CN114412395A - Underground water well-flushing sampling equipment - Google Patents
Underground water well-flushing sampling equipment Download PDFInfo
- Publication number
- CN114412395A CN114412395A CN202210073861.7A CN202210073861A CN114412395A CN 114412395 A CN114412395 A CN 114412395A CN 202210073861 A CN202210073861 A CN 202210073861A CN 114412395 A CN114412395 A CN 114412395A
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- Prior art keywords
- water
- lifting part
- stirring
- flushing
- stirring piece
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 46
- 238000005070 sampling Methods 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 79
- 238000005406 washing Methods 0.000 claims abstract description 31
- 239000010865 sewage Substances 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims description 4
- 239000003673 groundwater Substances 0.000 claims 2
- 239000010802 sludge Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of well washing equipment, and provides underground water well washing sampling equipment which comprises a flushing pipe and a sewage draining device which are arranged on a lifting platform, and a water supply device connected with the flushing pipe, wherein the flushing pipe penetrates through the lifting platform, the underground water well washing sampling equipment also comprises a stirring piece which is rotatably arranged on the lifting platform, the stirring piece is provided with a water through cavity, the side wall of the stirring piece is provided with a plurality of water through holes, the water through holes are communicated with the water through cavity, the flushing pipe is positioned in the water through cavity, and the outer wall of the stirring piece is also provided with a stirring part. Through above-mentioned technical scheme, the problem that current clear water well-flushing equipment work efficiency is low among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of well washing equipment, in particular to underground water well washing sampling equipment.
Background
The well washing is a process that in the process of well repairing operation, well washing medium is injected by pumping equipment through a shaft or a drill rod to carry substances in the shaft to the ground so as to change the property of the medium in the shaft and meet the operation requirement.
The well washing method comprises the following steps: pumping clean water by using an original drilling pump, namely continuously circularly washing the well after replacing slurry by the clean water, and weighing the clean water to wash the well; stopping clear water circulation, continuously lifting up and down in a well pipe by using a piston to cause pressure excitation, damaging mud skins of a well wall, dredging pores of a aquifer, and weighing piston well washing; the piston well washing needs to be alternately and repeatedly carried out; before the pumping test, firstly, a centrifugal pump or a compressed air machine is used for pumping underground water to reach water cleanness and stably discharge water, and then the pumping test is carried out, namely pumping well flushing and compressed air well flushing; in addition, carbon dioxide is used for washing the well and acid washing the well.
Wherein, at the in-process of clear water well-flushing, the conventional setting is with well-flushing pump and inner tube connection, with the mud in the clear water high pressure flushing well, then the sewage pump after will washing the mixture is taken out, this kind of setting only relies on the clear water to strike mud and washs, on the one hand can not be fine with mud scattered the discharge, on the other hand work efficiency is low, washs the well and consumes time long, consequently needs to improve current equipment to improve its work efficiency.
Disclosure of Invention
The invention provides underground water well-flushing sampling equipment, which solves the problem that the existing clear water well-flushing equipment in the prior art is low in working efficiency.
The technical scheme of the invention is as follows:
a sampling device for washing underground water well comprises a flushing pipe and a sewage draining device which are arranged on a lifting platform, a water supply device connected with the flushing pipe, and a sampling device for sampling underground water, wherein the flushing pipe penetrates through the lifting platform,
the stirring piece is rotatably arranged on the lifting platform, the stirring piece is provided with a water through cavity, a plurality of water through holes are formed in the side wall of the stirring piece, the water through holes are communicated with the water through cavity, the flushing pipe is located in the water through cavity, and a stirring part is further arranged on the outer wall of the stirring piece.
As a further technical solution, the stirring member passes through the lifting platform, and divides the lifting platform into a first lifting portion and a second lifting portion, a gap is formed between the first lifting portion and the second lifting portion, the stirring member is located in the gap, the flushing pipe passes through the first lifting portion, the second lifting portion has an annular slide, and the stirring device further comprises,
a plurality of connecting pieces which are arranged above the stirring piece and are distributed around the circumference of the stirring piece,
wherein the first lifting part is connected to the second lifting part through a plurality of connecting pieces.
As a further technical solution, it also includes,
at least two brackets are oppositely arranged on the outer wall of the stirring piece,
the number of the rollers is at least two, one roller is arranged on each support, and after the stirring piece rotates, the rollers rotate in the annular slide way.
As a further technical scheme, the connecting piece is U-shaped.
As a further technical solution, it also includes,
a belt sleeved on the stirring piece and positioned below the connecting piece and used for driving the stirring piece to rotate,
and the rotating driving piece is arranged on the first lifting part or the second lifting part and used for driving the belt to rotate circularly.
As a further technical solution, the water supply device comprises,
a water tank is arranged in the water tank,
a water supply hose connected to the wash pipe,
and the water pump is positioned in the water tank and connected with the water supply hose, and the water pump is used for supplying water into the water supply hose.
As a further technical solution, the sewage draining device includes,
one end of the sewage discharge hose is communicated with the water tank,
the sewage pump is arranged on the first lifting part or the second lifting part and connected with the sewage hose, and the sewage pump is used for discharging sewage outwards.
The working principle and the beneficial effects of the invention are as follows:
in the invention, in order to solve the problem of low working efficiency of the existing clear water well washing equipment, the inventor designs underground water well washing equipment, the clear water is used for washing sludge in the well and then pumping out the sludge, compared with the prior art that the high-pressure spray head is directly used for washing the sludge to form muddy water, the underground water well washing equipment is additionally provided with the stirring piece, the sludge can be stirred while the high-pressure spray head is used for washing, the sludge can be effectively stirred and mixed with the clear water, and the well washing efficiency is greatly improved.
The stirring piece is integrally cylindrical, a spiral stirring part is arranged on the outer side wall, a water through cavity is arranged inside the stirring piece, a water through hole is formed in the outer side wall to open the water through cavity and the outside, the stirring piece is rotatably installed at the central position of the lifting platform, the lifting platform can be driven to lift by manpower or electricity, then the flushing pipe penetrates through the central position of the lifting platform and extends into the water through cavity, a water outlet can be additionally formed in the side wall of the flushing pipe, after the water supply device supplies water into the flushing pipe, water can be sprayed out from a high-pressure spray head of the flushing pipe and a water outlet in the side wall, the stirring piece can rotate to continuously stir, and part of the water can be sprayed out from the water through hole due to the water through hole in the side wall of the stirring piece, the stirring part of the stirring piece can be continuously cleaned, and stirred sludge diluted and muddy water can be fully mixed by the supplied water.
In conclusion, the design accelerates the well washing speed, and is more effective for sludge which is hard to clean.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic perspective view of a stirring member according to the present invention;
FIG. 4 is a schematic perspective view of another embodiment of the stirring member of the present invention;
FIG. 5 is a schematic view of a first lift portion of the present invention;
FIG. 6 is a schematic perspective view of a roller according to the present invention;
fig. 7 is an enlarged structural diagram of a part B in fig. 6.
In the figure: 1. the lifting platform comprises a lifting platform body, 101, a first lifting part, 102, a second lifting part, 103, an annular slide way, 2, a flushing pipe, 3, a stirring piece, 301, a water cavity, 302, a water through hole, 303, a stirring part, 4, a water supply device, 5, a sewage discharge device, 6, a connecting piece, 7, a support, 8, a roller, 9, a belt, 10, a rotary driving piece, 11, a water tank, 12, a water supply hose, 13, a water pump, 14, a sewage discharge hose, 15 and a sewage discharge pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1 to 7, the present embodiment provides a sampling apparatus for underground water well-flushing, which comprises a flushing pipe 2 and a pollution discharge device 5 arranged on a lifting platform 1, and a water supply device 4 connected to the flushing pipe 2, wherein the flushing pipe 2 is arranged through the lifting platform 1, and further comprises,
the stirring piece 3 is rotatably arranged on the lifting platform 1, the stirring piece 3 is provided with a water through cavity 301, the side wall of the stirring piece is provided with a plurality of water through holes 302, the water through holes 302 are communicated with the water through cavity 301, the flushing pipe 2 is positioned in the water through cavity 301, and the outer wall of the stirring piece 3 is also provided with a stirring part 303.
In this embodiment, in order to solve the problem that current clear water well-flushing equipment work efficiency is low, the inventor has designed an underground water well-flushing and has adopted equipment, use the silt in the clear water well-flushing then take out, compare and directly adopt high pressure nozzle to wash silt and form muddy water among the prior art, this underground water well-flushing adopts equipment to add and has established stirring piece 3, can stir silt when washing with high pressure nozzle, can effectively stir silt rotten and clear water mixture, the efficiency of well-flushing has been improved greatly.
As shown in fig. 3 and 4, the stirring member 3 may be designed to be a cylindrical shape as a whole or a frustum shape, the outer side wall has a spiral stirring portion 303, the inside is a water passage chamber 301, the outer side wall is provided with a water passage hole 302 to communicate the water passage chamber 301 with the outside, the stirring member 3 is rotatably mounted at the central position of the lifting platform 1, the lifting platform 1 can be lifted by manual or electric driving, the washing pipe 2 is inserted into the water passage chamber 301 through the central position of the lifting platform 1, the side wall of the washing pipe 2 may be provided with a water outlet, after the water supply device 4 supplies water into the washing pipe 2, water is sprayed from the high pressure nozzle of the washing pipe 2 and the water outlet on the side wall, the stirring member 3 rotates to continuously stir, and due to the water passage hole 302 on the side wall of the stirring member 3, part of the water is sprayed from the water passage hole 302, the stirring portion 303 of the stirring member 3 can be continuously cleaned, and the stirred sludge can be diluted and mixed into muddy water by fully supplying water.
In conclusion, the design accelerates the well washing speed, and is more effective for sludge which is hard to clean.
Further, the stirring member 3 passes through the lifting platform 1 to divide the lifting platform 1 into a first lifting part 101 and a second lifting part 102, a gap is formed between the first lifting part 101 and the second lifting part 102, the stirring member 3 is positioned in the gap, the flushing pipe 2 passes through the first lifting part 101, the second lifting part 102 is provided with an annular slide way 103, and the device also comprises,
a plurality of connecting pieces 6 are arranged above the stirring piece 3 and distributed around the circumference of the stirring piece 3,
wherein, the first lifting part 101 is connected to the second lifting part 102 by a plurality of connecting pieces 6.
Further, the method also comprises the following steps of,
at least two brackets 7 are oppositely arranged on the outer wall of the stirring piece 3,
the number of the rollers 8 is at least two, each support 7 is provided with one roller 8, and after the stirring piece 3 rotates, the rollers 8 rotate in the annular slide way 103.
As shown in fig. 3 to 7, in the present embodiment, in order to enable the stirring element 3 to be smoothly rotatably mounted on the lifting platform 1, the inventor divides the lifting platform 1 into two parts, namely, a first lifting part 101 and a second lifting part 102, wherein the lifting platform 1 can be a cylindrical plate, namely, the first lifting part 101 and the second lifting part 102 are also cylindrical, the first lifting part 101 and the second lifting part are fixedly connected by a connecting member 6, the connecting member 6 is located above the stirring element 3, the stirring element 3 is mounted in the annular regions of the first lifting part 101 and the second lifting part 102, namely, the first lifting part 101 is located inside the stirring element 3, then an annular groove is formed on the inner side wall of the second lifting part 102 located outside the stirring element 3, an annular slide way 103 is formed in the annular groove, the roller 8 is designed to roll in the annular slide way 103, and then the roller 8 is connected to the side wall of the stirring element 3 by the bracket 7, therefore, when the stirring part 3 rotates, the support 7 can support the stirring part 3, and the roller 8 can roll in the annular slideway 103 continuously to realize the free rotation of the stirring part 3.
Further, the connecting member 6 is U-shaped.
Further, the method also comprises the following steps of,
a belt 9, which is sleeved on the stirring piece 3 and is positioned below the connecting piece 6 and is used for driving the stirring piece 3 to rotate,
and the rotary driving piece 10 is arranged on the first lifting part 101 or the second lifting part 102 and is used for driving the belt 9 to circularly rotate.
In the embodiment, as shown in fig. 3 and 4, the inventor installs a rotary driving member 10 and a belt 9 on the lifting platform 1 for driving the stirring member 3 to rotate. And the connecting piece 6 is designed into a U shape, so that the belt 9 can penetrate out of the U-shaped hole of the connecting piece 6, and the integral rotation is not influenced.
Further, the water supply means 4 comprises,
the water tank (11) is provided with a water tank,
a water supply hose 12 connected to the wash pipe 2,
and a water pump 13 which is positioned in the water tank 11 and connected to the water supply hose 12, wherein the water pump 13 supplies water into the water supply hose 12.
Further, the sewage discharging device 5 includes,
one end of the sewage draining hose 14 is communicated with the water tank 11,
and a sewage pump 15 provided on the first elevating part 101 or the second elevating part 102 and connected to the sewage hose 14, the sewage pump 15 being for discharging sewage to the outside.
As shown in fig. 1 and 2, in the present embodiment, the inventor designs a water tank 11, a water supply hose 12 and a water pump 13 for continuously supplying water to the flushing pipe 2, designs a sewage discharge hose 14 and a sewage discharge pump 15 for pumping out sewage, and additionally, a plurality of water tanks 11 can be designed, and sewage can be discharged into one of the water tanks 11 for recycling after precipitation and filtration.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A sampling device for underground water well washing comprises a flushing pipe (2) and a pollution discharge device (5) which are arranged on a lifting platform (1), and a water supply device (4) which is connected with the flushing pipe (2), and is characterized in that the flushing pipe (2) penetrates through the lifting platform (1) and is also included,
stirring piece (3), it sets up to rotate on lift platform (1), stirring piece (3) have logical water cavity (301), and have a plurality of limbers (302) on the lateral wall, limbers (302) with logical water cavity (301) intercommunication, wherein, flushing pipe (2) are located logical water cavity (301) are interior, still have stirring portion (303) on stirring piece (3) outer wall.
2. A groundwater well washing sampling device according to claim 1, wherein the stirring member (3) passes through the lifting platform (1), dividing the lifting platform (1) into a first lifting part (101) and a second lifting part (102), a gap being formed between the first lifting part (101) and the second lifting part (102), the stirring member (3) being located in the gap, the flushing pipe (2) passing through the first lifting part (101), the second lifting part (102) having an annular slide (103), further comprising,
a plurality of connecting pieces (6) are arranged above the stirring piece (3) and distributed around the stirring piece (3) in the circumferential direction,
wherein the first lifting part (101) is connected to the second lifting part (102) by a number of said connectors (6).
3. The underground water well-flushing sampling device of claim 2, further comprising,
at least two brackets (7) are oppositely arranged on the outer wall of the stirring piece (3),
the number of the rollers (8) is at least two, one roller (8) is arranged on each support (7), and after the stirring piece (3) rotates, the rollers (8) rotate in the annular slide way (103).
4. A groundwater well-flushing sampling device as claimed in claim 3, characterized in that the connection piece (6) is U-shaped.
5. The underground water well-flushing sampling device of claim 3, further comprising,
a belt (9) sleeved on the stirring piece (3) and positioned below the connecting piece (6) and used for driving the stirring piece (3) to rotate,
and the rotary driving piece (10) is arranged on the first lifting part (101) or the second lifting part (102) and is used for driving the belt (9) to rotate circularly.
6. A subterranean well-flushing sampling device according to claim 2, wherein the water supply means (4) comprises,
a water tank (11),
a water supply hose (12) connected to the flush pipe (2),
and the water pump (13) is positioned in the water tank (11) and is connected with the water supply hose (12), and the water pump (13) is used for supplying water into the water supply hose (12).
7. A subterranean well-flushing sampling device according to claim 6, wherein the blow-down means (5) comprises,
a sewage discharge hose (14), one end of which is led into the water tank (11),
and the sewage pump (15) is arranged on the first lifting part (101) or the second lifting part (102) and is connected with the sewage hose (14), and the sewage pump (15) is used for discharging sewage outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073861.7A CN114412395B (en) | 2022-01-21 | 2022-01-21 | Underground water well-washing sampling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073861.7A CN114412395B (en) | 2022-01-21 | 2022-01-21 | Underground water well-washing sampling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412395A true CN114412395A (en) | 2022-04-29 |
| CN114412395B CN114412395B (en) | 2023-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202210073861.7A Active CN114412395B (en) | 2022-01-21 | 2022-01-21 | Underground water well-washing sampling equipment |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1682471A1 (en) * | 1989-08-22 | 1991-10-07 | Всесоюзный Научно-Исследовательский Институт Горной Механики Им.М.М.Федорова | Method for cleaning receiving wells of mine water pumping plant |
| US20040031603A1 (en) * | 2000-08-02 | 2004-02-19 | Yoshiyuki Minamijima | Underground water pumping device |
| CN104653131A (en) * | 2015-03-11 | 2015-05-27 | 四川恒溢石油技术服务有限公司 | Novel well flushing truck and use method thereof |
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| CN107939317A (en) * | 2017-11-27 | 2018-04-20 | 山东省邱集煤矿 | Hydrology hole hole cleaning device and application method |
| CN207436967U (en) * | 2017-11-28 | 2018-06-01 | 陕西晟大钻探科技有限公司 | Double direction clean-out rig of oil/water well |
| CN109827809A (en) * | 2019-01-24 | 2019-05-31 | 广西壮族自治区环境监测中心站 | A kind of dedicated well-flushing sampling pump of Novel underground monitoring water environment well |
| CN209654034U (en) * | 2019-01-26 | 2019-11-19 | 杭州中一检测研究院有限公司 | A kind of well-flushing sampler of sampled well |
| CN210033335U (en) * | 2019-02-19 | 2020-02-07 | 中铁北京工程局集团城市轨道交通工程有限公司 | Clear hole device of subway pile base |
| CN211474058U (en) * | 2020-01-21 | 2020-09-11 | 中国二十二冶集团有限公司 | Well washing device |
| CN212104275U (en) * | 2020-03-30 | 2020-12-08 | 福建省新华都工程有限责任公司 | Blast hole dredging device |
| CN212337234U (en) * | 2020-05-26 | 2021-01-12 | 中交（广州）建设有限公司 | Well washing device for subway deep foundation pit dewatering well |
-
2022
- 2022-01-21 CN CN202210073861.7A patent/CN114412395B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1682471A1 (en) * | 1989-08-22 | 1991-10-07 | Всесоюзный Научно-Исследовательский Институт Горной Механики Им.М.М.Федорова | Method for cleaning receiving wells of mine water pumping plant |
| US20040031603A1 (en) * | 2000-08-02 | 2004-02-19 | Yoshiyuki Minamijima | Underground water pumping device |
| CN104653131A (en) * | 2015-03-11 | 2015-05-27 | 四川恒溢石油技术服务有限公司 | Novel well flushing truck and use method thereof |
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| CN212337234U (en) * | 2020-05-26 | 2021-01-12 | 中交（广州）建设有限公司 | Well washing device for subway deep foundation pit dewatering well |
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| Publication number | Publication date |
|---|---|
| CN114412395B (en) | 2023-11-14 |
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