CN102233326A - Micropowder removing device - Google Patents
Micropowder removing device Download PDFInfo
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- CN102233326A CN102233326A CN2011100895361A CN201110089536A CN102233326A CN 102233326 A CN102233326 A CN 102233326A CN 2011100895361 A CN2011100895361 A CN 2011100895361A CN 201110089536 A CN201110089536 A CN 201110089536A CN 102233326 A CN102233326 A CN 102233326A
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- filter
- micro mist
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- air
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Abstract
The invention provides a micropowder removing device capable of always removing micropowder in high efficiency. The micropowder removing device is provided with a cylindrical casing pipe (3), a cylindrical filter (4) disposed in the casing pipe (3), a flow inlet (10) making air (9) and resin materials (5) flow into the filter (4), and a flow outlet (12) making the air (9) and micropowder (110) flowing into the filter (4) flow out from between the casing pipe (3) and the filter (4) along a tangential direction; the filter (4) is located in a turbinate surface with the central line of the casing pipe (3) as the axis, the flow inlet (10) makes the resin materials (5) and the air (9) flow in from the lower part of the filter (4) along the tangential direction, via the air (9) inflowing from the flow inlet (10) along the tangential direction, and rotating upward along the inner surface of the turbinate filter (4) in the filter (4), spiral airflow (18) flowing from the lower part and the upper part is generated, only if the airflow (18) is provided, the resin materials (5) can be detained in the filter (4).
Description
Technical area
The present invention relates to the micro mist scavenge unit of powder body.
Background technology
Example as common micro mist scavenge unit can be illustrated with reference to Fig. 6.It is roughly concentric arrangement of central tube 111 and sleeve pipe 112, the powder body separation portion 101 that is inserted into filter tube 113 between them forms the cylindric of three-decker, be arranged at the powder body suction inlet 115 that is arranged on the cylindrical portion of cap 114 on top on the tangential direction, the air suction inlet 117 of tangential direction is set in the bottom of sleeve pipe 112 again, and gate 122 is arranged on the top of the retention basin 121 of bottom.Be connected in air by driving and attract mouthfuls 117 induced-draught fan, the end of the pipe that is connected with powder body suction inlet 115 sucks air and powder body.The mist that comprises the powder body that tangentially flows into from powder body suction inlet 115 enters from the top of powder body separation portion 101 and to flow to the below between central tube 111 and the filter tube 113.The micro mist that the powder body is come with following it is separated therebetween.The micro mist that separates passes through filtering holes with air, flows to the below between filter pipe 113 and sleeve pipe 112, attracts mouthful 117 discharges from air.The powder body that is eliminated micro mist is by filter hole, and in arranging into retention basin 121 from the lower ending opening of filter tube 113.
Patent documentation 1: the spy opens the 2009-273969 communique
Summary of the invention
Above-mentioned common micro mist scavenge unit, because the mixture of powder body and gas drops into from device top, therefore the limited time of powder body delay in installing for some powder bodies, exists owing to the not enough significantly reduced problem of efficient that makes the removing micro mist of the holdup time in device.
The invention solves the problem of above-mentioned existence, its purpose is to provide can set the holdup time of powder body in device arbitrarily, can guarantee to remove the holdup time of micro mist in device, can remove the micro mist scavenge unit of micro mist all the time expeditiously because of different powder bodies are required.
To achieve these goals, micro mist scavenge unit of the present invention, possesses the tubular sleeve pipe, be disposed at the cartridge filter in the described sleeve pipe, the conveying gas of powder body and described powder body are flowed into inflow entrance in the described filter, and the described conveying gas and the flow export of micro mist that make the described filter of inflow from tangentially flowing out between described sleeve pipe and the described filter, it is characterized in that, described filter bits is in the center line with described sleeve pipe is the rounding conical surface of axle, and described inflow entrance can make described powder body and described conveying gas tangentially flow into from described filter bottom.Adopt this structure, can be by means of the conveying air that tangentially flows into from inflow entrance, inner face rotation along obconic filter in filter produces from the bottom to the top airflow flowing, as long as there is this air-flow the powder body can be trapped in the filter.
If employing the present invention then can provide and can set the holdup time of powder body in device arbitrarily, can guarantee to remove the holdup time of micro mist in device because of different powder bodies are required, can remove the micro mist scavenge unit of micro mist all the time expeditiously.
In the present invention, when if filter is provided with the filter component with a plurality of filter holes at an upper portion thereof, then can not allow and carry gas to escape laterally from the bottom of filter, air blast takes place in filter, follows this air blast and the very big centrifugal force that produces can separate micro mist expeditiously on the top of filter.In this case, when the lower, outer perimeter that is attached to filter component is provided with the lid structure of tubular, because of more can allowing than the bottom, the top of filter component carry gas to escape laterally more, can stronger air-flow take place in filter, the bigger centrifugal action of following this air-flow to produce can more effectively carry out separating of powder body and micro mist in the top of filter component.
In the present invention, when additional streams outlet makes the structure of the conveying gas of inflow filter and micro mist outflow tangentially between the bottom of the bottom of sleeve pipe and filter, then can between sleeve pipe and filter, produce and rotate airflow flowing downwards, the conveying gas of inflow filter and micro mist are flowed out from the flow export of bottom.
In the present invention, when additional streams outlet makes the structure of the conveying gas of inflow filter and micro mist outflow tangentially between the top of the top of sleeve pipe and filter, then can between sleeve pipe and filter, produce and rotate airflow flowing upward, the conveying gas of inflow filter and micro mist are flowed out from the flow export on top.
Description of drawings
Fig. 1 is the side-looking key diagram of the embodiment 1 of the micro mist scavenge unit that the present invention relates to of expression.
Fig. 2 be the micro mist scavenge unit that the present invention relates to of expression embodiment 1 overlook key diagram.
Fig. 3 represents the user mode figure of the embodiment 1 of the micro mist scavenge unit that the present invention relates to.
Fig. 4 is the side-looking key diagram of the embodiment 2 of the micro mist scavenge unit that the present invention relates to of expression.
Fig. 5 is the side-looking key diagram of the embodiment 3 of the micro mist scavenge unit that the present invention relates to of expression.
Fig. 6 is the side-looking key diagram of common micro mist scavenge unit one example of expression.
Symbol description
3 sleeve pipes
4 filters
The 4a filter component
5 resin materials (powder body)
8 filter holes
9 air (conveying gas)
10 inflow entrances
11 micro mists
12 flow exports
The 12a flow export
20 lids
The specific embodiment
Below with embodiment the example of the micro mist scavenge unit that the present invention relates to is described with reference to the accompanying drawings.
Fig. 1 is the side-looking key diagram of the embodiment 1 of the micro mist scavenge unit that the present invention relates to of expression,
Fig. 2 be the micro mist scavenge unit that the present invention relates to of expression embodiment 1 overlook key diagram.As
Shown in Fig. 1,2, the micro mist scavenge unit of embodiment 1, loam cake 1 has sealed upper opening, the cylindrical sleeve 3 interior filters 4 that dispose tubulars that lower openings is sealed by base plate 2, the center line that filter 4 is arranged in the direction of principal axis of sleeve pipe 3 (above-below direction of Fig. 1 paper) is the rounding conical surface of axle, and it is trapezoidal to form inverted cone, and upper opening is sealed by loam cake 1, the bottom is run through base plate 2 and is passed at the downside of sleeve pipe 3, forms the outlet 6 of powder body 5 in lower openings.Be provided with on outlet 6 with fulcrum 7a is the regulator (damper) 7 of fulcrum rotatable (switching).
Again, the cylindrical portion of sleeve pipe 3 and filter 4 with the rectangular plane of its axis on be divided into up and down two parts, the top of the filter 4 in the last cylindrical portion 3a of sleeve pipe 3 is made of punch metal plate or wire netting, formation has the filter component 4a of a plurality of filter holes 8, bottom than the filter 4 in the short following cylindrical portion 3b of the last cylindrical portion 3a of sleeve pipe 3 is made of the metallic plate that does not have aeration, forms non-filter part 4b.
Again, non-filter part 4b, the outside at following cylindrical portion 3b is run through in the non-filter part 4b of this time cylindrical portion 3b, the conveying gas 9 of powder body 5 and the inflow entrance 10 that this powder body 5 tangentially flows into short pipe arrangement shape are set, at following cylindrical portion 3b, but conveying gas 9 and micro mist 11 that the filter hole 8 of the inflow filter 4a of portion is set form from descending the annulus between cylindrical portion 3b and the non-filter part 4b, thereby are able to flow in the outside that the height and position near base plate 2 is provided with downward cylindrical portion 3b the flow export 12 of the short pipe arrangement shape of tangential direction.
Fig. 3 relates to the user mode of the embodiment 1 of micro mist scavenge unit of the present invention for expression.As shown in Figure 3, for remove when the resin forming because of form bad produce comprise resin material (resin particle), or carry the micro mist and the foreign matter of generation in the operation etc. at the aspiration-type pipeline till make-up machine, the micro mist scavenge unit of embodiment 1 is set on the top of the resin material feeding hopper 14 of make-up machine 13, and outlet 6 is opened on resin material feeding hopper 14 between regulator 7.Inflow entrance 10 joins by pipe arrangement and storagetank 15 as the resin material 5 of powder body, flow export 12 by pipe arrangement with join as the supply gas kinergety or the suction inlet of induced-draught fan 16 that improves the fluid apparatus of pressure.Has dust collect plant 17 between flow export 12 and the induced-draught fan 16.
Action to the micro mist scavenge unit of embodiment 1 describes below.
In storagetank 15, do not put under the situation of resin material 5, in case drive induced-draught fan 16, air in the annulus between following cylindrical portion 3b and the non-filter part 4b just tangentially flows out from flow export 12, annulus between following cylindrical portion 3b and the non-filter part 4b flows into the air in the annulus of going up between cylindrical portion 3a and the filter part 4a, the air of the inside of filter part 4a flows into the annulus of going up between cylindrical portion 3a and the filter part 4a from filter hole 8, the inside of the air inflow filter 4a of portion of non-filter part 4b inside, regulator 7 is free and open, the air of resin material feeding hopper 14 inside flows into the inside of non-filter part 4b from the outlet of opening 6, storagetank 15 inside and outside air enter inflow entrance 10 simultaneously, but because of when air begins to flow into outlet 6, close regulator 7 by this air-flow, outlet 6 also is closed thereupon, and storagetank 15 inside and outside air can only tangentially flow into the inside of non-filter part 4b from inflow entrance 10.
By means of from inflow entrance 10 leaked-in air tangentially, inside at filter 4, generation forms the upwards spiral air flow 18 (spiral shown in Fig. 1 solid line) that flows to top from the bottom along the rotation of turbination filter 4 inner faces, annulus between sleeve pipe 3 and filter 4 produces the downward spiral air flow 19 (spiral shown in Fig. 1 dotted line) that rotation flows downward, and the driving that these spiral air flows 18,19 are maintained to induced-draught fan 16 stops.
Therefore, resin material 5 is being put under the situation of storagetank 15, pipeline through aspiration-type is carried (air conveying), resin material 5 tangentially flows into from inflow entrance 10 with inside and outside air (the conveying air) 9 of storagetank 15, the upwards spiral air flow 18 that produces because of the inside of filter 4, the resin material 5 that tangentially flows into air 9 from inflow entrance 10 is by means of the spiral air flow 18 that makes progress, inside at filter 4 is mobile to top from the bottom while rotating along the inner face of turbination filter 4, as long as spiral air flow 18 is arranged, that is to say, before induced-draught fan 16 stopped to drive, resin material 5 just was trapped in the filter 4.
At this moment, by means of centrifugal force, resin material 5, can with wherein comprise or before entering make-up machine 13 in the aspiration-type pipeline is carried operation etc. the micro mist 11 of generation separate with foreign matter.Pass through filter hole 8 than filter hole 8 little micro mist 11 and foreign matters with the air 9 of going up the annulus between cylindrical portion 3a and the filter part 4a from the inside inflow of filter part 4a, and downward spiral air flow 19 interflow that produce in the annulus between sleeve pipe 3 and the filter 4, flow downward while rotating, tangentially flow out from flow export 12 with air 9.That is to say outside device and discharge.The micro mist 11 and the foreign matter that comprise in the air 9 of discharging outside device are reclaimed by dust collect plant 17, discharge clean air 9 through the outlet of induced-draught fan 16 to atmosphere.
Then, when suitably setting time (removing the time of required different micro mist 11 and foreign matter according to resin material 5) of being trapped in the device according to resin material 5 after the past, because induced-draught fan 16 stops to drive, spiral air flow 18,19 in the inside and outside generation of filter 4 promptly disappears, therefore utilize spiral air flow 18 upwards that its resin material 5 of forcing to be detained in filter 4 is fallen because of its deadweight, meanwhile regulator 7 is also opened.Therefore, micro mist 11 and the foreign matter as target is discharged from mouthful 6 outflows by the clean resin material 5 after disposing expeditiously.That is to say that resin material 5 is discharged to the outer resin material feeding hopper 14 of device, dropped into make-up machine 13 then.Therefore, when resin forming, can effectively suppress micro mist 11 and foreign matter and sneak into resin material 5 and cause the moulding condition of poor to take place.
As mentioned above, in the micro mist scavenge unit of embodiment 1, it is the rounding conical surface of axle that filter 4 is positioned at the center line of sleeve pipe 3, inflow entrance 10 utilizes the structure that resin material 5 and air 9 are tangentially flowed into from the bottom of filter 4, by means of from inflow entrance 10 tangentially leaked-in air 9 in filter 4, produce along turbination filter 4 inner faces the upwards spiral air flow 18 that flows to top from the bottom while rotating, as long as this spiral air flow 18 exists, resin material 5 just can be detained in filter 4, therefore can set the time that resin material 5 is detained arbitrarily in device, guarantee to remove the time of required different micro mist 11 and foreign matter, be able to remove expeditiously all the time micro mist 11 and foreign matter according to resin material 5.
Again, filter 4 is arranged at the structure on top by means of the filter component 4a that will have many filter holes 8, air 9 can not escaped laterally from filter 4 bottoms, strong upwards spiral air flow 18 can take place in filter 4, the powerful centrifugal action of following this air-flow and producing is isolated micro mist 11 and foreign matter expeditiously on the top of filter 4.
Fig. 4 is the side-looking key diagram that expression relates to the embodiment 2 of micro mist scavenge unit of the present invention.As shown in Figure 4, the micro mist scavenge unit of embodiment 2 covers 20 this point except the lower, outer perimeter at filter part 4a is provided with tubular, also have the 26S Proteasome Structure and Function identical, the part identical with the micro mist scavenge unit of embodiment 1 is marked with identical symbol with the micro mist scavenge unit of embodiment 1.
In the dust scavenge unit of embodiment 2, there is the bottom of covering 20 filter part 4a to compare with the outside, it is more not cover the air of 20 top escaping laterally, therefore the stronger spiral air flow that makes progress 18 can take place in filter 4, follow this air-flow, play the top of the filter 4 of greater role at centrifugal force and can more effectively carry out separating of micro mist 11 and foreign matter.
Herein, do not cover air 9, micro mist 41 and the foreign matter on top of 20 filter part 4a and downward spiral air flow 19 interflow that produce in the outside of the upper outside of filter part 4a, the outside of lid 20, non-filter part 4b by the outside, tangentially flow out from flow export 12.Again, the bottom of covering 20 filter part 4a is arranged in the outside, also have air 9, micro mist 11 and foreign matter pass through, flow into cover 20 and filter part 4a between annulus, also can produce downward spiral air flow herein, therefore the bottom by filter part 4a flow into cover 20 and filter part 4a between the air 9 of annulus, micro mist 11 and foreign matter, with the downward spiral air flow interflow that produces herein, flow out from downward cylindrical portion 3b in gap between the lower end of covering 20 lower end and filter part 4a and the annulus between the non-filter part 4b, with downward spiral air flow 19 interflow that produce herein, tangentially flow out from flowing out 12.
Also have, lid 20 is provided with filter part 4a is parallel in Fig. 4, but tiltable be arranged so that cover 20 and filter part 4a between the gap in lid 20 lower end than big in the upper end, or be obliquely installed to very close to each other in the upper end of lid 20, or be set to parallel cylindric, and make in the upper end of lid 20 very close to each other with the last cylindrical portion 3a in the outside.
Fig. 5 is the side-looking key diagram that expression relates to the embodiment 3 of micro mist scavenge unit of the present invention.At embodiment 1, in 2 the micro mist scavenge unit, bottom for sleeve pipe 3, flow export 12 is set on tangential direction, make air 9 by filter 4, micro mist 11 and foreign matter can tangentially flow out between the bottom (non-filter part 4b) of the bottom (following cylindrical portion 3b) of sleeve pipe 3 and filter 4, relatively, as shown in Figure 5, in the micro mist scavenge unit of embodiment 3, top for sleeve pipe 3, topmost preferably, on tangential direction, be provided with and flow out 12a, make air 9 by filter 4, micro mist 11 and foreign matter are from the top of sleeve pipe 3, the top of topmost (go up cylindrical portion 3a topmost) and filter 4 preferably, preferably tangentially flow out between the topmost (topmost of filter part 4a), this point and embodiment 1,2 have a great difference, and lid 20 this point that tubular is set in the lower, outer perimeter of filter part 4a are identical with the micro mist scavenge unit of embodiment 2.
Again, for the top for sleeve pipe 3 is provided with flow export 12a on tangential direction, sleeve pipe 3 has than the big last cylindrical portion 3a of following cylindrical portion 3b diameter and clogs the last cylindrical portion 30a of this different-diameter and the circular segment difference plate 30c of section difference face between the following cylindrical portion 30b, and the annulus between the top of the top of sleeve pipe 3 and filter 4 can be expanded to radial outside.
Again, lid 20 upper end be arranged on flow export 12a under will cover the 20a of blade of a sword portion on the 20 outside ring-types of sealing with the gap of last cylindrical portion 30a, the following blade of a sword 20b of portion of the ring-type that itself and the gap between the lower end (upper end of non-filter part 4b) of filter part 4a are sealed is set in lid 20 lower end, top at sleeve pipe 3, preferably topmost forms the ring-type outflow space 30 with the flow export 12a on tangential direction, and the top of the annulus that will seal in the bottom between lid 20 and the filter part 4a and outflow space 30 are connected simultaneously.
In the micro mist scavenge unit of example 3, the air 9, micro mist 11 and the foreign matter that do not cover the top of 20 filter part 4a by the outside flow directly into outflow space 30, and with the gyration airflow 19a interflow that produces herein, 12a tangentially flows out from flow export.Again, the outside has the bottom of covering 20 filter part 4a also to have air 9, micro mist 11 and foreign matter to pass through, flow into cover 20 and filter part 4a between annulus, but owing to produce spiral air flow upwards herein, so bottom by filter part 4a, flow into cover 20 with filter part 4a between air 9, micro mist 11 and the foreign matter of annulus and the spiral air flow that makes progress of generation herein collaborate, inflow and outflow space 30, with the swirling eddy 19a interflow that produces herein, 12a tangentially flows out from flow export.
Also have, the micro mist scavenge unit of embodiment 3 has structure, the function identical with the micro mist scavenge unit of embodiment 1,2, and the part identical with the micro mist scavenge unit of embodiment 1,2 is marked with identical symbol.Again, also can make the diameter of following cylindrical portion 3b of sleeve pipe 3 consistent, the section of existence difference plate 30c with the diameter of last cylindrical portion 30a.
In this example, the micro mist scavenge unit of carrying with the aspiration-type pipeline that is applicable to well-known powder body describes the present invention, but the invention is not restricted to this, can implement with various forms in the scope that does not break away from its main idea.For example, the pressure sending type pipeline that goes for well-known powder body is carried, and also going for nitrogen or carbon dioxide is the scavenge unit of carrying the pipeline conveying of gas.Again, in this example, use a kind of powder body is carried out the pipeline conveying, the device of removing micro mist describes the present invention, and carries but go for that also multiple powder body is carried out pipeline, mixes simultaneously, removes the device of micro mist.
Claims (5)
1. micro mist scavenge unit, possess the tubular sleeve pipe, be disposed at cartridge filter in the described sleeve pipe, the conveying gas of powder body and described powder body are flowed into the inflow entrance in the described filter and make the described conveying gas that flows into described filter and micro mist from the flow export of outflow tangentially between described sleeve pipe and the described filter, it is characterized in that
Described filter bits in the center line with described sleeve pipe is the rounding conical surface of axle,
Described inflow entrance can make described powder body and described conveying gas tangentially flow into from described filter bottom.
2. micro mist scavenge unit according to claim 1 is characterized in that filter is provided with the filter component with a plurality of filter holes at an upper portion thereof.
3. micro mist scavenge unit according to claim 2 is characterized in that, the lid of tubular is set in the lower, outer perimeter of filter component.
4. according to any one the described micro mist scavenge unit in the claim 1～3, it is characterized in that flow export tangentially flows out the conveying gas of inflow filter and micro mist between the bottom of the bottom of sleeve pipe and filter.
5. according to any one the described micro mist scavenge unit in the claim 1～3, it is characterized in that flow export tangentially flows out the conveying gas of inflow filter and micro mist between the top of the top of sleeve pipe and filter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010090124A JP5401392B2 (en) | 2010-04-09 | 2010-04-09 | Fine powder removal device |
| JP2010-090124 | 2010-04-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102233326A true CN102233326A (en) | 2011-11-09 |
| CN102233326B CN102233326B (en) | 2015-05-20 |
Family
ID=44884725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110089536.1A Active CN102233326B (en) | 2010-04-09 | 2011-04-01 | Micropowder removing device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5401392B2 (en) |
| CN (1) | CN102233326B (en) |
| TW (1) | TWI539503B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553731A (en) * | 2010-10-12 | 2012-07-11 | 株式会社川田 | Micro powder removing device |
| US10959587B2 (en) | 2018-08-06 | 2021-03-30 | Techtronic Floor Care Technology Limited | Vacuum cleaner |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107922628B (en) | 2015-08-12 | 2021-07-30 | 宇部兴产株式会社 | Resin particle group, resin film, spacer, sorting device, and sorting method |
| JP6784421B1 (en) * | 2019-07-18 | 2020-11-11 | 株式会社セイホー | Foreign matter sorter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113929A (en) * | 1996-10-15 | 1998-05-06 | Kawata Mfg Co Ltd | Hopper |
| JP2007050354A (en) * | 2005-08-18 | 2007-03-01 | Sangyo Kiden Kk | Powder extraction apparatus |
| JP2007216116A (en) * | 2006-02-15 | 2007-08-30 | Ayagawa Bankin Kosakusho:Kk | Method and apparatus for removing fine particle from granular material |
| JP2010042379A (en) * | 2008-08-18 | 2010-02-25 | Teijin Chem Ltd | Cyclone type airflow application separation device and quantitative method of cut wastes using the same |
-
2010
- 2010-04-09 JP JP2010090124A patent/JP5401392B2/en active Active
-
2011
- 2011-04-01 CN CN201110089536.1A patent/CN102233326B/en active Active
- 2011-04-01 TW TW100111546A patent/TWI539503B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113929A (en) * | 1996-10-15 | 1998-05-06 | Kawata Mfg Co Ltd | Hopper |
| JP2007050354A (en) * | 2005-08-18 | 2007-03-01 | Sangyo Kiden Kk | Powder extraction apparatus |
| JP2007216116A (en) * | 2006-02-15 | 2007-08-30 | Ayagawa Bankin Kosakusho:Kk | Method and apparatus for removing fine particle from granular material |
| JP2010042379A (en) * | 2008-08-18 | 2010-02-25 | Teijin Chem Ltd | Cyclone type airflow application separation device and quantitative method of cut wastes using the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553731A (en) * | 2010-10-12 | 2012-07-11 | 株式会社川田 | Micro powder removing device |
| CN102553731B (en) * | 2010-10-12 | 2017-07-25 | 株式会社川田 | Micro mist removal device |
| US10959587B2 (en) | 2018-08-06 | 2021-03-30 | Techtronic Floor Care Technology Limited | Vacuum cleaner |
| US11627852B2 (en) | 2018-08-06 | 2023-04-18 | Techtronic Floor Care Technology Limited | Vacuum cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011218292A (en) | 2011-11-04 |
| CN102233326B (en) | 2015-05-20 |
| JP5401392B2 (en) | 2014-01-29 |
| TWI539503B (en) | 2016-06-21 |
| TW201145371A (en) | 2011-12-16 |
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