CN215128029U - Cyclone separation structure and dust collector - Google Patents

Abstract

The utility model relates to a cyclone separation structure and a dust collector, wherein the cyclone separation structure comprises a dust cup, a dust cover, a cyclone separation unit and an air inlet pipeline, and at least part of the cyclone separation unit is arranged around the air inlet pipeline; the cyclone separation unit comprises a first cyclone separation part, a second cyclone separation part, a cyclone seat and a cylindrical filter screen, wherein the first cyclone separation part is positioned at the upstream of the cylindrical filter screen, and the second cyclone separation part is positioned at the downstream of the cylindrical filter screen; the cyclone seat is provided with a cylindrical shell, an air inlet, an air outlet and a first air flow channel for connecting the air inlet and the air outlet; the cylindrical shell is arranged on one side, away from the dust cover, of the cylindrical filter screen, the outlet of the air inlet pipeline is connected with the air inlet, the air outlet is located on the cylindrical shell, and the first cyclone separation part comprises a first part located between the dust cup and the cylindrical shell and a second part located between the dust cup and the cylindrical filter screen. The utility model discloses increased the whirlwind rotational speed, improved dirt gas separation efficiency, increased the filter area of tube-shape filter screen, improved the amount of wind.

Description

Cyclone separation structure and dust collector

Technical Field

The utility model relates to a dust catcher technical field especially relates to a whirlwind separation structure and dust catcher.

Background

A multi-cyclone cleaner is a more recent vacuum cleaner which does not have a conventional dust bag or filter system but rather causes the airflow to follow a high speed helical path through one or more cylinders. When the airflow moves rapidly along the spiral path, all dirt particles are thrown out of the airflow due to strong centrifugal force, so that the dirt is separated from the airflow and collected at the bottom of the cylinder.

In the cyclone dust collector on the market at present, an inlet pipeline enters the cyclone separator and has only one opening, so that the cyclone flow velocity is not uniform. Moreover, the air inlet is usually arranged directly on the filter screen, which occupies the filtering area of the filter screen, and part of the air flow entering the cavity of the cyclone separator from the inlet pipeline directly enters the second cyclone separation stage through the filter screen without cyclone dust-air separation, which affects the separation efficiency of the cyclone separator.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above disadvantages and deficiencies of the prior art, the utility model provides a cyclone separation structure and a dust collector, which solves the technical problems of uneven cyclone flow velocity and low separation efficiency.

(II) technical scheme

In order to achieve the above object, an embodiment of the present invention provides a cyclone separation structure, which includes:

the dust cup, the dust cover arranged at the first end of the dust cup, the cyclone separation unit arranged in the dust cup and the air inlet pipeline arranged in the dust cup, wherein at least part of the cyclone separation unit is arranged around the air inlet pipeline;

the cyclone separation unit comprises a first cyclone separation part, a second cyclone separation part, a cyclone seat and a cylindrical filter screen, wherein the first cyclone separation part is positioned at the upstream of the cylindrical filter screen, and the second cyclone separation part is positioned at the downstream of the cylindrical filter screen;

the cyclone seat is provided with a cylindrical shell, an air inlet, an air outlet and a first air flow channel for connecting the air inlet and the air outlet, and the air inlet, the air outlet and the first air flow channel are all arranged inside the cylindrical shell; the tube-shape casing set up in the tube-shape filter screen is kept away from one side of dirt lid, the export of inlet air pipeline with air intake connection, the air outlet is located on the tube-shape casing, first whirlwind separation portion is including being located the dirt cup with first portion between the tube-shape casing and being located the dirt cup with second portion between the tube-shape filter screen.

Preferably, the air outlet comprises a first air outlet and a second air outlet which are arranged at intervals along the circumferential direction of the cylindrical shell; and/or

An arc-shaped guide structure is formed at the air outlet section of the first air flow channel, which is close to the air outlet.

Preferably, the first airflow channel includes an air inlet section close to the air inlet and an air outlet section close to the air outlet, a cross section of the air outlet section perpendicular to an extending direction of the air inlet duct is an "S" shaped structure, and the air outlet includes a first air outlet and a second air outlet respectively disposed at two ends of the "S" shaped structure.

Preferably, a partition wall is arranged in the dust cup, a dust collecting cavity is formed by the partition wall and the side wall of the air inlet pipeline in an enclosing manner, a dust inlet of the dust collecting cavity is communicated with a dust outlet of the second cyclone separation part, and a dust outlet of the dust collecting cavity is blocked by the dust cover under the condition that the dust cover is in a closed state.

Preferably, the cyclone seat is further provided with a dust collecting channel and a second airflow channel, two ends of the dust collecting channel are respectively connected with the dust outlet of the second cyclone separation part and the dust inlet of the dust collecting cavity, and the second airflow channel is communicated with one end of the cylindrical filter screen close to the cylindrical shell and the air inlet of the second cyclone separation part.

Preferably, the second cyclone separation part comprises a plurality of cyclone cones, the diameter of the bottom ends of the cyclone cones is smaller than that of the top ends of the cyclone cones, the bottom ends of the cyclone cones are respectively provided with the dust outlets, the top ends of the cyclone cones are provided with air outlet devices, and air inlets are formed in the side walls, close to the top ends, of the cyclone cones.

Preferably, the second cyclone separation part comprises a sleeve, a first end of the sleeve is connected with the cylindrical shell in a sealing manner, an air inlet of the cyclone cone is located in the sleeve, the dust outlet is located in the dust collection channel, the air outlet device comprises a sealing gasket and a multi-cylinder exhaust pipe, the multi-cylinder exhaust pipe comprises a bottom plate and a plurality of cylinder pipes, one ends of the plurality of cylinder pipes are respectively arranged in the top end of the cyclone cone in a one-to-one correspondence manner and form an air outlet of the cyclone cone, the outer peripheral surface of the bottom plate is mounted on the inner wall of the sleeve in a sealing manner, and the bottom surface of the bottom plate is connected with the top end of the cyclone cone in a sealing manner through the sealing gasket.

Preferably, the cyclone seat comprises a first end and a second end which are opposite, the first end is connected with the air inlet pipeline, the second end is connected with the second cyclone separation part, the dust outlet of the dust collection channel and the air inlet are both arranged at the first end, and the dust inlet of the dust collection channel is arranged at the second end of the cyclone seat.

Preferably, the dust cover is rotatably connected with the dust cup through a rotating shaft, an air inlet is formed in the dust cover, a connecting sleeve is arranged in the air inlet, the connecting sleeve is connected with the air inlet pipeline under the condition that the dust cover is in a closed position, and a sealing structure is arranged at the joint position of the connecting sleeve and the air inlet pipeline; and/or

The cyclone separation structure and the dust collector comprise an air outlet filter, the air outlet filter is arranged at the downstream of the air outlet device, and at least part of the air outlet filter is positioned in the sleeve.

Preferably, the present invention also provides a vacuum cleaner comprising a cyclonic separating structure as described above and a suction device located downstream of the cyclonic separating structure.

(III) advantageous effects

The utility model has the advantages that: the utility model discloses a whirlwind separation structure and dust catcher, because first whirlwind separation part is located the upper reaches of tube-shape filter screen, second whirlwind separation part is located the low reaches of tube-shape filter screen, the dusty air current that gets into the dirt cup from the inlet pipeline passes through whirlwind dirt gas separation earlier, and then gets into second whirlwind separation part after filtering through the tube-shape filter screen, and the both ends of the first air current channel of whirlwind seat are provided with two air outlets respectively, and compared with the prior art, the air current admits air to the dirt cup (first whirlwind separation level) tangentially through two air outlets, makes it more even to admit air, and the whirlwind velocity of flow is more even, has increased the air current rotational speed, has improved dirt gas separation efficiency; during the dirt cup that dirty air current got into first cyclone from the inlet pipe, dirty air current can be round the downward whirl of dirt cup, had both reached the mesh of downward rotation, had also guaranteed the air inlet area and the filter area of tube-shape filter screen, had improved the amount of wind, and rethread tube-shape filter screen enters into second cyclone, has reached better dirt gas separation effect, has improved cyclone's separation efficiency.

Drawings

Fig. 1 is a schematic perspective view of a cyclone separation structure according to the present invention;

fig. 2 is a schematic front view of a cyclone separation structure according to the present invention;

FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a schematic cross-sectional view taken at B-B of FIG. 4;

FIG. 6 is an exploded view of FIG. 1;

FIG. 7 is an enlarged partial schematic view of FIG. 6 at C;

FIG. 8 is an enlarged partial schematic view of FIG. 6 at D;

FIG. 9 is an enlarged partial schematic view of FIG. 6 at F;

fig. 10 is a schematic front view of a cyclone seat according to a first embodiment of the present invention;

fig. 11 is a rear view schematically illustrating a cyclone seat according to a first embodiment of the present invention;

fig. 12 is a schematic front view of a cyclone seat according to a second embodiment of the present invention;

fig. 13 is a rear view schematically illustrating a cyclone seat according to a second embodiment of the present invention.

[ description of reference ]

1: a dust cup; 2: a dust cover; 21: an air inlet; 22: connecting a sleeve;

3: a cyclone separation unit; 31: a first cyclone separating part; 32: a second cyclone separating part; 33: a cyclone seat; 330: a cylindrical housing; 331: an air inlet; 332: an air outlet; 3321: a first air outlet; 3322: a second air outlet; 333: a first air flow passage; 334: a dust collecting passage; 3340: a dust inlet of the dust collection passage; 3341: a dust outlet of the dust collection passage; 3342: a first dust collecting groove; 3343: a second dust collecting groove; 335: a second airflow channel; 34: a cylindrical filter screen; 35: a cyclone cone; 350: an air inlet; 351: a dust outlet; 36: a sleeve;

4: an air inlet duct; 5: a partition wall; 6: a dust collection chamber; 7: an air outlet device; 71: sealing gaskets; 72: a multi-cylindrical exhaust duct; 721: a cylindrical tube; 722: a base plate; 8: a rotating shaft.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 3.

Referring to fig. 1 to 6, the present invention provides a cyclone separation structure, which includes a dust cup 1, a dust cover 2 disposed at a first end of the dust cup 1, a cyclone separation unit 3 disposed inside the dust cup 1, and an air inlet duct 4 disposed inside the dust cup 1, wherein at least a portion of the cyclone separation unit 3 is disposed around the air inlet duct 4; the cyclone separation unit 3 includes a first cyclone separation part 31, a second cyclone separation part 32, a cyclone holder 33 and a cylindrical screen 34, the first cyclone separation part 31 being located upstream of the cylindrical screen 34, the second cyclone separation part 32 being located downstream of the cylindrical screen 34; the cyclone base 33 is provided with a cylindrical shell 330, an air inlet 331, an air outlet 332 and a first air flow passage 333 connecting the air inlet 331 and the air outlet 332, and the air inlet 331, the air outlet 332 and the first air flow passage 333 are all arranged inside the cylindrical shell 330; the cylindrical housing 330 is disposed on a side of the cylindrical filter screen 34 away from the dust cover 2, an outlet of the air inlet duct 4 is connected to the air inlet 331, the air outlet 332 is disposed on the cylindrical housing 330, and the first cyclone 31 includes a first portion disposed between the dust cup 1 and the cylindrical housing 330 and a second portion disposed between the dust cup 1 and the cylindrical filter screen 34.

It should be noted that the dust-containing airflow enters the air inlet duct 4 through the dust cover 2, enters the first airflow channel 333 of the cyclone seat 33 from the air inlet duct 4 through the air inlet 331, and then exits through the air outlets 332 at two ends of the first airflow channel 333, enters the dust cup 1 (i.e., enters the first cyclone separation part 31) to form a cyclone airflow. Dusty air current can carry out the dirt gas separation simultaneously around the 2 whirl of the circumference orientation dirt lid of dirt cup 1 under the suction effect of the suction device of dust catcher, and dust can drop to dirt cup 1 bottom, has both reached the mesh of downwardly rotating, has also guaranteed the air inlet area of tube-shape filter screen 34, has improved the amount of wind, reaches better dirt gas separation effect. The cylindrical filter screen 34 may be a metal filter screen, and can perform primary filtration, mainly for filtering dust particles with a large volume. The dusty air current enters into second cyclone 32 after passing through cylindrical screen 34 filters, carries out the second cyclone through second cyclone 32, carries out the multistage separation, and the filter effect is better.

Referring to fig. 3 to 8, the outlet port 332 includes a first outlet port 3321 and a second outlet port 3322 arranged at intervals in the circumferential direction of the cylindrical housing 330; and/or the air outlet section of the first air flow channel 333 near the air outlet 332 is formed with an arc-shaped guiding structure. Dusty air current admits air for dirt cup 1 tangential through two air outlets 332 to dirt cup 1 is inside, improves the whirl effect of air current, and two air outlets also make admit air more even, and the whirlwind velocity of flow is more even.

Referring to fig. 7 to 13, the first air flow channel 333 includes an air inlet section near the air inlet 331 and an air outlet section near the air outlet 332, a cross section of the air outlet section perpendicular to an extending direction of the air inlet duct 4 is an "S" shaped structure, and the air outlet 332 includes a first air outlet 3321 and a second air outlet 3322 respectively disposed at two ends of the "S" shaped structure. The dusty airflow passes through first air outlet 3321 and second air outlet 332 to the tangential air-out of dirt cup 1 and forms the whirlwind airflow, and the direction of rotation of the dusty airflow of two air outlets 332 department is the same moreover for the air-out is more even, thereby makes the whirlwind velocity of flow more even, has improved dust collection efficiency.

In addition, referring to fig. 3, a partition wall 5 is provided in the dust cup 1, the partition wall 5 and the side wall of the air inlet duct 4 enclose to form a dust collection chamber 6, a dust inlet of the dust collection chamber 6 is communicated with a dust outlet of the second cyclone separation part 32, and a dust outlet of the dust collection chamber 6 is blocked by the dust cover 2 when the dust cover 2 is in a closed state. The dust collecting chamber 6 is used for collecting dust separated by the second cyclone part 32.

Referring to fig. 3 again, the cyclone base 33 is further provided with a dust collecting passage 334 and a second air flow passage 335, both ends of the dust collecting passage 334 are respectively connected to the dust outlet of the second cyclone part 32 and the dust inlet of the dust collecting chamber 6, and the second air flow passage 335 communicates one end of the cylindrical filter screen 34 close to the cylindrical housing 330 with the air inlet 350 of the second cyclone part 32. The airflow passes through the second airflow passage 335 into the second cyclonic separating section 32.

Next, referring to fig. 3 to 6, the second cyclone separation part 32 includes a plurality of cyclone cones 35, the diameters of the bottom ends of the cyclone cones 35 are smaller than the diameter of the top ends, dust outlets 351 are respectively formed at the bottom ends of the cyclone cones 35, the top ends of the cyclone cones 35 are provided with the air outlet device 7, an air inlet 350 is provided on the side wall of the cyclone cone 35 near the top end, and the second air flow channel 335 communicates one end of the cylindrical filter screen 34 near the cylindrical housing 330 with the air inlet 350 of the cyclone cone 35. The airflow filtered by the cylindrical screen 34 enters the cyclone cone 35 through the inlet 350. The second cyclone part 32 adopts a multi-cone cyclone separation technology, and can filter fine particles, thereby avoiding the fine particles from being discharged along with the airflow. Cyclone cone 35 adopts the toper structure, and the top diminishes to the bottom gradually, and the toper structure helps the air to flow and forms the whirl and produce powerful centrifugal force, can realize the separation of dirt gas, and the micronic dust drops to collection dirt passageway 334 downwards from cyclone cone 35's bottom, and the air current is discharged through cyclone cone 35's top, guarantees cyclone cone 35's inside and does not block up, can also improve the suction of dust catcher, and is more lasting during the use.

In addition, the second cyclone separation part 32 further comprises a sleeve 36, the first end of the sleeve 36 is hermetically connected with the cylindrical housing 330, the air inlet 350 of the cyclone cone 35 is positioned in the sleeve 36, the dust outlet 351 is positioned in the dust collection channel 334, the airflow enters from the air inlet 350 of the cyclone cone 35, the dust and air separation is realized in the cyclone cone 35, and the micro dust falls into the dust collection channel 334 from the dust outlet 351 at the bottom end of the cyclone cone 35. The air outlet device 7 comprises a sealing gasket 71 and a multi-cylinder air outlet pipe 72, the multi-cylinder air outlet pipe 72 comprises a bottom plate 722 and a plurality of cylindrical pipes 721, one ends of the cylindrical pipes 721 are respectively arranged in the top end of the cyclone cone 35 in a one-to-one correspondence manner and form an air outlet 332 of the cyclone cone 35, the peripheral surface of the bottom plate 722 is hermetically mounted on the inner wall of the sleeve 36, the bottom surface of the bottom plate 722 is hermetically connected with the top end of the cyclone cone 35 through the sealing gasket 71, the air suction effect of the dust collector is ensured, and the sealing performance and the stability of the dust collector are improved. The airflow after dust and gas separation is introduced into the multi-cylinder exhaust duct 72 from the top end of the cyclone cone 35.

Referring to fig. 3 to 13, the cyclone base 33 includes a first end (not shown) and a second end (not shown) opposite to each other, the first end is connected to the air inlet duct 4, the second end is connected to the second cyclone part 32, the dust outlet 3341 and the air inlet 331 of the dust collecting channel are both disposed at the first end, and the dust inlet 3340 of the dust collecting channel is disposed at the second end of the cyclone base 33, so that the whole cyclone base 33 has a smooth structure, and the bending of the air flow and the dust is reduced, thereby improving the dust removal efficiency and reducing the air pressure loss during the air flow. The dust outlet 3341 of the dust collecting channel is arranged around the air inlet 331, and the cross section of the dust outlet 3341 of the dust collecting channel and the cross section of the air inlet 331 are spliced into a circle.

In the first embodiment, referring to fig. 10 and 11, the air inlet 331 has a circular cross-section, and the dust outlet 3341 of the dust collecting passage has a crescent cross-section.

In a second embodiment, referring to fig. 12 and 13, the cross-section of the air inlet 331 is a cut circle, the dust outlet 3341 of the dust collecting passage includes a first dust collecting groove 3342 and a second dust collecting groove 3343, the first dust collecting groove 3342 and the second dust collecting groove 3343 are disposed around the air inlet 331, a line connecting the cross-section of the first dust collecting groove 3342 and the cross-section of the air inlet 331 is a straight line, and a line connecting the cross-section of the second dust collecting groove 3343 and the cross-section of the air inlet 331 is an arc.

The dust cover 2 is rotatably connected with the dust cup 1 through the rotating shaft 8, the rotating shaft 8 is in the prior art, the dust cover 2 is convenient to open and close, the dust cover 2 is not easy to lose, the dust cover 2 can be opened to directly pour out dirt from the dust collecting cavity 6 and the dust cup 1, and the dust cup is not required to be cleaned by hands more conveniently. An air inlet 21 is formed in the dust cover 2, a connecting sleeve 22 is arranged in the air inlet 21, the connecting sleeve 22 is connected with the air inlet pipeline 4 under the condition that the dust cover 2 is at a closed position, and a sealing structure is arranged at the joint position of the connecting sleeve 22 and the air inlet pipeline 4; and/or the cyclone separation structure and the dust collector comprise an air outlet filter (not shown), the air outlet filter is arranged at the downstream of the air outlet device 7, and at least part of the air outlet filter is positioned in the sleeve 36. The sealing structure can avoid the generation of gaps when the connecting sleeve 22 is connected with the air inlet pipeline 4, ensure the air suction effect, improve the sealing property and stability of the whole dust collector and prolong the service life of the dust collector.

The utility model provides a dust catcher (not shown) includes the whirlwind separation structure (see fig. 3) and is located the suction device (not shown) of whirlwind separation structure low reaches. Suction devices are known in the art and include a motor and an impeller for drawing a dust laden gas stream.

Referring to fig. 1 to 13, the working principle of the cyclone separation structure of the present invention is as follows: when the user uses, with dirt lid 2 down, the dusty air current is inhaled by suction device through adapter sleeve 22, then enters into tuber pipe way 4, from entering into tuber pipe way 4 and entering into in the first airflow channel 333 of whirlwind seat 33 through air intake 331, rethread first airflow channel 333 both ends air outlet 332 for dirt cup 1 tangential, enter into dirt cup 1 (entering first whirlwind separation portion 31) and form the whirlwind air current, carry out primary filtration, the dirt gas separation this moment, dust falls to dirt cup 1 bottom because of the action of gravity, it separates the relatively heavier dust from the air current, the air current after the dust removal simultaneously enters into tube-shape filter screen 34. The cylindrical screen 34 performs a second filtration to filter the larger volume of dirt particles in the airflow and retain them in the dirt cup 1. The airflow passes through the cylindrical screen 34 into the second airflow path 335, and then enters the plurality of cyclone cones 35 (i.e., the second cyclone part 32) from the plurality of inlet ports 350 and is filtered for the third time. The airflow is separated from dust and air in the cyclone cone 35, the tiny dust falls down from the dust outlet 351 at the bottom end of the cyclone cone 35 into the dust collecting channel 334 and then falls into the dust collecting chamber 6, and the cleaned airflow enters the air outlet filter from the multi-cylinder air outlet pipe 72 of the air outlet device 7 through the top end of the cyclone cone 35 and then is exhausted out of the dust collector. The dust cover 2 is opened by rotating the rotating shaft 8, and the dust is directly poured out of the dust collection cavity 6 and the dust cup 1.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A cyclone separation structure is characterized by comprising a dust cup, a dust cover arranged at the first end of the dust cup, a cyclone separation unit arranged in the dust cup and an air inlet pipeline arranged in the dust cup, wherein at least part of the cyclone separation unit is arranged around the air inlet pipeline;

the cyclone separation unit comprises a first cyclone separation part, a second cyclone separation part, a cyclone seat and a cylindrical filter screen, wherein the first cyclone separation part is positioned at the upstream of the cylindrical filter screen, and the second cyclone separation part is positioned at the downstream of the cylindrical filter screen;

the cyclone seat is provided with a cylindrical shell, an air inlet, an air outlet and a first air flow channel for connecting the air inlet and the air outlet, and the air inlet, the air outlet and the first air flow channel are all arranged inside the cylindrical shell; the tube-shape casing set up in the tube-shape filter screen is kept away from one side of dirt lid, the export of inlet air pipeline with air intake connection, the air outlet is located on the tube-shape casing, first whirlwind separation portion is including being located the dirt cup with first portion between the tube-shape casing and being located the dirt cup with second portion between the tube-shape filter screen.

2. Cyclonic separating structure as claimed in claim 1,

the air outlet comprises a first air outlet and a second air outlet which are arranged at intervals along the circumferential direction of the cylindrical shell; and/or

An arc-shaped guide structure is formed at the air outlet section of the first air flow channel, which is close to the air outlet.

3. The cyclone separation structure of claim 2, wherein the first airflow channel comprises an air inlet section near the air inlet and an air outlet section near the air outlet, the cross section of the air outlet section perpendicular to the extending direction of the air inlet duct is an "S" shaped structure, and the air outlet comprises a first air outlet and a second air outlet respectively arranged at two ends of the "S" shaped structure.

4. The cyclone separation structure of claim 1, wherein a partition wall is disposed in the dust cup, the partition wall and the sidewall of the air inlet duct enclose a dust collection chamber, a dust inlet of the dust collection chamber is communicated with the dust outlet of the second cyclone separation portion, and a dust outlet of the dust collection chamber is blocked by the dust cover when the dust cover is in a closed state.

5. The cyclone separation structure of claim 4, wherein the cyclone base is further provided with a dust collection channel and a second airflow channel, two ends of the dust collection channel are respectively connected with the dust outlet of the second cyclone separation part and the dust inlet of the dust collection cavity, and the second airflow channel is communicated with one end of the cylindrical filter screen close to the cylindrical shell and the air inlet of the second cyclone separation part.

6. The cyclone separation structure of claim 5, wherein the second cyclone separation part comprises a plurality of cyclone cones, the diameters of the bottom ends of the cyclone cones are smaller than the diameters of the top ends of the cyclone cones, the bottom ends of the cyclone cones are respectively provided with the dust outlets, the top ends of the cyclone cones are provided with air outlet devices, and the side walls of the cyclone cones close to the top ends are provided with air inlets.

7. The cyclone separation structure of claim 6, wherein the second cyclone separation part comprises a sleeve, a first end of the sleeve is connected with the cylindrical shell in a sealing manner, an air inlet of the cyclone cone is positioned in the sleeve, the dust outlet is positioned in the dust collection channel, the air outlet device comprises a sealing gasket and a multi-cylinder exhaust pipe, the multi-cylinder exhaust pipe comprises a bottom plate and a plurality of cylinder pipes, one end of each cylinder pipe is correspondingly arranged in the top end of the cyclone cone one by one and forms an air outlet of the cyclone cone, the outer peripheral surface of the bottom plate is mounted on the inner wall of the sleeve in a sealing manner, and the bottom surface of the bottom plate is connected with the top end of the cyclone cone in a sealing manner through the sealing gasket.

8. The cyclone separation structure of claim 6, wherein the cyclone base includes a first end and a second end opposite to each other, the first end is connected to the air inlet duct, the second end is connected to the second cyclone separation part, the dust outlet and the air inlet of the dust collecting passage are both disposed at the first end, and the dust inlet of the dust collecting passage is disposed at the second end of the cyclone base.

9. Cyclonic separating structure as claimed in claim 7,

the dust cover is rotatably connected with the dust cup through a rotating shaft, an air inlet is formed in the dust cover, a connecting sleeve is arranged in the air inlet, the connecting sleeve is connected with the air inlet pipeline under the condition that the dust cover is in a closed position, and a sealing structure is arranged at the joint position of the connecting sleeve and the air inlet pipeline; and/or

The cyclone separation structure comprises an air outlet filter, the air outlet filter is arranged at the downstream of the air outlet device, and at least part of the air outlet filter is positioned in the sleeve.

10. A vacuum cleaner, characterized in that the vacuum cleaner comprises a cyclonic separating structure according to any one of claims 1 to 9 and suction means downstream of the cyclonic separating structure.

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