detection component 120 is positioned to avoid the connecting port 141, so that when sewage passes through the connecting port 141, it will not directly contact the detection component 120 and cause a false alarm. Since the baffle plate 130 extends from the edge of the connecting port 141 toward the second side 102 toward the detection component 120, the baffle plate 130 can play a certain role in blocking the connecting port 141, preventing sewage from flowing directly out of the connecting port 141 when it surges from the second end 104 to the first end 103; however, there is a gap between the baffle plate 130 and the connecting port 141, which will not affect the normal flow of sewage and debris through the connecting port 141 toward the second end 104 of the accommodating cavity 11.

[0082] It should be noted that the fit between the outer peripheral wall of the mounting plate 140 and the cavity wall of the receiving cavity 11 means that a gap may be left between the mounting plate 140 and the cavity wall of the receiving cavity 11, but they fit together as a whole to prevent sewage from passing through. The radial cross-section of the mounting plate 140 and the receiving cavity 11 is contoured to fit the cavity wall of the receiving cavity 11. Correspondingly, the connecting port 141 is opened near the second side 102, and the shape of the connecting port 141 is similar to the shape of the cavity wall of the second side 102 of the receiving cavity 11. Sewage and debris flow smoothly into the receiving cavity 11 along the cavity wall of the second side 102 of the receiving cavity, avoiding the obstruction of sewage and debris when moving towards the second end 104 through the connecting port 141. The water-blocking strip 132 is correspondingly set at the edge of the connecting port 141 near the second side 102 to fully cover the connecting port 141 and prevent sewage from flowing directly out of the sewage inlet 112 through the connecting port 141 when the sewage tank 100 is lying flat.

[0083] Furthermore, the baffle plate 130 and the mounting plate 140 are integrally formed. Integrating the baffle plate 130 and the mounting plate 140 reduces the number of parts, facilitates production, and makes it easier to install and remove the baffle plate 130.

[0084] Furthermore, the mounting plate 140 is snapped into the detection assembly 120. This snap-fit ​​connection facilitates the installation and removal of the mounting plate 140 within the receiving cavity 11. The mounting plate 140 and the detection assembly 120 are relatively fixed through this snap-fit ​​connection, making assembly and disassembly simple and convenient. Specifically, the mounting plate 140 is snapped into the probe carrier 1211 of the detection assembly 120.

[0085] In some embodiments, the housing 1 further includes a sludge inlet channel 113, which is separated from the accommodating cavity 11 and connected to it at a sludge inlet 112. At the end of the housing 1 furthest from the sludge inlet 112, an air inlet 114 is formed, communicating with the sludge inlet channel 113, allowing airflow carrying sewage and debris to enter the sludge inlet channel 113. After gas-liquid separation, the sewage and debris enter the accommodating cavity 11. Of course, in other embodiments, the sludge inlet channel 113 may not be formed inside the housing 1, and the sludge inlet 112 may be connected to an external sludge inlet channel 113.

[0086] In some embodiments, referring to Figure 4, the wastewater tank 100 further includes a cover 150, a baffle 151, and a probe bracket 152. The tank 1 is open at one end corresponding to the inlet 112 of the receiving cavity 11, and the cover 150 is placed over the open end of the tank 1. The cover 150 is used to connect with the blower module, allowing airflow to form negative pressure. The baffle 151 is located inside the cover 150 at the inlet 112, guiding the wastewater after gas-liquid separation into the receiving cavity 11. The probe bracket 152 is located inside the cover 150, and a detection component 120 is mounted on the probe bracket 152. When the cover 150 is placed over the tank 1, the detection component 120 extends into the receiving cavity 11. By installing the detection component 120 onto the cover 150 via the probe bracket 152 and snapping the baffle 151 onto the detection component 120, the cover 150 and the box 1 can be disassembled to remove the objects inside the box 1, making it easier to clean the box 1.

[0087] A wastewater tank 100 according to yet another embodiment of this application is described below with reference to Figures 5-12.

[0088] Referring to Figures 5, 6 and 10, a wastewater tank 100 according to another embodiment of this application is used for cleaning equipment. The cleaning equipment includes a body, a wastewater tank 100, a floor brush and a power component. The wastewater tank 100 is disposed on the body, the floor brush is connected to the bottom of the body, the power component is installed on the body and is located on the upper side of the wastewater tank 100, and the power component has an exhaust port communicating with the external environment. The power component is used to drive airflow through the floor brush, the wastewater tank 100 and the power component.

[0089] When the cleaning equipment is working, the power unit operates, and the floor brush of the cleaning equipment sucks up the sewage on the working surface and flows into the sewage tank 100. The airflow carrying sewage undergoes gas-liquid separation in the sewage tank 100. The separated liquid is stored in the sewage tank 100, and the separated gas flows out of the sewage tank 100 and is discharged into the external environment after passing through the power unit.

[0090] The wastewater tank 100 includes a tank body 1, a suction pipe 2, and an anti-backflow component 3. The tank body 1 has a receiving cavity 11 for collecting wastewater, and an airflow outlet 13 is formed at the top of the tank body 1. At least a portion of the suction pipe 2 is located inside the tank body 1. The at least a portion of the suction pipe 2 being located inside the tank body 1 can include the following situations: for example, a part of the suction pipe 2 may be located inside the tank body 1; or, for another example, the entire suction pipe 2 may be located inside the tank body 1.

[0091] The chamber located outside the suction pipe 2 in the housing 1 forms a receiving cavity 11 for containing sewage. The suction pipe 2 can be detachably assembled into the housing 1. Alternatively, the suction pipe 2 can be integrally formed into the housing 1.

[0092] The suction pipe 2 has a suction port 21 and a discharge port 22. The discharge port 22 is located inside the housing 1 and below the airflow outlet 13. The discharge port 22 is connected to the inlet port 112 of the receiving cavity 11. The receiving cavity 11 is also connected to the discharge port 22 and the airflow outlet 13. Wastewater can enter the suction pipe 2 through the suction port 21, flow through the suction pipe 2, and exit the suction pipe 2 through the discharge port 22, flowing into the receiving cavity 11 through the inlet port 112. The wastewater undergoes gas-liquid separation inside the housing 1. The location of the discharge port 22 inside the housing 1 and its connection to the inlet port 112 ensures that the wastewater sucked up by the suction pipe 2 is discharged into the receiving cavity 11. The top of the tank 1 has an airflow outlet 13, and the sewage outlet 22 is located below the airflow outlet 13. The sewage can be stored in the containment cavity 11 after flowing out through the sewage outlet 22 by the gravity of the sewage itself. The separated gas flows out of the sewage tank 100 through the airflow outlet 13.

[0093] Optionally, the suction pipe fitting 2 includes a suction pipe body 23 and a bottom sealing plate 25. The lower end of the suction pipe body 23 is connected to the bottom sealing plate 25. The bottom sealing plate 25 can be used to cover the bottom of the box 1. The bottom sealing plate 25 and the box 1 can jointly define the receiving cavity 11.

[0094] Optionally, the suction pipe body 23 may include a first pipe body 231 and a second pipe body 232. The first pipe body 231 extends in the vertical direction and has a suction port 21 at its lower end. The second pipe body 232 is connected to the upper end of the first pipe body 231 and is formed as a bend. A sewage outlet 22 is formed on the second pipe body 232.

[0095] The anti-backflow component 3 is located inside the housing 1 and is used to open and close the outlet 22. When the cleaning equipment stops working, such as when the cleaning equipment is tilted, especially when the cleaning equipment is lying flat, the sewage in the receiving cavity 11 is more likely to flow back to the floor brush through the outlet 22. At this time, the anti-backflow component 3 can close the outlet 22 to prevent sewage from flowing back from the outlet 22 into the suction pipe 2 and flowing to the floor brush. When the cleaning equipment is working, the anti-backflow component 3 can open the outlet 22 to allow sewage to be discharged into the receiving cavity 11 through the outlet 22.

[0096] According to the embodiment of this application, the sewage tank 100 is equipped with an anti-backflow component 3 for opening and closing the sewage outlet 22. When the cleaning equipment stops working, for example when the cleaning equipment is tilted, especially when the cleaning equipment is lying flat, the anti-backflow component 3 can close the sewage outlet 22 to effectively prevent sewage from flowing back from the sewage outlet 22 through the suction pipe 2 into the floor brush and contaminating the floor brush or even the ground.

[0097] Referring to Figures 6-9, according to some embodiments of this application, the anti-backflow component 3 includes a blocking part 31. The blocking part 31 is adapted to move to the open position of the outlet 22 under the action of the airflow flowing out of the outlet 22, and the blocking part 31 is adapted to move to the closed position of the outlet 22 under the action of its own gravity or elastic force. When the cleaning equipment is working, the suction pipe 2 sucks in sewage through the suction port 21, and the airflow carrying the sewage flows towards the outlet 22. This airflow will generate a thrust on the blocking part 31, causing the blocking part 31 to move to the open position of the outlet 22, so that the outlet 22 opens, facilitating the discharge of sewage from the outlet 22 into the receiving cavity 11. When the cleaning equipment is not working, for example, when the cleaning equipment is lying flat with the rear side of the cleaning equipment facing down and the outlet 22 facing up, the blocking part 31 is located above the outlet 22. At this time, the blocking part 31 moves to the closed position of the outlet 22 under the action of its own gravity or elastic force, thereby preventing sewage backflow.

[0098] For example, the shielding part 31 can be a flexible part. When the cleaning equipment is working, under the thrust of the airflow, the flexible part can undergo elastic deformation to move the shielding part 31 to the position where the sewage outlet 22 is open. When the cleaning equipment is not working, the flexible part can use its own elastic force to return to the position where the sewage outlet 22 is closed. For another example, the shielding part 31 and the suction pipe 2 can be connected by an elastic element. When the cleaning equipment is working, the thrust generated by the airflow can overcome the elastic force of the elastic element to move the shielding part 31 to the open position where the sewage outlet 22 is open. When the cleaning equipment is not working, the restoring force of the elastic element can move the shielding part 31 to the position where the sewage outlet 22 is closed.

[0099] By utilizing the thrust of airflow on the shielding part 31 or the effect of the shielding part 31's own gravity or elastic force, the automatic opening and closing function of the shielding part 31 can be realized. This simplifies the structure of the anti-backflow component 3 and saves manufacturing costs compared to using an electronic control module to control the automatic opening and closing function of the anti-backflow component 3.

[0100] Referring to Figures 6-9, according to some embodiments of this application, the shielding part 31 is a flexible part. When the cleaning equipment is working, the flexible shielding part 31 can undergo elastic deformation under the thrust of the airflow, so that the shielding part 31 moves to the open position of opening the sewage outlet 22, thereby ensuring that the sewage can be smoothly discharged into the receiving cavity 11 through the sewage outlet 22. When the cleaning equipment is not working, the flexible shielding part 31 can also move to the position of closing the sewage outlet 22 under the action of the restoring force, thereby preventing sewage from flowing back into the suction pipe 2 through the sewage outlet 22.

[0101] Referring to Figures 6-8, according to some embodiments of this application, the shielding part 31 is a soft rubber part. For example, the shielding part 31 can be a silicone part, a rubber part, or a plastic part. The shielding part 31 being a soft rubber part gives it good flexibility. When the cleaning equipment is working, the soft rubber part can undergo elastic deformation under the thrust of the airflow, so that the shielding part 31 moves to the open position of opening the sewage outlet 22. When the cleaning equipment is not working, the soft rubber part can also move to the position of closing the sewage outlet 22 under the action of the restoring force.

[0102] Referring to Figures 6-8, according to some embodiments of this application, the shielding part 31 is sheet-shaped. When the shielding part 31 is in the closed position of the sewage outlet 22, the sheet-shaped shielding part 31 can fit well against the sewage outlet 22, forming a good sealing effect, thereby effectively preventing sewage from flowing back into the suction pipe 2 through the sewage outlet 22. When the cleaning equipment is working, the sheet-shaped shielding part 31 can also reduce the resistance of sewage flow, allowing the shielding part 31 to move more smoothly to the open position of the sewage outlet 22 under the thrust of the airflow.

[0103] The sheet-like blocking part 31 can take various shapes and sizes, such as square, rectangle, polygon, circle, ellipse, etc. The specific shape and size of the blocking part 31 are not limited; they can be determined based on the specific shape and size of the sewage outlet 22. The size of the blocking part 31 can be equal to, slightly larger than, or slightly smaller than the size of the wiping component. As long as the blocking part 31, when moved to the position closing the sewage outlet 22, can effectively seal the outlet 22, ensuring that sewage does not flow back into the suction pipe 2 through the outlet 22, it is sufficient.

[0104] Referring to Figures 6-8, according to some embodiments of this application, when the cleaning equipment is lying flat, the rear side of the cleaning equipment faces downwards, the sewage outlet 22 faces upwards, and the shielding part 31 is located above the sewage outlet 22. When the cleaning equipment is lying flat, the sewage outlet 22 faces upwards, so that the shielding part 31 can naturally droop downwards under its own weight to shield the sewage outlet 22, preventing sewage in the receiving cavity 11 from flowing back into the suction pipe 2 through the sewage outlet 22.

[0105] Referring to Figures 6-8, according to some embodiments of this application, the anti-backflow component 3 is installed on the suction pipe 2 and is located outside the suction pipe 2. The anti-backflow component 3 being located outside the suction pipe 2 makes installation and maintenance of the anti-backflow component 3 more convenient, and also reduces or avoids the resistance to the flow of sewage within the suction pipe 2 that would have been caused by the anti-backflow component 3 being located inside the suction pipe 2.

[0106] Referring to Figures 6-9, according to some embodiments of this application, the anti-backflow component 3 includes a fixing part 32 and a blocking part 31. The fixing part 32 is fixed to the suction pipe 2, and the blocking part 31 is movable relative to the suction pipe 2 to open and close the sewage outlet 22. The fixing part 32, fixed to the suction pipe, can fix the blocking part 31. The blocking part 31 is a free end and can move to the position of opening or closing the sewage outlet 22 under the thrust of the airflow or the force of its own weight or elasticity.

