Sewage tank for cleaning equipment, equipment, system and method

Abstract

The embodiment of the invention provides a sewage tank for cleaning equipment, the equipment, a system and a method. The cleaning equipment comprises a box body, a box cover and a spraying structure, and the box cover is arranged at the top of the box body; at least part of the spraying structure is arranged in the box body and connected with the box cover. The spraying structure is provided with a first flow channel, a second flow channel, a first nozzle and a second nozzle; the first nozzle communicates with the first flow channel, and the first nozzle is used for spraying a first cleaning medium into the box body. And the second nozzle communicates with the second flow channel, and the second nozzle is used for spraying a second cleaning medium into the box body. Through the arrangement of the first nozzle and the second nozzle on the spraying structure, the spraying structure can spray different first cleaning media and second cleaning media through the first nozzle and the second nozzle, the cleaning effect on parts of the cleaning equipment is comprehensively enhanced, and the requirement of people for the self-cleaning effect of the cleaning equipment is met.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to a wastewater tank, equipment, system and method for cleaning equipment. Background Technology

[0002] Floor scrubbers have a removable wastewater tank. When cleaning surfaces, the scrubber sucks up dirt and wastewater from the surface and temporarily stores it in the tank for later cleaning. To facilitate cleaning of the wastewater tank, some existing floor scrubber models have a spray system inside the tank. This system sprays cleaning media into the tank to clean it. However, the wastewater collected in the tank has a complex composition, and a single cleaning media is insufficient to handle multiple types of dirt. For example, heavy oil stains are difficult to remove with regular water, as are sugar stains. The existing spray cleaning function of the wastewater tank cannot meet the needs and urgently requires improvement. Summary of the Invention

[0003] This application provides a wastewater tank, device, system, and method for cleaning equipment, which can improve the cleaning function of the wastewater tank to meet people's increasing demand for the self-cleaning effect of cleaning equipment such as floor scrubbers.

[0004] In a first aspect, embodiments of this application also provide a wastewater tank for a cleaning device, comprising:

[0005] Box;

[0006] The lid is located on the top of the box and is detachably connected to the box body;

[0007] The spraying structure is at least partially disposed inside the housing and connected to the housing cover; the spraying structure has a first flow channel, a second flow channel, a first nozzle and a second nozzle; the first nozzle and the second nozzle both face the inner sidewall of the housing; the first flow channel and the second flow channel form a double-layer flow channel structure.

[0008] The first nozzle is connected to the first flow channel. The first nozzle is used to spray a first cleaning medium into the chamber. The first cleaning medium is cleaning foam. The second nozzle is connected to the second flow channel. The second nozzle is used to spray a second cleaning medium into the chamber. The second cleaning medium is liquid water.

[0009] The wastewater tank of the cleaning equipment provided in this application embodiment features a spraying structure. This structure allows a first cleaning medium to be converted into cleaning foam via a first connecting part, a first flow channel, and a first nozzle to pre-clean the tank body, softening the substances (such as oil) adhering to the inner wall of the tank. Simultaneously, liquid water flows into the tank body via a second connecting part, a second flow channel, and a second nozzle, rinsing the first cleaning medium and the substances adhering to the inner wall of the tank. This effectively removes the substances adhering to the inner wall of the wastewater tank, improving the pre-cleaning effect. Compared to existing spraying structures that spray liquid water, the spraying structure of this application embodiment enhances the pre-cleaning effect of the tank body, meeting the increasingly higher pre-cleaning requirements of floor scrubbers and other cleaning equipment, and improving the user experience.

[0010] In addition, the spraying structure is connected to the cover, allowing users to remove the spraying structure from the box at the same time when removing the cover, without requiring users to disassemble the spraying structure separately, reducing the complexity of operation and further improving the user experience.

[0011] In some embodiments, the spraying structure further includes a first connecting portion, wherein the first connecting portion, a first flow channel, and a first nozzle are connected in sequence; the first connecting portion is at least used to receive a gas-liquid mixture or cleaning foam, wherein the gas-liquid mixture is a mixture of cleaning agent and air;

[0012] The first nozzle is equipped with a foaming filter. When the cleaning medium input to the first connecting part is a gas-liquid mixture, the foaming filter is used to generate cleaning foam; or, when the cleaning medium input to the first connecting part is cleaning foam, the foaming filter is used to increase the density of the cleaning foam.

[0013] With this configuration, when the gas-liquid mixture flows synchronously through the foaming filter, the cleaning liquid is cut into fine droplets by the through-holes of the foaming filter and mixed with air, thereby forming cleaning foam at the first nozzle. When the cleaning medium received by the first docking part is cleaning foam, the multiple through-holes on the foaming filter can perform secondary shearing and compression on the cleaning foam, which can further refine the bubble size of the cleaning foam and increase the number of bubbles per unit volume, thereby forming a denser foam with higher density and enhancing the pre-cleaning effect of the first cleaning medium.

[0014] In some embodiments, the spraying structure further includes a second connecting portion, and the second connecting portion, the second flow channel, and the second nozzle are connected in sequence; the second connecting portion is at least used to receive the second cleaning medium, thereby transmitting the second cleaning medium to the second nozzle through the second connecting portion.

[0015] In some embodiments, the spraying structure further includes two docking parts, the two docking parts including a first docking part and a second docking part, the first docking part, a first connecting part and a first flow channel are connected in sequence, and the first docking part is at least used to receive gas-liquid mixture or cleaning foam delivered from the outside;

[0016] The second docking part, the second connecting part, and the second flow channel are connected in sequence. The second docking part is used to receive the second cleaning medium delivered from the outside.

[0017] In this configuration, the first docking section is interconnected with the first connecting section via a first connecting pipe. The first docking section is at least used to receive gas-liquid mixtures or cleaning foam delivered from the outside, so that the gas-liquid mixtures or cleaning foams flow to the first connecting section. The second docking section is interconnected with the second connecting section via a second connecting pipe. The second docking section is at least used to receive a second cleaning medium delivered from the outside, so that the second nozzle sprays the second cleaning medium into the housing.

[0018] In some embodiments, the spraying structure further includes a docking section, which is at least used to receive a second cleaning medium or gas-liquid mixture or cleaning foam delivered from the outside;

[0019] The docking section can be selectively connected to the first or second connecting section via an internal three-way control valve. When the docking section receives a gas-liquid mixture or cleaning foam, the docking section is connected to the first connecting section; when the docking section receives a second cleaning medium, the docking section is connected to the second connecting section.

[0020] This design allows a single docking unit to switch between the input requirements of the first and second cleaning media, simplifying the interface structure. When cleaning foam is needed, the docking unit guides the gas-liquid mixture to the first flow channel, where it is sprayed through the first nozzle. When liquid water rinsing is required, the docking unit guides the second cleaning medium to the second flow channel, where it is rinsed through the second nozzle. This reduces the number of interfaces, improves the integration of the wastewater tank, and reduces the complexity of user operation, thereby enhancing the user experience.

[0021] In some embodiments, the spraying structure is an annular component, with multiple first and second nozzles arranged alternately on the circumferential outer wall of the spraying structure. This increases the spray range of the first and second nozzles, enabling full circumferential coverage of the inner wall of the wastewater tank, avoiding cleaning dead corners caused by uneven layout of the first flow channel, preventing cleaning foam residue, and ensuring pre-cleaning effect.

[0022] In some embodiments, both the first nozzle and the second nozzle face the inner wall of the top of the housing and have a gap between them.

[0023] This design allows the spray structure to fully utilize the radial space of the housing, enabling the installation of spray structures with larger outer diameters. This allows for an increase in the number of first nozzles, ensuring that the first cleaning medium effectively reaches the inner wall of the housing. Simultaneously, the smaller gap shortens the spray path of the first cleaning medium, reducing its contact time with air and maintaining its impact force, ensuring that the first cleaning medium still possesses sufficient kinetic energy to achieve effective cleaning upon reaching the inner wall of the housing.

[0024] In some embodiments, the spraying structure includes a first cover, an intermediate spraying component, and a second cover. The first cover and the second cover are located on opposite sides of the intermediate spraying component. The first cover and the intermediate spraying component are assembled to form a first flow channel, and the second cover and the intermediate spraying component are assembled to form a second flow channel.

[0025] The first nozzle and the second nozzle are disposed in the intermediate spraying component. The first nozzle is connected to the first flow channel and is used to spray the first cleaning medium. The second nozzle is connected to the second flow channel and is used to spray the second cleaning medium.

[0026] By configuring the first and second nozzles on the intermediate spray component, the spraying structure can spray different first and second cleaning media through the first and second nozzles. Furthermore, since the first cover, intermediate spray component, and second cover are three independent structural components, they are assembled to form the first and second flow channels, eliminating the need for an internally integrated flow channel, significantly reducing the difficulty of the injection molding process. Moreover, by unifying the first and second nozzles onto the intermediate spray component, the first and second covers do not require openings, allowing for thinner designs. This significantly reduces the overall thickness of the spraying structure, resulting in a thinner profile. This allows the narrow, thin spraying structure to easily adapt to confined installation environments in cleaning equipment.

[0027] The spraying structure provided in this application embodiment can be positioned at different locations to clean different corresponding components of the cleaning equipment. For example, when the spraying structure is installed inside the wastewater tank of the cleaning equipment, the wastewater tank can be cleaned. First, a first cleaning medium (such as cleaning foam) sprayed through the first nozzle softens the cleaning material adhering to the inner wall of the wastewater tank. Then, a second cleaning medium (such as liquid water) sprayed through the second nozzle washes away the cleaning material adhering to the inner wall of the wastewater tank, thereby improving the pre-cleaning effect of the wastewater tank. Alternatively, when the spraying structure is installed on the floor brush component of the cleaning equipment, the nozzles of the spraying structure face the inner roller brush of the floor brush for cleaning. First, a first cleaning medium (such as steam) sprayed through the first nozzle dissolves the cleaning material adhering to the roller brush. Then, a second cleaning medium (such as liquid water) sprayed through the second nozzle washes away the stubborn cleaning material, thereby improving the cleaning effect on the roller brush.

[0028] In some embodiments, the bottom of the intermediate spraying component has a first mating portion, and the top of the first cover has a first mounting portion. One of the first mating portion and the first mounting portion is inserted into the other to achieve the insertion of the bottom of the intermediate spraying component and the top of the first cover.

[0029] The top of the intermediate spray component has a second mounting part, and the bottom of the second cover component has a second mating part. One of the second mating part and the second mounting part is inserted into the other to achieve the insertion of the top of the intermediate spray component and the bottom of the second cover component.

[0030] The outlet sides of both the first and second nozzles are located on the outer side wall of the intermediate spray element.

[0031] This configuration ensures the stability of the connection between the first cover, the intermediate spray component, and the second cover. Through the insertion of the bottom of the intermediate spray component with the top of the first cover and the insertion of the top of the intermediate spray component with the bottom of the second cover, when the first and second flow channels are impacted by the cleaning medium, the axial constraint formed by the insertion can prevent relative displacement or loosening of the first cover, the intermediate spray component, and the second cover. Furthermore, it can achieve a good sealing and leak-proof effect.

[0032] In some embodiments, the main body of the first cover is a first substrate, the main body of the intermediate spraying component is an intermediate substrate, and the main body of the second cover is a second substrate.

[0033] The first substrate has a first mounting part on its top surface, and the first mounting part forms two first protrusions with a certain distance between them on the top surface of the first substrate.

[0034] The bottom surface of the intermediate substrate has a first mating part, and the first mating part forms two first grooves with a certain distance between them on the bottom surface of the intermediate substrate; the bottom surface of the intermediate substrate has a first flow channel groove between the two first grooves.

[0035] The top surface of the intermediate substrate has a second mounting part, and the second mounting part forms two second protrusions with a certain distance between them on the top surface of the intermediate substrate.

[0036] The bottom surface of the second substrate has a second mating part, and the second mating part forms two second grooves with a certain distance between them on the bottom surface of the second substrate. The bottom surface of the second substrate has a second flow channel groove between the two second grooves.

[0037] Two first protrusions and two first grooves are inserted into each other, so that the first flow channel groove and the top surface of the first substrate form a first flow channel; two second protrusions and two second grooves are inserted into each other, so that the second flow channel groove and the top surface of the intermediate substrate form a second flow channel.

[0038] In this configuration, the two first protrusions and two first grooves are correspondingly inserted and engaged, forming a first flow channel with the top surface of the first substrate, allowing the first cleaning medium to flow through. Simultaneously, sufficient space is reserved for the installation of the first nozzle. Because the two first protrusions and two first grooves are correspondingly inserted and engaged, forming two sets of curved contact surfaces located on both sides of the first flow channel, they create a mechanical barrier, constraining the flow path of the first cleaning medium. This prevents the first cleaning medium from escaping towards the assembly interface while ensuring the stability of the connection between the first substrate and the intermediate substrate.

[0039] Similarly, the two second protrusions and two second grooves are correspondingly inserted and engaged, forming a second flow channel with the top surface of the intermediate substrate to allow the second cleaning medium to flow through. This also provides sufficient space for the installation of the second nozzle. Because the two second protrusions and two second grooves are correspondingly inserted and engaged, forming two sets of curved contact surfaces located on either side of the first flow channel, they create a mechanical barrier, constraining the flow path of the second cleaning medium. This prevents the second cleaning medium from escaping towards the assembly interface while ensuring the stability of the connection between the second substrate and the intermediate substrate.

[0040] In addition, since the spraying structure uses a plug-in fit, the first and second cover pieces only need to maintain the thickness that forms the first and second flow channels, without the need for openings. Therefore, a thin-walled structure can be adopted, which can further reduce the thickness of the spraying structure, achieve compactness and lightweighting, and make the spraying structure adaptable to installation environments with limited space.

[0041] In some embodiments, the first cover, the intermediate spraying component, and the second cover are all annular components, which are assembled in sequence and fit tightly together. The thickness of the exposed surface on the outer side of the spraying structure is equal to the sum of the thicknesses of the first substrate, the first protrusion, the intermediate substrate, the second protrusion, and the second substrate.

[0042] The first nozzle and the second nozzle have a safe thickness for the thinnest side opening of the substrate during the manufacturing process. The larger of the safe thicknesses of the first nozzle and the second nozzle is denoted as x, and the smaller one is denoted as y.

[0043] The thickness of the intermediate substrate is [x, 2x), and the thicknesses of the first substrate and the second substrate are both less than y.

[0044] This design ensures that the intermediate substrate has sufficient structural strength around the first and second nozzles, while avoiding material waste due to excessive thickness of the first substrate, thus guaranteeing a lightweight spraying structure. Furthermore, the thickness of both the first and second substrates is less than y, reducing the weight and material cost of the spraying structure. Reducing the thickness of the spraying structure allows it to be adapted to installation environments with limited space.

[0045] In some embodiments, the inlet end of the first nozzle is connected to the portion of the first flow channel located in the intermediate spraying element to form a first branch, so that the first cleaning medium can flow into the first branch through the first flow channel and be sprayed out from the first nozzle; the inlet end of the second nozzle is connected to the portion of the second flow channel located in the intermediate spraying element to form a second branch, so that the second cleaning medium can flow into the second branch through the second flow channel and be sprayed out from the second nozzle; the first branch and the second branch are located between the first flow channel and the second flow channel. By limiting the positions of the first nozzle corresponding to the first branch and the second nozzle corresponding to the second branch, the thickness of the intermediate spraying element can be further fully utilized without occupying additional space.

[0046] In some embodiments, the height difference between the center of the first nozzle at the outlet end and the center of the second nozzle at the outlet end is less than 1 mm. This is beneficial for the first cleaning medium and the second cleaning medium to be sprayed out from the same height, so that the coverage areas of the first cleaning medium and the second cleaning medium are the same or similar. While ensuring the pre-cleaning effect, it can also make the structure of the intermediate spraying component more compact in the thickness direction, reduce the thickness requirement, and facilitate weight reduction.

[0047] In some embodiments, there are multiple first nozzles and multiple second nozzles, and the first nozzles and the second nozzles are alternately arranged on the intermediate spraying component.

[0048] With this configuration, when the spraying structure is in operation, the first nozzle first sprays the first cleaning medium, so that the first cleaning medium evenly covers the inner wall of the sewage tank. Then, the second nozzle sprays the second cleaning medium to rinse the first cleaning medium and the attached objects to be cleaned. By limiting the number and arrangement (alternating) of the first and second nozzles, the spraying range of the first and second nozzles can be increased to achieve full circumferential coverage of the inner wall of the sewage tank, avoid cleaning dead corners caused by uneven layout of the first and second flow channels, avoid residue of objects to be cleaned, and ensure the pre-cleaning effect.

[0049] In some embodiments, the outlet end of the first nozzle is a circular hole with a diameter of 0.6-1.5 mm. This allows for the formation of a jet with sufficient impact force and directionality to achieve effective cleaning while avoiding clogging of the first nozzle.

[0050] The outlet end of the second nozzle is a strip-shaped hole that extends along the direction of the adjacent first nozzle. The length of the strip-shaped hole is 3-9mm and the width is 0.3-0.7mm. This can prevent the second nozzle from being blocked while making the second cleaning medium form a strip-shaped jet with a moderate diffusion range and uniform impact force, ensuring the coverage of the area to be cleaned by the second cleaning medium, thereby ensuring the cleaning effect.

[0051] The distance between the outlet end of the first nozzle and the outlet end of the second nozzle is 0.8-1.5mm. This ensures that the second cleaning medium sprayed from the second nozzle covers the first cleaning medium sprayed from the first nozzle, while avoiding excessive overlap and waste of the second cleaning medium and the problem of cleaning blind spots, thus improving the pre-cleaning effect.

[0052] In some embodiments, the spraying structure is annular, and at least one of the first and second channels forms an annular channel along the circumference of the spraying structure. This allows the first and second cleaning media to be evenly distributed along the circumference of the intermediate spraying element, thereby achieving full circumferential coverage of the inner wall of the sewage tank and avoiding cleaning dead zones caused by uneven layout of the first and second channels.

[0053] In some embodiments, the wastewater tank further includes a sealing element disposed on the tank cover for forming a circumferential seal between the tank cover and the tank body; when the tank cover is assembled on the tank body, the sealing element presses against the inner sidewall of the tank body.

[0054] The spraying structure is adjacent to the sealing element, and the first and second nozzles in the spraying structure are close to the lower side of the sealing element, so that the cleaning medium sprayed by the first and second nozzles can reach the sealing element position around it on the inner side wall of the box for cleaning.

[0055] With this setup, the cleaning medium ejected from the first and second nozzles will be sprayed onto the inner wall of the chamber under the action of spray pressure. The cleaning medium will spread a certain distance in all directions on the inner wall of the chamber under the action of initial velocity and pressure before flowing downward. Since the spread range of the cleaning medium under the action of initial velocity and pressure is limited, the first and second nozzles need to be as close as possible to the seal to ensure that the area near the seal above the nozzles can also be cleaned.

[0056] In some embodiments, the second cover is connected to the bottom end of the box lid, or the second cover is integrally formed on the bottom end of the box lid.

[0057] This design allows the spraying structure to be connected to the bottom of the tank cover via the second cover. Furthermore, when the second cover is integrally formed at the bottom of the tank cover, it enhances the connection strength between the spraying structure and the tank cover, preventing components from loosening due to vibration during cleaning.

[0058] In some embodiments, the first nozzle and the second nozzle are alternately arranged on the intermediate spraying component, and the spraying area of ​​the second nozzle on the inner wall of the tank covers at least the spraying area of ​​the adjacent first nozzle on the inner wall of the tank. This increases the spraying range of the first nozzle and the second nozzle, so that the spraying trajectory of the first nozzle and the second nozzle can cover the inner wall of the sewage tank, avoid cleaning dead corners, and ensure cleaning efficiency.

[0059] Secondly, embodiments of this application provide a cleaning device, comprising:

[0060] The main unit is equipped with a controller, a first liquid storage tank and a second liquid storage tank. The first liquid storage tank and the second liquid storage tank are used to store cleaning media or liquids that can generate predetermined cleaning media.

[0061] The wastewater tank is as described above, and is installed on the main unit; the first flow channel in the spray structure is connected to the first liquid storage tank through a pipeline, and the second flow channel in the spray structure is connected to the second liquid storage tank through a pipeline.

[0062] A first driving device is used to drive the cleaning medium in the first storage tank to be input into the first flow channel;

[0063] The second drive unit is used to drive the cleaning medium in the second storage tank to be input into the second flow channel;

[0064] The controller is used to control the first drive unit and the second drive unit.

[0065] The cleaning equipment provided in this application embodiment has the above-mentioned sewage tank, and therefore has the beneficial effects of the sewage tank, enabling automated pre-cleaning of the sewage tank without requiring users to repeatedly scrub the sewage tank, thus improving the user experience.

[0066] Thirdly, embodiments of this application also provide a cleaning system, including:

[0067] Host;

[0068] The base station is used to charge the host, and the host can interface with the base station; the base station includes a sewage receiving part, a first liquid storage tank and a second liquid storage tank, the first liquid storage tank and the second liquid storage tank are used to store cleaning media or liquids that can generate predetermined cleaning media;

[0069] The wastewater tank, as described above, is installed on the main unit; the bottom of the wastewater tank is equipped with a drain valve. When the main unit is connected to the base station, the first flow channel in the spray structure is connected to the first liquid storage tank through a pipeline, the second flow channel in the spray structure is connected to the second liquid storage tank through a pipeline, and the drain receiving part is connected to the drain valve.

[0070] A first driving device is used to drive the cleaning medium in the first storage tank to be input into the first flow channel;

[0071] The second drive unit is used to drive the cleaning medium in the second storage tank to be input into the second flow channel;

[0072] The host or base station is equipped with a controller, which is used to control the first drive device and the second drive device.

[0073] The cleaning system provided in this application embodiment has the aforementioned wastewater tank, and therefore has the beneficial effects of the aforementioned wastewater tank. It can perform automated pre-cleaning of the wastewater tank, eliminating the need for users to repeatedly scrub the wastewater tank and improving the user experience.

[0074] Fourthly, this application embodiment also provides another method for cleaning a sewage tank, applied to a cleaning system. The cleaning system includes a host, a base station, a sewage tank, a first driving device, and a second driving device. The base station is used to charge the host, and the host can interface with the base station. The base station has a sewage receiving part.

[0075] The wastewater tank is installed on the main unit and includes a tank body, a tank cover, and a spraying structure. The tank cover is located on the top of the tank body. At least part of the spraying structure is located inside the tank body. The spraying structure has a first flow channel, a second flow channel, a first nozzle, and a second nozzle. The first nozzle is connected to the first flow channel and is used to spray a first cleaning medium, which is cleaning foam, into the tank body. The second nozzle is connected to the second flow channel and is used to spray a second cleaning medium, which is liquid water, into the tank body. A drain valve is also provided at the bottom of the wastewater tank, and a drain receiving part is connected to the drain valve.

[0076] The host or base station has a controller, which controls a first driving device and a second driving device. The first driving device drives a first cleaning medium to be input into a first flow channel; the second driving device drives a second cleaning medium to be input into a second flow channel.

[0077] The wastewater tank cleaning method includes the following steps:

[0078] Triggered by the sewage tank cleaning command, the controller controls the first driving device and the second driving device to first execute the first spraying action and then execute the second spraying action. The first spraying action is the first driving device driving the first cleaning medium to spray out from the first nozzle, and the second spraying action is the second driving device driving the second cleaning medium to spray out from the second nozzle.

[0079] The wastewater tank cleaning method provided in this application embodiment, through the arrangement of a first nozzle and a second nozzle on the spray structure, allows the spray structure to sequentially spray a first cleaning medium and a second cleaning medium into the wastewater tank through the first nozzle and the second nozzle. The first cleaning medium sprayed through the first nozzle softens the substances adhering to the inner wall of the wastewater tank, and then the second cleaning medium sprayed through the second nozzle washes away both the first cleaning medium and the inner wall of the wastewater tank, thus effectively rinsing away the substances adhering to the inner wall of the wastewater tank and improving the pre-cleaning effect of the wastewater tank. Therefore, when the spray structure is applied to the wastewater tank of cleaning equipment (such as a floor scrubber), it can improve the pre-cleaning effect of the wastewater tank, meeting the increasingly higher pre-cleaning requirements of people for cleaning equipment such as floor scrubbers, thereby improving the user experience.

[0080] In some embodiments, after the first spraying action is completed, a preset time interval is required before the second spraying action can be performed. This avoids potential interference between the first and second cleaning media and significantly improves the softening degree of the object to be cleaned by extending the softening time. The adhesion of the object to be cleaned is greatly reduced after sufficient softening, thereby enabling the second cleaning media to completely remove it with lower energy consumption and shorter time during subsequent rinsing. This significantly improves the overall cleaning effect of the wastewater tank while ensuring the efficiency of the cleaning media.

[0081] In some embodiments, a pretreatment action is performed before the first spraying action. The pretreatment action is the second spraying action. This pretreatment action washes away the cleaners that are easier to rinse from the wastewater tank and also wets the stubborn cleaners attached to the inner wall of the wastewater tank, providing an optimized basis for subsequent cleaning processes. This ensures the cleaning effect while reducing the consumption of the first cleaning medium. Attached Figure Description

[0082] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0083] Figure 1 A schematic diagram of the cleaning equipment provided for embodiments of this application is given. Figure 1 ;

[0084] Figure 2 Schematic diagram of the cleaning equipment provided in the embodiments of this application Figure 2 ;

[0085] Figure 3 for Figure 1 Schematic diagram of the structure of the wastewater tank;

[0086] Figure 4 for Figure 3 A partial cross-sectional schematic diagram of the wastewater tank along the AA direction;

[0087] Figure 5 for Figure 3 A partial cross-sectional schematic diagram of the wastewater tank along the BB direction;

[0088] Figure 6 for Figure 1 A schematic diagram of the spraying structure;

[0089] Figure 7 for Figure 6 Explosion diagram of the spray structure;

[0090] Figure 8 for Figure 6 A schematic diagram of the cross-section of the spray structure along the EE direction;

[0091] Figure 9 for Figure 6 A schematic diagram of the cross-section of the spray structure along the CC direction;

[0092] Figure 10 for Figure 9 An enlarged schematic diagram of part A in the middle;

[0093] Figure 11 for Figure 6 A schematic diagram of the cross-section of the spray structure along the DD direction;

[0094] Figure 12 for Figure 11 Enlarged schematic diagram of part B in the middle;

[0095] Figure 13 for Figure 11An enlarged schematic diagram of section C;

[0096] Figure 14 for Figure 6 A schematic diagram of the cross-section of the spray structure along the FF direction.

[0097] Figure label:

[0098] 100 - Cleaning equipment;

[0099] 10-Spraying structure;

[0100] 20-Sewage tank; 201-Tank body; 202-Tank cover; 203-Sealing component;

[0101] 30 - Main unit; 301 - First conduit; 302 - Second conduit;

[0102] 1-First cover; 11-First flow channel; 12-First assembly part; 13-First substrate;

[0103] 2-Second cover; 21-Second flow channel; 22-Second mating part; 23-Second substrate;

[0104] 3-Intermediate spray component; 31-First nozzle; 311-First branch; 32-Second nozzle; 321-Second branch; 33-First mating part; 34-Second assembly part; 35-Intermediate substrate;

[0105] 4-First connecting part;

[0106] 5-Second connecting part;

[0107] 6-First docking section;

[0108] 7-Second docking section;

[0109] 8-First connecting tube;

[0110] 9-Second connecting tube. Detailed Implementation

[0111] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0112] This application provides a spraying structure, wastewater tank, equipment, system, and cleaning method for cleaning equipment. The cleaning equipment may include floor scrubbers, vacuum cleaners, robotic vacuum cleaners, and other devices capable of cleaning surfaces. For example, the surface to be cleaned may be a floor. The following description primarily uses a floor scrubber as an example, illustrating the structure of the cleaning equipment in a scenario where the floor scrubber cleans the floor.

[0113] This application provides a cleaning system, which includes a cleaning device and a base station. The base station provides a charging interface for the cleaning device. Simultaneously, when the cleaning device is placed inside the base station, the base station can establish an electrical and communication connection with the cleaning device, triggering the cleaning device to perform a self-cleaning function.

[0114] Figure 1 A schematic diagram of the structure of a cleaning device 100 is provided for an embodiment of this application.

[0115] Please refer to Figure 1 Specifically, the cleaning device 100 includes a main unit with wheels at the bottom and a handle at the top. The handle is located at the end of the main unit away from the surface to be cleaned, so that the user can hold it and push the cleaning device 100 to clean the surface.

[0116] The cleaning device 100 also includes a floor brush assembly located at the bottom of the main unit. The floor brush assembly includes a mounting base and a roller brush. The mounting base is rotatably mounted at the bottom of the main unit, and the roller brush is located on the side of the mounting base facing the surface to be cleaned. When the roller brush rotates relative to the mounting base, the roller can contact the surface to be cleaned, thereby cleaning the surface. Furthermore, during the cleaning process, the main unit also sprays liquid water onto the roller brush or the surface to be cleaned, so that the roller brush can remove stubborn stains on the surface as it rotates. This results in the cleaning device 100 generating wastewater during the cleaning process.

[0117] The main unit is also equipped with a removable wastewater tank. When the cleaning equipment 100 is cleaning a surface, the main unit can suck up the items to be cleaned and the wastewater generated during operation and temporarily store them in the wastewater tank for unified cleaning. Items to be cleaned can include paper scraps, food crumbs, and small, soft debris. Small, soft debris can include, but is not limited to, hair. For example, small, soft debris can also include cotton thread.

[0118] To achieve cleaning of the wastewater tank, a spraying structure is typically installed inside. This structure sprays cleaning media into the tank, thus cleaning it. With continuous technological advancements, the pre-cleaning effectiveness of cleaning equipment such as floor scrubbers is becoming increasingly demanding. The self-cleaning function of cleaning equipment 100 includes the cleaning function of the wastewater tank.

[0119] However, the cleaning function of existing sewage tanks cannot meet people's needs, indicating that there is room for improvement in the self-cleaning function of sewage tanks. This is because the spray structure inside existing sewage tanks typically only sprays one cleaning medium, namely liquid water. However, the composition of the substances collected in the sewage tank is complex, and a single cleaning medium is difficult to handle multiple types of substances. For example, heavy oil and sugar residues adhering to the sewage tank are difficult to remove with regular water, and similarly, sugar residues cannot be removed by regular water. This makes it difficult to effectively clean stubborn residues on the inner walls of the sewage tank, limiting the pre-cleaning effect of existing sewage tanks. Users still need to painstakingly scrub the sewage tank after pre-cleaning, making the spray cleaning function of existing sewage tanks insufficient to meet people's needs and urgently requiring further improvement.

[0120] In view of this, this embodiment provides a spraying structure for a cleaning device, which has a flow channel and a nozzle. At least one cleaning medium can be sprayed through the nozzle, making it easy to remove the objects to be cleaned adhering to the inner side wall of the wastewater tank. When the spraying structure is applied to the wastewater tank of a cleaning device, it can enhance the pre-cleaning effect of the wastewater tank, eliminating the need for users to laboriously wash the wastewater tank, thereby improving the cleaning function of the wastewater tank. This is to meet people's increasingly higher demand for pre-cleaning effects from cleaning equipment such as floor scrubbers, and thus improve the user experience.

[0121] The spraying structure of the cleaning equipment will be further described below with reference to the accompanying drawings and embodiments.

[0122] Figure 3 for Figure 1 Schematic diagram of the structure of the wastewater tank 20. Figure 6 for Figure 1 A schematic diagram of the spraying structure 10. Figure 7 for Figure 6 An explosion diagram of the spray structure 10.

[0123] Please refer to Figure 3 , Figure 6 and Figure 7 This embodiment provides a spraying structure 10 for cleaning equipment, including a first cover 1, an intermediate spraying component 3, and a second cover 2.

[0124] The first cover 1 and the second cover 2 are located on opposite sides of the intermediate spraying component 3. The first cover 1 and the intermediate spraying component 3 are assembled to form a first flow channel 11, and the second cover 2 and the intermediate spraying component 3 are assembled to form a second flow channel 21. The intermediate spraying component 3 has a first nozzle 31 and a second nozzle 32. The first nozzle 31 is connected to the first flow channel 11 and is used to spray a first cleaning medium. The second nozzle 32 is connected to the second flow channel 21 and is used to spray a second cleaning medium.

[0125] Specifically, this embodiment does not limit the specific application scenarios of the spraying structure 10, and can make an adaptive selection according to actual needs.

[0126] In some embodiments, the spray structure 10 is used to clean components of the cleaning equipment 100. For example, components of the cleaning equipment 100 may include a wastewater tank 20 or a roller brush. By changing the different position settings of the spray structure 10, different corresponding components of the cleaning equipment 100 can be cleaned.

[0127] Please refer to Figure 3 , Figure 6 and Figure 7 In one exemplary embodiment, when the spraying structure 10 cleans the wastewater tank 20, the spraying structure 10 is disposed inside the wastewater tank 20 of the cleaning equipment.

[0128] In another exemplary embodiment, the spraying structure 10 is disposed on the floor brush assembly of the cleaning device 100, and the nozzle of the spraying structure 10 is directed toward the roller brush inside the floor brush assembly to clean the roller brush.

[0129] In other embodiments, the spraying structure 10 is disposed on the cleaning device 100, and the nozzle of the spraying structure 10 is directed toward the surface to be cleaned, so as to spray the first cleaning medium and the second cleaning medium onto the surface to be cleaned, thereby enhancing the cleaning effect of the cleaning device 100 on the surface to be cleaned.

[0130] In some embodiments, the first cleaning medium and the second cleaning medium are not exactly the same, and the first cleaning medium and the second cleaning medium are one or a mixture of foam, room temperature water, hot water, steam, and cleaning agents.

[0131] Specifically, some cleaning media are suitable for dissolving the object to be cleaned but not for rinsing, such as cleaning foam, while others are suitable for rinsing but not for dissolving the object to be cleaned, such as liquid water. Therefore, the spraying structure 10 provided in this embodiment, through the arrangement of the first nozzle 31 and the second nozzle 32, enables the spraying structure 10 to spray different first and second cleaning media through the first nozzle 31 and the second nozzle 32. Thus, through the combined spraying of the first and second cleaning media, the spraying structure 10 can adapt to cleaning more types of objects to be cleaned and application scenarios, thereby improving the cleaning effect.

[0132] For example, when the spray structure 10 cleans the ground, the first cleaning medium can be steam and the second cleaning medium can be cleaning foam. The steam can soften the object to be cleaned, melt the grease and inactivate the microorganisms through high temperature. The cleaning foam can penetrate, emulsify and disperse the object to be cleaned. The synergistic effect of steam and cleaning foam can improve the removal efficiency of stubborn objects to be cleaned.

[0133] For example, when the spray structure 10 cleans the roller brush, the first cleaning medium can be steam and the second cleaning medium can be cleaning foam, or the first cleaning medium is cleaning foam and the second cleaning medium can be liquid water.

[0134] When the first cleaning medium is steam and the second cleaning medium is cleaning foam, the steam acts first on the gaps between the roller brush fibers, softening the adhesive substances to be cleaned and denaturing the microbial structure through thermodynamic effects, and enhancing the permeability of the subsequent second cleaning medium. The cleaning foam can penetrate, emulsify, and disperse the substances to be cleaned on the surface of the roller brush, thereby improving the removal efficiency of stubborn substances through the synergistic effect of steam and cleaning foam.

[0135] When the first cleaning medium is cleaning foam and the second cleaning medium is liquid water, the cleaning foam can first directionally adsorb and decompose the grease and other substances to be cleaned on the surface of the roller brush. Then, by rinsing the surface of the roller brush with liquid water, the residual cleaning foam and the emulsified substances to be cleaned are removed, thereby cleaning the roller brush.

[0136] For example, when the spraying structure 10 cleans the sewage tank 20, the first cleaning medium flows through the first flow channel 11 to the first nozzle 31, and the second cleaning medium flows through the second flow channel 21 to the second nozzle 32. Thus, the first cleaning medium and the second cleaning medium are sprayed into the sewage tank 20 in sequence through the first nozzle 31 and the second nozzle 32. This allows the first cleaning medium to soften the cleaning material attached to the inner wall of the sewage tank 20, and then the second cleaning medium sprayed through the second nozzle 32 washes away the first cleaning medium and the inner wall of the sewage tank 20. This can better wash away the cleaning material attached to the inner wall of the sewage tank 20, prevent the cleaning material from lingering and fermenting and producing odors, thereby improving the pre-cleaning effect of the sewage tank 20. Compared to existing spray structures that spray liquid water, the spray structure 10 of this application embodiment, when applied to the wastewater tank 20 of cleaning equipment (such as a floor scrubber), can enhance the pre-cleaning effect of the wastewater tank 20. After the pre-cleaning effect is completed, the user does not need to clean the wastewater tank 20, or can simply clean the wastewater tank 20 without having to scrub it. This can improve the cleaning function of the wastewater tank 20, so as to meet people's increasingly high requirements for the pre-cleaning effect of cleaning equipment such as floor scrubbers, thereby improving the user experience.

[0137] It should be noted that this embodiment does not impose any restrictions on the first and second cleaning media, and can be adapted to meet actual needs.

[0138] In addition, different cleaning media require different nozzle parameters. For example, cleaning foam, due to its high viscosity and tendency to generate bubbles, requires nozzles with larger orifice diameters and lower flow resistance to ensure that the foam can spread fully and cover evenly. Liquid water, on the other hand, requires nozzles with smaller orifice diameters and higher jet concentration to form a powerful jet that can effectively wash away the object to be cleaned.

[0139] Therefore, in this embodiment, the first nozzle is used to spray the first cleaning medium, and the second nozzle is used to spray the second cleaning medium. By adapting the nozzles to the cleaning medium, the cleaning effect of the spraying structure 10 on the components of the cleaning equipment 100 or the surface to be cleaned can be enhanced. At the same time, by combining the first cleaning medium and the cleaning medium for spraying, the total consumption of the cleaning medium can also be reduced.

[0140] Furthermore, in this embodiment, since the first cover 1, the intermediate spraying component 3, and the second cover 2 are three independent structural components, the first flow channel 11 and the second flow channel 21 are formed by assembling these three structural components. This eliminates the need for integral molding of the internal flow channels within a single structural component, significantly reducing the difficulty of the injection molding process. Moreover, by uniformly opening the first nozzle 31 and the second nozzle 32 on the intermediate spraying component 3, the first cover 1 and the second cover 2 do not require openings, allowing for a thinner design of the first cover 1 and the second cover 2. This significantly reduces the overall thickness of the spraying structure 10, resulting in a thinner spraying structure 10. This allows the narrow and thin spraying structure 10 to easily adapt to confined installation environments when the installation space in the cleaning equipment 100 is limited.

[0141] The following text mainly uses the cleaning of the sewage tank by the spray structure 10 as an example to explain the structure of the spray structure 10 and its installation in the sewage tank 20.

[0142] Figure 3 for Figure 1 Schematic diagram of the structure of the wastewater tank 20. Figure 4 for Figure 3 A partial cross-sectional diagram of the wastewater tank 20 along the AA direction. Figure 5 for Figure 3 A partial cross-sectional diagram of the wastewater tank 20 along the BB direction.

[0143] Please refer to Figures 3 to 7In some embodiments, the first cover 1 is a bottom cover, with its top fitted to the bottom of the intermediate spraying component 3, and the top of the first cover 1 and the bottom of the intermediate spraying component 3 together defining the first flow channel 11. The second cover 2 is a top cover, with its bottom fitted to the top of the intermediate spraying component 3, and the bottom of the second cover 2 and the top of the intermediate spraying component 3 together defining the second flow channel 21. This allows the first flow channel 11 and the second flow channel 21 to be spatially isolated from each other, preventing the first cleaning medium and the second cleaning medium from mixing during transport, and ensuring the purity of the cleaning medium sprayed from the first nozzle 31 and the second nozzle 32.

[0144] It should be noted that the terms "top" and "bottom" mentioned above are only used to describe the relative assembly relationship of the first cover 1, the second cover 2, and the intermediate spraying component 3 in this embodiment, and are not restrictions on the actual installation orientation. In practical applications, the spraying structure 10 can be arranged by angular rotation according to the needs of the installation space. For example, when the spraying structure 10 is applied to the sewage tank 20, the "top" can face diagonally upward, and the "bottom" can face diagonally downward, thereby adapting to different installation environments within the cleaning equipment 100.

[0145] Please refer to Figure 3 , Figure 6 and Figure 7 In some embodiments, along the direction from the top to the bottom of the intermediate spraying member 3, the first flow channel 11 and the second flow channel 21 are arranged opposite to each other, with the first flow channel 11 located below the second flow channel 21, so that the first flow channel 11 and the second flow channel 21 are respectively distributed at the bottom and top of the intermediate spraying member 3. The first flow channel 11 and the second flow channel 21 can be isolated from each other by the intermediate spraying member 3, so that the first cleaning medium and the second cleaning medium can be independently transported. While ensuring the stability of the transport of the first cleaning medium and the second cleaning medium, the compactness of the spraying structure 10 is improved.

[0146] By limiting the thickness of the intermediate spraying component 3, the overall thickness of the spraying structure 10 can be further compressed, so that the spraying structure 10 has a thinner characteristic.

[0147] Meanwhile, since the first flow channel 11 is located below the second flow channel 21, when the first cleaning medium is cleaning foam, the cleaning foam will first accumulate in the first flow channel 11 and then float to one side of the central spraying element 3, and then be sprayed out through the first nozzle 31. This allows the cleaning foam to first be fully accumulated and evenly mixed in the first flow channel 11, and then be sprayed out in a stable and continuous state at one time, ensuring the density of the cleaning foam and realizing the cleaning function of the first cleaning medium.

[0148] Figure 8 for Figure 6 A schematic cross-sectional view of the spray structure 10 along the EE direction. Figure 9 for Figure 6 A schematic cross-sectional view of the spray structure 10 along the CC direction. Figure 11 for Figure 6 A schematic cross-sectional view of the spray structure 10 along the DD direction. Figure 12 for Figure 10 An enlarged diagram of part B in the middle. Figure 13 for Figure 10 An enlarged schematic diagram of section C.

[0149] Please refer to Figure 7 , Figure 8 , Figure 9 , Figures 11 to 13 In some embodiments, the bottom of the intermediate spray component 3 has a first mating part 33, and the top of the first cover 1 has a first mounting part 12. One of the first mating part 33 and the first mounting part 12 is inserted into the other. The top of the intermediate spray component 3 has a second mounting part 34, and the bottom of the second cover 2 has a second mating part 22. One of the second mating part 22 and the second mounting part 34 is inserted into the other. This ensures the stability of the connection between the first cover 1, the intermediate spray component 3, and the second cover 2. Through the insertion of the bottom of the intermediate spray component 3 with the top of the first cover 1 and the insertion of the top of the intermediate spray component 3 with the bottom of the second cover 2, when the first flow channel 11 and the second flow channel 21 are impacted by the cleaning medium, the axial constraint formed by the insertion can prevent the relative displacement or loosening of the first cover 1, the intermediate spray component 3, and the second cover 2, and can achieve a better sealing and leak-proof effect.

[0150] Please refer to Figure 7 In this embodiment, the first mating part 33 and the first assembly part 12, and the second mating part 22 and the second assembly part 34 can adopt an interference fit, thereby generating radial clamping force through the interference fit, further improving the structural stability of the spraying structure 10.

[0151] Please refer to Figure 7 , Figure 12 and Figure 13Specifically, since the intermediate spraying component 3 needs to be equipped with a first nozzle 31 communicating with the first flow channel 11 and a second nozzle 32 communicating with the second flow channel 21, and the mechanical strength and spray stability of the first nozzle 31 and the second nozzle 32 need to be guaranteed, the intermediate spraying component 3 needs to maintain a certain thickness in the corresponding positions of the first nozzle 31 and the second nozzle 32. In other areas where the first nozzle 31 and the second nozzle 32 are not provided, a first mating part 33 and a second mating part 22 can be provided. By inserting the first assembly part 12 of the first cover 1 into the first mating part 33 of the intermediate spraying component 3, and inserting the second assembly part 34 of the second cover 2 into the second mating part 22 of the intermediate spraying component 3, the spraying structure 10 is assembled. This makes full use of the thickness space of the intermediate spraying component 3, allowing the first assembly part 12 and the second assembly part 34 to be accommodated within the body of the intermediate spraying component 3, without the need to add additional radial installation space, thereby effectively reducing the thickness of the spraying structure 10.

[0152] Meanwhile, since the spraying structure 10 adopts a plug-in fit, the first cover 1 and the second cover 2 only need to maintain the thickness of forming the first flow channel 11 and the second flow channel 21, without the need for openings. Therefore, a thin-walled structure can be adopted, which can further reduce the thickness of the spraying structure 10, achieve compactness and lightweighting, and make the spraying structure 10 adaptable to installation environments with limited space.

[0153] Please refer to Figure 7 , Figure 12 and Figure 13 Furthermore, when the first cleaning medium flows within the first flow channel 11, the stepped interface formed by the engagement of the first assembly part 12 and the first mating part 33 creates a mechanical barrier, constraining the flow path of the first cleaning medium and preventing it from escaping towards the assembly interface. When the second cleaning medium flows within the second flow channel 21, the stepped interface formed by the engagement of the second assembly part 34 and the second mating part 22 creates a mechanical barrier, constraining the flow path of the second cleaning medium and preventing it from escaping towards the assembly interface. Through the synergistic effect of these dual mechanical barriers, leakage of the cleaning medium can be reduced, ensuring directional delivery of the cleaning medium along the flow channel.

[0154] Please refer to Figure 6 and Figure 10 In some embodiments, the main body of the first cover 1 is the first substrate 13, the main body of the intermediate spraying component 3 is the intermediate substrate 35, and the main body of the second cover 2 is the second substrate 23.

[0155] The top surface of the first substrate 13 has a first mounting portion 12, and the first mounting portion 12 forms two first protrusions with a certain distance between them on the top surface of the first substrate 13. The bottom surface of the intermediate substrate 35 has a first mating portion 33, and the first mating portion 33 forms two first grooves with a certain distance between them on the bottom surface of the intermediate substrate 35. A first flow channel groove is provided between the two first grooves on the bottom surface of the intermediate substrate 35. The two first protrusions and the two first grooves are correspondingly inserted and mated, so that the first flow channel groove and the top surface of the first substrate 13 form a first flow channel 11 for the first cleaning medium to flow. The arrangement of the first protrusions and the first grooves facilitates the arrangement of the first flow channel groove and reserves sufficient installation area for the first nozzle 31.

[0156] Since the two first protrusions and the two first grooves are inserted into each other, two sets of bent contact surfaces can be formed. That is, the height difference between the first protrusions and the first flow channel 11 forms a bent structure. The two sets of bent contact surfaces are located on both sides of the first flow channel 11, thereby forming a mechanical barrier to constrain the flow path of the first cleaning medium and prevent the first cleaning medium from escaping towards the assembly interface, while ensuring the stability of the connection between the first substrate 13 and the intermediate substrate 35.

[0157] Please refer to Figure 1 , Figure 6 , Figure 7 and Figure 10 The top surface of the intermediate substrate 35 has a second mounting portion 34, which forms two second protrusions with a certain distance between them. The bottom surface of the second substrate 23 has a second mating portion 22, which forms two second grooves with a certain distance between them. A second flow channel groove is provided between the two second grooves on the bottom surface of the second substrate 23. The two second protrusions and the two second grooves are correspondingly inserted and mated. The second flow channel groove and the top surface of the intermediate substrate 35 form a second flow channel 21 for the flow of the second cleaning medium. The arrangement of the second protrusions and the second grooves facilitates the arrangement of the second flow channel groove and provides sufficient mounting area for the second nozzle 32.

[0158] Meanwhile, since the two second protrusions and the two second grooves are correspondingly inserted and engaged, two sets of bent contact surfaces can be formed. That is, the height difference between the second protrusions and the second flow channel 21 forms a bent structure. The two sets of bent contact surfaces are located on both sides of the second flow channel 21, thereby forming a mechanical barrier to constrain the flow path of the second cleaning medium and prevent the second cleaning medium from escaping towards the assembly interface, while ensuring the stability of the connection between the second substrate 23 and the intermediate substrate 35.

[0159] Similarly, the first cover 1 and the second cover 2 can maintain only the thickness forming the first flow channel 11 and the second flow channel 21, adopting a thin-walled structure to further reduce the thickness of the spray structure 10.

[0160] Please refer to Figure 1 , Figure 6 , Figure 7 and Figure 10 In some embodiments, the first cover 1, the intermediate spraying component 3, and the second cover 2 are all annular components. After the first cover 1, the intermediate spraying component 3, and the second cover 2 are assembled in sequence, they fit tightly together. The thickness h of the exposed surface on the outer side of the spraying structure 10 is equal to the sum of the thicknesses of the first substrate 13, the first protrusion, the intermediate substrate 35, the second protrusion, and the second substrate 23.

[0161] Specifically, when setting the first nozzle 31 and the second nozzle 32, it is necessary to perform opening or channel forming processing on the intermediate substrate 35. Therefore, the intermediate substrate 35 needs to retain sufficient material thickness in the surrounding area of ​​the first nozzle 31 and the second nozzle 32, that is, the first nozzle 31 and the second nozzle 32 have a safe thickness of the thinnest side opening of the substrate in the manufacturing process.

[0162] Please refer to Figure 6 , Figure 7 and Figure 10 Specifically, the larger of the safety thicknesses corresponding to the first nozzle 31 and the second nozzle 2 is denoted as x, and the smaller is denoted as y. The thickness of the intermediate substrate 35 is [x, 2x), meaning that the minimum thickness of the intermediate substrate 35 can be equal to x, and the maximum thickness is less than 2x. This ensures that the intermediate substrate 35 has sufficient structural strength around the first nozzle 31 and the second nozzle 32, while avoiding excessive thickness of the first substrate 13 that would lead to material waste, thus ensuring the lightweight design of the spray structure 10.

[0163] Meanwhile, since the first cover 1 and the intermediate spraying component 3 are sealed and connected through the insertion and engagement of the first protrusion and the first groove, and the second cover 2 and the intermediate spraying component 3 are sealed and connected through the insertion and engagement of the second protrusion and the second groove, the first cover 1 and the second cover 2 mainly serve to cover and form the flow channel. Therefore, the first cover 1 only needs to maintain the structural thickness required to form the first flow channel 11 together with the first flow channel groove, and the second cover 2 only needs to maintain the structural thickness required to form the second flow channel 21 together with the second flow channel groove. Under the premise of ensuring the sealing performance and assembly strength of the flow channel, the thickness of the first substrate 13 and the second substrate 23 can both be less than y, thereby reducing the weight and material cost of the spraying structure 10, reducing the thickness of the spraying structure 10, and enabling the spraying structure 10 to adapt to the installation environment with limited space.

[0164] Please refer to Figure 10In an exemplary embodiment, the thickness of the intermediate substrate 35 is a, the thickness of the first substrate 13 is c, the thickness of the second substrate 23 is b, the thickness of the first protrusion is d, and the thickness of the second protrusion is e, wherein a is 2.5 mm, b is 1.7 mm, c is 2 mm, and d and e are both 1.1 mm.

[0165] Please refer to Figure 1 , Figures 3 to 7 In some embodiments, the first nozzle 31 is connected to the side of the first flow channel 11 adjacent to the second flow channel 21. The inlet end of the second nozzle 32 is connected to the second flow channel 21, and the outlet end of the second nozzle 32 is inclined relative to its inlet end toward the side of the first flow channel 11.

[0166] Since the first flow channel 11 is located below the second flow channel 21, in this embodiment, the first nozzle 31 is connected to the side of the first flow channel 11 adjacent to the second flow channel 21, so that the first cleaning medium can rise along the first flow channel 11 and then be sprayed out from the first nozzle 31. This allows the first nozzle 31 and the second nozzle 32 to be arranged at the same height, which is beneficial for the first and second cleaning media to be sprayed out in coordination from the same height, so that the coverage areas of the first and second cleaning media are the same or similar. While ensuring the pre-cleaning effect, it also makes the structure of the intermediate spraying component 3 more compact in the thickness direction, reduces the thickness requirement, and is conducive to weight reduction.

[0167] Please refer to Figure 1 , Figures 3 to 7 Meanwhile, in this embodiment, the outlet end of the second nozzle 32 is inclined toward the side of the first flow channel 11 relative to its inlet end. When the spraying structure 10 is applied to the sewage tank 20, the inclined outlet end allows the second cleaning medium sprayed from the second nozzle 32 to impact the inner wall of the sewage tank 20 at an inclined downward angle. During the impact, the second cleaning medium can generate a downward thrust, effectively peeling the first cleaning medium and the object to be cleaned from the inner wall of the sewage tank 20. This avoids the problem of the first and second cleaning media splashing and the object to be cleaned remaining due to the impact of the second cleaning medium perpendicular to the inner wall of the sewage tank 20, and further improves the pre-cleaning effect.

[0168] In some embodiments, along the direction from the top to the bottom of the intermediate spray member 3, the center of the first nozzle 31 at the outlet end and the center of the second nozzle 32 at the outlet end are both located at the same height of the intermediate spray member 3, so that the first cleaning medium and the second cleaning medium can be sprayed from the same height position, thereby ensuring that the coverage of the first cleaning medium and the second cleaning medium is the same in the height direction.

[0169] Please refer to Figures 3 to 7In one exemplary embodiment, the first cleaning medium is cleaning foam, the second cleaning medium is liquid water, and the spraying structure 10 is applied to the sewage tank 20. The first nozzle 31 sprays out the first cleaning medium to cover the inner wall of the sewage tank 20 and soften the attached objects to be cleaned. After a period of time, the second nozzle 32 sprays out the second cleaning medium. Since the center of the first nozzle 31 at the outlet end and the center of the second nozzle 32 at the outlet end are both located at the same height of the intermediate spraying member 3, the second cleaning medium can cover the area with the first cleaning medium attached in a horizontally aligned spray path and peel the softened objects to be cleaned off the inner wall of the sewage tank 20, thereby avoiding cleaning dead corners caused by height differences and further improving the pre-cleaning effect.

[0170] Please refer to Figures 3 to 7 In some embodiments, there are multiple first nozzles 31 and second nozzles 32. Along the circumference of the intermediate spraying member 3, the first nozzles 31 and second nozzles 32 are alternately arranged on the intermediate spraying member 3.

[0171] Please refer to Figures 3 to 7 Specifically, the first nozzle 31 and the second nozzle 32 are arranged alternately on the circumferential sidewall of the intermediate spraying component 3. When the spraying structure 10 is running, the first nozzle 31 first sprays the first cleaning medium, so that the first cleaning medium evenly covers the inner sidewall of the sewage tank 20. Then the second nozzle 32 sprays the second cleaning medium to rinse the first cleaning medium and the attached objects to be cleaned. By limiting the number and arrangement (alternating arrangement) of the first nozzle 31 and the second nozzle 32, the spray range of the first nozzle 31 and the second nozzle 32 can be increased so as to achieve full circumferential coverage of the inner sidewall of the sewage tank 20, avoid cleaning dead corners caused by uneven layout of the first flow channel 11 and the second flow channel 21, avoid the residue of objects to be cleaned, and ensure the pre-cleaning effect.

[0172] In this embodiment, no restrictions are placed on the number or spacing of the first nozzle 31 and the second nozzle 32; an adaptive selection can be made according to actual needs.

[0173] Please refer to Figures 3 to 7 In some embodiments, the spraying area of ​​the second nozzle 32 covers at least the spraying area of ​​an adjacent first nozzle 31. This ensures that the second cleaning medium sprayed from the second nozzle 32 can cover the first cleaning medium sprayed from the first nozzle 31, thereby flushing the first cleaning medium and the object to be cleaned into the wastewater tank 20. This prevents the first cleaning medium from drying and re-adhering to the inner wall of the wastewater tank 20, ensuring the pre-cleaning effect.

[0174] Figure 14 for Figure 6 A schematic diagram of the cross-section of the spray structure 10 along the FF direction.

[0175] Please refer to Figure 6 , Figure 7 and Figure 14 In some embodiments, the spraying structure 10 further includes a first connecting portion 4 and a second connecting portion 5. The first connecting portion 4 is used to provide a first cleaning medium to the first flow channel 11. The first connecting portion 4 passes through the second substrate 23 and the intermediate substrate 35 and communicates with the groove of the first flow channel to communicate with the first flow channel 11, so that the first nozzle 31 sprays the first cleaning medium. The second connecting portion 5 is used to provide a second cleaning medium to the second flow channel 21. The second connecting portion 5 passes through the second substrate 23 and communicates with the groove of the second flow channel to communicate with the second flow channel 21, so that the second nozzle 32 sprays the second cleaning medium.

[0176] Specifically, in this embodiment, both the first connecting portion 4 and the second connecting portion 5 are connecting ports. One end of the first connecting portion 4 is connected to the first flow channel 11, and the other end is connected to an external device, thereby receiving cleaning medium and air supplied from the outside, so that the first nozzle 31 sprays the first cleaning medium. One end of the second connecting portion 5 is connected to the second flow channel 21, and the other end is connected to another external device, so as to receive the second cleaning medium supplied from the outside, allowing the first cleaning medium to flow from the first connecting portion 4 into the first flow channel 11 and finally be sprayed out from the first nozzle 31, and the second cleaning medium to flow from the second connecting portion 5 into the second flow channel 21 and finally be sprayed out from the second nozzle 32.

[0177] Specifically, in one exemplary embodiment, the first connecting portion 4 is used to receive cleaning medium and air supplied from the outside, and the first nozzle 31 can convert the cleaning medium and air into a first cleaning medium. In another exemplary embodiment, the first connecting portion 4 can also directly receive the first cleaning medium supplied from the outside; this embodiment does not impose any limitations on this.

[0178] Please refer to Figure 7 , Figure 10 and Figure 12 In some embodiments, the inlet end of the first nozzle 31 is connected to the portion of the first flow channel 11 located in the intermediate spray member 3, forming a first branch 311. This allows the first cleaning medium to flow into the first branch 311 through the first flow channel 11 and be ejected from the first nozzle 31. The inlet end of the second nozzle 32 is connected to the portion of the second flow channel 21 located in the intermediate spray member 3, forming a second branch 321. This allows the second cleaning medium to flow into the second branch 321 through the second flow channel 21 and be ejected from the second nozzle 32. The first branch 311 and the second branch 321 are located between the first flow channel 11 and the second flow channel 21. By limiting the positions of the first nozzle 31 corresponding to the first branch 311 and the second nozzle 32 corresponding to the second branch 321, the thickness of the intermediate spray member 3 can be further utilized without requiring additional space.

[0179] Specifically, in this embodiment, along the direction from the top to the bottom of the intermediate spraying element 3, the first branch 311 is located below the second branch 321. This allows the second cleaning medium to flow into the second branch 321 under the influence of gravity. The first cleaning medium can first accumulate in the first flow channel 11 and then float to the first branch 311 on one side of the intermediate spraying element 3, and then be sprayed out through the first nozzle 31. This avoids interference between the first branch 311 and the second branch 321, ensuring the independence of the first branch 311 and the second branch 321, and realizing the orderly spraying of the first and second cleaning media.

[0180] Please refer to Figure 7 In some embodiments, the height difference between the center of the first nozzle 31 at the outlet end and the center of the second nozzle 32 at the outlet end is less than 1 mm. This is beneficial for the first cleaning medium and the second cleaning medium to be sprayed out from the same height, so that the coverage areas of the first cleaning medium and the second cleaning medium are the same or similar. While ensuring the pre-cleaning effect, it can also make the structure of the intermediate spraying component 3 more compact in the thickness direction, reduce the thickness requirement, and facilitate weight reduction.

[0181] In some embodiments, the spraying structure 10 is annular, and along the circumference of the spraying structure 10, the first nozzle 31 and the second nozzle 32 are alternately arranged on the outer side wall or bottom wall of the intermediate spraying member 3.

[0182] Please refer to Figure 3 and Figure 7 Specifically, when the spray structure 10 is used to clean the sewage tank 20, the sewage tank 20 is usually circular or elliptical. By making the spray structure 10 ring-shaped, it can match the shape of the sewage tank 20, which can increase the spray range of the first nozzle 31 and the second nozzle 32, so that the spray trajectory of the first nozzle 31 and the second nozzle 32 can cover the inner wall of the sewage tank 20, avoid cleaning dead corners, and ensure cleaning efficiency.

[0183] In some embodiments, the spraying structure 10 is strip-shaped, and along the extending direction of the spraying structure 10, the first nozzle 31 and the second nozzle 32 are alternately arranged on the outer side of the intermediate spraying member 3.

[0184] Specifically, when the spray structure 10 is used to clean the roller brush, since the roller brush is usually a long cylindrical structure, by designing the spray structure 10 as a strip, it can be adapted to the shape of the outer peripheral surface of the roller brush. This allows the first nozzle 31 and the second nozzle 32 to be evenly distributed along the axial direction of the roller brush to cover the entire outer peripheral surface of the roller brush, ensuring that the first cleaning medium and the second cleaning medium can be evenly covered on the roller brush along the length direction of the roller brush, eliminating cleaning dead corners, and improving cleaning effect and cleaning efficiency.

[0185] Please refer to Figure 12 and Figure 13 In some embodiments, the first nozzle 31 is a circular hole or a horn hole, which makes the shape of the first nozzle 31 more diverse to meet the design requirements of the spraying structure 10 for different shapes of the first nozzle 31.

[0186] Please refer to Figure 4 and Figure 13 Specifically, when the first nozzle 31 is a circular hole, the hole wall extends axially, and the outlet end of the circular hole faces the inner wall of the sewage tank 20. When the first cleaning medium passes through the circular hole, the center velocity of the first cleaning medium is higher and the edge velocity is lower, so that it can generate radial diffusion when leaving the circular hole, forming a fan-shaped jet, thereby increasing the coverage area of ​​the first cleaning medium and ensuring the cleaning effect.

[0187] Please refer to Figure 5 and Figure 13 When the first nozzle 31 is a horn-shaped hole, the hole wall gradually expands outward from the inlet end to the outlet end of the first nozzle 31, forming a horn-shaped channel that is narrower inside and wider outside. Therefore, when the first cleaning medium passes through the horn-shaped hole, the first cleaning medium will be compressed inside the horn-shaped hole and then flow out along the expanding outlet end, thereby forming a fan-shaped jet with a larger opening angle, further increasing the coverage area of ​​the first cleaning medium and ensuring the cleaning effect.

[0188] Please refer to Figure 7 In some embodiments, the outlet end of the first nozzle 31 is a circular hole with a diameter of 0.6-1.5 mm.

[0189] Specifically, when the first nozzle 31 is a circular hole or a horn hole, the outlet end of the first nozzle 31 is a circular hole.

[0190] When the diameter of the circular orifice is less than 0.6 mm, such as 0.1 mm, 0.3 mm, or 0.5 mm, the first nozzle 31 needs to spray the first cleaning medium. If the diameter of the first nozzle 31 is too small, it is easily clogged by tiny particles in the first cleaning medium, leading to poor flow or interruption of the first cleaning medium. At the same time, an excessively small orifice diameter increases the flow resistance of the first cleaning medium, resulting in increased energy consumption.

[0191] When the diameter of the circular hole is greater than 1.5mm, such as 1.8mm, 2.0mm or 2.5mm, the excessively large hole diameter will reduce the concentration and impact force of the jet when the first cleaning medium is sprayed, resulting in excessive dispersion of the first cleaning medium, while increasing the consumption of the first cleaning medium and the cleaning effect is poor.

[0192] Therefore, the diameter of the circular hole in this embodiment is 0.6-1.5 mm, for example 0.9 mm, 1.0 mm or 1.2 mm. This can form a jet with sufficient impact force and directionality to achieve effective cleaning while avoiding clogging of the first nozzle 31.

[0193] Please refer to Figure 4 , Figure 5 and Figure 12 In this embodiment, the second nozzle 32 is a strip-shaped nozzle that extends circumferentially along the middle spraying element 3.

[0194] Specifically, since the second nozzle 32 needs to spray out the second cleaning medium to rinse the first cleaning medium, the second nozzle 32 is a strip-shaped opening extending circumferentially along the spraying structure 10. When the second cleaning medium flows out of the strip-shaped opening, it is constrained by the hole wall of the strip-shaped opening to form a continuous curtain-like jet, thereby forming a waterfall-like fluid that washes the inner wall of the sewage tank 20 from top to bottom, ensuring the rinsing effect and improving the convenience for users to clean the sewage tank 20.

[0195] Please refer to Figure 6 and Figure 7 The outlet end of the second nozzle 32 is a strip-shaped hole, which extends along the direction of the adjacent first nozzle. The length of the strip-shaped hole is 3-9mm and the width of the strip-shaped hole is 0.3-0.7mm.

[0196] When the length of the strip hole is less than 3mm, such as 1mm, 2mm or 2.5mm, the length of the strip hole is too short, which limits the diffusion width of the second cleaning medium, resulting in insufficient coverage of the second cleaning medium, failure to form an effective cleaning area, and low cleaning efficiency.

[0197] When the length of the strip hole is greater than 9mm, such as 10mm, 11mm or 12mm, the excessively long strip hole will weaken the impact force per unit area of ​​the jet, causing the second cleaning medium to be over-dispersed, while increasing the consumption of the second cleaning medium and resulting in poor cleaning effect.

[0198] When the width of the strip orifice is less than 0.3mm, such as 0.1mm, 0.2mm or 0.25mm, the width of the strip orifice is too narrow and it is easy to be blocked by tiny particles in the second cleaning medium. At the same time, it increases the flow resistance of the second cleaning medium and increases energy consumption.

[0199] When the width of the strip orifice is greater than 0.7mm, such as 0.8mm, 1.0mm or 1.5mm, the excessive width will reduce the concentration and directionality of the jet, resulting in a waste of the second cleaning medium.

[0200] Therefore, in this embodiment, the length of the strip-shaped hole is 3-9mm, such as 4mm, 6mm or 8mm, and the width of the strip-shaped hole is 0.3-0.7mm, such as 0.4mm, 0.5mm or 0.6mm. This can prevent the second nozzle 32 from being blocked, while making the second cleaning medium form a strip-shaped jet with a moderate diffusion range and uniform impact force, ensuring the coverage of the area to be cleaned by the second cleaning medium, thereby ensuring the cleaning effect.

[0201] In this embodiment, the distance between the outlet end of the first nozzle 31 and the outlet end of the second nozzle 32 is 0.8-1.5 mm.

[0202] Specifically, since the second cleaning medium sprayed from the second nozzle 32 needs to rinse the first cleaning medium sprayed from the first nozzle 31, if the distance between the outlet ends of the first nozzle 31 and the second nozzle 32 is too small, such as 0.5mm, 0.6mm, or 0.7mm, the second cleaning medium sprayed from the two second nozzles 32 on adjacent sides of the first nozzle 31 will easily overlap excessively, resulting in waste of the second cleaning medium. If the distance between the outlet ends of the first nozzle 31 and the second nozzle 32 is too large, such as 1.8mm, 2.0mm, or 2.5mm, the second cleaning medium cannot fully cover the coverage area of ​​the first cleaning medium, easily creating cleaning dead spots and resulting in poor cleaning effect.

[0203] Therefore, by controlling the distance between the outlet end of the first nozzle 31 and the outlet end of the second nozzle 32 to between 0.8-1.5mm, such as 0.9mm, 1.0mm or 1.2mm, this embodiment can ensure that the second cleaning medium sprayed from the second nozzle 32 covers the first cleaning medium sprayed from the first nozzle 31, while avoiding excessive overlap and waste of the second cleaning medium and the problem of cleaning blind spots, thus improving the pre-cleaning effect.

[0204] Please refer to Figure 6 and Figure 7 In some embodiments, the spraying structure 10 is annular, and at least one of the first flow channel 11 and the second flow channel 21 is an annular flow channel extending circumferentially along the intermediate spraying member 3.

[0205] Specifically, in this embodiment, corresponding to the spraying structure 10, the first flow channel 11 and the second flow channel 21 are both annular flow channels extending circumferentially along the intermediate spraying member 3. This allows the first cleaning medium and the second cleaning medium to be evenly distributed circumferentially along the intermediate spraying member 3, so as to achieve full circumferential coverage of the inner wall of the sewage tank 20 and avoid cleaning dead corners caused by uneven layout of the first flow channel 11 and the second flow channel 21.

[0206] In other embodiments, only the first flow channel 11 or only the second flow channel 21 may be an annular flow channel. This embodiment does not impose any restrictions on this.

[0207] Please refer to Figures 3 to 7 In an exemplary embodiment, the first flow channel 11 is an annular flow channel. The first cleaning medium is uniformly delivered to multiple first nozzles 31 circumferentially through the annular first flow channel 11, so that the first cleaning medium can simultaneously cover the circumferential surface of the inner sidewall of the sewage tank 20, thereby avoiding the problem of excessively high or low concentration of the first cleaning medium in a local area within the first flow channel 11 and ensuring the softening effect of the first cleaning medium on the object to be cleaned.

[0208] In another exemplary embodiment, the second flow channel 21 is an annular flow channel. The second cleaning medium is evenly distributed circumferentially through the annular second flow channel 21, so that the second cleaning medium sprayed from multiple second nozzles 32 forms a continuous water curtain and flows downward along the circumferential surface of the inner sidewall of the sewage tank 20. This allows for simultaneous all-round rinsing of the softened material to be cleaned, avoiding the problem of residual material due to uneven flow rate caused by uneven layout of the second flow channel 21, and improving cleaning efficiency.

[0209] Please refer to Figures 3 to 7 This application embodiment also provides a wastewater tank 20 for a cleaning device (hereinafter referred to as the first wastewater tank), which includes a tank body 201, a tank cover 202, a sealing element 203, and a spraying structure 10 as described above.

[0210] The spraying structure 10 has been described in the above embodiments and will not be repeated here.

[0211] Please refer to Figures 3 to 7 In this embodiment, the housing 201 is used to contain the wastewater and the items to be cleaned generated by the cleaning equipment 100 during the cleaning process. The housing 201 is detachably connected to the cleaning equipment 100, so that the user can remove the housing 201 from the cleaning equipment 100 to clean the housing 201.

[0212] In this embodiment, the housing 201 and the cleaning device 100 are connected by a snap fastener. The bottom of the housing 201 is provided with an elastic snap fastener, and the cleaning device 100 is provided with a corresponding slot. The elastic snap fastener can be snapped into the slot to fix the housing 201.

[0213] In other embodiments, the connection method between the housing 201 and the cleaning equipment can be adapted according to actual needs. This embodiment does not impose any restrictions on this.

[0214] Please refer to Figures 3 to 7The lid 202 is located on the top of the box body 201, thereby covering the opening at the top of the box body 201 to prevent sewage and cleaning materials inside the box body 201 from overflowing during shaking. At the same time, the sealing element 203 is located at the bottom of the lid 202, which is used to seal the lid 202 against the box body 201 to prevent sewage and cleaning materials from leaking out through the gap between the lid 202 and the box body 201.

[0215] Among them, the sealing element 203 can be a sealing ring. The sealing ring is sleeved on the bottom of the box cover 202. When the box cover 202 is inserted into the box body 201, the sealing ring can be squeezed between the box cover 202 and the box body 201 to form a seal on the box body 201.

[0216] In this embodiment, part of the cover 202 protrudes from the top of the tank body 201, and the cover 202 is detachably connected to the tank body 201, so that the user can open the cover 202 and pour out the sewage and the items to be cleaned when cleaning the sewage tank 20.

[0217] It should be noted that this embodiment does not impose any restrictions on the connection method between the cover 202 and the box body 201, and can make an adaptive selection according to actual needs.

[0218] Please refer to Figures 3 to 7 In this embodiment, the spraying structure 10 is installed at the bottom of the tank cover 202, and at least part of the spraying structure 10 is disposed inside the tank body 201. The first nozzle 31 and the second nozzle 32 are located on the side of the sealing member 203 facing the bottom wall of the tank body 201, so that the first cleaning medium sprayed from the first nozzle 31 and the second cleaning medium sprayed from the second nozzle 32 can directly act on the inside of the tank body 201. Compared with the existing spraying structure that sprays liquid water, the wastewater tank 20 of this embodiment enhances the pre-cleaning effect of the spraying structure 10 on the tank body 201 of the wastewater tank 20 through the setting of the spraying structure 10, so as to meet people's increasingly high requirements for the pre-cleaning effect of cleaning equipment such as floor scrubbers, thereby improving the user experience.

[0219] In addition, since the spraying structure 10 is connected to the cover 202, when the user removes the cover 202, the cover 202 can also remove the spraying structure 10 from the box body 201 at the same time, without the user having to disassemble the spraying structure 10 separately, which reduces the complexity of operation and improves the user experience.

[0220] During the use of the cleaning equipment 100, the position of the wastewater tank 20 changes depending on the usage state of the cleaning equipment 100. When the user lays the cleaning equipment 100 flat, that is, the main body of the cleaning equipment 100 is parallel or nearly parallel to the surface to be cleaned, the debris to be cleaned in the wastewater tank 20 will flow with the wastewater in the wastewater tank 20 and accumulate at the sealing part 203 of the tank cover 202. Moreover, the composition of the accumulated debris is complex, and the debris at this location generally cannot be effectively sprayed cleaned. However, the wastewater tank 20 provided in this embodiment, by setting the above-mentioned spraying structure, sprays different cleaning media directly onto the tank body 201, enhancing the cleaning effect of the spraying structure 10 on the tank body 201 of the wastewater tank 20, so as to meet people's increasingly high pre-cleaning effect of cleaning equipment such as floor scrubbers, thereby improving the user experience. Furthermore, since the seal 203 is located at the bottom of the cover 202 and the spray structure 10 is installed at the bottom of the cover 202, when the first nozzle 31 and the second nozzle 32 are located on the side of the seal 203 facing the bottom wall of the tank 201, the overall thin design of the spray structure 10 allows the first nozzle 31 and the second nozzle 32 to be positioned closer to the seal 203. This allows the cleaning medium to flow slightly upwards on the inner wall of the wastewater tank 20 under the action of the spray pressure when the first and second cleaning media clean the wastewater tank 20, so as to reach and wash the area near the seal 203, thereby enhancing the cleaning effect of the wastewater tank 20 and further improving the user experience.

[0221] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the spraying structure 10 includes a second cover 2, which is connected to the bottom end of the box cover 202, or the second cover 2 is integrally formed on the bottom end of the box cover 202.

[0222] Specifically, in this embodiment, the second cover 2 is connected to the bottom end of the box cover 202 so that the spraying structure 10 is connected to the bottom end of the box cover 202 through the second cover 2, thereby forming an integral structure with the second cover 2, and avoiding the loosening of components due to vibration during the cleaning process.

[0223] When the second cover 2 and the box cover 202 are connected separately, they can be detached and fixed by bolts or clips, which facilitates the maintenance and replacement of the spraying structure 10.

[0224] When the second cover 2 and the box cover 202 are integrally molded, they can be manufactured as a whole by injection molding. This can enhance the connection strength between the second cover 2 and the box cover 202 and reduce the assembly interface, prevent sewage or cleaning material in the sewage tank 20 from entering the gap between the second cover 2 and the box cover 202, and improve the sealing performance of the spray structure 10 and the box cover 202.

[0225] Please refer to Figures 3 to 7 In some embodiments, the first nozzle 31 and the second nozzle 32 are alternately arranged on the intermediate spraying member 3. The spraying area of ​​the second nozzle 32 on the inner wall of the housing 201 at least covers the spraying area of ​​the adjacent first nozzle 31 on the inner wall of the housing 201. This ensures that the second cleaning medium sprayed by the second nozzle 32 can cover the first cleaning medium sprayed by the first nozzle 31, thereby flushing the first cleaning medium and the object to be cleaned into the housing 201. This prevents the first cleaning medium from drying and re-adhering to the inner wall of the housing 201, thus ensuring the pre-cleaning effect of the sewage tank 20.

[0226] Please refer to Figures 3 to 7 This application embodiment also provides a wastewater tank 20 for another cleaning device (hereinafter referred to as the second wastewater tank). Unlike the first wastewater tank, the spraying structure 10 in the second wastewater tank has a first flow channel 11, a first nozzle 31 and a first docking part 6. The formation of the first flow channel 11, the structure, setting position and number of the first nozzle 31 are the same as those of the spraying structure described above. Please refer to the relevant description of the spraying structure above, which will not be repeated here.

[0227] In this embodiment, for the second type of sewage tank, the first docking part 6 is located on the tank cover 202. The first docking part 6 is at least used to receive gas-liquid mixture or cleaning foam delivered from the outside. The gas-liquid mixture is a mixture of cleaning agent and air. The first docking part 6, the first flow channel 11 and the first nozzle 31 are connected in sequence. The first nozzle 31 is a foam nozzle. The first nozzle 31 is used to spray a first cleaning medium into the tank body 201. The first cleaning medium is cleaning foam.

[0228] Specifically, users can manually connect the first docking part 6 to a bottle containing a gas-liquid mixture or cleaning foam, or directly connect the first docking part 6 to the cleaning liquid device of the cleaning equipment, thereby delivering the cleaning medium directly to the spraying structure 10 through the cleaning liquid device, without requiring users to add additional cleaning medium to the spraying structure 10, making the operation simple and convenient.

[0229] Please refer to Figures 3 to 7 For the second type of wastewater tank, the first docking part 6, the first flow channel 11, and the first nozzle 31 are connected in sequence. The first nozzle 31 is a foam nozzle, which is used to spray cleaning foam into the tank body 201. The first nozzle 31 is located on the part of the tank cover 202 located inside the tank body 201, so that the first nozzle 31 can directly spray cleaning foam into the tank body 201.

[0230] Specifically, when the first cleaning medium flows through the first nozzle 31, it is converted into cleaning foam. This cleaning foam is then sprayed into the tank 201 through the first nozzle 31, allowing it to adhere to the inner wall of the tank 201. This softens the substances to be cleaned adhering to the inner wall of the tank 201, thus pre-cleaning the wastewater tank 20. Compared to existing spray structures that spray liquid water, the spray structure 10 provided in this embodiment enhances the pre-cleaning effect on the tank 201 within the wastewater tank 20, meeting the increasingly higher pre-cleaning requirements of floor scrubbers and other cleaning equipment, thereby improving the user experience.

[0231] In some embodiments, the first nozzle 31 is provided with a foaming filter screen, which is used to generate cleaning foam when the cleaning medium received by the first docking part 6 is a gas-liquid mixture.

[0232] The gas-liquid mixture and the foaming filter have been described in the above embodiments and will not be repeated here.

[0233] When the gas-liquid mixture flows synchronously through the foaming filter, the cleaning liquid is cut into fine droplets by the through-holes of the foaming filter and mixes with air, thus forming cleaning foam at the first nozzle 31. Compared with the cleaning liquid, the cleaning foam has a larger surface area and stronger adhesion, so it can cover the inner wall of the housing 201 and soften the objects to be cleaned on the inner wall of the housing 201, making them easier to peel off. This reduces the difficulty of operation for users, eliminating the need for repeated scrubbing of the housing 201 and improving the user's cleaning efficiency and experience.

[0234] Please refer to Figures 3 to 7 In some embodiments, the lid 202 is provided with a seal 203 at the bottom edge. When the lid 202 is connected to the body 201, the seal 203 is in close contact with the top of the body 201, and the first nozzle 31 is located below the seal 203.

[0235] The sealing element 203 is the same as the sealing element 203 in the first type of sewage tank provided in the embodiments of this application, and will not be described again here.

[0236] The sealing element 203 ensures the airtightness of the wastewater tank 20, preventing wastewater and cleaning materials inside the tank 201 from overflowing during shaking. Simultaneously, the sealing element 203 also prevents the cleaning foam sprayed from the first nozzle 31 from overflowing the tank 201, allowing the cleaning foam to fully contact the inner surface of the tank 201, increasing the foam's adhesion time, and thus improving its cleaning effect. This avoids the need for repeated scrubbing of the tank 201 by the user, enhancing the user experience.

[0237] Please refer to Figures 3 to 7In some embodiments, the spraying structure 10 further includes a second flow channel 21, a second nozzle 32, and a second docking portion 7. The second docking portion 7 is located on the cover 202 and is used at least to receive a second cleaning medium delivered from the outside. The second docking portion 7, the second flow channel 21, and the second nozzle 32 are connected in sequence, and the second nozzle 32 is used to spray the second cleaning medium into the housing 201.

[0238] Specifically, in this embodiment, the second cleaning medium is liquid water. The second docking part 7 can be connected to an external bottle containing the second cleaning medium, or it can be connected to the clean water tank of the cleaning equipment, so that the second cleaning medium can be directly delivered to the spraying structure 10 through the clean water tank, without the need for the user to add the second cleaning medium to the spraying structure 10, making the operation simple and convenient.

[0239] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, after the first nozzle 31 sprays the first cleaning medium into the tank 201 and performs pre-cleaning, the spraying structure 10 can spray the second cleaning medium into the tank 201 through the second nozzle 32, thereby directly rinsing the first cleaning medium and the cleaning material attached to the inner wall of the tank 201 without requiring the user to repeatedly scrub, further reducing the cleaning difficulty for the user when cleaning the sewage tank 20 and improving the user experience.

[0240] Please refer to Figures 3 to 7 In some embodiments, there are multiple first nozzles 31 and second nozzles 32. The spraying structure 10 is annular. Along the circumference of the spraying structure 10, the first nozzles 31 and second nozzles 32 are alternately arranged on the outer side wall of the spraying structure 10 to achieve full circumferential coverage of the inner side wall of the sewage tank 20, avoid cleaning foam residue, and ensure the pre-cleaning effect.

[0241] Please refer to Figures 3 to 7 This application embodiment also provides a third type of wastewater tank 20 for cleaning equipment (hereinafter referred to as the third type of wastewater tank). Unlike the second type of wastewater tank, the spraying structure 10 in the third type of wastewater tank also has a second flow channel 21 and a second nozzle 32. Similar to the first nozzle 31, the second nozzle 32 is also arranged facing the inner wall of the tank body 201. That is, both the first nozzle 31 and the second nozzle 32 face the inner wall of the tank body 201, and the first flow channel 11 and the second flow channel 21 form a double-layer flow channel structure.

[0242] The second nozzle 32 is connected to the second flow channel 21, and the second nozzle 32 is used to spray the second cleaning medium into the housing 201.

[0243] Specifically, in this embodiment, the spraying structure 10 can spray not only the first cleaning medium, but also the second cleaning medium.

[0244] In some embodiments, the second cleaning medium is liquid water, used to rinse the cleaning foam and the object to be cleaned adhering to the housing 201.

[0245] By setting up the spray structure 10, the first cleaning medium can be converted into cleaning foam through the first docking part 6, the first flow channel 11, and the first nozzle 31 to pre-clean the housing 201, softening the objects to be cleaned adhering to the inner wall of the housing 201. Simultaneously, the second cleaning medium can flow into the housing 201 through the second docking part 7, the second flow channel 21, and the second nozzle 32, thereby rinsing the first cleaning medium and the objects to be cleaned adhering to the inner wall of the housing 201. Compared to existing spray structures that spray liquid water, the spray structure 10 of this embodiment enhances the pre-cleaning effect of the housing 201, meeting the increasingly higher pre-cleaning requirements of floor scrubbers and other cleaning equipment, and improving the user experience.

[0246] Please refer to Figures 3 to 7 and Figure 14 In some embodiments, similar to the spraying structure 10 described above, the third type of sewage tank spraying structure 10 provided in this application also has a first connecting part 4 and a second connecting part 5. The first connecting part 4 is at least used to receive a first cleaning medium, and the second connecting part 5 is at least used to receive a second cleaning medium, so as to connect the external transmission device with the first nozzle 31 and the second nozzle 32.

[0247] Similar to the wastewater tank of the second type of cleaning equipment provided in this application embodiment, the first connecting part 4 is at least used to receive a gas-liquid mixture or cleaning foam, wherein the gas-liquid mixture is a mixture of cleaning agent and air. The first nozzle 31 is provided with a foaming filter. When the cleaning medium input into the first connecting part 4 is a gas-liquid mixture, the foaming filter is used to generate cleaning foam. When the cleaning medium input into the first connecting part 4 is cleaning foam, the foaming filter is used to increase the density of the cleaning foam.

[0248] Please refer to Figures 3 to 7 In some embodiments, the spraying structure 10 further includes two docking portions, namely a first docking portion 6 and a second docking portion 7. The first docking portion 6 is interconnected with the first connecting portion 4 via a first connecting pipe 8. The first docking portion 6 is at least used to receive gas-liquid mixtures or cleaning foam delivered from the outside, so that the gas-liquid mixtures or cleaning foams flow to the first connecting portion 4. The second docking portion 7 is interconnected with the second connecting portion 5 via a second connecting pipe 9. The second docking portion 7 is at least used to receive a second cleaning medium delivered from the outside, so that the second nozzle 32 sprays the second cleaning medium into the housing 201.

[0249] The first docking part 6 and the second docking part 7 have been described in the above embodiments and will not be repeated here.

[0250] In some embodiments, the spraying structure 10 further includes a docking section, which is at least used to receive a second cleaning medium or gas-liquid mixture or cleaning foam delivered from the outside.

[0251] Specifically, the docking section can selectively connect to either the first connecting section 4 or the second connecting section 5 via an internal three-way control valve. When the docking section receives a gas-liquid mixture or cleaning foam, it connects to the first connecting section 4. When the docking section receives a second cleaning medium, it connects to the second connecting section 5.

[0252] This configuration allows a single docking unit to switch between the input requirements of the first and second cleaning media, simplifying the interface structure. When cleaning foam is needed, the docking unit guides the gas-liquid mixture to the first flow channel 11, and the cleaning foam is sprayed through the first nozzle 31. When liquid water rinsing is needed, the docking unit guides the second cleaning medium to the second flow channel 21, and the rinsing is achieved through the second nozzle 32. This reduces the number of interfaces, improves the integration of the wastewater tank 20, and reduces the complexity of user operation, thereby improving the user experience.

[0253] Please refer to Figures 3 to 7 Similar to the second type of sewage tank mentioned above, in the third type of sewage tank, there are also multiple first nozzles 31 and second nozzles 32. Along the circumference of the spraying structure 10, the first nozzles 31 and second nozzles 32 are alternately arranged on the outer circumferential wall of the spraying structure 10 to ensure the pre-cleaning effect of the spraying structure 10 on the sewage tank 20.

[0254] In some embodiments, the first nozzle 31 and the second nozzle 32 are both oriented toward the inner sidewall of the top of the housing 201, and both have a gap with the inner sidewall of the housing 201, so that while the spray structure is installed in the housing 201, the first cleaning medium and the second cleaning medium can be easily sprayed onto the inner sidewall of the top of the housing 201.

[0255] For example, in some examples, the gap between the first nozzle 31 and the second nozzle 32 and the inner sidewall of the housing 201 at the top can be less than 4 mm.

[0256] Specifically, when the gap between the first nozzle 31 and the inner wall of the housing 201 is greater than 4mm, since the internal space size of the housing 201 is fixed, the excessive gap will cause the radial installation space of the spraying structure 10 to be compressed, thereby limiting the overall outer diameter of the spraying structure 10, resulting in a reduction in the number of first nozzles 31 that can be set, thereby reducing the uniformity of the first cleaning medium coverage on the inner wall of the housing 201 and easily forming cleaning blind spots.

[0257] At the same time, the excessively large gap results in a larger spray stroke of the first cleaning medium, which increases the contact area between the first cleaning medium and the air during transportation, causing the impact force of the first cleaning medium to decrease and the adhesion to weaken, making it unable to effectively soften and peel off the objects to be cleaned adhering to the inner wall of the housing 201.

[0258] By controlling the gap size to within 4mm, the spray structure 10 can fully utilize the radial space of the housing 201 for its layout, thus allowing for a larger outer diameter spray structure 10. This allows for an increase in the number of first nozzles 31, ensuring that the first cleaning medium can effectively reach the inner wall of the housing 201. Simultaneously, the smaller gap shortens the spray path of the first cleaning medium, reducing the contact time between the first cleaning medium and air, maintaining the impact force of the first cleaning medium, and ensuring that the first cleaning medium still has sufficient kinetic energy to achieve effective cleaning when it reaches the inner wall of the housing 201.

[0259] Similarly, for the third type of sewage tank, the spray structure 10 also includes a first cover 1, an intermediate spray component 3, and a second cover 2. The assembly, structure, and parameters of these three components have been mentioned in the above description of the spray structure 10 and will not be repeated here. Furthermore, the connection between the spray structure 10 and the tank cover 201 is the same as the relevant description of the first type of sewage tank mentioned above and will not be repeated here.

[0260] Furthermore, the third type of sewage tank also includes a sealing element 203, which is disposed on the tank cover 202 and is used to form a circumferential seal between the tank cover 202 and the tank body 201. When the tank cover 202 is assembled on the tank body 201, the sealing element 203 presses against the inner wall of the tank body 201.

[0261] The spraying structure 10 is adjacent to the seal 203, and the first nozzle 31 and the second nozzle 32 are close to the lower side of the seal 203, so that the cleaning medium sprayed by the first nozzle 31 and the second nozzle 32 can reach the seal 203 around the inner wall of the housing 201 for cleaning.

[0262] With this configuration, the cleaning medium ejected from the first nozzle 31 and the second nozzle 32 will be sprayed onto the inner wall of the housing 201 under the action of spray pressure. The cleaning medium will spread outwards for a distance under the action of initial velocity and pressure on the inner wall of the housing 201 before flowing downwards. Since the spread range of the cleaning medium under the action of initial velocity and pressure is limited, it is necessary to place the first nozzle and the second nozzle as close as possible to the seal to ensure that the area near the seal 203 located above the nozzles (first nozzle 31 and second nozzle 32) can also be cleaned.

[0263] This application embodiment also provides a cleaning device 100, including a main unit 30, a sewage tank 20 as described above (such as a first type of sewage tank, a second type of sewage tank, or a third type of sewage tank), a first drive device (not shown), and a second drive device (not shown).

[0264] The sewage tank 20 has been described in the above embodiments and will not be repeated here.

[0265] The host 30 provided in this embodiment is equipped with a controller (not shown), a first liquid storage tank (not shown), and a second liquid storage tank (not shown). The first liquid storage tank and the second liquid storage tank are used to store cleaning media or liquids that can generate predetermined cleaning media.

[0266] For example, a first storage tank contains a first cleaning medium, and a second storage tank contains a second cleaning medium.

[0267] For example, a first storage tank stores a gas-liquid mixture that can generate a first cleaning medium, and a second storage tank stores a second cleaning medium.

[0268] This embodiment does not impose any restrictions on the specific substances stored in the first and second liquid storage tanks; an adaptive selection can be made according to actual needs.

[0269] Figure 2 Schematic diagram of the structure of the cleaning device 100 provided in the embodiments of this application Figure 2 .

[0270] Please refer to Figures 1 to 6 In this embodiment, the sewage tank 20 is installed on the host 30. The sewage tank 20 has a spray structure 10. The first flow channel 11 in the spray structure 10 is connected to the first liquid storage tank through the first pipe 301, and the second flow channel 21 in the spray structure 10 is connected to the second liquid storage tank through the second pipe 302.

[0271] Specifically, the first pipe 301 is connected to both the first flow channel 11 and the first liquid storage tank, enabling the cleaning medium or liquid in the first liquid storage tank to be transferred to the first flow channel 11 via the first pipe 301 and then sprayed out through the first nozzle 31. The second pipe 302 is connected to both the second flow channel 21 and the second liquid storage tank, enabling the cleaning medium or liquid in the second liquid storage tank to be transferred to the second flow channel 21 via the second pipe 302 and sprayed out through the second nozzle 32 for automated pre-cleaning of the wastewater tank 20. This eliminates the need for users to repeatedly scrub the wastewater tank 20, improving the user experience.

[0272] In some embodiments, when the spraying structure 10 has a first docking portion 6 and a second docking portion 7, one end of the first pipe 301 is inserted into the first docking portion 6 to connect the first pipe 301 to the first flow channel 11, and one end of the second pipe 302 is inserted into the second docking portion 7 to connect the second pipe 302 to the second flow channel 21. By connecting the pipes to the docking portions, the sealing of the connection between the first pipe 301 and the first docking portion 6, and between the second pipe 302 and the second docking portion 7, can be ensured, preventing leakage of the first and second cleaning media.

[0273] The first liquid storage tank can be a cleaning fluid device for cleaning equipment, and the second liquid storage tank can be a clean water tank. In other embodiments, the first liquid storage tank and the second liquid storage tank can also be additionally provided. This embodiment does not impose any restrictions on this.

[0274] Specifically, in this embodiment, the first driving device is used to drive the cleaning medium in the first storage tank to be input into the first flow channel 11, the second driving device is used to drive the cleaning medium in the second storage tank to be input into the second flow channel 21, and the controller is used to control the first driving device and the second driving device.

[0275] In some embodiments, the controller can control the start-stop sequence of the first drive device and the second drive device according to a predetermined program.

[0276] Please refer to Figures 1 to 7 For example, in one cleaning cycle, the controller first activates the first drive device to spray the first cleaning medium through the first nozzle 31 onto the inner wall of the wastewater tank 20 to soak and soften the object to be cleaned. After a preset time interval, the controller activates the second drive device to spray the second cleaning medium through the second nozzle 32 to rinse and remove the softened object to be cleaned. This avoids interference between different cleaning media and ensures the pre-cleaning effect of the wastewater tank 20.

[0277] In some embodiments, the controller can adjust the output power of the first and second drive devices according to the degree of soiling in the wastewater tank 20. For example, when a high degree of soiling is detected, the controller can increase the output pressure of the first and second drive devices to enhance the impact force of the cleaning medium. When the degree of soiling is low, the controller can reduce the output power of the first and second drive devices to achieve energy-saving operation.

[0278] The cleaning equipment 100 also includes a sensor assembly, which is installed inside the wastewater tank 20 to detect the pollution status inside the wastewater tank 20.

[0279] Please refer to Figures 1 to 7This application also provides a cleaning system, including a host 30, a base station, a sewage tank 20 as described above, a first driving device, and a second driving device.

[0280] The base station is used to charge the host 30. The host 30 can connect to the base station to charge or start a self-cleaning program. The wastewater tank 20 is installed on the host 30.

[0281] The base station includes a sewage receiving section, a first liquid storage tank, and a second liquid storage tank. The first and second liquid storage tanks are used to store cleaning media or liquids capable of generating predetermined cleaning media.

[0282] The first and second liquid storage tanks have been described in the above embodiments and will not be repeated here.

[0283] Specifically, in this embodiment, the base station includes a sewage receiving part (not shown), and a sewage valve is provided at the bottom of the sewage tank 20. When the host 30 is connected to the base station, the first flow channel 11 in the spray structure 10 is connected to the first liquid storage tank through the first pipe 301, and the second flow channel 21 in the spray structure 10 is connected to the second liquid storage tank through the second pipe 302. The sewage receiving part is connected to the sewage valve to form a closed channel, so that the sewage and the cleaned material in the sewage tank 20 can be discharged directly. After the spray structure 10 is turned on, the first cleaning medium, the second cleaning medium and the cleaned material are discharged through the sewage valve.

[0284] In some embodiments, the wastewater receiving unit is connected to the sewer system via a third pipe. When the self-cleaning program is activated, the wastewater and materials to be cleaned in the wastewater tank 20 can be directly discharged into the sewer system through the wastewater receiving unit, thus eliminating the need for the user to empty the wastewater and materials to be cleaned from the wastewater tank 20, and also eliminating the need for the user to clean the wastewater tank 20, further improving the user experience.

[0285] The first drive device, the second drive device, and the controller have been described in the above embodiments and will not be repeated here.

[0286] It should be noted that the controller can be installed on the host 30 or inside the base station. This embodiment does not impose any restrictions on this, and an adaptive choice can be made according to actual needs.

[0287] Please refer to Figure 1 , Figure 3 , Figure 6 and Figure 7This application also provides a method for cleaning a sewage tank. The second cleaning method is applied to the cleaning equipment or system described in any of the above embodiments. The cleaning system includes a main unit 30, a base station, a sewage tank 20, a first driving device, and a second driving device. The base station is used to charge the main unit 30, and the main unit 30 can interface with the base station. The base station has a sewage receiving section.

[0288] A wastewater tank 20 is installed on the main unit 30. The wastewater tank 20 includes a tank body 201, a tank cover 202, and a spraying structure 10. The tank cover 202 is located on the top of the tank body 201. At least a portion of the spraying structure 10 is located inside the tank body 201. The spraying structure 10 has a first flow channel 11, a second flow channel 21, a first nozzle 31, and a second nozzle 32. The first nozzle 31 is connected to the first flow channel 11 and is used to spray a first cleaning medium, which is cleaning foam, into the tank body 201. The second nozzle 32 is connected to the second flow channel 21 and is used to spray a second cleaning medium, which is liquid water, into the tank body 201. A drain valve is also provided at the bottom of the wastewater tank 20, and a drain receiving part is connected to the drain valve.

[0289] The host 30 or base station has a controller, which is used to control the first driving device and the second driving device. The first driving device is used to drive the first cleaning medium to be input into the first flow channel 11; the second driving device is used to drive the second cleaning medium to be input into the second flow channel 21.

[0290] Please refer to Figure 1 , Figure 3 , Figure 6 and Figure 7 The second method for cleaning the wastewater tank includes the following steps:

[0291] Triggered by the sewage tank cleaning command, the controller controls the first drive device and the second drive device to first execute the first spraying action and then execute the second spraying action. The first spraying action is that the first drive device drives the first cleaning medium to spray out from the first nozzle 31, and the second spraying action is that the second drive device drives the second cleaning medium to spray out from the second nozzle 32.

[0292] For example, the controller is installed in the host 30 or base station. When a wastewater tank cleaning command is triggered, the controller first starts and controls the first drive device to perform the first spraying action. The first drive device drives the first cleaning medium from the first nozzle 31 to the inner wall of the wastewater tank 20, softening the substances to be cleaned adhering to the inner wall. Specifically, the first drive device drives the first cleaning medium into the first flow channel 11. The first nozzle 31 is connected to the first flow channel 11, and the first cleaning medium flows through the first flow channel 11 and is sprayed out from the first nozzle 31. The first cleaning medium sprayed out from the first nozzle 31 is cleaning foam, which is sprayed onto the inner wall of the wastewater tank 20. The cleaning foam softens the substances to be cleaned on the inner wall of the wastewater tank 20.

[0293] After the first spraying action is completed, the controller controls the second drive device to execute the second spraying action. The second drive device drives the second cleaning medium to spray from the second nozzle 32 onto the inner wall of the sewage tank 20, thereby flushing the inner wall of the sewage tank 20 and removing the accumulated cleaning material and the first cleaning medium inside the sewage tank 20. Specifically, the second drive device drives the second cleaning medium into the second flow channel 21. The second nozzle 32 is connected to the second flow channel 21, and the second cleaning medium flows through the second flow channel 21 and is sprayed out from the second nozzle 32. The second cleaning medium sprayed from the second nozzle 32 is liquid water. The liquid water is sprayed onto the inner wall of the sewage tank 20, flushing the inner wall of the sewage tank 20 and the softened cleaning material.

[0294] The sewage receiving part is connected to the sewage valve to form a closed channel, which can directly discharge the sewage and the object to be cleaned in the sewage tank 20. After cleaning is completed, the first cleaning medium, the second cleaning medium and the object to be cleaned are discharged through the sewage valve.

[0295] The first flow channel 11 and the second flow channel 21 allow the first and second cleaning media to operate independently during transport, ensuring the stability of their transport. Furthermore, the synergistic effect of the first and second cleaning media on the inner wall of the wastewater tank 20 significantly improves the cleaning effect while reducing the difficulty of scrubbing for users and enhancing the user experience.

[0296] By controlling the first and second drive devices with a controller, the first spraying action is executed first, followed by the second spraying action. This allows the first cleaning medium to soften the material to be cleaned on the inner wall of the sewage tank 20, and then the second cleaning medium to rinse the inner wall of the sewage tank 20. This removes the material to be cleaned and the first cleaning medium accumulated in the sewage tank 20, thereby improving the cleaning effect of the sewage tank 20, preventing the material to be cleaned from fermenting and producing odors, and reducing the difficulty of scrubbing for users, thus improving the user experience.

[0297] Please refer to Figure 3 and Figure 6 The cleaning method provided in this application embodiment, through the arrangement of the first nozzle 31 and the second nozzle 32, allows the first nozzle 31 and the second nozzle 32 to sequentially spray a first cleaning medium and a second cleaning medium into the wastewater tank 20. This softens the cleaning material adhering to the inner wall of the wastewater tank 20 through the first cleaning medium sprayed from the first nozzle 31, and then the second cleaning medium sprayed from the second nozzle 32 washes away the first cleaning medium and the inner wall of the wastewater tank 20, thus better rinsing away the cleaning material adhering to the inner wall of the wastewater tank 20, thereby improving the self-cleaning effect of the wastewater tank 20. When the spraying structure 10 is applied to the wastewater tank 20 of a cleaning device 100 (such as a floor scrubber), it can improve the pre-cleaning effect of the wastewater tank 20, thereby meeting the increasingly higher pre-cleaning requirements of users for cleaning devices such as floor scrubbers 100, and thus improving the user experience.

[0298] After the cleaning method is performed, the user does not need to scrub the wastewater tank 20 or only needs to scrub it briefly to keep the wastewater tank 20 clean, resulting in a high user experience.

[0299] In some embodiments, after the first spraying action is completed, a preset time interval is required before the second spraying action can be performed.

[0300] The controller can control the start-stop sequence of the first and second drive devices according to a predetermined program. For example, after the first spraying action is completed, the controller controls the first drive device to stop working. The controller starts a timing program, and after a preset interval, the controller controls the second drive device to start and perform the second spraying action.

[0301] Please refer to Figure 3 and Figure 6 By allowing a preset time interval between the first and second spraying actions, the first cleaning medium can fully contact the material to be cleaned on the inner wall of the wastewater tank 20, thereby effectively softening the material. This not only avoids potential interference between the first and second cleaning media but also significantly improves the degree of softening by extending the softening time. The adhesion of the fully softened material is greatly reduced, allowing the second cleaning medium to thoroughly remove it with lower energy consumption and less time during subsequent rinsing. This significantly improves the overall cleaning effect of the wastewater tank 20 while ensuring the efficiency of the cleaning medium.

[0302] In some embodiments, performing a first spraying action followed by a second spraying action is called a combined spraying operation. The combined spraying operation is repeated multiple times until a preset stopping condition is met.

[0303] The preset stop condition is that the number of repetitions reaches the preset number of cycles, or the degree of dirtiness of the liquid near the sewage outlet of sewage tank 20 meets the preset range.

[0304] During the cleaning process, the controller will first perform the first spraying action and then the second spraying action, which is recorded as a combined spraying operation. The controller will control the first drive device and the second drive device to repeatedly perform the combined spraying operation multiple times.

[0305] Please refer to Figure 3 and Figure 6 Specifically, the controller first activates the first drive device to perform a first spraying action, causing the first cleaning medium to be sprayed onto the inner wall of the wastewater tank 20, with a preset time interval to soften the material to be cleaned. After the preset time interval, the controller activates the second drive device to perform a second spraying action, which rinses the inner wall of the wastewater tank 20 and the material to be cleaned. The completion of these actions constitutes a single combined spraying operation. After completing a single combined spraying operation, the controller controls the first and second drive devices to repeat the combined spraying operation.

[0306] The controller can accumulate the number of times the combined spraying operation is executed. When the number of executions reaches the preset number of cycles, the controller terminates the combined spraying operation of the first and second drive devices and ends the cleaning process.

[0307] Alternatively, a sensor assembly can be installed at the drain outlet of the wastewater tank 20. The sensor assembly can detect the degree of dirtiness of the liquid near the drain outlet of the wastewater tank 20. When the degree of dirtiness of the liquid near the drain outlet of the wastewater tank 20 meets a preset range, the controller terminates the combined spraying operation performed by the first and second drive devices and ends the cleaning process.

[0308] Repeatedly performing the combined spraying operation can continuously soften stubborn substances through the repeated action of the first cleaning medium, and thoroughly remove the softened substances through repeated rinsing with the second cleaning medium, thereby significantly improving the cleaning ability for stubborn substances and enhancing the overall cleaning effect of the wastewater tank 20.

[0309] By setting the preset stop condition to the number of repetitions reaching the preset number of cycles, or the degree of dirtiness of the liquid near the drain outlet of the sewage tank 20 meeting the preset range, the cleaning effect of the sewage tank 20 is guaranteed while avoiding resource waste or excessive wear and tear on the cleaning equipment 100 caused by infinite cycles, thus ensuring the controllability of the cleaning process.

[0310] In some embodiments, a pre-processing action is performed before the first spraying action is performed for the first time. The pre-processing action is the second spraying action.

[0311] Before performing the first spraying action, the controller first controls the second drive device to perform a second spraying action. For example, the second cleaning medium is liquid water. The pretreatment action involves spraying liquid water onto the inner wall of the wastewater tank 20 via the second drive device.

[0312] The pretreatment process can clean the less contaminated areas on the inner wall of the wastewater tank 20 and moisten the surface of the object to be cleaned, providing an optimized basis for subsequent cleaning processes. This ensures the cleaning effect while reducing the consumption of the first cleaning medium.

[0313] Please refer to Figure 3 and Figure 6 In some embodiments, the wastewater tank cleaning command is actively triggered via manual button press or voice control.

[0314] Alternatively, the wastewater tank cleaning command can be automatically activated when the cleaning equipment has been shut down for a preset period of time.

[0315] Alternatively, the wastewater tank cleaning command is automatically triggered after the cleaning system's roller brush self-cleaning program ends.

[0316] For example, users can actively trigger the wastewater tank cleaning command via manual button presses or voice control, causing the controller to control the first and second drive devices to repeatedly perform combined spraying operations to complete the cleaning of the wastewater tank 20. Users can start the cleaning process in a timely manner according to actual needs, improving the flexibility of the cleaning process while ensuring cleaning effectiveness.

[0317] For example, when the cleaning equipment 100 is idle for a preset period of time, the cleaning equipment 100 automatically triggers a wastewater tank cleaning command. The controller starts and controls the first and second drive devices to repeatedly perform combined spraying operations to complete the cleaning of the wastewater tank 20. By automatically starting the cleaning equipment 100, the solidification of the materials to be cleaned, bacterial growth, or odor diffusion caused by long-term idleness can be avoided, thereby preventing odor problems caused by the deposition and fermentation of materials to be cleaned in the wastewater tank 20, and achieving odor suppression and antibacterial effects in the wastewater tank 20.

[0318] For example, after the roller brush self-cleaning program ends, the cleaning equipment 100 automatically triggers a wastewater tank cleaning command. The controller starts and controls the first and second drive devices to repeatedly perform the combined spraying operation to complete the cleaning of the wastewater tank 20. By simultaneously treating the wastewater tank 20 immediately after the roller brush cleaning is completed, the residual cleaning material on the roller brush is prevented from being deposited again in the wastewater tank 20, thereby improving the overall cleaning efficiency and hygiene level.

[0319] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0320] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0321] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or device.

[0322] The term "and / or" used in this application 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, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0323] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0324] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wastewater tank for a cleaning device, characterized in that, include: Box; A lid is provided on the top of the box body and is detachably connected to the box body; A spraying structure, at least a portion of which is disposed within the housing and connected to the housing cover; the spraying structure has a first flow channel, a second flow channel, a first nozzle, and a second nozzle; both the first nozzle and the second nozzle face the inner wall of the housing; the first flow channel and the second flow channel form a double-layer flow channel structure; The first nozzle is connected to the first flow channel, and the first nozzle is used to spray a first cleaning medium into the box, the first cleaning medium being cleaning foam; the second nozzle is connected to the second flow channel, and the second nozzle is used to spray a second cleaning medium into the box, the second cleaning medium being liquid water.

2. The sewage tank according to claim 1, characterized in that, The spraying structure also has a first connecting portion, wherein the first connecting portion, the first flow channel, and the first nozzle are connected in sequence; the first connecting portion is at least used to receive a gas-liquid mixture or cleaning foam, wherein the gas-liquid mixture is a mixture of cleaning agent and air; The first nozzle is equipped with a foaming filter. When the cleaning medium input to the first connecting part is the gas-liquid mixture, the foaming filter is used to generate the cleaning foam; or, when the cleaning medium input to the first connecting part is the cleaning foam, the foaming filter is used to increase the density of the cleaning foam.

3. The sewage tank according to claim 2, characterized in that, The spraying structure also has a second connecting part, the second connecting part, the second flow channel and the second nozzle are connected in sequence; the second connecting part is at least used to receive the second cleaning medium.

4. The sewage tank according to claim 3, characterized in that, The spraying structure also includes two docking parts, which are a first docking part and a second docking part. The first docking part, the first connecting part and the first flow channel are connected in sequence. The first docking part is at least used to receive the gas-liquid mixture or the cleaning foam delivered from the outside. The second docking part, the second connecting part, and the second flow channel are connected in sequence, and the second docking part is at least used to receive the second cleaning medium delivered from the outside.

5. The sewage tank according to claim 3, characterized in that, The spraying structure also includes a docking part, which is at least used to receive the second cleaning medium, the gas-liquid mixture, or the cleaning foam delivered from the outside; The docking part can be selectively connected to the first connecting part or the second connecting part through an internal three-way control valve. When the docking part receives the gas-liquid mixture or the cleaning foam, the docking part is connected to the first connecting part; when the docking part receives the second cleaning medium, the docking part is connected to the second connecting part.

6. The sewage tank according to any one of claims 1-5, characterized in that, The spraying structure is a ring-shaped component, with multiple first and second nozzles, which are alternately arranged on the circumferential outer wall of the spraying structure.

7. The sewage tank according to any one of claims 1-5, characterized in that, Both the first nozzle and the second nozzle face the inner sidewall of the top of the housing, and both have a gap between them and the inner sidewall of the housing.

8. The sewage tank according to claim 1, characterized in that, The spraying structure includes: First cover; Intermediate spray component; The second cover is located on opposite sides of the intermediate spraying component. The first cover is assembled with the intermediate spraying component to form a first flow channel, and the second cover is assembled with the intermediate spraying component to form a second flow channel. A first nozzle and a second nozzle are disposed on the intermediate spraying component. The first nozzle is connected to the first flow channel and is used to spray a first cleaning medium. The second nozzle is connected to the second flow channel and is used to spray a second cleaning medium.

9. The sewage tank according to claim 1, characterized in that, The bottom of the intermediate spraying component has a first mating part, and the top of the first cover has a first mounting part, wherein one of the first mating part and the first mounting part is inserted into the other. The top of the intermediate spraying component has a second mounting portion, and the bottom of the second cover has a second mating portion, wherein one of the second mating portion and the second mounting portion is inserted into the other. The outlet sides of both the first nozzle and the second nozzle are located on the outer side wall of the intermediate spraying component.

10. The sewage tank according to claim 1, characterized in that, The main body of the first cover is the first substrate, the main body of the intermediate spraying component is the intermediate substrate, and the main body of the second cover is the second substrate. The first substrate has a first mounting portion on its top surface, and the first mounting portion forms two first protrusions with a certain distance between them on the top surface of the first substrate. The bottom surface of the intermediate substrate has a first mating part, and the first mating part forms two first grooves with a certain distance between them on the bottom surface of the intermediate substrate; the bottom surface of the intermediate substrate has a first flow channel groove between the two first grooves. The top surface of the intermediate substrate has a second mounting part, and the second mounting part forms two second protrusions with a certain distance between them on the top surface of the intermediate substrate. The bottom surface of the second substrate has a second mating part, and the second mating part forms two second grooves with a certain distance between them on the bottom surface of the second substrate. The bottom surface of the second substrate has a second flow channel groove between the two second grooves. The two first protrusions and the two first grooves are inserted into each other, so that the first flow channel groove and the top surface of the first substrate form the first flow channel; the two second protrusions and the two second grooves are inserted into each other, so that the second flow channel groove and the top surface of the intermediate substrate form the second flow channel.

11. The sewage tank according to claim 10, characterized in that, The first cover, the intermediate spraying component, and the second cover are all annular components, which are assembled in sequence and fit together tightly. The thickness of the exposed surface on the outer side of the spraying structure is equal to the sum of the thicknesses of the first substrate, the first protrusion, the intermediate substrate, the second protrusion, and the second substrate. The first nozzle and the second nozzle have a safe thickness for the thinnest side opening of the substrate during the manufacturing process. The larger of the safe thicknesses corresponding to the first nozzle and the second nozzle is denoted as x, and the smaller one is denoted as y. The thickness of the intermediate substrate is [x, 2x), and the thicknesses of both the first substrate and the second substrate are less than y.

12. The sewage tank according to any one of claims 8-11, characterized in that, The inlet end of the first nozzle is connected to the portion of the first flow channel located in the middle spraying element to form a first branch; the inlet end of the second nozzle is connected to the portion of the second flow channel located in the middle spraying element to form a second branch; the first branch and the second branch are located between the first flow channel and the second flow channel.

13. The sewage tank according to claim 12, characterized in that, The height difference between the center of the first nozzle at the outlet end and the center of the second nozzle at the outlet end is less than 1 mm.

14. The sewage tank according to any one of claims 8-11, characterized in that, There are multiple first nozzles and multiple second nozzles, and the first nozzles and the second nozzles are alternately arranged on the intermediate spraying component.

15. The sewage tank according to any one of claims 8-11, characterized in that, The outlet end of the first nozzle is a circular hole with a diameter of 0.6-1.5 mm; The outlet end of the second nozzle is a strip-shaped hole, which extends along the direction adjacent to the first nozzle. The length of the strip-shaped hole is 3-9 mm, and the width of the strip-shaped hole is 0.3-0.7 mm. The distance between the outlet end of the first nozzle and the outlet end of the second nozzle is 0.8-1.5 mm.

16. The sewage tank according to any one of claims 8-11, characterized in that, The spraying structure is annular, and at least one of the first flow channel and the second flow channel forms an annular flow channel along the circumference of the spraying structure.

17. The sewage tank according to any one of claims 8-11, characterized in that, It also includes a sealing element, which is disposed on the lid and is used to form a circumferential seal between the lid and the box body; when the lid is assembled on the box body, the sealing element presses against the inner side wall of the box body; The spraying structure is adjacent to the seal, and the first nozzle and the second nozzle are close to the lower side of the seal, so that the cleaning medium sprayed by the first nozzle and the second nozzle can reach the seal position around the inner side wall of the box for cleaning.

18. The sewage tank according to any one of claims 8-11, characterized in that, The second cover is connected to the bottom end of the box lid, or the second cover is integrally formed on the bottom end of the box lid.

19. The sewage tank according to any one of claims 8-11, characterized in that, The first nozzle and the second nozzle are alternately arranged on the intermediate spraying component, and the spraying area of ​​the second nozzle on the inner side wall of the box at least covers the spraying area of ​​the adjacent first nozzle on the inner side wall of the box.

20. A cleaning device, characterized in that, include: The host is equipped with a controller, a first liquid storage tank and a second liquid storage tank, the first liquid storage tank and the second liquid storage tank being used to store cleaning media or liquids capable of generating predetermined cleaning media; The wastewater tank as described in any one of claims 1-19 is installed on the main unit; the first flow channel in the spraying structure is connected to the first liquid storage tank through a pipeline, and the second flow channel in the spraying structure is connected to the second liquid storage tank through a pipeline; A first driving device is used to drive the cleaning medium in the first storage tank to be input into the first flow channel; The second driving device is used to drive the cleaning medium in the second storage tank to be input into the second flow channel; The controller is used to control the first drive device and the second drive device.

21. A cleaning system, characterized in that, include: Host; A base station, which is used to charge the host, and the host can interface with the base station; The base station includes a sewage receiving section, a first liquid storage tank and a second liquid storage tank, which are used to store cleaning media or liquids capable of generating predetermined cleaning media. The sewage tank as described in any one of claims 1-19 is installed on the host computer; the bottom of the sewage tank is provided with a drain valve; when the host computer is connected to the base station, the first flow channel in the spray structure is connected to the first liquid storage tank through a pipeline, the second flow channel in the spray structure is connected to the second liquid storage tank through a pipeline, and the drain receiving part is connected to the drain valve. A first driving device is used to drive the cleaning medium in the first storage tank to be input into the first flow channel; The second driving device is used to drive the cleaning medium in the second storage tank to be input into the second flow channel; The host or the base station is equipped with a controller, which is used to control the first driving device and the second driving device.

22. A method for cleaning a sewage tank, characterized in that, This invention is applied to a cleaning system, which includes a main unit, a base station, a wastewater tank, a first drive device, and a second drive device. The base station is used to charge the main unit, and the main unit can interface with the base station. The base station has a wastewater receiving section. The wastewater tank is installed on the main unit. The wastewater tank includes a tank body, a tank cover, and a spraying structure. The tank cover is located on the top of the tank body. At least a portion of the spraying structure is located inside the tank body. The spraying structure has a first flow channel, a second flow channel, a first nozzle, and a second nozzle. The first nozzle is connected to the first flow channel and is used to spray a first cleaning medium, which is cleaning foam, into the tank body. The second nozzle is connected to the second flow channel and is used to spray a second cleaning medium, which is liquid water, into the tank body. A drain valve is also provided at the bottom of the wastewater tank, and the drain receiving part is connected to the drain valve. The host or the base station has a controller, which is used to control the first driving device and the second driving device. The first driving device is used to drive the first cleaning medium to be input into the first flow channel. The second driving device is used to drive the second cleaning medium to be input into the second flow channel; The wastewater tank cleaning method includes the following steps: Triggered by the sewage tank cleaning command, the controller controls the first driving device and the second driving device to first execute a first spraying action and then execute a second spraying action. The first spraying action is that the first driving device drives the first cleaning medium to spray out from the first nozzle, and the second spraying action is that the second driving device drives the second cleaning medium to spray out from the second nozzle.

23. The cleaning method according to claim 22, characterized in that, After the first spraying action is completed, a preset time interval is required before the second spraying action can be performed.

24. The cleaning method according to claim 22, characterized in that, Before the first spraying action is performed for the first time, a pre-processing action is performed, which is the second spraying action.

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