CN103447268A - Automatic sample feeder and needle bath thereof - Google Patents
Automatic sample feeder and needle bath thereof Download PDFInfo
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- CN103447268A CN103447268A CN2012101839024A CN201210183902A CN103447268A CN 103447268 A CN103447268 A CN 103447268A CN 2012101839024 A CN2012101839024 A CN 2012101839024A CN 201210183902 A CN201210183902 A CN 201210183902A CN 103447268 A CN103447268 A CN 103447268A
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- rinse bath
- needle tray
- pin
- washing
- hole
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Abstract
The invention provides an automatic sample feeder and a needle bath thereof. The needle bath comprises an inner needle bath having a needle hole and a drain end, an outer needle bath having a needle hole, and a connecting channel connected between the inner needle bath and the outer needle bath. The outer needle bath is further provided with a through hole. The upper end of the through hole is communicated with the outer needle bath. The lower end of the through hole is communicated with the outside of the needle bath. The structure of the outer needle bath is modified; accordingly, a sample needle is cleaned for a shorter time and a syringe is longer in service life.
Description
Technical field
The present invention relates to clean the device of analytical instrument sample, particularly a kind of automatic sampler and wash needle tray.
Background technology
Wash needle tray and usually be used in the chemical analysis instrument such as automatic sampler, effect is after each sample introduction completes, and cleans the residual sample on the sampling probe for drawing chemical example, thereby reduces the cross pollution produced between residual due to sample repeatedly.
As shown in Figure 1, provided the current common basic structure of washing needle tray in figure, wherein wash needle tray 1 and comprise an outer pin rinse bath 101, interior pin rinse bath 102 and connectivity slot 103, its China and foreign countries' pin rinse bath 101 is for cleaning the outer wall of sampling probe, interior pin rinse bath 102 is for cleaning the inwall of sampling probe, and connectivity slot 103 is connected between outer pin rinse bath 101 and interior pin rinse bath 102, and two grooves are communicated with.
As shown in Figure 2, the pin process of washing of washing needle tray 1 is: S1, at first sampling probe 104 inserts and washes in the interior pin rinse bath 102 of needle tray 1, syringe makes sampling probe 104 start discharge opeing, liquid wash is fallen the residual sample on sampling probe 104 inwalls, discharge from interior pin rinse bath 102, thereby complete the cleaning of sampling probe 104 inwalls; S2, sampling probe 104 inserts to be washed in the outer pin rinse bath 101 of needle tray 1, syringe makes sampling probe 104 start discharge opeing, liquid flow to the interior discharge of interior pin rinse bath 102 from connectivity slot 103 after being full of outer pin rinse bath 101, liquid is full of the outer wall that soaks and rinse sampling probe 104 in the process of outer pin rinse bath 101, reaches the purpose of cleaning sampling probe 104 outer walls.
Chemical analysis instrument when analyzing at every turn, fluid sample is drawn into the stream of analytical instrument by sampling probe 104, therefore the inner and outer wall of sampling probe 104 all can be stained with sample, if before carrying out analysis next time, the sample remained in last time on sampling probe 104 inner and outer walls is not washed in time, these residual samples will cause cross pollution with next sample so, thereby affect next analysis result.So, after having analyzed, generally all can rinse with the liquid of larger volume the inner and outer wall of sampling probe 104 at every turn.
In prior art, when cleaning sampling probe, usually adopt special-purpose high-precision quantitative syringe to advance cleaning fluid to be cleaned in sampling probe, and this will produce two problems, the one, because the internal diameter of sampling probe is very thin, if syringe to push away speed very fast, thereby will produce very large pressure and produce leakage, so the speed that pushes away of syringe needs the very low of setting, the volume flowed out from sampling probe accordingly is also just very little, and the volume of syringe is limited, the cleaning volume that cleans sampling probe is also to need to guarantee, will be very long so wash the pin time.Suppose, the flush volume that washing pin needs is the 2ml washing lotion, and the volume of syringe is 250ul, and twitching the time back and forth of syringe is 20 seconds, and the time of washing so pin is exactly 4*20 second=80 second, if it is more to wash the washing lotion that pin needs, the time of cost is just longer so; The 2nd, due to syringe to push away speed low, each liquid of releasing is just few, wholely wash the pin process so just need repeatedly pushing syringe just can complete, and the access times of a syringe is effectively, so also just greatly shortened the life-span of syringe like this.
