CN218943254U - Dirt collection mechanism, base station and cleaning device - Google Patents

Abstract

The application relates to a dirt collection mechanism, a base station and a cleaning device. The dirt collection mechanism includes: the box body is internally provided with a dirt collecting cavity, and an air outlet communicated with the dirt collecting cavity is formed in the box body; the air extraction component is matched and connected at the air outlet and is used for driving the air in the dirt collection cavity to flow out; and the collection piece is connected with the box body and is used for collecting gas information of the gas flowing out from the gas outlet, and the gas extraction component is configured to be closed when the gas information meets the condition that the water quantity is full. The application provides a dirt collection mechanism, basic station and cleaning device have higher detection accuracy.

Description

Dirt collection mechanism, base station and cleaning device

Technical Field

The application relates to the technical field of household cleaning, in particular to a dirt collecting mechanism, a base station and a cleaning device.

Background

Aiming at the pain points of manual cleaning of users, the cleaning device with the self-cleaning base station becomes the main stream of the household cleaning industry. The walking body in the cleaning device returns to the base station after the wet cleaning task is executed, and the base station cleans cleaning pieces of the walking body and recovers sewage into a sewage collecting mechanism of the base station.

To prevent sewage from overflowing, the sewage collecting mechanism needs to be subjected to liquid level detection. Traditional liquid level detection mode detects the liquid level of dirt collection mechanism for using hall subassembly, and the accuracy of detecting with this kind of detection mode is lower.

Disclosure of Invention

Accordingly, it is necessary to provide a dirt collecting mechanism, a base station and a cleaning device with higher detection accuracy, aiming at the problem of lower detection accuracy.

A dirt collection mechanism, the dirt collection mechanism comprising:

the box body is internally provided with a dirt collecting cavity, and an air outlet communicated with the dirt collecting cavity is formed in the box body;

the air extraction component is matched and connected at the air outlet and is used for driving the air in the dirt collection cavity to flow out; and

the collection piece is connected with the box, the collection piece is used for collecting the gas information of the gas flowing out through the gas outlet, and the air extraction component is configured to be closed when the gas information meets the water quantity full condition.

In an embodiment, the air extraction assembly comprises an air extraction pump and an air inlet pipe, and two opposite ends of the air inlet pipe are respectively communicated with the air outlet and the air extraction pump;

the acquisition piece is connected to the air inlet pipe in a matching mode and is used for acquiring the gas information of the gas in the air inlet pipe.

In an embodiment, the collecting member is a gas pressure sensor, and the gas information is a gas pressure value.

In an embodiment, the sewage collecting device further comprises an opening and closing floater in the sewage collecting cavity, wherein the opening and closing floater is movably connected to the box body in a matched mode and is provided with a first position for opening the air outlet and a second position for closing the air outlet, and the opening and closing floater is switched from the first position to the second position under the action of buoyancy;

when the water volume in the sewage collection cavity is less than full, the opening and closing floater is positioned at the first position; when the water volume in the sewage collection cavity is full, the opening and closing floater is positioned at the second position.

In one embodiment, the opening and closing floater is rotatably arranged on the box body and comprises a floating part and an opening and closing part which are connected;

when the opening and closing floater is positioned at the first position, the opening and closing part opens the air outlet; when the opening and closing floater is positioned at the second position, the opening and closing part closes the air outlet;

the floating part drives the opening and closing part to rotate along a first direction under the action of buoyancy, so that the opening and closing floater moves from the first position to the second position.

In an embodiment, the gravity of the floating part is greater than the gravity of the opening and closing part, and when the water volume in the sewage collection cavity is less than the gravity of the opening and closing part, the floating part drives the opening and closing part to rotate along a second direction opposite to the first direction under the action of the gravity of the floating part, so that the opening and closing part opens the air outlet.

In an embodiment, the sewage collection device further comprises a rotating shaft, wherein the rotating shaft is arranged in the sewage collection cavity and is rotatably connected with the opening and closing floater and the box body.

In one embodiment, the surface of the opening and closing float facing the air outlet is provided with an elastic sealing element.

A base station comprising a soil collecting mechanism as in any one of the above embodiments.

A cleaning device comprising a base station as in the previous embodiments.

Above-mentioned dirt collection mechanism, basic station and cleaning device are used for gathering the gaseous information of gas that flows out through the gas outlet through setting up the collection piece, and the subassembly of bleeding is disposed and is closed when gaseous information satisfies the water yield and has satisfied the condition, and whole testing process hardly receives the influence of assembly error, and gaseous information has reacted the aqua storage volume and the liquid level information in the dirt collection chamber accurately moreover to help promoting dirt collection mechanism, basic station and cleaning device liquid level detection's precision.

Drawings

FIG. 1 is a schematic view of an overall structure of a dirt collecting mechanism according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the dirt collection mechanism of FIG. 1 with the on-off float closing the air outlet;

fig. 3 is a cross-sectional view of the dirt collection mechanism of fig. 1, with the opening and closing float opening the air outlet.

Reference numerals:

1. a dirt collecting mechanism; 10. a case; 11. a dirt collection cavity; 12. an air outlet; 13. a sewage inlet; 14. a cover body; 15. a box main body; 20. an air extraction assembly; 21. an air extracting pump; 22. an air inlet pipe; 23. an air outlet pipe; 30. a collection member; 40. opening and closing the floater; 41. a floating part; 42. an opening and closing part; 50. a rotating shaft; 60. and a sewage inlet pipe.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The application provides a cleaning device, cleaning device include basic station and walking main part, and the basic station is placed on waiting to clean the face, and the walking main part walks on waiting to clean the face for clean. The surface to be cleaned may be a floor, a table top, or other bearing surface that may be used to carry an object. The walking body can be a sweeping robot, a sweeping and mopping integrated robot, a floor washing robot and the like.

The walking body is provided with a cleaning piece, the cleaning piece can be a rolling brush, a mop and the like, and when the walking body walks on the surface to be cleaned, the cleaning piece can perform cleaning operation on the surface to be cleaned.

Referring to fig. 1, 2 and 3, the base station includes a substrate, a dirt collecting mechanism 1 and a cleaning component, the dirt collecting mechanism 1 and the cleaning component are disposed on the substrate, and the substrate is used for carrying the cleaning component and the dirt collecting mechanism 1. The substrate is provided with a self-cleaning space, which may be in the form of a tank, a cavity or other space, for example. The space within the dirt collection means 1 is in fluid communication with the self-cleaning space. When the walking main body returns to the base station and the cleaning piece is positioned in the self-cleaning space, the cleaning component in the base station automatically cleans the cleaning piece, and the sewage cleaned in the self-cleaning space is recovered into the sewage collecting mechanism 1.

Specifically, the dirt collecting mechanism 1 comprises a box body 10, an air extraction assembly 20 and a collecting piece 30, a dirt collecting cavity 11 is arranged in the box body 10, an air outlet 12 communicated with the dirt collecting cavity 11 is formed in the box body 10, the air extraction assembly 20 is connected to the air outlet 12 in a matching mode and used for driving air in the dirt collecting cavity 11 to flow out to the outside, the collecting piece 30 is connected with the box body 10, the collecting piece 30 is used for collecting air information of the air flowing out through the air outlet 12, and the air extraction assembly 20 is configured to be closed when the air information meets the water quantity full condition.

The case 10 may include a case body 15 and a cover 14, where the case body 15 is a hollow structure with an opening at one end, and the cover 14 is covered at the opening of the case body 15 and is used to open or close the opening of the case body 15. In some embodiments, the cover 14 may be rotatably coupled to the case body 15, for example, the cover 14 may be rotatably coupled to the case body 15 by a rotation shaft 50, a spherical pair, a hinge, or the like. In other embodiments, the cover 14 may be detachably connected to the case body 15, for example, the cover 14 may be detachably connected to the case body 15 by a detachable member such as a screw, a pin, a buckle, or the like. The specific manner is not limited herein, and may be selected according to the need.

When the cover 14 closes the opening of the tank body 15, the cover 14 and the tank body 15 together form the dirt collecting cavity 11, and when the cover 14 opens the opening of the tank body 15, the sewage can flow out from the opening of the tank body 15 to remove the sewage in the tank body 10.

The dirt collecting mechanism 1 further comprises a dirt inlet pipe 60, the box main body 15 is further provided with a dirt inlet 13 communicated with the dirt collecting cavity 11, and the dirt inlet pipe 60 is matched and connected with the dirt inlet 13 and is communicated with the dirt inlet 13 to form a dirt inlet channel. When the air extraction assembly 20 works, sewage in the self-cleaning space can flow into the sewage collecting cavity 11 from the sewage inlet channel to be collected.

The air extraction assembly 20 is mainly used for extracting air in the dirt collection cavity 11 and forming negative pressure in the dirt collection cavity 11. The pumping assembly 20 may include only the pumping pump 21, or may include the pumping pump 21 and the air inlet pipe 22, or may include the pumping pump 21, the air inlet pipe 22, the air outlet pipe 23, and so on.

The gas information collected by the collecting member 30 may be gas information at the gas outlet 12, or the gas information collected by the collecting member 30 may also be gas information in the process that the gas flows out of the gas outlet 12 to the outside, which may be specifically set according to the requirement.

The gas information may be a gas pressure value, a gas flow rate value, a gas concentration value, or the like. Taking gas information as an example of a gas pressure value, the collecting member 30 may be a gas pressure sensor, and the water amount is full, so that the gas pressure value is smaller than a preset gas pressure value. Taking gas information as a gas flow value as an example, the collecting member 30 may be a gas flow sensor, and the water amount is full, if the gas flow value is smaller than a preset flow value. Taking gas information as a gas concentration value as an example, the collecting member 30 may be a gas concentration sensor, and the water amount is full, so that the gas concentration value is smaller than a preset concentration value. That is, the collecting member 30 and the water volume full condition are required to be set according to the specific form of the gas information. When the gas information does not meet the water quantity full condition, the sewage collecting cavity 11 can continue to feed water, and when the gas information meets the water quantity full condition, the sewage collecting cavity 11 needs to stop feeding water.

It should be noted that, when the water volume is full, the liquid surface in the dirt collecting chamber 11 may be located in the same plane as the plane in which the opening of the tank main body 15 is located, or the liquid surface in the dirt collecting chamber 11 may be located below the plane in which the opening of the tank main body 15 is located. In order to reduce the risk of leakage of sewage from the air outlet 12 to the outside and from the gap between the tank body 15 and the cover 14, the following embodiment will preferably illustrate an example in which the liquid surface in the sewage collection chamber 11 is located on the plane where the opening of the tank body 15 is located and below the air outlet 12 when the amount of water is set to be full. The air outlet 12 may be disposed on the box body 15 at a position adjacent to the opening, or may be disposed on the cover 14, preferably disposed on the box body 15 at a position adjacent to the opening and below the opening of the box body 15, so as to reduce leakage of sewage caused by the sewage exceeding the opening of the box body 15 in the air outlet process.

Preferably, the base station further comprises a controller, the controller is electrically connected with the collecting member 30 and the air extraction assembly 20, the collecting member 30 feeds back collected gas information to the controller, the controller compares the gas information with the water quantity full condition, and when the gas information does not meet the water quantity full condition, the controller controls the air extraction assembly 20 to continuously work, so that vacuum can be formed in the dirt collection cavity 11, and then sewage in the self-cleaning space can flow into the dirt collection cavity 11 through the dirt inlet channel for collection. When the gas information meets the condition that the water quantity is full, the controller controls the air extraction assembly 20 to stop working, so that sewage in the self-cleaning space stops entering the sewage collecting cavity 11, and the sewage in the sewage collecting cavity 11 is prevented from overflowing due to overfilling. Wherein the contaminated water may overflow from the gap between the cover 14 and the tank main body 15 or the air outlet 12.

In the prior art, the dirt collecting mechanism 1 generally adopts a Hall assembly to detect the liquid level. The Hall element comprises a magnet and an induction piece electrically connected with the controller, a floater is arranged in the sewage collecting cavity 11, and the magnet is positioned on the floater and moves up and down along with the floater in the sewage collecting cavity 11 under the influence of the liquid level. The sensing piece is arranged on the base body and is electrically connected with the controller. The sensing piece is provided with a lower detection limit position and an upper detection limit position above the lower detection limit position in the lifting direction of the liquid level, and a detection area for forming the sensing piece is defined between the lower detection limit position and the upper detection limit position. When the float, the magnet and the set water level are located in the detection area (the set water level is located below the detection upper limit position or is flush with the detection upper limit position), the sensing piece collects the actual position of the magnet, so that the controller can judge whether the water level in the sewage collection cavity 11 is full according to the actual position collected by the sensing piece. When the set liquid level with the full water quantity is located below the upper limit detection position due to the assembly error of the sensing piece, the sensing piece sends a signal to the controller when the magnet is located at the upper limit detection position, and the controller judges that the water quantity in the sewage collecting cavity 11 is full. In this way, the water storage is stopped when the water amount in the tank 10 is not full, and the space utilization rate of the tank 10 is low. That is, in the conventional detection method, the accuracy of detection is low due to assembly errors, and thus the space utilization is low.

In this application, through setting up collection piece 30 and being used for gathering the gaseous gas information of gas that flows out through gas outlet 12, the subassembly 20 of bleeding is disposed and is closed when gas information satisfies the water yield and has satisfied the condition, and whole testing process hardly receives the influence of assembly error, and gas information has reacted the water storage volume and the liquid level information in the dirty chamber 11 of collection accurately to help promoting the precision of dirty mechanism 1 liquid level detection of collection. In addition, compared with the dirt collecting mechanism 1 in the prior art, the dirt collecting mechanism 1 in this way has the advantages that the relation between the detection area and the set water level is not needed to be considered, and the assembly difficulty is lower.

In some embodiments, the pumping assembly 20 includes a pumping pump 21 and an air inlet pipe 22, and opposite ends of the air inlet pipe 22 are respectively communicated with the air outlet 12 and the pumping pump 21. The collecting member 30 is coupled to the air inlet pipe 22, and is used for collecting air information of air in the air inlet pipe 22.

The suction pump 21 may be directly fixed to the casing 10, or may be connected only to the connection pipe. The suction pump 21 is electrically connected to the controller and is turned on or off under the control of the controller. Of course, in other embodiments, the pump 21 may be manually turned on and off.

The air extraction assembly 20 may further include an air outlet pipe 23, where the air outlet pipe 23 is coupled to the air pump 21 and is connected between the air pump 21 and the outside. When the air pump 21 works, the air in the dirt collecting cavity 11 flows out to the outside through the air outlet 12, the air inlet pipe 22, the air pump 21 and the air outlet pipe 23 in sequence.

By arranging the collecting part 30 to collect the gas information of the gas in the gas inlet pipe 22, compared with the collecting part 30 to collect the gas information in the gas outlet pipe 23, or the collecting part 30 to collect the gas information of the gas flowing in the air pump 21, the collecting part 30 collects the obtained gas information more timely, and when the gas information meets the water quantity full condition, the control can control the air pump 21 to be closed more rapidly, so that the risk of sewage overflowing through the gas outlet 12 can be further reduced.

In some embodiments, the acquisition member 30 is a gas pressure sensor and the gas information is a gas pressure value.

The air pressure sensor can accurately acquire the air pressure value of the air flowing out of the air outlet 12, thereby being beneficial to improving the accuracy of detection.

Referring to fig. 2 and 3 again, in some embodiments, the dirt collecting mechanism 1 further includes an opening and closing float 40 located in the dirt collecting chamber 11, the opening and closing float 40 is movably coupled to the case 10, and has a first position for opening the air outlet 12 and a second position for closing the air outlet 12, and the opening and closing float 40 is switched from the first position to the second position under the action of the buoyancy force. When the water volume in the sewage collecting cavity 11 is not full, the opening and closing floater 40 is positioned at the first position; when the water volume in the dirt collecting cavity 11 is full, the opening and closing floater 40 is located at the second position.

Wherein, when the opening and closing float 40 is coupled to the case 10, the air outlet 12 can be opened or closed by sliding, rotating or other movement means with respect to the case 10. For example, a guide channel extending along the lifting direction of the liquid level is formed in the dirt collecting cavity 11 of the box body 10, the opening and closing floater 40 is positioned in the guide channel, and when the liquid level rises, the opening and closing floater 40 can rise under the guidance of the guide channel until the air outlet 12 is closed; when the liquid level drops, the start-stop float 40 descends and opens the air outlet 12 under the guidance of the guide channel.

By providing the on-off float 40, when the volume of water in the dirt collection chamber 11 is full, the on-off float 40 can move to the second position under the action of the buoyancy force and close the air outlet 12. Thus, even if the air pump 21 fails and does not stop working in time, the sewage in the sewage collecting cavity 11 is difficult to flow out of the sewage collecting cavity 11 through the air outlet 12, so that the risk of sewage leakage is reduced.

In some embodiments, the opening and closing float 40 is rotatably disposed on the case 10 and includes a floating portion 41 and an opening and closing portion 42 connected; when the on-off floater 40 is located at the first position, the on-off part 42 opens the air outlet 12; when the on-off floater 40 is at the second position, the on-off part 42 closes the air outlet 12; the floating part 41 drives the opening and closing part 42 to rotate along the first direction a under the action of the buoyancy, so that the opening and closing floater 40 moves from the first position to the second position.

The on-off floater 40 can be rotatably connected with the inner wall of the dirt collecting cavity 11 through a rotating shaft 50, a hinge or a spherical pair and the like.

As the sewage increases, the liquid level rises, and the floating portion 41 drives the opening and closing portion 42 to rotate along the first direction a under the action of the floating force, so that the opening and closing floater 40 can move from the first position to the second position. When the on-off float 40 is in the second position, the on-off portion 42 is closed.

By arranging the opening and closing floater 40 to be rotatably connected with the box body 10, the opening and closing floater 40 can not be impacted by sewage in the sewage collecting cavity 11 to float up and down on the premise that the air outlet 12 can be opened or closed, and therefore the opening and closing floater 40 can reliably work.

In some embodiments, the gravity of the floating portion 41 is greater than the gravity of the opening and closing portion 42, and when the water volume in the dirt collecting chamber 11 is not full, the floating portion 41 drives the opening and closing portion 42 to rotate along the second direction b opposite to the first direction a under the action of the gravity, so that the opening and closing portion 42 opens the air outlet 12.

The floating portion 41 is a portion located on one side of the rotation axis of the start-stop float 40 itself, and the start-stop portion 42 is a portion located on the other side of the rotation axis of the start-stop float 40 itself. The float portion 41 and the opening and closing portion 42 are configured together to form the opening and closing float 40.

Specifically, when the amount of water in the dirt collecting chamber 11 is less than the amount of water, the gravity of the floating part 41 is greater than the gravity of the opening and closing part 42, so that the whole opening and closing floater 40 is eccentrically arranged relative to the rotation axis thereof. Thus, under the gravity action of the floating portion 41, the floating portion 41 can drive the opening and closing portion 42 to rotate along the second direction b, so that the floating portion 41 is located below the opening and closing portion 42, and the opening and closing portion 42 opens the air outlet 12. When the liquid level rises, the floating part 41 drives the opening and closing part 42 to rotate along the first direction a under the action of the buoyancy, so that the opening and closing part 42 can gradually approach the air outlet 12 and close the air outlet 12.

Therefore, by setting the gravity of the floating part 41 to be larger than that of the opening and closing part 42, the opening and closing part 42 can always open the air outlet 12 when the water quantity is not full, so that the dirt collecting work of the dirt collecting mechanism 1 can be normally performed.

In some embodiments, the dirt collecting mechanism 1 further includes a rotating shaft 50, where the rotating shaft 50 is disposed in the dirt collecting chamber 11 and rotatably connects the opening and closing float 40 and the box 10.

Specifically, the inner wall of the case 10 and the opening/closing floater 40 are provided with rotary holes, and the rotary shaft 50 rotatably penetrates through the rotary holes of the case 10 and the opening/closing floater 40. The rotating shaft 50 is used for rotating and connecting, so that the assembly efficiency of the dirt collecting mechanism 1 is improved.

In some embodiments, the surface of the start-stop float 40 facing the air outlet 12 is provided with an elastic seal (not shown).

The elastic sealing piece can be a rubber piece, a silica gel piece or other elastic components.

The elastic sealing member is used for sealing a gap between the opening and closing float 40 and the edge of the air outlet 12 when the opening and closing float 40 closes the air outlet 12. Thus, when the opening and closing float 40 closes the air outlet 12, the sewage in the sewage collecting cavity 11 is extremely difficult to leak from the air outlet 12 to the outside, so that the risk of sewage leakage is reduced, and the electricity safety of the air extraction assembly 20 is ensured.

Above-mentioned dirt collection mechanism 1, basic station and cleaning device, through setting up collection spare 30 and being used for gathering the gaseous information of gas that flows out through gas outlet 12, the subassembly 20 of bleeding is disposed and is closed when gaseous information satisfies the water yield full condition, and whole testing process hardly receives the influence of assembly error, and gaseous information has reacted the water storage volume and the liquid level information in the dirt collection chamber 11 accurately moreover to help promoting dirt collection mechanism 1, basic station and cleaning device liquid level detection's precision.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A dirt collection mechanism, the dirt collection mechanism comprising:

the box body (10) is internally provided with a dirt collecting cavity (11), and the box body (10) is provided with an air outlet (12) communicated with the dirt collecting cavity (11);

the air extraction component (20) is matched and connected at the air outlet (12) and is used for driving the air in the dirt collection cavity (11) to flow out to the outside; and

the collection piece (30) is connected with the box body (10), the collection piece (30) is used for collecting gas information of gas flowing out through the gas outlet (12), and the air extraction assembly (20) is configured to be closed when the gas information meets the water quantity full condition.

2. The dirt collection mechanism according to claim 1, wherein the air extraction assembly (20) comprises an air extraction pump (21) and an air inlet pipe (22), and two opposite ends of the air inlet pipe (22) are respectively communicated with the air outlet (12) and the air extraction pump (21);

the acquisition piece (30) is matched and connected to the air inlet pipe (22) and is used for acquiring the gas information of the gas in the air inlet pipe (22).

3. The dirt collection mechanism of claim 1, wherein the collection member (30) is a barometric pressure sensor and the gas information is a barometric pressure value.

4. The dirt collection mechanism of claim 1, further comprising an on-off float (40) located within the dirt collection chamber (11), the on-off float (40) movably coupled to the housing (10) and having a first position to open the air outlet (12) and a second position to close the air outlet (12), the on-off float (40) being switched from the first position to the second position under the influence of buoyancy;

when the water volume in the sewage collection cavity (11) is less than full, the opening and closing floater (40) is positioned at the first position; when the water volume in the sewage collection cavity (11) is full, the opening and closing floater (40) is positioned at the second position.

5. The dirt collection mechanism of claim 4, wherein the on-off float (40) is rotatably disposed on the case (10) and includes a float portion (41) and an on-off portion (42) that are connected;

when the opening and closing floater (40) is positioned at the first position, the opening and closing part (42) opens the air outlet (12); when the opening and closing floater (40) is positioned at the second position, the opening and closing part (42) closes the air outlet (12);

the floating part (41) drives the opening and closing part (42) to rotate along a first direction (a) under the action of buoyancy, so that the opening and closing floater (40) moves from the first position to the second position.

6. The dirt collecting mechanism according to claim 5, wherein the gravity of the floating part (41) is larger than the gravity of the opening and closing part (42), and when the water volume in the dirt collecting cavity (11) is not full, the floating part (41) drives the opening and closing part (42) to rotate along a second direction (b) opposite to the first direction (a) under the action of gravity, so that the opening and closing part (42) opens the air outlet (12).

7. The dirt collecting mechanism according to any one of claims 5 to 6, further comprising a rotating shaft (50), wherein the rotating shaft (50) is arranged in the dirt collecting cavity (11) and is rotatably connected with the opening and closing float (40) and the box body (10).

8. A dirt collecting mechanism according to any one of claims 4 to 6, characterized in that the surface of the on-off float (40) facing the air outlet (12) is provided with an elastic seal.

9. A base station comprising a soil pick-up mechanism as claimed in any one of claims 1 to 8.

10. A cleaning device comprising a base station as claimed in claim 9.

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