CN214712317U - Dirt and dust separating device and dust collector - Google Patents

Abstract

The utility model provides a dirt separator and dust catcher, include: 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 one end that the intake pipe enters into the dust collecting cavity is the closed form setting, set up the breach simultaneously on the lateral wall of intake pipe, can derive the inside dirt of intake pipe from the breach position, the tangent line that corresponds the position through at least partly extending direction and intake pipe of restriction baffle coincides each other, can further drain the inner wall position to the dust collecting cavity with dirt, thereby can avoid getting into the high-speed dirt in the dust collecting cavity and directly bump with the filter screen, thereby help maintaining the structural stability of filter screen self.

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.

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.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the filth separator among the prior art and strikeing the back receiving the air current that carries the big quality granule, takes place the defect of damage easily.

Therefore, the utility model provides a dirt separator, include: 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 in the dust collection cavity and is opposite to the filter screen; the air inlet pipe is arranged on the air inlet, one end, entering the dust collection cavity, of the air inlet pipe is arranged in a closed mode, a plurality of gaps are formed in the side wall of the air inlet pipe, baffles are arranged on the gaps, and the extending direction of at least one part of each baffle is overlapped with the tangent line of the corresponding position of the air inlet pipe.

The utility model provides a dirt separator, the baffle is the arcuation setting, the centre of a circle of baffle is close to intake pipe one side sets up.

The utility model provides a dirt separator, a plurality of the baffle is the needle-like setting of reverse time and is in the intake pipe.

The utility model provides a dirt separator, the baffle with the intake pipe corresponds the scope of the contained angle between the position and is.

The utility model provides a dirt separator, the axis of air inlet with the axis of filter screen coincides the setting each other.

The utility model provides a dirt separator, the center orientation of filter screen the direction protrusion setting of air inlet.

The utility model provides a dirty separator of dirt, the filter screen includes the trompil region and does not trompil the region, the trompil region sets up the inside in the region of not trompil.

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.

The utility model provides a dirt separator still includes the motor support, sets up on the inner wall of main part, the central point of motor support puts and is provided with the rotation motor.

The utility model provides a dirt separator, be provided with the inner tube on the inner wall of main part, motor support sets up on the inner wall of inner tube, the diameter of filter screen is greater than the diameter of inner tube.

The utility model provides a dirt separator, be provided with the exhaust hole on the lateral wall of main part.

The utility model provides a dirt separator, be provided with the vacuum motor installation department in the main part.

The utility model provides a dirt separator, the vacuum motor installation department is for setting up recess on the first main part lateral wall.

The utility model provides a dirt separator still includes the motor filter screen, sets up be close to on the wind wheel the one end of rotating the motor.

The utility model provides a dust collector, which comprises a dust-dirt separating device provided by the utility model; one end of the dust collection pipe is connected to 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 utility model discloses technical scheme has following advantage:

1. the utility model provides a dirt separator, include: 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 in the dust collection cavity and is opposite to the filter screen; the air inlet pipe is arranged on the air inlet, one end, entering the dust collection cavity, of the air inlet pipe is arranged in a closed mode, a plurality of gaps are formed in the side wall of the air inlet pipe, baffles are arranged on the gaps, and the extending direction of at least one part of each baffle is overlapped with the tangent line of the corresponding position of the air inlet pipe.

The intake pipe enters into the one end in dust collection chamber and is sealed form setting, set up the breach simultaneously on the lateral wall of intake pipe, through foretell mode of setting up, can derive the inside dirt of intake pipe from the breach position, and simultaneously, the tangent line that corresponds the position with the intake pipe through the at least partly extending direction of restriction baffle coincides each other, can further drain the dirt to the inner wall position in dust collection chamber, thereby can avoid getting into the high-speed dirt in the dust collection chamber and directly bumping with the filter screen, thereby help maintaining the structural stability of filter screen self, avoid it to take place the damage.

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. The utility model provides a dirt separator, the baffle is the arcuation setting, the centre of a circle of baffle is close to intake pipe one side sets up.

Through foretell structure setting mode for dirt can collide with the inner wall of baffle at the in-process that removes along the baffle, and then helps reducing the velocity of flow of dirt self, thereby prevents that fast-speed dirt from causing the damage to the inner wall in dust collecting chamber and dust collecting chamber other parts.

3. The utility model provides a dirt separator, a plurality of the baffle is the needle-like setting of reverse time and is in the intake pipe.

Through foretell mode of setting up for the dirt that flows through the intake pipe can be according to a direction, anticlockwise direction promptly at intake pipe inside circulation flow, thereby helps on dirt can orderly effect the inner wall of dust collecting chamber.

4. The utility model provides a dirt separator, the vacuum motor installation department is for setting up recess on the first main part lateral wall. Through setting up the recess, can realize the stability of vacuum motor self, avoid vacuum motor to take place to rock.

5. 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 view of a vacuum cleaner according to the present invention;

fig. 2 is an exploded view of the dust-dirt separating device provided by the present invention;

fig. 3 is a cross-sectional view of the dust-dirt separating device provided by the present invention;

fig. 4 is an exploded view of the dust-dirt separator according to another angle;

fig. 5 is an assembly view of the dust-dirt separating device provided by 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; 511-notch; 512-a baffle plate; 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 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.

Example 1

The present embodiment provides a dust and dirt separating apparatus, as shown in fig. 2 to 5, 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.

The rotary motor 6 is arranged in the main body, a rotary shaft 61 is arranged on the rotary motor 6, a filter screen 7 is arranged on the output shaft, and the center of the filter screen 7 faces the air inlet 5 and is convexly arranged.

In the present embodiment, the air inlet 5 is disposed in the dust collecting chamber 4 and opposite to the filter screen 7, as shown in fig. 2 and 3, the air inlet 5 is disposed at the left side of the filter screen 7;

the air inlet pipe 51 is arranged on the air inlet 5, one end of the air inlet pipe, which enters the dust collection cavity 4, is arranged in a closed shape, a plurality of gaps 511 are arranged on the side wall of the air inlet pipe, baffles 512 are arranged on the gaps, and the extending direction of at least one part of each baffle is overlapped with the tangent line of the corresponding part of the air inlet pipe.

Specifically, as shown in fig. 3, the left end of intake pipe 51 is opened, the right-hand member is the setting of sealed form, set up a plurality of breachs on intake pipe 51's lateral wall, through the aforesaid mode of setting up, can follow the breach position with the inside dirt of intake pipe and derive, and simultaneously, the extending direction of at least partly through the restriction baffle coincides each other with the tangent line that the intake pipe corresponds the position, can further drain the dirt to the inner wall position of dust collection chamber, thereby can avoid getting into the high-speed dirt of dust collection in the dust collection chamber and directly bump with the filter screen, thereby help maintaining the structural stability of filter screen self, avoid it to take place the damage.

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.

In this embodiment, the structure of the baffle 512 itself is not limited, and as a preferred embodiment, the baffle 512 is disposed in an arc shape, and the center of the baffle is disposed near the side of the air inlet pipe.

Through foretell structure setting mode for dirt can collide with the inner wall of baffle at the in-process that removes along the baffle, and then helps reducing the velocity of flow of dirt self, thereby prevents that fast-speed dirt from causing the damage to the inner wall in dust collecting chamber and dust collecting chamber other parts.

Furthermore, the number of the baffles and the corresponding gaps is not limited, in the embodiment, a plurality of gaps can be arranged on the side wall of the air inlet pipe, a plurality of baffles are correspondingly arranged, and the plurality of baffles are arranged on the air inlet pipe in a reverse-time needle shape. Through foretell mode of setting up for the dirt that flows through the intake pipe can be according to a direction, anticlockwise direction promptly at intake pipe inside circulation flow, thereby helps on dirt can orderly effect the inner wall of dust collecting chamber.

In this embodiment, in order to limit the dust flowing out of the air inlet pipe from being stably blown towards the side wall of the dust collecting cavity, the included angle between the baffle and the corresponding part of the air inlet pipe is limited within the range of (30-80 °), and the preferred angle is 45 °.

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 combination of controlling the central protrusion of the filter screen 7 and arranging the baffle on the air inlet pipe, the impact performance of dust entering the dust collecting 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, as shown in fig. 3 and 4, 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 one end 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.

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 can be made without departing from the scope of the invention.

Claims (15)

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 in the dust collection cavity (4) and is opposite to the filter screen (7);

the dust collecting device comprises an air inlet pipe (51) arranged on the air inlet (5), one end, entering the dust collecting cavity (4), of the air inlet pipe is arranged in a closed mode, a plurality of gaps (511) are formed in the side wall of the air inlet pipe, baffles (512) are arranged on the gaps, and the extending direction of at least one part of each baffle coincides with the tangent line of the corresponding portion of the air inlet pipe.

2. The dirt-dust separating apparatus of claim 1, wherein the baffle is arcuately disposed, and a center of the baffle is disposed near one side of the inlet duct.

3. The dirt-and-dust separating apparatus of claim 2, wherein a plurality of said baffles are arranged in a counter-clockwise fashion on said inlet duct.

4. A dirt-and-dust separating apparatus according to any one of claims 1 to 3, in which the angle between the baffle and the corresponding part of the inlet duct is in the range 30 ° to 80 °.

5. Dust and dirt separating device according to claim 1 or 2, characterized in that the axis of the air inlet (5) and the axis of the filter screen are arranged coincident with each other.

6. 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).

7. The dirt-and-dust separating apparatus of claim 6, wherein the filter screen includes an open area and a non-open area, the open area being disposed inside the non-open area.

8. The dirt-dust separating apparatus of claim 7, 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.

9. 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).

10. The dust-dirt separating apparatus according to claim 9, wherein 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 filter screen has a diameter larger than that of the inner cylinder (13).

11. 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.

12. A dirt-and-dust separating apparatus according to claim 1 or 11, characterised in that a vacuum motor mounting portion (14) is provided on the main body.

13. The dirt-and-dust separating apparatus of claim 12, wherein the main body includes: the vacuum motor comprises a first main body (11), the vacuum motor is arranged in the first main body (11), and a vacuum motor mounting part (14) is a groove arranged on the side wall of the first main body.

14. 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.

15. A dust collector is characterized by comprising

The dirt-and-dust separating apparatus of any one of claims 1 to 14;

one end of the dust collection pipe (9) is connected to 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).

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