Sewage tank for cleaning equipment, cleaning equipment and control method

Abstract

The invention provides a sewage tank for cleaning equipment, the cleaning equipment and a control method, the sewage tank comprises a sewage port, an airflow port and a defoaming partition plate, the sewage port is in fluid communication with a sewage collecting structure outside the sewage tank, and the airflow port is in fluid communication with the defoaming partition plate. The sewage port is used for discharging the sewage collected by the sewage collecting structure to the sewage tank and / or discharging the sewage in the sewage tank, and the sewage port is arranged close to the bottom of the sewage tank; the airflow port is in fluid communication with a power source outside the sewage tank, and the power source is used for forming negative pressure in the sewage tank through the airflow port so that sewage can flow in from the sewage port and / or pressurizing the interior of the sewage tank so that the sewage can flow out from the sewage port; the defoaming partition plate is located on a fluid channel between the sewage port and the airflow port, and the defoaming partition plate is configured to enable the size and / or the number of bubbles in the sewage to be reduced after the bubbles penetrate through the defoaming partition plate. Bubbles in the sewage tank can be effectively filtered.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of self-walking equipment, in particular to a sewage tank for cleaning equipment, a cleaning equipment and a control method. BACKGROUND

[0002] Cleaning equipment is increasingly widely used in cleaning of homes and workplaces. The use of cleaning equipment liberates human hands and brings more and more convenience to people's life. Common cleaning equipment includes a sweeping robot, a scrubber, a sweeping and mopping all-in-one machine, etc.

[0003] The existing cleaning equipment with mopping function usually includes a clean water tank and a sewage tank. The clean water tank provides clean water to the ground, and the sewage tank collects and stores sewage in the cleaning equipment. After the sewage tank is full or mopping is finished, the sewage is automatically or manually discharged to a designated position. SUMMARY

[0004] The purpose of the present disclosure is to provide a sewage tank for cleaning equipment, a cleaning equipment and a control method. Specifically as follows:

[0005] The present disclosure provides a sewage tank for cleaning equipment, comprising a sewage port, an airflow port and a defoaming partition plate, wherein,

[0006] The sewage port is in fluid communication with a sewage collection structure outside the sewage tank. The sewage port is used to discharge the sewage collected by the sewage collection structure to the sewage tank and / or to discharge the sewage in the sewage tank. The sewage port is arranged close to the bottom of the sewage tank.

[0007] The airflow port is in fluid communication with a power source outside the sewage tank. The power source is used to form a negative pressure in the sewage tank through the airflow port to allow the sewage to flow from the sewage port and / or to increase the pressure in the sewage tank to allow the sewage to flow out of the sewage port.

[0008] The defoaming partition plate is located on the fluid passage between the sewage port and the airflow port. The defoaming partition plate is configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming partition plate.

[0009] Optionally, the defoaming partition plate comprises:

[0010] A partition plate body configured to divide the sewage tank into multiple spaces.

[0011] A plurality of defoaming holes distributed on one side of the partition plate body close to the top of the sewage tank. The plurality of defoaming holes are configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming holes.

[0012] Optionally, the defoaming partition plate further comprises:

[0013] A communication opening is arranged on one side of the partition body close to the bottom of the sewage tank, and is configured to communicate the sewage in the plurality of spaces.

[0014] Optionally, the plurality of defoaming holes are arranged to gradually increase in aperture from bottom to top.

[0015] Optionally, the number of the defoaming partitions is greater than or equal to 2.

[0016] Optionally, the defoaming partitions are arranged in the sewage tank in a substantially vertical direction.

[0017] Optionally, the defoaming partition further comprises:

[0018] A valve assembly configured to close or open the air flow port.

[0019] Optionally, the valve assembly comprises:

[0020] A piston configured to rotate within a preset angle range to switch between the states of closing or opening the air flow port.

[0021] A connecting rod connected to the piston and configured to drive the piston to rotate within the preset angle range.

[0022] Optionally, the valve assembly comprises:

[0023] A driving unit configured to drive the valve assembly to rotate within the preset angle range to switch between the states of closing or opening the air flow port.

[0024] Optionally, the defoaming partition further comprises:

[0025] A sensor assembly configured to trigger the valve assembly to close the air flow port when the sensor assembly is triggered.

[0026] Optionally, the sensor assembly comprises:

[0027] A Hall element arranged on the top of the sewage tank.

[0028] A floating ball arranged in the sewage tank and moving towards the Hall element as the sewage liquid level rises.

[0029] When the distance between the floating ball and the Hall element reaches a preset threshold, the sensor assembly is triggered.

[0030] The present disclosure also provides a cleaning device comprising the sewage tank for cleaning device as described in any one of the preceding embodiments.

[0031] Optionally, the cleaning device further comprises a mopping module configured to lower when performing a mopping task and to raise when the mopping task is completed, wherein the mopping module is connected to a piston that closes the air flow port through a connecting rod, when the mopping module lowers, the piston is driven to open the air flow port through the connecting rod, and when the mopping module raises, the piston is driven to close the air flow port through the connecting rod.

[0032] The present disclosure further provides a control method of the cleaning device as described above, the method comprising:

[0033] sucking air in the sewage tank by the power source to form a negative pressure in the sewage tank;

[0034] in response to the negative pressure formed in the sewage tank, sewage collected by the sewage collection structure is discharged into the sewage tank through the sewage port, and the volume and / or the number of air bubbles in the sewage are reduced after passing through the defoaming partition.

[0035] Optionally, the method further comprises:

[0036] when the sensor assembly in the sewage tank is triggered, the mopping module of the cleaning device is raised, and at the same time, the air flow port is closed and the power source stops sucking air.

[0037] Optionally, the method further comprises:

[0038] when the sewage tank of the cleaning device needs to be drained, the mopping module of the cleaning device is lowered;

[0039] increasing the pressure in the sewage tank by the power source through a reversing valve to allow sewage to flow out of the sewage port.

[0040] Optionally, the method further comprises:

[0041] the mopping module of the cleaning device is lowered, the mopping module drives the piston to open the air flow port through the connecting rod, and the power source sucks air in the sewage tank through the air flow port to form a negative pressure in the sewage tank.

[0042] Optionally, when the sewage tank of the cleaning device needs to be drained, the mopping module of the cleaning device is lowered, and the pressure in the sewage tank is increased by the power source through a reversing valve to allow sewage to flow out of the sewage port.

[0043] When the wastewater tank of the cleaning equipment needs to be drained, the mopping module of the cleaning equipment is lowered. The mopping module drives the piston through the connecting rod to open the air outlet. The reversing valve causes the power source to blow air into the wastewater tank through the air outlet, thereby pressurizing the wastewater tank so that the wastewater can flow out from the wastewater outlet.

[0044] The above-described solutions of the embodiments of this disclosure have at least the following beneficial effects:

[0045] The wastewater tank for cleaning equipment provided in this embodiment has an antifoaming baffle installed on the fluid channel between the wastewater outlet and the airflow outlet of the wastewater tank. The antifoaming baffle reduces the volume and / or number of air bubbles in the wastewater after passing through it, thereby preventing air bubble wastewater from being sucked into the vacuum pump from the airflow outlet, which could damage the vacuum pump and cause it to malfunction or have a reduced lifespan.

[0046] Furthermore, the mopping module of this disclosure is connected to a piston that closes the airflow port via a connecting rod. When the mopping module is lowered, the connecting rod drives the piston to open the airflow port. When the mopping module is raised, the connecting rod drives the piston to close the airflow port. Thus, when the airflow port is open, air can be drawn from the suction source to create a negative pressure inside the wastewater tank, or air can be blown into the wastewater tank to create a positive pressure inside the wastewater tank, thereby enabling the wastewater tank to conveniently store and drain water. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0048] Figure 1 This is a schematic diagram of the structure of a wastewater tank for a cleaning device provided in some embodiments of this disclosure;

[0049] Figure 2 This is a schematic diagram of the structure of the defoaming partition provided in some embodiments of this disclosure;

[0050] Figure 3 A top view of the wastewater tank for cleaning equipment provided in some embodiments of this disclosure;

[0051] Figure 4 Flowcharts of cleaning equipment control methods provided in some embodiments of this disclosure;

[0052] Figure 5 This is a schematic diagram of the control logic for a cleaning device provided in some embodiments of this disclosure.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100-Sewage tank; 110-Sewage outlet; 111-Sewage flow channel; 112-Sewage collection structure; 120-Airflow outlet; 121-Airflow passage; 130-Defoaming baffle; 131-Baffle body; 132-Defoaming hole; 133-Connecting opening; 200-Clear water tank; 300-Controller; 310-Hall element; 320-Floor ball; 330-Accelerometer; 400-Mopping module; 410-Lifting module; 420-Mop; 500-Power source; 510-Reversing valve; 600-Valve assembly; 610-Piston; 620-Connecting rod; 630-Rotation center. Detailed Implementation

[0055] To make the technical solutions and effects of this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0056] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0057] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0058] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the article or device that includes said element.

[0059] Cleaning equipment typically includes a clean water tank and a wastewater tank. The clean water tank provides cleaning water to the floor or scrubbing structure, which uses this water to scrub the floor. A collection structure at the rear of the scrubbing structure collects the wastewater generated after scrubbing. To enhance cleaning power, detergent is often added to the cleaning water. During the scrubbing process, wastewater containing surfactants remains on the floor. The wastewater tank requires a vacuum pump to continuously draw in air to maintain negative pressure. Wastewater on the floor is scraped up by the collection structure and drawn into the negative-pressure wastewater tank through pipes. Because the collection structure also draws in a large amount of air along with the wastewater, the wastewater and air are thoroughly mixed before being drawn into the wastewater tank. Under the mechanical force of the air entering the wastewater tank's inlet and outlet, the surfactant-containing wastewater in the tank generates a large number of bubbles that float on the surface. When a large number of air bubbles accumulate, they may fill the empty space above the sewage tank and eventually be sucked into the vacuum pump through the air vent located above the sewage tank. This can cause the vacuum pump to malfunction or have a reduced lifespan. In addition, it can also cause the area around the air vent to become dirty, which is not conducive to the normal operation of the cleaning equipment.

[0060] Therefore, this disclosure provides a wastewater tank for cleaning equipment, comprising: a wastewater outlet, an airflow outlet, and a defoaming baffle. The wastewater outlet is fluidly connected to a wastewater collection structure outside the wastewater tank, and is used to discharge wastewater collected by the wastewater collection structure into the wastewater tank and / or to discharge wastewater from the wastewater tank. The wastewater outlet is located near the bottom of the wastewater tank. The airflow outlet is fluidly connected to a power source outside the wastewater tank, and the power source is used to create a negative pressure inside the wastewater tank via the airflow outlet to allow wastewater to flow in from the wastewater outlet and / or to pressurize the wastewater tank to allow wastewater to flow out from the wastewater outlet. The defoaming baffle is located in the fluid channel between the wastewater outlet and the airflow outlet, and is configured to reduce the volume and / or number of air bubbles in the wastewater after passing through the defoaming baffle. The wastewater tank for cleaning equipment provided in this embodiment has an antifoaming baffle installed on the fluid channel between the wastewater outlet and the airflow outlet. This baffle reduces the volume and / or number of air bubbles in the wastewater after they pass through it, thus preventing air-filled wastewater from being drawn into the vacuum pump through the airflow outlet, damaging the pump, and causing malfunctions or reduced lifespan. It also avoids frequent manual cleaning by the user and maintains a clean working environment for the components of the highly integrated cleaning equipment.

[0061] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0062] Figure 1 A schematic diagram of the working process of the wastewater tank of the cleaning equipment in an embodiment of this disclosure is shown, such as... Figure 1As shown in the figure, this embodiment of the present disclosure provides a wastewater tank 100 for cleaning equipment. The wastewater tank 100 generally includes a bottom plate, a top plate, and side walls. The bottom plate, top plate, and side walls enclose a closed space. The wastewater tank 100 also includes a wastewater outlet 110, an airflow outlet 120, and a defoaming baffle 130. The wastewater outlet 110 is generally located near the bottom plate of the wastewater tank 100. Optionally, the wastewater outlet 110 is generally located near one side wall of the bottom plate of the wastewater tank 100. The wastewater outlet 110 is used for wastewater to enter the wastewater tank 100 and to exit the wastewater tank 100. The wastewater outlet 110 is located near the bottom plate of the wastewater tank 100 to facilitate the discharge of wastewater from the wastewater tank 100. The sewage outlet 110 is fluidly connected to the sewage collection structure 112 outside the sewage tank 100 via the sewage flow channel 111. The sewage outlet 110 is used to discharge sewage collected by the sewage collection structure 112 into the sewage tank 100 and to discharge sewage from inside the sewage tank 100. The airflow outlet 120 is generally located at the top plate of the sewage tank 100. Optionally, the airflow outlet 120 is generally located at the top plate of the side wall of the sewage tank 100 opposite to the side wall near the sewage outlet 110. That is, the airflow outlet 120 is as far away from the sewage outlet 110 as possible, so that the distance from the bubble generation location (sewage outlet 110) to the airflow outlet 120 is minimized. The airflow port 120 is fluidly connected to a power source 500 outside the sewage tank 100 via an airflow channel 121. The power source 500 can be, for example, a vacuum pump or an air pump. The power source 500 is used to create a negative pressure inside the sewage tank 100 through the airflow port 120 so that sewage can flow in from the sewage port 110, or to pressurize the sewage tank 100 so that sewage can flow out from the sewage port 110. The defoaming baffle 130 is located on the fluid channel between the sewage port 110 and the airflow port 120. The defoaming baffle 130 is configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming baffle 130.In the sewage collection process provided in this embodiment, the sewage tank 100 maintains negative pressure by continuously drawing air in through the power source 500. Sewage collection structure 112, containing surfactant components, is lifted from the ground and drawn into the negative-pressure sewage tank 100 through the sewage flow channel 111 under the influence of negative pressure. Since the sewage collection structure 112 also draws in a large amount of air while collecting sewage, the sewage containing surfactant components and the air mix thoroughly, forming a large number of bubbles near the sewage outlet 110 of the sewage tank 100. These newly formed bubbles are relatively large and dense. The airflow inside the sewage tank 100 is further amplified by the suction from the power source 500. The airflow is primarily directed towards the air outlet 120. After bubbles are generated at the sewage outlet 110, they gradually pass through the defoaming baffle 130 with the airflow. Due to the obstruction of the defoaming baffle 130, the volume of the bubbles gradually decreases after passing through the defoaming baffle 130, and the number or density of the bubbles also decreases significantly. In particular, after passing through multiple defoaming baffles 130 consecutively, the bubbles will basically disappear. That is to say, the bubbles will basically disappear after passing through the defoaming baffle 130 from one side of the sewage tank 100 to the other side of the sewage tank 100. This prevents the bubble sewage from being sucked into the power source 500 from the air outlet 120, which could damage the power source 500 and cause it to malfunction or have a reduced lifespan.

[0063] Optional, such as Figure 2 As shown, the defoaming baffle 130 includes a baffle body 131, which is configured to divide the sewage tank 100 into multiple spaces; and multiple defoaming holes 132, which are distributed on one side of the baffle body 131 near the top of the sewage tank 100. The multiple defoaming holes 132 are configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming holes 132.

[0064] In this embodiment, the baffle body 131 is generally planar, but can also be curved or a combination of planar and curved structures. This is not limited to any particular type. This embodiment uses a planar structure as an example. Multiple defoaming holes 132 are distributed on the top of the baffle body 131. These holes are approximately distributed within 1 / 4 to 1 / 3 of the height of the baffle body 131 to filter bubbles generated from the space between the wastewater surface and the top plate of the wastewater tank 100. The multiple defoaming holes 132 can be evenly distributed on the top of the baffle body 131 or non-uniformly distributed. For example, they can be regionally distributed on the top of the baffle body 131, with each region arranged in a matrix. Optionally, the diameter of the defoaming holes 132 is 1mm-5mm, such as 2mm or 3mm, to properly filter bubbles after adapting to the bubble diameter. Optionally, the plurality of defoaming holes 132 in each region are configured with a gradually increasing diameter from bottom to top. For example, the diameter of the bottom holes is set to 1mm-2mm, and the diameter of the top holes is set to 4mm-5mm. This is because larger bubbles generally have greater buoyancy and tend to be located at the top of the bubble cluster. Therefore, to accommodate the characteristic of gradually increasing bubble diameter from bottom to top, the plurality of defoaming holes 132 are configured with a gradually increasing diameter from bottom to top to better filter bubbles after adapting to the bubble diameter. Optionally, the plurality of defoaming holes 132 in each region are configured with a gradually decreasing density from bottom to top. This is because larger bubbles generally have greater weight, making it more difficult to generate large bubbles. Therefore, large bubbles at the top usually have a lower density. Thus, to accommodate the characteristic of gradually decreasing bubble density from bottom to top, the plurality of defoaming holes 132 are configured with a gradually decreasing density from bottom to top to better filter bubbles after adapting to the bubble diameter. The shape of the defoaming holes 132 can be round, square, diamond-shaped, etc., and is not limited thereto.

[0065] Optionally, the defoaming baffle 130 further includes a connecting opening 133, which is located on the side of the baffle body 131 near the bottom of the sewage tank 100. The connecting opening 133 is configured to allow sewage in the plurality of spaces to communicate.

[0066] In this embodiment, the connecting opening 133 is approximately located within 1 / 4 to 1 / 3 of the area of ​​the partition body 131 near the bottom of the sewage tank 100. The connecting opening 133 has a relatively large opening size to facilitate communication between the sewage in the spaces on both sides of the partition body 131. For example, the connecting opening 133 is approximately 1 / 5 to 1 / 3 of the height of the partition body 131, and approximately 1 / 3 to 1 / 2 of the width of the partition body 131. Multiple connecting openings 133 can also be provided, for example, 1 to 3. The shape of the connecting opening 133 can be circular, square, rectangular, rhomboid, etc., and is not limited thereto.

[0067] Optional, such as Figure 3 As shown, the number of defoaming baffles 130 inside the sewage tank 100 can be at least one, or optionally, the number of defoaming baffles 130 is greater than or equal to two. As a consistent implementation, multiple insertion positions are provided on the inner wall of the sewage tank 100. The defoaming baffles 130 are detachably inserted into the insertion positions and fixed to the sewage tank 100, dividing the sewage tank 100 into multiple spaces. Of course, the defoaming baffles 130 can also be non-detachably fixed inside the sewage tank 100. Optionally, the defoaming baffles 130 are arranged approximately vertically inside the sewage tank 100. They can also be arranged in a non-vertical direction, for example, at an angle of 10-20 degrees to the vertical direction. As the power source 500 continuously draws in air to maintain the negative pressure in the sewage tank 100, the sewage containing surfactants mixes thoroughly with the air, forming a large number of bubbles near the sewage outlet 110 of the sewage tank 100. These bubbles slowly rise to the surface of the sewage and accumulate in the remaining space above the sewage surface. The newly formed bubbles are relatively large and dense. As the power source 500 draws in air, the airflow inside the sewage tank 100 flows primarily towards the air outlet 120. The bubbles gradually pass through multiple defoaming baffles 130. Each time a bubble passes through a defoaming baffle 130, its volume gradually decreases, and its number or density also drops significantly. After passing through two or more defoaming baffles 130, the bubbles essentially disappear, thus preventing the bubbly sewage from being drawn into the power source 500 through the air outlet 120, which could damage the power source 500 and cause it to malfunction or have a reduced lifespan.

[0068] In this embodiment of the wastewater tank 100, a defoaming baffle 130 is provided to separate and eliminate foam. The wastewater tank 100 has at least three compartments that separate the bubbles generated at the wastewater outlet 110, allowing them to pass through the defoaming baffle 130 under pressure. As the bubbles pass through the defoaming baffle 130, the uniform surface energy distribution of the bubble surface is disrupted, and large polyhedral bubbles are broken when passing through the baffle 130. Since some droplets splash to the other side of the defoaming baffle 130, they reform into bubbles under the airflow through the defoaming holes 132. However, the formed bubbles are mainly spherical, stable bubbles, and their number is less than that of the large polyhedral bubbles in the upstream adjacent compartments. Similarly, under the action of airflow, steady-state bubbles will also pass through the defoaming baffle 130 and form separate small bubbles in more distant compartments. The number of these small bubbles is less than that of steady-state bubbles in the previous compartment, and they will actively collapse and dissipate in still water. This avoids the problem of bubble-filled wastewater being sucked into the power source 500 from the airflow port 120 and damaging the power source 500. It also avoids the problem of needing to manually clean the airflow port 120 after it has been contaminated.

[0069] Optionally, the wastewater tank 100 in this embodiment of the present disclosure further includes a valve assembly 600, which is configured to close or open the airflow port 120.

[0070] Optionally, the valve assembly 600 includes a piston 610 and a connecting rod 620. The piston 610 is configured to rotate around a rotation center 630 within a preset angle range to switch between closing and opening the airflow port 120. The connecting rod 620 is connected to the piston 610 and is configured to drive the piston 610 to rotate within the preset angle range, wherein the preset angle range is, for example, 10 degrees to 30 degrees. Optionally, the connecting rod 620 is connected to a mopping module 400, which can switch between a lowered state and a raised state. When the mopping module 400 of the cleaning device is lowered, the mopping module 400 drives the piston 610 to open the airflow port 120 via the connecting rod 620. The power source 500 draws gas from the wastewater tank 100 through the airflow port 120, creating a negative pressure inside the wastewater tank 100. When the mopping module 400 is raised, it drives the piston 610 via the connecting rod 620 to close the airflow port 120. Simultaneously, the power source 500 stops pumping air, thus preventing sewage from entering the power source 500 and causing damage. The mopping module 400 can be raised when the cleaning equipment has stopped performing the cleaning task (the sewage tank is not yet full). In this case, the mopping module 400 rises, driving the piston 610 via the connecting rod 620 to close the airflow port 120, and the power source 500 stops pumping air, completing the cleaning task. Alternatively, when the sewage tank is full during the cleaning task, to prevent sewage from entering the power source 500 through the airflow port 120, the controller 300 actively controls the mopping module 400 to rise, simultaneously driving the piston 610 via the connecting rod 620 to close the airflow port 120, and the power source 500 stops pumping air.

[0071] Optionally, in some other embodiments, the valve assembly 600 includes a piston 610 and a drive unit. The drive unit is configured to drive the piston 610 to rotate within a preset angle range to switch between closing and opening the airflow port, wherein the preset angle range is, for example, 10 degrees to 30 degrees. In this embodiment, the drive unit can independently control the rotation of the piston 610 by setting a rotation mechanism, and does not necessarily need to be linked with the mopping module 400. This control method has a simple structure.

[0072] Optionally, the piston 610 is a one-way valve that can only be opened when the mopping module is lowered during air extraction; otherwise, the piston 610 will always block the airflow port 120.

[0073] Optionally, the piston 610 can be a piston type or a butterfly valve type, and there is no limitation on the latter.

[0074] Optionally, the wastewater tank 100 further includes a sensor assembly configured such that when the sensor assembly is triggered, the controller 300 controls the valve assembly 600 to close the airflow port 120. Optionally, the sensor assembly includes a Hall element 310 disposed at the top of the wastewater tank 100; a float 320 disposed inside the wastewater tank 100, with a connecting rod between the float 320 and the Hall element 310. The float 320 moves along the connecting rod toward the Hall element 310 as the wastewater level rises. When the distance between the float 320 and the Hall element 310 reaches a preset threshold, the sensor assembly is triggered, wherein the preset threshold is 2mm-5mm. An electromagnetic element is disposed inside the float 320; when it approaches the Hall element 310 to the preset threshold, it triggers a high-level signal. The controller 300 can determine that the wastewater tank is full based on this high-level trigger.

[0075] In another embodiment, the sensor components include an accelerometer 330 (or gyroscope) and other posture detection components. When the cleaning equipment is tilted or inverted, or encounters bumps during operation, or when the wastewater collection structure 112 sucks in wastewater exceeding the usable volume of the wastewater tank 100, the vacuum pump may be sucked in water, potentially damaging it. Therefore, this embodiment uses an accelerometer 330 (or gyroscope) and other posture detection components. When the controller 300 detects abnormal vibration through the accelerometer 330 (or gyroscope), the controller 300 controls the mopping module 400 to rise and pushes the linkage 620 to close the piston 610. Simultaneously, the controller 300 shuts down the vacuum pump to prevent it from sucking in liquid. When the sensor component status recovers and the cleaning equipment is in operation, the mopping module 400 descends, and the piston 610 opens under the action of the linkage 620, the energy storage element, or gravity. The controller 300 then restarts the vacuum pump to continue wastewater collection, thus preventing wastewater from entering and damaging the vacuum pump.

[0076] like Figure 1 As shown, this disclosure also provides a cleaning device, including a wastewater tank for cleaning devices as described in any of the foregoing embodiments.

[0077] Optionally, the cleaning equipment also includes a clean water tank 200 and a mopping module 400. The mopping module 400 has a mop 420 facing the floor to be cleaned. Cleaning water in the clean water tank 200 flows into the mop 420 on the mopping module 400 through a pipe, and the wet mop performs mopping. The mopping module 400 is raised and lowered by at least one lifting module 410. The mopping module 400 is configured to lower itself to contact the floor when performing a mopping task and to rise to separate itself from the floor after completing the mopping task. The mopping module 400 is connected to a piston 610 that closes the airflow port 120 via a connecting rod 620. When the mopping module 400 lowers, the connecting rod 620 drives the piston 610 to open the airflow port 120. When the mopping module 400 rises, the connecting rod 620 drives the piston 610 to close the airflow port 120 to prevent wastewater from entering the vacuum pump. When the mopping module 400 is working, the clean water tank 200 supplies water to the mopping module 400 to moisten it and achieve a better cleaning effect. However, water will remain on the ground after cleaning, making the ground slippery and potentially damaging user facilities such as wooden floors. This embodiment of the disclosure provides a wastewater collection structure 112 for collecting wastewater. The collected wastewater is connected to the wastewater outlet of the wastewater tank 100 through a flow channel and collected in the wastewater tank 100, achieving a dry and water-free floor.

[0078] like Figure 4 As shown in the embodiments of this disclosure, a control method for a cleaning device is also provided. The cleaning device is the cleaning device described in the foregoing embodiments, and the wastewater tank is the wastewater tank for the cleaning device described in any of the foregoing embodiments. The method includes the following steps:

[0079] S401, the power source draws gas from the sewage tank, creating a negative pressure inside the sewage tank;

[0080] S402, in response to the formation of negative pressure in the sewage tank, the sewage collected by the sewage collection structure is discharged into the sewage tank through the sewage outlet, and the volume and / or number of bubbles in the sewage decreases after passing through the defoaming baffle.

[0081] The cleaning equipment control method provided in this embodiment uses a defoaming baffle on the fluid channel between the sewage outlet and the airflow outlet of the sewage tank. The defoaming baffle reduces the volume and / or number of air bubbles in the sewage after passing through it, thereby preventing air bubble sewage from being sucked into the vacuum pump from the airflow outlet, which could damage the vacuum pump, cause it to malfunction or reduce its lifespan. At the same time, it can also prevent air bubbles from contaminating the airflow outlet.

[0082] Optional, such as Figure 4 As shown, the method further includes the following steps:

[0083] S403, when the sensor assembly in the wastewater tank is triggered, the mopping module of the cleaning device rises, the air vent is closed, and the power source stops sucking up gas.

[0084] The cleaning equipment control method provided in this embodiment closes the airflow port and stops the power source from drawing gas when the sensor component in the sewage tank is triggered, thereby preventing air-filled sewage from being sucked into the vacuum pump from the airflow port and damaging the vacuum pump.

[0085] Optional, such as Figure 4 As shown, the method further includes the following steps:

[0086] S404, when the wastewater tank of the cleaning equipment needs to be drained, the mopping module of the cleaning equipment is lowered;

[0087] The power source pressurizes the sewage tank through a reversing valve so that sewage can flow out from the sewage outlet.

[0088] The cleaning equipment control method provided in this embodiment can discharge sewage from the sewage tank by reverse air blowing when drainage is required, using the same circuit.

[0089] Optionally, step S401 specifically includes:

[0090] The mopping module of the cleaning equipment descends, and the mopping module drives a piston via a connecting rod to open the airflow port. The power source then draws air from the wastewater tank through the airflow port, creating a negative pressure inside the wastewater tank. Through coordinated control, the entire cleaning process—including the mopping module descending, the piston opening the airflow port, the power source drawing air, and wastewater entering the wastewater tank—can be achieved.

[0091] Optionally, step S404 specifically includes:

[0092] When the wastewater tank of the cleaning equipment needs to be drained, the mopping module of the cleaning equipment lowers. The mopping module drives a piston via a connecting rod to open the airflow port. A reversing valve then directs air from the power source into the wastewater tank through the airflow port, pressurizing the tank to allow wastewater to flow out through the wastewater outlet. When the wastewater tank is full, the cleaning equipment can move to a position where wastewater can be discharged. The reversing valve then switches the suction port of the vacuum pump, injecting gas into the wastewater tank through the airflow port. At this point, because the wastewater outlet is below the liquid surface and the air pressure outside the wastewater collection structure is lower than the air pressure inside the wastewater tank, the wastewater is discharged from the wastewater collection structure, thus emptying the wastewater tank.

[0093] like Figure 5As shown, the control process of the wastewater tank of the cleaning equipment is as follows: First, during the cleaning task, the mopping module 400 is lowered by the lifting module 410. Correspondingly, the mopping module 400 rotates the piston 610 through the connecting rod 620 to open the airflow port 120. At this time, the reversing valve 510 is in the forward direction, and the power source 500 (e.g., a vacuum pump) starts to draw air, creating a negative pressure inside the wastewater tank 100. Wastewater enters the wastewater tank 100 through the wastewater collection structure 112 and the wastewater port 110. As the wastewater level in the wastewater tank 100 rises, the controller 300 detects the signals of the sensor components in real time. When a high-level signal from the Hall element 310 or a level signal from the accelerometer 330 (or gyroscope) is detected, it is determined that the wastewater is... When the wastewater in the water tank 100 reaches its upper limit, the mopping module 400 is raised via the lifting module 410. Simultaneously, the mopping module 400, through the connecting rod 620, rotates the piston 610 to close the airflow port 120, and the controller 300 stops the power source 500. Then, it is determined whether drainage is needed. If drainage is required, the cleaning equipment moves to the drainage position, and the mopping module 400 is lowered again via the lifting module 410. The mopping module 400, through the connecting rod 620, rotates the piston 610 to reopen the airflow port 120. At this time, the reversing valve 510 reverses direction, and the power source 500 (e.g., a vacuum pump) begins to blow air into the wastewater tank 100, pressurizing the wastewater. The wastewater is discharged from the wastewater tank under the pressure difference. Afterward, the mopping module 400 is raised, the power source 500 stops working, and the wastewater tank is empty, awaiting the start of the next cleaning task.

[0094] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0095] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A wastewater tank for cleaning equipment, characterized in that, include: Wastewater outlet, airflow outlet, and defoaming baffle, among which, The sewage outlet is in fluid communication with the sewage collection structure outside the sewage tank. The sewage outlet is used to discharge sewage collected by the sewage collection structure into the sewage tank and / or to discharge sewage from the sewage tank. The sewage outlet is located near the bottom of the sewage tank. The airflow port is in fluid communication with a power source outside the sewage tank. The power source is used to create a negative pressure inside the sewage tank through the airflow port so that sewage can flow in from the sewage port and / or to pressurize the sewage tank so that sewage can flow out from the sewage port. The defoaming baffle is located in the fluid channel between the sewage outlet and the airflow outlet, and the defoaming baffle is configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming baffle.

2. The wastewater tank for cleaning equipment according to claim 1, characterized in that, The defoaming partition includes: A partition body, the partition body being configured to divide the wastewater tank into multiple spaces; Multiple defoaming holes are distributed on one side of the partition body near the top of the sewage tank. The multiple defoaming holes are configured to reduce the volume and / or number of air bubbles in the sewage after passing through the defoaming holes.

3. The wastewater tank for cleaning equipment according to claim 2, characterized in that, The defoaming partition also includes: A connecting opening is provided on the side of the partition body near the bottom of the sewage tank, and the connecting opening is configured to allow sewage in the plurality of spaces to communicate.

4. The wastewater tank for cleaning equipment according to claim 2, characterized in that, The plurality of defoaming pores are configured such that the pore diameter gradually increases from bottom to top.

5. The wastewater tank for cleaning equipment according to any one of claims 1-4, characterized in that, The number of defoaming partitions is greater than or equal to 2.

6. The wastewater tank for cleaning equipment according to any one of claims 1-4, characterized in that, The defoaming baffle is installed roughly vertically inside the wastewater tank.

7. The wastewater tank for cleaning equipment according to claim 1, characterized in that, Also includes: The valve assembly is configured to close or open the airflow port.

8. The wastewater tank for cleaning equipment according to claim 7, characterized in that, The valve assembly includes: The piston is configured to rotate within a preset angle range to close or open the airflow port; A connecting rod, connected to the piston, is configured to drive the piston to rotate within a preset angle range.

9. A cleaning device, characterized in that, Includes the wastewater tank for cleaning equipment as described in any one of claims 1-8.

10. A control method for a cleaning device as described in claim 9, characterized in that, The method includes: The power source draws gas from the sewage tank, creating a negative pressure inside the sewage tank; In response to the formation of negative pressure inside the sewage tank, the sewage collected by the sewage collection structure is discharged into the sewage tank through the sewage outlet, and the volume and / or number of air bubbles in the sewage decrease after passing through the defoaming baffle.

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