CN216087608U - Quantitative fertilization control device for soil fertilizer - Google Patents
Quantitative fertilization control device for soil fertilizer Download PDFInfo
- Publication number
- CN216087608U CN216087608U CN202122355122.0U CN202122355122U CN216087608U CN 216087608 U CN216087608 U CN 216087608U CN 202122355122 U CN202122355122 U CN 202122355122U CN 216087608 U CN216087608 U CN 216087608U
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- fertilizer
- frame structure
- quantitative
- storage box
- sealing shell
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- Expired - Fee Related
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- 230000004720 fertilization Effects 0.000 title claims abstract description 21
- 239000002881 soil fertilizer Substances 0.000 title claims abstract description 15
- 239000003337 fertilizer Substances 0.000 claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 9
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Fertilizing (AREA)
Abstract
The utility model provides a quantitative fertilization control device for soil fertilizer, which comprises a bottom metal frame, a left side supporting plate, a right side supporting plate, a fertilizer storage box, a quantitative material distributing frame structure, a rotary rolling frame structure, a transmission V belt, supporting wheels, anti-skidding metal strips, bending hanging rods, a feeding hole, a discharging hole and a sealing baffle plate, wherein the left side supporting plate is respectively welded at the front end and the rear end of the left side of the upper part of the bottom metal frame; the right side supporting plate is respectively welded at the front end and the rear end of the right side of the upper part of the bottom metal frame. The utility model has the beneficial effects that: through the sealed shell of cylinder, branch charging tray and the setting of dividing the material baffle, be favorable to through the gap between the branch material baffle of adjacent two, evenly cut apart the inboard fertilizer of the sealed shell of cylinder to carry out the close control to the load of fertilizer, divide the inboard rotation of material baffle at the sealed shell of cylinder simultaneously, promote the inboard fertilizer removal of the sealed shell of cylinder.
Description
Technical Field
The utility model belongs to the technical field of quantitative fertilization, and particularly relates to a quantitative fertilization control device for a soil fertilizer.
Background
Fertilization refers to an agricultural technical measure of applying a fertilizer into soil or spraying the fertilizer on plants, providing nutrients required by the plants and maintaining and improving the soil fertility. The main purposes of fertilization are to increase crop yield, improve crop quality, fertilize soil and improve economic benefits, so that reasonable and scientific fertilization is one of the main means for guaranteeing grain safety and maintaining sustainable development of agriculture, the fertilizer application amount of each crop growth environment is different, and different crops need to be fertilized in different metering and the fertilizer application amount is strictly controlled according to different planted crops.
However, the existing control device for quantitative fertilization of soil fertilizer has the problems that the same discharge amount of each fertilizer cannot be ensured, the fertilizing amount cannot be adjusted, and a long-distance working room needs to be provided with a motor and a heavy power supply.
Therefore, the utility model of the quantitative fertilization control device for the soil fertilizer is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a quantitative fertilization control device for a soil fertilizer, which is realized by the following technical scheme:
a quantitative fertilization control device for soil fertilizer comprises a bottom metal frame, a left side supporting plate, a right side supporting plate, a fertilizer storage box, a quantitative material distributing frame structure, a rotary rolling frame structure, a transmission V-shaped belt, supporting wheels, anti-skidding metal strips, bending hanging rods, a feeding hole, a discharging hole and a sealing baffle plate, wherein the left side supporting plate is welded at the front end and the rear end of the left side of the upper part of the bottom metal frame respectively; the right side supporting plate is respectively welded at the front end and the rear end of the right side of the upper part of the bottom metal frame; the fertilizer storage box is arranged at the upper part of the bottom metal frame; the quantitative material distributing frame structure is arranged at the lower part of the fertilizer storage box; the rotary rolling frame structure is arranged at the front end of the quantitative material distributing frame structure; the left side and the right side of the transmission V belt are respectively connected with the quantitative material distributing frame structure and the rotary rolling frame structure; the supporting wheels are respectively connected to the periphery of the outer side of the bottom metal frame in a shaft mode; the anti-skid metal strip is welded on the outer side of the support wheel; the bent hanging rod is connected to the left side of the fertilizer storage box through a bolt; the feed inlet is formed in the left upper part of the inner side of the fertilizer storage box; the discharge hole is arranged at the lower part of the inner side of the fertilizer storage box; the sealing baffle is in threaded connection with the inner side of the discharge hole.
Preferably, the upper part of the left supporting plate is connected with the lower left bolt of the fertilizer storage box through a bolt.
Preferably, the upper part of the right supporting plate is connected with the lower right bolt of the fertilizer storage box.
Preferably, the left side of the lower part of the fertilizer storage box is obliquely arranged towards the left upper part, and the right side of the lower part of the fertilizer storage box is obliquely arranged towards the right upper part.
Preferably, the antiskid metal strip is arranged on one side of the support wheel far away from the bottom metal frame.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the arrangement of the cylindrical sealing shell, the material distribution disc and the material distribution partition plates is beneficial to uniformly dividing the fertilizer inside the cylindrical sealing shell through a gap between two adjacent material distribution partition plates, so that the discharge amount of the fertilizer is strictly controlled, and meanwhile, the material distribution partition plates rotate on the inner side of the cylindrical sealing shell to push the fertilizer inside the cylindrical sealing shell to move.
2. According to the utility model, the arrangement of the V-shaped guide pipe and the hollow guide pipe is beneficial to separating the fertilizer to the front end and the rear end respectively through the V-shaped guide pipe, so that the fertilizer is ensured to uniformly scatter at the root of crops, the fertilizer is prevented from scattering to the outer side of a farmland and causing waste to the fertilizer, and the use function of the device is increased.
3. According to the fertilizer storage box, the arrangement of the discharging hopper and the fertilizer storage box is beneficial to enabling the fertilizer inside the fertilizer storage box to slide into the cylindrical sealing shell through the inclined arrangement of the inner side of the fertilizer storage box and the guiding of the discharging hopper, and no power is needed, so that the energy needed by the fertilizer storage box is reduced.
4. In the utility model, the arrangement of the T-shaped sliding groove and the T-shaped sliding block is beneficial to the mutual matching of the T-shaped sliding groove and the T-shaped sliding block, so that the working personnel can conveniently adjust the number of the material distribution partition plates according to the discharge amount of the fertilizer, and further conveniently control the fertilizing amount of the fertilizer.
5. According to the utility model, the arrangement of the metal rocker and the friction wheel is beneficial to enabling the support wheel to drive the driving belt wheel to rotate through the friction force between the friction wheel and the support wheel, so that the device is ensured to drive the fertilizer to automatically fertilize when moving in a farmland, and meanwhile, the metal rocker can enable the friction wheel to be separated from the support wheel, so that the normal movement of the device when the device is idle is not influenced.
6. In the utility model, the arrangement of the transmission V belt, the driven belt wheel and the driving belt wheel is beneficial to the belt transmission formed by the transmission V belt, the driven belt wheel and the driving belt wheel respectively, so that the support wheels drive the material distribution disc to rotate, other electrical components are not required to be additionally installed, the energy consumption of the device in use is saved, and elements such as a mobile power supply, a motor and the like are not required to be installed.
7. According to the utility model, the arrangement of the movable ejector rod, the hollow swing pipe and the locking bolt is beneficial to adjusting the position of the movable ejector rod on the inner side of the hollow swing pipe through the locking bolt, so that the right position of the metal rocker is adjusted, and the attachment or separation between the friction wheel and the support wheel is ensured.
8. According to the fertilizer storage box, the discharge hole and the sealing baffle are arranged, so that after the sealing baffle is opened, workers can clean residual fertilizer inside the fertilizer storage box conveniently, and the phenomenon that the residual fertilizer is caked after being stored inside the fertilizer storage box for a long time is prevented from affecting subsequent use of the device.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the quantitative material distributing frame structure of the present invention.
Fig. 3 is a schematic structural view of a fertilizer spacer structure of the present invention.
Fig. 4 is a schematic structural view of the structure of the rotating rolling stand of the present invention.
In the figure:
1. a bottom metal frame; 2. a left support plate; 3. a right support plate; 4. a fertilizer storage bin; 5. a quantitative material distributing frame structure; 51. a cylindrical sealing shell; 52. a fertilizer spacer structure; 521. distributing disks; 522. a T-shaped chute; 523. a T-shaped slider; 524. a material distributing clapboard; 525. a driven pulley; 53. a discharging hopper; 54. a V-shaped guide tube; 55. a hollow guide tube; 6. rotating the rolling frame structure; 61. a metal rocker; 62. a driving pulley; 63. a friction wheel; 64. moving the ejector rod; 65. a hollow swing pipe; 66. locking the bolt; 7. a V-belt drive; 8. supporting a wheel; 9. an anti-slip metal strip; 10. bending the hanging rod; 11. a feed inlet; 12. a discharge port; 13. and sealing the baffle.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
example (b):
as shown in attached figures 1 and 2, the quantitative fertilization control device for the soil fertilizer comprises a bottom metal frame 1, a left side support plate 2, a right side support plate 3, a fertilizer storage box 4, a quantitative material distributing frame structure 5, a rotary rolling frame structure 6, a transmission V belt 7, a support wheel 8, an anti-skid metal strip 9, a bending hanging rod 10, a feeding hole 11, a discharging hole 12 and a sealing baffle 13, wherein the left side support plate 2 is respectively welded at the front end and the rear end of the left side of the upper part of the bottom metal frame 1; the right side supporting plate 3 is respectively welded at the front end and the rear end of the right side of the upper part of the bottom metal frame 1; the fertilizer storage box 4 is arranged at the upper part of the bottom metal frame 1; the quantitative material distributing frame structure 5 is arranged at the lower part of the fertilizer storage box 4; the rotary rolling frame structure 6 is arranged at the front end of the quantitative material distributing frame structure 5; the left side and the right side of the transmission V belt 7 are respectively connected with the quantitative material distributing frame structure 5 and the rotary rolling frame structure 6; the supporting wheels 8 are respectively coupled at the periphery of the outer side of the bottom metal frame 1; the antiskid metal strip 9 is welded on the outer side of the support wheel 8; the bent hanging rod 10 is connected to the left side of the fertilizer storage box 4 through a bolt; the feed inlet 11 is arranged at the left upper part of the inner side of the fertilizer storage box 4; the discharge hole 12 is arranged at the lower part of the inner side of the fertilizer storage box 4; the sealing baffle 13 is in threaded connection with the inner side of the discharge hole 12; the quantitative material distributing frame structure 5 comprises a cylindrical sealing shell 51, a fertilizer spacing frame structure 52, a discharging funnel 53, a V-shaped guide pipe 54 and a hollow guide pipe 55, wherein the fertilizer spacing frame structure 52 is arranged on the inner side of the cylindrical sealing shell 51; the blanking funnel 53 is welded at the left side of the upper part of the cylindrical sealing shell 51; the V-shaped guide pipe 54 is connected to the right side of the lower part of the cylindrical sealing shell 51 through a bolt; the hollow guide pipes 55 are respectively welded at the lower part of the inner side of the V-shaped guide pipe 54; the fertilizer is placed in the fertilizer storage box 4 through the feed port 11, and then enters the inner side of the cylindrical sealing shell 51 through the inclined surface at the lower part of the inner side of the fertilizer storage box 4 in cooperation with the guiding of the discharging funnel 53.
As shown in fig. 3, in the above embodiment, specifically, the fertilizer spacer structure 52 includes a distributing tray 521, a T-shaped chute 522, a T-shaped slider 523, a distributing partition 524, and a driven pulley 525, where the T-shaped chute 522 is provided at a position around the inner side of the distributing tray 521; the T-shaped sliding block 523 is inserted into the inner side of the T-shaped sliding groove 522; the material distributing partition plates 524 are respectively arranged on the outer sides of the material distributing discs 521; the driven belt wheel 525 is in key connection with a central shaft at the front end of the distributing disc 521; the fertilizer fills the gap between two adjacent distributing partition plates 524, and the distributing disc 521 moves the fertilizer to the inner side of the V-shaped guide pipe 54 through the distributing partition plates 524.
As shown in fig. 4, in the above embodiment, specifically, the rotating rolling frame structure 6 includes a metal rocker 61, a driving pulley 62, a friction wheel 63, a moving ram 64, a hollow rocker tube 65 and a locking bolt 66, and the driving pulley 62 is coupled to the upper right portion of the rear end of the metal rocker 61; the friction wheel 63 is connected to the rear end of the driving pulley 62 through a bolt; the lower part of the movable mandril 64 is connected with the middle position of the front end of the metal rocker 61 in a shaft mode; the hollow swing pipe 65 is sleeved on the upper part of the outer side of the movable mandril 64; the locking bolt 66 is in threaded connection with the joint of the movable mandril 64 and the hollow rocker tube 65; and loosening the locking bolt 66, pushing the movable ejector rod 64 downwards, and adjusting the position of the movable ejector rod 64 on the inner side of the hollow swing pipe 65 to enable the outer side of the friction wheel 63 to be tightly attached to the outer side of the support wheel 8.
In the above embodiment, specifically, the upper portion of the left support plate 2 is bolted to the lower left side of the fertilizer storage box 4, and the upper portion of the right support plate 3 is bolted to the lower right side of the fertilizer storage box 4, so as to support the inclined surface of the lower portion of the fertilizer storage box 4.
In the above embodiment, specifically, the left side of the lower part of the fertilizer storage box 4 is obliquely arranged towards the upper left part, and the right side of the lower part of the fertilizer storage box 4 is obliquely arranged towards the upper right part, so that fertilizer can fall down automatically.
In the above embodiment, specifically, the anti-slip metal strip 9 is disposed on one side of the support wheel 8 away from the bottom metal frame 1, and plays a role of anti-slip.
In the above embodiment, specifically, the cylindrical sealing shell 51 is bolted to the right side inside the bottom metal frame 1, and the rear end of the cylindrical sealing shell 51 is bolted to a sealing end cover, so that the inside of the cylindrical sealing shell 51 can be cleaned conveniently.
In the above embodiment, specifically, the upper part of the discharging funnel 53 is bolted to the middle position of the lower part of the fertilizer storage box 4, and the inner upper part is communicated with the inner lower part of the fertilizer storage box 4.
In the above embodiment, specifically, the front and rear ends of the V-shaped guide pipe 54 are respectively inclined downward, and the middle position of the upper part of the V-shaped guide pipe 54 is communicated with the lower part of the inner side of the cylindrical sealing shell 51, so as to uniformly scatter the fertilizer at the front and rear ends of the device.
In the above embodiment, specifically, the distributing tray 521 is coupled to the middle position of the inner side of the cylindrical sealing shell 51, and one side of the distributing partition 524, which is far away from the distributing tray 521, is closely attached to the inner side of the cylindrical sealing shell 51, so as to uniformly divide the fertilizer.
In the above embodiment, specifically, the material separating partition 524 is integrated with the T-shaped slider 523 at a position close to one side of the material separating tray 521, and the driven pulley 525 is disposed at the front end of the cylindrical sealing shell 51, so as to quantitatively control the discharge amount of the fertilizer.
In the above embodiment, specifically, the metal rocker 61 is arranged at the front end of the cylindrical sealing shell 51, and the left lower part of the rear end of the metal rocker 61 is coupled with the front end central shaft of the distributing tray 521.
In the above embodiment, specifically, the metal rocker 61 is disposed on the left side of the support wheel 8 on the right side of the bottom metal frame 1, and the transmission V-belt 7 is respectively sleeved on the outer sides of the driving pulley 62 and the driven pulley 525.
In the above embodiment, specifically, the middle position of the rear end of the hollow swing pipe 65 is coupled to the lower right part of the front end of the fertilizer storage box 4, and the right side of the friction wheel 63 is closely attached to the left side of the support wheel 8.
Principle of operation
The working principle of the utility model is as follows: when the fertilizer distributor is used, the device is transformed and reformed on a hook of an agricultural tractor by bending the hanging rod 10, then the device is moved to a farmland by matching with the supporting wheel 8, the locking bolt 66 is unscrewed, the movable ejector rod 64 is pushed downwards, the position of the movable ejector rod 64 at the inner side of the hollow shaking pipe 65 is adjusted, the outer side of the friction wheel 63 is tightly attached to the outer side of the supporting wheel 8, then fertilizer is placed at the inner side of the fertilizer storage box 4 through the feed inlet 11, the fertilizer enters the inner side of the cylindrical sealing shell 51 by matching with the guide of the blanking hopper 53 through the inclined plane at the lower part of the inner side of the fertilizer storage box 4, at the moment, the fertilizer fills the gap between two adjacent distributing partition plates 524, the driving belt wheel 62 drives the driven belt wheel 525 to rotate through the transmission V-belt 7, the distributing disc 521 moves the fertilizer to the inner side of the V-shaped guide pipe 54 through the distributing partition plates 524, and finally the fertilizer is uniformly scattered in the farmland soil through the hollow guide pipe 55, through the cooperation of T type spout 522 and T type slider 523, be convenient for control the quantity of branch material baffle 524 to the load of ration control fertilizer.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (8)
1. The quantitative fertilization control device for the soil fertilizer is characterized by comprising a bottom metal frame (1), a left side supporting plate (2), a right side supporting plate (3), a fertilizer storage box (4), a quantitative material distributing frame structure (5), a rotary rolling frame structure (6), a transmission V-shaped belt (7), supporting wheels (8), anti-skidding metal strips (9), bending hanging rods (10), a feeding hole (11), a discharging hole (12) and a sealing baffle plate (13), wherein the left side supporting plate (2) is welded at the front end and the rear end of the left side of the upper portion of the bottom metal frame (1) respectively; the right side supporting plate (3) is respectively welded at the front end and the rear end of the right side of the upper part of the bottom metal frame (1); the fertilizer storage box (4) is arranged at the upper part of the bottom metal frame (1); the quantitative material distributing frame structure (5) is arranged at the lower part of the fertilizer storage box (4); the rotary rolling frame structure (6) is arranged at the front end of the quantitative material distributing frame structure (5); the left side and the right side of the transmission V-shaped belt (7) are respectively connected with the quantitative material distributing frame structure (5) and the rotary rolling frame structure (6); the supporting wheels (8) are respectively connected to the periphery of the outer side of the bottom metal frame (1) in a shaft mode; the anti-skid metal strips (9) are welded on the outer side of the support wheel (8); the bent hanging rod (10) is connected to the left side of the fertilizer storage box (4) through a bolt; the feed inlet (11) is formed in the left upper part of the inner side of the fertilizer storage box (4); the discharge hole (12) is arranged at the lower part of the inner side of the fertilizer storage box (4); the sealing baffle (13) is in threaded connection with the inner side of the discharge hole (12); the quantitative material distributing frame structure (5) comprises a cylindrical sealing shell (51), a fertilizer spacing frame structure (52), a discharging funnel (53), a V-shaped guide pipe (54) and a hollow guide pipe (55), wherein the fertilizer spacing frame structure (52) is arranged on the inner side of the cylindrical sealing shell (51); the blanking funnel (53) is welded on the left side of the upper part of the cylindrical sealing shell (51); the V-shaped guide pipe (54) is connected to the right side of the lower part of the cylindrical sealing shell (51) through a bolt; the hollow guide pipes (55) are respectively welded at the lower part of the inner side of the V-shaped guide pipe (54).
2. The quantitative fertilization control device for soil and fertilizer according to claim 1, wherein the fertilizer spacer structure (52) comprises a material distribution disc (521), a T-shaped chute (522), a T-shaped slider (523), a material distribution partition plate (524) and a driven pulley (525), the T-shaped chute (522) is arranged at the position of the inner periphery of the material distribution disc (521) in a split manner; the T-shaped sliding block (523) is inserted into the inner side of the T-shaped sliding groove (522); the material distribution partition plates (524) are respectively arranged on the outer sides of the material distribution discs (521); the driven belt wheel (525) is in key connection with a central shaft at the front end of the distributing disc (521).
3. The device for controlling the quantitative fertilization of the soil fertilizer as claimed in claim 1, wherein the rotary rolling frame structure (6) comprises a metal rocker (61), a driving pulley (62), a friction wheel (63), a movable mandril (64), a hollow rocking tube (65) and a locking bolt (66), wherein the driving pulley (62) is coupled to the right upper part of the rear end of the metal rocker (61); the friction wheel (63) is connected to the rear end of the driving pulley (62) through a bolt; the lower part of the movable mandril (64) is connected with the middle position of the front end of the metal rocker (61) in a shaft way; the hollow swing pipe (65) is sleeved on the upper part of the outer side of the movable ejector rod (64); the locking bolt (66) is in threaded connection with the connecting position of the movable ejector rod (64) and the hollow swing pipe (65).
4. The device for controlling the quantitative fertilization of a soil fertilizer as claimed in claim 1, wherein the cylindrical sealing shell (51) is bolted to the right side of the inside of the bottom metal frame (1), and a sealing end cover is bolted to the rear end of the cylindrical sealing shell (51).
5. The control apparatus for quantitative fertilization of a soil fertilizer according to claim 1, wherein the upper portion of the hopper (53) is bolted to a lower middle portion of the fertilizer storage tank (4), and the inner upper portion is communicated with the inner lower portion of the fertilizer storage tank (4).
6. The control device for quantitative fertilization of soil and fertilizer according to claim 1, wherein the V-shaped guide tube (54) is provided at its front and rear ends, respectively, in a downwardly inclined manner, and an upper middle portion of the V-shaped guide tube (54) is communicated with an inner lower portion of the cylindrical sealing shell (51).
7. The device for controlling the quantitative fertilization of the soil fertilizer as claimed in claim 2, wherein the distributing tray (521) is coupled to the middle position of the inner side of the cylindrical sealing shell (51), and one side of the distributing partition plate (524) far away from the distributing tray (521) is tightly attached to the inner side of the cylindrical sealing shell (51).
8. The device for controlling the quantitative fertilization of the soil fertilizer as claimed in claim 2, wherein the positions of the material distribution partition plates (524) close to one side of the material distribution disc (521) are respectively integrated with T-shaped sliders (523), and the driven pulleys (525) are arranged at the front end of the cylindrical sealing shell (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122355122.0U CN216087608U (en) | 2021-09-28 | 2021-09-28 | Quantitative fertilization control device for soil fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122355122.0U CN216087608U (en) | 2021-09-28 | 2021-09-28 | Quantitative fertilization control device for soil fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216087608U true CN216087608U (en) | 2022-03-22 |
Family
ID=80689402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122355122.0U Expired - Fee Related CN216087608U (en) | 2021-09-28 | 2021-09-28 | Quantitative fertilization control device for soil fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216087608U (en) |
-
2021
- 2021-09-28 CN CN202122355122.0U patent/CN216087608U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220322 |