CN112656293A - Dirt and dust separating device and dust collector - Google Patents

Abstract

The invention provides a dust and dirt separating device and a dust collector, wherein an air inlet is arranged on the side wall of a dust collecting cavity; the air inlet pipe is arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collection cavity, the other end of the air inlet pipe is wound on the air inlet and extends to the air inlet, and the extending direction of at least one part of the air inlet pipe is overlapped with the tangent line of the corresponding part of the air inlet. Through setting up the intake pipe, it is through turning to around establishing on the air inlet to make the dirt that gets into in the dust collection chamber through the intake pipe can flow along the circumference in dust collection chamber, through foretell mode of setting up, make the dirt that enters into in the dust collection chamber can directly not remove towards the filter screen direction, thereby avoid dirt direct striking filter screen under high-speed state, cause the damage to the filter screen.

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

Vacuum cleaners are very common electrical appliances on the market. Through set up vacuum motor in vacuum cleaner, will carry with the dirty air suction of dirt inside the dust catcher, through the separation back, the dirt persists in vacuum cleaner the inside, and the clean air after the filtration is discharged to the external world.

In the prior art, in order to separate dust, a bag type separator or a cyclone separator is generally arranged inside a vacuum cleaner.

In the case of the bag-type separator, the main structure of the bag-type separator is a dust bag with filtering capability installed inside the dust collector, and the bag is provided with small holes for filtering out the particulate matters (dust and dirt) carried in the airflow passing through the dust bag. However, after a period of use, the small holes on the dust bag can be 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, and the use cost of a user is increased; the dirt separation efficiency is low. For the cyclone separator, the airflow carrying dust can form cyclone inside 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. However, the cyclone separator consumes a large vacuum pressure, requires a large vacuum motor power, and has a strong noise ratio during operation, which affects user experience.

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 operation of such separators, the dirt-laden air stream impinges directly on the discs. The large mass particles in the dirt will cause damage to the turntable and affect the balancing movement of the turntable.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the dirt separator in the prior art is easy to damage after being impacted by the airflow carrying the large-mass particles.

To this end, the present invention provides a dust and dirt separating apparatus comprising: a main body having a vacuum motor therein; the wind wheel is detachably arranged on the vacuum motor; the dust collecting cavity is arranged on the main body, an opening is formed in the dust collecting cavity, the main body is connected with the dust collecting cavity through the opening, 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 air inlet is arranged at the position of the side wall of the dust collection cavity; the air inlet pipe is arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collection cavity, the other end of the air inlet pipe is wound on the air inlet and extends to the air inlet, and the extending direction of at least one part of the air inlet pipe is overlapped with the tangent line of the corresponding part of the air inlet.

According to the dust and dirt separating device provided by the invention, the air inlet pipe comprises a straight pipe part; the straight pipe part is arranged at one end of the bent pipe part; and the bulge part is arranged at the other end of the bent pipe, is connected with the dust collection cavity, and is overlapped with the tangent line of the corresponding part of the air inlet.

According to the dust and dirt separating device provided by the invention, the axis of the protruding part along the length direction is parallel to the filter screen.

According to the dust and dirt separating device provided by the invention, the center of the filter screen is convexly arranged towards the direction of the air inlet.

The dust and dirt separating device provided by the invention is characterized in that the filter screen comprises an open area and a non-open area, and the open area is arranged in the non-open area.

According to the dust and dirt separating device provided by the invention, the 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.

The dust and dirt separating device provided by the invention further comprises a motor support arranged on the inner wall of the main body, and the rotating motor is arranged at the central position of the motor support.

According to the dust and dirt separating device provided by the invention, the inner wall of the main body is provided with the inner cylinder, the motor support is arranged on the inner wall of the inner cylinder, and the diameter of the filter screen is larger than that of the inner cylinder.

The invention provides a dust and dirt separating device, wherein the side wall of the main body is provided with an exhaust hole.

The invention provides a dust and dirt separating device, wherein a vacuum motor mounting part is arranged on a main body.

According to the dust and dirt separating device provided by the invention, the vacuum motor mounting part is a groove arranged on the side wall of the first main body.

The dust and dirt separating device provided by the invention further comprises a motor filter screen which is arranged at one end, close to the rotating motor, of the wind wheel.

The invention provides a dust collector, which comprises a dust and dirt separating device provided by the invention; one end of the dust collection pipe is connected with the position of an air inlet pipe of the dust and dirt separation device; and the dust collector head is connected to the other end of the dust collection pipe.

The invention provides a dust collector, which also comprises: the handle is connected to the dust collection cavity, and the axis of the straight pipe part of the air inlet pipe and the axis of the dust collection cavity belong to an intersecting straight line or a parallel straight line in space.

The technical scheme of the invention has the following advantages:

1. 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 air inlet pipe is arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collection cavity, the other end of the air inlet pipe is wound on the air inlet and extends to the air inlet, and the extending direction of at least one part of the air inlet pipe is overlapped with the tangent line of the corresponding part of the air inlet.

Through setting up the intake pipe, it is through turning to around establishing on the air inlet to make the dirt that gets into in the dust collection chamber through the intake pipe can flow along the circumference in dust collection chamber, through foretell mode of setting up, make the dirt that enters into in the dust collection chamber can directly not remove towards the filter screen direction, thereby avoid dirt direct striking filter screen under high-speed state, cause the damage to the filter screen.

Furthermore, because the dust and dirt are turned towards the inner wall of the dust collection cavity under the action of the air inlet pipe, the dust and dirt can be effectively prevented from entering the filter screen and blocking the filter screen. The setting mode enables the filter screen to keep lower wind resistance all the time, so that the power of the vacuum motor can be lower, the weight of the battery is reduced, the endurance time of the battery can be prolonged, the space occupied by the battery can be effectively reduced, and finally the dust and dirt separating device is beneficial to miniaturization and light weight.

More importantly, because the power of the vacuum motor is reduced, the noise generated by the vacuum motor in the working process can be effectively reduced, and the use experience of a user can be improved.

2. According to the dust and dirt separating device provided by the invention, the air inlet pipe comprises a straight pipe part; the straight pipe part is arranged at one end of the bent pipe part; and the bulge part is arranged at the other end of the bent pipe, is connected with the dust collection cavity, and is overlapped with the tangent line of the corresponding part of the air inlet.

Through the arrangement mode, the air flow flowing into the dust and dirt separating device through the straight pipe part can enter the dust collecting cavity through the protruding part and flows into the dust collecting cavity in a tangent state with the dust collecting cavity.

3. According to the dust and dirt separating device provided by the invention, the axis of the protruding part along the length direction is parallel to the filter screen.

Through foretell mode of setting up for the air current that flows through the bulge can not directly be used on the filter screen, thereby helps preventing dirt direct impact filter screen, causes the damage to the filter screen.

4. According to the dust and dirt separating device provided by the invention, the vacuum motor mounting part is a groove arranged on the side wall of the first main body. Through setting up the recess, can realize the stability of vacuum motor self, avoid vacuum motor to take place to rock.

5. According to the dust and dirt separating device provided by the invention, the 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.

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 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 a schematic view of a vacuum cleaner according to the present invention;

FIG. 2 is an exploded view of a dirt-and-dust separating apparatus provided in the present invention;

fig. 3 is a sectional view of a dirt-and-dust separating apparatus provided in the present invention.

Description of reference numerals:

1-a body; 11-a first body; 111-vent; 12-a second body; 13-inner cylinder; 14-vacuum motor mounting; 2-a vacuum motor; 3-wind wheel; 31-motor filter screen; 4-dust collecting chamber; 5-an air inlet; 51-an air inlet pipe; 6-rotating the motor; 61-a rotating shaft; 7-a filter screen; 71-connecting sleeves; 8-a motor bracket; 9-a dust suction pipe; 10-a vacuum cleaner head; 15-handle.

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.

Example 1

The present embodiment provides a dust and dirt separating apparatus, as shown in fig. 2 to 3, including:

a main body 1, inside which a vacuum motor 2 is arranged;

the wind wheel 3 is detachably arranged on the vacuum motor 2;

specifically, main part self adopts the columniform mode of setting, and vacuum motor 2 self is connected with external power supply, and the center of wind wheel 3 is connected on vacuum motor's output shaft, and the output shaft is connected with wind wheel 3's center detachably, and it can be connected through the interference mode, also can connect through the screw thread. When the wind wheel 3 rotates, negative pressure is generated in the main body, and external wind carries dust and dirt into the dust and dirt separating device;

further, in order to improve the filtering effect on dust, the dust and dirt separating device further comprises a motor filter screen 31 which is arranged at one end, close to the rotating motor 6, of the wind wheel 3. Specifically, motor filter screen 31 self and the one end mutual fixed connection of wind wheel 3, after wind wheel 3 took place to rotate, motor filter screen 31 will be along with wind wheel 3 synchronous motion.

The dust collecting cavity 4 is arranged on the main body, an opening is formed in the dust collecting cavity 4, the main body is connected with the dust collecting cavity 4 through the opening, and an air inlet 5 is formed in the dust collecting cavity 4;

specifically, the dust collecting chamber 4 and the main body may be detachably connected or may be connected by an integrated structure.

The main body and the dust collecting cavity 4 can be connected through a buckle, and particularly, the inner diameter of the main body is smaller than that of the dust collecting cavity 4, so that the main body can be nested into the dust collecting cavity 4.

In this embodiment, after the vacuum motor is started, a negative pressure is generated inside the vacuum motor, and the negative pressure further drives external dust and dirt to enter the dust collection cavity 4 through the air inlet 5.

A rotating motor 6 arranged in the main body, a rotating shaft 61 arranged on the rotating motor 6, a filter screen 7 arranged on the output shaft,

an air inlet 5 arranged at the side wall position of the dust collection chamber 4;

and the air inlet pipe 51 is arranged on the air inlet 5, one end of the air inlet pipe extends to the outside of the dust collection cavity 4, the other end of the air inlet pipe is wound and extends to the air inlet 5, and the extending direction of at least one part of the air inlet pipe 51 is overlapped with the tangent line of the corresponding part of the air inlet 5.

Through setting up intake pipe 51, it is around establishing on the air inlet through turning to make the dirt that gets into in the dust collection chamber through the intake pipe can flow along the circumference in dust collection chamber, through foretell mode of setting up, make the dirt that enters into in the dust collection chamber can directly not remove towards the filter screen direction, thereby avoid dirt direct striking filter screen under high-speed state, cause the damage to the filter screen.

In the present embodiment, the intake pipe 51 includes a straight pipe portion; the straight pipe part is arranged at one end of the bent pipe part; and the bulge is arranged at the other end of the bent pipe, the bulge is connected with the dust collection cavity, and the tangents of the corresponding parts of the bulge and the air inlet 5 are overlapped with each other.

Through the arrangement mode, the air flow flowing into the dust and dirt separating device through the straight pipe part can enter the dust collecting cavity through the protruding part and flows into the dust collecting cavity in a tangent state with the dust collecting cavity.

Further, in this embodiment, the axis of the protrusion along the length direction is parallel to the filter screen 7.

Through foretell mode of setting up for the air current that flows through the bulge can not directly be used on the filter screen, thereby helps preventing dirt direct impact filter screen, causes the damage to the filter screen.

In this embodiment, the shape of the filter 7 itself is not limited, and it may be provided in a plate-like structure, and as a preferable embodiment, the center of the filter 7 is provided to protrude toward the air inlet 5.

In this embodiment, through the center orientation of control filter screen 5 direction protrusions of air inlet set up, when the filter screen takes place to rotate, carry on dirty air current of dirt and flow out and enter into the inside back in dust collection chamber 4 in the intake pipe, can and the filter screen between bump, because the center of filter screen takes place to protrude, consequently the side of filter screen will be the obtuse angle setting with between the dirty flow direction of dirt, after the side of dirt and filter screen bumps, the filter screen will exert certain frictional force to the dirt, make the dirt follow the filter screen and move, the dirt can take place the diversion under the guide of filter screen simultaneously, under the effect of the rotation centrifugal force of filter screen, turn to the lateral wall in dust collection chamber 4 and move.

Through the combined arrangement mode that the extension direction of the central projection of the filter screen and at least one part of the air inlet pipe is controlled to be coincident with the tangent line of the corresponding part of the air inlet, the impact performance of dust entering the dust collection cavity to the filter screen can be effectively reduced, and the stability of the filter screen is effectively improved. Finally help making the filter screen keep lower windage always, consequently make the power of vacuum motor accomplish lower, and then reduced the weight of battery and can increase the time of endurance of battery to can reduce the occupied space of battery effectively, finally be favorable to dirt separator self miniaturization and lightweight.

In this embodiment, the shape of the filter screen 7 itself is not limited too much, and the cross-sectional shape of the filter screen may be triangular or circular arc-shaped along the longitudinal cross-section of the filter screen. From the structural point of view, the filter screen can be a simple sheet structure, and can also be a closed structure with a hollow shape. In a preferred embodiment, the angle between the tangent to the edge of the filter screen and the longitudinal axis is 45 degrees. In a most preferred embodiment, the filter screen is arranged in a conical shape.

In this embodiment, the arrangement of the through holes on the filter screen is not limited too much, and the through holes can be arranged within the whole diameter range. In a preferred embodiment, the filter screen includes an open area and a non-open area, and the open area is disposed inside the non-open area. Specifically, the non-perforated region itself has a ring-shaped structure.

The shape of the through hole is not limited, and the through hole can be a circular hole or a non-circular hole structure. As long as the blocking of the dirt itself can be achieved. Meanwhile, the axes of the through holes on the filter screen are not limited, and the axes of the through holes can be parallel to the longitudinal axis of the filter screen. In a preferred embodiment, an included angle between a longitudinal axis of the through hole and a longitudinal axis of the filter screen gradually increases in a direction away from the center of the filter screen. 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.

In this embodiment, in order to realize the connection operation of the filter screen, a connection sleeve 71 is disposed on one side of the filter screen close to the rotating motor 6, and the connection sleeve 71 is adapted to be connected to the output shaft.

Specifically, the connection sleeve 71 extends toward the inside of the filter screen, which is disposed at the axial position of the filter screen. The connection mode between the connection sleeve 71 and the output shaft of the rotating motor 6 is not limited too much, and the connection mode can adopt tension fit, can also adopt threaded connection, and can also be connected by respectively punching holes in the connection sleeve 71 and the output shaft and then putting pins into the holes.

In the present embodiment, the position of the air inlet 5 on the dust collecting chamber 4 is not limited to a large amount, and it may be provided at the axial position of the dust collecting chamber 4 or may be provided offset from the axial position of the dust collecting chamber 4. As a preferred embodiment, as shown in fig. 2, the axis of the air inlet 5 and the axis of the filter screen are arranged to coincide with each other.

In this embodiment, still include motor support 8, set up on the inner wall of main part, motor support 8's central point puts and is provided with rotating motor 6.

Specifically, the motor bracket 8 and the axis of the main body are perpendicular to each other, a through hole is formed in the center of the motor bracket 8, and the rotating motor 6 is embedded into the through hole, so that the rotating motor 6 is installed. The motor support 8 can be integrally injection-molded with the main body and can also be separately connected in the later stage.

In this embodiment, an inner cylinder 13 is disposed on an inner wall of the main body, the motor bracket 8 is disposed on an inner wall of the inner cylinder 13, and a diameter of the filter screen is greater than a diameter of the inner cylinder 13.

By arranging the inner barrel 13, certain buffering and shock absorption effects can be achieved. An air separation chamber can be formed outside the inner barrel 13 through the inner barrel 13, and vibration transmitted from the inner barrel 13 is reduced through the air separation chamber, so that the vibration is prevented from being directly applied to the hand of a user, and normal use experience of the user is prevented from being influenced. In particular, the inner cylinder 13 itself is provided on the body in an integrally injection-moulded manner.

In this embodiment, in order to carry out the dismouting operation to vacuum motor and rotating electrical machines 6, be provided with the components of a whole that can function independently structure with main part self, the main part includes: a first body 11 in which the vacuum motor is disposed; a second body 12 detachably coupled to the first body 11, the rotating motor 6 and the motor bracket 8 being provided in the second body 12.

Specifically, the connection mode between the first body 11 and the second body 12 is not limited, and the connection mode may be performed by a snap, or a fixing strip may be provided outside a connection seam between the first body 11 and the second body 12, and the first body 11 and the second body 12 may be connected into a whole by the fixing strip.

In this embodiment, the first body 11 is provided with the exhaust hole 111, and the air entering the inside of the first body can be rapidly exhausted by the exhaust hole 111, so that the balance between the internal air pressure and the external air pressure is facilitated. The exhaust hole 111 may be formed in a side wall of the first body 11, or may be formed at a position of the first body 11 opposite to the filter. As a preferred embodiment, the side wall of the first body 11 is provided with the air vent 111, and the air flowing out through the air vent 111 can be prevented from directly blowing on the hand of the user and affecting the use experience of the user by the above arrangement mode.

Further, in order to achieve the mounting stability of the vacuum motor inside the main body, the first main body 11 is provided with a vacuum motor mounting portion 14.

The arrangement of the vacuum motor mounting portion 14 is not limited to a large number, and in a preferred embodiment, the vacuum motor mounting portion 14 is a groove provided on a side wall of the first body 11. Specifically, the vacuum motor is embedded into the groove in a tight fit manner, so that stable installation is realized.

Example 2

The present embodiment provides a vacuum cleaner, as shown in fig. 1, including:

the dirt-and-dust separating apparatus provided in example 1;

one end of the dust collection pipe 9 is connected with the position of an air inlet pipe 51 of the dust and dirt separation device;

and a cleaner head 10 connected to the other end of the suction pipe 9. The cleaner head 10 itself comes into contact with a place where cleaning is required, such as a floor, a sofa, and a corner, and stores substances such as dust, debris, and hair in the surrounding environment. When the dust and dirt separating device is started, negative pressure is generated, the negative pressure sucks dust and dirt into the dust and dirt separating device through the dust suction pipe 9 through the dust collector head 10, and therefore the dust and dirt can be stored.

In this embodiment, as shown in fig. 1, a handle 15 may be directly disposed on the dirt-dust separating apparatus, so as to form a handheld vacuum cleaner, and when a user needs to perform a vacuum operation, the user may directly hold the handle by hand to perform the vacuum operation.

As a modification, the dust and dirt separating device may be provided in the dust suction bucket, and at this time, the user holds the dust suction pipe 9, and the dust and dirt generated during the cleaning process will enter the dust suction bucket to be collected, and at the same time, the dust suction bucket is provided with a roller to move along with the user.

In the embodiment, as shown in fig. 1 and 3, the dust collecting device further comprises a handle 15 connected to the dust collecting chamber, and the axis of the straight pipe part of the air inlet pipe 51 and the axis of the dust collecting chamber belong to an intersecting straight line or a parallel straight line in space.

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 therefrom are within the scope of the invention.

Claims (14)

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

a main body (1) provided with a vacuum motor (2) therein;

the wind wheel (3) is detachably arranged on the vacuum motor (2);

the dust collection chamber (4) is arranged on the main body, an opening is formed in the dust collection chamber (4), the main body is connected with the dust collection chamber (4) through the opening, and an air inlet (5) is formed in the dust collection chamber (4);

the rotating motor (6) is arranged in the main body, an output shaft is arranged on the rotating motor, and a filter screen (7) is arranged on the output shaft;

the air inlet (5) is arranged at the position of the side wall of the dust collection cavity (4);

the air inlet pipe (51) is arranged on the air inlet (5), one end of the air inlet pipe extends to the outside of the dust collection cavity (4), the other end of the air inlet pipe is wound on the air inlet (5) and extends to the air inlet, and the extending direction of at least one part of the air inlet pipe (51) is overlapped with the tangent line of the corresponding part of the air inlet (5).

2. Dust and dirt separating device according to claim 1, characterised in that the air inlet duct (51) comprises

A straight tube portion;

the straight pipe part is arranged at one end of the bent pipe part;

and the bulge is arranged at the other end of the bent pipe, the bulge is connected with the dust collection cavity, and the tangents of the corresponding parts of the bulge and the air inlet (5) are overlapped.

3. A dust-dirt separating arrangement according to claim 2, characterized in that the axis of the projection in the length direction is parallel to the filter screen (7).

4. A dust and dirt separating apparatus according to any one of claims 1-3, characterized in that the centre of the filter screen is arranged to project in the direction of the air inlet (5).

5. The dirt-and-dust separating apparatus of claim 4, wherein the filter screen includes an open area and a non-open area, the open area being disposed inside the non-open area.

6. The dirt-dust separating apparatus of claim 5, wherein a plurality of through holes are provided in the region of the opening, and the included angle between the longitudinal axis of the through holes and the longitudinal axis of the filter screen gradually increases in the direction away from the center of the filter screen.

7. The dust-dirt separating apparatus according to any one of claims 1-3, further comprising a motor bracket (8) disposed on an inner wall of the main body (1), wherein the rotating motor (6) is disposed at a central position of the motor bracket (8).

8. The dust-dirt separating apparatus according to claim 7, characterized in that an inner cylinder (13) is provided on an inner wall of the main body, the motor bracket (8) is provided on an inner wall of the inner cylinder (13), and the diameter of the filter screen is larger than that of the inner cylinder (13).

9. The dust and dirt separating apparatus of claim 1, wherein the main body is provided with a discharge hole (111) in a side wall thereof.

10. A dirt-and-dust separating apparatus according to any one of claims 1 to 3, characterised in that the main body is provided with a vacuum motor mounting portion (14).

11. The dirt-and-dust separating apparatus of claim 10, wherein the vacuum motor mounting portion (14) is a recess provided on a side wall of the first body.

12. The dust-dirt separating apparatus according to claim 1, further comprising a motor filter screen (31) disposed at an end of the wind wheel (3) adjacent to the rotating motor.

13. A dust collector is characterized by comprising

The dirt-and-dust separating apparatus of any one of claims 1 to 12;

one end of the dust collection pipe (9) is connected with an air inlet pipe (51) of the dust and dirt separation device;

and the dust collector head (10) is connected to the other end of the dust collection pipe (9).

14. The vacuum cleaner of claim 13, further comprising:

and the handle (15) is connected to the dust collection cavity (4), and the axis of the straight pipe part of the air inlet pipe (51) and the axis of the dust collection cavity (4) belong to an intersecting straight line or a parallel straight line in space.

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