Sewage tank and cleaning equipment

Abstract

The utility model provides a sewage tank and cleaning equipment, and the sewage tank comprises a water tank main body which is provided with a sewage suction port and a liquid storage tank communicated with the sewage suction port; the cover body assembly covers the water tank main body and is matched with the liquid storage tank to form a liquid storage cavity; the cover body assembly is provided with an air outlet and an air duct; the air duct is arranged in the cover body assembly, and the air outlet is communicated with the liquid storage cavity through the air duct; the air channel and the liquid storage cavity are adjacently arranged in the height direction of the water tank body. According to the sewage tank, the risk that dirt enters the first suction assembly or is discharged to the outside is reduced, the cleaning effect is improved, and the service life of the first suction assembly is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cleaning, especially to a sewage tank and cleaning equipment. BACKGROUND

[0002] The current sewage tank, such as a water suction type sewage tank, can suck up sewage on the ground, carpet, cloth and other places through a suction fan. After the sewage enters the sewage tank, it will be stored in the sewage tank, and the airflow will pass through the sewage tank into the fan and finally flow to the outside from the exhaust port of the cleaning equipment.

[0003] However, the current sewage tank is prone to have sewage enter the suction fan and be discharged to the outside, thereby affecting the service life and cleaning effect of the suction fan. SUMMARY

[0004] The present application provides a sewage tank and cleaning equipment, aiming to solve the problem that the current sewage tank is prone to have sewage enter the suction fan and be discharged to the outside, thereby affecting the service life and cleaning effect of the suction fan.

[0005] To solve the above technical problems, the present application adopts one technical scheme: providing a sewage tank, which comprises: a water tank body provided with a sewage suction port and a liquid storage tank communicating with the sewage suction port; a cover assembly covered on the water tank body and cooperating with the liquid storage tank to form a liquid storage cavity; and the cover assembly is provided with an air outlet and an air duct, the air duct is arranged inside the cover assembly; the air outlet communicates with the liquid storage cavity through the air duct; wherein the air duct and the liquid storage cavity are arranged adjacent to each other along the height direction of the water tank body.

[0006] In an embodiment of the present application, the cover assembly comprises:

[0007] a first cover body covered on the water tank body and cooperating with the liquid storage tank to form the liquid storage cavity; and the first cover body is provided with a communication hole communicating with the liquid storage cavity;

[0008] a second cover body covered on the side of the first cover body away from the water tank body and cooperating with the first cover body to form the air duct; and the air outlet is arranged on the second cover body.

[0009] In an embodiment of the present application, further comprising:

[0010] a gas-liquid separator at least partially arranged in the air duct and communicating with the air outlet, and configured to perform gas-liquid separation on the airflow entering the gas-liquid separator.

[0011] In an embodiment of the present application, the first cover is provided with a flow guide groove on the side surface away from the water tank body; one end of the flow guide groove extends to communicate with the gas-liquid separator; the other end of the flow guide groove extends to the communication hole and communicates with the liquid storage cavity through the communication hole, so as to be configured to make the liquid separated by the gas-liquid separator flow back to the liquid storage cavity through the flow guide groove.

[0012] In an embodiment of the present application, the first cover is further provided with a containing groove on the side surface away from the water tank body; one end of the flow guide groove extends to communicate with the containing groove;

[0013] The second cover covers the containing groove and cooperates with the containing groove to form a limiting cavity; the gas-liquid separator is provided with a separation part, which is arranged in the limiting cavity and is configured to separate the liquid carried in the gas flow into the limiting cavity.

[0014] In an embodiment of the present application, the liquid storage groove includes a first groove body and a second groove body, the first groove body and / or the second groove body extend along the length direction of the water tank body; the first end of the first groove body directly communicates with the sewage suction port, the second end of the first groove body directly communicates with the third end of the second groove body; the orthographic projection of the communication hole on the water tank body is located at the fourth end of the second groove body opposite to the third end.