Known on end, the needle tray of washing of the prior art, can produce two problems: 1, washing time is long, affects service efficiency; 2, shorten the service life of syringe.
Summary of the invention
In order to solve problems of the prior art, the present invention proposes a kind of needle tray of washing that the pin time is short, can extend the syringe life-span of washing.
The present invention proposes a kind of needle tray of washing of automatic sampler, comprise an interior pin rinse bath with a pin holes and a drain side, an outer pin rinse bath with a pin holes, an and connectivity slot be connected between interior pin rinse bath and outer pin rinse bath, described outer pin rinse bath also has a through hole, the upper end of described through hole is communicated with described outer pin rinse bath, and the lower end of described through hole is communicated with the described outside of washing needle tray.
Wash needle tray of the present invention, described through hole can also be positioned at the bottom of described outer pin rinse bath, and be communicated with described outer pin rinse bath straight line.
Wash needle tray of the present invention, the lower end of described through hole can also be disposed with an interconnective pipeline and a joint, and the external diameter of described pipeline is 1/16 inch, and internal diameter is 1/32 inch, and described joint is the 10-32 thread seal joint.
Wash needle tray of the present invention, the outage of described interior pin rinse bath can also be communicated with outside by the sidewall of washing needle tray, and with the angle of the pin holes of interior pin rinse bath be 85 degree.
Wash needle tray of the present invention, the pin holes of the pin holes of described interior pin rinse bath and described outer pin rinse bath can also be arranged in parallel, and the diameter of interior pin rinse bath is 1.5 times of diameter of outer pin rinse bath.
Wash needle tray of the present invention, between the pin holes that can also be connected to described outer pin rinse bath of described connectivity slot and the pin holes of described interior pin rinse bath, and be communicated with two pin holes.
Wash needle tray of the present invention, the described needle tray of washing can also be to be made by the material of organic solution corrosion.
The invention allows for a kind of automatic sampler, comprise a scavenging pump, and the needle tray of washing as above, described scavenging pump is connected with the described lower end of washing the through hole of needle tray.
The needle tray of washing of the present invention, by transforming the structure of outer pin rinse bath, not only shortened the scavenging period of sampling probe, and extended the life-span of syringe.
The accompanying drawing explanation
Fig. 1 is the structural representation of washing needle tray 1 in prior art.
Fig. 2 is the pin process of the washing schematic diagram of washing needle tray 1 in prior art.
Fig. 3 is the structural representation of washing needle tray 2 in the present invention.
Fig. 4 is the pin process of the washing schematic diagram of washing needle tray 2 in the present invention.
The specific embodiment
Introduce a preferred embodiment of the present invention below in conjunction with accompanying drawing.
With reference to figure 3, washing needle tray 2 forms by washing needle tray body 201 and washing needle tray lid 202, wherein washing needle tray body 201 consists of interior pin rinse bath 203, outer pin rinse bath 204 and connectivity slot 205, wherein interior pin rinse bath 203 consists of pin holes 208 and outage 207, and outer pin rinse bath 204 consists of pin holes 209 and through hole 206.Interior pin rinse bath 203 is for cleaning the residual sample of sampling probe inwall, and the residual liquid that will clean after the sampling probe inner and outer wall discharges, outer pin rinse bath 204 is for cleaning the residual sample of sampling probe outer wall, wherein pin holes 208 and 209 is respectively used to make sampling probe to insert interior pin rinse bath 203 and outer pin rinse bath 204, outage 207 discharges for the waste liquid by after cleaning, and through hole 206 is sent outer pin rinse bath 204 to for the cleaning fluid by outside.Connectivity slot 205 is arranged between pin holes 208 and 209, for interior pin rinse bath 203 and outer pin rinse bath 204 are communicated with.
Interior pin rinse bath 203 and outer pin rinse bath 204 are to be set in parallel in two cylindrical cell bodies washing needle tray body 201 inside, because interior pin rinse bath 203 not only is used for cleaning the inwall of sampling probe, also will be for getting rid of two waste liquids of washing needle tray, therefore need to guarantee the unobstructed of stream, so the diameter of interior pin rinse bath 203 is greater than the diameter of outer pin rinse bath 204,, in usually selecting the diameter of pin rinse bath 203 be outer pin rinse bath 204 diameter 1, more than 5 times, the guarantee stream is smooth and easy like this.The length of interior pin rinse bath 203 and outer pin rinse bath 204 is greater than sampling probe and inserts the degree of depth in sample bottle, namely is greater than the height that the sampling probe outer surface is hung liquid.
The size of connectivity slot 205 also has certain scope, because if the waste liquid that the too large outer pin rinse bath 204 of words of link slot overflows can not flow in interior pin rinse bath 203 immediately.Too little words are due to the impact of surface tension of liquid, and liquid can be gathered in water droplet of the interior formation of connectivity slot 205 and not flow down from interior pin rinse bath 203, the liquid of some large viscosity, and its water droplet can be very large, causes from washing needle tray lid 202 and overflow.
Outage 207 discharges for cleaning the waste liquid produced after sampling probe, so outage 207 has a certain degree with pin holes 208, facilitate like this waste liquid to flow out, in the present embodiment, outage 207 is communicated with outside by the sidewall of washing needle tray body 201, outage 207 is 85 degree with the angle of pin holes 208, at this moment can preferably waste liquid be discharged.
Outage 207 also can be communicated with outside by the bottom of washing needle tray body 201 for example as other, and the angle of outage 207 and pin holes 208 can be also other angles, as long as can guarantee effluent discharge.
Through hole 206 is for connecting outside scavenging pump, thereby send liquid to for cleaning the outer wall of sampling probe, the upper end of through hole 206 is connected with the bottom input 210 of outer pin rinse bath 204, and the lower end of through hole 206 is communicated with the outside of washing needle tray 2, and through hole 206 is communicated with outer pin rinse bath 204 straight lines.In the present embodiment, the lower end of through hole is disposed with an interconnective pipeline and a joint, the external diameter of pipeline is 1/16 inch, internal diameter is 1/32 inch, joint is the 10-32 thread seal joint, and pipeline is connected with the lower end of through hole 206, and the transfusion end of the scavenging pump accessed while washing pin is connected with thread seal joint, formed a straight line stream, the liquid of external like this scavenging pump can enter in outer pin rinse bath 204 faster.
As other giving an example, according to actual application needs, sometimes for more convenient design, through hole 206 possibly can't be arranged on the bottom of washing needle tray body 201, so also through hole 206 can be arranged on to the sidewall of washing needle tray body 201, now the input 210 of outer pin rinse bath 204 bottoms just needs to be connected with the transfusion end of external scavenging pump by a non-rectilinear stream, also can reach purpose of the present invention.
In the present embodiment, wash needle tray 2 and adopt the PPS(polyphenylene sulfide) plastics, its corrosion resistance is very good, and can, by injection mo(u)lding, be applicable to producing in enormous quantities manufacturing.
As other giving an example, wash needle tray 2 and also can adopt stainless steel, PEEK plastics (polyether-ether-ketone), the corrosive materials of organic solvent-resistant such as PTFE plastics (polytetrafluoroethylene (PTFE)).
With reference to figure 4, below by the step introduction, wash the process that needle tray 2 cleans sampling probe.
S1, the inwall of cleaning sampling probe 211
Pin rinse bath 203 in sampling probe 211 inserts, then fluid injector is released liquid and is made sampling probe start discharge opeing, and the inwall of sampling probe 211 is cleaned, and liquid carries the sample remained on sampling probe 211 inwalls, by outage 207, is discharged to and washes needle tray 2 outsides.
S2: the outer wall that cleans sampling probe 211
Sampling probe 211 inserts outer pin rinse bath 204, through hole 206 places are circumscribed with scavenging pump, the bottom input that scavenging pump is washed needle tray 204 by outer pin starts upwards to carry liquid, rinse the outer wall of sampling probe 211, along with increasing of liquid, liquid rises to connectivity slot 205 places, and then liquid enters into interior pin rinse bath 203 by connectivity slot 205, and the waste liquid that finally carries residual sample also is discharged to and washes needle tray 2 outsides by outage 207.
Visible, the needle tray of washing of the present invention is when cleaning the outer wall of sampling probe 211, no longer need injector delivery liquid, and adopt external scavenging pump to carry liquid, the outer wall that the liquid of scavenging pump output directly enters 204 pairs of sampling probes of outer pin rinse bath by through hole 206 is cleaned, because scavenging pump is directly carried liquid by through hole, need not be subject to again the constraint of the internal diameter of sampling probe, so faster than syringe transfusion speed, the time of therefore cleaning outer wall will shorten greatly, and then will the shortening of whole time of washing pin, and reduced the use to syringe, extended the service life of syringe.
The invention allows for a kind of automatic sampler of washing needle tray that has, comprise the needle tray 2 of washing recited above, and scavenging pump, as mentioned above, scavenging pump is connected with the thread seal joint of through hole 6 lower ends, for outside pin rinse bath 204 transport cleaning liquid when cleaning the sampling probe outer wall, in the present embodiment, what scavenging pump adopted is micro pump.
Above-described is only specific embodiments of the invention, and the protection domain be not intended to limit the present invention is within the spirit and principles in the present invention all, any modification of making, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
- An automatic sampler wash needle tray, comprise an interior pin rinse bath with a pin holes and an outage, an outer pin rinse bath with a pin holes, and a connectivity slot be connected between interior pin rinse bath and outer pin rinse bath,It is characterized in that,Described outer pin rinse bath also has a through hole, and the upper end of described through hole is communicated with described outer pin rinse bath, and the lower end of described through hole is communicated with the described outside of washing needle tray.
- 2. the needle tray of washing according to claim 1, is characterized in that, described through hole is positioned at the bottom of described outer pin rinse bath, and be communicated with described outer pin rinse bath straight line.
- 3. the needle tray of washing according to claim 1 and 2, it is characterized in that, the lower end of described through hole is disposed with an interconnective pipeline and a joint, and the external diameter of described pipeline is 1/16 inch, internal diameter is 1/32 inch, and described joint is the 10-32 thread seal joint.
- 4. the needle tray of washing according to claim 3, is characterized in that, the sidewall of the outage of described interior pin rinse bath by washing needle tray is communicated with outside, and with the angle of the pin holes of described interior pin rinse bath be 85 degree.
- 5. the needle tray of washing according to claim 4, is characterized in that, the pin holes of the pin holes of described interior pin rinse bath and described outer pin rinse bath be arranged in parallel, and the diameter of interior pin rinse bath is 1.5 times of diameter of outer pin rinse bath.
- 6. the needle tray of washing according to claim 5, is characterized in that, between the pin holes that is connected to described outer pin rinse bath of described connectivity slot and the pin holes of described interior pin rinse bath, and is communicated with two pin holes.
- 7. according to the described needle tray of washing of claim 1 or 6, it is characterized in that, the described needle tray of washing is to be made by the material of anti-organic solution corrosion.
- 8. an automatic sampler, is characterized in that, comprises a scavenging pump, and wash needle tray as claim 1 to 7 is described, and described scavenging pump is connected with the described lower end of washing the through hole of needle tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101839024A CN103447268A (en) | 2012-06-05 | 2012-06-05 | Automatic sample feeder and needle bath thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101839024A CN103447268A (en) | 2012-06-05 | 2012-06-05 | Automatic sample feeder and needle bath thereof |
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| Publication Number | Publication Date |
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| CN103447268A true CN103447268A (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101839024A Pending CN103447268A (en) | 2012-06-05 | 2012-06-05 | Automatic sample feeder and needle bath thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949436A (en) * | 2014-05-08 | 2014-07-30 | 深圳市新产业生物医学工程股份有限公司 | Ultrasonic cleaning mechanism and cleaning method for sampling pin |
| CN104049045A (en) * | 2014-05-21 | 2014-09-17 | 江苏德峰药业有限公司 | Gas phase needle maintenance method for high-viscosity or high-freezing point substances |
| CN105327891A (en) * | 2015-12-14 | 2016-02-17 | 重庆南方数控设备有限责任公司 | Needle washing device |
| CN108872357A (en) * | 2018-09-19 | 2018-11-23 | 内蒙古蒙牛乳业（集团）股份有限公司 | Mass Spectrometry detection method |
| CN109201653A (en) * | 2018-09-26 | 2019-01-15 | 苏州长光华医生物医学工程有限公司 | A kind of sample needle cleaning device |
| CN110361553A (en) * | 2019-07-22 | 2019-10-22 | 迈克医疗电子有限公司 | A kind of full-automatic sample analyser and its wash needle method |
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| US6190614B1 (en) * | 1996-04-04 | 2001-02-20 | Tosoh Corporation | Pretreatment apparatus |
| JP2003088812A (en) * | 2001-09-20 | 2003-03-25 | Furuno Electric Co Ltd | Nozzle cleaning device |
| JP2006126016A (en) * | 2004-10-29 | 2006-05-18 | Furuno Electric Co Ltd | Nozzle cleaning device, and biochemical analyzer having it |
| CN101712034A (en) * | 2009-11-27 | 2010-05-26 | 清华大学 | Cleaning device of integral sample application needles |
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Patent Citations (6)
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| US5186194A (en) * | 1990-08-24 | 1993-02-16 | Olympus Optical Co., Ltd. | Probe washing vessel |
| US6190614B1 (en) * | 1996-04-04 | 2001-02-20 | Tosoh Corporation | Pretreatment apparatus |
| JPH10267939A (en) * | 1997-03-24 | 1998-10-09 | Olympus Optical Co Ltd | Cleaning tank |
| JP2003088812A (en) * | 2001-09-20 | 2003-03-25 | Furuno Electric Co Ltd | Nozzle cleaning device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949436A (en) * | 2014-05-08 | 2014-07-30 | 深圳市新产业生物医学工程股份有限公司 | Ultrasonic cleaning mechanism and cleaning method for sampling pin |
| CN103949436B (en) * | 2014-05-08 | 2016-09-21 | 深圳市新产业生物医学工程股份有限公司 | A kind of ultrasonic cleaning organization for sample needle and cleaning method |
| CN104049045A (en) * | 2014-05-21 | 2014-09-17 | 江苏德峰药业有限公司 | Gas phase needle maintenance method for high-viscosity or high-freezing point substances |
| CN105327891A (en) * | 2015-12-14 | 2016-02-17 | 重庆南方数控设备有限责任公司 | Needle washing device |
| CN108872357A (en) * | 2018-09-19 | 2018-11-23 | 内蒙古蒙牛乳业（集团）股份有限公司 | Mass Spectrometry detection method |
| CN108872357B (en) * | 2018-09-19 | 2021-06-15 | 内蒙古蒙牛乳业（集团）股份有限公司 | Mass spectrometry detection method |
| CN109201653A (en) * | 2018-09-26 | 2019-01-15 | 苏州长光华医生物医学工程有限公司 | A kind of sample needle cleaning device |
| CN109201653B (en) * | 2018-09-26 | 2023-12-26 | 苏州长光华医生物医学工程有限公司 | Sample adding needle cleaning device |
| CN110361553A (en) * | 2019-07-22 | 2019-10-22 | 迈克医疗电子有限公司 | A kind of full-automatic sample analyser and its wash needle method |
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Effective date of registration: 20160510 Address after: 102206 Beijing City, Shahe Town, step on the river village, No. 156 Applicant after: Beijing RIGOL Science and Technology Co., Ltd. Address before: 102206 Beijing City, Shahe Town, step on the river village, No. 156 Applicant before: Beijing Rigol Technologies, Inc. |
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Effective date of registration: 20180129 Address after: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 8 215000 Applicant after: SUZHOU RIGOL PRECISION ELECTRIC TECHNOLOGIES CO., LTD. Address before: 102206 Beijing City, Shahe Town, step on the river village, No. 156 Applicant before: Beijing RIGOL Science and Technology Co., Ltd. |
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Application publication date: 20131218 |