CN102778383A - Automatic solution diluting equipment - Google Patents
Automatic solution diluting equipment Download PDFInfo
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- CN102778383A CN102778383A CN2012102543319A CN201210254331A CN102778383A CN 102778383 A CN102778383 A CN 102778383A CN 2012102543319 A CN2012102543319 A CN 2012102543319A CN 201210254331 A CN201210254331 A CN 201210254331A CN 102778383 A CN102778383 A CN 102778383A
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Abstract
Disclosed is automatic solution diluting equipment. Effective diluting capacity of the automatic solution diluting equipment ranges from several millimeters to dozens of millimeters. The automatic solution diluting equipment comprises a control unit, a solution inlet tube, a diluent inlet tube, a double-tube squeezing electromagnetic valve, a tee joint, a metering pump, a diluting container and a diaphragm pump. The tee joint and the double-tube squeezing electromagnetic valve are used together so as to guarantee that only a water sample or diluent can flow through the automatic diluting equipment at a time, and the water sample can be proportionally diluted by regulating duration for injecting the water sample and duration for injecting the diluent. The integral equipment only comprises one metering pump, and accordingly, investment is saved, running expense is low, and the automatic solution diluting equipment is suitable to be used as pretreatment equipment for most chemical analysis and online monitoring devices. In addition, the equipment does not need to be calibrated regularly, and is simple and convenient to maintain.
Description
Technical field
The present invention relates to the automatic diluent facilities of a kind of solution, belong to the preceding fluid sample pretreatment unit of analytical test.
Background technology
Because most of chemical analysis instruments all are provided with the measurement upper limit,, need sometimes solution is carried out certainty ratio dilution pre-service therefore in order to adapt to the test request of high concentration water sample.
The automatic diluent facilities of existing solution mainly divides two kinds: the one, and high-precision Microdilution device.Be typically provided with two high-precision syringe pumps in the instrument and realize dilution; Be widely used in fields such as molecular biology test; Advantage is that precision is high, stability is strong, but usable range is narrower, and effectively dilute volume is usually between several microlitres are to several milliliters; But owing to adopted the high precision syringe pump, cost is higher.The 2nd, industrial on-line dilution device, mainly flow and the ratio through the variable valve controlling liquid.This equipment is mainly used in bigger, not high to the accuracy requirement situation of liquid volume added, and the useful volume scope rises between several cubic metres several.And the required sample of most of chemical analysis tests is in several milliliters to tens milliliters family, and above-mentioned two kinds of automatic diluent facilities all can not satisfy.Need at present urgently stability better, be convenient to control, the automatic diluent facilities of solution of tens of milliliters of lower-cost, useful volumes.
Summary of the invention
The objective of the invention is to propose the automatic diluent facilities of a kind of solution, make its distribution and the dilution that not only can accomplish solution automatically, and have simple in structure, cost is lower and characteristics such as good stability, the fluid sample that can be used for before the test chemical dilutes automatically.
Technical scheme of the present invention is following:
The automatic diluent facilities of a kind of solution; Contain control module, solution feed tube, dilution feed tube, volume pump and cut-back tank; It is characterized in that: this equipment also comprises threeway and two-tube extrusion pressing type solenoid valve; The solution feed tube is connected with two imports of threeway through behind the two-tube extrusion pressing type solenoid valve with the dilution feed tube, and the outlet of threeway is connected with the import of volume pump; Described control module comprises power module and Programmable Logic Controller, and volume pump is connected with control module through operation circuit respectively with two-tube extrusion pressing type solenoid valve.
Technical characterictic of the present invention also is: described volume pump adopt flow range in 5～100ml/min, precision at the volume pump more than 5%.The bottom of cut-back tank is provided with membrane pump, and membrane pump is connected with control module through operation circuit.Top at cut-back tank also is provided with overflow vent.
The present invention compared with prior art has the following advantages and outstanding effect: the supporting use of 1. two-tube extrusion pressing type solenoid valve and threeway makes equipment set reduce cost, has only adopted a volume pump.2. dilution is to utilize two-tube extrusion pressing type solenoid valve in proportion, control that solution and dilution feed liquor time are separately realized in the flow process, so need not regularly volume pump to be calibrated, and has reduced the workload of operation maintenance.3. the usable range of this equipment is wider, from several milliliters to hundreds of milliliter all can, can satisfy the requirement of most chemical analysis instrument and on-line monitoring instrument.
Description of drawings
Fig. 1 is the example structure synoptic diagram of the automatic diluent facilities of solution.
Fig. 2 is the control module synoptic diagram.
Fig. 3 is a software flow block diagram.
Among the figure: 1a-solution feed tube; 1b-dilution feed tube; The two-tube extrusion pressing type solenoid valve of 2-; The 3-threeway; The 4-volume pump; The 5-cut-back tank; The 6-overflow vent; The 7-membrane pump; The 8-control module, 8a-power module, 8b-Programmable Logic Controller; The 9-waste liquid, 10-solution to be measured.
Embodiment
Fig. 1 is the structural representation of the automatic diluent facilities of solution; This equipment contains control module 8, solution feed tube 1a, dilution feed tube 1b, volume pump 4, cut-back tank 5, threeway 3 and two-tube extrusion pressing type solenoid valve 2; Solution feed tube 1a is connected with two imports of threeway 3 through two-tube extrusion pressing type solenoid valve 2 backs with dilution feed tube 1b, and the outlet of threeway is connected with the import of volume pump; Described control module 8 comprises power module 8a and Programmable Logic Controller 8b, and volume pump 4 is connected with control module 8 through operation circuit respectively with two-tube extrusion pressing type solenoid valve 2, wherein contains power module 8a, electromagnetic relay output module 8b in the control module 8.Effective dilution capacity of this equipment is several milliliters to tens milliliters, according to the dilution useful capacity, volume pump should adopt flow range in 5～100ml/min, precision at the volume pump more than 5%.
After solution feed tube 1a and dilution feed tube 1b are connected by threeway 3 through two-tube extrusion pressing type solenoid valve 2 backs; The integrated feed tube of two manifolds; Volume pump 4 injects cut-back tank 5 exactly with the liquid in the feed tube, and cut-back tank 5 contains overflow vent 6, also is connected with membrane pump 7 in the bottom of cut-back tank; Waste liquid is discharged by membrane pump 7, and membrane pump 7 is connected with control module 8 through operation circuit.
Fig. 2 is the control module synoptic diagram, and power module 8a is connected with Programmable Logic Controller 8b, and the both positive and negative polarity of membrane pump 7, volume pump 4 and two-tube extrusion pressing type solenoid valve 2 links to each other with the both positive and negative polarity of three passages (1,2,3) of Programmable Logic Controller 8b respectively.
Fig. 3 is a software flow block diagram.Solution mixes with dilution according to a certain percentage.The course of work of the automatic diluent facilities of solution is following: volume pump 4 starts running, and solution gets into cut-back tank 5; A after second volume pump 4 shut down, two-tube extrusion pressing type solenoid valve is opened, volume pump 4 is restarted, dilution gets into cut-back tank 5, b after second volume pump shut down, close two-tube extrusion pressing type solenoid valve 2 then.Repeat n above cyclic process.After waiting that the dilute solution that cooperates experiment to use is finished using, membrane pump 7 starts running, the redundant solution in the emptying cut-back tank 5, and last membrane pump 7 shuts down.Since then, the whole flow process of solution dilution is accomplished.
Claims (4)
1. automatic diluent facilities of solution; Contain control module (8), solution feed tube (1a), dilution feed tube (1b), volume pump (4) and cut-back tank (5); It is characterized in that: this equipment also comprises threeway (3) and two-tube extrusion pressing type solenoid valve (2); Solution feed tube (1a) is connected with two imports of threeway (3) through two-tube extrusion pressing type solenoid valve (2) back with dilution feed tube (1b), and the outlet of threeway is connected with the import of volume pump; Described control module (8) comprises power module (8a) and Programmable Logic Controller (8b), and volume pump (4) is connected with control module (8) through operation circuit respectively with two-tube extrusion pressing type solenoid valve (2).
2. the automatic diluent facilities of a kind of solution according to claim 1 is characterized in that: described volume pump adopt flow range in 5～100ml/min, precision at the volume pump more than 5%.
3. the automatic diluent facilities of a kind of solution according to claim 1 and 2 is characterized in that: the bottom of cut-back tank (5) is provided with membrane pump (7), and membrane pump (7) is connected with control module (8) through operation circuit.
4. the automatic diluent facilities of a kind of solution according to claim 3 is characterized in that: the top of cut-back tank (5) is provided with overflow vent (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254331.9A CN102778383B (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254331.9A CN102778383B (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
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| Publication Number | Publication Date |
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| CN102778383A true CN102778383A (en) | 2012-11-14 |
| CN102778383B CN102778383B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210254331.9A Active CN102778383B (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
| CN105158051A (en) * | 2015-10-14 | 2015-12-16 | 郑州富铭环保科技有限公司 | Dilution device for determination of high-concentration water sample through water-quality on-line analyzer |
| CN106198477A (en) * | 2016-07-29 | 2016-12-07 | 北京宝德仪器有限公司 | Hydride generation system and method for generation for atomic fluorescence spectrometer |
| CN109855946A (en) * | 2019-02-19 | 2019-06-07 | 苏州科技大学 | A kind of high-concentration waste water on-line detector water inlet dilution device |
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| CN2825085Y (en) * | 2005-06-15 | 2006-10-11 | 广州海岩环保科技有限公司 | High-accuracy gas mixing device |
| EP2175340A2 (en) * | 2008-08-26 | 2010-04-14 | Sysmex Corporation | Reagent preparing apparatus, sample processing apparatus and reagent preparing method |
| CN101816907A (en) * | 2009-02-26 | 2010-09-01 | 希森美康株式会社 | Reagent preparing device, specimen processing system and reagent preparing method |
| CN201832599U (en) * | 2010-09-15 | 2011-05-18 | 威海怡和专用设备制造股份有限公司 | Automatic dispensing device of liquid materials |
| CN102513020A (en) * | 2011-12-02 | 2012-06-27 | 上海科勒电子科技有限公司 | Gas and liquid mixed liquid supply and conveying device |
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2012
- 2012-07-20 CN CN201210254331.9A patent/CN102778383B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2825085Y (en) * | 2005-06-15 | 2006-10-11 | 广州海岩环保科技有限公司 | High-accuracy gas mixing device |
| EP2175340A2 (en) * | 2008-08-26 | 2010-04-14 | Sysmex Corporation | Reagent preparing apparatus, sample processing apparatus and reagent preparing method |
| CN101816907A (en) * | 2009-02-26 | 2010-09-01 | 希森美康株式会社 | Reagent preparing device, specimen processing system and reagent preparing method |
| EP2224224A2 (en) * | 2009-02-26 | 2010-09-01 | Sysmex Corporation | Reagent preparing device, specimen processing system and reagent preparing method |
| CN201832599U (en) * | 2010-09-15 | 2011-05-18 | 威海怡和专用设备制造股份有限公司 | Automatic dispensing device of liquid materials |
| CN102513020A (en) * | 2011-12-02 | 2012-06-27 | 上海科勒电子科技有限公司 | Gas and liquid mixed liquid supply and conveying device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
| CN105158051A (en) * | 2015-10-14 | 2015-12-16 | 郑州富铭环保科技有限公司 | Dilution device for determination of high-concentration water sample through water-quality on-line analyzer |
| CN106198477A (en) * | 2016-07-29 | 2016-12-07 | 北京宝德仪器有限公司 | Hydride generation system and method for generation for atomic fluorescence spectrometer |
| CN109855946A (en) * | 2019-02-19 | 2019-06-07 | 苏州科技大学 | A kind of high-concentration waste water on-line detector water inlet dilution device |
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| Publication number | Publication date |
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| CN102778383B (en) | 2015-06-17 |
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