CN217222789U - Oil pipe belt cleaning device for oil development - Google Patents
Oil pipe belt cleaning device for oil development Download PDFInfo
- Publication number
- CN217222789U CN217222789U CN202221139098.5U CN202221139098U CN217222789U CN 217222789 U CN217222789 U CN 217222789U CN 202221139098 U CN202221139098 U CN 202221139098U CN 217222789 U CN217222789 U CN 217222789U
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- China
- Prior art keywords
- oil pipe
- oil
- pipe cleaning
- rolling
- cleaning
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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
- 238000004140 cleaning Methods 0.000 title claims abstract description 122
- 238000011161 development Methods 0.000 title abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000005096 rolling process Methods 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 5
- 238000000034 method Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 229910052923 celestite Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Cleaning In General (AREA)
Abstract
The utility model provides an oil pipe belt cleaning device for oil development, including oil pipe cleaning roller mechanism, oil pipe cleaning roller mechanism mainly comprises the triplex main structure: the oil pipe cleaning device comprises a rolling base body, a rolling sealing drawing cover and an oil pipe cleaning mechanism, wherein the rolling sealing drawing cover and the oil pipe cleaning mechanism are installed and fixed on the rolling base body, the rolling sealing drawing cover and the oil pipe cleaning mechanism are matched with each other for use, and the oil pipe cleaning mechanism is installed in the inner area of the rolling base body. The utility model discloses the roll base member and the oil pipe wiper mechanism of oil pipe cleaning roller mechanism can directly carry out cleaning treatment to a plurality of oil pipe inner walls, and roll base member and oil pipe wiper mechanism adopt the mode of circular array gyro wheel to wash oil pipe, and a plurality of oil pipes are accomodate to this mode type once and wash, improve abluent speed, and the number of times that will shut down many times is gathered together.
Description
Technical Field
The utility model belongs to the technical field of oil pipe washs, especially, relate to an oil pipe belt cleaning device for oil development.
Background
In oil exploitation, the consumption of an oil pipe accounts for 40% -50% of the cost of main materials, the use amount of the oil pipe is controlled, the key point of cost reduction and efficiency improvement of an oil production plant is achieved, the oil pipe repair rate is improved to be the most direct and effective way for achieving the aim, after the oil pipe is used for a long time, impurities such as oil stains and dirt are attached to the inner wall of the oil pipe, the scale is severe, the thickness of the oil pipe reaches 10-20 mm, the main components of the oil pipe are calcium carbonate and sulfate, and meanwhile, the oil pipe contains a small amount of components such as Fe2O3, BaSO4 and SrSO4, is compact and hard, needs to be cleaned regularly, and the impurities on the inner wall of the oil pipe are cleaned up. At present, the oil pipe cleaning device for oil exploitation has the following defects or problems: the existing oil pipe cleaning device can only be used for single and single cleaning, a plurality of oil pipes cannot be cleaned simultaneously, the cleaning speed is low, the cleaning automation degree is low, the oil pipes cannot be effectively limited when being cleaned, and certain dangerousness is realized.
Therefore, the invention of the oil pipe cleaning device for oil exploitation is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an oil pipe belt cleaning device for oil development, including oil pipe cleaning roller mechanism, oil pipe cleaning roller mechanism mainly comprises the triplex main structure: the oil pipe cleaning device comprises a rolling base body, a rolling seal drawing cover and an oil pipe cleaning mechanism, wherein the rolling seal drawing cover and the oil pipe cleaning mechanism are installed and fixed on the rolling base body, the rolling seal drawing cover and the oil pipe cleaning mechanism are matched with each other for use, and the oil pipe cleaning mechanism is installed in the inner area of the rolling base body.
The rolling matrix is composed of four parts of structures: oil pipe washs the body, the erection welding base, wash driver part and lid driver part, the oil pipe washs the body and adopts the lower extreme to be the cuboid that the arc was made, the erection welding base is installed in the top welding of the oil pipe washing body, the mounting hole has been seted up in erection welding base's self four corners, the rear surface that the oil pipe washd the body is installed respectively and is washed driver part and lid driver part, it installs a plurality ofly to wash driver part to be the mode of circular array, the lid driver part is installed singly, wash driver part and lid driver part and take out from the lid with oil pipe wiper mechanism and roll seal respectively and link to each other together.
The rolling seal drawing-off cover is composed of six parts: the oil pipe cleaning device comprises a concave mounting area, a sealing cover plate, an oil pipe inserting area, a cleaning water injection pipe, a cleaning high-pressure spray head and a discharge pipeline, wherein the concave mounting area is made of a circle, the concave mounting area is arranged on the surface of one side of an oil pipe cleaning body of a rolling base body, and the sealing cover plate is mounted on the concave mounting area through a driving shaft of a cover body driving part.
An oil pipe insertion area is formed in the lower area of the sealing cover plate, a transportation cavity is formed in the sealing cover plate, a cleaning water injection pipe is installed in the center of the outer portion of the sealing cover plate, a cleaning high-pressure spray head is installed on the inner side of the sealing cover plate, discharge pipelines are installed on two sides of the lower portion of the concave placement area, and the discharge pipelines are three-way pipelines made in a Y shape.
The oil pipe cleaning mechanism is composed of five parts: the oil pipe cleaning cavity is arranged in a concave arrangement area of the rolling seal drawing-off cover, the oil pipe cleaning cavity is mainly arranged on the oil pipe cleaning body of the rolling base body, the oil pipe cleaning cavity is arranged in a circular array mode, the oil pipe cleaning cavity is not arranged in the lower area of the oil pipe cleaning body of the rolling base body, the whole oil pipe cleaning cavity is a horn cavity which is made in a circular mode, the oil pipe cleaning cavity corresponds to a cleaning high-pressure spray head of the rolling seal drawing-off cover, the cleaning high-pressure spray head corresponds to an inner cavity of an oil pipe, dirty water is discharged outside through the inclined horn cavity, cleaning and post-treatment are not needed, the cleaning and post-treatment can be directly carried out in the cleaning process, the steps of subsequent shutdown cleaning are reduced, the time influenced by shutdown is reduced in a range, and the subsequent speed of the whole is improved.
The oil pipe washs the inside one end in chamber and welds on the surface and be provided with the inlay card end, installs the body of hanging on the inlay card end, and the one end of the body of hanging the body of falling passes the oil pipe washing body of inlay card end and roll base member through the bearing and links to each other rather than outside washing drive assembly, hangs and is provided with the scraper on the body of falling, and the welding has the oil pipe card to put the body on the inboard region in oil pipe washing chamber, and the oil pipe card is put the body and is adopted the card board that the arc was made.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses the roll base member and the oil pipe wiper mechanism of oil pipe cleaning roller mechanism can directly carry out cleaning process to a plurality of oil pipe inner walls, and roll base member and oil pipe wiper mechanism adopt the mode of circular array gyro wheel to go on wasing oil pipe, and a plurality of oil pipe are accomodate to this mode type once and wash, improve abluent speed, and the number of times that will shut down many times is gathered together.
2. The utility model discloses the rolling seal of oil pipe cleaning roller mechanism is taken out and is blocked the restriction with oil pipe's one end then through self, avoids appearing oil pipe extrusion when scraping oil to oil pipe inside outside, and then improves this device and to oil pipe abluent security, reduces the emergence of potential safety hazard by a wide margin.
3. The utility model discloses oil pipe wiper mechanism of oil pipe cleaning roller mechanism then is the loudspeaker chamber through self slope and discharges dirty water outside, need not to wash back processing, can directly handle it at abluent in-process, reduces the step of follow-up shut down clearance, takes the range reduction to shut down the time that influences, improves holistic follow-up speed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of the oil pipe cleaning mechanism of the present invention.
Fig. 3 is a schematic diagram of a half-section structure of the oil pipe cleaning roller mechanism of the present invention.
In the figure:
the oil pipe cleaning device comprises an oil pipe cleaning roller mechanism 1, a rolling base body 2, a rolling sealing drawing-off cover 3, an oil pipe cleaning mechanism 4, an oil pipe cleaning body 5, a mounting welding base 6, a cleaning driving part 7, a cover body driving part 8, a concave placement area 9, a sealing cover plate 10, an oil pipe insertion area 11, a cleaning water injection pipe 12, a cleaning high-pressure spray head 13, a discharge pipeline 14, an oil pipe cleaning cavity 15, a clamping and embedding end 16, a hanging shaft body 17, an oil scraper 18 and an oil pipe clamping body 19.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figures 1 to 3:
the utility model provides a pair of oil pipe belt cleaning device for oil development, including oil pipe cleaning roller mechanism 1, the roll base member 2, roll seal takes out from lid 3, and oil pipe cleaning mechanism 4, oil pipe washs the body 5, and installation welding base 6 washs drive unit 7, and lid drive unit 8, sunken arrangement region 9, sealed apron 10, oil pipe insert region 11, washs water injection pipe 12, washs high pressure nozzle 13, discharge line 14, and oil pipe washs chamber 15, inlay card end 16, hangs down axis body 17, and oil scraper 18 and oil pipe card put 19, wherein: the oil pipe cleaning roller mechanism 1 mainly comprises three main structures: roll base member 2, roll seal take out from lid 3 and oil pipe wiper mechanism 4, roll seal take out lid 3 and oil pipe wiper mechanism 4 and all install to fix on roll base member 2, roll seal take out from lid 3 and oil pipe wiper mechanism 4 between mutually supporting use, roll base member 2's inside region installs oil pipe wiper mechanism 4, roll base member 2 comprises four part structures: oil pipe washs the body 5, installation welding base 6, wash driver part 7 and lid driver part 8, oil pipe washs the body 5 and adopts the lower extreme to be the cuboid that the arc was made, oil pipe washs the top welded mounting of the body 5 and has installation welding base 6, the mounting hole has been seted up in installation welding base 6's self four corners, oil pipe washs the rear surface of the body 5 and installs respectively and washes driver part 7 and lid driver part 8, it installs a plurality ofly to wash driver part 7 and be the mode of circular array, lid driver part 8 installs singly, wash driver part 7 and lid driver part 8 and take out lid 3 with oil pipe wiper mechanism 4 and roll seal respectively and be linked together.
The first embodiment is as follows:
an oil pipe insertion area 11 is arranged in the lower area of a sealing cover plate 10, a transportation cavity is arranged in the sealing cover plate 10, a cleaning water injection pipe 12 is arranged in the center of the outer portion of the sealing cover plate 10, a cleaning high-pressure spray head 13 is arranged on the inner side of the sealing cover plate 10, a discharge pipeline 14 is arranged on two sides of the lower portion of a concave placement area 9, an oil pipe cleaning cavity 15 is mainly formed in an oil pipe cleaning body 5 of a rolling base body 2, the oil pipe cleaning cavity 15 is formed in a circular array mode, a clamping and embedding end 16 is welded on the surface of one end of the inner portion of the oil pipe cleaning cavity 15, a hanging and falling shaft body 17 is arranged on the clamping and embedding end 16, one end of the hanging and falling shaft body 17 penetrates through the clamping and embedding end 16 through a bearing and the oil pipe cleaning body 5 of the rolling base body 2 to be connected with a cleaning driving part 7 outside the oil pipe cleaning body, an oil scraper 18 is arranged on the hanging and falling shaft body 17, and the rolling base body 2 and the oil pipe cleaning mechanism 4 of the oil pipe cleaning roller mechanism 1 can directly clean the inner walls of a plurality of oil pipes, the rolling base body 2 and the oil pipe cleaning mechanism 4 clean the oil pipes in a circular array roller mode, and the mode can accommodate a plurality of oil pipes for cleaning at one time, improve the cleaning speed and summarize the times of multiple times of machine halt; the rolling seal drawing-off cover 3 of the oil pipe cleaning roller mechanism 1 limits one end of an oil pipe in a blocking way by the rolling seal drawing-off cover, so that the phenomenon that the oil pipe is extruded outside when oil is scraped from the inside of the oil pipe is avoided, the safety of the device for cleaning the oil pipe is improved, and the potential safety hazard is greatly reduced; the oil pipe cleaning mechanism 4 of the oil pipe cleaning roller mechanism 1 discharges the dirty water outside through the self-inclined horn cavity, the dirty water is not required to be cleaned and can be directly treated in the cleaning process, the subsequent shutdown cleaning steps are reduced, the time influenced by shutdown is reduced in amplitude, and the integral subsequent speed is improved.
Example two:
the defects or problems proposed in the above background art are mainly solved by the rolling seal drawing cover 3 and the oil pipe cleaning mechanism 4 of the oil pipe cleaning roller mechanism 1: the oil pipe passes through an oil pipe inserting area 11 of a sealing cover plate 10 on a rolling sealing drawing-off cover 3 in a parallel mode through a crane, the oil pipe enters an oil pipe cleaning cavity 15 of an oil pipe cleaning mechanism 4, the inner wall of the oil pipe is contacted with an oil scraping knife 18 on a hanging shaft body 17, the outer wall of the oil pipe is contacted with the inner side of an oil pipe clamping body 19, after the oil pipe is placed, the rolling seal drawing cover 3 is reset to a proper position through the cover body driving part 8, the cleaning driving part 7 drives the hanging shaft body 17 of the oil pipe cleaning mechanism 4, the hanging shaft body 17 drives the oil scraping knife 18, the oil scraping knife 18 hangs dirt on the inner wall of the oil pipe, at the moment, the cleaning high-pressure spray head 13 is aligned with the oil pipe cleaning cavity 15 to spray cleaning water, the cleaning water is used for cleaning the oil pipe cleaning cavity 15, subsequently produced dirty water slides out along the horn-shaped oil pipe cleaning cavity 15 and enters the concave placement area 9, and the dirty water is discharged outside through a Y-shaped discharge pipeline 14 on the concave placement area 9.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (6)
1. The oil pipe cleaning device for oil exploitation comprises an oil pipe cleaning roller mechanism (1), and is characterized in that the oil pipe cleaning roller mechanism (1) mainly comprises three main structures: the oil pipe cleaning device comprises a rolling base body (2), a rolling seal drawing cover (3) and an oil pipe cleaning mechanism (4), wherein the rolling seal drawing cover (3) and the oil pipe cleaning mechanism (4) are installed and fixed on the rolling base body (2), the rolling seal drawing cover (3) and the oil pipe cleaning mechanism (4) are matched with each other for use, and the oil pipe cleaning mechanism (4) is installed in the inner area of the rolling base body (2).
2. The oil pipe cleaning device for oil extraction as set forth in claim 1, wherein: the rolling matrix (2) is composed of four parts: oil pipe washs the body (5), installation welding base (6), wash drive part (7) and lid drive part (8), oil pipe washs the body (5) and adopts the lower extreme to be the cuboid that the arc was made, the top welded mounting of oil pipe washing body (5) has installation welding base (6), the mounting hole has been seted up in the self four corners of installation welding base (6), the rear surface of oil pipe washing body (5) is installed respectively and is washed drive part (7) and lid drive part (8), it installs a plurality ofly to wash drive part (7) and be the mode of circular array, lid drive part (8) are installed singly, it links to each other together with oil pipe wiper mechanism (4) and roll seal pull-off lid (3) respectively to wash drive part (7) and lid drive part (8).
3. The oil pipe cleaning device for oil extraction as set forth in claim 1, wherein: the rolling seal drawing-off cover (3) is composed of six parts: sunken settling area (9), sealed apron (10), oil pipe inserted region (11), wash water injection pipe (12), wash high pressure nozzle (13) and discharge line (14), sunken settling area (9) are the sunken area that adopts circular making, sunken settling area (9) are seted up and are being managed the side surface position in oil pipe cleaning body (5) of rolling base member (2), sealed apron (10) are installed through the drive shaft of lid drive unit (8) to sunken settling area (9).
4. The oil pipe cleaning device for oil extraction as set forth in claim 3, wherein: an oil pipe insertion area (11) is formed in the area below the sealing cover plate (10), a transportation cavity is formed in the sealing cover plate (10), a cleaning water injection pipe (12) is installed in the center of the outer portion of the sealing cover plate (10), a cleaning high-pressure spray head (13) is installed on the inner side of the sealing cover plate (10), a discharge pipeline (14) is installed on the positions of the two sides below the concave placement area (9), and the discharge pipeline (14) is a three-way pipeline made in a Y shape.
5. The oil pipe cleaning device for oil extraction as set forth in claim 1, wherein: the oil pipe cleaning mechanism (4) is composed of five parts: oil pipe washs chamber (15), inlay card end (16), hang down axis body (17), frizing sword (18) and oil pipe card and puts body (19), oil pipe washs chamber (15) and sets up in the sealed sunken settling area (9) of taking out from lid (3) of rolling, oil pipe washs chamber (15) and mainly sets up on the oil pipe of the rolling base member (2) washs body (5), oil pipe washs chamber (15) and adopts the mode of circular array to set up, oil pipe washing chamber (15) have not been seted up in the below region of the oil pipe of the rolling base member (2) washs body (5).
6. The oil pipe cleaning device for oil extraction as set forth in claim 5, wherein: the oil pipe cleaning device is characterized in that a clamping and embedding end (16) is welded on the surface of one end inside the oil pipe cleaning cavity (15), a hanging and falling shaft body (17) is installed on the clamping and embedding end (16), one end of the hanging and falling shaft body (17) penetrates through the clamping and embedding end (16) and an oil pipe cleaning body (5) of the rolling base body (2) through a bearing to be connected with a cleaning driving part (7) outside the oil pipe cleaning body, an oil scraper (18) is arranged on the hanging and falling shaft body (17), an oil pipe clamping body (19) is welded on the inner side area of the oil pipe cleaning cavity (15), and the oil pipe clamping body (19) is a clamping plate made of an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221139098.5U CN217222789U (en) | 2022-05-13 | 2022-05-13 | Oil pipe belt cleaning device for oil development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221139098.5U CN217222789U (en) | 2022-05-13 | 2022-05-13 | Oil pipe belt cleaning device for oil development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217222789U true CN217222789U (en) | 2022-08-19 |
Family
ID=82823010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221139098.5U Expired - Fee Related CN217222789U (en) | 2022-05-13 | 2022-05-13 | Oil pipe belt cleaning device for oil development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217222789U (en) |
-
2022
- 2022-05-13 CN CN202221139098.5U patent/CN217222789U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |