CN202693598U - Pneumatic liquid quantifying device - Google Patents
Pneumatic liquid quantifying device Download PDFInfo
- Publication number
- CN202693598U CN202693598U CN 201220268129 CN201220268129U CN202693598U CN 202693598 U CN202693598 U CN 202693598U CN 201220268129 CN201220268129 CN 201220268129 CN 201220268129 U CN201220268129 U CN 201220268129U CN 202693598 U CN202693598 U CN 202693598U
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- liquid
- cup
- pneumatic
- valve
- air pump
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Abstract
The utility model discloses a pneumatic liquid quantifying device. The pneumatic liquid quantifying device is characterized by comprising a container, a sealed liquid quantifying cup, an air pump, a liquid-inlet valve and a drain valve, wherein the air pump is connected with the sealed liquid quantifying cup through an intake and exhaust pipe; the distance between a liquid-inlet pipe in the sealed liquid quantifying cup and the bottom of the sealed liquid quantifying cup is fixed height; the liquid-inlet pipe in the sealed liquid quantifying cup is connected with a pipe inserted into liquid in the container through the liquid-inlet valve; and the drain valve is arranged on a drain pipe connected with the bottom of the sealed liquid quantifying cup. Under the action of air power of the air pump, the processes of liquid inlet, quantification and drainage are finished by alternatively opening and closing the liquid-inlet valve and the drain valve, so that the pneumatic liquid quantifying device is reliable in work and easy to adjust and calibrate. In a pneumatic process, the liquid and gas flush the pipe, so that retardation and residual are reduced, and the device is applied to quantification of corrosive liquid and unclean liquid.
Description
Technical field
The utility model relates to chemical analysis field, is a kind of Pneumatic liquid proportioning device.
Technical background
The quantitative problem that all has sample, medicament in fields such as chemical analyses, existing conventional method are to use volume pump, such as peristaltic pump, membrane pump etc.The problem that exists is that measuring accuracy is low, and peristaltic tube weares and teares easily, 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: for the non-clean water that suspension and silt are arranged, use volume pump to be out of order easily.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, applicable, quantitatively Pneumatic liquid proportioning device accurately.
Pneumatic liquid proportioning device of the present utility model, 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 connects with pipeline in being connected vessel liquid by liquid feed valve, and the discharging tube that connects in closed liquid quantitative cup bottom arranges tapping valve.
Pneumatic liquid proportioning device of the present utility model is under the aerodynamic force effect of air pump, alternately Push And Release by liquid feed valve and tapping valve, finish feed liquor, quantitatively, the process of discharge opeing, in the certain situation of closed liquid quantitative cup Bei Ti Transverse sectional area, quantitatively the size of volume is determined by the quantitative height of feed tube at the bottom of its glass, can adjust, quantitatively height is in a single day fixing for this, each liquid volume of discharging is identical, and quantitative precision is relevant with cup De Transverse sectional area size, and it is simple in structure, make easily, reliable operation is easy to adjust and demarcate, because the pneumatic process liquids and gases have souring to pipeline, reduced retardance and residual, be fit to corrosive liquids, the quantitative Application of non-clean liquid, cost is low, long service life.
Description of drawings
Fig. 1 is 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 liquid feed valves, 6 tapping valves, 7 containers, 8 air pumps.
Embodiment
The below utilizes drawings and Examples that Pneumatic liquid proportioning device of the present utility model is further described.
With reference to Fig. 1, Pneumatic liquid proportioning device of the present utility model 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, 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 connects with pipeline in being connected container 7 liquid by liquid feed valve 5, and the discharging tube 3 that connects in closed liquid quantitative cup 4 bottoms arranges tapping valve 6.
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 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, until closed liquid quantitative cup 4 interior liquid levels are when being 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 backward rotation, air pump 8 is filled with air by 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, until
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, finish 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 backward rotation, be filled with air by air inlet-outlet pipe 2 in closed liquid quantitative cup 4, liquid is discharged through discharging tube 3 under the gaseous tension effect.
Claims (1)
1. Pneumatic liquid proportioning device, 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 connects with pipeline in being connected vessel liquid by liquid feed valve, and the discharging tube that connects in closed liquid quantitative cup bottom arranges tapping valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268129 CN202693598U (en) | 2012-06-08 | 2012-06-08 | Pneumatic liquid quantifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268129 CN202693598U (en) | 2012-06-08 | 2012-06-08 | Pneumatic liquid quantifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202693598U true CN202693598U (en) | 2013-01-23 |
Family
ID=47549200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268129 Withdrawn - After Issue CN202693598U (en) | 2012-06-08 | 2012-06-08 | Pneumatic liquid quantifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202693598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692257A (en) * | 2012-06-08 | 2012-09-26 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying method and device thereof |
| CN106872225A (en) * | 2015-12-10 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of water sample pretreatment device and its application method |
-
2012
- 2012-06-08 CN CN 201220268129 patent/CN202693598U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692257A (en) * | 2012-06-08 | 2012-09-26 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying method and device thereof |
| CN102692257B (en) * | 2012-06-08 | 2013-12-18 | 吉林市光大分析技术有限责任公司 | Pneumatic liquid quantifying method and device thereof |
| CN106872225A (en) * | 2015-12-10 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of water sample pretreatment device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20131218 |
|
| RGAV | Abandon patent right to avoid regrant |