Dust separation device and dust collector

Abstract

The dust and dirt separation device and vacuum cleaner provided by this invention include: a main body with a vacuum motor internally mounted; a fan wheel mounted on the vacuum motor; a dust collection chamber detachably mounted on the main body, with an air inlet; and a filter support mounted in the dust collection chamber. An output shaft is mounted on the filter support, and filter screens are respectively mounted on the output shaft. The output shaft is adapted to drive the filter screens to rotate under external force. This design achieves self-cleaning of the filter screens, preventing the filter screens from losing filtration performance due to dust or impurities adhering to them, reducing the frequency of filter screen replacement and cleaning, improving the user experience, and reducing the power consumption of the vacuum cleaner, thus contributing to energy conservation and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of vacuum cleaner technology, specifically to a dust and dirt separation device and a vacuum cleaner. Background Technology

[0002] With the economy developing rapidly and consumers' incomes growing steadily, especially in large and medium-sized cities, residents' living conditions are constantly improving, and there are more and more large-scale homes. As a result, residents' demand for vacuum cleaners is also increasing.

[0003] Vacuum cleaners, as common electrical appliances, use a built-in motor to create a negative pressure environment, drawing in air mixed with dust and dirt from the outside. After filtration and separation, the dust and dirt remain inside the vacuum cleaner, while the clean air is expelled to the outside. Typically, the dirt separator in a vacuum cleaner includes a porous bag separator or a cyclone separator.

[0004] However, after a period of use, the small holes in the dust bag of a multi-hole bag separator quickly become clogged with dirt, causing a decrease in vacuum cleaner suction. Once the dust bag is full, the old bag needs to be discarded and replaced with a new one, resulting in resource waste, environmental pollution, and increased user costs. Furthermore, the dirt separation efficiency is relatively low. For cyclone separators, the airflow carrying dust and dirt forms a cyclone inside the vacuum cleaner. Because the dust particles themselves have relatively large mass, they rub and collide with the container wall due to centrifugal force and fall into the dust collection box, thus achieving the purpose of separating dirt and air. However, cyclone separators themselves require higher vacuum pressure and a more powerful vacuum motor, resulting in louder noise during operation and affecting the user experience.

[0005] A dust separator is provided in the prior art, comprising a perforated disc located at the airflow outlet of a dust collection chamber and a motor driving the disc to rotate. The disc is arranged to rotate about a rotation axis and includes perforations through which cleaned airflow passes. Airflow carrying contaminants enters the chamber and contacts the rotating disc, which applies a tangential force to the airflow, causing the contaminants carried in the airflow to move radially along the disc surface towards the edge of the disc. During this process, the airflow flows out through the perforations in the disc, while the contaminants, due to their greater inertia, continue to move towards the outer radial edge and accumulate at the bottom of the chamber. Compared to cyclone separators, this separator consumes less vacuum pressure and can be paired with a lower-power and lower-noise vacuum motor.

[0006] However, this type of separator adds a motor to drive the rotating disc during operation, which increases the overall power consumption of the vacuum cleaner and is not conducive to energy conservation and environmental protection. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the high energy consumption of the existing dirt separator, thereby providing a more energy-efficient dust and dirt separation device and vacuum cleaner.

[0008] This invention provides a dust and dirt separation device, comprising: a main body, in which a vacuum motor is installed;

[0009] The impeller is mounted on the vacuum motor;

[0010] A dust collection chamber is detachably mounted on the main body, and an air inlet is provided on the dust collection chamber;

[0011] A filter support is disposed in the dust collection chamber. An output shaft is disposed on the filter support, and a filter is disposed on the output shaft. The output shaft is adapted to drive the filter to rotate under the action of an external force.

[0012] The dust and dirt separation device also includes a power unit that acts on the output shaft.

[0013] The power unit is a pneumatic fan blade, and the mounting hole of the output shaft passes through the output shaft.

[0014] The pneumatic fan blades are positioned between the filter screen and the impeller.

[0015] The axis of the air inlet is aligned with the axis of the filter screen.

[0016] An inner cylinder is provided on the inner wall of the main body, and the filter screen support is provided on the inner wall of the inner cylinder. The diameter of the filter screen is larger than the diameter of the inner cylinder.

[0017] The main body includes: a first main body, wherein the vacuum motor is disposed in the first main body;

[0018] The second body is detachably connected to the first body, and the filter support is disposed in the second body.

[0019] Vent holes are provided on the side wall of the first main body.

[0020] The first main body is equipped with a vacuum motor mounting section.

[0021] The vacuum motor mounting part is a groove provided on the inner wall of the first main body.

[0022] A connecting sleeve is provided on the side of the filter screen near the filter screen bracket, and the connecting sleeve is adapted to connect the output shaft.

[0023] The filter screen includes an open area and a non-open area, wherein the open area is located inside the non-open area.

[0024] The opening area is provided with a number of through holes, and the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen gradually increases along the direction away from the center of the filter screen.

[0025] The dust and dirt separation device also includes a motor filter screen, which is installed on the impeller at one end near the filter screen support.

[0026] The dust collection chamber has an opening, and the main body is connected to the dust collection chamber through the opening. The edge of the filter screen abuts against the inner edge of the opening and is movably connected.

[0027] The present invention provides a vacuum cleaner, characterized in that it includes the above-mentioned dust and dirt separation device;

[0028] The suction pipe is connected at one end to the air inlet of the dust and dirt separation device;

[0029] The vacuum cleaner head is connected to the other end of the vacuum hose.

[0030] The technical solution of this invention has the following advantages:

[0031] 1. The dust and dirt separation device provided by the present invention includes: a main body, in which a vacuum motor is disposed; a fan wheel, disposed on the vacuum motor; a dust collection chamber, detachably disposed on the main body, the dust collection chamber being provided with an air inlet; a filter screen bracket, disposed in the dust collection chamber, the filter screen bracket being provided with an output shaft, the output shaft being provided with filter screens respectively, and the output shaft being adapted to drive the filter screens to rotate under the action of external force.

[0032] When the vacuum motor is turned on, the impeller rotates, drawing air into the main unit through the air inlet of the dust collection chamber. The external force drives the output shaft to rotate, and the filter screen set on the output shaft rotates synchronously as it filters dust and impurities from the airflow into the main unit. Under the action of centrifugal force, the dust and impurities adhering to the filter screen are thrown off. This design achieves self-cleaning of the filter screen, preventing the filter screen from losing its filtering performance due to the adhesion of dust or impurities, reducing the frequency of filter screen replacement and cleaning, improving the user experience, reducing the power consumption of the vacuum cleaner, and contributing to energy conservation and environmental protection.

[0033] 2. In the dust and dirt separation device provided by the present invention, the pneumatic fan blade is disposed between the filter screen and the impeller.

[0034] This arrangement places the pneumatic fan blades and impeller adjacent to each other, improving the air intake efficiency of the pneumatic fan blades, thereby increasing the rotational speed of the output shaft and filter screen, and enhancing the filter screen's self-cleaning ability against dust accumulation.

[0035] 3. The dust and dirt separation device provided by the present invention is characterized in that the axis of the air inlet and the axis of the filter screen are arranged to coincide with each other.

[0036] This design shortens the path of airflow into the filter, thus improving filtration efficiency.

[0037] 4. The dust and dirt separation device provided by the present invention has an inner cylinder on the inner wall of the main body, a motor bracket on the inner wall of the inner cylinder, and the diameter of the filter screen is larger than the diameter of the inner cylinder.

[0038] By using the above-mentioned setup, the inner cylinder area is covered, thus preventing dust and dirt from entering the main body and causing pollution.

[0039] 5. In the dust and dirt separation device provided by the present invention, the vacuum motor mounting part is a groove provided on the side wall of the first main body.

[0040] By setting grooves, the vacuum motor itself can be stabilized, preventing it from shaking.