[0015] In an embodiment of the present application, the first groove body and the second groove body both extend along the length direction of the water tank body; and the first groove body and the second groove body are oppositely arranged along the width direction of the water tank body.

[0016] In an embodiment of the present application, the second cover is further provided with a sewage outlet; the second cover has opposite first and second end portions along the length direction thereof; the sewage outlet is arranged at a position of the first end portion away from the second end portion; the air outlet is arranged at a position of the second end portion away from the first end portion;

[0017] The sewage tank further includes a sewage suction pipe, which is arranged on one side of the liquid storage cavity along the length direction of the water tank body, and one end of the sewage suction pipe communicates with the fourth end of the second groove body; the other end of the sewage suction pipe is configured to communicate with the second suction assembly to suck out the sewage in the liquid storage cavity.

[0018] In an embodiment of the present application, the water tank body further comprises a water guide well, a bottom of the water guide well being directly communicated with the fourth end of the second groove body; one end of the sewage suction pipe is connected with a well mouth of the water guide well, the other end of the sewage suction pipe passes through the first cover body and is connected with the second cover body and communicated with the sewage outlet; the sewage suction pipe and / or the sewage outlet are configured to be directly connected with the second suction assembly.

[0019] In an embodiment of the present application, detachable connection is adopted between the first cover body and the water tank body, between the second cover body and the first cover body and / or between the second cover body and the water tank body.

[0020] To solve the above technical problems, an embodiment of the present application provides a cleaning device, which comprises the sewage tank and a first suction assembly, the first suction assembly being communicated with an air outlet of the sewage tank and being configured to form a negative pressure at a sewage suction port of the sewage tank through an air duct of the sewage tank.

[0021] The sewage tank provided by the embodiment of the present application has the following beneficial effects and advantages over the prior art: the air duct is arranged in the inside of the cover assembly and is communicated with the liquid storage cavity through the cover body, and the air duct and the liquid storage cavity are arranged adjacent to each other along the height direction of the water tank body; on the one hand, since the air duct is arranged at a higher position relative to the liquid storage cavity along the height direction of the sewage tank, garbage and a large amount of sewage and other pollutants entering the liquid storage cavity cannot directly flow into the first suction assembly, thereby playing a role of isolating the pollutants; on the other hand, the air duct is additionally arranged to prolong the path of the pollutants from the liquid storage cavity to the first suction assembly, which is more conducive to realizing water vapor separation of the pollutants before the pollutants reach the first suction assembly, so that the pollutants entering the first suction assembly have a smaller water content, the risk of the pollutants being discharged to the outside along with the airflow is reduced, and the cleaning effect and the service life of the first suction assembly are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the sewage tank provided by an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a disassembly schematic diagram of the sewage tank shown in FIG. 1; Figure 1

[0024] Figure 3 FIG. 3 is an A-A cross-sectional view of the sewage tank shown in FIG. 1; Figure 1

[0025] Figure 4 FIG. 4 is a B-B cross-sectional view of the sewage tank shown in FIG. 1; Figure 1

[0026] Figure 5 FIG. 5 is a C-C cross-sectional view of the sewage tank shown in FIG. 1.​​​Figure 1 Structure diagram of the sewage tank after removing the second cover body is shown;

[0027] Figure 6 The overall structure diagram of the water tank body provided by an embodiment of the present application is shown.

[0028] Explanation of reference signs

[0029] 1 - water tank body; 11 - sewage suction port; 12 - liquid storage groove; 121 - first groove body; 122 - second groove body; 13 - water guide well; 2 - cover body assembly; 21 - first cover body; 211 - air flow groove; 212 - flow guide groove; 213 - accommodating groove; 214 - communication hole; 22 - second cover body; 221 - air outlet; 222 - sewage outlet; 23 - air duct; 4 - gas-liquid separator; 41 - containing cavity; 42 - liquid passage hole; 43 - air flow hole; 5 - sewage suction pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0032] Reference to an "embodiment" in this document means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0033] In the related art, when a cleaning device such as a scrubber is used to suck up the sewage formed after cleaning the ground, the suction fan forms a negative pressure at the sewage suction port by providing suction, thereby recycling the sewage to the sewage tank. When the sewage mixed with water and gas is sucked into the sewage tank, the water flow will follow the air flow into the suction fan and be discharged to the outside along with the air flow, thereby affecting the service life of the suction fan and the cleaning effect.

[0034] To this end, the embodiments of the application provide a sewage tank and a cleaning device, which can reduce the risk of sewage in the sewage tank being discharged to the outside along with the air flow, thereby improving the cleaning effect and the service life of the first suction assembly.

[0035] The application will be described in detail below with reference to the drawings and embodiments.

[0036] In this embodiment, a cleaning device is provided, which can be a scrubber. For ease of understanding, the application is introduced by taking this as an example. The cleaning device comprises a sewage tank and a first suction assembly.

[0037] Please refer to Figures 1 to 3 , Figure 1 the overall structure schematic diagram of the sewage tank provided by an embodiment of the application; Figure 2 is Figure 1 the exploded schematic diagram of the sewage tank shown in FIG. 1; Figure 3 is Figure 1 the A-A sectional view of the sewage tank shown in FIG. 1. The sewage tank comprises a water tank body 1 and a cover assembly 2.

[0038] The water tank body 1 is provided with a sewage suction port 11 and a liquid storage groove 12. The cover assembly 2 is arranged on the water tank body 1 and cooperates with the liquid storage groove 12 to form a liquid storage cavity. The sewage can enter the liquid storage cavity through the sewage suction port 11. The liquid storage cavity is configured to store the sewage. The sewage can include liquid and / or solid, the liquid can be water poured or spilled on the ground, or sewage generated when the cleaning device is wet mopped, and the liquid is collectively referred to as sewage. The solid includes dust particles, hair, and lint, etc.

[0039] The water tank body 1 can be a one-piece thermoplastic molded structure or can be assembled by multiple components. Preferably, the water tank body 1 is a one-piece thermoplastic molded structure; compared with the solution of being assembled by multiple components, the problem of sewage leaking out of the water tank body 1 through the gaps between the components can be avoided.

[0040] The cover assembly 2 is provided with an air outlet 221 and an air duct 23. The air duct 23 is arranged inside the cover assembly 2, and at least part of the air duct 23 extends in a first direction; the first direction intersects the height direction Z of the water tank body 1. The extension direction of the air duct 23 refers to the extension direction of the central axis of the air duct 23. The first direction can be perpendicular to the height direction Z of the water tank body 1. In an embodiment, the entire air duct 23 extends in the first direction. The first direction can be parallel to the length direction X of the cover assembly 2.

[0041] By extending at least part of the air duct 23 in the first direction, compared with the solution of extending the air duct 23 in the height direction Z of the water tank body 1, the longer air duct 23 can be added by using the length of the cover assembly 2 itself, without thickening the cover assembly 2, which is beneficial to the lightness and thinness of the cover assembly 2 and the sewage tank, and reduces the cost. At the same time, the air duct 23 extending in the X direction has a slower backflow speed of the airflow in the air duct 23, which is more conducive to the water vapor separation of the airflow in the air duct 23.

[0042] The air outlet 221 is in communication with the liquid storage cavity through the air duct 23. The air outlet 221 is configured to communicate with the first suction assembly, so that the first suction assembly forms a negative pressure at the sewage suction port 11 through the air duct 23, and external sewage can be sucked into the liquid storage cavity through the sewage suction port 11 under the negative pressure. The first suction assembly can be arranged outside the cover assembly 2, and the first suction assembly can be directly connected with the air outlet 221 or can be connected through an intermediate pipeline. The first suction assembly can be a fan.

[0043] The above scheme forms the air duct 23 in communication with the liquid storage cavity by the cover assembly 2 arranged on the water tank body 1, and the air duct 23 is arranged inside the cover assembly 1, the air outlet 221 is in communication with the liquid storage cavity through the air duct 23, and the air duct 23 and the liquid storage cavity are arranged adjacent to each other along the height direction Z of the water tank body 1; on the one hand, the air duct 23 is located at a higher position relative to the liquid storage cavity along the height direction Z of the sewage tank, and when the cover assembly 2 of the sewage tank is placed upward, under the influence of the height difference between the liquid storage cavity and the air duct 23, the garbage and a large amount of sewage and other pollutants entering the liquid storage cavity cannot directly flow into the first suction assembly, thereby playing a role of isolating the pollutants; on the other hand, the air duct 23 is additionally arranged between the liquid storage cavity and the first suction assembly along the airflow direction, thereby prolonging the path of the airflow from the liquid storage cavity to the first suction assembly, and more favorably realizing water vapor separation before the airflow reaches the first suction assembly, so that the airflow entering the first suction assembly has a smaller water content, thereby reducing the risk of the pollutants being discharged to the outside along with the airflow, and improving the cleaning effect and the service life of the first suction assembly.

[0044] In one embodiment, in combination with Figure 3 , the air duct 23 is arranged adjacent to the liquid storage cavity along the height direction Z of the water tank body 1. In one specific embodiment, all positions of the air duct 23 are located above the liquid storage cavity along the height direction Z of the water tank body 1. In this way, the cover assembly 2 does not occupy the volume of the liquid storage cavity, and a larger volume of the liquid storage cavity can be ensured to improve the capacity of the sewage tank. Meanwhile, when the cover assembly 2 of the sewage tank is placed upward, under the influence of the height difference between the liquid storage cavity and the air duct 23, the garbage and a large amount of sewage and other pollutants entering the liquid storage cavity cannot directly flow into the first suction assembly, thereby playing a role of isolating the pollutants.

[0045] Of course, in other embodiments, the port through which the air duct 23 is in communication with the liquid storage cavity can be located above the liquid storage cavity along the height direction Z of the water tank body 1, and other positions of the air duct 23 can be located above the liquid storage cavity along the height direction Z of the water tank body 1, can be arranged at the same layer as the liquid storage cavity, or can extend to the bottom of the liquid storage cavity to further prolong the path of the air duct 23 and more favorably realize water vapor separation. The present application does not limit this.

[0046] In one embodiment, in combination with Figure 2 and Figure 3 , the cover assembly 2 comprises a first cover 21 and a second cover 22; the first cover 21 is arranged on the water tank body 1 and cooperates with the liquid storage groove 12 to form the liquid storage cavity; and the first cover 21 is provided with a communication hole 214 in communication with the liquid storage cavity, and the communication hole 214 penetrates through the upper and lower surfaces of the first cover 21. The second cover 22 is arranged on the side of the first cover 21 away from the water tank body 1 and cooperates with the first cover 21 to form the air duct 23; and the air outlet 221 is specifically arranged on the second cover 22.

[0047] In one embodiment, the first cover 21 is provided with an air flow groove 211 on the side surface facing the second cover 22; the second cover 22 covers the air flow groove 211 and cooperates with the air flow groove 211 to form the air duct 23.

[0048] The connection between the first cover 21 and the water tank body 1, between the second cover 22 and the first cover 21, and / or between the second cover 22 and the water tank body 1 can be detachable connection.

[0049] With the detachable connection, when the liquid storage cavity and the air duct 23 need to be cleaned, the first cover 21, the second cover 22 and the water tank body 1 are separated, and the liquid storage cavity can be cleaned through the opening of the liquid storage groove 12, and the air duct 23 can be flushed through the opening of the air flow groove 211, so that the liquid storage cavity and the air duct 23 are more convenient to clean.

[0050] In one embodiment, the circumferential edge of the first cover 21 can be sleeved in the water tank body 1 and be interference fit with the water tank body 1. Further, the part of the first cover 21 corresponding to the groove wall of the liquid storage groove 12 can be provided with a first clamping groove; the groove wall of the liquid storage groove 12 is embedded in the first clamping groove to connect and fix the first cover 21, and to enhance the sealing of the liquid storage cavity and reduce the risk of dirt leaking out of the liquid storage cavity.

[0051] The circumferential edge of the second cover 22 can be provided with a second clamping groove, and the second clamping groove is arranged along the circumferential direction of the second cover 22. The circumferential side wall of the water tank body 1 is embedded in the second clamping groove to connect and fix the second cover 22, and to enhance the overall sealing of the sewage tank by clamping the side wall of the water tank body 1 with the second clamping groove, thereby reducing the risk of dirt in the water tank body 1 leaking to the outside.

[0052] In one embodiment, in combination with Figure 2 and Figure 3 The sewage tank further comprises a gas-liquid separator 4, at least part of the gas-liquid separator 4 is arranged in the air duct 23 and communicates with the air outlet 221, and is configured to perform gas-liquid separation on the air flow entering the gas-liquid separator 4. In this way, the gas-liquid separator 4 can be used to perform gas-liquid separation on the air flow entering the air duct 23, so as to further reduce the water content of the air flow reaching the first suction assembly, thereby reducing the risk of sewage being discharged to the outside with the air flow, and further improving the cleaning effect and the service life of the first suction assembly.

[0053] Referring to Figure 4 , Figure 4 for Figure 1A B-B sectional view of the sewage tank shown; the gas-liquid separator 4 is provided with a separation part, and the separation part is provided with a containing cavity 41, and a plurality of liquid passing holes 42 and air flow holes 43 are formed in the side wall of the containing cavity 41. The liquid passing holes 42 are in communication with the air duct 23, and the suction force generated by the first suction assembly when working makes the air flow entering the air duct 23 pass through the liquid passing holes 42 and enter the containing cavity 41. The gas-liquid separator 4 generates centrifugal force on the water-containing air flow entering the gas-liquid separator 4 during rotation, and the centrifugal force can throw the sewage with relatively large mass out of the containing cavity 41 through the liquid passing holes 42, thereby completing the gas-liquid separation. The gas in the containing cavity 41 flows out to the air outlet 221 through the air flow holes 43.

[0054] This scheme can reduce the risk of water vapor damaging the internal parts of the first suction assembly, and also reduce the risk of breeding bacteria due to the humid internal environment of the sewage tank, causing secondary pollution to the home environment.

[0055] In one embodiment, referring to Figure 5 , Figure 5 for Figure 1 The structural schematic diagram of the sewage tank shown after removing the second cover; the side surface of the first cover 21 away from the water tank main body 1 is provided with a flow guide groove 212; one end of the flow guide groove 212 extends to be in communication with the gas-liquid separator 4; the other end of the flow guide groove 212 extends to the communication hole 214 and is in communication with the liquid storage cavity through the communication hole 214, so as to be configured to make the liquid separated by the gas-liquid separator 4, such as sewage, flow back to the liquid storage cavity through the flow guide groove 212. That is, the liquid separated by the gas-liquid separator 4, such as sewage, can flow back to the liquid storage cavity through the flow guide groove 212 for storage.

[0056] In one embodiment, in order to facilitate the sewage to flow back to the liquid storage cavity, the bottom wall of the flow guide groove 212 can be inclinedly arranged from the gas-liquid separator 4 to the side of the water tank main body 1, so as to make the liquid flow back to the liquid storage cavity as much as possible under the action of its gravity, and reduce the residual liquid in the air duct 23.

[0057] In one embodiment, in combination with Figure 5 , the side surface of the first cover 21 away from the water tank main body 1 is further provided with a containing groove 213; one end of the flow guide groove 212 extends to be in communication with the containing groove 213. The second cover 22 covers the containing groove 213 and cooperates with the containing groove 213 to form a limiting cavity; part of the separation part of the gas-liquid separator 4 is arranged in the limiting cavity, and the liquid passing hole 42 is located in the limiting cavity and is configured to separate the liquid carried in the air flow into the limiting cavity. The liquid separated in the limiting cavity can flow back to the liquid storage cavity through the flow guide groove 212.

[0058] This scheme can limit the gas-liquid separator 4 through the limiting cavity, so as to reduce the risk of relative displacement between the gas-liquid separator 4 and the cover assembly 2 due to shaking during rotation.

[0059] In one embodiment, referring to Figure 6 , Figure 6 The overall structure schematic diagram of the water tank body provided by an embodiment of the present application is shown in FIG. 1. The liquid storage tank 12 includes a first tank body 121 and a second tank body 122, and the first tank body 121 and / or the second tank body 122 extend along the length direction X of the water tank body 1. The first tank body 121 has opposite first and second ends along its extension direction, and the second tank body 122 has opposite third and fourth ends along its extension direction. The first end of the first tank body 121 is directly communicated with the dirt suction port 11, the second end of the first tank body 121 is directly communicated with the third end of the second tank body 122, and the orthographic projection of the communication hole 214 on the water tank body 1 falls on the fourth end of the second tank body 122. It should be noted that the first and second ends of the first tank body 121 and the third and fourth ends of the second tank body 122 do not refer to the two side end faces of the corresponding tank body along its extension direction, but refer to a region close to the two side edges along its extension direction.

[0060] In this way, the liquid storage tank 12 can be in an intestinal mode, and the flow of dirt in the liquid storage tank 12 is smoother. Solid and liquid dirt is more easily separated from gas. During the dirt suction process, the dirt can be more smoothly sucked away, improving the dirt suction efficiency and reducing the residual dirt in the liquid storage tank 12. In addition, the liquid storage tank 12 includes two tank bodies, which can prolong the path of the dirt entering the water tank body 1, more conducive to dirt settlement, water vapor separation, and reduce the risk of liquid entering the first suction assembly, compared with the scheme in which the liquid storage tank 12 only includes the first tank body 121 or the second tank body 122. In addition, by making the orthographic projection of the communication hole 214 on the water tank body 1 fall on the fourth end of the second tank body 122, compared with the scheme in which the orthographic projection of the communication hole 214 on the water tank body 1 falls on other positions of the second tank body 122 or falls in the first tank body 121, the path of the airflow entering the first suction assembly can be as long as possible, so that the liquid carried in the airflow can be separated from the gas as much as possible during the flow process, thereby improving the service life and cleaning effect of the first suction assembly.

[0061] In one specific embodiment, in combination with Figure 6 The first tank body 121 and the second tank body 122 both extend along the length direction X of the water tank body 1, and the first tank body 121 and the second tank body 122 are oppositely arranged along the width direction Y of the water tank body 1.

[0062] In this way, compared with the scheme in which the two tank bodies are arranged side by side or in a right angle type, the volume of the water tank body 1 can be reduced, the structure is more compact, the space utilization rate is high, and the product miniaturization is beneficial.

[0063] In one embodiment, in combination with Figure 2 and Figure 3The first cover body 21 is recessed on one side surface of the water tank body 1, and the recess is arranged corresponding to the first groove body 121 and recessed in a direction away from the water tank body 1 to form a liquid inlet channel with the first groove body 121. In this way, when the part of the first groove body 121 close to the sewage suction port 11 has a small depth, the volume of the corresponding position of the liquid inlet channel can be increased through the recess, so that the sewage tank can suck a larger volume of sewage into the water tank body 1.

[0064] In one embodiment, the first cover body 21 is recessed on one side surface of the water tank body 1, and the recess is arranged corresponding to the first groove body 121 and recessed in a direction away from the water tank body 1 to form a liquid inlet channel with the first groove body 121. In this way, when the part of the first groove body 121 close to the sewage suction port 11 has a small depth, the volume of the corresponding position of the liquid inlet channel can be increased through the recess, so that the sewage tank can suck a larger volume of sewage into the water tank body 1. Figure 2 The second cover body 22 also has a sewage outlet 222, and the second cover body 22 has opposite first and second ends along the length direction X. The sewage outlet 222 is arranged at the first end away from the second end, and the air outlet 221 is arranged at the second end away from the first end. In this way, the risk of interference of the first suction assembly with the second suction assembly can be reduced. The second suction assembly is part of the base station. When the volume of sewage in the liquid storage cavity of the sewage tank reaches a certain volume, the sewage tank is sent to the base station, and the second suction assembly in the base station is connected to the liquid storage cavity through the sewage outlet 222, so that the sewage in the liquid storage cavity is pumped out of the sewage tank, so that the sewage tank can be used again. During the sewage pumping process, the flow path of the sewage can be seen from the path direction indicated by the dashed arrow. Figure 3

[0065] In one embodiment, the first cover body 21 is recessed on one side surface of the water tank body 1, and the recess is arranged corresponding to the first groove body 121 and recessed in a direction away from the water tank body 1 to form a liquid inlet channel with the first groove body 121. In this way, when the part of the first groove body 121 close to the sewage suction port 11 has a small depth, the volume of the corresponding position of the liquid inlet channel can be increased through the recess, so that the sewage tank can suck a larger volume of sewage into the water tank body 1. Figure 3 The sewage tank further comprises a sewage pumping pipe 5 arranged on one side of the liquid storage cavity along the length direction X of the water tank body 1, and one end of the sewage pumping pipe 5 is connected to the fourth end of the second groove body 122. The other end of the sewage pumping pipe 5 is configured to be connected to the second suction assembly to pump the sewage in the liquid storage cavity out.

[0066] In one embodiment, the first cover body 21 is recessed on one side surface of the water tank body 1, and the recess is arranged corresponding to the first groove body 121 and recessed in a direction away from the water tank body 1 to form a liquid inlet channel with the first groove body 121. In this way, when the part of the first groove body 121 close to the sewage suction port 11 has a small depth, the volume of the corresponding position of the liquid inlet channel can be increased through the recess, so that the sewage tank can suck a larger volume of sewage into the water tank body 1. Figure 3 Figure 6 The water tank body 1 further comprises a water guide well 13, and the bottom of the water guide well 13 is directly connected to the fourth end of the second groove body 122. One end of the sewage pumping pipe 5 is connected to the well mouth of the water guide well 13, and the other end of the sewage pumping pipe 5 is connected to the second cover body 22 through the first cover body 21 and connected to the sewage outlet 222. The sewage pumping pipe 5 and / or the sewage outlet 222 are configured to be directly connected to the second suction assembly.

[0067] Specifically, the first suction assembly can be directly connected to the sewage outlet 222 or connected to one end of the sewage pumping pipe 5 away from the water guide well 13. Of course, the first suction assembly can also be connected to the sewage outlet 222 or the sewage pumping pipe 5 through an intermediate pipe.

[0068] ​​The sewage tank provided by the embodiment forms an air duct 23 in communication with the liquid storage cavity through the cover assembly 2 arranged on the water tank body 1, and at least part of the air duct 23 extends along a first direction intersecting the height direction Z of the water tank body 1, and the air outlet 221 is in communication with the liquid storage cavity through the air duct 23. On the one hand, since the air duct 23 is located at a higher position relative to the liquid storage cavity along the height direction of the sewage tank, garbage and a large amount of sewage and other pollutants entering the liquid storage cavity cannot directly flow into the first suction assembly, thereby playing a role in isolating the pollutants. On the other hand, the air duct 23 is additionally arranged to lengthen the path of the pollutants from the liquid storage cavity to the first suction assembly, which is more conducive to water vapor separation of the pollutants before reaching the first suction assembly, so that the pollutants entering the first suction assembly have a lower water content, thereby reducing the risk of the pollutants being discharged to the outside along with the airflow, and improving the cleaning effect and the service life of the first suction assembly.

