CN204479477U - A kind of liquid phase nitrite device for fast detecting - Google Patents
A kind of liquid phase nitrite device for fast detecting Download PDFInfo
- Publication number
- CN204479477U CN204479477U CN201520169635.4U CN201520169635U CN204479477U CN 204479477 U CN204479477 U CN 204479477U CN 201520169635 U CN201520169635 U CN 201520169635U CN 204479477 U CN204479477 U CN 204479477U
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- China
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- feeding pipe
- detector tube
- sample feeding
- piston
- push rod
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Abstract
The utility model discloses a kind of liquid phase nitrite device for fast detecting, the detector tube comprising sample feeding pipe and be made up of transparent material, sample feeding pipe and detector tube removably connect, and the upper end of sample feeding pipe is provided with the syringe needle for sucking testing liquid, is provided with filtering membrane in sample feeding pipe; In detector tube, piston is installed, region more than piston is reaction zone, reaction zone is built with reaction reagent, the detector tube outer wall of reaction zone is provided with than colour band, and the bottom of piston is rotatably connected with push rod, and on push rod, cover has extension spring, the upper end of extension spring is connected with the bottom of piston, push rod is provided with fixture block, and the lower end of detector tube is provided with draw-in groove, and fixture block can depart from or snap in draw-in groove.The utility model effectively can improve the degree of accuracy of detection, and simple to operate, and detection speed is fast, is applicable to any family and individual.
Description
Technical field
The utility model relates to a kind of nitrite pick-up unit, particularly relates to a kind of device for fast detecting of liquid phase nitrite.
Background technology
The quick detection of current nitrite is widely used in industry, agricultural and daily life.Content of nitrite in food, measures during owing to manually adding that wayward and food self can produce in storage and manufacture process and content be can not determine, easily causes excessive and causes food poisoning.Especially at the consumption terminal of food production chain, for want of final content of nitrite detects and affects food security.More homemade natural fermented food of consumer in addition, owing to being difficult to the content controlling nitrite, also there is the possibility that nitrite exceeds standard, such as there is the change of obvious content of nitrite during pickled vegetable making, the content of nitrite accessory substance that to be the mark of pickles maturation be also in sweat.Therefore the content of nitrite detected in food is fast and accurately very necessary.Current nitrite detects and usually adopts two kinds of methods: a kind of is kit with being equipped with biochemical reaction liquid, after adding liquid to be checked, colour developing is measured, this method need liquid to be measured to filter and quantitatively after add kit, application of sample constant volume operation wherein easily produces great metrical error to layman; Another kind method detects by nitrite test strips, and the method needs colorimetric interpretation net result equally, though easy, because in the water absorptivity of test strips, liquid phase, impurity and potential of hydrogen easily cause comparatively big error.Yet there are no energy accurately constant volume application of sample, filtration, reaction, colour developing, the report of the liquid phase nitrite reagent box of interpretation.
Summary of the invention
The purpose of this utility model be to provide a kind of can the liquid phase nitrite device for fast detecting of quick and precisely constant volume application of sample.
For achieving the above object, the solution that the utility model adopts is: a kind of liquid phase nitrite device for fast detecting, the detector tube comprising sample feeding pipe and be made up of transparent material, sample feeding pipe and detector tube removably connect, the upper end of sample feeding pipe is provided with the syringe needle for sucking testing liquid, is provided with filtering membrane in sample feeding pipe; In detector tube, piston is installed, region more than piston is reaction zone, reaction zone is built with reaction reagent, the detector tube outer wall of reaction zone is provided with than colour band, and the bottom of piston is rotatably connected with push rod, and on push rod, cover has extension spring, the upper end of extension spring is connected with the bottom of piston, push rod is provided with fixture block, and the lower end of detector tube is provided with draw-in groove, and fixture block can depart from or snap in draw-in groove.
Filtering membrane in above-mentioned sample feeding pipe is two.
Sample feeding pipe and detector tube are threaded connection part and are connected.
Above-mentioned syringe needle is connected by non-return valve with sample feeding pipe.
The lower end of above-mentioned push rod is provided with handle.
The utility model promotes piston by the elastic force of spring and produces negative pressure suction testing liquid, and can make sample introduction constant volume, thus effectively can improve the degree of accuracy of detection, in addition, the utility model is simple to operate, and detection speed is fast, is applicable to any family and individual.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-syringe needle, 2-non-return valve, 3-filtering membrane, 4-sample feeding pipe, 5-threaded connector, 6-detector tube 7-than colour band 8-piston 9-push rod 10-extension spring 11-fixture block 12-handle
Embodiment
As shown in Figure 1, the utility model comprises syringe needle 1, non-return valve 2, filtering membrane 3, sample feeding pipe 4, threaded connector 5, detector tube 6, than colour band 7, piston 8, push rod 9, extension spring 10, fixture block 11 and handle 12, sample feeding pipe 4 and detector tube 6 are threaded connection part 5 and are connected, with for convenience detach and installation, the upper end of sample feeding pipe 4 is provided with non-return valve 2, the excessive metrical error that causes of reactant liquor during to prevent non-detection after the excessive and sample introduction of internal solution increases, syringe needle 1 for sucking testing liquid is connected to non-return valve 2, syringe needle 1 is stamped needle cap when not using.Filtering membrane 3 is installed in sample feeding pipe 4, filtering membrane 3 is two, and connect every installing and passing through disposal molding technology plastic cement between the upper and lower, wherein the filter opening gap of upper level filter film 3 is larger, the filter opening of lower floor's filtering membrane 3 is less, and upper and lower two filtering membranes 3 play the effect of double filtration.Detector tube 6 is made up of transparent material, be provided with piston 8 in pipe, the region of piston more than 8 is reaction zone, and reaction zone is built with reaction reagent, the detector tube outer wall of reaction zone is provided with than colour band 7, the bottom of piston 8 is rotatably connected with push rod 9, and on push rod 9, cover has extension spring 10, and the upper end of extension spring 10 is connected with the bottom of piston 8, push rod 9 is provided with fixture block 11, its lower end is provided with handle 12, and the lower end of detector tube 6 is provided with draw-in groove, and fixture block 11 can depart from or snap in draw-in groove.
The utility model adopts and sample feeding pipe 4 and detector tube 6 is removably connected, conveniently replaced sample feeding pipe 4.Before testing, in detector tube 6, be filled with reaction reagent, after detection, again can aspirate reaction reagent with after distilled water flushing drying, and new sample feeding pipe 4 is installed and syringe needle 1 carries out next time new detection.
Use procedure of the present utility model is: take down needle cap, under syringe needle 1 is inserted testing liquid liquid level, rotating push rod 9, fixture block 11 on push rod 9 is thrown off with draw-in groove, now under spring 10 acts on, piston 8 advances downwards and makes to produce in sample feeding pipe negative pressure, syringe needle 1 starts to suck testing liquid, testing liquid first carries out large granular impurity filtration through upper level filter film 3 after entering sample feeding pipe 4, and then carry out granule contaminant filter through lower floor's filtering membrane 3, enter the reaction zone in detector tube 6 after basic clarification, and mix with the reagent in reaction zone.Because of the elastic constant of extension spring 10, advance distance is fixed, therefore sample introduction constant volume and make the accuracy of detection and stability higher.After candidate agent and testing liquid reaction solution, observe than colour band 7 through liquid, when the color of solvent is with time more close than the color in certain region of colour band 7, colour band and the solution colour in this region are obscured and almost can not differentiate, and the mark numerical value in this colour band region is the nitrite concentration value of solution to be measured.Conventional reagent in detector tube 6 is aminobenzene yellow acid solution, reacts generate diazo salt with nitrite, then generates redness with N-(1-naphthyl)-reacting ethylenediamine.
Claims (5)
1. a liquid phase nitrite device for fast detecting, it is characterized in that: the detector tube (6) comprising sample feeding pipe (4) and be made up of transparent material, sample feeding pipe (4) and detector tube (6) removably connect, the upper end of sample feeding pipe (4) is provided with the syringe needle (1) for sucking testing liquid, is provided with filtering membrane (3) in sample feeding pipe (4); Piston (8) is installed in detector tube (6), region more than piston (8) is reaction zone, reaction zone is built with reaction reagent, the detector tube outer wall of reaction zone is provided with than colour band (7), the bottom of piston (8) is rotatably connected with push rod (9), the upper cover of push rod (9) has extension spring (10), the upper end of extension spring (10) is connected with the bottom of piston (8), push rod (9) is provided with fixture block (11), the lower end of detector tube (6) is provided with draw-in groove, and fixture block (11) can depart from or snap in draw-in groove.
2. a kind of liquid phase nitrite device for fast detecting according to claim 1, is characterized in that: the filtering membrane (3) in sample feeding pipe (4) is two.
3. a kind of liquid phase nitrite device for fast detecting according to claim 1, is characterized in that: sample feeding pipe (4) and detector tube (6) are threaded connection part (5) and are connected.
4. a kind of liquid phase nitrite device for fast detecting according to claim 1, is characterized in that: syringe needle (1) is connected by non-return valve (2) with sample feeding pipe (4).
5. a kind of liquid phase nitrite device for fast detecting according to claim 1, is characterized in that: the lower end of described push rod (9) is provided with handle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169635.4U CN204479477U (en) | 2015-03-24 | 2015-03-24 | A kind of liquid phase nitrite device for fast detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169635.4U CN204479477U (en) | 2015-03-24 | 2015-03-24 | A kind of liquid phase nitrite device for fast detecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479477U true CN204479477U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520169635.4U Expired - Fee Related CN204479477U (en) | 2015-03-24 | 2015-03-24 | A kind of liquid phase nitrite device for fast detecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204479477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290515A (en) * | 2016-04-11 | 2017-10-24 | 福因德科技（武汉）有限公司 | High flux immunoassay device |
| CN107290548A (en) * | 2016-04-11 | 2017-10-24 | 福因德科技（武汉）有限公司 | Ectopic pregnancy detection means |
-
2015
- 2015-03-24 CN CN201520169635.4U patent/CN204479477U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290515A (en) * | 2016-04-11 | 2017-10-24 | 福因德科技（武汉）有限公司 | High flux immunoassay device |
| CN107290548A (en) * | 2016-04-11 | 2017-10-24 | 福因德科技（武汉）有限公司 | Ectopic pregnancy detection means |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160324 |