Fan blade assembly for dust removal equipment and portable dust removal equipment

Abstract

The embodiment of the utility model relates to the technical field of cleaning appliances, and particularly discloses a fan blade assembly for dust removal equipment and portable dust removal equipment, the dust removal equipment comprises a handheld mini shell, a cavity is arranged in the shell, and a dust suction port communicated with the outside is arranged at one end of the cavity; the fan blade assembly comprises a base plate and centrifugal blades, the base plate is contained in the cavity, and the centrifugal blades are fixed to the side, facing the dust suction opening, of the base plate. Wherein the base plate and the shell are coaxially arranged, and the base plate is of a conical structure in a conical side wall shape and used for increasing the installation area of the centrifugal blades on the base plate, so that when airflow carrying dust particles is sucked into the cavity from the dust suction opening, the contact area of the centrifugal blades and the airflow is increased. According to the utility model, the chassis of the fan blade assembly is reasonably designed to be in the shape of the conical side wall, so that a larger mounting area can be provided for the centrifugal blades, the contact area between the centrifugal blades and airflow is effectively increased, and the cleaning effect of the dust removal equipment is enhanced.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of cleaning appliances, in particular to a fan blade assembly for dust removal equipment and portable dust removal equipment. BACKGROUND

[0002] A dust collector is a cleaning equipment widely used in human life and industrial production. The working principle of the dust collector is to use a driving motor to drive a blade to rotate at high speed, generate a powerful airflow in a sealed shell, form a negative pressure, and thus attract air and dust and pollutants carried by the air into the dust collector.

[0003] The existing dust collector usually uses a fan blade to generate an airflow to absorb dust particles in the air. However, some conventional fan blade structures have deficiencies in the area and efficiency of contact with the airflow, resulting in an unsatisfactory final dust removal effect. Therefore, under the background of the increasing demand for portable and small dust collectors in the market, it is crucial to develop a fan blade assembly with high energy efficiency and convenient assembly to improve the cleaning efficiency of the dust collector. SUMMARY

[0004] Therefore, it is necessary to provide a fan blade assembly for dust removal equipment and a portable dust removal equipment capable of improving the convenience and dust removal cleaning effect.

[0005] The embodiment of the present application provides a fan blade assembly for dust removal equipment, which comprises a hand-held mini shell, a cavity in the shell, and a dust suction port communicating with the outside at one end of the cavity.

[0006] A bottom disc is accommodated in the cavity.

[0007] Centrifugal blades are fixed to one side of the bottom disc facing the dust suction port in a circumferential array.

[0008] The bottom disc is coaxially arranged with the shell, and the bottom disc is a conical structure with a conical side wall for increasing the mounting area of the centrifugal blades on the bottom disc to increase the contact area of the centrifugal blades and the airflow carrying dust particles when the airflow carrying dust particles is sucked into the cavity from the dust suction port.

[0009] In one embodiment, the included angle between the conical side wall of the bottom disc and the axis of the bottom disc is 15° to 75°.

[0010] In one of the embodiments, the centrifugal blade is arranged with a preset angle in the axis direction of the base plate, so as to increase the contact area between the centrifugal blade and the airflow without changing the projection area of the base plate in the axis direction.

[0011] In one of the embodiments, at least two reinforcing ribs are arranged on the side of the base plate away from the centrifugal blade in the axis direction of the base plate, so as to increase the strength of the base plate.

[0012] In one of the embodiments, the dust removal device further comprises:

[0013] A wind pressure motor is fixed in the cavity, and an output shaft of the wind pressure motor is used to sleeve the base plate;

[0014] The output shaft is used to drive the base plate to rotate, so as to synchronously drive the centrifugal blade to rotate, thereby generating wind pressure in the cavity, and the wind pressure is used to suck the airflow carrying dust particles into the cavity from the dust suction port.

[0015] In one of the embodiments, an assembly hole is arranged at the center of the cone of the base plate, and a mounting bevel is arranged on the side of the assembly hole close to the wind pressure motor;

[0016] The assembly hole is used to extend the end of the output shaft, so that the base plate sleeves the end of the output shaft, and the mounting bevel is used to enlarge the mounting area of the base plate when the base plate sleeves the output shaft.

[0017] In one of the embodiments, the shell comprises a first shell and a second shell which are detachable, and the first shell and the second shell jointly enclose the cavity;

[0018] The part of the cavity in the first shell is divided into a dust cavity, and the part of the cavity in the second shell is divided into a mounting cavity;

[0019] The dust suction port is arranged at the end of the dust cavity away from the mounting cavity, and the fan blade assembly is fixed in the mounting cavity.

[0020] In one of the embodiments, the dust removal device further comprises:

[0021] A mounting member is fixed in the mounting cavity, and is used to cover and fix the wind pressure motor;

[0022] The mounting member is provided with an opening on the side of the output shaft of the wind pressure motor close to the dust suction port, and the opening is used to extend the end of the output shaft, so that the base plate sleeves the end of the output shaft.

[0023] In one of the embodiments, the mounting member is a cylindrical structure, and an airflow channel is formed in the inner wall of the cylinder of the mounting member, and a dust collecting sheet is arranged on the inner wall of the cylinder, which is used to adsorb dust particles carried by the airflow flowing through the airflow channel.

[0024] The embodiments of the present application also provide a portable dust collecting device, which comprises the above-mentioned blade assembly for increasing the contact area between the centrifugal blades of the blade assembly and the airflow when the airflow carrying dust particles is sucked into the cavity from the dust suction port.

[0025] The blade assembly for the dust collecting device and the portable dust collecting device described above, on the one hand, the blade assembly is accommodated in the cavity by a hand-held mini shell, which greatly reduces the actual volume of the dust collecting device, so that the device is easy to carry and suitable for cleaning needs in various occasions, thereby improving the portability and operability of the dust collecting device; on the other hand, by means different from the prior art, the present scheme reasonably designs the bottom disc as a conical side wall, which can increase the actual surface area on the same projection area to provide a larger installation area for the centrifugal blades, thereby effectively increasing the contact area between the centrifugal blades and the airflow, so that the centrifugal blades can generate stronger airflow guidance, thereby improving the dust collecting effect and enhancing the cleaning effect of the dust collecting device.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0028] Figure 1 is a perspective view of a portable dust collecting device according to an exemplary embodiment;

[0029] Figure 2 is a cross-sectional view of a portable dust collecting device according to an exemplary embodiment;

[0030] Figure 3 is a perspective view of a blade assembly according to an exemplary embodiment;

[0031] Figure 4 is a side elevation view of a blade assembly according to an exemplary embodiment;

[0032] Figure 5 is a low-face view schematic diagram of a blade assembly according to an exemplary embodiment;

[0033] Figure 6 is Figure 2 is an enlarged schematic diagram at G in the middle;

[0034] Figure 7 is a front cutaway schematic diagram of a wind pressure motor according to an exemplary embodiment;

[0035] Figure 8 is a front view schematic diagram of a mounting according to an exemplary embodiment;

[0036] Figure 9 is a perspective schematic diagram of a portable dust removal device according to another exemplary embodiment;

[0037] Figure 10 is a cutaway schematic diagram of a portable dust removal device according to another exemplary embodiment.

[0038] In the drawings, reference numerals: 10, dust removal device; 100, shell; 101, cavity; 101a, dust cavity; 101b, mounting cavity; 102, dust suction port; 103, air outlet; 20, portable dust removal device; 200, blade assembly; 210, chassis; 211, assembly hole; 212, mounting bevel; 220, centrifugal blade; 230, reinforcing rib; 300, wind pressure motor; 310, output shaft; 320, metal support; 330, bearing set; 340, rotor set; 350, stator set; 360, motor drive board; 400, mounting; 401, opening; 402, containing cavity; 403, dust collection sheet; 410, mounting seat; 420, connecting element; 430, mounting cylinder; 910, cleaning accessory; 920, filter assembly; 930, power supply assembly; 940, cover assembly; 950, driving source. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, for convenience of description, only parts related to the present application are shown in the drawings, not all structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a potentially infinite number of embodiments that serve the same or similar purpose or functions. Accordingly, the phrase "in one embodiment" as used herein does not necessarily refer to the same embodiment, though it may.

[0041] The term "and / or", within the scope of the present application, refers to any and all combinations of one or more of the associated listed items. It will also be understood that the term "comprises / comprising" when used in this specification, specifies the presence of stated features, integers, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, elements, components, and / or groups thereof that are not expressly stated.

[0042] In addition, although the terms "first", "second", etc. are used herein to describe various elements, etc., these elements should not be limited by these terms. These terms are only used to distinguish one element from another element, and are not used to describe a particular order. For example, a first housing can be referred to as a second housing, and a second housing can also be referred to as a first housing, as long as the scope of the two is different, without departing from the scope of the present application. The first housing and the second housing are both housings of related accessories of the portable dust removal equipment, but they are not accessories housings of the same structure design.

[0043] To explain the technical content, technical steps, purposes and effects of the present application in detail, the following will be described in detail in conjunction with the embodiments and the accompanying drawings.

[0044] With the continuous upgrading of the functions of portable cleaning equipment, the wind blade assembly as an important part of the cleaning equipment directly affects the cleaning efficiency of the equipment. How to ensure the small size of the equipment while realizing strong wind pressure and efficient gas flow has become a big challenge in design. The present application provides a wind blade assembly for dust removal equipment 10, which can increase the contact area of the centrifugal blade and the airflow by a unique bottom plate design, thereby improving the flow guiding effect.

[0045] The utility model provides a kind of wind blade assembly 200 for dust removal equipment 10, please refer to Figures 1 to 5The dust removal device 10 comprises a hand-held mini shell 100, a cavity 101 inside the shell 100, and a dust suction port 102 communicating with the outside at one end of the cavity 101. The fan blade assembly 200 comprises a bottom disc 210 and centrifugal blades 220, wherein the bottom disc 210 is accommodated in the cavity 101, and the centrifugal blades 220 are fixed to the side of the bottom disc 210 facing the dust suction port 102 in a circumferential array.

[0046] In an embodiment, the bottom disc 210 is coaxially arranged with the shell 100, and the bottom disc 210 is a conical structure with a conical side wall, for increasing the mounting area of the centrifugal blades 220 on the bottom disc 210, so as to increase the contact area of the centrifugal blades 220 with the airflow carrying dust particles when the airflow is sucked into the cavity 101 from the dust suction port 102.

[0047] Specifically, for the shell 100, please continue to refer to Figure 1 and Figure 2 The shell 100 of the dust removal device 10 is a humanized hand-held mini shell, which is carefully designed in structure to be small in size and convenient to carry. The shell 100 is internally provided with a cavity 101 for cleaning, which constitutes the basic framework of the dust removal device.

[0048] In some embodiments, as shown in Figure 1 The shape of the dust removal device is mainly presented by the shell 100, and the shape of the shell 100 can be an elongated cylindrical shell structure for the convenience of user holding. The size of the shell 100 is also more miniaturized compared with existing dust removal devices, with a diameter of about 2.5 cm and a length of about 15 cm, i.e. the shape and size of the dust removal device are slightly close to a pen, thereby facilitating user holding and use of such a cleaning precision small device.

[0049] In some embodiments, as shown in Figure 2 The shell 100 is a hollow structure, i.e. the shell 100 is internally provided with a cavity 101, and the cavity 101 is provided with a dust suction port 102 communicating with the outside at one end and an air outlet 103 communicating with the outside at the other end, wherein the dust suction port 102 is close to the surface to be cleaned for sucking the swept garbage on the surface to be cleaned, and the air outlet 103 is used to ensure smooth airflow to discharge the filtered air, thereby improving the overall cleaning efficiency of the device. At the same time, the mini design of the cavity 101 ensures the flexibility of the device in use.

[0050] In some embodiments, the dust suction port 102 and the air outlet 103 are respectively arranged at the two ends of the shell 100, the cross-sectional shape of the dust suction port 102 and the air outlet 103 is circular, and the axes of the dust suction port 102, the air outlet 103 and the cavity 101 are coaxial.

[0051] In the embodiments of the present application, the cross-section of the cavity 101 and the dust suction port 102 and the air outlet 103 is circular to ensure uniform suction force and consistent outer dimensions, without using angles to distinguish, and in addition, the wall thickness of the shell 100 is consistent, thereby ensuring the overall strength of the shell 100. In some embodiments, the cross-sectional shape of the cavity 101 can be oval or polygonal, and the cross-sectional shape of the dust suction port 102 and the air outlet 103 can be waist-shaped or rectangular polygonal, and the positions of the dust suction port 102 and the air outlet 103 can be offset from the axis of the cavity 101.

[0052] The specific shape and size of the shell 100 only need to meet the convenience of user holding and miniaturization compared with existing devices, and the present application does not make specific limitations thereon. For example, in other embodiments, the shell 100 can be a shell structure with an oval cross-section, or a relatively short and thick shape with a large diameter, and the specific size can also be other numerical values.

[0053] In the embodiments of the present application, the axis of the shell 100 is the central axis direction of the cylindrical shell 100, and the airflow direction of the fan blade assembly 200 for the dust removal device when working is parallel to the axis direction. In other embodiments, when the shell 100 is not cylindrical, the axis of the shell 100 is the extension direction of the main body structure, and the airflow direction is parallel to the axis direction.

[0054] For the fan blade assembly 200, the fan blade assembly 200 is an indispensable component in the dust removal device 10, responsible for pushing air and generating suction force, and is a key factor to achieve efficient cleaning. Through its design and movement, the fan blade assembly 200 can effectively suck in and handle dust and dirt in the surrounding environment.

[0055] Among them, the fan blade assembly 200 is generally designed in a fan shape or a spiral shape to increase the surface area, thereby effectively pushing the air flow. The fan blade assembly 200 is generally made of lightweight and strong materials such as plastic or metal alloy to ensure good durability when rotating at high speed.

[0056] In some embodiments, through the high-speed rotation of the wind pressure motor 300, the fan blade assembly 200 can rotate synchronously and cause the internal air pressure to decrease, thereby generating a negative pressure effect. The negative pressure generated by the fan blade assembly 200 can effectively suck in the surrounding air and accelerate these air, forming a strong air flow, thereby attracting external air and the dust, particles and impurities carried thereby into the dust removal device 10. In some advanced designs, the fan blade assembly 200 can also help separate fine dust and particles, so that they can be effectively collected or filtered.

[0057] Further, the fan blade assembly 200 comprises a base plate 210 and centrifugal blades 220, wherein the base plate 210 is accommodated in the cavity 101, the centrifugal blades 220 are fixed on the base plate 210 and located on the side of the base plate 210 facing the dust suction port 102, the base plate 210 is coaxial with the axis of the shell 100, i.e. the base plate 210 is coaxially arranged with the shell 100, and the base plate 210 is in the form of a conical structure with a conical side wall.

[0058] In some embodiments, referring to Figure 3 and Figure 4 For the above-mentioned base plate 210, the base plate 210 can be in the form of a convex structure such as a spherical surface, an arc surface, a conical surface, etc., so as to increase the installation area of the centrifugal blades 220 on the base plate 210 without changing the projection area of the base plate 210 on the axis.

[0059] In the case of the base plate 210 in the form of a conical structure with a conical side wall, the included angle between the conical side wall and the axis thereof can be between 15° and 75°, for example, 15°, 23°, 35°, 45° and 75°, etc., which is not specifically limited herein.

[0060] In some embodiments, the axis mentioned for the purpose of orientation refers to the central axis of the conical body of the conical side wall of the base plate 210, which is not specifically limited herein. In the embodiments of the present application, the base plate 210 is coaxially arranged with the shell 100, i.e. the axis of the base plate 210 is also the axis of the shell 100.

[0061] The conical structure of the base plate 210 not only has an attractive appearance, but also has important advantages in function. Through optimization design, the actual surface area of the base plate 210 is effectively increased compared with the projection area thereof. Such a shape can maximize the installation area of the blades and create conditions for the arrangement of more blades, so that the blades can be arranged more densely, thereby significantly increasing the contact area of the centrifugal blades 220 with the airflow. Under the same space limitation, the friction and pushing effect can be increased to improve the strength of the air pressure, thereby effectively meeting the high demand of the portable dust removal device 10 in the cleaning process.

[0062] In other embodiments, the projection of the base plate 210 on the axis can also be in the form of an ellipse or a polygon, and the base plate 210 can also be in the form of a flat plate structure without inclination or convexity on the axis, or the base plate 210 can be directly in the form of a solid conical or spherical structure without considering the weight, which is not specifically limited herein.

[0063] In some embodiments, referring to Figure 4 andFigure 5 In the axial direction of the base plate 210, the centrifugal blades 220 are inclinedly arranged with a preset angle a towards the outside of the base plate 210, so as to increase the contact area of the centrifugal blades 220 with the airflow without changing the projection area of the base plate 210 in the axial direction.

[0064] Specifically, in order to reduce the weight of the centrifugal blades 220, in the axial direction, part of the centrifugal blades 220 protrudes out of the base plate 210, and the centrifugal blades 220 are arranged in an outwardly inclined manner, which can reduce the projection area of the base plate 210, i.e. the volume of the base plate 210, while ensuring the same flow guiding area, thereby reducing the weight of the centrifugal blades 220 and the weight of the dust removal equipment 10, so as to facilitate the user to move and use, and improve the user experience.

[0065] In some embodiments, at least two reinforcing ribs 230 are arranged on the side of the base plate 210 away from the centrifugal blades 220 in the axial direction of the base plate 210, and the reinforcing ribs 230 are used to increase the strength of the base plate 210.

[0066] Specifically, referring to Figure 5 , the base plate 210 is provided with eight reinforcing ribs 230 on the side away from the centrifugal blades 220 in the axial direction. The reinforcing ribs 230 can improve the overall strength and rigidity of the base plate 210 by dispersing and transmitting external forces applied to the base plate 210, and reduce the risk of deformation or damage caused by external forces, so as to avoid the centrifugal blades 220 from deforming due to stress under the action of wind pressure, thereby affecting the flow guiding effect of the centrifugal blades 220 and damaging the fan blades. Moreover, by arranging the reinforcing ribs 230, the use of materials of the base plate 210 can be optimized, and the overall weight can be reduced without losing strength.

[0067] The technical effects of the above scheme are that, on the one hand, the fan blade assembly is accommodated in the cavity by a hand-held mini shell, which greatly reduces the actual volume of the dust removal equipment, makes the equipment easy to carry, and is suitable for cleaning needs in various occasions, thereby improving the portability and operability of the dust removal equipment; on the other hand, by means different from the prior art, the base plate is designed in a conical side wall shape, which can increase the actual surface area on the same projection area, so as to provide a larger installation area for the centrifugal blades, thereby effectively increasing the contact area of the centrifugal blades with the airflow, making the centrifugal blades generate stronger airflow guidance, and thereby improving the dust removal effect and enhancing the cleaning effect of the dust removal equipment.

