CN210810786U

CN210810786U - Gas-dust separation device and vacuum cleaner

Info

Publication number: CN210810786U
Application number: CN201920875114.9U
Authority: CN
Inventors: 阳恩贵; 李来宾; 王振华; 罗帅
Original assignee: Tuopu Jinggong Intelligent Manufacturing Shaoyang Co ltd
Current assignee: Tuopu Jinggong Intelligent Manufacturing Shaoyang Co ltd
Priority date: 2019-04-29
Filing date: 2019-06-12
Publication date: 2020-06-23
Anticipated expiration: 2029-06-12
Also published as: CN110200541B; CN110200542B; CN110151055B; CN210810770U; CN210582358U; CN210541335U; CN110279345A; CN110151055A; CN210408262U; CN110179386A; CN110200541A; CN110151053A; CN110200542A; CN210582359U; CN110151056A; CN110279344A; CN210582357U; CN210408269U

Abstract

The air-dust separation device comprises a main shell, a first air guide body, a second air guide body and an annular filter screen, wherein the main shell is in a barrel shape with an opening at the upper part and is provided with a barrel bottom wall body, a barrel side wall body and a barrel inner cavity enclosed by the barrel bottom wall body and the barrel side wall body, and the first air guide body, the second air guide body and the annular filter screen are arranged in the barrel inner cavity; the beneficial technical effects are that: because the gas-dust separation device comprises a five-stage gas-dust separation structure, heavier or larger impurities are filtered out through the first-stage gas-dust separation structure, larger impurities are filtered out through the second-stage gas-dust separation structure, smaller particle impurities are filtered out through the third-stage gas-dust separation structure, and fine and micro dust is respectively filtered out through the fourth-stage gas-dust separation structure and the fifth-stage gas-dust separation structure. Therefore, the sundries can be filtered in a grading way according to the volume, larger sundries are filtered out firstly, the flow path of the larger sundries in the air-dust separating device is shortened, and the flow resistance of airflow increased by the flow of a large amount of the larger sundries is avoided.

Description

Gas-dust separation device and vacuum cleaner

Technical Field

The invention relates to a gas-dust separating device, a vacuum cleaner using the gas-dust separating device and a multi-stage gas-dust separating method.

Background

Along with the daily improvement of household cleanliness requirements of people, the dust collector also gradually becomes one of necessary electrical equipment for furniture cleaning. Patent 201510044589.X discloses a second grade dirt gas separation structure, this structure includes a fan housing dirt section of thick bamboo and spiral dirt gas separator, realize the first order separation of dirt gas through the whirlwind cover, the inside of whirlwind cover is provided with a second grade whirlwind section of thick bamboo and is located the spiral dirt gas separator of tube socket, the dirt gas after first order separation is under this spiral dirt gas separator's guide, form the rotatory air current to the bobbin base at second grade whirlwind section of thick bamboo inner wall, dust in this air current is revolved to the bobbin base under the centrifugal force drives and is collected in second grade collection dirt space, the air in the rotatory air current is taken out by the negative pressure, realize the separation of second grade dirt gas. The secondary dust-gas separation structure has the advantages of less parts, simplified assembly process and convenience in improving the comprehensive performance of the whole machine. Meanwhile, the structure has small volume, can effectively reduce the dust cup space occupied by the secondary separation structure, realizes the maximum dust storage volume, improves the dust collection efficiency, and is suitable for dust collectors of various types and sizes.

Secondly, patent 201820218242.1 discloses a cyclone cone for a vacuum cleaner, a cyclone separator and a vacuum cleaner, the cyclone cone comprising: the cyclone casing is provided with a bottom wall and a side peripheral wall to limit a chamber, the bottom wall of the cyclone casing is provided with a mounting hole, the cross section of the side peripheral wall is shaped into a non-circular shape, and the cyclone casing is internally provided with a guide surface which extends spirally upwards along the central axis of the mounting hole. According to the utility model discloses a cyclone cone for dust catcher, cross-sectional shape through the side perisporium with the cyclone shell sets up to the non-circular, utilize non-circular structure to have a plurality of centre of a circle and different radial characteristics, when having the side perisporium rotation of dirt gas along the cyclone shell, obtain the biggest centrifugal force when rotatory radius minimum department to the side perisporium, thereby it is rotatory with higher speed to make rubbish and foreign matter, and thrown away with the fastest speed, and then improved cyclone cone separating speed and separation efficiency, the separation performance of cyclone cone has been improved promptly.

Disclosure of Invention

After many research experiments, the dust removing effect of the above-mentioned patents 201510044589.X and 201820218242.1 is not ideal, and a large amount of dust particles are collected on the last layer of filter cloth assembly after a short time of use, so that the filter cloth assembly needs to be replaced frequently. This undoubtedly increases the cost of later use, and weakens the experience of use. In order to solve the above problems, it is necessary to optimize the gas-dust separation structure to improve the gas-dust separation effect. The invention provides a gas-dust separation device, which comprises a main shell, a first air guide body, a second air guide body and an annular filter screen, wherein the main shell is in a barrel shape with an upper opening and is provided with a barrel bottom wall body, a barrel side wall body and a barrel inner cavity enclosed by the barrel bottom wall body and the barrel side wall body, and the first air guide body, the second air guide body and the annular filter screen are arranged in the barrel inner cavity; it is characterized in that the device comprises a five-level gas-dust separation structure, wherein:

the first-stage gas-dust separation structure comprises a windward channel, an air inlet of the gas-dust separation device is communicated with the windward channel, an air outlet of the windward channel is communicated with a primary dust collection cavity in the barrel, the windward channel is positioned in the upper space of the primary dust collection cavity, and the windward channel is used for forming cyclone in one direction to enable heavier or larger impurities to be directly separated and sunk into the primary dust collection cavity below the windward channel to realize first-stage gas-dust separation;

the second-stage gas-dust separation structure comprises the first air guide body, the first air guide body comprises a first main body and a first radial skirt edge which is arranged on the first main body and protrudes in the radial direction, a first air passing hole is formed in the first radial skirt edge and used for separating the barrel inner cavity in the axial direction, the first air passing hole is communicated with the barrel inner cavity above the first radial skirt edge and the primary dust collection cavity below the first radial skirt edge, and the first air passing hole is used for filtering larger impurities to realize second-stage gas-dust separation so as to greatly reduce the amount of large-particle impurities flowing to a downstream path behind the first air passing hole;

a third stage gas-dust separation structure, including the annular filter screen, where the second air guiding body includes a second main body and a second radial skirt edge protruding in the radial direction and disposed on the second main body, the second radial skirt edge is disposed above the first radial skirt edge, the annular filter screen is disposed between the first radial skirt edge and the second radial skirt edge, a middle accommodating cavity is disposed between the annular filter screen and the barrel sidewall body, the first air passing hole is communicated with the middle accommodating cavity, the second radial skirt edge is used for partitioning the barrel accommodating cavity in the axial direction and forcing air reaching the middle accommodating cavity to pass through the annular filter screen, an air passing hole area of the annular filter screen is smaller than an air passing hole area of the first air passing hole, and the annular filter screen is used for filtering smaller particulate impurities to realize third stage gas-dust separation;

a fourth-stage air-dust separation structure, including the first air guide body and a second air guide body, where the first main body of the first air guide body has an inner cavity, the second main body of the second air guide body also has a substantially funnel shape, and includes a second bucket body and a second bucket tail connected below the second bucket body, the second radial skirt is disposed on the second bucket body, the inner side of the second main body has a central channel, part of the second main body is inserted into the inner cavity of the first main body, a fine dust collection cavity is located in a space below the second main body, an air guide gap is formed between the second main body and the annular filter screen, and between the second main body and the first main body, and the air guide gap is communicated with the central channel; the outer side of the second bucket body is provided with a bucket body air guide blade for guiding air, the bucket body air guide blade is connected to the lower surface of the second radial skirt edge, and the bucket body air guide blade is used for forming cyclone in the air guide gap to separate fine dust into the fine dust collecting cavity to realize fourth-level gas-dust separation;

the fifth-stage air-dust separation structure comprises the first air guide body and a second air guide body, wherein a bucket tail air guide blade for guiding air is arranged on the outer side of the second bucket tail, and the bucket body air guide blade and the bucket tail air guide blade are arranged in opposite air guide directions, so that the rotation direction of the air guided by the bucket body air guide blade is opposite to the cyclone direction of the air guided by the bucket tail air guide blade; and the bucket tail air guide blade is used for forming cyclone in the air guide gap so as to further separate fine dust into the fine dust collection cavity to realize fifth-level gas-dust separation.

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: because gas-dust separator is including five grades of gas-dust isolating construction, through first order gas-dust isolating construction filters out heavier or great debris, through second level gas-dust isolating construction filters out great debris, through third level gas-dust isolating construction filters out less granule debris, through fourth level gas-dust isolating construction with fifth level gas-dust isolating construction filters out the fine particle dirt respectively. So can filter debris according to the volume size in grades, filter great debris earlier and shorten great debris and be in flow path among the gas-dust separator avoids the flow resistance that increases the air current of a large amount of great debris, can also filter the fine dirt for the low reaches and provide favorable condition, so improved the filter effect effectively.

The technical scheme is that a filter cloth assembly is arranged above the outlet of the central channel and used for filtering fine particles in air to realize sixth-level gas-dust separation.

According to a further technical scheme, an upper annular edge extending upwards along the axial direction is further arranged on the second radial skirt edge, and the filter cloth assembly is arranged in a space defined by the upper annular edge. Therefore, air entering the area defined by the upper annular edge after passing through the central channel can be discharged to the external space only after being filtered by the filter cloth assembly, and the filtering effect and the air cleanliness are effectively guaranteed.

The technical scheme is that a diffusion gap is reserved between the lower surface of the filter cloth assembly and the outlet of the central channel, and the diffusion gap is used for enabling air coming out of the outlet of the central channel to be uniformly diffused to the whole lower surface of the filter cloth assembly, so that the filtering efficiency is improved, and the wind resistance is reduced.

According to a further technical scheme, a jacking device is further arranged on the second radial skirt edge, the filter cloth assembly is placed on the jacking device, and the jacking device is used for forming the diffusion gap; the jacking device is a jacking cylinder which is arranged on the second radial skirt edge and extends along the axial direction, or an upper annular edge which extends upwards along the axial direction is further arranged on the second radial skirt edge, the filter cloth component is arranged in a space defined by the upper annular edge, and the jacking device is a positioning spigot arranged on the upper annular edge.

The first radial skirt is configured to be provided with a first air passing hole and a closed area which is not provided with the first air passing hole, the windward channel is arranged below the closed area of the first radial skirt, the windward channel comprises a first protruding wing and a second protruding wing which are arranged on the outer surface of the first air guide body and protrude in the radial direction, the first protruding wing and the second protruding wing are arranged in an L shape, the first protruding wing and the first radial skirt are arranged approximately in parallel, the second protruding wing and the first radial skirt are arranged approximately in perpendicular, and one end of the second protruding wing is connected with the first radial skirt, and the other end of the second protruding wing is connected with the first protruding wing; the first protruding wing piece, the second protruding wing piece, the closed area of the first radial skirt edge, the outer wall of the first main body and the barrel side wall body are combined to form the windward channel; the air inlet is arranged on the barrel side wall to form a barrel side wall inlet which is communicated with the windward channel. According to the technical scheme, the windward channel is arranged below the closed area of the first radial skirt edge, so that the situation that air directly enters the middle accommodating cavity after entering the primary dust collecting cavity can be avoided, the air firstly passes through the first air passing hole after forming rotary airflow on the upper portion of the primary dust collecting cavity and then enters the middle accommodating cavity is avoided, and the situation that the air can flow away for a certain distance along the outer side surface of the first bucket body to form cyclone and then enters the middle accommodating cavity through the first air passing hole is facilitated.

The first main body of the first air guide body is roughly funnel-shaped and comprises a first bucket body and a first bucket tail connected to the lower surface of the first bucket body, and the first radial skirt is arranged on the first bucket body; first fill tail downwardly extending butt receive thereby the branch of thin dirt collection chamber, elementary dirt collection chamber is put in the interior, the exterior space of first fill tail, thereby the bucket bottom wall body can be in with the conversion mode swing joint of open mode or closed condition open can let when leading to the bottom wall body respectively the rubbish that accumulates pours out in the thin dirt collection chamber, the elementary dirt collection chamber.

The further technical scheme can also be that a central garbage outlet is arranged on the wall body of the barrel bottom, the first bucket tail extends downwards to abut against the central garbage outlet, and a hole plug is arranged on the central garbage outlet; the central garbage outlet is used for discharging garbage in the fine dust collecting cavity in the first bucket tail.

The technical scheme includes that the first radial skirt edge is provided with inclined skirt edge air guide blades, air passing gaps are formed between the front and rear adjacent skirt edge air guide blades and form the first air passing holes, axial projections of the front and rear adjacent skirt edge air guide blades are at least partially overlapped, and the skirt edge air guide blades are used for enabling air passing through the first air passing holes and entering the middle containing cavity to form cyclone, so that tertiary air-dust separation is strengthened, and dust adhesion on the annular filter screen can be reduced.

The skirt-shaped air guide blades and the windward channel are arranged in opposite air guide directions, so that the rotation direction of the windward channel for allowing air to be in the upper part of the primary dust collecting cavity is opposite to the cyclone direction of the skirt-shaped air guide blades for allowing air to be in the middle accommodating cavity. This can achieve better gas-dust separation.

The technical scheme can be further that the bucket body air guide blades and the skirt edge air guide blades are arranged in opposite air guide directions, so that the rotation direction of air in the air guide gap by the bucket body air guide blades is opposite to the cyclone direction of air in the middle accommodating cavity by the skirt edge air guide blades. This can achieve better gas-dust separation.

The bucket body air guide blades extend on the outer side surface of the second bucket body from top to bottom in an inclined mode, and the windward side of the bucket body air guide blades is perpendicular to the outer side surface of the second bucket body; the bucket tail air guide blade extends on the outer side surface of the second bucket tail in an inclined mode from top to bottom, and the windward side of the bucket tail air guide blade is perpendicular to the outer side surface of the second bucket tail. The bucket body air guide blades extend on the outer side surface of the second bucket body from top to bottom in an inclined mode, and the extending track of the bucket body air guide blades is defined to be arranged in an inclined mode. The bucket tail air guide blades extend on the outer side surface of the second bucket tail from top to bottom in an inclined mode, and the extending track of the bucket tail air guide blades is defined to be arranged in an inclined mode. Thus, the airflow forms cyclone under the drainage action of the bucket body air guide blade and the bucket tail air guide blade.

The first main body of the first air guide body is roughly funnel-shaped and comprises a first bucket body and a first bucket tail connected to the lower surface of the first bucket body, and the first radial skirt is arranged on the first bucket body; first bucket body is including being cylindrical first bucket shape bucket body, connecting be the first beam shape bucket body that is binding off form below the first bucket shape bucket body, first fill tail connect be in below the first beam shape bucket body, first radial shirt rim setting is in the last position of following of first bucket shape bucket body.

The second bucket tail and the bucket tail wind-guiding blades extend downwards in the first bucket body to the junction position between the first bucket body and the first beam-shaped bucket body. In this way, the position of the beam opening can be used for further reducing the downward diving of air into the lower space of the fine dust collecting cavity to stir up the collected fine dust.

The further technical scheme can also be that the rotating diameter of the farthest outer end point of the bucket body air guide blade is larger than that of the farthest outer end point of the bucket tail air guide blade.

The technical scheme includes that a first radial skirt edge is provided with a first mounting groove with an opening facing the second radial skirt edge, a second radial skirt edge is provided with a second mounting groove with an opening facing the first radial skirt edge, and an upper net edge and a lower net edge of the annular filter screen are respectively arranged in the first mounting groove and the second mounting groove.

On the basis, the invention also provides a vacuum cleaner applying the air-dust separating device, which is characterized by comprising a main body unit, a connecting pipeline and a dust picking unit, wherein the main body unit comprises a power device and the air-dust separating device, the power device is used for generating suction power, the air-dust separating device is communicated with the power device and is used for separating dust in air, one end of a pipeline cavity in the connecting pipeline is communicated with an air inlet of the air-dust separating device, the other end of the pipeline cavity is communicated with the dust picking unit, and the dust picking unit is used for picking up dust on a deposition object surface by using the suction power and can provide the picked-up dust to the air-dust separating device through the pipeline cavity in the connecting pipeline.

The main body unit further comprises a hand-holding device, the hand-holding device is used for being held and operated by users, the hand-holding device is arranged on the side edge of the gas-dust separating device, and the power device, the gas-dust separating device and the hand-holding device are connected with one another to form an integral device.

Finally, the invention also provides a multistage gas-dust separation method, which is provided with an air inlet, wherein a primary dust collection cavity, a middle accommodating cavity, an air guide gap and a central channel are sequentially arranged at the downstream of the air inlet,

firstly, arranging a windward channel in the upper space of the primary dust collecting cavity, leading air to firstly enter the windward channel from the air inlet and then enter the primary dust collecting cavity, leading the air to form rotating wind in one direction by means of the windward channel and enter the upper space in the primary dust collecting cavity, and leading the air to firstly throw off heavier or larger impurities and deposit to the lower space of the primary dust collecting cavity to realize primary air-dust separation when the air rotates and moves in the primary dust collecting cavity;

secondly, arranging the middle accommodating cavity at the downstream of the primary dust collecting cavity, wherein the bottom wall body of the middle accommodating cavity is provided with a first air passing hole, so that air passes through the first air passing hole from the primary dust collecting cavity and then continuously moves into the middle accommodating cavity, heavier or larger impurities are further filtered by using the opportunity of passing through the first air passing hole and deposited in the lower space of the primary dust collecting cavity, and secondary gas-dust separation is realized;

thirdly, arranging the air guide gap at the downstream of the middle accommodating cavity, and further discharging air entering the central channel from the air guide gap; an annular filter screen is arranged between the middle accommodating cavity and the air guide gap, the aperture of the annular filter screen is far smaller than the area of the air passing hole of the first air passing hole, air passes through the annular filter screen and then continuously moves into the air guide gap, smaller impurities are further filtered by the opportunity of passing through the annular filter screen and deposited at the bottom of the middle accommodating cavity to realize third-stage air-dust separation, and the filtered smaller impurities are accommodated by the middle accommodating cavity;

and fourthly, the air entering the air guide gap continuously moves forwards in a rotating mode, fine dust is further thrown off and deposited in the lower space of the air guide gap when the air rotates and moves, air-dust separation is further realized, and a fine dust collecting cavity is formed in the lower space of the air guide gap and used for collecting impurities of fine particles.

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: according to the invention, four gas-dust separation methods are adopted, so that heavier or larger impurities are filtered out by the first gas-dust separation method, larger impurities are filtered out by the second gas-dust separation method, smaller particle impurities are filtered out by the third gas-dust separation method, and fine dust is filtered out by the fourth gas-dust separation method. So can filter debris according to the volume size in grades, filter great debris earlier and shorten great debris and be in flow path among the gas-dust separator avoids the flow resistance that increases the air current of a large amount of great debris, can also filter the fine dirt for the low reaches and provide favorable condition, so improved the filter effect effectively.

The first air passing hole is inclined, so that air entering the middle accommodating cavity from the first air guide hole is formed into rotating airflow again, and the rotating direction of the air at the upper part in the primary dust collecting cavity is opposite to the cyclone direction of the air in the middle accommodating cavity. Therefore, air entering the middle containing cavity through the first air passing hole forms cyclone, so that the third-stage air-dust separation is enhanced, and dust can be prevented from being stuck on the annular filter screen.

The air guiding gap is provided with two stages of cyclone mechanisms which are arranged up and down, namely an upper cyclone mechanism and a lower cyclone mechanism, the cyclone mechanisms are guided by the cyclone mechanisms to form rotating air flow, each cyclone mechanism comprises air guiding blades, the rotating direction of air is opposite to that of air which is guided by the lower cyclone mechanism by the upper cyclone mechanism, the fourth stage air-dust separation is realized by the upper cyclone mechanism, and the fifth stage air-dust separation is realized by the lower cyclone mechanism. According to the technical scheme, the upper cyclone mechanism enables the rotation direction of air to be opposite to that of air which is enabled to be rotated by the lower cyclone mechanism, so that a better air-dust separation effect can be achieved. In addition, fine dust is further separated out through cyclone formed by the lower stage cyclone mechanism, so that fifth stage gas-dust separation is realized.

The further technical scheme can also be that a filter cloth is arranged above the air outlet of the central channel, and the filter cloth realizes the sixth-stage gas-dust separation.

The main shell is in a barrel shape with an opening at the upper part and is provided with a barrel inner cavity, and the air inlet is arranged on the main shell; still set up first wind-guiding body, second wind-guiding body, first wind-guiding body detachably places the intracavity is contained to the bucket, at least part second wind-guiding body detachably places in first wind-guiding body, second wind-guiding body with form between the first wind-guiding body wind-guiding clearance, the inboard space of second wind-guiding body forms central channel.

The further technical scheme can also be that the bottom of the main shell can move in a switching mode of an opening state or a closing state, so that the garbage accumulated in the primary dust collecting cavity can be poured out when the bottom of the main shell is opened.

Drawings

Fig. 1 is a schematic perspective view of a vacuum cleaner to which the present invention is applied;

fig. 2 is a schematic front plan view of a main body unit 100 to which the present invention is applied;

fig. 3 is a schematic sectional structure view of the main body unit 100;

FIG. 4 is a schematic perspective view of the gas-dust separating apparatus 400;

FIG. 5 is a schematic exploded view of the gas-dust separating apparatus 400;

FIG. 6 is a schematic front view of the gas-dust separating apparatus 400;

FIG. 7 is a schematic cross-sectional view of the gas-dust separating apparatus 400;

fig. 8 is a schematic perspective view of the first wind guide body 1;

fig. 9 is a schematic structural view in the front view direction of the second wind guide 2;

fig. 10 is a schematic perspective view of the assembled first air guide body 1 and second air guide body 2;

fig. 11 is an exploded view of the main body unit 100;

FIG. 12 is a schematic perspective view of the first fusion;

fig. 13 is a schematic perspective view of the embedded air guiding box 83;

fig. 14 is a schematic perspective view of the power module 871;

fig. 15 is an enlarged view of a portion a of fig. 3.

Detailed Description

The structure and the dust collecting method of the vacuum cleaner applying the technical scheme of the invention are further explained with the accompanying drawings.

As shown in fig. 1 to 15, a vacuum cleaner includes a main unit 100, a connection duct 200, and a dust pick-up unit 300, wherein the main unit 100 includes a power unit 700, an air-dust separating apparatus 400, and a hand-held apparatus 800, and the power unit 700, the air-dust separating apparatus 400, and the hand-held apparatus 800 are connected to each other as an integrated apparatus. Wherein, the air inlet 43 of the air-dust separating device 400 is communicated with the dust pick-up unit 300, and the main air outlet channel is communicated with the power device 700.

The power device 700 is used for generating suction power, namely vacuum negative pressure, through a rotating motor and fan blades dragged by the rotating motor, the air-dust separating device 400 is detachably connected with the power device 700 and is used for separating dust in air by utilizing the principle of filtration and centrifugal separation through the suction power, and the hand-held device 800 is arranged at the side edges of the air-dust separating device 400 and the power device 700 and is used for being held, operated and supported by a user to connect the power device 700 and the air-dust separating device 400. The hand-held device 800 is provided with a transition passage 81 communicated with the gas-dust separating device 400, the pipe cavity of the connecting pipe 200 is located upstream of the transition passage 81 and the tail end of the connecting pipe 200 is connected to the hand-held device 800, the front end of the connecting pipe 200 is connected to the dust pick-up unit 300, the dust pick-up unit 300 is used for picking up dust on a deposition surface by using suction power and can provide the picked-up dust to the gas-dust separating device 400 through the pipe cavity of the connecting pipe 200 and the transition passage 81. The dust pick-up unit 300 may be a mechanism including a roller brush such as a mop of the present embodiment, or may be a suction nozzle directly for contacting the deposition surface.

In another embodiment, the transition duct 81 may not be provided on the hand-held device 800 but directly on another component connected to the dust and gas separating device 400, or the transition duct 81 may be omitted and the connecting duct 200 may be connected directly to the air inlet of the dust and gas separating device 400.

Although the principle of air-dust separation is well known, different specific separation structures make the differences of dust removal effect, use cost, service life and the like of the produced dust collector obvious. The embodiment of the invention adopts a specific scheme that:

as shown in fig. 4 to 10, the air-dust separating apparatus 400 includes a first air guide body 1, a second air guide body 2, an annular filter net 3, and a main casing 4. The main housing 4 is a barrel with an upper opening and has a barrel bottom wall 41, a barrel side wall 42, and a barrel cavity 40 enclosed by the barrel bottom wall 41 and the barrel side wall 42, the barrel bottom wall 41 or the barrel side wall 42 of the main housing 4 defines a central axis thereof, but is not equal to that the main housing 4 must be a standard cylindrical structure, or an elliptical structure, etc. Next, the tub bottom wall 41 is movably connected to the tub side wall 42 in a manner of switching between an open state and a closed state.

An air inlet 43 is provided in the bucket sidewall 42 of the main housing 4, and since it is located on the bucket sidewall 42, for this reason, it is also referred to as a bucket sidewall inlet 43, the bucket sidewall inlet 43 is used for allowing air (gas dust) in the transition passage 81 to pass through the bucket sidewall 42 into the primary dust collecting chamber 52 in the bucket accommodating chamber 40. In other embodiments, the air inlet 43 may also be disposed on the tub bottom wall 41 of the main housing 4 or other suitable locations.

The first wind guide body 1 is detachably placed in the tub content chamber 40. The axis of the first wind guide body 1 is approximately overlapped with or parallel to the axis of the barrel cavity 40. The first air guide body 1 comprises a first main body 10, the first main body 10 is roughly funnel-shaped, that is, the upper volume is large, the lower volume is small, and the upper and lower chambers are communicated and connected, the first main body 10 comprises a first bucket body 11 and a first bucket tail 12 connected to the lower surface of the first bucket body 11, the first bucket body 11 and the first bucket tail 12 are arranged in the bucket inner chamber 40 along the axial direction of the bucket inner chamber 40, and the first bucket body 11 and the first bucket tail 12 of the first main body 10 are respectively provided with an inner chamber 16 which can be communicated with each other. The first bucket tail 12 extends downward and abuts against the bucket bottom wall 41, so that a fine dust collecting cavity 51 and a primary dust collecting cavity 52 capable of containing garbage are formed in the inner space and the outer space of the first bucket tail 12 respectively, or the first bucket tail 12 extends downward and abuts against the bucket bottom wall 41 in the primary dust collecting cavity 52, and the fine dust collecting cavity 51 is located at the lower part of the inner side containing cavity 16, namely, at the inner side section of the first bucket tail 12. The bucket bottom wall 41 is movably connected to the bucket sidewall 42 in a switching manner between an open state and a closed state, so that the garbage respectively accumulated in the fine dust collecting chamber 51 and the primary dust collecting chamber 52 can be discharged when the bucket bottom wall 41 is opened. Further, a central waste outlet 410 is arranged on the bottom wall 41 of the barrel, the first bucket tail 12 extends downward to abut against the central waste outlet 410, and a hole plug 411 is arranged on the central waste outlet 410. The central waste outlet 410 is used for discharging fine waste in the fine dust collecting chamber 51 located in the first hopper tail 12.

First bucket body 11 is including being first tubbiness bucket body 111 of column, connecting be the first beam shape bucket body 112 of binding off form below first tubbiness bucket body 111, first fill tail 12 is connected below first beam shape bucket body 112. The first air guiding body 1 further includes a first radial skirt 13 protruding in the radial direction and provided on the first barrel-shaped body 111, and the first radial skirt 13 is provided with a first air passing hole 130, so that the first radial skirt 13 becomes a bottom wall of the intermediate accommodating cavity 5 to be discussed below. When the first wind guide body 1 is placed in the barrel accommodating cavity 40, the first radial skirt 13 is located above the barrel side wall inlet 43.

The first radial skirt 13 serves to partition the bucket receptacle 40 in the axial direction, so that air located below the first radial skirt 13 cannot flow (or only a very small amount of leakage air) from the periphery of the first radial skirt 13 up onto the first radial skirt 13, but must flow through the first air passage holes 130 above the first radial skirt 13; secondly, the first radial skirt 13 also defines the upper boundary of the primary dust collection chamber 52, i.e. the primary dust collection chamber 52 is located below the first radial skirt 13. The first air passing hole 130 is not only used for communicating the barrel inner chamber 40 located above the first radial skirt 13 and the barrel inner chamber 40 located below the first radial skirt (i.e. the primary dust collecting chamber 52), but also used for filtering larger impurities to realize secondary air-dust separation, thereby greatly reducing the amount of large particle impurities flowing to the downstream path after the first air passing hole 130. Further, the first radial skirt 13 is provided with inclined skirt wind guide blades 131, an air passing gap is formed between the front and rear adjacent skirt wind guide blades 131, the air passing gap forms the first air passing hole 130, axial projections of the front and rear adjacent skirt wind guide blades 131 are at least partially overlapped, so that kinetic energy and efficiency of cyclone are greatly improved, the skirt wind guide blades 131 are used for enabling air passing through the first air passing hole 130 to form cyclone in the middle accommodating cavity 5 outside the annular filter screen 3 to be discussed below, and the cyclone formed in the middle accommodating cavity 5 can not only enhance a third-stage air-dust separation effect to be discussed below, but also reduce dirt and dust from being adhered to the annular filter screen 3, so that resistance in air flow is reduced. The first radial skirt 13 is configured as a ventilation zone 132 provided with first ventilation holes 130 and a closed zone 133 not provided with first ventilation holes, and the tub side wall inlet 43 is located directly below the closed zone 133 of the first radial skirt 13. Therefore, the air can be prevented from directly entering the space above the first radial skirt 13 after coming out from the barrel side wall inlet 43, and can form a rotational flow in the lower space, then pass through the first air passing hole 130 and enter the space above the first radial skirt 13, so that the air can flow away for a certain distance along the outer side surface of the first bucket body 11 to form a cyclone, and then enter the middle accommodating cavity 5 through the first air passing hole 130.

A windward channel 54 is provided below the closed region 133 of the first radial skirt 13, the windward channel 54 being located in the upper space of the primary dust collection chamber 52. A first protruding wing 14 and a second protruding wing 15 protruding in the radial direction are further disposed on the outer surface of the first bucket body 111, and the first protruding wing 14 and the second protruding wing 15 are correspondingly located below the closed region 133 and arranged in an L shape; said first projecting tabs 14 and said first radial skirt 13 are arranged substantially parallel to each other and do not need to extend too long as it is ensured that a cyclone guide is formed, for which purpose the extension of said first projecting tabs 14 in the circumferential direction substantially corresponds to the extension of said closed zone 133 in the circumferential direction; the second projecting fin 15 is arranged substantially perpendicular to the first radial skirt 13 and one end of the second projecting fin 15 is connected to the first radial skirt 13 and the other end is connected to the first projecting fin 14 so as to close one port of the windward path 54, and the second projecting fin 15 is used to force the air entering into the windward path 54 to rotate in one and the same direction. The five wall bodies of the first protruding wing 14, the second protruding wing 15, the closed region 133 of the first radial skirt 13, the outer wall of the first bucket body 11 and the bucket sidewall body 42 form the windward channel 54, and the outlet of the windward channel 54 is opened to the primary dust collecting cavity 52; the windward channel 54 is communicated with the barrel sidewall inlet 43, and the windward channel 54 is used for forming cyclone between the first bucket body 11 and the arc-shaped outer surface of the barrel sidewall body 42 to realize first-stage gas-dust separation, so that heavier or larger impurities are directly separated and sunk into a space outside the first bucket tail 12 and below the first radial skirt 13 and the windward channel 54, namely the lower space of the primary dust collecting cavity 52 before entering the first air passing hole 130. Secondly, the cyclone direction formed by the air forced by the second protruding wing 15 in the windward channel 54 is opposite to the cyclone direction formed by the air guided by the skirt-shaped air guiding blade 131 in the middle accommodating cavity 5, and the airflow in different flow directions can play a role in enhancing the separation of air and dust.

The second wind guide body 2 is detachably placed in the barrel content chamber 40, the axis of the second wind guide body 2 is approximately overlapped with or arranged in parallel with the axis of the first wind guide body 1, the second wind guide body 2 comprises a second main body 20, the second main body 20 also comprises a second bucket body 21 and a second bucket tail 22 connected below the second bucket body 21 in a roughly funnel shape, part of the second main body 20 is inserted into the first bucket body 11 and extends into the first bucket tail 12 even slightly, a first air guiding gap is formed between the second main body 20 and the first bucket body 11, the lower end of the second bucket tail 22 is closed, but a central air passing opening 23 communicated with a central channel 210 of the second bucket body 21 is arranged at a position between the second bucket body 21 and the second bucket tail 22 or on the side wall of the second bucket tail 22, and the central channel 210 forms a main air outlet channel of the air-dust separating device 400; the fine dust collecting chamber 51 is located not only at the lower portion of the inner receiving chamber 16, i.e. at the inner section of the first tail 12, but also in the space below the second tail 22. Thus, air flowing through the outside of the second bucket body 21 from top to bottom can enter the central passage 210 through the central air passing opening 23 without being pitched down into the fine dust collecting chamber 51 to agitate and lift dust particles collected in the fine dust collecting chamber 51. Even if a small amount of air is blown down into the fine dust collecting chamber 51 to lift up dust particles, the second bucket tail 22 with a closed lower end can block the lifted-up dust particles, and prevent the dust particles from being discharged into the central passage 210 along with the air in a large amount.

The second air guiding body 2 further includes a second radial skirt 24 protruding in the radial direction and provided on the second bucket body 21, and the second air guiding body 2 is inserted into the first air guiding body 1, so that the second radial skirt 24 is arranged above the first radial skirt 13. The annular screen 3 is arranged between the first radial skirt 13 and the second radial skirt 24 and is tightened by means of screws and studs 17, the studs 17 being provided on the first radial skirt 13. The combined use of the annular filter screen 3 and the stud 17 in turn positions the first wind guide body 1 and the second wind guide body 2. The annular screen 3, the first radial skirt 13, the second radial skirt 24 and the tub side wall 42 together form the intermediate receiving chamber 5, i.e., the intermediate receiving chamber 5 is provided between the annular screen 3 and the tub side wall 42. The first air passing holes 130 are communicated with the middle accommodating cavity 5, and the area of the air passing holes of the annular filter screen 3 is smaller than that of the first air passing holes 130; secondly, the annular filter screen 3 and the second body 21 have a second air guiding gap, and the second radial skirt 24 also serves to axially separate the barrel receiving cavity 40 and force air reaching the middle receiving cavity 5 above the first radial skirt 13 into the second air guiding gap and the first air guiding gap, and finally allow air to be discharged upwards from the central passage 210 of the second body 21, i.e. the main air outlet passage of the air-dust separating device 400, and therefore no air passing hole is formed in the second radial skirt 24. At the moment, the annular filter screen 3 is used for filtering smaller particle impurities to realize third-stage gas-dust separation. Further, a first mounting groove with an opening facing the second radial skirt edge 24 is formed in the first radial skirt edge 13, a second mounting groove with an opening facing the first radial skirt edge is formed in the second radial skirt edge 24, and the upper net edge and the lower net edge of the annular filter screen 3 are respectively arranged in the first mounting groove and the second mounting groove so as to stably mount the annular filter screen 3.

Furthermore, an air-guiding bucket body air-guiding blade 211 is disposed outside the second bucket body 21, an air-guiding bucket tail air-guiding blade 221 is disposed outside the second bucket tail 22, and a rotation diameter of a farthest outer end point of the upper bucket body air-guiding blade 211 is larger than a rotation diameter of a farthest outer end point of the lower bucket tail air-guiding blade 221 (the rotation diameter here is a mathematical concept, that is, it is assumed that rotation is not equal to that of the second air-guiding body 2 itself and rotation is required). The bucket body air guide blade 211 extends obliquely from top to bottom on the outer side surface of the second bucket body 21, and the windward side of the bucket body air guide blade 211 is perpendicular to the outer side surface of the second bucket body 21. The bucket tail air guide vane 221 arranged on the outer side of the second bucket tail 22 extends obliquely from top to bottom on the outer side surface of the second bucket tail 22, and the windward surface of the bucket tail air guide vane 221 is perpendicular to the outer side surface of the second bucket tail 22. The first air guiding gap and the second air guiding gap together form a secondary separation chamber 53, and the bucket body air guiding blade 211 is not only arranged in the first air guiding gap but also can be arranged in the second air guiding gap in an extending manner. In this way, the second bucket body 21 and the second bucket tail 22 become a two-stage cyclone mechanism which is arranged up and down in the secondary separation chamber 53, and forms a rotating airflow under the guidance of the cyclone mechanism, and the upper cyclone mechanism makes the rotating direction of the air opposite to the rotating direction of the lower cyclone mechanism. The bucket body wind-guiding blade 211 is that the last stage cyclone mechanism is used for forming whirlwind and realizing fourth level gas-dust separation, the bucket tail wind-guiding blade 221 is that the inferior stage cyclone mechanism is used for forming whirlwind and realizing fifth level gas-dust separation. The windward surface of the bucket air guide blade 211 provided on the outer side of the second bucket 21 is perpendicular to the outer side surface of the second bucket 21, and is also perpendicular to the axis. The windward side of the bucket tail wind guide blade 221 disposed on the outer side of the second bucket tail 22 is perpendicular to the outer side surface of the second bucket tail 221, and is also perpendicular to the axis. The inclination angles of the bucket body air guiding blades 211 and the bucket tail air guiding blades 221 are the same, but the air guiding direction (i.e. windward direction) of the bucket body air guiding blades 211 is opposite to the air guiding direction of the bucket tail air guiding blades 221, so that the rotation direction of air by the bucket body air guiding blades 211 is opposite to the cyclone direction of air by the bucket tail air guiding blades 221; in another embodiment with the same wind guiding direction, the effect of air-dust separation is reduced. In the embodiment with opposite wind guiding directions, the rotation direction of the airflow flowing through the bucket body wind guiding blade 211 and the rotation direction of the airflow flowing through the bucket tail wind guiding blade 221 form reverse flowing cyclones, so that different flowing-direction airflows in different space sections can achieve a better air-dust separation effect, wherein the windward sides of the bucket tail wind guiding blades 221 are arranged in opposite directions, the cyclone guided by the bucket body wind guiding blade 211 can be well stabilized, the airflow entering the lower space of the first bucket body 11 and the fine dust collecting cavity 51 is relatively stabilized, fine dust can be collected, and the secondary flying of the collected fine dust can be greatly reduced to enter the central channel 210 along with the airflow to be discharged. Further, the second bucket tail 22 and the bucket tail wind-guiding vane 221 extend downward in the first bucket body 11 to a boundary position between the first bucket body 111 and the first beam body 112. In this way, the position of the beam opening can be used to further reduce the downward blowing of air into the lower space of the fine dust collecting chamber 51 to agitate the collected fine dust.

Further, the air guide direction of the body air guide blades 211 is opposite to the air guide direction of the skirt air guide blades 131, so that the rotation direction of the air flow passing through the body air guide blades 211 is opposite to the direction of the cyclone formed by the air flow passing through the skirt air guide blades 131 in the middle housing chamber 5.

A filter cloth assembly 6 is further arranged above the outlet of the central channel 210, and the filter cloth assembly 6 comprises a corrugated filter cloth and a frame for fixing the filter cloth, wherein the filter cloth is used for filtering fine particles in the air. The filter cloth assembly 6 is used for filtering fine particles in air to realize the sixth-level gas-dust separation. Further, an upper annular rim 241 extending upward in the axial direction is provided on the second radial skirt 24, the filter cloth assembly 6 is disposed in the space defined by the upper annular rim 241, and the outlet of the central passage 210 is located in the inner region defined by the upper annular rim 241. The upper annular rim 241 is further provided with a positioning spigot 242, and the positioning spigot 242 serves as a jacking device for jacking up the filter cloth assembly 6. The filter cloth assembly 6 is arranged in the space defined by the upper annular rim 241 and placed on the positioning seam allowance 242, and the positioning seam allowance 242 is used for forming the diffusion gap H. The diffusion gap H is located between the lower surface of the filter cloth assembly 6 and the outlet of the central passage 210, and serves to uniformly diffuse the air coming out of the outlet of the central passage 210 to the entire lower surface of the filter cloth assembly 6, thereby not only improving the filtering efficiency but also reducing the wind resistance. Of course, in other embodiments, the jacking device 242 may also be a jacking cylinder or a jacking frame body disposed on the second radial skirt 24 and extending in the axial direction.

As shown in fig. 11 to 13, the power device 700 includes a power unit outer casing 7, a driving motor, a fan blade and a power unit air duct 71 accommodated in the power unit outer casing 7, wherein the fan blade is used for providing an outflow power for the air in the power unit air duct 71, an outlet of the central passage 210 is communicated with the power unit air duct 71, and the air sucked out from the central passage 210 passes through the filter cloth assembly 6 and then enters the power unit air duct 71. The axis of the power portion air duct 71 is substantially parallel to the axis of the central passage 210, but the air outlet direction of the power portion air duct 71 is arranged along a radial direction substantially perpendicular to the axis of the power portion air duct 71 or the central passage 210, that is, the air outlet direction of the power portion air duct 71 is substantially perpendicular to the axis of the power portion air duct 71, so that the air sucked out from the power portion air duct 71 does not directly face users, and the users are prevented from being injured by wind and dust.

The hand-held device 800 comprises an air transition connection 82, the transition duct 81 is arranged in the air transition connection 82 and the front end of the connecting duct 200 is connected to the air transition connection 82, the air transition connection 82 is located at the side of the air-dust separating device 400. The air transition connecting portion 82 is provided with a U-shaped cavity 820 with a U-shaped cross section, the U-shaped cavity 820 is provided with an open portion 821 facing the air-dust separating device 400, an embedded air guide box 83 is arranged in the U-shaped cavity 820, an inner cavity 830 of the embedded air guide box 83 forms part of the transition channel 81, the embedded air guide box 83 is provided with an air guide inlet 833 and an air guide outlet 832, the air guide inlet 833 is communicated with the connecting pipeline 200, the air guide outlet 832 is arranged on a box top wall 831 of the embedded air guide box 83, and the box top wall 831 is covered on the open portion 821 so that the air guide outlet 832 is communicated with the barrel side wall inlet 43. A sealing silicone 85 is provided between the tub side wall inlet 43 and the wind guide outlet 832 to prevent air leakage and to facilitate installation of the main housing 4. And valve plates 84 are further arranged in the embedded air guide box 83, and the valve plates 84 are used for preventing dust in the air-dust separation device from flowing back to the connecting pipeline. When the driving motor works, the valve plate 84 can be opened when air enters the inner cavity 830 of the embedded air guide box 83 from the connecting pipeline 200, and when the driving motor stops working, the valve plate 84 is in a closed state.

The hand-held device 800 further comprises a hand-held portion 86, the hand-held portion 86 is used for being held by a human hand, a button 861 for controlling the driving motor is detachably mounted on the hand-held portion 86, and a control wire connected with the button 861 is accommodated in the cavity 860 of the hand-held portion 86.

The hand-held device 800 further comprises a power receiving portion 87 arranged in front of and behind the grip portion 86, the power receiving portion 87 is connected with the grip portion 86 and the air transition connecting portion 82, the power receiving portion 87 is provided with a pair of electrodes, namely a pair of positive and negative electrodes, and a power supply component 871 is detachably connected with the pair of electrodes of the power receiving portion 87. The power receiving part 87 is in the shape of an open barrel cavity (i.e. a magazine) and protrudes from the air transition connection part 82 to extend outwards, and the power component 871 is inserted into the power receiving part 87 in the shape of a cartridge and locked. Specifically, as shown in fig. 14 and 15, the power supply module 871 includes a battery storage chamber 8711 having an opening portion and a battery chamber cover 8712 covering the opening portion, a positioning box 8715 is mounted on an inner side wall of the battery chamber cover 8712, a movable locking member 8713 movable in the left and right directions and a return spring 8714 pressed between the movable locking member 8713 and the positioning box 8715 are mounted in the positioning box 8715, and a positioning stopper 87111 is provided on the power supply receiving portion 87; the movable locking member 8713 can be latched to the positioning stopper 87111 through the cavity side wall of the battery storage cavity 8711 to lock the power supply component 871 in the power supply receiving portion 87. A control window 87120 is formed in the battery cavity cover 8712, a control handle 87131 is formed in the movable locking piece 8713, the control handle 87131 is exposed in the control window 87120, and the control handle 87131 is used for controlling the movement of the movable locking piece 8713. According to the technical scheme, the movable locking piece 8713 can be driven by the control handle 87131 to move to be separated from the positioning stop 87111, and the power supply component 871 is detached from the power supply receiving part 87. This not only facilitates the mounting of the power supply unit 871 but also makes it safe to use the power supply receiving portion 87 itself as a handle for one of the hand grips. One dry battery or a battery pack consisting of a plurality of dry batteries can be arranged in the battery storage cavity 8711. Next, the power receiving unit 87 further houses a charging circuit (not shown), and the counter electrode is electrically connected to an output port of the charging circuit.

The front end of the main housing 4 of the gas-dust separating device 400 is clamped on the air transition connecting part 82, and the rear end is clamped on the power part outer housing 7. Of course, in other embodiments, the main housing 4 of the gas-dust separating device 400 may also be screwed or clamped to the outer housing of the power unit.

The power receiving portion 87 and the air transition connecting portion 82 are integrally formed into a first fused body, the holding portion 86 and the power unit outer casing 7 are integrally formed into a second fused body, and the first fused body and the second fused body are of a detachable connection structure, that is, the two bodies are of separate independent component structures and can be connected together in a clamping manner and the like to form the hand-held device 800 as a whole. An illumination lamp (not shown) is also provided on the hand-held device 800, and is a spotlight having an outlet facing the dust pick-up unit 300. The illumination lamp can be rotated on the hand-held device 800 so that the orientation of the illumination lamp can be flexibly adjusted when the vacuum cleaner is used, and the user can be helped to pre-judge the lower cleaning point. Secondly can with the light sets up to the plug-in type, and will the light-emitting color of light sets up to the change type, and different users can change the light of different light colors in a flexible way so that achromatopsia, the use of weak personnel of look.

The multistage gas-dust separation method comprises the following steps: a first step of arranging a windward channel 54 in the upper space of the primary dust collecting chamber 52, making air firstly enter the windward channel 54 from the air inlet 43 and then enter the primary dust collecting chamber 52, guiding the air by means of the windward channel 54 to form a rotating wind in one direction and enter the upper space in the primary dust collecting chamber 52, and making the air firstly throw away heavier or larger impurities and deposit to the lower space of the primary dust collecting chamber to realize a first stage of air-dust separation when rotating and moving in the primary dust collecting chamber 52; secondly, allowing air to pass through the first air passing holes 130 and then continuously moving into the middle accommodating cavity 5, and further filtering out heavier or larger impurities and depositing the impurities in the lower space of the primary dust collecting cavity 52 by using the opportunity of passing through the first air passing holes 130 to realize secondary air-dust separation; thirdly, allowing air to pass through the annular filter screen 3 arranged between the middle containing cavity 5 and the secondary separating cavity 53 and then continuously moving into the secondary separating cavity 53, further filtering out smaller impurities by using the chance of passing through the annular filter screen 3 and depositing the smaller impurities to the bottom of the middle containing cavity 5 to realize third-stage gas-dust separation, and containing the filtered smaller impurities by using the middle containing cavity 5; secondly, when the air inlet is stopped, shaking the main shell 4 can also at least allow part of small impurities deposited at the bottom of the middle accommodating cavity 5 to pass through the first air passing hole 130 and then fall into the primary dust collecting cavity 52; fourthly, the air entering the secondary separation chamber 53 continues to advance in a rotating manner, and the air is further thrown off fine dust during the rotating movement and is deposited to the bottom of the secondary separation chamber 53, namely the fine dust collection chamber 51, so that gas-dust separation is realized; fifth, the air in the secondary separation chamber 53 is allowed to escape from the central passage 210. Therefore, dust can be effectively separated from air, dust accumulated on the filter cloth assembly 6 is reduced, and the service life of the filter cloth assembly 6 is effectively prolonged. Further, the central passage 210 extends into the secondary separation chamber 53, and air enters the central passage 210 from the middle or lower portion of the secondary separation chamber 53.

Claims

1. The air-dust separation device comprises a main shell, a first air guide body, a second air guide body and an annular filter screen, wherein the main shell is in a barrel shape with an upper opening and is provided with a barrel bottom wall body, a barrel side wall body and a barrel inner cavity enclosed by the barrel bottom wall body and the barrel side wall body, and the first air guide body, the second air guide body and the annular filter screen are arranged in the barrel inner cavity; it is characterized in that the device comprises a five-level gas-dust separation structure, wherein:

2. The gas-dust separating device of claim 1, wherein a filter cloth assembly is further arranged above the central channel outlet and is used for filtering fine particles in air to realize sixth-stage gas-dust separation.

3. A gas-dust separating apparatus according to claim 2, wherein an upper rim extending upwardly in the axial direction is further provided on the second radial skirt, the filter cloth assembly being arranged in a space defined by the upper rim.

4. A gas-dust separating apparatus according to claim 2, wherein a diffusion gap is reserved between the lower surface of the filter cloth assembly and the outlet of the central passage, and the diffusion gap is used for uniformly diffusing the air coming out of the outlet of the central passage to the whole lower surface of the filter cloth assembly so as to improve the filtering efficiency and reduce the wind resistance.

5. A gas-dust separating apparatus according to claim 4, wherein a jacking means is further provided on the second radial skirt, the filter cloth assembly being placed on the jacking means, the jacking means being arranged to form the diffusion gap; the jacking device is a jacking cylinder which is arranged on the second radial skirt edge and extends along the axial direction, or an upper annular edge which extends upwards along the axial direction is further arranged on the second radial skirt edge, the filter cloth component is arranged in a space defined by the upper annular edge, and the jacking device is a positioning spigot arranged on the upper annular edge.

6. The gas-dust separating device of any one of claims 1 to 5, wherein the first radial skirt is configured into a wind passing region provided with a first wind passing hole and a closed region not provided with the first wind passing hole, the wind facing channel is provided below the closed region of the first radial skirt, the wind facing channel includes a first projecting fin and a second projecting fin which are provided on the outer surface of the first wind guide body and project in the radial direction, the first projecting fin and the second projecting fin are arranged in an L shape, the first projecting fin and the first radial skirt are arranged substantially parallel to each other, the second projecting fin and the first radial skirt are arranged substantially perpendicular to each other, one end of the second projecting fin is connected to the first radial skirt, and the other end of the second projecting fin is connected to the first projecting fin; the first protruding wing piece, the second protruding wing piece, the closed area of the first radial skirt edge, the outer wall of the first main body and the barrel side wall body are combined to form the windward channel; the air inlet is arranged on the barrel side wall to form a barrel side wall inlet which is communicated with the windward channel.

7. A gas-dust separating device according to any one of claims 1 to 5, wherein the first main body of the first wind guide body is substantially funnel-shaped and comprises a first bucket body and a first bucket tail connected to the lower side of the first bucket body, and the first radial skirt is arranged on the first bucket body; first fill tail downwardly extending butt receive thereby the branch of thin dirt collection chamber, elementary dirt collection chamber is put in the interior, the exterior space of first fill tail, thereby the bucket bottom wall body can be in with the conversion mode swing joint of open mode or closed condition open can let when leading to the bottom wall body respectively the rubbish that accumulates pours out in the thin dirt collection chamber, the elementary dirt collection chamber.

8. The gas-dust separating device of claim 7, wherein the bottom wall of the barrel is provided with a central garbage outlet, the first bucket tail extends downwards to abut against the central garbage outlet, and the central garbage outlet is provided with a hole plug; the central garbage outlet is used for discharging garbage in the fine dust collecting cavity in the first bucket tail.

9. A gas-dust separating device according to any one of claims 1 to 5, wherein the first radial skirt is provided with inclined skirt wind guide blades, air gaps are formed between the front and rear adjacent skirt wind guide blades and form the first air passing holes, axial projections of the front and rear adjacent skirt wind guide blades are at least partially overlapped, and the skirt wind guide blades are used for forming cyclone by air entering the intermediate receiving cavity through the first air passing holes so as to enhance the third stage gas-dust separation and reduce dust from being adhered to the annular filter screen.

10. The air-dust separating apparatus of claim 9, wherein the skirt air guide vanes and the windward passage are arranged in opposite directions, so that the windward passage rotates in an upper portion of the primary dust collecting chamber in an opposite direction to a cyclone direction in which the skirt air guide vanes rotate in the intermediate receiving chamber.

11. The air-dust separating apparatus of claim 9, wherein the air guide directions of the body air guide vanes and the skirt air guide vanes are arranged in opposite directions, and the rotation direction of the body air guide vanes in the air guide gap is opposite to the cyclone direction of the skirt air guide vanes in the intermediate housing chamber.

12. The gas-dust separating device of any one of claims 1 to 5, wherein the bucket body wind-guiding blades extend obliquely from top to bottom on the outer side surface of the second bucket body, and the windward side of the bucket body wind-guiding blades is perpendicular to the outer side surface of the second bucket body; the bucket tail air guide blade extends on the outer side surface of the second bucket tail in an inclined mode from top to bottom, and the windward side of the bucket tail air guide blade is perpendicular to the outer side surface of the second bucket tail.

13. A gas-dust separating device according to any one of claims 1 to 5, wherein the first main body of the first wind guide body is substantially funnel-shaped and comprises a first bucket body and a first bucket tail connected to the lower side of the first bucket body, and the first radial skirt is arranged on the first bucket body; first bucket body is including being cylindrical first bucket shape bucket body, connecting be the first beam shape bucket body that is binding off form below the first bucket shape bucket body, first fill tail connect be in below the first beam shape bucket body, first radial shirt rim setting is in the last position of following of first bucket shape bucket body.

14. The gas-dust separation device of claim 13, wherein the second bucket tail and the bucket tail wind-guiding vanes extend downward in the first bucket body to a position at the interface between the first bucket body and the first beam body.

15. A gas-dust separating device as claimed in any one of claims 1 to 5, wherein the diameter of rotation of the outermost point of the air guiding blade of the bucket body is greater than the diameter of rotation of the outermost point of the air guiding blade of the bucket tail.

16. A gas-dust separating device according to any one of claims 1 to 5, wherein a first mounting groove is provided on the first radial skirt opening towards the second radial skirt, a second mounting groove is provided on the second radial skirt opening towards the first radial skirt, and the upper and lower wire edges of the annular screen are arranged in the first mounting groove and the second mounting groove, respectively.

17. A vacuum cleaner using the air-dust separating apparatus of any one of claims 1 to 16, comprising a main body unit, a connecting duct and a dust pick-up unit, wherein the main body unit comprises a power device for generating suction power, the air-dust separating apparatus is communicated with the power device for separating dust in air, a duct chamber in the connecting duct is communicated with an air inlet of the air-dust separating apparatus at one end and is communicated with the dust pick-up unit at the other end, and the dust pick-up unit is used for picking up dust on a deposition surface by using the suction power and can provide the picked-up dust to the air-dust separating apparatus through the duct chamber in the connecting duct.

18. The vacuum cleaner of claim 17, wherein the main unit further comprises a hand-held device for holding by a user, the hand-held device being disposed at a side of the air-dust separating device, and the power unit, the air-dust separating device and the hand-held device being connected to each other as a unitary device.