Handheld dust collector with water absorption function

Abstract

The invention relates to the technical field of cleaning equipment, and discloses a handheld dust collector with a water absorption function, a sewage tank and a dust cup main body are combined into a whole, cavities of the sewage tank and the dust cup main body are communicated through a spiral air duct, and solid-liquid-gas mixed dirt firstly enters a dust collection cavity of the dust cup main body in a cyclone form; part of solid dirt enters the sewage tank through the spiral air duct after being separated, gas-liquid separation is achieved in a cyclone filtering mode when the solid dirt passes through the spiral air duct, then the remaining dirt enters the cyclone cone body to achieve gas-solid separation, and it is ensured that only gas is finally exhausted into the external environment. The device not only can clean solid garbage, but also can treat liquid garbage, is small and exquisite in structure and convenient to use, and can easily clean various complex surfaces and corners.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, and in particular to a handheld vacuum cleaner with a water absorption function. Background Art

[0002] A handheld vacuum cleaner is a small, easy-to-operate household cleaning appliance. It uses the principle of air pressure difference to allow the outside air to carry dust, debris and other garbage into the dust box or dust bag through the suction port and pipe. It mainly includes a connector, a main unit and a dust collection part.

[0003] Existing handheld vacuum cleaners are mainly used to clean solid waste. Their internal structure is mainly designed to handle solid dust and small particles of debris. If liquid is sucked in, it may cause damage to the motor and battery, as well as blockage and corrosion of the internal channels. Therefore, most handheld vacuum cleaners cannot be used to clean liquid waste.

[0004] Liquid waste is usually treated by a floor scrubber, but its large body and independently installed sewage tank take up a large space and are costly; based on this, we propose a handheld vacuum cleaner with a water absorption function. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a handheld vacuum cleaner with a water absorption function, so that it can not only clean solid garbage but also process liquid garbage, and it is small in size and can easily clean various complex surfaces and corners.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A handheld vacuum cleaner with a water absorption function comprises a dust cup assembly, wherein the dust cup assembly comprises a dust cup body mounted on a vacuum cleaner body, one end of the dust cup body is connected to a sewage tank, the interior of the dust cup body comprises a dust collecting cavity, and the interior of the sewage tank comprises a sewage cavity; A cyclone cone body is installed in the dust collecting chamber, and the sewage chamber is connected with a vacuum motor arranged in the vacuum cleaner body through the cyclone cone body; a cyclone lower cone is arranged between the dust collecting chamber and the sewage chamber, and the cyclone lower cone is sleeved on the outer side of the cyclone cone body, and the two cooperate to form a spiral air duct that can realize gas-liquid separation, and the two ends of the spiral air duct are respectively connected to the dust collecting chamber and the sewage chamber.

[0007] Optionally, the vacuum cleaner body includes a body, and a channel for connecting the outside and the dust cup assembly is formed on the body, and the channel and the axis of the dust cup assembly are perpendicular, parallel or coincident with each other.

[0008] Optionally, the vacuum motor is installed in the fuselage, and the dust cup assembly is detachably installed on the fuselage.

[0009] Optionally, the sewage tank can be detachably mounted on the dust cup body, the two are connected by a first lock, and the dust cup assembly is mounted on the body by a second lock.

[0010] Optionally, an inlet is provided on the dust cup body, and the dust collecting chamber is connected with the channel through the inlet.

[0011] Optionally, a backflow baffle is provided in the channel to control its on-off state through unidirectional swing.

[0012] Optionally, an inner cavity for connecting the vacuum motor and the sewage chamber is opened inside the cyclone cone body, a third filter component is arranged between the inner cavity and the vacuum motor, a first filter component is arranged in the inner cavity, and a second filter component is arranged on the side of the first filter component close to the sewage chamber.

[0013] Optionally, a bracket connected to the cyclone lower cone and capable of being disassembled is provided in the sewage chamber, a buoyancy chamber is provided on the inner side of the bracket, and a slot and a through hole are also provided on the bracket; The buoyancy chamber is communicated with the inner chamber and the sewage chamber through a through hole and a slot respectively, and a float capable of floating and blocking the through hole in the axial direction is installed inside the buoyancy chamber.

[0014] Optionally, the first filter assembly includes a filter element for connecting the inner cavity and the third filter assembly, and the filter element is made of alloy sintered material.

[0015] Optionally, sealing rings are provided between the cyclone lower cone, the dust cup body and the sewage tank.

[0016] Beneficial Effects

[0017] (1) The present invention integrates the sewage tank and the dust cup body into one, and the cavities of the two are connected by a spiral air duct. The solid-liquid-gas mixed dirt first enters the dust collecting cavity of the dust cup body in the form of a cyclone, and then some of the solid dirt is separated and enters the sewage tank through the spiral air duct. When passing through the spiral air duct, the gas-liquid separation is achieved by cyclone filtration. Then the remaining dirt enters the cyclone cone body to achieve gas-solid separation, so as to ensure that only gas is discharged into the external environment in the end. The device can clean up both solid garbage and liquid garbage, and has a compact structure and is easy to use. It can easily clean various complex surfaces and corners.

[0018] (2) For the above-mentioned sewage tank, the buoyancy chamber is connected to the sewage chamber. When the liquid inside exceeds a certain threshold, the float will float up due to buoyancy to block the through hole, thereby preventing the liquid from entering the cyclone cone and being sucked into the motor.

[0019] (3) With respect to the above-mentioned sewage tank, the bracket and the cyclone lower cone are detachable. When cleaning solid waste, the bracket can be removed to increase the storage space in the sewage tank, thereby improving the dirt storage capacity of the vacuum cleaner.

[0020] (4) In the present invention, the sewage tank and the dust cup body can be removed from the vacuum cleaner body together by the second lock buckle, and the sewage tank can be removed from the dust cup body by the first lock buckle, so that the dust cup body and the sewage tank can be cleaned separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a handheld vacuum cleaner with a water absorption function according to an embodiment of the present invention; Figure 2 is a schematic diagram of the internal structure of a handheld vacuum cleaner with a water absorption function according to an embodiment of the present invention; Figure 3 is a schematic diagram of the internal structure of a dust cup assembly in an embodiment of the present invention; Figure 4 is a schematic diagram of the exploded structure of the dust cup assembly in an embodiment of the present invention; Figure 5 is a schematic diagram of the internal structure of the handheld vacuum cleaner after the bracket and the float are removed according to an embodiment of the present invention; Figure 6 is a schematic diagram of the position structure of the reflux baffle and the channel in an embodiment of the present invention; Among them, 1. Vacuum cleaner body; 11. Body; 12. Vacuum motor; 13. Handle; 14. Battery pack; 15. Connector; 2. Dust cup body; 21. Inlet; 3. Sewage tank; 4. First lock buckle; 5. Second lock buckle; 6. Cyclone cone body; 61. First filter assembly; 7. Cyclone lower cone; 71. Second filter assembly; 72. Bracket; 73. Float; 8. Third filter assembly; 9. Backflow baffle. DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] Embodiment 1

[0024] like Figure 1-Figure 4 , Figure 6As shown, a handheld vacuum cleaner with a water absorption function includes a vacuum cleaner body 1 and a dust cup assembly installed on the vacuum cleaner body 1, the two are interconnected, and the vacuum cleaner body 1 can generate vacuum suction; under the action of the suction, external dirt (including solid garbage and liquid garbage) enters the dust cup assembly together with the air, and after separation is completed in the dust cup assembly, the solid and liquid garbage are retained in the dust cup assembly, and the air is discharged and returned to the external environment again.

[0025] The vacuum cleaner body 1 includes a body 11, a vacuum motor 12, a handle 13, a battery pack 14 and a connector 15. The vacuum motor 12 is installed inside the body 11 and can generate vacuum suction. The handle 13 and the battery pack 14 are both installed on the body 11, and a channel connecting to the outside world is opened on the body 11, and the connector 15 is installed at the end of the channel. Different suction heads can be installed on the connector 15 for different cleaning scenes to adapt to the current required scenes.

[0026] The dust cup assembly and the body 11 are connected in a detachable manner, the battery pack 14 is used to provide power to the vacuum motor 12, the handle 13 is used to facilitate the user to hold the device, and external dirt and air enter the dust cup assembly along the channel through the connector 15, and the body 11 is provided with an exhaust hole corresponding to the position of the vacuum motor 12 to facilitate the vacuum motor 12 to discharge the filtered clean air.

[0027] The dust cup assembly includes a dust cup body 2 and a sewage tank 3, which are coaxially distributed; the dust cup body 2 has a dust collecting chamber inside, the sewage tank 3 has a sewage chamber inside, and the dust cup body 2 is provided with an inlet 21 connected to the channel, that is, the dust collecting chamber is connected to the outside world through the inlet 21, the channel and the joint 15.

[0028] Among them, a reflux baffle 9 is provided in the channel, which controls its on and off by unidirectional swing; the reflux baffle 9 can be made of soft materials such as rubber, and use its own elastic deformation ability to achieve unidirectional swing reset, or a hard baffle can be used, which is installed in the channel through a torsion spring and a rotating shaft; when the vacuum motor 12 is working, the reflux baffle 9 swings to one side of the dust cup assembly under the action of the air pressure difference on both sides, so that the channel is in a conductive state; when the vacuum motor 12 is turned off, the reflux baffle 9 is reset to close the channel, thereby avoiding the backflow of sewage remaining in the pipeline, and also preventing the sewage in the sewage tank 3 from being accidentally poured out.

[0029] The dust cup body 2 is installed on the body 11 of the vacuum cleaner body 1, and the sewage tank 3 is installed at the end of the dust cup body 2 opposite to the vacuum motor 12. A cyclone cone body 6 is installed in the dust collecting chamber. The interior of the cyclone cone body 6 has an inner cavity connected to the vacuum motor 12, and one end of the cyclone cone body 6 extends into the sewage cavity, and the sewage cavity is connected to the inner cavity, that is, the sewage cavity is connected to the vacuum motor 12 of the vacuum cleaner body 1 through the inner cavity of the cyclone cone body 6.

[0030] A cyclone lower cone 7 is arranged between the dust collecting chamber and the sewage chamber. The cyclone lower cone 7 is sleeved on the outer side of the cyclone cone main body 6. The two cooperate to form a spiral air duct. The spiral air duct is a spiral structure distributed around the axis of the dust cup assembly. The dust collecting chamber and the sewage chamber are connected through the spiral air duct, and the mixed dirt and air can be separated through the spiral air duct.

[0031] Specifically, the dust collecting chamber and the sewage chamber are divided into two independent chambers by the cyclone lower cone 7. Under the suction generated by the vacuum motor 12, external dirt enters the joint 15 together with the air, passes through the inlet 21 along the channel and enters the dust collecting chamber in the form of a cyclone; under the action of centrifugal force, some solid waste with larger mass will be separated in the dust collecting chamber, and solid waste with smaller mass and gas-liquid mixture will enter the sewage chamber through the spiral air duct. Based on the spiral structure of the spiral air duct, cyclone filtration is used to achieve gas-liquid separation and further solid separation, and then the remaining dirt enters the cyclone cone body 6 to achieve gas-solid separation, ensuring that only gas can be discharged into the external environment again through the exhaust hole.

[0032] In order to prevent the sewage entering the sewage tank 3 from overflowing and ensure the sealing between the sewage chamber and the dust collecting chamber, so that the two are connected only by a spiral air duct, sealing rings are provided between the cyclone lower cone 7 and the dust cup body 2 and the sewage tank 3.

[0033] As mentioned above, a third filter component 8 is arranged between the inner cavity and the vacuum motor 12, a first filter component 61 is arranged in the inner cavity, and a second filter component 71 is arranged on the side of the first filter component 61 close to the sewage cavity, so that the device can perform three-stage filtration on the dirt after completing the gas-liquid separation to ensure the cleaning effect.

[0034] After the gas-liquid separation is completed by the special cyclone filtration system, a small amount of solid waste still moves with the airflow; the second filter component 71 uses a metal filter mesh to connect the inner cavity and the sewage cavity. Its function is to completely intercept the solid particles in the sewage cavity and prevent them from entering the inner cavity.

[0035] The first filter component 61 includes a filter element, which is used to connect the inner cavity and the third filter component 8; after being filtered by the second filter component 71, the water vapor and finer solid particles contained in the airflow will be intercepted by the first filter component 61; the filter element is made of alloy sintered material, such as copper sintered, stainless steel sintered filter mesh, etc. The filter element made by alloy sintering technology has the excellent property of passing air but not water, that is, the first filter component 61 made of alloy sintered material can ensure that the airflow passing through the third filter component 8 does not contain any moisture, further ensuring the safety of components such as motors.

[0036] Among them, alloy sintering is an important material preparation technology. It is a process in which alloy powder (or mixed metal powder) is heated at a temperature lower than the melting point of the main component to form a metallurgical bond between the powder particles through physical and chemical processes such as diffusion, flow, and reaction, thereby obtaining an alloy material with a certain shape, performance, and density. This process mainly relies on the diffusion movement of atoms on the surface of powder particles. At high temperatures, atoms obtain enough energy to cross the interface between particles, so that the connection between the particles is gradually strengthened, and finally a whole sintered body is formed.

[0037] The third filter component 8 is located at the end of the dust cup body 2 opposite to the sewage tank 3, that is, it is located between the cyclone cone body 6 and the vacuum motor 12, and is connected to the vacuum motor 12; the third filter component 8 can adopt the existing filter cotton component or HEPA component, and the tiny solid particles that cannot be intercepted by the first filter component 61 and the second filter component 71 are filtered and intercepted three times by the third filter component 8, so as to completely prevent the tiny solid particles from entering the vacuum motor 12 and causing damage to it.

[0038] Embodiment 2

[0039] On the basis of the first embodiment, in order to prevent the liquid from entering the cyclone cone and being sucked into the motor, a detachable bracket 72 and a float 73 are further provided in the sewage chamber.

[0040] like Figure 2-Figure 4 As shown, a bracket 72 connected to the cyclone lower cone 7 and capable of being disassembled is provided in the sewage chamber, a buoyancy chamber is provided on the inner side of the bracket 72, and a slot and a through hole are also provided on the bracket 72; the buoyancy chamber is connected to the inner chamber and the sewage chamber through the through hole and the slot respectively, and a float 73 capable of floating axially and sealing the through hole is installed inside the buoyancy chamber.

[0041] The buoyancy chamber is connected to the sewage chamber. When the liquid inside the sewage tank 3 exceeds a certain threshold, the float 73 will float up due to buoyancy, thereby blocking the through hole. At the same time, the motor program recognizes the hole blocking protection, and the motor is powered off and stops working to prevent liquid from entering the cyclone cone body 6 and being sucked into the motor.

[0042] As mentioned above, the float 73 is located on the inner side of the lower part of the bracket 72, and the upper part of the bracket 72 is mounted on the outer side of the cyclone lower cone 7, and a spiral air duct is also formed between the two, and is connected to the spiral air duct formed between the cyclone lower cone 7 and the cyclone cone body 6, further enhancing the gas-liquid separation effect.

[0043] When the sewage tank 3 is installed on the dust cup body 2, the bottom of the bracket 72 abuts against the bottom surface of the sewage chamber, the through hole on the bracket 72 is connected to the end of the cyclone cone body 6, and the corresponding parts are connected by snap connection.

[0044] In order not to affect the installation of the bracket 72 and the float 73 and ensure the filtering effect of the second filter assembly 71, the second filter assembly 71 is installed upside down in the inner cavity, that is, the second filter assembly 71 protrudes toward the inner cavity.

[0045] like Figure 5 As shown, for cleaning liquid dirt, the dust cup assembly equipped with the bracket 72 and the float 73 can realize the water full protection function to avoid damage to the internal electrical components. When cleaning solid garbage, the bracket 72 can be removed to increase the storage space in the sewage tank 3 and improve the dirt storage capacity of the vacuum cleaner.

[0046] In addition, the cleaning of solid dirt can also be achieved by replacing the ordinary dust cup assembly and installing it on the vacuum cleaner body 1; similarly, the cleaning of solid dirt can also be achieved by replacing the dust cup filter of ordinary structure and installing it in the dust cup body 2 and the sewage tank 3.

[0047] Embodiment 3

[0048] On the basis of the first and second embodiments, in order to facilitate the cleaning of the dust cup assembly, the present invention further proposes a connection structure between the dust cup assembly and the vacuum cleaner body 1 and between the sewage tank 3 and the dust cup body 2.

[0049] like Figure 1-Figure 5 As shown, the sewage tank 3 can be detachably mounted on the dust cup body 2, the two are connected by a first lock buckle 4, and the dust cup assembly is mounted on the fuselage 11 by a second lock buckle 5.

[0050] As mentioned above, a detachable connection structure is adopted between the dust cup assembly and the vacuum cleaner body 1. When the sewage tank 3 and the dust cup body 2 are connected as one, the dust cup assembly and the vacuum cleaner body 1 can be quickly disassembled and assembled through the second lock buckle 5.

[0051] The sewage tank 3 and the dust cup body 2 also adopt a detachable connection structure, and the end of the dust cup body 2 is embedded in the cyclone lower cone 7, and the cyclone lower cone 7 is embedded in the sewage tank 3, and a first lock 4 is provided on the outer circumferential surface of the sewage tank 3 and the dust cup body 2; when the dust cup assembly is removed from the vacuum cleaner body 1, it is only necessary to press the first lock 4 to separate the sewage tank 3 and the dust cup body 2, so that the two can be cleaned separately, which is simple and convenient. Among them, the first lock 4 and the second lock 5 both adopt the existing lock structure, which is used to realize the quick connection, fixation and separation between the two components. Since it is a prior art, it will not be described in detail here.

[0052] Embodiment 4

[0053] On the basis of Embodiments 1 to 3, the dust cup assembly proposed in the present invention can be adapted to vacuum cleaner bodies 1 of different shapes, such as handheld vacuum cleaners of straight, gun, cylindrical, flat, and combined structures.

[0054] like Figure 1 As shown, the axis of the channel and the dust cup assembly are parallel to each other, and the second lock buckle 5 is set at the bottom of the outer side of the sewage tank 3, and is connected to the joint 15 of the vacuum cleaner body 1 through the second lock buckle 5. When the dust cup assembly is installed, the end close to the dust cup body 2 is embedded in the machine body 11, and the end close to the sewage tank 3 is connected and disassembled with the joint 15 through the second lock buckle 5; that is, when disassembling the dust cup assembly, it is only necessary to press the second lock buckle 5 to disengage the sewage tank 3 from the joint 15, and the dust cup body 2 and the sewage tank 3 can be removed from the vacuum cleaner body 1 as a whole.

[0055] When the vacuum cleaner has a gun-shaped structure and the axis of the channel and the dust cup assembly are perpendicular to each other, the second lock buckle 5 can be set on the dust cup body 2 at the end opposite to the sewage tank 3, and the first lock buckle 4 is still set on the side of the sewage tank 3 and the dust cup body 2.

[0056] In addition, when the vacuum cleaner is a straight-cylindrical structure, the channel coincides with the axis of the dust cup assembly.

[0057] In summary, the handheld vacuum cleaner with water absorption function proposed in the present invention uses a vacuum motor 12 to generate negative pressure, and performs gas-liquid separation through a special cyclone filtration system to realize the water absorption function of the handheld machine, and the sewage tank 3 and the dust cup body 2 are integrated into one, and the sewage tank 3 and the dust cup body 2 can be disassembled separately, and the user can clean them separately, which is very convenient.

[0058] Compared with ordinary handheld vacuum cleaners, this product has the function of cleaning solid waste and can also handle liquid waste; and compared with existing floor scrubbers, it does not have a large body 11 and an independently arranged sewage tank 3, and has a sophisticated structure and is more convenient to use.

[0059] In addition, the main body of this product is still a handheld vacuum cleaner, which can be used as a dry handheld vacuum cleaner after replacing a conventional dry dust cup assembly and a conventional cyclone filter system; solid dirt can also be cleaned by replacing a dust cup filter of a common structure and installing it in the dust cup body 2 and the sewage tank 3. After replacing two different sets of accessories, a vacuum cleaner can be used in dry / wet scenarios.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0062] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A handheld vacuum cleaner with a water absorption function, comprising a dust cup assembly, characterized in that: The dust cup assembly comprises a dust cup body (2) mounted on a vacuum cleaner body (1); one end of the dust cup body (2) is connected to a sewage tank (3); the dust cup body (2) has a dust collecting cavity inside, and the sewage tank (3) has a sewage cavity inside; A cyclone cone body (6) is installed in the dust collecting chamber, and the sewage chamber is connected to a vacuum motor (12) arranged in the vacuum cleaner body (1) through the cyclone cone body (6); a cyclone lower cone (7) is arranged between the dust collecting chamber and the sewage chamber, and the cyclone lower cone (7) is sleeved on the outer side of the cyclone cone body (6), and the two cooperate to form a spiral air duct capable of achieving gas-liquid separation, and the two ends of the spiral air duct are respectively connected to the dust collecting chamber and the sewage chamber.

2. The handheld vacuum cleaner with water absorption function according to claim 1, characterized in that: The vacuum cleaner body (1) comprises a body (11), the body (11) being provided with a channel for connecting the outside world and the dust cup assembly, and the axis of the channel and the axis of the dust cup assembly are perpendicular, parallel or coincident with each other.

3. The handheld vacuum cleaner with water absorption function according to claim 2, characterized in that: The vacuum motor (12) is installed in the machine body (11), and the dust cup assembly is detachably installed on the machine body (11).

4. The handheld vacuum cleaner with water absorption function according to claim 3, characterized in that: The sewage tank (3) is detachably mounted on the dust cup main body (2), the two are connected via a first lock buckle (4), and the dust cup assembly is mounted on the machine body (11) via a second lock buckle (5).

5. The handheld vacuum cleaner with water absorption function according to claim 2, characterized in that: An inlet (21) is provided on the dust cup body (2), and the dust collecting chamber is connected to the channel through the inlet (21).

6. The handheld vacuum cleaner with water absorption function according to claim 2, characterized in that: A reflux baffle (9) is arranged in the channel and controls its on and off by unidirectional swinging.

7. The handheld vacuum cleaner with water absorption function according to claim 1, characterized in that: An inner cavity for connecting the vacuum motor (12) and the sewage chamber is provided inside the cyclone cone body (6); a third filter assembly (8) is provided between the inner cavity and the vacuum motor (12); a first filter assembly (61) is provided in the inner cavity; and a second filter assembly (71) is provided on a side of the first filter assembly (61) close to the sewage chamber.

8. The handheld vacuum cleaner with water absorption function according to claim 7, characterized in that: A detachable bracket (72) connected to the cyclone lower cone (7) is provided in the sewage chamber, a buoyancy chamber is provided on the inner side of the bracket (72), and a slotted hole and a through hole are also provided on the bracket (72); The buoyancy chamber is connected to the inner chamber and the sewage chamber respectively through a through hole and a slotted hole, and a float (73) capable of floating in the axial direction and blocking the through hole is installed inside the buoyancy chamber.

9. The handheld vacuum cleaner with water absorption function according to claim 7, characterized in that: The first filter assembly (61) comprises a filter element for connecting the inner cavity and the third filter assembly (8), and the filter element is made of alloy sintered material.

10. The handheld vacuum cleaner with water absorption function according to any one of claims 1 to 9, characterized in that: Sealing rings are provided between the cyclone lower cone (7), the dust cup body (2) and the sewage tank (3).

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