[0068] Those skilled in the art can understand that Figures 1 to 5The fan blade assembly for the dust removal device shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the dust removal device to which the scheme of the present application is used. A specific fan blade assembly can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0069] Please continue to refer to Figure 1 and Figure 2 For the housing 100 in the above embodiment, the housing 100 further comprises a detachable first shell 110 and a second shell 120, which together enclose a cavity 101; wherein the part of the cavity 101 inside the first shell 110 is divided into a dust cavity 101a, and the part of the cavity 101 inside the second shell 120 is divided into a mounting cavity 101b; the dust suction port 102 is arranged at one end of the dust cavity 101a away from the mounting cavity 101b, and the fan blade assembly 200 is fixed in the mounting cavity 101b.

[0070] Specifically, the structure of the housing 100 comprises a detachable first shell 110 and a second shell 120, which together enclose a cavity 101. This design aims to improve the maintainability and operational convenience of the device, and also facilitates the user to clean and maintain it separately after disassembling it.

[0071] Further, inside the cavity 101, a filter assembly 920 is installed in the first shell 110, which divides the cavity 101 into two areas: the mounting cavity 101b and the dust cavity 101a. This design makes the flow of air inside the device more orderly and effectively separates impurities from clean air.

[0072] Further, as shown in Figure 6 the dust suction port 102 is arranged at one end of the first shell 110 away from the second shell 120, to ensure that dirt and garbage can be quickly sucked in during the cleaning process. At the same time, the clean airflow after passing through the filter assembly 920 will form in the mounting cavity 101b to flow to the fan blade assembly 200 for flow guiding, and finally be discharged through the air outlet 103, ensuring that the released air is clean and pollution-free.

[0073] Through the separation effect of the filter assembly 920, the optimization of the airflow direction is achieved, so that the garbage on the surface to be cleaned will quickly enter the dust cavity 101a after being sucked into the cavity 101 through the dust suction port 102. This design can effectively capture and store impurities, greatly reducing the risk of impurities flowing back to the environment with the airflow. At the same time, the filtered airflow can smoothly pass through the mounting cavity 101b to the fan blade assembly 200 for flow guiding, thereby improving the overall cleaning efficiency.

[0074] In some embodiments, the first shell 110 and the second shell 120 are both elongated cylindrical shell structures, each having a diameter of 2.5 cm, and the first shell 110 and the second shell 120 are fixed by screwing, and in the assembled state, the length of the shell 100 is about 15 cm. The dust cavity 101a and the dust suction port 102 in the shell are coaxially arranged, and the mounting cavity 101b and the dust cavity 101a are cylindrical in cross-sectional shape, and the cross-sectional shape of the dust suction port 102 is circular.

[0075] The cross sections of the mounting cavity 101b, the dust cavity 101a, the bottom disc 210, and the dust suction port 102 are circular to ensure uniform suction, consistent appearance, and consistent thickness of the shell 100, but the specific shapes of the mounting cavity 101b, the dust cavity 101a, the bottom disc 210, and the dust suction port 102 can also be other styles, for example, the cross-sectional shapes of the bottom disc 210, the mounting cavity 101b, and the dust cavity 101a can also be elliptical or polygonal, the cross section of the dust suction port 102 can be waist-shaped or rectangular, and the position of the bottom disc 210 can be offset from the axis of the dust cavity 101a. In other embodiments, the first shell 110 and the second shell 120 can also be fixed by clamping or inserting, or can be opened and closed by a shaft connection and locking structure, which is not limited here.

[0076] In addition, in the embodiments of the present application, the airflow direction refers to the direction of the gas flowing in the cavity 101, which is generally the axis direction of the first shell 110 and the second shell 120, which may be slightly offset in the radial direction of the cavity 101 due to the blocking effect of the air guide structure and the internal parts at some positions of the cavity 101, and the airflow direction described in the limiting direction refers to the axis direction of the first shell 110 and the second shell 120, and the outer contour of the first shell 110 and the second shell 120 is cylindrical, and the axis is the center axis of the corresponding cylinder.

[0077] The technical effect of the above scheme is that by designing the cavity of the shell into a mounting cavity and a dust cavity, more efficient garbage separation and airflow optimization are achieved. After the cleaning airflow passes through the filter assembly, it can ensure that impurities are effectively isolated, and the purified air is safely discharged to the fan blade assembly 200. In addition, the shell structure improves the use stability and cleaning performance of the device, not only optimizes the cleaning effect, but also greatly improves the user experience.

[0078] In some embodiments, please refer to Figure 6 and Figure 7The dust removal equipment 10 further comprises a wind pressure motor 300 fixed in the cavity 101, and an output shaft 310 of the wind pressure motor 300 is used to sleeve the bottom disc 210; wherein the output shaft 310 is used to drive the bottom disc 210 to rotate, so as to synchronously drive the centrifugal blade 220 to rotate, thereby generating wind pressure in the cavity 101, and the wind pressure is used to suck the airflow carrying dust particles into the cavity 101 from the dust suction port 102.

[0079] Specifically, the wind pressure motor 300 is the core power component of the dust removal equipment 10, and is responsible for providing the power required for generating airflow and suction. Wherein the wind pressure motor 300 is usually driven by an electric motor, which can convert electrical energy into mechanical energy to drive the centrifugal blade 220 to rotate.

[0080] In an embodiment, please continue to refer to Figure 2 The wind pressure motor 300 is fixedly connected to the inner wall of the shell 100 through a mounting piece 400. Wherein the mounting piece 400 is installed in the shell 100, the wind pressure motor 300 and the mounting piece 400 are fixedly connected, the wind pressure motor 300 can be located in the middle or downstream of the shell 100 in the flow direction of the airflow, and the wind pressure motor 300 is connected to the mounting piece 400 on the dust removal equipment 10 and located at one end away from the dust suction port 102, which is used to fix the fan blade assembly 200.

[0081] Wherein, by the structure of the wind pressure motor 300, the fan blade assembly 200 is arranged in the cavity 101, and the specific position is inside the mounting cavity 101b. This layout not only effectively utilizes the internal space, but also reduces the overall weight of the equipment and improves the portability. Moreover, by designing the configuration of the wind pressure motor 300 and the fan blade assembly 200, an efficient wind pressure motor 300 is used for electric drive, which provides sufficient power for the overall cleaning equipment, ensures stable work under high load conditions, and sleeves the fan blade assembly 200 on the output shaft 310 of the wind pressure motor 300. This design allows the wind pressure motor 300 to directly drive the fan blade to rotate at high speed, thereby forming high-strength wind pressure in the cavity 101.

[0082] In an embodiment, continue as Figure 6 and Figure 7As shown, the wind pressure motor 300 comprises an output shaft 310, a metal bracket 320, a bearing set 330, a rotor set 340 and a stator set 350; wherein the metal bracket 320 is fixed in the mounting 400, and the metal bracket 320 is a truncated cone structure for covering and fixing the bearing set 330; the bearing set 330 is accommodated in the metal bracket 320, and the output shaft 310 is used to support the rotor set 340 and allow the rotor set 340 to rotate through the output shaft 310, and the output shaft 310 is connected to the rotating shaft of the bearing set 330; the stator set 350 is sleeved on the circumferential surface of the metal bracket 320, and when current passes through the stator set 350, the stator set 350 generates a rotating magnetic field to drive the output shaft 310 to rotate.

[0083] Specifically, the traditional motor has certain limitations in structural design and operating performance, which is easy to cause problems such as large noise, high heat, low efficiency, etc. Therefore, in order to meet the actual demand, a wind pressure motor 300 with improved structure is provided in the present application. Among them, the metal bracket 320 of the wind pressure motor 300 is a truncated cone structure, which is suitable for covering and fixing the main components in design, ensuring the stable connection and support of each part. The bearing set 330 of the wind pressure motor 300 is accommodated in the metal bracket 320, which can effectively reduce the friction between rotating parts, improve the operating efficiency, and the output shaft 310 plays a role in supporting the rotor set 340 and allowing the rotor set 340 to rotate smoothly. The output shaft 310 of the wind pressure motor 300 is connected with the rotating shaft in the bearing set 330, forming the core part of mechanical power transmission. The stator set 350 of the wind pressure motor 300 is fixed on the circumferential surface of the metal bracket 320, so that when current passes through the stator set 350, a rotating magnetic field will be generated to drive the output shaft 310 to rotate, playing a key role in the operation of the motor.

[0084] In other embodiments, please continue as Figure 7As shown, the wind pressure motor 300 can also include a motor drive board 360. The motor drive board 360, also known as a motor control board or drive circuit board, is a key electronic component for controlling and driving the motor to work. Its main functions include: ① Motor control, the motor drive board can adjust the working state of the motor, control the start, stop, speed and direction of the motor, etc. ② Power management, the board is usually responsible for converting the input power (such as from the battery or power adapter) into voltage and current suitable for the motor. ③ Signal processing, the drive board can receive signals from the user interface (such as switches, remote controls, etc.), and adjust the working state of the motor according to these signals. ④ Protection function, the motor drive board 360 is usually designed with overload protection, overheat protection and short circuit protection functions, to ensure the safety of the motor and the entire system. ⑤ Feedback system, the drive board is also equipped with sensors that can monitor the running state of the motor (such as speed, temperature, etc.), and dynamically adjust according to the feedback information.

[0085] In an embodiment, as shown in Figure 5 and Figure 7 , a mounting hole 211 is provided at the center of the cone of the base plate 210, and a mounting bevel 212 is provided on the side of the mounting hole 211 close to the wind pressure motor 300; wherein the mounting hole 211 is used to extend the end of the output shaft 310, so that the base plate 210 is sleeved on the end of the output shaft 310, and the mounting bevel 212 is used to enlarge the mounting area of the base plate 210 when it is sleeved on the output shaft 310.

[0086] Specifically, on the one hand, a mounting hole 211 is provided at the center of the cone of the base plate 210, which is used to extend the end of the output shaft 310 to realize the direct connection of the base plate 210 and the output shaft 310. The design of the mounting hole 211 can ensure the accurate butt joint with the output shaft, avoiding unstable operation due to deviation. On the other hand, a mounting bevel 212 is provided on the side of the mounting hole 211 close to the wind pressure motor 300. The design of the bevel is used to enlarge the mounting area of the base plate 210 when it is sleeved on the output shaft 310, so that the base plate can better disperse the stress when connected with the motor, improving the reliability of installation. The presence of the mounting bevel 212 makes the base plate 210 easier to butt joint with the output shaft 310 during installation, reducing errors and improving the overall installation accuracy.

[0087] In a specific application scenario, as shown in Figure 7As shown, the angle between the conical side wall of the base plate 210 and the axis is 63°, and the output shaft 310 of the wind pressure motor 300 is fixed to the assembly hole 233 of the base plate 210 through the installation bevel 212, so as to fix the base plate 210 to the output shaft 310. The projection of the base plate 210 on the axis is circular, which can ensure the rotation of the centrifugal blade 220 in the mounting member 400 while obtaining a larger area, thereby increasing the installation area of the centrifugal blade 220. The base plate 210 is provided in the form of a conical side wall, which can increase the actual surface area on the same projection area, thereby increasing the installation area of the centrifugal blade 220, and further increasing the contact area between the centrifugal blade 220 and the airflow, and increasing the airflow guiding effect.

[0088] The technical effect of the above embodiment is that the assembly hole 211 in the center of the base plate 210 provides a stable mounting point, so that the end of the corresponding output shaft 310 extends out of the assembly hole 211 and precisely matches the base plate 210, thereby realizing uninterrupted rotation of the fan blade assembly. In addition, the presence of the installation bevel 212 makes the entire installation process more smooth, not only improving the positioning accuracy of the assembly, but also reducing the vibration that may be caused by unstable center of gravity during operation.

[0089] In an embodiment, as shown in Figure 6 and Figure 8 The dust removal equipment 10 further comprises a mounting member 400 fixed in the mounting cavity 101b for covering and fixing the wind pressure motor 300. The mounting member 400 is provided with an opening 401 on the side of the output shaft 310 of the wind pressure motor 300 close to the dust suction port 102, and the end of the output shaft 310 extends out of the opening 401, so that the base plate 210 is sleeved on the end of the output shaft 310.

[0090] In some embodiments, the mounting member 400 specifically comprises a mounting seat 410, a connecting element 420, and a mounting cylinder 430. The mounting seat 410 surrounds the wind pressure motor 300, the connecting element 420 is curved in the axis direction of the second shell 120, and the mounting cylinder 430 is attached to the second shell 120 to surround and mount the entire wind pressure motor 300.

[0091] The mounting seat 410 is a cylindrical cavity wall structure without a top cover, that is, the mounting seat 410 is provided with an opening 401 on the side of the output shaft 310 of the wind pressure motor 300 close to the dust suction port 102, and the mounting seat 410 and the second shell 120 are coaxially arranged.

[0092] The mounting seat 410 surrounds and mounts the wind pressure motor 300, ensuring that the motor is stable and well protected. This structural design effectively resists damage to the motor from the external environment, while providing good support.

[0093] In some embodiments, the connecting element 420 is a web structure, and the mounting cylinder 430 is a circular ring column shell structure. The connecting element 420 is connected to one end of the inner wall of the mounting cylinder 430 and the other end of the mounting seat 410 in a direction perpendicular to the axis of the second shell 120, so as to realize the mounting of the wind pressure motor 300 on the second shell 120.

[0094] Further, the connecting element 420 is arranged in a curved manner in the axis direction of the second shell 120, that is, the connecting element 420 is in a circular arc shape, and the number of the connecting element 420 is five. The five connecting elements 420 are arranged around the mounting seat 410. The circular arc arrangement of the connecting element 420 can guide the gas while increasing the contact area, so as to reduce the resistance of the gas flow.

[0095] The curved structure of the connecting element 420 helps to guide the gas flow to a more smooth path, reducing the resistance of the gas flow. This optimized design ensures that the gas flow after passing through the wind pressure motor 300 is more efficient, reduces the risk of gas flow convergence and vortex generation, and improves the utilization rate of wind pressure.

[0096] In some embodiments, the connecting element 420 can be a flat plate structure or a block structure with a large cross-sectional area, and the two ends thereof are connected to the mounting cylinder 430 and the mounting seat 410, respectively, so as to realize the fixation of the mounting seat 410 in the mounting cylinder 430. In other embodiments, the number of the connecting element 420 can also be two, three, or six or more. The plurality of connecting elements 420 are arranged around the mounting seat 410, or the number of the connecting element 223 is directly set to one while ensuring the mounting strength of the mounting seat 410.

[0097] In order to match the shape of the wind pressure motor 300 and the mounting cavity 101b, the outer contours of the mounting cavity 101b, the mounting seat 410, and the mounting cylinder 430 are arranged in a cylindrical manner, which can optimize the space and keep the distance between the mounting cylinder 430 and the inner wall of the second shell 120 consistent, avoiding uneven wind pressure and causing resistance. In other embodiments, the wind pressure motor 300 can also be fixedly mounted on the second shell 120 in other structures, so as to realize the fixed mounting of the wind pressure motor 300.

[0098] In some embodiments, in order to simplify the structure of the shell 100 and reduce the production difficulty of the shell 100, the mounting part 400 can be an independent component. The wind pressure motor 300 is mounted on the mounting part 400, and then the mounting part 400 and the wind pressure motor 300 are mounted in the shell 100 together. However, in other embodiments, the mounting part 400 can also be integrally formed with the shell 100, which is not limited here.

[0099] In some embodiments, as shown in FIG. 6, the mounting part 400 can be a mounting cylinder 430, and the mounting seat 410 is arranged in the mounting cylinder 430. Figure 8As shown, the mounting member 400 can have a receiving cavity 402 for accommodating at least part of the air pressure motor 300 from the opening 401, i.e. the opening 401 of the mounting member 400 and the air pressure motor 300 on the side close to the suction port 102 in the airflow direction are connected to each other, and the mounting member 400 is arranged around the inner wall of the housing 100 to separate the mounting space in the cavity 101 where the air pressure motor 300 can be mounted.

[0100] In an embodiment, the opening 401 of the mounting member 400 and the air pressure motor 300 on the side close to the suction port 102 in the airflow direction are connected areas, which are both hollow cylindrical structures, so that the mounting member 400 and the air pressure motor 300 can be connected in close contact.

[0101] Wherein, by means of the fixing and covering design of the mounting member 400, the air pressure motor 300 can remain stable during operation of the equipment, reducing operation instability caused by vibration, and improving the overall operation safety and reliability of the dust removal equipment 10. In addition, the structure design of the mounting member 400 enables the centrifugal blades 220 to be directly and quickly connected to the air pressure motor 300, ensuring efficient generation of air pressure. This structure can reduce the impedance of airflow, improve the air pressure efficiency of the equipment, and thus improve the dust removal effect.

[0102] The technical effect of the above embodiment is that by closely combining the air pressure motor and the centrifugal blades, the structure is simplified and the assembly efficiency is improved. At the same time, the strong air pressure generation makes the airflow more stable, ensuring the maximization of the cleaning effect. During use, the user can complete the cleaning of various surfaces in a short time through the strong air pressure, thereby improving the use satisfaction.

[0103] In an embodiment, as shown in Figure 6 and Figure 8 The mounting member 400 is a cylindrical structure, and an airflow passage is formed in the inner wall of the cylinder of the mounting member 400, and a dust collecting piece 403 is arranged on the inner wall of the cylinder, which is used to adsorb dust particles carried by the airflow flowing in the airflow passage.

[0104] Specifically, the mounting member 400 is a cylindrical structure designed as a closed cylinder, which can effectively surround the fan blade assembly, maintain the stability of the assembly, and provide an airflow passage for the airflow. An airflow passage is formed in the inner wall of the cylinder of the mounting member 400, which ensures efficient passage of the airflow and promotes the airflow processing performance of the fan blade assembly 200, thereby improving the working efficiency of the entire dust removal equipment.

[0105] The dust collecting piece 403 is arranged on the inner wall of the cylinder body, and the dust collecting piece 403 is used for adsorbing dust particles carried by the airflow in the airflow channel. The surface of the dust collecting piece 403 can be designed with special materials or coatings to improve the adsorption capacity of the dust collecting piece 403 to the dust particles, so that the dust can be effectively captured when the airflow passes through, and the cleaning degree of the airflow is improved.

[0106] The technical effect of the above embodiment is that the mounting part 400 of the cylinder body structure can perfectly surround the fan blade assembly to form a closed space to guide the airflow. The design of the airflow channel ensures that the airflow flows along the predetermined path, promotes the concentration and acceleration of the airflow, and the setting of the dust collecting piece 403 greatly improves the collection efficiency of the dust particles, which significantly improves the dust removal effect, and the user can obtain fresher air.

[0107] The utility model also provides a kind of portable dust removal equipment 20, please refer to Figure 9 And Figure 10 , the portable dust removal equipment 20 includes the shell 100 for dust removal equipment, fan blade assembly 200, wind pressure motor 300 and mounting part 400 described above in addition to, still include cleaning accessory 910, filter assembly 920, power supply assembly 930, cover body assembly 940 and drive source 950. Wherein, cleaning accessory 910 is located in cavity 101 and part extends dust suction port 102, cleaning accessory 910 is cleaned to the surface to be cleaned by the mode of movement. Filter assembly 920 is located in cavity 101, and filter assembly 920 is used to filter the airflow with dust particles inhaled into cavity 101 from dust suction port 102. Drive source 950 is located in cavity 101, and drive source 950 is used to drive cleaning accessory 910 to move. Power supply assembly 930 is located in cavity 101, and power supply assembly 930 is used to power wind pressure motor 300 and drive source 950. Cover body assembly 940 is located in cavity 101, and cover body assembly 940 is used to store and protect cleaning accessory 910.

[0108] In some embodiments, as Figure 10As shown, the portable dust removal device 20 of the present application realizes miniaturization of the shell 100 and orderly arrangement of the internal components through its unique structural design. For example, from the dust suction port 102 to the air outlet 103 of the cavity 101, the cover assembly 940, the cleaning accessory 910, the filter assembly 920, the driving source 950, the mounting piece 400, the air pressure motor 300, the fan blade assembly 200, the power supply assembly 930 and other components (such as a touch panel, a wind deflector, etc.) of the portable dust removal device 20 can be combined together in sequence, thereby forming a complete portable dust removal device 20. Among them, the cover assembly 940, the cleaning accessory 910, the filter assembly 920, the driving source 950, the mounting piece 400, the air pressure motor 300, the fan blade assembly 200 and the power supply assembly 930 are connected in sequence in the cavity 101, forming a compact and efficient cleaning system, so that powerful cleaning performance can be achieved without occupying too much space.

[0109] In some embodiments, each component in the portable dust removal device 20 is detachably connected to the shell 100 or other components, so that the assembly and subsequent disassembly of each component are more convenient and efficient.

[0110] In some embodiments, one end of the cleaning accessory 910 is a mounting end for mounting on the output shaft of the driving source 950 to realize power transmission between the cleaning accessory 910 and the driving source 950, and the other end is a cleaning end for cleaning the surface to be cleaned under the drive of the driving source 950.

[0111] Optionally, the surface to be cleaned can be a flat surface or a concave-convex surface, and can also be a hard surface or a soft surface, etc., and for different types of surfaces to be cleaned, the user can also replace the corresponding matching cleaning accessory 910 for cleaning to effectively clean the surface to be cleaned. Therefore, the cleaning accessory 910 is designed to be exquisite and can flexibly meet the cleaning needs of different surfaces and environments.

[0112] In an embodiment, in order to ensure the strength of the mounting end of the cleaning accessory 910 and prevent the mounting end and the output shaft from being deformed or damaged under stress, the cleaning accessory 910 can be partially arranged in a manner that the mounting end extends out of the cavity 101 from the dust suction port 102, but in other embodiments, the mounting end can also be arranged without extending into the dust suction port 102, that is, the cleaning accessory 910 is arranged in a manner that the mounting end and the output shaft are fixedly assembled with the mounting end extending out of the dust suction port 102.

[0113] In some embodiments, the driving source 950 is installed in the cavity 101 and arranged behind the cleaning accessory 910, responsible for driving the movement of the cleaning accessory 910 to realize the cleaning capability of the device. Among them, the driving source 950 is a detachable driving motor, which includes a rotating motor, a vibration motor, or an ultrasonic wave generating device, etc.

[0114] For example, the driving source 950 can be a rotating motor, which is used to drive the cleaning accessory in a rotating manner to clean the surface to be cleaned. Among them, the rotating motor can be used in the scene of cleaning oil stains or fingerprint marks on the surface, which can provide stable rotating power for the cleaning accessory 910, so that the cleaning accessory 910 effectively contacts the cleaning surface, thereby efficiently removing the attached stains without damaging the surface.

[0115] For another example, the driving source 950 can be a vibration motor, which is used to drive the cleaning accessory in a vibrating manner to clean the surface to be cleaned. Among them, the vibration motor can be used in the scene of cleaning dust attachments on the surface, which can effectively loosen and shake off the dust attached to the surface, thereby enhancing the cleaning effect, especially when dealing with fabrics or uneven surfaces.

[0116] For some specific scenes, such as stubborn stains or deep cleaning of fine particles, the driving source 950 can be an ultrasonic wave generating device, so as to realize the deep cleaning effect of the cleaning surface through the high-frequency sound waves generated by the ultrasonic wave generating device.

[0117] Among them, the use of rotating motor, vibration motor and ultrasonic wave generating device makes the driving source 950 can provide the optimal solution under different cleaning requirements, so as to meet the cleaning requirements of family, industry and special environment.

[0118] In some embodiments, the fan blade assembly 200 is located in the cavity 101 and arranged behind the power supply assembly 930, which is used to generate wind pressure in the cavity 101, which functions to suck the garbage on the surface to be cleaned into the cavity 101 through the dust suction port, which is effectively implemented in the mini space, thereby enhancing the dust suction capability of the device.

[0119] Among them, the fan blade assembly 200 can include a motor and a fan blade, the motor is fixedly installed on the shell 100 and accommodated in the cavity 101, and the fan blade is sleeved on the power shaft of the motor, so that the motor can drive the fan blade to rotate, thereby generating wind pressure in the cavity 101 and causing gas flow in the cavity 101, so as to suck the garbage on the surface to be cleaned into the cavity 101 through the dust suction port 102.

[0120] In some embodiments, the filtering assembly 920 is arranged in sequence in the cavity and between the fan blade assembly 200 and the driving source 950, which functions to effectively filter the garbage entering the cavity 101, ensure the cleaning effect, prevent the garbage from flowing back to the environment, and improve the safety of user use.

[0121] In some embodiments, the filtering assembly 920 is arranged in sequence in the cavity and between the fan blade assembly 200 and the driving source 950, which functions to effectively filter the garbage entering the cavity 101, ensure the cleaning effect, prevent the garbage from flowing back to the environment, and improve the safety of user use.

[0122] In some embodiments, the filtering assembly 920 is arranged in sequence in the cavity and between the fan blade assembly 200 and the driving source 950, which functions to effectively filter the garbage entering the cavity 101, ensure the cleaning effect, prevent the garbage from flowing back to the environment, and improve the safety of user use.

[0123] In some embodiments, the filtering assembly 920 is arranged in sequence in the cavity and between the fan blade assembly 200 and the driving source 950, which functions to effectively filter the garbage entering the cavity 101, ensure the cleaning effect, prevent the garbage from flowing back to the environment, and improve the safety of user use.

[0124] As a specific embodiment, the portable dust removal device 20 at least includes a handheld dust removal pen for wireless use and an automatic dust removal instrument for automatic opening and closing and dust removal use.

[0125] In some embodiments, the filtering assembly 920 is arranged in sequence in the cavity and between the fan blade assembly 200 and the driving source 950, which functions to effectively filter the garbage entering the cavity 101, ensure the cleaning effect, prevent the garbage from flowing back to the environment, and improve the safety of user use.

[0126] The automatic dust removal instrument has an intelligent opening and closing function, can independently clean a preset fixed area according to a preset working mode, and can be remotely controlled by a user or automatically turned on or off according to environmental conditions during work, thereby improving the use convenience of the user. Meanwhile, the dust removal instrument can be connected with other intelligent devices of the user to realize remote control and timing cleaning functions.

[0127] Since the portable dust removal equipment 20 of the embodiment of the application comprises the above-mentioned fan blade assembly 200 for the dust removal equipment, the portable dust removal equipment 20 of the embodiment of the application has the beneficial effects of the above-mentioned fan blade assembly 200, which will not be described here. The embodiment of the application is provided with a cleaning accessory 910, which is arranged through the fixing part of the mounting assembly, and the fan blade assembly 200 and the filter sponge are arranged in a fixed manner in the form of an annular sleeve on the fixing part, which can better adapt to the structure of the cavity 101 and has better shielding effect.

[0128] The technical effect of the above-mentioned scheme is that the device not only avoids the clumsiness and inconvenience of traditional cleaning tools, but also provides a portable, flexible and efficient solution, meeting the expectations of modern users for portable cleaning equipment. Users can easily carry the device to every corner of daily life and clean it at any time, improving the quality of life. Specifically, in one aspect, by means different from the prior art, the cleaning accessory, the driving source, the fan blade assembly and the filter module are accommodated in the cavity through a hand-held mini shell, greatly reducing the physical volume of the dust removal equipment, realizing miniaturization of the dust removal equipment, and thus improving the portability and operability of the dust removal equipment. On the other hand, the scheme first drives the cleaning accessory by the driving source to clean the surface to be cleaned close to the dust suction port, then generates wind pressure in the cavity by the fan blade assembly to suck the garbage on the surface to be cleaned into the cavity through the dust suction port, and finally filters the sucked garbage by the filter module in the cavity, thereby realizing cleaning of dirt such as dust and garbage, effectively improving the cleanliness of dirt in dead corners and gaps, and thus achieving powerful cleaning.

[0129] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the application. In addition, those skilled in the art will easily think of other embodiments of the application after considering the specification and practicing the application. The application is intended to cover any variations, uses or adaptations of the application that follow the general principles of the application and include common knowledge or conventional technical means in the art that are not claimed by the application. The specification and examples are only considered as exemplary, and the true scope and spirit of the application are indicated by the claims.

[0130] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A fan blade assembly for a dust removal device, characterized in that, The dust removal device comprises a hand-held mini shell, a cavity in the shell, and a dust suction port on one end of the cavity for communicating with the outside; the fan blade assembly comprises: a base disc accommodated in the cavity; centrifugal blades fixed on one side of the base disc towards the dust suction port in a circumferential array; wherein the base disc is coaxially arranged with the shell, and the base disc is a conical structure with a conical side wall for increasing the mounting area of the centrifugal blades on the base disc, so as to increase the contact area of the centrifugal blades and the airflow carrying dust particles when the airflow carrying dust particles is sucked into the cavity from the dust suction port.

2. The fan blade assembly for a dusting apparatus of claim 1, wherein, The included angle between the conical side wall of the base disc and the axis of the base disc is 15° to 75°.

3. The fan blade assembly for a dusting apparatus of claim 1, wherein, In the axis direction of the base disc, the centrifugal blades are arranged with a preset angle towards the outside of the base disc, so as to increase the contact area of the centrifugal blades and the airflow without changing the projection area of the base disc in the axis direction.

4. The fan blade assembly for a dusting apparatus of claim 1, wherein, At least two reinforcing ribs are arranged on the side of the base disc away from the centrifugal blades in the axis direction of the base disc, and the reinforcing ribs are used to increase the strength of the base disc.

5. The fan blade assembly for a dust extraction apparatus according to any one of claims 1 to 4, wherein, The dust removal device further comprises: a wind pressure motor fixed in the cavity, and an output shaft of the wind pressure motor for sleeving the base disc; wherein the output shaft is used to drive the base disc to rotate, so as to synchronously drive the centrifugal blades to rotate, thereby generating wind pressure in the cavity, and the wind pressure is used to suck the airflow carrying dust particles from the dust suction port into the cavity.

6. The fan blade assembly for a dust extraction apparatus according to claim 5, wherein, A mounting hole is arranged at the center of the base disc, and a mounting bevel is arranged on the side of the mounting hole close to the wind pressure motor; wherein the mounting hole is used to extend the end of the output shaft, so that the base disc is sleeved on the end of the output shaft, and the mounting bevel is used to enlarge the mounting area of the base disc when it is sleeved on the output shaft.

7. The fan blade assembly for a dust extraction apparatus according to claim 6, wherein, The shell comprises a detachable first shell and a second shell, and the first shell and the second shell jointly enclose the cavity; wherein the part of the cavity in the first shell is divided into a dust cavity, and the part of the cavity in the second shell is divided into a mounting cavity; the dust suction port is arranged at one end of the dust cavity away from the mounting cavity, and the fan blade assembly is fixed in the mounting cavity.

8. The fan blade assembly for a dust extraction apparatus according to claim 7, wherein, The dust removal device further comprises: a mounting member fixed in the mounting cavity for covering and fixing the wind pressure motor; wherein the mounting member is provided with an opening on the side of the output shaft of the wind pressure motor close to the dust suction port, and the opening is used to extend the end of the output shaft, so that the base disc is sleeved on the end of the output shaft.

9. The fan blade assembly for a dust extraction apparatus according to claim 8, wherein, The mounting member is a cylindrical structure, an airflow channel is formed in the inner wall of the cylinder of the mounting member, and a dust collecting piece is arranged on the inner wall of the cylinder, and the dust collecting piece is used to adsorb the dust particles carried by the airflow flowing through the airflow channel.

10. A portable dust extraction apparatus characterised in that, The portable dust removal device comprises the fan blade assembly for dust removal device according to any one of claims 1-9, and is used for increasing the contact area between the centrifugal blades of the fan blade assembly and the airflow when the airflow carrying dust particles is sucked from the dust suction port into the cavity.

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