CN202710386U - Automatic solution diluting equipment - Google Patents
Automatic solution diluting equipment Download PDFInfo
- Publication number
- CN202710386U CN202710386U CN 201220356416 CN201220356416U CN202710386U CN 202710386 U CN202710386 U CN 202710386U CN 201220356416 CN201220356416 CN 201220356416 CN 201220356416 U CN201220356416 U CN 201220356416U CN 202710386 U CN202710386 U CN 202710386U
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- equipment
- solution
- tube
- diluting
- dilution
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- 238000007865 diluting Methods 0.000 title abstract 8
- 239000012895 dilution Substances 0.000 claims description 34
- 238000010790 dilution Methods 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 31
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003085 diluting agent Substances 0.000 abstract 4
- 238000012806 monitoring device Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
Disclosed is automatic solution diluting equipment. Effective diluting capacity of the automatic solution diluting equipment ranges from several milliliters to dozens of milliliters. 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 the same time, the opening time and the closing time of the double-tube squeezing electromagnetic valve is controlled so as to accurately control the liquid inlet amount of the water sample and the diluents, and the water sample can be proportionally diluted by regulating water sample inlet duration and diluent inlet duration. 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 utility model relates to a kind of solution automatic dilution equipment, belongs to the front fluid sample pretreatment unit of analytical test.
Background technology
Because most of chemical analysis instruments all are provided with the measurement upper limit, therefore in order to adapt to the test request of high concentration water sample, sometimes need solution is carried out certainty ratio dilution pre-service.
Existing solution automatic dilution equipment mainly divides two kinds: the one, and high-precision microdilution instrument.Be typically provided with two high-precision syringe pumps in the instrument and realize dilution function, be widely used in the fields such as molecular biology test, advantage is that precision is high, stability is strong, but usable range is narrower, 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, main flow and ratio by variable valve control liquid.This equipment is mainly used in larger, 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 dilution equipment all can not satisfy.Need at present urgently stability better, be convenient to control, the solution automatic dilution equipment of tens of milliliters of lower-cost, useful volumes.
The utility model content
The purpose of this utility model is to propose a kind of solution automatic dilution equipment, make it not only can automatically finish distribution and the dilution of solution, and have simple in structure, cost is lower and the characteristics such as good stability, can be used for the fluid sample automatic dilution before the test chemical.
The technical solution of the utility model is as follows:
A kind of solution automatic dilution equipment, 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 be connected two-tube extrusion pressing type solenoid valve with the dilution feed tube after, and the outlet of threeway is connected with the import of volume pump; Described control module comprises power module and Programmable Logic Controller, volume pump be connected the extrusion pressing type solenoid valve and be connected with control module by operation circuit respectively.
Technical characterictic of the present utility model 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 by operation circuit.Top at cut-back tank also is provided with overflow vent.
The utility model compared with prior art has the following advantages and outstanding effect: 1. supporting the use of two-tube extrusion pressing type solenoid valve and threeway makes equipment set reduce cost, 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 solution automatic dilution equipment.
Fig. 2 is the control module synoptic diagram.
Fig. 3 is 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 solution automatic dilution equipment, 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 be connected with two imports of threeway 3 after dilution feed tube 1b is connected two-tube extrusion pressing type solenoid valve 2, 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, volume pump 4 be connected extrusion pressing type solenoid valve 2 and be connected with control module 8 by operation circuit respectively, wherein contain 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%.
Solution feed tube 1a with connected by threeway 3 after dilution feed tube 1b is connected two-tube extrusion pressing type solenoid valve 2 after, the integrated feed tube of two manifolds, volume pump 4 injects cut-back tank 5 exactly with the liquid in the feed tube, cut-back tank 5 contains overflow vent 6, bottom at cut-back tank also is connected with membrane pump 7, waste liquid is discharged by membrane pump 7, and membrane pump 7 is connected with control module 8 by 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 software flow block diagram.Solution mixes according to a certain percentage with dilution.The course of work of solution automatic dilution equipment is as follows: volume pump 4 starts running, and solution enters 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 enters cut-back tank 5, b after second volume pump shut down, then close two-tube extrusion pressing type solenoid valve 2.Repeat n above cyclic process.After the dilute solution that cooperates experiment to use was finished using, membrane pump 7 started 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 finished.
Claims (4)
1. solution automatic dilution equipment, 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 1b with the dilution feed tube) through being connected with two imports of threeway (3) behind the two-tube extrusion pressing type solenoid valve (2), 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), volume pump (4) be connected extrusion pressing type solenoid valve (2) and be connected with control module (8) by operation circuit respectively.
2. a kind of solution automatic dilution equipment 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. a kind of solution automatic dilution equipment according to claim 1 and 2, it 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) by operation circuit.
4. a kind of solution automatic dilution equipment according to claim 3, it 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 |
|---|---|---|---|
| CN 201220356416 CN202710386U (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356416 CN202710386U (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710386U true CN202710386U (en) | 2013-01-30 |
Family
ID=47590677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356416 Expired - Fee Related CN202710386U (en) | 2012-07-20 | 2012-07-20 | Automatic solution diluting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852369A (en) * | 2014-03-24 | 2014-06-11 | 深圳市清时捷科技有限公司 | Diluting device and method |
| CN106018863A (en) * | 2016-07-29 | 2016-10-12 | 北京宝德仪器有限公司 | Measuring device and process for measuring by virtue of standard addition method |
-
2012
- 2012-07-20 CN CN 201220356416 patent/CN202710386U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852369A (en) * | 2014-03-24 | 2014-06-11 | 深圳市清时捷科技有限公司 | Diluting device and method |
| CN103852369B (en) * | 2014-03-24 | 2017-05-17 | 深圳市清时捷科技有限公司 | Diluting device and method |
| CN106018863A (en) * | 2016-07-29 | 2016-10-12 | 北京宝德仪器有限公司 | Measuring device and process for measuring by virtue of standard addition method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20160720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |