CN212629373U - Agricultural is with big-arch shelter spraying agricultural equipment - Google Patents
Agricultural is with big-arch shelter spraying agricultural equipment Download PDFInfo
- Publication number
- CN212629373U CN212629373U CN202021340875.3U CN202021340875U CN212629373U CN 212629373 U CN212629373 U CN 212629373U CN 202021340875 U CN202021340875 U CN 202021340875U CN 212629373 U CN212629373 U CN 212629373U
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- CN
- China
- Prior art keywords
- fixedly connected
- bevel gear
- agitator tank
- agricultural
- motor
- 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.)
- Expired - Fee Related
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 28
- 239000002893 slag Substances 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000003651 drinking water Substances 0.000 claims 2
- 235000020188 drinking water Nutrition 0.000 claims 2
- 239000007921 spray Substances 0.000 abstract description 22
- 239000003337 fertilizer Substances 0.000 description 16
- 239000000126 substance Substances 0.000 description 15
- 238000009395 breeding Methods 0.000 description 5
- 230000001488 breeding effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 3
- 230000002262 irrigation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 244000144730 Amygdalus persica Species 0.000 description 1
- 241000255789 Bombyx mori Species 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 244000241235 Citrullus lanatus Species 0.000 description 1
- 235000012828 Citrullus lanatus var citroides Nutrition 0.000 description 1
- 241000675108 Citrus tangerina Species 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 241000219094 Vitaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000021021 grapes Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Fertilizing (AREA)
- Catching Or Destruction (AREA)
Abstract
The utility model belongs to the technical field of the green house, especially, be an agricultural is with big-arch shelter sprays agricultural equipment, comprising a base plate, the top fixedly connected with agitator tank of bottom plate, the top fixedly connected with regulating box of bottom plate, the first motor of inside fixedly connected with of regulating box, the output shaft fixedly connected with main bevel gear dish of first motor, the surface toothing of main bevel gear dish has inferior bevel gear dish, the fixedly connected with threaded rod of axle center department of inferior bevel gear dish. The utility model discloses a first motor drives main bevel gear dish and secondary bevel gear dish and rotates, makes the threaded rod can rotate, and the cooperation stopper slides on the gag lever post to make the screw thread piece and adjust the pole rebound, the cooperation slide bar can slide in the spout, thereby makes the shower nozzle reciprocate, and then can adjust the shower nozzle angle, makes spray range wider, does not need manual regulation, has reduced artifical intensity, has strengthened spraying efficiency.
Description
Technical Field
The utility model relates to an agricultural greenhouse technical field specifically is an agricultural is with big-arch shelter sprays agricultural equipment.
Background
Currently, greenhouses are used for potted flower and cut flower cultivation, fruit tree production is used for cultivating grapes, strawberries, watermelons, melons, peaches, oranges and tangerines, forestry production is used for forest seedling cultivation, ornamental tree cultivation and the like, breeding industry is used for silkworm breeding, chicken breeding, cattle breeding, pig breeding, fish, fry and the like, the greenhouses can be divided into vegetable greenhouses, plastic greenhouses, light-transmitting plastic greenhouses, greenhouse greenhouses, sunlight plate greenhouses, intelligent greenhouses, single-span greenhouses, multi-span greenhouses, single-roof greenhouses, double-roof greenhouses, heating greenhouses, non-heating greenhouses and the like, in the greenhouse planting process, water generally needs to be sprayed on crops in the greenhouses to guarantee normal growth of the crops, and water also needs to be sprayed under the conditions of drought and the like.
