CN208853397U - It is a kind of can free bend oil pipeline inner-wall cleaning device - Google Patents
It is a kind of can free bend oil pipeline inner-wall cleaning device Download PDFInfo
- Publication number
- CN208853397U CN208853397U CN201821484049.9U CN201821484049U CN208853397U CN 208853397 U CN208853397 U CN 208853397U CN 201821484049 U CN201821484049 U CN 201821484049U CN 208853397 U CN208853397 U CN 208853397U
- Authority
- CN
- China
- Prior art keywords
- flexible
- bar
- outer bar
- fixed link
- interior bar
- 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
Landscapes
- Cleaning In General (AREA)
Abstract
The utility model discloses it is a kind of can free bend oil pipeline inner-wall cleaning device, including stretch outer bar, second spring, third of brush plate, bristle, first movement wheel, swivel becket, ball bearing, the first spring, the first flexible interior bar, the first flexible outer bar, the first in command, fixed plate, grinding disc, shell, motor, piston rod, electric cylinders, second handle, the second flexible outer bar, the second flexible interior bar, pedestal, third stretch interior bar, the second movable pulley, swivel becket, universal shaft, fixed link, the 4th flexible interior bar, third spring and the 4th flexible outer bar.The beneficial effects of the utility model are: passing through the mutual cooperation between the first flexible outer bar, the first flexible interior bar and the first spring, make cleaning device adjustable size, the petroleum pipeline of different bores can be cleaned, it is attached between fixed link and fixed link by universal shaft, make fixed link can autorotation angle, hairbrush is installed in fixed link, dirt can be scanned out together when extracting cleaning device out.
Description
Technical field
The utility model is related to a kind of cleaning apparatus for pipes in fact, specially it is a kind of can free bend oil pipeline inner wall it is clear
Clean device, belongs to technical field of petroleum machinery.
Background technique
Petroleum pipeline is the pipeline of transfer oil crude oil or oil product, and petroleum pipeline its inner wall when long-time uses can be saved bit by bit
Many dirt impurity, influence the hauling operation of petroleum pipeline, need to be cleared up by some petroleum pipeline inner-wall cleaning devices it.
Used petroleum pipeline inner-wall cleaning device is functionally more single at this stage, and the petroleum pipeline of fixed bore can only
Using fixed cleaning device, bore can not be changed freely, while can only be directed to some straight tubes, in some special circumstances defeated
Oil pipe is that curved, common cleaning device can not clean, and the dirt under cleaning is needed by artificial secondary cleaning, sanitizer cartridge
Setting voluntarily to take dirt out of.Therefore, propose regarding to the issue above it is a kind of can free bend oil pipeline inner wall sanitizer cartridge
It sets.
Utility model content
The purpose of this utility model be that solve the above-mentioned problems and provide it is a kind of can free bend oil pipeline
Inner-wall cleaning device.
The utility model is achieved through the following technical solutions above-mentioned purpose, it is a kind of can free bend oil pipeline inner wall
Cleaning device including fixed link, universal shaft, motor and the electric cylinders from left to right successively installed, and is installed at the top of fixed link
With the first flexible outer bar, the first flexible interior bar and grinding disc of bottom；Wherein, there are two and by universal for the fixed link installation
Axis connection；
Two described fixed link one end are respectively mounted a swivel becket and are rotatablely connected by ball bearing, the rotation
Ring bottom is fixedly connected with the 4th flexible interior bar, and third spring, the 4th flexible interior bar bottom are socketed in the 4th flexible interior bar
It is socketed the 4th flexible outer bar, the 4th flexible outer bar bottom is fixedly connected with brush plate, and bristle is installed in brush plate bottom, described
Brush plate bottom center installs first movement wheel, and the swivel becket side fixed link upper top and bottom respectively install two first
Flexible interior bar, and the first flexible interior bar other end is socketed in the first flexible outer bar and is slidably connected, the first flexible interior bar
The first spring of upper socket, the first flexible outer bar top is fixedly connected with fixed plate, and grinding disc is fixedly connected in fixed plate, and two
A first flexible outer bar is respectively fixedly connected with the first in command at bottom, another described fixed link side passes through universal shaft
Connect rotating block；
Shell is installed in the rotating block side, installs motor in the shell, and machine shaft is fixedly connected across shell
Rotating block is fixedly connected with third at the housing bottom center and stretches outer bar, and third outer bar bottom socket third of stretching is flexible
Interior bar, the third stretch interior bar on be socketed second spring, the shell side is fixedly connected with piston rod at center；
Piston rod is installed in the electric cylinders side, and the electric cylinders other side is fixedly connected with second handle, and the electric cylinders bottom is solid
Surely the second flexible outer bar is connected, and the second flexible outer bar bottom is socketed the second flexible interior bar, the second flexible interior bar bottom is solid
Surely pedestal is connected.
Preferably, the first movement wheel is installed in bristle, and surrounding is all covered with bristle, and bristle does not influence first
The rotation of movable pulley.
Preferably, the rotating block is not in contact with each other with surface of shell.
Preferably, the brush plate is located at the left side of grinding disc, while retaining one end interval.
Preferably, it stretches outer bar and third when the described first flexible interior bar and the first flexible outer bar are retracted to minimum with third
When flexible interior bar is retracted to minimum, the distance between fixed link and grinding disc and the distance between casing center and the second movable pulley
It is identical.
Preferably, the described first flexible outer bar and the first spring, the flexible outer bar of third and second spring and the 4th are flexible outer
Bar and third spring, the place of contacting with each other is to be fixedly connected.
The beneficial effects of the utility model are:
1. the first flexible outer bar is socketed the first flexible interior bar, due to being socketed with the first spring in the first flexible interior bar, make the
One flexible outer bar is jacked up, by the contraction of spring make the grinding disc being installed in the first flexible outer bar can automatic controlled height,
It is set to be bonded grinding disc with oil transportation inside pipe wall automatically by the first spring when filling in petroleum pipeline.
2. being attached between fixed link and fixed link by universal shaft, fixed link is made to be freely rotatable angle, in fixation
Bristle is installed on bar, the dirt under cleaning can be scanned out together when extracting cleaning device out.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model brush plate structural schematic diagram；
Fig. 3 is the utility model fixed link side structure schematic view.
In figure: 1, brush plate, 101, bristle, 102, first movement wheel, 2, swivel becket, 201, ball bearing, the 3, first bullet
Spring, the 4, first flexible interior bar, the 5, first flexible outer bar, 501, the first in command, 6, fixed plate, 7, grinding disc, 8, shell, 9, electricity
Machine, 10, piston rod, 11, electric cylinders, 12, second handle, the 13, second flexible outer bar, the 14, second flexible interior bar, 15, pedestal, 16,
Third is stretched outer bar, 17, second spring, 18, third stretch interior bar, the 19, second movable pulley, 20, rotating block, 21, universal shaft,
22, fixed link, the 23, the 4th flexible interior bar, 24, third spring, the 25, the 4th flexible outer bar.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to shown in Fig. 1-3, it is a kind of can free bend oil pipeline inner-wall cleaning device, including from left to right successively
Fixed link 22, universal shaft 21, motor 9 and the electric cylinders 11 of installation, and be installed on the first of 22 top and bottom of fixed link and stretch
Outer bar 5, the first flexible interior bar 4 and grinding disc 7；Wherein, the installation of fixed link 22 is connected there are two and by universal shaft 21；
Two described 22 one end of fixed link are respectively mounted a swivel becket 2 and are rotatablely connected by ball bearing 201, make
Rotation burr while rotation of fixed link 22 will not follow it to be rotated；2 bottom of swivel becket is fixedly connected with the 4th and stretches
Contracting interior bar 23, and third spring 24 is socketed in the 4th flexible interior bar 23, the 4th flexible 23 bottom of the interior bar socket the 4th is flexible
Outer bar 25 makes third spring 24 withstand the 4th flexible outer bar 25 by the relationship of socket, makes it can be in the defeated of specified bore range
It is maximum that oil transportation inside pipe wall is expanded in oil pipe；4th flexible 25 bottom of outer bar is fixedly connected with brush plate 1, and brush plate 1
Bristle 101 is installed in bottom, for clearing away the dirt under cleaning in petroleum pipeline；1 bottom center of the brush plate installation first moves
Driving wheel 102 makes brush plate 1 mitigate frictional force in oil transportation in-pipe, makes mobile more convenient；2 side of swivel becket is fixed
Two the first flexible interior bars 4 are respectively installed in 22 upper top of bar and bottom, and first flexible 4 other end of interior bar is socketed the first flexible outer bar
It is slidably connected on 5, the first spring 3, fixed company at the top of the first flexible outer bar 5 is socketed in the first flexible interior bar 4
Fixed plate 6 is connect, and is fixedly connected with grinding disc 7 in fixed plate 6, for oil transportation inside pipe wall of polishing；Two first flexible outer bars 5
It is respectively fixedly connected with the first in command 501 at bottom, for pulling the first flexible outer bar 5, makes grinding disc 7 to 22 direction of fixed link
It shrinks；Another described 22 side of fixed link connects rotating block 20 by universal shaft 21, for connecting motor 9；
Shell 8 is installed in 20 side of rotating block, plays the role of protecting motor 9, motor 9 is installed in the shell 8, and
9 shaft of motor passes through shell 8 and is fixedly connected with rotating block 20, applies kinetic energy to the fixed link 22 being connected in active block；The shell
8 bottom center of body is fixedly connected with the flexible outer bar 16 of third, and the flexible flexible interior bar 18 of 16 bottom of outer bar socket third of third, institute
It states and is socketed second spring 17 in the flexible interior bar of third, so that second spring 17 is withstood the flexible outer bar 16 of third by the relationship of socket,
Make it that can be expanded to oil transportation inside pipe wall maximum in the petroleum pipeline of specified bore range, is used to support shell 8；The shell 8
It is fixedly connected with piston rod 10 at the center of side, so that shell 8 is connected electric cylinders 11 by piston rod 10；
Piston rod 10 is installed in 11 side of electric cylinders, makes piston rod 10 that can be stretched out and be shunk by electric cylinders 11；It is described
11 other side of electric cylinders is fixedly connected with second handle 12, and electric cylinders 11 are auxiliarily fixed by manpower；11 bottom of electric cylinders is fixedly connected
Second flexible outer bar 13, and the second flexible 13 bottom of outer bar is socketed the second flexible interior bar 14, second flexible 14 bottom of interior bar
It is fixedly connected with pedestal 15, is used to support electric cylinders 11, manpower is saved, makes electric cylinders 11 and the same parallel lines of petroleum pipeline.
The first movement wheel 102 is installed in bristle 101, and surrounding is all covered with bristle 101, and the not shadow of bristle 101
The rotation for ringing first movement wheel 102, makes first movement wheel 102 not influence bristle 101 to petroleum pipeline while supporting brush plate 1
The cleaning of inner wall；The rotating block 20 is not in contact with each other with 8 surface of shell, and 8 surface of shell will not be damaged simultaneously by reducing frictional force；Institute
The left side that brush plate 1 is located at grinding disc 7 is stated, while retaining one end interval, makes grinding disc 7 in rotation, the bristle on brush plate 1
101 do not influence its rotation；It stretches outer bar 16 when the first flexible interior bar 4 and the first flexible outer bar 5 are retracted to minimum with third
With third stretch interior bar 18 be retracted to minimum when, the distance between fixed link 22 and grinding disc 7 and 8 center of shell are mobile with second
The distance between wheel 19 is identical, and the petroleum pipeline motor 9 for enabling grinding disc 7 to fill in can equally enter；The first flexible outer bar 5
With the first spring 3, the flexible outer bar 16 of third and second spring 17 and the 4th flexible outer bar 25 and third spring 24, contact with each other place
It is to be fixedly connected, prevents spring that may be socketed in flexible outer bar because of deformation when shrinking.
When the utility model is used, pull the first in command 501, make the grinding disc 7 being installed in the first flexible outer bar 5 to
22 direction of fixed link is shunk, and fixed link 22 is filled in petroleum pipeline and unclamps the first in command 501, at this time 22 top of fixed link and bottom
Two grinding disc 7 of portion's installation can withstand oil transportation inside pipe wall by the rebound of the first spring 3, between fixed link 22 and fixed link 22
Universal shaft 21 can voluntarily be rotated when encountering curve bend, twitch 11 bottom of electric cylinders the second flexible interior bar 14, for fixing
Electric cylinders 11 make to be parallel to each other between electric cylinders 11 and petroleum pipeline, and starting motor 9 makes 9 main shaft of motor that fixed link 22 be driven to rotate, in turn
So that grinding disc 7 is polished oil transportation inside pipe wall, starting electric cylinders 11 push piston rod 10 forward, enable grinding disc 7 machinery to
Preceding polishing, while motor 9 can also be filled in petroleum pipeline, when cleaning finishes, take out cleaning device, be installed on while taking out
The bristle 101 of 22 bottom of fixed link can take together the dirt under cleaning in petroleum pipeline out of.
Three asynchronous electrics of variable-pole multi-speed that motor 9 is sold using specific type of electric machine Co., Ltd, Shenyang motor group
Machine, support circuit can be provided by businessman.
The HE100- (50~500) that electric cylinders 11 are sold using the Lian Hua automation equipment Co., Ltd-direct-connected Europe (D) rule
Servo electric jar, support circuit can be provided by businessman.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. one kind can free bend oil pipeline inner-wall cleaning device, it is characterised in that: including what is from left to right successively installed
Fixed link (22), universal shaft (21), motor (9) and electric cylinders (11), and it is installed on the first of fixed link (22) top and bottom
Flexible outer bar (5), the first flexible interior bar (4) and grinding disc (7)；Wherein, there are two and by ten thousand for fixed link (22) installation
It is connected to axis (21)；
Two described fixed link (22) one end are respectively mounted a swivel becket (2) and are rotatablely connected by ball bearing (201),
Swivel becket (2) bottom is fixedly connected with the 4th flexible interior bar (23), and third spring is socketed on the 4th flexible interior bar (23)
(24), the described 4th flexible interior bar (23) bottom is socketed the 4th flexible outer bar (25), and the 4th flexible outer bar (25) bottom is solid
Surely brush plate (1) is connected, and brush plate (1) bottom installation bristle (101), brush plate (1) the bottom center installation first
Two the first flexible interior bars (4) are respectively installed in movable pulley (102), swivel becket (2) side fixed link (22) upper top and bottom,
And first flexible interior bar (4) other end be socketed on the first flexible outer bar (5) and be slidably connected, the first flexible interior bar (4)
The first spring of upper socket (3), first flexible outer bar (5) top are fixedly connected fixed plate (6), and fixed in fixed plate (6)
It connecting grinding disc (7), two first flexible outer bars (5) are respectively fixedly connected with the first in command (501) at bottom, another
Fixed link (22) side passes through universal shaft (21) connection rotating block (20)；
Shell (8) are installed in rotating block (20) side, install motor (9) in the shell (8), and motor (9) shaft passes through
Shell (8) is fixedly connected rotating block (20), and shell (8) bottom center is fixedly connected with third and stretches outer bar (16), and the
Three flexible outer bar (16) bottom socket thirds are stretched interior bar (18), are socketed second spring (17) in the flexible interior bar of the third, institute
It states and is fixedly connected with piston rod (10) at shell (8) side center；
Piston rod (10) are installed in electric cylinders (11) side, and electric cylinders (11) other side is fixedly connected with second handle (12), institute
It states electric cylinders (11) bottom and is fixedly connected with the second flexible outer bar (13), and the second flexible outer bar (13) bottom is socketed the second flexible interior bar
(14), the described second flexible interior bar (14) bottom is fixedly connected with pedestal (15).
2. one kind according to claim 1 can free bend oil pipeline inner-wall cleaning device, it is characterised in that: it is described
First movement wheel (102) is installed in bristle (101), and surrounding is all covered with bristle (101), and bristle (101) does not influence the
The rotation of one movable pulley (102).
3. one kind according to claim 1 can free bend oil pipeline inner-wall cleaning device, it is characterised in that: it is described
Rotating block (20) is not in contact with each other with shell (8) surface.
4. one kind according to claim 1 can free bend oil pipeline inner-wall cleaning device, it is characterised in that: it is described
Brush plate (1) is located at the left side of grinding disc (7), while retaining one end interval.
5. one kind according to claim 1 can free bend oil pipeline inner-wall cleaning device, it is characterised in that: it is described
When first flexible interior bar (4) and the first flexible outer bar (5) are retracted to minimum and third is stretched outer bar (16) and the flexible interior bar of third
(18) when being retracted to minimum, the distance between fixed link (22) and grinding disc (7) and shell (8) center and the second movable pulley (19)
The distance between it is identical.
6. one kind according to claim 1 can free bend oil pipeline inner-wall cleaning device, it is characterised in that: it is described
First flexible outer bar (5) and the first spring (3), third flexible outer bar (16) and second spring (17) and the 4th flexible outer bar (25)
With third spring (24), the place of contacting with each other is to be fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821484049.9U CN208853397U (en) | 2018-09-12 | 2018-09-12 | It is a kind of can free bend oil pipeline inner-wall cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821484049.9U CN208853397U (en) | 2018-09-12 | 2018-09-12 | It is a kind of can free bend oil pipeline inner-wall cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208853397U true CN208853397U (en) | 2019-05-14 |
Family
ID=66417630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821484049.9U Expired - Fee Related CN208853397U (en) | 2018-09-12 | 2018-09-12 | It is a kind of can free bend oil pipeline inner-wall cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208853397U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497284A (en) * | 2019-09-10 | 2019-11-26 | 桂林航天工业学院 | A kind of engine aspirating system air inlet pipe process equipment |
| CN110587398A (en) * | 2019-08-30 | 2019-12-20 | 广州文冲船厂有限责任公司 | Tool for pulling and grinding inner surface of hole |
| CN111468477A (en) * | 2020-04-16 | 2020-07-31 | 河北新兴铸管有限公司 | Cast iron pipe inside lining defect cleaning device |
| CN111558585A (en) * | 2020-05-28 | 2020-08-21 | 杨英 | Be used for abluent robotic arm of bending pipeline |
| CN112264848A (en) * | 2020-09-21 | 2021-01-26 | 缙云县恩润工业设计有限公司 | Pipe inner wall rust removal device for environmental protection machinery production |
| CN114055314A (en) * | 2021-09-28 | 2022-02-18 | 河南新开源石化管道有限公司 | Inner wall processing apparatus of return bend for petrochemical industry pipeline |
| CN115464478A (en) * | 2022-11-15 | 2022-12-13 | 泰州俊宇不锈钢材料有限公司 | Nonrust steel pipe inner wall burnishing device |
| CN115674031A (en) * | 2022-11-17 | 2023-02-03 | 山东宏盛机械装备有限公司 | Inner wall shot blasting device for large-diameter steel pipe |
-
2018
- 2018-09-12 CN CN201821484049.9U patent/CN208853397U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587398A (en) * | 2019-08-30 | 2019-12-20 | 广州文冲船厂有限责任公司 | Tool for pulling and grinding inner surface of hole |
| CN110497284A (en) * | 2019-09-10 | 2019-11-26 | 桂林航天工业学院 | A kind of engine aspirating system air inlet pipe process equipment |
| CN111468477A (en) * | 2020-04-16 | 2020-07-31 | 河北新兴铸管有限公司 | Cast iron pipe inside lining defect cleaning device |
| CN111468477B (en) * | 2020-04-16 | 2021-06-01 | 河北新兴铸管有限公司 | Cast iron pipe inside lining defect cleaning device |
| CN111558585A (en) * | 2020-05-28 | 2020-08-21 | 杨英 | Be used for abluent robotic arm of bending pipeline |
| CN112264848A (en) * | 2020-09-21 | 2021-01-26 | 缙云县恩润工业设计有限公司 | Pipe inner wall rust removal device for environmental protection machinery production |
| CN114055314A (en) * | 2021-09-28 | 2022-02-18 | 河南新开源石化管道有限公司 | Inner wall processing apparatus of return bend for petrochemical industry pipeline |
| CN114055314B (en) * | 2021-09-28 | 2023-10-20 | 河南新开源石化管道有限公司 | Inner wall processing device of elbow for petrochemical pipeline |
| CN115464478A (en) * | 2022-11-15 | 2022-12-13 | 泰州俊宇不锈钢材料有限公司 | Nonrust steel pipe inner wall burnishing device |
| CN115674031A (en) * | 2022-11-17 | 2023-02-03 | 山东宏盛机械装备有限公司 | Inner wall shot blasting device for large-diameter steel pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208853397U (en) | It is a kind of can free bend oil pipeline inner-wall cleaning device | |
| CN110813809B (en) | Street lamp cleaning device | |
| CN114653696B (en) | Pipeline inner wall self-adaptive robot cleaning device based on centrifugal force principle | |
| CN106640553A (en) | Cleaning radius-variable fan tower cylinder cleaning equipment | |
| CN107061173B (en) | A kind of Intelligent wind driven generator | |
| CN109985865B (en) | Cleaning operation device of pipeline cleaning robot | |
| CN109108005A (en) | A kind of power pipe cleaning device | |
| CN209936513U (en) | Novel steel pipe internal grinding machine for hot-expanding steel pipe | |
| CN111318525A (en) | Pipeline inner wall scraping and sweeping device | |
| CN107321729A (en) | Cleaning brush dish in a kind of pipeline | |
| CN106090957A (en) | A kind of towed chimney cleaning plant and method for cleaning | |
| CN108253228A (en) | A kind of robot for being used to solve duct cleaning | |
| CN113245321A (en) | Self-adaptive passive cleaning robot for flammable and explosive dust pipeline | |
| CN108316456A (en) | A kind of municipal pipeline Accrete clearing device | |
| CN208004401U (en) | A kind of rotary spraying device | |
| CN203124365U (en) | Elastic movement brush device for brushing inner wall of pipeline | |
| CN201454948U (en) | Device for automatically removing attachments on metal tube inner wall | |
| CN107988937A (en) | A kind of traffic roadblock cleaning device | |
| CN203531849U (en) | Lining oil tube descaling device | |
| CN107051951A (en) | Steam turbine cylinder air chamber end mounting component frock | |
| CN102313487B (en) | Device for cleaning deposit on pipe wall and restoring pipe wall | |
| NO344708B1 (en) | Dope unit for pipe handling machine and method for supplying dope | |
| CN210632492U (en) | Cleaning device of electric automation equipment | |
| CN108403010A (en) | A kind of workshop automatic cleaning avoidance robot | |
| CN114161255A (en) | Flash removing equipment applied to forged pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190514 Termination date: 20200912 |