CN214063174U - Dust removal structure for air filter - Google Patents
Dust removal structure for air filter Download PDFInfo
- Publication number
- CN214063174U CN214063174U CN202021489767.2U CN202021489767U CN214063174U CN 214063174 U CN214063174 U CN 214063174U CN 202021489767 U CN202021489767 U CN 202021489767U CN 214063174 U CN214063174 U CN 214063174U
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- CN
- China
- Prior art keywords
- dust
- dust removal
- fixedly connected
- exhaust pipe
- air filter
- 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
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- 239000000428 dust Substances 0.000 title claims abstract description 138
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000005485 electric heating Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 10
- 239000002216 antistatic agent Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model provides a dust removal structure for an air filter, which belongs to the technical field of air filters and comprises a bottom plate, a shell and an air filter, wherein the surface of a cross rod is fixedly connected with a cleaning brush, a transverse axis in the shell is provided with a rotating shaft, one end of the rotating shaft, which is far away from the shell, is rotatably connected with a servo motor, the surface of the rotating shaft is fixedly connected with a fixed disk, and one end of the rotating shaft, which is far away from the fixed disk, is movably connected with a positioning disk; the utility model has high efficiency, the cleaning brush is arranged, the dust removal effect is improved, and the lower limiting block can be more tightly pressed on the surface of the air filter by the compression spring, thereby ensuring the stability of the air filter in the rotating dust removal process; and through dust removal mechanism, realized cleaning the effective unified collection of coming out the dust from air cleaner, promoted air cleaner availability factor, improved device's practicality.
Description
Technical Field
The utility model relates to an air cleaner technical field, more specifically relates to a dust removal structure for air cleaner.
Background
With the development of the transportation industry, the number of automobiles is more and more, and in the running process of an automobile engine, fuel is instantaneously combusted and exploded in a cylinder to generate power to push a piston to move to continuously rotate. In order to provide clean air for the cylinder, at present, an air filter is generally arranged at the front end of the air supply of the cylinder to filter the entering external air, and when the automobile reaches a certain driving mileage or running time and is maintained, the old dirty air filter is replaced and a new air filter is installed. In the actual running process of an automobile, because of more road dust, the air filter is heavier in load and often does not reach the mileage specified for running, and the surface of the air filter is filled with dust, on one hand, the air inlet resistance is increased, the fuel explosion power is influenced to a certain degree, and the power output is influenced; on the other hand, the dust removal structure of current air cleaner most can't be with effectively collecting the dust that cleans out from air cleaner, just directly discharges it to the outside air in, leads to the dust can scatter everywhere, has polluted environment's danger on the one hand, and on the other hand if not in time collects the dust, also can cause air cleaner secondary pollution to influence filtration efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem in the background to provide a dust removal structure for air cleaner.
In order to achieve the above object, the utility model provides a following technical scheme: a dust removal structure for an air filter comprises a base plate, a shell and the air filter, and is characterized in that a support frame is fixedly connected to the top of the base plate, the shell is fixedly connected to the top of the support frame, a first dust exhaust pipe is connected to the axis of the bottom of the shell in a penetrating manner, an air blower is connected to the outer side of the first dust exhaust pipe in a penetrating manner, a dust removal mechanism is arranged at one end, away from the shell, of the first dust exhaust pipe, a cross rod is fixedly connected to the inner side wall of the shell, a cleaning brush is fixedly connected to the surface of the cross rod, a rotating shaft is arranged on the transverse axis line in the shell, a servo motor is rotatably connected to one end, away from the shell, of the rotating shaft, a fixed disk is fixedly connected to the surface of the rotating shaft, a lower limiting block is fixedly connected to the bottom of the surface of the fixed disk, a sliding groove is formed in the top of the surface of the fixed disk, and a sliding block is connected to the inside of the sliding groove, the utility model discloses an air cleaner, including slider, fixed disk, air cleaner, servo motor, the slider is kept away from down the spacing piece, the one side of spacing piece and the crack department between the spout are provided with compression spring down, the spacing piece is gone up to one side fixedly connected with of spout is kept away from to the slider, the one end swing joint that the fixed disk was kept away from to the axis of rotation has the positioning disk, one side that the fixed disk was kept away from to the positioning disk is provided with fixation nut, air cleaner is installed to the crack department between positioning disk and the fixed disk, and air cleaner's inside through connection has the axis of rotation, servo motor's one side spiro union is kept away from to the shell has the spiral shell lid, the outside fixedly connected with adjusting handle of spiral shell lid.
Preferably, the dust removing mechanism comprises a dust removing box, an exhaust pipe, an exhaust fan, an electric heating plate, a vibrator, a shunt pipe, an atomizing nozzle, a water inlet pipe, a second dust removing pipe and a dust collecting cloth bag, the exhaust pipe is connected to the top of the dust removing box in a penetrating manner, the exhaust fan is communicated with the exhaust pipe in a penetrating manner, the electric heating plate is fixedly connected to the bottom of the inner part of the dust removing box and is obliquely installed at 15-25 degrees, the vibrator is fixedly connected to the bottom of the electric heating plate, the shunt pipe is fixedly connected to the inner side wall of the dust removing box, the atomizing nozzles distributed at equal intervals are communicated with the bottom of the shunt pipe in a penetrating manner, the atomizing nozzles are located above the first dust removing pipe, the water inlet pipe is communicated with one end of the shunt pipe, which is far away from the dust removing box, the water inlet pipe is communicated with the output, one end of the second dust exhaust pipe, which is far away from the dust removal box, is provided with a dust collection cloth bag, and the dust collection cloth bag is detachably connected with the second dust exhaust pipe.
Preferably, the inclined lower end surface of the electric heating plate and the second dust exhaust pipe are positioned on the same horizontal plane; and the surface of the electric heating plate is provided with a waterproof heat-conducting coating layer.
Preferably, the cleaning brushes are distributed at equal intervals in the horizontal direction and are tightly attached to the upper end face of the air filter; and the cleaning brush is made of flexible antistatic material.
Preferably, the lower limiting block and the upper limiting block are both arc-shaped structures; and the air filter are symmetrically arranged by taking the air filter as a transverse central axis.
Preferably, the servo motor and the blower are both electrically connected with an external power supply; and the output end of the servo motor is rotationally connected with the rotating shaft.
Preferably, the exhaust fan, the electric heating plate and the vibrator are electrically connected with an external power supply.
The utility model provides a dust removal structure for air cleaner has following beneficial effect:
1. the dust removal structure for the air filter is provided with a cleaning brush, the air filter penetrates through a rotating shaft, one end of the air filter, which is far away from a screw cap, is placed between a lower limiting block and an upper limiting block, and a compression spring is used for compressing the lower limiting block to the surface of the air filter under the sliding fit of a sliding block in a sliding groove according to the elastic action of the compression spring, so that the air filter is more stable in the rotating dust removal process; then, the positioning disc is firmly pressed at one end of the air filter far away from the limiting block through the rotation of the fixing nut, so that the air filter can be firmly installed at a crack between the positioning disc and the fixed disc, the adjusting hand wheel can be grasped, the screw cap is fixedly connected with the outer side of the shell in a screw joint mode to form a closed space, the servo motor is started, the rotating shaft drives the air filter to rotate, and then under the matching that a plurality of cleaning brushes distributed at equal intervals are tightly attached to the upper end face of the air filter, dust on the surface of the air filter is cleaned out, and under the suction effect of the air blower, the air filter is introduced into the dust removal mechanism through the first dust exhaust pipe; the problem that the surface area of the air filter is full of dust to influence power output is solved, and the dust removal effect is improved; and compression spring can compress tightly in air cleaner's surface down the stopper more, and then has ensured its stability at the rotation dust removal in-process.
2. The dust removing structure for the air filter is provided with a dust removing mechanism, wherein a water inlet pipe is communicated with the output end of external water diversion equipment of a faucet, water is conveyed to an atomizing spray head through the water inlet pipe and a diversion pipe, a dust removing box is sprayed comprehensively, so that the mass of dust introduced into airflow of the dust removing box from a first dust removing pipe is increased after the dust meets water to form sludge, the sludge falls into an electric heating plate, the electric heating plate shakes under the cooperation of a vibrator to accelerate the evaporation of water in the dust removing box, a plurality of dust particles are formed, and the dust particles fall into a dust collecting cloth bag through a second dust removing pipe along the inclined direction of the electric heating plate; meanwhile, the clean gas with dust removed can be released to the external environment through the exhaust pipe under the suction action of the exhaust fan; the dust collector has the advantages that the effective unified collection of dust cleaned from the air filter is realized, the phenomenon that the dust is directly discharged to the external environment by the dust removing structure of the existing air filter to cause the secondary pollution of the polluted environment and the air filter is avoided, and the service efficiency of the dust collector is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall three-dimensional cross-sectional structure of the present invention.
Fig. 3 is a schematic cross-sectional view of a portion a in fig. 2 according to the present invention.
Fig. 4 is a schematic diagram of the internal structure of the compartment of the present invention.
In FIGS. 1-4: the cleaning device comprises a bottom plate 1, a shell 2, an air filter 3, a servo motor 4, a rotating shaft 5, a cleaning brush 6, a cross rod 7, a fixed disc 8, a positioning disc 9, a fixed nut 10, a lower limiting block 11, an upper limiting block 12, a sliding chute 13, a sliding block 14, a compression spring 15, a screw cap 16, an adjusting hand wheel 17, a first dust exhaust pipe 18, a blower 19, a dust removal mechanism 20, a dust removal box 201, an exhaust pipe 202, an exhaust fan 203, an electric heating plate 204, a vibrator 205, a shunt pipe 206, an atomizing spray nozzle 207, a water inlet pipe 208, a second dust exhaust pipe 209, a dust collection 210 and a support frame 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the present invention, a dust removing structure for an air cleaner includes a bottom plate 1, a housing 2 and an air cleaner 3, and is characterized in that a supporting frame 21 is fixedly connected to the top of the bottom plate 1, the housing 2 is fixedly connected to the top of the supporting frame 21, a first dust exhaust pipe 18 is connected to the axis of the bottom of the housing 2 in a penetrating manner, an air blower 19 is connected to the outer side of the first dust exhaust pipe 18 in a penetrating manner, a dust removing mechanism 20 is arranged at one end of the first dust exhaust pipe 18 away from the housing 2, a cross rod 7 is fixedly connected to the inner side wall of the housing 2, a cleaning brush 6 is fixedly connected to the surface of the cross rod 7, a rotating shaft 5 is arranged on the transverse axis inside the housing 2, one end of the rotating shaft 5 away from the housing 2 is rotatably connected to a servo motor 4, and a fixing disc 8 is fixedly connected to the surface of the rotating shaft 5, spacing 11 under the bottom fixedly connected with on the surface of fixed disk 8, spout 13 has been seted up at the top on the surface of fixed disk 8, the inside sliding connection of spout 13 has slider 14, one side that spacing 11 was down kept away from to slider 14 and the crack department between spout 13 are provided with pressure spring 15, spacing 12 is gone up to one side fixedly connected with that spout 13 was kept away from to slider 14, the one end swing joint that fixed disk 8 was kept away from to axis of rotation 5 has positioning disk 9, one side that fixed disk 8 was kept away from to positioning disk 9 is provided with fixation nut 10, air cleaner 3 is installed to the crack department between positioning disk 9 and the fixed disk 8, and air cleaner 3's inside through connection has axis of rotation 5, one side spiro union that servo motor 4 was kept away from to shell 2 has spiral shell 16, spiral shell 16's outside fixedly connected with adjusts hand wheel 17.
In this embodiment, the dust removing mechanism 20 includes a dust removing box 201, an exhaust pipe 202, an exhaust fan 203, an electric heating plate 204, a vibrator 205, a shunt pipe 206, an atomizing nozzle 207, a water inlet pipe 208, a second dust removing pipe 209 and a dust collecting cloth bag 210, the top of the dust removing box 201 is connected with the exhaust pipe 202 in a penetrating manner, the exhaust pipe 202 is connected with the exhaust fan 203 in a penetrating manner, the electric heating plate 204 is fixedly connected with the bottom of the dust removing box 201, the electric heating plate 204 is installed in an inclined manner of 15 degrees to 25 degrees, the vibrator 205 is fixedly connected with the bottom of the electric heating plate 204, the shunt pipe 206 is fixedly connected with the inner side wall of the dust removing box 201, the plurality of atomizing nozzles 207 distributed at equal intervals are connected with the bottom of the shunt pipe 206 in a penetrating manner, the atomizing nozzles 207 are located above the first dust removing pipe 18, the water inlet pipe 208 is connected with the end of the shunt pipe 206 far away from the dust removing box 201 in a penetrating manner, and communicated with the output end of the external water diversion equipment of the faucet 208, a second dust exhaust pipe 209 is connected to the outer side of the dust removal box 201 in a penetrating manner, a dust collection cloth bag 210 is arranged at one end of the second dust exhaust pipe 209 far away from the dust removal box 201, and the dust collection cloth bag 210 is detachably connected with the second dust exhaust pipe 209; the dust collected from the air filter 3 is favorably and uniformly and intensively treated, and the pollution to the quality of the outside air is avoided.
In this embodiment, the inclined lower end surface of the electric heating plate 204 and the second dust exhaust pipe 209 are in the same horizontal plane, which is helpful for putting dust into the dust collecting cloth bag 210 more accurately, and improving the dust collecting effect; and the surface of the electric heating plate 204 is provided with a waterproof heat-conducting coating layer, so that the normal use function of the electric heating plate 204 is prevented from being influenced by water mist.
In this embodiment, the cleaning brushes 6 are distributed at equal intervals in the horizontal direction and are tightly attached to the upper end surface of the air filter 3, so that the contact area between the cleaning brushes 6 and the air filter 3 is increased, and the dust removal efficiency is improved; and cleaning brush 6 is made for flexible antistatic material, avoids it to damage air cleaner 3 component structure to and prevent that it from adsorbing the dust on self surface after producing static, lead to reducing dust removal effect.
In this embodiment, the lower limiting block 11 and the upper limiting block 12 are both arc-shaped structures, and can be more attached to the outer ring of the air filter 3, so that the fixing effect of the air filter is enhanced; and both use air cleaner 3 to install as horizontal axis symmetry, ensure air cleaner 3 stability at the dust removal in-process, avoid it to take place the skew, reduce dust removal effect.
In this embodiment, the servo motor 4 and the blower 19 are both electrically connected to an external power supply; and the output end of the servo motor 4 is rotatably connected with the rotating shaft 5.
In this embodiment, the exhaust fan 203, the electric heating plate 204 and the vibrator 205 are all electrically connected to an external power source.
When the dust removing structure for the air filter is used, firstly, a worker passes the air filter 3 through the rotating shaft 5 and places one end, far away from the screw cap 16, of the air filter between the lower limiting block 11 and the upper limiting block 12, wherein the compression spring 15 compresses the lower limiting block 11 on the surface of the air filter 3 under the matching of the sliding block 14 in the sliding groove 13 in accordance with the elastic action of the compression spring, so that the air filter is more stable in the rotating dust removing process; then, the positioning plate 9 is firmly pressed on one end of the air filter 3 far away from the limiting block through the rotation of the fixing nut 10, so that the air filter 3 can be firmly installed at a crack between the fixed plate 8 and the positioning plate 9, the adjusting hand wheel 17 can be grasped, the screw cap 16 is fixed with the outer side of the shell 2 in a threaded manner to form a closed space, the servo motor 4 is started, the rotating shaft 5 drives the air filter 3 to rotate, and then under the matching that a plurality of cleaning brushes 6 which are distributed at equal intervals are tightly attached to the upper end face of the air filter 3, dust on the surface of the air filter is cleaned out, and under the suction action of the air blower 19, the air filter is introduced into the dust removal mechanism 20 through the first dust exhaust pipe 18; then, the water inlet pipe 208 can be communicated with the output end of the external water diversion device of the faucet, water is conveyed through the water inlet pipe 208 and the diversion pipe 206 and then flows down to the atomizing nozzle 207, the dust removal box 201 is sprayed comprehensively, so that the dust introduced into the airflow of the dust removal box 201 from the first dust removal pipe 18 is increased in self-mass after meeting water to form sludge, the sludge falls into the electric heating plate 204, the electric heating plate shakes under the cooperation of the vibrator 205, the evaporation of the water in the dust removal box is accelerated, a plurality of dust particles are formed, and the dust particles roll down to the dust collection cloth bag 210 through the second dust removal pipe 209 along the inclined direction of the electric heating plate 204; at the same time, the dust-removed clean air is discharged to the external environment through the exhaust pipe 202 by the suction of the exhaust fan 203. The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (7)
1. A dust removal structure for an air filter comprises a bottom plate (1), a shell (2) and the air filter (3), and is characterized in that a support frame (21) is fixedly connected to the top of the bottom plate (1), the shell (2) is fixedly connected to the top of the support frame (21), a first dust exhaust pipe (18) is connected to the axis of the bottom of the shell (2) in a penetrating manner, an air blower (19) is connected to the outer side of the first dust exhaust pipe (18) in a penetrating manner, a dust removal mechanism (20) is arranged at one end, far away from the shell (2), of the first dust exhaust pipe (18), a cross rod (7) is fixedly connected to the inner side wall of the shell (2), a cleaning brush (6) is fixedly connected to the surface of the cross rod (7), a rotating shaft (5) is arranged on the horizontal axis inside the shell (2), and one end, far away from the shell (2), of the rotating shaft (5) is rotatably connected with a servo motor (4), the surface of the rotating shaft (5) is fixedly connected with a fixed disc (8), the bottom of the surface of the fixed disc (8) is fixedly connected with a lower limiting block (11), the top of the surface of the fixed disc (8) is provided with a sliding groove (13), the inside of the sliding groove (13) is connected with a sliding block (14), a compression spring (15) is arranged at a crack between one side of the sliding block (14) far away from the lower limiting block (11) and the sliding groove (13), one side of the sliding block (14) far away from the sliding groove (13) is fixedly connected with an upper limiting block (12), one end of the rotating shaft (5) far away from the fixed disc (8) is movably connected with a positioning disc (9), one side of the positioning disc (9) far away from the fixed disc (8) is provided with a fixing nut (10), and an air filter (3) is arranged at the crack between the positioning disc (9) and the fixed disc (8), and the inside through connection of air cleaner (3) has axis of rotation (5), one side spiro union that servo motor (4) was kept away from in shell (2) has screw cap (16), the outside fixedly connected with adjusting hand wheel (17) of screw cap (16).
2. The dust removing structure for an air cleaner according to claim 1, wherein: the dust removal mechanism (20) comprises a dust removal box (201), an exhaust pipe (202), an exhaust fan (203), an electric heating plate (204), a vibrator (205), a shunt pipe (206), an atomizer (207), a water inlet pipe (208), a second dust exhaust pipe (209) and a dust collection cloth bag (210), wherein the exhaust pipe (202) is connected to the top of the dust removal box (201) in a penetrating manner, the exhaust fan (203) is communicated with the interior of the exhaust pipe (202) in a penetrating manner, the electric heating plate (204) is fixedly connected to the bottom of the interior of the dust removal box (201), the electric heating plate (204) is installed in an inclined manner of 15-25 degrees, the vibrator (205) is fixedly connected to the bottom of the electric heating plate (204), the shunt pipe (206) is fixedly connected to the inner side wall of the dust removal box (201), and a plurality of atomizers (207) distributed at equal intervals are communicated with the bottom of the shunt pipe (206), and atomizer (207) are located the top position of first dust exhaust pipe (18), the one end that dust removal case (201) were kept away from in shunt tubes (206) runs through the intercommunication and has inlet tube (208), and inlet tube (208) are linked together with tap diversion equipment's output, the outside through connection of dust removal case (201) has second dust exhaust pipe (209), the one end that dust removal case (201) were kept away from in second dust exhaust pipe (209) is provided with collection dirt sack (210), and collection dirt sack (210) are connected for the detachable mode with second dust exhaust pipe (209).
3. The dust removing structure for an air cleaner according to claim 2, wherein: the inclined lower end surface of the electric heating plate (204) and the second dust exhaust pipe (209) are positioned on the same horizontal plane; and the surface of the electric heating plate (204) is provided with a waterproof heat-conducting coating layer.
4. The dust removing structure for an air cleaner according to claim 1, wherein: the cleaning brushes (6) are distributed at equal intervals in the horizontal direction and are tightly attached to the upper end face of the air filter (3); and the cleaning brush (6) is made of flexible antistatic material.
5. The dust removing structure for an air cleaner according to claim 1, wherein: the lower limiting block (11) and the upper limiting block (12) are both arc-shaped structures; and the two are symmetrically installed by taking the air filter (3) as a transverse central axis.
6. The dust removing structure for an air cleaner according to claim 1, wherein: the servo motor (4) and the air blower (19) are both electrically connected with an external power supply; and the output end of the servo motor (4) is rotationally connected with the rotating shaft (5).
7. The dust removing structure for an air cleaner according to claim 2, wherein: the exhaust fan (203), the electric heating plate (204) and the vibrator (205) are all electrically connected with an external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021489767.2U CN214063174U (en) | 2020-07-25 | 2020-07-25 | Dust removal structure for air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021489767.2U CN214063174U (en) | 2020-07-25 | 2020-07-25 | Dust removal structure for air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063174U true CN214063174U (en) | 2021-08-27 |
Family
ID=77384958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021489767.2U Expired - Fee Related CN214063174U (en) | 2020-07-25 | 2020-07-25 | Dust removal structure for air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063174U (en) |
-
2020
- 2020-07-25 CN CN202021489767.2U patent/CN214063174U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210827 |