CN206720959U - A kind of oxygenation device used for wastewater treatment - Google Patents
A kind of oxygenation device used for wastewater treatment Download PDFInfo
- Publication number
- CN206720959U CN206720959U CN201720471098.8U CN201720471098U CN206720959U CN 206720959 U CN206720959 U CN 206720959U CN 201720471098 U CN201720471098 U CN 201720471098U CN 206720959 U CN206720959 U CN 206720959U
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- CN
- China
- Prior art keywords
- waste water
- water treatment
- treatment box
- motor
- fixedly connected
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- 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
Links
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 64
- 238000006213 oxygenation reaction Methods 0.000 title claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000356 contaminant Substances 0.000 claims abstract description 15
- 230000000740 bleeding effect Effects 0.000 claims abstract description 8
- 238000005273 aeration Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 3
- 229910052799 carbon Inorganic materials 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 230000007096 poisonous effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Abstract
The utility model discloses a kind of oxygenation device used for wastewater treatment, including waste water treatment box, dirt inlet is offered on the left of the sewage disposal box top, surface on the left of the waste water treatment box is fixedly connected with controller, the bottom of the waste water treatment box right lateral surface is provided through outlet pipe, outlet valve is provided with the top of the outlet pipe, blow-off pipe is provided with the top of the outlet valve.The utility model is by setting the second motor, the second rotating shaft, wheel disc, belt, air blower, flexible pipe, pressure gauge, controller, the first motor, first rotating shaft, blade, contaminant filter layer, activated carbon filter plate, ultraviolet plate, blow-off pipe, blowoff valve, air accumulator, pipeline, air bleeding valve and the mutual cooperation for being aerated post, the advantages of oxygenation is carried out to sewage while sewage is purified is reached, solve the problems, such as that existing apparatus for treating sewage is unable to oxygenation, by carrying out oxygenation to sewage while sewage is purified.
Description
Technical field
Technical field of sewage is the utility model is related to, specially a kind of oxygenation device used for wastewater treatment.
Background technology
Sewage, it is often referred to discharge water necessarily polluted, from life and production.Sewage mainly has sanitary sewage, work
Industry waste water and early-stage rainwater.The ill pathogen contaminant of major pollutants, oxygen consumption pollutant, plant nutrient and the poisonous dirt of sewage
Contaminate thing etc..
Living and can produce substantial amounts of sewage in production process, existing apparatus for treating sewage is during waste water is handled
Oxygenation can not be carried out to sewage simultaneously, make sewage after precipitation, sterilization, sterilization, need to also carried out oxygenation, may result at sewage
Process is cumbersome during reason, so as to add the time needed for sewage disposal, reduces the efficiency of sewage disposal.
Utility model content
The purpose of this utility model is to provide a kind of oxygenation device used for wastewater treatment possess while sewage is purified to dirt
Water carries out the advantages of oxygenation, solves existing apparatus for treating sewage and can not while sewage be increased during waste water is handled
The problem of oxygen.
To achieve the above object, the utility model provides following technical scheme：A kind of oxygenation device used for wastewater treatment, including dirt
Water treatment case, offers dirt inlet on the left of the sewage disposal box top, and the surface on the left of the waste water treatment box, which is fixed, to be connected
Controller is connected to, the bottom of the waste water treatment box right lateral surface is provided through outlet pipe, and the top of the outlet pipe is set
There is outlet valve, blow-off pipe is provided with the top of the outlet valve, and one end of blow-off pipe connects with the inner chamber of waste water treatment box, institute
State and blowoff valve is provided with the top of blow-off pipe, the first motor, first electricity are provided with the top of the sewage disposal box cavity
The output end of machine is fixedly connected with first rotating shaft, and the surface of the first rotating shaft is arranged with blade, and the both sides of the blade are all provided with
Magnet is equipped with, and side of the magnet away from blade is fixedly connected with the inner chamber of waste water treatment box, the bottom of the blade is provided with
Contaminant filter layer, and the both ends of contaminant filter layer are fixedly connected with the inner chamber of waste water treatment box, the bottom of the contaminant filter layer
Activated carbon filter plate is provided with, and the both ends of activated carbon filter plate are fixedly connected with the inner chamber of waste water treatment box, the activated carbon filter plate
Bottom be provided with ultraviolet plate, and the both ends of ultraviolet plate are fixedly connected with the inner chamber of waste water treatment box, the ultraviolet plate
Bottom be provided with pipeline, and one end of pipeline through waste water treatment box and extends to the left side of waste water treatment box, the pipeline
Top be fixedly connected with aeration post, and the bottom for being aerated post connects with the inner chamber of pipeline, is set on the left of the waste water treatment box
The second motor is equipped with, the output end of second motor is fixedly connected with the second rotating shaft, and second rotating shaft is away from the second motor
One end be socketed with wheel disc, the surface of the wheel disc is arranged with belt, and the one end of the belt away from wheel disc is connected with drum
Blower fan, flexible pipe is communicated with the right side of the air blower, pressure gauge, and one end of pressure gauge are fixedly connected with the top of the flexible pipe
Connected with the inner chamber of flexible pipe, air accumulator, the flexible pipe one end and gas storage away from air blower are provided with the right side of the air blower
Bottom connection on the left of tank, the one end of the pipeline away from waste water treatment box connect with the right side of air accumulator, the top of the pipeline
Portion is provided with air bleeding valve, and the controller and the first motor, the second motor and ultraviolet plate are electrically connected with.
Preferably, the bottom of second motor is fixedly connected with base, and the second motor is located at the left side of air blower.
Preferably, the first electric motor protecting shell, and the first motor position are fixedly connected with the top of the sewage disposal box cavity
In the inner chamber of the first electric motor protecting shell.
Preferably, be fixedly connected with fixed block at the top of the first electric motor protecting shell inner chamber, and the bottom of fixed block with
It is fixedly connected at the top of first motor.
Preferably, the corner of the waste water treatment box bottom has been fixedly connected with slipmat, and four slipmat are in equidistant
Distribution.
Compared with prior art, the beneficial effects of the utility model are as follows：
1st, the utility model is by setting the second motor, the second rotating shaft, wheel disc, belt, air blower, flexible pipe, pressure gauge, control
Device processed, the first motor, first rotating shaft, blade, contaminant filter layer, activated carbon filter plate, ultraviolet plate, blow-off pipe, blowoff valve, gas storage
Tank, pipeline, air bleeding valve and the mutual cooperation for being aerated post, have reached the advantages of carrying out oxygenation to sewage while sewage is purified,
Solve the problems, such as that existing apparatus for treating sewage can not carry out oxygenation to sewage simultaneously during waste water is handled, by net
Oxygenation is carried out to sewage while changing sewage, the time that purification sewage originally carries out oxygenation again afterwards has been saved, has improved purification
Sewage is in the efficiency to sewage oxygenation, suitable all-round popularization.
2nd, the utility model can play fixed effect by base to the second motor and air blower, make the second motor and
Air blower is more stable when in use, avoids the second motor and air blower rocks when in use, add the second motor
Stability when being used with air blower, by the first electric motor protecting shell, protection can be played a part of to the first motor, make the first electricity
Machine is safer when using, and is intake when avoiding the first motor use, security when the first motor uses is improved, by solid
Determine block, fixation can be played to the first motor, make the first motor more stable when working, go out when avoiding the work of the first motor
Now rock, improve the security of the first motor when in use, by slipmat, fixed work can be played to waste water treatment box
With, it is more stable when the waste water treatment box is worked, avoid waste water treatment box using when be in the presence of rocking, improve sewage
Stability when treatment box uses.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model the second motor side view.
In figure：1 waste water treatment box, 2 dirt inlets, 3 first electric motor protecting shells, 4 first motors, 5 fixed blocks, 6 first rotating shafts,
7 blades, 8 magnet, 9 controllers, 10 contaminant filter layers, 11 activated carbon filter plates, 12 ultraviolet plates, 13 pipelines, 14 aeration posts, 15 rows
Dirty pipe, 16 blowoff valves, 17 outlet pipes, 18 outlet valves, 19 air bleeding valves, 20 air accumulators, 21 flexible pipes, 22 pressure gauges, 23 air blowers, 24
Belt, 25 second motors, 26 bases, 27 second rotating shafts, 28 wheel discs, 29 slipmat.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, the scope of the common utility model protection in this area.
Refer to Fig. 1-2, a kind of oxygenation device used for wastewater treatment, including waste water treatment box 1, the top of the inner chamber of waste water treatment box 1
Portion is fixedly connected with the first electric motor protecting shell 3, and the first motor 4 is located at the inner chamber of the first electric motor protecting shell 3, passes through the first motor
Containment vessel 3, protection can be played a part of to the first motor 4, it is safer when using the first motor 4, avoid the first motor 4
Intake during use, improve security when the first motor 4 uses, the first electric motor protecting shell 3 is fixedly connected with the top of inner chamber
Fixed block 5, and the bottom of fixed block 5 is fixedly connected with the top of the first motor 4, and by fixed block 5, the first motor 4 can be risen
To fixation, make the first motor 4 more stable when working, rocked when avoiding the work of the first motor 4, improve first
The security of motor 4 when in use, the corner of the bottom of waste water treatment box 1 have been fixedly connected with slipmat 29, and four slipmat
29 in being equally spaced, and by slipmat 29, fixed effect can be played to waste water treatment box 1, when the waste water treatment box 1 is worked more
Add stabilization, avoid when waste water treatment box 1 uses and be in the presence of rocking, improve stability when waste water treatment box 1 uses,
The left side at the top of waste water treatment box 1 offers dirt inlet 2, and the surface in the left side of waste water treatment box 1 is fixedly connected with controller 9, dirty
The bottom of the right lateral surface of water treatment case 1 is provided through outlet pipe 17, and the top of outlet pipe 17 is provided with outlet valve 18, outlet valve
18 top is provided with blow-off pipe 15, and one end of blow-off pipe 15 connects with the inner chamber of waste water treatment box 1, the top of blow-off pipe 15
Blowoff valve 16 is provided with, the first motor 4 is provided with the top of the inner chamber of waste water treatment box 1, the output end of the first motor 4 is fixedly connected
There is first rotating shaft 6, the surface of first rotating shaft 6 is arranged with blade 7, and blade 7 when rotated, due to the effect of centrifugal force, can make one
A little metals and large-scale distribution of particles slide in surrounding, and along the inner chamber of waste water treatment box 1, and the both sides of blade 7 are provided with magnet
8, the metal slided can be adsorbed in the surface of magnet 8, prevent heavy metal pollution, and at side of the magnet 8 away from blade 7 and sewage
The inner chamber of reason case 1 is fixedly connected, and the bottom of blade 7 is provided with contaminant filter layer 10, can be filtered out by contaminant filter layer 10
Big particle, prevent from containing large-scale particle in sewage, and the both ends of contaminant filter layer 10 and the inner chamber of waste water treatment box 1 are fixed and connected
Connect, the bottom of contaminant filter layer 10 is provided with activated carbon filter plate 11, and activated carbon filter plate 11 can remove poisonous substance in decontaminated water and miscellaneous
Matter, and the both ends of activated carbon filter plate 11 are fixedly connected with the inner chamber of waste water treatment box 1, the bottom of activated carbon filter plate 11 is provided with purple
Outside line plate 12, ultraviolet plate 12 are sterilized to sewage, and the both ends of ultraviolet plate 12 and the inner chamber of waste water treatment box 1 are fixed and connected
Connect, the bottom of ultraviolet plate 12 is provided with pipeline 13, and one end of pipeline 13 through waste water treatment box 1 and extends to sewage disposal
The left side of case 1, the top of pipeline 13 is fixedly connected with aeration post 14, and the bottom for being aerated post 14 connects with the inner chamber of pipeline 13,
The left side of waste water treatment box 1 is provided with the second motor 25, and the bottom of the second motor 25 is fixedly connected with base 26, and the second motor
25 are located at the left side of air blower 23, by base 26, can play fixed effect to the second motor 25 and air blower 23, make second
Motor 25 and air blower 23 are more stable when in use, avoid the second motor 25 and air blower 23 rocks when in use,
Stability when the second motor 25 and the use of air blower 23 is added, the output end of the second motor 25 is fixedly connected with the second rotating shaft
27, the one end of the second rotating shaft 27 away from the second motor 25 is socketed with wheel disc 28, and the surface of wheel disc 28 is arranged with belt 24, belt 24
One end away from wheel disc 28 is connected with air blower 23, and the right side of air blower 23 is communicated with flexible pipe 21, and the top of flexible pipe 21 is consolidated
Surely pressure gauge 22 is connected with, and one end of pressure gauge 22 connects with the inner chamber of flexible pipe 21, the right side of air blower 23 is provided with gas storage
Tank 20, the one end of flexible pipe 21 away from air blower 23 connect with the bottom in the left side of air accumulator 20, and pipeline 13 is away from waste water treatment box 1
One end connects with the right side of air accumulator 20, and the top of pipeline 13 is provided with air bleeding valve 19, the 4, second electricity of motor of controller 9 and first
Machine 25 and ultraviolet plate 12 are electrically connected with.
In use, the first motor 4, the second motor 25 and ultraviolet plate 12 is worked by controller 9 first, the first motor
4 are rotated by first rotating shaft 6 with movable vane piece 7, and sewage, which enters fashionable metal, can be adsorbed in the surface of magnet 8, and other impurities can be piled up in
The surface of contaminant filter layer 10, then open blowoff valve 15 and release, sewage passes through activated carbon filter plate 11, activated carbon filter plate 11
The poisonous substance and impurity in decontaminated water can be removed, sewage is sterilized by ultraviolet plate 12, ultraviolet plate 12 to sewage, the first electricity
The second motor 25 drives wheel disc 28 to rotate by the second rotating shaft 27 while machine 4 works, and drives belt 24 to make air blast by wheel disc 28
Machine 23 operates, by flexible pipe 21 air trapping in air accumulator 20, open air bleeding valve 19 and admit air into pipeline 13 and pass through exposure
Gas column 14 is discharged, so as to reach the effect that oxygenation is carried out to sewage.
In summary：The utility model is by setting the second motor 25, the second rotating shaft 27, wheel disc 28, belt 24, air blower
23rd, flexible pipe 21, pressure gauge 22, controller 9, the first motor 4, first rotating shaft 6, blade 7, contaminant filter layer 10, activated carbon filter plate
11st, ultraviolet plate 12, blow-off pipe 15, blowoff valve 16, air accumulator 20, pipeline 13, air bleeding valve 19 and the mutual cooperation for being aerated post 14,
Reach the advantages of oxygenation is carried out to sewage while sewage is purified, solve existing apparatus for treating sewage in processing waste water
During can not simultaneously to sewage carry out oxygenation the problem of.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of oxygenation device used for wastewater treatment, including waste water treatment box（1）, it is characterised in that：The waste water treatment box（1）Top
Left side offer dirt inlet（2）, the waste water treatment box（1）The surface in left side is fixedly connected with controller（9）, the sewage
Treatment box（1）The bottom of right lateral surface is provided through outlet pipe（17）, the outlet pipe（17）Top be provided with outlet valve
（18）, the outlet valve（18）Top be provided with blow-off pipe（15）, and blow-off pipe（15）One end and waste water treatment box（1）'s
Inner chamber connects, the blow-off pipe（15）Top be provided with blowoff valve（16）, the waste water treatment box（1）The top of inner chamber is set
There is the first motor（4）, first motor（4）Output end be fixedly connected with first rotating shaft（6）, the first rotating shaft（6）'s
Surface is arranged with blade（7）, the blade（7）Both sides be provided with magnet（8）, and magnet（8）Away from blade（7）Side
With waste water treatment box（1）Inner chamber be fixedly connected, the blade（7）Bottom be provided with contaminant filter layer（10）, and impurity mistake
Filtering layer（10）Both ends and waste water treatment box（1）Inner chamber be fixedly connected, the contaminant filter layer（10）Bottom be provided with work
Property carbon filtration plate（11）, and activated carbon filter plate（11）Both ends and waste water treatment box（1）Inner chamber be fixedly connected, the active carbon filtration
Plate（11）Bottom be provided with ultraviolet plate（12）, and ultraviolet plate（12）Both ends and waste water treatment box（1）Inner chamber fix
Connection, the ultraviolet plate（12）Bottom be provided with pipeline（13）, and pipeline（13）One end run through waste water treatment box（1）And
Extend to waste water treatment box（1）Left side, the pipeline（13）Top be fixedly connected with aeration post（14）, and it is aerated post（14）
Bottom and pipeline（13）Inner chamber connection, the waste water treatment box（1）Left side be provided with the second motor（25）, described second
Motor（25）Output end be fixedly connected with the second rotating shaft（27）, second rotating shaft（27）Away from the second motor（25）One end
It is socketed with wheel disc（28）, the wheel disc（28）Surface be arranged with belt（24）, the belt（24）Away from wheel disc（28）One
End is connected with air blower（23）, the air blower（23）Right side be communicated with flexible pipe（21）, the flexible pipe（21）Top
It is fixedly connected with pressure gauge（22）, and pressure gauge（22）One end and flexible pipe（21）Inner chamber connection, the air blower（23）'s
Right side is provided with air accumulator（20）, the flexible pipe（21）Away from air blower（23）One end and air accumulator（20）The bottom in left side connects
It is logical, the pipeline（13）Away from waste water treatment box（1）One end and air accumulator（20）Right side connection, the pipeline（13）Top
Portion is provided with air bleeding valve（19）, the controller（9）With the first motor（4）, the second motor（25）With ultraviolet plate（12）Electrically
Connection.
A kind of 2. oxygenation device used for wastewater treatment according to claim 1, it is characterised in that：Second motor（25）Bottom
Portion is fixedly connected with base（26）, and the second motor（25）Positioned at air blower（23）Left side.
A kind of 3. oxygenation device used for wastewater treatment according to claim 1, it is characterised in that：The waste water treatment box（1）It is interior
The first electric motor protecting shell is fixedly connected with the top of chamber（3）, and the first motor（4）Positioned at the first electric motor protecting shell（3）Inner chamber.
A kind of 4. oxygenation device used for wastewater treatment according to claim 1 or 3, it is characterised in that：First electric motor protecting
Shell（3）Fixed block is fixedly connected with the top of inner chamber（5）, and fixed block（5）Bottom and the first motor（4）Top fix connect
Connect.
A kind of 5. oxygenation device used for wastewater treatment according to claim 1, it is characterised in that：The waste water treatment box（1）Bottom
The corner in portion has been fixedly connected with slipmat（29）, and four slipmat（29）In being equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471098.8U CN206720959U (en) | 2017-05-02 | 2017-05-02 | A kind of oxygenation device used for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471098.8U CN206720959U (en) | 2017-05-02 | 2017-05-02 | A kind of oxygenation device used for wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206720959U true CN206720959U (en) | 2017-12-08 |
Family
ID=60507663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720471098.8U Expired - Fee Related CN206720959U (en) | 2017-05-02 | 2017-05-02 | A kind of oxygenation device used for wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206720959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911349A (en) * | 2018-07-06 | 2018-11-30 | 浙江海洋大学 | Fish culture sewage-treatment plant |
-
2017
- 2017-05-02 CN CN201720471098.8U patent/CN206720959U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911349A (en) * | 2018-07-06 | 2018-11-30 | 浙江海洋大学 | Fish culture sewage-treatment plant |
| CN108911349B (en) * | 2018-07-06 | 2021-02-02 | 浙江海洋大学 | Fish culture sewage treatment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190821 Address after: Room 2111, Room 9, Jinzhong Road, Huli District, Xiamen City, Fujian Province, 361000 Patentee after: Xiamen Green Water Source Environmental Protection Technology Co., Ltd. Address before: 225500 No. 12, Changjiang West Road, Jiangyan Town, Jiangyan District, Taizhou City, Jiangsu Province Patentee before: Ding Hao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200502 |