CN108465334A - Waste gas purification apparatus - Google Patents
Waste gas purification apparatus Download PDFInfo
- Publication number
- CN108465334A CN108465334A CN201810559666.9A CN201810559666A CN108465334A CN 108465334 A CN108465334 A CN 108465334A CN 201810559666 A CN201810559666 A CN 201810559666A CN 108465334 A CN108465334 A CN 108465334A
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- shell
- filtration members
- water
- sprinkler head
- inlet pipe
- 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.)
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- 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
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
Abstract
The present invention relates to a kind of waste gas purification apparatuses, are related to air purification field, and main purpose is to solve that continuous moisture film cannot be formed inside existing clarifier, leads to the technical problem not good enough to the clean-up effect of exhaust gas.The technical solution mainly used for：Waste gas purification apparatus comprising first shell, second shell, sprinkler head, spill piece, the first filtration members and rotary nozzle, the upper end opening of first shell and the lower ending opening of second shell connect, and the lower end of first shell is covered with bottom case；Sprinkler head is located in second shell；Spill piece is arranged in first shell, and there is the sink of indent, the water in second shell can flow in sink for the upper end of spill piece；First filtration members are cylindrical in shape, and the upper end of the first filtration members is set on the side wall of spill piece；Rotary nozzle is arranged on the inside of filtration members, and rotary nozzle is connect with air inlet pipe, different location exhaust gas being ejected into successively in filtration members circumferential direction.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of waste gas purification apparatus.
Background technology
Since the workshop of factory is a semi-enclosed space, machine will produce exhaust gas during production and full of whole
A workshop causes the quality of air in workshop to decline.If workers with long time sucks these exhaust gas, health is just influenced whether,
If these exhaust gas to be directly discharged to the outside in workshop, it be easy to cause outdoor air pollution.
Exhaust gas is purified currently, being generally fitted with clarifier in factory.And clarifier is mainly by filtration members
Surface formed water membrane exhaust gas is filtered and is purified.However, when exhaust gas continuously passes through the same position of filtration members,
The position of filtration members cannot form continuous moisture film due to there is continuing through for exhaust gas, to be formed to exhaust gas continuously
Effective purification, causes clean-up effect not ideal enough.
Accordingly, it is desirable to provide a kind of new technical solution solves above-mentioned technical problem.
Invention content
In view of this, the present invention provides a kind of waste gas purification apparatus, main purpose is to solve inside existing clarifier not
Continuous moisture film can be formed, the technical problem not good enough to the clean-up effect of exhaust gas is caused.
In order to achieve the above objectives, present invention generally provides following technical solutions：
The embodiment of the present invention provides a kind of waste gas purification apparatus comprising：
The inside of both first shell and second shell, the first shell and the second shell is hollow, and described
The upper end opening of one shell is connect with the lower ending opening of the second shell, and the bottom end cover conjunction of the first shell has the bottom
Shell；The interior shape of the first shell meets：In first shell internal flow, the flow velocity of gas is gradual from bottom to top for gas
Increase；
Sprinkler head is located in the second shell, and the sprinkler head is connect with water inlet pipe, in the second shell
Downward spray water；
Extractor fan is located at the top of the sprinkler head comprising wheel disc and multiple flabellums, the wheel disc are in cylinder
It shape and is rotatably arranged in the second shell, the water inlet pipe passes through inside the wheel disc, and multiple flabellums are along week
It is arranged to being arranged on the inner wall of the wheel disc and surrounding the water inlet pipe, between having between the flabellum and the water inlet pipe
Gap；
Stirring rod is arranged on the wheel disc, and the spraying range of the sprinkler head is stretched in one end of the stirring rod, described
Stirring rod under the drive of the wheel disc for stirring the water and the gas flowed out from the first shell that sprinkler head sprays；
Spill piece is arranged in the first shell, and the upper end of the spill piece has the sink of indent, the sink
Opening is opposite with the lower ending opening of the second shell, so that the water in the second shell can flow in the sink；
First filtration members, are cylindrical in shape, and the upper end of first filtration members is set on the side wall of the spill piece, make from
The water overflowed in the sink can flow in the first filtration members, to form water membrane in first filtration members；
Rotary nozzle is arranged on the inside of first filtration members, and the rotary nozzle will be waited for for being connect with air inlet pipe
The exhaust gas of purification is ejected into the different location in the first filtration members circumferential direction successively；
Air pump is arranged in the air inlet pipe, is used for external Abgasabsaugung to be clean to the air inlet pipe.
By above-mentioned technical proposal, waste gas purification apparatus of the present invention at least has the advantages that：
It, can be with when the water in sink is spilt into from spill piece in the first filtration members in technical solution provided by the invention
Water membrane is formed in the first filtration members, and exhaust gas to be clean is ejected by rotary nozzle successively during rotation
Different location in the circumferential direction of one filtration members, it is extensive to be provided for the formation again of moisture film on the same position of the first filtration members
The multiple time, allow to be purified by water film filtering always when the different location on the exhaust blast to the first filtration members of rotary nozzle,
And then the clean-up effect of exhaust gas can be improved.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram for waste gas purification apparatus that one embodiment of the invention provides；
Fig. 2 is the assembling structure signal of a kind of extractor fan that one embodiment of the invention provides and both second shells
Figure.
Reference numeral：1, first shell；2, second shell；21, limiting slot；201, the first via；3, bottom case；31, first
Bottom case；32, the second bottom case；4, sprinkler head；5, extractor fan；51, wheel disc；511, driving cog；512, ball；52, flabellum；6, it stirs
Mix bar；7, spill piece；71, sink；8, the first filtration members；9, rotary nozzle；91, air inlet pipe；10, air pump；11, motor；12, main
Moving gear；13, water inlet pipe；14, the second filtration members；15, ring support；150, closed chamber；16, water tank；17, outlet pipe；
18, water pump；19, support base；191, support slot；192, holding tank；20, fixed frame；201, the first linking arm；202, second
Linking arm；100, waste gas purification apparatus.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc.
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, when the knot that conflicting or cannot achieve when will be understood that this technical solution occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection domain within.
As shown in Figure 1, a kind of waste gas purification apparatus 100 that one embodiment of the present of invention proposes comprising first shell
1, second shell 2, sprinkler head 4, extractor fan 5, stirring rod 6, spill piece 7, the first filtration members 8, rotary nozzle 9 and air pump 10.
The inside of 2 the two of first shell 1 and second shell is hollow.The lower ending opening of the upper end opening and second shell 2 of first shell 1
Connection.The lower end of first shell 1 is covered with bottom case 3.Sprinkler head 4 is located in second shell 2, and sprinkler head 4 is connect with water inlet pipe 13,
With the downward spray water in second shell 2.The interior shape of first shell 1 meets：Gas is from bottom to top inside first shell 1
The flow velocity of gas gradually increases when flowing.Preferably, first shell 1 is gradually reduced from bottom to top in taper type and internal diameter.So
Gas in first shell 1 can be flowed into autoacceleration in second shell 2, and the water sprayed with sprinkler head 4 carries out high-speed impact, makes
The water that sprinkler head 4 sprays forms atomizing effect, so as to improve the contact area for the water that exhaust gas is sprayed with sprinkler head 4, in turn
Clean-up effect is more preferably；And without the extra power for providing gas acceleration, save the energy.
Extractor fan 5 is located at the top of sprinkler head 4.Extractor fan 5 includes wheel disc 51 and multiple flabellums 52.Wheel disc 51 is in circle
It tubular and is rotatably arranged in second shell 2.The water inlet pipe 13 of aforementioned connection sprinkler head 4 passes through inside wheel disc 51.It is multiple
Flabellum 52 is circumferentially disposed on the inner wall of wheel disc 51 and is arranged around water inlet pipe 13.Have between flabellum 52 and water inlet pipe 13
Gap.In this example, by the extractor fan of setting 5, help purified gas in second shell 2 being discharged to outer
Portion.
Stirring rod 6 is arranged on wheel disc 51.The spraying range of sprinkler head 4 is stretched in one end of stirring rod 6.Stirring rod 6 is used for
The water and the gas flowed out from first shell 1 that sprinkler head 4 sprays are stirred under the drive of wheel disc 51, and gas is made to be sprayed with sprinkler head 4
The water gone out fully contacts, and to further increase the contact area for the water that gas is sprayed with sprinkler head 4, further improves exhaust gas
Clean-up effect.
Spill piece 7 is arranged in first shell 1.The upper end of spill piece 7 has the sink 71 of indent.The opening of sink 71
It is opposite with the lower ending opening of second shell 2, so that the water in second shell 2 can flow in sink 71.In this example, overflow
Part 7 has the function of accepting the water that sprinkler head 4 sprays in second shell 2.
First filtration members 8 are cylindrical in shape.The upper end of first filtration members 8 is set on the side wall of spill piece 7, is made out of sink 71
The water of spilling can flow in the first filtration members 8, to form water membrane in the first filtration members 8.Rotary nozzle 9 is arranged first
8 inside of filtration members.Exhaust gas to be clean is ejected into the first filtration members 8 by rotary nozzle 9 successively for being connect with air inlet pipe 91
Different location in circumferential direction.Air pump 10 is arranged in air inlet pipe 91.Air pump 10 be used for by external Abgasabsaugung to be clean into
Tracheae 91.
It, can when the water in sink 71 is spilt into from spill piece 7 in the first filtration members 8 in the technical solution of above-mentioned offer
To form water membrane in the first filtration members 8, and rotary nozzle 9 sprays exhaust gas to be clean during rotation successively
The different location being mapped in the circumferential direction of the first filtration members 8, to the formation again for moisture film on the same position of the first filtration members 8
Recovery time is provided, always by moisture film when alloing the different location on the exhaust blast to the first filtration members 8 of rotary nozzle 9
Filtration, purification, and then the clean-up effect of exhaust gas can be improved.
Further, as depicted in figs. 1 and 2, waste gas purification apparatus 100 of the invention can also include motor 11 and active
Gear 12.The periphery of wheel disc 51 is equipped with driving cog 511.Wheel disc 51 is rotationally embedded on the inner wall of second shell 2.Second
The inner wall of shell 2 is equipped with the first via 201.Driving gear 12 is via the driving cog 511 on first via 201 and wheel disc 51
Engagement.Motor 11 is drivingly connected with driving gear 12, to be rotated with runner disc 51 by driving gear 12.In this example, lead to
The motor 11 and driving gear 12 for crossing setting, have labor-saving technique effect.
Further, as shown in Fig. 2, can have limiting slot 21 on the inner wall of aforementioned second shell 2.Wheel disc 51 is rotatable
Ground is arranged in the limiting slot 21.Ball 512 is embedded on the outer wall of wheel disc 51, wheel disc 51 passes through ball 512 and limiting slot 21
Wall surface cooperation, so have reduce frictional resistance technique effect.
Further, as shown in Figure 1, the waste gas purification apparatus 100 of the present invention can also include the second filtration members 14.Second
Filtration members 14 are arranged in second shell 2 and positioned at the tops of extractor fan 5, to do last filtering to gas to be discharged,
Further increase the filter effect of exhaust gas.
Further, as shown in Figure 1, the waste gas purification apparatus 100 of the present invention can also include ring support 15.Annular branch
The upper end of frame 15 is connect with the lower end of the first filtration members 8.The lower end of ring support 15 is connect with bottom case 3.Wherein, spill piece 7,
One filtration members 8, ring support 15 and bottom case 3 cooperate, and to cross a closed chamber 150, rotary nozzle 9 are made to spray
Gas can only be flowed out through the first filtration members 8, to prevent from being put into first shell 1 after exhaust gas is filtered, improve exhaust gas
Filter effect.
Further, as shown in Figure 1, aforementioned bottom case 3 may include the first bottom case 31 and the second bottom case 32.First bottom case 31
It is equipped with the second via passed through for air inlet pipe 91.First bottom case 31 is used to cover the lower ending opening of ring support 15.Second bottom
Shell 32 is annular in shape and is formed by circular opening between ring support 15 and first shell 1 for covering.Wherein, the first bottom case
31 and second bottom case 32 can be dismantled with respect to first shell 1.Specifically, the exhaust gas that rotary nozzle 9 sprays is through the first filtration members 8
After filtering, the particulate matter of large-size can be filtered, and fall on the first bottom case 31.And by dismantling the first bottom case 31,
Filtrate on the first bottom case of convenient working personnel couple 31 is handled.Likewise, the water that gas is sprayed through moisture film and sprinkler head 4
Filtered sundries can be fallen on the second bottom case 32, and by dismantling the second bottom case 32, the second bottom case of convenient working personnel couple
Filtrate on 32 is handled.
Further, the first bottom case 31 above-mentioned can be two-half structure.Second via above-mentioned includes setting the
The first half bore in the half of one bottom case 31 and the second half bore on the other half, so have facilitate bottom case 3 and air inlet pipe 91 it
Between the technique effect that assembles.
Further, as shown in Figure 1, the waste gas purification apparatus 100 of the present invention can also include water tank 16,17 and of outlet pipe
Water pump 18.Water tank 16 is located at the lower section of first shell 1.Outlet pipe 17 makes first shell for being connected to first shell 1 and water tank 16
Water in 1 can flow into water tank 16 under gravity.Water pump 18 is for the water in water tank 16 to be evacuated in water inlet pipe 13.Such as
Water in this water tank 16 can form one via water inlet pipe 13, sprinkler head 4, sink 71, the first filtration members 8 and second shell 2
Cycle, can improve the utilization ratio of water in this way.
What needs to be explained here is that：Since water is during cycle is filtered exhaust gas, water is easily contaminated, therefore
Water in water tank 16 needs to regularly replace in use for some time, to keep water to the preferable filter effect of exhaust gas.
Further, as shown in Figure 1, the waste gas purification apparatus 100 of the present invention can also include support base 19.Support bottom
Seat 19 is equipped with the support slot 191 for providing first shell 1 support.The bottom of support slot 191 is equipped with for accommodating water tank
16 and air pump 10 holding tank 192.Holding tank 192 is through the opposite two sides of support base 19.The size of holding tank 192 with
The shape size of bottom case 3 is adapted, to provide space from the dismounting of lower part to bottom case 3.Specifically, operating personnel can be via
Hand is extend into the lower section of bottom case 3 by holding tank 192, individually to be dismantled to bottom case 3.By water tank 16 and air pump 10 from receiving
After the side of slot 192 removes, the bottom case 3 after dismounting can also be removed from the side of holding tank 192, so had and conveniently individually torn open
Fill the technique effect of bottom case 3.
Further, as shown in Figure 1, the waste gas purification apparatus 100 of the present invention can also include being located in first shell 1
Fixed frame 20.Fixed frame 20 has the first linking arm 201 and more than two spaced second linking arms 202.Each second connects
Arm 202 is connect to open out against.Wherein, one end of the first linking arm 201 is connect with the bottom of sink 71, the first linking arm 201
The other end connect with one end of the second linking arm 202, the other end of the second linking arm 202 is connect with the inner wall of first shell 1.
In this example, spill piece 7 can be fixed on the inside of first shell 1 by fixed frame 20, and not interfere with the normal of gas
Pass through.
Operation principle of the invention is described below.
As shown in Figure 1, the waste gas purification apparatus 100 of the present invention is at work, water pump 18 is first turned on, water pump 18 is by water tank
Water in 16 is pumped to water inlet pipe 13, and the water in water inlet pipe 13 is sprayed through sprinkler head 4, and the water that sprinkler head 4 sprays is from second shell 2
It falls in screw clamp 71, is spilt into the first filtration members 8 after the water in sink 71 is full, and in the first filtration members 8 after interior outflow
Form water membrane.Extra water flows to the bottom of first shell 1 from the first filtration members 8, and flows back into water via outlet pipe 17
In case 16.It is then turned on air pump 10, exhaust gas is ejected by air pump 10 by Abgasabsaugung to rotary nozzle 9, rotary nozzle 9 successively
Different location in the circumferential direction of first filtration members 8.Exhaust gas is by moisture film when the first filtration members 8 by the first filtration members 8 and thereon
It filters and enters in first shell 1, then gas autoacceleration in first shell 1 flows into second shell 2, flows into second shell
The water high-speed impact that gas in 2 is sprayed with sprinkler head 4 makes the water that sprinkler head 4 sprays form atomizing effect, so as to improve
The contact area for the water that gas is sprayed with sprinkler head 4.At the same time stirring rod can be driven when the wheel disc 51 of extractor fan 5 rotates
6 rotate together, the gas that stirring rod 6 stirs the water of the ejection of sprinkler head 4 under the drive of wheel disc 51 and flowed out from first shell 1,
The water that gas is sprayed with sprinkler head 4 is set fully to contact, to further increase the contact surface for the water that gas is sprayed with sprinkler head 4
Product, further improves the clean-up effect of gas.Last gas is discharged under the drive of flabellum 52 through the second filtration members 14 outer
Portion, to the air after being purified.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (1)
1. a kind of waste gas purification apparatus, which is characterized in that including：
First shell (1) and second shell (2), during the inside of both the first shell (1) and described second shell (2) is equal
The upper end opening of sky, the first shell (1) is connect with the lower ending opening of the second shell (2), the first shell (1)
Bottom end cover conjunction has the bottom case (3)；The interior shape of the first shell (1) meets：Gas is from bottom to top in first shell (1)
The flow velocity of gas gradually increases when internal flow；
Sprinkler head (4) is located in the second shell (2), and the sprinkler head (4) connect with water inlet pipe (13), with described
Downward spray water in second shell (2)；
Extractor fan (5) is located at the top of the sprinkler head (4) comprising wheel disc (51) and multiple flabellums (52), the wheel
Disk (51) is cylindrical and is rotatably arranged in the second shell (2), and the water inlet pipe (13) passes through the wheel disc
(51) internal, multiple flabellums (52) are circumferentially disposed on the inner wall of the wheel disc (51) and around the water inlet pipes
(13) it is arranged, there is gap between the flabellum (52) and the water inlet pipe (13)；
Stirring rod (6) is arranged on the wheel disc (51), and the sprinkling of the sprinkler head (4) is stretched in one end of the stirring rod (6)
Range, the stirring rod (6) is for the water that stirring sprinkler head (4) sprays under the drive of the wheel disc (51) and from described first
The gas of shell (1) outflow；
Spill piece (7), in the first shell (1), the upper end of the spill piece (7) has the sink (71) of indent for setting,
The opening of the sink (71) is opposite with the lower ending opening of the second shell (2), so that the water energy in the second shell (2)
It flows in the sink (71)；
First filtration members (8), are cylindrical in shape, and the upper end of first filtration members (8) is set in the side wall of the spill piece (7)
On, so that the water overflowed out of the sink (71) is flowed in the first filtration members (8), with the shape on first filtration members (8)
At water membrane；
Rotary nozzle (9), on the inside of first filtration members (8), the rotary nozzle (9) is used for air inlet pipe (91) even for setting
It connects, exhaust gas to be clean is ejected into the different location in the first filtration members (8) circumferential direction successively；
Air pump (10) is arranged in the air inlet pipe (91), is used for external Abgasabsaugung to be clean to the air inlet pipe
(91)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559666.9A CN108465334B (en) | 2018-06-02 | 2018-06-02 | Exhaust gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559666.9A CN108465334B (en) | 2018-06-02 | 2018-06-02 | Exhaust gas purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108465334A true CN108465334A (en) | 2018-08-31 |
| CN108465334B CN108465334B (en) | 2021-01-05 |
Family
ID=63261898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810559666.9A Active CN108465334B (en) | 2018-06-02 | 2018-06-02 | Exhaust gas purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108465334B (en) |
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| CN2092676U (en) * | 1991-02-22 | 1992-01-08 | 广州市兴华环保通用设备厂 | Waterfilm filter for smoke in tubing |
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|---|---|---|---|---|
| CN2092676U (en) * | 1991-02-22 | 1992-01-08 | 广州市兴华环保通用设备厂 | Waterfilm filter for smoke in tubing |
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| US20100116140A1 (en) * | 2007-07-13 | 2010-05-13 | Ebara Corporation | Exhaust gas cleaning apparatus |
| KR100963537B1 (en) * | 2009-11-25 | 2010-06-15 | 한국기계연구원 | Multi-layer cleansing type removing apparatus for condensible tar in exhaust gas |
| CN203124143U (en) * | 2013-03-01 | 2013-08-14 | 周波 | Nozzle capable of automatically rotating at 360 degrees |
| CN205598839U (en) * | 2016-02-04 | 2016-09-28 | 上海晶顿科技有限公司 | Exhaust gas purification system suitable for laboratory |
| CN205461594U (en) * | 2016-02-05 | 2016-08-17 | 上海瀚广实业有限公司 | Washing air purification device |
| CN107715633A (en) * | 2017-11-13 | 2018-02-23 | 王宏亮 | A kind of eddy flow blowing type self-cleaning block-resistant cleaner |
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| 东北工学院通风教研究: "《除尘技术基础》", 31 October 1981 * |
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| Publication number | Publication date |
|---|---|
| CN108465334B (en) | 2021-01-05 |
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Effective date of registration: 20201218 Address after: No. 3-5 and No. 3-6 of Leliu port Intensive Industrial Development Zone, Leliu neighborhood committee, Leliu sub district office, Shunde District, Foshan City, Guangdong Province, 528300 Applicant after: GUANGDONG KELIN ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Address before: 523690 Third Floor, No. 5 Tongfu Road, Guanjingtou Village, Fenggang Town, Dongguan City, Guangdong Province Applicant before: Chen Aixia |
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Denomination of invention: Waste gas purification device Effective date of registration: 20211125 Granted publication date: 20210105 Pledgee: Guangdong Shunde Rural Commercial Bank Co.,Ltd. science and technology innovation sub branch Pledgor: GUANGDONG KELIN ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Registration number: Y2021980013245 |
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