CN114688323A - Explosion-proof breather valve for oil tank - Google Patents
Explosion-proof breather valve for oil tank Download PDFInfo
- Publication number
- CN114688323A CN114688323A CN202110315702.9A CN202110315702A CN114688323A CN 114688323 A CN114688323 A CN 114688323A CN 202110315702 A CN202110315702 A CN 202110315702A CN 114688323 A CN114688323 A CN 114688323A
- Authority
- CN
- China
- Prior art keywords
- partition plate
- negative pressure
- explosion
- baffle
- fixed mounting
- 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.)
- Granted
Links
- 238000005192 partition Methods 0.000 claims abstract description 56
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/196—Equalising valves predominantly for tanks spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an explosion-proof breather valve for an oil tank, which comprises a shell, wherein a first connecting pipe is fixedly arranged on the side of the shell, a second connecting pipe is fixedly arranged on the lower end surface of the shell, and a first partition plate and a second partition plate are fixedly arranged in the shell. This explosion-proof breather valve for oil tank, be provided with baffle one, baffle two, separate negative pressure chamber and malleation chamber, during negative pressure disk seat rebound, the connecting hole one and the second switch-on of connecting hole of top, gas in the negative pressure chamber need enter into the positive pressure chamber through the connecting hole, when exploding, can effectively reduce stretching of intensity of a fire, be provided with fire prevention net one between baffle one and the baffle two, the below of baffle two is provided with fire prevention net two, when exploding, flame at first contacts with fire prevention net one, enter into the upper end of baffle one after that, the lower extreme of baffle two is entered into to the rethread connecting hole, in-process intensity of a fire greatly reduced, fire prevention performance to flame is carried out the separation again to fire prevention net two at last, the breather valve's explosion-proof performance has been improved greatly.
Description
Technical Field
The invention relates to the technical field of breather valves, in particular to an explosion-proof breather valve for an oil tank.
Background
The breather valve is a valve which can ensure that the space of the storage tank is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere when the pressure exceeds or is lower than the pressure range, and the breather valve has the functions of preventing the storage tank from being damaged due to overpressure or vacuum and reducing the evaporation loss of the stored liquid.
Most breather valves are inside comparatively single at present, and the negative pressure chamber links together with the malleation chamber, does not possess the buffer zone, and when exploding, flame directly enters into the malleation chamber through the negative pressure chamber, can't reduce stretching of intensity of a fire.
Disclosure of Invention
The invention aims to provide an explosion-proof breather valve for an oil tank, which aims to solve the problems that most breather valves in the background technology have a single internal structure, a negative pressure cavity is connected with a positive pressure cavity, and the breather valve does not have a buffer area, and flame directly enters the positive pressure cavity through the negative pressure cavity when explosion occurs, so that the spread of fire can not be reduced.
In order to achieve the purpose, the invention provides the following technical scheme: an explosion-proof breather valve for an oil tank comprises a shell, wherein a first connecting pipe is fixedly arranged at the side of the shell, a second connecting pipe is fixedly arranged at the lower end face of the shell, a first baffle plate and a second baffle plate are fixedly arranged in the shell, a first fireproof net is fixedly arranged at the inner side of the first connecting pipe, a fixed sleeve is fixedly arranged at the upper end inside the shell, a movable sleeve is sleeved and arranged at the outer side of the fixed sleeve, a negative pressure valve disc is fixedly arranged at the lower end face of the movable sleeve, a negative pressure valve seat is fixedly arranged at the lower end face of the negative pressure valve disc, a fixed rod is fixedly arranged at the upper end face of the first baffle plate, a limit block is fixedly arranged at the upper end face of the fixed rod, a first spring is sleeved and arranged at the outer side of the fixed rod, a valve rod is movably arranged in the fixed sleeve, a positive pressure valve seat is fixedly arranged at the lower end face of the valve rod, a second spring is sleeved and arranged at the outer side of the valve rod, through-hole one has been seted up to movable sleeve's avris, through-hole two has been seted up to fixed sleeve's avris, the connecting hole has been seted up to the inside of valve rod, malleation disk seat, the inside fixed mounting of casing has fire prevention net two.
Preferably, the first partition plate is located above the second partition plate, the lower end face of the negative pressure valve disc is attached to the upper end face of the first partition plate, and the negative pressure valve seat is connected to the inside of the first partition plate in a clamping mode.
Preferably, the number of the fixing rods is four on the upper end face of the first partition plate in an annular mode, the fixing rods are installed inside the negative pressure valve disc in a sleeved mode, and the first spring is located between the negative pressure valve disc and the limiting block.
Preferably, the valve rod is tightly attached to the inner side of the fixing sleeve, the positive pressure valve seat is clamped and connected to the inner portion of the second partition plate, and the upper end face of the second spring is attached to the lower end face of the fixing sleeve.
Preferably, the first through holes are symmetrically formed in the side of the movable sleeve, the second through holes are located right above the first through holes, and the second through holes correspond to the first through holes one to one.
Preferably, the first fireproof net is located between the first partition plate and the second partition plate, and the second fireproof net is located below the second partition plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the explosion-proof breather valve for the oil tank is provided with a first partition plate and a second partition plate, wherein the first partition plate and the second partition plate separate a negative pressure cavity from a positive pressure cavity, when a negative pressure valve seat moves upwards, a first connecting hole above the negative pressure valve seat is communicated with a second connecting hole, and gas in the negative pressure cavity needs to enter the positive pressure cavity through the connecting holes, so that the spread of fire can be effectively reduced when explosion occurs;
2. this explosion-proof breather valve for oil tank is provided with fire prevention net one between baffle one and the baffle two, and the below of baffle two is provided with fire prevention net two, and when exploding, flame at first contacts with fire prevention net one, enters into the upper end of baffle one after that, and the lower extreme of baffle two is entered into to the rethread connecting hole, and in-process intensity of a fire greatly reduced, and fire prevention performance of breather valve has been improved greatly to the separation of flame again at last fire prevention net two.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the movable sleeve of the present invention;
FIG. 4 is a schematic structural diagram of the present invention at A.
In the figure: 1. a housing; 2. a first connecting pipe; 3. a second connecting pipe; 4. a first clapboard; 5. a second clapboard; 6. a first fireproof net; 7. fixing the sleeve; 8. a movable sleeve; 9. a negative pressure valve disc; 10. a negative pressure valve seat; 11. fixing the rod; 12. a limiting block; 13. a first spring; 14. a valve stem; 15. a positive pressure valve seat; 16. a second spring; 17. a first through hole; 18. a second through hole; 19. connecting holes; 20. and a second fireproof net.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: an explosion-proof breather valve for an oil tank comprises a shell 1, a first connecting pipe 2, a second connecting pipe 3, a first partition plate 4, a second partition plate 5, a first fireproof net 6, a fixed sleeve 7, a movable sleeve 8, a negative pressure valve disc 9, a negative pressure valve seat 10, a fixed rod 11, a limiting block 12, a first spring 13, a valve rod 14, a positive pressure valve seat 15, a second spring 16, a first through hole 17, a second through hole 18, a connecting hole 19 and a second fireproof net 20, wherein the first connecting pipe 2 is fixedly installed at the edge side of the shell 1, the second connecting pipe 3 is fixedly installed at the lower end face of the shell 1, the first partition plate 4 and the second partition plate 5 are fixedly installed inside the shell 1, the first fireproof net 6 is fixedly installed at the inner side of the first connecting pipe 2, the fixed sleeve 7 is fixedly installed at the upper end inside the shell 1, the movable sleeve 8 is installed on the outer side of the valve disc in a sleeved mode, the negative pressure 9 is fixedly installed at the lower end face of the movable sleeve 8, the negative pressure valve seat 10 is fixedly installed at the lower end face of the negative pressure valve 9, the up end fixed mounting of baffle 4 has dead lever 11, the up end fixed mounting of dead lever 11 has stopper 12, the outside of dead lever 11 is cup jointed and is installed spring 13, the inside movable mounting of fixed sleeve 7 has valve rod 14, the lower terminal surface fixed mounting of valve rod 14 has malleation disk seat 15, the outside of valve rod 14 is cup jointed and is installed spring two 16, through-hole 17 has been seted up to movable sleeve 8's avris, through-hole two 18 has been seted up to fixed sleeve 7's avris, valve rod 14, connecting hole 19 has been seted up to malleation disk seat 15's inside, the inside fixed mounting of casing 1 has fire prevention net two 20.
Furthermore, the first partition plate 4 is located above the second partition plate 5, the lower end face of the negative pressure valve disc 9 is attached to the upper end face of the first partition plate 4, the negative pressure valve seat 10 is connected to the inside of the first partition plate 4 in a clamping mode, when the air pressure between the first partition plate 4 and the second partition plate 5 is larger than the air pressure at the upper end of the first partition plate 4, the negative pressure valve seat 10 jacks upwards, and air enters the upper end of the first partition plate 4.
Furthermore, the fixing rods 11 are annularly arranged on the upper end face of the first partition plate 4, the fixing rods 11 are sleeved inside the negative pressure valve disc 9, the first spring 13 is located between the negative pressure valve disc 9 and the limiting block 12, and the first spring 13 exerts downward thrust on the negative pressure valve disc 9 through the limiting block 12 and plays a role in resetting the negative pressure valve disc 9.
Further, valve rod 14 closely laminates with the inboard of fixed sleeve 7, the inside at two 5 of baffle is connected to malleation disk seat 15 block, the up end of two 16 springs and the laminating of the lower terminal surface of fixed sleeve 7, malleation disk seat 15 reciprocates along the inboard of fixed sleeve 7 through valve rod 14, atmospheric pressure when two 5 lower extremes of baffle is greater than baffle one 4, during atmospheric pressure between the two 5 baffles, malleation disk seat 15 jack-up upwards, gas enters into baffle one 4, between two 5 baffles, two 16 springs exert decurrent thrust to malleation disk seat 15, play the reset action to malleation disk seat 15.
Furthermore, the first through holes 17 are symmetrically formed in the side of the movable sleeve 8, the second through holes 18 are located right above the first through holes 17, the second through holes 18 correspond to the first through holes 17 one by one, the negative pressure valve disc 9 drives the movable sleeve 8 to move upwards to enable the first through holes 17 to be flush with the second through holes 18, and gas at the upper end of the first partition plate 4 enters the inside of the fixed sleeve 7 and then enters the lower end of the second partition plate 5 through the connecting holes 19.
Further, the first fireproof net 6 is located between the first partition plate 4 and the second partition plate 5, the second fireproof net 20 is located below the second partition plate 5, and the first fireproof net 6 and the second fireproof net 20 prevent flame generated by explosion from entering the interior of the shell 1.
The working principle is as follows: firstly, connecting the first connecting pipe 2 and the second connecting pipe 3 with an external pipeline, when the air pressure between the first partition plate 4 and the second partition plate 5 is greater than the air pressure at the upper end of the first partition plate 4, the negative pressure valve seat 10 is lifted upwards, the air enters the upper end of the first partition plate 4, the negative pressure valve seat 10 drives the movable sleeve 8 to move upwards through the negative pressure valve disc 9 so that the first through hole 17 is flush with the second through hole 18, the air at the upper end of the first partition plate 4 enters the fixed sleeve 7 and then enters the lower end of the second partition plate 5 through the connecting hole 19, the first spring 13 applies downward thrust to the negative pressure valve disc 9 through the limiting block 12 to reset the negative pressure valve disc 9, when the air pressure at the lower end of the second partition plate 5 is greater than the air pressure between the first partition plate 4 and the second partition plate 5, the positive pressure valve seat 15 is lifted upwards, the air enters between the first partition plate 4 and the second partition plate 5, and the second spring 16 applies downward thrust to the positive pressure valve seat 15, the positive pressure valve seat 15 is reset, when explosion happens, flame firstly contacts with the first fireproof net 6, then enters the upper end of the first partition plate 4, and then enters the lower end of the second partition plate 5 through the connecting hole 19, the fire intensity is greatly reduced in the process, and finally the second fireproof net 20 at the lower end of the second partition plate 5 blocks the flame, so that the explosion-proof performance of the breather valve is greatly improved.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. An explosion-proof breather valve for oil tank, includes casing (1), its characterized in that: the utility model discloses a valve, including casing (1), avris fixed mounting of casing (1) has connecting pipe (2), the lower terminal surface fixed mounting of casing (1) has connecting pipe two (3), the inside fixed mounting of casing (1) has baffle one (4), baffle two (5), the inboard fixed mounting of connecting pipe one (2) has fire prevention net one (6), the inside upper end fixed mounting of casing (1) has fixed sleeve (7), the outside of fixed sleeve (7) is cup jointed and is installed movable sleeve (8), the lower terminal surface fixed mounting of movable sleeve (8) has negative pressure (9), the lower terminal surface fixed mounting of negative pressure (9) has negative pressure disk seat (10), the up end fixed mounting of baffle one (4) has dead lever (11), the up end fixed mounting of dead lever (11) has stopper (12), the outside of dead lever (11) is cup jointed and is installed spring one (13), the inside movable mounting of fixed sleeve (7) has valve rod (14), the lower terminal surface fixed mounting of valve rod (14) has malleation disk seat (15), the outside of valve rod (14) is cup jointed and is installed spring two (16), through-hole one (17) have been seted up to the avris of movable sleeve (8), through-hole two (18) have been seted up to the avris of fixed sleeve (7), connecting hole (19) have been seted up to the inside of valve rod (14), malleation disk seat (15), the inside fixed mounting of casing (1) has fire prevention net two (20).
2. The explosion-proof breather valve for the oil tank of claim 1, wherein: the first partition plate (4) is located above the second partition plate (5), the lower end face of the negative pressure valve disc (9) is attached to the upper end face of the first partition plate (4), and the negative pressure valve seat (10) is connected to the inside of the first partition plate (4) in a clamping mode.
3. The explosion-proof breather valve for the oil tank of claim 1, wherein: the fixing rods (11) are arranged on the upper end face of the first partition plate (4) in an annular mode, the fixing rods (11) are installed inside the negative pressure valve disc (9) in a sleeved mode, and the first spring (13) is located between the negative pressure valve disc (9) and the limiting block (12).
4. The explosion-proof breather valve for the oil tank of claim 1, wherein: the valve rod (14) is tightly attached to the inner side of the fixed sleeve (7), the positive pressure valve seat (15) is clamped and connected inside the second partition plate (5), and the upper end face of the second spring (16) is attached to the lower end face of the fixed sleeve (7).
5. The explosion-proof breather valve for the oil tank of claim 1, characterized in that: the side of the first through hole (17) on the movable sleeve (8) is symmetrically provided with two through holes, the second through hole (18) is located right above the first through hole (17), and the second through hole (18) corresponds to the first through hole (17) one to one.
6. The explosion-proof breather valve for the oil tank of claim 1, wherein: the first fireproof net (6) is located between the first partition plate (4) and the second partition plate (5), and the second fireproof net (20) is located below the second partition plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315702.9A CN114688323B (en) | 2021-03-24 | 2021-03-24 | Explosion-proof breather valve for oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315702.9A CN114688323B (en) | 2021-03-24 | 2021-03-24 | Explosion-proof breather valve for oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114688323A true CN114688323A (en) | 2022-07-01 |
| CN114688323B CN114688323B (en) | 2024-03-19 |
Family
ID=82136120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110315702.9A Active CN114688323B (en) | 2021-03-24 | 2021-03-24 | Explosion-proof breather valve for oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114688323B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028973A (en) * | 1978-08-23 | 1980-03-12 | Tate & Lyle Ltd | An explosion protection device |
| US5836337A (en) * | 1997-11-17 | 1998-11-17 | Taylor; Julian S. | Large diameter low pressure relief valve |
| CN2756914Y (en) * | 2004-08-19 | 2006-02-08 | 张志宏 | Novel fire retardant aspiration valve |
| RU2384783C1 (en) * | 2009-02-13 | 2010-03-20 | Олег Савельевич Кочетов | Valve with fire-resistor |
| CN102269287A (en) * | 2011-05-31 | 2011-12-07 | 天津恒仁石油设备有限公司 | Anti-explosion fire-stopping breather valve |
| CN203348658U (en) * | 2013-07-03 | 2013-12-18 | 湖北万安环保石化设备有限公司 | Novel fire-retardant respiration valve for tank |
| CN204420239U (en) * | 2015-01-22 | 2015-06-24 | 上海凯凡石化设备有限公司 | Round-the-clock fire-retardant breather valve |
| CN110094559A (en) * | 2018-01-31 | 2019-08-06 | 陈品品 | A kind of explosion-proof flame-retardant breather valve |
-
2021
- 2021-03-24 CN CN202110315702.9A patent/CN114688323B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028973A (en) * | 1978-08-23 | 1980-03-12 | Tate & Lyle Ltd | An explosion protection device |
| US5836337A (en) * | 1997-11-17 | 1998-11-17 | Taylor; Julian S. | Large diameter low pressure relief valve |
| CN2756914Y (en) * | 2004-08-19 | 2006-02-08 | 张志宏 | Novel fire retardant aspiration valve |
| RU2384783C1 (en) * | 2009-02-13 | 2010-03-20 | Олег Савельевич Кочетов | Valve with fire-resistor |
| CN102269287A (en) * | 2011-05-31 | 2011-12-07 | 天津恒仁石油设备有限公司 | Anti-explosion fire-stopping breather valve |
| CN203348658U (en) * | 2013-07-03 | 2013-12-18 | 湖北万安环保石化设备有限公司 | Novel fire-retardant respiration valve for tank |
| CN204420239U (en) * | 2015-01-22 | 2015-06-24 | 上海凯凡石化设备有限公司 | Round-the-clock fire-retardant breather valve |
| CN110094559A (en) * | 2018-01-31 | 2019-08-06 | 陈品品 | A kind of explosion-proof flame-retardant breather valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114688323B (en) | 2024-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207441831U (en) | Balanced valve and battery case | |
| CN114688323A (en) | Explosion-proof breather valve for oil tank | |
| CN108413243B (en) | Automatic balancing device for emergency super and negative pressure of vertical storage tank | |
| CN102229320B (en) | Oil spillage cutoff valve | |
| CN209852983U (en) | Automatic exhaust valve with inner floating disc | |
| CN211911300U (en) | Pressure limiting valve and micro-pressure cooker | |
| CN215635244U (en) | Pilot piston type gas pressure reducing valve | |
| CN215167286U (en) | Ventilation skylight with fire extinguishing function | |
| CN215184405U (en) | Safety valve of storage battery | |
| CN213271191U (en) | Reaction tank pressure stabilizing valve | |
| CN112594427A (en) | Oil tank fire-retardant pressure valve that leakproofness is good | |
| CN208687032U (en) | A kind of pneumatic actuator of extraction check valve | |
| CN216895976U (en) | Explosion-proof back-fire relief breather valve with buffer function | |
| CN221443440U (en) | Large-flux breather valve structure with double connecting pipes connected with tank top | |
| CN102345761A (en) | Automatic exhaust valve | |
| CN201254340Y (en) | Container decompression cover | |
| CN220082217U (en) | Steam boiler relief valve | |
| CN214037021U (en) | All-weather fire-retardant breather valve | |
| CN210645502U (en) | Novel high-efficient denitration blender | |
| CN117869639A (en) | Breather valve with master-slave valve disc structure | |
| CN203979551U (en) | Inhalation valve | |
| CN221443439U (en) | Breather valve with annular split internal flow field | |
| CN218718735U (en) | Explosion-proof structure of safe pressure vessel | |
| CN217137520U (en) | Safe explosion-proof type pressure cooker | |
| CN220850875U (en) | Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure |
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 |