CN214712322U - Dirt and dust separating device and dust collector - Google Patents

Abstract

The utility model provides a pair of dirt separator and dust catcher, include: the vacuum motor with a wind wheel is arranged in the main body; the dust collecting cavity is arranged on the main body and is provided with an air inlet; the rotating motor is arranged in the main body, an output shaft is arranged on the rotating motor, and a filter screen is arranged on the output shaft; the filter screen also comprises a dust blocking part, and the inner diameter of the dust blocking part is gradually increased along the direction back to the rotating motor; and the bearing piece is arranged on the inner wall of the main body or the dust collection cavity and acts between the outer wall of the dust blocking part and the inner wall of the main body or the dust collection cavity. The bearing piece is connected with the edge of the filter screen and can be used as a supplementary sealing piece to shield the gap between the dust blocking part and the inner wall of the dust collecting cavity or the inner wall of the main body, so that dust and dirt are prevented from entering the main body from the gap, and the supplementary sealing effect is achieved.

Description

Dirt and dust separating device and dust collector

Technical Field

The utility model relates to a dust catcher technical field, concretely relates to dirt separator and dust catcher.

Background

Nowadays, economy continues to develop fast, and consumer income continues to increase, especially the rapid growth of big and middle-sized city resident income level, and resident's living condition constantly improves, and the large tracts of land housing is more and more, and the resident also is more and more strong to the demand of dust catcher.

Vacuum cleaner is as common electrical equipment, makes negative pressure environment through built-in motor, inhales the dust catcher with the air that the external world mixes dust and filth inside, through filtering and separation, dust and filth persist in the dust catcher, and clean air is discharged to the external world. Typical dirt separators for vacuum cleaners include porous bag separators or cyclonic separators.

However, after the porous bag type separator is used for a period of time, the small holes on the dust collecting bag are rapidly blocked by dirt, so that the suction force of the dust collector is reduced, after the dust collecting bag is filled, the old bag needs to be thrown away and replaced by a new bag, so that resource waste and environmental pollution are caused, the use cost of a user is increased, and the dirt separation efficiency is low. For the cyclone separator, the airflow carrying dust can form cyclone in the dust collector, and the dust particles have relatively large mass and can be in friction collision with the wall of the container and fall into the dust collecting box under the action of centrifugal force, so that the aim of separating the dust and air is fulfilled.

The prior art provides a dust and dirt separator comprising a foraminous disc at the air flow outlet of the collecting chamber and a motor for rotating the disc. The disk is arranged to rotate about an axis of rotation and includes apertures through which a cleaned airflow passes. The dirt-laden air stream enters the chamber and contacts the rotating turntable, which applies a tangential force to the air stream so that dirt entrained in the air stream moves radially along the surface of the turntable towards the edge of the turntable. During this process, the air flow will exit through the small holes in the turntable, and the dirt therein will continue to move towards the outer radial edge and collect at the bottom of the chamber due to its greater inertia. Compared with a cyclone separator, the separator consumes less vacuum pressure and can be matched with a vacuum motor with less power and noise.

However, in the operation of the separator, all the dirt can impact the rotating disc along with the airflow, and part of the dirt passes through the gap between the edge of the rotating disc and the inner wall of the dust collection cavity, so that the sealing performance is reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the dirt separator leakproofness poor among the prior art, the dirt is easy to follow the defect that the carousel clearance passes through to a dirt separator and dust catcher are provided.

The present embodiment provides a dirt-and-dust separating apparatus, including: the vacuum motor with a wind wheel is arranged in the main body;

the dust collecting cavity is arranged on the main body, and an air inlet is formed in the dust collecting cavity;

the rotating motor is arranged in the main body, an output shaft is arranged on the rotating motor, and a filter screen is arranged on the output shaft;

the filter screen comprises a dust blocking part, and the inner diameter of the dust blocking part is gradually increased along the direction back to the rotating motor;

and the bearing piece is arranged on the inner wall of the main body or the dust collection cavity and acts between the outer wall of the dust blocking part and the inner wall of the main body or the dust collection cavity.

The bearing piece is arranged at one end of the dust blocking part back to the rotating motor.

The filter screen includes:

the filtering part is connected with the output shaft and is provided with a plurality of hole areas;

one end of the dust blocking part is connected with the filtering part, and the other end of the dust blocking part is connected with the bearing piece.

The inner wall of the main body is also provided with a dust blocking step, and the dust blocking step is provided with the bearing piece.

The inner wall of the dust blocking step is provided with a plurality of convex parts.

The inner wall of the dust blocking step is provided with a support platform extending towards the center direction, and the support platform is arranged below the protruding portion.

A sealing ring is arranged between the dust blocking part and the bearing piece.

The air inlet is arranged on the side wall of the dust collection cavity.

A plurality of opening areas are arranged on the periphery of the dust blocking part.

An opening is arranged on the dust collection cavity, and the main body is connected with the dust collection cavity through the opening.

The inner side of the opening is provided with a dust cup clamping groove, and the main body is convexly provided with a plurality of dust cup buckles which are fixedly clamped with the dust cup clamping groove.

The filter part comprises the perforated area and a non-perforated area, and the perforated area is arranged inside the non-perforated area.

The filter screen is characterized in that a plurality of through holes are arranged in the opening area, and the included angle between the longitudinal axis of each through hole and the longitudinal axis of the filter screen is gradually increased along the direction far away from the center of the filter screen.

One side of the filter screen facing the rotating motor is provided with a connecting hole, and the connecting hole is suitable for being connected with the output shaft.

The inner wall of the main body is provided with a motor support, and the motor support is suitable for fixing the rotating motor.

The main body includes:

a first body in which the vacuum motor is built;

the second main part, the intercommunication sets up on the first main part, it has to embed rotating electrical machines.

The second main body and the first main body are arranged vertically along a central axis.

The second body is provided with an exhaust hole.

The filter screen is arranged in a cup shape.

The application provides a dust catcher includes:

the dust-dirt separating device;

one end of the dust collection pipe is connected to the air inlet of the dust and dirt separation device;

and the dust collector head is connected to the other end of the dust collection pipe.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of dirt separator, include: the vacuum motor with a wind wheel is arranged in the main body; the dust collecting cavity is arranged on the main body, and an air inlet is formed in the dust collecting cavity; the rotating motor is arranged in the main body, an output shaft is arranged on the rotating motor, and a filter screen is arranged on the output shaft; the filter screen comprises a dust blocking part, and the inner diameter of the dust blocking part is gradually increased along the direction back to the rotating motor; and the bearing piece is arranged on the inner wall of the main body or the dust collection cavity and acts between the outer wall of the dust blocking part and the inner wall of the main body or the dust collection cavity.

Through set up the dirt portion that keeps off that the internal diameter gradually changes on the filter screen, the air current that has dirt moves towards the filter screen direction under the vacuum motor effect in the main part to bump with the inner wall of dirt portion. Meanwhile, under the driving of the rotating motor, the dust blocking part on the filter screen rotates, and the airflow impacting the dust blocking part and dust in the airflow can change direction under the action of friction. The large-particle dust can be centrifuged in the moving process and moves towards the inner wall of the dust collection cavity, so that the probability of contact between the large-particle dust and the filter screen is reduced, and the large-particle dust is left in the dust collection cavity. In addition, because the bearing piece is used in the outer wall of dust blocking part with the main part or between the inner wall in dust collecting cavity, on the one hand can be as supplementary sealing member, shelter from the clearance between dust blocking part and dust collecting cavity inner wall or the main part inner wall, prevent dirt from getting into the main part from the clearance, play the sealed effect of replenishment, on the other hand, the setting of bearing piece can set up with rotation motor and output shaft cooperation, stabilize the rotation of filter screen, appear rocking under the exogenic action when avoiding the filter screen motion, the load of output shaft has been reduced, the stability of filter screen motion is improved.

2. The utility model provides a dirt separator, the air inlet sets up on the lateral wall in dust collection chamber.

The arrangement is that after the airflow flows into the dust collection chamber, circulation flowing towards the filter screen can be formed under the negative pressure action of the vacuum motor, and the center of the circulation is the axis of the output shaft, so that large-particle dirt moves towards the direction of the inner wall of the dust collection chamber under the centrifugal action, is blocked by the dust blocking part or the inner wall of the dust collection chamber and stays in the dust collection chamber, the impact of the large-particle dirt on the filter screen is reduced, and the filtering performance of the filter screen is ensured.

3. The utility model provides a dirt separator, dust-blocking portion week side is provided with a plurality of trompil regions.

The dust blocking part is provided with the hole opening area, so that the filtering area of the filter screen is increased, and the filtering efficiency of the filter screen is improved.

4. The utility model provides a dirt separator, be provided with a plurality of through-holes in the trompil region, follow and keep away from the center direction of filter screen, the longitudinal axis of through-hole with the contained angle of the longitudinal axis of filter screen increases gradually.

Through the mode of setting up to the through-hole axis for through-hole self can be relative the dirty direction of motion of dirt and deviate certain angle, avoid dirt direct entry to the through-hole in, cause the jam to the through-hole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a dust-dirt separating device provided in an embodiment of the present invention;

FIG. 2 is a schematic view showing an internal structure of the dirt-separating apparatus shown in FIG. 1;

FIG. 3 is an exploded view of the dust and dirt separating apparatus shown in FIG. 1;

FIG. 4 is a schematic perspective view of another angle of the dirt-separating device shown in FIG. 1;

FIG. 5 is a schematic top view of the dirt-separating apparatus shown in FIG. 4;

fig. 6 is a schematic structural view of the dust blocking step provided by the present invention.

Description of reference numerals:

1-a body; 11-a first body; 12-a second body; 2-a dust collection chamber; 21-an air inlet; 3-rotating the motor; 31-an output shaft; 4, filtering the filter screen; 41-a filter part; 42-dust blocking part; 43-sealing ring; 5-a bearing member; 13-dust blocking step; 131-a boss; 132-a support table; 14-fastening of the dust cup; 6-motor support.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply 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 limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

As shown in fig. 1 to 6, the present embodiment provides a dust and dirt separating apparatus including a main body 1 and a dust chamber 2.

Main part 1 includes first main part 11 and second main part 12, is mutually perpendicular's cylindrical setting, and first main part 11 inside is provided with the vacuum motor who is connected with the power, and the central cover of wind wheel is established in the axis of rotation of vacuum motor to can dismantle rather than and be connected, be threaded connection in this embodiment, also can be for interference connection etc. along with the work of wind wheel, the inside negative pressure environment that attracts the external dust impurity air current that has of production of dirt separator. As an alternative embodiment, the vacuum motor may not be provided, and a pressure device may be arranged in front of the air inlet to drive the air flow into the dust collecting chamber 2.

The dust collecting chamber 2 is also cylindrical and connected to the second body 12, and has an air inlet 21, and the external air flow is driven by the negative pressure to flow into the dust collecting chamber 2 from the air inlet 21, in this embodiment, the dust collecting chamber 2 is installed on the second body 12 and connected to the lower end of the second body 12.

The rotating motor 3 is arranged in the second main body 12, an output shaft 31 is arranged in the middle of the rotating motor, a filter screen 4 is arranged on the output shaft 31, in the embodiment, the output shaft 31 is arranged in the middle of the second main body 12 and is coaxial with the second main body 12, and the distance between the filter screen 4 and the inner wall of the main body 1 is the same, so that the filtering uniformity of the filter screen 4 is improved. In the present embodiment, the output shaft 31 is screwed to the filter screen 4.

The filter screen 4 also comprises a dust blocking part 42, and the inner diameter of the dust blocking part 42 is gradually increased along the direction back to the rotating motor 3;

in this embodiment, the ring-shaped bearing member 5 is disposed on the inner wall of the second body 12 and connected to the edge of the dust-blocking portion 42 facing away from the rotating motor 3, and as an alternative embodiment, the bearing member 5 may be disposed on the inner wall of the dust-collecting chamber 2 and movably connected to the dust-blocking portion 42 extending to the dust-collecting chamber 2.

By providing the dust blocking portion 42 with gradually changing inner diameter on the filter screen 4, the airflow with dust moves toward the filter screen 4 under the action of the vacuum motor in the main body 1, and collides with the inner wall of the dust blocking portion 42. Meanwhile, under the driving of the rotating motor 3, the dust blocking part 42 on the filter screen 4 rotates, and the airflow impacting the dust blocking part 42 and dust therein can change directions under the action of friction. The large-particle dust can be centrifuged in the moving process and moves towards the inner wall of the dust collection cavity 2, so that the probability of contact between the large-particle dust and the filter screen 4 is reduced, and the large-particle dust and the large-particle dirt are left in the dust collection cavity 2. In addition, owing to set up bearing spare 5 and be connected the setting with the border of filter screen 4, on the one hand can regard as supplementary sealing member, shelter from the clearance between dust retaining part 42 and the 2 inner walls in dust collection chamber or the 1 inner walls in main part, prevent dirt from getting into main part 1 from the clearance, play the sealed effect of replenishment, on the other hand, bearing spare 5's setting can set up with rotation motor 3 and output shaft 31 cooperation, stabilize filter screen 4's rotation, appear rocking under the exogenic action when avoiding filter screen 4 to move, the load of output shaft 31 has been reduced, the stability of filter screen 4 motion is improved.

In this embodiment, the bearing member is provided at an end opposite to the dust blocking portion from the rotating motor. As an alternative embodiment, the bearing element 5 can be arranged in the middle of the dust guard.

In the present embodiment, the air inlet 21 is arranged on the side wall of the dust collecting chamber 2, and as a preferred embodiment, the extending direction of the air inlet 21 is tangential to the inner wall of the dust collecting chamber 2.

With the arrangement, after the airflow flows into the dust collection chamber 2, a circulation flow flowing towards the filter screen 4 can be formed under the negative pressure action of the vacuum motor, and the center of the circulation flow is the axis of the output shaft 31, so that large-particle dirt moves towards the inner wall of the dust collection chamber 2 under the centrifugal action, is blocked by the dust blocking part 42 or the inner wall of the dust collection chamber 2 and is left in the dust collection chamber 2, the impact of the large-particle dirt on the filter screen 4 is reduced, and the filtering performance of the filter screen 4 is ensured.

Specifically, in the present embodiment, the filter screen 4 is provided in a cup shape, and includes a filter portion 41 and a dust blocking portion 42.

Wherein, the filter part 41 is arranged in a wafer shape, is connected with the output shaft 31, and is provided with a plurality of perforated areas for filtering dust and dirt and allowing air flow to pass through; the dust-blocking part 42 has a smaller inner diameter at one end connected to the filter part 41 and at the other end fixedly connected to the bearing member 5. In this embodiment, the filter portion 41 and the dust blocking portion 42 are coaxially disposed, so as to ensure uniform and stable filtering performance.

In addition, the side wall of the dust blocking portion 42 is provided with a plurality of opening areas. The dust blocking part 42 is provided with an opening area, so that the filtering area of the filter screen 4 is increased, and the filtering efficiency of the filter screen 4 is improved. As an alternative embodiment, the dust guard 42 may not be provided with an open area.

In the present embodiment, both the filter portion 41 and the dust blocking portion 42 include an open region and a non-open region, and the open region is disposed inside the non-open region. A plurality of through holes are arranged in the opening area, and the included angle between the longitudinal axis of each through hole and the longitudinal axis of the filter screen 4 is gradually increased along the direction far away from the center of the filter screen 4.

