CN106731299A - Gas-filtering device - Google Patents
Gas-filtering device Download PDFInfo
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- CN106731299A CN106731299A CN201611095787.XA CN201611095787A CN106731299A CN 106731299 A CN106731299 A CN 106731299A CN 201611095787 A CN201611095787 A CN 201611095787A CN 106731299 A CN106731299 A CN 106731299A
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- Prior art keywords
- gas
- filter element
- primordial
- filter medium
- filtering 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
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Electrostatic Separation (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of gas-filtering device of the technological means for employing and being favorably improved filter efficiency, including Primordial Qi side and net gas side that filter element and nationality are separated by filter element, gas to be filtered is from Primordial Qi side through, as gas into net gas side has been filtered, the filter element body and/or the anti-filter medium Contaminated Parts positioned at filter element Primordial Qi side surface are connected to form electrical body when gas-filtering device is in filtration condition with power supply after filter element.When Charged is contained in the dust of gas to be filtered, by making filter element body and/or powered positioned at the anti-filter medium Contaminated Parts of filter element Primordial Qi side surface, these Chargeds can be repelled or be adsorbed, promote solid and gas to separate, be improved dust filtration efficiency.
Description
Technical field
The present invention relates to a kind of dedusting equipment, and in particular to a kind of gas-filtering device.
Background technology
The essential structure of gas-filtering device and operation principle are：Gas-filtering device includes filter element and nationality by filtering
Primordial Qi side and net gas side that element is separated, it is to be filtered between Primordial Qi side and net gas side in the presence of draught head during filtering
Gas has filtered gas into net gas side through turning into after filter element from Primordial Qi side, and the dust in gas to be filtered is then by mistake
The filter medium of filtering element is retained, and realizes that solid and gas is separated.Additionally, the net gas side is typically also associated with filter element blowback dress
Put, during blowback, filter element back-blowing device applies the purge gas of certain pressure, these blowback airs towards the net gas side surface of filter element
Body is reversely peeled off through after filter element to the dust that is attached to filter element Primordial Qi side surface, so as to a certain extent
Recover the gas permeability of filter element.
The mechanism of above-mentioned filter medium retention dust mainly have directly interception, interception of putting up a bridge, gravitational settling, inertial collision,
Diffusive interception and absorption intercept six kinds." directly intercepting " refers to dust by the micropore mechanical interception on filter medium；" bridging is blocked
Cut " to refer to dust intercepted by the dust that being previously filtered of gathering of filtration media surface area is got off；" gravitational settling " and " inertia is touched
Hit " gravity and inertia of dust granules has been utilized respectively to trap dust；" diffusive interception " make use of molecule in gas to be filtered
Brownian movement is clashed into dust increase dust and intercepts probability by filter medium；" absorption is intercepted " then mainly uses the Van der Waals of dust
Power makes dust be adsorbed by filter medium.
At present, directly intercept and bridging interception is the filter medium retention topmost mode of dust, be also to determine gas mistake
Filter the key factor of device filter efficiency.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of technological means for employing and being favorably improved filter efficiency
Gas-filtering device.
Gas-filtering device of the invention, including the Primordial Qi side that is separated by filter element of filter element and nationality and net gas
Side, gas to be filtered has filtered gas into net gas side, the filter element body through turning into after filter element from Primordial Qi side
And/or positioned at filter element Primordial Qi side surface anti-filter medium Contaminated Parts gas-filtering device be in filtration condition when with
Power supply connects to form electrical body.When in the dust of gas to be filtered contain Charged when, by make filter element body and/or
Anti- filter medium Contaminated Parts positioned at filter element Primordial Qi side surface are powered, these Chargeds can be repelled or be inhaled
It is attached.During filtering, gas permeation filter element can be made by the Charged repelled in gas to be filtered and Charged is ostracised
In Primordial Qi side；Gas permeation filter element can be made by the Charged adsorbed in gas to be filtered and Charged is then adsorbed
In Primordial Qi side.In a word, the electrical body promotes solid and gas separation, can improve dust filtration efficiency.
Charged in gas to be filtered can be the inherently powered dust contained in gas to be filtered, it is also possible to
It is that the Charged formed after uncharged dust is charged originally in gas to be filtered is made by certain technological means.In order to
Actively a large amount of Chargeds can be contained to the supply of the Primordial Qi side of the device for above-mentioned gas filter of the present invention provides one
Gas to be filtered applicable elements, the Primordial Qi side is also associated with being used in into the gas to be filtered of the Primordial Qi side
The charged dust charge device of dust.Make device that dust is charged and its technology be it is existing, it is common as in electric cleaner
Corona discharge structure.After dedusting gas by the way that after the corona discharge structure, the dust overwhelming majority therein is negatively charged, seldom
Part positively charged.In a typical electric cleaner, electronegative Charged will be adsorbed by positive electrode plate, treat the lotus of positive electricity
Electric dust will be adsorbed by negative electrode plate；And in the present invention, these Chargeds are by filter element body and/or anti-filter medium
Contaminated Parts repel or adsorb, while combine again filter medium directly intercept, puts up a bridge intercept etc. filtration mechanism, can make to wait to remove
Dust in dust and gas body is more fully filtered.
Above-mentioned gas filter of the invention, it is dirty that its filter element Primordial Qi side surface can set anti-filter medium
Dye part, it is also possible to be not provided with anti-filter medium Contaminated Parts.It may be noted that anti-filter medium Contaminated Parts of the invention refer to：
It is arranged on filter element Primordial Qi side surface and relies primarily on the dress that following at least one modes realize anti-filter medium contamination
Put：1) by repelling as electrical body or adsorbing Charged；2) stopped so as to preventing by the physics that is flowed to dust or
Delay dust close to filter element；3) by the motion destruction of itself be deposited in the dust of filter element Primordial Qi side surface so as to
These dust are made to be easier to depart from from filter element Primordial Qi side surface.When anti-filter medium Contaminated Parts are not provided with, by filtering
The electrical body that component body is formed in the filtration condition can with positively charged, can also be negatively charged.It is being provided with anti-filtering
During medium pollution part, then in the presence of in the filter element in the filtration condition and anti-filter medium Contaminated Parts only one
(positively charged or negative electricity) powered in the filtration condition, filter element and the anti-equal positively charged of filter medium Contaminated Parts, equal band
Negative electricity or one of them positively charged and one of them electronegative various situation.Certainly, filter element is made with anti-filter medium
Electric polarity is opposite between Contaminated Parts, it is ensured that is not contacted between anti-filter medium Contaminated Parts and filter element and respectively constitutes band
Electric body is necessary.
It can be seen that, after anti-filter medium Contaminated Parts are provided with, being capable of extremely flexible selection electrical body and its electric polarity.
With this understanding, the typical setting of one kind of gas-filtering device of the present invention is：In the filtration condition, make the anti-mistake
The electric polarity of the most of Charged in the electric polarity of filter medium Contaminated Parts and the gas to be filtered for entering Primordial Qi side conversely,
And electric polarity of the electric polarity of filter element then with the most of Charged in the gas to be filtered for entering Primordial Qi side is identical.This
Sample set benefit be：Anti- filter medium Contaminated Parts will adsorb the most of Charged in gas to be filtered and repel few
The electric polarity identical Charged of partial electrode and anti-filter medium Contaminated Parts, therefore, it is exhausted big in gas to be filtered
Partial state of charge dust will be difficult to be close to filter element, can avoid the gas permeability rapid decay of filter element；And in gas to be filtered
Least partially penetrate the electric polarity of most of dust in the Charged that anti-filter medium Contaminated Parts are moved to filter element again
Electric polarity with filter element is identical, therefore will be repelled by filter element and be attached on filter element without easy to stick.
The aspect that the present invention is described further with reference to the accompanying drawings and detailed description, the present invention is additional and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or by practice of the invention
Solve.
Brief description of the drawings
Fig. 1 is gas-filtering device of the present invention structural representation in one usage case.
Fig. 2 is gas-filtering device of the present invention structural representation in one usage case.
Fig. 3 is gas-filtering device of the present invention structural representation in one usage case.
Fig. 4 is the fundamental diagram of filter element in one usage case of the invention and anti-filter medium Contaminated Parts.
Fig. 5 is a kind of concrete structure schematic diagram of anti-filter medium Contaminated Parts in gas-filtering device of the present invention.
Specific embodiment
As shown in Figures 1 to 3, gas-filtering device 200 includes that filter element 210 and nationality are separated by filter element 210
Primordial Qi side 220 and net gas side 230, the net gas side 220 is connected with filter element back-blowing device 270, during filtering, gas to be filtered
Body 110 has filtered gas into net gas side 230 through turning into after filter element 210 from Primordial Qi side 220, during blowback, filter element
Back-blowing device 270 applies the purge gas of certain pressure towards the net gas side surface of filter element, and these purge gas are reversely through filtering
The dust for being attached to the Primordial Qi side surface of filter element 210 is peeled off after element 210.
Above-mentioned gas-filtering device 200 is applied in industrial furnace gas dust pelletizing system, the industrial furnace gas dust pelletizing system bag
Industrial Stoves 100, gas-filtering device 200 and blower fan 300 are included, wherein, the connection of Primordial Qi side 220 work of gas-filtering device 200
Industry kiln 100, the connecting fan 300 of net gas side 230.During system operation, under the driving of blower fan 300, from Industrial Stoves 100
Gas to be filtered 110 enters Primordial Qi side 220, then turns into through filter element 210 from Primordial Qi side 220 and has filtered gas into only
Gas side 230, then enter follow-up link.
As shown in figure 1, the body of filter element 210 of the gas-filtering device 200 is in filtering shape in gas-filtering device
It is connected to form electrical body with power supply 260 during state.In the industrial furnace gas dust pelletizing system of Fig. 1, it is to be filtered that Industrial Stoves 100 are discharged
Contain Charged 111 in gas 110, can be used to adsorb when the body of filter element 210 positively charged under the filtration condition
Electronegative Charged 111 simultaneously repels the Charged 111 of positively charged, when the body of filter element 210 is in the filtration condition
Under it is negatively charged when can be used for the Charged 111 for repelling electronegative Charged 111 and adsorbing positively charged.
In the industrial furnace gas dust pelletizing system of Fig. 1, typically Charged 111 contained in gas to be filtered 110
Middle major part is negatively charged.It is corresponding, the body of filter element 210 can be arranged to the positively charged under the filtration condition, that is, lead to
The absorption Charged 111 as much as possible of filter element 210 is crossed, dust irregular motion in Primordial Qi side 220 is reduced.And
During blowback, in order to the Charged 111 for helping these adsorbed is easier to depart from from the Primordial Qi side surface of filter element 210, can be with
Change the electric polarity of filter element 210, make its negatively charged, and then produce the repulsive force to the Charged 111 being adsorbed.Pass through
The repulsion of electricity of the same race and the double action of blow-back, can be carried out more to the dust for being attached to the Primordial Qi side surface of filter element 210
It is effective to peel off.
The electric polarity for changing filter element 210 is very easily to realize.In practice, by the connection of the body of filter element 210
The electric power polarity conversion equipment set with the linkage of filter element back-blowing device 270.The structure of electric power polarity conversion equipment
It is existing.Filter element back-blowing device 270 and electric power polarity conversion equipment are linked and is set, filter element back-blowing device can be made
There is interaction relation with the startup of electric power polarity conversion in 270 startup.This linkage is set by conventional control mode with regard to energy
It is enough to realize.
The industrial furnace gas dust pelletizing system of Fig. 2 increased dust charge device 400 on the basis of Fig. 1.Specifically, the powder
The corona discharge structure for making dust charged is provided with dirt charge device 400, the corona discharge structure and function with it is existing
Corona discharge structure in electric cleaner is similar to.Certainly, the charged mode of dust is made not to only have corona discharge a kind of.Due to setting
Dust charge device 400 is put, the dust overwhelming majority in the gas to be filtered 110 for passing through turns into Charged 111.Charged powder
The overwhelming majority is negatively charged in dirt 111.At this moment, if the body of filter element 210 is arranged to the positively charged under the filtration condition, will be fast
The more Charged 111 of speed absorption, causes the gas permeability of filter element 210 comparatively fast to decay.Therefore, the industrial furnace gas of Fig. 2 are removed
In dirt system the body of filter element 210 be preferably positioned to it is negatively charged under the filtration condition, with to most of Chargeds 111
Repelled.The electric polarity of filter element 210 need not then be changed in blowback.
The industrial furnace gas dust pelletizing system of Fig. 3 is improved on the basis of Fig. 1, in the Primordial Qi side surface of filter element 210
There is provided anti-filter medium Contaminated Parts 240.Wherein, between the anti-filter medium Contaminated Parts 240 and filter element 210 not
Contact and respectively constitute electrical body.Specifically, anti-filter medium Contaminated Parts 240 are spaced apart with filter element 210,
The body of filter element 210 and anti-filter medium Contaminated Parts 240 when gas-filtering device is in filtration condition respectively with electricity
The connection of source 260 forms independent electrical body.Make discontiguous master between anti-filter medium Contaminated Parts 240 and filter element 210
The one of syllabus is to allow anti-filter medium Contaminated Parts 240 to the absorption or repulsion of Charged 111 to a certain extent away from mistake
Filtering element 210, further reduces the chance that Charged 111 is contacted with filter element 210；Two is to work as to need anti-filter medium dirty
Dye part 240 prevents both from contacting when respectively constituting electrical body with filter element 210.
Anti- filter medium Contaminated Parts 240 can be identical with the electric polarity of filter element 210.For example, passing through dust charge Denso
Putting the dust overwhelming majority in 400 gas to be filtered 110 turns into most bands in Charged 111, and Charged 111
Negative electricity, then when the body of filter element 210 and anti-filter medium Contaminated Parts 240 are all provided with being set to the positively charged under the filtration condition
When, it is substantial amounts of because electronegative Charged 111 first passes through anti-filter medium Contaminated Parts 240 to be polluted by anti-filter medium
Part 240 is adsorbed, and necessarily reduces the Charged 111 adsorbed by filter element 210, is breathed freely so as to slow down filter element 210
Property decay；When the body of filter element 210 and anti-filter medium Contaminated Parts 240 be all provided with being set to it is negatively charged under the filtration condition
When, electronegative Charged 111 first passes through anti-filter medium Contaminated Parts 240 and substantial amounts of by anti-filter medium Contaminated Parts
240 are repelled, and reduce the electronegative Charged 111 to be faced of filter element 210, preferably prevent electronegative lotus
Electric dust 111 is contacted with filter element 210.
Another way is to make anti-filter medium Contaminated Parts 240 opposite with the electric polarity of filter element 210.Due to charged
Always existing electronegative Charged 111 also has the Charged 111 of positively charged in dust 111, pollutes anti-filter medium
After part 240 is opposite with the electric polarity of filter element 210, in anti-filter medium Contaminated Parts 240 and filter element 210 wherein
One can be used to a kind of electropolar Charged 111 and be adsorbed, anti-filter medium Contaminated Parts 240 and filter element
Another in 210 can be used to repel another electropolar Charged 111.For example, as shown in figure 4, passing through
The dust overwhelming majority in the gas to be filtered 110 of dust charge device 400 turns into Charged 111, and Charged 111
The overwhelming majority is negatively charged, then when the body of filter element 210 is arranged to the negatively charged and anti-filter medium dirt under the filtration condition
When dye part 240 is arranged to the positively charged under the filtration condition, electronegative Charged 111 pollutes by anti-filter medium
Part 240 and it is substantial amounts of adsorbed by anti-filter medium Contaminated Parts 240, the Charged 111 of a small amount of positively charged is close to anti-
Repelled by anti-filter medium Contaminated Parts 240 during filter medium Contaminated Parts 240, still there are some Chargeds 111 to pass through
Anti- filter medium Contaminated Parts 240 are moved to filter element 210, due to the charged powder through anti-filter medium Contaminated Parts 240
Most in dirt 111 is still electronegative Charged, and they slow down and filter element the repulsion for being subject to filter element 210
The probability of 210 contacts is easily adsorbed by anti-filter medium Contaminated Parts 240 simultaneously, therefore, the primary attachment of filter element 210 is very
The Charged of a small amount of positively charged through anti-filter medium Contaminated Parts 240.
As shown in figure 5, used as a kind of specific embodiment of anti-filter medium Contaminated Parts 240, the anti-filter medium is dirty
The surface for contaminating part 240 is netted and is spaced 0.1 to 8mm with the Primordial Qi side surface of filter element 210.Additionally, as shown in Fig. 3 to 5,
The anti-filter medium Contaminated Parts 240 can also be connected can make the anti-filter medium Contaminated Parts 240 in the Primordial Qi of filter element 210
The drive device 250 of side surface motion.When a large amount of dusts are assembled on anti-filter medium Contaminated Parts 240, by drive device
250 drive anti-filter medium Contaminated Parts 240 to be moved in the Primordial Qi side surface of filter element 210, will cause that these dusts are easier
Depart from from anti-filter medium Contaminated Parts 240.Between anti-filter medium Contaminated Parts 240 and the Primordial Qi side surface of filter element 210
From that can be more preferably 0.5 to 3mm, in this distance range, gas-filtering device 200 be gradually gathered in gauge when running
The dust of the Primordial Qi side surface of filter element 210 will cover anti-filter medium Contaminated Parts 240, be polluted by driving anti-filter medium
Part 240 can essentially to a certain extent loosen the dust of the Primordial Qi side surface of filter element 210, such as anti-filter medium is dirty
Dye part 240 can rotate around the central shaft 211 of filter element 210, make the dust of the Primordial Qi side surface of filter element 210 that pine to occur
Dynamic, blowback is so carried out again peels off preferably the dust of the Primordial Qi side surface of filter element 210.
Claims (10)
1. the Primordial Qi side (220) that gas-filtering device, including filter element (210) and nationality are separated by filter element (210)
With net gas side (230), gas (110) to be filtered turns into afterwards from Primordial Qi side (220) through filter element (210) has filtered gas and has entered
Enter net gas side (230), it is characterised in that：Filter element (210) body and/or positioned at filter element (210) Primordial Qi side table
The anti-filter medium Contaminated Parts (240) in face are connected to form band when gas-filtering device is in filtration condition with power supply (260)
Electric body.
2. gas-filtering device as claimed in claim 1, it is characterised in that：The Primordial Qi side (220) is connected with and can use
The charged dust charge device (400) of dust in the gas to be filtered (110) for entering the Primordial Qi side (220).
3. gas-filtering device as claimed in claim 2, it is characterised in that：It is provided with the dust charge device (400)
For the corona discharge structure for making dust charged.
4. gas-filtering device as claimed in claim 2, it is characterised in that：Filter element (210) body and/or anti-mistake
Electric polarity of the filter medium Contaminated Parts (240) in the filtration condition and the gas to be filtered (110) for entering Primordial Qi side (220)
In most of Charged (111) electric polarity it is identical.
5. gas-filtering device as claimed in claim 1, it is characterised in that：The net gas side (220) is connected with filter element
Back-blowing device (270)；Filter element (210) body and/or anti-filter medium Contaminated Parts (240) are connected with and cross filtering element
The electric power polarity conversion equipment that part back-blowing device (270) linkage is set.
6. the gas-filtering device as described in any one claim in claim 1 to 5, it is characterised in that：The anti-mistake
Do not contacted between filter medium Contaminated Parts (240) and filter element (210) and respectively constitute electrical body.
7. gas-filtering device as claimed in claim 6, it is characterised in that：The anti-filter medium Contaminated Parts (240) exist
Electric polarity is opposite between filter element (210) during the filtration condition.
8. gas-filtering device as claimed in claim 7, it is characterised in that：The anti-filter medium Contaminated Parts (240) exist
The electric polarity during filtration condition and the most of Charged in the gas to be filtered (110) of entrance Primordial Qi side (220)
(111) electric polarity is opposite.
9. gas-filtering device as claimed in claim 6, it is characterised in that：The anti-filter medium Contaminated Parts (240)
Surface is netted and is spaced 0.1 to 8mm with filter element (210) Primordial Qi side surface.
10. the gas-filtering device as described in any one claim in claim 1 to 5, it is characterised in that：The anti-mistake
Filter medium Contaminated Parts (240) are connected with can make the anti-filter medium Contaminated Parts (240) in filter element (210) Primordial Qi side table
The drive device (250) of face motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611095787.XA CN106731299B (en) | 2016-12-02 | 2016-12-02 | Gas filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611095787.XA CN106731299B (en) | 2016-12-02 | 2016-12-02 | Gas filtering device |
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| Publication Number | Publication Date |
|---|---|
| CN106731299A true CN106731299A (en) | 2017-05-31 |
| CN106731299B CN106731299B (en) | 2023-05-12 |
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| CN201611095787.XA Active CN106731299B (en) | 2016-12-02 | 2016-12-02 | Gas filtering device |
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| CN203140156U (en) * | 2013-03-01 | 2013-08-21 | 武汉景弘环保科技股份有限公司 | Reverse-electric-field electric bag dust remover |
| KR101505000B1 (en) * | 2014-09-19 | 2015-03-23 | 주식회사 유진엠에스 | Dust collector for fume removal |
| CN204469454U (en) * | 2014-12-30 | 2015-07-15 | 成都易态科技有限公司 | Gas-filtering device |
| CN206334452U (en) * | 2016-12-02 | 2017-07-18 | 成都易态科技有限公司 | Gas-filtering device |
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