CN107096309B - A kind of filtering cartridge combined dust-remover - Google Patents
A kind of filtering cartridge combined dust-remover Download PDFInfo
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- CN107096309B CN107096309B CN201710516513.1A CN201710516513A CN107096309B CN 107096309 B CN107096309 B CN 107096309B CN 201710516513 A CN201710516513 A CN 201710516513A CN 107096309 B CN107096309 B CN 107096309B
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- dust
- cage
- extraction unit
- shell
- collection device
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Classifications
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- 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
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
-
- 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
- B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
- B01D46/0056—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation with rotational movement
-
- 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
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- 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
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
- B01D2267/30—Same type of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
- B01D2267/60—Vertical arrangement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2277/00—Filters specially adapted for separating dispersed particles from gases or vapours characterised by the position of the filter in relation to the gas stream
- B01D2277/20—Inclined, i.e. forming an angle of between 0° and 90°
-
- 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)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to environmental protection appliance fields, a kind of filtering cartridge combined dust-remover, including shell, dust-extraction unit, collection device, energy supply device, controller and suction formula fan, the shell is drum-shape, inlet channel and exhaust passage are provided on shell, suction formula fan is provided in exhaust passage, suction formula fan is for extracting purified gas out, dust-extraction unit is used to remove the dust in gas, dust-extraction unit can clear up the dust on dust-extraction unit automatically, dust-extraction unit can be rotated under the action of air-flow, the collection device is used to collect the dust that storage dust-extraction unit generates, collection device, which can shake the dust of collection, to be compacted, energy supply of the energy supply device for invention, the present invention is for reducing the discharge amount of dust in industrial production.
Description
Technical field
The present invention relates to field of environment protection equipment, specifically a kind of filtering cartridge combined dust-remover.
Background technique
In order to reduce the discharge amount of dust in industrial production, environment protection, people are controlled using various dust-extraction units
Pollution of the particulate matter of discharge of pollutant sources processed to atmosphere.According to dust removal mechanism difference, deduster is divided into the weight using particle itself
Various expansion chambers, all kinds of cyclone dust collectors of power dedusting；Utilize water to the various wet scrubbers of dedusting；Utilize various filter materials
Material carrys out the filtration dust catcher of dedusting；Using high-pressure electrostatic field force come the various high-voltage electrostatic dust separators of dedusting；And existing mistake
There are some problems for filter formula deduster, for example the gas filtration containing dust is insufficient, and some dust can be attached to filtering material
On, and then will affect the effect of filtering.
Traditional filter cartridge dust remover is there are two types of purge mode, one is high pressure draught blowback, one is injecting pulse air flow,
Practice have shown that the former the advantages of is that air-flow is uniform, the disadvantage is that air consumption is big；The advantages of the latter is that air consumption is small, the disadvantage is that air-flow is weak
It is small.In traditional filter cartridge dust remover course of work, filter core is needed to be replaced frequently, and cannot clear up filter core automatically in use
In dust, the service life of filter core is relatively short, and it is full that the dust in ash cellar is easy to product, needs frequently to carry out ash cellar clear
Reason.
In consideration of it, the present invention proposes that one kind can clear up filter core automatically and reduce a kind of filter assemblies of ash cellar clearing times
Formula deduster, specifically has the beneficial effect that:
1. a kind of filtering cartridge combined dust-remover of the present invention, the present invention is provided with shell, dust-extraction unit, collects dress
It sets, energy supply device, controller and be pumped into formula fan, be provided with inlet channel and exhaust passage on shell, in exhaust passage
It is provided with suction formula fan, is pumped into formula fan for extracting purified gas out, dust-extraction unit is used to remove the ash in gas
Dirt, dust-extraction unit can clear up the dust on dust-extraction unit automatically, and dust-extraction unit can be rotated under the action of air-flow, described
Collection device is used to collect the dust that storage dust-extraction unit generates, and collection device can shake consolidation to the dust of collection.
2. a kind of filtering cartridge combined dust-remover of the present invention, the dust-extraction unit includes cage, filter core, dedusting wind
Fan, end cap and bearing block, cage left end are mounted on shell by end cap seal, the cage by bearing block, dust extraction fan
Filter core rotation is driven by cage, falls the dust of part cartridge surface automatically, cage is connect with air pump, is provided on cage
Air flue clears up filter core from air flue blowout air-flow, realizes the clearing function of filter core.
3. a kind of filtering cartridge combined dust-remover of the present invention, the collection device are connected with cage, pass through cage
Rotation realize the automatic consolidation of dust in collection device, the storage capacity of ash cellar can be improved.
4. a kind of filtering cartridge combined dust-remover of the present invention, the present invention by dust extraction fan, cage, collection device and
Suction formula fan cooperates with each other, and realizes on filter core the automatic consolidation of ash cellar in the cleaning and ash cellar of dust jointly
Function has filter core cleaning effect good, the feature more than dust storage ash.
Summary of the invention
In order to make up for the deficiencies of the prior art, the present invention provides a kind of filtering cartridge combined dust-remover, the present invention lead to shell,
Dust-extraction unit, collection device, energy supply device, controller and suction formula fan cooperate with each other common realize to gas
Dust separation function, the dust-extraction unit can rotate automatically and self-purging, and the collection device can be to collection storage
Dust vibration ramming.
The technical solution adopted by the present invention to solve the technical problems is: a kind of filtering cartridge combined dust-remover, including shell,
Dust-extraction unit, collection device are pumped into formula fan and controller, are provided with inlet channel and exhaust passage on the shell, are vented
It is provided with suction formula fan in channel, is pumped into formula fan and is used to extract out purified gas, the dust-extraction unit slant setting
In shell, enclosure interior is placed with multiple dust-extraction units, and dust-extraction unit is used to remove the dust in gas, and dust-extraction unit can be certainly
Dust on dynamic cleaning dust-extraction unit, dust-extraction unit can be rotated under the action of air-flow, and the collection device is for receiving
The dust that collection storage dust-extraction unit generates, collection device can shake consolidation to the dust of collection.When the invention works, gas
Enter from the inlet channel of shell, dust-extraction unit is dusted the gas of inflow, and collection device is to the dust-extraction unit course of work
The dust of middle generation is collected storage, and collection device makes to collect the automatic consolidation of dust stored, purification by way of vibration
Gas afterwards flows out under the action of being pumped into formula fan from the exhaust passage of shell.
As one embodiment of the present invention, the dust-extraction unit includes cage, filter core, dust extraction fan and end cap,
The cage is mounted on shell by bearing rotary, and cage relative level is in tilted layout, and the center of cage is equipped with air flue,
Air pump is connected to by pipeline with air flue, and cage is provided with stomata along its length；The filter core is set in the outside of cage；It is described
Dust extraction fan is mounted on cage and is located at the gas outlet of filter core；The end carries out close for the non-outlet side to filter core
Envelope.When the invention works, dust extraction fan drives filter core rotation, the dust for being adsorbed on cartridge surface is fallen automatically；The cage
It is connect with air pump, air flue is provided on cage, filter core is cleared up from air flue blowout air-flow, realizes the cleaning function of filter core
Energy.
As one embodiment of the present invention, the collection device includes vibrating disk, ball, drawstring, ash bucket, sealing ring
And ash cellar, the vibrating disk are disc-shaped structure, vibrating disk is mounted on cage and rotates with cage, and the both ends of the surface of vibrating disk are set
It is equipped with round flange, is provided with rolling tooth on the inside of round flange；The ball is stuck on round flange, and ball is with vibrating disk
It rotates and shakes up and down；Described drawstring one end is connect with ball, and the other end of drawstring is connected with ash cellar；The ash bucket passes through bolt
It is fixed below shell；The ash cellar is located at below ash bucket, is tightly connected between ash cellar and ash bucket by sealing ring elasticity.When this
When invention work, vibrating disk is rotated with cage, and ball rolls in vibrating disc gear hobbing with the rotation of cage, because of ash cellar and ball
It is linked together by drawstring, so that the dust in ash cellar be made to shake consolidation, reduces the clearing times of ash cellar.
The beneficial effects of the present invention are:
1. a kind of filtering cartridge combined dust-remover of the present invention, the present invention is provided with shell, dust-extraction unit, collects dress
It sets, energy supply device, controller and be pumped into formula fan, be provided with inlet channel and exhaust passage on shell, in exhaust passage
It is provided with suction formula fan, is pumped into formula fan for extracting purified gas out, dust-extraction unit is used to remove the ash in gas
Dirt, dust-extraction unit can clear up the dust on dust-extraction unit automatically, and dust-extraction unit can be rotated under the action of air-flow, described
Collection device is used to collect the dust that storage dust-extraction unit generates, and collection device can shake consolidation to the dust of collection.
2. a kind of filtering cartridge combined dust-remover of the present invention, the dust-extraction unit includes cage, filter core, dedusting wind
Fan, end cap and bearing block, cage left end are mounted on shell by end cap seal, the cage by bearing block, dust extraction fan
Filter core rotation is driven by cage, falls the dust of part cartridge surface automatically, cage is connect with air pump, is provided on cage
Air flue clears up filter core from air flue blowout air-flow, realizes the clearing function of filter core.
3. a kind of filtering cartridge combined dust-remover of the present invention, the collection device are connected with cage, pass through cage
Rotation realize the automatic consolidation of dust in collection device, the storage capacity of ash cellar can be improved.
4. a kind of filtering cartridge combined dust-remover of the present invention, the present invention by dust extraction fan, cage, collection device and
Suction formula fan cooperates with each other, and realizes on filter core the automatic consolidation of ash cellar in the cleaning and ash cellar of dust jointly
Function has filter core cleaning effect good, the feature more than dust storage ash.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is operation schematic diagram of the invention；
Fig. 2 is collection device operation schematic diagram of the invention；
Fig. 3 is the schematic perspective view of the vibrating disk in actual device of the present invention；
In figure: shell 1, dust-extraction unit 2, cage 21, filter core 22, dust extraction fan 23, end cap 24, collection device 3, vibrating disk
31, ball 32, drawstring 33, ash bucket 35, sealing ring 36, ash cellar 37, suction formula fan 4.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
As shown in Figure 1 to Figure 3, a kind of filtering cartridge combined dust-remover, including shell 1, dust-extraction unit 2, collection device 3, pumping
Enter formula fan 4 and controller, inlet channel and exhaust passage are provided on the shell 1, suction formula is provided in exhaust passage
Fan 4 is pumped into formula fan 4 for extracting purified gas out, and 2 slant setting of dust-extraction unit is in shell 1, shell 1
Inside is placed with multiple dust-extraction units 2, and dust-extraction unit 2 is used to remove the dust in gas, and dust-extraction unit 2 can clear up dedusting automatically
Dust on device 2, dust-extraction unit 2 can be rotated under the action of air-flow, and the collection device 3 is removed for collecting storage
The dust that dirt device 2 generates, collection device 3 can shake consolidation to the dust of collection.When the invention works, gas is from shell
1 inlet channel enters, and the gas of 2 pairs of dust-extraction unit inflows is dusted, and collection device 3 is in 2 course of work of dust-extraction unit
The dust of generation is collected storage, and collection device 3 makes to collect the automatic consolidation of dust stored by way of vibration, after purification
Gas under the action of being pumped into formula fan 4 from the exhaust passage of shell 1 flow out.
As one embodiment of the present invention, the dust-extraction unit 2 includes cage 21, filter core 22, dust extraction fan 23
With end cap 24, the cage 21 is mounted on shell 1 by bearing rotary, and 21 relative level of cage is in tilted layout, cage
21 center is equipped with air flue, and air pump is connected to by pipeline with air flue, and cage 21 is provided with stomata along its length；The filter core 22
It is set in the outside of cage 21；The dust extraction fan 23 is mounted on cage 21 and is located at the gas outlet of filter core 22；Described
End 24 is for being sealed the non-outlet side of filter core 22.When the invention works, dust extraction fan 23 drives the rotation of filter core 22, suction
The dust for being attached to 22 surface of filter core is fallen automatically；The cage 21 is connect with air pump, is provided with air flue on cage 21, is blown from air flue
Air-flow clears up filter core 22 out, realizes the clearing function of filter core.
As one embodiment of the present invention, the collection device 3 includes vibrating disk 31, ball 32, drawstring 33, ash bucket
35, sealing ring 36 and ash cellar 37, the vibrating disk 31 are disc-shaped structure, and vibrating disk 31 is mounted on cage 21 and with cage 21
Rotation, the both ends of the surface of vibrating disk 31 are provided with round flange, are provided with rolling tooth on the inside of round flange；The ball 32 is stuck in circle
On shape flange, ball 32 is shaken up and down with the rotation of vibrating disk 31；Described 33 one end of drawstring is connect with ball 32, drawstring 33
The other end be connected with ash cellar 37；The ash bucket 35 is bolted on 1 lower section of shell；The ash cellar 37 is located under ash bucket 35
Side is connected between ash cellar 37 and ash bucket 35 by 36 elastic packing of sealing ring.When the invention works, vibrating disk 31 is with cage 21
Rotation, ball 32 roll in vibrating disc gear hobbing with the rotation of cage 21, because ash cellar 37 and ball 32 pass through drawstring 33 and connect
Together, so that the dust in ash cellar 37 be made to shake consolidation, the clearing times of ash cellar 37 are reduced.
When work, gas enters from the inlet channel of shell 1, is then flowed out by the outlet side of filter core 22, and filter core 22 goes out
The gas of gas end outflow blows the rotation of dust extraction fan 23, and dust extraction fan 23 is rotated together with filter core 22 and cage 21, filter core 22
In the course of rotation, dust of the partial adsorbates on 22 surface of filter core is fallen under gravity in ash cellar 37；Meanwhile it shaking
Moving plate 31 is rotated with cage 21, and ball 32 rolls in vibrating disc gear hobbing with the rotation of cage 21, because of ash cellar 37 and ball 32
It is linked together by drawstring 33, so that the dust in ash cellar 37 be made to shake consolidation, reduces the clearing times of ash cellar 37.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and only illustrating for the description in above embodiments and description is of the invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these change and change
Into all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (1)
1. a kind of filtering cartridge combined dust-remover, including shell (1), dust-extraction unit (2), collection device (3), be pumped into formula fan (4),
And controller, it is characterised in that: be provided with inlet channel and exhaust passage on the shell (1), pumping is provided in exhaust passage
Enter formula fan (4), is pumped into formula fan (4) for extracting purified gas out, dust-extraction unit (2) slant setting is in shell
(1) it in, is placed with multiple dust-extraction units (2) inside shell (1), dust-extraction unit (2) is used to remove the dust in gas and to ash
Dirt carries out self-cleaning, and the collection device (3) is used to collect the dust of storage dust-extraction unit (2) generation, and collection device (3) can be with
Make the dust automatic vibration consolidation collected；
The dust-extraction unit (2) includes cage (21), filter core (22), dust extraction fan (23) and end cap (24), the cage
(21) it is mounted on shell (1) by what bearing rotated, cage (21) relative level is in tilted layout, and the center of cage (21) is set
There is air flue, air pump is connected to by pipeline with air flue, and cage (21) is provided with stomata along its length；The filter core (22) is set in
The outside of cage (21)；The dust extraction fan (23) is mounted on cage (21) and is located at the gas outlet of filter core (22)；It is described
End cap (24) for being sealed to the non-outlet side of filter core (22)；
The collection device (3) includes vibrating disk (31), ball (32), drawstring (33), ash bucket (35), sealing ring (36) and ash cellar
(37), the vibrating disk (31) is disc-shaped structure, and vibrating disk (31) is mounted on cage (21) and rotates with cage (21), vibration
The both ends of the surface of Moving plate (31) are provided with round flange, are provided with rolling tooth on the inside of round flange；The ball (32) is stuck in circle
On flange, ball (32) is shaken up and down with the rotation of vibrating disk (31)；Described drawstring (33) one end is connect with ball (32),
The other end of drawstring (33) is connected with ash cellar (37)；The ash bucket (35) is bolted below shell (1)；The ash cellar
(37) it is located at below ash bucket (35), is connect between ash cellar (37) and ash bucket (35) by sealing ring (36) elastic packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516513.1A CN107096309B (en) | 2017-06-29 | 2017-06-29 | A kind of filtering cartridge combined dust-remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516513.1A CN107096309B (en) | 2017-06-29 | 2017-06-29 | A kind of filtering cartridge combined dust-remover |
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| Publication Number | Publication Date |
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| CN107096309A CN107096309A (en) | 2017-08-29 |
| CN107096309B true CN107096309B (en) | 2019-03-12 |
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| CN201710516513.1A Active CN107096309B (en) | 2017-06-29 | 2017-06-29 | A kind of filtering cartridge combined dust-remover |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983025A (en) * | 2017-11-30 | 2018-05-04 | 安徽省恒伟铋业有限公司 | A kind of fume treatment auxiliary |
| CN111297318A (en) * | 2020-02-20 | 2020-06-19 | 徐翠英 | Be used for clinical eyesight check out test set of medical treatment |
| CN111637553A (en) * | 2020-06-08 | 2020-09-08 | 深圳市特艺达装饰设计工程有限公司 | Air purification device for architectural decoration |
| CN111888856A (en) * | 2020-08-11 | 2020-11-06 | 澳斯意环保工程(苏州)有限公司 | Filter cartridge dust remover capable of self-cleaning |
| CN113069847B (en) * | 2021-04-26 | 2022-10-25 | 阿克陶县诚鑫路桥有限责任公司 | Building site dust collector |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2170144Y (en) * | 1993-02-17 | 1994-06-29 | 李丽红 | Environmental protection dust collector |
| US5391218A (en) * | 1993-09-08 | 1995-02-21 | Donaldson Company, Inc. | Diagnostic and control system for dust collector |
| CN101439252B (en) * | 2008-11-27 | 2011-02-02 | 薛家华 | Filter drum type precipitator |
| CN201524500U (en) * | 2009-10-26 | 2010-07-14 | 江阴市人和环保设备有限公司 | Cartridge type filter |
| CN102671481A (en) * | 2012-04-29 | 2012-09-19 | 苏州市创星通风除尘设备厂 | Cartridge dust collector |
| CN202942760U (en) * | 2012-11-29 | 2013-05-22 | 江苏鑫德龙涂装设备有限公司 | Novel obliquely-inserted filter cartridge deduster |
| CN203244872U (en) * | 2013-05-23 | 2013-10-23 | 陈高 | Dust filtering device |
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Effective date of registration: 20190202 Address after: 841000 Shangku Comprehensive Industrial Park, Korla City, Bayinguoling Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region Applicant after: Xinjiang Zhongjing Hongtai Petroleum Technology Service Co., Ltd. Address before: Room 202, Building A, Venture Center, Yangzhuang Township, Longqiao District, Suzhou City, Anhui Province Applicant before: Suzhou Yu Yu Environmental Protection Technology Co., Ltd. |
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