CN107984400A - A kind of saw blade sandblasting air filtering purifier - Google Patents
A kind of saw blade sandblasting air filtering purifier Download PDFInfo
- Publication number
- CN107984400A CN107984400A CN201810052711.1A CN201810052711A CN107984400A CN 107984400 A CN107984400 A CN 107984400A CN 201810052711 A CN201810052711 A CN 201810052711A CN 107984400 A CN107984400 A CN 107984400A
- Authority
- CN
- China
- Prior art keywords
- dust
- air
- filtering
- storehouse
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 90
- 238000005488 sandblasting Methods 0.000 title claims abstract description 44
- 239000000428 dust Substances 0.000 claims abstract description 64
- 239000004576 sand Substances 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 6
- 238000004887 air purification Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 210000001367 artery Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/003—Removing abrasive powder out of the blasting machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A kind of saw blade sandblasting air filtering purifier of the present invention is related to technical field of air purification, including wind turbine（1）, one of dust air draught storehouse（16）, one of dust-filtering storehouse（3）, reground grain dirt wind chamber（13）, reground grain dirt filtering cabin（11）, pulse of air filter（4）, gas storage bag（17）, hopper（7）, dust separation storage bin（9）And dust collecting box（10）Design science of the present invention, rationally, it is novel, the technical solution filtered using reground grain dirt, by sand-blasting machine discharge sand feed powder dirt by filtering, separation and proportioning processing, again for sand-blasting machine reuse, at the same time, in closed space, pass through two filtration, purifications to the air containing dust, only discharge meets the air of environmental requirement, it is ensured that sand-blasting machine dust emission meets environmental protection standard.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to the air filtration of saw blade sand-blasting machine in operation of sandblasting are net
Change device.
Technical background
One of critical process in known saw blade production process is with sand-blasting machine that fine sand and ash is right by a certain percentage
Its saw blade surface carries out sandblasting operation, then carries out surface polishing, and sandblasting is that sand-blasting machine is rapidly sprayed dry sand stream with compressed air
To saw blade surface and dirt is removed, the burr of saw blade piece surface, oxide skin and cast(ing) surface can be removed by sandblasting
The impurity such as slag.The dust of sand-blasting machine discharge has a great influence air ambient, and cleaner used by the prior art, is in original
One common cleaner is installed on the sand-blasting machine come.If cleaner wind turbine wind-force is big, negative shadow is produced to sandblasting effect
Ring, if wind turbine wind-force is small, dust removing effects are bad.Moreover, this common cleaner, does not reach comparatively ideal environmental requirement.
To ensure that sandblasting quality is good, the ratio if necessary to the ash of sandblasting sand material, sand reaches 3:7, common cleaner can not aid in
Sand-blasting machine carries out the proportion adjustment of sand and ash, is unfavorable for the recycling and reuse of sandblasting sand material.
The content of the invention
Present invention aims at, for above-mentioned sand-blasting machine used by problem present on cleaner, there is provided one kind saw
Piece sandblasting air filtering purifier, including one of dust air draught storehouse, one of dust-filtering storehouse, reground grain dirt wind chamber, reground grain
Dirt filtering cabin and pulse of air filter, two filtration, purifications and dust are carried out again to the air of dust in saw blade sandblasting procedures
Utilize, reach the requirement of environment-protecting clean.
The technical scheme is that be addressed in the following manner：A kind of saw blade sandblasting air filtering purifier,
Including wind turbine, one of dust air draught storehouse, one of dust-filtering storehouse, reground grain dirt wind chamber, reground grain dirt filtering cabin, pulse of air
Filter, gas storage bag, hopper, it is characterised in that：One of dust-filtering storehouse is equipped with discharge sand feed powder dirt import, is fixed on machine
On frame, one of dust-filtering storehouse top is fixed in one of dust air draught storehouse, and the pulse of air filter is installed on together
On dust-filtering storehouse, it filters air outlet slit and connects one of dust air draught storehouse, and one of dust air draught storehouse is equipped with wind turbine inlet air
Mouthful, connected with wind turbine, one of dust air draught storehouse is in addition to air ports are filtered, and all sealing, the hopper are fixed on one
Road dust-filtering storehouse lower part, upper opening dust-filtering storehouse together with connect, and lower part, which is equipped with, inhales sand mouth, the reground grain dirt filtering
Storehouse is fixed in rack, it is equipped with reground grain dirt filtering inlet air mouth, is connected by pipeline with the fan outlet of wind turbine, described two
Road dust wind chamber is equipped with reground grain dirt filtering air outlet, it is fixed on reground grain dirt filtering cabin top, the pulse of air mistake
Filter is installed on reground grain dirt filtering cabin, it filters air outlet slit connection reground grain dirt wind chamber, the reground grain dirt filtering
Storehouse is in addition to air ports are filtered, and all sealing, its upper part are equipped with opening, and the pulse of air filter is equipped with air inlet pipe, institute
State air inlet pipe one end and be equipped with ash cleaning jet nozzle, the gas storage bag is connected by impulse electromagnetic valve with the air inlet pipe other end.
A kind of sand-blasting machine air filtering purifier, is additionally provided with dust separation storage bin, it is fixed on one of dust
Filtering cabin lower part, upper opening dust-filtering storehouse together with connect, and the dust separation storage bin upper opening, which is equipped with, adjusts door.
A kind of sand-blasting machine air filtering purifier, is additionally provided with dust collecting box, it is located at reground grain dirt filtering cabin
Lower part.
The present invention, design science, reasonable, novel, the technical solution filtered using reground grain dirt, by sand-blasting machine discharge sand material
Dust is handled by filtering, separation and proportioning, again for sand-blasting machine reuse, meanwhile, in closed space to the sky containing dust
Gas passes through two filtration, purifications, and only discharge meets the air of environmental requirement, it is ensured that sand-blasting machine dust emission meets environmental protection standard.
Brief description of the drawings
Fig. 1 is saw blade sandblasting air filtering purifier structure diagram of the present invention.
In figure：1- wind turbines；2- fan outlets；One of dust-filtering storehouse of 3-；4- pulse of air filters；5- deashings spray
Mouth；6- discharges sand feed powder dirt import；7- hoppers；8- inhales sand mouth；9- dust separation storage bins；10- dust collecting boxes；11- bis-
Dust-filtering storehouse；12- reground grain dirt filtering inlet air mouths；13- reground grain dirt wind chambers；14- reground grains dirt filters air outlet；15-
Air inlet pipe；One of dust air draught storehouse of 16-；17- gas storage bags；18- impulse electromagnetic valves；19- air inlets；20- dust separations into
Mouthful；21- adjusts door.
Embodiment
Shown in Figure 1, saw blade sandblasting air filtering purifier of the present invention, sand-blasting machine discharge sand feed powder dirt is all returned
Receive, through filtering, separate and proportioning handle, again for sand-blasting machine reuse, meanwhile, in closed space, to the sky containing dust
Gas passes through two filtration, purifications, and only discharge meets the air of environmental requirement, it include wind turbine 1, one of dust air draught storehouse 16, one
Dust-filtering storehouse 3, reground grain dirt wind chamber 13, reground grain dirt filtering cabin 11, pulse of air filter 4, gas storage bag 17, hopper 7,
Dust separation storage bin 9 and dust collecting box 10.One of dust-filtering storehouse 3 is equipped with discharge sand feed powder dirt import 6, with sandblasting
Machine sand feed powder dirt floss hole connects, and is fixed in rack, one of dust air draught storehouse 16 is fixed on one of dust-filtering storehouse 3
Portion, the pulse of air filter 4 is the commercially available universal product, and on one of dust-filtering storehouse 3, filter cylinder is in one of dust mistake
In filter position 3, it filters air outlet slit and only connects one of dust air draught storehouse 16, one of dust air draught storehouse 16 be additionally provided with wind turbine into
Air port 19, connects with wind turbine 1, and the air outlet slit and wind turbine inlet air of pulse of air filter 4 are removed in one of dust air draught storehouse 16
Mouth 19 was waited outside air filtering import and export, all sealing, formed a closed warehouse.The hopper 7 is in bell shape, Gu
Due to one of dust-filtering storehouse, 3 lower part, upper opening dust-filtering storehouse 3 together with connects, and is formed by filtering, separation and proportioning
Sand material and dust reuse entrance are handled, lower part, which is equipped with, inhales sand mouth 8 and sand-blasting machine sand material inlet communication, by inhaling sand mouth 8 to sandblasting
Machine provides return sand material.The dust separation storage bin 9 also is secured to one of dust-filtering storehouse, 3 lower part, and upper opening is together with
Dust-filtering storehouse 3 connects, and forms dust separation entrance, and 9 upper opening of dust separation storage bin, which is equipped with, adjusts door 21, described
The size of dust separation import 20 can be adjusted by adjusting door 21.The reground grain dirt filtering cabin 11 is fixed in rack, it is equipped with
Reground grain dirt filtering inlet air mouth 12, passes through sealing pipeline（It is not drawn into attached drawing）Connected with the fan outlet 2 of wind turbine 1, it is described
Reground grain dirt wind chamber 13, which is equipped with, is used for the reground grain dirt filtering air outlet 14 for discharging purification air, it is fixed on reground grain dirt mistake
11 top of filter position, the pulse of air filter 4 are installed on reground grain dirt filtering cabin 11, and filter cylinder is in reground grain dirt filtering cabin 11
Interior, it filters air outlet slit and only connects reground grain dirt wind chamber 13, and the dust collecting box 10 is fixed to be filtered positioned at reground grain dirt
The lower part in storehouse 11, its upper part are equipped with horn opening, and the reground grain dirt filtering cabin 11 removes 12 He of reground grain dirt filtering inlet air mouth
The air outlet slit of pulse of air filter 4 was waited outside air filtering import and export, all sealing, formed a closed warehouse.It is described
Pulse of air filter 4 is equipped with air inlet pipe 15, and described 15 one end of air inlet pipe is equipped with ash cleaning jet nozzle 5, and the gas storage bag 17 passes through arteries and veins
Solenoid valve 18 is rushed to be connected with 15 other end of air inlet pipe.
During present invention work, by the air inlet 19 of centrifugal blower 1, through one of dust air draught storehouse 16, then pass through arteries and veins
Air filter 4 is rushed, then sand feed powder dirt import 6 is discharged through one of dust-filtering storehouse 3, from the sand of sand-blasting machine suction sand-blasting machine discharge
Feed powder dirt and air, since one of dust-filtering storehouse 3 is also the warehouse of a closing, will not leak dust air, by together
Half pure air of 3 pulse of air filter of dust-filtering storehouse, 4 one of filtering, the wind turbine 1 connected from one of dust air draught storehouse 16
Fan outlet 2, by pipeline and reground grain dirt filtering inlet air mouth 12, blow into reground grain dirt filtering cabin 11, it is empty through extra pulse
The purification air that air filter 4 two filters, then pure air is discharged by reground grain dirt filtering air outlet 14.Sucked from sand-blasting machine
The sand feed powder dirt and air of sand-blasting machine discharge, wherein heavier sand material is fallen into hopper 7 by 7 horn mouth of hopper, by pulse electricity
Magnet valve 18 controls, and by gas storage bag 17, air is sprayed through air inlet pipe 15, by pulse air filter 4 in one of dust-filtering storehouse 3
The dust of filter cylinder attachment is blown off, and falls into hopper 7 and dust separation storage bin 9, the sand material for falling into the dust of hopper 7 and having fallen into mixes
It is combined, return sand material is provided to sand-blasting machine through inhaling sand mouth 8.Dust separation import 20 only need to be adjusted by adjusting door 21
Size, you can control falls into the ratio of 9 Dust Capacity of hopper 7 and dust separation storage bin, makes to fall into the dust and sand material in hopper 7
For 3:7 ratios.Equally, controlled by impulse electromagnetic valve 18, by gas storage bag 17, compressed air, Jiang Erdao are blown into through air inlet pipe 15
The dust that 4 filter cylinder of pulse air filter adheres in dust-filtering storehouse 11 is blown off, and falls into set dust collecting box 10.The powder
Dirt separates the dust in storage bin 9 and dust collecting box 10, can concentrate discharge by the dust-exhausting port opened up.In the present embodiment,
One of dust-filtering storehouse 3 and reground grain dirt filtering cabin 11 can install multiple pulse of air filters 4, one of dust-filtering storehouse
The selection 10um filter cores of 3 pulse of air filter 4, the selection 0.5um of the pulse of air filter 4 of reground grain dirt filtering cabin 11
Filter core.
In addition to the above, the present invention can also have other embodiment.It is every to use equivalent substitution or equivalent transformation shape
Into technical solution, belong to the protection domains of application claims.
Claims (3)
1. a kind of saw blade sandblasting air filtering purifier, including wind turbine（1）, one of dust air draught storehouse（16）, one of dust-filtering
Storehouse（3）, reground grain dirt wind chamber（13）, reground grain dirt filtering cabin（11）, pulse of air filter（4）, gas storage bag（17）, hopper
（7）, it is characterised in that：One of dust-filtering storehouse（3）Equipped with discharge sand feed powder dirt import（6）, it is fixed in rack, it is described
One of dust air draught storehouse（16）It is fixed on one of dust-filtering storehouse（3）Top, the pulse of air filter（4）Installed in together
Dust-filtering storehouse（3）On, it filters air outlet slit and connects one of dust air draught storehouse（16）, one of dust air draught storehouse（16）If
There is air inlet（19）, with wind turbine（1）Connection, one of dust air draught storehouse（16）In addition to air ports are filtered, all
Sealing, the hopper（7）It is fixed on one of dust-filtering storehouse（3）Lower part, upper opening dust-filtering storehouse together with（3）Connection,
Lower part, which is equipped with, inhales sand mouth（8）, the reground grain dirt filtering cabin（11）It is fixed in rack, it is equipped with reground grain dirt filtering inlet air mouth
（12）, pass through pipeline and wind turbine（1）Fan outlet（2）Connection, the reground grain dirt wind chamber（13）Equipped with reground grain dirt
Filter air outlet（14）, it is fixed on reground grain dirt filtering cabin（11）Top, the pulse of air filter（4）Installed in two
Dust-filtering storehouse（11）On, it filters air outlet slit connection reground grain dirt wind chamber（13）, the reground grain dirt filtering cabin（11）
In addition to air ports are filtered, all sealing, its upper part are equipped with opening, the pulse of air filter（4）Equipped with air inlet pipe
（15）, the air inlet pipe（15）One end is equipped with ash cleaning jet nozzle（5）, the gas storage bag（17）Pass through impulse electromagnetic valve（18）With air inlet
Pipe（15）The other end connects.
A kind of 2. saw blade sandblasting air filtering purifier according to claim 1, it is characterised in that：It is additionally provided with dust separation
Storage bin（9）, it is fixed on one of dust-filtering storehouse（3）Lower part, upper opening dust-filtering storehouse together with（3）Connection, it is described
Dust separation storage bin（9）Upper opening, which is equipped with, adjusts door（21）.
A kind of 3. saw blade sandblasting air filtering purifier according to claim 1, it is characterised in that：It is additionally provided with dust collection
Case（10）, it is located at reground grain dirt filtering cabin（11）Lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052711.1A CN107984400A (en) | 2018-01-19 | 2018-01-19 | A kind of saw blade sandblasting air filtering purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052711.1A CN107984400A (en) | 2018-01-19 | 2018-01-19 | A kind of saw blade sandblasting air filtering purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107984400A true CN107984400A (en) | 2018-05-04 |
Family
ID=62040276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810052711.1A Pending CN107984400A (en) | 2018-01-19 | 2018-01-19 | A kind of saw blade sandblasting air filtering purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107984400A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057223A (en) * | 1990-06-14 | 1991-12-25 | 中国科学院金属研究所 | Sand blasting machine with sand blasting reflux device |
| DE10144724A1 (en) * | 2001-09-11 | 2003-03-27 | Liqui Filter Gmbh | Disposal of metal shavings and fines generated during metal machining process, comprises filtering lightweight fines and collecting heavy fines with shavings |
| CN202479138U (en) * | 2012-03-06 | 2012-10-10 | 廖晖 | Sand-dust separator |
| CN202700810U (en) * | 2012-05-28 | 2013-01-30 | 国家粮食储备局成都粮食储藏科学研究所 | Blow type winnowing apparatus |
| CN203060985U (en) * | 2012-12-28 | 2013-07-17 | 安徽泰格生物技术股份有限公司 | Subdepot cycle-operation-type pulse dust remover |
| CN104400669A (en) * | 2014-11-20 | 2015-03-11 | 盐城市丰特铸造机械有限公司 | Dust removing device for stone shot blasting |
| CN204621834U (en) * | 2015-04-14 | 2015-09-09 | 中国建筑第八工程局有限公司 | A kind of even application dedusting sandblasting machine |
| CN204768047U (en) * | 2015-05-14 | 2015-11-18 | 仪征正乾机械有限公司 | Strain a dust remover |
| CN205097048U (en) * | 2015-11-17 | 2016-03-23 | 重庆明治百通机械制造有限公司 | Sandblast room is done to artifical sand formula of returning |
| CN207746916U (en) * | 2018-01-19 | 2018-08-21 | 丹阳市技星液压机械有限公司 | A kind of saw blade sandblasting air filtering purifier |
-
2018
- 2018-01-19 CN CN201810052711.1A patent/CN107984400A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057223A (en) * | 1990-06-14 | 1991-12-25 | 中国科学院金属研究所 | Sand blasting machine with sand blasting reflux device |
| DE10144724A1 (en) * | 2001-09-11 | 2003-03-27 | Liqui Filter Gmbh | Disposal of metal shavings and fines generated during metal machining process, comprises filtering lightweight fines and collecting heavy fines with shavings |
| CN202479138U (en) * | 2012-03-06 | 2012-10-10 | 廖晖 | Sand-dust separator |
| CN202700810U (en) * | 2012-05-28 | 2013-01-30 | 国家粮食储备局成都粮食储藏科学研究所 | Blow type winnowing apparatus |
| CN203060985U (en) * | 2012-12-28 | 2013-07-17 | 安徽泰格生物技术股份有限公司 | Subdepot cycle-operation-type pulse dust remover |
| CN104400669A (en) * | 2014-11-20 | 2015-03-11 | 盐城市丰特铸造机械有限公司 | Dust removing device for stone shot blasting |
| CN204621834U (en) * | 2015-04-14 | 2015-09-09 | 中国建筑第八工程局有限公司 | A kind of even application dedusting sandblasting machine |
| CN204768047U (en) * | 2015-05-14 | 2015-11-18 | 仪征正乾机械有限公司 | Strain a dust remover |
| CN205097048U (en) * | 2015-11-17 | 2016-03-23 | 重庆明治百通机械制造有限公司 | Sandblast room is done to artifical sand formula of returning |
| CN207746916U (en) * | 2018-01-19 | 2018-08-21 | 丹阳市技星液压机械有限公司 | A kind of saw blade sandblasting air filtering purifier |
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