CN101639420A - Quantitative sampling device - Google Patents
Quantitative sampling device Download PDFInfo
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- CN101639420A CN101639420A CN200910189912A CN200910189912A CN101639420A CN 101639420 A CN101639420 A CN 101639420A CN 200910189912 A CN200910189912 A CN 200910189912A CN 200910189912 A CN200910189912 A CN 200910189912A CN 101639420 A CN101639420 A CN 101639420A
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Abstract
The invention discloses a quantitative sampling device for liquid or fluid, comprising a mounting frame, an injector, a sampling valve and a displacement control mechanism, wherein the injector is fixed on the mounting frame; one valve port of the sampling valve is communicated with an injector pipeline; and the displacement control mechanism acts on a piston of the injector and controls the piston to move. The quantitative sampling device adopts the injector to quantitatively sample liquid or fluid and accurately controls the amount of the liquid or the fluid to be sampled by controlling thedisplacement distance of the piston of the injector. Compared with the prior quantitative sampling device adopting a quantitative pump or a peristaltic pump, the invention has simpler structure and can greatly improve the quantitative liquid or fluid-sampling accuracy.
Description
Technical field
The present invention relates to a kind of sampler, refer in particular to the quantitative sampling device of a kind of liquid or fluid.
Background technology
Usually, total nitrogen total phosphorus is measured and is included following steps: a, extracts sample to be determined, adds all ingredients in sample; B, in digestion pool, clear up through ultraviolet ray heating; C, carry out chemical reaction to remove unnecessary ion; D, in detection cell, detect the absorbance of sample, and with the absorbance COMPREHENSIVE CALCULATING of full scale titer and distilled water (zero point), thereby draw the pollutant levels of sample.In the mensuration process of above-mentioned total nitrogen total phosphorus, the amount that is added into the reagent in the sample to be determined must be accurately, otherwise, to have a strong impact on analytical accuracy, the quantitative sampling device that this inevitable requirement is employed to be used to add reagent must possess high precision, to measure the reagent that will add exactly.
At present, the quantitative sampling device on the market mainly contains two kinds---adopt the device of fixed displacement pump sampling and the device that adopts peristaltic pump to take a sample.Wherein, the quantitative sampling device that adopts fixed displacement pump to take a sample disposes a sensor amount of getting of reagent is controlled, to reach the purpose of quantitative sampling, the deficiency of this device is that it can only measure the reagent by sensor, in the sampling system pipeline residual reagent more, can't accomplish accurate sampling; And adopt the quantitative sampling device of peristaltic pump sampling to drive peristaltic pump by a stepper motor, and reaching the purpose of quantitative sampling by the rotating speed of control peristaltic pump, the defective of this device is to produce a stream of pulses when it operates, and is bigger to the sampling result error.
So, have and need improve, to satisfy the demand of accurate quantification sampling to the existing quantitative sampler.
Summary of the invention
The objective of the invention is to overcome the existing existing defective of quantitative sampling device, a kind of quantitative sampling device simple in structure, quantitatively accurate is provided.
For achieving the above object, the present invention adopts following technical scheme: the quantitative sampling device of a kind of liquid or fluid, include an erecting frame, a syringe, a sample valve and a displacement control gear, and wherein, described syringe is fixed on the described erecting frame; One valve port of described sample valve is communicated with described syringe pipeline; Described displacement control gear acts on the piston of described syringe and controls moving of described piston.
In the above-mentioned quantitative sampling device, arbitrary xsect of the cavity of the injection tube of described syringe is all identical.
In the above-mentioned quantitative sampling device, described displacement control gear by a stepper motor, a leading screw that is connected with described stepper motor, one and the fixing slide block and of the nut of the described leading screw driver element that is used to control described stepper motor constituted, described slide block is fixedlyed connected with the piston of described syringe.
In the above-mentioned quantitative sampling device, described leading screw is a ball-screw.
In the above-mentioned quantitative sampling device, described erecting frame is provided with a straight line guide rail, and described line slideway installs in a chute that is formed on the described slide block and described slide block can be slided along described line slideway.
In the above-mentioned quantitative sampling device, described sample valve is a multiport valve.
In the above-mentioned quantitative sampling device, the cavity of the injection tube of described syringe is cylindrical-shaped structure.
In the above-mentioned quantitative sampling device, described displacement control gear is arranged on the described erecting frame.
In the above-mentioned quantitative sampling device, described sample valve is arranged on the described erecting frame.
Beneficial effect of the present invention is: this quantitative sampling device adopts syringe that liquid or fluid are carried out quantitative sampling, the liquid that only needs the shift length of the piston by the control syringe accurately to control to take a sample or the amount of fluid, quantitative sampling device than existing employing fixed displacement pump or peristaltic pump, its structure is comparatively simple, and can improve the degree of accuracy of liquid or fluid quantitative sampling greatly.
Description of drawings
Fig. 1 is the structural representation of quantitative sampling device of the present invention.
Embodiment
For making those of ordinary skill in the art be expressly understood the purpose, technical solutions and advantages of the present invention more, the present invention is further elaborated below in conjunction with drawings and Examples.
Quantitative sampling device disclosed in this invention is configurable among the total nitrogen total phosphorus on-line monitoring system, with quantitative sampling device as reagent, apparently, the present invention does not limit and is used in the total nitrogen total phosphorus on-line monitoring system, also can apply on other check and analysis equipment, to be used for that liquid or fluid are carried out quantitative sampling.Hereinafter, apply to the total nitrogen total phosphorus on-line monitoring system with as the quantitative sampling device of reagent and be elaborated with the present invention.With reference to shown in Figure 1, related quantitative sampling device mainly includes an erecting frame 10, a syringe 20, a sample valve 30 and a displacement control gear 40, wherein, syringe 20 is fixed on the erecting frame 10, and it includes injection tube 200 and that a cavity is cylindrical-shaped structure and is sheathed on piston 202 in this injection tube 200; Sample valve 30 is fixed on the described erecting frame 10, one valve port and this syringe 20 pipeline connections; Displacement control gear 40 is arranged on this erecting frame 10, and it acts on the piston 202 of described syringe 20 and controls the displacement of this piston 202, thereby but makes injection tube 200 suction or release the reagent that need be added in the detected sample.During work, the syringe 20 of quantitative sampling device has the container pipeline connection of reagent with savings by sample valve 30, the piston 202 that drives syringe 20 by displacement control gear 40 moves down, go in the syringe 20 and extract reagent, and then by the displacement control gear 40 reverse pistons 202 that drive, and the reagent in the syringe 20 is injected specified containers.Because quantitative sampling device of the present invention adopts syringe 20 to take a sample, only need can accurately be controlled the amount of the reagent that will take a sample by the shift length of the piston 202 of control syringe 20, quantitative sampling device than existing employing fixed displacement pump or peristaltic pump, its structure is comparatively simple, and can improve the degree of accuracy of sampling greatly.
Really, the injection tube 200 of syringe 20 is not limited to structure mentioned above, also can adopt the injection tube that is the other types of regular polygon structure such as cavity.Usually, injection tube 200 requires to adopt all identical injection tube of arbitrary xsect of its cavitys, is convenient to the amount that displacement by piston 202 determines the reagent that will take a sample.
Ideally, sample valve 30 adopts multiport valve, and can carry out quantitative sampling to various reagent respectively.
Preferably, erecting frame 10 is provided with a straight line guide rail 50, and a chute is set on slide block 406, line slideway 50 installs in described chute this slide block 406 can be slided along this line slideway 50, the location that not only helps this slide block 406, and can make the motion of slide block 406 more steady, and then can drive the piston 202 of syringe 20 reposefully.
In sum, the quantitative sampling device of liquid disclosed in this invention or fluid, it adopts syringe that liquid or fluid are carried out quantitative sampling, quantitative sampling device than existing employing fixed displacement pump or peristaltic pump, its structure is comparatively simple, and can improve the degree of accuracy of liquid or fluid quantitative sampling greatly.
The above only is the preferred embodiments of the present invention, but not the present invention is done any pro forma restriction.Those skilled in the art can impose various changes that are equal to and improvement on the basis of the foregoing description, all equivalent variations or modifications of being done in the claim scope all should fall within protection scope of the present invention.
Claims (9)
1, the quantitative sampling device of a kind of liquid or fluid is characterized in that, described quantitative sampling device includes:
One erecting frame (10);
One syringe (20), it is fixed on the described erecting frame (10);
One sample valve (30), one valve port and described syringe (20) pipeline connection;
One displacement control gear (40), it acts on the piston (202) of described syringe (20) and controls moving of described piston (202).
2, quantitative sampling device as claimed in claim 1 is characterized in that, arbitrary xsect of the cavity of the injection tube (200) of described syringe (20) is all identical.
3, quantitative sampling device as claimed in claim 2, it is characterized in that, described displacement control gear (40) by a stepper motor (400), a leading screw (402) that is connected with described stepper motor (400), one and the fixing slide block (406) and of the nut (404) of described leading screw (402) driver element that is used to control described stepper motor (400) constituted, described slide block (406) is fixedlyed connected with the piston (202) of described syringe (20).
4, quantitative sampling device as claimed in claim 3 is characterized in that, described leading screw (402) is a ball-screw.
5, as claim 3 or 4 described quantitative sampling devices, it is characterized in that, described erecting frame (10) is provided with a straight line guide rail (50), and described line slideway (50) installs in a chute that is formed on the described slide block (406) and described slide block (406) can be slided along described line slideway (50).
6, as claim 1 or 2 or 3 or 4 described quantitative sampling devices, it is characterized in that described sample valve (30) is a multiport valve.
7, quantitative sampling device as claimed in claim 2 is characterized in that, the cavity of the injection tube (200) of described syringe (20) is cylindrical-shaped structure.
8, as claim 1 or 2 or 3 or 4 described quantitative sampling devices, it is characterized in that described displacement control gear (40) is arranged on the described erecting frame (10).
9, as claim 1 or 2 or 3 or 4 described quantitative sampling devices, it is characterized in that described sample valve (30) is arranged on the described erecting frame (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189912A CN101639420A (en) | 2009-08-31 | 2009-08-31 | Quantitative sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189912A CN101639420A (en) | 2009-08-31 | 2009-08-31 | Quantitative sampling device |
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| CN101639420A true CN101639420A (en) | 2010-02-03 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915683A (en) * | 2010-08-11 | 2010-12-15 | 湖南力合科技发展有限公司 | Metering device |
| CN102179480A (en) * | 2010-11-25 | 2011-09-14 | 苏州苏铸成套装备制造有限公司 | Resin quantification device |
| CN102419377A (en) * | 2011-08-18 | 2012-04-18 | 北京国科华仪科技有限公司 | Sampling device for automatic immunization system and sampling method |
| CN102866039A (en) * | 2012-10-07 | 2013-01-09 | 哈尔滨辰能工大环保科技股份有限公司 | Novel sampling device and sampling method for online COD (chemical oxygen demand) measurement |
| CN102928189A (en) * | 2012-05-25 | 2013-02-13 | 中国科学院力学研究所 | Experimental device for reducing heat flow rate by applying local reverse overflow of aircraft |
| CN103197620A (en) * | 2013-02-28 | 2013-07-10 | 重庆大学 | Precise sampling control system |
| CN103207099A (en) * | 2013-03-25 | 2013-07-17 | 苏州聚阳环保科技有限公司 | Stepping motor based automatic sampling system |
| CN106872622A (en) * | 2017-02-06 | 2017-06-20 | 国网山东省电力公司招远市供电公司 | A kind of oil sample chromatography quantitative sampling device with dust plug |
| CN107314738A (en) * | 2017-06-13 | 2017-11-03 | 中国科学院力学研究所 | The thick measurement experiment system of hypersonic overflow liquid film cooling film and data processing method |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
| CN111265186A (en) * | 2020-03-23 | 2020-06-12 | 华中科技大学 | Quantitative pressurization and detection device for intraocular pressure monitoring |
| CN111474003A (en) * | 2020-01-17 | 2020-07-31 | 杭州腾海科技有限公司 | Water quality flux monitoring buoy system |
-
2009
- 2009-08-31 CN CN200910189912A patent/CN101639420A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915683B (en) * | 2010-08-11 | 2013-06-19 | 力合科技（湖南）股份有限公司 | Metering device |
| CN101915683A (en) * | 2010-08-11 | 2010-12-15 | 湖南力合科技发展有限公司 | Metering device |
| CN102179480A (en) * | 2010-11-25 | 2011-09-14 | 苏州苏铸成套装备制造有限公司 | Resin quantification device |
| CN102419377A (en) * | 2011-08-18 | 2012-04-18 | 北京国科华仪科技有限公司 | Sampling device for automatic immunization system and sampling method |
| CN102419377B (en) * | 2011-08-18 | 2013-04-03 | 北京国科华仪科技有限公司 | Sampling device for automatic immunization system and sampling method |
| CN102928189A (en) * | 2012-05-25 | 2013-02-13 | 中国科学院力学研究所 | Experimental device for reducing heat flow rate by applying local reverse overflow of aircraft |
| CN102866039B (en) * | 2012-10-07 | 2017-07-04 | 哈尔滨辰能工大环保科技股份有限公司 | COD on-line measurement novel sampling devices |
| CN102866039A (en) * | 2012-10-07 | 2013-01-09 | 哈尔滨辰能工大环保科技股份有限公司 | Novel sampling device and sampling method for online COD (chemical oxygen demand) measurement |
| CN103197620A (en) * | 2013-02-28 | 2013-07-10 | 重庆大学 | Precise sampling control system |
| CN103207099A (en) * | 2013-03-25 | 2013-07-17 | 苏州聚阳环保科技有限公司 | Stepping motor based automatic sampling system |
| CN106872622A (en) * | 2017-02-06 | 2017-06-20 | 国网山东省电力公司招远市供电公司 | A kind of oil sample chromatography quantitative sampling device with dust plug |
| CN106872622B (en) * | 2017-02-06 | 2020-12-08 | 嘉兴市大明实业有限公司 | Oil sample chromatographic analysis quantitative sampling device with dustproof plug |
| CN107314738A (en) * | 2017-06-13 | 2017-11-03 | 中国科学院力学研究所 | The thick measurement experiment system of hypersonic overflow liquid film cooling film and data processing method |
| CN107314738B (en) * | 2017-06-13 | 2019-08-30 | 中国科学院力学研究所 | Hypersonic overflow liquid film cooling film thickness measurement experiment system and data processing method |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
| CN111474003A (en) * | 2020-01-17 | 2020-07-31 | 杭州腾海科技有限公司 | Water quality flux monitoring buoy system |
| CN111265186A (en) * | 2020-03-23 | 2020-06-12 | 华中科技大学 | Quantitative pressurization and detection device for intraocular pressure monitoring |
| CN111265186B (en) * | 2020-03-23 | 2021-12-03 | 华中科技大学 | Quantitative pressurization and detection device for intraocular pressure monitoring |
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Application publication date: 20100203 |