CN202893248U - Dual-spiral stirring device - Google Patents
Dual-spiral stirring device Download PDFInfo
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- CN202893248U CN202893248U CN 201220505383 CN201220505383U CN202893248U CN 202893248 U CN202893248 U CN 202893248U CN 201220505383 CN201220505383 CN 201220505383 CN 201220505383 U CN201220505383 U CN 201220505383U CN 202893248 U CN202893248 U CN 202893248U
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Abstract
The utility model discloses a dual-spiral stirring device, comprising a bracket, wherein the bracket is provided with a stirring mechanism and a lifting mechanism for lifting the stirring mechanism; the stirring mechanism comprises a stirrer and a stirrer driving component for driving the whole stirrer to rotate; the stirrer comprises at least one stirring blade and a stirring blade driving component for driving the stirring blade to rotate; the stirring blade comprises a stirring shaft which is provided with an upper blade and a lower blade; a fluid backflushing distance is left between the upper blade and the lower blade; the upper blade and the lower blade comprise at least one group of dual-spiral screw belts respectively; and the spiral direction of the dual-spiral screw belts of the upper blade is opposite to that of dual-spiral screw belts of the lower blade. The dual-spiral stirring device disclosed by the utility model has the advantages that the splashing of slurry is reduced, even avoided, the barreling rate is increased and the mixing of the slurry is uniform.
Description
Technical field
The utility model relates to a kind of agitating device, relates in particular to a kind of double helix agitating device.
Background technology
The nuclear power refuse that nuclear power station or nuclear field produce, owing to there is radioactivity, can not simple process to these refuses, the form that generally will adopt cement solidification in cement block, prevents the radwaste contaminated environment with solidification of waste, and human body is worked the mischief.
When the cement solidification line is cured refuse, need to adopt agitating device to stir, there is following problem in existing agitating device: one, be prone to the situation that slurry splashes in whipping process, the slurry that splashes has produced the irradiation impact with radioactivity to environment, personnel, and causes the not high problem of barrelling rate.Two, a lot of cement slurry of adhesion on the paddle after stirring is finished, the residue of these cement slurries has radiation, and the personnel that process this residue are caused irradiation injury.Three, to mix be not very even to slurry, causes the curing indexs such as the firming body intensity that forms behind the slurry curing, uniformity to go wrong.
The utility model content
The technical problems to be solved in the utility model is, for defective above-mentioned in the prior art, provides a kind of and reduces even avoid slurry and splash, improve the double helix agitating device that barrelling rate, slurry mix.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of double helix agitating device, comprise support, described support is provided with rabbling mechanism, is used for promoting the hoisting mechanism of rabbling mechanism, described rabbling mechanism comprises agitator, drives the stirrer-driven assembly of agitator unitary rotation, and described agitator comprises at least one paddle, drives the paddle driven unit that paddle rotates; Described paddle comprises shaft, be provided with blade and lower blade on the shaft, leave fluid recoil spacing between described upper blade and the lower blade, described upper blade and lower blade all comprise respectively at least one group of double helix ribbon, and the double helix ribbon of described upper blade is opposite with the hand of spiral of the double helix ribbon of described lower blade.
In the described double helix agitating device, described shaft is provided with the vibrator assembly for generation of vibration with hollow cavity in the described hollow cavity; Described vibrator assembly comprises upper fixed seat, the lower fixed seat that is fixed on the shaft hollow cavity inwall, is provided with vibrator between upper fixed seat and lower fixed seat, and described vibrator is connected with the cable that is connected with controlling organization.
In the described double helix agitating device, described upper blade and lower blade arrange at least respectively two groups of double helix ribbons and these double helix ribbons and are close in turn up and down and arrange.
In the described double helix agitating device, the angle of spiral α of every ribbon in the described double helix ribbon is: 20 °～60 °.
In the described double helix agitating device, described shaft, upper blade and lower blade are structure as a whole.
In the described double helix agitating device, described stirrer-driven assembly comprises rotating disk for fixing agitator, drives the rotating disk drive motors of dial rotation, and described rotating disk drive motors is fixed on the support; Described rotating disk drive motors is connected with the rotating disk eccentric rotary, drives the rotating disk eccentric rotary, and described paddle is rotatably connected on center of turntable; Perhaps described rotating disk drive motors and center of turntable are rotationally connected the drive dial rotation, and described paddle eccentric rotary is connected on the rotating disk.
In the described double helix agitating device, the motor shaft of described rotating disk drive motors is provided with overload protective device.
In the described double helix agitating device, described paddle is arranged side by side at least two.
In the described double helix agitating device, described paddle motor is connected drive, and it rotates with the shaft of a described paddle, and the shaft of all the other described paddles rotates synchronously by gear train and the engagement of this shaft.
In the described double helix agitating device, the screw pair that described hoisting mechanism comprises lifting motor, is rotationally connected with lifting motor.
In the described double helix agitating device, described support is provided with rabbling mechanism hoisting depth, falling head is carried out spacing position-limit mechanism.
Agitating device of the present utility model is to be provided with rabbling mechanism and hoisting mechanism at support, wherein rabbling mechanism comprises two parts: a part is that to drive the agitator unitary rotation by the stirrer-driven assembly be that agitator revolves round the sun, another part is that the paddle driven unit paddle in the agitator rotates, it is the rotation of agitator, so just increased mixing effect, enlarge stirring region, improved the uniformity of stirring efficiency and stirring.
The utility model is divided into upper blade and lower blade two parts with existing blade, and this two-part hand of spiral is opposite, lower blade drives upward fluid, and upper blade drive fluid moves downward, so that the slurry under stirring produces respectively flowing of different directions in the upper and lower, this structure can improve mixed effect on the one hand, greatly reduces on the other hand slurry and splashes.Simultaneously, because slurry splashes when having reduced stirring, the barrelling rate is also corresponding to be improved greatly, has improved the treatment of wastes produced ability, has saved processing cost, has improved treatment effeciency.And leave spacing between upper blade and the lower blade, so that slurry forms the recoil zone in whipping process, the slurry that splashes is formed effective compacting, reduce slurry and splash.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment paddle the first embodiment;
Fig. 3 is the structural representation of the utility model embodiment paddle the second embodiment;
Fig. 4 is the structural representation of the third embodiment of the utility model embodiment paddle.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present utility model in detail.
Shown in Fig. 1 ~ 3, a kind of double helix agitating device comprises support 100, and support 100 is used for integrated support, and its shape and structure is not construed as limiting.Described support 100 is provided with rabbling mechanism 200, is used for promoting the hoisting mechanism 300 of rabbling mechanism 200, described rabbling mechanism 200 comprises agitator, drives the stirrer-driven assembly 7 of agitator unitary rotation, and described agitator comprises at least one paddle 4, drives the paddle driven unit 6 that paddle 4 rotates; Described paddle 4 comprises shaft 41, be provided with blade 42 and lower blade 43 on the described shaft 41, leave fluid recoil spacing between described upper blade 42 and the lower blade 43, described upper blade and lower blade 43 all comprise respectively at least one group of double helix ribbon, and the double helix ribbon of described upper blade 42 is opposite with the hand of spiral of the double helix ribbon of described lower blade 43.
As shown in Figure 1, rabbling mechanism 200 comprises two parts, and a part is agitator, and another part is the stirrer-driven assembly 7 that drives the agitator unitary rotation.Stirring of the present utility model has two processes: one is the agitator revolution, and one is the agitator rotation.These two processes realize that simultaneously so that stirring is more abundant, stirring region is larger.In paddle 4 rotations, agitator unitary rotation track can be circular or oval in agitator unitary rotation and the agitator, also can be that rotate in the original place.A kind of mode before preferred, realize structure circular or oval revolution: a kind of is that described stirrer-driven assembly 7 comprises rotating disk 72 for fixing agitator, drives the rotating disk drive motors 71 of rotating disk 72 rotations, and described rotating disk drive motors 71 is fixed on the support 100; Described rotating disk drive motors 71 is connected with rotating disk 72 eccentric rotary, drives rotating disk 72 eccentric rotary, and described paddle 4 is rotatably connected on rotating disk 72 centers; Another kind is that described rotating disk drive motors 71 is connected 72 rotations of drive rotating disk with rotating disk 72 center rotatings, and described paddle 4 eccentric rotary are connected on the rotating disk 72, and this dual mode can both form eccentric revolution.This whipped form of the utility model can comparatively thoroughly stir to slurry, does not stay the dead angle in the container, and the firming body of making is homogeneous, intensity is high, meets the GB requirement.Present embodiment adopts paddle 4 eccentric modes of installing.
Shown in Fig. 1 ~ 4, the critical piece of agitator is paddle 4, paddle driven unit 6, and wherein paddle 4 comprises shaft 41, upper blade 41, lower blade 43.Can adopt shaft 41, upper blade 41, lower blade 43 to make respectively in the utility model, then upper blade 41, lower blade 43 are fixedly connected with shaft 41 and make paddle 4, the mode that is fixedly connected with can be multiple, such as: bolt connection, welding, riveted joint etc., carry the adhesion slurry in order to reduce blade, with shaft 41, upper blade 41, lower blade 43 integral solder, so that described shaft 41, upper blade 41 and lower blade 43 are structure as a whole, easy cleaning, and reduce corrosion.
Since contain radioactive substance and the corrosive substance such as acid, alkaline in the nuclear power refuse, shaft 41, upper blade 41 and lower blade 43 selected material require acid and alkali-resistances and the material that not affected by irradiation, and present embodiment is selected stainless steel.
Shown in Fig. 2,3,4, because invention main purpose of the present utility model is to splash in order to reduce slurry, just adopts and realize at upper blade 41, the lower blade 43 of same shaft 41 usefulness different structures; The quantity of the double helix ribbon in the preferred described lower blade 43 is more than the quantity of the double helix ribbon in the upper blade 41, better reduces or avoids slurry to splash.Upper blade 41 and lower blade 43 are respectively provided to few one group double helix ribbon, and the quantity that the double helix ribbon arranges is relevant according to the size of the stirred vessel degree of depth, double helix ribbon.The many groups double helix ribbon shape that arranges at same shaft 41, structure, measure-alike also can be different.The structure of the double helix ribbon in the structure of the double helix ribbon in the present embodiment in the preferred described lower blade 43 and the upper blade 41 is identical.Upper blade 41 as shown in Figure 2 adopts identical double helix ribbon with lower blade 43; Shown in Fig. 3,4, upper blade 41 and lower blade 43 all adopt respectively the double helix ribbon of different structure shape.
What upper blade 41 of the present utility model, lower blade 43 adopted is the ribbon structure, the double helix ribbon namely is set in groups, the double helix ribbon is that the ribbon of two spirals forms, and the shape and structure of ribbon is not construed as limiting in the utility model, and the ribbon of arbitrary structures form all is suitable for the utility model.Article two, ribbon can be symmetrical arranged also and can asymmetricly arrange, and its structure, shape, size can be the same or different.The structures such as the container of corresponding circle tubular and approximate construction thereof preferably adopts symmetrical structure, measure-alike two ribbons, and is corresponding rectangular-shaped preferably adopt unsymmetric structure or two different ribbons of size.Present embodiment preferred structure, shape, measure-alike two ribbons.
As shown in Figure 4, for the ease of in whipping process, form eddy current in order to control slurry, the angle of spiral α of every ribbon in the preferred described double helix ribbon is: 20 °～60 °.When the rotating speed one of paddle regularly, angle of spiral α is larger, illustrate that helix is steeper, then the velocity component that makes progress of fluid is larger, and horizontal velocity component is less so that flow field tubulence energy when same cross-sectional is large, but the effective cross-section that stirs zone is just less.
α is excessive when the angle of spiral, when the tubulence energy that upper free and easy produces can not balance, will produce and splash, because following blade is many, the tubulence energy that the flow field produces is large.α is too small when the angle of spiral, and the tubulence energy that the flow field produces is less than normal, and the material of the same area is effectively mixed, in other words: at the same area, can not form effective eddy current, make material stirring even.
The size that angle of spiral α selects is mainly relevant with the material system that stirs, and when the material system density was bigger than normal, angle of spiral α was also bigger than normal, and the tubulence energy that namely requires is also just larger, just can make material be in suspended state.In the utility model, material is cement slurry, and the angle of spiral α of selection is 20 °～60 °, and the eddy current that forms in this scope can make material be in suspended state, can not sink to the bottom, and arrives the effect that stirs.
Correspondence was arranged about the preferred described upper blade 41 of the utility model arranged two groups of double helix ribbons and these double helix ribbons at least.Correspondence was arranged about simultaneously preferred described lower blade 43 arranged two groups of double helix ribbons and these double helix ribbons at least.Because slurry viscosity is larger, in order to be stirred to all zones, and to drive the slurry rotation and form eddy current, the double helix ribbon in the preferred described upper blade 41 is close in turn arranges up and down, and the double helix ribbon in the described lower blade 43 also is close in turn arranges up and down.
As shown in Figure 3, another goal of the invention of the utility model is to reduce slurry adhesion on paddle 4, the form that employing arranges vibrator assembly 45 realizes this goal of the invention, be that described shaft 41 is tubular structure, with hollow cavity, be provided with the vibrator assembly 45 for generation of vibration in the described hollow cavity, after finishing stirring, on when carrying paddle 4, open simultaneously vibrator assembly 45 vibrations, the slurry of adhesion on the paddle 4 is shaken by vibration.
Described vibrator assembly 45 comprises upper fixed seat 452, the lower fixed seat 454 that is fixed on the shaft 41 hollow cavity inwalls, vibrator assembly 45 operated by rotary motion are in shaft 41 bottoms, install from shaft 41 bottoms, upper fixed seat 452 and lower fixed seat 454 are directly fixed by various ways such as welding, be spirally connected.Be provided with vibrator 453 between upper fixed seat 452 and lower fixed seat 454, described vibrator 453 is connected with the cable 451 that is connected with controlling organization, and controlling organization starts or stops by cable 451 control vibrators 453.
Vibrator 453 can directly adopt existing conventional vibrator, does not repeat them here.
The top of shaft 41 is provided with connector 44 and is used for being connected with paddle driving mechanism 6.Connector 44 can be ring flange, be threaded connect first-class.
As shown in Figure 1, described paddle driven unit 6 comprises paddle drive motors 61, and paddle drive motors 61 drives paddle 4 rotations.Paddle 4 can arrange one, also can arrange a plurality ofly, and when a paddle 4 was set, paddle drive motors 61 directly connected paddle 4 by shaft coupling.When a plurality of paddle 4 was set, paddle drive motors 61 is connected drive, and it rotated with the shaft 41 of a described paddle 4, and the shaft 41 of all the other described paddles 4 is by gear train 62 and synchronous rotation of this shaft 41 engagements.In order to strengthen mixing effect, described paddle 4 is arranged side by side at least two, can leave spacing between a plurality of paddles 4, also can not stay spacing.Paddle 4 arranges two in the present embodiment, and two paddles 4 be arranged in parallel, is close between the two, but does not interfere between the adjacent left and right sides double helix ribbon.
Owing to stir the rotating disk drive motors 71 that resistance causes greatly and damage, be provided with overload protective device 73 at the motor shaft of rotating disk drive motors 71 in order to prevent in the whipping process.Overload protective device 73 comprises overload protective device body and approach switch.Resistance is above appraising and deciding load when stirring; the gear drive that is connected with overload protective device 73 is passed to overload protective device 73 with load, and overload protective device 73 is thrown off automatically, and approach switch receives signal; then stop to stir by control system control, thereby play a protective role.Present embodiment adopts the ball-type overload protective device, and the built-in precise ball of overload protective device 73 mechanism can throw off main passive transmission in overload moment.After overload is removed, restart device, overload protective device 73 running that resets.Overload protective device 73 is routine techniques, does not repeat them here.
As shown in Figure 1, described hoisting mechanism 300 Main Functions are the liftings to rabbling mechanism 200, and all mechanisms that can play castering action all are suitable for the utility model.Such as the screw body under the driven by motor, worm-and-wheel gear, sprocket wheel link chain mechanism, pinion and rack etc., what present embodiment adopted is screw body, the screw pair 32 that hoisting mechanism 300 comprises lifting motor 31, is rotationally connected with lifting motor 31.Lead screw pair 32 concrete structures are routine techniques, do not repeat them here.
As shown in Figure 1, described support 100 is provided with rabbling mechanism 200 hoisting depths, falling head is carried out spacing position-limit mechanism 8, has avoided the excessive lifting of rabbling mechanism 200 and excessively reduction.Position-limit mechanism 8 is limit switch, be separately positioned on bottom and the top of support 100, be provided with block 721 at rotating disk 72, when rabbling mechanism 200 is promoted to block 721 and touches the position-limit mechanism 8 on support 100 tops, position-limit mechanism 8 sends signal, carries in the control no longer; When rabbling mechanism 200 dropped to block 721 and touches the position-limit mechanism 8 of support 100 bottoms, position-limit mechanism 8 sent signal, and control no longer descends.
Claims (10)
1. double helix agitating device, comprise support, described support is provided with rabbling mechanism, is used for promoting the hoisting mechanism of rabbling mechanism, it is characterized in that, described rabbling mechanism comprises agitator, drives the stirrer-driven assembly of agitator unitary rotation, and described agitator comprises at least one paddle, drives the paddle driven unit that paddle rotates; Described paddle comprises shaft, be provided with blade and lower blade on the shaft, leave fluid recoil spacing between described upper blade and the lower blade, described upper blade and lower blade all comprise respectively at least one group of double helix ribbon, and the double helix ribbon of described upper blade is opposite with the hand of spiral of the double helix ribbon of described lower blade.
2. double helix agitating device according to claim 1 is characterized in that, described shaft is provided with the vibrator assembly for generation of vibration with hollow cavity in the described hollow cavity; Described vibrator assembly comprises upper fixed seat, the lower fixed seat that is fixed on the shaft hollow cavity inwall, is provided with vibrator between upper fixed seat and lower fixed seat, and described vibrator is connected with the cable that is connected with controlling organization.
3. double helix agitating device according to claim 1 is characterized in that, described upper blade and lower blade arrange at least respectively two groups of double helix ribbons and these double helix ribbons and be close in turn up and down and arrange.
4. double helix agitating device according to claim 1 is characterized in that, the angle of spiral α of every ribbon in the described double helix ribbon is: 20 °～60 °.
5. the described double helix agitating device of any one is characterized in that according to claim 1 ~ 4, and described stirrer-driven assembly comprises rotating disk for fixing agitator, drives the rotating disk drive motors of dial rotation, and described rotating disk drive motors is fixed on the support;
Described rotating disk drive motors is connected with the rotating disk eccentric rotary, drives the rotating disk eccentric rotary, and described paddle is rotatably connected on center of turntable;
Perhaps described rotating disk drive motors and center of turntable are rotationally connected the drive dial rotation, and described paddle eccentric rotary is connected on the rotating disk.
6. double helix agitating device according to claim 5 is characterized in that, the motor shaft of described rotating disk drive motors is provided with overload protective device.
7. double helix agitating device according to claim 6 is characterized in that, described paddle is arranged side by side at least two.
8. double helix agitating device according to claim 7 is characterized in that, described paddle motor is connected drive, and it rotates with the shaft of a described paddle, and the shaft of all the other described paddles rotates synchronously by gear train and the engagement of this shaft.
9. the described double helix agitating device of any one is characterized in that according to claim 1 ~ 4, the screw pair that described hoisting mechanism comprises lifting motor, is rotationally connected with lifting motor.
10. the described double helix agitating device of any one is characterized in that according to claim 1 ~ 4, and described support is provided with rabbling mechanism hoisting depth, falling head are carried out spacing position-limit mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505383 CN202893248U (en) | 2012-09-29 | 2012-09-29 | Dual-spiral stirring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505383 CN202893248U (en) | 2012-09-29 | 2012-09-29 | Dual-spiral stirring device |
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| CN202893248U true CN202893248U (en) | 2013-04-24 |
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| CN 201220505383 Expired - Lifetime CN202893248U (en) | 2012-09-29 | 2012-09-29 | Dual-spiral stirring device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363374A (en) * | 2015-11-18 | 2016-03-02 | 亚太水处理(天长)有限公司 | Sewage stirrer |
| CN106345347A (en) * | 2016-10-09 | 2017-01-25 | 芜湖瑞德机械科技有限公司 | Paint mixing and stirring device for decoration of building and operation method of paint mixing and stirring device |
| CN107537356A (en) * | 2017-09-27 | 2018-01-05 | 江门市华石涂料有限公司 | Water paint produces board |
| CN109225004A (en) * | 2018-10-28 | 2019-01-18 | 福州蓝密码机电技术有限公司 | A kind of spinning and weaving workshop agitating device |
| CN109289640A (en) * | 2018-10-28 | 2019-02-01 | 福州蓝密码机电技术有限公司 | A kind of working method of spinning and weaving workshop agitating device |
| CN110788994A (en) * | 2019-10-16 | 2020-02-14 | 上海双秋混凝土制品有限公司 | Concrete mixing main machine |
| CN112138562A (en) * | 2020-10-27 | 2020-12-29 | 邢台海裕锂能电池设备有限公司 | Method for stirring slurry with high positive and negative solid contents of lithium battery |
| CN113230950A (en) * | 2021-06-17 | 2021-08-10 | 北京化工大学 | Shaft rod mechanism capable of realizing vertical reciprocating rotation of stirrer |
| CN115672244A (en) * | 2022-10-27 | 2023-02-03 | 安徽沙丰新材料有限公司 | Helical ribbon type reactor |
-
2012
- 2012-09-29 CN CN 201220505383 patent/CN202893248U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363374A (en) * | 2015-11-18 | 2016-03-02 | 亚太水处理(天长)有限公司 | Sewage stirrer |
| CN106345347A (en) * | 2016-10-09 | 2017-01-25 | 芜湖瑞德机械科技有限公司 | Paint mixing and stirring device for decoration of building and operation method of paint mixing and stirring device |
| CN107537356A (en) * | 2017-09-27 | 2018-01-05 | 江门市华石涂料有限公司 | Water paint produces board |
| CN109225004A (en) * | 2018-10-28 | 2019-01-18 | 福州蓝密码机电技术有限公司 | A kind of spinning and weaving workshop agitating device |
| CN109289640A (en) * | 2018-10-28 | 2019-02-01 | 福州蓝密码机电技术有限公司 | A kind of working method of spinning and weaving workshop agitating device |
| CN110788994A (en) * | 2019-10-16 | 2020-02-14 | 上海双秋混凝土制品有限公司 | Concrete mixing main machine |
| CN112138562A (en) * | 2020-10-27 | 2020-12-29 | 邢台海裕锂能电池设备有限公司 | Method for stirring slurry with high positive and negative solid contents of lithium battery |
| CN112138562B (en) * | 2020-10-27 | 2022-07-29 | 邢台海裕锂能电池设备有限公司 | Method for stirring slurry with high solid content of positive and negative electrodes of lithium battery |
| CN113230950A (en) * | 2021-06-17 | 2021-08-10 | 北京化工大学 | Shaft rod mechanism capable of realizing vertical reciprocating rotation of stirrer |
| CN115672244A (en) * | 2022-10-27 | 2023-02-03 | 安徽沙丰新材料有限公司 | Helical ribbon type reactor |
| CN115672244B (en) * | 2022-10-27 | 2023-06-13 | 安徽沙丰新材料有限公司 | Spiral-link reactor |
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Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
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| CX01 | Expiry of patent term |