CN108273328A - A kind of filter drum type precipitator and dust collecting process - Google Patents
A kind of filter drum type precipitator and dust collecting process Download PDFInfo
- Publication number
- CN108273328A CN108273328A CN201710010282.7A CN201710010282A CN108273328A CN 108273328 A CN108273328 A CN 108273328A CN 201710010282 A CN201710010282 A CN 201710010282A CN 108273328 A CN108273328 A CN 108273328A
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- Prior art keywords
- filter
- drum type
- filter cylinder
- type precipitator
- worm
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- 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.)
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- 239000012716 precipitator Substances 0.000 title claims abstract description 45
- 239000000428 dust Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008569 process Effects 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 8
- 241000237858 Gastropoda Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
-
- 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
- B01D46/71—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 with pressurised gas, e.g. pulsed air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A kind of filter drum type precipitator of present invention offer and dust collecting process, filter drum type precipitator include：Babinet, babinet is interior to be divided into filter chamber and air-purifying chamber by card；Filter cylinder, main part are arranged in the filter chamber, and one end enters across the card in air-purifying chamber, and there is worm-gear toothing, the filter cylinder to be connect with the card rotary seal at this end；Worm screw is meshed with the worm-gear toothing, and the power of rotation is provided for the worm-gear toothing；Deashing mechanism is connected with the filter cylinder.The filter drum type precipitator of the present invention further improves the cleaning efficiency and dust removing effects of filter drum type precipitator, extends the service life of filter cylinder.
Description
Technical field
The present invention relates to a kind of filter drum type precipitators, and the invention further relates to dust collecting process, belong to air purification field.
Background technology
With the sustained and rapid development of China's industrial sector, all kinds of dust and suspended particulate substance that are generated in production process at
The most important pollution sources polluted for indoor and outdoor air and factory floor.The suspension dust of high concentration is to cause air visibility
Decline main factor, and if certain suspension dust be easier to chemically react under optimum conditions, it is inflammable and explosive,
The life and production safety of the people are seriously threatened, and leads to the root of the occupational diseases such as pneumoconiosis.Since nearly half a century, by
Increasingly increase in the demand of such as traffic, the energy etc. in people, caused by air pollution problems inherent sharp deterioration.It is especially close
Year over shroud the whole nation using PM2.5 as the haze weather of leading factor, so that people is paid attention to environmental protection further, dedusting recognized
Intellectual also generally improves, and related functional department has also formulated more stringent atmosphere pollutants emission standards, to make dedusting
Technology has obtained continuing to develop, and possesses vast potential for future development.
Different according to dust catching principle, currently used cleaner mainly has mechanical dust collector, electric precipitator, filtering
Deduster and scrubber.Wherein filter collector makes dust-contained airflow pass through filtrate by grit separation and collection, divides self-filtering
With surface filtration two ways, efficiency of dust collection is generally 90%~99%.Filter drum type precipitator is also a kind of filter collector,
Operation principle is mainly that dusty gas enters dust collector box body interior air-flow section sudden enlargement, a part of particle grain size in air-flow
Larger dust directly drops in ash bucket under the action of gravity and inertia force, without cartridge filter；Remaining fine size, density are small
Dust go to filter cylinder with air-flow, under the influence of cloth youth diffusion and the combined effects such as sieving, be blocked in outside filter cylinder by filtrate,
Clean gas to discharge pipe from being discharged in filter cylinder under the action of wind turbine, and dust accumulation shifts after falling into ash bucket, to reach the mesh of dedusting
's.
Filter drum type precipitator can be divided into vertical and horizontal two categories, Horizontal filtration drum formula deduster according to filter cylinder arrangement mode
Filter cylinder be disposed with it is horizontally disposed and be in tilted layout two kinds of forms.However, no matter which kind of arrangement, no matter upper air inlet or under
, there is filter cylinder upper face fouling phenomenon in air inlet.The dust stratification of filter cylinder upper face is after deashing, due to the effect of gravity, also
It can be deposited in filter cylinder uper side surface, the filtration of such filter cylinder this part of upper face in actual filtration increases with regard to very little
Add the resistance of filter drum type precipitator, reduces efficiency of dust collection.
Invention content
The purpose of the present invention is to provide a kind of filter drum type precipitator and dust collecting process, to solve the above problems.
Present invention employs following technical solutions：
A kind of filter drum type precipitator, which is characterized in that including：Babinet is divided into filter chamber and net in babinet by card
Gas chamber；Filter cylinder, main part are arranged in the filter chamber, and one end enters across the card in air-purifying chamber, this end has snail
Wheel gear, the filter cylinder are connect with the card rotary seal；Worm screw is meshed with the worm-gear toothing, is the worm-gear toothing
Wheel provides the power of rotation；Deashing mechanism is connected with the filter cylinder.
Further, filter drum type precipitator of the invention can also have the feature that：Wherein, the filter cylinder includes：Gold
Belong to frame；And it is sleeved on the pleat shape filtrate of the metal framework periphery.
Further, filter drum type precipitator of the invention can also have the feature that：The axis of the worm screw with it is described
The axis of worm-gear toothing is vertical.
Further, filter drum type precipitator of the invention can also have the feature that：Wherein, the deashing mechanism packet
It includes：Pulse-control system and sequentially connected injection tube, induction nozzle and Venturi tube.
Further, filter drum type precipitator of the invention can also have the feature that, also have：Handle, with the snail
Bar is fixedly connected.
Further, filter drum type precipitator of the invention can also have the feature that：Also have：Ash bucket is arranged in institute
It states below babinet, ash bucket outer wall is not less than 60 ° with horizontal direction angle, and ash bucket lower part is provided with unloading valve.
Further, filter drum type precipitator of the invention can also have the feature that：Wherein, it is set in the filter chamber
It is equipped with air inlet, there is air outlet in the air-purifying chamber.
Further, filter drum type precipitator of the invention can also have the feature that, also have：Airflow uniform distribution plate, if
It sets in the lower end of the air inlet.
The present invention also provides a kind of dust collecting process, are dusted using the filter drum type precipitator described in above-mentioned any one,
It is characterised in that it includes following steps：
Dust removal step：It will wait for that the gas of dedusting is input to from air inlet in filter drum type precipitator with wind turbine, filtered through filter cylinder
Afterwards, clean gas is discharged from gas outlet；
Deashing step：When the dirt accumulation on filter cylinder carries out deashing when the efficiency of dust collection of filter drum type precipitator being caused to decline
Step, it is specific as follows：Pulse-control system controls the keying of pulse valve, and compressed air is sprayed by the induction nozzle in injection tube
The injection air-flow for going out one high speed and high pressure, through venturi shaped at the more uniform blast pass of pressure ratio, into filter cylinder in make filter cylinder
Inside there is moment positive pressure and generate expansion and fine motion, makes the dust releasing for being deposited on filter cylinder surface, into ash bucket；
The step of rotating filter cylinder：When carrying out deashing step to filter cylinder, periodic rotary worm drives filter cylinder rotation 90
~180 °.
Advantageous effect of the invention
Compared with prior art, a kind of filter drum type precipitator provided by the invention and technique, the structure of filter drum type precipitator
Rationally, by the way that deashing mechanism in existing filter drum type precipitator is improved and is optimized, not only so that ash-removal effect is carried
It rises, and without increasing blast pass pressure, reduces production cost；Meanwhile further extending the service life of filter cylinder.Separately
On the one hand the comprehensive performance and the market competitiveness of enhancing filter drum type precipitator are more advantageous to.
In addition, the transmission ratio of worm gearing is big, compact-sized, accounting space is small.When filter drum type precipitator is transformed
Do not change box volume, the filtering technique of filter drum type precipitator is had little effect.Worm gearing stable drive, noise
Small, worm tooth is continuously screw thread rack, progresses into engagement and exits engagement.
Description of the drawings
Fig. 1 is the structural schematic diagram of filter drum type precipitator；
Fig. 2 is the enlarged drawing of worm gearing.
Fig. 3 is the axonometric drawing that worm screw connect with filter cylinder.
Specific implementation mode
Illustrate the specific implementation mode of the present invention below in conjunction with attached drawing.
As depicted in figs. 1 and 2, filter drum type precipitator includes：Babinet 1, filter cylinder 2, worm gearing 3, deashing mechanism and
Ash bucket 5.
Air inlet 6 is opened in the top of babinet 1, and air outlet 7 is opened in 1 lower part of babinet.
Airflow uniform distribution plate 8 is arranged in the lower section of air inlet 6.
It is equipped with card 9 in babinet 1, filter chamber 10 and air-purifying chamber 11 will be divided into inside babinet 1, air outlet 7 is opened in net gas
On room 11.
Filter cylinder 2 is mounted in filter chamber 10, and worm gearing 3 and deashing mechanism are mounted in air-purifying chamber 11.Such as Fig. 2 and
Shown in Fig. 3, worm gearing 3 is made of worm screw 31, screw thread rack 32, worm-gear toothing 33 and handle 34.
The arrangement of filter cylinder 2 is horizontal arrangement, by head cover 21, metal framework 22, pleat shape filtrate 23 and pedestal 24 4
It is grouped as；22 one end of metal framework of filter cylinder 2 connect with card 9 and stretches into air-purifying chamber 11, and the other end is exposed to filter across babinet 1
Outside cylinder type dust catcher.
Excellent sealing and there are relative motions between filter cylinder 2 and card 9 connects between filter cylinder 2 and card 9 for rotatory sealing
It connects.
The number of filter cylinder 2 is three in the present embodiment, and vertical direction is arranged successively.
As shown in Figures 2 and 3, worm gear teeth 33 is carved with or is welded in one end of the stretching of metal framework 22 card 9, as snail
The Worm-gear assembly of bar transmission mechanism 3.
Worm gearing 3, including worm screw 31 and worm-gear toothing 33.It is moved back and forth by the spiral of worm screw 31, while band
Dynamic multiple filter cylinders 2 rotate, and worm screw 31 is the elongate cylinder bar for being carved with screw thread rack 32, the metal of axis and worm gear, that is, filter cylinder 2
The axis of frame 22 is vertical, and babinet 1 is stretched out in 31 one end of worm screw, welds handle 34.
During deashing, when handle 34 rotates, worm screw 31 is rotationally advancing or retreats, and screw thread rack 32 is engaged with worm-gear toothing 33
So that the metal framework 22 of filter cylinder 2 rotates 90 degree, stopping handle 34 rotates for effect.At this time 2 upper surface of filter cylinder turn to side or
Below so that the dust stratification fallen again in 2 upper surface of filter cylinder after deashing drop to 10 lower part of filter chamber with rotation, is finally slipped to ash bucket
In 5, achieve the effect that 2 efficient deashing of filter cylinder.
Deashing mechanism is pulse jetting deashing mode, and pulse jetting deashing mechanism is mainly by pulse-control system 41, injection
Pipe 42, induction nozzle 43 and Venturi tube (not shown) composition.The effect of deashing mechanism is exactly reverse to blow into filter cylinder 2
Gas blows out the dust in filter cylinder 2.
Ash bucket 5 is below babinet 1, and 5 outer wall of ash bucket is not less than 60 ° with horizontal direction angle, and 5 lower part of ash bucket passes through unloading valve
System is set to be isolated from the outside.
The process being dusted using the filter drum type precipitator of present embodiment is as follows：
Dust removal step：The gas for waiting for dedusting is input to from air inlet 6 in filter drum type precipitator with wind turbine, it is equal by air-flow
The uniformly distributed effect of fabric swatch 8, after the filtering of filter cylinder 2, clean gas is discharged from gas outlet 7；
Deashing step：When the dirt accumulation on filter cylinder carries out deashing when the efficiency of dust collection of filter drum type precipitator being caused to decline
Step, it is specific as follows：Pulse-control system 41 controls the keying of pulse valve, and compressed air passes through the induction nozzle in injection tube 42
43 eject the injection air-flow of one high speed and high pressure, through venturi shaped at the more uniform blast pass of pressure ratio, into filter cylinder 2
Make to occur moment positive pressure in filter cylinder and generate expansion and fine motion, makes the dust releasing for being deposited on 2 surface of filter cylinder, into ash bucket 5；
The step of rotating filter cylinder：When carrying out deashing step to filter cylinder 2, periodic rotary worm drives filter cylinder 2 to rotate
90~180 °.
What said above is only one embodiment of the present invention.It should be noted that in the present aspect principle scope of application
Interior, the arbitrary improvements and modifications that those skilled in the art make also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of filter drum type precipitator, which is characterized in that including：
Babinet, babinet is interior to be divided into filter chamber and air-purifying chamber by card；
Filter cylinder, main part are arranged in the filter chamber, and one end enters across the card in air-purifying chamber, this end has worm gear
Gear, the filter cylinder are connect with the card rotary seal；
Worm screw is meshed with the worm-gear toothing, and the power of rotation is provided for the worm-gear toothing；
Deashing mechanism is connected with the filter cylinder.
2. filter drum type precipitator as described in claim 1, it is characterised in that：
Wherein, the filter cylinder includes：
Metal framework；And
It is sleeved on the pleat shape filtrate of the metal framework periphery.
3. filter drum type precipitator as described in claim 1, it is characterised in that：
The axis of the worm screw is vertical with the axis of the worm-gear toothing.
4. filter drum type precipitator as described in claim 1, it is characterised in that：
Wherein, the deashing mechanism includes：Pulse-control system and sequentially connected injection tube, induction nozzle and Wen
Pipe.
5. filter drum type precipitator as described in claim 1, which is characterized in that also have：
Handle is fixedly connected with the worm screw.
6. filter drum type precipitator as described in claim 1, which is characterized in that also have：
Ash bucket is arranged below the babinet, and ash bucket outer wall is not less than 60 ° with horizontal direction angle, and ash bucket lower part, which is provided with, unloads
Grey valve.
7. filter drum type precipitator as described in claim 1, it is characterised in that：
Wherein, it is provided with air inlet in the filter chamber, there is air outlet in the air-purifying chamber.
8. filter drum type precipitator as claimed in claim 7, which is characterized in that also have：
Airflow uniform distribution plate is arranged in the lower end of the air inlet.
9. a kind of dust collecting process is dusted using the filter drum type precipitator as described in any one of claim 1~8,
It is characterized in that, includes the following steps：
Dust removal step：It will wait for that the gas of dedusting is input to from air inlet in filter drum type precipitator with wind turbine, it is clean after filter cylinder filters
Net gas is discharged from gas outlet；
Deashing step：When the dirt accumulation on filter cylinder carries out deashing step when the efficiency of dust collection of filter drum type precipitator being caused to decline
Suddenly, specific as follows：Pulse-control system controls the keying of pulse valve, and compressed air is ejected by the induction nozzle in injection tube
The injection air-flow of one high speed and high pressure, through venturi shaped at the more uniform blast pass of pressure ratio, into filter cylinder in make in filter cylinder
There is moment positive pressure and generate expansion and fine motion, makes the dust releasing for being deposited on filter cylinder surface, into ash bucket；
The step of rotating filter cylinder：When carrying out deashing step to filter cylinder, periodic rotary worm, drive filter cylinder rotation 90~
180°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010282.7A CN108273328A (en) | 2017-01-06 | 2017-01-06 | A kind of filter drum type precipitator and dust collecting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010282.7A CN108273328A (en) | 2017-01-06 | 2017-01-06 | A kind of filter drum type precipitator and dust collecting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108273328A true CN108273328A (en) | 2018-07-13 |
Family
ID=62800939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010282.7A Pending CN108273328A (en) | 2017-01-06 | 2017-01-06 | A kind of filter drum type precipitator and dust collecting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108273328A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158385A (en) * | 2018-09-30 | 2019-01-08 | 西安长庆科技工程有限责任公司 | A kind of reverse cleaning plant of sandblasting dedusting filter cylinder |
| CN109939502A (en) * | 2019-04-17 | 2019-06-28 | 合肥合意环保科技工程有限公司 | A kind of rotatable side inserting type filter cartridge dust remover of filter cylinder |
| CN111482023A (en) * | 2020-04-16 | 2020-08-04 | 张家港市彰阳工业过滤器有限公司 | Counter-flow type filter cartridge dust remover |
| CN112206607A (en) * | 2020-09-21 | 2021-01-12 | 江苏人和环保设备有限公司 | Closed self-cleaning filter |
| CN113813715A (en) * | 2021-09-29 | 2021-12-21 | 邢台市天元星食品设备有限公司 | Combined rotary filter cylinder waste gas purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223008A (en) * | 1992-08-24 | 1993-06-29 | Flex-Kleen Corp. | Horizontally mounted filter cartridge dust collector |
| CN201558635U (en) * | 2009-11-16 | 2010-08-25 | 江阴市人和环保设备有限公司 | Air filter element |
| CN103432844A (en) * | 2013-09-12 | 2013-12-11 | 青岛沃尔德环保设备制造安装有限公司 | Assembled transverse multi-filter-cartridge dust collector |
| CN104383767A (en) * | 2014-11-19 | 2015-03-04 | 张家港市艾尔环保设备有限公司 | Efficient filter cartridge dust collector |
| CN205586696U (en) * | 2016-03-31 | 2016-09-21 | 陈聪 | High -efficient stifled dust collector that strains that prevents who makes fertilizer |
-
2017
- 2017-01-06 CN CN201710010282.7A patent/CN108273328A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223008A (en) * | 1992-08-24 | 1993-06-29 | Flex-Kleen Corp. | Horizontally mounted filter cartridge dust collector |
| CN201558635U (en) * | 2009-11-16 | 2010-08-25 | 江阴市人和环保设备有限公司 | Air filter element |
| CN103432844A (en) * | 2013-09-12 | 2013-12-11 | 青岛沃尔德环保设备制造安装有限公司 | Assembled transverse multi-filter-cartridge dust collector |
| CN104383767A (en) * | 2014-11-19 | 2015-03-04 | 张家港市艾尔环保设备有限公司 | Efficient filter cartridge dust collector |
| CN205586696U (en) * | 2016-03-31 | 2016-09-21 | 陈聪 | High -efficient stifled dust collector that strains that prevents who makes fertilizer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158385A (en) * | 2018-09-30 | 2019-01-08 | 西安长庆科技工程有限责任公司 | A kind of reverse cleaning plant of sandblasting dedusting filter cylinder |
| CN109939502A (en) * | 2019-04-17 | 2019-06-28 | 合肥合意环保科技工程有限公司 | A kind of rotatable side inserting type filter cartridge dust remover of filter cylinder |
| CN111482023A (en) * | 2020-04-16 | 2020-08-04 | 张家港市彰阳工业过滤器有限公司 | Counter-flow type filter cartridge dust remover |
| CN112206607A (en) * | 2020-09-21 | 2021-01-12 | 江苏人和环保设备有限公司 | Closed self-cleaning filter |
| CN113813715A (en) * | 2021-09-29 | 2021-12-21 | 邢台市天元星食品设备有限公司 | Combined rotary filter cylinder waste gas purification system |
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