[0107] When the cleaning equipment is working, sewage enters the receiving cavity 11 through the sewage outlet 22. At this time, the airflow carrying sewage will generate an upward thrust on the shielding part 31. The thrust generated by this airflow can overcome the weight or elastic force of the shielding part 31 itself, causing the shielding part 31 to move upward to the position where the sewage outlet 22 is opened, thereby opening the sewage outlet 22 so that sewage can flow into the receiving cavity 11 through the sewage outlet 22.

[0108] When the cleaning equipment is not in operation, the shield 31 will naturally droop down under its own weight or elastic restoring force, and re-cover the sewage outlet 22 to prevent sewage from flowing back into the suction pipe 2.

[0109] Referring to Figures 6-8, according to some embodiments of this application, the anti-backflow component 3 is a flexible component, and both the blocking part 31 and the fixing part 32 are sheet-like. Since both the blocking part 31 and the fixing part 32 are sheet-like and flexible, when the cleaning equipment is working, this helps reduce the resistance to gas flow at the outlet 22. The blocking part 31 moves to the open position of the outlet 22 under the thrust of the airflow, allowing the outlet 22 to open and enabling sewage and gas to be discharged more smoothly through the outlet 22. When the cleaning equipment is not working, this allows the blocking part 31 and the fixing part 32 to fit tightly against the outlet 22, helping to improve the sealing effect of the anti-backflow component 3 at the outlet 22, thereby effectively preventing sewage from flowing back through the outlet 22.

[0110] Referring to Figures 6-8, according to some embodiments of this application, a pre-fold 33 is provided between the blocking part 31 and the fixing part 32. In the direction from the fixing part 32 to the blocking part 31, the blocking part 31 extends obliquely away from the sewage outlet 22. The pre-fold 33 can reduce the resistance of the blocking part 31 to gas and sewage. When the airflow carrying sewage passes through the sewage outlet 22, the blocking part 31 can be pushed open more easily, reducing the resistance to the flow of gas and sewage. Furthermore, when the airflow is small, the pre-fold 33 between the blocking part 31 and the fixing part 32 can prevent the blocking part 31 from covering the sewage outlet 22, facilitating the smooth flow of the airflow carrying sewage out of the sewage outlet 22.

[0111] Referring to Figures 6-8, according to some embodiments of this application, the fixing part 32 and the suction pipe 2 are connected by an adhesive layer, which makes the connection between the fixing part 32 and the suction pipe 2 simple and has strong stability.

[0112] Referring to Figures 6-8, according to some embodiments of this application, the suction pipe 2 includes a suction pipe body 23 and a fixing protrusion 24. The suction pipe body 23 forms a suction port 21 and a discharge port 22. The fixing protrusion 24 is disposed on the outer wall surface of the suction pipe body 23 and is located on the outer periphery of the discharge port 22. The fixing part 32 is fixed to the fixing protrusion 24. The fixing protrusion 24 can provide support and fixation for the fixing part 32, thereby facilitating the fixation of the anti-backflow component 3 onto the suction pipe 2. The fixing part 32, fixed to the fixing protrusion 24, can provide stable support for the blocking part 31. At this time, the blocking part 31 is a free end and can move to the open position of the discharge port 22 according to the airflow thrust at the discharge port 22, or the blocking part 31 can move to the closed position of the discharge port 22 under the action of its own gravity or elastic force.

[0113] Referring to Figures 6-9, according to some embodiments of this application, when the cleaning equipment is upright, the sewage outlet 22 faces the peripheral wall of the housing 1, and the fixing part 32 is connected to the upper side of the shielding part 31 and is located above the sewage outlet 22. When the cleaning equipment is working, the sewage outlet 22 faces the peripheral wall of the housing 1, and the fixing part 32 is located above the sewage outlet 22. The fixing part 32 can provide support and fixation for the shielding part 31. At this time, the shielding part 31 is a free end. When the airflow carrying sewage passes through the sewage outlet 22, under the thrust of the airflow, the shielding part 31 can move relative to the suction pipe 2 to the open position of opening the sewage outlet 22, so that the sewage discharged through the sewage outlet 22 can be discharged more smoothly into the receiving cavity 11 of the housing 1.

[0114] Referring to Figures 5 and 9-12, according to some embodiments of this application, a baffle plate 12 is provided inside the housing 1. The baffle plate 12 is located on the outer periphery of the suction pipe 2 and is spaced apart from the suction pipe 2. At least a portion of the baffle plate 12 is opposite to the sewage outlet 22. The situation where at least a portion of the baffle plate 12 is opposite to the sewage outlet 22 may include the following: for example, a part of the baffle plate 12 may be opposite to the sewage outlet 22; or, for another example, the entire baffle plate 12 may be opposite to the sewage outlet 22.

[0115] When the shielding part 31 is in the open position of the open sewage outlet 22, the shielding part 31 contacts and engages with the baffle plate 12. By providing the baffle plate 12 inside the tank 1, when the shielding part 31 is in the open position of the open sewage outlet 22, the shielding part 31 contacts and engages with the baffle plate 12, which can make the shielding part 31 more stably maintain in the open position of the open sewage outlet 22, so as to avoid the shielding part 31 shaking or moving and increasing the resistance to sewage flow, so that sewage can flow out more smoothly through the sewage outlet 22; and the contact and engagement of the shielding part 31 with the baffle plate 12 can block the gap between the sewage outlet 22 and the peripheral wall of the tank 1, thereby preventing the possibility of sewage overflowing through the gap between the sewage outlet 22 and the peripheral wall of the tank 1 and flowing into other components inside the tank 1.

[0116] Furthermore, the baffle plate 12 can also guide the sewage, causing it to flow towards the receiving cavity 11. It can also perform gas-liquid separation. When the gas flow carrying sewage passes through the sewage outlet 22, the separated liquid can be guided into the receiving cavity 11 through the baffle plate 12, and the separated gas flows out of the sewage tank 100 through the gas flow outlet 13.

[0117] Optionally, the housing 1 includes a shell 14 and a top cover 15. The top cover 15 covers the top of the shell 14, and the air outlet 13 is formed on the top cover 15. The baffle plate 12 can be disposed on the top cover 15 and connected to the lower side of the top cover 15. The baffle plate 12 can be integrally formed with the top cover 15, which can enhance the overall structural strength of the housing 1 to a certain extent and eliminate the assembly steps between the baffle plate 12 and the top cover 15.

[0118] A gas-liquid separation rib 16 can also be provided on the upper cover 15, and the gas-liquid separation rib 16 is located on the lower side of the upper cover 15. The gas-liquid separation rib 16 can play a role in gas-liquid separation. The gas-liquid separation rib 16, the liquid baffle 12, and the upper cover 15 can be integrally formed, which can enhance the overall structural strength of the box 1 and eliminate the assembly steps between the gas-liquid separation rib 16, the liquid baffle 12, and the upper cover 15.

[0119] Referring to Figures 9-12, according to some embodiments of this application, the baffle plate 12 has a clearance opening 121 for avoiding the blocking portion 31. When the blocking portion 31 is in the open position of the open sewage outlet 22, at least a portion of the blocking portion 31 is accommodated in the clearance opening 121. This accommodating at least a portion of the blocking portion 31 in the clearance opening 121 can include, for example, a portion of the blocking portion 31 being accommodated in the clearance opening 121; or, for another example, the entire blocking portion 31 being accommodated in the clearance opening 121.

[0120] The clearance opening 121 allows at least a portion of the shielding part 31 to be accommodated therein, and makes the overall structure of the shielding part 31 and the baffle plate 12 compact. By providing the clearance opening 121 on the baffle plate 12, it can be ensured that the shielding part 31 has sufficient space to move to the open position of the sewage outlet 22, so that sewage and airflow can flow smoothly into the receiving cavity 11 through the sewage outlet 22. Furthermore, the clearance opening 121 can limit the movement of the shielding part 31, allowing the shielding part 31 to move more accurately to the open position of the sewage outlet 22.

[0121] The following describes a wastewater tank 100 according to some embodiments of the present application with reference to Figures 5-12. The wastewater tank 100 is used for cleaning equipment.

[0122] Referring to Figures 5-8, in this embodiment, the wastewater tank 100 includes a tank body 1, a suction pipe 2, and an anti-backflow component 3. The tank body 1 has a receiving cavity 11 for collecting wastewater, and an airflow outlet 13 is formed at the top of the tank body 1. At least a portion of the suction pipe 2 is located inside the tank body 1. The suction pipe 2 has a suction port 21 and a discharge port 22. The discharge port 22 is located inside the tank body 1 and below the airflow outlet 13. The discharge port 22 communicates with the inlet port 112 of the receiving cavity 11, and the receiving cavity 11 connects the discharge port 22 with the airflow outlet 13. The anti-backflow component 3 is located inside the tank body 1 and is used to open and close the discharge port 22. The anti-backflow component 3 is installed on the suction pipe 2 and is located outside the suction pipe 2.

[0123] The anti-backflow component 3 includes a fixing part 32 and a blocking part 31. The anti-backflow component 3 is a flexible component, and both the blocking part 31 and the fixing part 32 are sheet-like. The fixing part 32 is connected to the suction pipe 2 through an adhesive layer. The blocking part 31 is movable relative to the suction pipe 2 to open and close the sewage outlet 22. The blocking part 31 is adapted to move to the open position of the sewage outlet 22 under the action of the airflow flowing out of the sewage outlet 22, and the blocking part 31 is adapted to move to the closed position of the sewage outlet 22 under the action of its own gravity or elastic force.

[0124] The shielding part 31 is a flexible part, and there is a pre-fold 33 between the shielding part 31 and the fixing part 32. In the direction from the fixing part 32 to the shielding part 31, the shielding part 31 extends obliquely away from the sewage outlet 22.

[0125] The housing 1 is equipped with a baffle plate 12, which is located on the outer periphery of the suction pipe 2 and spaced apart from it. At least a portion of the baffle plate 12 is opposite to the outlet 22. When the blocking portion 31 is in the open position with the outlet 22 open, the blocking portion 31 and the baffle plate 12 are in contact and engaged. The baffle plate 12 has a clearance opening 121 for avoiding the blocking portion 31. When the blocking portion 31 is in the open position with the outlet 22 open, at least a portion of the blocking portion 31 is accommodated in the clearance opening 121.

[0126] When the cleaning equipment is working, the suction pipe 2 sucks in sewage through the suction port 21, and the airflow carrying sewage flows to the discharge port 22. This airflow will generate a thrust on the shield 31, so that the shield 31 moves to the open position of opening the discharge port 22, so that the discharge port 22 opens, making it easier for sewage to be discharged from the discharge port 22 into the receiving cavity 11.

[0127] When the cleaning equipment is not in operation, for example when the cleaning equipment is lying flat with the rear of the cleaning equipment facing down and the sewage outlet 22 facing up, the shield 31 is located above the sewage outlet 22. At this time, the shield 31 moves to the position of closing the sewage outlet 22 under its own gravity or elastic force, thereby preventing sewage backflow.

[0128] Referring to Figures 5, 6, and 9, a cleaning device according to another embodiment of this application includes a body, a wastewater tank 100 according to the above embodiments of this application, a floor brush, and a power assembly. The wastewater tank 100 is installed on the body, the floor brush is connected to the bottom of the body, the bottom of the floor brush has a suction port, and the top of the floor brush has a first connection port, which is connected to the suction port 21 and the first connection port connects the suction port and the suction port 21. The power assembly is installed on the body and is located on the upper side of the wastewater tank 100. The power assembly has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment. The power assembly is used to drive the airflow from the suction port through the floor brush, the suction pipe 2, the housing 1, and the power assembly.

[0129] The main body of the cleaning equipment provides support and fixation for the wastewater tank 100, the floor brush, and the power unit. The floor brush is located at the bottom of the main body and has a suction port at its bottom for easy suction of wastewater from the work surface. The first connection port is connected to the suction port 21, allowing wastewater from the work surface sucked up by the suction port to flow into the suction port 21 through the first connection port, then through the suction pipe 23 to the discharge port 22, and finally discharged into the receiving cavity 11. Furthermore, the air entering the cleaning equipment from the suction port can flow into the suction port 21 through the first connection port, then through the suction pipe 23 to the discharge port 22, and finally discharged into the receiving cavity 11. Due to the characteristics of the airflow itself, the airflow can flow upward into the airflow outlet 13. Since the power unit has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment, the airflow at the airflow outlet 13 can be discharged into the external environment through the second connection port and the exhaust port.

[0130] When the cleaning equipment is in operation, the floor brush of the cleaning equipment sucks up the sewage on the working surface and flows it into the sewage tank 100. The airflow carrying sewage undergoes gas-liquid separation in the sewage tank 100. The separated liquid is stored in the sewage tank 100, and the separated gas flows out of the sewage tank 100. The power unit can drive the airflow through the airflow outlet 13 to the exhaust port, and then discharge it to the external environment through the exhaust port.

[0131] According to the cleaning equipment of this application embodiment, by providing the above-mentioned sewage tank 100, and by providing an anti-backflow component 3 for opening and closing the sewage outlet 22 in the sewage tank 100, when the cleaning equipment stops working, for example, when the cleaning equipment is tilted, especially when the cleaning equipment is lying flat, the anti-backflow component 3 can close the sewage outlet 22, so as to effectively prevent sewage from flowing back from the sewage outlet 22 through the suction pipe 2 into the floor brush and contaminating the floor brush or even the ground.

[0132] Please refer to Figure 13, which is a schematic diagram of the overall structure of an embodiment of the cleaning equipment claimed.

[0133] Another embodiment of this application provides a cleaning device 200. The cleaning device 200 includes a cleaning module 220, a body 210, and a wastewater tank 100. The body 210 is rotatably mounted on the cleaning module 220, and the wastewater tank 100 is detachably mounted on the body 210. The wastewater tank 100 adopts the wastewater tank 100 of any of the above embodiments. The cleaning module 220 is located at the lower end of the body 210 and is typically used to move over the surface to be cleaned for cleaning work. The body 210 can rotate relative to the cleaning module 220 to adapt to different cleaning scenarios. For example, when cleaning hard-to-reach areas such as under beds and sofas, the body 210 needs to be laid flat. Therefore, by rotating the body 210 relative to the cleaning module 220, the cleaning device 200 has at least an upright cleaning state, a flat cleaning state, and a tilted cleaning state between the upright and flat cleaning states, which facilitates the cleaning device 200 in cleaning different areas. As the body 210 rotates, the sewage tank 100 can be in an upright position, a flat position, or an inclined position.

[0134] The cleaning equipment 200 can be a floor scrubber or other cleaning equipment containing a wastewater tank 100. Specifically, the cleaning module 220 can be a floor brush module.

[0135] The wastewater tank 100 of the cleaning device 200 of this application is equipped with a baffle plate 130, which extends at least partially between the detection component 120 and the second side 102 of the accommodating cavity 11. This allows the wastewater tank 100 to share a single set of detection components 120 for full water detection in different cleaning postures, thereby reducing costs, minimizing space occupation, and preventing interference between different sets of detection components 120, thus reducing false alarm rates. Furthermore, by setting the baffle plate 130, the full water detection sensitivity of the detection component 120 in this application is effectively improved. Compared to existing solutions where the wastewater tank 100 needs to accommodate full water detection, resulting in increased overall volume, the wastewater tank 100 of this application can reduce its volume while maintaining a fixed required wastewater volume, improving its volume utilization rate. The cleaning device 200 using the wastewater tank 100 of this application is therefore lighter and more flexible.

[0136] Furthermore, the wastewater tank 100 also includes a suction pipe 2 and an anti-backflow component 3. An airflow outlet 13 is formed at the top of the tank body 1. At least a portion of the suction pipe 2 is located within the tank body 1. The suction pipe 2 has a suction port 21 and a discharge port 22. The discharge port 22 is located inside the tank body 1 and below the airflow outlet 13. The discharge port 22 communicates with the inlet port 112 of the receiving cavity 11, and the receiving cavity 11 connects the discharge port 22 with the airflow outlet 13. The anti-backflow component 3 is located inside the tank body 1 and is used to open and close the discharge port 22. The anti-backflow component 3 is installed on the suction pipe 2 and is located outside the suction pipe 2.

[0137] The cleaning equipment 200 also includes a power unit. A floor brush is connected to the bottom of the body 210. The bottom of the floor brush has a suction port, and the top of the floor brush has a first connection port. The first connection port is connected to the suction port 21 and the first connection port connects the suction port and the suction port 21. The power unit is installed on the body 210 and is located on the upper side of the wastewater tank 100. The power unit has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment. The power unit is used to drive the airflow from the suction port through the floor brush, the suction pipe 2, the tank 1, and the power unit.

[0138] The body 210 is the main part of the cleaning equipment 200, which provides support and fixation for the wastewater tank 100, the floor brush, and the power unit. The floor brush is located at the bottom of the body 210 and has a suction port at the bottom, which facilitates the suction of wastewater from the work surface. The first connection port is connected to the suction port 21 and the first connection port connects the suction port and the suction port 21. The sewage from the working surface sucked by the suction port can flow into the suction port 21 through the first connection port, and then flow through the suction pipe body 23 to the discharge port 22. The sewage is discharged through the discharge port 22 to the inlet port 112 of the accommodating cavity 11 and enters the accommodating cavity 11. In addition, the gas entering the cleaning equipment 200 from the suction port can flow into the suction port 21 through the first connection port, and then flow through the suction pipe body 23 to the discharge port 22. The gas is discharged through the discharge port 22 into the accommodating cavity 11. Due to the characteristics of the airflow itself, the airflow can flow upward into the airflow outlet 13. Since the power component has a second connection port connected to the airflow outlet 13 and an exhaust port connected to the external environment, the airflow at the airflow outlet 13 can be discharged to the external environment through the second connection port and the exhaust port.

[0139] When the cleaning equipment 200 is working, the floor brush of the cleaning equipment 200 sucks up the sewage on the working surface and flows it into the sewage tank 100. The airflow carrying sewage undergoes gas-liquid separation in the sewage tank 100. The separated liquid is stored in the sewage tank 100, and the separated gas flows out of the sewage tank 100. The power component can drive the airflow through the airflow outlet 13 to the exhaust port, and then discharge it to the external environment through the exhaust port.

[0140] According to the embodiments of this application, the cleaning equipment 200 is equipped with the aforementioned wastewater tank 100. The wastewater tank 100 is equipped with an anti-backflow component 3 for opening and closing the wastewater outlet 22. When the cleaning equipment 200 stops working, for example, when the cleaning equipment 200 is tilted, especially when the cleaning equipment 200 is lying flat, the anti-backflow component 3 can close the wastewater outlet 22 to effectively prevent wastewater from flowing back from the wastewater outlet 22 through the suction pipe 2 into the floor brush and contaminating the floor brush or even the ground.

[0141] Please refer to Figure 14, which is a schematic flowchart of one embodiment of the wastewater tank level detection method of this application. Another embodiment of this application provides a wastewater tank level detection method, applied to the cleaning equipment in any of the above embodiments. The cleaning equipment has a control device electrically connected to the detection component to control the cleaning equipment to implement the wastewater tank level detection method in any of the following embodiments.

[0142] The liquid level detection method for the wastewater tank in this application includes:

[0143] S10: Obtain the trigger signal of the detection component.

[0144] Wastewater tanks are typically designed with a preset storage capacity. When the wastewater level exceeds this capacity, there is a risk of overflowing and damaging the blower module of the cleaning equipment. Therefore, the wastewater tank is equipped with a detection component located within its containment cavity to continuously monitor changes in the wastewater level, allowing the cleaning equipment to respond promptly.

[0145] Different types of detection components used in cleaning equipment generate trigger signals in different ways.

[0146] Optionally, the detection component may emit a signal only when triggered by sewage, in which case the signal acquired by the control device is the trigger signal. Alternatively, the detection component may generate a signal in real time, and the signal of the detection component will change as it senses changes in the amount of sewage in the sewage tank. When the amount of sewage reaches a certain level, the detection component is triggered, and the signal generated by the detection component is the trigger signal. In this case, acquiring the trigger signal of the detection component includes: acquiring the signal of the detection component and determining the signal that meets the threshold as the trigger signal.

[0147] Specifically, the detection component is an electrode-type liquid level sensor, which includes two probe bodies. The trigger signal is the conduction signal generated when the two probe bodies are energized by sewage; specifically, it can be manifested as the electrical signal value of the detection component reaching a threshold value after being energized by sewage.

[0148] Specifically, the detection component can also be other types of sensors such as photoelectric level sensors and ultrasonic level sensors. Utilizing principles such as electromagnetic induction, photoelectric effect, and ultrasound, when sewage flows into the detection component's sensing range, the detection component can output a relevant electrical signal, thereby detecting the amount of sewage in the sewage tank.

[0149] S20: Determine whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal.

[0150] The trigger signal can determine whether the amount of sewage in the sewage tank has reached the preset storage capacity, so that the cleaning equipment can give timely feedback when the amount of sewage in the sewage tank reaches the preset storage capacity.

[0151] S30: When the sewage volume in the sewage tank reaches the preset storage capacity, control the cleaning equipment to stop cleaning and issue a prompt.

[0152] In some embodiments, if the sewage volume in the sewage tank reaches a preset storage capacity and there is a risk of sewage overflow, the cleaning equipment can be controlled to stop cleaning and issue a prompt to remind the user to clean the sewage tank in a timely manner in order to prevent the sewage from overflowing and damaging the blower module.

[0153] Because the wastewater tank of the cleaning equipment in this application is equipped with a baffle plate, and the baffle plate extends at least partially between the detection component and the second side of the receiving cavity, the wastewater tank can share a set of detection components to achieve liquid level detection in different positions. This avoids interference between different sets of detection components, and reduces the number of detection components, thus lowering the probability of detection accuracy being affected by dirt and reducing the overall false alarm rate. The detection sensitivity and accuracy of the wastewater tank liquid level detection method in this application are effectively improved.

[0154] Since the wastewater tank level detection method of this application uses a set of detection components to realize the wastewater tank level detection under different cleaning postures, the following will describe in detail the wastewater tank level detection process of the same set of probe components under different cleaning postures with specific embodiments.

[0155] In some embodiments, the cleaning device has at least a first cleaning posture, which includes a lying-down cleaning posture, in which the wastewater tank is in a lying-down state. The probe assembly includes two probe bodies spaced apart. Step S11, obtaining the trigger signal of the probe assembly, includes:

[0156] The system acquires the trigger signal generated after the two probe bodies are connected by sewage. Specifically, when the cleaning equipment is in its first cleaning posture, the sewage, guided by a baffle plate, forms a surge that flows towards the probe bodies, thus connecting the two probe bodies. Once the two probe bodies are connected, a trigger signal is generated, which is acquired by the control device.

[0157] When the cleaning equipment is in the first cleaning posture, such as lying down, the water baffle guides the direction of sewage movement to form a surge that flows towards the probe assembly, thereby improving the conductivity of the two probe bodies and enhancing the sensitivity of sewage level detection when the cleaning equipment is in the lying down cleaning posture.

[0158] Furthermore, the cleaning equipment also has a second cleaning posture, which includes an upright cleaning posture, in which the wastewater tank is in an upright state. Step S11, obtaining the trigger signal of the detection component, further includes:

[0159] The system acquires the trigger signal generated when the two probe bodies are connected by sewage. Specifically, when the cleaning equipment is in the second cleaning posture, the sewage level in the sewage tank rises to a point where the two probe bodies are connected, thus generating the trigger signal. The control device acquires this trigger signal after the two probe bodies are connected.

[0160] When the cleaning equipment is in the second cleaning posture, such as the upright cleaning posture, the amount of sewage in the sewage tank increases, and the sewage height rises normally, which can conduct the two probe bodies to realize sewage level detection.

[0161] Understandably, cleaning equipment has different cleaning postures, favoring both upright and lying positions. The risk of wastewater overflow varies with these postures, therefore the preset water storage capacity of the wastewater tank differs, and this preset capacity is related to the cleaning posture. The preset water storage capacity when the cleaning equipment is in a lying position is defined as the first water storage capacity, and the preset water storage capacity when the cleaning equipment is in an upright position is defined as the second water storage capacity, with the second water storage capacity being higher than the first.

[0162] The wastewater tank level detection method of this application, by installing a baffle plate and probe assembly inside the wastewater tank, can accurately and sensitively detect when the wastewater volume in the tank reaches the corresponding preset storage volume, regardless of the cleaning equipment's cleaning posture. Specifically, it can promptly detect when the wastewater volume in the tank reaches the first storage volume when the cleaning equipment is in a horizontal cleaning posture and provide feedback; simultaneously, it can promptly detect when the wastewater volume in the tank reaches the second storage volume when the cleaning equipment is in an upright cleaning posture and provide feedback.

[0163] The wastewater tank can be equipped with horizontal water level markings corresponding to a first water storage capacity and vertical water level markings corresponding to a second water storage capacity, allowing users to observe the amount of wastewater in the tank. In some embodiments, determining whether the amount of wastewater in the tank has reached a preset storage capacity based on a trigger signal includes: acquiring the trigger signal from the detection component to determine that the amount of wastewater in the tank has reached the preset storage capacity. This method has high sensitivity and a high trigger frequency.

[0164] Alternatively, in order to further improve the accuracy of judging the amount of sewage in the sewage tank, in some other embodiments, the trigger signal can be further analyzed to determine whether the amount of sewage in the sewage tank has reached the preset storage capacity.

[0165] Please refer to Figure 15, which is a flowchart illustrating another embodiment of the wastewater tank level detection method of this application. In some further embodiments, determining whether the wastewater volume in the wastewater tank has reached the preset storage capacity based on a trigger signal includes: determining whether the wastewater volume in the wastewater tank has reached the preset storage capacity based on the duration of the trigger signal. Specifically, this includes the following steps:

[0166] S21: Determine whether the duration of the trigger signal has reached the preset duration.

[0167] Besides triggering the detection component when the sewage volume in the tank is large, the surge caused by the oscillation of sewage within the tank during significant movement of the cleaning equipment may also occasionally trigger the detection component. However, there is no risk of sewage overflowing and damaging the blower module. Therefore, to improve the accuracy of sewage tank level detection and reduce the frequency of sewage tank cleaning by users, the duration of the trigger signal can be analyzed to determine whether the sewage level in the tank has reached the preset storage capacity.

[0168] S22: If the duration of the trigger signal reaches the preset duration, determine that the amount of sewage in the sewage tank has reached the preset storage capacity.

[0169] If the duration of the trigger signal reaches the preset duration, it can be determined that the sewage continuously triggers the detection component, thereby determining that the amount of sewage in the sewage tank has reached the preset storage capacity.

[0170] S23: If the duration of the trigger signal does not reach the preset duration, it is determined that the amount of sewage in the sewage tank has not reached the preset storage capacity.

[0171] If the duration of the trigger signal does not reach the preset duration, it can be determined that the sewage accidentally triggered the detection component, and the amount of sewage in the sewage tank has not reached the preset storage capacity. The trigger signal from the detection component can then be continuously acquired, and the determination of whether the amount of sewage in the sewage tank has reached the preset storage capacity can be based on the trigger signal.

[0172] Therefore, please continue to refer to Figure 16, which is a sub-flow diagram of an embodiment of the liquid level detection method for cleaning equipment of this application. In some embodiments, before determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal, the liquid level detection method further includes:

[0173] S41: Determine the cleaning posture of the cleaning equipment.

[0174] Determine the cleaning posture of the cleaning equipment. The cleaning equipment has at least a first cleaning posture and a second cleaning posture. If the angle between the machine body and the horizontal direction falls within the first angle range, the cleaning equipment can be confirmed to be in the first cleaning posture. If the angle between the machine body and the horizontal direction falls within the second angle range, the cleaning equipment can be confirmed to be in the second cleaning posture. The first angle range is smaller than the second angle range.

[0175] Since the first included angle interval is smaller than the second included angle interval, it means that in the first cleaning posture, the cleaning equipment is more horizontal compared to the second cleaning posture. At this time, the maximum water storage capacity of the sewage tank is relatively smaller, and the risk of sewage overflowing from the sewage tank is greater.

[0176] Specifically, the first cleaning posture is the horizontal position of the cleaning equipment, in which the wastewater tank is lying flat. The second cleaning posture is the vertical position of the cleaning equipment, in which the wastewater tank is upright. The oblique cleaning posture of the cleaning equipment can be classified as either the first or second cleaning posture based on the angle of inclination of the machine body relative to the horizontal direction.

[0177] Of course, in order to further refine the classification of liquid level detection under different cleaning postures, more tiered cleaning postures such as the third cleaning posture can be set, with the third included angle interval located between the first included angle interval and the second included angle interval.

[0178] Specifically, the cleaning posture of the cleaning equipment can be determined by sensing devices such as angle sensors and gyroscopes installed on the body. In some embodiments, the cleaning equipment also includes a cleaning module, such as a floor brush module. The body is rotatably mounted on the cleaning module, and the cleaning module and / or the body is equipped with microswitches. When the body rotates relative to the cleaning module to a certain angle, the microswitches can be triggered, thereby determining the cleaning posture of the cleaning equipment.

[0179] S42: Determine the corresponding preset duration based on the cleaning posture of the cleaning equipment, wherein the preset duration corresponding to the first cleaning posture is less than the preset duration corresponding to the second cleaning posture.

[0180] Because the preset water storage capacity of the wastewater tank varies under different cleaning states, and the risk of wastewater overflow also differs, the preset condition for confirming that the wastewater tank has reached the preset water storage capacity should be correspondingly lower in cleaning states where wastewater is more likely to overflow. Therefore, the preset time corresponding to the first cleaning state is shorter than the preset time corresponding to the second cleaning state.

[0181] By reducing the preset duration of the first cleaning state where sewage is more likely to overflow, the sensitivity of the liquid level detection can be improved, and damage to the blower module can be avoided. At the same time, the preset duration of the second cleaning state where sewage is relatively less likely to overflow is longer, which can reduce the situation where sewage accidentally triggers the detection component and is misjudged when the amount of sewage in the sewage tank is small, thus improving the accuracy of liquid level detection.

[0182] Please refer to Figure 17, which is a flowchart illustrating another embodiment of the wastewater tank level detection method of this application. In some further embodiments, determining whether the wastewater volume in the wastewater tank has reached a preset storage capacity based on a trigger signal includes: determining whether the wastewater volume in the wastewater tank has reached a preset storage capacity based on the generation frequency of the trigger signal. Specifically, this includes the following steps:

[0183] S24: Determine whether the frequency of the trigger signal generation reaches the preset frequency.

[0184] Besides the risk of overflow when the sewage tank is large, the surge caused by the turbulence of sewage during rapid and violent movement of the cleaning equipment also poses a risk of overflowing and damaging the blower module. Therefore, to improve the sensitivity and accuracy of sewage tank level detection, the frequency of trigger signal generation can be analyzed to determine whether the sewage volume in the tank has reached the preset storage capacity.

[0185] S25: If the frequency of the trigger signal reaches the preset frequency, determine that the amount of sewage in the sewage tank has reached the preset storage capacity.

[0186] If the frequency of the trigger signal reaches the preset frequency, it can be determined that the sewage frequently triggers the detection component, the sewage in the sewage tank vibrates violently, and the resulting surge also has the risk of overflowing and damaging the blower module. It can also be determined that the amount of sewage in the sewage tank has reached the preset storage capacity, so as to make a feedback.

[0187] S26: If the frequency of the trigger signal generation does not reach the preset frequency, it is determined that the amount of sewage in the sewage tank has not reached the preset storage capacity.

[0188] If the frequency of the trigger signal generation does not reach the preset frequency, it can be determined that the sewage accidentally triggered the detection component, and the amount of sewage in the sewage tank has not reached the preset storage capacity. The trigger signal from the detection component can then be continuously acquired, and the determination of whether the amount of sewage in the sewage tank has reached the preset storage capacity can be based on the trigger signal.

[0189] Similarly, the corresponding preset frequency can be determined based on the cleaning posture of the cleaning equipment.

[0190] It should be noted that determining whether the sewage volume in the sewage tank has reached the preset storage capacity based on the duration of the trigger signal and determining whether the sewage volume in the sewage tank has reached the preset storage capacity based on the frequency of the trigger signal can be done either one or both.

[0191] Please refer to Figure 18, which is a schematic diagram of a framework of an embodiment of the computer-readable storage medium of this application.

[0192] Another embodiment of this application provides a computer-readable storage medium 40 storing program data thereon, which, when executed by a processor, implements the liquid level detection method for a sewage tank according to any of the above embodiments.

[0193] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus implementations described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0194] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0195] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0196] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium 40. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium 40 and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium 40 includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0197] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0198] In the description of this application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0199] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0200] In the description of this application, "multiple" means two or more.

[0201] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0202] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0203] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 may be combined in any suitable manner in one or more embodiments or examples.

[0204] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sump tank characterized in that, include: The tank has a accommodating cavity for containing sewage and an inlet communicating with the accommodating cavity. The accommodating cavity has a first side and a second side that are arranged opposite to each other. When the sewage tank is in a flat position, the first side is located above the second side. The detection component is disposed within the accommodating cavity; A baffle plate is disposed within the receiving cavity and extends at least partially between the detection component and the second side. The baffle plate is used to guide sewage to surge toward the detection component to trigger the detection component.

2. The sump tank of claim 1, wherein, The detection assembly includes two probe bodies spaced apart, and the baffle plate includes two baffle parts spaced apart. The baffle parts are arranged one-to-one with the probe bodies, and each baffle part extends at least between the corresponding probe body and the second side. The two baffle parts guide the sewage to surge toward the probe bodies so that the sewage can pass through the two probe bodies.

3. The sump tank of claim 2, wherein, Each of the water-retaining portions extends to abut against the side of the corresponding probe body facing the second side.

4. The sump tank of claim 3, wherein, Each probe body includes a probe carrier and a detection electrode, wherein the detection electrode is disposed on the probe carrier and exposed outside the probe carrier; The width of the water-blocking part on the side that abuts against the probe body is greater than or equal to the width of the probe carrier; or, the width of the water-blocking part on the side that abuts against the probe body is greater than or equal to the width of the detection electrode.

5. The sump tank of claim 2, wherein, The accommodating cavity also has a first end and a second end that are arranged opposite to each other. When the sewage tank is in an upright state, the first end is located above the second end, and the sewage inlet is located at the first end.

