CN108425403B - River course water intaking device - Google Patents
River course water intaking device Download PDFInfo
- Publication number
- CN108425403B CN108425403B CN201810223819.2A CN201810223819A CN108425403B CN 108425403 B CN108425403 B CN 108425403B CN 201810223819 A CN201810223819 A CN 201810223819A CN 108425403 B CN108425403 B CN 108425403B
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- pipe
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- conveying device
- spiral conveying
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 201
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 238000012856 packing Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 14
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 3
- 238000011045 prefiltration Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The river channel water taking device provided by the invention comprises a water taking pipe, wherein the water taking pipe is provided with a water absorbing end and a water discharging end, and the water absorbing end of the water taking pipe is provided with a filter net box; the water taking pipe is connected with a core-shaped conveying device downwards at the water discharging end, wherein a spindle of the core-shaped conveying device is outwards and transversely connected with a spiral conveying pipe, and the spindle of the core-shaped conveying device and a packing auger shaft of the spiral conveying pipe are coaxially arranged; the core type conveying device is downwards connected with a U-shaped pipe, and two straight pipe parts on the U-shaped pipe are respectively communicated with the core type conveying device and the spiral conveying pipe; the U-shaped pipe is of a mesh structure, and the sum of the sectional areas of meshes on the U-shaped pipe is larger than the pipe diameter sectional area of a water discharging end on the water taking pipe. The river channel water taking device is simple in structure and convenient to use, and achieves the function of unpowered cleaning of impurities contained in taken water when the river channel water taking device takes water.
Description
Technical Field
The invention belongs to the technical field of water taking related devices, and particularly relates to a riverway water taking device.
Background
It can be understood that in the industrial production process, there are situations where water needs to be taken from a river channel to an industrial water pool. At present, the prior art adopts the water pump to directly pump and arrange to the industry pond in the river course to the mode of following river course water to realize the purpose of getting water from the river course.
Wherein, the river course has inevitable to have different impurity, for this selects the colating that carries out the water intaking with the filterable mode of screen panel more, nevertheless the water pump is direct to get water from the river course, and filter with the screen panel, can have the water intaking mouth or go into the jam condition that the pond mouth filtered the screen panel, here need see the jam of clear screen panel according to the change of river course quality of water simultaneously, thereby lead to a large amount of drops into of manpower and materials, and increase the water intaking cost of enterprise, can not satisfy the user demand of enterprise well.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a riverway water taking device.
The river channel water taking device comprises a water taking pipe, wherein the water taking pipe is provided with a water absorbing end and a water discharging end, and the water absorbing end of the water taking pipe is provided with a filter net box; the water taking pipe is connected with a core-shaped conveying device downwards at the water discharging end, wherein a spindle of the core-shaped conveying device is outwards and transversely connected with a spiral conveying pipe, and the spindle of the core-shaped conveying device and a packing auger shaft of the spiral conveying pipe are coaxially arranged; the core type conveying device is downwards connected with a U-shaped pipe, and two straight pipe parts on the U-shaped pipe are respectively communicated with the core type conveying device and the spiral conveying pipe; the U-shaped pipe is of a mesh structure, and the sum of the sectional areas of meshes on the U-shaped pipe is larger than the pipe diameter sectional area of a water discharging end on the water taking pipe.
As a preferred scheme of the invention, the aperture of the mesh on the filtering net cage is larger than that of the mesh on the U-shaped pipe, and the sum of the sectional areas of the mesh on the filtering net cage is larger than the pipe diameter sectional area of the water suction end on the water intake pipe.
As a preferred scheme of the invention, the river water intake device further comprises a liquid level meter for limiting and monitoring the liquid level of the water pool where the water discharge end of the water intake pipe is located, and the core-shaped conveying device and the spiral conveying pipe are arranged above the liquid level of the water pool where the water discharge end of the water intake pipe is located.
As a preferable scheme of the invention, a feeding hole of the spiral conveying pipe is communicated with one straight pipe part of the U-shaped pipe, and a discharging hole is formed in the outer side of a water pool where a water discharging end of the water taking pipe is located.
As a preferable scheme of the invention, the spiral conveying pipe is provided with a material collecting box on the discharging port.
As a preferable scheme of the invention, the heart-shaped conveying device comprises a shell, a mandrel arranged at the central position of the shell and an impeller set arranged on the mandrel, wherein the mandrel extends outwards relative to the shell, and the part of the mandrel extending out of the shell extends into the spiral conveying pipe and is coaxially fixed with the auger shaft on the spiral conveying pipe.
As a preferred scheme of the invention, a shell of the heart-shaped conveying device is provided with a water inlet and a water outlet, wherein the water inlet is arranged above an impeller group in the shell, and the water outlet is arranged at the bottom end of the shell, so that water discharged from a water taking pipe drives a mandrel to rotate through the impeller group.
As a preferred scheme of the invention, the spiral conveying pipe comprises a pipe body and an auger shaft arranged in the pipe body, wherein the pipe body is fixedly connected with a shell of the heart-shaped conveying device, and a shaft body of the auger shaft is fixedly connected with the mandrel.
As a preferable scheme of the invention, a water pump is arranged on the water suction end of the water intake pipe.
Through the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the river channel water taking device claimed by the invention is simple in structure and convenient to use, and through reasonable structural arrangement of the heart-shaped conveying device, the spiral conveying pipe and the U-shaped pipe, the screw shaft of the spiral conveying pipe can be driven to rotate by utilizing the self gravity of water, impurities deposited in the U-shaped pipe can gradually enter the spiral conveying pipe by utilizing the structural characteristics of the U-shaped pipe and are conveyed to the outside by the screw shaft of the spiral conveying pipe, and the river channel water taking device does not need external power to clean the impurities, so that stable water taking is ensured; simultaneously, the end that absorbs water on the intake pipe sets up filter box with a net, has realized carrying out the prefilter to the impurity in river course, has ensured follow-up heart type conveyor, spiral delivery pipe and U type pipe to the self-filtration of getting river, further satisfies the user demand of enterprise to river course water intaking.
Drawings
Fig. 1 is a schematic structural diagram of a river water intake device provided by the present invention.
Fig. 2 is a schematic structural view of the center type conveying device of the invention.
Wherein, 10, a water intake pipe; 11. a water absorption end; 12. a water discharging end; 20. a heart-shaped delivery device; 21. A mandrel; 22. a housing; 23. an impeller assembly; 30. a spiral conveying pipe; 40. a U-shaped pipe; 50. a water pump; 60. a liquid level meter; 101. a river channel; 102. a pool; 111. a filter net cage; 221. a water inlet; 222. and (7) a water outlet.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the riverway water intaking device claimed in the present invention is used for intaking water from a riverway 101, and comprises a water intaking pipe 10, a heart-shaped conveying device 20, a spiral conveying pipe 30, a U-shaped pipe 40 and a water pump 50.
The water intake pipe 10 has a water suction end 11 and a water discharge end 12, and the water intake pipe 10 is applied to a river water intake device, specifically, the water suction end 11 of the water intake pipe 10 sucks water from the river 101 upwards, and then the water discharge end 12 discharges water downwards into the water pool 102, so that the river water intake device takes water from the river 101 and discharges the water into the water pool 102. It is understood that the water pump 40 is specifically disposed at the water suction end 11 of the water intake pipe 10 and is disposed at the position of the river channel 101 to provide power for the water intake pipe 10 to suck water from the river channel 101.
In this embodiment, the water suction end 11 of the water intake pipe 10 is provided with the filtering net box 111 to primarily filter the water sucked from the river 101 by the water intake pipe 10, so as to ensure the subsequent normal use of the river water intake device. The aperture of the mesh on the filtering net cage 111 is larger than the aperture of the mesh on the U-shaped pipe 40, and the sum of the cross sections of the meshes on the filtering net cage 111 is larger than the cross section area of the pipe diameter of the water suction end of the water intake pipe 10, so that river water is ensured to be sucked by the water suction end 11 of the water intake pipe 10 from the river channel 101, and the function of filtering impurities is achieved.
The heart-shaped conveying device 20, the spiral conveying pipe 30 and the U-shaped pipe 40 are specifically arranged on one side of the water discharging end 12 of the water taking pipe 10, so that the function of filtering impurities of water taken by the water taking pipe 10 from the river channel 101 is realized.
Specifically, the spindle 21 of the core type conveying device 20 is connected with the spiral conveying pipe 30 outwards, wherein the spindle 21 of the core type conveying device 20 and the auger shaft of the spiral conveying pipe 30 are coaxially arranged, so that the auger shaft (not shown) of the spiral conveying pipe 30 can be driven to rotate by the gravity of water in the process that the water discharging end 12 of the water taking pipe 10 discharges water downwards. The U-shaped pipe 40 is specifically assembled below the core type conveying device 20 and the spiral conveying pipe 30, and two straight pipe portions on the U-shaped pipe 40 are respectively communicated with the core type conveying device 20 and the spiral conveying pipe 30, in this embodiment, the U-shaped pipe 40 is specifically configured to be a mesh structure, and the sum of cross-sectional areas of meshes on the U-shaped pipe 40 is larger than the pipe diameter cross-sectional area of the water discharge end 12 on the water intake pipe 10, that is, water discharged from the water discharge end 12 of the water intake pipe 10 and passing through the core type conveying device 20 can completely leak out from the mesh on the U-shaped pipe 40.
In the embodiment, the heart-shaped conveying device 20 and the spiral conveying pipe 30 are applied to a river water taking device, and are particularly assembled at the position of the water pool 102, and the heart-shaped conveying device 20 and the spiral conveying pipe 30 are particularly arranged above the liquid level of water in the water pool 102. The river channel water intake device of the embodiment further includes a liquid level meter 60, and the liquid level meter 60 is used for limiting and monitoring the liquid level of the water in the water tank 102, so as to ensure that the heart-shaped conveying device 20 and the spiral conveying pipe 30 are always above the liquid level in the water tank 102.
Referring to fig. 2, the core type conveying device 20 includes a housing 22, a spindle 21 disposed at a central position of the housing 22, and an impeller assembly 23 disposed on the spindle 21, wherein the spindle 21 partially extends outward relative to the housing 22, and a portion of the spindle 21 extending out of the housing 22 extends into the spiral conveying pipe 30 and is coaxially fixed with the auger shaft on the spiral conveying pipe 30.
A water inlet 221 and a water outlet 222 are formed in the casing 22 of the heart-shaped conveying device 20, wherein the water inlet 221 is disposed above the impeller set 23 in the casing 22, and the water outlet 222 is disposed at the bottom end of the casing 22, so that water discharged from the water discharge end 12 of the water intake pipe 10 acts on the impeller set 23 of the heart-shaped conveying device 20 and drives the impeller set 23 to rotate, and the impeller set 23 rotates and simultaneously drives the mandrel 21 to rotate. The spindle 21 is coaxially fixed with the auger shaft on the spiral conveying pipe 30, so that the auger shaft is driven to rotate.
The spiral conveying pipe 30 comprises a pipe body (not shown) and an auger shaft arranged in the pipe body, wherein the pipe body is fixedly connected with the shell 22 of the heart-shaped conveying device 20, and the shaft body 1 on the auger shaft is fixedly connected with the spindle 21. In this embodiment, an inlet (not shown) of the spiral conveying pipe 30 is communicated with one of the straight pipe portions of the U-shaped pipe 40, an outlet is disposed outside the water tank 102 where the water discharge end 12 of the water intake pipe 10 is located, and further, the spiral conveying pipe 30 is provided with a collection box (not shown) at the outlet for collecting impurities discharged from the spiral conveying pipe 30.
As can be seen from the above, when the river channel water intake device of the present embodiment is used, the water pump 50 drives the water intake end 11 of the water intake pipe 10 to suck water from the river channel 101, and discharges water from the water discharge end 12 of the water intake pipe 10, wherein the water discharged from the water intake pipe 10 enters the housing 22 of the core type conveying device 20 from the water inlet 221 of the core type conveying device 20, and drives the impeller assembly 23 to rotate, and the water entering the core type conveying device 20 is discharged into the U-shaped pipe 40 from the water outlet 222 at the bottom of the housing 22, wherein the rotating impeller assembly 23 drives the spindle 21 to rotate, and simultaneously drives the auger shaft of the spiral conveying pipe 30 to rotate. Because the U-shaped pipe 40 is specifically designed into a mesh structure, water entering the U-shaped pipe 40 leaks into the water tank 102 from the meshes of the U-shaped pipe 40, the water is drained from the water tank 102, impurities in the water are retained in the U-shaped pipe 40, the retained impurities are exchanged at the bottom of the U-shaped pipe 40 by utilizing the structural characteristics of the U-shaped pipe 40 and are pushed to the spiral conveying pipe 30 from bottom to top, and enter the pipe body of the spiral conveying pipe 30 from the feeding port of the spiral conveying pipe 30, and finally, the impurities entering from the feeding port are discharged from the discharging port of the spiral conveying pipe 30 by utilizing the auger shaft of the spiral conveying pipe 30, so that the unpowered cleaning effect of the riverway water taking device is realized.
In conclusion, the river channel water taking device claimed by the invention is simple in structure and convenient to use, and through reasonable structural arrangement of the heart-shaped conveying device, the spiral conveying pipe and the U-shaped pipe, the screw shaft of the spiral conveying pipe can be driven to rotate by utilizing the self gravity of water, impurities deposited in the U-shaped pipe can gradually enter the spiral conveying pipe and are conveyed to the outside by the screw shaft of the spiral conveying pipe by utilizing the structural characteristics of the U-shaped pipe, and the river channel water taking device does not need external power to clean the impurities, so that stable water taking is ensured; simultaneously, the end that absorbs water on the intake pipe sets up filter box with a net, has realized carrying out the prefilter to the impurity in river course, has ensured follow-up heart type conveyor, spiral delivery pipe and U type pipe to the self-filtration of getting river, further satisfies the user demand of enterprise to river course water intaking.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a river course water intaking device which characterized in that: the water intake pipe is provided with a water suction end and a water discharge end, and the water suction end of the water intake pipe is provided with a filter net cage; the water taking pipe is connected with a core-shaped conveying device downwards at the water discharging end, wherein a spindle of the core-shaped conveying device is outwards and transversely connected with a spiral conveying pipe, and the spindle of the core-shaped conveying device and a packing auger shaft of the spiral conveying pipe are coaxially arranged; the core type conveying device is downwards connected with a U-shaped pipe, and two straight pipe parts on the U-shaped pipe are respectively communicated with the core type conveying device and the spiral conveying pipe; the heart-shaped conveying device comprises a shell, a mandrel arranged in the center of the shell and an impeller set arranged on the mandrel, wherein the mandrel extends outwards relative to the shell, and the part of the mandrel extending out of the shell extends into the spiral conveying pipe and is coaxially fixed with the auger shaft on the spiral conveying pipe; the U-shaped pipe is of a mesh structure, and the sum of the sectional areas of meshes on the U-shaped pipe is larger than the pipe diameter sectional area of a water discharging end on the water taking pipe.
2. The river water intake apparatus according to claim 1, wherein: the aperture of the mesh holes in the filter net cage is larger than that of the mesh holes in the U-shaped pipe, and the sum of the sectional areas of the mesh holes in the filter net cage is larger than the pipe diameter sectional area of the water suction end on the water intake pipe.
3. The river water intake apparatus according to claim 2, wherein: the river channel water taking device further comprises a liquid level meter for carrying out limiting monitoring on the liquid level of the water taking pipe water discharging end pool, and the core type conveying device and the spiral conveying pipe are arranged above the liquid level of the water taking pipe water discharging end pool.
4. The river water intake apparatus according to claim 3, wherein: the feed inlet of the spiral conveying pipe is communicated with one of the straight pipe parts of the U-shaped pipe, and the discharge outlet is formed in the outer side of the water pool where the water discharge end of the water taking pipe is located.
5. The river water intake apparatus according to claim 4, wherein: the spiral conveying pipe is provided with a material collecting box on the discharging port.
6. The river water intake apparatus according to claim 1, wherein: a water inlet and a water outlet are formed in a shell of the heart-shaped conveying device, the water inlet is arranged above the impeller group in the shell, and the water outlet is formed in the bottom end of the shell so that water discharged from the water taking pipe can drive the mandrel to rotate through the impeller group.
7. The river water intake apparatus according to claim 6, wherein: the spiral conveying pipe comprises a pipe body and an auger shaft arranged in the pipe body, wherein the pipe body is fixedly connected with a shell of the heart-shaped conveying device, and a shaft body of the auger shaft is fixedly connected with the mandrel.
8. The river water intake apparatus according to claim 1, wherein: and a water pump is arranged at the water suction end of the water taking pipe.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406205.9A CN110984297B (en) | 2018-03-19 | 2018-03-19 | Working method of self-purification water taking device |
| CN201911401003.5A CN111021469B (en) | 2018-03-19 | 2018-03-19 | Water intake device with automatic purification function |
| CN201810223819.2A CN108425403B (en) | 2018-03-19 | 2018-03-19 | River course water intaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223819.2A CN108425403B (en) | 2018-03-19 | 2018-03-19 | River course water intaking device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406205.9A Division CN110984297B (en) | 2018-03-19 | 2018-03-19 | Working method of self-purification water taking device |
| CN201911401003.5A Division CN111021469B (en) | 2018-03-19 | 2018-03-19 | Water intake device with automatic purification function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108425403A CN108425403A (en) | 2018-08-21 |
| CN108425403B true CN108425403B (en) | 2020-04-10 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406205.9A Active CN110984297B (en) | 2018-03-19 | 2018-03-19 | Working method of self-purification water taking device |
| CN201911401003.5A Active CN111021469B (en) | 2018-03-19 | 2018-03-19 | Water intake device with automatic purification function |
| CN201810223819.2A Active CN108425403B (en) | 2018-03-19 | 2018-03-19 | River course water intaking device |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406205.9A Active CN110984297B (en) | 2018-03-19 | 2018-03-19 | Working method of self-purification water taking device |
| CN201911401003.5A Active CN111021469B (en) | 2018-03-19 | 2018-03-19 | Water intake device with automatic purification function |
Country Status (1)
| Country | Link |
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| CN (3) | CN110984297B (en) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09276847A (en) * | 1996-04-11 | 1997-10-28 | Hitachi Ltd | Water purifying apparatus |
| RU2166030C1 (en) * | 1999-09-22 | 2001-04-27 | Курский государственный технический университет | Water intaking apparatus |
| US20040112846A1 (en) * | 2001-01-18 | 2004-06-17 | Nicholas Jackson | Filter |
| RU2215095C2 (en) * | 2001-11-05 | 2003-10-27 | Курский государственный технический университет | Water intake device |
| CN2917743Y (en) * | 2006-03-23 | 2007-07-04 | 福建闽泰环保有限公司 | Rotary drum type automatically flushing solid-liquid separator |
| CN202064393U (en) * | 2011-04-13 | 2011-12-07 | 浙江大学 | Water surface floating type raw water pumping device |
| CN203160320U (en) * | 2013-04-11 | 2013-08-28 | 枣庄市水利勘测设计院 | Automatic water-lifting system |
| CN203303751U (en) * | 2013-05-31 | 2013-11-27 | 江西省三余环保节能科技有限公司 | Spiral sand-water separator |
| CN203525437U (en) * | 2013-11-11 | 2014-04-09 | 湖州市千金宝云机械铸件有限公司 | Simple water purification device |
| CN106149802A (en) * | 2015-03-28 | 2016-11-23 | 扬州市大洋水务设备有限公司 | A kind of grid of water intake |
| CN106606902A (en) * | 2015-10-27 | 2017-05-03 | 王彩云 | Automatic discharge purification tank |
| CN205382476U (en) * | 2016-01-22 | 2016-07-13 | 华北电力大学（保定） | Pasture and water automatic clearing apparatus is used to power plant's water intaking ditch |
| CN205742351U (en) * | 2016-05-19 | 2016-11-30 | 中节能（常州）城市节能研究院有限公司 | A kind of reverse automatic clearing apparatus of water-fetching head |
| CN205815238U (en) * | 2016-06-26 | 2016-12-21 | 重庆耐德山花特种车有限责任公司 | Solid-liquid separation soil pick-up equipment |
| CN205839854U (en) * | 2016-07-18 | 2016-12-28 | 张正利 | Open water supply fire-fighting water intake facilities |
| CN206276109U (en) * | 2016-12-12 | 2017-06-27 | 上海蒙克环保科技有限公司 | Screw slag tap system |
| CN107115717A (en) * | 2017-07-04 | 2017-09-01 | 江苏中泉科技有限公司 | A kind of originally water pretreatment processing equipment |
-
2018
- 2018-03-19 CN CN201911406205.9A patent/CN110984297B/en active Active
- 2018-03-19 CN CN201911401003.5A patent/CN111021469B/en active Active
- 2018-03-19 CN CN201810223819.2A patent/CN108425403B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111021469B (en) | 2021-07-09 |
| CN110984297B (en) | 2020-11-10 |
| CN110984297A (en) | 2020-04-10 |
| CN111021469A (en) | 2020-04-17 |
| CN108425403A (en) | 2018-08-21 |
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