DUST COLLECTION DEVICE AND VACUUM CLEANER

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of international patent application No. PCT/CN2023/133815, filed on November 24, 2023, which itself claims priority to Chinese patent application No. 202310398853.4, filed on April 7, 2023, and titled “DUST COLLECTION DEVICE AND VACUUM CLEANER”. The contents of the above identified applications are hereby incorporated herein in their entireties by reference.

TECHNICAL FIELD

The present disclosure relates to the field of vacuum cleaner technology, and in particular, to a dust collection device and a vacuum cleaner.

BACKGROUND

When an industrial vacuum cleaner is in operation, it typically encounters a great amount of particles such as dust and sundries. A dust collecting bucket is generally disposed in the middle of the pipeline to pre-filter some of the dust or debris. For instance, larger particles and debris can be trapped in the dust collecting bucket, preventing all the dust and debris from entering the industrial vacuum cleaner and causing clogs.

In dust collecting buckets of related art, after the dust and/or the debris enters the dust collecting bucket, it is easily sucked out directly and into the industrial vacuum cleaner. As a result, a filtering effect of the dust collecting bucket is poor, which makes the industrial vacuum cleaner prone to clogging and affects normal operation of the vacuum cleaner.

SUMMARY

In view of above, it is necessary to provide a dust collection device and a vacuum cleaner.

The present disclosure provides a dust collection device. The dust collection device includes a housing with a dust collecting cavity. The housing is provided with an air inlet port and an air outlet port, and the air inlet port and the air outlet port are configured for communicating the dust collecting cavity and the outside, and the air inlet port and the air outlet port are arranged in a staggered manner.

The present disclosure further provides a vacuum cleaner. The vacuum cleaner includes a vacuum cleaner body, a suction nozzle and the dust collection device described above, the vacuum cleaner body is connected to and in communication with the air outlet port, and the suction nozzle is connected to and in communication with the air inlet port.

Details of one or more embodiments of this application are presented in the attached drawings and descriptions below. And other features, purposes and advantages of the present disclosure will become apparent from the description, drawings and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better description and illustration of embodiments and/or examples of those disclosures disclosed herein, reference may be made to one or more attached drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed disclosures, currently described embodiments and/or examples, and currently understood best modes of these disclosures.

FIG. 1 is a schematic view of a dust collection device in one embodiment of the present disclosure.

FIG. 2 is a stereo structural schematic view of a cover body in FIG. 1 of the present disclosure.

FIG. 3 is a perspective view of the dust collection device of the present disclosure in FIG. 1.

FIG. 4 is a sectional view of the dust collection device in FIG. 1 of the present disclosure.

FIG. 5 is a stereo structural schematic view of the cover body in FIG. 2 in an embodiment of the present disclosure.

FIG. 6 is a stereo structural schematic view of the cover body in FIG. 5 from another angle of view of the present disclosure.

FIG. 7 is a distribution schematic view of an air inlet port and an air outlet port in FIG. 1 of the present disclosure.

FIG. 8 is a stereo structural schematic view of the dust collection device in FIG. 1 in an embodiment of the present disclosure.

FIG. 9 is a stereo structural schematic view of a barrel body in FIG. 8 of the present disclosure.

FIG. 10 is a schematic view of the barrel body in FIG. 9 from another angle of view of the present disclosure.

FIG. 11 is a stereo structural schematic view of a dust collection device in another embodiment of the present disclosure.

FIG. 12 is a structural schematic view of the dust collection device in FIG. 11 from another angle of view.

FIG. 13 is a sectional view of the dust collection device in FIG. 12 along the section line A-A.

FIG. 14 is an enlarged view of portion X in FIG. 13.

FIG. 15 is a partial structural schematic view of the dust collection device in FIG. 13.

FIG. 16 is a schematic view of a filter element in FIG. 13.

FIG. 17 is a schematic view of the filter element in FIG. 16 from another angle of view.

FIG. 18 is a sectional view of the filter element in FIG. 17 along the section line B-B.

FIG. 19 is a structural schematic view of the filter element in an embodiment of the present disclosure.

FIG. 20 is a structural schematic view of the filter element in an embodiment of the present disclosure.

FIG. 21 is a structural schematic view of the filter element in FIG. 20 from another angle of view.

FIG. 22 is a structural schematic view of the filter element in FIG. 20 from another angle of view.

FIG. 23 is a structural schematic view of a vacuum cleaner in an embodiment in the present disclosure.

Reference signs are as follows: 100 represents a dust collection device; 1 represents a housing; 11 represents a dust collecting cavity; 111 represents a clamping groove; 12 represents an air inlet port; 13 represents an air outlet port; 14 represents a barrel body; 141 represents a bucket opening; 15 represents a cover body; 151 represents a flange; 2 represents a first air inlet pipe; 21 represents a pipe body; 22 represents a restricting portion; 221 represents an opening; 3 represents a second air inlet pipe; 31 represents a communication port; 4 represents a buckle assembly; 41 represents a first buckle; 42 represents a second buckle; 43 represents a rotating shaft; 5 represents an air outlet elbow; 6 represents a filter element; 601 represents a filter hole; 602 represents a clamping protrusion; 61 represents a mounting frame; 611 represents a second step portion; 612 represents a clamping hole; 62 represents a filter screen; 63 represents a restricting bottom plate; 631 represents a first step portion; 632 represents a clamping foot; 64 represents a dust filter pipe; 641 represents a pipe portion; 6411 represents a pipe orifice; 642 represents a dust blocking portion; 6421 represents a first blocking wall; 6422 represents a second blocking wall; 643 represents an air filter port; 644 represents a dust guiding portion; 65 represents a connecting pipe; 651 represents a connecting cavity; 200 represents a vacuum cleaner; 210 represents a vacuum cleaner body; and 220 represents a suction nozzle.

DETAILED DESCRIPTION

To make the above-mentioned objects, features and advantages of the present disclosure more apparent and easier to understand, and the specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Numerous specific details are set forth in the following description to facilitate a sufficient understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from that described herein, and a person skilled in the art may perform similar improvements without departing from the connotation of the present disclosure, and therefore, the present disclosure is not limited by the specific embodiments disclosed below.

It should be noted that if an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on another element or intervening elements may also be present. If one element is considered to be “connected to” another element, it may be directly connected to another element or may have a centering element at the same time. In the present disclosure, the terms “vertical”, “horizontal”, “upper”, “lower”, “left”, “right”, and the like used in the present disclosure are for illustrative purposes only and are not shown as unique implementations.

In addition, if these terms “first” and “second” appear, these terms are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, if there is a term “a plurality of”, the meaning of “a plurality of” is at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present disclosure, unless expressly specified and defined otherwise, if the first feature is “on” or “under” the second feature, the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact with each other by means of the intermediate medium. Moreover, the first feature “above”, “on”, and “higher than” the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature horizontal height is higher than the second feature. The first feature “below”, “beneath”, and “under” of the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature horizontal height is less than the second feature.

Unless otherwise defined, all technical and scientific terms used in the specification of the present disclosure have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. Terms used in the specification of the present disclosure are used only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term “and/or” as used in the specification of the present disclosure includes any and all combinations of one or more of the relevant listed items.

When an industrial vacuum cleaner is in operation, it typically encounters a great amount of particles such as dust and sundries. Thus, a dust collecting bucket is generally disposed in the middle of the pipeline to pre-filter some of the dust and debris. For instance, larger particles and debris can be trapped in the dust collecting bucket, preventing all the dust and debris from entering the industrial vacuum cleaner and causing clogs. In dust collecting buckets of related art, after the dust and/or the debris enters the dust collecting bucket, it is easily sucked out directly and into the industrial vacuum cleaner. As a result, a filtering effect of the dust collecting bucket is poor, which makes the industrial vacuum cleaner prone to clogging and affects normal operation of the vacuum cleaner.

To resolve the problem described above, referring to FIG. 1 to FIG. 10, a dust collection device 100 is provided in the present disclosure. The dust collection device 100 can filter a part of the dust and/or a part of the debris and retain the dust and the debris in the dust collecting bucket, thus achieving a better dust collecting effect.

Referring to FIG. 1 to FIG. 2, the dust collection device 100 includes a housing 1 with a dust collecting cavity 11, the housing 1 is provided with an air inlet port 12 and an air outlet port 13, and the air inlet port 12 and the air outlet port 13 are configured for communicating the dust collecting cavity 11 and the outside, and the air inlet port 12 and the air outlet port 13 are arranged in a staggered manner.

As described above, when the current dust collecting bucket in the related art is in operation, the dust or the debris may be directly sucked out from the dust collecting bucket and enter the vacuum cleaner, and the dust collecting bucket has a poor filtering effect after the dust or the debris enters the dust collecting bucket. Thus, the vacuum cleaner is prone to getting clogged, which affects the operation of the vacuum cleaner. However, in the dust collection device 100 provided in the present embodiment of the present disclosure, the air inlet port 12 can be in communication with a suction nozzle 220 of a vacuum cleaner 200, and the air outlet port 13 can be in communication with a vacuum cleaner body 210. When the vacuum cleaner 200 is in operation, the dust, the debris and the like are sucked in the vacuum cleaner 200 via the suction nozzle 220 from the outside and enter the dust collecting cavity 11 via the air inlet port 12. Because the air inlet port 12 and the air outlet port 13 are disposed in a staggered manner, the dust and the debris that enter the dust collecting cavity 11 from the air inlet port 12 is not easily directly discharged from the air outlet port 13. The dust and the debris may firstly settle to a bottom of the dust collecting cavity 11, thereby implementing a dust reduction effect. A part of light dust or debris that settle to the bottom of the dust collecting cavity 11 are sucked up again from the bottom of the dust collecting cavity 11 under the action of the dust suction airflow of the vacuum cleaner body 210, and is discharged from the dust collecting cavity 11 through the air outlet port 13, and enters the vacuum cleaner body 210. The dust collection device 100 has a better filtering effect. The dust collection device 100 can prevent blocking of the vacuum cleaner body 210 caused by the dust or the debris sucked into the vacuum cleaner body 210, thereby ensuring proper operation of the vacuum cleaner.

Referring to FIG. 1, the dust collection device 100 further includes an air outlet elbow 5 disposed on an external top wall of the housing 1 and being connected to and in communication with the air outlet port 13, and an end of the air outlet elbow 5 away from the air outlet port 13 is configured for connecting to the vacuum cleaner body 210. A bending portion of the air outlet elbow 5 can further reduce the amount of dust and debris passing through the air outlet elbow 5, so as to prevent blocking of the vacuum cleaner body 210 caused by the dust or the debris sucked into the vacuum cleaner body 210.

The air outlet elbow 5 and the air outlet port 13, the air outlet elbow 5 and the vacuum cleaner body 210, and the suction nozzle 220 and the air inlet port 12 can be detachably connected by method of screwing, plugging, or clamping, which can facilitate the user to store, repair or replace the air outlet port 13, the air outlet elbow 5 or the vacuum cleaner body 210 after disassembling them while ensuring a stability and a reliability of the connection between the vacuum cleaner body 210, the dust collection device 100 and the suction nozzle 220. In some embodiments, the air outlet elbow 5 and the air outlet port 13, the air outlet elbow 5 and the vacuum cleaner body 210 and the suction nozzle 220 and the air inlet port 12 may also be fixed to each other by methods of pasting, welding and the like as required, as long as the stability and the reliability of the connection between the vacuum cleaner body 210, the dust collection device 100 and the suction nozzle 220 can be ensured, and the dust or the debris cannot leak from a connection gap, which are not limited herein in the present disclosure.

Referring to FIG. 2, in an embodiment, both the air inlet port 12 and the air outlet port 13 are provided on an upper wall of the dust collecting cavity 11. The air inlet port 12 is disposed on the upper wall of the dust collecting cavity 11, so that the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 can settle to the bottom of the dust collecting cavity 11. The air outlet port 13 is disposed on the upper wall of the dust collecting cavity 11 so that the air outlet port 13 is away from the bottom wall of the dust collecting cavity 11, thereby reducing the amount of the dust or the debris sucked up from the bottom of the dust collecting cavity 11, reducing the amount of the dust or the debris discharged from the air outlet port 13 and preventing the vacuum cleaner body 210 from being clogged.

Referring to FIG. 2 to FIG. 3, the dust collection device 100 further includes a first air inlet pipe 2 disposed on the upper wall of the dust collecting cavity 11 and being in communicated with the air inlet port 12, and an end of the first air inlet pipe 2 away from the air inlet port 12 is provided with an opening 221 arranged in a staggered manner from the air outlet port 13. The first air inlet pipe 2 extends downward from the air inlet port 12 and is provided with the opening 221 that is arranged in a staggered manner from air outlet port 13. The dust or the debris sucked by the suction nozzle 220 can enter the dust collecting cavity 11 through the air inlet port 12, the first air inlet pipe 2 and the opening 221. In addition, the opening 221 is farther away from the air outlet port 13 than the air inlet port 12, so that the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 can be further prevented from being directly discharged from the air outlet port 13.

Referring to FIG. 2 and FIG. 6, the first air inlet pipe 2 is detachably connected to the upper wall of the dust collecting cavity 11. Thus, it is convenient for the user to disassemble, clean or replace the first air inlet pipe 2 when the first air inlet pipe 2 is clogged or damaged. The first air inlet pipe 2 may be connected to the upper wall of the dust collecting cavity 11 by using a fastener such as a screw or a bolt, or may be detachably connected to the upper wall of the dust collecting cavity 11 in other manners such as a buckle or a plug. In some embodiments, the first air inlet pipe 2 may also be fixed to the upper wall of the dust collecting cavity 11 by methods of gluing, welding, etc., as long as the stability and the reliability of the connection between the first air inlet pipe 2 and the upper wall of the dust collecting cavity 11 is ensured, and the dust or the debris are prevented from entering the dust collecting cavity 11 through a gap between the first air inlet pipe 2 and the air inlet port 12, which is not limited in the embodiments of the present disclosure.

Referring to FIG. 3 to FIG. 4, the first air inlet pipe 2 includes a pipe body 21 and a restricting portion 22 which are connected to and in communication with each other, one end of the pipe body 21 is connected to and in communication with the air inlet port 12, the other end of the pipe body 21 away from the air inlet port is connected to and in communication with the restricting portion 22, and the opening 221 is disposed on a side wall of the restricting portion 22. The pipe body 21 is configured for connecting the air inlet port 12 to the restricting portion 22, and allowing the first air inlet pipe 2 to extend downwards. The restricting portion 22 can guide the dust or the debris entering the dust collecting cavity 11 from the opening 221, so that the dust or the debris can enter the dust collecting cavity 11 along a direction of the opening 221 and settle to the bottom of the dust collecting cavity 11 under an action of gravity.

Referring to FIG. 2 and FIG. 5, an inner surface of the restricting portion 22 is an arc-shaped surface. The arc-shaped surface has a good guiding effect and can prevent the dust or the debris from staying at the bottom of the restricting portion 22. The arc-shaped surface may be a structure smaller than or equal to one quarter of a spherical surface, so as to ensure that the opening 221 is large enough to prevent the dust or the debris from clogging the first air inlet pipe 2.

Referring to FIG. 3 and FIG. 7, an orientation of the opening 221 is defined as a, a tangent plane of a side wall of the dust collecting cavity 11 is defined as b. The orientation a of the opening 221 is parallel to the tangent plane b of the side wall of the dust collecting cavity 11. Since the orientation a of the opening 221 is parallel to the tangent plane b of the side wall of the dust collecting cavity 11, the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12, the first air inlet pipe 2 and the opening 221 can settle helically along the inner sidewall of the dust collecting cavity 11. A center of the upper wall of the dust collecting cavity 11 is defined as p, a centerof the air inlet port 12 is defined as m and a centerof the air outlet port 13 is defined as n. Along a clockwise direction, an angle between a line (denoted as L 1) defined by the center p of the upper wall of the dust collecting cavity 11 and the center m of the air inlet port 12 and a line(denoted as L 2) defined by the center p of the upper wall of the dust collecting cavity 11 and the center n of the air outlet port 13 is in a range of 180 degrees to 330 degrees. That is, a region (denoted as α) shown in FIG. 7. When the dust or the debris pass by a position corresponding to the air outlet port 13, the dust or the debris are settling downward in the dust collecting cavity 11, and a distance between the dust or the debris and the air outlet port 13 increases, so that the amount of the dust or the debris directly discharged from the air outlet port 13 can be reduced. That “a position corresponding to the air outlet port 13” represents that the dust or the debris and the air outlet port 13 are on the same vertical line.

In an embodiment, an angle between a line (denoted as L 1) defined by the center p of the upper wall of the dust collecting cavity 11 and the center m of the air inlet port 12 and a line(denoted as L 2) defined by the center p of the upper wall of the dust collecting cavity 11 and the center n of the air outlet port 13 is 180 degrees. In this case, a distance between the air inlet port 12 and the air outlet port 13 is the farthest, so that the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 can be further prevented from being directly discharged from the air outlet port 13 before settling to the bottom of the dust collecting cavity.

Referring to FIG. 3, in the present embodiment, most of the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 and the opening 221 can settle to the bottom of the dust collecting cavity 11 along the spiral line (denoted as X), and some of the dust or the debris at the bottom of the dust collecting cavity 11 is discharged from the air outlet port 13 and the air outlet elbow 5 along the Y direction under action of the dust suction of the vacuum cleaner body 210.

Referring to FIG. 8 to FIG. 9, in some embodiments, the air outlet port 13 is disposed on an upper wall of the dust collecting cavity 11, and the air inlet port 12 is disposed on a side wall of the dust collecting cavity 11. Since the air inlet port 12 disposed on the side wall of the dust collecting cavity 11, the distance between the air inlet port 12 and the air outlet port 13 can be further increased, so that the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 can be further prevented from being directly discharged from the air outlet port 13, thereby improving a dust reduction effect.

Referring to FIG. 8 to FIG. 9, the dust collection device 100 further includes a second air inlet pipe 3 disposed on an outer surface of the housing 1, and the second air inlet pipe 13 is connected to and in communication with the air inlet port 12. The second air inlet pipe 3 can guide the dust or the debris that enters the dust collecting cavity 11 from the air inlet port 12, so that the dust or the debris that enters the dust collecting cavity 11 from the air inlet port 12 can settle down to the bottom of the dust collecting cavity 11, so as to prevent the dust or the debris entering the dust collecting cavity 11 from the air inlet port 12 from moving towards the air outlet port 13 and being directly discharged from the air outlet port 13. Thus, a settling effect of the dust or the debris in the dust collecting cavity 11 can be further improved, and a filtering effect of the dust collection device 100 can be improved.

One end of the second air inlet pipe 3 is connected to and in communication with the air inlet port 12, the other end of the second air inlet pipe 3 away from the air inlet port 12 is provided with a communication port 31, the communication port 31 is in communication with the suction nozzle 220 of the vacuum cleaner 200, and the dust or the debris sucked by the suction nozzle 220 can enter the dust collecting cavity 11 from the communication port 31, the second air inlet pipe 3, and the air inlet port 12. The second air inlet pipe 3 can be detachably connected to an outer surface of the housing 1 by methods of screwing, clipping, plugging and the like; optionally, the second air inlet pipe 3 can be fixed to the outer surface of the housing 1 by methods of pasting, welding and the like. The second air inlet pipe 3 can be detachably connected to the suction nozzle 220 by methods of screwing, clipping, plugging and the like; optionally, the second air inlet pipe 3 can be fixed to the suction nozzle 220 by methods of pasting, welding and the like. The method for connecting the second air inlet pipe 3 to the outer surface of the housing 1 or the suction nozzle 220 are not limited herein in the present disclosure, as long as the stability and the reliability of a connection between the suction nozzle 220, the second air inlet pipe 3, and the dust collection device 100 can be ensured, and the dust or the debris can be prevented from leaking from a gap between the suction nozzle 220 and the second air inlet pipe 3 or a gap between the second air inlet pipe 3 and the outer surface of the housing 1.

Referring to FIG. 9, the second air inlet pipe 3 extends from the air inlet port 12 along a tangent plane of the outer surface of the housing 1. Under a combined action of the second air inlet pipe 3 and the inner surface of the dust collecting cavity 11, the dust or the debris entering the dust collecting cavity 11 from the second air inlet pipe 3 and the air inlet port 12 spirally settle along the inner surface of the dust collecting cavity 11.

Referring to FIG. 10, the second air inlet pipe 3 is inclined upward from the air inlet port 12, that is, the second air inlet pipe 3 gradually inclined downward from the communication port 31 to the air inlet port 12. An extension direction of the second air inlet pipe 3 is defined as c, the horizontal direction is defined as d, an inclination angle between the extension direction c of the second air inlet pipe 3 and the horizontal direction d is defined as β, the inclination angle βbetween the extension direction c of the second air inlet pipe 3 and the horizontal direction d is an acute angle and satisfies a following formula: 0 ° < β < 90°. The dust or the debris entering the dust collecting cavity 11 from the second air inlet pipe 3 and the air inlet port 12 has a tendency to continuously move downward, which further ensures that the dust or the debris can settle to the bottom of the dust collecting cavity 11.

Referring to FIG. 3 to FIG. 4, the housing 1 includes a barrel body 14 and a cover body 15, the barrel body 14 is provided with the bucket opening 141, and the cover body 15 is detachably covered on the bucket opening 141 and define the dust collecting cavity 11 with the barrel body 14. When a vacuum cleaning work ends or the dust collecting cavity 11 is full of the dust or the debris, the user can open the cover body 15, and dump the dust or the debris in the dust collecting cavity 11 out from the bucket opening 141, thereby facilitating the user to clean the dust collection device 100.

Referring to FIG. 4, the dust collection device 100 further includes a buckle assembly 4, the buckle assembly 4 includes a first buckle 41 and a second buckle 42 that can be interlocked with each other, one of the first buckle 41 and the second buckle 42 is disposed on an edge of the barrel opening 141, and the other one of the first buckle 41 and the second buckle 4 is disposed on an outer side of the cover body 15. The barrel body 14 is detachably connected to the cover body 15 by clamping the first buckle 41 and the second buckle 42, which is convenient for the user to install or remove the cover body 15 while ensuring the stability and the reliability of the connection therebetween.

In an embodiment, the first buckle 41 is a circle-shaped buckle extending outward from an edge of the bucket opening 141, an outer side of the cover body 15 is provided with a flange 151 folded downward, and the flange 151 covers the outer periphery of the ring-shaped buckle, so that a sealing performance of the cover body 15 covering the barrel body 14 can be ensured, and the dust or the debris in the dust collecting cavity 11 can be prevented from leaking out from a gap between the cover body 15 and the barrel body 14. An inner surface of the flange 151 is provided with one, two or more second buckles 42 that can be clamped and fitted with the ring-shaped buckle, and the ring-shaped buckle allows the cover plate 15 to clamp the ring-shape buckle when the cover plate 15 is covered on the barrel body in any direction, so that the user does not need to repeatedly align when covering the cover body 15, and the operation is simple and convenient. In addition, the plurality of the second buckles 42 are arranged to be spaced with each other along a circumference of the flange 151 to ensure that each side of the cover body 15 is reliably connected to the barrel body 14.

Referring to FIG. 5 to FIG. 6, in another embodiment, the first buckle 41 is disposed on an edge of the barrel opening 141, and the first buckle 41 is an ring-shaped buckle extending outward from an edge of the barrel opening 141, the second buckle 42 is disposed on an outer side of the cover body 15, and the second buckle 42 can rotate relative to the cover body 15 and be clamped to or separate from the first buckle 41. The second buckle 42 is clamped to or separated from the first buckle 41 when the second buckle 42 is rotated relative to the cover body 15. Thus, separating of the first buckle 41 from the second buckle 42 by accident caused by gravity can be avoided, thereby further improving a stability of the engagement between the first buckle 41 and the second buckle 42.

In some embodiments, one end of the second buckle 42 can rotate about the rotating shaft 43 relative to the cover body 15, and the other end of the second buckle 42 can move towards or away from the cover body 15 when the second buckle 42 rotates. When the cover body 15 should be opened, the second buckle 42 is firstly controlled to rotate around the rotating shaft 43 relative to the cover body 15, so that an end of the second buckle 42 away from the rotating shaft 43 is away from the cover body 15, the second buckle 42 separates from the first buckle 41, and the cover body 15 can be opened relative to the buckle body 14. When the cover body 15 should be covered, the second buckle 42 is firstly controlled to rotate around the rotating shaft 43 relative to the cover body 15, so that an end of the second buckle 42 away from the rotating shaft 43 is away from the cover body 15, so as to avoid mutual interference between the second buckle 42 and the first buckle 41. Then the cover body 15 is covered on the barrel opening 141, and finally the second buckle 42 is controlled to rotate around the rotating shaft 43 relative to the cover body 15, so that an end of the second buckle 42 away from the rotating shaft 43 is adjacent to the cover body 15 and the second buckle 42 is clamped to the first buckle 41.

In some embodiments, the number of the first buckles 41 and the positions of the first buckles 41 may also be provided one-to-one corresponding to those of the second buckles 42. When covering the cover body 15, the second buckle 42 is firstly aligned with the first buckle 41, and then the cover body 15 is covered, so that the second buckle 42 can be accurately clamped with the first buckle 41.

Referring to FIG. 11 to FIG. 12, in some embodiments, in order to prevent the dust or the debris in the dust collecting cavity from being sucked out from the air outlet port 13, the dust collection device 100 further includes a filter element 6 disposed on an upper wall of the dust collecting cavity 11, and the air outlet port 13 is in communication with the dust collecting cavity 11 via the filter element 6.

In this way, the dust or the debris can be blocked and filtered by the filter element 6, so as to reduce the amount of the dust or the debris in the dust collecting cavity 11 being sucked out from the air outlet port 13, so that a risk of damage to the vacuum cleaner body 210 is effectively reduced, and a service life of the dust collecting device is prolonged.

Furthermore, in some embodiments, the filter element 6 is detachably connected to the upper wall of the dust collecting cavity 11. In this way, the filter element 6 can be periodically replaced according to requirement, so as to avoid a case in which a cleaning effect is poor due to jam of the filter element 6.

In some embodiments, the filter element 6 has a filter cavity in communication with the air outlet port 13 and the dust collecting cavity 11. Furthermore, the filter cavity has a preset height. In this way, the filter cavity having the preset height has a larger space, which facilitates buffering an airflow, increasing a filtering area and filtering and reducing the dust.

Referring to FIG. 17 and FIG. 19, in some embodiments, a peripheral wall and/or a bottom wall of the filter cavity is provided with a filter hole 601.

Furthermore, a diameter of the filter element 6 gradually decreases from a side of the filter element 6 adjacent to the upper wall of the dust collecting cavity 11 to a side of the filter element 6 away from the upper wall of the dust collecting cavity 11. For example, the filter element 6 is trapezoidal column-shaped. It may be understood that, in some embodiments, a shape of the filter element 6 may alternatively be inverted conical-cylindrical shape.

In this way, a filtering area of the filter element 6 can be maximized, and a filtering effect and a ventilation efficiency can be maximized.

Referring to FIG. 19, in an embodiment, both a peripheral wall of the filter cavity and a bottom wall of the filter cavity are provided with the filter holes 601. The filter element 6 is in a shape of a hollow bowl. In this way, a distribution of the filter holes 601 can be more comprehensive and a filtering area of the filter holes 601 can be larger.

Referring to FIG. 16 to FIG. 18, in an embodiment, the peripheral wall of the filter cavity is provided with the filter holes 601. For example, the filter element 6 includes a mounting frame 61 and a filter screen 62. The filter holes 601 are provided on the filter screen 62. The filter screen 62 is disposed around a peripheral wall of the mounting frame 61, and is combined with the mounting frame 61 to form the filter cavity.

It can be understood that, in order to ensure that an airflow can be discharged from the air outlet port 13 through the filter screen 62, in the present embodiment, a bottom of the mounting frame 61 is a sealed plate, and the peripheral wall of the mounting frame 61 is hollow-shaped.

Furthermore, to reduce maintenance costs, in an embodiment, the filter screen 62 is detachably connected to the peripheral wall of the mounting frame 61.

Referring to FIG. 16 to FIG. 18, for example, in some embodiments, the filter element 6 further includes a restricting bottom plate 63 detachably connected to the bottom of the mounting frame 61, a diameter of the restricting bottom plate 63 is greater than a diameter of the bottom of the mounting frame 61 to form a first step portion 631, the peripheral surface of the mounting frame 61 adjacent to the air outlet port 13 radially protrudes out to define a second step portion 611, and two opposite sides of the filter screen 62 can be clamped between the first step portion 631 and the second step portion 611.

In this way, after the restricting bottom plate 63 is detached and separated from the bottom of the mounting frame 61, the filter screen 62 can be replaced. After the replacement, the restricting bottom plate 63 can be clamped to the mounting frame 61 again, so that the replaced filter screen 62 can be fixed.

Furthermore, clipping grooves may also be provided at opposite sides of the first step portion 631 and the second step portion 611, respectively, and opposite sides of the filter screen 62 are clamped in the two clipping grooves, so as to improve the installation firmness of the filter screen 62.

It can be understood that, in other embodiments, the filter screen 62 may also be clamped between the first step portion 631 and the upper wall of the dust collecting cavity 11.

Referring to FIG. 16 to FIG. 18, in an embodiment, the restricting bottom plate 63 is clamped to a bottom wall of the mounting frame 61. For example, the bottom wall of the mounting frame 61 is provided with a clamping hole 612, at least one pair of clamping feet 632 protrudes from restricting bottom plate 63, each of the clamping feet 632 have a certain ability to recover after deformation, and a restricting protrusion (not shown) protrudes from a side of each of the pair of the clamping feet 632 away from each other, respectively. In operation, the clamping foot 632 is deformed under an action of a force to allow the restricting protrusion to enter the clamping hole 612, and the restricting protrusion can be clamped and restricted to the bottom wall of the mounting frame 61 after the clamping foot 632 is restored, so that the restricting bottom plate 63 is connected and restricted to the mounting frame 61. It can be understood that the clamping foot 632 may also be deformed under the action of a force to make the restricting protrusion separate from the clamping hole 612, which will not be described in detail herein.

Furthermore, a guiding slope may also be provided on the restricting protrusion, so that the restricting protrusion can be separated from or clamped to the clamping hole 612 more easily.

Referring to FIG. 13 and FIG.14, furthermore, the mounting frame 61 is detachably connected to the upper wall of the dust collecting cavity 11. In some embodiments, the mounting frame 61 is provided with a clamping protrusion 602, the upper wall of the dust collecting cavity 11 is provided with a clamping groove 111, and the mounting frame 61 is detachably connected to the upper wall of the dust collecting cavity 11 via the cooperation between the clamping protrusion 602 and the clamping groove 111.

Referring to FIG. 20 to FIG. 22, in some embodiments, the filter element 6 includes at least one dust filter pipe 64. The dust filter pipe 64 includes a pipe portion 641 and a dust blocking portion 642 that are connected in sequence along an axis of the dust filter pipe 64, the pipe portion 641 is connected to and in communication with the air outlet port 13, the dust blocking portion 642 is provided with an air filter port 643 that is connected to and in communication with the dust collecting cavity 11, and a projection of an end of the dust blocking portion 642 away from the pipe portion 641 along the axis of the dust filter pipe 64 is capable of covering at least a part of the pipe orifice 6411 of the pipe portion 641.

In this way, a flow rate of an airflow can be buffered by the pipe portion 641 and the dust blocking portion 642 of the filter pipe and a flow direction of the airflow entering the air outlet port 13 can be changed by the pipe portion 641 and the dust blocking portion 642 of the filter pipe, thereby effectively preventing the dust or the debris with large particles from being vertically sucked out from the air outlet port 13 to cause an internal blockage and damage of the vacuum cleaner body.

Referring to FIG. 20 to FIG. 22, for example, in an embodiment of the present disclosure, the dust blocking portion 642 includes a first blocking wall 6421 extending from an end wall of the pipe portion 641 along the axis of the pipe portion 641 and a second blocking wall 6422 extending from the first blocking wall 6421 along an axis of the first blocking wall 6421, an inner surface of the second blocking wall 6422 is arc-shaped, and a projection of the second blocking wall 6422 along the axis of the pipe portion 641 is capable of covering at least a part of the pipe orifice 6411 of the pipe portion 641.

In this way, the second blocking wall 6422 can block the dust or the debris from being vertically sucked out from the air outlet port 13, and can change a flow direction of the airflow, so that the airflow can carry the particles from a side to the first blocking wall 6421. After the particles are blocked and buffered by the first blocking wall 6421, the particles slide off to the second blocking wall 6422 along the first blocking wall 6421 under the action of gravity, and an inner surface of the second blocking wall 6422 has a small cambered resistance, so that the dust or the debris slides off from the second blocking wall 6422 into the dust collecting cavity 11.

Referring to FIG. 20 to FIG. 22, it should be noted that, in some embodiments, the second blocking wall 6422 is half bowl-shaped. In other words, the second blocking wall 6422 extends downward from a bottom end of the first blocking wall 6421 and extends towards an axis of the pipe portion 641.

In order to further concentrate the airflow from the air outlet port 13 and further improve the filtration efficiency, the dust filter pipe 64 further includes a dust guiding portion 644, and an inner surface of the dust guiding portion 644 is sequentially connected to an inner surface of the first blocking wall 6421 and an inner surface of the second blocking wall 6422, and is capable of sheltering a part of the air filter port 643 along a circumference of the air filter port 643.

In this way, the dust guiding portion 644 can guide more airflow into the dust blocking portion 642 and the pipe portion 641 from a side of the dust guiding portion 644, thereby increasing the airflow passing through the filter element 6 and improving an airflow efficiency and a filtering speed. Moreover, the dust guiding portion 644 can further increase a buffer area, and the dust or the debris in the airflow can also be blocked by the dust guiding portion 644, so as to slide along the inner surface of the dust guiding portion 644, the inner surface of the first blocking wall 6421, and the second blocking wall 6422, thereby further improving a dust reduction effect and reducing a probability of particulate impurities being sucked out by the air outlet port 13.

Referring to FIG. 20 to FIG. 22, furthermore, the inner surface of the dust guiding portion 644 is an arc-shaped surface.

In this way, the inner surface of the dust guiding portion 644 is an arc-shaped surface, which is easier to provide a guiding effect, so that the airflow quickly passes through the inner surface of the dust guiding portion 644 and enters the dust blocking portion 642 and the pipe portion 641.

Furthermore, in some embodiments, the dust guiding portion 644 circumferentially extends along a side end of the first blocking wall 6421, and a part of the pipe portion 641 and a part of the filter port 643 can be covered. Furthermore, a curvature radius of the inner surface of the dust guiding portion 644 is smaller than a curvature radius of the inner surface of the first blocking wall 6421, optionally, a curvature radius of the inner surface of the dust guiding portion 644 is smaller than a curvature radius of the inner surface of the pipe portion 641. In this way, the smaller the curvature radius of the dust guiding portion 644 is, the smoother the change of the arc curvature of the inner surface of the dust guiding portion 644 is, and the easier it is to guide the airflow and buffer the airflow, thereby facilitating more stable dust reduction.

Referring to FIG. 20 to FIG. 22, furthermore, in an embodiment, the filter element 6 includes a plurality of dust filter pipes 64 arranged along a circumference of the air outlet port 13 around an axis of the air outlet port 13, and the orientations of the inner surfaces of the plurality of the second blocking walls 6422 of the plurality of dust filter pipes 64 are arranged in staggered manner along the circumference of the air outlet port 13 around the axis of the air outlet port 13. In this way, the dust reduction effect can be further enhanced, and the risk of dust or impurities being sucked out from the air outlet port 13 to block the interior of the device can be further reduced.

Furthermore, in order to make the airflow pass through the filter pipes 64 more evenly and be filtered more evenly, in the present embodiment, the filter element 6 includes four dust filter pipes 64. Furthermore, the orientations of adjacent two dust blocking portions 642 are circumferentially staggered by 90 degrees around a center of the air outlet port 13. It may be understood that, in some embodiments, the number of the dust filter pipes 64 disposed in the filter element 6 is not limited, and degrees at which the orientations of two adjacent dust blocking portions 642 are staggered around a circumferential direction of a center of the air outlet port 13 may also be flexibly set based on a requirement.

Referring to FIG. 20 to FIG. 22, the filter element 6 further includes a connecting pipe 65, and the connecting pipe 65 is provided with a connecting cavity 651. An upper wall of the connecting cavity 651 is connected to and in communication with the air outlet port 13. The dust filter pipe 64 protrudes from a side of a bottom wall of the connecting cavity 651 away from the air outlet port 13, and all dust filter pipes 64 are in communication with the air outlet port 13 via the connecting cavity 651.

In this way, filtered gas from different dust filter pipes 64 can be concentrated and quickly discharged from the air outlet port 13.

Referring to FIG. 23, the present disclosure further provides a vacuum cleaner 200, the vacuum cleaner 200 includes a vacuum cleaner body 210, a suction nozzle 220 and the above dust collection device 100. The vacuum cleaner body 210 is connected to and in communication with the air outlet port 13, and the suction nozzle 220 is connected to and in communication with the air inlet port 12. When the vacuum cleaner 200 is in operation, the dust or the debris can be suck in via the suction nozzle 220, and enter the dust collecting cavity 11 from the air inlet port 12. A part of the dust or the debris that settle to the bottom of the dust collecting cavity 11 are sucked up again from the bottom of the dust collecting cavity 11 under an action of dust suction airflow of the vacuum cleaner body 210, and be discharged from the dust collecting cavity 11 via the air outlet port 13 and enter the vacuum cleaner body 210.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features are described in the embodiments. However, as long as there is no contradiction in the combination of these technical features, the combinations should be considered as in the scope of the present disclosure.

The above-described embodiments are only several implementations of the present disclosure, and the descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present disclosure. It should be understood by those of ordinary skill in the art that various modifications and improvements can be made without departing from the concept of the present disclosure, and all fall within the protection scope of the present disclosure. Therefore, the patent protection of the present disclosure shall be defined by the appended claims.