CN210914496U - Dust-proof storage bin - Google Patents
Dust-proof storage bin Download PDFInfo
- Publication number
- CN210914496U CN210914496U CN201921602323.2U CN201921602323U CN210914496U CN 210914496 U CN210914496 U CN 210914496U CN 201921602323 U CN201921602323 U CN 201921602323U CN 210914496 U CN210914496 U CN 210914496U
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- pipe
- fixedly connected
- dust
- sealing plate
- plate
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Abstract
The utility model discloses a dust-proof storage bin, which relates to the technical field of storage bins and adopts the technical scheme that the dust-proof storage bin comprises a storage bin body, a feeding hole and a discharging hole, wherein the discharging hole is provided with a dust-proof device, the dust-proof device comprises a feeding pipe vertically and fixedly connected with the feeding hole, two through holes arranged on the inner wall of the feeding pipe, a rotating shaft with two ends respectively rotatably connected with the inner walls of the two through holes and horizontally arranged, a sealing plate fixedly connected with the rotating shaft and two torsional springs respectively sleeved at the two ends of the rotating shaft; opposite ends of the two torsion springs are fixedly connected to two sides of the sealing plate respectively, and ends far away from each other of the two torsion springs are fixedly connected to opposite inner sides of the two through holes respectively; and a material guide assembly is installed at the top of the stock bin body. The utility model discloses a set up the dust-proof device, can reduce the dust and get into the feed bin this internal, thus can reduce the influence of dust to the material quality.
Description
Technical Field
The utility model relates to a feed bin technical field, more specifically the saying so, it relates to a dust separation feed bin.
Background
In order to improve the production efficiency, a preparation bin is arranged above the mixer, so that a batch of prepared materials always wait for mixing, the production efficiency can be improved by 30 percent, and the advantage of the high-efficiency mixer can be embodied.
In the prior art, reference may be made to a chinese utility model patent with an authorization publication number of CN208800070U, which discloses a horizontal mixing bunker of lithium ion battery electrode materials with a pressure balancing device, comprising a mixing bunker body, wherein a screw shaft driven to rotate by a motor is axially arranged at the middle part in the mixing bunker body, a feeding port is arranged at the upper part of one end of the mixing bunker body, and a discharging port is arranged at the lower part of the other end of the mixing bunker body; mixing bunker body upper portion is provided with booster compressor and decompressor, still be provided with the atmospheric pressure balance subassembly on the mixing bunker body, the atmospheric pressure balance subassembly include one with the internal cover body that communicates of mixing bunker, the internal middle part of cover is provided with the drum piece of useful elastic material preparation, the upper and lower surface of drum piece all pastes with the sheetmetal with power electric connection respectively, the internal upper portion of cover is provided with the last electrode piece with decompressor electric connection, the internal lower part of cover is provided with the lower electrode piece with booster compressor electric connection. The device has simple structure and convenient use.
However, the dust isolating device is not arranged at the feeding port, so that dust easily enters the bin body from the feeding port, and the dust is easily mixed into the material in the bin body, so that the quality of the material is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a dust separation feed bin, it is through setting up the dust separation device, can reduce the dust and get into this internal, thus can reduce the influence of dust to the material quality.
In order to achieve the above purpose, the utility model provides a following technical scheme: a dust-proof storage bin comprises a storage bin body, a feeding opening and a discharging opening, wherein a dust-proof device is installed at the discharging opening and comprises a feeding pipe vertically and fixedly connected to the feeding opening, two through holes formed in the inner wall of the feeding pipe, a rotating shaft, a sealing plate and two torsion springs, wherein the two ends of the rotating shaft are respectively rotatably connected to the inner walls of the two through holes and are horizontally arranged, the sealing plate is fixedly connected to the rotating shaft, and the two torsion springs are respectively sleeved at the two ends of the rotating shaft; opposite ends of the two torsion springs are fixedly connected to two sides of the sealing plate respectively, and ends far away from each other of the two torsion springs are fixedly connected to opposite inner sides of the two through holes respectively; and a material guide assembly is installed at the top of the stock bin body.
By adopting the technical scheme, when the materials are required to be fed into the stock bin body, the materials are poured into the feeding pipe along one side of the sealing plate, the sealing plate rotates downwards under the action of the gravity of the materials, the torsion spring is compressed by the rotation of the sealing plate, and the torsion spring is in a compressed state; when the top of closing plate was not during atress, the closing plate resets under the effect of torsional spring this moment to can reduce the dust and get into this internal, thus can reduce the influence of dust to the material quality.
The utility model discloses further set up to: the material guiding assembly comprises a material guiding pipe fixedly connected to the top of the bin body and arranged in a downward inclination manner and a vertical pipe fixedly connected to the bottom of the material guiding pipe; one end of the vertical pipe, which is far away from the material guide pipe, is arranged towards one side of the sealing plate.
Through adopting above-mentioned technical scheme, through setting up passage and standpipe, the one side downstream of the material edge closing plate of being convenient for to be convenient for drive closing plate and rotate.
The utility model discloses further set up to: the sealing plate fixing device is characterized in that a fixing mechanism for fixing the sealing plate is installed on the feeding pipe, and the fixing mechanism comprises a supporting plate fixedly connected to the inner wall of the feeding pipe and located below the rotating shaft and a fixing assembly installed on the side wall of the feeding pipe and used for fixing the sealing plate.
Through adopting above-mentioned technical scheme, through setting up fixed establishment, be convenient for fix the closing plate to can reduce some heavier objects and get into this internal possibility of feed bin.
The utility model discloses further set up to: the fixing component comprises a horizontal plate vertically and fixedly connected with the outer side wall of the feeding pipe, a vertical plate vertically and fixedly connected with one end of the horizontal plate far away from the feeding pipe, a bolt connected to the vertical plate in a sliding manner along the radial direction of the sealing plate, a limiting block sleeved and fixed on the bolt, a spring sleeved on the bolt and a jack arranged on the outer peripheral surface of the sealing plate; the plug pin penetrates through the vertical plate, one end of the plug pin penetrates through the side wall of the feeding pipe and is inserted into the jack, and the other end of the plug pin is fixedly connected with a handle; the limiting block is positioned between the handle and the feeding pipe; and two ends of the spring are fixedly connected to the limiting block and the vertical plate respectively.
By adopting the technical scheme, when the sealing plate needs to be rotated, the bolt is pulled by the pulling handle to separate the bolt from the jack, so that the sealing plate can be rotated, moreover, the bolt moves to drive the limiting block to move, the limiting block moves to compress the spring, and the spring is in a compressed state; when needs are fixed to the closing plate, make the closing plate reset to backup pad department earlier, then loosen the handle, the stopper makes bolt and jack peg graft under the effect of spring this moment to alright fix easy operation, convenience like this to the closing plate.
The utility model discloses further set up to: the bottom rigid coupling of stopper has the slider, the spout that is used for supplying the slider to slide along the radial of closing plate is seted up at the top of horizontal plate.
Through adopting above-mentioned technical scheme, the spout has the guide effect to the slider to can reduce the stopper and take place the possibility of deviating at the radial in-process that slides along the closing plate.
The utility model discloses further set up to: the horizontal plate is provided with a limiting assembly for limiting the sliding block, and the limiting assembly comprises a horizontal groove, a supporting block, a screw rod, a first rack and a second rack, wherein the horizontal groove is formed in one side of the horizontal plate and is communicated with the sliding groove; the teeth of the first rack can be inserted into the grooves of the second rack.
Through adopting above-mentioned technical scheme, when needs are fixed the bolt, remove to the direction that is close to the second rack through rotating the first rack of screw drive, like this alright make the tooth of first rack peg graft in the groove of second rack to alright fix the bolt, therefore just need not operating personnel and pull the handle all the time at the closing plate rotation in-process.
The utility model discloses further set up to: and a cleaning assembly used for cleaning the inner wall of the material guide pipe is installed at the top of the stock bin body.
Through adopting above-mentioned technical scheme, through setting up clean subassembly, be convenient for handle the dust in the guide tube, in the standpipe and the closing plate top, therefore can reduce operating personnel's intensity of labour.
The utility model discloses further set up to: the cleaning assembly comprises a first fan arranged at the top of the storage bin body, an annular pipe sleeved and fixed on the outer side wall of the material guide pipe and a plurality of short pipes sequentially communicated with the inner peripheral surface of the annular pipe along the circumferential direction of the annular pipe; the air outlet of the first fan is communicated with the annular pipe through a pipeline; one end of each short pipe, which is far away from the annular pipe, is communicated with the inner cavity of the material guide pipe and is obliquely arranged on the inner wall of the material guide pipe; the second fan is installed at the top of the bin body, and an air inlet of the second fan is communicated with the inner cavity of the feeding pipe through a plurality of pipelines.
Through adopting above-mentioned technical scheme, start first fan and second fan, the wind that first fan produced this moment blows to in the stock guide behind annular tube and nozzle stub in proper order, then can blow the dust at closing plate top under the effect of standpipe and play, can suck away these dusts under the effect of second fan this moment, therefore be convenient for handle the dust at closing plate top in, in the standpipe to the stock guide.
To sum up, the utility model discloses compare and have following beneficial effect in prior art:
1. when feeding is needed to the interior of the stock bin body, pouring materials into the feeding pipe along one side of the sealing plate, enabling the sealing plate to rotate downwards under the action of gravity of the materials, enabling the sealing plate to rotate to compress the torsion spring, and enabling the torsion spring to be in a compressed state; when the top of the sealing plate is not stressed, the sealing plate is reset under the action of the torsion spring, so that dust entering the bin body can be reduced, and the influence of the dust on the quality of materials can be reduced;
2. when the sealing plate needs to be rotated, the bolt is pulled by the pulling handle to separate the bolt from the jack, so that the sealing plate can be rotated, moreover, the bolt moves to drive the limiting block to move, the limiting block moves to compress the spring, and the spring is in a compressed state; when the sealing plate needs to be fixed, the sealing plate is reset to the supporting plate, then the handle is loosened, and the bolt is inserted into the jack under the action of the spring by the limiting block, so that the sealing plate can be fixed, and the operation is simple and convenient;
3. start first fan and second fan, the wind that first fan produced this moment blows to in the stock guide behind annular tube and nozzle stub in proper order, then can blow up the dust at closing plate top under the effect of standpipe, can inhale these dusts under the effect of second fan this moment, therefore be convenient for handle the dust at closing plate top in, in the standpipe to the stock guide.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is an exploded view of the highlighted torsion spring of the embodiment;
FIG. 3 is a schematic view showing the structure of the fixing mechanism in the embodiment;
fig. 4 is a partially enlarged view of a in fig. 3.
In the figure: 1. a bin body; 11. a feeding port; 12. a discharge outlet; 2. a dust-proof device; 21. a feed pipe; 22. a through hole; 23. a rotating shaft; 24. a sealing plate; 25. a torsion spring; 3. a material guiding assembly; 31. a material guide pipe; 32. a vertical tube; 4. a fixing mechanism; 41. a support plate; 42. a fixing assembly; 421. a horizontal plate; 422. a vertical plate; 423. a bolt; 424. a limiting block; 425. a spring; 426. a jack; 427. a handle; 428. a slider; 429. a chute; 5. a limiting component; 51. a horizontal groove; 52. a support block; 53. a screw; 54. a first rack; 55. a second rack; 6. a cleaning assembly; 61. a first fan; 62. an annular tube; 63. a short pipe; 64. and a second fan.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b): a dust-proof storage bin is shown in figure 1 and comprises a storage bin body 1, a feeding opening 11 and a discharging opening 12, wherein a dust-proof device 2 is arranged at the discharging opening 12.
As shown in fig. 1 and 2, the dust-proof device 2 includes a feeding pipe 21 vertically fixed to the feeding port 11, two through holes 22 opened in an inner wall of the feeding pipe 21, a rotating shaft 23 with two ends respectively rotatably connected to inner walls of the two through holes 22 and horizontally disposed, a sealing plate 24 fixed to the rotating shaft 23, and two torsion springs 25 respectively sleeved at two ends of the rotating shaft 23; opposite ends of the two torsion springs 25 are respectively fixedly connected to two sides of the sealing plate 24, and mutually far ends of the two torsion springs 25 are respectively fixedly connected to opposite inner sides of the two through holes 22; the top of the storage bin body 1 is provided with a material guiding component 3. When feeding into the bin body 1 is needed, pouring the material into the feeding pipe 21 along one side of the sealing plate 24, wherein the sealing plate 24 rotates downwards under the action of the gravity of the material, the torsion spring 25 is compressed by the rotation of the sealing plate 24, and the torsion spring 25 is in a compressed state; when the top of the sealing plate 24 is not stressed, the sealing plate 24 is reset under the action of the torsion spring 25, so that the dust can be reduced to enter the stock bin body 1, and the influence of the dust on the quality of materials can be reduced.
The material guiding component 3 comprises a material guiding pipe 31 fixedly connected to the top of the silo body 1 and arranged obliquely downwards and a vertical pipe 32 fixedly connected to the bottom of the material guiding pipe 31; an end of the standpipe 32 remote from the guide pipe 31 is disposed toward a side of the sealing plate 24. By providing the guide tube 31 and the vertical tube 32, the downward movement of the material along one side of the sealing plate 24 is facilitated, thereby facilitating the rotation of the sealing plate 24.
As shown in fig. 2 and 3, a fixing mechanism 4 for fixing the sealing plate 24 is mounted on the feeding pipe 21, and the fixing mechanism 4 includes a supporting plate 41 fixedly connected to the inner wall of the feeding pipe 21 and located below the rotating shaft 23, and a fixing assembly 42 mounted on the side wall of the feeding pipe 21 for fixing the sealing plate 24; the fixing component 42 comprises a horizontal plate 421 vertically fixedly connected to the outer side wall of the feeding pipe 21, a vertical plate 422 vertically fixedly connected to one end of the horizontal plate 421 away from the feeding pipe 21, a bolt 423 connected to the vertical plate 422 in a sliding manner along the radial direction of the sealing plate 24, a limiting block 424 sleeved and fixed on the bolt 423, a spring 425 sleeved on the bolt 423 and a jack 426 arranged on the outer peripheral surface of the sealing plate 24; the plug 423 penetrates through the vertical plate 422, one end of the plug 423 penetrates through the side wall of the feeding pipe 21 to be inserted into the jack 426, and the other end of the plug 423 is fixedly connected with a handle 427; the limiting block 424 is positioned between the handle 427 and the feeding pipe 21, the bottom of the limiting block 424 is fixedly connected with a sliding block 428, and the top of the horizontal plate 421 is provided with a sliding groove 429 for the sliding block 428 to slide along the radial direction of the sealing plate 24; two ends of the spring 425 are respectively fixed to the stop block 424 and the vertical plate 422. When the sealing plate 24 needs to be rotated, the handle 427 is pulled to pull the bolt 423 to separate the bolt 423 from the jack 426, so that the sealing plate 24 can be rotated, furthermore, the bolt 423 moves to drive the limiting block 424 to move, the limiting block 424 moves to compress the spring 425, and the spring 425 is in a compressed state; when the sealing plate 24 needs to be fixed, the sealing plate 24 is reset to the supporting plate 41, then the handle 427 is loosened, and the limiting block 424 enables the plug pin 423 to be plugged into the plug hole 426 under the action of the spring 425, so that the sealing plate 24 can be fixed, and the possibility that some heavy objects fall into the bin body 1 due to accidents can be reduced.
As shown in fig. 3 and 4, a limiting component 5 for limiting the sliding block 428 is mounted on the horizontal plate 421, the limiting component 5 includes a horizontal groove 51 opened on one side of the horizontal plate 421 and communicated with the sliding groove 429, a supporting block 52 fixedly connected to one end of the horizontal groove 51 far from the sliding groove 429, a screw 53 screwed to the supporting block 52, a first rack 54 rotatably connected to one end of the screw 53 close to the sliding groove 429 through a bearing and slidably connected to the horizontal groove 51, and a second rack 55 fixedly connected to one side of the sliding block 428 close to the horizontal groove 51; the teeth of the first rack 54 can be inserted into the grooves of the second rack 55. When the latch 423 needs to be fixed, the screw 53 is rotated to drive the first rack 54 to move towards the second rack 55, so that the teeth of the first rack 54 are inserted into the grooves of the second rack 55, and the latch 423 can be fixed, and therefore, an operator does not need to pull the handle 427 all the time during the rotation of the sealing plate 24.
As shown in fig. 1, a cleaning assembly 6 for cleaning the inner wall of the material guiding pipe 31 is installed at the top of the silo body 1, and the cleaning assembly 6 includes a first fan 61 installed at the top of the silo body 1, an annular pipe 62 sleeved and fixed on the outer side wall of the material guiding pipe 31, and a plurality of short pipes 63 sequentially communicated with the inner circumferential surface of the annular pipe 62 along the circumferential direction of the annular pipe 62; the air outlet of the first fan 61 is communicated with the annular pipe 62 through a pipeline; one end of each short pipe 63, which is far away from the annular pipe 62, is communicated with the inner cavity of the material guide pipe 31 and is obliquely arranged on the inner wall of the material guide pipe 31; the top of the silo body 1 is provided with a second fan 64, and an air inlet of the second fan 64 is communicated with the inner cavity of the feeding pipe 21 through a plurality of pipelines. The first fan 61 and the second fan 64 are started, at this time, the wind generated by the first fan 61 passes through the annular pipe 62 and the short pipe 63 in sequence and then blows into the material guiding pipe 31, then the dust on the top of the sealing plate 24 can be blown up under the action of the vertical pipe 32, and at this time, the dust can be sucked away under the action of the second fan 64, so that the dust in the material guiding pipe 31, in the vertical pipe 32 and on the top of the sealing plate 24 can be conveniently treated.
The working principle of the dust-proof bin is as follows:
when feeding into the silo body 1 is needed, the pulling handle 427 pulls the plug pin 423 to separate the plug pin 423 from the jack 426, and then the rotating screw 53 drives the first rack 54 to move towards the direction close to the second rack 55, so that the teeth of the first rack 54 can be inserted into the grooves of the second rack 55, and the plug pin 423 can be fixed; then, the material is poured into the material guiding pipe 31, and at this time, the sealing plate 24 rotates downwards under the action of the gravity of the material, so that the material can enter the stock bin body 1.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a dust separation feed bin, includes feed bin body (1), pan feeding mouth (11) and bin outlet (12), its characterized in that: the dust separation device (2) is arranged at the discharge port (12), and the dust separation device (2) comprises a feeding pipe (21) vertically and fixedly connected with the feeding port (11), two through holes (22) formed in the inner wall of the feeding pipe (21), a rotating shaft (23) with two ends respectively rotatably connected to the inner walls of the two through holes (22) and horizontally arranged, a sealing plate (24) fixedly connected to the rotating shaft (23) and two torsion springs (25) respectively sleeved at two ends of the rotating shaft (23); opposite ends of the two torsion springs (25) are respectively and fixedly connected to two sides of the sealing plate (24), and far ends of the two torsion springs (25) are respectively and fixedly connected to opposite inner sides of the two through holes (22); the top of the stock bin body (1) is provided with a material guide assembly (3).
2. The dust insulation bunker of claim 1, wherein: the material guiding assembly (3) comprises a material guiding pipe (31) fixedly connected to the top of the storage bin body (1) and arranged in a downward inclination mode, and a vertical pipe (32) fixedly connected to the bottom of the material guiding pipe (31); one end of the vertical pipe (32) far away from the material guide pipe (31) is arranged towards one side of the sealing plate (24).
3. The dust insulation bunker of claim 1, wherein: the sealing plate fixing device is characterized in that a fixing mechanism (4) used for fixing the sealing plate (24) is installed on the feeding pipe (21), and the fixing mechanism (4) comprises a supporting plate (41) fixedly connected to the inner wall of the feeding pipe (21) and located below the rotating shaft (23) and a fixing assembly (42) installed on the side wall of the feeding pipe (21) and used for fixing the sealing plate (24).
4. A dust-insulated silo according to claim 3, characterized in that: the fixing component (42) comprises a horizontal plate (421) vertically and fixedly connected to the outer side wall of the feeding pipe (21), a vertical plate (422) vertically and fixedly connected to one end, far away from the feeding pipe (21), of the horizontal plate (421), a bolt (423) connected to the vertical plate (422) in a sliding mode along the radial direction of the sealing plate (24), a limiting block (424) fixedly sleeved on the bolt (423), a spring (425) sleeved on the bolt (423) and a jack (426) arranged on the outer peripheral surface of the sealing plate (24); the plug pin (423) penetrates through the vertical plate (422) to be arranged, one end of the plug pin (423) penetrates through the side wall of the feeding pipe (21) to be inserted into the jack (426), and the other end of the plug pin (423) is fixedly connected with a handle (427); the limiting block (424) is positioned between the handle (427) and the feeding pipe (21); two ends of the spring (425) are respectively and fixedly connected with the limiting block (424) and the vertical plate (422).
5. The dust insulation bunker of claim 4, wherein: the bottom of the limiting block (424) is fixedly connected with a sliding block (428), and the top of the horizontal plate (421) is provided with a sliding groove (429) for the sliding block (428) to slide along the radial direction of the sealing plate (24).
6. The dust insulation bunker of claim 5, wherein: the horizontal plate (421) is provided with a limiting component (5) for limiting the sliding block (428), the limiting component (5) comprises a horizontal groove (51) which is arranged on one side of the horizontal plate (421) and communicated with the sliding groove (429), a supporting block (52) which is fixedly connected to one end of the horizontal groove (51) far away from the sliding groove (429), a screw (53) which is in threaded connection with the supporting block (52), a first rack (54) which is rotatably connected to one end of the screw (53) close to the sliding groove (429) and is connected to the horizontal groove (51) in a sliding manner, and a second rack (55) which is fixedly connected to one side of the sliding block (428) close to the horizontal groove (51); the teeth of the first rack (54) can be inserted into the grooves of the second rack (55).
7. A dust-insulated silo according to claim 2, characterized in that: and a cleaning assembly (6) for cleaning the inner wall of the material guide pipe (31) is mounted at the top of the stock bin body (1).
8. The dust insulation bunker of claim 7, wherein: the cleaning assembly (6) comprises a first fan (61) arranged at the top of the storage bin body (1), an annular pipe (62) sleeved and fixed on the outer side wall of the material guide pipe (31) and a plurality of short pipes (63) sequentially communicated with the inner circumferential surface of the annular pipe (62) along the circumferential direction of the annular pipe (62); an air outlet of the first fan (61) is communicated with the annular pipe (62) through a pipeline; one end of each short pipe (63) far away from the annular pipe (62) is communicated with the inner cavity of the material guide pipe (31) and is obliquely arranged on the inner wall of the material guide pipe (31); the top of feed bin body (1) is installed second fan (64), the air intake of second fan (64) is through the inner chamber intercommunication of a plurality of pipelines with inlet pipe (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921602323.2U CN210914496U (en) | 2019-09-24 | 2019-09-24 | Dust-proof storage bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921602323.2U CN210914496U (en) | 2019-09-24 | 2019-09-24 | Dust-proof storage bin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210914496U true CN210914496U (en) | 2020-07-03 |
Family
ID=71349812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921602323.2U Expired - Fee Related CN210914496U (en) | 2019-09-24 | 2019-09-24 | Dust-proof storage bin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210914496U (en) |
-
2019
- 2019-09-24 CN CN201921602323.2U patent/CN210914496U/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: 20200703 |