CN102692257A - Pneumatic liquid quantifying method and device thereof - Google Patents
Pneumatic liquid quantifying method and device thereof Download PDFInfo
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- CN102692257A CN102692257A CN2012101870559A CN201210187055A CN102692257A CN 102692257 A CN102692257 A CN 102692257A CN 2012101870559 A CN2012101870559 A CN 2012101870559A CN 201210187055 A CN201210187055 A CN 201210187055A CN 102692257 A CN102692257 A CN 102692257A
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Abstract
The invention provides a pneumatic liquid quantifying device. The pneumatic liquid quantifying device is characterized by comprising a container for containing liquid, a closed liquid quantifying cup, an air pump, a liquid inlet valve, and a liquid outlet valve, wherein the air pump is connected with the closed liquid quantifying cup through an air inlet and outlet pipe; the distance between a liquid inlet pipe built in the closed liquid quantifying cup and the bottom of the cup is a quantified; the liquid inlet pipe built in the closed liquid quantifying cup is connected with a pipeline inserted into the liquid in the container through the liquid inlet valve; and the liquid outlet valve is formed on the pipeline connected with the bottom of the closed liquid quantifying cup. A pneumatic liquid quantifying method is used for finishing liquid feeding, quantifying and liquid discharging processes by virtual of power of the air pump under the action of an alternative switch of the liquid inlet valve and the liquid outlet valve; the method is easy to implement; the work is reliable, and easy to regulate and calibrate; because the liquid and air have the washing function to the pipeline in the pneumatic process, the retardation and residue are reduced; and the method is suitable for quantifying corrosive liquid and unclean liquid.
Description
Technical field
The present invention relates to chemical analysis field, is a kind of Pneumatic liquid quantivative approach and device thereof.
Technical background
The quantitative problem that all has sample, medicament in fields such as chemical analyses, the existing conventional method is to use volume pump, for example peristaltic pump, membrane pump etc.The problem that exists is that measuring accuracy is low, peristaltic tube easy abrasion, the back-stop mechanism leakiness of membrane pump.Particularly 1: do not have suitable volume pump optional for tens liquor capacities to the hundreds of milliliter; 2:, use volume pump to be out of order easily for the non-clean water that suspension and silt are arranged.
Summary of the invention
One of the object of the invention provide a kind of method simple, be suitable for, quantitative Pneumatic liquid quantivative approach accurately, two of goal of the invention is that quantitatively used device of Pneumatic liquid is provided.
Pneumatic liquid quantivative approach of the present invention is characterized in that, it comprises following content:
A) feed liquor process:
With the feed liquor opening of valves; Tapping valve is closed, and the air pump forward rotation is extracted the air in the closed liquid quantitative cup out through air inlet-outlet pipe; The cup-shaped one-tenth vacuum of closed liquid quantitative; Atmospheric pressure with liquid from container in feed tube is pressed into closed liquid quantitative cup, when liquid level was higher than the feed tube lower end in closed liquid quantitative cup, air pump cut out;
B) quantitative process
With the feed liquor opening of valves, tapping valve is closed, the air pump backward rotation; Air pump charges into air through air inlet-outlet pipe in closed liquid quantitative cup; Gaseous tension in the closed liquid quantitative cup is higher than atmospheric pressure, and the liquid in the closed liquid quantitative cup is in feed tube returns container, and the liquid level in closed liquid quantitative cup drops to till the feed tube lower surface is concordant; Air pump cuts out, and accomplishes the quantitative of liquid;
C) discharge opeing process
The feed liquor valve cuts out, and tapping valve is opened, and air pump continues backward rotation, in closed liquid quantitative cup, charges into air through air inlet-outlet pipe, and liquid is discharged through discharging tube under the gaseous tension effect.
Pneumatic liquid proportioning device of the present invention; It is characterized in that; It comprises: the container of carrying liquid, closed liquid quantitative cup, air pump, feed liquor valve and tapping valve; Described air pump is connected with closed liquid quantitative cup through air inlet-outlet pipe; The built-in feed tube of closed liquid quantitative cup is quantitative height at the bottom of its glass, the built-in feed tube of closed liquid quantitative cup is connected with pipeline in inserting in vessel liquid through the feed liquor valve, on the discharging tube that connects in closed liquid quantitative cup bottom tapping valve is set.
The present invention by means of a pneumatic pump liquid quantitative methods of power, the intake valve and exhaust valve alternating switching action, the completion of the inlet - quantitative - draining process, quantitative liquid in a closed cross-section of a certain cup body the case of the quantitative volume of the inlet tube by the size from the bottom of the cup height determines quantitative, can be adjusted once quantitation fixed height, the same time the volume of liquid discharged, quantitative accuracy, and the size of the cross-sectional area of the cup body , the method is easy to implement, reliable, easy to adjust and calibrate Since aerodynamic processes for liquid and gas pipelines are scouring action reduces the block and residues, suitable for corrosive liquids, non-clean liquid quantitative applications.
Pneumatic liquid proportioning device of the present invention simple in structure made easily, and cost is low, long service life.
Description of drawings
Fig. 1 is a Pneumatic liquid proportioning device structural representation;
Fig. 2 is the discharge opeing process synoptic diagram of Pneumatic liquid quantivative approach;
Fig. 3 is the quantitative process synoptic diagram of Pneumatic liquid quantivative approach;
Fig. 4 is the discharge opeing process synoptic diagram of Pneumatic liquid quantivative approach.
Among the figure: 1 feed tube, 2 air inlet-outlet pipes, 3 discharging tubes, 4 closed liquid quantitative cups, 5 feed liquor valves, 6 tapping valves, 7 containers, 8 air pumps.
Embodiment
Utilize accompanying drawing and embodiment that Pneumatic liquid proportioning device of the present invention is further described below.
With reference to Fig. 1; Pneumatic liquid proportioning device of the present invention comprises: the container 7 of carrying liquid, closed liquid quantitative cup 4, air pump 8, feed liquor valve 5 and tapping valve 6; Described air pump 8 is connected with closed liquid quantitative cup 4 through air inlet-outlet pipe 2; Closed liquid quantitative cup 4 built-in feed tubes 1 are quantitative height at the bottom of its glass; The built-in feed tube 1 of closed liquid quantitative cup 4 is connected with pipeline in inserting in container 7 liquid through feed liquor valve 5, on the discharging tube 3 that connects in closed liquid quantitative cup 4 bottoms tapping valve 6 is set.
With reference to Fig. 1 and 2, the feed liquor process of Pneumatic liquid quantivative approach: feed liquor valve 5 is opened, and tapping valve 6 is closed; Air pump 8 forward rotation; Air in the closed liquid quantitative cup 4 are extracted out through air inlet-outlet pipe 2, and closed liquid quantitative cup 4 forms vacuum, atmospheric pressure with liquid from container 7 in feed tube 1 is pressed into closed liquid quantitative cup 4; When liquid level was higher than feed tube 1 lower end in closed liquid quantitative cup 4, air pump 8 cut out.
With reference to Fig. 1 and 3; The quantitative process of Pneumatic liquid quantivative approach: feed liquor valve 5 is opened, and tapping valve 6 is closed, air pump 8 backward rotation; Air pump 8 charges into air through air inlet-outlet pipe 2 in closed liquid quantitative cup 4; Gaseous tensions in the closed liquid quantitative cup 4 are higher than atmospheric pressure, the liquid in the closed liquid quantitative cup 4 in feed tube 1 returns container 7, up to
Liquid levels in the closed liquid quantitative cup 4 drop to till feed tube 1 lower surface is concordant, and air pump 8 cuts out, accomplish liquid quantitatively;
With reference to Fig. 1 and 4; The Pneumatic liquid quantivative approach the discharge opeing process: feed liquor valve 5 cuts out, and tapping valve 6 is opened, and air pump 8 continues backward rotation; In closed liquid quantitative cup 4, charge into air through air inlet-outlet pipe 2, liquid is discharged through discharging tube 3 under the gaseous tension effect.
Claims (2)
1. a Pneumatic liquid quantivative approach is characterized in that, it comprises following content:
A) feed liquor process:
With the feed liquor opening of valves; Tapping valve is closed, and the air pump forward rotation is extracted the air in the closed liquid quantitative cup out through air inlet-outlet pipe; The cup-shaped one-tenth vacuum of closed liquid quantitative; Atmospheric pressure with liquid from container in feed tube is pressed into closed liquid quantitative cup, when liquid level was higher than the feed tube lower end in closed liquid quantitative cup, air pump cut out;
B) quantitative process
With the feed liquor opening of valves, tapping valve is closed, the air pump backward rotation; Air pump charges into air through air inlet-outlet pipe in closed liquid quantitative cup; Gaseous tension in the closed liquid quantitative cup is higher than atmospheric pressure, and the liquid in the closed liquid quantitative cup is in feed tube returns container, and the liquid level in closed liquid quantitative cup drops to till the feed tube lower surface is concordant; Air pump cuts out, and accomplishes the quantitative of liquid;
C) discharge opeing process
The feed liquor valve cuts out, and tapping valve is opened, and air pump continues backward rotation, in closed liquid quantitative cup, charges into air through air inlet-outlet pipe, and liquid is discharged through discharging tube under the gaseous tension effect.
2. the device of Pneumatic liquid quantivative approach according to claim 1; It is characterized in that; It comprises: the container of carrying liquid, closed liquid quantitative cup, air pump, feed liquor valve and tapping valve; Described air pump is connected with closed liquid quantitative cup through air inlet-outlet pipe; The built-in feed tube of closed liquid quantitative cup is quantitative height at the bottom of its glass, the built-in feed tube of closed liquid quantitative cup is connected with pipeline in inserting in vessel liquid through the feed liquor valve, on the discharging tube that connects in closed liquid quantitative cup bottom tapping valve is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210187055 CN102692257B (en) | 2012-06-08 | 2012-06-08 | Pneumatic liquid quantifying method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210187055 CN102692257B (en) | 2012-06-08 | 2012-06-08 | Pneumatic liquid quantifying method and device thereof |
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| CN102692257A true CN102692257A (en) | 2012-09-26 |
| CN102692257B CN102692257B (en) | 2013-12-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267551A (en) * | 2013-05-10 | 2013-08-28 | 湖北博凡生物科技有限公司 | Precise measuring device with changeable volume |
| CN104030218A (en) * | 2013-03-08 | 2014-09-10 | 安派科生物医学科技（丽水）有限公司 | Pipetting device |
| CN104347338A (en) * | 2013-08-01 | 2015-02-11 | 中微半导体设备(上海)有限公司 | Cooling liquid processing system of plasma processing device and method thereof |
| CN104344863A (en) * | 2013-07-29 | 2015-02-11 | 株式会社堀场制作所 | Measuring apparatus of liquid and apparatus for analyzing water quality |
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105466515A (en) * | 2016-01-12 | 2016-04-06 | 成都市天仁自动化科技有限公司 | Measuring-glass type outlet liquor measuring system of automatic liquor selling machine and measuring method thereof |
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| CN101629839A (en) * | 2009-08-25 | 2010-01-20 | 杨斌 | Quick metering and dispensing device and method thereof for liquid spices |
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| CN102211000A (en) * | 2011-06-09 | 2011-10-12 | 无锡国赢科技有限公司 | Quantifying liquid-discharging structure with middle exhaust pipe |
| CN202693598U (en) * | 2012-06-08 | 2013-01-23 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying device |
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| EP1169621A1 (en) * | 1999-04-07 | 2002-01-09 | Fisher Controls International, Inc. | Pressure activated calibration system for chemical sensors |
| CN201107070Y (en) * | 2007-05-09 | 2008-08-27 | 时丹生 | Extrusion type liquid measuring container |
| CN101629839A (en) * | 2009-08-25 | 2010-01-20 | 杨斌 | Quick metering and dispensing device and method thereof for liquid spices |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030218A (en) * | 2013-03-08 | 2014-09-10 | 安派科生物医学科技（丽水）有限公司 | Pipetting device |
| CN103267551A (en) * | 2013-05-10 | 2013-08-28 | 湖北博凡生物科技有限公司 | Precise measuring device with changeable volume |
| CN103267551B (en) * | 2013-05-10 | 2015-09-30 | 湖北博凡生物科技有限公司 | Variable volume accurate measuring device |
| CN104344863A (en) * | 2013-07-29 | 2015-02-11 | 株式会社堀场制作所 | Measuring apparatus of liquid and apparatus for analyzing water quality |
| CN104347338A (en) * | 2013-08-01 | 2015-02-11 | 中微半导体设备(上海)有限公司 | Cooling liquid processing system of plasma processing device and method thereof |
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105466515A (en) * | 2016-01-12 | 2016-04-06 | 成都市天仁自动化科技有限公司 | Measuring-glass type outlet liquor measuring system of automatic liquor selling machine and measuring method thereof |
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| Publication number | Publication date |
|---|---|
| CN102692257B (en) | 2013-12-18 |
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