CN102692257B - Pneumatic liquid quantifying method and device thereof - Google Patents
Pneumatic liquid quantifying method and device thereof Download PDFInfo
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- CN102692257B CN102692257B CN 201210187055 CN201210187055A CN102692257B CN 102692257 B CN102692257 B CN 102692257B CN 201210187055 CN201210187055 CN 201210187055 CN 201210187055 A CN201210187055 A CN 201210187055A CN 102692257 B CN102692257 B CN 102692257B
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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
All have the quantitative problem of sample, medicament in fields such as chemical analyses, existing conventional method is to use volume pump, such as peristaltic pump, membrane pump etc.The problem existed is that measuring accuracy is low, and peristaltic tube easily weares and teares, the back-stop mechanism leakiness of membrane pump.Particularly 1: for tens liquor capacities to the hundreds of milliliter, do not have suitable volume pump optional; 2: for the non-clean water that suspension and silt are arranged, use volume pump easily to be out of order.
Summary of the invention
It is simple, applicable that one of purpose of the present invention is to provide a kind of method, quantitative Pneumatic liquid quantivative approach accurately, and two of goal of the invention is that quantitatively device used 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:
Liquid feed valve is opened, tapping valve is closed, the air pump forward rotation, air in closed liquid quantitative cup is extracted out through air inlet-outlet pipe, the cup-shaped one-tenth vacuum of closed liquid quantitative, atmospheric pressure by liquid from container in feed tube is pressed into closed liquid quantitative cup, until in closed liquid quantitative cup, liquid level is during higher than the feed tube lower end, air pump cuts out;
B) quantitative process
Liquid feed valve is opened, tapping valve is closed, air pump rotates backward, air pump is filled with air by air inlet-outlet pipe in closed liquid quantitative cup, gaseous tension in closed liquid quantitative cup is higher than atmospheric pressure, and the liquid in closed liquid quantitative cup is in feed tube returns to container, until the liquid level in closed liquid quantitative cup drops to concordant with the feed tube lower surface, air pump cuts out, and completes the quantitative of liquid;
C) discharge opeing process
Liquid feed valve is closed, and tapping valve is opened, and air pump continues to rotate backward, and by air inlet-outlet pipe, in closed liquid quantitative cup, is filled with air, and under the gaseous tension effect, liquid is discharged through discharging tube.
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, liquid feed valve and tapping valve, described air pump is connected with closed liquid quantitative cup by 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 the pipeline in inserting in vessel liquid by liquid feed valve, on the discharging tube connected in closed liquid quantitative cup bottom, tapping valve is set.
Pneumatic liquid quantivative approach of the present invention is by means of the power of air pump, under the alternation switch effect of liquid feed valve and tapping valve, complete the process of feed liquor-quantitatively-discharge opeing, in the situation that closed liquid quantitative cup Bei Ti Transverse sectional area is certain, quantitatively the size of volume is determined apart from the quantitative height at the bottom of its glass by feed tube, can adjust, once quantitatively height is fixing for this, each liquid volume of discharging is identical, quantitative precision is relevant with cup Transverse sectional area size, its method easily realizes, reliable operation, be easy to adjust and demarcate, because the pneumatic process liquids and gases have souring to pipeline, reduced retardance and residual, be applicable to corrosive liquids, the quantitative Application of non-clean liquid.
Pneumatic liquid proportioning device of the present invention simple in structure, easily make, and cost is low, long service life.
The accompanying drawing explanation
Fig. 1 is Pneumatic liquid proportioning device structural representation;
The discharge opeing process schematic diagram that Fig. 2 is the Pneumatic liquid quantivative approach;
The quantitative process schematic diagram that Fig. 3 is the Pneumatic liquid quantivative approach;
The discharge opeing process schematic diagram that Fig. 4 is the Pneumatic liquid quantivative approach.
In figure: 1 feed tube, 2 air inlet-outlet pipes, 3 discharging tubes, 4 closed liquid quantitative cups, 5 liquid feed valves, 6 tapping valves, 7 containers, 8 air pumps.
Embodiment
Below utilize drawings and Examples to be further described Pneumatic liquid proportioning device of the present invention.
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, liquid feed valve 5 and tapping valve 6, described air pump 8 is connected with closed liquid quantitative cup 4 by air inlet-outlet pipe 2, the built-in feed tube 1 of closed liquid quantitative cup 4 is quantitative height at the bottom of its glass, the built-in feed tube 1 of closed liquid quantitative cup 4 is connected with the pipeline in inserting in container 7 liquid by liquid feed valve 5, on the discharging tube 3 connected 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: liquid feed valve 5 is opened, tapping valve 6 is closed, air pump 8 forward rotation, air in closed liquid quantitative cup 4 is extracted out through air inlet-outlet pipe 2, and closed liquid quantitative cup 4 forms vacuum, atmospheric pressure by liquid from container 7 in feed tube 1 is pressed into closed liquid quantitative cup 4, until closed liquid quantitative cup 4 interior liquid levels are during higher than feed tube 1 lower end, air pump 8 cuts out.
With reference to Fig. 1 and 3, the quantitative process of Pneumatic liquid quantivative approach: liquid feed valve 5 is opened, tapping valve 6 is closed, air pump 8 rotates backward, air pump 8 is filled with air by air inlet-outlet pipe 2 in closed liquid quantitative cup 4, gaseous tension in closed liquid quantitative cup 4 is higher than atmospheric pressure, the liquid in closed liquid quantitative cup 4 in feed tube 1 returns to container 7, until
Liquid levels in closed liquid quantitative cup 4 drop to till feed tube 1 lower surface is concordant, and air pump 8 cuts out, complete liquid quantitatively;
With reference to Fig. 1 and 4, the Pneumatic liquid quantivative approach the discharge opeing process: liquid feed valve 5 is closed, and tapping valve 6 is opened, and air pump 8 continues to rotate backward, be filled with air by air inlet-outlet pipe 2 in closed liquid quantitative cup 4, under the gaseous tension effect, liquid is discharged through discharging tube 3.
Claims (2)
1. a Pneumatic liquid quantivative approach, is characterized in that, it comprises following content:
A) feed liquor process:
Liquid feed valve is opened, tapping valve is closed, the air pump forward rotation, air in closed liquid quantitative cup is extracted out through air inlet-outlet pipe, the cup-shaped one-tenth vacuum of closed liquid quantitative, atmospheric pressure by liquid from container in feed tube is pressed into closed liquid quantitative cup, until in closed liquid quantitative cup, liquid level is during higher than the feed tube lower end, air pump cuts out;
B) quantitative process
Liquid feed valve is opened, tapping valve is closed, air pump rotates backward, air pump is filled with air by air inlet-outlet pipe in closed liquid quantitative cup, gaseous tension in closed liquid quantitative cup is higher than atmospheric pressure, and the liquid in closed liquid quantitative cup is in feed tube returns to container, until the liquid level in closed liquid quantitative cup drops to concordant with the feed tube lower surface, air pump cuts out, and completes the quantitative of liquid;
C) discharge opeing process
Liquid feed valve is closed, and tapping valve is opened, and air pump continues to rotate backward, and by air inlet-outlet pipe, in closed liquid quantitative cup, is filled with air, and under the gaseous tension effect, liquid is discharged through discharging tube.
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, liquid feed valve and tapping valve, described air pump is connected with closed liquid quantitative cup by 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 the pipeline in inserting in vessel liquid by liquid feed valve, on the discharging tube connected 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 CN102692257A (en) | 2012-09-26 |
| CN102692257B true CN102692257B (en) | 2013-12-18 |
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Families Citing this family (6)
| 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 |
| 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 |
| JP6223041B2 (en) * | 2013-07-29 | 2017-11-01 | 株式会社堀場製作所 | Liquid metering device and water quality analyzer |
| 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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| 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 |
| WO2011035096A2 (en) * | 2009-09-18 | 2011-03-24 | The Procter & Gamble Company | Unit dose dispensing apparatus |
| CN102049498A (en) * | 2009-10-30 | 2011-05-11 | 成都弘佛科技有限公司 | Pneumatic metal quantitative pouring equipment |
| 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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- 2012-06-08 CN CN 201210187055 patent/CN102692257B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2011035096A2 (en) * | 2009-09-18 | 2011-03-24 | The Procter & Gamble Company | Unit dose dispensing apparatus |
| CN102049498A (en) * | 2009-10-30 | 2011-05-11 | 成都弘佛科技有限公司 | Pneumatic metal quantitative pouring equipment |
| 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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