CN112206590B - Dry type dust removing fan - Google Patents
Dry type dust removing fan Download PDFInfo
- Publication number
- CN112206590B CN112206590B CN202011004516.5A CN202011004516A CN112206590B CN 112206590 B CN112206590 B CN 112206590B CN 202011004516 A CN202011004516 A CN 202011004516A CN 112206590 B CN112206590 B CN 112206590B
- Authority
- CN
- China
- Prior art keywords
- dust
- chamber
- filter cartridge
- filtering cylinder
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the field of dust removal fans, and discloses a dry type dust removal fan which comprises an air purifying chamber and a dust chamber, wherein the air purifying chamber and the dust chamber are isolated by a filter cartridge; one side of the dust chamber is communicated with a dust hood through an air duct; one side of the air purifying chamber is communicated with the extraction type fan through a pipeline; the filter cartridge comprises a filter cartridge shell, the filter cartridge shell is used for isolating the gas purifying chamber from the dust chamber in an airtight manner, the top end of the filter cartridge shell is provided with upper filter cylinders distributed in an array manner, the lower end of each upper filter cylinder is sleeved with a lower filter cylinder, and one end of each lower filter cylinder, which is far away from the upper filter cylinder, is in a closed shape; the lower filtering cylinder bodies are connected through a lower bracket; the upper filtering cylinder and the lower filtering cylinder filter dust entering the dust chamber, and purified air enters the air purifying chamber from the upper filtering cylinder and the lower filtering cylinder, so that dust in the air is filtered.
Description
Technical Field
The disclosure belongs to the field of dust removal fans, and particularly relates to a dry type dust removal fan.
Background
The performance of a precipitator is expressed in terms of the amount of gas that can be treated, the resistance loss of the gas as it passes through the precipitator, and the efficiency of the precipitation. Meanwhile, the price, the operation and maintenance cost, the service life and the difficulty of operation management of the dust remover are also important factors considering the performance of the dust remover. The dust collector may be classified into a dry dust collector, a semi-dry dust collector, and a wet dust collector according to a dust removal manner.
Disclosure of Invention
The purpose of this disclosure is to provide a dry dust removal fan.
The purpose of the disclosure can be realized by the following technical scheme:
a dry dust removal fan comprises a gas purification chamber and a dust chamber, wherein the gas purification chamber and the dust chamber are isolated by a filter cylinder; one side of the dust chamber is communicated with a dust hood through an air duct; one side of the air purifying chamber is communicated with the extraction type fan through a pipeline; the filter cartridge comprises a filter cartridge shell, the filter cartridge shell is used for isolating the gas purifying chamber from the dust chamber in an airtight manner, the top end of the filter cartridge shell is provided with upper filter cylinders distributed in an array manner, the lower end of each upper filter cylinder is sleeved with a lower filter cylinder, and one end of each lower filter cylinder, which is far away from the upper filter cylinder, is in a closed shape; the lower filtering cylinder bodies are connected through a lower support.
Furthermore, static pressure measuring points are respectively arranged on the inner side and the outer side of the top end of the filter cylinder;
and the dust chamber is provided with a pulse switch.
Further, the interior of the filter cartridge forms a tapered outer wall.
Furthermore, a vertical downward rack is arranged on the filter cylinder shell, a gear support is arranged on the side wall of the lower filter cylinder body close to the rack, a first outer gear in rotary connection is arranged on the gear support through a rotating shaft, and the first outer gear is meshed with the rack;
a first helical gear is arranged on a rotating shaft of the first outer gear, one side of the first helical gear is meshed and connected with a helical gear ring, and the helical gear ring is coaxially and rotatably arranged on the lower filtering cylinder body close to the rack;
the lower filtering cylinder body is rotatably provided with second external gears, adjacent second external gears in the same row are in meshed connection, and any adjacent second external gear in the same column is in motion transmission through a third external gear;
the third external gear is rotatably arranged on the lower bracket through a rotating shaft;
the bevel gear ring is coaxially and fixedly connected with a second external gear positioned in the same lower filtering cylinder body;
the second external gear is fixedly connected with a knocking plate mounting seat, the knocking plate mounting seat is rotatably provided with a knocking plate through a rotating shaft, and a torsional spring is connected between the side wall of the knocking plate and the knocking plate mounting seat.
Furthermore, a driving shaft penetrating through the filter cartridge shell and the air purifying chamber is arranged on the lower support, the driving shaft is connected with a contraction rod of an air cylinder, and the air cylinder is fixedly installed on the air purifying chamber.
Furthermore, a square funnel is communicated with the lower portion of the dust chamber, a weight sensor is hoisted at the square funnel, and when dust in the square funnel reaches a certain weight, the weight sensor sends a signal to enable an electromagnetic valve to be opened, so that the dust is enabled to flow into the dust collection device along a pipeline.
Furthermore, a fan is installed in the dust suction device.
Further, a sprayer interface is installed on the dust suction device.
The beneficial effect of this disclosure:
the upper filtering cylinder and the lower filtering cylinder of the dust filter dust entering the dust chamber, and the purified air enters the air purifying chamber from the upper filtering cylinder and the lower filtering cylinder, so that the dust in the air is filtered.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the internal structure of some embodiments of the present disclosure;
FIG. 3 is a schematic view of a filter cartridge configuration according to some embodiments of the present disclosure;
FIG. 4 is a schematic view of a partial structure of a filter cartridge according to some embodiments of the present disclosure;
FIG. 5 is a schematic view of the disclosure from a different perspective of FIG. 4;
FIG. 6 is an enlarged schematic view at A of FIG. 4 of the present disclosure;
fig. 7 is an enlarged schematic structural diagram at B of fig. 5 of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
As shown in fig. 1 to 2, a dry dust removal fan comprises a gas purification chamber 3 and a dust chamber 7, wherein the gas purification chamber 3 and the dust chamber 7 are isolated by a filter cartridge 16;
one side of the dust chamber 7 is communicated with a dust hood 1 through an air duct 2;
one side of the air purifying chamber 3 is communicated with the extraction type fan 5 through a pipeline.
When the dust collection device is used, the extraction type fan 5 performs air extraction, so that the dust collection cover 1 collects dust, the dust enters the dust chamber 7 from the air duct 2, the filter cartridge 16 filters the dust in the filter cartridge 16, and the purified air enters the air purification chamber 3 from the filter cartridge 16.
In some embodiments, the inner side and the outer side of the top end of the filter cylinder 16 are respectively provided with a static pressure measuring point 15, the dust chamber 7 is provided with a pulse switch 4 by measuring the pressure difference between the inner side and the outer side of the top end of the filter cylinder 16, air flow is generated in the hollow interior of the filter cylinder 16 through the pulse switch 4, so that dust attached to the outer wall of the filter cylinder 16 is blown off, and the square funnel 10 is communicated below the dust chamber 7 and is gathered at the bottom of the square funnel 10; in some implementations, the interior of the filter cartridge 16 is formed with a tapered outer wall to achieve a maximum height range for surface cleaning of the filter cartridge 16.
As shown in fig. 3 to 5, in some embodiments, the filter cartridge 16 includes a filter cartridge housing 160, the filter cartridge housing 160 hermetically isolates the air purifying chamber 3 from the dust chamber 7, the top end of the filter cartridge housing 160 is provided with upper filter cylinders 161 distributed in an array, the lower end of the upper filter cylinders 161 is sleeved with a lower filter cylinder 162, and the end of the lower filter cylinder 162 away from the upper filter cylinder 161 is closed;
the lower filter cartridges 162 are connected to each other by a lower bracket 163.
When the dust filtering device is used, the upper filtering cylinder 161 and the lower filtering cylinder 162 filter dust entering the dust chamber 7, and purified air enters the air purifying chamber 3 from the upper filtering cylinder 161 and the lower filtering cylinder 162, so that dust in the air is filtered; the overall length of the upper filtering cylinder 161 and the lower filtering cylinder 162 is adjustable, and in some scenes, the overall length of the upper filtering cylinder 161 and the lower filtering cylinder 162 is adjusted, so that the overall length of the upper filtering cylinder 161 and the lower filtering cylinder 162 is adapted to the height of the dust chamber 7, and the air purification amount in unit time is improved.
As shown in fig. 6, in some embodiments, the filter cartridge housing 160 is provided with a rack 164 facing vertically downward, a gear bracket is arranged on the side wall of the lower filter cylinder 162 close to the rack 164, a first external gear 165 connected in a rotating manner is arranged on the gear bracket through a rotating shaft, and the first external gear 165 is engaged with the rack 164;
a first helical gear 166 is arranged on a rotating shaft of the first external gear 165, one side of the first helical gear 166 is connected with a helical gear ring 167 in a meshing way, and the helical gear ring 167 is coaxially and rotatably arranged on the lower filtering cylinder 162 close to the rack 164;
the lower filtering cylinder 162 is rotatably provided with second external gears 168, adjacent second external gears 168 in the same row are in meshed connection, and any adjacent second external gear 168 in the same column is in motion transmission through a third external gear 169;
the third external gear 169 is rotatably mounted on the lower bracket 163 through a rotating shaft;
wherein, the helical gear ring 167 is coaxially and fixedly connected with the second external gear 168 of the same lower filtering cylinder 162;
as shown in fig. 7, the second external gear 168 is fixedly connected to the striking plate mounting base 20, the striking plate 21 is rotatably mounted on the striking plate mounting base 20 through a rotating shaft, and a torsion spring 22 is connected between a side wall of the striking plate 21 and the striking plate mounting base 20.
When the filter is used, when the overall length of the lower filter cylinder 162 and the upper filter cylinder 161 changes, the rack 164 drives the first external gear 165 to rotate, the bevel gear ring 167 drives the second external gear 168 to rotate through motion transmission, so that the second external gears 168 in the same row rotate synchronously, and the motion transmission of the third external gear 169 is utilized to realize the synchronous rotation of the second external gears 168 in different rows, namely the second external gears 168 on the lower filter cylinder 162 rotate synchronously; in the process of rotating the second external gear 168, the knocking plate 21 rotates, and the lower filtering cylinder 162 on the peripheral side is knocked by the rotating knocking plate 21, so that dust concentration on the upper filtering cylinder 161 and the lower filtering cylinder 162 is avoided.
In some embodiments, the lower bracket 163 is provided with a driving shaft penetrating the cartridge housing 160 and the air chamber 3, the driving shaft is connected with a contraction rod of the air cylinder 23, and the air cylinder 23 is fixedly installed on the air chamber 3.
In use, the air cylinder 23 drives the lower bracket 163 to move in the vertical direction by using the driving shaft, so as to adjust the overall length of the upper filtering cylinder 161 and the lower filtering cylinder 162.
In some embodiments, the weight sensor 9 is lifted at the square funnel 10, when the dust in the square funnel 10 reaches a certain weight, the weight sensor sends a signal to open the electromagnetic valve 11, so that the dust can flow into the dust suction device 13 along the pipeline, the pneumatic motor and the fan 17 can perform a dust suction function to guide the dust to enter the dust collection place below, prevent the dust from being collected in the pipeline and blocking the pipeline, and simultaneously, the sprayer interface 18 can generate water mist. After the dust is sucked by the pneumatic dust suction device, the dust is wetted after passing through the water curtain to form a dirt flow with the dust, and then the sludge is discharged from the opening at the bottom to the belt conveyer belt under the action of the gravity of the dust.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing illustrates and describes the general principles, principal features, and advantages of the present disclosure. It will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the disclosure, and that various changes and modifications may be made to the disclosure without departing from the spirit and scope of the disclosure, which is intended to be covered by the claims.
Claims (7)
1. A dry dust removal fan comprises a gas purification chamber (3) and a dust chamber (7), wherein the gas purification chamber (3) and the dust chamber (7) are isolated by a filter cylinder (16); one side of the dust chamber (7) is communicated with a dust hood (1) through an air duct (2); one side of the air purifying chamber (3) is communicated with the extraction type fan (5) through a pipeline;
the dust filter is characterized in that the filter cartridge (16) comprises a filter cartridge shell (160), the filter cartridge shell (160) is used for isolating the air-tight space between the air purifying chamber (3) and the dust chamber (7), the top end of the filter cartridge shell (160) is provided with upper filtering cylinder bodies (161) which are distributed in an array manner, the lower end of each upper filtering cylinder body (161) is sleeved with a lower filtering cylinder body (162), and one end of each lower filtering cylinder body (162) which deviates from the upper filtering cylinder body (161) is closed; the lower filtering cylinder bodies (162) are connected through a lower bracket (163);
a vertical downward rack (164) is arranged on the filter cartridge shell (160), a gear support is arranged on the side wall of the lower filter cartridge body (162) close to the rack (164), a first external gear (165) in rotary connection is arranged on the gear support through a rotating shaft, and the first external gear (165) is in meshed connection with the rack (164);
a first helical gear (166) is arranged on a rotating shaft of the first outer gear (165), a helical gear ring (167) is connected to one side of the first helical gear (166) in a meshed mode, and the helical gear ring (167) is coaxially and rotatably mounted on the lower filtering cylinder (162) close to the rack (164);
the lower filtering cylinder body (162) is rotatably provided with second external gears (168), adjacent second external gears (168) in the same row are in meshed connection, and any adjacent second external gear (168) in the same column is in motion transmission through a third external gear (169);
the third external gear (169) is rotatably mounted on the lower bracket (163) through a rotating shaft;
wherein, the bevel gear ring (167) is coaxially and fixedly connected with a second external gear (168) of the same lower filtering cylinder body (162);
fixedly connected strikes board mount pad (20) on second external gear (168), strikes and to rotate through the pivot on board mount pad (20) and install and strike board (21), strikes and is connected with torsional spring (22) between the lateral wall of board (21) and strikes board mount pad (20).
2. The dry dust removal fan as claimed in claim 1, wherein the filter cartridge (16) is provided with static pressure measuring points (15) at the inside and outside of the top end thereof, respectively;
and the dust chamber (7) is provided with a pulse switch (4).
3. The dry precipitator fan of claim 1, wherein the filter cartridge (16) has a tapered outer wall formed therein.
4. The dry type dust exhaust fan according to claim 1, wherein the lower bracket (163) is provided with a driving shaft penetrating the filter cartridge housing (160) and the air purifying chamber (3), the driving shaft is connected with a contraction rod of the air cylinder (23), and the air cylinder (23) is fixedly installed on the air purifying chamber (3).
5. The dry dust removal fan as recited in claim 1, wherein a square funnel (10) is communicated with the lower part of the dust chamber (7), a weight sensor (9) is hoisted at the square funnel (10), and when the dust in the square funnel (10) reaches a certain weight, the weight sensor sends a signal to open the electromagnetic valve (11) so that the dust is conveyed into the dust collection device (13) along the pipeline.
6. A dry extractor fan according to claim 5, characterized in that a fan (17) is mounted in the dust extraction means (13).
7. A dry extractor fan according to claim 6, characterized in that a sprayer attachment (18) is mounted on the dust extraction device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004516.5A CN112206590B (en) | 2020-09-22 | 2020-09-22 | Dry type dust removing fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004516.5A CN112206590B (en) | 2020-09-22 | 2020-09-22 | Dry type dust removing fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112206590A CN112206590A (en) | 2021-01-12 |
| CN112206590B true CN112206590B (en) | 2021-10-22 |
Family
ID=74050106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011004516.5A Active CN112206590B (en) | 2020-09-22 | 2020-09-22 | Dry type dust removing fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112206590B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113648769A (en) * | 2021-08-17 | 2021-11-16 | 叶先华 | Dust fall equipment for building engineering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016191484A1 (en) * | 2015-05-26 | 2016-12-01 | Seitz Michael W | Modular cleaner system for airborne dust |
| CN107823995A (en) * | 2017-12-08 | 2018-03-23 | 安徽理工大学 | A kind of multistage continuous dust arrester of spiral pore type |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6758874B1 (en) * | 2003-05-09 | 2004-07-06 | John P. Hunter, Jr. | Rotating filter feature for wet/dry vacuum cleaner |
| CN201978564U (en) * | 2011-02-11 | 2011-09-21 | 宝山钢铁股份有限公司 | Filter with telescopic filter cartridge for sewage treatment |
| CN103028385B (en) * | 2011-09-28 | 2015-01-07 | 密西西比国际水务有限公司 | Dedusting and cooling method for active coke regeneration equipment and device realizing same |
| CN203494320U (en) * | 2013-08-22 | 2014-03-26 | 安阳市九州净化设备有限公司 | Vertical welder smoke dust removal device |
| CN108187423A (en) * | 2017-12-18 | 2018-06-22 | 厦门三维丝环保股份有限公司 | A kind of easy-to-clean ash cartridge structure |
| US10894238B2 (en) * | 2018-03-29 | 2021-01-19 | Prc-Desoto International, Inc. | Adhesive and sealant mixers with automatic stroke length adjustment |
| CN209005450U (en) * | 2018-10-08 | 2019-06-21 | 德清微晶防水材料有限公司 | A kind of microcrystalline water-proofing agent production dust-extraction unit |
| CN109482000A (en) * | 2019-01-08 | 2019-03-19 | 海盐春鑫机械制造有限公司 | A kind of filter-element dust collector that ash-removal effect is good |
| CN209566009U (en) * | 2019-01-21 | 2019-11-01 | 绍兴闰安电气有限公司 | A kind of cleaner of Caterpillar type shot blasting machine |
| CN110448972A (en) * | 2019-08-04 | 2019-11-15 | 宝鸡文理学院 | A kind of electric automatization cleaner |
-
2020
- 2020-09-22 CN CN202011004516.5A patent/CN112206590B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016191484A1 (en) * | 2015-05-26 | 2016-12-01 | Seitz Michael W | Modular cleaner system for airborne dust |
| CN107823995A (en) * | 2017-12-08 | 2018-03-23 | 安徽理工大学 | A kind of multistage continuous dust arrester of spiral pore type |
Non-Patent Citations (1)
| Title |
|---|
| Filter material treatment methods for fine dust removal and consistent regeneration;S.Yu.Panov;《Chemical and Petroleum Engineering》;20120229;44-49 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112206590A (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109224645A (en) | A kind of air cleaning facility | |
| CN215138301U (en) | Middle-effect air filtering device for dust-free room | |
| CN111829098A (en) | Self-cleaning formula air purifier | |
| CN112206590B (en) | Dry type dust removing fan | |
| CN116603325A (en) | Cloth bag dust remover with automatic cleaning function | |
| CN220187049U (en) | Indoor purifier with self-cleaning function | |
| CN112588063A (en) | Dust removal device for chemical workshop | |
| CN217312389U (en) | Industrial atmosphere pollution bag dust remover with high dust removal efficiency | |
| CN214487405U (en) | High-efficiency high-flow cyclone dust collector | |
| CN214106184U (en) | Pulse dust collector for feed production | |
| CN116328433A (en) | Bag type dust collector for purifying industrial kiln gas | |
| CN210874483U (en) | Manual deashing sack cleaner | |
| CN211801660U (en) | High-voltage electrostatic dust and smoke removing equipment | |
| CN212140326U (en) | Novel dust remover | |
| CN209254359U (en) | A kind of air cleaning facility | |
| CN216223370U (en) | Metal dust purification and recovery device | |
| CN113521898B (en) | Metallurgical waste gas bag-type dust collector | |
| CN218796526U (en) | Initiative dust type car air filter | |
| CN213132333U (en) | Pneumatic cyclone bag type dust collector | |
| CN220834705U (en) | Antiviral air conditioner filter convenient to dismantle | |
| CN219154016U (en) | Dust removing cover of printing machine | |
| CN216653949U (en) | Dust removal device for electric melting furnace workshop | |
| CN220479386U (en) | Screening device convenient for layered collection | |
| CN220758390U (en) | Novel pulse cloth bag dust collector | |
| CN219441023U (en) | Pulse dust collector adopting bottom grid structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |