CN107158868B - A kind of industrial dedusting device - Google Patents
A kind of industrial dedusting device Download PDFInfo
- Publication number
- CN107158868B CN107158868B CN201710516562.5A CN201710516562A CN107158868B CN 107158868 B CN107158868 B CN 107158868B CN 201710516562 A CN201710516562 A CN 201710516562A CN 107158868 B CN107158868 B CN 107158868B
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- CN
- China
- Prior art keywords
- dust
- water
- shell
- collection device
- filter cylinder
- 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.)
- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000000428 dust Substances 0.000 claims abstract description 56
- 238000000605 extraction Methods 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 28
- 238000005192 partition Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 238000013517 stratification Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000537371 Fraxinus caroliniana Species 0.000 description 1
- 235000010891 Ptelea trifoliata Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to environmental protection appliance fields, specifically a kind of industrial dedusting device, including shell, water injector, dust-extraction unit, collection device, shutter, blower and controller, inlet channel and exhaust passage are provided on the shell, exhaust passage is connected with blower, blower is for extracting purified gas out, it is characterized by: being equipped with traveling wheel below the shell, the water injector is mounted on the top of shell, water injector is used to settle the dust that collection device is cleared up and cleans to cleaning plant, dust-extraction unit installs top position inside housings, dust-extraction unit is used to remove the dust in gas, collection device is used to collect the dust generated in storage dust removal process, shutter is installed inside housings close to the position of inlet channel, the setting of shutter bottom angled, the present invention in industrial production for subtracting The discharge amount of few dust, can be improved dust settling speed and cleans to collection device, have preferable filter effect.
Description
Technical field
The present invention relates to field of environment protection equipment, specifically a kind of industrial dedusting device.
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.Application No. is 2014108100313 Chinese patents to disclose a kind of structure-improved
Industrial dust collector, which solves the problems, such as that existing dust-extraction unit occupied area is wide.The structure improved industry removes
Dirt device includes cabinet, and the bottom of body is fixed with taper ash bucket, and the bottom of taper ash bucket is equipped with flashboard, the side of cabinet be connected with into
Tracheae is fixed with shutter in cabinet, several cartridge filters are also hung in the cavity of cabinet, and cartridge filter runs through the top of cabinet,
Air inlet pipe and cartridge filter are located at the two sides of shutter, and the top of cabinet is equipped with escape pipe, and escape pipe is connected with cartridge filter,
There is mounting plate on the side wall of top of the box, blower is installed on mounting plate, blower is connected with escape pipe, and the top of cabinet is also set
There is blowing to be responsible for, the one end for being blown supervisor is connected with pulse valve, has on blowing supervisor and is blown branch correspondingly with cartridge filter
Pipe, the outlet for being blown branch pipe is located in cartridge filter.The structure improved industrial dust collector has structure simply and occupied area is small
The advantages of, but easy dust stratification on the dust-extraction unit partition, ash fall speed is general, and the pulse valve pressure loss is larger, hose
Easy dust stratification.
In consideration of it, the above-mentioned problems in the prior art, the present invention proposes a kind of by water spray raising ash fall speed
The industrial dust collector of degree, specifically has the beneficial effect that:
1. a kind of industrial dedusting of the present invention, a kind of industrial dedusting device of the present invention, with prior art phase
Than in the dust cleared up on filter cylinder, the present invention carries out rapid subsidence to the dust under cleaning by setting water injector, can mention
The speed of high dedusting；Simultaneously water injector spray water can filter cylinder cleaned, be conducive to improve filter cylinder filter effect；Into one
Step, water injector can also clear up partition and ash bucket, dust stratification can be effectively prevent, to realize self-cleaning of the invention
Function.
2. a kind of industrial dedusting device of the present invention, the present invention is realized by way of pulse gassing to grey on filter cylinder
The cleaning of dirt, compared with the existing technology, the present invention are equipped with gas heater in pressurized tank, and gas heater is used for empty to compression
Gas heating；The pressure in pressurized tank can be made to increase during heating simultaneously, the initial pressure of compressed air can be reduced, have one
Fixed energy-conserving action；Rapid draing can be carried out to the filter cylinder after cleaning by being blown the hot-air that branch pipe sprays, and shorten filter cylinder cleaning
Time；Meanwhile hot-air can be killed the mould being attached on filter cylinder by high temperature, to guarantee the clean of filter cylinder, be extended
The service life and raising filter effect of filter cylinder.
3. a kind of industrial dedusting device of the present invention, compared with prior art, the present invention pass through on blowing branch pipe
Stomata is set, to reduce the pressure loss of pulse valve.
Summary of the invention
In order to make up for the deficiencies of the prior art, the present invention provides a kind of industrial dedusting device, the water injector is removed
Dirt device and collection device mutual cooperation complete the filtering of dust and the cleaning work of filter cylinder jointly, improve the mistake of dust
Filter effect and the service life for extending filter cylinder, with good application prospect.
The technical solution adopted by the present invention to solve the technical problems is: a kind of industrial dedusting device, including shell, water spray
Device, dust-extraction unit, collection device, shutter, blower and controller, inlet channel is provided on the shell and exhaust is logical
Road, exhaust passage are connected with blower, and blower is equipped with traveling wheel, institute for extracting purified gas out below the shell
The top that water injector is mounted on shell is stated, water injector is used to settle the dust that collection device is cleared up and to cleaning plant
It is cleaned, top position, dust-extraction unit are described for removing the dust in gas inside housings for the dust-extraction unit installation
Collection device is used to collect the dust generated in storage dust removal process, and the shutter installation is inside housings close to inlet channel
Position, shutter bottom angled setting.
Preferably, the water injector includes water feeding tank, ejector pipe, spray head, solenoid valve and water pump, the water feeding tank peace
Above shell, water feeding tank is for supplying water, and water feeding tank is connected with spray head by ejector pipe, and the spray head is located at enclosure interior
And be mounted on above shell, spray head sprays water and is used to improve ash fall speed and clean the dust on collection device,
The solenoid valve is mounted on ejector pipe, and the water pump is mounted below water tank.
Preferably, the dust-extraction unit include pressurized tank, gas heater, blowing supervisor, pulse valve, be blown branch pipe and
Filter cylinder stores compressed air in the pressurized tank；The gas heater be located in pressurized tank and for compressed air into
Row heating；The blowing supervisor is connected by pipeline with pressurized tank, and pulse valve, blowing master are equipped between blowing supervisor and pressurized tank
It is provided on pipe and is blown branch pipe correspondingly with filter cylinder；Multiple stomatas are provided on the blowing branch pipe, blowing branch pipe protrudes into
The dust on filter cylinder clear up and filter cylinder is dried to cartridge interior.
Preferably, the collection device includes partition, ash bucket, water pipe and ash cellar, and the ash bucket is connected with the shell, ash
Bucket top is provided with partition, and equally distributed through-hole is provided on partition, is connected below ash bucket with water pipe, and the ash cellar is to move
Dynamic formula ash cellar, ash cellar lower section are provided with idler wheel, and the water for not crossing water pipe is provided in ash cellar.
The beneficial effects of the present invention are:
1. a kind of industrial dedusting of the present invention, a kind of industrial dedusting device of the present invention, with prior art phase
Than in the dust cleared up on filter cylinder, the present invention carries out rapid subsidence to the dust under cleaning by setting water injector, can mention
The speed of high dedusting；Simultaneously water injector spray water can filter cylinder cleaned, be conducive to improve filter cylinder filter effect；Into one
Step, water injector can also clear up partition and ash bucket, dust stratification can be effectively prevent, to realize self-cleaning of the invention
Function.
2. a kind of industrial dedusting device of the present invention, the present invention is realized by way of pulse gassing to grey on filter cylinder
The cleaning of dirt, compared with the existing technology, the present invention are equipped with gas heater in pressurized tank, and gas heater is used for empty to compression
Gas heating；The pressure in pressurized tank can be made to increase during heating simultaneously, the initial pressure of compressed air can be reduced, have one
Fixed energy-conserving action；Rapid draing can be carried out to the filter cylinder after cleaning by being blown the hot-air that branch pipe sprays, and shorten filter cylinder cleaning
Time；Meanwhile hot-air can be killed the mould being attached on filter cylinder by high temperature, to guarantee the clean of filter cylinder, be extended
The service life and raising filter effect of filter cylinder.
3. a kind of industrial dedusting device of the present invention, compared with prior art, the present invention pass through on blowing branch pipe
Stomata is set, to reduce the pressure loss of pulse valve.
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 the blowing branch pipe cross-sectional view in dust-extraction unit of the present invention；
In figure: including shell 1, water injector 2, water feeding tank 21, ejector pipe 22, spray head 23, solenoid valve 24, water pump 25, removing
Dirt device 3, pressurized tank 31, gas heater 32, blowing supervisor 33, pulse valve 34, blowing branch pipe 35, filter cylinder 36, collection device
4, partition 41, ash bucket 42, water pipe 43, ash cellar 44, shutter 5, blower 6.
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 depicted in figs. 1 and 2, a kind of industrial dedusting device, including shell 1, water injector 2, dust-extraction unit 3, collection dress
4, shutter 5, blower 6 and controller are set, inlet channel and exhaust passage, exhaust passage and blower 6 are provided on the shell 1
It is connected, blower 6 is equipped with traveling wheel for extracting purified gas out below the shell 1, the water injector 2 is installed
At the top of shell 1, water injector 2 is used to settle the dust that collection device 4 is cleared up and cleans to collection device 4,
The dust-extraction unit 3 is mounted on 1 inner upper position of shell, and dust-extraction unit 3 is used to remove the dust in gas, the collection dress
4 are set for collecting the dust generated in storage dust removal process, the shutter 5 is mounted on 1 inside of shell close to inlet channel
Position, the setting of 5 bottom angled of shutter.When the invention works, gas is flowed into out of shell 1 inlet channel, shutter 5 is right
Gas plays the role of water conservancy diversion, and dust-extraction unit 3 is dusted gas, and purified gas passes through shell 1 under the action of blower 6
Exhaust passage flow out shell 1, when being dusted to dust-extraction unit 3, water injector 2 can the dust lower to cleaning carry out quickly
It settles and simultaneously cleans the dust being sticked on 4 surface of collection device, collection device 4 is by the dust generated in dust removal process and water
It is collected storage.
The water injector 2 includes water feeding tank 21, ejector pipe 22, spray head 23, solenoid valve 24 and water pump 25, the water supply
Case 21 is mounted on 1 top of shell, and for supplying water, water feeding tank 21 is connected with spray head 23 by ejector pipe 22 water feeding tank 21, described
Spray head 23 is located at 1 inside of shell and is mounted on 1 top of shell, and spray head 23 sprays water for improving ash fall speed and to collection
Dust on device 4 is cleaned, and the solenoid valve 24 is mounted on ejector pipe 22, and the water pump 25 is mounted under water feeding tank 21
Side, when the invention works, water is flowed out out of water tank, under the action of water pump 25 and solenoid valve 24 in inflow ejector pipe 22,
The pressure of water increases under the action of ejector pipe 22, and water is sprayed from spray head 23, improves ash fall speed and to collection to realize
The function that device 4 cleans.
The dust-extraction unit 3 includes pressurized tank 31, gas heater 32, blowing supervisor 33, pulse valve 34, blowing branch pipe
35 and filter cylinder 36, compressed air is stored in the pressurized tank 31；The gas heater 32 is located in pressurized tank 31 and is used for
Compressed air is heated；The blowing supervisor 33 is connected by pipeline with pressurized tank 31, blowing supervisor 33 and pressurized tank 31
Between be equipped with pulse valve 34, blowing supervisor 33 on be provided with and filter cylinder 36 correspondingly blowing branch pipe 35；The blowing branch pipe
Multiple stomatas are provided on 35, blowing branch pipe 35, which is extend into inside filter cylinder 36, carries out cleaning to the dust on filter cylinder 36 and to filter
Cylinder 36 is dried.When the invention works, to the dedusting passed through, the gas in pressurized tank 31 heats filter cylinder 36 in gas
It is heated under the action of device 32, the gas after heating flows into blowing supervisor 33, through being blown branch pipe 35 under the action of pulse valve 34
Outflow carries out the function of clearing up and filter cylinder 36 is dried to the dust on filter cylinder 36 to realize.
The collection device 4 includes partition 41, ash bucket 42, water pipe 43 and ash cellar 44, and the ash bucket 42 is connected with shell 1
It connects, partition 41 is provided with above ash bucket 42, equally distributed through-hole is provided on partition 41,42 lower section of ash bucket is connected with water pipe 43
It connects, the ash cellar 44 is mobile ash cellar 44, is provided with idler wheel below ash cellar 44, is provided in ash cellar 44 and does not cross water pipe 43
Water.When the invention works, the water that dust and water injector 2 spray flows into ash bucket 42 by the through-hole on partition 41, dust
With water out of ash bucket 42 by water pipe 43 flow into ash cellar 44 in, when in ash cellar 44 dust and water reach to a certain degree when can be artificial
Cleaning.
When the invention works, gas is flowed into out of shell 1 inlet channel, shutter 5 plays the role of water conservancy diversion to gas,
For filter cylinder 36 to the dedusting passed through, purified gas flows out shell by the exhaust passage of shell 1 under the action of blower 6
1.When being dusted to filter cylinder 36, the gas in pressurized tank 31 is heated under the action of gas heater 32, after heating
Gas flows into blowing supervisor 33, flows out under the action of pulse valve 34 through blowing branch pipe 35, to realize to the ash on filter cylinder 36
Dirt carries out the function of clearing up and filter cylinder 36 is dried；Meanwhile water is flowed out out of water tank, in the work of water pump 25 and solenoid valve 24
With in lower inflow ejector pipe 22, under the action of ejector pipe 22, there is water certain impulse force to spray from spray head 23, mention to realize
High dust sinking speed and the function that collection device 4 is cleaned.The water that dust and water injector 2 spray is by logical on partition 41
Hole flows into ash bucket 42, flows into ash cellar 44 in dust and water ash bucket 42 by water pipe 43, when in ash cellar 44 dust and water arrive
Up to a certain degree when can manual cleaning.
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 (2)
1. a kind of industrial dedusting device, including shell (1), water injector (2), dust-extraction unit (3), collection device (4), shutter
(5), blower (6) and controller are provided with inlet channel and exhaust passage, exhaust passage and blower (6) phase on the shell (1)
Connection, blower (6) is for extracting purified gas out, it is characterised in that: traveling wheel is equipped with below the shell (1), it is described
Water injector (2) is mounted on the top of shell (1), and water injector (2) is used to settle dust that collection device (4) is cleared up simultaneously
Cleaning plant is cleaned, the dust-extraction unit (3) is mounted on shell (1) inner upper position, and dust-extraction unit (3) is for clear
Except the dust in gas, the collection device (4) is used to collect the dust generated in storage dust removal process, the shutter (5)
It is mounted on the internal position close to inlet channel of shell (1), the setting of shutter (5) bottom angled；
The water injector (2) includes water feeding tank (21), ejector pipe (22), spray head (23), solenoid valve (24) and water pump (25),
The water feeding tank (21) is mounted on above shell (1), and water feeding tank (21) is for supplying water, and water feeding tank (21) and spray head (23) are by drawing
It penetrates pipe (22) to be connected, the spray head (23) is located at shell (1) inside and is mounted on above shell (1), and spray head (23) sprays water
For improving ash fall speed and cleaning to the dust on collection device (4), the solenoid valve (24) is mounted on injection
It manages on (22), the water pump (25) is mounted below water feeding tank (21)；
The dust-extraction unit (3) includes pressurized tank (31), gas heater (32), blowing supervisor (33), pulse valve (34), spray
Branch pipe (35) and filter cylinder (36) are blown, stores compressed air in the pressurized tank (31)；The gas heater (32) is located at pressure
In power tank (31) and for being heated to compressed air；The blowing supervisor (33) is connected by pipeline with pressurized tank (31),
Pulse valve (34) are equipped between blowing supervisor (33) and pressurized tank (31), are provided with filter cylinder (36) one by one on blowing supervisor (33)
Corresponding blowing branch pipe (35)；Multiple stomatas are provided on the blowing branch pipe (35), blowing branch pipe (35) extend into filter cylinder
(36) internal that dust on filter cylinder (36) clear up and filter cylinder (36) is dried.
2. a kind of industrial dedusting device according to claim 1, it is characterised in that: the collection device (4) include every
Plate (41), ash bucket (42), water pipe (43) and ash cellar (44), the ash bucket (42) are connected with shell (1), set above ash bucket (42)
It is equipped with partition (41), equally distributed through-hole is provided on partition (41), is connected below ash bucket (42) with water pipe (43), it is described
Ash cellar (44) is mobile ash cellar (44), and idler wheel is provided with below ash cellar (44), is provided in ash cellar (44) and does not cross water pipe (43)
Water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516562.5A CN107158868B (en) | 2017-06-29 | 2017-06-29 | A kind of industrial dedusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516562.5A CN107158868B (en) | 2017-06-29 | 2017-06-29 | A kind of industrial dedusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107158868A CN107158868A (en) | 2017-09-15 |
| CN107158868B true CN107158868B (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710516562.5A Expired - Fee Related CN107158868B (en) | 2017-06-29 | 2017-06-29 | A kind of industrial dedusting device |
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| Country | Link |
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| CN (1) | CN107158868B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108096979A (en) * | 2018-01-16 | 2018-06-01 | 天津科创复兴科技咨询有限公司 | A kind of dust high efficiency spray processing unit |
| CN108301365A (en) * | 2018-03-15 | 2018-07-20 | 随州奔宝汽车制造有限公司 | A kind of road sweeper |
| CN108310832B (en) * | 2018-03-26 | 2020-10-02 | 湖南卓达环保有限公司 | Industrial sewage filtering and purifying equipment |
| CN109078398B (en) * | 2018-09-03 | 2021-01-15 | 安徽茗达专用汽车制造有限公司 | Industrial bag-type dust collector |
| CN109078438B (en) * | 2018-09-03 | 2020-10-30 | 浙江恒辉建材有限公司 | Method for improving air quality of brick making workshop of brick and tile factory |
| CN109395518A (en) * | 2018-12-03 | 2019-03-01 | 湖南省金润碲业有限公司 | Soot processing device is used in a kind of granulation of metal |
| CN112316571B (en) * | 2020-09-10 | 2022-03-15 | 江苏吉能达环境能源科技有限公司 | Dust remover with blowback device for cement production |
| CN116735274B (en) * | 2023-06-14 | 2024-08-16 | 内蒙古北科交大机器人有限公司 | Acid extraction sampling device and tank car cover assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201735286U (en) * | 2010-07-13 | 2011-02-09 | 科林环保装备股份有限公司 | High-temperature dust remover with metal filter cylinders |
| CN202052432U (en) * | 2011-05-09 | 2011-11-30 | 四川省森环科技有限公司 | Spraying and blowing air self heating device for bag-type dust remover |
| CN204051272U (en) * | 2014-08-29 | 2014-12-31 | 张家港市锦明环保工程装备有限公司 | A kind of high temperature cloth exhaust dust device with bag |
| CN106422586B (en) * | 2014-12-23 | 2018-10-30 | 浙江洁宇环保装备科技有限公司 | A kind of industrial dust collector with air inlet pipe |
| CN105709518B (en) * | 2016-03-07 | 2019-01-25 | 广西海之源环保科技有限公司 | Automatic releasing, purging and filter bag cleaning device for filter bag dust remover |
| CN106390624A (en) * | 2016-10-27 | 2017-02-15 | 林志城 | Automatic cleaning dust remover |
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2017
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Effective date of registration: 20190515 Address after: 550000 No.6, 3rd floor, 76 Shachong South Road, Nanming District, Guiyang City, Guizhou Province [Shachong Community] Applicant after: GUIZHOU NANJIAN ENVIRONMENTAL PROTECTION ENERGY TECHNOLOGY CO.,LTD. Address before: Room 202, Building A, Venture Center, Yangzhuang Township, Longqiao District, Suzhou City, Anhui Province Applicant before: SUZHOU DONGYU ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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