A dust separation device and a vacuum cleaner

Abstract

The present invention provides a dust separation device and a dust collector, comprising: a main body, a vacuum motor with a wind wheel arranged inside; a dust collecting chamber arranged on the main body, an air inlet arranged on the dust collecting chamber; a rotating motor arranged at the air inlet front end of the wind wheel, an output shaft arranged on the rotating motor, a filter arranged on the output shaft; a dust shielding part arranged in the dust collecting chamber, the inner diameter of which gradually increases in the direction opposite to the rotating motor, and one end of the dust shielding part facing the rotating motor accommodates the filter, and the filter is suitable for rotating relative to the dust shielding part. This arrangement allows large dust particles to collide with the inner wall of the dust shielding part through which they pass, reduce kinetic energy and fall into the dust collecting chamber, thereby avoiding the destructive impact of large dust particles on the filter, and can also shake off dust adhered to the surface of the filter, thereby improving the filtering efficiency of the filter and effectively achieving complete filtering of the airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and particularly to a dust separation device and a vacuum cleaner. Background Art

[0002] Nowadays, with the continuous and rapid economic development and the continuous growth of consumers' income, especially the rapid growth of the income level of residents in large and medium-sized cities, the living conditions of residents have been continuously improved, and there are more and more large-area housing. The demand of residents for vacuum cleaners is also getting stronger.

[0003] As a common electrical device, a vacuum cleaner creates a negative pressure environment through an internal motor, sucks the air mixed with dust and dirt from the outside into the vacuum cleaner, and after filtration and separation, the dust and dirt remain in the vacuum cleaner, and the clean air is discharged to the outside. Usually, the dirt separator of a vacuum cleaner includes a porous bag separator or a cyclone separator.

[0004] However, after the porous bag separator is used for a period of time, the small holes on the dust collection bag will be quickly blocked by dirt, resulting in a decrease in the suction of the vacuum cleaner. After the dust collection bag is filled, the old bag needs to be thrown away and a new bag needs to be replaced, causing waste of resources and environmental pollution, increasing the user's usage cost, and having a low dirt separation efficiency. For the cyclone separator, the airflow carrying dust and dirt will form a cyclone inside the vacuum cleaner. Since the dust and dirt particles themselves have a relatively large mass, they will collide with the container wall by the action of centrifugal force and fall into the dust collection box, so as to achieve the purpose of separating dirt and air. However, the cyclone separator itself consumes a large vacuum pressure, requires a large power of the vacuum motor, and has a relatively strong noise during operation, affecting the user experience.

[0005] In the prior art, a dust separation device is provided, which includes a disk with small holes at the air outlet of the dust collection chamber and a motor for driving the disk to rotate. The disk is arranged to rotate around the rotation axis and includes holes for the cleaned airflow to pass through. The airflow carrying dirt enters the chamber and contacts the rotating turntable. The turntable applies a tangential force to the airflow, so the dirt carried in the airflow will move radially along the surface of the turntable towards the edge of the turntable. During this process, the airflow will flow out from the small holes in the turntable, and the dirt therein will continue to move towards the outer diameter edge due to its greater inertia and accumulate at the bottom of the chamber. Compared with the cyclone separator, this separator consumes less vacuum pressure and can be paired with a vacuum motor with smaller power and noise.

[0006] However, during the working process of this separator, all the dirt will impact the turntable following the airflow, and the larger particles in the dirt will cause scratches on the turntable, affecting the normal operation of the turntable. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect that large particle dirt impacts and damages the turntable during the operation of the dust separator in the prior art, so as to provide a dust separation device and a vacuum cleaner.

[0008] The present invention also provides a dust separation device, including: a main body, inside which a vacuum motor with a wind wheel is arranged;

[0009] a dust collection chamber, arranged on the main body, and an air inlet is arranged on the dust collection chamber;

[0010] a rotation motor, arranged at the air inlet front end of the wind wheel, an output shaft is arranged on the rotation motor, and a filter screen is arranged on the output shaft;

[0011] a dust blocking part, arranged in the dust collection chamber, with an inner diameter gradually increasing in the direction away from the rotation motor, and the end thereof facing the rotation motor accommodates the filter screen, and the filter screen is adapted to rotate relative to the dust blocking part.

[0012] The air inlet is arranged on the side wall of the dust collection chamber, and a flow guide plate is arranged in the air inlet, which is adapted to adjust the extending direction of the air inlet to be tangent to the inner side wall of the dust collection chamber.

[0013] A wind passing channel is arranged on the dust collection chamber, the wind passing channel connects the end of the dust blocking part facing the rotation motor, and extends to the end of the dust collection chamber and communicates with the main body, and the rotation motor is arranged therein.

[0014] A limiting ring groove is arranged on the wind passing channel, which is adapted to accommodate the filter screen and is arranged adjacent to the filter screen.

[0015] The limiting ring groove is arranged at the end of the wind passing channel facing the dust blocking part, and its opening is arranged in the direction away from the rotation motor.

[0016] A motor support is arranged at the end of the wind passing channel facing the main body, and the motor support is adapted to fix the rotation motor.

[0017] The motor support includes a fixing part and a plurality of support columns. The fixing part is arranged in a cylindrical shape and is in interference connection with the rotation motor. The support columns are uniformly arranged along the circumference of the fixing part and connect the fixing part and the inner wall of the wind passing channel.

[0018] An annular shielding part is further arranged on the dust blocking part, and the annular shielding part is arranged at the end of the dust blocking part far from the rotation motor and is connected with the inner wall of the dust collection chamber.

[0019] The filter screen includes an opening area and a non-opening area, and the opening area is arranged inside the non-opening area.

[0020] A plurality of through holes are provided in the opening area, and along the direction away from the center of the filter screen, the included angle between the longitudinal axis of the through hole and the longitudinal axis of the filter screen gradually increases.

[0021] A connecting sleeve is provided on one side of the filter screen facing the rotating motor, and the connecting sleeve is adapted to connect to the output shaft.

[0022] An inner cylinder is further provided on the main body, which is connected to the air passing channel, and the inner diameter of the inner cylinder is equal to the inner diameter of the air passing channel.

[0023] Exhaust holes are further provided on the inner cylinder and the outer wall of the main body, and the exhaust holes on the inner cylinder are arranged adjacent to the wind wheel.

[0024] A vacuum motor mounting portion is further provided on the main body, which is adapted to fix the vacuum motor.

[0025] The vacuum motor mounting portion is a groove provided on the inner wall of the end of the main body.

[0026] At least the dust blocking portion, the filter screen, the output shaft and the wind wheel are arranged along the same axis.

[0027] The dust collection chamber includes a dust collection cylinder and a dust collection cover which are detachably connected.

[0028] The present invention further provides a vacuum cleaner, comprising: the above-mentioned dust and dirt separation device;

[0029] A suction pipe, one end of which is connected to the air inlet position of the dust and dirt separation device;

[0030] A vacuum cleaner head, which is connected to the other end of the suction pipe.

[0031] The technical solution of the present invention has the following advantages:

[0032] 1. The present invention provides a dust and dirt separation device, comprising: a main body, inside which a vacuum motor with a wind wheel is provided; a dust collection chamber, which is provided on the main body, and an air inlet is provided on the dust collection chamber; a rotating motor, which is provided at the air inlet front end of the wind wheel, an output shaft is provided on the rotating motor, and a filter screen is provided on the output shaft; a dust blocking portion, which is provided in the dust collection chamber, and the inner diameter gradually increases along the direction away from the rotating motor, and the end of it facing the rotating motor accommodates the filter screen, and the filter screen is adapted to rotate relative to the dust blocking portion.

[0033] By separating the filter screen from the dust-blocking part and only driving the filter screen to rotate by the rotating motor, when the external air flow flows into the filter screen from the side wall of the dust collection cavity, under the action of the vacuum motor with a wind wheel, it forms a circulating flow towards the filter screen. On the one hand, large particle dust and dirt particles in the air flow will move towards the outside of the circulating flow under the action of centrifugal force. Since the inner diameter of the dust-blocking part gradually decreases towards the direction of the rotating motor, the dust and dirt will collide with the inner wall of the dust-blocking part it passes through, reducing the kinetic energy and falling into the dust collection cavity, avoiding the destructive impact of large particle dust and dirt on the filter screen. On the other hand, since the filter screen is separated from the dust-blocking part and only the filter screen is driven to rotate by the rotating motor, the energy consumption is reduced, and the dust and dirt adhered to the surface of the filter screen can be shaken off, improving the filtering efficiency of the filter screen and effectively achieving the complete filtration of the air flow.

[0034] 2. For the dust and dirt separation device provided by the present invention, the air inlet is arranged on the side wall of the dust collection cavity, and a guide plate is arranged in the air inlet, which is suitable for adjusting the extending direction of the air inlet to be tangent to the inner side wall of the dust collection cavity.

[0035] With such a setting, after the air flow flows into the dust collection cavity, under the negative pressure action of the vacuum motor, a circulating flow towards the filter screen will be formed, and the center of the circulating flow is the axis where the output shaft is located. In this way, large particle dirt moves towards the inner wall direction of the dust collection cavity under the action of centrifugal force and is blocked by the dust-blocking part, staying in the dust collection cavity, reducing the impact of large particle dirt on the filter screen and ensuring the filtering performance of the filter screen.

[0036] 3. For the dust and dirt separation device provided by the present invention, a limiting ring groove is arranged on the air passage, which is suitable for accommodating the filter screen and being closely arranged with the filter screen.

[0037] By setting the limiting ring groove and accommodating the filter screen in the limiting ring groove, it can prevent the dust and dirt existing in the flowing air in the air passage from passing through the gap between the filter screen and the inner wall of the air passage and entering the main body, playing a role in supplementary sealing.

[0038] 4. For the dust and dirt separation device provided by the present invention, the limiting ring groove is arranged at one end of the air passage facing the dust-blocking part, and its opening is arranged along the direction away from the rotating motor.

[0039] Since the air passage is connected to the end with the smallest inner diameter of the dust-blocking part, such a setting provides space for the installation of the filter screen on the basis of ensuring the effect of supplementary sealing of the limiting ring groove, facilitating the installation by the operator.

[0040] 5. For the dust and dirt separation device provided by the present invention, a number of through holes are arranged in the opening area, and along the direction away from the center of the filter screen, the included angle between the longitudinal axis of the through hole and the longitudinal axis of the filter screen gradually increases.

[0041] By setting the through-hole axis in such a way that the through-hole itself can deviate from the movement direction of the dust and dirt by a certain angle, it is possible to prevent the dust and dirt from directly entering the through-hole and causing blockage of the through-hole. Description of the Drawings

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 Schematic diagram of the three-dimensional structure of the dust and dirt separation device provided in the embodiment of the present invention;

[0044] Figure 2 is Figure 1 Exploded view of the internal structure of the dust and dirt separation device shown;

[0045] Figure 3 is Figure 2 Exploded view of the internal three-dimensional structure of the dust and dirt separation device shown;

[0046] Figure 4 is Figure 1 Schematic diagram of the three-dimensional structure of the dust and dirt separation device from another angle shown;

[0047] Figure 5 is Figure 4 Schematic diagram of the three-dimensional structure of the dust and dirt separation device from another angle shown;

[0048] Figure 6 is Figure 5 Schematic diagram of the three-dimensional structure of the dust and dirt separation device from another angle shown.

[0049] Explanation of the reference numerals:

[0050] 1 - Main body; 2 - Vacuum motor; 21 - Wind wheel; 3 - Dust collection chamber; 31 - Air inlet; 311 - Deflector; 32 - Air passage; 33 - Dust collection cylinder; 34 - Dust collection cover; 321 - Limit ring groove; 4 - Rotating motor; 41 - Output shaft; 5 - Filter screen; 6 - Dust blocking part; 51 - Connecting sleeve; 61 - Annular shielding part; 7 - Motor bracket; 71 - Fixed part; 72 - Support column; 11 - Exhaust hole; 12 - Inner cylinder; 13 - Vacuum motor mounting part. Detailed Embodiments

[0051] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] Such as Figure 1 - Figure 6 , this embodiment provides a dust separation device, including structures such as a main body 1, a dust collection chamber 3, a rotating motor 4, and a dust blocking part 6.

[0056] The main body 1 is arranged in a cylindrical shape, including an inner cylinder 12 arranged concentrically therein, and is fixed along one end. A vacuum motor 2 with a wind wheel 21 is arranged on the inner wall of the fixed end. When the vacuum motor 2 rotates, a negative pressure environment can be generated. The dust collection chamber 3 is connected to the main body 1 in a cylindrical shape. An air inlet 31 is arranged on the dust collection chamber 3. In this embodiment, the dust collection chamber 3 includes a dust collection cylinder 33 and a dust collection cover 34, and the two are detachably connected, specifically by screw connection, or can also be by snap or twist connection; a rotating motor 4 is arranged on the dust collection chamber 3, an output shaft 41 is arranged on the rotating motor 4, and a filter screen 5 arranged in a disc shape is arranged on the output shaft 41; a dust blocking part 6 is fixed in the dust collection chamber 3 in a cylindrical shape, and the inner diameter gradually increases along the direction away from the rotating motor 4, and the end facing the rotating motor 4 accommodates the filter screen 5, and the filter screen 5 can rotate relative to the dust blocking part 6. In this embodiment, the output shaft 41 is coaxially arranged with the rotating shaft of the vacuum motor 2.

[0057] By separating the filter screen 5 and the dust blocking part 6, and only driving the filter screen 5 to rotate by the rotating motor 4, when the external air flow flows into the filter screen 5 from the side wall of the dust collection chamber 3, under the action of the vacuum motor 2 with the wind wheel 21, it forms a circulating flow towards the filter screen 5. On the one hand, the large particle dust and dirt particles in the air flow will move towards the outside of the circulating flow under the centrifugal force. Since the inner diameter of the dust blocking part 6 gradually decreases towards the direction of the rotating motor 4, the air flow will collide with the inner wall of the dust blocking part 6 it passes through, reducing the kinetic energy and falling into the dust collection chamber 3, avoiding the destructive impact of large particle dust and dirt on the filter screen 5. On the other hand, since the filter screen 5 and the dust blocking part 6 are separated and only the filter screen 5 is driven to rotate by the rotating motor 4, the energy consumption is reduced, and the dust and dirt adhered to the surface of the filter screen 5 can also be thrown off, improving the filtering efficiency of the filter screen 5, and effectively realizing the complete filtration of the air flow.

[0058] The air inlet 31 is arranged on the side wall of the dust collection chamber 3. In this embodiment, a square air adjustment port is arranged in the air inlet 31, and a guide plate 311 arranged in an inclined plane shape is arranged therein, which can adjust the extension direction of the air inlet 31 to be tangent to the inner wall of the dust collection chamber 3. As a changeable implementation manner, the extension direction of the air inlet 31 can also pass through the axis where the output shaft 41 is located.

[0059] With such a setting, after the air flow flows into the dust collection chamber 3, under the negative pressure action of the vacuum motor 2, a circulating flow towards the filter screen 5 will be formed, and the center of the circulating flow is the axis where the output shaft 41 is located. In this way, the large particle dirt moves towards the inner wall direction of the dust collection chamber 3 under the centrifugal force and is blocked by the dust blocking part 6 or the inner wall of the dust collection chamber 3, staying in the dust collection chamber 3, reducing the impact of the large particle dirt on the filter screen 5, and ensuring the filtering performance of the filter screen 5.

[0060] In this embodiment, an air passage 32 is further provided on the dust collection chamber 3. The shape of the air passage 32 can be adjusted as needed. In this embodiment, it is in a straight cylinder shape, connecting one end of the dust blocking portion 6 facing the rotating motor 4 and extending to the end of the dust collection chamber 3 to communicate with the main body 1, and a rotating motor 4 is arranged therein. As a changeable embodiment, the air passage 32 can also be arranged in the main body 1, or the air passage 32 is not provided, and its internal structure is arranged in the dust blocking portion 6 or the main body 1.

[0061] A limiting ring groove 321 is provided on the air passage 32, which can accommodate the filter net 5 and is arranged adjacent to the filter net 5. After setting the limiting ring groove 321 and accommodating the filter net 5 in the limiting ring groove 321, it can prevent the dust and dirt existing in the flowing gas passing through the air passage 32 from passing through the gap between the filter net 5 and the inner wall of the air passage 32 and entering the main body 1, playing a role of supplementary sealing.

[0062] In this embodiment, the limiting ring groove 321 is arranged at one end of the air passage 32 facing the dust blocking portion 6, and its opening is arranged along the direction away from the rotating motor 4. As a changeable embodiment, the limiting ring groove 321 can be in a ring-shaped groove, with the opening facing the central axis of the air passage 32 and arranged in the middle of the air passage 32. Since the air passage 32 is connected to the end with the smallest inner diameter of the dust blocking portion 6, such a setting provides space for the installation of the filter net 5 on the basis of ensuring that the limiting ring groove 321 plays an effect of supplementary sealing, facilitating the installation by the operator.

[0063] One end of the air passage 32 facing the main body 1 is provided with a motor bracket 7, and the motor bracket 7 can fix the rotating motor 4.

[0064] The specific form of the motor bracket 7 is not limited, as long as it can meet the requirements of air passing and fixing the rotating motor 4. As a preferred embodiment, the motor bracket 7 includes a fixing portion 71 and a plurality of support columns 72. The fixing portion 71 is arranged in a cylindrical shape and is in interference connection with the rotating motor 4. The support columns 72 are uniformly arranged along the circumference of the fixing portion 71 and are connected to the inner wall of the fixing portion 71 and the air passage 32. Such a setting can ensure the stable support of the rotating motor 4 while reducing the blocking effect on the air flow and ensuring the stable flow of the air flow.

[0065] In addition, a circular shielding portion 61 is further provided on the dust blocking portion 6. The circular shielding portion 61 is arranged at one end of the dust blocking portion 6 away from the rotating motor 4 and is connected to the inner wall of the dust collection chamber 3. The setting of the circular shielding portion 61 can further shield the large particle dust and dirt moving to the inner wall of the dust collection chamber 3 under the action of centrifugal force, effectively avoiding the dust and dirt from hitting the filtering portion with the opening area and ensuring the stable filtering performance of the filter net 5.

[0066] The filter screen 5 is arranged in a disc shape. In this embodiment, no excessive limitation is imposed on the specific structure of the filter screen 5, and through holes can be formed within its overall diameter range. As a preferred embodiment, the filter screen 5 includes an opening area and a non-opening area, and the opening area is arranged inside the non-opening area. Specifically, the non-opening area itself is in a ring structure. A number of through holes are provided in the opening area, and along the direction away from the center of the filter screen 5, the included angle between the longitudinal axis of the through hole and the longitudinal axis of the filter screen 5 gradually increases. By setting the axis of the through hole in this way, the through hole itself can deviate from the movement direction of the dust and dirt by a certain angle, avoiding the direct entry of the dust and dirt into the through hole and causing blockage of the through hole.

[0067] A connecting sleeve 51 is arranged on one side of the filter screen 5 facing the rotating motor 4, and the connecting sleeve 51 is adapted to connect to the output shaft 41.

[0068] Specifically, the connecting sleeve 51 is arranged at the axis position of the filter screen 5 and extends towards the rotating motor 4. No excessive limitation is imposed on the connection method between the connecting sleeve 51 and the output shaft 41. It can adopt interference connection, can also adopt threaded connection, or can also be connected by respectively drilling holes in the connecting sleeve 51 and the output shaft 41 and then placing pins in the holes.

[0069] An inner cylinder 12 is further arranged inside the main body 1. The inner cylinder 12 is connected to the air passage 32, and the inner diameter of the inner cylinder 12 is equal to the inner diameter of the air passage 32. Such a setting ensures the smooth flow of air, avoids the impact of sudden air flow changes on the wind wheel 21, reduces noise and improves the service life of the wind wheel 21.

[0070] In addition, exhaust holes 11 are arranged on both the inner cylinder 12 and the outer wall of the main body 1, and the two exhaust holes 11 are arranged correspondingly for convenient exhaust. The exhaust holes 11 on the inner cylinder 12 are arranged adjacent to the wind wheel 21 for conveniently discharging clean air to the outside. In this embodiment, the exhaust holes 11 include a number of circular gap holes arranged in a uniform square pattern. As an alternative embodiment, the exhaust holes 11 can also be a number of uniform long holes. As another alternative embodiment, a grille or an outer cover structure can also be arranged outside the exhaust holes 11 as a dust blocking device in the non-working state.

[0071] A vacuum motor 2 mounting portion 13 is further arranged on the main body 1 to fix the vacuum motor 2. In this embodiment, the vacuum motor 2 mounting portion 13 is a groove arranged on the inner wall of the inner cylinder 12 facing away from the dust collection chamber 3. The groove is arranged on the extension line of the output shaft 41, and one end of the vacuum motor 2 is fixed to the groove by interference connection. By arranging the groove, the stability of the vacuum motor 2 itself can be achieved, avoiding the shaking of the vacuum motor 2. As an alternative embodiment, the vacuum motor 2 mounting portion 13 can also be a vacuum motor 2 bracket 7 structure arranged inside the main body 1.

[0072] At least the dust-proof part 6, the filter screen 5, the output shaft 41 and the wind wheel 21 are arranged along the same axis. As a preferred embodiment, in this embodiment, devices such as the main body 1, the installation part 13 of the vacuum motor 2, the inner cylinder 12, the rotation motor 4, the air passage 32, the limiting ring groove 321, and the motor bracket 7 are arranged on the same axis as the above structure. As a changeable embodiment, some structures in the main body 1, the installation part 13 of the vacuum motor 2, the inner cylinder 12, the rotation motor 4, the air passage 32, the limiting ring groove 321, and the motor bracket 7 may be arranged non-coaxially with other structures.

[0073] This embodiment also provides a vacuum cleaner, including: the above-mentioned dust separation device, a suction pipe, and a vacuum cleaner head. One end of the suction pipe is connected to the air inlet 31 of the dust separation device, and the vacuum cleaner head is connected to the other end of the suction pipe.

[0074] After the dust separation device is started, the vacuum motor 2 operates to generate negative pressure, and the negative pressure will suck the dust and dirt into the dust separation device through the suction pipe by the vacuum cleaner head, thereby realizing the storage of the dust and dirt itself.

[0075] In this embodiment, a handle can be directly provided on the dust separation device to form a handheld vacuum cleaner. When dust suction operation is required, the user can directly hold the handle to perform the dust suction operation. As a variant, the dust separation device can be arranged in a dust bucket. At this time, the user holds the suction pipe, and the dust and dirt generated during the cleaning process will enter the dust bucket for collection. At the same time, rollers are provided in the dust bucket to move along with the user.

[0076] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A dust separation device, characterized in that, Comprising: A main body (1) with a vacuum motor (2) having a wind wheel (21) disposed therein; A dust collection chamber (3) disposed on the main body (1), and an air inlet (31) is provided on the dust collection chamber (3); A rotating motor (4) disposed at the air inlet front end of the wind wheel (21), an output shaft (41) is provided on the rotating motor (4), and a filter net (5) is provided on the output shaft (41); A dust blocking portion (6) is disposed in the dust collection chamber (3), and its inner diameter gradually increases in the direction away from the rotating motor (4). One end thereof facing the rotating motor (4) accommodates the filter net (5). The filter net (5) is adapted to rotate relative to the dust blocking portion (6). The air inlet (31) is provided on the side wall of the dust collection chamber (3), and a flow guiding plate (311) is provided in the air inlet (31) and is adapted to adjust the extending direction of the air inlet (31) to be tangent to the inner side wall of the dust collection chamber (3).

2. The dust separation device according to claim 1, wherein An air passing channel (32) is provided on the dust collection chamber (3). The air passing channel (32) connects one end of the dust blocking portion (6) facing the rotating motor (4) and extends to the end of the dust collection chamber (3) to communicate with the main body (1), and the rotating motor (4) is provided therein.

3. The dust separation device according to claim 2, characterized in that, A limiting ring groove (321) is provided on the air passing channel (32) and is adapted to accommodate the filter net (5) and be disposed adjacent to the filter net (5).

4. The dust separation device according to claim 3, characterized in that, The limiting ring groove (321) is provided at one end of the air passing channel (32) facing the dust blocking portion (6), and its opening is disposed in the direction away from the rotating motor (4).

5. The dust separation device according to claim 4, characterized in that, One end of the air passing channel (32) facing the main body (1) is provided with a motor bracket (7), and the motor bracket (7) is adapted to fix the rotating motor (4).

6. The dust and dirt separation device according to claim 5, characterized in that The motor bracket (7) includes a fixing portion (71) and a plurality of support columns (72). The fixing portion (71) is provided in a cylindrical shape and is in interference connection with the rotating motor (4). The support columns (72) are uniformly arranged along the circumferential direction of the fixing portion (71) and connect the fixing portion (71) and the inner wall of the air passing channel (32).

7. The dust separation device according to claim 5 or 6, characterized in that, A circular shielding portion (61) is further provided on the dust blocking portion (6). The circular shielding portion (61) is provided at one end of the dust blocking portion (6) away from the rotating motor (4) and is connected to the inner wall of the dust collection chamber (3).

8. The dust separation device according to any one of claims 1, 5 - 6, characterized in that, The filter net (5) includes an opening area and a non-opening area, and the opening area is disposed inside the non-opening area.

9. The dust separation device according to claim 8, characterized in that, A plurality of through holes are provided in the opening area. Along the direction away from the center of the filter net (5), the included angle between the longitudinal axis of the through hole and the longitudinal axis of the filter net (5) gradually increases.

10. The dust and dirt separation device according to claim 9, characterized in that, A connecting sleeve (51) is provided on one side of the filter net (5) facing the rotating motor (4), and the connecting sleeve (51) is adapted to connect the output shaft (41).

11. The dust separation device according to claim 2, characterized in that, An inner cylinder (12) is further provided on the main body (1) and is connected to the air passing channel (32), and the inner diameter of the inner cylinder (12) is equal to the inner diameter of the air passing channel (32).

12. The dust separation device according to claim 11, wherein, An exhaust hole (11) is further provided on the outer wall of the inner cylinder (12) and the main body (1), and the exhaust hole (11) on the inner cylinder (12) is arranged adjacent to the wind wheel (21).

13. The dust separation device according to claim 12, characterized in that, A mounting portion (13) for the vacuum motor (2) is further provided on the main body (1), which is adapted to fix the vacuum motor (2).

14. The dust separation device according to claim 13, wherein The mounting portion (13) for the vacuum motor (2) is a groove provided on the inner wall of the end portion of the main body (1).

15. The dust separation device according to claim 1, characterized in that, At least the dust blocking portion (6), the filter screen (5), the output shaft (41) and the wind wheel (21) are arranged along the same axis.

16. The dust separation device according to claim 1, wherein, The dust collection chamber (3) includes a dust collection cylinder (33) and a dust collection cover (34) which are detachably connected.

17. A vacuum cleaner, characterized in that, Comprising The dust and dirt separation device according to any one of claims 1-16; A suction pipe, one end of which is connected to the air inlet (31) position of the dust and dirt separation device; A vacuum cleaner head, which is connected to the other end of the suction pipe.

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