6. The sump tank of claim 5, wherein, The water baffle also includes a water baffle strip, which connects the two water baffle portions and extends from the second side toward the first side.

7. The sump tank of claim 5, wherein, The wastewater tank also includes: An mounting plate is disposed within the accommodating cavity, located between the sewage inlet and the second end. The outer peripheral wall of the mounting plate fits into the cavity wall of the accommodating cavity, and the mounting plate has a communication opening. A detection component extends through the mounting plate toward the second end, located between the communication opening and the first side. A baffle plate is located on the side of the mounting plate facing the second end, extending from the edge of the communication opening toward the second side toward the detection component.

8. The sump tank of claim 7, wherein, The water baffle is integrally formed with the mounting plate; the mounting plate is snapped into the detection component.

9. The sump tank of claim 5, wherein, In the direction from the first end to the second end, the baffle is located at one-third to two-thirds of the accommodating cavity; and / or, in the direction from the first side to the second side, the detection component is located at one-third to two-thirds of the accommodating cavity.

10. The sump tank of claim 1, wherein, An airflow outlet is formed at the top of the tank, and the sewage tank further includes: A suction pipe fitting, at least a portion of which is located within the housing, the suction pipe fitting having a suction port and a discharge port, the discharge port being located within the housing and below the airflow outlet, the discharge port communicating with the inlet of the accommodating cavity, and the accommodating cavity also communicating with the discharge port and the airflow outlet; An anti-backflow component is located inside the housing and is used to open and close the sewage outlet.

11. The sump tank of claim 10, wherein, The backflow prevention component includes a blocking part, which is adapted to move to the open position of opening the sewage outlet under the action of the airflow flowing out of the sewage outlet, and the blocking part is adapted to move to the closed position of closing the sewage outlet under the action of its own gravity or elastic force.

12. The sump tank of claim 11, wherein, The shielding part is a flexible part.

13. The sump tank of claim 12, wherein, The shielding part is a soft rubber part.

14. The sump tank of claim 11, wherein, The shielding part is sheet-like.

15. The sump tank of claim 11, wherein, When the cleaning device is lying flat, the rear side of the cleaning device faces downward, the sewage outlet faces upward, and the shielding part is located above the sewage outlet.

16. The sump tank according to any one of claims 10-15, wherein, The anti-backflow component is installed on the suction pipe and is located outside the suction pipe.

17. The sump tank of claim 16, wherein, The backflow prevention component includes a fixing part and a blocking part. The fixing part is fixed to the suction pipe, and the blocking part is movable relative to the suction pipe to open and close the sewage outlet.

18. The sump tank of claim 17, wherein, The anti-backflow component is a flexible component, and both the shielding part and the fixing part are sheet-like.

19. The sump tank of claim 18, wherein, There is a pre-fold between the shielding part and the fixing part, and in the direction from the fixing part to the shielding part, the shielding part extends obliquely away from the sewage outlet.

20. The sump tank of claim 17, wherein, The fixing part is connected to the suction pipe through an adhesive layer.

21. The sump tank of claim 17, wherein, The suction pipe includes a suction pipe body and a fixing protrusion. The suction pipe body has a suction port and a discharge port. The fixing protrusion is located on the outer wall of the suction pipe body and on the outer periphery of the discharge port. The fixing part is fixed to the fixing protrusion.

22. The sump tank of claim 17, wherein, When the cleaning device is upright, the waste outlet faces the peripheral wall of the housing, and the fixing part is connected to the upper side of the shielding part and located above the waste outlet.

23. The sump tank of claim 22, wherein, The box is equipped with a baffle plate, which is located on the outer periphery of the suction pipe and spaced apart from the suction pipe. At least a portion of the baffle plate is opposite to the sewage outlet. When the blocking part is in the open position where the sewage outlet is open, the blocking part is in contact with the baffle plate.

24. The effluent tank of claim 23, wherein, The liquid baffle plate has a clearance opening for avoiding the shielding part. When the shielding part is in the open position where the sewage outlet is opened, at least a portion of the shielding part is accommodated in the clearance opening.

25. A cleaning apparatus, characterized by The device includes a cleaning module, a body, and a wastewater tank. The body is rotatably mounted on the cleaning module, and the wastewater tank is detachably mounted on the body. The wastewater tank is the type of wastewater tank described in any one of claims 1-24.

26. A method of detecting the level of a sump tank, characterized by, The liquid level detection method, applied to a wastewater tank according to any one of claims 1-24 or to a cleaning device according to claim 25, comprises: Obtain the trigger signal of the detection component; The trigger signal is used to determine whether the amount of sewage in the sewage tank has reached the preset storage capacity.

27. The liquid level detection method according to claim 26, characterized by, The cleaning device has at least a first cleaning posture, the first cleaning posture including a lying-down cleaning posture; the detection component includes two probe bodies spaced apart, and the trigger signal for acquiring the detection component includes: The trigger signal generated after the two probe bodies are connected by sewage is obtained; wherein, when the cleaning equipment is in the first cleaning posture, the sewage is guided by the baffle plate to form a surge towards the probe bodies and connect the two probe bodies to generate the trigger signal.

28. The liquid level detection method according to claim 27, characterized in that, The cleaning device also has a second cleaning posture, which includes an upright cleaning posture; wherein, when the cleaning device is in the second cleaning posture, the sewage level in the sewage tank rises to the point that it connects the two probe bodies to generate the trigger signal.

29. The liquid level detection method according to claim 28, characterized in that, The preset water storage capacity is related to the cleaning posture of the cleaning equipment. The preset water storage capacity when the cleaning equipment is in a lying cleaning posture is the first water storage capacity, and the preset water storage capacity when the cleaning equipment is in an upright cleaning posture is the second water storage capacity. The second water storage capacity is higher than the first water storage capacity.

30. The liquid level detection method according to claim 28, wherein The step of determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal includes: Determine whether the duration of the trigger signal has reached a preset duration; If the duration of the trigger signal reaches the preset duration, it is determined that the amount of sewage in the sewage tank has reached the preset storage capacity.

31. The liquid level detection method according to claim 30, wherein Before determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal, the liquid level detection method further includes: Confirm the cleaning posture of the cleaning equipment; The preset duration is determined according to the cleaning posture of the cleaning device, wherein the preset duration corresponding to the first cleaning posture is less than the preset duration corresponding to the second cleaning posture.

32. The liquid level detection method according to claim 26, wherein The step of determining whether the amount of sewage in the sewage tank has reached the preset storage capacity based on the trigger signal includes: Determine whether the generation frequency of the trigger signal reaches a preset frequency; If the frequency of the trigger signal reaches the preset frequency, it is determined that the amount of sewage in the sewage tank has reached the preset storage capacity.

33. The liquid level detection method according to any one of claims 26-32, wherein, The liquid level detection method further includes: Once the amount of sewage in the sewage tank reaches the preset storage capacity, the cleaning equipment is controlled to stop cleaning and a prompt is issued.

34. A computer-readable storage medium, characterized in that, The storage medium stores program data that can be executed to implement the liquid level detection method as described in any one of claims 26-33.

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