CN208902598U - Detect the multi-layer micro-fluidic chips of heavy metal ion - Google Patents
Detect the multi-layer micro-fluidic chips of heavy metal ion Download PDFInfo
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- CN208902598U CN208902598U CN201821443006.6U CN201821443006U CN208902598U CN 208902598 U CN208902598 U CN 208902598U CN 201821443006 U CN201821443006 U CN 201821443006U CN 208902598 U CN208902598 U CN 208902598U
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Abstract
The utility model provides a kind of multi-layer micro-fluidic chips for detecting heavy metal ion, it is made of first layer filter device, second layer absorption plant, third layer reaction unit and four part of gasket, it is characterized by: entire chip divides three-decker, and it is fixed with small steel needle, there are anti-return effect, the second layer to absorb greasy dirt, organic matter by installation carbon sponge through first layer filtering, the reaction unit of third layer, wherein the depth of reaction detection pond and filtrate collecting pit is below liquid separation channel, and gasket prevents filtrate from leaking out from gap.The utility model technical characterstic: chip interior multiple stage filtration system makes the heavy metal ion in waste water obtain further extraction, equal subchannel and back-flow preventer are devised in third layer reaction unit, realize the multi-level integration filtered, detected of more separation.The characteristics of whole device is big, the device is complicated instead of existing volume, makes to detect more convenient, quick, and can carry, be suitable for different crowd real-time detection.
Description
Technical field
The utility model relates to a kind of addition colorimetrics, and using colorimetric method, quickly to detect heavy metal ion in petroleum wastewater dense
The multi-layer micro-fluidic chips of degree.
Technical background
With the development of the social economy, pollution suffered by social environment is also more and more, petroleum wastewater is today's society
One of pollution sources.It, can be indirectly to human body containing poisonous and harmful substances such as a large amount of oil substances, heavy metals in petroleum wastewater
Health causes damages.Today's society, the detection of heavy metal is favourably welcome in petroleum wastewater.Since current detecting instrument volume is big,
Complicated for operation, the shortcomings that cannot quickly detecting, designing the chip can be with one-time detection contents of many kinds of heavy metal ion, and the mark with production
Quasi- color range compares the concentration to determine heavy metal in petroleum wastewater, and it is integrated, micro, quick, conveniently to realize removal of impurities, can
The characteristics of carrying.
Utility model content
The shape and structure of the utility model was, and it is an object of the present invention to provide a kind of novel shape and structure, the structure of multilayer made
Filter is combined with oil removing, is easily and effectively played and is avoided large granular impurity jam detection channel, and avoids greasy dirt, organic
Influence of the object to detection of heavy metal ion.
The technical solution of the use of the new type are as follows: a kind of impurity for removing petroleum wastewater is used to detect wherein heavy metal ion
Micro-fluidic chip, by first layer filter device, four part group of second layer absorption plant, third layer reaction unit and gasket
At, it is characterised in that: entire chip divides three-decker, and is fixed, detachably with small steel needle, filter through first layer and have anti-return
Effect, the second layer absorb greasy dirt, organic matter by installation carbon sponge, and the reaction unit of third layer, wherein reactive tank and filtrate are received
The depth of Ji Chi is below liquid separation channel.Wherein the depth of filtrate collecting pit is lower than liquid separation channel, facilitates filtrate at four points
The flow in liquid channel is essentially identical, ensure that the amount of filtrate arrival reactive tank is identical, keeps experimental result more acurrate；The depth of reactive tank
Degree is also below liquid separation channel, it is therefore prevented that into the filtrate collecting pit of the filtrate backflow pollution in reactive tank.Gasket makes first layer
There is better sealing between the second layer, the second layer and third layer, prevents leakage.
The first layer of the utility model is made of injection port, sample intake passage and filter screen, and the diameter of injection port is greater than sample introduction
The width in channel, it is therefore prevented that the spilling of sample.Filter screen is to select copper, concave filter screen, is used for filtering oil waste water
In large granular impurity, prevent its from blocking microchannel, and concave copper mesh prevents from being loaded and too fast causes to flow back.And in filtrate
Channel and its opposite side are equipped with filter screen card slot one, the fixation for filter screen.
The second layer is made of absorbed layer, filtrate channel and filtrate hole, and absorbed layer is made of carbon sponge and fixed cylinder.Carbon sea
Absorption of the silk floss for greasy dirt and organic matter in petroleum wastewater, and adsorption strength is very good, and the overall diameter of fixed cylinder is equal to
The diameter of carbon sponge.Carbon sponge is put into card slot two first, then fixed cylinder is placed on carbon sponge, the height etc. of fixed cylinder
In the height of card slot two, be conducive to the fixation of carbon sponge.
Third layer is made of filtrate collecting pit, liquid separation channel and reactive tank, and the depth of filtrate collecting pit is lower than liquid separation channel,
When filtrate fills up the difference in height in liquid separation channel and filtrate collecting pit, filtrate is flowed by way of spilling in four reactive tanks,
It ensure that the flow in each liquid separation channel.Secondly the depth of reactive tank is also below liquid separation channel, when filtrate flow into reactive tank with than
After coloured paper reaction solution, prevents filtrate from crossing and flow back into the filtrate of colour developing in filtrate collecting pit.Finally, by first layer, gasket,
The second layer, gasket and third layer successively assemble, and are fixed with golden steel needle.
Compared with prior art, the utility model has following the utility model has the advantages that the design of the microfluidic chip structure uses
Multiple filtration absorption system, keeps the removal of impurities of petroleum wastewater more effective, eliminates influence of other substances to experiment as far as possible；
The design of third layer reaction unit has filtrate equipartition device and anti-backflow device, improves the accuracy of micro-fluidic detection；The miniflow
Control chip is also equipped with fixing groove, is able to achieve the detachable of micro-fluidic chip, easy to clean and exchange colorimetric for, and this is practical new
Type is small in size, can be used for real-time, the continuous monitoring of environment.
Detailed description of the invention
Fig. 1 is the first layer overlooking structure diagram of the utility model.
Fig. 2 is the second layer overlooking structure diagram of the utility model.
Fig. 3 is the third layer overlooking structure diagram of the utility model.
Fig. 4 is the main view of the utility model.
In figure: 1. injection ports；2. sample intake passage；3. strainer card slot；4. fixation hole；5. outlet；6. two layers of injection port；7.
Fixed cylinder；8. filtrate channel；9. filtrate outlet；10. reaction detection pond；11. filtrate collecting pit；12. liquid separation channel；13.
Gasket；14. cylinder card slot；15. fixed pin.
Specific embodiment
Referring to figs. 1 to the shape and structure in Fig. 4, a kind of multi-layer micro-fluidic chips detecting heavy metal ion, feature exists
In: the chip is in rectangle or circle, and by three layers of shape and size, of the same size, transparent material substrate fits together,
It is fixed by fixation hole 4 with fixed pin 15, and can dismantle.
The substrate of the first layer is machined with injection port 1 on round or rectangle substrate side, sample intake passage 2
One end connects injection port 1.Its other end is connect with outlet 5.Strainer card slot 3 is machined in outlet 5, strainer card slot 3 is installed
There is the filter screen of concave.The diameter dimension of the injection port 1 is greater than the width dimensions of sample intake passage 2, the bottom surface water of injection port 1
Plane is lower than the bottom surface horizontal plane of sample intake passage 2.The diameter of injection port 1 is greater than the width of sample intake passage 2, it is therefore prevented that sample overflows
Out.Filter screen is to select copper, concave filter screen, for the large granular impurity in filtering oil waste water, prevents it stifled
Fill in microchannel, and concave copper mesh prevents from being loaded and too fast causes to flow back.And strainer card slot 3 is designed in outlet 5, was used for
The fixation of strainer.It is total to be no more than first layer in circular substrate side for all functional areas components processed on the first layer
The 2/3 of top surface area.The centralized arrangement for all functional areas components processed on first layer, is conducive to the inspection of the substrate of third layer
The detection zone that brake component reserves convenient for observing up and down.
The second layer is machined with two layers of injection port 6 in the position of the outlet 5 of corresponding first layer.Two layers of injection port 6 are
The cylindrical channel of second layer substrate up and down.A circle is machined in the upper half cylindrical sidewalls of two layers of injection port 6
Cylinder card slot 14, can install the fixation cylinder 7 that secure fit uses, and fixed cylinder 7 fixes the one of two layers of 6 medium position of injection port
A organic matter absorbs and filters net.Such as: greasy dirt, organic matter are absorbed by installation carbon sponge.Organic matter absorbs and filters net by carbon sea
Tender fixed cylinder 7 is constituted.Absorption of the carbon sponge for greasy dirt and organic matter in petroleum wastewater, and adsorption strength is very
Good, the overall diameter of fixed cylinder 7 is equal to the diameter of carbon sponge.Carbon sponge is put into cylinder card slot 14 first, then will fixed cylinder 7
It is placed on carbon sponge, the height of fixed cylinder 7 is equal to the height of cylinder card slot 14, is conducive to the fixation of carbon sponge.Two layers of sample introduction
Mouth 6 does not have the third side of this side of processing component upward towards first layer, is machined with filtrate channel in the substrate bottom of the second layer
8.Filtrate channel 8 leads to filtrate outlet 9.Filtrate outlet 9 is one, and that Open Side Down is cylindrical, collects with the filtrate of third layer
Pond 11 communicates, and position is corresponding at the center that first layer does not have this side of processing component.
The third layer is machined with a round filtrate and receives at the center that corresponding first layer does not have this side of processing component
Collect pond 11, a filter screen is installed between filtrate collecting pit 11 and filtrate outlet 9.On the circumference of filtrate collecting pit 11 uniformly
Distribution is machined with 4 outward in the liquid separation channel 12 of petal-shaped diverging.Every dimensional parameters in every liquid separation channel 12 are consistent,
End is all communicated to a reaction detection pond 10.Reaction detection pond 10 is used to place the colorimetric with heavy metal ion reaction solution
Paper.The bottom water plane of reaction detection pond 10 and filtrate collecting pit 11 is below the bottom water plane in liquid separation channel 12.Filtrate is received
The depth for collecting pond 11 is lower than liquid separation channel 12, and filling up 11 filtrate collecting pit 11 of filtrate collecting pit when filtrate has height with liquid separation channel 12
When degree difference, filtrate is flowed by way of spilling in each reaction detection pond 10, ensure that the flow in each liquid separation channel 12 arrives
Amount up to reaction detection pond 10 is identical, keeps experimental result more acurrate.The depth in reaction detection pond 10 is also below liquid separation channel 12.It is anti-
The filtrate backflow pollution for entering reaction detection pond 10 filtrate collecting pit 11 is stopped.For example, when filtrate flows into reaction detection pond 10
After the colorimetric reaction solution in pond, prevent filtrate from flowing back into the filtrate of colour developing in filtrate collecting pit.Reaction detection pond 10
The colorimetric of the heavy metal ion reaction solution of placement after chromogenic reaction, compares, to determine with the standard color range plate of production
The concentration of heavy metal in petroleum wastewater.The utility model has micro, quick, conveniently, portable feature.
Above-mentioned technical proposal center is fitted with sealing when the first layer, the second layer, third layer are fixed between each other
Pad 13.Gasket 13 makes have better sealing between first layer and the second layer, the second layer and third layer, prevents leakage.Most
Afterwards, first layer, gasket, the second layer, gasket and third layer are successively assembled, and is fixed with steel needle.
Claims (2)
1. a kind of multi-layer micro-fluidic chips for detecting heavy metal ion, it is characterised in that: the chip is rounded or rectangle, by three
Layer shape and size are of the same size, substrate of transparent material fits together, and fixed with fixed pin by fixation hole, and can
Disassembly；
The substrate of the first layer, is machined with injection port on round or rectangle substrate side, and one end of sample intake passage connects
Connect injection port；Its other end is connected to outlet, and strainer card slot is machined in outlet, and strainer card slot is equipped with the mistake of concave
Strainer；The diameter dimension of the injection port is greater than the width dimensions of sample intake passage, and the bottom surface horizontal plane of injection port is logical lower than sample introduction
The bottom surface horizontal plane in road；All functional areas components processed on the first layer substrate, in round or rectangle substrate side,
No more than the 2/3 of the total top surface area of first layer substrate；
The substrate of the second layer is machined with two layers of injection port in the position of the outlet of the substrate of corresponding first layer；Two layers of sample introduction
Mouth is the cylindrical channel of second layer substrate up and down；One is machined in the upper half cylindrical sidewalls of two layers of injection port
Cylinder card slot, can install the fixation cylinder that secure fit uses, and fixed cylinder fixes one of two layers of injection port medium position
Organic matter absorbs and filters net；Two layers of injection port do not have the third side of this side of processing component upward towards first layer substrate,
Two layers of substrate bottom are machined with filtrate channel, and filtrate channel leads to filtrate outlet；Filtrate outlet be one Open Side Down circle
Cylindricality is communicated with the filtrate collecting pit of third layer substrate, and position correspondence does not have in this side of processing component in first layer substrate
Heart district；
The substrate of the third layer is machined with a circle at the center that the substrate of corresponding first layer does not have this side of processing component
Shape filtrate collecting pit is equipped with a filter screen between filtrate collecting pit and filtrate outlet；On the circumference of filtrate collecting pit
Even distribution is machined with 4 outward in the liquid separation channel of petal-shaped diverging；Every dimensional parameters in every liquid separation channel are consistent, end
Head is all communicated to a reaction detection pond；The bottom water plane of reaction detection pond and filtrate collecting pit is below the bottom in liquid separation channel
Portion's horizontal plane.
2. a kind of multi-layer micro-fluidic chips for detecting heavy metal ion according to claim 1, it is characterised in that: described the
When one layer of substrate, second layer substrate, third layer substrate are fixed, it is fitted with gasket between each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821443006.6U CN208902598U (en) | 2018-09-04 | 2018-09-04 | Detect the multi-layer micro-fluidic chips of heavy metal ion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821443006.6U CN208902598U (en) | 2018-09-04 | 2018-09-04 | Detect the multi-layer micro-fluidic chips of heavy metal ion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872081A (en) * | 2018-09-04 | 2018-11-23 | 重庆科技学院 | A kind of multi-layer micro-fluidic chips detecting heavy metal ion |
| CN110411963A (en) * | 2019-08-08 | 2019-11-05 | 重庆科技学院 | A kind of portable spectrophotometer of Heavy Metals in Waters ion detection |
| CN110568202A (en) * | 2019-09-12 | 2019-12-13 | 重庆科技学院 | automatic sample separation constant volume immunofluorescence quantitative rapid detection micro-fluidic chip |
-
2018
- 2018-09-04 CN CN201821443006.6U patent/CN208902598U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872081A (en) * | 2018-09-04 | 2018-11-23 | 重庆科技学院 | A kind of multi-layer micro-fluidic chips detecting heavy metal ion |
| CN110411963A (en) * | 2019-08-08 | 2019-11-05 | 重庆科技学院 | A kind of portable spectrophotometer of Heavy Metals in Waters ion detection |
| CN110568202A (en) * | 2019-09-12 | 2019-12-13 | 重庆科技学院 | automatic sample separation constant volume immunofluorescence quantitative rapid detection micro-fluidic chip |
| CN110568202B (en) * | 2019-09-12 | 2022-05-24 | 重庆科技学院 | Automatic sample separation constant volume immunofluorescence quantitative rapid detection micro-fluidic chip |
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