Wastewater tank and cleaning apparatus

Abstract

The present application relates to the technical field of cleaning apparatuses. Disclosed are a wastewater tank and a cleaning apparatus. The wastewater tank comprises a tank body and air guide members. The tank body is provided with a wastewater inlet and at least two air outlets, which are distributed horizontally in a first direction, wherein the wastewater inlet is located between the two air outlets, the air outlets and the wastewater inlet are oriented away from each other, and the air outlets are spaced apart from the wastewater inlet in the first direction. The air guide members are disposed in the tank body, and are located on the lower sides of the air outlets. On a flow path from the wastewater inlet to each of the air outlets, the corresponding air guide member comprises a first baffle and a second baffle that are sequentially distributed at an interval, and the lower side edge of the first baffle is lower than the lower side edge of the second baffle.

Description

Wastewater boxes and cleaning equipment

[0001] Related applications

[0002] This application claims priority to Chinese patent applications filed on January 24, 2025, application number 202510115982.7 and on March 17, 2026, application number 202620330822.4, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of cleaning equipment technology, and in particular to a wastewater box and cleaning equipment. Background Technology

[0004] For cleaning equipment with wastewater adsorption capabilities, a blower typically uses negative pressure to draw wastewater and air into a wastewater box. Due to gravity, the wastewater falls to the bottom, while the air is expelled from the blower, achieving water-air separation. In related technologies, to ensure effective water-air separation, the air ducts in the wastewater box are designed to be quite long, occupying excessive vertical space and requiring a large volume of wastewater box to meet operational requirements. Summary of the Invention

[0005] The main objective of this application is to provide a wastewater box and cleaning device that aims to reduce the volume occupied by the air passage structure inside the wastewater box, thereby increasing the effective volume of the wastewater box.

[0006] To achieve the above objectives, the wastewater box proposed in this application includes:

[0007] The box body has a sewage inlet and at least two air outlets horizontally distributed along a first direction. The sewage inlet is located between the two air outlets. The opening directions of the air outlets and the sewage inlet are opposite to each other, and the air outlets and the sewage inlet are isolated from each other in the first direction.

[0008] An air guide is disposed inside the box and located below the air outlet. In the flow path from the sewage inlet to the air outlet, the air guide includes a first baffle and a second baffle that are spaced apart in sequence. The lower side of the first baffle is lower than the lower side of the second baffle.

[0009] In one embodiment, the lower sides of the two second baffles are inclined from top to bottom in the direction in which the two second baffles approach each other.

[0010] In one embodiment, the inlet and the outlet are located at the top of the housing.

[0011] In one embodiment, the wastewater box includes an air outlet, which is disposed on the inner wall of the top cover of the box body. The air outlet and the top cover enclose each other to form an air outlet channel, and at one end, they enclose each other to form an air outlet. The air guide is disposed on the lower side of the air outlet, and the box body is provided with an air intake. The air outlet channel is connected to the air intake.

[0012] In one embodiment, the air outlet channel includes two sub-channels, which are symmetrically distributed around the straight line where the air intake and the sewage inlet are located, and are respectively connected to the corresponding air outlet. The ends of the two sub-channels away from the corresponding air outlets intersect and are connected to the air intake.

[0013] In one embodiment, the air outlet is provided with a foam baffle, the box body includes a second sidewall with the sewage inlet, the second sidewall is opposite to the air outlet and has a gap, the foam baffle is horizontally arranged and correspondingly arranged below the gap between the second sidewall and the air outlet, and the foam baffle and the air guide have an air passage gap.

[0014] In one embodiment, the housing includes a first sidewall disposed opposite to the sewage inlet, the first sidewall being provided with an exhaust pipe extending vertically, the exhaust pipe being opposite to the sewage inlet, the air intake being opened at the top of the exhaust pipe, and the air outlet being provided with a clearance opening, the clearance opening being sealed against the top periphery of the exhaust pipe.

[0015] In one embodiment, the wastewater box further includes a water-separating plate disposed within the box body. The water-separating plate is horizontally disposed and has a vertical distance from the top cover of the box body. The wastewater inlet is disposed between the top cover of the box body and the water-separating plate.

[0016] In one embodiment, the periphery of the water-proof plate is spaced from the inner wall of the box body, and a third baffle is provided on the side of the water-proof plate near the air outlet. The third baffle is located on the side of the air guide member opposite to the air outlet and extends vertically downward from the edge of the water-proof plate.

[0017] In one embodiment, the baffle plate has a diversion hole in the middle of the first direction, and the diversion hole is located in the air inlet direction of the sewage inlet.

[0018] In one embodiment, the water-blocking plate is detachably installed inside the box.

[0019] In one embodiment, the housing includes a base and a top cover, the top cover having a downwardly bent mounting edge, the inlet being disposed on the mounting edge, and the top cover and the base being closably connected.

[0020] In one embodiment, a drain outlet is provided at the bottom of the box body, and a movable drain door is provided in the sewage box corresponding to the drain outlet. The drain door has a closed state where the drain outlet is closed and an open state where the drain outlet is open.

[0021] This application also proposes a cleaning device comprising a main unit and a wastewater box as described above, the wastewater box being installed on the main unit.

[0022] The technical solution of this application provides a sewage inlet and at least two air outlets horizontally distributed along a first direction within the housing. The sewage inlet is located between the two air outlets, and the inlet and outlets are positioned opposite each other. For example, the sewage inlet faces rearward to connect to surface sewage, while the air outlets face forward to connect to the negative pressure source of the main unit. Furthermore, the air outlets and sewage inlet are isolated from each other in the first direction, preventing direct horizontal communication between the airflow discharge area and the sewage impact area. This allows the airflow from the sewage inlet to first flow horizontally and then split along the first direction before flowing vertically back to the air outlet, reducing the flow rate and velocity of water and air in a single direction, which is beneficial for water-air separation. Combined with the air guide arranged in the space below the air outlet, the first baffle and the second baffle form a stepped baffle layout from low to high. In the airflow path from the sewage inlet to either air outlet, it is ensured that any rising liquid surface or surging liquid that may occur during the exhaust process is first intercepted by the air guide and will not directly contact the air outlet. In this way, as the airflow is horizontally split and flows upwards back to the outlet, it first bypasses the lower first baffle and then flows upwards through the higher second baffle, thus constructing a multi-stage droplet interception barrier with height differences: the lower first baffle effectively blocks large droplets and foam, while the higher second baffle further captures fine atomized droplets, improving gas-liquid separation efficiency. Since the entire airflow channel unfolds horizontally, there is no need to stack multiple layers of structure vertically, reducing the space occupied by the box's height and allowing more volume inside the box to be used for liquid storage, thereby increasing the effective volumetric efficiency of the wastewater box. Attached Figure Description

[0023] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 is a cross-sectional view of an embodiment of the wastewater box provided in this application;

[0025] Figure 2 is a schematic diagram of the structure of the top cover and the air outlet component in Figure 1;

[0026] Figure 3 is a schematic diagram of the structure of the box and the water-proof plate in Figure 1;

[0027] Figure 4 is a schematic diagram of the air outlet component in Figure 1 without the foam baffle.

[0028] Figure 5 is a structural schematic diagram of the air outlet component in Figure 1;

[0029] Figure 6 is a schematic diagram of the water-proof plate;

[0030] Figure 7 is a magnified view of part A in Figure 1;

[0031] Figure 8 is a structural schematic diagram of an embodiment of the wastewater box provided in this application;

[0032] Figure 9 is a schematic diagram of the explosion of the sewage box in Figure 8;

[0033] Figure 10 is a schematic diagram of the structure of the air outlet, air guide and water baffle in Figure 8;

[0034] Figure 11 is a cross-sectional view of the sewage box in Figure 8;

[0035] Figure 12 is a magnified view of part B in Figure 11;

[0036] Figure 13 is a structural schematic diagram of an embodiment of the cleaning equipment provided in this application.

[0037] Reference numerals: 100, Box body; 110, Sewage inlet; 120, Exhaust pipe; 121, Air intake; 130, Base; 131, Sewage outlet; 140, Top cover; 141, Mounting edge; 151, First side wall; 152, Second side wall; 160, Air outlet; 170, Sewage door; 51, Guide section; 142, Mounting groove; 101, Air guide channel; 200, Air guide component; 210, First baffle; 220, Second baffle; 300, Water baffle; 310, Third baffle; 320, Diverter hole; 400, Air outlet component; 410, Guide edge; 401, Air outlet channel; 402, Sub-channel; 420, Foam baffle; 430, Clearance opening.

[0038] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] In existing technologies, cleaning equipment with washing and adsorption functions typically uses negative pressure generated by a fan to draw the washed wastewater into a wastewater box. The wastewater box then utilizes an air duct design to achieve water-air separation, storing the wastewater within the box, while the airflow is discharged to the outside by the fan. The air ducts in the wastewater box are usually unidirectional, flowing from top to bottom and then back up. This requires a relatively large wastewater box, and due to the high airflow velocity, the duct structure is quite long, occupying space both vertically and horizontally. This results in a small space within the wastewater box for wastewater, making it difficult to clean lower areas and causing the box to fill up easily, requiring frequent replacements and negatively impacting the user experience.

[0043] This application proposes a sewage box.

[0044] Please refer to Figures 1 to 3. In one embodiment of this application, the wastewater box includes:

[0045] The box body 100 has a sewage inlet 110 and at least two air outlets 160 horizontally distributed along a first direction. The sewage inlet 110 is located between the two air outlets 160. The air outlets 160 and the sewage inlet 110 are arranged in opposite directions and are isolated from each other in the first direction.

[0046] The air guide 200 is disposed inside the housing 100 and located below the air outlet 160. In the flow path from the sewage inlet 110 to the air outlet 160, the air guide 200 includes a first baffle 210 and a second baffle 220 that are distributed at intervals in sequence. The lower side of the first baffle 210 is lower than the lower side of the second baffle 220.

[0047] The technical solution of this application provides a sewage inlet 110 and at least two air outlets 160 horizontally distributed along a first direction in the housing 100. The sewage inlet 110 is located between the two air outlets 160, and the opening directions of the sewage inlet 110 and the air outlets 160 are opposite to each other. For example, the sewage inlet 110 faces backward to connect to ground sewage, while the air outlets 160 face forward to connect to the negative pressure source of the main unit. Furthermore, the air outlets 160 and the sewage inlet 110 are isolated from each other in the first direction to avoid direct horizontal connection between the airflow discharge area and the sewage impact area. This causes the airflow from the sewage inlet 110 to flow horizontally first and then be split along the first direction before flowing vertically back to the air outlet 160, reducing the flow rate and velocity of water and air in a single direction, which is beneficial for water and air separation. With the air guide 200 positioned below the air outlet 160, the first baffle 210 and the second baffle 220 form a stepped baffle layout from low to high. This ensures that any rising liquid level or surging liquid during exhaust is first intercepted by the air guide 200 along the airflow path from the inlet 110 to any outlet 160, preventing direct contact with the outlet 160. This allows the airflow to bypass the lower first baffle 210 and then ascend through the higher second baffle 220 as it laterally branches and flows back to the outlet 160, creating a multi-stage droplet interception barrier with height differences: the lower first baffle 210 effectively blocks large droplets and foam, while the higher second baffle 220 further captures fine atomized droplets, improving gas-liquid separation efficiency. Since the entire airflow channel is laid out horizontally, there is no need to stack multiple layers of structure in the vertical direction, which reduces the space occupied by the height of the box 100, allowing more volume inside the box 100 to be used for liquid storage, thus improving the effective volume ratio of the sewage box.

[0048] It should be noted that the two air outlets 160 are horizontally distributed and spaced apart along the first direction. This first direction is horizontal or approximately horizontal. The location of the sewage inlet 110 between the two air outlets 160 is understood as follows: the two air outlets 160 are located on either side of the sewage inlet 110 in the first direction. Correspondingly, the two air guides 200 are also located on either side of the sewage inlet 110 in the first direction. Here, the first direction does not necessarily mean a completely horizontal state; it can be a staggered arrangement in the vertical direction. Furthermore, it does not specifically refer to a symmetrical horizontal arrangement, but can be a straight line or a broken line arrangement, such as the two angles of a triangle being on either side of another angle, or the edge points being on either side of the middle point in a three-point line. Similarly, the vertical distribution can be understood as a spaced or partially staggered arrangement along the horizontal projection direction, which can be the same vertical straight line or different vertical straight lines. The following description focuses on the configuration of the inlet 110 facing rearward and the outlet 160 facing forward. The air guide 200 is located below the outlet 160 and has a first baffle 210 and a second baffle 220 with gradually changing thickness in the direction of airflow. It can be seen that the air guide 200 is not directly below the outlet 160, but is positioned diagonally below and forward of the outlet 160. This results in the outlet 160 and the corresponding air guide 200 being arranged in a close vertical and horizontal configuration. This ensures that the water-air mixture in any exhaust channel must bypass the corresponding air guide 200 before being discharged from the corresponding outlet 160, thereby extending the channel length and improving the separation degree of the water-air mixture.

[0049] It can be understood that the isolation of the sewage inlet 110 and the air outlet 160 in the first direction means that the sewage containing water and air entering the box 100 through the sewage inlet 110 flows from back to front and cannot directly connect to the air outlet 160 horizontally. Instead, it is blocked by the inner wall of the box 100, resulting in horizontal diversion, and under the action of the air guide 200, it tends to flow downwards, and then from bottom to top and from front to back towards the air outlet 160. Furthermore, the descriptions of front, back, top, bottom, left, and right directions in this solution refer to the posture of the sewage box during the operation of the cleaning equipment, and are understood in terms of the front-back, top-bottom, left-right, and right-side directions of the cleaning equipment. Correspondingly, as shown in Figure 2, the first direction is described using the left-right extension direction as an example, and will not be elaborated further here. Without loss of generality, this embodiment provides at least two air outlets 160, which are respectively located on the horizontal sides of the sewage inlet 110. This means that for three air outlets 160, one horizontal side of the sewage inlet 110 can have two air outlets 160 and the other side can have one air outlet 160. Alternatively, for four air outlets 160, one horizontal side of the sewage inlet 110 can have two or three air outlets 160 and the other side can have two or one air outlet 160.

[0050] In one embodiment, referring to Figures 2, 4, and 5, the lower sides of the two second baffles 220 are inclined downwards in the direction in which they approach each other. It can be understood that the two second baffles 220 are horizontally distributed along the first direction and located on the left and right sides of the inlet 110, respectively. In the direction in which the two second baffles 220 approach each other, that is, towards the center of the inlet 110, their lower sides are inclined downwards, such that the position of each second baffle 220 near the inlet 110 is lower than the position away from the inlet 110. Furthermore, when the sewage or splashing droplets flowing in from the inlet 110 impact the first baffle 210, most of them are already intercepted. A small portion of the splashing droplets or foam, upon impacting the second baffle 220, can flow downwards along its inclined lower side back to the bottom of the box 100, preventing the liquid from accumulating at the lower edge of the baffle and then crossing the baffle to enter the upper air outlet 160 due to shaking or airflow disturbance.

[0051] In one embodiment, referring to Figures 1 and 2, the inlet 110 and outlet 160 are located at the top of the housing 100. It is understood that the water-air mixture separates into wastewater under gravity. Positioning the inlet 110 and outlet 160 at the top of the housing 100 can be achieved by either opening them in the top cover 140 of the housing 100 or by providing air passages on the top cover 140 of the housing 100, extending horizontally. This increases the space from the outlet 160 and inlet 110 to the bottom of the housing 100, fully utilizing the space within the housing 100 and increasing the volume of the housing 100 for storing wastewater. Meanwhile, two air outlets 160 are positioned on either side of the sewage inlet 110 at a horizontal level. The water-air mixture entering through the sewage inlet 110 flows in a direction intersecting the first direction, is guided to circulate at the same or adjacent horizontal level, and then flows out of the box 100 through the air outlets 160. This not only increases the flow path and time but also reduces the flow speed or causes the water-air mixture to collide with the walls multiple times during the flow, thereby promoting water-air separation and improving the degree of sewage precipitation. Without loss of generality, the air outlets 160 and the sewage inlet 110 can be located on the top wall of the box 100.

[0052] In one embodiment, referring to Figures 1, 2, and 5, the wastewater box includes an air outlet 400, which covers the inner wall of the top cover 140 of the box body 100. The air outlet 400 and the top cover 140 enclose an air outlet channel 401, and form an air outlet 160 at one end. An air guide 200 is disposed on the lower side of the air outlet 400. The box body 100 is provided with an air intake 121, and the air outlet channel 401 is connected to the air intake 121. It can be understood that the air outlet channel 401 is connected to the negative pressure source of the main unit through the air intake 121, thereby integrating the air outlet function module inside the top cover 140. This avoids the need to open additional air outlet channels on the side wall or bottom of the box body 100, utilizes the unused space inside the top cover 140, and does not require additional external dimensions of the box body 100. Since the air outlet duct 401 is located inside the top cover 140 and isolated from the liquid storage chamber inside the housing 100, even if sewage is violently shaken inside the housing 100 or the equipment is tilted, liquid is unlikely to enter the air outlet duct 401, thus reducing the risk of sewage backflow into the main unit's air duct. Simultaneously, in conjunction with the aforementioned air guide component 200 located below the air outlet duct 401, which has a stepped height distribution and an inward tilting structure, gravity is used for water-air separation, and it can also intercept any rising airflow and allow droplets to settle, ensuring that only clean gas enters the air outlet duct 401.

[0053] Further, in this embodiment, referring to Figures 1 to 3, the air outlet duct 401 includes two sub-ducts 402. The two sub-ducts 402 are symmetrically distributed around the straight line where the air intake 121 and the sewage inlet 110 are located, and are respectively connected to the corresponding air outlets 160. The ends of the two sub-ducts 402 away from the corresponding air outlets 160 intersect and are connected to the air intake 121. It can be understood that after the water and sewage fluid is drawn in from the sewage inlet 110 and splits in the first direction, it flows back vertically, and then enters the sub-ducts 402 from the two air outlets 160 that are symmetrically distributed around the straight line where the air intake 121 and the sewage inlet 110 are located. Then, it flows out of the air intake 121 through the sub-ducts 402. The ends of the two sub-ducts 402 away from their respective air outlets 160 intersect and converge near the center of the box 100, and are connected to the air intake 121 provided on the box 100, thereby forming a Y-shaped or double-branch confluence airflow path. This design allows the main unit's negative pressure source to uniformly and synchronously draw gas from both sides through a single suction port 121, effectively balancing the airflow resistance of the two air outlets 160. This avoids airflow bias or insufficient local negative pressure caused by preferential conduction on one side, thereby improving the overall stability and efficiency of gas-liquid separation. Simultaneously, the symmetrical arrangement of the two sub-channels 402, sharing a single suction port 121, simplifies the duct connection, resulting in a compact and streamlined exhaust duct 401, reducing eddies and pressure loss. Furthermore, the central placement of the wastewater inlet 110 between the exhaust ports of the two sub-channels 402 enhances the compactness of the air duct area at the top of the housing 100, increasing the effective volume of the housing 100 while reducing its overall size.

[0054] In one embodiment, referring to Figures 2 and 5, the air outlet 400 is provided with a foam baffle 420, and the housing 100 includes a second sidewall 152 with a sewage inlet 110. The second sidewall 152 is opposite to and spaced from the air outlet 160. The foam baffle 420 is horizontally positioned and correspondingly positioned below the gap between the second sidewall 152 and the air outlet 160. The foam baffle 420 and the air guide 200 have an air passage gap. When sewage is injected into the housing 100 at high speed from the top sewage inlet 110, a large amount of foam is easily generated and diffuses towards the air outlet 160 with the airflow. Especially in the transverse gap area near the second sidewall 152 and the air outlet 160, the foam is easily drawn into the air outlet channel 401 by negative pressure, thereby clogging the filter or entering the main unit's air duct. To this end, a foam baffle 420 is positioned directly below the high-risk area, forming a horizontal interception barrier. Firstly, its location below the air outlet 160 and lower than the inlet of the air outlet channel 401 effectively prevents rising foam from directly entering the air outlet 160. Secondly, its horizontal extension covers the projected area of ​​the gap between the second sidewall 152 and the air outlet 160, intercepting foam that climbs or drifts laterally along the sidewall and guiding it back to the liquid surface, preventing foam from bypassing the exhaust channel. The foam baffle 420 and the second sidewall 152 can be fitted together or have a small gap. The foam baffle 420 and the baffle of the air guide 200 have a horizontal air passage distance. This air passage distance guides the airflow to flow obliquely towards the air outlet 160 after being intercepted by the water droplets of the air guide 200. The size of this air passage distance is adapted to the width of the air passage within the housing 100 to avoid areas of air passage bottlenecks, thereby ensuring the uniformity of the airflow velocity.

[0055] In one embodiment, referring to Figures 2 to 4, the housing 100 includes a first sidewall 151 disposed opposite to the sewage inlet 110. The first sidewall 151 has a vertically extending exhaust pipe 120. The exhaust pipe 120 is opposite to the sewage inlet 110, and an air intake 121 is formed at the top of the exhaust pipe 120. The air outlet 400 has a clearance opening 430, which seals against the top periphery of the exhaust pipe 120. The exhaust pipe 120 is arranged directly opposite the sewage inlet 110, and its top has the air intake opening 121 for connecting to the host negative pressure system. The edge contour of the clearance opening 430 matches the top periphery of the exhaust pipe 120, and in the assembled state, they tightly abut against each other to form a sealed fit. Correspondingly, the air outlet 400 and the top of the exhaust pipe 120 are sealed together, and the air inlet 121 is integrated at the top of the exhaust pipe 120, preventing sewage vapor or tiny droplets from seeping into the air outlet channel 401 from the edges of the air outlet 400 and the top cover 140, thus ensuring the effect of water-air separation. At the same time, since the exhaust pipe 120 extends vertically from the first side wall 151 and is located directly opposite the sewage inlet 110, the reverse airflow generated by the sewage inlet impact can form a horizontal circulation in the box 100, which helps to promote foam breakage and droplet settling, and causes the airflow to flow vertically around to the air outlet 160 after splitting to the left and right. Combined with the precise sealing fit between the clearance port 430 and the top of the exhaust pipe 120, reliable communication between the air outlet channel 401 and the air inlet 121 is ensured, while avoiding the risk of air leakage or backflow caused by poor sealing.

[0056] In one embodiment, referring to Figures 1, 3 and 6, the wastewater box also includes a water-separating plate 300 disposed inside the box body 100. The water-separating plate 300 is horizontally disposed and has a vertical distance from the top cover 140 of the box body 100. The wastewater inlet 110 is disposed between the top cover 140 of the box body 100 and the water-separating plate 300. It is understood that the baffle plate 300 and the top cover 140 of the box body 100 maintain a certain distance in the vertical direction, forming a diversion cavity that connects to the sewage inlet 110. The sewage inlet 110 is directly opposite the diversion cavity in the horizontal direction, so that the sewage drawn in first enters the diversion cavity. The baffle plate 300 acts as a barrier, solving the problem of liquid splashing and foam rising caused by direct impact on the water surface during high-speed sewage intake. When sewage is injected from the sewage inlet 110, the baffle plate 300 acts as the first horizontal barrier, preventing the airflow from directly impacting the liquid surface, forcing the airflow to diffuse to both sides and downwards along the surface of the baffle plate 300, thereby suppressing the diffusion of droplets and bubbles generated by the initial impact to the air outlet area. At the same time, the baffle plate 300 is arranged horizontally and does not extend to the bottom of the box body 100, which neither compresses the liquid storage space nor causes the water surface to oscillate under the action of airflow, reducing the water carried by the airflow after it flows around, ensuring the water-air separation effect, and taking into account both high effective volume and strong anti-splash performance.

[0057] Further, in this embodiment, referring to Figures 3 and 6, the periphery of the water-separating plate 300 is spaced from the inner wall of the housing 100. A third baffle 310 is provided on the side of the water-separating plate 300 near the air outlet 160. The third baffle 310 is located on the side of the air guide 200 opposite to the air outlet 160 and extends vertically downward from the edge of the water-separating plate 300. It can be understood that a gap is maintained between the periphery of the water-separating plate 300 and the inner wall of the housing 100 to allow gas and liquid to flow below the water-separating plate 300, avoiding the formation of a closed cavity that would cause air resistance. At the same time, the third baffle 310 is located on the side of the air guide 200 opposite to the air outlet 160, thereby forming a longitudinal barrier in the gas flow channel between the water-separating plate 300 and the air guide 200. On the one hand, it solves the problem of sewage bypassing the air guide 200 and flowing directly to the air outlet 160 due to airflow short-circuiting or liquid surface fluctuations below the baffle plate 300: When sewage enters from the inlet 110 and flows below the baffle plate 300, the third baffle 310 can prevent the liquid from spreading laterally along the bottom of the baffle plate 300 towards the air outlet 160, forcing the liquid to first sink downwards and bypass to the area of ​​the air guide 200, ensuring that it can approach the air outlet 160 only after passing through the stepped interception path formed by the first baffle 210 and the second baffle 220. This enhances the flow constraint on low-speed floating foam and fine droplets, thereby improving the controllability of the flow path for gas-liquid separation and enhancing the gas-liquid separation effect. At the same time, the third baffle 310 also forms a gas flow guide below the baffle plate 300, suppressing the vortex of airflow below the baffle plate 300, so as to ensure that the airflow can flow towards the air outlet 160 according to the preset flow direction. Without loss of generality, an air passage notch is provided on the side opposite to the third baffle 310. The air passage notch has a gap with the inner wall of the box 100 to allow the left and right airflow formed by the third baffle 310 to pass through, ensuring the gas flow rate and water-gas separation efficiency.

[0058] Furthermore, in this embodiment, referring to Figures 3 and 6, the baffle plate 300 has a diversion hole 320 in the middle of the first direction, and the diversion hole 320 is located in the air inlet direction of the sewage inlet 110. It can be understood that the gas-liquid mixture injected at high speed from the sewage inlet 110 can partially pass down through the baffle plate 300 via the diversion hole 320 and enter the liquid storage area at the bottom of the box 100. On the one hand, the diversion hole 320, as a controllable discharge channel, guides the mainstream sewage downwards, preventing liquid from accumulating above the baffle plate 300 or spreading disorderly along its bottom surface, thereby reducing splashing and foam generation. On the other hand, the airflow that does not pass through the diversion hole 320 is blocked by the baffle plate 300 and diverted along both sides below it. Combined with the stepped baffle structure of the third baffle plate 310 and the air guide 200, a symmetrical and clearly defined gas flow channel is formed. Combined with the gas flow formed in the middle of the diversion hole 320, the vortex airflow formed by the gas flow channels on the left and right can be canceled, eliminating the airflow vortex at the lower water surface and preventing foam on the water surface from being carried up by the vortex to the air outlet 160, thus improving the water-air separation effect.

[0059] In one embodiment, referring to Figures 1, 3, and 6, the baffle plate 300 is detachably installed inside the housing 100. It is understood that the baffle plate 300 can be quickly assembled and disassembled with the exhaust pipe 120 of the housing 100 via structures such as snap-fits, sliding grooves, or limiting bosses. After long-term use of the wastewater box, when dirt, hair, or residual foam adheres to the surface of the baffle plate 300 and its surrounding structure, the baffle plate 300 can be detached for cleaning. Simultaneously, the detachable structure facilitates maintenance or upgrades when the baffle plate 300 ages, is damaged, or needs to be replaced with a different functional version, improving the durability of the wastewater box and the user experience. Specifically, the baffle plate 300 has an annular opening corresponding to the exhaust pipe 120, and the periphery of the annular opening has vertically extending mounting walls that engage with the exhaust pipe 120, allowing the baffle plate 300 to be detachably installed inside the housing 100. Without loss of generality, a magnet is installed on the baffle plate 300, and a Hall sensor is correspondingly installed on the main unit to detect whether the baffle plate 300 is installed in place.

[0060] In one embodiment, referring to Figures 1 and 2, the housing 100 includes a base 130 and a top cover 140. The top cover 140 has a downwardly bent mounting edge 141, and a sewage inlet 110 is disposed on the mounting edge 141. The top cover 140 and the base 130 are closable. It can be understood that the top cover 140 and the base 130 are closable through a structure such as a hinge, snap-fit, or slide rail. Integrating the sewage inlet 110 into the mounting edge 141 of the top cover 140 not only allows the sewage inlet to be naturally located at the top edge of the housing 100, facilitating alignment and connection with the main unit's piping, but also enhances the sealing strength of the top cover 140 and the base 130 when closed by utilizing the downward bending structure of the mounting edge 141. The closable connection between the top cover 140 and the base 130 enhances the user's ease of cleaning the interior of the box 100. When the top cover 140 is opened, the water baffle 300, air guide 200, air outlet 400, and the inner wall of the box 100 are fully exposed, facilitating thorough rinsing of residual stains, hair, or foam, and preventing odors, blockages, or performance degradation caused by cleaning dead spots. Simultaneously, in the closed state, the mounting edge 141 fits tightly against the upper edge of the base 130, and combined with a sealing ring or interference fit, ensures good airtightness around the sewage inlet 110 and the entire box 100, preventing negative pressure leakage or sewage overflow.

[0061] In one embodiment, referring to Figures 1 and 7, a drain port 131 is provided at the bottom of the box 100. A movable drain door 170 is provided corresponding to the drain port 131. The drain door 170 has a closed state (closing the drain port 131) and an open state (opening the drain port 131). It can be understood that when the drain door is closed, the drain door 170 tightly seals the drain port 131, ensuring that the liquid inside the wastewater box will not leak during use, maintaining the overall sealing and the stability of the negative pressure system. When the drain door is open, the drain door 170 opens the drain port 131, allowing the wastewater accumulated inside the box 100 to be discharged quickly and thoroughly, facilitating the user to empty the waste without disassembling the box 100. The main unit is equipped with a telescopic structure to control the switching between the open and closed states of the drain door 170, realizing automatic wastewater discharge from the wastewater box. This telescopic structure can be independently installed in the main unit or share a motor with other moving parts. Without losing its generality, the drain door 170 is usually opened and closed by sliding, rotating or pressing to pop it out. It is easy to operate and highly reliable. With the position setting of the bottom drain port 131, gravity can also be used to accelerate the drainage and improve the emptying efficiency.

[0062] In existing technologies, cleaning equipment with washing and adsorption functions typically uses negative pressure generated by a fan to draw the washed wastewater into a wastewater box. The wastewater box then utilizes an air duct design to achieve water-air separation, storing the wastewater within the box, while the airflow is discharged to the outside by the fan. The air ducts in the wastewater box are usually unidirectional, flowing from top to bottom and then back up. This requires a relatively large wastewater box, and due to the high airflow velocity, the duct structure is quite long, occupying space both vertically and horizontally. This results in a small space within the wastewater box for wastewater, making it difficult to clean lower areas and causing the box to fill up easily, requiring frequent replacements and negatively impacting the user experience.

[0063] This application proposes a sewage box.

[0064] Referring to Figures 8 and 9, in one embodiment of this application, the wastewater box includes:

[0065] The box body 100 has a sewage inlet 110 and at least two air outlets 160, with the two air outlets 160 located on either side of the sewage inlet 110 at a horizontal distance. The box body 100 also has a first sidewall 151 located in the air inlet direction of the sewage inlet 110.

[0066] Two air guides 200 are disposed inside the housing 100. The two air guides 200 are located on the horizontal sides of the sewage inlet 110 and connected to the periphery of the sewage inlet 110. The first side wall 151 and the air guides 200 form an air guide channel 101. The air outlet 160 is located on the side of the air guide 200 away from the first side wall 151 and is connected to the corresponding air guide channel 101.

[0067] The technical solution of this application provides at least two air outlets 160 within the housing 100, and at least one air outlet 160 on each side of the inlet 110 in the horizontal direction. Simultaneously, air guides 200 are provided on each side of the inlet 110 corresponding to the air outlets 160. The air guides 200 guide the water-air mixture entering from the inlet 110 to the first sidewall 151, forming independent airflow channels 101 after diversion from the first sidewall 151. This allows the water-air mixture entering from the inlet 110 to flow towards the airflow channels 101 on both sides of the horizontal direction, and then flow out from their respective air outlets 160, reducing the single-air flow rate. The flow rate and velocity in each direction are conducive to water-air separation. Furthermore, the sewage inlet 110, the air outlet 160, or the air guide 200 are distributed horizontally or nearly horizontally, which reduces the space occupied by the air guide channel 101 in the vertical direction and achieves a horizontal spatial layout. This reduces the space occupied inside the box 100. In this way, the sewage box can not only effectively achieve water-air separation, store sewage in the box 100, and discharge gas, but also obtain a high effective volume, improving the continuous storage capacity of the sewage box. Alternatively, it can effectively reduce the height of the sewage box, thereby adapting to clean environments with smaller heights.

[0068] It should be noted that, for example, if the two air outlets 160 are located on either side of the sewage inlet 110, or if the two air guides 200 are located on either side of the sewage inlet 110, the term "on either side" does not specifically refer to a completely horizontal arrangement, but rather a staggered arrangement in the vertical direction. Furthermore, it does not specifically refer to a symmetrical horizontal arrangement, but rather a straight or zigzag arrangement, such as the two corners of a triangle on either side of another corner, or the edge points on either side of the middle point in a three-point line. Thus, the two air outlets 160 can be located on either side of the sewage inlet 110, and the two air guides 200 can also be located on either side of the sewage inlet 110. The air outlets 160 and their corresponding air guides 200 are arranged in an adjacent vertical or horizontal configuration, ensuring that the water-air mixture in any airflow channel 101 must bypass the corresponding air guide 200 before exiting from the corresponding air outlet 160. This extends the flow channel length and improves the separation of the water-air mixture. In addition, a first sidewall 151 is provided in the air inlet direction of the sewage inlet 110. The water and air mixture entering the box 100 from the sewage inlet 110 will be split on the first sidewall 151 and split to the horizontal sides of the sewage inlet 110 respectively, that is, flow along their respective air guide channels 101.

[0069] It can be understood that for any water-air mixture flowing in any airflow channel 101, the process is as follows: it first enters the box 100 from the inlet 110, and then flows towards an airflow channel 101 under the action of the first sidewall 151. The air guide 200 has a plate-like structure that is parallel (or nearly parallel) to the vertical direction. During this process, due to the blocking effect of the air guide 200, the water-air mixture does not flow directly into the corresponding outlet 160, but flows along the horizontal extension direction of the first sidewall 151 and the air guide 200. Then, at the edge of the horizontal side of the air guide 200, it changes direction and bypasses the air guide 200, continuing to flow to the outlet. The air outlet 160 can also flow along the vertical extension direction of the air guide 200, and then change direction at the edge of the vertical side of the air guide 200 before bypassing the air guide 200 and continuing to flow to the air outlet 160. This prolongs the flow time and flow path of the water-air mixture, and also separates the water-air mixture into individual flows, promoting the degree of water-air separation. This ensures that the sewage falls down under gravity, while the gas is adsorbed by the fan and discharged from the air outlet 160. Moreover, it can make full use of the horizontal space of the box 100, reduce the use of vertical space, and thus reduce the height of the box 100 or increase the effective volume of the box 100.

[0070] Without loss of generality, this embodiment provides at least two air outlets 160, located on both sides of the horizontal plane of the inlet 110. This means that for three air outlets 160, one side of the inlet 110 can have two air outlets 160 and the other side has one air outlet 160. Alternatively, for four air outlets 160, one side of the inlet 110 can have two or three air outlets 160 and the other side can have two or one air outlet 160. Of course, based on the concept of this application, three or more airflow channels 101 can also be provided in a single layer of space at or near the horizontal plane of the housing 100 to divert as much water-air mixture as possible, which can also achieve the same effect as this solution in promoting water-air separation, reducing the height of the housing 100, or increasing the effective volume.

[0071] In one embodiment, referring to Figures 9 and 11, the air outlet 160 and the wastewater inlet 110 are located at the top of the housing 100. It is understood that the water-air mixture separates into wastewater under gravity. Positioning the wastewater inlet 110 and air outlet 160 at the top of the housing 100 can be achieved by opening them in the top cover 140 of the housing 100, or by providing air passages on the top cover 140 of the housing 100, extending horizontally. This increases the space from the air outlet 160 and wastewater inlet 110 to the bottom of the housing 100, fully utilizing the space within the housing 100 and increasing the volume of the housing 100 for storing wastewater. Meanwhile, two air outlets 160 are positioned on either side of the sewage inlet 110 at a horizontal level. The water-air mixture entering from the sewage inlet 110 flows in a direction intersecting the distribution direction of the two air outlets 160. Guided by the airflow channel 101, it circulates horizontally at the same or adjacent horizontal level before flowing out of the box 100 from the air outlets 160. This not only increases the flow path and time but also effectively reduces the flow speed or causes the water-air mixture to collide with the walls multiple times during the flow, thereby promoting water-air separation and improving the degree of sewage precipitation. Without loss of generality, the air outlets 160 and the sewage inlet 110 can be arranged parallel to the first side wall 151 or on the top wall of the box 100.

[0072] Further, in this embodiment, referring to Figures 9 and 11, the air guide 200 is located below the corresponding air outlet 160 and is positioned adjacent to and abuts against the air outlet 160 near the air guide channel 101. It can be understood that the air outlet 160 and the corresponding air guide 200 are distributed vertically, and the air guide 200 can intercept the water-air mixture in the horizontal direction to prevent the water-air mixture from directly changing direction and flowing to the air outlet 160 from the position of the first sidewall 151. Instead, it guides the water-air mixture to first flow to the end of the horizontal side of the air guide 200 or the lower part of the air guide 200 before changing direction and bypassing the air guide 200, thereby extending the flow path and time of the water-air mixture, which is beneficial for water-air separation. Simultaneously, the air guide 200's proximity to the air outlet 160 increases the air passage area of ​​the air guide channel 101, slowing down the flow rate of the water-air mixture sent into the box 100 by the sewage inlet 110, thereby promoting water-air separation. Of course, in other embodiments, the air outlet 160 can be located at the lower part of the air guide 200, and the two air guides 200 are located on the horizontal sides of the sewage inlet 110. The air guide 200 and the corresponding first sidewall 151 form an air guide channel 101, and then flow out from the air outlet 160 after changing direction downward to below the air outlet 160, thereby extending the flow path and time and improving the water-air separation effect.

[0073] In one embodiment, referring to Figures 9 to 12, the air guide 200 has gaps on its side away from the inlet 110 in the horizontal direction and on the vertical sidewall of the box 100, for connecting to the airflow channel 101. It can be understood that these gaps are located away from the inlet 110 and the outlet 160. Under the blocking and guiding effect of the air guide 200, the airflow smoothly changes direction in the horizontal direction and flows back to the outlet 160, making the airflow path smoother and avoiding obstruction and turbulence during the reversal process. Simultaneously, it helps the water-air mixture to be more fully separated during flow. Since most of the water-air mixture is mainly guided to flow horizontally, the impact of the airflow on the sewage surface is reduced, ensuring the stability of the sewage in the sewage box, which helps increase the effective volume for sewage storage within the box 100 and prevents sewage from flowing out of the outlet 160 with the airflow. Without loss of generality, in the horizontal plane along a distribution direction perpendicular to the inlet 110 and the first sidewall 151, the ratio of the length occupied by the air guide in this direction to the distance between the inlet 110 and the vertical inner wall of the housing 100 is greater than 0.5 and less than 1. This ensures that most of the water-air mixture flows through this gap to bypass the air guide, and also ensures the isolation effect of the air guide on the water-air mixture, promoting water-air separation. Of course, in other embodiments, a protrusion may be provided on the inner wall of the housing 100 so that the above-mentioned gap is formed between the air guide and the protrusion.

[0074] In one embodiment, referring to Figures 9 and 10, in the horizontal direction, the side of the air guide 200 near the inlet 110 abuts against the periphery of the inlet 110. This tight contact between the air guide 200 and the periphery of the inlet 110 effectively reduces leakage of the water-air mixture from gaps, ensuring that the water-air mixture flows along the air guide channel 101. This avoids leakage at the inlet 110, which would affect the degree of water-air separation and guarantee the cleaning effect. Simultaneously, the air guide 200 also ensures that the water-air mixture can smoothly enter and flow along the air guide channel 101, reducing crossflow and noise.

[0075] Regarding the relative positional relationship between the air outlet 160 and the sewage inlet 110, in one embodiment, referring to Figures 9 and 12, in the air inlet direction of the sewage inlet 110, the housing 100 includes a second sidewall 152 where the sewage inlet 110 is located, and the air outlet 160 is located close to the second sidewall 152. It can be understood that the water-air mixture flowing into the sewage inlet 110 flows along the air guide 200 within the air guide channel 101, and after a horizontal reversal, bypasses the air guide 200 and flows out from the air outlet 160. With the air inlet direction of the housing 100 at the sewage inlet 110 as a reference, the distance between the air outlet 160 and the first sidewall 151 is set to be greater than or equal to the distance between the sewage inlet 110 and the second sidewall 152, thus extending the flow path of the water-air mixture, thereby promoting water-air separation and ensuring cleaning effect. Of course, in other embodiments, the distance between the inlet 110 and the first sidewall 151 can also be greater than the distance between the outlet 160 and the second sidewall 152. By extending the length of the air guide channel 101 formed by the air guide 200 and the first sidewall 151, the flow path and residence time of the water-air mixture are extended, thereby promoting water-air separation.

[0076] In one embodiment, referring to Figures 9, 10, and 11, the wastewater box also includes a baffle plate 300, which is horizontally positioned below the wastewater inlet 110. The baffle plate 300 effectively blocks airflow from directly impacting the wastewater surface, reducing disturbance and helping to maintain a relatively stable state of the wastewater, preventing excessive foam and vortex formation. Simultaneously, when airflow impacts the wastewater surface, it may cause wastewater to splash out; the baffle plate 300 blocks this splashing, preventing it from flowing out of the air outlet 160 and ensuring a cleanliness level. It should be noted that the baffle plate 300 not only blocks airflow from directly impacting the wastewater surface but also guides the flow direction of the water-air mixture. By rationally designing the shape and position of the baffle plate 300, a more reasonable flow path can be formed within the wastewater box, thereby improving the water-air separation effect.

[0077] Regarding the placement of the baffle plate 300, in this embodiment, referring to Figures 9 to 11, the baffle plate 300 abuts against the lower side of the sewage inlet 110. The tight contact between the baffle plate 300 and the periphery of the sewage inlet 110 effectively reduces leakage of the water-air mixture from gaps, ensuring that the water-air mixture flows along the airflow channel 101. This avoids leakage at the sewage inlet 110, which would affect the degree of water-air separation and guarantee the cleaning effect. Simultaneously, the baffle plate 300 also ensures that the water-air mixture can smoothly enter and flow along the airflow channel 101, reducing crossflow and noise.

[0078] In one embodiment, referring to Figures 9 to 12, the air guide 200 abuts against the water baffle 300 on the side facing the first sidewall 151, or has a gap to communicate with the corresponding airflow channel 101. In one case, the water baffle 300 and the air guide 200 abut against each other in the horizontal direction. In the vertical direction between the air outlet 160 and the water baffle 300, the air guide 200 blocks the airflow. Here, the airflow can only flow towards the air outlet 160 after passing under the water baffle 300, or flow towards the air outlet 160 after passing around the horizontal side of the air guide 200 away from the sewage inlet 110, thereby extending the airflow path and promoting water-air separation. In another case, the water baffle 300 and the air guide 200 have a gap in the horizontal direction, wherein the size of the gap is not large enough to allow... Instead of unobstructed airflow, the gap formed by the natural proximity of the baffle plate 300 and the air guide 200 allows most of the airflow to flow around the horizontal side of the air guide 200 away from the sewage inlet 110 towards the air outlet 160, or around the bottom of the baffle plate 300 before flowing towards the air outlet 160. A small portion of the airflow will directly bypass the air guide 200 along the gap between the baffle plate 300 and the air guide 200 before flowing towards the air outlet 160. This weakens the airflow flowing below the baffle plate 300, reducing the impact on the sewage surface and decreasing the probability of sewage overflowing from the air outlet 160. Furthermore, for the airflow flowing around the bottom of the baffle plate 300 towards the air outlet 160, the lower edge of the air guide 200 will block this portion of the airflow, reducing the amount of water carried by the airflow into the air outlet 160, promoting water-air separation, and improving washing efficiency.

[0079] Regarding the flow process of the water-air mixture bypassing the baffle plate 300, in one embodiment, referring to Figures 11 and 12, the first sidewall 151 and the baffle plate 300 have a gap to connect to the airflow channel 101. It can be understood that the water-air mixture in the airflow channel 101 can flow from the gap between the first sidewall 151 and the baffle plate 300 to the lower part of the baffle plate 300. When the water-air mixture reaches the bottom of the baffle plate 300, due to gravity, heavier water molecules are more likely to settle at the bottom, while lighter gaseous components are more likely to rise, further promoting the separation of water and gas, making it more difficult for wastewater to directly pass through and flow to the air outlet 160. Simultaneously, the gap between the first sidewall 151 and the baffle plate 300 effectively guides the flow of the water-air mixture within the housing 100, preventing disordered gas flow inside the housing 100, thereby improving overall airflow efficiency and purification effect. Of course, in other embodiments, an air vent can also be provided on the baffle plate 300 to guide the airflow from the airflow channel 101 toward the lower part of the baffle plate 300.

[0080] In one embodiment, referring to Figures 11 and 12, the air guide 200 is inclined from the sewage inlet 110 toward the first sidewall 151, and the corner of the baffle plate 300 is provided with a clearance bevel (not shown), which abuts against the corresponding air guide 200 in parallel. First, when the water-air mixture enters the housing 100 from the sewage inlet 110, the gaseous component is guided upwards to the air outlet 160 by the gap between the baffle plate 300 and the second sidewall 152. This helps to achieve initial separation of gas and liquid, as gas is more easily buoyed and rises, while sewage tends to flow downwards or horizontally. It is understood that the side of the baffle plate 300 facing the second sidewall 152 does not protrude beyond the air guide 200. During the flow of water and air, water droplets on the bottom wall of the baffle plate 300 slide to the avoidance slope and are pulled by the tension of the air guide 200, making them less likely to splash to the air outlet 160 with the airflow, thereby preventing water from exiting the air outlet 160 and ensuring the water-air separation effect of the sewage box. Of course, in other embodiments, an air outlet can also be provided at the position of the baffle plate 300 near the second sidewall 152 to guide the airflow from the lower part of the baffle plate 300 to the air outlet 160.

[0081] In one embodiment, referring to Figures 9 to 11, the wastewater box further includes an air outlet 400. The air outlet 400 covers the top cover 140 of the box body 100 and forms an air outlet channel 401, which connects to the air outlet 160. The air outlet 400 concentrates the gas discharged from the wastewater box at the top of the box body 100. The air outlet channel 401 formed by the air outlet 400 effectively guides the airflow, reducing disordered diffusion and eddy currents at the top of the box body 100, thereby improving the overall efficiency of the cleaning equipment. Simultaneously, when the air outlet 160 is connected to a fan, the air outlet channel 401 provides a relatively narrow and direct passage, making it easier for the airflow to be drawn into the air outlet 160 under negative pressure, thus enhancing the adsorption effect of the air outlet 160 on the airflow. Furthermore, the air outlet 400 is mounted on the top cover 140, causing the air outlet 160 to be positioned horizontally. This helps to extend the flow time and path of the water-air mixture, promoting water-air separation. Without loss of generality, the arrangement of the air outlet 400 provides adjustment space for the relative positions of the fan and the air outlet 160, adapting to the height of the cleaning equipment or providing more options for the spatial layout of the cleaning equipment. Of course, in other embodiments, the air outlet 160 can also be directly opened on the top cover 140.

[0082] Further, in this embodiment, referring to Figures 9 and 11, the housing 100 is also provided with a flow guide 51. The flow guide 51 is disposed on the first side wall 151 and opposite to the sewage inlet 110. The flow guide 51 extends vertically and connects to the air outlet channel 401. It can be understood that the flow guide 51 can guide the airflow flowing into the housing 100 from the sewage inlet 110 to the two air outlet channels 401 to promote water-air separation. Without loss of generality, the baffle plate 300 abuts against the flow guide 51. It can be understood that the abutment between the baffle plate 300 and the flow guide 51 can guide the water-air mixture to flow along the air guide channel 101, ensuring the horizontal separation of the water-air mixture and its uniform distribution inside the sewage box, reducing turbulence in the water-air mixture during flow. Meanwhile, the baffle plate 300, the guide section 51, and the air guide component 200 work together to enhance the guiding effect of the airflow channel 101, which is beneficial for promoting the diversion of the water-air mixture. While reducing the unidirectional flow rate, it also promotes the separation of wastewater in the water-air mixture, thereby improving the water-air separation effect. Of course, in other embodiments, a branch of the airflow channel 101 can also be formed between the guide section 51 and the baffle plate 300 to continue to divert the water-air mixture, promote the residence time of the water-air mixture in the box 100, and thus improve the degree of water-air separation.

[0083] The top of the flow guide 51 has an air intake 121, and the air outlet 400 is provided with a guide edge 410. The guide edge 410 abuts against the top cover 140 and is opposite to the sewage inlet 110. The flow guide 51 is connected to the air outlet channel 401 through the air intake 121. Without loss of generality, the two air outlets 160 are located on the horizontal sides of the flow guide 51, and the air intake 121 is located at the top of the flow guide 51. The air intake 121 is connected to the blower through the channel of the flow guide 51 itself, and the flow guide 51 is connected to the air outlet channel 401 through the air intake 121. This is conducive to the airflow state in the air outlet channel 401 corresponding to the two air outlets 160 tending to be consistent, avoiding the formation of eddies on the sewage surface, and ensuring the stability of sewage in the box 100. Meanwhile, the guide edge 410 separates the outlet airflow channel 401 and the guide airflow channel 101, preventing the water-air mixture at the inlet 110 from interfering with the airflow in the outlet airflow channel 401, improving the flow path of the water-air mixture within the housing 100, and promoting water-air separation. Furthermore, by connecting two outlets 160 with one suction port 121, the outlet airflow channel 401 provides a better path for airflow, reducing congestion and eddies within the housing 100, allowing for smoother airflow and improving the airflow efficiency of the cleaning equipment. Of course, in other embodiments, two suction ports 121 can be provided corresponding to the two outlets 160 respectively, and the two suction ports 121 can be connected to different fans or the same fan outside the housing 100.

[0084] Specifically, in this embodiment, referring to Figures 9 and 10, the air outlet duct 401 includes two sub-ducts, which are respectively located on both sides of the guide section 51 and connected to the corresponding air outlets 160. The sub-ducts extend in the distribution direction of the inlet 110 and the first sidewall 151, and connect to the guide section 51 near the first sidewall 151. It can be understood that since the sub-ducts are on both sides of the guide section 51, i.e., the air inlet 121, the airflow received by each sub-duct is similar, so that the airflow drawn in from the inlet 110 is evenly distributed to the two sub-ducts. This helps to avoid the problem of excessive concentration of airflow on one side, resulting in insufficient airflow on the other side, and ensures that the airflow intensity output by the two air outlets 160 is consistent, thereby avoiding the phenomenon of vortices in the housing 100. Meanwhile, the sub-channel extends along the distribution direction of the inlet 110 and the first sidewall 151, and connects to the suction port 121 near the first sidewall 151. This increases the channel area of ​​the sub-channel, reduces the suction at the outlet 160, and concentrates the suction at the location connected to the sub-channel near the suction port 121, ensuring stable airflow and promoting water-air separation. Of course, in other embodiments, the sub-channels can also be connected in parallel to the suction port 121 with the same cross-section.

[0085] Regarding the placement of the blower, in one embodiment, referring to Figures 9, 11, and 13, the guide section 51 is adapted to the outer wall of the blower for mounting the blower outside the housing 100, and the blower's air inlet is connected to the suction port 121. By placing the blower externally, the internal space of the housing 100 can be utilized more effectively to accommodate wastewater. Furthermore, the guide section 51's adaptation to the outer wall of the blower helps reduce the overall size and footprint of the equipment, making it more suitable for use in spaces with limited space. Simultaneously, the connection between the blower's air inlet and the suction port 121 shortens the air transmission path, ensuring the flow efficiency of the water-air mixture and promoting the cleaning effect of the cleaning equipment. Of course, in other embodiments, the blower can also be placed at a position spaced apart from the wastewater box, with the blower's air inlet connected to the suction port 121 via a pipeline.

[0086] In one embodiment, referring to Figures 8 and 9, the guide section 51 is provided with an arc-shaped protrusion from the first sidewall 151, and the air intake direction of the sewage inlet 110 is parallel to the radial direction of the guide section 51. It can be understood that the distribution direction of the sewage inlet 110 and the guide section 51 is a symmetrical axis, and the guide section 51 is symmetrically arranged. The water-air mixture flowing into the sewage inlet 110 can be evenly divided into two horizontal sides under the action of the guide section 51, ensuring that the airflow in the two air outlets on both horizontal sides of the sewage inlet 110 tends to be consistent, and avoiding the formation of eddies on the sewage surface. Meanwhile, the guide section 51 protrudes from the first sidewall 151 in an arc shape. The sidewalls of the guide section 51 on both horizontal sides are configured as flow guide walls to direct the airflow of the air guide channel 101 toward the corresponding air outlet 160. If the guide section 51 is configured as a semi-cylindrical shape, the airflow enters the sewage inlet 110 in a direction parallel to the radial direction of the guide section 51. This allows for a smoother transition into the interior of the guide section 51 without generating excessive eddies or turbulence, thus improving the stability and efficiency of the airflow. Of course, in other embodiments, the guide section 51 can also be configured as a triangular prism, with the cone angle pointing in the direction of airflow into the sewage inlet 110.

[0087] In one embodiment, referring to Figures 8 and 9, the sewage inlet 110 is located at the horizontal center of the side wall of the housing 100. With the distribution direction of the sewage inlet 110 and the first side wall 151 as the axis of symmetry, two air outlets 160, two air guides 200, or two air outlets 160 and two air guides 200 are symmetrically arranged around the axis of symmetry. It should be noted that if the airflow path within the housing 100 is asymmetrical, vortices may form, increasing flow resistance, reducing efficiency, and potentially causing vibration and noise. In this embodiment, the airflow or liquid flow on both sides is symmetrical, canceling out any possible rotational forces. This ensures a more uniform and smooth flow path for the fluid within the housing 100, effectively preventing the formation of vortices. Simultaneously, by symmetrically arranging the air outlets 160 and air guides 200, the adverse effects of vortices can be eliminated, enhancing the stability of the housing 100 and ensuring the stability of the sewage box within the cleaning equipment. This ensures the stability of the sewage surface, reducing the probability of sewage seeping out of the air outlet 160 and minimizing the interference of the sewage box on the operation of the cleaning equipment. Of course, in other embodiments, the specifications of the air outlet 160 and the air guide 200 on both sides of the sewage inlet 110 can be allocated according to the arrangement of the blower to match the suction power of the blower.

[0088] In one embodiment, referring to Figures 8 and 9, the housing 100 includes a base 130 and a top cover 140. The top cover 140 has a downwardly bent mounting edge 141, which is opposite to the first side wall 151. A wastewater inlet 110 is disposed on the mounting edge 141. The wastewater inlet 110 is located on the mounting edge 141, allowing airflow to flow more smoothly horizontally when entering the housing 100, rather than vertically impacting the wastewater surface inside the housing 100. This arrangement is adapted to the horizontal distribution of the air outlet 160 and the first side wall 151 within the housing 100, enabling the water-air mixture to flow as horizontally as possible within the housing 100, thereby reducing the vertical space occupied and increasing the effective volume of the wastewater tank. Simultaneously, the suction nozzle connected to the wastewater inlet 110 extends relatively horizontally to the ground, reducing the space occupied above the wastewater tank and facilitating cleaning operations in relatively low-altitude environments. Of course, in other embodiments, the inlet 110 may also be located on the side wall of the top cover 140 relative to the base 130.

[0089] Further, in this embodiment, referring to Figures 8 and 9, the mounting edge 141 is horizontally recessed inward to form a mounting groove 142. A cover (not shown) is disposed on the side of the mounting groove 142 facing the top wall of the top cover 140. The cover is flush with the top wall of the housing 100. The sewage inlet 110 is disposed on the bottom wall of the mounting groove 142. The mounting groove 142 provides a stable and clear connection position for the suction nozzle, allowing the nozzle to be easily inserted into the mounting groove 142 and tightly connected with the sewage inlet 110, ensuring smooth airflow transmission. No complex alignment or adjustment is required; simply insert the nozzle into the sewage inlet 110 in the mounting groove 142. Simultaneously, the sewage inlet 110 being within the recessed mounting groove 142 makes the connection between the nozzle and the sewage box more compact, reducing the overall size and footprint of the cleaning equipment, making it more suitable for use in spaces with limited space. Additionally, a cover is provided on the mounting groove 142 facing the top wall of the box 100. The cover is flush with the top wall of the box 100. When viewed from above, the cover prevents the connection between the sewage inlet 110 and the suction nozzle from being exposed, thus preventing external contaminants from entering the sewage box and ensuring the integrity and aesthetics of the sewage box. Of course, in other embodiments, the mounting edge 141 can also be set flat, with the sewage inlet 110 located on the mounting edge 141.

[0090] Regarding the connection method between the top cover 140 and the base 130, in one embodiment, referring to Figures 8 and 9, the top cover 140 is detachably, rotatably, or rotatably and detachably mounted on the base 130. It is understood that the detachable or rotatable top cover 140 allows the user to easily open the box 100 for cleaning, inspection, or maintenance, helping to maintain the cleanliness and performance of the box 100 and extend its service life. It also facilitates the installation of components such as the air guide 200 and the water-blocking plate 300 in the base 130. Without loss of generality, the edge of the top cover 140 is provided with a flap. When the top cover 140 is mounted on the base 130, the flap engages with the base 130, thereby ensuring the sealing of the contact area between the top cover 140 and the base 130, thus ensuring the airflow within the wastewater box and the suction force for adsorbing wastewater. Of course, in other embodiments, the box 100 can also be fused into a single piece after the internal components are installed.

[0091] This application also proposes a cleaning device, as shown in Figure 13. This cleaning device includes a wastewater box, the specific structure of which is described in the above embodiments. Since this cleaning device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The wastewater inlet 110 of the wastewater box is connected to a suction nozzle, used to absorb wastewater from the surface to be cleaned, thereby achieving water washing of the surface.

[0092] In one embodiment, referring to Figure 13, the cleaning device is configured as an automatic water-washing cleaning robot. The wastewater tank has a large effective volume, improving the cleaning device's battery life. Furthermore, the wastewater tank can be configured to be relatively low, allowing the automatic water-washing cleaning robot to automatically clean areas with limited height, such as under beds, TV cabinets, and chairs, thus improving the user experience. Without loss of generality, the cleaning device in this embodiment is used for cleaning carpets, but it can also be used for water-washing floor tiles and ordinary floors, or simply for absorbing and cleaning water stains on the floor. In other embodiments, the cleaning device can also be configured as a manual or semi-manual cleaning machine, utilizing the large effective volume of the wastewater tank to reduce the number or frequency of cleaning the wastewater tank.

[0093] The above description is merely an exemplary embodiment of this application and does not limit the scope of protection of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A sewage box, wherein, The wastewater box includes: The box body has a sewage inlet and at least two air outlets horizontally distributed along a first direction. The sewage inlet is located between the two air outlets. The opening directions of the air outlets and the sewage inlet are opposite to each other, and the air outlets and the sewage inlet are isolated from each other in the first direction. An air guide is disposed inside the box and located below the air outlet. In the flow path from the sewage inlet to the air outlet, the air guide includes a first baffle and a second baffle that are spaced apart in sequence. The lower side of the first baffle is lower than the lower side of the second baffle.

2. The wastewater box as described in claim 1, wherein, In the direction in which the two second baffles approach each other, the lower sides of the two second baffles are inclined from top to bottom.

3. The wastewater box as described in claim 1, wherein, The sewage inlet and the air outlet are located at the top of the box.

4. The wastewater box as described in claim 3, wherein, The wastewater box includes an air outlet, which is installed on the inner wall of the top cover of the box body. The air outlet and the top cover enclose each other to form an air outlet channel, and at one end, they enclose each other to form an air outlet. The air guide is located on the lower side of the air outlet. The box body is provided with an air intake, and the air outlet channel is connected to the air intake.

5. The wastewater box as described in claim 4, wherein, The air outlet channel includes two sub-channels, which are symmetrically distributed around the straight line where the air intake and the sewage inlet are located, and are respectively connected to the corresponding air outlet. The ends of the two sub-channels away from the corresponding air outlets intersect and are connected to the air intake.

6. The wastewater box as described in claim 4, wherein, The air outlet is provided with a foam baffle. The box body includes a second sidewall with the sewage inlet. The second sidewall is opposite to the air outlet and has a gap. The foam baffle is horizontally arranged and is correspondingly arranged below the gap between the second sidewall and the air outlet. The foam baffle and the air guide have an air passage gap.

7. The wastewater box as described in claim 4, wherein, The box body includes a first sidewall disposed opposite to the sewage inlet. The first sidewall is provided with an exhaust pipe extending vertically. The exhaust pipe is opposite to the sewage inlet. The air intake is opened at the top of the exhaust pipe. The air outlet is provided with a clearance opening. The clearance opening is sealed against the top periphery of the exhaust pipe.

8. The wastewater box as claimed in claim 1, wherein, The wastewater box also includes a water-separating plate disposed inside the box body. The water-separating plate is horizontally disposed and has a vertical distance from the top cover of the box body. The wastewater inlet is disposed between the top cover of the box body and the water-separating plate.

9. The wastewater box as described in claim 8, wherein, The periphery of the water-proof plate is spaced from the inner wall of the box. A third baffle is provided on the side of the water-proof plate near the air outlet. The third baffle is located on the side of the air guide away from the air outlet and extends vertically downward from the edge of the water-proof plate.

10. The wastewater box as claimed in claim 8, wherein, The baffle plate has a diversion hole in the middle of the first direction, and the diversion hole is located in the air inlet direction of the sewage inlet; And / or, the water-blocking plate is detachably installed inside the box.

11. The wastewater box as claimed in any one of claims 1 to 10, wherein, The box body includes a base and a top cover. The top cover has a downwardly bent mounting edge, and the sewage inlet is disposed on the mounting edge. The top cover and the base are closably connected.

12. The wastewater box as claimed in any one of claims 1 to 10, wherein, The bottom of the box is provided with a sewage outlet, and the sewage box is provided with a movable sewage door corresponding to the sewage outlet. The sewage door has a closed state where the sewage outlet is closed and an open state where the sewage outlet is open.

13. A sewage box, wherein, The wastewater box includes: The box body has a sewage inlet and at least two air outlets, with the two air outlets located on opposite horizontal sides of the sewage inlet. The box body also has a first sidewall in the direction of airflow from the sewage inlet. Two air guides are disposed inside the housing. The two air guides are located on the horizontal sides of the sewage inlet and connected to the periphery of the sewage inlet. The first sidewall and the air guides form an airflow channel. The air outlet is located on the side of the air guide away from the first sidewall and is connected to the corresponding airflow channel.

14. The wastewater box as claimed in claim 13, wherein, The air outlet and the sewage inlet are located at the top of the box.

15. The wastewater box as claimed in claim 14, wherein, The air guide is located below the corresponding air outlet and is positioned adjacent to and abuts against the air outlet near the air guide channel.

16. The wastewater box as claimed in claim 13, wherein, The air guide has gaps on the side of the air guide away from the sewage inlet in the horizontal direction and on the vertical side wall of the box body, so as to connect with the air guide channel; And / or, in the air inlet direction of the sewage inlet, the housing includes a second sidewall on which the sewage inlet is disposed, and the air outlet is disposed close to the second sidewall.

17. The wastewater box as claimed in claim 13, wherein, The wastewater box also includes a baffle plate, which is horizontally arranged and located below the wastewater inlet.

18. The wastewater box as claimed in claim 17, wherein, The baffle plate abuts against the lower side of the sewage inlet; And / or, the air guide member abuts against the water baffle plate on the side facing the first sidewall, or has a gap to communicate with the corresponding air guide channel.

19. The wastewater box as claimed in claim 17, wherein, The first sidewall and the water-blocking plate have a gap for communicating with the airflow channel; And / or, the air guide is inclined from the sewage inlet toward the first side wall, and the corner of the baffle plate is provided with a clearance bevel, the clearance bevel and the corresponding air guide are parallel and abut against each other.

20. The wastewater box as claimed in claim 13, wherein, The wastewater box also includes an air outlet, which is placed on the top cover of the box and forms an air outlet channel, which is connected to the air outlet.

21. The wastewater box as claimed in claim 20, wherein, The box body is also provided with a flow guide, which is disposed on the first side wall and opposite to the sewage inlet. The flow guide extends vertically and is connected to the air outlet channel.

22. The wastewater box as claimed in claim 21, wherein, The top of the flow guide is formed with an air inlet, and the air outlet is provided with a guide edge. The guide edge abuts against the top cover and is opposite to the sewage inlet. The flow guide is connected to the air outlet channel through the air inlet. And / or, the air outlet duct includes two sub-ducts, which are respectively disposed on the horizontal sides of the guide section and respectively connected to the corresponding air outlet. The sub-ducts extend in the distribution direction of the sewage inlet and the first sidewall and are connected to the guide section at a position adjacent to the first sidewall.

23. The wastewater box as claimed in claim 21, wherein, The flow guide is provided in an arc shape protruding from the first sidewall, and the air intake direction of the sewage inlet is parallel to the radial direction of the flow guide.

24. The wastewater box as claimed in any one of claims 13 to 23, wherein, The inlet is located at the horizontal center of the side wall of the box body. With the distribution direction of the inlet and the first side wall as the axis of symmetry, the two outlets and / or the two air guides are symmetrically arranged around the axis of symmetry.

25. The wastewater box as claimed in any one of claims 13 to 23, wherein, The box body includes a base and a top cover. The top cover has a downwardly bent mounting edge that is opposite to the first side wall. The sewage inlet is located on the mounting edge.

26. The wastewater box as claimed in claim 25, wherein, The mounting edge is horizontally recessed inward to form a mounting groove. A shielding cover is provided on the side of the mounting groove facing the top wall of the top cover. The shielding cover is flush with the top wall of the box body. The sewage inlet is located on the bottom wall of the mounting groove. And / or, the top cover is detachably and / or rotatably mounted on the base.

27. A cleaning device, wherein, The cleaning device includes a main unit and a wastewater box as described in any one of claims 1 to 26, the wastewater box being installed on the main unit.

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