CN105092305A - Sample feeding needle for liquid sample collection - Google Patents
Sample feeding needle for liquid sample collection Download PDFInfo
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- CN105092305A CN105092305A CN201510593505.8A CN201510593505A CN105092305A CN 105092305 A CN105092305 A CN 105092305A CN 201510593505 A CN201510593505 A CN 201510593505A CN 105092305 A CN105092305 A CN 105092305A
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- China
- Prior art keywords
- tube
- introduction needle
- sample introduction
- liquid
- carbon fiber
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Abstract
The invention provides a sample feeding needle for liquid sample collection. The sample feeding needle comprises a capillary hose. An outer layer of one end of the capillary hose is sleeved with a hard pipe, a carbon fiber pipe and a long thermal plastic pipe from inside to outside. The hard pipe and the carbon fiber pipe are wrapped by the long thermal plastic pipe to be fixed to the outer layer of the capillary hose. The sample feeding needle has the advantages of being simple in structure, low in manufacturing cost, not prone to breakage and fully resistant to acid-base corrosion and has certain bending performance, and strength is improved greatly.
Description
Technical field
The present invention relates to a kind of fluid sample sampler, particularly relate to a kind of liquid sample collecting sample introduction needle.
Background technology
Atomic fluorescence spectrophotometer is a kind of chemical analysis instrument for measuring element trace level content in sample.Its principle of work utilizes chemical method to make tested element generation chemical reaction generate hydride, by atomizer outlet through lighting formation flame, light source activation is utilized to contain the flame of tested element, tested element produces atomic fluorescence after obtaining energy jump, by measuring the intensity of atomic fluorescence, calculate tested constituent content by analysis.Need in instrument work to connect automatic sampler, draw liquid sample by sample introduction needle, carry out analysis and detect.The sample introduction needle adopted in prior art is the end of tubular needle that quartz glass makes internal diameter 1mm external diameter 3mm, length more than 200 millimeter, although the acid and alkali corrosion of sample well can be tolerated, but still there is following drawback: 1. frangibility, because of the tubular structure that sample introduction needle is elongated, in use and in instrument maintenance servicing operations, be easy to cause sample introduction needle to fracture, and then affect the continuity of testing; 2. manufacture difficulty is large, and cost is high.Because of the singularity of its material and the elongated feature of size, sample introduction needle inwall poor quality controls, and cost is very high.
Summary of the invention
The object of this invention is to provide a kind of liquid sample collecting sample introduction needle, its structure is simple, and cost of manufacture is cheap, and intensity improves very large, has certain bending property, the not complete tolerance acid-base corrosion of frangibility.
Technical scheme of the present invention is: a kind of liquid sample collecting sample introduction needle, comprise capillary soft tube, be respectively installed with hard tube, carbon fiber pipe and long thermoplastic tube from inside to outside at the skin of described capillary soft tube one end, described hard tube and carbon fiber pipe are wrapped on the skin of capillary soft tube by long thermoplastic tube.
Further, the material of described capillary soft tube is teflon.
Further, the material of described hard tube is teflon.
Further, reinforced the connection by short thermoplastic tube at the afterbody of described long thermoplastic tube.
Further, the angle of inclination of described sample introduction needle liquid feeding end is 120 degree of-180 degree.
Further, the angle of inclination of described sample introduction needle liquid feeding end is 150 degree.
The advantage that the present invention has and good effect are: the invention provides the sample introduction needle that a kind of brand-new material makes, the capillary soft tube overcoat carbon fiber pipe adopting teflon material to make supports, the hard tube that the teflon material being aided with thick specification between capillary soft tube and carbon fiber pipe is made, the long thermoplastic tube of external overall wraps, its intensity improves very large, there is certain bending property, the not complete tolerance acid-base corrosion of frangibility.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
1, carbon fiber pipe 2, hard tube 3, capillary soft tube
4, long thermoplastic tube 5, short thermoplastic tube
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Shown in structural representation as of the present invention in Fig. 1, the invention provides a kind of liquid sample collecting sample introduction needle, comprise capillary soft tube 3, be respectively installed with hard tube 2, carbon fiber pipe 1 and long thermoplastic tube 4 from inside to outside at the skin of described capillary soft tube 3 one end, described hard tube 2 and carbon fiber pipe 1 are wrapped on the skin of capillary soft tube 3 by long thermoplastic tube 4.
The material of described capillary soft tube 3 is teflon.The material of described hard tube 2 is teflon.Reinforced the connection by short thermoplastic tube 5 at the afterbody of described long thermoplastic tube 4.
The angle of inclination of described sample introduction needle liquid feeding end is 120 degree of-180 degree.The angle of inclination of described sample introduction needle liquid feeding end is 150 degree.
The course of work of this example: the invention provides the sample introduction needle that a kind of brand-new material makes, the capillary soft tube 3 overcoat carbon fiber pipe 1 adopting teflon material to make supports, the hard tube 2 that the teflon material being aided with thick specification between capillary soft tube 3 and carbon fiber pipe 1 is made, the long thermoplastic tube 4 of external overall wraps, its intensity improves very large, reinforced the connection by short thermoplastic tube 5 at the afterbody of described long thermoplastic tube 4, there is certain bending property, the not complete tolerance acid-base corrosion of frangibility, sample introduction needle liquid feeding end angle of inclination be 150, facilitate imbitition sample.The complete tolerance acid-base corrosion of sample introduction needle, and its intensity improves very large, has certain bending property, not frangibility.Cost significantly reduces, and by original 300 yuan/, is reduced to less than 30 yuan/props up.More because its design feature, the capillary soft tube pipette samples that inner core is made by a through teflon, the quartz glass tube sample introduction needle comparatively connects the mode of capillary soft tube pipette samples again, and fluid sample circulation is more unobstructed.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (6)
1. a liquid sample collecting sample introduction needle, it is characterized in that: comprise capillary soft tube (3), be respectively installed with hard tube (2), carbon fiber pipe (1) and long thermoplastic tube (4) from inside to outside at the skin of described capillary soft tube (3) one end, described hard tube (2) and carbon fiber pipe (1) are wrapped on the skin of capillary soft tube (3) by long thermoplastic tube (4).
2. liquid sample collecting sample introduction needle according to claim 1, is characterized in that: the material of described capillary soft tube (3) is teflon.
3. liquid sample collecting sample introduction needle according to claim 1, is characterized in that: the material of described hard tube (2) is teflon.
4. liquid sample collecting sample introduction needle according to claim 1, is characterized in that: reinforced the connection by short thermoplastic tube (5) at the afterbody of described long thermoplastic tube (4).
5. liquid sample collecting sample introduction needle according to claim 1, is characterized in that: the angle of inclination of described sample introduction needle liquid feeding end is 120 degree of-180 degree.
6. liquid sample collecting sample introduction needle according to claim 1, is characterized in that: the angle of inclination of described sample introduction needle liquid feeding end is 150 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593505.8A CN105092305A (en) | 2015-09-17 | 2015-09-17 | Sample feeding needle for liquid sample collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593505.8A CN105092305A (en) | 2015-09-17 | 2015-09-17 | Sample feeding needle for liquid sample collection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105092305A true CN105092305A (en) | 2015-11-25 |
Family
ID=54573231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510593505.8A Pending CN105092305A (en) | 2015-09-17 | 2015-09-17 | Sample feeding needle for liquid sample collection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105092305A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197087A (en) * | 2012-01-09 | 2013-07-10 | 北京瑞利分析仪器有限公司 | Automatic sampler sampling needle used for strong acidic solution |
| CN205079964U (en) * | 2015-09-17 | 2016-03-09 | 天津港东科技发展股份有限公司 | Liquid is syringe for sample collection |
-
2015
- 2015-09-17 CN CN201510593505.8A patent/CN105092305A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197087A (en) * | 2012-01-09 | 2013-07-10 | 北京瑞利分析仪器有限公司 | Automatic sampler sampling needle used for strong acidic solution |
| CN205079964U (en) * | 2015-09-17 | 2016-03-09 | 天津港东科技发展股份有限公司 | Liquid is syringe for sample collection |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |