CN112773247A - Dirt and dust separating device and dust collector - Google Patents

Abstract

The invention provides a dust and dirt separating device and a dust collector, comprising: 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 also comprises a dust blocking part, the inner diameter of the dust blocking part is gradually increased along the direction back to the rotating motor, and the edge of the filter screen back to the rotating motor is closely adjacent to the inner wall of the dust collection cavity. Set up like this and reduced the impact force of large granule filth to the filter screen, guaranteed the filtering quality of filter screen, simultaneously, set up annular shielding part on the inner wall of main part, can further shelter from the large granule dirt that moves to collection dirt intracavity wall under the centrifugal force effect, guarantee filter screen filtering quality's stability, and avoid leaking and strain, effectively realize filtering the air current completely.

Description

Dirt and dust separating device and dust collector

Technical Field

The invention relates to the technical field of dust collectors, in particular to a dust and dirt separating device and a dust collector.

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 working process of the separator, all the dirt can impact the rotary disc along with the airflow, and larger particles in the dirt can scrape the rotary disc to affect the normal work of the rotary disc.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that large-particle dirt impacts and damages a rotating disc in the working process of a dirt separator in the prior art, thereby providing a dirt-separating device and a dust collector.

The present invention also provides a dust-dirt separating apparatus, comprising: 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 still includes dust-retaining portion, dust-retaining portion along the dorsad rotation motor direction internal diameter crescent, the inner wall of main part still is provided with annular shielding portion, the interior border of annular shielding portion with the outer border next-door neighbour setting of dust-retaining portion.

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

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 closely adjacent to and arranged at intervals with the annular shielding part.

And a gap blocking part is also arranged on the inner wall of the annular shielding part and is arranged at the lower side of the dust blocking part and is suitable for blocking a gap between the dust blocking part and the annular shielding part.

The clearance blocking part is a dustproof brush.

The annular shielding portion includes: the outer edge of the horizontal part is connected with the inner wall of the main body;

and the vertical part is arranged on the inner edge of the horizontal part and is suitable for being connected with the dustproof hairbrush.

The vertical part is provided with a groove corresponding to the dustproof brush, and the dustproof brush is suitable for being embedded into the groove.

One side of the filter screen facing the rotating motor is provided with a connecting sleeve which 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 motor support includes fixed part and a plurality of support column, the fixed part be the cylindric setting, with the rotation motor interference is connected, and the support column is followed fixed part circumference evenly sets up, and connect the fixed part with the inner wall of main part.

Still be provided with the exhaust hole on the inner wall of main part, the exhaust hole with the vacuum motor adjacent setting.

An air outlet grid is also arranged on the exhaust hole.

The main body is also provided with a vacuum motor mounting part which is suitable for fixing the vacuum motor.

The dust and dirt separating device also comprises a motor filter screen which is arranged adjacent to the wind wheel and is arranged at the front end of the wind wheel along the air inlet direction.

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

The filter screen is arranged in a cup shape.

The invention also provides a dust collector which comprises 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 technical scheme of the invention has the following advantages:

1. the invention provides a dust and dirt separating device, comprising: 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 still includes dust-retaining portion, dust-retaining portion along the dorsad rotation motor direction internal diameter crescent, the inner wall of main part still is provided with annular shielding portion, the interior border of annular shielding portion with the outer border next-door neighbour setting of dust-retaining portion.

By arranging the dust blocking part with gradually changed inner diameter on the filter screen, and the edge of the dust blocking part is arranged close to the inner wall of the dust collection cavity, when the airflow with dust enters the dust collection cavity, the airflow can move towards the direction of the filter screen under the action of the vacuum motor with the wind wheel and collide with the inner wall of the dust blocking part, because the filter screen is fixedly connected with the output shaft of the rotating motor, the dust blocking part on the filter screen can rotate under the driving of the rotating motor, the airflow impacting the dust blocking part and the dust therein can change direction under the friction action and move along with the dust blocking part, and large-particle dust can be centrifuged during the movement process and move towards the direction of the inner wall of the dust collection cavity, and continuously collide with the dust blocking part to lose kinetic energy and stay in the dust collection cavity, so that the impact force of the large-particle dust on other parts on the filter screen is reduced by arranging the dust blocking part, and the filtering performance of the filter screen is, simultaneously, set up annular shielding part on the inner wall of main part, can further shelter from the large granule dirt that moves to collection dirt intracavity wall under the centrifugal force effect, effectively avoid the dirt striking to have the filter house of trompil region, guarantee filter screen filtering quality's stability, and avoid leaking straining, effectively realize filtering completely to the air current.

2. According to the dust and dirt separating device provided by the invention, the air inlet is arranged on the side wall of the dust collecting cavity.

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. According to the dust and dirt separating device provided by the invention, the clearance blocking part is a dustproof brush.

Through setting up dustproof brush, can block the large granule dirt that moves to the border position under the centrifugal force effect on the one hand, reduce the impact force to keeping off dirt portion, on the other hand, as supplementary sealing member, shelters from the clearance of annular shielding portion and collection dirt intracavity wall, prevents dirt from the clearance entering main part in, plays supplementary sealed effect.

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 description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an exploded view of a structure of a dirt-and-dust separating apparatus provided in an embodiment of the present invention;

FIG. 2 is an exploded sectional view of the structure of the dirt-and-dust separating apparatus shown in FIG. 1;

FIG. 3 is a schematic sectional view of the dust and dirt separating apparatus shown in FIG. 1;

FIG. 4 is a schematic cross-sectional perspective view of the dirt-separating device shown in FIG. 3;

description of reference numerals:

1-a body; 2-a vacuum motor; 3-dust collecting chamber; 31-an air inlet; 4-rotating the motor; 41-an output shaft; 5, filtering the filter screen; 51-a filter section; 52-dust blocking part; 12-an annular shield; 54-a connecting sleeve; 6-dustproof brush; 7-a motor bracket; 71-a stationary part; 72-support column; 11-exhaust hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

Referring to fig. 1-4, the present embodiment provides a dust and dirt separating apparatus, which includes a main body 1, a dust collecting chamber 3, a rotating motor 4, and a filter screen 5.

The main part 1 is the tube-shape setting, including the different first main part and the second main part of internal diameter, first main part and second main part integrated into one piece set up, are provided with uncovered in the second main part, and the inside vacuum motor 2 that has the wind wheel that sets up of first main part can produce the negative pressure when vacuum motor 2 rotates. The dust collecting cavity 3 is connected to the main body 1 in a cylindrical shape and is connected with the main body 1, and an air inlet 31 is arranged on the dust collecting cavity 3; the rotating motor 4 is arranged in the second main body, an output shaft 41 is arranged on the rotating motor 4, and a filter screen 5 is arranged on the output shaft 41; filter screen 5 is the cup setting, including dust-retaining portion 52, and dust-retaining portion 52 is along the back gradually-increasing of rotating motor 4 direction internal diameter, is provided with annular shielding portion 12 on the inner wall of second main part, and the interior border of annular shielding portion 12 sets up with the outer border next-door neighbour of dust-retaining portion 52, and in this embodiment, output shaft 41 sets up with vacuum motor 2's the rotation axis is coaxial.

By arranging the dust blocking part 52 with gradually changed inner diameter on the filter screen 5 and arranging the edge of the dust blocking part close to the inner wall of the dust collecting cavity 3, after the air flow with dust enters the dust collecting cavity 3, the air flow can move towards the filter screen 5 and collide with the inner wall of the dust blocking part 52 under the action of the vacuum motor 2 with a wind wheel, because the filter screen 5 is fixedly connected with the output shaft 41 of the rotating motor 4, the dust blocking part 52 on the filter screen 5 can rotate under the driving of the rotating motor 4, the air flow impacting the dust blocking part 52 and the dust therein can change directions under the friction action and move along with the dust blocking part 52, and large-particle dust can be centrifuged in the moving process, move towards the inner wall of the dust collecting cavity 3 and continue to collide with the dust blocking part 52, the kinetic energy is lost and stays in the dust collecting cavity 3, so that the impact force of the large-particle dust on the finished filter part 51 on the filter screen 5 is reduced by arranging the dust blocking part 52, guaranteed filter screen 5's filtration performance, simultaneously, set up annular shielding part 12 on the inner wall of main part 1, can further shelter from the large granule dirt that moves to the inner wall of dust collection chamber 3 under the centrifugal force effect, effectively avoid the dirty striking of dirt to have the regional filter unit 51 of trompil, guarantee filter screen 5 filtration performance's stability, and avoid leaking straining, effectively realize filtering the air current completely.

An air inlet 31 is provided in the side wall of the dust collecting chamber 3. In this embodiment the air inlet 31 is arranged tangentially along the inner wall of the dust collecting chamber 3. Alternatively, the inlet port 31 may extend in a direction that passes through the axis of the output shaft 41.

With the arrangement, after the airflow flows into the dust collection chamber 3, a circulation flow flowing towards the filter screen 5 can be formed under the negative pressure action of the vacuum motor 2, and the center of the circulation flow is the axis of the output shaft 41, so that large-particle dirt moves towards the inner wall direction of the dust collection chamber 3 under the centrifugal action, is blocked by the dust blocking part 52 or the inner wall of the dust collection chamber 3 and is left in the dust collection chamber 3, the impact of the large-particle dirt on the filter screen 5 is reduced, and the filtering performance of the filter screen 5 is ensured.

The filter screen 5 includes a filter portion 51 and a dust blocking portion 52.

The filter part 51 is arranged in a disc shape, is connected with the output shaft 41 and is vertically connected with the output shaft, and is provided with a plurality of perforated areas for filtering dust and dirt and allowing air flow to pass through; the dust-blocking portion 52 has a smaller inner diameter and is connected to the filter portion 51 at one end and to the annular shielding portion 12 at the other end.

In this embodiment, the inner wall of the annular shielding portion 12 is further provided with a gap blocking portion, in this embodiment, the gap blocking portion is an annular dustproof brush 6, and the dustproof brush 6 is disposed under the dust blocking portion 52 and is adjacent to the dust blocking portion 52. Through setting up dustproof brush 6, can block the large granule dirt that moves to the border position under the centrifugal force effect on the one hand, reduce the impact force to annular shielding part 12, on the other hand, as supplementary sealing member, shelter from annular shielding part 12 and the clearance that keeps off dirt portion 52 tip, prevent dirt from the clearance entering main part 1 in, play supplementary sealed effect. As an alternative embodiment, the gap blocking portion may be configured as a dust curtain or the like.

As an alternative embodiment, the dust-proof brush 6 may not be provided, but instead a sealing groove is provided on the inner wall of the main body 1 or the inner wall of the dust collecting chamber 3 for accommodating and rotating the dust blocking part 52.

In this embodiment, the specific structure of the filter part 51 is not limited to a large extent, and a through hole may be formed in the entire diameter range. In a preferred embodiment, the filter part 51 includes an open region and a non-open region, and the open region is provided inside the non-open region. 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 5 is gradually increased along the direction far away from the center of the filter screen 5. 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.

The side of the filter screen 5 facing the rotation motor 4 is provided with a coupling sleeve 54, the coupling sleeve 54 being adapted to couple with the output shaft 41.

Specifically, the connection sleeve 54 is provided at the axial position of the filter screen 5 and extends toward the direction of the rotating motor 4. The connection mode between the connection sleeve 54 and the output shaft 41 is not limited too much, and may be an interference connection, a screw connection, or a connection by punching holes in the connection sleeve 54 and the output shaft 41, respectively, and then placing pins in the holes.

The inner wall of the main body 1 is provided with a motor support 7, and the motor support 7 is suitable for fixing the rotating motor 4. The specific form of the motor support 7 is not limited, and it is enough to cross the wind and fix the rotating motor 4, as a preferred embodiment, the motor support 7 includes a fixing portion 71 and a plurality of supporting columns 72, the fixing portion 71 is in a cylindrical shape and is in interference connection with the rotating motor 4, and the supporting columns 72 are uniformly arranged along the circumferential direction of the fixing portion 71 and are connected with the fixing portion 71 and the inner wall of the main body 1. The arrangement ensures stable support of the rotating motor 4, reduces the blocking effect on the airflow and ensures stable flow of the airflow.

In this embodiment, the inner wall of the first main body is further provided with a plurality of vent holes 11 in the shape of oblong holes, and the vent holes 11 are arranged adjacent to the vacuum motor 2. The clean air after the external air flow is filtered to remove dust or impurities can be discharged from the exhaust hole 11. As an alternative embodiment, the venting hole 11 may also be provided at other locations of the body 1, such as on the bottom wall of the second body or the first body.

In this embodiment, the exhaust hole 11 is further provided with an air outlet grille, which can be opened or closed, and the air outlet grille can be closed when the dust and dirt separating device is not used, so as to prevent external dust or mosquitoes from entering. As an alternative embodiment, the outlet grille may not be provided.

The main body 1 is also provided with a vacuum motor 2 mounting part which is suitable for fixing the vacuum motor 2. In the present embodiment, the vacuum motor 2 mounting portion is a groove provided on the inner wall of the first body. The recess sets up on the extension line of output shaft 41, and vacuum motor 2 one end is fixed on the recess through the mode of interference connection, through setting up the recess, can realize the stability of vacuum motor 2 self, avoids vacuum motor 2 to take place to rock. As an alternative embodiment, the vacuum motor 2 mounting portion may also be a vacuum motor 2 bracket structure provided in the first body.

The dust and dirt separating device also comprises a motor filter screen 5 which is arranged adjacent to the wind wheel and is arranged at the front end of the wind wheel along the air inlet direction.

In this embodiment, dust collecting chamber 3 is the cylindric that the diameter is greater than main part 1, detachably registrates on main part 1, be convenient for to the clearance of the inside collection dirt in dust collecting chamber 3 and the maintenance of filter screen 5, also can be fixed through different connected modes such as buckle or screw, be the buckle connection in this embodiment, be provided with uncovered on the dust collecting chamber 3, main part 1 is connected with dust collecting chamber 3 through uncovered, be provided with air inlet 31 on the dust collecting chamber 3, in this embodiment, dust collecting chamber 3 comprises the dirt bowl cover that sets up air inlet 31 and the dust collecting chamber 3 body that sets up uncovered.

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 31 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 2 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 variations or modifications of the invention may be made without departing from the spirit or scope of the invention.

Claims (17)

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

the vacuum fan comprises a main body (1), wherein a vacuum motor (2) with a wind wheel is arranged in the main body;

the dust collection chamber (3) is arranged on the main body (1), and an air inlet (31) is arranged on the dust collection chamber (3);

the rotating motor (4) is arranged in the main body (1), an output shaft (41) is arranged on the rotating motor (4), and a filter screen (5) is arranged on the output shaft (41);

filter screen (5) still include dust-retaining portion (52), dust-retaining portion (52) along the dorsad rotation motor (4) direction internal diameter crescent, the inner wall of main part (1) still is provided with annular shielding portion (12), the interior border of annular shielding portion (12) with the outer border of dust-retaining portion (52) is close adjacent the setting.

2. Dust and dirt separating device according to claim 1, characterized in that the air inlet (31) is provided in a side wall of the dust collecting chamber (3).

3. The dirt-and-dust separating apparatus according to claim 2, wherein the filter net (5) comprises:

a filter part (51) which is connected with the output shaft (41) and is provided with a plurality of hole areas;

one end of the dust blocking part (52) is connected with the filtering part (51), and the other end of the dust blocking part is closely adjacent to and spaced from the annular shielding part (12).

4. Dust and dirt separating device according to claim 3, characterized in that the inner wall of the annular shield part (12) is further provided with a gap blocking part, which is arranged at the lower side of the dust shield part (52) and is adapted to block the gap between the dust shield part (52) and the annular shield part (12).

5. Dust and dirt separating device according to claim 4, characterized in that the gap stop is a dust brush (6).

6. Dirt-and-dust separating device according to claim 5, characterized in that the annular shield (12) comprises:

the outer edge of the horizontal part is connected with the inner wall of the main body (1);

and the vertical part is arranged on the inner edge of the horizontal part and is suitable for being connected with the dustproof hairbrush (6).

7. Dust and dirt separating device according to claim 6, characterized in that the vertical part is provided with a recess in a position corresponding to the dust brush (6), the dust brush (6) being adapted to be inserted into the recess.

8. Dust and dirt separating device according to any one of claims 1-7, characterized in that the side of the filter screen (5) facing the rotating motor (4) is provided with a coupling sleeve (54), which coupling sleeve (54) is adapted to be coupled to the output shaft (41).

9. Dust and dirt separating device according to claim 8, characterized in that a motor bracket (7) is arranged on the inner wall of the main body (1), said motor bracket (7) being adapted to fix the rotating motor (4).

10. The dust-dirt separating device according to claim 9, characterized in that the motor bracket (7) comprises a fixing portion (71) and a plurality of supporting columns (72), the fixing portion (71) is arranged in a cylindrical shape and is in interference connection with the rotating motor (4), and the supporting columns (72) are uniformly arranged along the circumferential direction of the fixing portion (71) and are connected with the fixing portion (71) and the inner wall of the main body (1).

11. Dust and dirt separating device according to claim 9 or 10, characterized in that the inner wall of the main body (1) is further provided with an exhaust hole (11), which exhaust hole (11) is arranged adjacent to the vacuum motor (2).

12. Dust and dirt separating device according to claim 11, characterised in that the air outlet grille is also arranged on the air outlet opening (11).

13. A dirt-and-dust separating apparatus according to claim 9, characterised in that the main body (1) is further provided with a vacuum motor (2) mounting portion adapted to secure the vacuum motor (2).

14. The dust-dirt separating apparatus according to claim 9, further comprising a motor filter screen (5) disposed adjacent to the wind wheel and at a front end of the wind wheel in an air intake direction.

15. A dust and dirt separating apparatus according to claim 1, wherein an opening is provided in the dust collecting chamber (3), and the main body (1) is connected to the dust collecting chamber (3) through the opening.

16. Dust and dirt separating device according to claim 1, characterized in that the filter screen (5) is cup-shaped.

17. A vacuum cleaner, comprising:

the dirt-and-dust separating apparatus of any one of claims 1 to 16;

one end of the dust collection pipe is connected with an air inlet (31) of the dust and dirt separation device;

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

Images