Cleaning brush and dust collecting device

Abstract

The present invention provides a cleaning brush, comprising: a housing (1), the housing comprising a first box (11), located at the front of the housing (1), and used to store waste in the cleaning process; a second box (12), located at the rear of the housing (1), separated from the first box (11) by a partition, and used to store secondary waste in the cleaning process; a roller brush (2), located at the front of the housing (1), and driven by a motor to clean the floor; an exhaust pipe (3), connected to the rear end of the housing (1) and communicating with the second box, and the exhaust pipe generates negative pressure on the first box and the second box under the action of a fan. By providing a two-stage sewage treatment container, the dust suction device can effectively filter out large particles of debris in the sewage or air flow during operation. This ensures that the gas sucked into the exhaust pipe and the dust collecting bucket has a small amount of dust, thereby increasing the service life of the exhaust pipe and the dust collecting bucket.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a cleaning brush and a dust collecting device. Background Art

[0002] The working principle of a vacuum cleaner is that the fan drives the impeller to rotate, doing work on the air, extracting the air in the dust bucket, creating a pressure difference between the bucket and the atmospheric pressure, and thereby sucking objects around the air inlet into the dust bucket. In existing vacuum cleaners, dust or debris is often sucked directly into the dust bucket through an exhaust pipe, causing the dust bucket to be easily filled with debris; at the same time, during the process of dust or debris being sucked into the dust bucket, it needs to pass through the exhaust pipe all the time, and long-term use will cause the exhaust pipe to become blocked or at least leave a lot of dust. In particular, for some vacuum cleaners with floor-washing functions, a steady stream of sewage will be sucked into the dust bucket during the floor-washing process, which will cause the exhaust pipe to be contaminated by sewage and reduce the service life of the exhaust pipe. Summary of the invention

[0003] The object of the present invention is to provide a cleaning brush and a dust collecting device, which can solve at least one of the above-mentioned technical problems. The specific solution is as follows:

[0004] According to a specific embodiment of the present invention, in a first aspect, the present invention provides a cleaning brush, comprising:

[0005] The housing 1 comprises: a first box 11, located at the front of the housing 1, for storing waste in the cleaning process; a second box 12, located at the rear of the housing 1, separated from the first box 11 by a partition, for storing secondary waste in the cleaning process;

[0006] The roller brush 2 is located at the front end of the housing 1 and is driven by a motor to clean the floor.

[0007] The exhaust pipe 3 is connected to the rear end of the shell 1 and communicates with the second box body 12. The exhaust pipe 3 generates negative pressure on the first box body 11 and the second box body 12 under the action of the fan.

[0008] Optionally, a first filter screen 15 is further included, which is detachably disposed on the upper surface of the first box body 11 and is used to filter debris entering the first box body 11 .

[0009] Optionally, the housing 1 further includes:

[0010] The third box 13 is located below the upper shell of the shell 1 and above the first box 11, and is used to store clean water for washing the floor;

[0011] The third box body 13 further includes at least one water spray nozzle 131, which is located at the front end of the third box body 13 and is used to spray clean water to the roller brush.

[0012] Optionally, also include:

[0013] The separation mechanism 14 is connected to the first box 11 and the second box 12 and is used to separate the waste entering the second box 12 from the first box 11 .

[0014] Optionally, the separation mechanism includes at least one hollow tube 141 and a one-way valve on the top thereof, and the hollow tube 141 extends upward along the bottom of the second box body 12 .

[0015] Optionally, a containing structure 121 is formed in the center of the shell 1 for containing the exhaust pipe 3 ; an opening 122 is provided at the top of the containing structure 121 for connecting the exhaust pipe 3 with the second box 12 .

[0016] Optionally, the height of the opening 122 in the second box body 12 is higher than the upward extending height of the hollow tube.

[0017] Optionally, the housing 1 further includes: a second filter 16 detachably disposed at the opening 122 for filtering debris entering the exhaust pipe 3 from the opening 122 .

[0018] Optionally, the housing 1 further includes: a dust bag 17 detachably disposed at the hollow tube 141 for collecting debris separated from the separation mechanism 14 .

[0019] According to a specific embodiment of the present invention, in a second aspect, the present invention provides a dust suction device, comprising any cleaning brush as described above.

[0020] Compared with the prior art, the embodiments of the present invention have the following technical effects:

[0021] The cleaning brush and dust collecting device provided by the present invention are provided with two-stage sewage treatment containers, and a filter screen is provided in each stage of the treatment container, so that the dust collecting device can effectively filter out large particles of debris in sewage or air flow during operation. This ensures that the gas sucked into the exhaust pipe and the dust collecting bucket has a small amount of dust, prolongs the service life of the exhaust pipe and the dust collecting bucket, and effectively filters sewage during the clean water cleaning process, making the cleaning efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 A schematic diagram of the overall structure of a cleaning brush provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of a sewage tank according to the present invention;

[0025] Figure 3 It is a schematic diagram of the front structure of a sewage tank according to the present invention;

[0026] Figure 4 It is a schematic diagram of the back structure of a sewage tank according to the present invention;

[0027] Figure 5 It is a structural schematic diagram of a specific clean water tank of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0030] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0031] It should be understood that although the terms first, second, third, etc. may be used to describe ... in the embodiments of the present invention, these ... should not be limited to these terms. These terms are only used to distinguish .... For example, without departing from the scope of the embodiments of the present invention, the first ... may also be referred to as the second ..., and similarly, the second ... may also be referred to as the first ....

[0032] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0033] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0034] To facilitate understanding, the specific application scenarios of the embodiments of the present application are first introduced below.

[0035] The vacuum cleaner provided in the embodiments of the present application includes but is not limited to an upright vacuum cleaner, a horizontal vacuum cleaner, a handheld vacuum cleaner, and an automatic vacuum cleaner (such as a sweeping robot). The basic structure of the vacuum cleaner includes a control system, a fan, a pre-filter, a dust bucket, a connecting rod, a brush head, and the like. The cyclone separator is located in the dust bucket. When the fan sucks external dust into the dust bucket, the cyclone separator separates air and dust, allowing air to enter the fan and dust to fall into the dust bucket, thereby achieving dust removal. According to the brush head mechanism, it can include a dry vacuum cleaner and a wet vacuum cleaner. The specific structure is described in the following implementation method.

[0036] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 As shown, according to the specific implementation manner of the present invention, in the first aspect, the embodiment of the present invention provides a dry cleaning brush, which is detachably connected to one end of the connecting rod of the vacuum cleaner through a movable connection part. The cleaning brush contacts with the floor, carpet, etc. for cleaning during use. Specifically, the cleaning brush comprises: a shell 1, a roller brush 2 and an exhaust pipe 3, wherein the shell 1 comprises a semi-enclosed space formed by an upper shell and a lower shell. In one implementation manner, the upper shell can be a planar structure such as a cover plate, and the lower shell is a U-shaped structure including a bottom plate and a side plate. Of course, the specific structure of the shell 1 is not solely limited, and any shape structure that can be implemented is included within the scope of the present embodiment.

[0039] The housing 1 includes: a first box 11, located at the front of the housing 1, for storing waste during cleaning; a second box 12, located at the rear of the housing 1, and separated from the first box 11 by a partition. The first box 11 and the second box 12 can be used to store waste such as dust, large particles of garbage, and sewage. The structure of the first box 11 and the second box 12 is preferably a rectangular structure, such as Figure 2 As shown, it can also be U-shaped or other shapes, which is not limited. The first box body 11 and the second box body 12 form an L-shaped structure, which are used for two filtration and storage respectively.

[0040] The roller brush 2 is located at the front end of the housing 1 and cleans the floor when driven by a motor.

[0041] The exhaust pipe 3 is connected to the rear end of the shell 1 and communicates with the second box body 12. The exhaust pipe 3 generates negative pressure on the first box body 11 and the second box body 12 under the action of the fan, and the waste is sucked into the first box body 11 and / or the second box body 12 under the action of the fan.

[0042] The handheld host fan provides suction, and the fan evacuates the second box 12 through the exhaust pipe 3, so that the second box 12 generates negative pressure. Under the action of negative pressure, the first box 11 is extracted, and the first box 11 is drawn into the second box 12. According to the different properties of debris and gas, the gas is suspended in the air, and the debris will fall into the first box 11 or the second box 12 under the influence of gravity. At the same time, it is separated by the centrifugal mechanism. The gas is sucked into the dust barrel by the suction force and finally discharged outside. The debris is stored in the second box 12. The second box 12 and the brush head are designed with a separate structure, which is convenient for disassembly and assembly, cleaning, and garbage disposal.

[0043] Optionally, the housing 1 further includes: a separation mechanism 14, located between the first box 11 and the second box 12, and used to connect the first box 11 and the second box 12. Figure 3 As shown, as an optional embodiment, the separation mechanism 14 includes at least one hollow tube 141, and the hollow tube 141 extends upward along the bottom of the second box 12. The hollow tube can be a circular or square structure, which is not limited. The hollow tube 141 realizes the connection between the first box 11 and the second box 12 through the connecting tube 143, so that the waste such as dust is sucked by the fan from the first box 11 through the connecting tube 143 and the hollow tube 141 to the second box 12.

[0044] like Figure 4As shown, a receiving structure 121 is formed in the center of the second box 12 for receiving the exhaust pipe 3; in one embodiment, the receiving structure 121 is formed into an arched door structure, and of course, it can also be formed into a square or circular structure, which is not limited to this. An opening 122 is provided on the top of the receiving structure 121 for connecting the exhaust pipe 3 and the second box 12. The opening 122 can be a large opening or a plurality of small openings.

[0045] The height of the opening 122 is higher than the height of the hollow tube extending upward. For example, the hollow tube extends upward to a position 10% lower than the height of the second box body 12, and the opening 122 is arranged at the top of the second box body 12. The opening 122 preferably forms an upward protruding structure to facilitate gas circulation and external dust bag or filter.

[0046] As an optional embodiment, the housing 1 further includes: a first filter 15, which is detachably disposed on the upper surface of the first box 11, and is used to filter the debris entering the first box 11. Optionally, the housing 1 further includes: a second filter 16, which is detachably disposed at the opening 122, and is used to filter the debris entering the exhaust pipe 3 from the opening 122. Optionally, the housing 1 further includes: a dust bag 17, which is detachably disposed at the hollow tube 141, and is used to filter the debris entering the exhaust pipe 3 from the hollow tube 141, that is, a dust bag is added in the second box 12 to collect the debris separated from the separation mechanism 14.

[0047] Since dust does not fall like liquid sewage after passing through the separation mechanism, it continues to enter the suction rod through the opening 122 with the wind and is stored in the dust bag or dust bucket. If a filter 16 (with the function of easy disassembly and cleaning) is set at the position of the opening 122, the dust can be prevented from entering the suction rod through the opening 122; another configuration to prevent dust from entering the suction rod is to set a dust bag on the separation mechanism in the second box body 12, and the dust from the separation mechanism directly enters the dust bag.

[0048] Optionally, the separation mechanism 14 includes at least one one-way valve 142, which is located at the outlet of the hollow tube 141 and opens or closes as the fan is turned on or off to avoid backflow of dust when the fan stops working.

[0049] This embodiment provides a dry cleaning brush for dry vacuuming carpets and floors. By providing two levels of debris processing containers and providing a filter in each level of processing container, the dust collecting device can effectively filter out large particles of debris in the airflow during operation. This ensures that the gas sucked into the exhaust pipe and the dust collection bucket contains a small amount of dust, thereby increasing the service life of the exhaust pipe and the dust collection bucket.

[0050] Example 2

[0051] According to a specific embodiment of the present invention, in a second aspect, the present invention provides a dust suction device, comprising a control system and any one of the cleaning brushes described above.

[0052] The control system includes a power supply unit, a control circuit, and a fan. When the user turns on the working mode, the control circuit turns on the fan's rotation mode under the drive of the power supply. The fan rotates continuously to generate negative pressure suction, which is transmitted to the cleaning brush head through a hollow connecting rod. The cleaning brush head has an exhaust port, and debris on the ground enters the brush head under the action of the fan. At the same time, the control system controls the roller at the brush head to rotate. For places with more stains on the ground, the stains are cleaned by the rotation of the roller and then sucked into the dust collection bin by the exhaust fan.

[0053] The present invention provides an intelligent vacuum floor brush and a vacuum device, which are provided with two-stage debris processing containers and a filter in each stage of the processing container, so that the vacuum device can effectively filter out large particles of debris in the airflow during operation, thereby ensuring that the gas sucked into the exhaust pipe and the dust collection bucket has a small amount of dust, thereby increasing the service life of the exhaust pipe and the dust collection bucket.

[0054] Example 3

[0055] like Figure 1 As shown, according to a specific embodiment of the present invention, in the third aspect, an embodiment of the present invention provides a wet cleaning brush, such as an intelligent floor scrubbing brush, which is detachably connected to one end of a connecting rod of a vacuum cleaner through a movable connection portion, and the cleaning brush contacts with floors, carpets, etc. for cleaning during use. Specifically, the cleaning brush comprises: a shell 1, a roller brush 2, and an exhaust duct 3, wherein the shell 1 comprises a semi-enclosed space formed by an upper shell and a lower shell. In one embodiment, the upper shell may be a planar structure such as a cover plate, and the lower shell is a U-shaped structure including a bottom plate and a side plate. Of course, the specific structure of the shell 1 is not solely limited, and any shape structure that can be implemented is included within the scope of the present embodiment.

[0056] The housing 1 includes: a first sewage tank 11, located at the front of the housing 1, for storing sewage during the cleaning process; a second tank 12, located at the rear of the housing 1, separated from the first tank 11 by a partition, for storing secondary sewage during the cleaning process. The first sewage tank 11 and the second sewage tank 12 can be used to store large particles of garbage, sewage, etc. The structure of the first sewage tank 11 and the second sewage tank 12 is preferably a rectangular structure, such as Figure 2As shown, it can also be U-shaped or other shapes, which is not limited to this. The first sewage tank 11 and the second sewage tank 12 form an L-shaped structure, which are used for two filtrations and storages respectively. The third box 13 is located below the upper shell of the shell 1 and above the first box 11, and is used to store clean water for washing the floor. Figure 5 As shown, the clean water tank is an irregular flat structure formed by cooperating with the first sewage tank 11, the second sewage tank 12 and the roller brush. For example, the front side is a folded structure formed by multiple sections of plane or curved structures, and the top and back surfaces are parallel to the top and back surfaces of the shell 1.

[0057] The roller brush 2 is located at the front end of the housing 1 and is driven by the motor to clean the floor. The roller brush 2 forms working modes with different speeds under different levels of control. The roller brush 2 preferably has bristles with a fluff and mop structure, and is used to mop the floor under the wetting of clean water.

[0058] The exhaust pipe 3 is connected to the rear end of the shell 1 and communicates with the second box body 12. The exhaust pipe 3 generates negative pressure on the first box body 11 and the second box body 12 under the action of the fan, and sucks the sewage into the first sewage tank 11 and / or the second sewage tank 12 under the action of the fan.

[0059] The handheld host fan provides suction, and the fan evacuates the second sewage tank 12 through the exhaust pipe 3, so that the second sewage tank 12 generates negative pressure. Under the action of negative pressure, the first sewage tank 11 is extracted, and the first sewage tank 11 is pumped into the second sewage tank 12. According to the different properties of sewage and gas, the gas is suspended in the air, and the sewage will fall into the sewage tank under the influence of gravity. At the same time, water and gas are separated through the centrifugal mechanism, and the gas is sucked into the dust cylinder by the suction force and finally discharged outside. The sewage is stored in the second-level sewage tank. The second-level sewage tank and the brush head are designed with a separate structure, which is convenient for disassembly and assembly, cleaning, and garbage disposal.

[0060] Optionally, the third box 13 further includes at least one water spray nozzle 131, which is located at both sides of the front end of the third box 13. The water spray nozzle 131 can be opened or closed manually.

[0061] Optionally, the housing 1 further includes: a separation mechanism 14, located between the first sewage tank 11 and the second sewage tank 12, and used to connect the first sewage tank 11 and the second sewage tank 12. Figure 3As shown, as an optional embodiment, the separation mechanism 14 includes at least one hollow tube 141, and the hollow tube 141 extends upward along the bottom of the second sewage tank 12. The hollow tube can be a circular or square structure, which is not limited. The hollow tube 141 realizes the connection between the first sewage tank 11 and the second sewage tank 12 through the connecting pipe 143, so that the sewage is sucked from the first sewage tank 11 through the connecting pipe 143 and the hollow tube 141 to the second sewage tank 12 by the fan.

[0062] like Figure 4 As shown, a receiving structure 121 is formed in the center of the second sewage tank 12 for receiving the exhaust pipe 3; in one embodiment, the receiving structure 121 is formed into an arched door structure, and of course, it can also be formed into a square or circular structure, which is not limited to this. An opening 122 is provided on the top of the receiving structure 121 for connecting the exhaust pipe 3 and the second sewage tank 12. The opening 122 can be a large opening or a plurality of small openings.

[0063] The height of the opening 122 is higher than the height of the hollow tube extending upward. For example, the hollow tube extends upward to a position 10% lower than the height of the second sewage tank 12, and the opening 122 is arranged at the top of the second sewage tank 12 to prevent sewage from being sucked into the opening and then into the fan. The opening 122 is preferably formed into an upward protruding structure to facilitate gas circulation.

[0064] As an optional embodiment, the housing 1 further includes: a first filter 15, which is detachably disposed on the upper surface of the first sewage tank 11, and is used to filter debris entering the first sewage tank 11. Optionally, the housing 1 further includes: a second filter 16, which is detachably disposed at the opening 122, and is used to filter debris entering the exhaust pipe 3 from the opening 122.

[0065] The first sewage tank 11 mainly collects sewage and garbage under the action of suction, and separates the sewage and garbage through a filter. The garbage is on the filter and the sewage passes through the filter and is discharged to the first-level sewage tank.

[0066] The second sewage tank 12 mainly collects sewage from the first-level sewage tank by suction, so that the sewage will not flow back from the first-level sewage tank to the outside. The separation structure of the second-level sewage tank separates gas and sewage, so that sewage will not enter the main dust cylinder, corrode the main fan and electrical functions, and avoid the problem of dust cylinder dirtiness. Another additional function point is to add a filter to the water nozzle, which can filter the water vapor in the sewage tank and completely achieve the water vapor separation effect. The above principle can realize a multifunctional floor scrubbing brush.

[0067] Optionally, the separation mechanism 14 includes at least one one-way valve 142, which is located at the outlet of the hollow tube 141 and opens or closes as the fan is turned on or off to avoid backflow of sewage when the fan stops working.

[0068] The intelligent floor scrubber provided by the embodiment of the present invention has two-stage sewage treatment containers and a clean water tank, and a filter is arranged in each stage of the treatment container, so that the dust collection device can effectively filter out large particles of debris in the sewage during operation. The gas and liquid are effectively separated and enter the exhaust pipe and the dust collection bucket in a cleaner manner, thereby increasing the service life of the exhaust pipe and the dust collection bucket.

[0069] Example 4

[0070] According to a specific embodiment of the present invention, in a fourth aspect, the present invention provides a vacuum cleaning device, comprising a control system and any cleaning brush as described above.

[0071] The control system includes a power supply unit, a control circuit, and a fan. When the user turns on the working mode, the control circuit turns on the fan's rotation mode under the drive of the power supply. The fan rotates continuously to generate negative pressure suction, which is transmitted to the cleaning brush head through a hollow connecting rod. The cleaning brush head has an exhaust port, and debris on the ground enters the brush head under the action of the fan. At the same time, the control system controls the roller at the brush head to rotate, and opens the water spray port of the clean water tank. After the clean water is sprayed onto the roller or the ground, the ground is wetted and cleaned. Especially for places with more stains on the ground, the stains are cleaned by the rotation of the roller, and the sewage is pumped into the sewage tank through the exhaust fan.

[0072] The cleaning brush and dust collecting device provided by the present invention are provided with two-stage sewage treatment containers, and a filter screen is provided in each stage of the treatment container, so that the dust collecting device can effectively filter out large particles of debris in sewage or air flow during operation. This ensures that the gas sucked into the exhaust pipe and the dust collecting bucket has a small amount of dust, prolongs the service life of the exhaust pipe and the dust collecting bucket, and effectively filters sewage during the clean water cleaning process, making the cleaning efficiency higher.

[0073] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0074] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A cleaning brush, characterized in that: include: The housing (1) comprises: A first sewage tank (11), located at the front of the housing (1), and used for storing sewage during the cleaning process; A second sewage tank (12), located at the rear of the housing (1), separated from the first sewage tank (11) by a partition, and used for storing sewage during the cleaning process; A roller brush (2) is located at the front end of the housing (1) and is driven by a motor to clean the floor; An exhaust pipe (3) connected to the rear end of the housing (1) and communicating with the second sewage tank (12); the exhaust pipe (3) generates negative pressure on the first sewage tank (11) and the second sewage tank (12) under the action of the fan; The housing (1) further comprises: A third box (13), located below the upper shell of the shell (1) and above the first sewage tank (11), and used for storing clean water for washing floors; The third box (13) further comprises at least one water spray nozzle (131), which is located at the front end of the third box (13) and is used to spray clean water onto the roller brush; Also includes: A separation mechanism (14) is connected to the first sewage tank (11) and the second sewage tank (12) and is used to separate sewage entering the second sewage tank (12) from the first sewage tank (11); the separation mechanism comprises at least one hollow tube (141), and the hollow tube (141) extends upward along the bottom of the second sewage tank (12).

2. The cleaning brush according to claim 1, characterized in that: Also includes a first filter (15) is detachably arranged on the upper surface of the first sewage tank (11) and is used to filter debris entering the first sewage tank (11).

3. The cleaning brush according to claim 1, characterized in that: The separation mechanism further comprises a one-way valve located at the top of at least one hollow tube (141).

4. The cleaning brush according to claim 1, 2 or 3, characterized in that: A containing structure (121) is formed in the center of the shell (1) for containing the exhaust pipe (3); an opening (122) is provided at the top of the containing structure (121) for connecting the exhaust pipe (3) with the second sewage tank (12).

5. The cleaning brush according to claim 4, wherein the height of the opening (122) in the second sewage tank (12) is higher than the height of the hollow tube extending upward.

6. The cleaning brush according to claim 5, wherein the housing (1) further comprises: The second filter (16) is detachably arranged at the opening (122) and is used to filter debris entering the exhaust pipe (3) through the opening (122).

7. The cleaning brush according to claim 5 or 6, characterized in that: The housing (1) further comprises: a dust bag (17) which is detachably arranged at the hollow tube (141) and is used to collect debris separated by the separation mechanism (14).

8. A dust collection device, comprising the cleaning brush according to any one of claims 1 to 7.

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