CN108869849B - Electromagnetic one-way valve with adjustable stop direction - Google Patents
Electromagnetic one-way valve with adjustable stop direction Download PDFInfo
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- CN108869849B CN108869849B CN201811060390.6A CN201811060390A CN108869849B CN 108869849 B CN108869849 B CN 108869849B CN 201811060390 A CN201811060390 A CN 201811060390A CN 108869849 B CN108869849 B CN 108869849B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
An electromagnetic one-way valve with adjustable cut-off direction comprises a first shell and a second shell which are connected with each other, wherein the first shell is provided with a first through hole, the second shell is provided with a fourth connecting hole communicated with the first through hole, the one-way valve further comprises a first valve core matched and connected with the first through hole in a sliding mode and a first spring for extruding the first valve core, the first valve core can seal the fourth connecting hole, the second shell is provided with a second through hole, the first shell is provided with a second connecting hole communicated with the second through hole, and the second connecting hole is communicated with the fourth connecting hole; the check valve further includes: the second valve core is matched and connected with the second through hole in a sliding mode, and the second spring extrudes the second valve core; the first electromagnet driving device is connected with the first shell and can drive the first valve core to be separated from the fourth connecting hole; and the second electromagnet driving device is connected with the second shell and can drive the second valve core to be separated from the second connecting hole.
Description
Technical Field
The invention relates to a one-way valve, in particular to an electromagnetic one-way valve with an adjustable stop direction.
Background
The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. The one-way valve has a straight-through type and a right-angle type.
Current check valve can only allow fluid to flow to a direction, realizes keeping opening when fluid flows at fixed direction, and fluid keeps ending when reverse flow, but under some circumstances, needs fluid to carry out the unidirectional flow in reverse, and fluid is by former delivery port to former water inlet unidirectional flow promptly, then at this moment, then needs reverse installation with the check valve, or uses two check valves, and the dismouting is wasted time and energy, and fluid flows out easily moreover, the polluted environment.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art, and providing a direction-adjustable electromagnetic check valve, which can conveniently control the direction of preventing the oil from flowing in the opposite direction.
In order to achieve the purpose, the invention adopts the following technical scheme: an electromagnetic one-way valve with adjustable cut-off direction comprises a first shell and a second shell which are connected with each other, wherein the first shell is provided with a first through hole, the second shell is provided with a fourth connecting hole communicated with the first through hole, the one-way valve further comprises a first valve core matched and connected with the first through hole in a sliding mode and a first spring for extruding the first valve core, the first valve core can seal the fourth connecting hole, the second shell is provided with a second through hole, the first shell is provided with a second connecting hole communicated with the second through hole, and the second connecting hole is communicated with the fourth connecting hole;
the electromagnetic check valve with the adjustable stopping direction further comprises:
the second valve core is matched and connected with the second through hole in a sliding mode, and the second spring presses the second valve core, and the second valve core can seal the second connecting hole;
the first electromagnet driving device is connected with the first shell and can drive the first valve core to be separated from the fourth connecting hole;
and the second electromagnet driving device is connected with the second shell and can drive the second valve core to be separated from the second connecting hole.
In addition, the invention also provides the following auxiliary technical scheme:
the first electromagnet driving device comprises a first armature, and a first pull rod is connected between the first armature and the first valve core.
The first electromagnet driving device comprises a first shell connected with the first shell and a first coil arranged in the first shell and used for driving the first armature to move.
The first electromagnet driving device further comprises a first handle located outside the first shell and connected with the first armature.
The second electromagnet driving device comprises a second armature, and a second pull rod is connected between the second armature and the second valve core.
The second electromagnet driving device further comprises a second shell connected with the second shell and a second coil arranged in the second shell and driving the second armature to move.
The second electromagnet driving device further comprises a second handle located outside the second shell and connected with the second armature.
The first shell is provided with a first flow through hole communicated with the first through hole and the second connecting hole.
The second shell is provided with a second flow through hole communicated with the second through hole and the fourth connecting hole, and the second flow through hole is matched with the first flow through hole.
The first shell is further provided with a first anti-back sleeve, the first spring is abutted between the first anti-back sleeve and the first valve core, the second shell is further provided with a second anti-back sleeve, and the second spring is abutted between the second anti-back sleeve and the second valve core.
Compared with the prior art, the invention has the advantages that: the electromagnetic one-way valve with the adjustable cut-off direction automatically changes the states of the first valve core and the second valve core through the electromagnet driving device, so that the one-way valve can conveniently control the direction of preventing the oil from reversely flowing, can achieve the states of complete conduction and cut-off, has more diversified functions, is simple and convenient to operate, has high reliability and is convenient to realize automation.
Drawings
Fig. 1 is a schematic view of the structure of the check valve of the present invention.
Fig. 2 is a left side view of the check valve of fig. 1.
Fig. 3 is a schematic structural view of the check valve of the present invention after the flow restriction direction is changed.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 1 and 2, the electromagnetic check valve with adjustable blocking direction according to a preferred embodiment of the present invention includes a first housing 10 and a second housing 50 connected to each other, the first housing 10 and the second housing 50 are connected by a flange, the first housing 10 and the second housing 50 are respectively provided with a first flange 11 and a second flange 51, which are matched with each other, and the first housing 10 and the second housing 50 are fastened together by bolts and nuts.
The electromagnetic check valve with adjustable cut-off direction of the present invention further includes a first electromagnet driving device 100 and a second electromagnet driving device 150 respectively connected to the first housing 10 and the second housing 50.
A first through hole 12 is formed in the end face of one end of the first shell 10, a first connecting hole 13 and a second connecting hole 14 are formed in the end face of the other end of the first shell 10, a first through hole 15 for communicating the first connecting hole 13 with the first through hole 12 is further formed in the first shell 10, and preferably, the first connecting hole 13 and the first through hole 15 are coaxially arranged; the second connection bore 14 communicates with the first through-flow bore 12 and is used for connecting an external oil line.
The second housing 50 has a structure similar to that of the first housing 10, wherein a second through hole 52 matching with the first through hole 12 is formed in an end face of one end of the second housing, a third connecting hole 53 and a fourth connecting hole 54 are formed in an end face of the other end of the second housing, a second through hole 55 communicating the third connecting hole 53 with the fourth connecting hole 54 is further formed in the second housing 50, and preferably, the third connecting hole 53 and the second through hole 55 are coaxially arranged; the fourth connection hole 54 communicates with the second through-hole 52, and is used for connecting an external oil line.
Preferably, after the first housing 10 and the second housing 50 are connected, the second connection hole 14 is coaxial with the second through hole 55; the fourth connection hole 54 is coaxial with the first through hole 15.
The check valve of the present invention further includes a first spool 16, a first anti-backup sleeve 17, a first pull rod 18, and a first spring 19.
Wherein the first valve core 16 is slidably fitted in the first through hole 15, and in one embodiment, the fitting relationship with the first through hole 15 can refer to the fitting relationship of the piston and the cylinder body of the oil cylinder in the prior art. One end of the first valve core 16 is provided with a first conical surface 71 capable of sealing the fourth connecting hole 54, the other end is provided with a first blind hole 70, and a first bottom surface 72 of the first blind hole 70 is further provided with a first screw hole 73 in threaded connection with the first pull rod 18. The first valve body 16 is further provided with a first through hole 75 that is in fluid communication with the first and second through holes 12, 52 in the radial direction.
One end of the first pull rod 18 is screwed in the first screw hole 73, and the other end of the first pull rod extends out of the first connection hole 13 to be connected with the first electromagnet driving device 100, and after the first electromagnet driving device 100 is powered on, the first pull rod 18 can be pulled outwards, so that the first valve core 16 is separated from the fourth connection hole 54.
The surface of the first connecting hole 13 is provided with threads, the first anti-backing sleeve 17 is in threaded connection with the first connecting hole 13, the first pull rod 18 is arranged in the first anti-backing sleeve 17 in a penetrating mode, and the first anti-backing sleeve 17 is provided with a first supporting surface 74.
The first spring 19 is disposed in the first blind hole 70, and is sleeved on the first pull rod 18, and two ends of the first spring respectively abut against the first supporting surface 74 and the first bottom surface 72. The first spring 19 applies a force to the first spool 16 in the direction of the fourth connection hole 54; so that the first valve spool 16 can abut against and seal the fourth connecting hole 54 when the first solenoid driving device 100 is not energized; when the first solenoid driving device 100 is powered on, the first solenoid driving device 100 can drive the first valve core 16 to be separated from the fourth connecting hole 54.
The check valve of the present invention further includes a second spool 56, a second anti-backup sleeve 57, a second pull rod 58, and a second spring 59.
Wherein the second valve core 56 is slidably engaged in the second through hole 55, and in one embodiment, the engagement relationship with the second through hole 55 is as the engagement relationship between the piston and the cylinder body of the oil cylinder in the prior art. One end of the second valve core 56 is provided with a second taper surface 81 capable of sealing the second connecting hole 14, the other end is provided with a second blind hole 80, and a second bottom surface 82 of the second blind hole 80 is further provided with a second screw hole 83 in threaded connection with the second pull rod 58. The second spool 56 is also provided with a second through-hole 85 in radial direction, which is in fluid communication with the first and second through- holes 12, 52.
One end of the second pull rod 58 is screwed in the second screw hole 83, and the other end of the second pull rod extends out of the third connecting hole 53 to be connected with the second electromagnet driving device 150, and the second electromagnet driving device 150 can pull the second pull rod 58 outwards after being electrified, so that the second valve core 56 is separated from the second connecting hole 14.
The surface of the third connecting hole 53 is provided with threads, the second anti-back sleeve 57 is connected in the third connecting hole 53 in a threaded manner, the second pull rod 58 penetrates through the second anti-back sleeve 57, and the second anti-back sleeve 57 is provided with a second supporting surface 84.
The second spring 59 is disposed in the second blind hole 80, and the second spring is sleeved on the second pull rod 58, and two ends of the second spring respectively abut against the second supporting surface 84 and the second bottom surface 82. The second spring 59 applies a force to the second spool 56 in the direction toward the second through hole 55; so that the second spool 56 can abut against and seal the second connecting hole 14 when the second electromagnet driving device 150 is not energized; when the second electromagnet driving device 150 is powered on, the second electromagnet driving device 150 can drive the second valve core 56 to be separated from the second connecting hole 14.
The first electromagnetic driving device 100 includes a first housing 101 attached to a side of the first casing 10, a first coil 102 disposed in the first housing 101, and a first armature 103 slidably fitted in the first housing 101 and driven by the first coil 102. The first armature 103 is connected to the first pull rod 18 at one end via a first link 104 and a connecting sleeve 105, and is provided with a second link 106 at the other end, and the second link 106 extends out of the first housing 101 and is provided with a first handle 107. When the first coil 102 is energized, the first armature 103 is driven to move outward, so that the first valve core 16 is out of contact with the fourth connecting hole 54, and when the first valve core 16 is de-energized, the first valve core returns to the original position under the action of the spring force (the energizing of the coil to drive the armature to move is well known in the art and is not described in detail herein). In addition, in some special cases, the first valve core 16 can also be opened by pulling the first handle 107 by hand.
The second electromagnet driving device 150 includes a second housing 151 connected to a side of the second casing 50, a second coil 152 disposed in the second housing 151, and a second armature 153 slidably coupled in the second housing 151 and driven by the second coil 152. One end of the second armature 153 is connected to the second pull rod 58 through a third connecting rod 154 and a connecting sleeve 155, and the other end is provided with a fourth connecting rod 156, and the fourth connecting rod 156 extends out of the second housing 151 and is provided with a second handle 157. After the second coil 152 is energized, the second armature 153 is driven to move outwards, so that the second valve core 56 is separated from the second connecting hole 14, and after the second coil is de-energized, the second valve core 56 returns to the original position under the action of the spring force. In addition, in some special cases, the second valve spool 56 can also be opened by pulling the second handle 157 by hand.
As shown in fig. 1, when the first electromagnet 100 is de-energized and the second electromagnet 150 is energized, the first valve core 16 abuts against the fourth connecting hole 54, and the second valve core 56 is separated from the second connecting hole 14, at this time, after the oil enters from the fourth connecting hole 54, the oil pushes away the first valve core 16 and flows out from the second connecting hole 14 through the first and second through holes 12, 52; if oil flows in from the second connecting hole 14, the pressure of the oil further presses the first valve element 16 against the fourth connecting hole 54 due to the first spring 19 pressing the first valve element 16 against the fourth connecting hole 54, so that the oil cannot flow into the fourth connecting hole 54, i.e., only the oil is allowed to flow in from the second connecting hole 14 and flow out from the fourth connecting hole 54.
Correspondingly, as shown in fig. 2, when the first electromagnet 100 is powered on and the second electromagnet 150 is powered off, the first valve core 16 is separated from the fourth connecting hole 54, and the second valve core 56 is abutted against the second connecting hole 14, at this time, after the oil enters from the second connecting hole 14, the oil can push the second valve core 56 open and flow out from the fourth connecting hole 54 through the first and second through- holes 12 and 52; if the oil flows in from the fourth connecting hole 54, the pressure of the oil further presses the second spool 56 against the second connecting hole 14 because the second spring 59 presses the second spool 56 against the second connecting hole 14, so that the oil cannot flow into the second connecting hole 14, that is, only the oil is allowed to flow in from the fourth connecting hole 54 and flow out from the second connecting hole 14.
Obviously, when the first and second electromagnets 100 and 150 are both powered, the first and second valve spools 10 and 50 are both in an open state, and the whole valve body is in a fully conductive state; when the first and second electromagnets 100 and 150 are both de-energized, the first and second valve elements 10 and 50 are respectively abutted against the fourth connection hole 54 and the second connection hole 14, and at this time, the entire valve body is in a completely closed state, i.e., the oil passage is cut off.
The electromagnetic one-way valve with the adjustable cut-off direction automatically changes the states of the first valve core and the second valve core through the electromagnet driving device, so that the one-way valve can conveniently control the direction of preventing the oil from reversely flowing, can achieve the states of complete conduction and cut-off, has more diversified functions, is simple and convenient to operate, has high reliability and is convenient to realize automation.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The electromagnetic one-way valve with the adjustable cut-off direction comprises a first shell (10) and a second shell (50) which are connected with each other, wherein the first shell (10) is provided with a first through hole (15), the second shell (50) is provided with a fourth connecting hole (54) communicated with the first through hole (15), the one-way valve further comprises a first valve core (16) matched and connected with the first through hole (15) in a sliding mode and a first spring (19) extruding the first valve core (16), and the first valve core (16) can seal the fourth connecting hole (54), and the electromagnetic one-way valve is characterized in that: the second shell (50) is provided with a second through hole (55), the first shell (10) is provided with a second connecting hole (14) communicated with the second through hole (55), and the second connecting hole (14) is communicated with the fourth connecting hole (54);
the electromagnetic check valve with the adjustable stopping direction further comprises:
a second valve core (56) matched with the second through hole (55) in a sliding mode and a second spring (59) pressing the second valve core (56), wherein the second valve core (56) can seal the second connecting hole (14);
the first electromagnet driving device (100) is connected with the first shell (10), and the first electromagnet driving device (100) can drive the first valve core (16) to be separated from the fourth connecting hole (54);
and the second electromagnet driving device (150) is connected with the second shell (50), and the second electromagnet driving device (150) can drive the second valve core (56) to be separated from the second connecting hole (14).
2. The electromagnetic check valve with adjustable cut-off direction according to claim 1, characterized in that: the first solenoid drive (100) comprises a first armature (103), and a first pull rod (18) is connected between the first armature (103) and the first valve element (16).
3. The electromagnetic check valve with adjustable cut-off direction according to claim 2, characterized in that: the first electromagnet driving device (100) comprises a first shell (101) connected with the first shell (10) and a first coil (102) which is arranged in the first shell (101) and drives the first armature (103) to move.
4. The electromagnetic check valve with adjustable cut-off direction according to claim 3, characterized in that: the first electromagnet drive (100) further comprises a first handle (107) located outside the first housing (10) and connected to the first armature (103).
5. The electromagnetic check valve with adjustable cut-off direction according to claim 1, characterized in that: the second electromagnet drive (150) comprises a second armature (153), and a second pull rod (58) is connected between the second armature (153) and the second valve core (56).
6. The electromagnetic check valve with adjustable cut-off direction according to claim 5, characterized in that: the second electromagnet driving device (150) further comprises a second outer shell (151) connected with the second shell (50) and a second coil (152) arranged in the second outer shell (151) and driving the second armature (153) to move.
7. The electromagnetic check valve with adjustable cut-off direction according to claim 6, characterized in that: the second electromagnet drive (150) further comprises a second handle (157) located outside the second housing (50) and connected to the second armature (153).
8. The electromagnetic check valve with adjustable cut-off direction according to claim 1, characterized in that: the first shell (10) is provided with a first flow through hole (75) communicated with the first through hole (15) and the second connecting hole (14).
9. The electromagnetic check valve with adjustable cut-off direction according to claim 8, characterized in that: the second casing (50) is provided with a second flow through hole (85) communicated with the second through hole (55) and the fourth connecting hole (54).
10. The electromagnetic check valve with adjustable cut-off direction according to claim 1, characterized in that: the first shell (10) is further provided with a first anti-back sleeve (17), the first spring (19) abuts between the first anti-back sleeve (17) and the first valve core (16), the second shell (50) is further provided with a second anti-back sleeve (57), and the second spring (59) abuts between the second anti-back sleeve (17) and the second valve core (56).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060390.6A CN108869849B (en) | 2018-09-12 | 2018-09-12 | Electromagnetic one-way valve with adjustable stop direction |
| PCT/CN2018/109868 WO2020051966A1 (en) | 2018-09-12 | 2018-10-11 | Electromagenetic check valve with adjustable cutoff direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060390.6A CN108869849B (en) | 2018-09-12 | 2018-09-12 | Electromagnetic one-way valve with adjustable stop direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869849A CN108869849A (en) | 2018-11-23 |
| CN108869849B true CN108869849B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060390.6A Active CN108869849B (en) | 2018-09-12 | 2018-09-12 | Electromagnetic one-way valve with adjustable stop direction |
Country Status (2)
| Country | Link |
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| CN (1) | CN108869849B (en) |
| WO (1) | WO2020051966A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027332B (en) * | 2018-09-12 | 2020-01-03 | 苏州丹顿机电有限公司 | Check valve with adjustable stop direction |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4458717A (en) * | 1983-03-14 | 1984-07-10 | Aeroquip Corporation | Cylinder cushion seal |
| US4974628A (en) * | 1989-06-08 | 1990-12-04 | Beckman Instruments, Inc. | Check valve cartridges with controlled pressure sealing |
| JPH11280939A (en) * | 1998-03-27 | 1999-10-15 | Keihin Corp | Solenoid valve |
| JP2000304153A (en) * | 1999-04-19 | 2000-11-02 | Honda Motor Co Ltd | Electromagnet actuator driving device |
| AT412303B (en) * | 2000-04-18 | 2004-12-27 | Hoerbiger Ventilwerke Gmbh | VALVE |
| CN201666393U (en) * | 2009-12-16 | 2010-12-08 | 中国长江航运集团南京金陵船厂 | Double-pole one-way valve device |
| CN105240577B (en) * | 2015-09-06 | 2017-09-08 | 常州大学 | A kind of remote measurement and control flow divider and shunt controller |
| US9810336B2 (en) * | 2015-10-08 | 2017-11-07 | National Coupling Company | Subsea BOP control system with dual-action check valve |
| CN205298651U (en) * | 2015-12-28 | 2016-06-08 | 重庆耐德节能装备有限公司 | Pressure fluid self -commutation device |
| DE202016100164U1 (en) * | 2016-01-14 | 2017-04-20 | Eto Magnetic Gmbh | Electromagnetic valve device, use of such and system |
| CN205877312U (en) * | 2016-06-20 | 2017-01-11 | 广东铃木智能科技有限公司 | Surge damping valve for gas heater |
| CN206846000U (en) * | 2017-04-26 | 2018-01-05 | 许一鸣 | Automatic reverse check valve |
| CN206816920U (en) * | 2017-06-26 | 2017-12-29 | 广州市海纶特精机有限公司 | A kind of electrohydraulic proportional velocity regulating valve |
| CN107091362B (en) * | 2017-06-28 | 2023-06-09 | 哈尔滨工程大学 | Coaxial double-electromagnetic fuel gas injection valve with adjustable cross-sectional flow area |
| CN206816386U (en) * | 2017-06-28 | 2017-12-29 | 哈尔滨工程大学 | A kind of double electromagnetism fuel gas injection valves of adjustable actual internal area coaxial-type |
| CN207131916U (en) * | 2018-01-29 | 2018-03-23 | 谭振达 | A kind of load-sensitive proportional multi-way valve pilot control stabilizing hydraulic pressure damper |
| CN109083876B (en) * | 2018-09-12 | 2020-05-01 | 苏州丹顿机电有限公司 | Balance loop using electromagnetic one-way valve with adjustable stopping direction |
| CN109027338B (en) * | 2018-09-12 | 2020-03-10 | 苏州丹顿机电有限公司 | Locking loop using electromagnetic one-way valve with adjustable stopping direction |
-
2018
- 2018-09-12 CN CN201811060390.6A patent/CN108869849B/en active Active
- 2018-10-11 WO PCT/CN2018/109868 patent/WO2020051966A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869849A (en) | 2018-11-23 |
| WO2020051966A1 (en) | 2020-03-19 |
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