CN204086284U - A kind of water quality analytical system - Google Patents
A kind of water quality analytical system Download PDFInfo
- Publication number
- CN204086284U CN204086284U CN201420175507.6U CN201420175507U CN204086284U CN 204086284 U CN204086284 U CN 204086284U CN 201420175507 U CN201420175507 U CN 201420175507U CN 204086284 U CN204086284 U CN 204086284U
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- water quality
- reaction vessel
- quality analytical
- analytical system
- metering
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 239000011521 glass Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 10
- 230000002572 peristaltic effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004313 potentiometry Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
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- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The utility model discloses a kind of water quality analytical system, comprising: multi-channel direction selecting valve (1), this multi-channel direction selecting valve (1) has public port (k) and multiple distribution ports (a-h) that alternatively can be communicated with described public port (k); Reaction vessel (5), the bottom of this reaction vessel (5) is provided with passway (j); Metering isolated tube (2), this metering isolated tube (2) is connected between described public port (k) and described passway (j); And liquid level detector (3), this liquid level detector (3) is arranged in the pipeline of described metering isolated tube (2); It is characterized in that, described water quality analytical system also comprises fluid driver (4), and this fluid driver (4) is arranged in the pipeline of described metering isolated tube (2), and the top of described reaction vessel (5) and air communicate.
Description
Technical field
The utility model relates to a kind of analytical instrument, particularly a kind of analytical instrument of water quality.
Background technology
At present based on wet chemical analysis, there is ± even more high-precision special the analytical instrument of water quality of 10% precision, the analysis process that its course of work adopts usually " water sample mix with reagent-react-detect ": water sample to be measured and other reaction reagents are first injected reaction vessel by instrument successively, react under certain condition after mixing, detect finally by principles such as colourimetry, titrimetry or electrode methods, determine the concentration of water sample index to be measured.In prior art, the flow path designs of above-mentioned special analytical instrument of water quality can be roughly divided into following three classes, feed liquor technology, classical Flow Injection Technique and sequential injection technology that namely hyperchannel is discrete.
Patented claim ZL200820088159.3(notification number is CN201210146Y) disclose a kind of monitoring water quality on line system based on sequential injection technology, comprise pump, liquid storage unit, reaction-detecting unit, multi-channel direction selecting valve and air duct, the water sample of this system, reagent and cleaning fluid and waste liquid all must put into liquid storage unit transfer, especially when the liquid volume in reaction-sensing chamber is greater than liquid storage unit volume, then need the transfer operation back and forth performed more than once, go to step not only complicated time-consuming in these, and easily on the wall of liquid storage unit, remain liquid film even liquid pearl, affect the measuring accuracy of instrument.
Patented claim ZL201110295060.7(notification number is CN103033499A) disclose a kind of water quality analytical system, as shown in Figure 1, in this system, multi-channel direction selecting valve 1, liquid capacity-fixed pipe 2 and reaction vessel 5 are connected, by the driving of peristaltic pump 4, system is when feed liquor or discharge opeing, liquid moves all the time in the same direction, avoids sequential injection formula flow path system and by the defect of liquid storage unit transfer liquid, must improve the work efficiency of analytic system.But in this technical scheme, there is the space that is held air in ullage in reaction vessel, during peristaltic pump drive system drawing liquid, the gas being contained in this space is pumped into the negative pressure relative to air to a certain extent, and when peristaltic pump quits work, negative pressure can not disappear immediately, what thus flow to the liquid of reaction vessel can't stop flowing immediately, have the delayed of certain hour on the contrary and can disturbance be produced, cause the volume of actual sampling inaccurate, thus have impact on the measuring accuracy of system.
Summary of the invention
The purpose of this utility model is to provide a kind of water quality analytical system, and this water quality analytical system avoids gas in reaction vessel and, on the impact of sample volume, improves the measuring accuracy of system.
To achieve these goals, the utility model provides a kind of water quality analytical system, comprising: multi-channel direction selecting valve, and this multi-channel direction selecting valve has public port and multiple distribution ports that alternatively can be communicated with described public port; Reaction vessel, the bottom of this reaction vessel is provided with passway; Metering isolated tube, this metering isolated tube is connected between described public port and described passway; And liquid level detector, this liquid level detector is arranged in the line segments of described metering isolated tube; It is characterized in that, described water quality analytical system also comprises fluid driver, and this fluid driver is arranged in the line segments of described metering isolated tube, and the top of described reaction vessel and air communicate.
Preferably, described fluid driver is the driver of positive and negative bi-directional drive.Preferably, described fluid driver is peristaltic pump.
Preferably, described fluid driver is arranged in the line segments between described liquid level detector and described passway.
Preferably, described metering isolated tube comprises constant volume tube and air insulated pipe, and described liquid level detector is arranged on the connecting portion of described constant volume tube and air insulated pipe.
Preferably, stop valve is provided with between described fluid driver and described passway.
Preferably, described multiple distribution port comprises the air distribution port of and air communication.
Preferably, described liquid level detector be not with the non-contact type liquid level detector of fluid contact.
Preferably, described reaction vessel is the transparent vessel that plastics, quartz or glass are made.
Preferably, described constant volume tube and air insulated Guan Jun are the pipes that internal diameter is less than 4 millimeters.
Preferably, described constant volume tube and air insulated pipe are plastics, quartz or glass material.
Preferably, the internal diameter of described reaction vessel is greater than 7 millimeters.
Preferably, the arranged outside of described reaction vessel has light source and corresponding photodetector.
Preferably, the inside of described reaction vessel is also provided with electrode pair.
Preferably, the inside of described reaction vessel is also provided with ion-selective electrode.
By technique scheme, fluid driver is connected between public port and passway, and reagent or water sample can be driven to flow to reaction vessel through multi-channel direction selecting valve and metering isolated tube.Because the top of reaction vessel and air communicate, in reaction vessel, the space relative atmospheric of ullage no longer has malleation or negative pressure, when fluid driver stops driving, reagent or water sample can stop flowing immediately, and the liquid level in reaction vessel also can not produce disturbance.By this, the volume of the reagent that the system that can ensure is got or water sample is accurate, and improves the measuring accuracy of system.In addition, in water quality analytical system of the present utility model, fluid driver is connected between public port and passway, the top of reaction vessel does not need sealing, the design of reaction vessel can be simplified, save design cost, and reaction vessel top does not need to connect valve and pipeline, also saves material cost.In addition, itself just ended the flowing of fluid when fluid driver does not work, be equivalent to the function of stop valve, reaction vessel bottom can be omitted in stop valve is installed.
Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is a kind of water quality analytical system structural drawing of prior art.
Fig. 2 is the structural representation of a kind of preferred implementation water quality analytical system of the utility model.
Fig. 3 is the structural representation of the another kind of preferred implementation water quality analytical system of the utility model.
Fig. 4 is a kind of frame mode of multi-channel direction selecting valve in the utility model.
Fig. 5 is the schematic diagram arranging light source and photodetector outside reaction vessel.
Fig. 6 is the schematic diagram arranging electrode pair in reaction vessel.
Fig. 7 is the schematic diagram arranging ion-selective electrode in reaction vessel.
Description of reference numerals
1 multi-channel direction selecting valve 2 measures isolated tube
3 liquid level detector 4 fluid drivers
5 reaction vessel 11 two-port valves
21 constant volume tube 22 air insulated pipes
41 stop valve 51 light sources
52 photodetector 53 electrode pairs
54 ion-selective electrode a-h distribute port
H air distributes port j passway
K public port
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
Be the structural representation of a kind of water quality analytical system of the utility model as shown in Figure 2, this water quality analytical system comprises multi-channel direction selecting valve 1, reaction vessel 5, metering isolated tube 2, liquid level detector 3 and fluid driver 4.Wherein, described multi-channel direction selecting valve 1 has public port k and multiple distribution port a-h that can alternatively be communicated with described public port k, the bottom of described reaction vessel 5 is provided with passway j, described metering isolated tube 2 is connected between described public port k and described passway j, described liquid level detector 3 is arranged in the line segments of described metering isolated tube 2, described fluid driver 4 is arranged in the pipeline of described metering isolated tube 2, and the top of described reaction vessel 5 and air communicate.The parts such as above-mentioned multi-channel direction selecting valve 1, metering isolated tube 2, fluid driver 4, reaction vessel 5 can directly be connected, and also can be connected by extra connecting pipe.
Wherein, described multi-channel direction selecting valve 1 has public port k and multiple distribution port a-h, can alternatively be communicated with described public port k, and the control as by control system realizes public port k and distributes being communicated with of port a-h with any one.According to test needs, distribute port a-h be used for respectively with the connection such as testing liquid, water sample, reagent, waste fluid container, its port number can be selected according to actual needs.As long as described multi-channel direction selecting valve 1 has a public port and multiple distribution ports that can alternatively be communicated with described public port.Such as, also the mode shown in Fig. 4 can be adopted.In Fig. 4, multi-channel direction selecting valve 1 is made up of 8 two-port valves 11 and some connecting pipes, and the two ends of each two-port valve 11 connect public port k respectively and distribute port a-h, constitute the selection valve of 8 passages.
Described reaction vessel 5 is for storing water sample, reagent etc., and these water samples and reagent react in reaction vessel 5, and passes through the correlation properties of some pick-up unit detection reaction liquid in containers.The bottom of reaction vessel 5 is provided with passway j, and described water sample, reagent etc. enter reaction vessel 5 from this passway j; With a difference of prior art be, when analytic system feed liquor or discharge opeing, the top blow-by of reaction vessel 5, but communicate with air, keep ullage in reaction vessel equal with atmospheric pressure.
Described metering isolated tube 2 is connected between described public port k and described passway j, described liquid level detector 3 is arranged in the line segments of described metering isolated tube 2, metering isolated tube 2 has predetermined volume, when liquid enters metering isolated tube 2 and arrives the position of liquid level detector 3, liquid is detected by liquid level detector 3, coherent signal is sent to control system, thus determines the liquid volume of extraction.Described metering isolated tube 2 can be a pipe joint, also can be in series by more piece pipe.
Described fluid driver 4 is arranged in the line segments of described metering isolated tube 2, namely fluid driver 4 is arranged between described public port k and described passway j, such as, fluid driver 4 can be arranged between public port k and metering isolated tube 2, or be arranged between metering isolated tube 2 and passway j, or be arranged between more piece metering isolated tube 2.When fluid driver 4 does not work, it is liquid flow in pipeline.
Preferably, described fluid driver 4 is the driver of positive and negative bi-directional drive.Adopt the driver of bi-directional drive, after water analysis completes, automatically can get rid of waste liquid, unnecessaryly set up extra device.Fluid driver 4 can adopt peristaltic pump, or is made up of ram pump and valve, can realize bi-directional drive.
Preferably, described fluid driver is peristaltic pump.During wriggling air pump inoperative, its passage is closed naturally, and its effect is equivalent to a stop valve of closing.
Preferably, described fluid driver 4 is arranged in the line segments between described liquid level detector 3 and described passway j.
Preferably, described metering isolated tube 2 comprises constant volume tube 21 and air insulated pipe 22, and described liquid level detector 3 is arranged on the connecting portion of described constant volume tube 21 and air insulated pipe 22.
Preferably, stop valve 41 is provided with between described fluid driver 4 and described passway j.Arrange stop valve 41 to be convenient to safeguard and examination and repair system.
Preferably, described multiple distribution port a-h comprises the air distribution port h of and air communication.When public port k is switched to and is communicated with described air distribution port h, can to suction air in pipeline and reaction vessel 5, to realize the liquid in metering isolated tube 2 to send into the function of reaction vessel 5, also can liquid in mixed reaction vessel 5, or detergent line.
Preferably, described liquid level detector 3 be not with the non-contact type liquid level detector of fluid contact.
Preferably, described reaction vessel 5 is the transparent vessel that plastics, quartz or glass are made.
Preferably, described constant volume tube 21 and air insulated pipe 22 are all pipes that internal diameter is less than 4 millimeters.
Preferably, described constant volume tube 21 and air insulated pipe 22 are plastics or quartzy or glass material.
Preferably, the internal diameter of described reaction vessel 5 is greater than 7 millimeters, is cylindrical container, or sectional area size equivalence but the shape in cross section is oval or the column shape container of rectangle.
Preferably, the arranged outside of described reaction vessel 5 has light source 51 and corresponding photodetector 52, after the liquid in the light transmission reaction vessel 5 that light source 51 is launched, is received, with the principle analysis sample of luminosity colorimetric by photodetector 52.
Preferably, the inside of described reaction vessel 5 is also provided with electrode pair 53, can be one or more pairs of, after reaction, analyzes sample with potentiometry when liquid enters in reaction vessel 5 or in reaction vessel 5.
Preferably, the inside of described reaction vessel 5 is also provided with one or more ion-selective electrode 54, after reaction, analyzes sample by selectivity when liquid enters in reaction vessel 5 or in reaction vessel 5 through film and potentiometry.
The course of work of the utility model water quality analytical system water sample or reagent sampling is as follows:
The first step, be switched to by multi-channel direction selecting valve 1 and distribute port to be sampled in port a-h, the public port k of multi-channel direction selecting valve 1 is connected with port to be sampled;
Second step, the work of fluid driver 4 forward drive, under the driving of fluid driver 4, the liquid that port to be sampled is corresponding is inhaled into metering isolated tube 2, when liquid level detector 3 detects that liquid reaches the position of liquid level detector 3, liquid level detector 3 sends signal, and fluid driver 4 quits work at once or quits work after time delay a period of time, in iiquid residence metering isolated tube 2 to be sampled;
3rd step, multi-channel direction selecting valve 1 is switched to air and distributes port h, and public port k and the air of multi-channel direction selecting valve 1 distribute port h and be connected;
4th step, the work of fluid driver 4 forward drive, until the liquid to be sampled rested in metering isolated tube 2 all enters in reaction vessel 5;
5th step, repeats the above-mentioned first step to the 4th step, the liquid amount on demand corresponding to same port or other port can be transported in reaction vessel 5.
The liquid volume entered in reaction vessel 5 can be regulated by the position changing not isometric metering isolated tube 2 or adjustment liquid level detector 3.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (14)
1. a water quality analytical system, comprise: multi-channel direction selecting valve (1), this multi-channel direction selecting valve (1) has public port (k) and multiple distribution ports (a-h) that alternatively can be communicated with described public port (k); Reaction vessel (5), the bottom of this reaction vessel (5) is provided with passway (j); Metering isolated tube (2), this metering isolated tube (2) is connected between described public port (k) and described passway (j); And liquid level detector (3), this liquid level detector (3) is arranged in the line segments of described metering isolated tube (2); It is characterized in that, described water quality analytical system also comprises fluid driver (4), this fluid driver (4) is arranged in the line segments of described metering isolated tube (2), and the top of described reaction vessel (5) and air communicate.
2. water quality analytical system according to claim 1, is characterized in that, the driver that described fluid driver (4) is positive and negative bi-directional drive.
3. water quality analytical system according to claim 1, is characterized in that, described fluid driver (4) is arranged in the line segments between described liquid level detector (3) and described passway (j).
4. water quality analytical system according to claim 1, it is characterized in that, described metering isolated tube (2) comprises constant volume tube (21) and air insulated pipe (22), and described liquid level detector (3) is arranged on the connecting portion of described constant volume tube (21) and air insulated pipe (22).
5. water quality analytical system according to claim 1, is characterized in that, is provided with stop valve (41) between described fluid driver (4) and described passway (j).
6. water quality analytical system according to claim 1, is characterized in that, described multiple distribution port (a-h) comprises air distribution port (h) of and air communication.
7. water quality analytical system according to claim 1, is characterized in that, described liquid level detector (3) be not with the non-contact type liquid level detector of fluid contact.
8. water quality analytical system according to claim 1, is characterized in that, the transparent vessel that described reaction vessel (5) is plastics, quartz or glass are made.
9. water quality analytical system according to claim 4, is characterized in that, described constant volume tube (21) and air insulated pipe (22) are all pipes that internal diameter is less than 4 millimeters.
10. water quality analytical system according to claim 4, is characterized in that, described constant volume tube (21) and air insulated pipe (22) are plastics, quartz or glass material.
11. water quality analytical systems according to claim 1, is characterized in that, the internal diameter of described reaction vessel (5) is greater than 7 millimeters.
12. water quality analytical systems according to claim 1, is characterized in that, the arranged outside of described reaction vessel (5) has light source (51) and corresponding photodetector (52).
13. water quality analytical systems according to claim 1, is characterized in that, the inside of described reaction vessel (5) is also provided with electrode pair (53).
14. water quality analytical systems according to claim 1, is characterized in that, the inside of described reaction vessel (5) is also provided with ion-selective electrode (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175507.6U CN204086284U (en) | 2014-04-11 | 2014-04-11 | A kind of water quality analytical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175507.6U CN204086284U (en) | 2014-04-11 | 2014-04-11 | A kind of water quality analytical system |
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| CN204086284U true CN204086284U (en) | 2015-01-07 |
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| CN201420175507.6U Expired - Lifetime CN204086284U (en) | 2014-04-11 | 2014-04-11 | A kind of water quality analytical system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730216A (en) * | 2015-04-16 | 2015-06-24 | 肖巍 | Analyzing and measuring device and liquid analyzing system |
| CN104764861A (en) * | 2015-04-16 | 2015-07-08 | 肖巍 | Analyzing and metering device and liquid analysis system |
| CN104764860A (en) * | 2015-04-16 | 2015-07-08 | 肖巍 | Analyzing and metering device and liquid analysis system |
| CN104977420A (en) * | 2014-04-11 | 2015-10-14 | 肖巍 | Water quality analytic system |
-
2014
- 2014-04-11 CN CN201420175507.6U patent/CN204086284U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977420A (en) * | 2014-04-11 | 2015-10-14 | 肖巍 | Water quality analytic system |
| CN104977420B (en) * | 2014-04-11 | 2018-01-12 | 侯文婷 | A kind of water quality analytical system |
| CN104730216A (en) * | 2015-04-16 | 2015-06-24 | 肖巍 | Analyzing and measuring device and liquid analyzing system |
| CN104764861A (en) * | 2015-04-16 | 2015-07-08 | 肖巍 | Analyzing and metering device and liquid analysis system |
| CN104764860A (en) * | 2015-04-16 | 2015-07-08 | 肖巍 | Analyzing and metering device and liquid analysis system |
| CN104730216B (en) * | 2015-04-16 | 2016-12-07 | 肖巍 | A kind of analysis metering device and liquid analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI HUAHOU TIANCHENG ENVIRONMENTAL PROTECTION SE Free format text: FORMER OWNER: XIAO WEI Effective date: 20150430 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 541004 GUILIN, GUANGXI ZHUANG AUTONOMOUS REGION TO: 056000 HANDAN, HEBEI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150430 Address after: 102, C, building 056000, building 1, small and medium-sized enterprise accelerator zone, 19 harmony street, Handan Development Zone, Hebei, China Patentee after: HEBEI HUAHOU TIANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 541004 the Guangxi Zhuang Autonomous Region mountain Guilin Qixing District Road No. 29 Building 2 unit 3 Donghui international room 3-1 Patentee before: Xiao Wei |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |