CN203881599U - Flow-type standard solution preparation device - Google Patents
Flow-type standard solution preparation device Download PDFInfo
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- CN203881599U CN203881599U CN201420151091.4U CN201420151091U CN203881599U CN 203881599 U CN203881599 U CN 203881599U CN 201420151091 U CN201420151091 U CN 201420151091U CN 203881599 U CN203881599 U CN 203881599U
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- flow
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- flowmeter
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Abstract
The utility model relates to a flow-type standard solution preparation device. The flow-type standard solution preparation device comprises a water sample inlet pipeline, an electric control injection pump, a first valve and a first flowmeter; the output end of the water sample inlet pipeline is connected with one end of the first valve after being connected with the output end of the electric control injection pump, the other end of the first valve is connected with the input end of the first flowmeter, and the output end of the first flowmeter outputs a prepared solution. The flow-type standard solution preparation device is designed by optimizing a traditional flow-type solution preparation device, the flow rate of the solution with the known concentration is precisely controlled by adopting the electric control injection pump, the first flowmeter is designed after the mixing of the solution, so that the precision for acquiring the concentration of the prepared solution can be effectively improved, and the concentration requirement of the finally acquired prepared solution can be guaranteed.
Description
Technical field
The utility model relates to a kind of flow-type standard solution device for formulating.
Background technology
Current existing standard solution preparation facilities, structure is comparatively complicated, after the various solution difference controlled concentrations and flow velocity that normally needs mixed, directly mix, but like this, for the bad control of concentration of last acquisition mixed solution, cannot accurately obtain as requested the obtain solution of prescribed concentration.
Utility model content
For above-mentioned technical matters, technical problem to be solved in the utility model is to provide one and has carried out structure optimization for prior art, can accurately obtain the flow-type standard solution device for formulating of prescribed concentration obtain solution.
The utility model is in order to solve the problems of the technologies described above by the following technical solutions: the utility model has designed a kind of flow-type standard solution device for formulating, comprises water sample inlet duct, automatically controlled syringe pump, the first valve and first flow meter; The output terminal of water sample inlet duct is connected with one end of the first valve after being connected with automatically controlled injection delivery side of pump, and the other end of the first valve is connected with the input end of first flow meter, the output terminal output obtain solution of first flow meter.
As a kind of optimal technical scheme of the present utility model: also comprise solution pick-up unit, the output terminal of described first flow meter is connected with the input end of solution pick-up unit, the output terminal output obtain solution of solution pick-up unit.
As a kind of optimal technical scheme of the present utility model: also comprise the first output channel and the second valve; Wherein, the output terminal of described first flow meter is connected with the first output channel, and meanwhile, the output terminal of first flow meter is connected with the input end of solution pick-up unit through the second valve.
As a kind of optimal technical scheme of the present utility model: also comprise the 3rd valve, after the output terminal of described water sample inlet duct is connected with automatically controlled injection delivery side of pump, be connected with the input end of the 3rd valve, the output terminal of the 3rd valve is connected with the output terminal of described first flow meter simultaneously simultaneously.
As a kind of optimal technical scheme of the present utility model: also comprise the second flowmeter, the second output channel and the 4th valve, the input end of the second flowmeter is connected with the output terminal of described solution pick-up unit through the 4th valve, and the output terminal of the second flowmeter is through the second output channel output obtain solution.
As a kind of optimal technical scheme of the present utility model: described water sample inlet duct, the first output channel and the second output channel are single tube stem and turn-off the rapid-acting coupling of form.
As a kind of optimal technical scheme of the present utility model: described first flow meter and the second flowmeter are electronic flow-meter.
A kind of flow-type standard solution device for formulating described in the utility model adopts above technical scheme compared with prior art, has following technique effect:
(1) the flow-type standard solution device for formulating of the utility model design, for existing flow-type obtain solution device, be optimized design, for the solution of concentration known, cancel flowmeter design, adopted automatically controlled syringe pump accurately to control the flow velocity of concentration known solution, and designed first flow meter after solution mixes, effectively improve the precision of obtaining obtain solution concentration, ensured finally to obtain the concentration requirement of obtain solution;
(2) in the flow-type standard solution device for formulating of the utility model design, also design solution pick-up unit, can conveniently realize for the detection of obtain solution and measuring, met the accuracy requirement of various occasions in practical application;
(3) in the flow-type standard solution device for formulating of the utility model design, when obtain solution being realized to detection measurement for employing solution pick-up unit, design the first output channel, to in not needing obtain solution to be detected to measurement, directly export obtain solution according to real-time needs;
(4) in the flow-type standard solution device for formulating of the utility model design, when obtain solution being realized to detection measurement for employing solution pick-up unit, design the 3rd valve, the 3rd valve mixes the design that is in parallel of end, first flow meter with water sample inlet duct and automatically controlled syringe pump, avoid the possible air leakage in flowmeter junction, can effectively ensure that solution pick-up unit detects the accuracy of measuring to obtain solution;
(5) the flow-type standard solution device for formulating of the utility model design, on the design basis of solution pick-up unit and the 3rd valve, design the second flowmeter, in realizing solution pick-up unit obtain solution is accurately detected, can know in real time the flow situation of output obtain solution;
(6) in the flow-type standard solution device for formulating of the utility model design, all adopt single tube stem to turn-off the rapid-acting coupling of form for water sample inlet duct, the first output channel and the second output channel, have easy to connect, quick, the advantage of good leak tightness, effectively less air leaks the impact on device;
(7) in the flow-type standard solution device for formulating of the utility model design, all adopt electronic flow-meter for first flow meter and the second flowmeter, can reach ± 0.5%FS of precision, is much better than common flowmeter.
Brief description of the drawings
Fig. 1 is the module diagram of the utility model design flow dynamic formula standard solution device for formulating.
Embodiment
Below in conjunction with Figure of description, embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model design flow dynamic formula standard solution device for formulating, comprises water sample inlet duct, automatically controlled syringe pump, the first valve and first flow meter; The output terminal of water sample inlet duct is connected with one end of the first valve after being connected with automatically controlled injection delivery side of pump, and the other end of the first valve is connected with the input end of first flow meter, the output terminal output obtain solution of first flow meter.The flow-type standard solution device for formulating of the utility model design, for existing flow-type obtain solution device, be optimized design, for the solution of concentration known, cancel flowmeter design, adopt automatically controlled syringe pump accurately to control the flow velocity of concentration known solution, and design first flow meter after solution mixes, directly obtain the flow velocity of obtain solution, and control by the first valve, obtain the obtain solution of more accurate prescribed concentration so that final; And wherein adopt automatically controlled syringe pump, can accurately control the flow velocity of solution in automatically controlled syringe pump.
On this basis, also comprise solution pick-up unit, the output terminal of described first flow meter is connected with the input end of solution pick-up unit, the output terminal output obtain solution of solution pick-up unit.Also comprise the first output channel and the second valve; Wherein, the output terminal of described first flow meter is connected with the first output channel, and meanwhile, the output terminal of first flow meter is connected with the input end of solution pick-up unit through the second valve.Also comprise the 3rd valve, after the output terminal of described water sample inlet duct is connected with automatically controlled injection delivery side of pump, be connected with the input end of the 3rd valve, the output terminal of the 3rd valve is connected with the output terminal of described first flow meter simultaneously simultaneously.Also comprise the second flowmeter, the second output channel and the 4th valve, the input end of the second flowmeter is connected with the output terminal of described solution pick-up unit through the 4th valve, and the output terminal of the second flowmeter is through the second output channel output obtain solution.Described water sample inlet duct, the first output channel and the second output channel are the rapid-acting coupling of single tube stem shutoff form.Described first flow meter and the second flowmeter are electronic flow-meter.
Based on above technical scheme, in the flow-type standard solution device for formulating of the utility model design, also design solution pick-up unit, can conveniently realize for the detection of obtain solution and measuring, meet the accuracy requirement of various occasions in practical application; When obtain solution being realized to detection measurement for employing solution pick-up unit, design the first output channel, in not needing obtain solution to be detected to measurement, directly export obtain solution according to real-time needs; When obtain solution being realized to detection measurement for employing solution pick-up unit, design the 3rd valve, the 3rd valve mixes the design that is in parallel of end, first flow meter with water sample inlet duct and automatically controlled syringe pump, avoid the possible air leakage in flowmeter junction, can effectively ensure that solution pick-up unit detects the accuracy of measuring to obtain solution; And on the design basis of solution pick-up unit and the 3rd valve, design the second flowmeter, in realizing solution pick-up unit obtain solution is accurately detected, can know in real time the flow situation of output obtain solution; All adopt single tube stem to turn-off the rapid-acting coupling of form for water sample inlet duct, the first output channel and the second output channel, have easy to connect, quick, the advantage of good leak tightness, effectively less air leaks the impact on installing; And all adopting electronic flow-meter for first flow meter and the second flowmeter, can reach ± 0.5%FS of precision, is much better than common flowmeter.
The utility model design flow dynamic formula standard solution device for formulating is in actual application, the pure water that meets one-level water water quality is introduced in this device by water sample inlet duct, now, the first output channel is in opening, the second valve and the 3rd valve closing, the first valve opening, controls automatically controlled syringe pump work, by concentration known C in automatically controlled syringe pump
bthe high concentration standard solution of (μ g/L) is with flow velocity Q
w(mL/min) be injected in this device, because the output terminal of water sample inlet duct is connected with one end of the first valve after being connected with automatically controlled injection delivery side of pump, pure water obtains flow velocity Q through the first valve by first flow instrumentation after mixing with high concentration standard solution
d(mL/min), can obtain the now concentration of low concentration standard solution
now can this low concentration standard solution be exported by the first output channel; Based on obtaining of above obtain solution, open the second valve and the 4th valve, obtain solution is through solution pick-up unit, the second flowmeter, from the second output channel output.
On this basis, for the preparation (inspection or calibration dissolved oxygen table) of low concentration dissolved oxygen DO standard solution, high concentration standard solution in the automatically controlled syringe pump demineralized water of air that has been saturated, according to atmospheric pressure and temperature at that time, the dissolved oxygen concentration C of solution of settling the standard can table look-up
b(μ g/L).Because content of oxygen in air is 20.9%, in device, the air leakage of trace can cause the concentration of the low concentration standard solution of device generation to have very large error.For avoiding the impact of air leakage, close the first valve, open the 3rd valve, the low concentration standard solution producing is after the 3rd valve, enter in solution pick-up unit and detect through the second valve again, through the 4th flow direction valve the second flowmeter, now obtain the now flow velocity Q of low concentration standard solution by the second flowmeter again
d(mL/min), then by the second output channel export.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.
Claims (7)
1. a flow-type standard solution device for formulating, comprises water sample inlet duct, automatically controlled syringe pump, the first valve and first flow meter; It is characterized in that: the output terminal of water sample inlet duct is connected with one end of the first valve after being connected with automatically controlled injection delivery side of pump, and the other end of the first valve is connected with the input end of first flow meter the output terminal output obtain solution of first flow meter.
2. a kind of flow-type standard solution device for formulating according to claim 1, it is characterized in that: also comprise solution pick-up unit, the output terminal of described first flow meter is connected with the input end of solution pick-up unit, the output terminal output obtain solution of solution pick-up unit.
3. a kind of flow-type standard solution device for formulating according to claim 2, is characterized in that: also comprise the first output channel and the second valve; Wherein, the output terminal of described first flow meter is connected with the first output channel, and meanwhile, the output terminal of first flow meter is connected with the input end of solution pick-up unit through the second valve.
4. according to a kind of flow-type standard solution device for formulating described in claim 2 or 3, it is characterized in that: also comprise the 3rd valve, after the output terminal of described water sample inlet duct is connected with automatically controlled injection delivery side of pump, be connected with the input end of the 3rd valve, the output terminal of the 3rd valve is connected with the output terminal of described first flow meter simultaneously simultaneously.
5. a kind of flow-type standard solution device for formulating according to claim 4, it is characterized in that: also comprise the second flowmeter, the second output channel and the 4th valve, the input end of the second flowmeter is connected with the output terminal of described solution pick-up unit through the 4th valve, and the output terminal of the second flowmeter is through the second output channel output obtain solution.
6. a kind of flow-type standard solution device for formulating according to claim 5, is characterized in that: described water sample inlet duct, the first output channel and the second output channel are single tube stem and turn-off the rapid-acting coupling of form.
7. a kind of flow-type standard solution device for formulating according to claim 5, is characterized in that: described first flow meter and the second flowmeter are electronic flow-meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151091.4U CN203881599U (en) | 2014-03-31 | 2014-03-31 | Flow-type standard solution preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151091.4U CN203881599U (en) | 2014-03-31 | 2014-03-31 | Flow-type standard solution preparation device |
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| Publication Number | Publication Date |
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| CN203881599U true CN203881599U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151091.4U Expired - Fee Related CN203881599U (en) | 2014-03-31 | 2014-03-31 | Flow-type standard solution preparation device |
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| CN (1) | CN203881599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239080A (en) * | 2020-01-21 | 2020-06-05 | 力合科技（湖南）股份有限公司 | Quality control device and OCEC analytic system |
-
2014
- 2014-03-31 CN CN201420151091.4U patent/CN203881599U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239080A (en) * | 2020-01-21 | 2020-06-05 | 力合科技（湖南）股份有限公司 | Quality control device and OCEC analytic system |
| CN111239080B (en) * | 2020-01-21 | 2023-09-29 | 力合科技（湖南）股份有限公司 | Quality control device and OCEC analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 550007 No. 32, Nanming, Guiyang District, Guizhou, Jiefang Road Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF GUIZHOU POWER GRID CO., LTD. Patentee after: NANJING HUATIAN SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 550007 No. 32, Nanming, Guiyang District, Guizhou, Jiefang Road Patentee before: Guizhou Power Test Institute Patentee before: Nanjing Hua Tian development in science and technology company limited |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20190331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |