CN214676930U - Buried telescopic sprinkling irrigation device - Google Patents
Buried telescopic sprinkling irrigation device Download PDFInfo
- Publication number
- CN214676930U CN214676930U CN202120485335.2U CN202120485335U CN214676930U CN 214676930 U CN214676930 U CN 214676930U CN 202120485335 U CN202120485335 U CN 202120485335U CN 214676930 U CN214676930 U CN 214676930U
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- Prior art keywords
- pipe
- buried
- telescopic
- wall
- outer sleeve
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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
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- 230000002262 irrigation Effects 0.000 title claims abstract description 33
- 238000003973 irrigation Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 210000004907 gland Anatomy 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 210000002445 nipple Anatomy 0.000 claims 1
- 230000003019 stabilising effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 14
- 239000007921 spray Substances 0.000 description 12
- 238000004891 communication Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000003621 irrigation water Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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Abstract
The utility model relates to the technical field of sprinkling irrigation devices, in particular to a buried telescopic sprinkling irrigation device; the device can stretch up and down in the spraying process, the water quantity in the spraying range is uniformly distributed, and the spraying effect is better; including the buried pipe, be responsible for, flexible pipe, first outer tube, the second outer tube, annular piston, the extension spring, first communicating pipe, the second communicating pipe, venturi choke and water distribution mechanism, be responsible for fixed mounting on the buried pipe, be responsible for and the inside intercommunication of buried pipe, flexible pipe slidable from top to bottom sets up in the main pipe, first outer tube cover is located on the outer wall of main pipe, be provided with smooth chamber between first outer tube inner wall and the main pipe outer wall, the second outer tube cover is located on the outer wall of flexible pipe, annular piston is fixed to be set up in the sheathed tube bottom of second, the output of first communicating pipe stretches into to smooth intracavity bottom, be provided with first solenoid valve on the first communicating pipe, be provided with the second solenoid valve on the second communicating pipe.
Description
Technical Field
The utility model relates to a sprinkling irrigation equipment's technical field especially relates to a bury formula flexible sprinkling irrigation equipment.
Background
As is well known, a buried telescopic sprinkler irrigation device is a water spraying mechanism for spraying irrigation on land; publication (announcement) No. CN206602956U discloses an anti-shaking buried telescopic sprinkling irrigation water outlet device, which comprises a casing buried underground, a bottom fixing seat connected to the bottom of the casing, and a fixing seat fixed on the ground and connected with the upper end of the casing; the method is characterized in that: it also comprises a spray rod which is directly inserted into the water outlet device and is connected with the bottom fixed seat during sprinkling irrigation and a spray head component which is detachably connected with the top of the spray rod. After the structure is adopted, on one hand, the spray rod is firmly connected, the sprinkling irrigation quality is ensured, on the other hand, a tripod is omitted, and the sprinkling irrigation investment cost and the labor cost of sprinkling irrigation equipment during installation and disassembly are greatly saved; however, in use, the sprinkling irrigation device is fixed in height after being adjusted in a telescopic mode, the diameter of the sprayed annular water ring is fixed, and the difference of the spraying water quantity in the annular water ring is large, so that uneven spraying is caused, and certain use limitation is caused.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a can stretch out and draw back from top to bottom spraying the in-process, sprinkling irrigation within range water volume evenly distributed buries formula sprinkling irrigation equipment that stretches out and draws back with sprinkling irrigation effect is better.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the underground water distribution device comprises an underground pipe, a main pipe, a telescopic pipe, a first outer sleeve, a second outer sleeve, an annular piston, a tension spring, a first communicating pipe, a second communicating pipe, a Venturi throat and a water distribution mechanism, wherein the main pipe is fixedly arranged on the underground pipe, the main pipe is communicated with the inside of the underground pipe, the telescopic pipe can be arranged in the main pipe in a vertical sliding manner, the first outer sleeve is sleeved on the outer wall of the main pipe, a sliding cavity is arranged between the inner wall of the first outer sleeve and the outer wall of the main pipe, the second outer sleeve is sleeved on the outer wall of the telescopic pipe, the annular piston is fixedly arranged at the bottom of the second outer sleeve, the annular piston can be arranged in the sliding cavity in a vertical sliding manner, the annular piston is tightly contacted with the outer wall of the main pipe and the inner wall of the first outer sleeve, the bottom end of the annular piston is fixedly connected with the inner wall of the bottom end of the sliding cavity through the tension spring, the tension spring is sleeved on the outer wall of the main pipe, and the input end of the Venturi throat is communicated with the output end of the underground pipe, the input of first communicating pipe and the intraductal right part intercommunication of burying, the output of first communicating pipe stretches into to the bottom in the sliding chamber, be provided with first solenoid valve on the first communicating pipe, the input of second communicating pipe stretches into to the bottom in the sliding chamber, the output of second communicating pipe and the input intercommunication of venturi choke, be provided with the second solenoid valve on the second communicating pipe, the rotatable output of installing in flexible pipe of water distribution mechanism.
Preferably, the water distribution mechanism includes pivot, impeller and splash lug, the pivot is rotatable to be set up in the central axis department of flexible pipe output, and the bottom of pivot stretches into to flexible intraductal, impeller fixed mounting is in the bottom of pivot, splash lug fixed mounting in the top of pivot, the bottom middle part of splash lug is protruding downwards, and it is stupefied to be provided with two sets of bulges on the splash lug.
Preferably, the fixing device further comprises a fixing disc fixedly arranged at the bottom end of the main pipe.
Preferably, the bottom end of the stabilizing disc is fixedly provided with an earth anchor.
Preferably, the device further comprises a gland, and the gland is detachably connected with the top end of the first outer sleeve through a bolt.
Preferably, the right end of the ground pipe and the left end of the venturi throat are both provided with a union joint.
(III) advantageous effects
Compared with the prior art, the utility model provides a bury formula sprinkling irrigation equipment that stretches out and draws back possesses following beneficial effect: the buried telescopic sprinkling irrigation device is characterized in that the input end of a buried pipe is communicated with an external irrigation pipe network, the lower part of a first outer sleeve is buried in soil, when sprinkling irrigation is carried out, a pressure water source is sprayed to a water distribution mechanism through the buried pipe, a main pipe and a telescopic pipe, an annular spraying ring is formed under the action of the water distribution mechanism, a first electromagnetic valve is opened, part of the pressure water source enters a sliding cavity through a first communication pipe, an annular piston moves upwards along the sliding cavity under the action of water pressure, the telescopic pipe extends from the main pipe after being transmitted by a second outer sleeve, the spraying height is changed, the spraying surface of the annular spraying ring is changed, after the telescopic pipe extends to an extreme position, the first electromagnetic valve is closed, a second electromagnetic valve is opened, the pressure water source passes through a venturi throat, negative pressure is generated at the input end of the top end of the venturi throat, and the annular piston moves downwards under the action of a tension spring, thereby make the water in the sliding chamber extruded, and flexible pipe retracts to initial position, so reciprocating cycle makes the output of flexible pipe spray highly to change to make the annular spray the water in the circle more for the homodisperse distribution, make the water volume evenly distributed in the sprinkling irrigation scope, the sprinkling irrigation effect is better.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic view of the front view internal cross-section of the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of the water distribution mechanism of the present invention;
in the drawings, the reference numbers: 1. a buried pipe; 2. a main pipe; 3. a telescopic pipe; 4. a first outer sleeve; 5. a second outer sleeve; 6. an annular piston; 7. a tension spring; 8. a first communication pipe; 9. a second communicating pipe; 10. a venturi throat; 11. a water distribution mechanism; 12. a first solenoid valve; 13. a second solenoid valve; 14. a rotating shaft; 15. an impeller; 16. sputtering a bump; 17. convex edge; 18. a stabilizing disc; 19. ground anchor bolts; 20. a gland; 21. the union is connected.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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 work belong to the protection scope of the present invention.
Referring to fig. 1-3, the utility model relates to a buried telescopic sprinkling irrigation device, which comprises a buried pipe 1, a main pipe 2, a telescopic pipe 3, a first outer sleeve 4, a second outer sleeve 5, an annular piston 6, a tension spring 7, a first communicating pipe 8, a second communicating pipe 9, a venturi throat 10 and a water distribution mechanism 11, wherein the main pipe 2 is fixedly arranged on the buried pipe 1, the main pipe 2 is communicated with the buried pipe 1, the telescopic pipe 3 is arranged in the main pipe 2 in a vertically sliding manner, the first outer sleeve 4 is sleeved on the outer wall of the main pipe 2, a sliding cavity is arranged between the inner wall of the first outer sleeve 4 and the outer wall of the main pipe 2, the second outer sleeve 5 is sleeved on the outer wall of the telescopic pipe 3, the annular piston 6 is fixedly arranged at the bottom of the second outer sleeve 5, the annular piston 6 is arranged in the sliding cavity in a vertically sliding manner, the annular piston 6 is in close contact with the outer wall of the main pipe 2 and the inner wall of the first outer sleeve 4, the bottom end of the annular piston 6 is fixedly connected with the inner wall of the bottom end of the sliding cavity through a tension spring 7, the tension spring 7 is sleeved on the outer wall of the main pipe 2, the input end of the right end of the Venturi throat 10 is communicated with the output end of the buried pipe 1, the input end of the first communicating pipe 8 is communicated with the inner right part of the buried pipe 1, the output end of the first communicating pipe 8 extends into the inner bottom of the sliding cavity, a first electromagnetic valve 12 is arranged on the first communicating pipe 8, the input end of the second communicating pipe 9 extends into the inner bottom of the sliding cavity, the output end of the second communicating pipe 9 is communicated with the input end of the Venturi throat 10, a second electromagnetic valve 13 is arranged on the second communicating pipe 9, and the water distribution mechanism 11 is rotatably arranged at the output end of the telescopic pipe 3; when the sprinkling irrigation is carried out, a pressurized water source is sprayed to the position of a water distribution mechanism 11 through the buried pipe 1, a main pipe 2 and a telescopic pipe 3 after the input end of the buried pipe 1 is communicated with an external irrigation pipe network, an annular spraying ring is formed under the action of the water distribution mechanism 11, a first electromagnetic valve 12 is opened, a part of the pressurized water source enters a sliding cavity through a first communication pipe 8, an annular piston 6 moves upwards along the sliding cavity under the action of water pressure, the telescopic pipe 3 extends from the main pipe 2 after being transmitted by a second outer sleeve 5, the spraying height is changed, the spraying surface of the annular spraying ring is changed, after the telescopic pipe 3 extends to a limit position, the first electromagnetic valve 12 is closed, a second electromagnetic valve 13 is opened, after the pressurized water source passes through a venturi 10, the input end of the venturi 10 generates negative pressure, under the action of a tension spring 7, the annular piston 6 moves down, thereby the water in the sliding cavity is extruded, the telescopic pipe 3 retracts to the initial position, the reciprocating circulation is carried out, the spraying height of the output end of the telescopic pipe 3 is changed, the water in the annular spraying ring is more uniformly distributed, the water quantity in the spraying range is uniformly distributed, and the spraying effect is better.
The utility model discloses a buried telescopic sprinkling irrigation device, water distribution mechanism 11 include pivot 14, impeller 15 and splash lug 16, pivot 14 can rotate and set up in the central axis department of flexible pipe 3 output, the bottom of pivot 14 stretches into in flexible pipe 3, impeller 15 is fixed mounting in the bottom of pivot 14, splash lug 16 is fixed mounting in the top of pivot 14, the bottom middle part of splash lug 16 is protruding downwards, be provided with two sets of protruding stupefied 17 on the splash lug 16; after pressurized water in the extension tube 3 passes through the impeller 15, the impeller 15 rotates, the splash bump 16 rotates after being driven by the rotating shaft 14, under the action of the convex edge 17, the water sprayed from the top of the extension tube 3 can be uniformly sprayed out in a dispersed manner, so that the spray irrigation water is distributed in an annular surface shape, the spray area is increased, and the uniform distribution rate of the spray water is improved; the fixing device also comprises a stabilizing disc 18, wherein the stabilizing disc 18 is fixedly arranged at the bottom end of the main pipe 2; the stabilizing disc 18 is buried underground, so that the contact area between the device and the ground can be increased, the stability of the device is better, and the device is not easy to incline; the bottom end of the stabilizing disc 18 is fixedly provided with a ground anchor 19; the ground anchor nail 19 is inserted into the soil, so that the overall stability of the device is further improved, and the device is prevented from shifting; the pressing cover 20 is detachably connected with the top end of the first outer sleeve 4 through a bolt; the arrangement of the gland 20 can limit the annular piston 6, so that the annular piston 6 is prevented from moving out of the sliding cavity due to overlarge water pressure, the gland 20 is connected with the first outer sleeve 4 through the piston, the disassembly and the maintenance can be conveniently carried out, and the cleaning of sundries in the sliding cavity or the main pipe 2 is convenient; the right end of the buried pipe 1 and the left end of the Venturi throat 10 are both provided with a union joint 21; through the setting by arbitrary joint 21, can be convenient for with buried pipe 1 and venturi choke 10 and outside irrigation pipe network intercommunication, need not realize convenient installation with the help of the instrument.
When in use, the input end of the buried pipe 1 is communicated with an external irrigation pipe network, the lower part of the first outer sleeve 4 is buried in soil, when in sprinkling irrigation, a pressurized water source is sprayed to the position of the water distribution mechanism 11 through the buried pipe 1, the main pipe 2 and the extension pipe 3, an annular spraying ring is formed under the action of the water distribution mechanism 11, the first electromagnetic valve 12 is opened, part of the pressurized water source enters the sliding cavity through the first communication pipe 8, the annular piston 6 moves upwards along the sliding cavity under the action of water pressure, the extension pipe 3 extends from the main pipe 2 after being transmitted by the second outer sleeve 5, so that the spraying height is changed, the spraying surface of the annular spraying ring is changed, after the extension pipe 3 extends to the extreme position, the first electromagnetic valve 12 is closed, the second electromagnetic valve 13 is opened, the pressurized water source generates negative pressure at the input end of the top end of the venturi throat 10 after passing through the venturi throat 10, under the action of the tension spring 7, the annular piston 6 moves downwards, so that water in the sliding cavity is extruded out, the telescopic pipe 3 retracts to the initial position, and the reciprocating circulation is carried out, so that the spraying height of the output end of the telescopic pipe 3 is changed, the water in the annular spraying ring is distributed uniformly, the water quantity in the spraying range is distributed uniformly, and the spraying effect is better; after pressurized water in the extension tube 3 passes through the impeller 15, the impeller 15 rotates, the splash bump 16 rotates after being driven by the rotating shaft 14, under the action of the convex edge 17, the water sprayed from the top of the extension tube 3 can be uniformly sprayed out in a dispersed manner, so that the spray irrigation water is distributed in an annular surface shape, the spray area is increased, and the uniform distribution rate of the spray water is improved; the stabilizing disc 18 is buried underground, so that the contact area between the device and the ground can be increased, the stability of the device is better, and the device is not easy to incline; the ground anchor nail 19 is inserted into the soil, so that the overall stability of the device is further improved, and the device is prevented from shifting; the arrangement of the gland 20 can limit the annular piston 6, so that the annular piston 6 is prevented from moving out of the sliding cavity due to overlarge water pressure, the gland 20 is connected with the first outer sleeve 4 through the piston, the disassembly and the maintenance can be conveniently carried out, and the cleaning of sundries in the sliding cavity or the main pipe 2 is convenient; through the setting by arbitrary joint 21, can be convenient for with buried pipe 1 and venturi choke 10 and outside irrigation pipe network intercommunication, need not realize convenient installation with the help of the instrument.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A buried telescopic sprinkling irrigation device is characterized by comprising a buried pipe (1), a main pipe (2), a telescopic pipe (3), a first outer sleeve (4), a second outer sleeve (5), an annular piston (6), a tension spring (7), a first communicating pipe (8), a second communicating pipe (9), a Venturi throat (10) and a water distribution mechanism (11), wherein the main pipe (2) is fixedly arranged on the buried pipe (1), the main pipe (2) is communicated with the buried pipe (1), the telescopic pipe (3) is arranged in the main pipe (2) in a vertically sliding manner, the first outer sleeve (4) is sleeved on the outer wall of the main pipe (2), a sliding cavity is arranged between the inner wall of the first outer sleeve (4) and the outer wall of the main pipe (2), the second outer sleeve (5) is sleeved on the outer wall of the telescopic pipe (3), and the annular piston (6) is fixedly arranged at the bottom of the second outer sleeve (5), the annular piston (6) can be arranged in the sliding cavity in a vertically sliding mode, the annular piston (6) is in close contact with the outer wall of the main pipe (2) and the inner wall of the first outer sleeve (4), the bottom end of the annular piston (6) is fixedly connected with the inner wall of the bottom end of the sliding cavity through a tension spring (7), the outer wall of the main pipe (2) is sleeved with the tension spring (7), the input end of the right end of the Venturi throat (10) is communicated with the output end of the buried pipe (1), the input end of the first communicating pipe (8) is communicated with the inner right part of the buried pipe (1), the output end of the first communicating pipe (8) extends into the inner bottom of the sliding cavity, a first electromagnetic valve (12) is arranged on the first communicating pipe (8), the input end of the second communicating pipe (9) extends into the inner bottom of the sliding cavity, the output end of the second communicating pipe (9) is communicated with the input end of the Venturi throat (10), and a second electromagnetic valve (13) is arranged on the second communicating pipe (9), the water distribution mechanism (11) is rotatably arranged at the output end of the telescopic pipe (3).
2. The buried telescopic sprinkling irrigation device according to claim 1, wherein the water distribution mechanism (11) comprises a rotating shaft (14), an impeller (15) and a splashing lug (16), the rotating shaft (14) is rotatably arranged at the central axis of the output end of the telescopic pipe (3), the bottom of the rotating shaft (14) extends into the telescopic pipe (3), the impeller (15) is fixedly arranged at the bottom end of the rotating shaft (14), the splashing lug (16) is fixedly arranged at the top end of the rotating shaft (14), the middle part of the bottom end of the splashing lug (16) protrudes downwards, and two groups of protruding ridges (17) are arranged on the splashing lug (16).
3. A buried telescopic sprinkler installation according to claim 2, further including a stabilizing disc (18), said stabilizing disc (18) being fixedly mounted to the bottom end of said main pipe (2).
4. A buried telescopic sprinkler installation according to claim 3, characterised in that the bottom end of the stabilising disc (18) is fixedly mounted with ground anchor studs (19).
5. The buried telescopic sprinkler irrigation device according to claim 4, further comprising a gland (20), wherein the gland (20) is detachably connected with the top end of the first outer sleeve (4) through bolts.
6. A buried telescopic sprinkler according to claim 5, characterised in that the right end of the buried pipe (1) and the left end of the venturi throat (10) are both fitted with union nipples (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485335.2U CN214676930U (en) | 2021-03-08 | 2021-03-08 | Buried telescopic sprinkling irrigation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485335.2U CN214676930U (en) | 2021-03-08 | 2021-03-08 | Buried telescopic sprinkling irrigation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214676930U true CN214676930U (en) | 2021-11-12 |
Family
ID=78569834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120485335.2U Expired - Fee Related CN214676930U (en) | 2021-03-08 | 2021-03-08 | Buried telescopic sprinkling irrigation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214676930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431114A (en) * | 2022-01-14 | 2022-05-06 | 江西旺来科技有限公司 | Automatic lifting rotary plastic irrigation spraying device and use method thereof |
| CN115039669A (en) * | 2022-07-27 | 2022-09-13 | 黄骅市国润生态食品有限公司 | Gardens greenery patches irrigation equipment |
-
2021
- 2021-03-08 CN CN202120485335.2U patent/CN214676930U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431114A (en) * | 2022-01-14 | 2022-05-06 | 江西旺来科技有限公司 | Automatic lifting rotary plastic irrigation spraying device and use method thereof |
| CN114431114B (en) * | 2022-01-14 | 2023-03-14 | 江西旺来科技有限公司 | Automatic lifting rotary plastic irrigation spraying device and use method thereof |
| CN115039669A (en) * | 2022-07-27 | 2022-09-13 | 黄骅市国润生态食品有限公司 | Gardens greenery patches irrigation equipment |
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| 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: 20211112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |