CN202945078U - Improved-blade stirring type extraction tower - Google Patents
Improved-blade stirring type extraction tower Download PDFInfo
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- CN202945078U CN202945078U CN 201220639639 CN201220639639U CN202945078U CN 202945078 U CN202945078 U CN 202945078U CN 201220639639 CN201220639639 CN 201220639639 CN 201220639639 U CN201220639639 U CN 201220639639U CN 202945078 U CN202945078 U CN 202945078U
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- blade
- settling tank
- tower body
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Abstract
The utility model discloses an improved-blade stirring type extraction tower which comprises a transmission device and a tower body, wherein the tower body is sequentially provided with an upper clarifying tank, a tower body and a lower clarifying tank from top to bottom; a liquid distributor is arranged at the joints between the upper clarifying tank and the lower clarifying tank and the tower body respectively; a rotary shaft penetrates into the tower body; a transmission device is connected with the rotary shaft; an impeller group is arranged on the rotary shaft; an upper cover plate and a blade are arranged on each impeller; the blade is fixed on the upper cover plate, and the shape of the blade in the length direction is a parabola; a fixing ring is arranged on the inner side wall of the tower body; a light-phase outlet interface is formed at the upper part of the upper clarifying tank, and a heavy-phase inlet interface is formed at the lower part; a light-phase inlet interface is formed at the upper part of the lower clarifying tank, and a heavy-phase outlet interface is formed at the lower part; and an interface control device is arranged in the upper clarifying tank and the lower clarifying tank respectively. The system provided by the utility model can realize extraction and back extraction of the industrial high-COD wastewater hard to deal with, realizes high extraction and back extraction efficiency, and can separate pollutants from wastewater and recover useful substances.
Description
Technical field
The utility model belongs to technical field of waste water processing and chemical separating apparatus field technical field, is specifically related to extraction and the reextraction device of COD in a kind of efficient removal waste water.
Background technology
Agitating extraction column is a kind of mechanical stirring extraction equipment that porous plate is housed.K ü hni tower is typical agitated compartmented extractor.This tower was proposed by Switzerland K ü hni company the sixties in 20th century, was mainly used in the separating-purifying of chemical industry, and the method for design of this tower did not also disclose at present.Although this tower is used widely in Europe, application seldom at home.The structure of the agitating extraction column that prior art is widely used comprises tower body, rotating shaft, turner, actuating unit, upper slurry tank, lower slurry tank and every dish.The principal element that affects the agitating extraction column mass transfer is that disperse phase retains mark and axial backmixing.Specifically cause the also not bery abundant of the factor, source, influence degree of back-mixing and range of influence research.For back-mixing between the mass-transfer efficiency that improves extraction tower, killer stage, many scientific workers are improved existing extraction tower structure.The disclosed a kind of turntable extracting tower that the inter-stage flap shutter is housed of Chinese invention patent CN1089015C, this extraction tower comprises tower body, set collar, rotating shaft, rotating disk and flap shutter.Flap shutter is placed between two rotating disks, and is fixed in rotating shaft, with set collar, in same plane, the diameter of flap shutter and the diameter ratio of rotating disk are 1-0.8:1, and the percentage of open area on flap shutter is 40%-60%.This invention increases after sieve aperture baffle plate the effectively axial backmixing between killer stage, is conducive to the mass transfer that rotating disc contactor interior two is alternate.Patent of invention CN101693150A discloses a kind of turntable extracting tower, comprises tower body, set collar, rotating shaft, rotating disk, turner, actuating unit, every dish, upper slurry tank, lower slurry tank.This patent is improved turner, turner comprises blade seat and first, second blade, the blade seat is fixed in described rotating shaft, and first, second blade is one every a distribution, and the first inclination angle on the first blade is contrary toward each other with the second inclination angle on the second blade.This invention is back-mixing, mass transfer enhancement efficiency between killer stage effectively.Utility model patent CN200960415Y discloses Mechanicallying agitate extraction column, the interconnective whipping appts that is provided with in extraction section, be provided with shaft coupling between stir shaft, shaft coupling comprises cylindrical bodies, in cylindrical bodies, top is square hole, bottom is circular hole, bottom has tapered hole, the circle of the lower end of stir shaft for matching with the square hole of cylindrical bodies internal upper part, the lower end of stir shaft is square for what match with the square hole of cylindrical bodies internal upper part, the stir shaft upper end is inserted in the circular hole of bottom in cylindrical bodies, be provided with tapered dowel in tapered hole, the stir shaft lower end is inserted in the square hole of cylindrical bodies internal upper part.It is convenient that this utility model is installed location, and installation strength is little, easy to maintenance.Utility model patent CN201664526U discloses a kind of centrifugal stirring type extracting tower, its cylindrical shell comprises upper shell, main cylinder and lower shell, upper shell is provided with light phase materials outlet and heavy phase material inlet, be provided with transmission shaft in cylindrical shell, transmission shaft is by the motor decelerating mechanism driven rotary that is arranged on the tower body top, be fixed with stationary ring on the main cylinder inwall, the position of transmission shaft in main cylinder is provided with rotating ring.Tower body is fixed on skirt, is fixed with plumer block in skirt, and the top of plumer block is provided with axis hole, be provided with bearing in plumer block, insert in bearing by the plumer block hole transmission shaft bottom, on transmission shaft, in the mechanical sealing member top, is provided with adsorption piece, respectively establishes the horizontal grid plate in upper shell and lower shell.The transmission shaft two end supports of this utility model, bottom is by the bearing pack load-bearing, and bearing pack can be born radially and axial power preferably, moves comparatively stable.Utility model patent CN202191725U discloses a kind of extraction tower interface control device, comprises extraction tower, is provided with differential pressure transmitter and magnetic valve on extraction tower, and differential pressure transmitter is controlled the unlatching of described magnetic valve.This utility model, by the switch of differential pressure transmitter and magnetic valve, realizes automatization control, makes extraction agent with thick ester, not enter next workshop section, can avoid the problem of other interfacial meters, better controls the extraction dosage of extraction tower, thus the effect of stabilization process.
In sum, although that agitating extraction column has is simple in structure, easy to operate, mass-transfer efficiency comparatively ideal and the strong point such as energy consumption is little, but still have the inter-stage back-mixing and affect the maximized performance of mass-transfer efficiency, this is also the technical issues that need to address that industry is paid close attention to and eager.In addition, interface control plays a key role in extraction tower design, and the fluctuation at interface will cause the unstable of liquid flow pattern in tower, thereby affect the two-phase mass transfer.Because magnetic valve or motorized valve are the designs of standard-sized sheet full cut-off, when magnetic valve or motorized valve standard-sized sheet, in tower, external phase moment discharges at a high speed, can cause the unbalance of tower inner fluid mechanics, may cause false liquid flooding.
The utility model content
technical problem:the utility model is for the problems referred to above, a kind of back-mixing between killer stage ideally is provided, promotes the inter-stage mixed effect
the improved agitated compartmented extractor of blade.
technical scheme:the improved agitated compartmented extractor of a kind of blade, comprise transmission mechanism and tower body, tower body is provided with settling tank from top to bottom successively, tower body and lower settling tank, upper settling tank and lower settling tank are respectively equipped with visor, the junction of upper settling tank and lower settling tank and tower body is respectively equipped with liquid distributor, run through in tower body and be provided with rotating shaft, transmission mechanism is connected with rotating shaft, rotating shaft is provided with impeller sets, described impeller sets is comprised of semiclosed-type impeller, each impeller is equipped with upper cover plate and 3-7 sheet blade, blade is fixed on upper cover plate, and perpendicular to upper cover plate, blade is parabola shaped being shaped as of length direction, wherein take rotating shaft core as initial point, take upper cover plate as plane coordinate system, blade molded line equation meets y=a
1x+a
2x
2, 0.01≤a
1≤ 0.5,0.01≤a
2≤ 1,0≤x≤1200mm, blade is wide is 5mm-100mm, the inner side-wall of tower body is provided with set collar, and the top of upper settling tank is provided with gently flows out interface mutually, and bottom is provided with heavy phase and enters interface, and the top of lower settling tank is provided with and gently enters mutually interface, and bottom is provided with heavy phase and flows out interface, be respectively equipped with the interface control device in upper settling tank and lower settling tank, to guarantee that in settling tank, water-oil interface are stable.
Described transmission mechanism comprises motor and speed reducer, and motor is connected with step-down gear, and step-down gear is taken the top that motor is fixed in tower body, and the output shaft of step-down gear is connected with rotating shaft.
Described upper cover plate perforate, percentage of open area is 10-60%.
The pass of the spacing h of described set collar and tower inside diameter D is h=0.225D
0.6, set collar is provided with through hole, and percentage of open area is 30%-70%, and the size in aperture is 5mm-50mm.
Described heavy phase flows out interface and is provided with motorized valve, magnetic valve and stopping valve.
Described interface control device comprises signal pickup assembly and fluid level transmitter, described signal pickup assembly is capacitive level probe or conductivity electrode, signal pickup assembly feeds back to fluid level transmitter by the water level signal collected, controlled the closure of motorized valve, magnetic valve and stopping valve by fluid level transmitter, thereby guarantee that in settling tank, water-oil interface are stable.
beneficial effect:
The utility model, being applied to the high-COD waste water processing, is extracted high-COD waste water, or the organic solvent after extraction is stripped, and simultaneously by interface control system, automatically control and extract dosage or waste water metering, thus stabilization process.Its agitating vane is parabola shaped, with traditional plane rotary disc, compares, and is particularly useful for organic removal in waste water, and the clearance of COD is greater than more than 90%, and, after stripping, reextraction efficiency reaches more than 99%.
The accompanying drawing explanation
The structural representation that Fig. 1 is the improved agitated compartmented extractor of the utility model blade, tower body in figure (1), transmission mechanism (2), rotating shaft (3), impeller sets (4), set collar (5), upper settling tank (6), lower settling tank (7), upper visor (8a), lower visor (8b), heavy phase enters interface (9), gently enter mutually interface (10), heavy phase flows out interface (11), gently flow out mutually interface (12), blade (13), upper cover plate (14), upper liquid distributor (15a), lower liquid distributor (15b), motor (16), step-down gear (17), output shaft (18), signal pickup assembly (19), motorized valve (21), magnetic valve (22), stopping valve (23),
The plan structure schematic diagram that Fig. 2 is the utility model impeller, blade in figure (13), upper cover plate (14);
Fig. 3 is the interface control schematic diagram; At first set the water-oil interface height value in upper and lower settling tank, in equipment running process, signal pickup assembly is measured the water-oil interface height value in tank body, after comparer compares set(ting)value and observed value, regulating and controlling valve (motorized valve, magnetic valve, stopping valve) is discharged waste water and strippant, so that the water-oil interface in tank body are highly stable.
Embodiment
Below by specific embodiment, further illustrate the utility model, but the utility model is not limited.Raw material of the present utility model, equipment and reagent is commercially available obtaining all unless otherwise indicated, or preparation can obtain according to this area ordinary method.Unless otherwise defined or the explanation, the same meaning that all specialties used herein and scientific words and those skilled in the art are familiar.
embodiment 1:
the improved agitated compartmented extractor of blade, tower body 1 can be comprised of a plurality of unit, total height is about 2-45m, the diameter of tower body 1 is about 100mm-2400mm, a plurality of tower bodies Unit 1 connects with cordwood principle in short transverse, no matter the element number number due to tower body 1, but the structure of the tower body 1 of each unit is identical, therefore following description is only for a tower body 1.Upper settling tank 6 is configured on tower body 1, lower settling tank 7 is configured in tower body 1 time, upper settling tank 6 and lower settling tank 7 all connect with flange form and tower body 1, upper settling tank 6 and lower settling tank 7 are respectively equipped with visor 8a and lower visor 8b, upper settling tank 6 and lower settling tank 7 are respectively equipped with liquid distributor 15a, lower liquid distributor 15b with the junction of tower body 1.Transmission mechanism 2 is fixed on the top of settling tank, and transmission mechanism 2 coordinates link by motor 16 and step-down gear 17, and takes by step-down gear 17 central part that motor 16 is fixed in the top of upper settling tank 6.The output shaft 18 of step-down gear 17 connects with rotating shaft 3, and its bind mode is that spiral marking connection or shaft coupling connect.Fix one group of set collar 5, its spacing h(m with interval mode on the inwall of the short transverse of tower body) with the pass of tower inside diameter D (m) be h=0.225D
0.6.Set collar 5 is fixed on Ta Bishang, and the percentage of open area of set collar 5 is 30%-70%, and the size in its aperture is 5mm-50mm.The impeller sets 4 of extraction tower is comprised of semiclosed-type impeller, each impeller comprises 3-7 sheet blade 13 and upper cover plate 14, blade is fixed on upper cover plate 14, blade 13 is perpendicular to upper cover plate 14, upper cover plate 14 perforates, percentage of open area is 10-60%, and the length direction of blade 13 is shaped as parabola shaped, and the width of blade 13 is 5mm-100mm.The molded line of blade is parabolic type, and its molded line equation is y=a
1x+a
2x
2, 0.01≤a
1≤ 0.5,0.01≤a
2≤ 1,0≤x≤1200mm, wherein take rotating shaft core as the blade initial point, take cover plate as plane coordinate system.Blade 13 can be fixed by welding on upper cover plate 14, also can fix with the right angle screw.Upper cover plate 14 is fixed in rotating shaft 3, and upper cover plate can be fixed by welding in rotating shaft 3, also can be screwed in rotating shaft 3.Interface control plays a key role in the extraction tower design.The interface control device is positioned at the middle part of settling tank 6 or lower settling tank 7, the interface control device comprises signal pickup assembly and fluid level transmitter, described signal pickup assembly 19 is capacitive level probe or conductivity electrode, signal pickup assembly feeds back to fluid level transmitter by the water level signal collected, when the water level of settling tank is too low, fluid level transmitter is closed motorized valve 21 or magnetic valve 22 and stopping valve 23, when water level is too high, fluid level transmitter is opened motorized valve 21 or magnetic valve 22 and stopping valve 23, efflux the part water yield, guarantee that the settling tank water-oil interface are stable.
embodiment 2:
Get Jiangsu active dye wastewater 1, in waste water, COD is 2.24 * 10
4mg/L, agent structure is identical with embodiment 1, and wherein, adopting the tower body diameter is 313mm, and the tower body height is 2800mm, and set collar is 21, and impeller is 20, and the molded line of blade is parabolic type, and each impeller has 3 blades, and its molded line equation is y=0.05x+0.05x
2, 5≤x≤150mm, when the rotating speed of rotating shaft 2 is 50r/min, when the throughput ratio of organic solvent and waste water is 1:1, the clearance of water outlet COD is 90%.When the blade in rotating shaft is a flat board, when the rotating speed of rotating shaft 2 is 50r/min, the flow of organic solvent and waste water, the clearance of water outlet COD is 80%.With above-mentioned extraction tower, to extracting rear solvent, stripped, when the rotating speed of rotating shaft 2 is 50r/min, the stripping rate of solvent reaches more than 99%.
embodiment 3:
Get Jiangsu active dye wastewater 2, in waste water, COD is 4.07 * 10
4mg/L, agent structure is identical with embodiment 2, and wherein, each impeller has 5 blades, and when the rotating speed of rotating shaft 2 is 100 r/min, when the throughput ratio of organic solvent and waste water is 1.5:1, the clearance of water outlet COD is more than 90%.With above-mentioned extraction tower, to extracting rear solvent, stripped, when the rotating speed of rotating shaft 2 is 70 r/min, the stripping rate of solvent reaches more than 99%.
embodiment 4:
Get Jiangsu H acid waste water, in waste water, COD is 10.07 * 10
4mg/L, agent structure is identical with embodiment 2, and wherein, each impeller has 6 blades, and when the rotating speed of rotating shaft 2 is 100 r/min, when the throughput ratio of organic solvent and waste water is 4:1, the clearance of water outlet COD is more than 90%.With above-mentioned extraction tower, to extracting rear solvent, stripped, when the rotating speed of rotating shaft 2 is 70 r/min, the stripping rate of solvent reaches more than 99%.
embodiment 5:
Get Jiangsu bis-phenol s waste water, in waste water, COD is 2.03 * 10
4mg/L, agent structure is identical with embodiment 2, and wherein, each impeller has 6 blades, and when the rotating speed of rotating shaft 2 is 100 r/min, when the throughput ratio of organic solvent and waste water is 1:1, the clearance of water outlet COD is more than 90%.With above-mentioned extraction tower, to extracting rear solvent, stripped, when the rotating speed of rotating shaft 2 is 70 r/min, the stripping rate of solvent reaches more than 99%.
embodiment 6:
The improved agitated compartmented extractor of a kind of blade, comprise transmission mechanism 2 and tower body, tower body is provided with settling tank 6 from top to bottom successively, tower body 1 and lower settling tank 7, upper settling tank 6 and lower settling tank 7 are respectively equipped with visor 8a, lower visor 8b, upper settling tank 6 and lower settling tank 7 are respectively equipped with liquid distributor 15a and lower liquid distributor 15b with the junction of tower body 1, run through in tower body and be provided with rotating shaft 3, transmission mechanism 2 is connected with rotating shaft, rotating shaft is provided with impeller sets 4, described impeller sets is comprised of semiclosed-type impeller, each impeller is equipped with upper cover plate 14 and 3-7 sheet blade 13, blade is fixed on upper cover plate 14, and perpendicular to upper cover plate, blade is parabola shaped being shaped as of length direction, wherein take rotating shaft core as initial point, take upper cover plate as plane coordinate system, blade molded line equation meets y=a
1x+a
2x
2, 0.01≤a
1≤ 0.5,0.01≤a
2≤ 1,0≤x≤1200mm, blade is wide is 5mm-100mm, the inner side-wall of tower body is provided with set collar 5, and the top of upper settling tank 6 is provided with gently flows out interface 12 mutually, and bottom is provided with heavy phase and enters interface 9, and the top of lower settling tank 7 is provided with and gently enters mutually interface 10, and bottom is provided with heavy phase and flows out interface 11, be respectively equipped with the interface control device in upper settling tank 6 and lower settling tank 7, to guarantee that in settling tank, water-oil interface are stable.
Described transmission mechanism 2 comprises motor 16 and step-down gear 17, and motor 16 is connected with step-down gear 17, and step-down gear 17 is taken the top that motor 16 is fixed in tower body, and the output shaft 18 of step-down gear 17 is connected with rotating shaft 3.
Described upper cover plate perforate, percentage of open area is 10-60%.
Described set collar is provided with through hole, and percentage of open area is 30%-70%, and the size in aperture is 5mm-50mm.
Described heavy phase flows out interface 11 and is provided with motorized valve 21, magnetic valve 22 and stopping valve 23.
Described interface control device comprises signal pickup assembly 19 and fluid level transmitter, described signal pickup assembly is capacitive level probe or conductivity electrode, signal pickup assembly feeds back to fluid level transmitter by the water level signal collected, controlled the closure of motorized valve 21, magnetic valve 22 and stopping valve 23 by fluid level transmitter, thereby guarantee that in settling tank, water-oil interface are stable.
Claims (6)
1. the improved agitated compartmented extractor of blade, comprise transmission mechanism (2) and tower body, it is characterized in that tower body is provided with settling tank (6) from top to bottom successively, tower body (1) and lower settling tank (7), upper settling tank (6) and lower settling tank (7) are respectively equipped with visor, upper settling tank (6) and lower settling tank (7) are respectively equipped with liquid distributor with the junction of tower body (1), run through in tower body and be provided with rotating shaft (3), transmission mechanism (2) is connected with rotating shaft, rotating shaft is provided with impeller sets (4), described impeller sets is comprised of semiclosed-type impeller, each impeller is equipped with upper cover plate (14) and 3-7 sheet blade (13), blade is fixed on upper cover plate (14), and perpendicular to upper cover plate, blade is parabola shaped being shaped as of length direction, wherein take rotating shaft core as the blade initial point, take upper cover plate as plane coordinate system, blade molded line equation meets y=a
1x+a
2x
2, 0.01≤a
1≤ 0.5,0.01≤a
2≤ 1,0≤x≤1200mm, blade is wide is 5mm-100mm, the inner side-wall of tower body is provided with set collar (5), the top of upper settling tank (6) is provided with gently flows out interface (12) mutually, bottom is provided with heavy phase and enters interface (9), and the top of lower settling tank (7) is provided with and gently enters mutually interface (10), and bottom is provided with heavy phase and flows out interface (11), be respectively equipped with the interface control device in upper settling tank (6) and lower settling tank (7), to guarantee that in settling tank, water-oil interface are stable.
2. the improved agitated compartmented extractor of a kind of blade according to claim 1, it is characterized in that described transmission mechanism (2) comprises motor (16) and step-down gear (17), motor (16) is connected with step-down gear (17), step-down gear (17) is taken the top that motor (16) is fixed in tower body, and the output shaft (18) of step-down gear (17) is connected with rotating shaft (3).
3. the improved agitated compartmented extractor of a kind of blade according to claim 1, is characterized in that described upper cover plate perforate, and percentage of open area is 10-60%.
4. the improved agitated compartmented extractor of a kind of blade according to claim 1, is characterized in that the spacing h of described set collar and the pass of tower inside diameter D are h=0.225D
0.6, set collar is provided with through hole, and percentage of open area is 30%-70%, and the size in aperture is 5mm-50mm.
5. the improved agitated compartmented extractor of a kind of blade according to claim 1, is characterized in that described heavy phase flows out interface (11) and is provided with motorized valve (21), magnetic valve (22) and stopping valve (23).
6. the improved agitated compartmented extractor of a kind of blade according to claim 1, it is characterized in that described interface control device comprises signal pickup assembly (19) and fluid level transmitter, described signal pickup assembly is capacitive level probe or conductivity electrode, signal pickup assembly feeds back to fluid level transmitter by the water level signal collected, controlled the closure of motorized valve (21), magnetic valve (22) and stopping valve (23) by fluid level transmitter, thereby guarantee that in settling tank, water-oil interface are stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220639639 CN202945078U (en) | 2012-11-28 | 2012-11-28 | Improved-blade stirring type extraction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220639639 CN202945078U (en) | 2012-11-28 | 2012-11-28 | Improved-blade stirring type extraction tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202945078U true CN202945078U (en) | 2013-05-22 |
Family
ID=48420786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220639639 Withdrawn - After Issue CN202945078U (en) | 2012-11-28 | 2012-11-28 | Improved-blade stirring type extraction tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202945078U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974128A (en) * | 2012-11-28 | 2013-03-20 | 中国科学院南京土壤研究所 | Centrifugal stirring extraction tower |
| CN106745443A (en) * | 2017-01-18 | 2017-05-31 | 赵俊博 | A kind of extracting process of low concentration of water sample extraction device to phenol in water quality |
| CN114426863A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Liquid interface control device and method for furfural extraction tower |
-
2012
- 2012-11-28 CN CN 201220639639 patent/CN202945078U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974128A (en) * | 2012-11-28 | 2013-03-20 | 中国科学院南京土壤研究所 | Centrifugal stirring extraction tower |
| CN102974128B (en) * | 2012-11-28 | 2014-11-19 | 中国科学院南京土壤研究所 | Centrifugal stirring extraction tower |
| CN106745443A (en) * | 2017-01-18 | 2017-05-31 | 赵俊博 | A kind of extracting process of low concentration of water sample extraction device to phenol in water quality |
| CN106745443B (en) * | 2017-01-18 | 2018-02-06 | 赵俊博 | A kind of extracting process of low concentration of water sample extraction device to phenol in water quality |
| CN114426863A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Liquid interface control device and method for furfural extraction tower |
| CN114426863B (en) * | 2020-10-29 | 2023-10-20 | 中国石油化工股份有限公司 | Furfural extraction tower liquid interface control device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20141119 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20141119 |
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| RGAV | Abandon patent right to avoid regrant |