[0069] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A sewage tank, characterized in that, include: The main body of the water tank is equipped with a suction port and a liquid storage tank connected to the suction port; A cover assembly is placed on the main body of the water tank and cooperates with the liquid storage tank to form a liquid storage cavity; the cover assembly is provided with an air outlet and an air duct; the air duct is located inside the cover assembly, and the air outlet communicates with the liquid storage cavity through the air duct; wherein, the air duct and the liquid storage cavity are arranged adjacent to each other along the height direction of the main body of the water tank.

2. The sewage tank according to claim 1, characterized in that, The cover assembly includes: A first cover is placed on the main body of the water tank and cooperates with the liquid storage tank to form the liquid storage cavity; and the first cover is provided with a communication hole that communicates with the liquid storage cavity; The second cover is placed on the side of the first cover away from the main body of the water tank and cooperates with the first cover to form an air duct; the air outlet is opened on the second cover.

3. The sewage tank according to claim 2, characterized in that, Also includes: A gas-liquid separator is at least partially disposed within the air duct and connected to the air outlet, and is configured to perform gas-liquid separation on the airflow entering the gas-liquid separator.

4. The sewage tank according to claim 3, characterized in that, The first cover has a flow guide groove on the side surface opposite to the main body of the water tank; one end of the flow guide groove extends to communicate with the gas-liquid separator; the other end of the flow guide groove extends to the communication hole and communicates with the liquid storage chamber through the communication hole, so as to be configured to allow the liquid separated by the gas-liquid separator to flow back to the liquid storage chamber through the flow guide groove.

5. The sewage tank according to claim 4, characterized in that, The first cover has a receiving groove on the side surface facing away from the main body of the water tank; one end of the guide groove extends to communicate with the receiving groove. The second cover covers the receiving groove and cooperates with the receiving groove to form a limiting cavity; the gas-liquid separator is provided with a separation part, which is located in the limiting cavity and is configured to separate the liquid carried in the gas flow into the limiting cavity.

6. The sewage tank according to any one of claims 2-5, characterized in that, The liquid storage tank includes a first tank and a second tank, the first tank and / or the second tank extending along the length of the main body of the water tank; and the first end of the first tank is directly connected to the suction port, the second end of the first tank is directly connected to the third end of the second tank; the orthographic projection of the connecting hole on the main body of the water tank is located at the fourth end of the second tank opposite to the third end.

7. The sewage tank according to claim 6, characterized in that, Both the first tank and the second tank extend along the length of the main body of the water tank; and the first tank and the second tank are arranged opposite each other along the width of the main body of the water tank.

8. The sewage tank according to claim 6, characterized in that, The second cover also has a drain outlet; the second cover has a first end and a second end opposite to each other along its length; the drain outlet is located at the first end away from the second end; the air outlet is located at the second end away from the first end; The wastewater tank also includes a sludge suction pipe, which is located along the length of the tank body on one side of the liquid storage chamber, and one end of the sludge suction pipe is connected to the fourth end of the second tank body; the other end of the sludge suction pipe is configured to be connected to the second suction assembly to extract the waste from the liquid storage chamber.

9. The sewage tank according to claim 8, characterized in that, The main body of the water tank also includes a water inlet well, the bottom of which is directly connected to the fourth end of the second tank; one end of the sludge suction pipe is connected to the wellhead of the water inlet well, and the other end of the sludge suction pipe passes through the first cover and is connected to the second cover, and is connected to the sludge outlet; the sludge suction pipe and / or the sludge outlet are configured to be directly connected to the second suction assembly.

10. The sewage tank according to claim 2, characterized in that, The first cover and the water tank body, the second cover and the first cover, and / or the second cover and the water tank body are detachably connected.

11. A cleaning device, characterized in that, include: The wastewater tank as described in any one of claims 1-10; The first suction component is connected to the air outlet of the sewage tank and is configured to create negative pressure at the suction port of the sewage tank through the air duct of the sewage tank.

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