CN219680497U - Water tank assembly and cleaning robot base station - Google Patents

Abstract

The utility model discloses a water tank assembly and a cleaning robot base station, wherein the water tank assembly comprises: the water tank is provided with a vacuum cavity and a sewage cavity which are communicated with each other; the exhaust pipe of the air exhaust device is communicated with the vacuum cavity, and the air exhaust device is used for enabling the vacuum cavity to form negative pressure; a sewage pipe communicated with the vacuum cavity, wherein the sewage pipe is used for enabling sewage to be pumped into the vacuum cavity under the action of negative pressure; the switch control is arranged at the communication part of the vacuum cavity and the sewage cavity and used for controlling the communication or separation of the vacuum cavity and the sewage cavity. According to the technical scheme, the vacuum cavity is additionally and independently arranged, so that the vacuum cavity is used for pumping sewage, the sewage cavity is used for discharging sewage, and therefore, even if the sewage cavity is frequently opened and closed to discharge sewage in the sewage cavity, the air tightness of the vacuum cavity is not affected, the vacuum degree of the vacuum cavity is not affected, the sewage can be more effectively pumped into the vacuum cavity, and the sewage recovery effect of the cleaning robot base station is improved.

Description

Water tank assembly and cleaning robot base station

Technical Field

The utility model relates to the technical field of cleaning, in particular to a water tank assembly and a cleaning robot base station.

Background

The cleaning robot base station is generally provided with a water tank assembly, which is generally provided with a sewage chamber for storing the recovered sewage. In the prior art, the sewage cavity is usually vacuumized through the vacuum pump, so that the sewage cavity forms negative pressure, and sewage is pumped into the sewage cavity under the action of the negative pressure. Because the sewage in the sewage cavity needs to be discharged, the sewage cavity needs to be frequently opened and closed, so that the air tightness of the sewage cavity is poor, the vacuum degree of the sewage cavity is influenced, and the sewage recovery effect of the base station of the cleaning robot is influenced.

Disclosure of Invention

The utility model aims to provide a water tank assembly, which aims to ensure that the air tightness of a vacuum cavity is not influenced under the condition that a sewage cavity is frequently opened and closed to remove sewage in the sewage cavity, so that the vacuum degree of the vacuum cavity is ensured, sewage can be more effectively pumped into the vacuum cavity and finally flows into the sewage cavity, and the sewage recovery effect of a cleaning robot base station is improved.

To achieve the above object, the present utility model provides a water tank assembly comprising:

the water tank is provided with a vacuum cavity and a sewage cavity which are communicated with each other;

the exhaust pipe of the air exhaust device is communicated with the vacuum cavity, and the air exhaust device is used for enabling the vacuum cavity to form negative pressure;

a sewage pipe communicated with the vacuum cavity, wherein the sewage pipe is used for enabling sewage to be pumped into the vacuum cavity under the action of negative pressure;

the switch control is arranged at the communication part of the vacuum cavity and the sewage cavity and used for controlling the communication or separation of the vacuum cavity and the sewage cavity.

Optionally, the cavity wall of the vacuum cavity has a drainage slope extending from the top wall or the side wall to the bottom wall of the vacuum cavity in the direction of the vacuum cavity towards the sewage cavity.

Optionally, the cavity wall of vacuum cavity has seted up first connecting hole and second connecting hole respectively, first connecting hole is located the top of second connecting hole, air extraction device's exhaust tube with first connecting hole intercommunication, the sewer pipe with the second connecting hole intercommunication.

Optionally, the sewage chamber is below the vacuum chamber.

Optionally, the water tank is provided with a communication hole, the vacuum cavity and the sewage cavity are communicated through the communication hole, and the switch control is installed on the communication hole;

the water tank assembly further comprises a sewage tank, the sewage tank is detachably arranged in the sewage cavity, a water through port is formed in the sewage tank, and the water through port is communicated with the inside of the sewage tank and the communication hole.

Optionally, the orthographic projection area of the water through hole is larger than the orthographic projection area of the communication hole, and the orthographic projection of the communication hole at the water through hole falls into the water through hole.

Optionally, the radial dimension of the water through hole gradually decreases from the outer end to the inner end.

Optionally, an opening is formed on one side of the sewage cavity, the sewage tank is inserted into the sewage cavity from the opening, and a drawing groove is formed on the side wall of the sewage tank corresponding to the opening; and/or the number of the groups of groups,

the water tank assembly further comprises a drain valve, the drain valve is communicated with the sewage tank, and the drain valve is used for draining sewage in the sewage tank.

Optionally, a demolding groove is formed in the top of the water tank, and the water tank assembly further comprises a cover plate, wherein the cover plate is in sealing connection with a notch of the demolding groove, so that the cover plate and the groove wall of the demolding groove are enclosed to form the vacuum cavity;

the cell wall of the demolding groove is provided with a communication hole, the communication hole is communicated with the sewage cavity, and the switch control is installed in the communication hole.

The utility model also provides a cleaning robot base station which comprises the water tank assembly.

According to the technical scheme, the air extractor is communicated with the vacuum cavity by arranging the vacuum cavity separately, and the switch control is arranged to control the communication or disconnection between the vacuum cavity and the sewage cavity, so that the vacuum cavity is used for extracting sewage, and the sewage cavity is used for draining sewage, so that the air tightness of the vacuum cavity is not affected even if the sewage cavity is frequently opened and closed to drain sewage in the sewage cavity, the vacuum degree of the vacuum cavity is not affected, the sewage can be more effectively pumped to the vacuum cavity, and the sewage recovery effect of the cleaning robot base station is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of a cistern assembly according to the present utility model;

FIG. 2 is a schematic view of the water tank assembly of the present utility model with the cover plate removed;

FIG. 3 is a schematic cross-sectional view of the cistern assembly of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a schematic view of a portion of the structure of the cistern assembly according to the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Water tank	110	Vacuum chamber
111	Drainage inclined plane	120	Sewage cavity
				130	Communication hole	140	Demolding groove
150	Cover plate	200	Air extractor
				300	Sewage pipe	400	Switch control
500	Sewage tank	510	Water through hole
				520	Drawing groove	600	Drain valve
700	Clear water tank	710	Handle groove

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, "and/or" throughout this document includes three schemes, taking a and/or B as an example, including a technical scheme, a technical scheme B, and a technical scheme that both a and B satisfy; in addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The specific structure of the tank assembly will be mainly described below.

Referring to fig. 1 to 5, in an embodiment of the present utility model, the water tank assembly for cleaning a robot base station includes:

a water tank 100, the water tank 100 having a vacuum chamber 110 and a sewage chamber 120 which are communicated with each other;

an air extracting device 200, wherein an air extracting pipe of the air extracting device 200 is communicated with the vacuum cavity 110, and the air extracting device 200 is used for forming negative pressure in the vacuum cavity 110;

a sewage pipe 300, wherein the sewage pipe 300 is communicated with the vacuum chamber 110, and the sewage pipe 300 is used for enabling sewage to be pumped into the vacuum chamber 110 under the action of negative pressure;

the switch control 400 is installed at the communication position between the vacuum chamber 110 and the sewage chamber 120, and is used for controlling the communication or separation between the vacuum chamber 110 and the sewage chamber 120.

Specifically, in this embodiment, the air extractor 200 may be an air pump, a vacuum pump, or the like. The switch control 400 may be a switch valve, such as a solenoid valve, or the like. When sewage needs to be recovered, the control switch control 400 is controlled to be closed, so that the vacuum cavity 110 is separated from the sewage cavity 120, at this time, the vacuum cavity 110 is in a closed state, and then the air extractor 200 is controlled to work, so that the vacuum cavity 110 forms negative pressure, and sewage is pumped into the vacuum cavity 110 under the action of the negative pressure. Then the switch control 400 is controlled to be opened, so that the sewage cavity 120 is communicated with the vacuum cavity 110, and as a result, sewage in the vacuum cavity 110 can flow into the sewage cavity 120, and finally the sewage in the sewage cavity 120 is discharged. After the sewage in the vacuum chamber 110 flows into the sewage chamber 120, when the sewage needs to be continuously recovered, the switch control 400 is controlled to be closed again, so that the vacuum chamber 110 is separated from the sewage chamber 120, and the vacuum chamber 110 is in a closed state … … so as to be circulated, thereby completing the sewage recovery work.

Wherein, the control circuit of the cleaning robot base station can control the air extractor to start working or stop working. Similarly, the opening or closing of the solenoid valve may also be controlled by a control circuit of the cleaning robot base station. The specific control method of the control circuit can be obtained by the prior art, and will not be described in detail here.

There are various ways of discharging sewage, a detachable sewage tank 500 can be installed in the sewage chamber 120, the sewage tank 500 is used for storing sewage, and when the sewage is required to be discharged, the sewage tank 500 is directly detached to pour out the sewage. The sewage in the sewage chamber 120 may also be directly discharged by providing a sewage discharging assembly, and the specific sewage discharging mode is not particularly limited herein.

According to the technical scheme, the vacuum cavity 110 is additionally and independently arranged, the air extractor 200 is communicated with the vacuum cavity 110, the switch control 400 is arranged to control the communication or disconnection between the vacuum cavity 110 and the sewage cavity 120, so that the vacuum cavity 110 is used for extracting sewage, and the sewage cavity 120 is used for discharging sewage, so that the air tightness of the vacuum cavity 110 is not affected even if the sewage cavity 120 is frequently opened and closed to discharge the sewage in the sewage cavity 120, the vacuum degree of the vacuum cavity 110 is not affected, the sewage can be more effectively pumped to the vacuum cavity 110, and the sewage recovery effect of the cleaning robot base station is improved.

Referring to fig. 3 and 4, fig. 3 is a schematic cross-sectional structure of the water tank assembly of the present utility model; fig. 4 is a partial enlarged view at a in fig. 3. To further enhance the recovery of the waste water, in some embodiments, the chamber wall of the vacuum chamber 110 has a drainage slope 111, the drainage slope 111 extending from the top wall or the side wall of the vacuum chamber 110 to the bottom wall in a direction of the vacuum chamber 110 towards the waste water chamber 120. That is, the drainage inclined plane 111 is inclined downwards, so, on one hand, sewage can flow into the sewage cavity 120 by means of gravity of the sewage, the flow speed of the sewage can be accelerated, and on the other hand, the cavity wall of the vacuum cavity 110 has the drainage effect, so that the flow speed of the sewage can be accelerated, the sewage can flow orderly, the flow smoothness of the sewage is improved, the sewage can flow into the sewage cavity 120 from the vacuum cavity 110 quickly and effectively, and the sewage recovery effect of the cleaning robot base station is improved.

In some embodiments, the wastewater chamber 120 is below the vacuum chamber 110. Thus, the gravity of the sewage is fully utilized, so that the sewage rapidly enters the sewage cavity 120 from the vacuum cavity 110 under the action of gravity, and the sewage recovery effect of the cleaning robot base station is improved. In combination with the embodiment that the cavity wall of the vacuum cavity 110 is provided with the drainage inclined plane 111, the lower end of the vacuum cavity 110 is integrally in a funnel shape with a wide upper part and a narrow lower part, so that the drainage effect of the cavity wall of the vacuum cavity 110 is improved to a greater extent, sewage can quickly flow into the sewage cavity 120 from the vacuum cavity 110, and the sewage recovery effect of the cleaning robot base station is improved. Further, the sewage chamber 120 is directly below the vacuum chamber 110, so that the gravity of the sewage is utilized to the maximum extent, and the sewage rapidly enters the sewage chamber 120 from the vacuum chamber 110 under the action of the gravity.

The sewage recovery effect of the cleaning robot base station may be improved in other aspects, for example, in some embodiments, the cavity wall of the vacuum cavity 110 is provided with a first connection hole and a second connection hole, the first connection hole is located above the second connection hole, the exhaust pipe of the air exhaust device 200 is communicated with the first connection hole, and the sewage pipe 300 is communicated with the second connection hole. In this embodiment, the first connecting hole for communicating with the exhaust pipe of the air extractor 200 is located above the second connecting hole communicated with the sewage pipe 300, so as to conform to the natural law that sewage flows downwards due to self gravity, and compared with the situation that the first connecting hole is located below the second connecting hole, the air extractor is more beneficial to avoiding the bad situation that sewage plugs the first connecting hole, and ensures that the exhaust pipe of the air extractor 200 can be communicated with the vacuum cavity 110, so as to ensure that the air extractor 200 can quickly and effectively make the vacuum cavity 110 form negative pressure, thereby improving the sewage recovery effect of the cleaning robot base station. In practical application, the first connecting hole and the second connecting hole may be formed on the same side of the wall cavity of the vacuum cavity 110, so that the air extractor 200 and the sewage pipe 300 are mounted on the same outer side of the water tank, so as to improve the compactness of the water tank assembly structure, and facilitate the miniaturization of the cleaning robot base station.

To facilitate the drainage of sewage, in some embodiments, the water tank 100 has a communication hole 130 through which the vacuum chamber 110 communicates with the sewage chamber 120, and the switch control 400 is mounted to the communication hole 130; the water tank assembly further comprises a sewage tank 500, the sewage tank 500 is detachably mounted in the sewage cavity 120, the sewage tank 500 is provided with a water through port 510, and the water through port 510 is communicated with the inside of the sewage tank 500 and the communication hole 130. There are many ways in which the sewage tank 500 may be detachably mounted in the sewage chamber 120, and the sewage tank may be fastened, inserted, etc. When the switch control 400 is opened, sewage in the vacuum chamber 110 passes through the communication hole 130 and then enters the interior of the sewage tank 500 through the water through hole 510 of the sewage tank 500 to be stored in the sewage tank 500, and when the sewage in the sewage tank 500 needs to be discharged, the sewage tank 500 is directly disassembled and then the sewage is removed, so that the sewage treatment device is convenient and quick. Because the sewage tank 500 is detachable, the sewage tank 500 is convenient to clean, thereby ensuring the cleaning of the inside of the cleaning robot base station, avoiding the long-term corrosion of sewage inside the cleaning robot base station, and improving the service life of the cleaning robot base station. In addition, the sewage tank 500 is also convenient to replace or maintain, and compared with the sewage tank 500 which is not detachable, the flexibility of the cleaning robot base station is improved, when the sewage tank 500 is damaged, the sewage tank 500 can be independently replaced without replacing the whole cleaning robot base station, and the use cost is saved.

In some embodiments, the orthographic projection area of the water through hole 510 is larger than the orthographic projection area of the communication hole 130, and the orthographic projection of the communication hole 130 at the water through hole 510 falls into the water through hole 510. That is, the size of the end of the water through hole 510 near the communication hole 130 is larger than the size of the water through hole 510, so that on one hand, sewage flows out of the communication hole 130 and then enters the water through hole 510, so that the sewage is prevented from flowing out of the sewage tank 500, the inner wall of the sewage cavity 120 is prevented from being polluted by the sewage, the cleaning robot base station is ensured to be clean, the sewage is prevented from corroding the cleaning robot base station for a long time, and the service life of the cleaning robot base station is prolonged. On the other hand, it is ensured that a passage having a sufficient width is provided for the sewage to pass through, that is, the water passing amount of the water passing opening 510 is ensured, the sewage in the sewage chamber 120 can be rapidly flowed into the inside of the sewage tank 500, and the sewage recovery effect of the cleaning robot base station is improved.

In some embodiments, the radial dimension of the water passage 510 decreases gradually from the outer end toward the inner end. Specifically, the outer end of the water passing port 510, i.e., the end of the water passing port near the outside of the sewage tank, i.e., the end near the communication hole 130 in this embodiment, the inner end of the water passing port, i.e., the end toward the inside of the sewage tank 500, and the end far from the communication hole 130 in this embodiment. That is, the radial dimension of the water passage opening 510 gradually decreases from one end near the communication hole 130 toward one end far from the communication hole 130. So for the inner wall of the water port 510 is formed with the water conservancy diversion inclined plane, makes the water port 510 still have the drainage effect, guarantees that sewage can be quick get into inside the sewage case 500, improves the sewage recovery effect of cleaning robot basic station.

Referring to fig. 1 and 5, fig. 1 is a schematic structural view of a water tank assembly according to the present utility model, and fig. 5 is a schematic structural view of a portion of the water tank assembly according to the present utility model. To facilitate removal of the sewage tank 500, in some embodiments, an opening is formed on one side of the sewage chamber 120, the sewage tank 500 is inserted into the sewage chamber 120 from the opening, and a drawing slot 520 is formed on a sidewall of the sewage tank 500 corresponding to the opening. In this embodiment, the sewage tank 500 is inserted into the sewage chamber 120 from one side of the sewage chamber 120, and no additional disassembly tools are needed, so that convenience in assembly and disassembly of the sewage tank 500 is improved, and thus the operation efficiency of a user is improved. The arrangement of the drawing groove 520 provides convenience for the user, so that the user can draw out the sewage tank 500 by extending into the drawing groove 520, thereby further improving the operation efficiency of the user. With respect to the specific structure of the drawing groove 520, in some embodiments, the drawing groove 520 includes a protruding section and a fastening means in sequence in the depth direction, and the fastening means has a width greater than that of the protruding section, so that a user can draw out the sewage tank 500 by pushing the protruding section into the fastening means and then pushing the groove wall of the fastening means outward by hand. It is understood that the size of the sewage tank 500 may be determined according to the size of the sewage chamber 120, so as to ensure that the water through opening 510 of the sewage tank 500 is adjacent to the communication hole 130 after the sewage tank 500 is inserted into the sewage chamber 120, so as to ensure that sewage flows into the sewage tank 500 after flowing out of the communication hole 130, i.e., entering the water through opening 510. In order to facilitate inserting and pulling out the sewage tank 500, one of the inner wall of the sewage chamber 120 and the outer wall of the sewage tank 500 may be provided with a sliding rail, and the other one is provided with a sliding groove corresponding to the sliding rail, and the sliding rail is in sliding fit with the sliding groove, so that the sewage tank 500 may be in sliding fit with the sewage chamber 120, and the disassembly and assembly rapidity of the sewage tank 500 is improved.

In practical application, the water tank 100 further has a clean water cavity, the water tank assembly further includes a clean water tank 700, the clean water tank 700 is used for storing clean water, the clean water tank 700 is detachably mounted in the clean water cavity, the mounting mode can refer to the mode that the sewage tank 500 is detachably mounted in the sewage cavity 120, that is, one side of the clean water cavity is provided with an opening, the clean water tank 700 is inserted into the sewage cavity 120 from the opening, and a handle groove 710 is formed in the side wall of the clean water tank 700 corresponding to the opening so as to facilitate mounting or dismounting of the clean water tank 700.

In some embodiments, the water tank assembly further includes a drain valve 600, the drain valve 600 being in communication with the sump 500, the drain valve 600 being for draining the sump 500. Thus, not only the sewage tank 500 is detachably arranged in the sewage cavity 120, but also the drain valve 600 is arranged for draining sewage, when the sewage in the sewage tank 500 needs to be drained, the sewage tank 500 can be selectively removed to drain the sewage, the drain valve 600 can be selectively used for draining the sewage, and the two modes can be replaced. Thus, the convenience of sewage discharge can be ensured by the arrangement of the drain valve 600, and the sewage tank 500 can be conveniently cleaned and replaced by the arrangement of the sewage tank 500, so that the use experience of a user is improved.

With continued reference to fig. 2, fig. 2 is a schematic structural diagram of the water tank assembly according to the present utility model, in which the cover plate 150 is removed, in some embodiments, a demolding groove 140 is formed at the top of the water tank, the water tank assembly further includes a cover plate 150, and the cover plate 150 is connected with a notch of the demolding groove 140 in a sealing manner, so that the vacuum cavity 110 is formed by enclosing between the cover plate 150 and a groove wall of the demolding groove 140; the wall of the demoulding groove 140 is provided with a communication hole 130, the communication hole 130 is communicated with the sewage cavity 120, and the switch control 400 is installed on the communication hole 130. There are many ways to seal the cover plate 150 to the notch of the demolding groove 140, for example, sealing and fixing the cover plate with sealant. Specifically, the water tank is provided with a dispensing groove, the dispensing groove extends along the circumferential direction of the demolding groove 140, the cover plate 150 comprises a cover body and a connecting protrusion protruding out of the side edge of the cover body, the dispensing groove is provided with sealant, the cover body covers the notch of the demolding groove 140, the connecting protrusion is inserted into the dispensing groove, the sealant seals a gap between the connecting protrusion and the groove wall of the dispensing groove, so that the cover plate 150 is covered on the demolding groove 140, the tightness of the vacuum cavity 110 is ensured, the vacuum degree of the vacuum cavity 110 is ensured, the sewage can be pumped to the vacuum cavity 110 more effectively, and the sewage recovery effect of the cleaning robot base station is improved. Further, the sum of the thicknesses of the cover body and the connecting protrusion can be equal to the depth of the dispensing slot, so that the cover body is flush with the outer wall surface of the water tank after being covered by the cover body and arranged in the dispensing slot and the demolding slot 140, and the regularity and flatness of the water tank assembly are improved.

The utility model also provides a cleaning robot base station which is matched with the cleaning robot for use, the cleaning robot base station can be used for charging the cleaning robot, the cleaning robot base station can be used for supplying cleaning water to the cleaning robot, the cleaning robot base station can also be used for recycling the cleaning water of the cleaning robot, and the cleaning robot base station can also be used for executing other actions on the cleaning robot, which are not listed here.

It should be noted that the types of the cleaning robots are various, the cleaning robots may be a sweeping robot, the cleaning robots may be a mopping machine having a sweeping function and a mopping function, the cleaning robots may be other types of cleaning robots, and the types of the cleaning robots are not particularly limited.

The cleaning robot base station comprises the water tank assembly, and the specific structure of the water tank assembly refers to the embodiment, and because the cleaning robot base station adopts all the technical schemes of all the embodiments, the cleaning robot base station at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A water tank assembly for a cleaning robot base station, the water tank assembly comprising:

the water tank is provided with a vacuum cavity and a sewage cavity which are communicated with each other;

the exhaust pipe of the air exhaust device is communicated with the vacuum cavity, and the air exhaust device is used for enabling the vacuum cavity to form negative pressure;

a sewage pipe communicated with the vacuum cavity, wherein the sewage pipe is used for enabling sewage to be pumped into the vacuum cavity under the action of negative pressure;

the switch control is arranged at the communication part of the vacuum cavity and the sewage cavity and used for controlling the communication or separation of the vacuum cavity and the sewage cavity.

2. The tank assembly of claim 1, wherein a chamber wall of the vacuum chamber has a drainage ramp extending from a top wall or a side wall to a bottom wall of the vacuum chamber in a direction of the vacuum chamber toward the wastewater chamber.

3. The tank assembly of claim 1, wherein the vacuum chamber has a first connection hole and a second connection hole formed in a wall thereof, the first connection hole being located above the second connection hole, the suction pipe of the suction device being communicated with the first connection hole, and the sewage pipe being communicated with the second connection hole.

4. The tank assembly of claim 1, wherein the waste chamber is below the vacuum chamber.

5. The water tank assembly as recited in claim 1, wherein the water tank has a communication hole through which the vacuum chamber and the sewage chamber communicate, the switch control being mounted to the communication hole;

the water tank assembly further comprises a sewage tank, the sewage tank is detachably arranged in the sewage cavity, a water through port is formed in the sewage tank, and the water through port is communicated with the inside of the sewage tank and the communication hole.

6. The water tank assembly as recited in claim 5, wherein an orthographic projection area of said water passage opening is larger than an orthographic projection area of said communication hole, and an orthographic projection of said communication hole at said water passage opening falls into said water passage opening.

7. The tank assembly of claim 5, wherein the radial dimension of the water passage opening decreases gradually from the outer end toward the inner end.

8. The water tank assembly as recited in claim 5, wherein one side of the sewage chamber is provided with an opening, the sewage tank is inserted into the sewage chamber from the opening, and a drawing groove is formed on a side wall of the sewage tank corresponding to the opening; and/or the number of the groups of groups,

the water tank assembly further comprises a drain valve, the drain valve is communicated with the sewage tank, and the drain valve is used for draining sewage in the sewage tank.

9. The water tank assembly of claim 1, wherein a demolding groove is formed in the top of the water tank, and the water tank assembly further comprises a cover plate, wherein the cover plate is in sealing connection with a notch of the demolding groove, so that the cover plate and the groove wall of the demolding groove form the vacuum cavity in a surrounding manner;

the cell wall of the demolding groove is provided with a communication hole, the communication hole is communicated with the sewage cavity, and the switch control is installed in the communication hole.

10. A cleaning robot base station comprising a water tank assembly according to any one of claims 1-9.