Specifically, the non-perforated region itself has a ring-shaped structure. A plurality of through holes are arranged in the opening area, and the included angle between the longitudinal axis of each through hole and the longitudinal axis of the filter screen 4 is gradually increased along the direction far away from the center of the filter screen 4. Through the mode of setting up to the through-hole axis for through-hole self can be relative the dirty direction of motion of dirt and deviate certain angle, avoid dirt direct entry to the through-hole in, cause the jam to the through-hole.

Furthermore, the end part of the larger inner diameter end of the dust blocking part 42 is provided with an annular sealing ring 43 and is fixed with the bearing piece 5 in a sealing way, so that the sealing performance is further improved, and dust and dirt are prevented from entering the main body 1 from the gap between the dust blocking part 42 and the bearing piece 5.

In this embodiment, the inner wall of the main body 1 is further provided with a dust blocking step 13 arranged in an annular shape, and the dust blocking step is provided with a bearing piece 5. The setting of hindering dirt step 13 can further shelter from the large granule dirt that moves to this department under the centrifugal force effect, effectively avoids the dirt striking to have the regional filter screen 4 of trompil, guarantees filter screen 4 filtering quality's stability.

In this embodiment, the inner wall of the dust-proof step is provided with a plurality of protrusions 131 for limiting the mounting of the bearing member, and as a changeable implementation, the protrusions 131 may also be slots or buckles disposed in cooperation with the bearing member 5.

The inner wall of the dust blocking step 13 is provided with a support base 132 extending toward the center direction, and the support base is disposed below the protruding portion 131.

In this embodiment, the top of the dust collecting chamber 2 is provided with an opening, and the second body 12 is detachably connected with the dust collecting chamber 2 through the opening. Specifically, the inner side of the opening is provided with a dust cup clamping groove, and the main body 1 is convexly provided with a plurality of dust cup buckles 14 which are clamped and fixed with the dust cup clamping groove. As an alternative embodiment, the dust collecting chamber 2 may be screwed to the second body 12 or may be formed integrally therewith.

In the present embodiment, the filter portion 41 is provided with a coupling hole at a side center portion toward the rotation motor 3, and the coupling hole is adapted to be coupled to the output shaft 31 by a coupling nut.

In addition, a motor bracket 6 is provided on the inner wall of the main body 1, and the motor bracket 6 is adapted to fix the rotating motor 3. In this embodiment, the bracket is a disk-shaped structure with a hole in the middle, and is connected with the rotating motor 3 in an interference manner. As an alternative embodiment, a radial stent may be provided.

A vacuum motor is arranged in the first main body 11; the second body 12 is provided in communication with the first body 11, and has a rotating motor 3 built therein. The second body 12 is arranged perpendicular to the first body 11 along the central axis. In this embodiment, the second body 12 is provided with a vent hole.

The present embodiment also provides a vacuum cleaner, including: the dust and dirt separating device, the dust suction pipe and the dust collector head are arranged on the base. One end of the dust suction pipe is provided with an air inlet 21 connected with the dust and dirt separating device, and the head of the dust collector is connected with the other end of the dust suction pipe.

After dirt separator starts, vacuum motor work produces the negative pressure, and the negative pressure will be through the dust catcher head with dirt through the dust absorption pipe inhale to dirt separator to the realization is to the accomodating of dirt self.

In the embodiment, the handle can be directly arranged on the dust and dirt separating device, so that the handheld dust collector is formed, and when dust collection operation is needed, a user can directly hold the handle by hands to realize the dust collection operation. As a variation, the dirt separator may be disposed in the dust suction barrel, and at this time, the user holds the dust suction pipe by hand, and dirt and the like generated during the cleaning process will enter the dust suction barrel to be collected, and at the same time, a roller is disposed in the dust suction barrel so as to move along with the user.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (20)

1. A dirt-and-dust separating apparatus, comprising:

the main body (1) is internally provided with a vacuum motor with a wind wheel;

the dust collection chamber (2) is arranged on the main body (1), and an air inlet (21) is arranged on the dust collection chamber (2);

the rotating motor (3) is arranged in the main body (1), an output shaft (31) is arranged on the rotating motor (3), and a filter screen (4) is arranged on the output shaft (31);

the filter screen (4) comprises a dust blocking part (42), and the inner diameter of the dust blocking part (42) is gradually increased along the direction back to the rotating motor (3);

and the bearing piece (5) is arranged on the inner wall of the main body (1) or the dust collection cavity (2) and acts between the outer wall of the dust blocking part (42) and the inner wall of the main body (1) or the dust collection cavity (2).

2. Dust and dirt separating device according to claim 1, characterized in that the bearing element (5) is arranged at the end facing away from the rotating motor (3) of the dust shield (42).

3. The dirt-and-dust separating apparatus according to claim 1, wherein the filter net (4) comprises:

the filter part (41) is connected with the output shaft (31) and is provided with a plurality of hole areas;

one end of the dust blocking part (42) is connected with the filtering part (41), and the other end of the dust blocking part is connected with the bearing piece (5).

4. A dust and dirt separating apparatus according to any one of claims 1 to 3, characterized in that the inner wall of the main body (1) is further provided with a dust blocking step (13), and the dust blocking step (13) is provided with the bearing member (5).

5. The dust-dirt separating device of claim 4, characterized in that the inner wall of the dust-blocking step (13) is provided with a plurality of protrusions (131).

6. The dust-dirt separating apparatus according to claim 5, characterized in that the inner wall of the dust-blocking step (13) is provided with a support stand (132) extending toward the center, the support stand being provided below the projection (131).

7. A dust and dirt separating apparatus according to claim 1 or 5, characterized in that a sealing ring (43) is further provided between the dust guard (42) and the bearing member (5).

8. Dust and dirt separating device according to claim 7, characterized in that the air inlet (21) is provided in a side wall of the dust collecting chamber (2).

9. The dirt-and-dust separating apparatus according to claim 8, characterized in that the dust guard (42) is provided with a plurality of perforated areas on the peripheral side thereof.

10. A dust and dirt separating apparatus according to claim 9, wherein an opening is provided in the dust collecting chamber (2), and the main body (1) is connected to the dust collecting chamber (2) through the opening.

11. The dust and dirt separating device of claim 10, wherein a dust cup slot is arranged on the inner side of the opening, and a plurality of dust cup buckles (14) are convexly arranged on the main body (1) and are fixedly clamped with the dust cup slot.

12. Dust and dirt separating device according to any one of claims 9-11, characterised in that the filter part (41) comprises said open area and a non-open area, said open area being arranged inside said non-open area.

13. Dust and dirt separating device according to claim 12, characterized in that a number of through holes are provided in the area of the opening, the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen (4) increasing in the direction away from the centre of the filter screen (4).

14. Dust and dirt separating device according to claim 12, characterized in that the side of the filter screen (4) facing the rotating motor (3) is provided with a connecting hole adapted to connect the output shaft (31).

15. Dust and dirt separating device according to claim 14, characterized in that a motor bracket (6) is arranged on the inner wall of the main body (1), said motor bracket (6) being adapted to fix the rotating motor (3).

16. Dust-and-dirt separating device according to claim 15, characterized in that the main body (1) comprises:

a first body (11) in which the vacuum motor is built;

and a second main body (12) which is communicated with the first main body (11) and is internally provided with the rotating motor (3).

17. Dust and dirt separating device according to claim 16, characterized in that the second body (12) is arranged perpendicular to the first body (11) along the centre axis.

18. Dust and dirt separating device according to claim 17, characterised in that the second body (12) is provided with a vent hole.

19. Dust and dirt separating device according to claim 1, characterized in that the filter screen (4) is cup-shaped.

20. A vacuum cleaner, comprising:

the dirt-and-dust separating apparatus of any one of claims 1 to 19;

one end of the dust collection pipe is connected with an air inlet (21) of the dust and dirt separation device;

and the dust collector head is connected to the other end of the dust collection pipe.

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