[0041] 6. The dust and dirt separation device provided by the present invention has a plurality of through holes in the opening area, and the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen gradually increases along the direction away from the center of the filter screen.

[0042] By setting the axis of the through hole, the through hole itself can be deviated from the direction of dust and dirt movement by a certain angle, preventing dust and dirt from directly entering the through hole and causing blockage. Attached Figure Description

[0043] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the structure of the vacuum cleaner provided by the present invention;

[0045] Figure 2 This is a three-dimensional structural diagram of the dust and dirt separation device provided by the present invention;

[0046] Figure 3 for Figure 2 The diagram shows the internal structure of the dust and dirt separation device.

[0047] Figure 4 for Figure 2 The diagram shown is an exploded view of the dust and dirt separation device.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1 - Main body; 11 - First main body; 111 - Exhaust port; 12 - Second main body; 13 - Inner cylinder; 14 - Vacuum motor mounting part; 2 - Vacuum motor; 3 - Impeller; 31 - Motor filter screen; 4 - Dust collection chamber; 5 - Air inlet; 6 - Pneumatic fan blade; 7 - Filter screen; 71 - Connecting sleeve; 8 - Filter screen bracket; 81 - Output shaft; 9 - Suction pipe; 10 - Vacuum cleaner head. Detailed Implementation

[0050] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0054] like Figure 1 - Figure 4 The present invention provides a dust and dirt separation device, including a main body 1, a fan wheel 3, a dust collection chamber 4, and a filter support 8.

[0055] The main body 1 is cylindrical in shape and has a vacuum motor 2 connected to an external power source inside. The center of the impeller 3 is sleeved on the rotating shaft of the vacuum motor 2 and is detachably connected to it. In this embodiment, the connection is threaded, but it can also be an interference fit or the like. Along the working rotation direction of the impeller 3, a negative pressure environment is generated inside the dust and dirt separation device to attract the airflow with dust and impurities from the outside.

[0056] The dust collection chamber 4 is a cylindrical shape with a diameter larger than that of the main body 1. It is detachably fitted onto the main body 1, which facilitates the cleaning of dust collected inside the dust collection chamber 4 and the maintenance of the filter screen 7. It can also be fixed by different connection methods such as snaps or threads. In this embodiment, it is a snap connection. The dust collection chamber 4 is provided with an opening. The main body 1 is connected to the dust collection chamber 4 through the opening. The dust collection chamber 4 is provided with an air inlet 5. In this embodiment, the dust collection chamber 4 is composed of a dust cup cover with an air inlet 5 and a dust collection chamber 4 body with an opening.

[0057] The filter support 8 is set in the dust collection chamber 4, and an output shaft 81 is set on it. The filter 7 is set on the output shaft 81, and the output shaft 81 can drive the filter 7 to rotate under the action of external force.

[0058] When the vacuum motor 2 is turned on, the impeller 3 rotates, drawing air into the main body through the air inlet of the dust collection chamber. The external force drives the output shaft 81 to rotate. The filter screen 7, which is set on the output shaft 81, rotates synchronously during the process of filtering dust and impurities in the airflow into the main body 1. Under the action of centrifugal force, the dust and impurities adhering to the filter screen 7 are thrown off. This setting achieves self-cleaning of the filter screen 7, avoids the filter screen 7 from reducing its filtration performance due to the adhesion of dust or impurities, reduces the number of times the filter screen 7 needs to be replaced and removed for cleaning, improves the user experience, reduces the power consumption of the vacuum cleaner, and is conducive to energy conservation and environmental protection.

[0059] In this embodiment, the dust and dirt separation device also includes a power unit that acts on the output shaft. In this embodiment, the power unit is a pneumatic fan blade 6, and the mounting hole of the output shaft 81 passes through the output shaft 81.

[0060] As an alternative implementation, the power unit may be omitted, and the output shaft may be driven to rotate directly by manual means. As another alternative implementation, the power unit may be a motor or a handle.

[0061] In this embodiment, the output shaft 81 is coaxially arranged with the rotating shaft of the vacuum motor 2. A filter screen 7 and a pneumatic fan blade 6 are respectively mounted on the output shaft 81. The pneumatic fan blade 6 includes multiple blades evenly arranged around the output shaft 81, which can drive the output shaft 81 to rotate under the action of airflow. In this embodiment, the airflow flows from the outside into the dust separation device under the action of the vacuum motor 2 and the impeller 3. In this embodiment, the edge of the filter screen 7 abuts against the inner edge of the opening and is movably connected, allowing the filter screen 7 to rotate relative to the opening.

[0062] In this embodiment, the structure of the filter screen 7 itself is not overly limited. Along the longitudinal section of the filter screen 7, its cross-sectional shape can be linear, triangular, or arc-shaped. Structurally, the filter screen 7 can be a simple sheet structure or a closed structure with a hollow core. As a preferred embodiment, the filter screen 7 is planar. As an alternative embodiment, the filter screen 7 can also be conical.

[0063] When the vacuum motor 2 is turned on, the impeller 3 rotates, and the external force drives the output shaft 81 to rotate. The filter screen 7, mounted on the output shaft 81, rotates synchronously during the process of filtering dust and impurities from the airflow into the main body 1. Under the action of centrifugal force, the dust and impurities adhering to the filter screen 7 are thrown off. This design achieves self-cleaning of the filter screen 7, preventing the filter screen 7 from losing its filtration performance due to dust or impurities, reducing the frequency of filter screen 7 replacement and cleaning, and improving the user experience. Furthermore, the rotation of the filter screen 7 does not require an additional power source, reducing the vacuum cleaner's power consumption and contributing to energy conservation and environmental protection. Simultaneously, the edge of the filter screen 7 abuts against the opening of the dust collection chamber 4 connecting to the main body 1, preventing dust and impurities from entering the main body 1 and ensuring the complete operation of the filter screen 7.

[0064] In this embodiment, the pneumatic fan blade 6 is disposed between the filter screen 7 and the impeller 3. This arrangement makes the pneumatic fan blade 6 adjacent to the impeller 3, improving the air intake efficiency of the pneumatic fan blade 6, thereby increasing the rotational speed of the output shaft 81 and the filter screen 7, and improving the self-cleaning ability of the filter screen 7 for dust accumulation.

[0065] As an alternative implementation, the pneumatic fan blade 6 can be positioned at the end of the output shaft 81 facing away from the impeller 3, so that the filter screen 7 is positioned between the starting fan blade and the impeller 3.

[0066] The location of the air inlet 5 on the dust collection chamber 4 is not strictly limited; it can be located on the axis of the dust collection chamber 4 or offset from the axis. In a preferred embodiment, the axis of the air inlet 5 coincides with the axis of the filter screen 7. This arrangement shortens the path of airflow into the filter screen 7, improving filtration efficiency.

[0067] As an alternative implementation, the axis of the air inlet 5 can also be staggered with the axis of the filter screen 7.

[0068] In this embodiment, an inner cylinder 13 is provided on the inner wall of the main body 1, and a filter screen support is provided on the inner wall of the inner cylinder 13. The diameter of the filter screen 7 is larger than the diameter of the inner cylinder 13. Through the above arrangement, the area of ​​the inner cylinder 13 is covered, thereby preventing dust and dirt from entering the interior of the main body 1 and causing pollution to the interior of the main body 1.

[0069] In this invention, the main body 1 includes a first main body 11 and a second main body 12. The first main body 11 and the second main body 12 are cylinders with the same diameter. The connection method between the first main body 11 and the second main body 12 is not limited. They can be connected by snap-fit, or a fixing strip can be provided on the outside of the connection seam between them to connect the first main body 11 and the second main body 12 into one unit.

[0070] In this embodiment, the vacuum motor 2 is disposed in the first body 11, the second body 12 is connected to the dust collection chamber 4 and is detachably connected to the first body 11, and the filter support 8 is disposed in the second body 12. As a further alternative embodiment, the first body 11 and the second body 12 may also be integrally formed.

[0071] The inner cylinder 13 and outer wall of the first main body 11 are respectively provided with a plurality of exhaust holes 111 at corresponding positions on the side walls. The plurality of exhaust holes 111 are evenly arranged in a rectangular concentrated area. Clean air after the external airflow has been filtered to remove dust or impurities can be discharged from the exhaust holes 111. Since the exhaust holes 111 are located on the side walls of the first main body 11, the air outlet angle is adjusted to avoid exhausting towards the user, thereby improving the user experience. As an alternative implementation, the exhaust holes 111 can also be located in other positions of the main body 1, such as on the bottom wall of the second main body 12 or the first main body 11.

[0072] Furthermore, a vacuum motor mounting portion 14 is provided on the first main body 11. In this embodiment, the vacuum motor mounting portion 14 is a groove provided on the inner wall of the first main body 11. The groove is provided on the extension line of the output shaft 81, and one end of the vacuum motor 2 is fixed to the groove by an interference fit. By providing the groove, the stability of the vacuum motor 2 can be achieved, and the shaking of the vacuum motor 2 can be avoided. As an alternative implementation, the vacuum motor mounting portion 14 can also be a vacuum motor 2 support structure provided inside the first main body 11.

[0073] In this embodiment, a connecting sleeve 71 is provided on the side of the filter screen 7 near the filter screen bracket 8, and the connecting sleeve 71 is adapted to connect the output shaft 81.

[0074] Specifically, the connecting sleeve 71 is positioned on the axis of the filter screen 7 and extends towards the vacuum motor 2. The connection method between the connecting sleeve 71 and the output shaft 81 is not strictly limited; it can be an interference fit, a threaded connection, or a connection can be made by drilling holes in both the connecting sleeve 71 and the output shaft 81 and inserting pins into the holes.

[0075] The filter screen 7 includes an open area and a non-open area, with the open area located inside the non-open area.

[0076] Several through holes are provided in the opening area. Along the direction away from the center of the filter screen 7, the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen 7 gradually increases.

[0077] In this embodiment, the specific structure of the filter screen 7 is not limited, and it can have through holes within its overall diameter. In a preferred embodiment, the filter screen 7 includes an open area and a non-open area, with the open area located inside the non-open area. Specifically, the non-open area itself has a ring-shaped structure.

[0078] The shape of the through-hole itself is not limited; it can be a circular hole or a non-circular hole structure, as long as it can effectively block dust and dirt. Simultaneously, the axis of the through-hole on the filter screen 7 is not limited; the axis of the through-hole can be parallel to the longitudinal axis of the filter screen 7. As a preferred embodiment, the angle between the longitudinal axis of the through-hole and the longitudinal axis of the filter screen 7 gradually increases along the direction away from the center of the filter screen 7. By setting the axis of the through-hole in this way, the through-hole itself can be offset from the direction of dust and dirt movement by a certain angle, preventing dust and dirt from directly entering the through-hole and causing blockage.

[0079] The dust and dirt separation device also includes a motor filter 31, which is disposed on the impeller 3 near one end of the filter support 8. Specifically, the motor filter 31 is fixedly connected to one end of the impeller 3, and when the impeller 3 rotates, the motor filter 31 will move synchronously with the impeller 3. In this embodiment, the motor filter 31 is a HEPA high-efficiency filter 7.

[0080] This embodiment also provides a vacuum cleaner, including: the aforementioned dust and dirt separation device, a suction pipe 9, and a vacuum cleaner head 10. One end of the suction pipe 9 is connected to the air inlet 5 of the dust and dirt separation device, and the vacuum cleaner head 10 is connected to the other end of the suction pipe 9.

[0081] When the dust and dirt separation device is started, the vacuum motor 2 works to generate negative pressure. The negative pressure will suck the dust and dirt into the dust and dirt separation device through the vacuum cleaner head 10 and the vacuum pipe 9, thereby realizing the collection of the dust and dirt itself.

[0082] In this embodiment, as Figure 1 As shown, a handle can be directly installed on the dust and dirt separation device to form a handheld vacuum cleaner. When vacuuming is needed, the user can simply hold the handle to perform the vacuuming operation. As a variation, the dust and dirt separation device can be installed in the vacuum bin. In this case, the user holds the vacuum hose 9, and the dust and dirt generated during the cleaning process will enter the vacuum bin for collection. At the same time, the vacuum bin is equipped with wheels to move with the user.

[0083] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A dust and dirt separation device, characterized in that, include: The main body (1) is equipped with a vacuum motor (2). The impeller (3) is mounted on the vacuum motor (2); A dust collection chamber (4) is provided on the main body (1), and an air inlet (5) is provided on the dust collection chamber (4). A filter support (8) is provided in the main body (1). An output shaft (81) is provided on the filter support (8). A filter (7) is provided on the output shaft (81). The output shaft (81) is adapted to drive the filter (7) to rotate. The power unit acts on the output shaft (81). The power unit is a pneumatic fan (6). The mounting hole of the pneumatic fan (6) passes through the output shaft (81). The pneumatic fan (6) includes multiple blades evenly arranged around the output shaft (81) and is used to drive the output shaft (81) to rotate under the action of airflow. The airflow flows from the outside into the dust and dirt separation device through the air inlet (5) under the action of the vacuum motor (2) and the impeller (3).

2. The dust and dirt separation device according to claim 1, characterized in that, The pneumatic fan blade (6) is disposed between the filter screen (7) and the impeller (3).

3. The dust and dirt separation device according to any one of claims 1-2, characterized in that, The axis of the air inlet (5) is set to coincide with the axis of the filter screen (7).

4. The dust and dirt separation device according to any one of claims 1-2, characterized in that, The inner wall of the main body (1) is provided with an inner cylinder (13), the filter support (8) is provided on the inner wall of the inner cylinder (13), and the diameter of the filter (7) is larger than the diameter of the inner cylinder (13).

5. The dust and dirt separation device according to claim 1, characterized in that, The main body (1) includes: The first body (11) is in which the vacuum motor (2) is disposed; The second body (12) is detachably connected to the first body (11), and the filter support (8) is disposed in the second body (12).

6. The dust and dirt separation device according to claim 5, characterized in that, The first body (11) has an exhaust hole (111) on its side wall.

7. The dust and dirt separation device according to claim 5, characterized in that, The first main body (11) is provided with a vacuum motor mounting part (14).

8. The dust and dirt separation device according to claim 5, characterized in that, The vacuum motor mounting part (14) is a groove provided on the inner wall of the first main body (11).

9. The dust and dirt separation device according to claim 1, characterized in that, The filter screen (7) is provided with a connecting sleeve (71) on the side near the filter screen bracket (8), and the connecting sleeve (71) is adapted to connect the output shaft (81).

10. The dust and dirt separation device according to any one of claims 1-2, characterized in that, The filter screen (7) includes an open area and a non-open area, wherein the open area is located inside the non-open area.

11. The dust and dirt separation device according to claim 10, characterized in that, The opening area is provided with a number of through holes, and the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen (7) gradually increases along the direction away from the center of the filter screen (7).

12. The dust and dirt separation device according to claim 1, characterized in that, It also includes a motor filter (31), which is disposed on the impeller (3) at one end near the filter support (8).

13. The dust and dirt separation device according to claim 1, characterized in that, The dust collection chamber (4) is provided with an opening, and the main body (1) is connected to the dust collection chamber (4) through the opening. The edge of the filter screen (7) abuts against the inner edge of the opening and is movably connected.

14. A vacuum cleaner, characterized in that, include: The dust and dirt separation device according to any one of claims 1-13; The suction pipe (9) is connected at one end to the air inlet (5) of the dust and dirt separation device; The vacuum cleaner head (10) is connected to the other end of the vacuum cleaner tube (9).

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