CN211006946U - Filtration formula municipal drainage pipe - Google Patents
Filtration formula municipal drainage pipe Download PDFInfo
- Publication number
- CN211006946U CN211006946U CN201921383210.8U CN201921383210U CN211006946U CN 211006946 U CN211006946 U CN 211006946U CN 201921383210 U CN201921383210 U CN 201921383210U CN 211006946 U CN211006946 U CN 211006946U
- Authority
- CN
- China
- Prior art keywords
- filter
- connecting cylinder
- cartridge filter
- cartridge
- drainage 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.)
- Expired - Fee Related
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 18
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 45
- 239000010865 sewage Substances 0.000 abstract description 36
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 8
- 239000011435 rock Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
Images
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model discloses a filtration formula municipal drainage pipe, including connecting cylinder, cartridge filter and apron, its characterized in that: the connecting cylinder both sides be provided with inlet tube, outlet pipe respectively to be provided with the fixed block on the inner wall of connecting cylinder bottom, the cartridge filter activity place on the fixed block, be provided with the filtration pore in cartridge filter lateral wall and bottom, and be provided with the spliced pole perpendicularly in the cartridge filter, apron and connecting cylinder swing joint. The utility model discloses be provided with the water inlet on the cartridge filter lateral wall to relative the junction of water inlet and inlet tube and connecting cylinder, carry sewage and impurity to the connecting cylinder in through the inlet tube, inertial effect makes sewage and impurity filter in entering into the cartridge filter through the water inlet, and the filtration pore on the cartridge filter makes sewage and impurity separation, and sewage is discharged through the outlet pipe after filtering, and impurity remains in the cartridge filter, makes the municipal drainage pipe have filtering capability, avoids causing the jam to the municipal drainage pipe, prolongs the life of municipal drainage pipe.
Description
Technical Field
The utility model relates to a drain pipe specifically relates to a filtration formula municipal drainage pipe.
Background
In municipal drainage system in city, the drain pipe is indispensable important component part, basic constitutional unit and junction in the plumbing network system, if do not carry out filtration treatment to sewage in the discharge process of sewage, not only can cause the jam of drain pipe, also can cause the damage of drain pipe, and then reduced sewage discharge's efficiency, current municipal drain pipe does not have filtering capability mostly, the drain pipe that the minority has filtering capability also has the problem that the filtration quality is not high, the filter effect is not good, it is inconvenient to clear up impurity after filtering.
Disclosure of Invention
The utility model aims at providing a filtration formula municipal drain pipe that structural design is reasonable, filter quality is good, the filter effect is good, be convenient for carry out the clearance to impurity after filtering to the problem that filter quality is not high, filter effect is not good, inconvenient impurity carries out the clearance to current municipal drain pipe filter equipment exists.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a filtration formula municipal drainage pipe, includes connecting cylinder, cartridge filter and apron, its characterized in that: the two sides of the connecting cylinder are respectively provided with a water inlet pipe and a water outlet pipe, the inner wall of the bottom of the connecting cylinder is provided with a fixed block, the connecting cylinder is connected with the water inlet pipe, the water outlet pipe and the fixed block by welding, the connecting strength between the connecting cylinder and the water inlet pipe, the water outlet pipe and the fixed block is improved, the structural strength of the municipal drainage pipe is enhanced, the filter cartridge is movably arranged on the fixed block, the side wall and the bottom of the filter cartridge are provided with filter holes, connecting columns are vertically arranged in the filter cartridge, the filter cartridge is arranged on the fixed block, the filter cartridge is prevented from shaking in the working process, the stability of the filter cartridge in the working process is improved, the filtering effect of sewage in the municipal drainage pipe is enhanced, the cover plate is movably connected with the connecting cylinder, the upright post is vertically arranged on the back surface of, be convenient for apron installation on the connecting cylinder, pass the spacing hole on the baffle with the connecting column top, it is rotatory to make the baffle can center on the spliced pole, the installation or the taking off of the apron of being convenient for, when the apron is taken off, the apron rises, the limiting plate that the baffle drove the connecting column top rises, make the spliced pole drive the impurity of cartridge filter and cartridge filter shift out from the connecting cylinder, be convenient for clear up the impurity in the cartridge filter, after the clearance impurity, put into the cartridge filter on the fixed block in the connecting cylinder, carry out filtration treatment once more to the sewage in the municipal drainage pipe, improve the filter effect of sewage.
Preferably, the cartridge filter lateral wall on be provided with the water inlet to relative with the junction of water inlet pipe and connecting cylinder, carry sewage and impurity to the connecting cylinder in through the inlet tube, inertial effect makes sewage and impurity enter into the cartridge filter through the water inlet and filters, and the filtration pore on the cartridge filter makes sewage and impurity separation, and sewage after the filtration is discharged through the outlet pipe, and impurity remains in the cartridge filter, makes municipal drainage pipe have filtering capability, avoids causing the jam to municipal drainage pipe, extension municipal drainage pipe's life.
Preferably, cartridge filter inner wall and spliced pole between be provided with the connecting rod, improved the joint strength between cartridge filter and the spliced pole through the connecting rod, the reinforcing spliced pole drives cartridge filter and the interior impurity of cartridge filter and shifts out the stability of in-process from the connecting cylinder, has improved work efficiency.
Preferably, the baffle is provided with a limiting hole, the top end of the connecting column penetrates through the limiting hole, the top end of the connecting column is provided with a limiting plate, the cover plate is connected with the connecting cylinder through threads, the cover plate is convenient to install on the connecting cylinder, the top end of the connecting column penetrates through the limiting hole on the baffle, the baffle can rotate around the connecting column, the cover plate is convenient to install or take down, when the cover plate is taken down, the cover plate rises, the baffle plate drives the limiting plate at the top end of the connecting column to rise, so that the connecting column drives the filter cartridge and impurities in the filter cartridge to move out of the connecting cylinder, the impurities in the filter cartridge are convenient to clean, after the impurities are cleaned, the filter cartridge is placed on the fixing block in the connecting cylinder, carry out filtration treatment once more to the sewage in the municipal drainage pipe, improve the filter effect of sewage, place the cartridge filter on the fixed block, avoid the cartridge filter to take place to rock in the course of the work, improved the stability of cartridge filter in the course of the work.
Has the advantages that: the utility model is provided with the limiting hole on the baffle, the top end of the connecting column passes through the limiting hole, the top end of the connecting column is provided with the limiting plate, the cover plate is connected with the connecting cylinder through the thread, the installation of the cover plate on the connecting cylinder is convenient, the top end of the connecting column passes through the limiting hole on the baffle, the baffle can rotate around the connecting column, the installation or the removal of the cover plate is convenient, when the cover plate is taken down, the cover plate rises, the baffle plate drives the limiting plate at the top end of the connecting column to rise, so that the connecting column drives the filter cartridge and impurities in the filter cartridge to move out of the connecting cylinder, the impurities in the filter cartridge are convenient to clean, after the impurities are cleaned, the filter cartridge is placed on the fixing block in the connecting cylinder, carry out filtration treatment once more to the sewage in the municipal drainage pipe, improve the filter effect of sewage, place the cartridge filter on the fixed block, avoid the cartridge filter to take place to rock in the course of the work, improved the stability of cartridge filter in the course of the work.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the partial structure diagram of the present invention, which illustrates the connection structure of the filter cartridge and the water inlet.
Fig. 3 is a schematic partial structural diagram of the present invention, illustrating a connection structure of the filter cartridge and the connection column.
Fig. 4 is a schematic view of a part of the structure of the present invention, illustrating the connection structure of the connection column and the spacing hole.
Fig. 5 is a schematic view of another embodiment of the present invention.
Fig. 6 is a schematic view of a part of the structure of the present invention, illustrating the connection structure of the connecting cylinder and the baffle.
Fig. 7 is a schematic partial structural view of the present invention, illustrating a connection structure of the filter cartridge and the limiting column.
In the figure: 1. the water filter comprises a connecting cylinder, a filter cylinder 2, a cover plate 3, a water inlet pipe 4, a water outlet pipe 5, a fixing block 6, a connecting column 7, a water inlet 8, a filter hole 9, a connecting rod 10, a limiting plate 11, an upright post 12, a baffle 13, a limiting hole 14, a stop block 15, a limiting strip 16, a lifting ring 17 and a spring 18.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in figures 1-4: the utility model provides a filtration formula municipal drainage pipe, includes connecting cylinder 1, cartridge filter 2 and apron 3, its characterized in that: the connecting cylinder 1 is respectively provided with a water inlet pipe 4 and a water outlet pipe 5 on two sides, the inner wall of the bottom of the connecting cylinder 1 is provided with a fixing block 6, the connecting cylinder 1 is connected with the water inlet pipe 4, the water outlet pipe 5 and the fixing block 6 by welding, the connecting strength between the connecting cylinder 1 and the water inlet pipe 4, the water outlet pipe 5 and the fixing block 6 is improved, the structural strength of the municipal drainage pipe is enhanced, the filter cylinder 2 is movably arranged on the fixing block 6, the side wall and the bottom of the filter cylinder 2 are provided with filter holes 9, a connecting column 7 is vertically arranged in the filter cylinder 2, the filter cylinder 2 is arranged on the fixing block 6, the filter cylinder 2 is prevented from shaking in the working process, the stability of the filter cylinder 2 in the working process is improved, the filtering effect of the sewage in the municipal drainage pipe is enhanced, the cover plate 3 is movably connected with the, and be provided with baffle 13 on stand 12, pass through threaded connection with apron 3 and connecting cylinder 1, be convenient for apron 3 the installation on connecting cylinder 1, pass spacing hole 14 on baffle 13 with 7 tops of spliced pole, make baffle 13 can rotate around spliced pole 7, be convenient for apron 3's installation or take off, when apron 3 takes off, apron 3 rises, baffle 13 drives the limiting plate 11 on spliced pole 7 top and rises, make spliced pole 7 drive cartridge filter 2 and the impurity in the cartridge filter 2 shifts out from connecting cylinder 1, be convenient for clear up the impurity in the cartridge filter 2, after the clearance impurity, put cartridge filter 2 on the fixed block 6 in the connecting cylinder 1, carry out filtration treatment once more to the sewage in the municipal drainage pipe, improve the filter effect of sewage.
Preferably, cartridge filter 2 lateral wall on be provided with water inlet 8, and it is relative with water inlet 8 and inlet tube 4 and connecting cylinder 1's junction, carry sewage and impurity to connecting cylinder 1 in through inlet tube 4, inertial effect makes sewage and impurity filter in entering into cartridge filter 2 through water inlet 8, filtration pore 9 on the cartridge filter 2 makes sewage and impurity separation, sewage after the filtration is discharged through outlet pipe 5, impurity remains in cartridge filter 2, make municipal drainage pipe have filtering capability, avoid causing the jam to municipal drainage pipe, the life of extension municipal drainage pipe.
Preferably, 2 inner walls of cartridge filter and spliced pole 7 between be provided with connecting rod 10, improved the joint strength between cartridge filter 2 and spliced pole 7 through connecting rod 10, reinforcing spliced pole 7 drives cartridge filter 2 and 2 interior impurity of cartridge filter and shifts out the stability of in-process from connecting cylinder 1, has improved work efficiency.
Preferably, the baffle 13 is provided with a limit hole 14, the top end of the connecting column 7 penetrates through the limit hole 14, the top end of the connecting column 7 is provided with a limit plate 11, the cover plate 3 is in threaded connection with the connecting cylinder 1, so that the cover plate 3 can be conveniently installed on the connecting cylinder 1, the top end of the connecting column 7 penetrates through the limit hole 14 on the baffle 13, the baffle 13 can rotate around the connecting column 7, so that the cover plate 3 can be conveniently installed or taken down, when the cover plate 3 is taken down, the cover plate 3 rises, the baffle 13 drives the limit plate 11 at the top end of the connecting column 7 to rise, so that the connecting column 7 drives the filter cartridge 2 and impurities in the filter cartridge 2 to move out from the connecting cylinder 1, so that the impurities in the filter cartridge 2 can be conveniently cleaned, after the impurities are cleaned, the filter cartridge 2 is placed on the fixed block 6 in the connecting cylinder 1, the sewage in the municipal drainage pipe is filtered again, the, avoid cartridge filter 2 to take place to rock in the course of the work, improved the stability of cartridge filter 2 in the course of the work.
Example two:
as shown in fig. 5: the utility model provides a filtration formula municipal drainage pipe, includes connecting cylinder 1, cartridge filter 2 and apron 3, its characterized in that: the connecting cylinder 1 is respectively provided with a water inlet pipe 4 and a water outlet pipe 5 on two sides, the inner wall of the bottom of the connecting cylinder 1 is provided with a fixing block 6, the connecting cylinder 1 is connected with the water inlet pipe 4, the water outlet pipe 5 and the fixing block 6 by welding, the connecting strength between the connecting cylinder 1 and the water inlet pipe 4, the water outlet pipe 5 and the fixing block 6 is improved, the structural strength of the municipal drainage pipe is enhanced, the filter cylinder 2 is movably arranged on the fixing block 6, the side wall and the bottom of the filter cylinder 2 are provided with filter holes 9, a connecting column 7 is vertically arranged in the filter cylinder 2, the filter cylinder 2 is arranged on the fixing block 6, the filter cylinder 2 is prevented from shaking in the working process, the stability of the filter cylinder 2 in the working process is improved, the filtering effect of the sewage in the municipal drainage pipe is enhanced, the cover plate 3 is movably connected with the, and be provided with baffle 13 on stand 12, pass through threaded connection with apron 3 and connecting cylinder 1, be convenient for apron 3 the installation on connecting cylinder 1, pass spacing hole 14 on baffle 13 with 7 tops of spliced pole, make baffle 13 can rotate around spliced pole 7, be convenient for apron 3's installation or take off, when apron 3 takes off, apron 3 rises, baffle 13 drives the limiting plate 11 on spliced pole 7 top and rises, make spliced pole 7 drive cartridge filter 2 and the impurity in the cartridge filter 2 shifts out from connecting cylinder 1, be convenient for clear up the impurity in the cartridge filter 2, after the clearance impurity, put cartridge filter 2 on the fixed block 6 in the connecting cylinder 1, carry out filtration treatment once more to the sewage in the municipal drainage pipe, improve the filter effect of sewage.
Preferably, cartridge filter 2 lateral wall on be provided with water inlet 8, and it is relative with water inlet 8 and inlet tube 4 and connecting cylinder 1's junction, carry sewage and impurity to connecting cylinder 1 in through inlet tube 4, inertial effect makes sewage and impurity filter in entering into cartridge filter 2 through water inlet 8, filtration pore 9 on the cartridge filter 2 makes sewage and impurity separation, sewage after the filtration is discharged through outlet pipe 5, impurity remains in cartridge filter 2, make municipal drainage pipe have filtering capability, avoid causing the jam to municipal drainage pipe, the life of extension municipal drainage pipe.
Preferably, 2 inner walls of cartridge filter and spliced pole 7 between be provided with connecting rod 10, improved the joint strength between cartridge filter 2 and spliced pole 7 through connecting rod 10, reinforcing spliced pole 7 drives cartridge filter 2 and 2 interior impurity of cartridge filter and shifts out the stability of in-process from connecting cylinder 1, has improved work efficiency.
Preferably, the baffle 13 is provided with a limit hole 14, the top end of the connecting column 7 penetrates through the limit hole 14, the top end of the connecting column 7 is provided with a limit plate 11, the cover plate 3 is in threaded connection with the connecting cylinder 1, so that the cover plate 3 can be conveniently installed on the connecting cylinder 1, the top end of the connecting column 7 penetrates through the limit hole 14 on the baffle 13, the baffle 13 can rotate around the connecting column 7, so that the cover plate 3 can be conveniently installed or taken down, when the cover plate 3 is taken down, the cover plate 3 rises, the baffle 13 drives the limit plate 11 at the top end of the connecting column 7 to rise, so that the connecting column 7 drives the filter cartridge 2 and impurities in the filter cartridge 2 to move out from the connecting cylinder 1, so that the impurities in the filter cartridge 2 can be conveniently cleaned, after the impurities are cleaned, the filter cartridge 2 is placed on the fixed block 6 in the connecting cylinder 1, the sewage in the municipal drainage pipe is filtered again, the, avoid cartridge filter 2 to take place to rock in the course of the work, improved the stability of cartridge filter 2 in the course of the work.
Preferably, 1 inner wall of connecting cylinder on be provided with dog 15, 2 outer walls of cartridge filter on be provided with spacing 16 to wear spacing 16 between dog 15 and dog 15, through dog 15, spacing 16 can play limiting displacement to ascending or descending in-process cartridge filter 2, avoid cartridge filter 2 to rise or descend the in-process and take place to rock, make water inlet 8 on the cartridge filter 2 relative with the junction of inlet tube 4 and connecting cylinder 1, in sewage of being convenient for carries impurity fully to flow into cartridge filter 2, improve the filtration efficiency and the filter effect of sewage.
Preferably, the cover plate 3 is provided with a hanging ring 17, and the cover plate 3 is convenient to hang through the hanging ring 17, so that the filter cylinder 2 can be hung out from the connecting cylinder 1, the cleaning efficiency of the filtered impurities is improved, and the labor intensity of operators is reduced.
Preferably, the spring 18 is arranged on the connecting column 7 between the limiting plate 11 and the baffle 13, the buffering performance between the limiting plate 11 and the baffle 13 is improved through the spring 18, and the stability of the limiting plate 11 at the top end of the connecting column 7 driven by the baffle 13 in the lifting process is enhanced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (4)
1. The utility model provides a filtration formula municipal drainage pipe, includes connecting cylinder, cartridge filter and apron, its characterized in that: the connecting cylinder both sides be provided with inlet tube, outlet pipe respectively to be provided with the fixed block on connecting cylinder bottom inner wall, the cartridge filter activity place on the fixed block, be provided with the filtration pore in cartridge filter lateral wall and bottom to be provided with the spliced pole perpendicularly in the cartridge filter, apron and connecting cylinder swing joint, be provided with the stand perpendicularly on the apron back, and be provided with the baffle on the stand.
2. The filtered municipal drain of claim 1, wherein: the side wall of the filter cartridge is provided with a water inlet.
3. The filtered municipal drain of claim 1, wherein: and a connecting rod is arranged between the inner wall of the filter cartridge and the connecting column.
4. The filtered municipal drain of claim 1, wherein: the baffle plate is provided with a limiting hole, the top end of the connecting column penetrates through the limiting hole, and a limiting plate is arranged at the top end of the connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383210.8U CN211006946U (en) | 2019-08-23 | 2019-08-23 | Filtration formula municipal drainage pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383210.8U CN211006946U (en) | 2019-08-23 | 2019-08-23 | Filtration formula municipal drainage pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211006946U true CN211006946U (en) | 2020-07-14 |
Family
ID=71471202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921383210.8U Expired - Fee Related CN211006946U (en) | 2019-08-23 | 2019-08-23 | Filtration formula municipal drainage pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211006946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118125574A (en) * | 2024-05-08 | 2024-06-04 | 青岛海纳能源环保科技开发有限公司 | Industrial wastewater purification device with oil-liquid separation function |
-
2019
- 2019-08-23 CN CN201921383210.8U patent/CN211006946U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118125574A (en) * | 2024-05-08 | 2024-06-04 | 青岛海纳能源环保科技开发有限公司 | Industrial wastewater purification device with oil-liquid separation function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209745630U (en) | environmental monitoring sewage sampling device | |
| CN211006946U (en) | Filtration formula municipal drainage pipe | |
| CN112681498B (en) | Solid-liquid shunting type integrated sewage lifting pump station | |
| CN219663083U (en) | Filter convenient to dismantle replacement | |
| CN207412853U (en) | A kind of circulating sewage water impurity removal device | |
| CN211536663U (en) | Sedimentation tank waste fitting discharging for industrial sewage treatment | |
| CN214597506U (en) | Catch bits ware cartridge filter convenient to change | |
| CN210367181U (en) | Public formula sewage collection device for sewage treatment device | |
| CN107998714B (en) | A kind of sewage treatment contaminant filter system | |
| CN210206076U (en) | Oil-water separator | |
| CN208265965U (en) | A kind of water treatment facilities | |
| CN207228294U (en) | A kind of gardens well lid | |
| CN202087117U (en) | Sewage treatment filter device | |
| CN214270483U (en) | Air floatation machine of sewage treatment equipment | |
| CN220939560U (en) | Fountain cleaning filter | |
| CN214088066U (en) | Sewage treatment plant for environmental engineering | |
| CN213270489U (en) | High-efficient sewage lift pump | |
| CN216259502U (en) | Solution pool for solution type air purification and disinfection module | |
| CN221254047U (en) | Deionized water purifying equipment | |
| CN212641708U (en) | Rainwater shunt in construction | |
| CN217961474U (en) | Filter equipment for municipal administration water supply and drainage | |
| CN218810399U (en) | Simple ultrafiltration system | |
| CN203303721U (en) | Novel cloth filter | |
| CN215962464U (en) | Water supply and drainage filtering device for building construction | |
| CN215442282U (en) | Rainwater is collected and is convenient for dirty well of cutting of clearance |
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: 20210916 Address after: 110000 xinsanmianchuan village, sanmianchuan Town, Faku County, Shenyang City, Liaoning Province Patentee after: Shenyang Xinda road construction and Installation Engineering Co.,Ltd. Address before: 511431 Daxin business square 623, 624, 625, Shangyu section of 105 National Highway, Luopu street, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU YITAN UNDERGROUND PIPELINE INSPECTION TECHNOLOGY SERVICE Co.,Ltd. |
|
| 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: 20200714 |