The current spraying equipment has the following problems:
1. in the prior art, the spraying angle of the spray head is fixed, when people need to spray water on a distant field, the distance of the spray head for spraying water can be adjusted only by manually moving the water spraying irrigation device, and the process is complicated, so that the time and physical strength of people can be wasted, the working efficiency is greatly reduced, and great inconvenience is brought to people during agricultural irrigation;
2. when spraying crops, need add some chemical fertilizers in the water tank sometimes and guarantee that crops are healthy to grow up, among the prior art, generally all through manual stirring, lead to stirring inhomogeneous, when spraying, cause the water pipe to block up easily.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a big-arch shelter for agricultural sprays agricultural equipment has solved prior art, and inconvenient regulation shower nozzle angle and chemical fertilizer stirring are inhomogeneous, cause the problem of water pipe jam.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: an agricultural greenhouse spraying agricultural device comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a stirring box, the top of the bottom plate is fixedly connected with an adjusting box, the inside of the adjusting box is fixedly connected with a first motor, an output shaft of the first motor is fixedly connected with a main bevel gear disc, the outer surface of the main bevel gear disc is meshed with a secondary bevel gear disc, a threaded rod is fixedly connected with the axis of the secondary bevel gear disc, the threaded rod is rotatably connected with the adjusting box through a bearing, the outer surface of the threaded rod is in threaded connection with a threaded block, the inside of the adjusting box is fixedly connected with a limiting rod, the outer surface of the limiting rod is in sliding connection with a limiting block, the limiting block is fixedly connected with the threaded block through a connecting rod, the outer surface of the connecting rod is fixedly connected with an adjusting rod, the top end of the adjusting rod is fixedly, the top end of the moving rod is fixedly connected with a fixed block, one side of the fixed block is fixedly connected with a slide rod, the top of the adjusting box is fixedly connected with a straight plate, one side of the straight plate is rotatably connected with an adjusting plate through a rotating shaft, a sliding groove is formed in the adjusting plate and is in sliding connection with the slide rod, the top of the stirring box is fixedly connected with a water suction pump, an output shaft of the water suction pump is fixedly connected with a hose, one end of the hose is fixedly connected with a water outlet pipe, the water outlet pipe is fixedly connected with the adjusting plate, one end of the water outlet pipe is fixedly connected with a spray head, an input end of the water suction pump is fixedly connected with a water suction pipe, the water suction pipe penetrates through the stirring box and extends to the inside, the top of the stirring box is fixedly connected with a water, the output shaft fixedly connected with stirring vane of second motor, the inside fixedly connected with filter screen of agitator tank.
As an optimal technical scheme of the utility model, the bottom fixedly connected with universal wheel of bottom plate, the quantity of universal wheel is four.
As an optimal technical scheme of the utility model, the top fixedly connected with swash plate of agitator tank, one side fixedly connected with handle of swash plate.
As an optimal technical scheme of the utility model, the one end fixedly connected with of slide bar slips the head, the diameter of slipping the head is greater than the width of spout.
As an optimal technical scheme of the utility model, the slag notch has been seted up to one side of agitator tank, one side fixedly connected with arm-tie of agitator tank, the size of arm-tie and the big or small looks adaptation of slag notch.
As an optimized technical scheme of the utility model, one side fixedly connected with pull ring of arm-tie.
(III) advantageous effects
Compared with the prior art, the utility model provides a big-arch shelter sprays agricultural equipment for agricultural possesses following beneficial effect:
1. this agricultural is with big-arch shelter sprays agricultural equipment, it rotates with time bevel gear dish to drive main bevel gear dish through first motor, make the threaded rod rotate, the cooperation stopper slides on the gag lever post, thereby make the screw thread piece and adjust the pole rebound, the cooperation slide bar can slide in the spout, thereby make the shower nozzle can reciprocate, and then can adjust the shower nozzle angle, it is wider to make the spray regime, do not need manual regulation, the artificial strength has been reduced, the efficiency of spraying has been strengthened, the cooperation universal wheel can remove the device, the convenience has been increased.
2. This agricultural is with big-arch shelter sprays agricultural equipment filters the material sediment through the filter screen, makes the filter residue can not block up the pipeline, makes and sprays the effect better, and the cooperation second motor drives stirring vane rotation, makes the stirring more even for chemical fertilizer dissolves speed simultaneously, further prevents that the filter residue from blockking up the pipeline, utilizes the pulling arm-tie, is convenient for clear up the impurity of mixing in the chemical fertilizer, reinforcing practicality.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the stirring box and the adjusting box of the present invention;
FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;
fig. 4 is a side view of the structure of the present invention.
In the figure: 1. a base plate; 2. a stirring box; 3. an adjusting box; 4. a first motor; 5. a main bevel gear disc; 6. a secondary bevel gear disc; 7. a threaded rod; 8. a thread block; 9. a limiting rod; 10. a limiting block; 11. adjusting a rod; 12. a transverse plate; 13. a travel bar; 14. a fixed block; 15. a slide bar; 16. sliding the head; 17. a straight plate; 18. an adjusting plate; 19. a chute; 20. a water pump; 21. a hose; 22. a water outlet pipe; 23. a spray head; 24. a water pumping pipe; 25. a water inlet; 26. a feed inlet; 27. a second motor; 28. a stirring blade; 29. filtering with a screen; 30. a universal wheel; 31. a sloping plate; 32. a handle; 33. pulling a plate; 34. a pull ring; 35. a connecting rod.
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.
Examples
Referring to fig. 1-4, the present invention provides the following technical solutions: an agricultural greenhouse spraying agricultural device comprises a bottom plate 1, a stirring box 2 is fixedly connected to the top of the bottom plate 1, an adjusting box 3 is fixedly connected to the top of the bottom plate 1, a first motor 4 is fixedly connected to the inside of the adjusting box 3, a main bevel gear disc 5 is fixedly connected to an output shaft of the first motor 4, a secondary bevel gear disc 6 is meshed with the outer surface of the main bevel gear disc 5, a threaded rod 7 is fixedly connected to the axis of the secondary bevel gear disc 6, the threaded rod 7 is rotatably connected with the adjusting box 3 through a bearing, a threaded block 8 is connected to the outer surface of the threaded rod 7 in a threaded manner, a limiting rod 9 is fixedly connected to the inside of the adjusting box 3, a limiting block 10 is slidably connected to the outer surface of the limiting rod 9, the limiting block 10 is fixedly connected with the threaded block 8 through a connecting rod 35, an adjusting rod 11 is fixedly connected to the outer surface of the connecting, the top end of the moving rod 13 is fixedly connected with a fixed block 14, one side of the fixed block 14 is fixedly connected with a slide rod 15, the top of the adjusting box 3 is fixedly connected with a straight plate 17, one side of the straight plate 17 is rotatably connected with an adjusting plate 18 through a rotating shaft, a sliding groove 19 is formed in the adjusting plate 18, the sliding groove 19 is in sliding connection with the slide rod 15, the top of the stirring box 2 is fixedly connected with a water suction pump 20, an output shaft of the water suction pump 20 is fixedly connected with a hose 21, one end of the hose 21 is fixedly connected with a water outlet pipe 22, the water outlet pipe 22 is fixedly connected with the adjusting plate 18, one end of the water outlet pipe 22 is fixedly connected with a spray head 23, the input end of the water suction pump 20 is fixedly connected with a water suction pipe 24, the water suction pipe 24 penetrates through the stirring box 2 and extends to the inside, an output shaft of the second motor 27 is fixedly connected with a stirring blade 28, and the inside of the stirring box 2 is fixedly connected with a filter screen 29.
In this embodiment, the first motor 4 drives the main bevel gear disc 5 to rotate, the main bevel gear disc 5 drives the secondary bevel gear disc 6 to rotate, the secondary bevel gear disc 6 drives the threaded rod 7 to rotate, the limiting block 10 slides on the limiting rod 9, so as to drive the threaded block 8 and the adjusting rod 11 to move upwards, the transverse plate 12 and the moving rod 13 also move along with the threaded rod, the straight plate 17 and the adjusting plate 18 are rotatably connected, and the sliding rod 15 and the sliding groove 19 are slidably connected, so as to drive the spray head 23 to move upwards, so that the remote crops can be sprayed, the spraying range is enlarged, manual adjustment is not needed, the manual strength is reduced, the spraying efficiency is increased, the hose 21 does not influence the up-and-down movement of the water outlet pipe 22, the material slag is filtered through the filter screen 29, so that the filter slag does not block the pipeline, the spraying effect is better, the second motor 27 drives the stirring, thereby stir chemical fertilizer and water for chemical fertilizer dissolving efficiency makes the stirring more even, further prevents that the filter residue from blockking up the pipeline, through suction pump 20, takes chemical fertilizer water out through suction pipe 24, from 23 blowout of shower nozzle, sprays crops.
Specifically, the bottom of the bottom plate 1 is fixedly connected with universal wheels 30, and the number of the universal wheels 30 is four.
In this embodiment, the device is easily moved by the universal wheels 30, which increases convenience.
Specifically, the top of the stirring tank 2 is fixedly connected with a sloping plate 31, and one side of the sloping plate 31 is fixedly connected with a handle 32.
In this embodiment, the swash plate 31 and the handle 32 facilitate pushing the device, thereby enhancing the practicability.
Specifically, one end of the sliding rod 15 is fixedly connected with a sliding head 16, and the diameter of the sliding head 16 is larger than the width of the sliding groove 19.
In this embodiment, the slide bar 15 is prevented from falling off when the slide bar 15 slides in the slide groove 19 by the slide head 16.
Specifically, the slag outlet has been seted up to one side of agitator tank 2, one side fixedly connected with arm-tie 33 of agitator tank 2, the size of arm-tie 33 and the size looks adaptation of slag outlet.
In this embodiment, through slag notch and arm-tie 33, conveniently handle the impurity of mixing in the chemical fertilizer, the reinforcing sprays the effect.
Specifically, a pull ring 34 is fixedly connected to one side of the pull plate 33.
In this embodiment, the pulling plate 33 is conveniently pulled by the pulling ring 34, which increases convenience.
The utility model discloses a theory of operation and use flow: the handle 32 is pushed to be matched with the universal wheel 30 to move the device beside crops, water is filled into the stirring box 2 through the water inlet 25, when chemical fertilizer needs to be added, the chemical fertilizer is added into the stirring box 2 from the feed inlet 26, the chemical fertilizer and the water are prevented from being stuck together through the feed inlet 26 to cause waste of the fertilizer, the second motor 27 is opened, the second motor 27 drives the stirring blade 28 to rotate, so that the chemical fertilizer and the water are stirred, the chemical fertilizer dissolving efficiency is accelerated, the phenomenon that the filter residue blocks a pipeline due to uneven stirring is prevented, the filter residue is filtered through the filter screen 29, the water pipe is further prevented from being blocked, meanwhile, impurities mixed in the chemical fertilizer are filtered, the irrigation effect is better, the pull ring 34 is pulled, the pull plate 33 is pulled out from a slag hole, the impurities are discharged from the slag hole to facilitate cleaning, the practicability is enhanced, the water suction pump 20 is opened, the filtered chemical fertilizer water is pumped out, spout from shower nozzle 23, spray crops, when needing to spray crops far away, open first motor 4, first motor 4 drives main bevel gear dish 5 rotatory, main bevel gear dish 5 drives secondary bevel gear dish 6 rotatory, secondary bevel gear dish 6 drives threaded rod 7 rotatory, slide on gag lever post 9 through stopper 10, thereby drive threaded block 8 and adjust pole 11 and move upwards, make diaphragm 12 and carriage release lever 13 also remove thereupon, rotate through straight board 17 and regulating plate 18 and connect and slide bar 15 and spout 19 sliding connection, thereby drive shower nozzle 23 rebound, make it spray crops far away, increased the scope of spraying, do not need artifical the regulation, the manual strength has been reduced, spray efficiency has been increased.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an agricultural is with big-arch shelter spraying agricultural equipment, includes bottom plate (1), its characterized in that: the stirring box (2) is fixedly connected to the top of the bottom plate (1), the adjusting box (3) is fixedly connected to the top of the bottom plate (1), the first motor (4) is fixedly connected to the inside of the adjusting box (3), the main bevel gear disc (5) is fixedly connected to an output shaft of the first motor (4), the secondary bevel gear disc (6) is meshed to the outer surface of the main bevel gear disc (5), the threaded rod (7) is fixedly connected to the axis of the secondary bevel gear disc (6), the threaded rod (7) is rotatably connected to the adjusting box (3) through a bearing, the threaded block (8) is in threaded connection with the outer surface of the threaded rod (7), the limiting rod (9) is fixedly connected to the inside of the adjusting box (3), the limiting block (10) is in sliding connection with the outer surface of the limiting rod (9), and the limiting block (10) is fixedly connected to the threaded block (8) through a connecting rod, the outer fixed surface of connecting rod (35) is connected with regulation pole (11), the top fixedly connected with diaphragm (12) of regulation pole (11), the top fixedly connected with carriage release lever (13) of diaphragm (12), the top fixedly connected with fixed block (14) of carriage release lever (13), one side fixedly connected with slide bar (15) of fixed block (14), the top fixedly connected with straight board (17) of regulating box (3), one side of straight board (17) is rotated through the pivot and is connected with regulating plate (18), spout (19) have been seted up to the inside of regulating plate (18), spout (19) and slide bar (15) sliding connection, the top fixedly connected with suction pump (20) of agitator tank (2), the output shaft fixedly connected with hose (21) of suction pump (20), the one end fixedly connected with outlet pipe (22) of hose (21), outlet pipe (22) and regulating plate (18) fixed connection, the one end fixedly connected with shower nozzle (23) of outlet pipe (22), input fixedly connected with drinking-water pipe (24) of suction pump (20), drinking-water pipe (24) run through agitator tank (2) and extend to inside, the top fixedly connected with water inlet (25) of agitator tank (2), the top fixedly connected with feed inlet (26) of agitator tank (2), the top fixedly connected with second motor (27) of agitator tank (2), the output shaft fixedly connected with stirring vane (28) of second motor (27), the inside fixedly connected with filter screen (29) of agitator tank (2).
2. The agricultural greenhouse spraying agricultural equipment as claimed in claim 1, wherein: the bottom of bottom plate (1) fixedly connected with universal wheel (30), the quantity of universal wheel (30) is four.
3. The agricultural greenhouse spraying agricultural equipment as claimed in claim 1, wherein: the top fixedly connected with swash plate (31) of agitator tank (2), one side fixedly connected with handle (32) of swash plate (31).
4. The agricultural greenhouse spraying agricultural equipment as claimed in claim 1, wherein: one end of the sliding rod (15) is fixedly connected with a sliding head (16), and the diameter of the sliding head (16) is larger than the width of the sliding groove (19).
5. The agricultural greenhouse spraying agricultural equipment as claimed in claim 1, wherein: the slag notch has been seted up to one side of agitator tank (2), one side fixedly connected with arm-tie (33) of agitator tank (2), the size of arm-tie (33) and the size looks adaptation of slag notch.
6. The agricultural greenhouse spraying agricultural equipment as claimed in claim 5, wherein: one side of the pulling plate (33) is fixedly connected with a pulling ring (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021340875.3U CN212629373U (en) | 2020-07-09 | 2020-07-09 | Agricultural is with big-arch shelter spraying agricultural equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021340875.3U CN212629373U (en) | 2020-07-09 | 2020-07-09 | Agricultural is with big-arch shelter spraying agricultural equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212629373U true CN212629373U (en) | 2021-03-02 |
Family
ID=74788205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021340875.3U Expired - Fee Related CN212629373U (en) | 2020-07-09 | 2020-07-09 | Agricultural is with big-arch shelter spraying agricultural equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212629373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113439587A (en) * | 2021-08-18 | 2021-09-28 | 宁波仟想科技有限公司 | Intelligent cultivation device for agricultural product planting based on Internet of things |
-
2020
- 2020-07-09 CN CN202021340875.3U patent/CN212629373U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113439587A (en) * | 2021-08-18 | 2021-09-28 | 宁波仟想科技有限公司 | Intelligent cultivation device for agricultural product planting based on Internet of things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |