CN221131521U - Chemical waste gas spray tower - Google Patents
Chemical waste gas spray tower Download PDFInfo
- Publication number
- CN221131521U CN221131521U CN202322726623.4U CN202322726623U CN221131521U CN 221131521 U CN221131521 U CN 221131521U CN 202322726623 U CN202322726623 U CN 202322726623U CN 221131521 U CN221131521 U CN 221131521U
- Authority
- CN
- China
- Prior art keywords
- waste gas
- tower body
- fixedly connected
- chemical waste
- tower
- 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
- 239000007921 spray Substances 0.000 title claims abstract description 45
- 239000002894 chemical waste Substances 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims 2
- 239000002912 waste gas Substances 0.000 abstract description 23
- 239000000945 filler Substances 0.000 abstract description 20
- 238000000746 purification Methods 0.000 abstract description 13
- 238000003756 stirring Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model provides a chemical waste gas spray tower, which relates to the technical field of chemical waste gas treatment and comprises the following components: the tower body is fixedly arranged on the upper surface of the bottom plate, and an air inlet pipe is arranged on the outer surface of the tower body close to the lower surface; the spraying assembly is fixedly connected to the upper surface of the bottom plate and comprises a water supply device; the number of the material turning assemblies is two. According to the utility model, the motor is periodically started in the waste gas purification process, the motor is started to drive the stirring block to rotate, the stirring block rotates in the material containing tray, and the stacked filler can be uniformly stirred up and down by the stirring block in an inclined plane state, so that the blocking phenomenon caused by the adsorption of impurities by the filler at the bottom can be avoided, and the problems that the channel in the filler is blocked, the flow of waste gas and spray liquid is blocked, and the contact and mixing of the waste gas are influenced in the background technology are solved, so that the purification effect is reduced.
Description
Technical Field
The utility model relates to the technical field of chemical waste gas treatment, in particular to a chemical waste gas spray tower.
Background
The chemical waste gas spray tower is one common waste gas treating equipment for eliminating pollutant from waste gas, and through the contact between waste gas and spray liquid, the pollutant from waste gas is transferred to liquid phase for purifying waste gas.
Among the prior art, chemical waste gas spray column carries out purification treatment through the inside shower cooperation filler of spray column to chemical waste gas when using, owing to pack and be in piling up the state of standing in the spray column, when carrying out exhaust purification, the impurity in the filler adsorption waste gas that is in the bottom produces the jam, and the jam can lead to the inside passageway of filler to be stopped up, and the flow of waste gas and spray liquid is blocked, influences the contact and the mixing of waste gas to reduce purifying effect.
Disclosure of utility model
The utility model aims to solve the problems that when a chemical waste gas spray tower is used, chemical waste gas is purified through a spray pipe in the spray tower and a filler, the filler is in a stacked and standing state in the spray tower, and when waste gas is purified, the filler at the bottom adsorbs impurities in waste gas to generate blockage, so that a channel in the filler is blocked, the flow of waste gas and spray liquid is blocked, and the contact and mixing of waste gas are affected, so that the purification effect is reduced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: a chemical waste gas spray tower comprising: the tower body is fixedly arranged on the upper surface of the bottom plate, and an air inlet pipe is arranged on the outer surface of the tower body close to the lower surface; the spraying assembly is fixedly connected to the upper surface of the bottom plate and comprises a water supply device; the number of the material turning assemblies is two, the two material turning assemblies are fixedly connected with the tower body, and each material turning assembly comprises a bracket and a plurality of supporting rods; observe the subassembly, observe the subassembly quantity and set up to two, two observe the equal fixed connection of subassembly at tower body external surface, observe the subassembly and include the viewing aperture.
Preferably, a recovery pipe is arranged on the outer surface of the left side of the water supply device, and the recovery pipe is communicated with the tower body.
Preferably, the upper surface of the water supply device is provided with two groups of spray pipes, and the two groups of spray pipes are all positioned in the tower body.
Preferably, the bracket is fixedly connected to the inner surface of the tower body, the upper surface of the bracket is fixedly connected with a material containing disc, a plurality of support rods are fixedly connected to the outer surface of the tower body, and a mounting plate is fixedly connected between the end faces of the support rods.
Preferably, the mounting panel surface fixedly connected with motor, motor output and mounting panel slip run through, motor output fixedly connected with pivot, pivot and tower body slip run through and extend to the inboard, pivot terminal surface fixedly connected with first bevel gear.
Preferably, the outer surface of the first bevel gear is meshed with a second bevel gear, the lower surface of the second bevel gear is fixedly connected with an output shaft, the outer surface of the output shaft is rotationally connected with a support, the outer surface of the support is fixedly connected with the inner surface of the tower body, the lower end surface of the output shaft is fixedly connected with a rotating seat, the lower surface of the rotating seat is fixedly connected with a plurality of connecting rods at equal intervals, and the lower end surfaces of the connecting rods are fixedly connected with turning blocks.
Preferably, the observation port is communicated with the tower body, two flanges are arranged on the end face of the observation port, clamping grooves are formed in the outer surfaces of one adjacent sides of the two flanges, and a glass plate is arranged between the two clamping grooves.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. According to the utility model, the motor is periodically started in the waste gas purification process, the motor is started to drive the stirring block to rotate, the stirring block rotates in the material containing tray, and the stacked filler can be uniformly stirred up and down by the stirring block in an inclined plane state, so that the blocking phenomenon caused by the adsorption of impurities by the filler at the bottom can be avoided, and the problems that the channel in the filler is blocked, the flow of waste gas and spray liquid is blocked, and the contact and mixing of the waste gas are influenced in the background technology are solved, so that the purification effect is reduced.
2. According to the utility model, the glass plates are arranged in a matched manner through the two flange plates, so that the operation condition of the tower body can be observed in the operation process of the spray tower conveniently, and the practicability of the device is improved.
Drawings
Fig. 1 is a perspective view of a chemical waste gas spray tower according to the present utility model;
FIG. 2 is a cross-sectional view of a tower body structure of a chemical waste gas spray tower according to the present utility model;
FIG. 3 is a schematic diagram showing the structure of a spray assembly of a chemical waste gas spray tower according to the present utility model;
Fig. 4 is a schematic diagram of a material turning assembly of the chemical waste gas spray tower according to the present utility model;
Fig. 5 is a schematic structural diagram of an observation assembly of a chemical waste gas spray tower according to the present utility model.
Legend description: 1. a bottom plate; 2. a tower body; 3. an air inlet pipe; 4. a spray assembly; 401. a water supply device; 402. a recovery pipe; 403. a shower pipe; 5. a material turning component; 501. a bracket; 502. a material containing disc; 503. a support rod; 504. a mounting plate; 505. a motor; 506. a rotating shaft; 507. a first bevel gear; 508. a second bevel gear; 509. an output shaft; 510. a bracket; 511. a rotating seat; 512. a connecting rod; 513. turning over the stirring block; 6. an observation assembly; 601. an observation port; 602. a flange plate; 603. a clamping groove; 604. a glass plate.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Embodiment 1 as shown in fig. 1 to 5, the present utility model provides a chemical waste gas spray tower, comprising: the tower body 2 is fixedly arranged on the upper surface of the bottom plate 1, and an air inlet pipe 3 is arranged at a position, close to the lower surface, of the outer surface of the tower body 2; the spraying assembly 4 is fixedly connected to the upper surface of the bottom plate 1, and the spraying assembly 4 comprises a water supply device 401; the number of the material turning assemblies 5 is two, the two material turning assemblies 5 are fixedly connected with the tower body 2, and the material turning assemblies 5 comprise brackets 501 and a plurality of supporting rods 503; the observation assembly 6, the quantity of the observation assembly 6 is set to two, the equal fixed connection of two observation assemblies 6 is at tower body 2 surface, observation assembly 6 includes viewing aperture 601, water supply device 401 left side surface is provided with recovery pipe 402, recovery pipe 402 is the intercommunication setting with tower body 2, water supply device 401 upper surface is provided with two sets of spray pipes 403, two sets of spray pipes 403 are all located tower body 2 inside, bracket 501 fixed connection is at tower body 2 internal surface, bracket 501 upper surface fixed connection holds charging tray 502, a plurality of bracing pieces 503 all fixed connection is at tower body 2 surface, fixed connection has mounting panel 504 between a plurality of bracing piece 503 terminal surfaces, mounting panel 504 surface fixed connection has motor 505, motor 505 output runs through with mounting panel 504 slip, motor 505 output fixedly connected with pivot 506, pivot 506 runs through and extends to the inboard with tower body 2 slip, pivot 506 terminal surface fixed connection has first bevel gear 507, first bevel gear 507 surface engagement has second bevel gear 508, surface fixed connection has output shaft 509 under the second bevel gear 508, 509 surface rotation connection has support 510, support 510 surface and tower body 2 output shaft surface fixed connection has terminal surface mounting plate 512, a plurality of connecting rods are connected with lower surface fixed connection 512 under the fixed connection has a plurality of connecting rods 512 under the surface fixed connection.
The effect that its whole embodiment 1 reaches is, when the spray column operation, connect chemical industry equipment with waste gas through intake pipe 3 and discharge into tower body 2 inside, place the filler in flourishing charging tray 502, when carrying out waste gas purification, start from shower 403 position through water supply device 401 and spray flourishing charging tray 502, the use of cooperation filler is accomplished to the purification of chemical industry waste gas through spraying of shower 403, at the periodic start motor 505 of exhaust purification in-process, motor 505 starts can drive pivot 506 and rotate, through the meshing of first bevel gear 507 and second bevel gear 508, pivot 506 can drive output shaft 509 and rotate, can play the supporting role to output shaft 509's rotation through the setting of support 510, output shaft 509 can drive through the connection of rotating seat 511 and connecting rod 512 and turn over and mix the piece 513 and rotate, turn over and mix the piece 513 through turning over and mix the piece 513 in flourishing charging tray 502 internal rotation, the inclined plane state can be with the packing up-down turn over and mix evenly, thereby can avoid the bottom filler to adsorb impurity and lead to the emergence of blocking phenomenon.
In embodiment 2, as shown in fig. 1-5, an observation port 601 is communicated with a tower body 2, two flanges 602 are arranged on the end face of the observation port 601, clamping grooves 603 are formed in the outer surfaces of adjacent sides of the two flanges 602, and a glass plate 604 is arranged between the two clamping grooves 603.
The effect that its whole embodiment 2 reached is, can conveniently maintain the clearance to tower body 2 inside through viewing aperture 601 position, when carrying out sealed installation to viewing aperture 601, cooperates the setting of installation glass board 604 through two ring flanges 602, and the inside running condition of tower body 2 can conveniently be observed in the spray column operation in-process to the use of glass board 604, has promoted the practicality of device.
Working principle: when the spray tower operates, connect chemical industry equipment through intake pipe 3 and arrange waste gas into tower body 2 inside, place the filler in flourishing charging tray 502, when carrying out exhaust purification, start and spray flourishing charging tray 502 from shower 403 position through water supply device 401, the use of cooperation filler of spraying through shower 403 is accomplished to purification of chemical industry waste gas, regularly start motor 505 in the exhaust purification process, motor 505 starts and can drive pivot 506 and rotate, through the meshing of first bevel gear 507 and second bevel gear 508, pivot 506 can drive output shaft 509 and rotate, can play the supporting role to the rotation of output shaft 509 through the setting of support 510, output shaft 509 can drive through the connection of rolling seat 511 and connecting rod 512 and turn over and mix the piece 513 rotation, turn over and mix the piece 513 through turning over and mix in flourishing charging tray 502 internal rotation, bevel state turn over and mix evenly about the filler, thereby can avoid the bottom filler to adsorb the emergence of impurity and lead to the jam phenomenon, can conveniently clear up tower body 2 inside through viewing port 601 position, when carrying out sealed installation to viewing port 601, can drive output shaft 509 through the meshing of two flange plates 602, the setting up the glass plate 604, the practicality of the inner tower 2 has been improved in the operation process.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model will still fall within the protection scope of the technical solution of the present utility model.
Claims (7)
1. A chemical waste gas spray tower, comprising: the tower comprises a bottom plate (1), wherein a tower body (2) is fixedly arranged on the upper surface of the bottom plate (1), and an air inlet pipe (3) is arranged at the position, close to the lower surface, of the outer surface of the tower body (2);
The spraying assembly (4), the spraying assembly (4) is fixedly connected to the upper surface of the bottom plate (1), and the spraying assembly (4) comprises a water supply device (401);
The material turning assemblies (5), the number of the material turning assemblies (5) is two, the two material turning assemblies (5) are fixedly connected with the tower body (2), and the material turning assemblies (5) comprise brackets (501) and a plurality of supporting rods (503);
The observation assembly (6), observation assembly (6) quantity is established to two, two observation assembly (6) all fixed connection is at tower body (2) surface, observation assembly (6) are including viewing aperture (601).
2. The chemical waste gas spray tower according to claim 1, wherein: the water supply device (401) left side surface is provided with recovery pipe (402), recovery pipe (402) are the intercommunication setting with tower body (2).
3. The chemical waste gas spray tower according to claim 1, wherein: two groups of spray pipes (403) are arranged on the upper surface of the water supply device (401), and the two groups of spray pipes (403) are located in the tower body (2).
4. The chemical waste gas spray tower according to claim 1, wherein: bracket (501) fixed connection is at tower body (2) internal surface, bracket (501) upper surface fixed connection holds charging tray (502), and a plurality of bracing piece (503) are all fixed connection at tower body (2) external surface, a plurality of fixedly connected with mounting panel (504) between bracing piece (503) terminal surface.
5. The chemical waste gas spray tower according to claim 4, wherein: the motor is fixedly connected with the outer surface of the mounting plate (504), the output end of the motor (505) is in sliding penetration with the mounting plate (504), the output end of the motor (505) is fixedly connected with a rotating shaft (506), the rotating shaft (506) is in sliding penetration with the tower body (2) and extends to the inner side, and a first bevel gear (507) is fixedly connected with the end face of the rotating shaft (506).
6. The chemical waste gas spray tower according to claim 5, wherein: the utility model discloses a bevel gear, including first bevel gear (507), output shaft (509) and connecting rod (512), first bevel gear (507) surface engagement has second bevel gear (508), fixed surface is connected with output shaft (509) under second bevel gear (508), output shaft (509) surface rotation is connected with support (510), support (510) surface and tower body (2) internal surface fixed connection, terminal surface fixedly connected with rotates seat (511) under output shaft (509), a plurality of connecting rods (512) of surface equidistance fixedly connected with under rotation seat (511), a plurality of terminal surface all fixedly connected with turns over mix piece (513) under connecting rod (512).
7. The chemical waste gas spray tower according to claim 1, wherein: the observation port (601) is communicated with the tower body (2), two flange plates (602) are arranged on the end face of the observation port (601), clamping grooves (603) are formed in the outer surfaces of the adjacent sides of the flange plates (602), and glass plates (604) are arranged between the clamping grooves (603).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322726623.4U CN221131521U (en) | 2023-10-11 | 2023-10-11 | Chemical waste gas spray tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322726623.4U CN221131521U (en) | 2023-10-11 | 2023-10-11 | Chemical waste gas spray tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221131521U true CN221131521U (en) | 2024-06-14 |
Family
ID=91415823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322726623.4U Active CN221131521U (en) | 2023-10-11 | 2023-10-11 | Chemical waste gas spray tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221131521U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118384678A (en) * | 2024-07-01 | 2024-07-26 | 厦门翔昀实验室设备有限公司 | Intelligent laboratory organic waste gas treatment device with remote monitoring function |
| CN118949669A (en) * | 2024-10-17 | 2024-11-15 | 合肥上华工程设计有限公司 | An adsorption purification equipment for tail gas treatment in chemical workshops |
| CN119075651A (en) * | 2024-08-29 | 2024-12-06 | 南京双睿环保科技有限公司 | Energy-saving and environmentally friendly chemical waste gas treatment method |
| CN119075648A (en) * | 2024-11-01 | 2024-12-06 | 湖南省南铂新材料有限公司 | A spray purification device for manufacturing non-ferrous metal alloys |
| CN119258732A (en) * | 2024-11-01 | 2025-01-07 | 广东容大生物股份有限公司 | A kind of packing spray tower for waste gas treatment |
| CN119281039A (en) * | 2024-10-21 | 2025-01-10 | 东华工程科技股份有限公司 | A three-stage condensation system for VOC tail gas in tank areas containing alcohol chemicals |
| CN119588150A (en) * | 2024-12-25 | 2025-03-11 | 东营曜康医药科技有限公司 | A spray tower for the production of 4-methyl-5-hydroxyethylthiazole |
| CN120242707A (en) * | 2025-04-10 | 2025-07-04 | 石家庄市云海化工科技有限公司 | A spray washing device for purifying chemical waste gas |
-
2023
- 2023-10-11 CN CN202322726623.4U patent/CN221131521U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118384678A (en) * | 2024-07-01 | 2024-07-26 | 厦门翔昀实验室设备有限公司 | Intelligent laboratory organic waste gas treatment device with remote monitoring function |
| CN118384678B (en) * | 2024-07-01 | 2024-09-17 | 厦门翔昀实验室设备有限公司 | Intelligent laboratory organic waste gas treatment device with remote monitoring function |
| CN119075651A (en) * | 2024-08-29 | 2024-12-06 | 南京双睿环保科技有限公司 | Energy-saving and environmentally friendly chemical waste gas treatment method |
| CN118949669A (en) * | 2024-10-17 | 2024-11-15 | 合肥上华工程设计有限公司 | An adsorption purification equipment for tail gas treatment in chemical workshops |
| CN119281039A (en) * | 2024-10-21 | 2025-01-10 | 东华工程科技股份有限公司 | A three-stage condensation system for VOC tail gas in tank areas containing alcohol chemicals |
| CN119258732A (en) * | 2024-11-01 | 2025-01-07 | 广东容大生物股份有限公司 | A kind of packing spray tower for waste gas treatment |
| CN119075648A (en) * | 2024-11-01 | 2024-12-06 | 湖南省南铂新材料有限公司 | A spray purification device for manufacturing non-ferrous metal alloys |
| CN119075648B (en) * | 2024-11-01 | 2025-03-18 | 湖南省南铂新材料有限公司 | A spray purification device for manufacturing non-ferrous metal alloys |
| CN119258732B (en) * | 2024-11-01 | 2025-10-28 | 广东容大生物股份有限公司 | A packed spray tower for waste gas treatment |
| CN119588150A (en) * | 2024-12-25 | 2025-03-11 | 东营曜康医药科技有限公司 | A spray tower for the production of 4-methyl-5-hydroxyethylthiazole |
| CN119588150B (en) * | 2024-12-25 | 2025-06-13 | 东营曜康医药科技有限公司 | A spray tower for the production of 4-methyl-5-hydroxyethylthiazole |
| CN120242707A (en) * | 2025-04-10 | 2025-07-04 | 石家庄市云海化工科技有限公司 | A spray washing device for purifying chemical waste gas |
| CN120242707B (en) * | 2025-04-10 | 2025-11-21 | 石家庄市云海化工科技有限公司 | Spraying and washing device for purifying chemical waste gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN221131521U (en) | Chemical waste gas spray tower | |
| CN106986484A (en) | A kind of floatation type water quality improver | |
| CN212119571U (en) | Automatic integrated equipment of denitration desulfurization | |
| CN108046561B (en) | Scale-proof stable and efficient sludge dewatering machine | |
| CN206222348U (en) | A kind of boiler flue gas desulfurization device | |
| CN219745133U (en) | Spray tower capable of improving spray area | |
| CN222694372U (en) | Elution tower for tail gas treatment | |
| CN216063925U (en) | Furniture production is with quick-drying environment-friendly baking finish room | |
| CN119660849B (en) | Ecological gate dam device and method for self-purifying water quality | |
| CN222752957U (en) | A high-efficiency spray tower for waste gas desulfurization | |
| CN222286913U (en) | Energy-saving flue gas desulfurization tower | |
| CN210915493U (en) | High-efficient water pollution administers device | |
| CN219023878U (en) | VOCs exhaust-gas treatment clarification plant | |
| CN223381388U (en) | Washing tower with multiple washing functions | |
| CN218166492U (en) | Waste gas purification equipment for sewage treatment station | |
| CN221217411U (en) | Neutralization reaction system capable of reducing production wastewater | |
| CN220618615U (en) | Perchlorate catalytic reduction permeation device | |
| CN223096522U (en) | Chemical waste gas purifying tower | |
| CN222855076U (en) | Flue gas absorption anti-corrosion tower that facilitates gas-liquid fusion | |
| CN220918708U (en) | Exhaust gas desulfurization structure that purifying effect is good | |
| CN222709373U (en) | A chemical waste gas purification tower | |
| CN218573273U (en) | Composite chemical absorption organic waste gas treatment device | |
| CN213060530U (en) | High-concentration treatment tower of sewage treatment equipment | |
| CN213132649U (en) | High temperature flue gas environmental protection processing apparatus | |
| CN222368745U (en) | Waste gas nitrogen oxide compound treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |