Sewage tank and scrubber

Abstract

The present application relates to the technical field of cleaning equipment, and more particularly to a sewage tank and a scrubber, the sewage tank provided by the present application is detachably arranged on a machine body of the scrubber; the sewage tank comprises a tank body, a first sealing assembly and a first elastic member, the tank body has a cavity, an air inlet and an air outlet which are in communication with the cavity, the first sealing assembly is slidingly arranged at the air outlet in a first direction, the first sealing assembly has a first state of closing the air outlet and a second state of opening the air outlet; the first elastic member is arranged on a side of the first sealing assembly away from the air outlet and is used for driving the first sealing assembly to remain in the first state; a pushing member is arranged on the machine body, when the tank body is installed on the machine body, the pushing member pushes the first sealing assembly, so that the first sealing assembly is switched to the second state, the sewage tank provided by the present application can automatically open the air outlet to ensure smooth airflow when the tank body is installed, and can automatically close the air outlet to prevent pollution leakage when the tank body is detached.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more particularly to a wastewater tank and a floor scrubber. Background Technology

[0002] Floor scrubbers, as cleaning equipment that integrates cleaning and vacuuming, are widely used in residential, commercial, and industrial environments. A typical floor scrubber consists of a main body and a wastewater tank. The main body houses a power unit such as a blower, while the wastewater tank collects wastewater and debris generated during the cleaning process. During operation, the blower generates negative pressure, drawing in dirt through the wastewater tank's inlet. After separation within the tank, clean air is discharged back into the main body through the outlet.

[0003] For ease of cleaning and maintenance, wastewater tanks are typically designed with a detachable structure, allowing users to remove them from the unit for emptying and cleaning. However, existing wastewater tanks usually have a fixed opening at the air outlet. When the tank is removed, the outlet remains open, leading to several problems: First, residual wastewater can easily overflow from the outlet, causing secondary pollution. Especially when moving or tilting the tank, wastewater can flow out due to gravity, contaminating the floor and surrounding environment. Second, odors from the tank can dissipate through the open outlet, affecting indoor air quality and user experience. The waste collected in the tank often contains various organic substances that produce unpleasant odors during storage. If not effectively sealed, these odors will continue to be released into the environment. Furthermore, the open outlet can cause waste to splash out, especially during transport when it may be jostled, potentially throwing liquid and solid waste out and causing environmental pollution.

[0004] Some existing technologies attempt to address the aforementioned issues by installing manual valves or covers at the air outlet. However, this solution requires users to manually operate the valves each time the wastewater tank is disassembled or reassembled, increasing the complexity of the usage process and making it easy for the protective effect to be lost if the user forgets to operate it. Furthermore, manual valves are prone to damage during frequent use, affecting the sealing effect and service life.

[0005] Therefore, a technical solution is needed that can automatically close the air outlet when the sewage tank is disassembled and automatically open the air outlet when it is installed, in order to solve the technical problems of sewage leakage and odor emission that easily occur when the sewage tank is disassembled in the existing technology. Summary of the Invention

[0006] This invention provides a sewage tank to solve the technical problem in the prior art where the air outlet cannot be automatically closed when the sewage tank is disassembled, resulting in sewage leakage and odor emission. It realizes the automatic linkage between the air outlet sealing state and the sewage tank installation state, which can automatically open the air outlet to ensure smooth airflow when the sewage tank is installed, and automatically close the air outlet to prevent pollution leakage when the sewage tank is disassembled.

[0007] This invention provides a wastewater tank, detachably mounted on the body of a floor scrubber; the wastewater tank includes: a tank body having a cavity and an air inlet and an air outlet communicating with the cavity, the air inlet being used to draw in dirt cleaned by the machine body, and the air outlet being used to discharge gas from the cavity; a first sealing assembly slidably mounted at the air outlet along a first direction, the first sealing assembly having a first state of closing the air outlet and a second state of opening the air outlet; a first elastic member disposed on the side of the first sealing assembly away from the air outlet, used to drive the first sealing assembly to remain in the first state; wherein, a pushing member is provided on the machine body, when the tank body is mounted on the machine body, the pushing member pushes the first sealing assembly to switch the first sealing assembly to the second state.

[0008] According to the present invention, a sewage tank is provided with a first guide structure along a first direction. The first sealing assembly includes: a guide member having a second guide structure that slides with the first guide structure; and a first sealing member disposed at one end of the guide member for sealing the air outlet.

[0009] According to a sewage tank provided by the present invention, a first guiding structure includes a first guiding ring, and a second guiding structure includes a second guiding ring that slides with the first guiding ring; a communicating groove is provided on the first guiding ring and / or the second guiding ring so that the gap between the first guiding ring and the second guiding ring communicates with the external space.

[0010] According to a sewage tank provided by the present invention, one of the first guide ring and the second guide ring is provided with a limiting groove along a first direction, and the other is provided with a limiting block that slides with the limiting groove.

[0011] According to the present invention, a sewage tank is provided with a first snap-fit ​​part around the air outlet, and a second snap-fit ​​part is provided around the pusher on the body, the second snap-fit ​​part being used to snap the first snap-fit ​​part.

[0012] According to the present invention, a sewage tank is provided with a ventilation duct inside the tank body. The inlet end of the ventilation duct is connected to a cavity, and the outlet end of the ventilation duct is connected to an air outlet. The inner bottom surface of the ventilation duct is gradually raised from the inlet end to the outlet end.

[0013] According to the present invention, a sewage tank further includes a water-blocking rib disposed in the ventilation duct to intercept water droplets that climb up the inner surface of the ventilation duct.

[0014] According to a sewage tank provided by the present invention, the sewage tank further includes a second sealing component, which is rotatably disposed at the air inlet for sealing the air inlet; wherein the second sealing component can be flipped under the action of wind pressure to open the air inlet.

[0015] According to the present invention, a sewage tank is provided in the tank body, and an air inlet is provided at the end of the air inlet; the second sealing assembly includes: a flip-top plate, which is rotatably disposed at the end of the air inlet plate where the air inlet is located; a sealing soft rubber, which is disposed on the flip-top plate to cover the air inlet so as to close the air inlet; and a torsion spring for driving the flip-top plate to rotate in the direction of closing the air inlet.

[0016] According to the present invention, a sewage tank has a cavity comprising an upper filter chamber and a lower sewage chamber, and an air inlet with an angled structure, the air inlet being positioned towards the filter chamber.

[0017] According to the present invention, the width of the air inlet of a wastewater tank gradually increases from one end adjacent to the filter chamber to the other end.

[0018] The present invention also provides a floor scrubbing machine, comprising: a body; and the aforementioned wastewater tank.

[0019] The wastewater tank provided by this invention, by setting a first sealing component at the air outlet of the wastewater tank, and cooperating with a first elastic element and a pusher on the body to form an automatic sealing system, effectively solves the problem of wastewater leakage and odor emission caused by the inability of the air outlet to automatically close when the wastewater tank is disassembled in the prior art. The first sealing component is designed with two working states: a first state of sealing with the air outlet closed, and a second state of opening the air outlet. The first elastic element continuously applies a pushing force towards the air outlet to the first sealing component, keeping it naturally in the first state. When the wastewater tank is installed on the body, the pusher pushes the first sealing component to overcome the force of the first elastic element and switch to the second state of opening the air outlet. When the wastewater tank is removed from the body, the external pushing force of the pusher is lost, and the first sealing component immediately returns to the first state of closing the air outlet under the drive of the first elastic element. Through the above design, the automatic linkage between the air outlet sealing state and the sewage tank installation state is realized. The sealing switch can be automatically completed during the disassembly and assembly process without manual operation by the user. This fundamentally eliminates the risk of sewage leakage during disassembly, while preventing the leakage of odors from the sewage tank and avoiding secondary pollution to the surrounding environment. This significantly improves the ease of use and environmental performance of the floor scrubber. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a sewage tank provided by the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of a sewage tank from another angle provided by the present invention;

[0023] Figure 3 This is a top view of the sewage tank and the main body provided by the present invention;

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0025] Figure 5 yes Figure 4 A magnified schematic diagram of the structure at point B;

[0026] Figure 6 This is a schematic diagram of the structure of the upper shell portion of the box provided by the present invention;

[0027] Figure 7 This is a schematic diagram of a structure comprising a ventilation duct, a first sealing assembly, and a first elastic element provided by the present invention;

[0028] Figure 8 This is a three-dimensional structural schematic diagram of a first sealing component provided by the present invention;

[0029] Figure 9 This is a three-dimensional structural diagram of a box bottom shell, an air inlet pipe, and a second sealing assembly provided by the present invention;

[0030] Figure 10 This is a three-dimensional structural diagram of the upper shell portion of the box, the ventilation duct and the first sealing assembly provided by the present invention;

[0031] Figure 11 This is a top view schematic diagram of a sewage tank provided by the present invention;

[0032] Figure 12 yes Figure 11 A schematic diagram of the cross-sectional structure along the CC direction;

[0033] Figure 13 This is a three-dimensional structural diagram of a floor scrubber provided by the present invention;

[0034] Figure label:

[0035] X: First direction;

[0036] 1: Body; 11: Pushing component; 12: Second locking part;

[0037] 2: Housing; 21: Cavity; 211: Filter chamber; 212: Wastewater chamber; 22: Air inlet; 23: Air outlet; 24: First guide structure; 241: First guide ring; 242: Limiting groove; 25: First snap-fit ​​part; 26: Connecting ventilation duct; 27: Water baffle; 271: Flow guide part; 28: Air inlet pipe;

[0038] 3: First sealing assembly; 31: Guide member; 311: Second guide structure; 3111: Second guide ring; 3112: Communicating groove; 3113: Limiting block; 32: First sealing member;

[0039] 4: First elastic element;

[0040] 5: Second sealing assembly; 51: Flip cover; 52: Sealing rubber; 53: Torsion spring. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] The following is combined with Figures 1 to 12 The present invention describes a wastewater tank, which is detachably mounted on the body 1 of a floor scrubber; the wastewater tank includes: a tank body 2, a first sealing assembly 3, and a first elastic member 4, wherein:

[0043] The housing 2 has a cavity 21 and an air inlet 22 and an air outlet 23 connected to the cavity 21. The air inlet 22 is used to draw in the dirt cleaned by the housing 1, and the air outlet 23 is used to discharge the gas in the cavity 21.

[0044] The first sealing component 3 is slidably disposed at the air outlet 23 along the first direction X. The first sealing component 3 has a first state of closing the air outlet 23 and a second state of opening the air outlet 23. Specifically, the air outlet 23 is disposed at the bottom of the housing 2 and is connected to the air outlet duct of the body 1. The first direction X is the vertical direction. The opening and closing of the air outlet 23 is realized by moving the first sealing component 3 along the vertical direction.

[0045] The first elastic element 4 is disposed on the side of the first sealing assembly 3 away from the air outlet 23, and is used to drive the first sealing assembly 3 to remain in the first state.

[0046] The body 1 is provided with a pusher 11. When the housing 2 is installed on the body 1, the pusher 11 pushes the first sealing component 3 so that the first sealing component 3 switches to the second state.

[0047] In this invention, by setting a first sealing component 3 at the air outlet 23 of the sewage tank, and cooperating with the first elastic element 4 and the pusher 11 on the body 1 to form an automatic sealing system, the problem of sewage leakage and odor emission caused by the inability of the air outlet 23 to automatically close when the sewage tank is disassembled in the prior art is effectively solved. The first sealing component 3 is designed with two working states: the first state is the sealed state of closing the air outlet 23, and the second state is the working state of opening the air outlet 23. The first elastic element 4 continuously applies a pushing force to the first sealing component 3 in the direction of the air outlet 23, so that it naturally remains in the first state. When the sewage tank is installed on the body 1, the pusher 11 pushes the first sealing component 3 to overcome the force of the first elastic element 4 and switch to the second state to open the air outlet 23. When the sewage tank is removed from the body 1, the external pushing force of the pusher 11 is lost, and the first sealing component 3 immediately returns to the first state to close the air outlet 23 under the drive of the first elastic element 4. Through the above design, the sealing state of the air outlet 23 and the installation state of the sewage tank are automatically linked. The sealing switch can be automatically completed during the disassembly and assembly process without manual operation by the user. This fundamentally eliminates the risk of sewage leakage during disassembly and prevents the leakage of odors from the sewage tank, avoiding secondary pollution to the surrounding environment and significantly improving the ease of use and environmental performance of the floor scrubber.

[0048] Specifically, the first sealing assembly 3 has two working states: a first state of sealing the air outlet 23 and a second state of opening the air outlet 23. The first elastic element 4 is located on the side of the first sealing assembly 3 away from the air outlet 23, continuously applying an elastic force towards the air outlet 23 to the first sealing assembly 3, thus naturally maintaining the first sealing assembly 3 in the first state. The pushing element 11 serves as an external driving force source; when the sewage tank is installed in place, the pushing element 11 overcomes the elastic force of the first elastic element 4 to push the first sealing assembly 3 to switch states.

[0049] In one specific embodiment, when the user needs to remove the wastewater tank for cleaning after cleaning, the first sealing component 3 immediately switches to a sealed state under the action of the first elastic element 4 the instant the wastewater tank is detached from the body 1. This effectively prevents the residual wastewater inside the tank 2 from overflowing and odors from spreading, avoiding secondary pollution to the surrounding environment. During reinstallation, the insertion action simultaneously opens the first sealing component 3, and the entire process requires no additional operation from the user.

[0050] In related technologies, the air outlet 23 of the sewage tank usually adopts a fixed opening design or a valve structure that requires manual operation by the user, which has problems such as sewage leakage, odor emission, and cumbersome operation when the sewage tank is removed. However, in this embodiment of the invention, through the coordinated action of the first sealing component 3, the first elastic element 4, and the pushing component 11, the air outlet 23 is automatically opened and closed according to the installation state of the sewage tank. This not only ensures smooth airflow when the floor scrubber is working, but also solves the problem of pollution leakage when disassembled, significantly improving the ease of use and environmental performance of the equipment.

[0051] like Figure 1 , 2 As shown, the housing 2 includes an upper shell and a bottom shell, which are connected by snap-fit, forming a cavity 21 between the upper shell and the bottom shell. A sealing ring is provided at the connection between the upper shell and the bottom shell for sealing.

[0052] like Figure 6-8 As shown, in some embodiments, the housing 2 is provided with a first guide structure 24 along the first direction X, and the first sealing assembly 3 includes: a guide member 31, the guide member 31 having a second guide structure 311 that slides with the first guide structure 24; and a first sealing member 32, which is disposed at one end of the guide member 31 and is used to seal the air outlet 23.

[0053] In this invention, a first guide structure 24 is provided on the housing 2, and a guide member 31 with a second guide structure 311 is configured in the first sealing assembly 3. The two slide together to form a precise guiding mechanism, ensuring that the movement trajectory of the first sealing assembly 3 in the first direction X is accurate and stable. The guide member 31 carries the first sealing member 32 and guides it to accurately reach the sealing position, avoiding sealing failure caused by movement deviation.

[0054] Specifically, the first guide structure 24 and the second guide structure 311 form a sliding pair, restricting the first sealing assembly 3 to move only along a predetermined first direction X, eliminating degrees of freedom in other directions. The guide member 31, as the main structure of the first sealing assembly 3, not only provides a guiding function but also provides an installation base for the first sealing member 32, ensuring the support effect for the first sealing member 32, thereby ensuring a reliable sealing contact with the air outlet 23.

[0055] In one specific embodiment, when the floor scrubber is frequently started and stopped or used in a bumpy environment, the presence of the guide structure ensures that the first sealing assembly 3 always moves along the designed trajectory, avoiding lateral displacement caused by vibration or impact, and ensuring the consistency and reliability of each sealing action. The precise fit between the guide 31 and the housing 2 can also withstand the thrust applied by the pusher 11, preventing deformation or misalignment under stress.

[0056] like Figure 8As shown, in some embodiments, the first guide structure 24 includes a first guide ring 241, and the second guide structure 311 includes a second guide ring 3111 that slides with the first guide ring 241; the first guide ring 241 and / or the second guide ring 3111 are provided with a communicating groove 3112 so that the gap between the first guide ring 241 and the second guide ring 3111 communicates with the external space.

[0057] In this invention, the sliding fit between the first guide ring 241 and the second guide ring 3111 provides circumferential guiding constraint. However, during use, water can easily enter the gap between the two guide rings. When the wastewater tank is removed from the body 1, the water in the gap will form a suction cup effect, generating vacuum resistance and preventing the first sealing assembly 3 from switching from the second state to the first state. By providing a connecting groove 3112 on the first guide ring 241 and / or the second guide ring 3111, the gap between the guide rings is connected to the external space, effectively disrupting the sealed environment and eliminating the suction cup effect.

[0058] Specifically, the first guide ring 241 and the second guide ring 3111 form an annular sliding pair, providing stable circumferential constraint. The connecting groove 3112 serves as a dedicated pressure relief channel; when water enters between the guide rings, the connecting groove 3112 allows airflow, preventing the formation of a sealed water film. The connecting groove 3112 can be located on the first guide ring 241, the second guide ring 3111, or both simultaneously, as long as it enables communication between the gap and the outside.

[0059] Preferably, multiple first guide rings 241 and multiple second guide rings 3111 are provided, and the multiple first guide rings 241 are respectively inserted and engaged with the multiple second guide rings 3111 to guide the first sealing assembly 3.

[0060] In one specific embodiment, during the cleaning process, water mist or droplets inevitably enter various parts of the wastewater tank under the action of airflow. When this water enters the gap between the first guide ring 241 and the second guide ring 3111, if there is no connecting groove 3112 when the wastewater tank is removed, the water in the gap will generate negative pressure resistance due to the sealed space, causing the first sealing component 3 to fail to be pressed down smoothly to the first state, resulting in the failure of the air outlet 23 to close in time. In this embodiment of the invention, the setting of the connecting groove 3112 ensures the communication between the guide ring gap and the external space, effectively eliminating the suction effect caused by water, and ensuring that the first sealing component 3 can smoothly switch to the sealed state under the action of the first elastic element 4 when the wastewater tank is removed, avoiding the sealing failure problem caused by suction resistance.

[0061] like Figure 6-8As shown, in some embodiments, one of the first guide ring 241 and the second guide ring 3111 is provided with a limiting groove 242 along the first direction X, and the other is provided with a limiting block 3113 that slides with the limiting groove 242.

[0062] In this invention, a limiting groove 242 is provided in one of the first guide ring 241 and the second guide ring 3111, and a limiting block 3113 that slides with the limiting groove 242 is provided in the other, forming an anti-rotation limiting mechanism that restricts the first sealing assembly 3 to slide only along the first direction X and prevents it from rotating. Since the top of the housing 2 is usually an irregular structure, the second guide ring 3111 needs to be fitted to the top of the housing 2 and set into a corresponding irregular structure. If the first sealing assembly 3 rotates relative to the housing 2, it will cause misalignment of the irregular structure, affecting the assembly accuracy and smoothness of sliding.

[0063] Specifically, the limiting groove 242 extends along the first direction X to form a sliding guide groove. The cooperation between the limiting block 3113 and the limiting groove 242 allows sliding movement along the first direction X while preventing rotation around the axis. Irregular structures typically include non-circular contours or asymmetrical geometric features. The irregular design of the second guide ring 3111 ensures a precise fit with the top of the housing 2.

[0064] In one specific embodiment, when the sewage tank is subjected to torsional force during installation or disassembly, the cooperation between the limiting groove 242 and the limiting block 3113 ensures that the first sealing assembly 3 always maintains the correct angular position, avoiding jamming caused by misalignment of the irregular structure. Especially during repeated installation and use, the anti-rotation design ensures long-term assembly accuracy and sealing reliability. In this embodiment of the invention, the cooperation between the limiting groove and the limiting block provides a reliable anti-rotation constraint for the first sealing assembly 3, ensuring that the irregular structure always maintains the correct relative position, avoiding the decrease in assembly accuracy and sliding failure caused by rotation, and improving the stability and durability of the sealing system.

[0065] like Figure 5 As shown, in some embodiments, the housing 2 is provided with a first snap-fit ​​part 25 around the air outlet 23, and the body 1 is provided with a second snap-fit ​​part 12 around the pusher 11. The second snap-fit ​​part 12 is used to snap the first snap-fit ​​part 25.

[0066] In this invention, a first snap-fit ​​portion 25 is provided on the housing 2 around the air outlet 23, and a second snap-fit ​​portion 12 is provided on the body 1 around the pusher 11. The snap-fit ​​cooperation between the two ensures the reliability of the connection between the sewage tank and the body 1 at the air outlet 23. The reliable connection ensures that the pusher 11 can be accurately aligned with the first sealing component 3, avoiding the situation where the pusher 11 cannot smoothly push open the first sealing component 3 due to looseness or misalignment at the air outlet 23.

[0067] Specifically, the first snap-fit ​​portion 25 and the second snap-fit ​​portion 12 are arranged around their respective core components to form a ring-shaped snap-fit ​​structure. The snap-fit ​​not only provides axial positioning constraints but also radial alignment, ensuring precise alignment between the air outlet 23 and the air duct of the body 1. Guided by the snap-fit ​​structure, the pusher 11 can accurately contact the first sealing assembly 3, ensuring effective transmission of the pushing force.

[0068] In one specific embodiment, if the user encounters angular deviations or incomplete insertion when installing the wastewater tank, the snap-fit ​​structure's guiding function will automatically center and lock the wastewater tank into the correct position. Even if the floor scrubber is subjected to vibration or impact during operation, the snap-fit ​​connection remains stable, preventing airflow leakage or malfunction of the first sealing component 3 due to loosening. The design of the first snap-fit ​​part 25 and the second snap-fit ​​part 12 provides a reliable connection guarantee for the air outlet 23 area, ensuring accurate matching between the pusher 11 and the first sealing component 3, avoiding sealing failure caused by unreliable connection, and improving the stability and reliability of the connection between the wastewater tank and the machine body 1.

[0069] like Figure 6 , 7 As shown in Figures 1 and 10, in some embodiments, the interior of the housing 2 is provided with a connecting ventilation duct 26. The input end of the connecting ventilation duct 26 is connected to the cavity 21, and the output end of the connecting ventilation duct 26 is connected to the air outlet 23. The inner bottom surface of the connecting ventilation duct 26 is gradually raised from the input end to the output end.

[0070] In this invention, a connecting ventilation duct 26 is provided inside the housing 2, with its input end connected to the cavity 21 and its output end connected to the air outlet 23, providing a dedicated transmission channel for airflow and preventing airflow from being directly transmitted through sewage. The inner bottom surface of the connecting ventilation duct 26 is gradually raised from the input end to the output end, allowing a small amount of sewage entering the duct to automatically flow back to the cavity 21 using gravity, preventing sewage from accumulating in the duct and affecting airflow, while also preventing sewage from being discharged through the air outlet and polluting the indoor air.

[0071] Specifically, the ventilation duct 26 is separated from the sewage storage area as an independent airflow channel, avoiding the resistance and pollution caused by the airflow directly contacting the sewage surface. The inclined design of the bottom surface of the duct creates a return slope towards the input end. When a small amount of sewage enters the duct, gravity causes it to flow back along the inclined surface to the cavity 21, keeping the duct dry and clean.

[0072] In one specific embodiment, the floor scrubber generates a strong airflow during the cleaning process. Without a dedicated duct to isolate the airflow, it would pass directly over the wastewater surface, increasing flow resistance, reducing suction efficiency, and causing secondary pollution. The inclined duct design ensures that even if wastewater splashes in, it can be quickly discharged, maintaining unobstructed airflow. The independent design of the ventilation duct 26 and its inclined inner bottom surface effectively isolate the airflow from the wastewater, utilizing gravity to achieve a self-cleaning function for the duct, reducing turbulence and resistance within the duct, and improving the floor scrubber's suction efficiency and the duct's reliability.

[0073] like Figure 3 , 4 As shown in Figures 6 and 7, in some embodiments, a water-blocking rib 27 disposed within the ventilation duct 26 is also included to intercept water droplets that climb the inner surface of the ventilation duct 26.

[0074] In this invention, by setting water-blocking ribs 27 inside the ventilation duct 26, water droplets climbing up the inner surface of the duct are effectively intercepted, preventing water droplets from climbing up the duct wall and entering the air outlet 23. When the airflow passes through the duct, the water droplets it carries will hit the water-blocking ribs 27 and be blocked, falling back to the bottom of the duct under the action of gravity, thus preventing water droplets from entering the internal system of the floor scrubber.

[0075] Specifically, the water-blocking ribs 27 are installed on the inner wall of the air duct as a physical barrier structure, forming a stepped interception surface. When the airflow carrying water droplets passes through the air duct, the water droplets lose their upward kinetic energy after impacting the water-blocking ribs 27 and flow back along the surface of the water-blocking ribs 27 under the action of gravity. The placement and shape of the water-blocking ribs 27 have been optimized to effectively intercept water droplets without causing excessive resistance to the airflow.

[0076] In one specific embodiment, when the floor scrubber is handling a large amount of accumulated water, the airflow will carry a significant number of water droplets. If these droplets enter the air outlet 23, they can damage internal components such as the filter and fan. The presence of the water-blocking ribs 27 provides an effective barrier against these water droplets, protecting the internal system from water intrusion even under high-intensity usage conditions. The water-blocking ribs 27 also provide reliable waterproof protection for the ventilation duct 26, effectively preventing water droplets from rising upwards and protecting the internal system of the floor scrubber from water intrusion, thus improving the equipment's waterproof performance and operational safety.

[0077] In some embodiments, multiple water-blocking ribs 27 are provided, and the multiple water-blocking ribs 27 are arranged alternately.

[0078] In this invention, by setting multiple water-blocking ribs 27 and arranging them in an alternating manner, a multi-level waterproof barrier is formed, which significantly improves the effect of intercepting water droplets. The alternating arrangement causes the airflow to form a tortuous path in the air duct, increasing the chance of water droplets contacting the water-blocking ribs 27. Even if individual water droplets pass through the water-blocking ribs 27 in front, they will be intercepted by the water-blocking ribs 27 in the following ones, greatly reducing the possibility of water droplets reaching the air outlet 23.

[0079] Specifically, multiple water-blocking ribs 27 are distributed in a stepped manner within the air duct, with adjacent ribs 27 arranged in a staggered pattern to avoid forming straight paths. As airflow passes between the water-blocking ribs 27, it is forced to change direction, and water droplets are more likely to collide with the ribs 27 due to inertia. The staggered arrangement also increases the residence time of water droplets within the air duct, which is beneficial for the full utilization of gravity.

[0080] In this embodiment of the invention, the staggered arrangement of multiple water-blocking ribs 27 constructs a complete multi-level waterproof system. By increasing the interception layers and changing the airflow path, it achieves comprehensive and effective interception of water droplets, providing more reliable waterproof protection for the internal system of the floor scrubber.

[0081] like Figure 7 As shown, in some embodiments, the water-blocking ribs 27 located on the bottom surface of the connecting ventilation duct 26 are provided with guide portions 271 at both ends, and the guide portions 271 are bent toward the input end of the connecting ventilation duct 26.

[0082] In this invention, by providing guide portions 271 bent towards the input end at both ends of the water-blocking rib 27 located on the bottom surface of the connecting ventilation duct 26, the water-guiding capacity of the water-blocking rib 27 is enhanced. When water droplets hit the water-blocking rib 27, the guide portions 271 guide the water droplets towards the input end of the connecting ventilation duct 26. Combined with the inclined design of the duct, this promotes faster return of water droplets to the cavity 21 and reduces the retention of water droplets at the root of the water-blocking rib 27.

[0083] Specifically, the guide section 271, as an extension of the water-blocking rib 27, has an optimized bending angle and length to effectively guide the water droplets without causing excessive resistance to the airflow. The guide section 271 bends towards the input end to form a guide channel, providing a clear flow path for the impacted water droplets. Combined with the inclined inner bottom surface of the air duct, it forms a complete drainage system.

[0084] In one specific embodiment, when a large number of water droplets simultaneously impact the water-blocking rib 27, without an effective flow guiding mechanism, the water droplets may accumulate at the base of the water-blocking rib 27, affecting the interception effect of subsequent water droplets or even causing them to be stirred up again. The presence of the flow guiding part 271 ensures that water droplets at each impact point can be discharged quickly and orderly, maintaining the continuous effectiveness of the water-blocking rib 27. The flow guiding part 271 realizes the functional improvement of the water-blocking rib 27 from simple interception to active flow guiding, and together with the inclined design of the air duct, forms a complete water droplet collection and discharge system, improving the self-cleaning ability of the air duct and the continuity of the waterproof effect.

[0085] like Figure 9 , 10 As shown in 11 and 12, in some embodiments, the sewage tank further includes a second sealing component 5, which is rotatably disposed at the air inlet 22 for sealing the air inlet 22; wherein, the second sealing component 5 can be flipped under the action of wind pressure to open the air inlet 22.

[0086] In this invention, a rotatable second sealing component 5 is provided at the air inlet 22, achieving a one-way sealing function for the air inlet 22. When the floor scrubber stops working, the second sealing component 5 seals the air inlet 22 under its own weight or elastic force, preventing backflow of sewage from the wastewater tank or the emission of odors. When the floor scrubber generates negative pressure during operation, the air pressure pushes the second sealing component 5 to flip and open the air inlet 22, allowing for the normal intake of dirt.

[0087] Specifically, the second sealing component 5 uses a rotational mechanism to achieve its opening and closing function, which offers better sealing performance and a longer service life compared to a sliding mechanism. The rotating shaft is typically located on one side of the air inlet 22, allowing the second sealing component 5 to open and close like a door. Wind pressure serves as the driving force source; when a set threshold is reached, the second sealing component 5 is automatically pushed open, achieving a passive-response opening.

[0088] In one specific embodiment, after the user stops cleaning, the negative pressure inside the floor scrubber is released, and the second sealing component 5 immediately closes the air inlet 22, effectively preventing odors from the wastewater tank from spreading outward and avoiding pollution to the indoor environment. Upon restarting, the negative pressure generated by the fan automatically opens the second sealing component 5. The entire process requires no user intervention, ensuring ease of use.

[0089] In related technologies, the air inlet 22 typically adopts a fixed opening design, which cannot prevent odor leakage and sewage backflow when the machine is stopped, affecting the cleanliness of the operating environment and user experience. However, in this embodiment of the invention, the one-way sealing design of the second sealing component 5 not only ensures the normal suction function of the floor scrubber when it is working, but also effectively prevents pollution leakage when the machine is stopped, realizing intelligent control of the air inlet 22 and improving the environmental performance and user experience of the equipment.

[0090] In some embodiments, an air inlet pipe 28 is provided inside the housing 2, and an air inlet 22 is provided at the end of the air inlet pipe 28; the second sealing assembly 5 includes: a flip cover plate 51, which is rotatably disposed at the end of the air inlet pipe 28 having the air inlet 22; a sealing soft rubber 52, which is disposed on the flip cover plate 51 for covering the air inlet 22 to close the air inlet 22; and a torsion spring 53 for driving the flip cover plate 51 to rotate in the direction of closing the air inlet 22.

[0091] In this invention, by setting an air inlet pipe 28 inside the housing 2 and forming an air inlet 22 at its end, the suction point is positioned at a specific location inside the housing 2, which facilitates airflow organization and sewage separation. The combined structure of the flip cover 51, the sealing soft rubber 52, and the torsion spring 53 enables reliable automatic control of the air inlet 22. The flip cover 51 provides the opening and closing action, the sealing soft rubber 52 ensures the sealing effect, and the torsion spring 53 provides a continuous sealing driving force.

[0092] Specifically, the air inlet duct 28 serves as a dedicated air intake channel, and is vertically arranged, with the air inlet 22 located at its top. The flip cover 51 is rotatably mounted on the top of the air inlet duct 28 via a hinge or pivot. Sealing adhesive 52, as a flexible sealing material, is applied to the flip cover 51, conforming to the edge of the air inlet 22 to form a reliable seal. A torsion spring 53 provides torsional elasticity, ensuring that the flip cover 51 remains closed when no external force is applied.

[0093] In one specific embodiment, the end position of the air inlet pipe 28 is designed so that the sucked-in dirt can directly enter the predetermined separation area, improving separation efficiency. When the floor scrubber starts, the negative pressure overcomes the torque of the torsion spring 53 to open the flip cover 51, and the sealing rubber 52 separates from the edge of the air inlet 22 to form an air intake channel. When the machine stops, the torsion spring 53 immediately drives the flip cover 51 to close, and the sealing rubber 52 re-adheres to the air inlet 22 to achieve a seal.

[0094] In some embodiments, the cavity 21 includes a filter chamber 211 located above and a wastewater chamber 212 located below, and the air inlet 22 has an oblique structure and is disposed facing the filter chamber 211.

[0095] In this invention, gas-liquid separation is achieved by dividing the cavity 21 into an upper filter chamber 211 and a lower wastewater chamber 212. The air inlet 22 is designed with an angled structure and faces the filter chamber 211, which not only increases the cross-sectional area of ​​the air inlet 22 but also provides a larger opening space for the flip cover 51. The angled design allows the sucked-in dirt to first enter the filter chamber 211 for preliminary separation, the liquid settles into the wastewater chamber 212 under gravity, and the gas is discharged through the air outlet 23 after filtration.

[0096] Specifically, the filter chamber 211 is located at the top, facilitating gas collection and filtration, while the wastewater chamber 212 is located at the bottom, utilizing gravity to achieve natural sedimentation of the liquid. The angled structure of the air inlet 22 provides a larger opening area compared to a vertical inlet, allowing for better intake of long, thin objects such as hair. The angled design also provides sufficient space for the rotation of the flip cover 51, enabling it to open at a greater angle.

[0097] In one specific embodiment, the floor scrubber needs to simultaneously suck in liquid and solid waste during the cleaning process. The angled air inlet 22 can effectively suck in long, thin pieces of debris such as hair and paper scraps from the ground. These debris enter the filter chamber 211 through the angled inlet and have ample space for separation. Liquid waste loses kinetic energy in the filter chamber 211 and settles into the wastewater chamber 212, achieving effective gas-liquid separation.

[0098] In some embodiments, the width of the air inlet 22 is gradually widened from one end adjacent to the filter chamber 211 to the other end.

[0099] In this invention, the width of the air inlet 22 is designed to gradually widen from one end adjacent to the filter chamber 211 to the other, forming a gradually widening channel that is narrow at the front and wide at the back. The narrower front design facilitates the smooth entry of debris such as hair and sunflower seed shells, while the gradually widening space at the rear effectively prevents these debris from getting stuck and blocked in the rear section, while providing ample space for the debris to unfold and separate.

[0100] Specifically, such as Figure 12 As shown, the filter chamber 211 is located to the right of the air inlet 22. The air inlet 22 is narrower on the right side and gradually widens towards the left. Furthermore, the air inlet 22 is angled, meaning the height of the right end is lower than the left end. This gradual widening design creates a transitional channel from narrow to wide at the air inlet 22. The narrow channel on the right side constricts the airflow and debris, resulting in a higher airflow velocity and preventing blockage. The wider channel on the left provides space for the debris to spread. This geometry is particularly suitable for sucking in long, narrow debris, preventing stagnation caused by a sudden narrowing of the channel. The gradually widening angle also reduces the airflow velocity at the outlet, minimizing debris backflow.

[0101] In this embodiment of the invention, the gradual expansion design effectively solves the problem of clogging of long strip-shaped waste. Through the optimization of the geometry, it achieves smooth suction of waste of various shapes, improves the adaptability and working efficiency of the floor scrubber, and reduces maintenance work caused by blockage.

[0102] like Figure 13 As shown, the present invention also provides a floor scrubbing machine, comprising: a body 1; and the aforementioned wastewater tank.

[0103] In this invention, the floor scrubber achieves complete automatic sealing and pollution prevention functions by integrating the aforementioned wastewater tank. The machine body 1 provides the installation foundation, power connection, and control support for the wastewater tank, enabling rapid assembly and disassembly of the tank and automatic sealing switching. During operation, the machine effectively collects and seals wastewater, and automatically prevents pollution leakage when the machine is stopped or the wastewater tank is disassembled.

[0104] Specifically, the machine body 1 houses core components such as a fan, floor brush, and control system. Dirt swept by the floor brush enters the wastewater tank through the air inlet 22. The wastewater is filtered by a filter, trapping impurities such as hair, while the wastewater is stored in the tank. The wastewater tank is reliably connected to the machine body 1 via a snap-fit ​​structure, and cooperating components such as the pusher 11 ensure the accurate operation of the first sealing assembly 3. The integrated design of the entire machine enables coordinated operation of all subsystems, guaranteeing both cleaning effectiveness and ease of use.

[0105] In one specific embodiment, users only need to focus on the cleaning process itself during daily use, as the sealing control of the wastewater tank is fully automated and requires no additional operation. When the wastewater tank is removed for cleaning after completion, the automatic sealing function prevents wastewater leakage and odor diffusion, protecting the indoor environment. Upon reinstallation, the seal automatically opens, restoring normal operation.

[0106] In some embodiments, the pusher 11 is a HEPA support.

[0107] In this invention, a HEPA filter bracket is used as the pushing component 11, making full use of the existing structural elements on the body 1. The pushing part on the HEPA filter bracket is used to lift the first sealing component 3. The HEPA filter bracket itself, as a supporting structure of the filtration system, has good strength and stability and can provide reliable pushing force to ensure the accurate switching of the first sealing component 3.

[0108] Specifically, the HEPA filter holder, originally used to support filtration components such as HEPA filters, has been structurally enhanced with a push-up component, achieving a design optimization where one component performs two functions. The push-up component can be an extension or additional structure of the HEPA filter holder, its position and shape designed to ensure accurate fit with the first sealing component 3. The fixed installation position of the HEPA filter holder ensures the stability and repeatability of the push-up operation.

[0109] The device embodiments described above are merely illustrative. 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 multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. A wastewater tank, detachably mounted on the body of a floor scrubber; characterized in that, The wastewater tank includes: The housing has a cavity and an air inlet and an air outlet communicating with the cavity. The air inlet is used to draw in the dirt cleaned by the machine body, and the air outlet is used to discharge the gas in the cavity. A first sealing component is slidably disposed at the air outlet along a first direction. The first sealing component has a first state of closing the air outlet and a second state of opening the air outlet. A first elastic element is disposed on the side of the first sealing assembly away from the air outlet, for driving the first sealing assembly to remain in the first state; The body is provided with a pusher. When the housing is installed on the body, the pusher pushes the first sealing component to switch the first sealing component to the second state. The housing is provided with a first guide structure along the first direction, and the first sealing assembly includes: a guide member, the guide member having a second guide structure that slides with the first guide structure; and a first sealing member, disposed at one end of the guide member, for sealing the air outlet.

2. The sewage tank according to claim 1, characterized in that, The first guide structure includes a first guide ring, and the second guide structure includes a second guide ring that slides in conjunction with the first guide ring; The first guide ring and / or the second guide ring are provided with a communicating groove so that the gap between the first guide ring and the second guide ring communicates with the external space.

3. The sewage tank according to claim 1, characterized in that, The housing has a first snap-fit ​​part around the air outlet, and the body has a second snap-fit ​​part around the pusher, the second snap-fit ​​part being used to snap the first snap-fit ​​part.

4. The sewage tank according to claim 1, characterized in that, The interior of the housing is provided with a ventilation duct. The input end of the ventilation duct is connected to the cavity, and the output end of the ventilation duct is connected to the air outlet. The inner bottom surface of the ventilation duct is gradually raised from the input end to the output end.

5. The sewage tank according to claim 4, characterized in that, It also includes water-blocking ribs installed in the connecting ventilation duct to intercept water droplets that climb up the inner surface of the connecting ventilation duct.

6. The sewage tank according to any one of claims 1-5, characterized in that, The wastewater tank also includes a second sealing component, which is rotatably disposed at the air inlet and used to seal the air inlet. The second sealing component can be flipped under wind pressure to open the air inlet.

7. The sewage tank according to claim 6, characterized in that, The housing is provided with an air inlet pipe, and the air inlet is provided at the end of the air inlet pipe; the second sealing assembly includes: A flip-up cover is rotatably disposed at one end of the air inlet pipe having the air inlet; A sealing soft adhesive is provided on the flip-up cover to cover the air inlet and seal the air inlet; A torsion spring is used to drive the flip cover to rotate in the direction of closing the air inlet.

8. The sewage tank according to claim 1, characterized in that, The cavity includes an upper filter chamber and a lower wastewater chamber, and the air inlet has an angled structure and is positioned towards the filter chamber.

9. The sewage tank according to claim 8, characterized in that, The width of the air inlet gradually increases from one end adjacent to the filter chamber to the other end.

10. A floor scrubbing machine, characterized in that, include: Organism; The sewage tank as described in any one of claims 1-9.

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