CN108585408A - Single axle vacuum disc dryer - Google Patents
Single axle vacuum disc dryer Download PDFInfo
- Publication number
- CN108585408A CN108585408A CN201810209378.0A CN201810209378A CN108585408A CN 108585408 A CN108585408 A CN 108585408A CN 201810209378 A CN201810209378 A CN 201810209378A CN 108585408 A CN108585408 A CN 108585408A
- Authority
- CN
- China
- Prior art keywords
- disk
- scraper
- machine barrel
- montant
- dry
- 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.)
- Pending
Links
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 13
- 239000003351 stiffener Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of single axle vacuum disc dryer, including machine barrel, it is horizontally arranged with hollow rotating shaft in machine barrel, several drying disks are fixedly installed on hollow rotating shaft, hollow rotating shaft connects external heat source；Scraper area is formed between two neighboring dry disk；The machine barrel upper end opens up installing port, and dismountable scraper device is sealedly connected on installing port, and the scraper device includes several scrapers, and the scraper is inserted into scraper area, and scraper both sides blade coordinates with the drying disk dry face of scraper area both sides respectively.A kind of single axle vacuum disc dryer is provided, the mounting means of scraper in drying machine is thoroughly changed, scraper part does the scraper device of an entirety, whole dismounting may be implemented on machine barrel so that the repair of scraper installing and dismounting is very convenient.
Description
Technical field
The present invention relates to technical field of drying more particularly to a kind of single axle vacuum disc dryers.
Background technology
Current single shaft (vacuum) disc dryer is primarily present problems with：
1, the scraper plate being arranged in drying machine machine barrel is directly to be weldingly fixed on machine tube inner wall, and the dismounting of scraper plate is tieed up
Inconvenience is repaiied, and doctor position can not be adjusted, under scraper efficiency is relatively low.
2, former doctor blade holder is that single side reinforces blade type, problem：Gap is big, and disk is scraped unclear；Intensity is low, single fulcrum.
4, in the drying disk used in previous drying machine, disc chuck is reinforced using molding, interior distribution reinforcing rib
Muscle offers perforation, reinforcing rib 20 goes out from perforation, then welds again, in this way when welding on two disks in left and right
Defect is caused by connection：10 both sides dry face of disk is more crude, out-of-flatness, and there are leak source, disk 10 and materials
It is serious to restrict 10 service life of disk when contact surface brings abrasion larger.As shown in fig. 1, the side of traditional drying disk 10
Scheme, the dot in figure is solder joint of the reinforcing rib 20 on disk side.
Invention content
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide a kind of single axle vacuum disk drying
Machine solves the defect of previous drying machine scraper inefficiency.
The technical solution adopted by the present invention to solve the technical problems is：A kind of single axle vacuum disc dryer, including machine
Tin, it is horizontally arranged with hollow rotating shaft in the machine barrel, several drying disks, Ge Gegan are fixedly installed on the hollow rotating shaft
Dry disk inner cavity is connected to hollow rotating shaft, and the hollow rotating shaft connects external heat source；
The dry disk both sides are dry materials face, and scraper area is formed between two neighboring dry disk；
The machine barrel upper end opens up installing port, and dismountable scraper device is sealedly connected on the installing port, described to scrape
Knife system includes several scrapers, and the scraper is inserted into scraper area, scraper both sides blade respectively with scraper area both sides
Dry disk dry face cooperation.
Further, the scraper device includes cover board, cross bar, several montants and several scrapers；
The cover plate for sealing is connected on the installing port of machine barrel, and the cross bar both ends are fixed and are erected on cover board, each perpendicular
Bar upper end is connect with cross bar respectively, and the montant lower end is stretched into across cover board in machine barrel, and the montant is matched with sealing before cover board
It closes, the montant lower end is fixedly connected with scraper.
Further, the bindiny mechanism between the montant upper end and cross bar is：Rod aperture is offered on the cross bar, it is described
Montant upper end forms thread segment, and the montant upper end passes through from cross bar rod aperture, be provided on the montant thread segment top nut and
Lower nut, between top nut and lower nut, the top nut screws with lower nut and connects montant with cross bar the cross bar
Together.
Further, the dry disk includes the left disk of cone-shaped and right disk, is offered among the left disk and right disk
Shaft is perforated, and the left disk is mutually sealedly and fixedly connected with right disk outer circumferential edge, and disk chamber, institute are formed between the left disk and right disk inside
Disk chamber is stated to be connected to hollow rotating shaft, the disk intracavitary is provided with several stiffener plates, the stiffener plate both sides respectively with a left side
Disk is fixedly connected with right disk medial surface.
Further, the machine barrel lower end is fixedly installed multiple crushed aggregates devices, and the crushed aggregates device includes motor and broken
Expect that blade, the motor are fixed on machine barrel lower end, the machine shaft connects particle blade after passing through machine barrel.
Further, feed inlet is arranged in machine barrel side upper end, and discharge port is arranged in machine barrel other end lower end；
Sticky area, stagnant zone and granulomere are divided into according to the form of material by feed inlet to discharge port in the machine barrel；
It is respectively arranged with push broach on each dry disk；
Push broach on each dry disk in sticky area includes flat cutter and anti-push broach；The each dry disk in stagnant zone
On push broach include flat cutter and anti-push broach；Push broach on each dry disk in granulomere includes flat cutter.
The beneficial effects of the invention are as follows：A kind of single axle vacuum disc dryer is provided, scraper in drying machine is thoroughly changed
The scraper device of an entirety is done in mounting means, scraper part, and whole dismounting may be implemented on machine barrel so that scraper is installed
Detachable maintaining is very convenient.
The montant of installation scraper plate can be adjusted in cross bar upper and lower position, so as to adjust scraper edge and disk dry face
Between scraper gap, promote scraper efficiency and quality.
Scraper has two-sided blade, is directed to sludge etc. with sticking material, repeats to clear up using two-sided left and right, make disk
Face cleaning mixing is more effective, scraper or so work, and stability is also more preferable.
Stiffener plate is arranged inside dry disk, avoids opening up perforation in disk side, and dry face is made to keep smooth bright and clean,
Reduce dry disk leak source.
Description of the drawings
The following further describes the present invention with reference to the drawings.
Fig. 1 traditional drying disk schematic diagrames；
Fig. 2 is drying machine schematic diagram of the present invention；
Fig. 3 is connection figure between montant and scraper；
Fig. 4 is stiffener plate and the structure chart in dry disk；
Fig. 5 is the schematic diagram that each push broach is mounted on dry disk；
Wherein, 1, machine barrel, 2, hollow rotating shaft, 3, dry disk, 31, stiffener plate, 32, push broach, 4, cover board, 5, cross bar,
6, montant, 7, scraper, 8, crushed aggregates device.
Specific implementation mode
Presently in connection with specific embodiment, the present invention is further illustrated.These attached drawings are simplified schematic diagram only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Figures 2 to 5, a kind of single axle vacuum disc dryer, including machine barrel 1 are horizontally arranged in machine barrel 1 hollow
Shaft 2 is fixedly installed several drying disks 3 on hollow rotating shaft 2, and each 3 inner cavity of dry disk is connected to hollow rotating shaft 2,
Hollow rotating shaft 2 connects external heat source；3 both sides of dry disk are dry materials face, and scraper is formed between two neighboring dry disk 3
Area；1 upper end of machine barrel opens up installing port, and dismountable scraper device is sealedly connected on installing port, and scraper device includes several
Scraper 7, scraper 7 are inserted into scraper area, and 7 both sides blade of scraper coordinates with 3 dry face of drying disk of scraper area both sides respectively.
Scraper area is in isosceles trapezoidal structure, and scraper 7 also can corresponding isosceles trapezoid shape.
Scraper device includes cover board 4, cross bar 5, several montants 6 and several scrapers 7；Cover board 4 is sealedly connected on machine
On the installing port of cylinder 1,5 both ends of cross bar are fixed and are erected on cover board 4, and 6 upper end of each montant is connect with cross bar 5 respectively, under montant 6
End is stretched into across cover board 4 in machine barrel 1, and montant 6 coordinates with sealing before cover board 4, and 6 lower end of montant is fixedly connected with scraper 7.
The sealing of cover board 4 is fixed on 1 upper end of machine barrel by cover board 4 by several bolt fitted seal circles.
Sealing ring is set between montant 6 and cover board 4, makes to keep sealing between montant 6 and cover board 4.
Bindiny mechanism between 6 upper end of montant and cross bar 5 is：Rod aperture is offered on cross bar 5,6 upper end of montant forms screw thread
Section, 6 upper end of montant are passed through from 5 rod aperture of cross bar, top nut and lower nut are provided on 6 thread segment of montant, cross bar 5 is located at top nut
Between lower nut, top nut and lower nut screw and montant 6 and cross bar 5 link together.By adjusting two nuts up and down
Position on 6 thread segment of montant to adjust height of the montant 6 on machine barrel 1, and then controls 7 both sides of scraper and dry face
Between scraper gap.
Dry disk 3 includes the left disk of cone-shaped and right disk, and shaft perforation, left disk and the right side are offered among left disk and right disk
Disk outer circumferential edge is mutually sealedly and fixedly connected, and forms disk chamber between left disk and right disk inside, disk chamber is connected to hollow rotating shaft 2, disk intracavitary
Several stiffener plates 31 are provided with, 31 both sides of stiffener plate are fixedly connected with left disk and right disk medial surface respectively.Ensure in this way
3 both sides dry face of dry disk is bright and clean, without solder joint, reduces leak source.
1 lower end of machine barrel is fixedly installed multiple crushed aggregates devices 8, and crushed aggregates device 8 includes motor and particle blade, and motor is fixed
In 1 lower end of machine barrel, machine shaft connects particle blade after passing through machine barrel 1.It states crushed aggregates device 8 to shred the material of bottom, be convenient for
Drying efficiency is improved, final dry moisture is reduced.
Endfeed on 1 side of machine barrel, 1 other side lower end of machine barrel discharge, and expeller is respectively arranged on dry disk 3, empty
When heart shaft 2 drives dry disk 3 to rotate, push material to discharge end from input end, the material for having just enter into machine barrel 1 compares
Humidity, then slowly push to constantly be dried during discharging.
Feed inlet is arranged in 1 side upper end of machine barrel, and discharge port is arranged in 1 other end lower end of machine barrel；By feed inlet to going out in machine barrel 1
Material mouth is divided into sticky area, stagnant zone and granulomere according to the form of material；As shown in figure 5, being set respectively on each dry disk 3
It is equipped with push broach 32；Push broach 32 on each dry disk in sticky area 3 includes flat cutter and anti-push broach, and the quantity of flat cutter and anti-push broach is each
Account for half；Sticky area's material water ratio is higher, and volume is larger.Sticky section of sludge temperature is continuously improved, evaporation rate fast lifting.
For this section of sludge based on stirring, exchange heat.This stage conveys disc setting push broach 32 and selects flat cutter and anti-push broach, improves broken
Rate reduces diffusion difficulty, improves heat transfer effect.
Push broach 32 on each dry disk in stagnant zone 3 includes flat cutter and anti-push broach, and the quantity of flat cutter and anti-push broach respectively accounts for
Half；Dead zone sludge Free water, absorption water have evaporated totally substantially, and cell body starts to rupture in sludge, tissue fluid exudation, sludge
Viscosity constantly increases, and heat transfer efficiency declines, and evaporation rate reduces.For this stage, host is based on plug-flow, dispersion.
Push broach 32 on each dry disk in granulomere 3 includes flat cutter.This stage sludge occurs with graininess, dispersibility
Well, but evaporation rate is extremely low.In order to ensure that the desiccation effect of discharging, this section are volatilized escaping gas dangerous with the residence time
To the greatest extent.This section selects flat cutter, improves residence time and stirring.Equipped with striker plate, overflow discharging in side ensures desiccation effect.
The advantages of drying machine of the present invention, is that 7 part of scraper uses global design, and scraper 7 is integrally torn open on machine barrel 1
Dress, it is very convenient；And 7 operation gap of scraper realizes adjustable, promotion scraper quality.
Built in the stiffener plate 31 of dry disk 3, avoids forming short-tempered solder joint in both sides dry face, solder joint is avoided to become
Leak source, the security performance and service life of lifting means.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of single axle vacuum disc dryer, characterized in that including machine barrel (1), be horizontally arranged in the machine barrel (1) hollow
Shaft (2), is fixedly installed several drying disks (3) on the hollow rotating shaft (2), each dry disk (3) inner cavity with it is empty
Heart shaft (2) is connected to, and the hollow rotating shaft (2) connects external heat source；
Dry disk (3) both sides are dry materials face, and scraper area is formed between two neighboring dry disk (3)；
Machine barrel (1) upper end opens up installing port, and dismountable scraper device, the scraper are sealedly connected on the installing port
Device includes several scrapers (7), and the scraper (7) is inserted into scraper area, scraper (7) both sides blade respectively with scraper area
Drying disk (3) dry face of both sides coordinates.
2. single axle vacuum disc dryer according to claim 1, characterized in that the scraper device include cover board (4),
Cross bar (5), several montants (6) and several scrapers (7)；
The cover board (4) is sealedly connected on the installing port of machine barrel (1), and cross bar (5) both ends are fixed and are erected at cover board (4)
On, each montant (6) upper end is connect with cross bar (5) respectively, and montant (6) lower end is stretched into across cover board (4) in machine barrel (1),
The montant (6) coordinates with sealing before cover board (4), and montant (6) lower end is fixedly connected with scraper (7).
3. single axle vacuum disc dryer according to claim 2, characterized in that montant (6) upper end and cross bar (5)
Between bindiny mechanism be：Rod aperture is offered on the cross bar (5), montant (6) upper end forms thread segment, the montant
(6) upper end is passed through from cross bar (5) rod aperture, and top nut and lower nut, the cross bar (5) are provided on montant (6) thread segment
Between top nut and lower nut, the top nut and lower nut screw and montant (6) and cross bar (5) link together.
4. single axle vacuum disc dryer according to claim 1, characterized in that the dry disk (3) includes taper
The left disk and right disk of shape, shaft perforation is offered among the left disk and right disk, and the left disk mutually seals solid with right disk outer circumferential edge
Fixed connection forms disk chamber between the left disk and right disk inside, and the disk chamber is connected to hollow rotating shaft (2), and the disk intracavitary is set
Several stiffener plates (31) are equipped with, stiffener plate (31) both sides are fixedly connected with left disk and right disk medial surface respectively.
5. single axle vacuum disc dryer according to claim 1, characterized in that machine barrel (1) the lower end fixed setting
It includes motor and particle blade to have multiple crushed aggregates devices (8), the crushed aggregates device (8), and the motor is fixed under machine barrel (1)
End, the machine shaft connect particle blade afterwards across machine barrel (1).
6. single axle vacuum disc dryer according to claim 2, characterized in that machine barrel (1) the side upper end setting
Discharge port is arranged in feed inlet, machine barrel (1) other end lower end；
Sticky area, stagnant zone and granulomere are divided into according to the form of material by feed inlet to discharge port in the machine barrel (1)；Respectively
It is respectively arranged with push broach (32) on a dry disk (3)；
Push broach (32) on each dry disk (3) in sticky area includes flat cutter and anti-push broach；The each drying in stagnant zone
Push broach (32) on disk (3) includes flat cutter and anti-push broach；Push broach (32) on each dry disk (3) in granulomere includes
Flat cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209378.0A CN108585408A (en) | 2018-03-14 | 2018-03-14 | Single axle vacuum disc dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209378.0A CN108585408A (en) | 2018-03-14 | 2018-03-14 | Single axle vacuum disc dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108585408A true CN108585408A (en) | 2018-09-28 |
Family
ID=63626466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810209378.0A Pending CN108585408A (en) | 2018-03-14 | 2018-03-14 | Single axle vacuum disc dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108585408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925096A (en) * | 2020-10-09 | 2020-11-13 | 青岛诺亚方舟环境工程有限公司潍坊分公司 | Municipal sludge vacuum low-temperature continuous drying method and equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213969Y (en) * | 1994-12-29 | 1995-11-29 | 李晓波 | Disk drying machine stoving tray with plate type reinforcing steel |
| CN2522810Y (en) * | 2002-02-10 | 2002-11-27 | 过志昌 | Efficient internal-disk heating vacuum drying machine |
| CN202354320U (en) * | 2011-12-12 | 2012-08-01 | 山东凯斯达机械制造有限公司 | Horizontal circular disc continuous drying machine |
| CN202692664U (en) * | 2012-03-24 | 2013-01-23 | 东台市食品机械厂有限公司 | Combined scraper of rotary drum drying device and two-level regulating and controlling device of combined scraper |
| JP2015025603A (en) * | 2013-07-25 | 2015-02-05 | 三菱マテリアルテクノ株式会社 | Method for suppressing sticking of object to be processed, mechanism for suppressing sticking of object to be processed, and disk type-processing device |
| KR101693580B1 (en) * | 2016-04-25 | 2017-01-06 | 주식회사 코벡 | Evaporation concentration and drying equipment using disk type heat plate |
| CN208700866U (en) * | 2018-03-14 | 2019-04-05 | 安徽远海科技有限公司 | Single axle vacuum disc dryer |
-
2018
- 2018-03-14 CN CN201810209378.0A patent/CN108585408A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213969Y (en) * | 1994-12-29 | 1995-11-29 | 李晓波 | Disk drying machine stoving tray with plate type reinforcing steel |
| CN2522810Y (en) * | 2002-02-10 | 2002-11-27 | 过志昌 | Efficient internal-disk heating vacuum drying machine |
| CN202354320U (en) * | 2011-12-12 | 2012-08-01 | 山东凯斯达机械制造有限公司 | Horizontal circular disc continuous drying machine |
| CN202692664U (en) * | 2012-03-24 | 2013-01-23 | 东台市食品机械厂有限公司 | Combined scraper of rotary drum drying device and two-level regulating and controlling device of combined scraper |
| JP2015025603A (en) * | 2013-07-25 | 2015-02-05 | 三菱マテリアルテクノ株式会社 | Method for suppressing sticking of object to be processed, mechanism for suppressing sticking of object to be processed, and disk type-processing device |
| KR101693580B1 (en) * | 2016-04-25 | 2017-01-06 | 주식회사 코벡 | Evaporation concentration and drying equipment using disk type heat plate |
| CN208700866U (en) * | 2018-03-14 | 2019-04-05 | 安徽远海科技有限公司 | Single axle vacuum disc dryer |
Non-Patent Citations (1)
| Title |
|---|
| 赖海辉等: "《机械岩石破碎学》", 中南工业大学出版社, pages: 306 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925096A (en) * | 2020-10-09 | 2020-11-13 | 青岛诺亚方舟环境工程有限公司潍坊分公司 | Municipal sludge vacuum low-temperature continuous drying method and equipment |
| CN111925096B (en) * | 2020-10-09 | 2020-12-11 | 青岛诺亚方舟环境工程有限公司潍坊分公司 | Municipal sludge vacuum low-temperature continuous drying method and equipment |
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| TA01 | Transfer of patent application right | ||
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Effective date of registration: 20180930 Address after: 243131 intersection of Wang Mao road and Chang Dian Road, Xinshi Industrial Park, Ma'anshan, Anhui. Applicant after: ANHUI YUANHAI TECHNOLOGY Co.,Ltd. Address before: 213000 Jiangsu Jinling environmental protection equipment Co., Ltd., 501 Hekou Road, three Hekou, Changzhou, Jiangsu Applicant before: JIANGSU JINLING ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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Address after: 243131 intersection of Wang Mao road and Chang Dian Road, Xinshi Industrial Park, Ma'anshan, Anhui. Applicant after: Anhui Ocean Environmental Protection Technology Co.,Ltd. Address before: 243131 intersection of Wang Mao road and Chang Dian Road, Xinshi Industrial Park, Ma'anshan, Anhui. Applicant before: ANHUI YUANHAI TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200923 Address after: Room 8709, building 4, Guangyi science and technology, 128 Jiangjun Avenue, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Applicant after: Jiangsu Jinling Environmental Protection Technology Co.,Ltd. Address before: 243131 intersection of Wang Mao road and Chang Dian Road, Xinshi Industrial Park, Ma'anshan, Anhui. Applicant before: Anhui Ocean Environmental Protection Technology Co.,Ltd. |
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Application publication date: 20180928 |