CN105547763A - Double-one-way-valve sampling needle and sampling method thereof - Google Patents

Double-one-way-valve sampling needle and sampling method thereof Download PDF

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Publication number
CN105547763A
CN105547763A CN201610062491.1A CN201610062491A CN105547763A CN 105547763 A CN105547763 A CN 105547763A CN 201610062491 A CN201610062491 A CN 201610062491A CN 105547763 A CN105547763 A CN 105547763A
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CN
China
Prior art keywords
sampling
sample
piston
valve
syringe
Prior art date
Application number
CN201610062491.1A
Other languages
Chinese (zh)
Inventor
王伟
林萍
马丽红
Original Assignee
福州大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 福州大学 filed Critical 福州大学
Priority to CN201610062491.1A priority Critical patent/CN105547763A/en
Publication of CN105547763A publication Critical patent/CN105547763A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1418Depression, aspiration
    • G01N2001/1427Positive displacement, piston, peristaltic

Abstract

The invention relates to a double-one-way-valve sampling needle and a sampling method thereof. The sampling needle comprises a sampling needle tube, wherein a piston tightly attached to the inner wall of the needle tube is arranged in the sampling needle tube; the back end of the piston is connected with a piston handle shaft with scales; the piston handle shaft drives the piston to forwards and backwards move; the side wall of the front part of the sampling needle tube is provided with a sampling inlet; the inner wall of the sampling needle tube is provided with a sampling valve in the position of the sampling inlet; the front end of the sampling needle tube is provided with a forwards extending sample outlet head; a sampling outlet communicated with the needle tube and the sample outlet head is formed in the side wall of the front end of the sampling needle tube; the outer wall of the sampling needle tube is provided with a sample outlet valve in the position of the sampling outlet; the front end of the sample outlet head is provided with a sample outlet. The double-one-way-valve sampling needle has the advantages that the samples in a container can be conveniently sampled in real time; the sampling volume can be precisely controlled; the sample solution is not diluted during the sampling, so that the analysis is convenient; the sample sampling process is simple and automatic; a sampling passage cannot be easily blocked; a sample solution can be conveyed out in many angles in an antigravity way.

Description

Double check valve sampling probe and sampling method thereof

Technical field

The present invention relates to a kind of double check valve sampling probe and sampling method thereof.

Background technology

In traditional sample solution sampling process, be generally adopt independent sample pin, from solution, then pipette samples is transferred in container and is analyzed.The vibrations of container may be caused in this process, the carrying out of impact experiment.This sampling mode automaticity is step by step lower simultaneously, is unfavorable for the robotization of sample analysis and quick, high throughput analysis.Because operation steps is more, when sampling, sometimes because delaying on the running time, the time making sampling not in time, can not obtain the sample of particular point in time.

More common real time sample mode is at present: allow a pipeline flow through container to be sampled, the pipeline be immersed in container has opening, when another kind of solution flows in pipeline, the sample solution in container can be driven to flow out together from same pipeline.The sampling defect of this mode is that the sample solution obtained have passed through dilution, is unfavorable for the detection of sample solution.Also have plenty of to adopt and directly punch on container, access conduit, take the mode of solution in real time, the defect of this mode is that sample volume cannot accurately control, the pipeline sampled in addition blocks sometimes, when such as sampling the liquid in microorganism culture vessel, microorganism will breed and cause blocking in pipeline.

It is less that sample solution can export by sampler from different perspectives that reported at present, and such as antigravity to be hoisted output by low liquid level, and the container of this sample mode to particular design seems particularly important.

Summary of the invention

In view of the deficiencies in the prior art, technical matters to be solved by this invention is to provide a kind of can sampling the sample in container easily in real time, and accurately can control sample volume, during sampling, sample solution is without dilution so that analyze, sample process is simply automatic, sampling passage is not easy blocking, can export to multi-angle antigravity double check valve sampling probe and the sampling method thereof of sample solution.

In order to solve the problem, a technical scheme of the present invention is: a kind of double check valve sampling probe, comprise sampling syringe, the piston being close to syringe inwall is provided with in described sampling syringe, described piston rear end is connected with the piston arbor with a scale that driven plunger seesaws, described sampling syringe toe lateral wall offers sampling import, described sampling syringe inwall is provided with sample introduction valve in sampling inflow point, described sampling syringe front end be provided with extend forward go out sample head, described sampling syringe front end side wall offers and is communicated with syringe and the sampling outlet going out sample head, described sampling probe drum outer wall is provided with sample output valve door at sampling outlet place, described go out sample head front end offer outlet.

Preferably, described syringe inwall be provided be positioned at sampling valve behind the door limit and positioning piston motion piston nose pile.

Preferably, the length of described sample introduction valve is less than the internal diameter of syringe.

Preferably, the distance between described sample introduction valve and sample output valve door is 1 ~ 5mm.

Preferably, described sample introduction valve and sample output valve door all adopt elastic sheet rubber to make.

In order to solve the problem, another technical scheme of the present invention is: a kind of sampling method of double check valve sampling probe: first pull piston to move backward by piston arbor with a scale, use sample valve closing, sample introduction valve open, solution flows in syringe; In piston drawing solution process, by the volume of the accurate Quality control solution of the scale on piston arbor with a scale; Suction sample is complete, then by piston handle axle pushed forward piston with a scale, make sample introduction valve closing, sample output valve door is opened, and sample solution flows to out sample head from sampling syringe through sampling outlet, finally flows out from outlet.

Compared with prior art, the present invention has following beneficial effect: this sampling probe accurately can control sample volume, and can sample the sample in container easily in real time, during sampling, sample solution is without dilution, is convenient to the examination and analysb of sample.Sample process is simply automatic, and sampling passage is not easy blocking.Even antigravity sample solution can be exported from different angles.The sampling probe be fixed in container is comparatively gentle in sampling process, and can not interrupt the reaction in container, sampling process is extremely rapid.The designing and making process of sampling probe is simple, is easy to realize and cheap.

Accompanying drawing explanation

Fig. 1 is the structural representation of double check valve sampling probe.

Fig. 2 is the sample introduction schematic diagram of double check valve sampling probe.

Fig. 3 be double check valve sampling probe go out sample schematic diagram.

Fig. 4 is that double check valve sampling probe level in container fixes schematic diagram.

Fig. 5 is double check valve sampling probe vertical fixing schematic diagram in container.

Mark in figure: 100-double check valve sampling probe, 110-samples syringe, and 111-samples import, 112-sampling outlet, 120-piston, 130-piston arbor with a scale, 140-sample introduction valve, 150-goes out sample head, 151-outlet, 160-sample output valve door, 170-piston nose pile, 200-container.

Embodiment

In order to allow above-mentioned feature and advantage of the present invention become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.

As shown in Fig. 1 ~ 3, a kind of double check valve sampling probe 100, comprise sampling syringe 110, the piston 120 being close to syringe 110 inwall is provided with in described sampling syringe 110, described piston 120 rear end is connected with the piston arbor 130 with a scale that driven plunger 120 seesaws, the anterior sidewall of described sampling syringe 110 offers sampling import 111, described sampling syringe 110 inwall is provided with sample introduction valve 140 at sampling import 111 place, described sampling syringe 110 front end be provided with extend forward go out sample head 150, described sampling syringe 110 front end side wall offers and is communicated with syringe 110 and the sampling outlet 112 going out sample head 150, described sampling syringe 110 outer wall is provided with sample output valve door 160 at sampling outlet 112 place, described go out sample head 150 front end offer outlet 151.

In embodiments of the present invention, carry out position cross front and damage sample introduction valve 140 to prevent piston 120, described syringe 110 inwall is provided with and is positioned at sample introduction valve 140 back and the piston nose pile 170 that moves of positioning piston 120.

In embodiments of the present invention, be stuck when sample introduction valve 140 is opened, the length of described sample introduction valve 140 is less than the internal diameter of syringe 110.

In embodiments of the present invention, in order to prevent the sample volume of previous sample introduction from too much remaining in sampling syringe 110, the distance between described sample introduction valve 140 and sample output valve door 160 is as far as possible short, is generally 1 ~ 5mm.

In embodiments of the present invention, described sample introduction valve 140 and sample output valve door 160 all adopt elastic sheet rubber to make, and are fixed on barrel; The method of cutting syringe 110, mounted valve involution again is again adopted when making valve.Described sampling syringe 110, piston 120 and piston arbor 130 with a scale can adopt conventional material to make, and such as sampling syringe 110 and piston arbor 130 with a scale adopt PP material to make, and piston 120 adopts PE material to make.

As shown in Fig. 1 ~ 3, a kind of sampling method of double check valve sampling probe: first pull piston 120 to move backward by piston arbor 130 with a scale, use sample valve 160 and close, sample introduction valve 140 is opened, and solution flows in syringe 110; In piston 120 drawing solution process, by the volume of the accurate Quality control solution of the scale on piston arbor 130 with a scale; Suction sample is complete, then by piston arbor 130 pushed forward piston 120 with a scale, sample introduction valve 140 is closed, and sample output valve door 160 is opened, and sample solution flows to out sample head 150 from sampling syringe 110 through sampling outlet 112, finally flows out from outlet 151.

During practical application, double check valve sampling probe 100 is fixed on the inside of container 200, because double check valve sampling probe 100 is integrated with two orthogonal one-way cocks, double check valve sampling probe 100 outwards can carry sample solution from different perspectives, as level sampling or the sample of conveying straight up of antigravity.

The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of double check valve sampling probe and sampling methods thereof under enlightenment of the present invention.All equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (6)

1. a double check valve sampling probe, it is characterized in that: comprise sampling syringe, the piston being close to syringe inwall is provided with in described sampling syringe, described piston rear end is connected with the piston arbor with a scale that driven plunger seesaws, described sampling syringe toe lateral wall offers sampling import, described sampling syringe inwall is provided with sample introduction valve in sampling inflow point, described sampling syringe front end be provided with extend forward go out sample head, described sampling syringe front end side wall offers and is communicated with syringe and the sampling outlet going out sample head, described sampling probe drum outer wall is provided with sample output valve door at sampling outlet place, described go out sample head front end offer outlet.
2. double check valve sampling probe according to claim 1, is characterized in that: described syringe inwall be provided be positioned at sampling valve behind the door limit and positioning piston motion piston nose pile.
3. double check valve sampling probe according to claim 1, is characterized in that: the length of described sample introduction valve is less than the internal diameter of syringe.
4. double check valve sampling probe according to claim 1, is characterized in that: the distance between described sample introduction valve and sample output valve door is 1 ~ 5mm.
5. double check valve sampling probe according to claim 1, is characterized in that: described sample introduction valve and sample output valve door all adopt elastic sheet rubber to make.
6. a sampling method for the double check valve sampling probe according to any one of claim 1 to 5, is characterized in that: first pull piston to move backward by piston arbor with a scale, use sample valve closing, sample introduction valve open, solution flows in syringe; In piston drawing solution process, by the volume of the accurate Quality control solution of the scale on piston arbor with a scale; Suction sample is complete, then by piston handle axle pushed forward piston with a scale, make sample introduction valve closing, sample output valve door is opened, and sample solution flows to out sample head from sampling syringe through sampling outlet, finally flows out from outlet.
CN201610062491.1A 2016-01-29 2016-01-29 Double-one-way-valve sampling needle and sampling method thereof CN105547763A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105890928A (en) * 2016-06-08 2016-08-24 中国长城葡萄酒有限公司 Large-container raw wine quantitative-positioning sampling device
CN108760398A (en) * 2018-05-22 2018-11-06 河海大学 A kind of antifouling water sampling device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158081Y (en) * 1992-12-12 1994-03-02 李东方 Multi-function sampler for liquid
US5607395A (en) * 1995-02-02 1997-03-04 Ragsdale; Ronald Device for remote injection of animals
CN1251049A (en) * 1997-03-29 2000-04-19 朴志勲 Continuous injecting apparatus
DE102008003762A1 (en) * 2008-01-10 2009-07-23 Kurt Harrand Pimple sucker for sucking e.g. acne pimple, in face of body, has syringe of piston with fingers and/or handle in base for sucking, against which hand heel or thumb is pulled, and lip lens fixed with help of cross threads or centering aid
CN204202952U (en) * 2014-11-17 2015-03-11 成都蓝宇科维科技有限公司 A kind of portative gas sampler
CN204247244U (en) * 2014-11-10 2015-04-08 南阳医学高等专科学校第一附属医院 A kind of inspection syringe
CN204247246U (en) * 2014-11-25 2015-04-08 湖北职业技术学院 The quantitative liquid-transfering device of use for laboratory
CN204543206U (en) * 2015-03-20 2015-08-12 黄炳江 A kind of Anesthesia Department injection device
CN204831844U (en) * 2015-08-04 2015-12-02 兰州连华环保科技有限公司 Liquid proportional sampling device with adjustable
CN105223041A (en) * 2015-11-03 2016-01-06 山东省农业科学院农业质量标准与检测技术研究所 A kind of fluid sample sampler for examining sample detection soon and method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158081Y (en) * 1992-12-12 1994-03-02 李东方 Multi-function sampler for liquid
US5607395A (en) * 1995-02-02 1997-03-04 Ragsdale; Ronald Device for remote injection of animals
CN1251049A (en) * 1997-03-29 2000-04-19 朴志勲 Continuous injecting apparatus
DE102008003762A1 (en) * 2008-01-10 2009-07-23 Kurt Harrand Pimple sucker for sucking e.g. acne pimple, in face of body, has syringe of piston with fingers and/or handle in base for sucking, against which hand heel or thumb is pulled, and lip lens fixed with help of cross threads or centering aid
CN204247244U (en) * 2014-11-10 2015-04-08 南阳医学高等专科学校第一附属医院 A kind of inspection syringe
CN204202952U (en) * 2014-11-17 2015-03-11 成都蓝宇科维科技有限公司 A kind of portative gas sampler
CN204247246U (en) * 2014-11-25 2015-04-08 湖北职业技术学院 The quantitative liquid-transfering device of use for laboratory
CN204543206U (en) * 2015-03-20 2015-08-12 黄炳江 A kind of Anesthesia Department injection device
CN204831844U (en) * 2015-08-04 2015-12-02 兰州连华环保科技有限公司 Liquid proportional sampling device with adjustable
CN105223041A (en) * 2015-11-03 2016-01-06 山东省农业科学院农业质量标准与检测技术研究所 A kind of fluid sample sampler for examining sample detection soon and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105890928A (en) * 2016-06-08 2016-08-24 中国长城葡萄酒有限公司 Large-container raw wine quantitative-positioning sampling device
CN108760398A (en) * 2018-05-22 2018-11-06 河海大学 A kind of antifouling water sampling device

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Application publication date: 20160504