CN216236855U - Efficient biochar preparation device - Google Patents
Efficient biochar preparation device Download PDFInfo
- Publication number
- CN216236855U CN216236855U CN202122851791.7U CN202122851791U CN216236855U CN 216236855 U CN216236855 U CN 216236855U CN 202122851791 U CN202122851791 U CN 202122851791U CN 216236855 U CN216236855 U CN 216236855U
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- Prior art keywords
- pipe
- cooling
- fixedly connected
- motor
- water
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 52
- 238000003763 carbonization Methods 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 14
- 239000003610 charcoal Substances 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000010924 continuous production Methods 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000012265 solid product Substances 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Carbon And Carbon Compounds (AREA)
Abstract
The utility model discloses an efficient biochar preparation device, which belongs to the technical field of biochar preparation devices, wherein biochar contact air with high temperature can damage biochar and needs to be cooled, the traditional cooling mode is natural cooling, and continuous production is difficult to reduce the temperature; the second motor linkage stirring leaf rotates, stirs the biological carbon of high temperature in the carbonization stove, makes the temperature even, carries out oil cooling through the spiral pipe to carry out the water-cooling through annular water tank, reach quick cooling, continuous production effect.
Description
Technical Field
The utility model relates to the technical field of a biochar preparation device, in particular to an efficient biochar preparation device.
Background
The biochar is a highly aromatic indissolvable solid product produced by high-temperature thermal cracking of biomass in an anaerobic or anoxic environment. In the present production technology, carbonization furnace equipment is often used to directly discharge materials after high-temperature thermal cracking granulation, because the prepared biochar is high in temperature, if the biochar is directly discharged, the biochar can be damaged when high-temperature biochar contacts with air, and the biochar needs to be cooled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an efficient biochar preparation device to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an efficient biochar preparation facilities, includes the bottom plate, fixed surface is equipped with the ring carrier on the bottom plate, fixed mounting has the carbide furnace in the ring carrier, install the oil cooling subassembly in the carbide furnace, carbide furnace upper end fixed mounting has a pay-off section of thick bamboo, the fixed conveying pipe that has cup jointed of pay-off section of thick bamboo surface, the fixed upper cover that is equipped with in pay-off section of thick bamboo upper end, the fixed surface installs material feeding unit on the upper cover, the material feeding unit bottom is rotated with the carbide furnace upper end and is connected, fixed surface installs agitating unit on the bottom plate, the last fixedly connected with aggregate unit of agitating unit, agitating unit rotates with the carbide furnace bottom and is connected, the fixed cup joint of outer surface has the water-cooling discharging pipe in the carbide furnace bottom, the joint is rotated with the aggregate unit upper end to the water-cooling discharging pipe.
According to a preferable technical scheme, the feeding port is formed in the upper end surface of the carbonization furnace, the base is fixedly arranged at the bottom end of the carbonization furnace, the base is rotatably connected with the stirring device, the annular groove is formed in the carbonization furnace, and the oil cooling assembly is fixedly arranged in the annular groove.
According to a preferable technical scheme, the feeding device comprises a first motor, the first motor is fixedly arranged on the upper surface of the feeding barrel, the output end of the first motor movably penetrates through the feeding barrel and is fixedly connected with a spiral blade, the bottom end of the spiral blade is fixedly connected with a rotating disc, the bottom end of the rotating disc is rotatably arranged on the upper surface of the carbonization furnace, a fan-shaped groove is formed in the surface of the rotating disc, and the bottom end of the rotating disc is attached to the upper surface of the carbonization furnace.
As a preferred technical scheme of the utility model, the oil cooling component comprises a spiral pipe, the spiral pipe is fixedly arranged in the annular groove, two ends of the spiral pipe are fixedly connected with an oil inlet pipe and an oil outlet pipe, and the oil inlet pipe and the oil outlet pipe are fixedly sleeved on the outer surface of the carbonization furnace.
According to a preferable technical scheme of the utility model, the stirring device comprises a second motor, the second motor is fixedly connected with a U-shaped block, the bottom end of the U-shaped block is fixedly arranged on the upper surface of the bottom plate, the output end of the second motor movably penetrates through the U-shaped block and is fixedly connected with a driving conical gear, the driving conical gear is in meshing connection with a driven conical gear, a rotating shaft is fixedly connected onto the driven conical gear, the upper end of the rotating shaft is rotatably clamped with the base and is fixedly connected with a plurality of stirring blades, and the stirring blades are rotatably arranged in the carbonization furnace.
According to a preferred technical scheme, the upper end of the water-cooling discharging pipe is fixedly arranged on the outer surface of the bottom end of the carbonization furnace, a vertical pipe is fixedly sleeved on the outer surface of the water-cooling discharging pipe, the vertical pipe is rotationally clamped with a linkage device, a material guiding ball is rotationally clamped on the inner wall of the water-cooling discharging pipe, a circular groove is formed in the material guiding ball, an annular water tank is formed in the water-cooling discharging pipe, and a water inlet pipe and a water outlet pipe are fixedly sleeved on the water-cooling discharging pipe outside the annular water tank.
As a preferred technical scheme of the present invention, the linkage device includes a first rocker arm, one end of the first rocker arm is fixedly connected to an output end of a second motor, the other end of the first rocker arm is rotatably connected to a second rocker arm, the other end of the second rocker arm is rotatably connected to a rack, the rack is slidably engaged with a slide rail, a guide slot is formed in the slide rail, the rack is slidably disposed in the guide slot, a bottom end of the slide rail is fixedly disposed on an upper surface of a base plate, the rack is engaged with a gear shaft, a bottom end of the gear shaft is rotatably disposed on the upper surface of the base plate, and an upper end of the gear shaft is fixedly connected to a material guiding ball.
Compared with the prior art, the utility model has the beneficial effects that:
1. the first motor drives the spiral blade and the rotary table to rotate in the feeding barrel and can intermittently feed materials into the carbonization furnace through the fan-shaped groove, and the second motor is linked with the rack to slide back and forth to enable the material guide ball to rotate back and forth, so that intermittent discharging is realized through the water-cooling discharging pipe;
2. the second motor linkage stirring leaf rotates, stirs the biological carbon of high temperature in the carbonization stove, makes the temperature even, carries out oil cooling through the spiral pipe to carry out the water-cooling through annular water tank, reach quick cooling, continuous production effect.
Drawings
FIG. 1 is a schematic structural view of the present invention,
FIG. 2 is a schematic view of a carbonization furnace and a feeding device in the structure of the present invention,
figure 3 is a schematic view of an oil cooling assembly of the present invention,
figure 4 is a schematic view of an agitation apparatus according to the present invention,
FIG. 5 is a schematic view of a structural linkage of the present invention,
FIG. 6 is a schematic cross-sectional view of a water-cooled tapping pipe according to the present invention.
In the figure: 1. a base plate; 11. an annular support; 2. a carbonization furnace; 21. a base; 22. a feed port; 23. an annular groove; 3. a feed cylinder; 31. a feed pipe; 32. an upper cover; 4. a feeding device; 41. a first motor; 42. helical leaves; 43. a turntable; 431. a sector groove; 5. a stirring device; 51. a second motor; 52. a U-shaped block; 53. a driving bevel gear; 54. a driven bevel gear; 55. a rotating shaft; 56. stirring blades; 6. an oil-cooled component; 61. an oil inlet pipe; 62. a spiral tube; 63. an oil outlet pipe; 7. a linkage device; 71. a first rocker arm; 72. a second rocker arm; 73. a slide rail; 731. a guide groove; 74. a rack; 75. a gear shaft; 8. water-cooling the discharge pipe; 81. a riser; 82. a material guiding ball; 821. a circular groove; 83. a water inlet pipe; 84. a water outlet pipe; 85. an annular water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1-6, the present invention provides an efficient biochar preparation apparatus, which comprises a bottom plate 1, wherein an annular support 11 is fixedly arranged on the upper surface of the bottom plate 1, a carbonization furnace 2 is fixedly arranged in the annular support 11, the carbonization furnace 2 is fixedly arranged, an oil cooling assembly 6 is arranged in the carbonization furnace 2, the oil cooling assembly 6 performs oil cooling on high-temperature biochar in the carbonization furnace 2, a feeding cylinder 3 is fixedly arranged at the upper end of the carbonization furnace 2, a feeding pipe 31 is fixedly connected to the outer surface of the feeding cylinder 3, an upper cover 32 is fixedly arranged at the upper end of the feeding cylinder 3, a feeding device 4 is fixedly arranged on the upper surface of the upper cover 32, the feeding device 4 can feed raw materials in the feeding cylinder 3 into the carbonization furnace 2, the bottom end of the feeding device 4 is rotatably connected with the upper end of the carbonization furnace 2, a stirring device 5 is fixedly arranged on the upper surface of the bottom plate 1, the stirring device 5 stirs the biochar in the carbonization furnace 2, realize that the temperature is even, fixedly connected with aggregate unit 7 on the agitating unit 5, agitating unit 5 rotates with 2 bottoms of carbide furnace to be connected, the fixed cover in 2 bottoms of carbide furnace outer surface has connect water-cooling discharging pipe 8, and aggregate unit 7 realizes that the intermittent type nature of water-cooling discharging pipe 8 is closed or is opened, realizes the ejection of compact of intermittent type nature, water-cooling discharging pipe 8 rotates the joint with 7 upper ends of aggregate unit.
Further, the pay-off mouth 22 has been seted up to 2 upper end surfaces of carbide furnace, 2 bottom mounting of carbide furnace are equipped with base 21, base 21 rotates and connects agitating unit 5, and agitating unit 5 can the steady operation, annular groove 23 has been seted up in carbide furnace 2 to realize intermittent type pay-off, fixed mounting oil-cooling subassembly 6 in the annular groove 23, oil-cooling subassembly 6 and carbide furnace 2 interior isolation.
Further, material feeding unit 4 is including first motor 41, first motor 41 is fixed to be located the 3 upper surfaces of a pay-off section of thick bamboo, and first motor 41 is by fixed mounting, the activity of first motor 41 output runs through in the pay-off section of thick bamboo 3 to fixedly connected with spiral leaf 42, first motor 41 drive spiral leaf 42 and rotate, spiral leaf 42 bottom fixedly connected with carousel 43, 2 upper surfaces of carbide furnace are located in the rotation of carousel 43 bottom, sector groove 431 has been seted up on carousel 43 surface, 2 upper surfaces of carbide furnace are laminated to carousel 43 bottom, thereby when carousel 43 rotates, raw materials can intermittent type nature fall into carbide furnace 2 through sector groove 431.
Further, the cold subassembly 6 of oil is including spiral pipe 62, spiral pipe 62 fixed mounting is in ring channel 23, the oil pipe 61, play oil pipe 63 are advanced to spiral pipe 62 both ends fixedly connected with, advance oil pipe 61, go out oil pipe 63 fixed cup joint 2 surface departments of carbide furnace to spiral pipe 62 and 2 inside isolations of carbide furnace can carry out the oil cold.
Further, agitating unit 5 is including second motor 51, second motor 51 fixedly connected with U-shaped piece 52, U-shaped piece 52 bottom end fixed locates the bottom plate 1 upper surface, and second motor 51 is by fixed mounting, second motor 51 output end activity runs through U-shaped piece 52 to fixedly connected with initiative conical gear 53, initiative conical gear 53 meshing is connected with driven conical gear 54, fixedly connected with pivot 55 on the driven conical gear 54, second motor 51 drives initiative conical gear 53 and pivot 55 and rotates, pivot 55 upper end rotation joint base 21 to a plurality of stirring leaves 56 of fixedly connected with, stirring leaf 56 rotates and locates in carbide furnace 2, thereby stirs through a plurality of stirring leaves 56 in to carbide furnace 2 and handles.
Further, 2 bottom surfaces of carbide furnace are fixed to be located on 8 upper ends of water-cooling discharging pipe, and water-cooling discharging pipe 8 is used for the ejection of compact and uses, riser 81 has been cup jointed to 8 external fixed surface of water-cooling discharging pipe, riser 81 internal rotation joint aggregate unit 7, aggregate unit 7 realize closing or opening of water-cooling discharging pipe 8, 8 inner walls of water-cooling discharging pipe rotate the joint have guide ball 82, circular slot 821 has been seted up on guide ball 82 to rotate guide ball 82 and realize intermittent type nature pay-off, annular basin 85 has been seted up in the water-cooling discharging pipe 8, fixed cover has been connect inlet tube 83, outlet pipe 84 on the outer water-cooling discharging pipe 8 of annular basin 85, thereby can cool off biological carbon through annular basin 85.
Furthermore, the linkage device 7 comprises a first rocker arm 71, one end of the first rocker arm 71 is fixedly connected with the output end of the second motor 51, the second motor 51 drives the first rocker arm 71 to rotate, the other end of the first rocker arm 71 is rotatably connected with a second rocker arm 72, the other end of the second rocker arm 72 is rotatably connected with a rack 74, the rack 74 is slidably clamped with a slide rail 73, a guide groove 731 is arranged in the slide rail 73, the rack 74 is slidably arranged in the guide groove 731, so that the first swing arm 71 drives the second swing arm 72 to rotate, and the rack 74 slides back and forth along the guide groove 731, the bottom end of the slide rail 73 is fixedly arranged on the upper surface of the bottom plate 1, the slide rail 73 is fixedly arranged, the rack 74 is engaged with a gear shaft 75, the gear shaft 75 can rotate back and forth, the bottom end of the gear shaft 75 is rotatably arranged on the upper surface of the base plate 1, and the upper end of the gear shaft 75 is fixedly connected with the material guiding ball 82, so that the gear shaft 75 drives the material guiding ball 82 to rotate in a reciprocating manner.
The working principle is as follows: the first motor 41 drives the spiral blade 42 and the rotary disc 43 to rotate in the feeding cylinder 3, the raw material can intermittently feed into the carbonization furnace 2 through the fan-shaped groove 431, thereby when the rotary disc 43 is rotated, the raw material in the feeding cylinder 3 can intermittently fall into the carbonization furnace 2 through the feeding port 22, the temperature of the biochar in the carbonization furnace 2 is high, the temperature reduction treatment is needed, the second motor 51 drives the driving bevel gear 53 and the rotary shaft 55 to rotate, the stirring blade 56 can be rotated, the high-temperature biochar in the carbonization furnace 2 is stirred, the temperature is uniform, the spiral tube 62 is fixedly arranged in the annular groove 23, the isolation from the interior of the carbonization furnace 2 can be realized, the biochar with high temperature in the carbonization furnace 2 is subjected to oil cooling through the spiral tube 62, then, the second motor 51 is linked with the first rocker arm 71 and the second rocker arm 72 to rotate, the rack 74 slides back and forth along the guide groove 731, thereby the guide ball 82 rotates back and forth the discharge pipe in the water cooling 8, realize intermittent type nature ejection of compact to carry out the water-cooling through the annular basin 85 that water-cooling discharging pipe 8 was seted up, reach quick cooling, realize the continuous production effect.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An efficient charcoal preparation facilities, includes bottom plate (1), its characterized in that: the automatic oil-cooling carbonization furnace is characterized in that an annular support (11) is fixedly arranged on the upper surface of the bottom plate (1), a carbonization furnace (2) is fixedly arranged in the annular support (11), an oil-cooling assembly (6) is arranged in the carbonization furnace (2), a feeding barrel (3) is fixedly arranged on the upper end of the carbonization furnace (2), a feeding pipe (31) is sleeved on the outer surface of the feeding barrel (3) in a fixed mode, an upper cover (32) is fixedly arranged on the upper end of the feeding barrel (3), a feeding device (4) is fixedly arranged on the upper cover (32), the bottom end of the feeding device (4) is rotatably connected with the upper end of the carbonization furnace (2), a stirring device (5) is fixedly arranged on the upper surface of the bottom plate (1), a linkage device (7) is fixedly connected on the stirring device (5), the stirring device (5) is rotatably connected with the bottom end of the carbonization furnace (2), a discharging pipe is sleeved on the outer surface of the bottom end of the carbonization furnace (2) and is provided with a water-cooling pipe (8), and the water-cooling discharge pipe (8) is rotationally clamped with the upper end of the linkage device (7).
2. The efficient biochar preparation device as claimed in claim 1, wherein: feed port (22) have been seted up to carbide furnace (2) upper end surface, carbide furnace (2) bottom mounting is equipped with base (21), base (21) are rotated and are connected agitating unit (5), ring channel (23) have been seted up in carbide furnace (2), ring channel (23) internal fixation installs oil cooling subassembly (6).
3. The efficient biochar preparation device as claimed in claim 1, wherein: material feeding unit (4) is including first motor (41), first motor (41) are fixed to be located feed cylinder (3) upper surface, first motor (41) output activity runs through in feed cylinder (3) to fixedly connected with spiral leaf (42), spiral leaf (42) bottom fixedly connected with carousel (43), carousel (43) bottom is rotated and is located carbide furnace (2) upper surface, sector groove (431) have been seted up on carousel (43) surface, carousel (43) bottom laminating carbide furnace (2) upper surface.
4. The efficient biochar preparation device as claimed in claim 2, characterized in that: oil cooling subassembly (6) is including spiral pipe (62), spiral pipe (62) fixed mounting is in ring channel (23), spiral pipe (62) both ends fixedly connected with advances oil pipe (61), goes out oil pipe (63), advance oil pipe (61), go out oil pipe (63) fixed cup joint carbide furnace (2) surface department.
5. The efficient biochar preparation device as claimed in claim 2, characterized in that: agitating unit (5) is including second motor (51), second motor (51) fixedly connected with U-shaped piece (52), bottom end fixing of U-shaped piece (52) locates bottom plate (1) upper surface, U-shaped piece (52) is run through in second motor (51) output activity to fixedly connected with initiative conical gear (53), initiative conical gear (53) meshing is connected with driven conical gear (54), fixedly connected with pivot (55) are gone up in driven conical gear (54), joint base (21) is rotated to pivot (55) upper end to a plurality of stirring leaves (56) of fixedly connected with, stirring leaf (56) rotate locate in carbide furnace (2).
6. The efficient biochar preparation device as claimed in claim 1, wherein: fixed carbide furnace (2) bottom surface of locating in water-cooling discharging pipe (8) upper end, the fixed cover of water-cooling discharging pipe (8) surface has connect riser (81), riser (81) internal rotation joint aggregate unit (7), water-cooling discharging pipe (8) inner wall rotates the joint and has guide ball (82), circular slot (821) have been seted up on guide ball (82), annular basin (85) have been seted up in water-cooling discharging pipe (8), the fixed cover has been connected inlet tube (83), outlet pipe (84) on outer water-cooling discharging pipe (8) of annular basin (85).
7. The efficient biochar preparation device as claimed in claim 6, wherein: the linkage device (7) comprises a first rocker arm (71), one end of the first rocker arm (71) is fixedly connected with the output end of a second motor (51), the other end of the first rocker arm (71) is rotatably connected with a second rocker arm (72), the other end of the second rocker arm (72) is rotatably connected with a rack (74), the rack (74) is slidably connected with a sliding rail (73), a guide groove (731) is formed in the sliding rail (73), the rack (74) is slidably arranged in the guide groove (731), the bottom end of the sliding rail (73) is fixedly arranged on the upper surface of the bottom plate (1), the rack (74) is meshed with a gear shaft (75), the bottom end of the gear shaft (75) is rotatably arranged on the upper surface of the bottom plate (1), and the upper end of the gear shaft (75) is fixedly connected with a material guide ball (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122851791.7U CN216236855U (en) | 2021-11-20 | 2021-11-20 | Efficient biochar preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122851791.7U CN216236855U (en) | 2021-11-20 | 2021-11-20 | Efficient biochar preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216236855U true CN216236855U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122851791.7U Expired - Fee Related CN216236855U (en) | 2021-11-20 | 2021-11-20 | Efficient biochar preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216236855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646263A (en) * | 2022-10-27 | 2023-01-31 | 南通图海机械有限公司 | Powder isotropic symmetry is inhaled with negative pressure to glue mixing equipment |
-
2021
- 2021-11-20 CN CN202122851791.7U patent/CN216236855U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646263A (en) * | 2022-10-27 | 2023-01-31 | 南通图海机械有限公司 | Powder isotropic symmetry is inhaled with negative pressure to glue mixing equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |