CN206583620U - Sample introduction needle - Google Patents
Sample introduction needle Download PDFInfo
- Publication number
- CN206583620U CN206583620U CN201720152863.XU CN201720152863U CN206583620U CN 206583620 U CN206583620 U CN 206583620U CN 201720152863 U CN201720152863 U CN 201720152863U CN 206583620 U CN206583620 U CN 206583620U
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- CN
- China
- Prior art keywords
- sample introduction
- syringe
- introduction needle
- sample
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a kind of sample introduction needle, and the sample introduction needle includes：Syringe；Sample feeding rod, the sample feeding rod is movably disposed in syringe；Syringe needle, is connected with syringe, wherein, sample introduction needle also includes：First sleeve, is connected with the first end of syringe；Seal assembly, is arranged in first sleeve, and the sample feeding rod passes through seal assembly.Also, it is difficult that closure, durable and air-tightness are good according to sample introduction needle of the present utility model, and structure is relatively easy, and part is relatively fewer.It is additionally, since the use of seal assembly so that sample introduction needle has super good sealing effectiveness.
Description
Technical field
The utility model, which is related to one kind, is used for petrochemical industry, coal chemical technology, field of medicaments, field of metallurgy, specifically
For, it is related to a kind of sample introduction needle.
Background technology
At present, widely used Fig. 1 and Fig. 2 shown devices carry out sample introduction.During using device sample introduction shown in Fig. 1, if
It is alfin mixture sample introduction, because methanol boiling point is high, boiling olefins are extremely low, it is necessary to the sample in bottle 1 is gasified totally, and again can not
Heating makes its Quick-gasifying (having explosion danger), so it is (small about two or three for a period of time to can be only placed at long enough at room temperature
When), gasification is waited, finally determines gaseous sample into gas chromatographic analysis.The whole process duration is oversize, it is impossible to quick
Instruct technique productions.
During using method sample introduction shown in Fig. 2, sampled using hard glass bottle 2, use airtight sample introduction needle sample introduction, sample
Undistorted, the degree of accuracy is high.However, such a pressure-resistant airtight sample introduction needle is sealed due to sealing system using pad 3, pad is being used
During scaling-off, frequent closure syringe needle (not shown), and such a sample introduction needle part is more, and manufacture production is difficult, and spoilage is high, makes
Greatly improved into entreprise cost.
In summary, design sample introduction needle that is a kind of durable, airtight and being difficult closure and seem particularly urgent.
Utility model content
Main purpose of the present utility model is to provide a kind of sample introduction needle, to solve sample introduction needle durability of the prior art
Poor problem.
To achieve these goals, the utility model provides a kind of sample introduction needle, and the sample introduction needle includes：Syringe；Sample feeding rod,
The sample feeding rod is movably disposed in syringe；Syringe needle, is connected with syringe, wherein, sample introduction needle also includes：First sleeve, with pin
The first end connection of cylinder；Seal assembly, is arranged in first sleeve, and the sample feeding rod passes through seal assembly.
Further, seal assembly includes rubber pad ring and is arranged on above rubber pad ring and for extruding rubber pad ring
Nut is extruded, sample feeding rod passes through extruding nut and rubber pad ring.
Further, sample introduction needle also includes the control valve being connected with the second end of syringe, and syringe needle is detachably connected to control
Valve.
Further, syringe is detachably connected in a part for the valve body of control valve.
Further, sample introduction needle also includes the second sleeve pipe, and the valve body of control valve is located in the second sleeve pipe.
Further, sample introduction needle also includes the 3rd sleeve pipe being connected with control valve, and the 3rd sleeve pipe is fixedly connected with syringe needle, and
And a part for syringe needle is removably embedded in the valve body of control valve.
Further, sample feeding rod includes the body of rod and head, and head is made up of polytetrafluoroethylmaterial material.
Further, the valve body of control valve is made up of polytetrafluoroethylmaterial material, and the inner surface of the second sleeve pipe includes polytetrafluoro
Vinyl material layer.
Further, extruding nut is regular hexahedron or regular octahedron.
Further, control valve includes pull bar valve or ball valve.
Further, diameter of the head along the length direction perpendicular to sample feeding rod is more than the diameter of the body of rod.
Using the technical solution of the utility model, due to adding first sleeve and seal assembly compared with prior art, adopt
Sample feeding rod is protected with first sleeve, seal assembly sealing syringe so efficiently solves sample introduction needle of the prior art durable
Property poor problem.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows a kind of schematic diagram of sampling device in the prior art；
Fig. 2 shows the schematic diagram of another sampling device in the prior art；And
Fig. 3 shows the structural representation of the sample introduction needle according to a preferred embodiment of the present utility model.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
1st, bottle；2nd, hard glass bottle；3rd, pad；10th, sample feeding rod；11st, head；20th, nut is extruded；30th, syringe；40、
Rubber pad ring；51st, valve element；53rd, valve rod；57th, valve handle；59th, valve body；60th, the second sleeve pipe；70th, syringe needle；80th, the 3rd sleeve pipe；90、
First sleeve.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Shown in reference picture 3, it illustrates the structural representation according to one preferred embodiment of the utility model.As schemed
Show, the sample introduction needle includes：Sample feeding rod 10, syringe 30 and syringe needle 70, wherein, syringe 30 is for example made up of glass material, sample feeding rod
10 are movably disposed in syringe 30, and syringe needle 70 is connected with syringe 30.
Further, the sample introduction needle also includes the first sleeve 90 for being arranged on the first end of syringe 30, the first sleeve 90
It is connected, for example, is bonded by gluing with the first end of syringe 30.Seal assembly for sealing syringe 30 is arranged on first sleeve
In 90, sample feeding rod 10 passes through seal assembly.As illustrated, according to the embodiment, seal assembly includes rubber pad ring 40 and set
Extruding nut 20 above rubber pad ring 40 and for extruding rubber pad ring 40.Sample feeding rod 10 passes through extruding nut 20 and rubber
Gasket ring 40.Sealed using rubber pad ring 40 and using the extruding regulation feel of nut 20, make sample introduction needle good sealing effect, firmly fit
In, feel is good.
Preferably, the sample feeding rod 10 includes the body of rod and is arranged on the head 11 of end, and the head 11 is preferably by polytetrafluoro
Vinyl material is made, thus sample introduction club head not by pyrocondensation it is cold rise and wear and tear influenceed, also, due to polytetrafluoroethylene (PTFE) have it is resistance to
Mill, therefore in the absence of the phenomenon of scaling-off closure syringe needle, so that good seal.According to one side of the present utility model, the edge of head 11
It is more than the diameter of the body of rod perpendicular to the diameter of the length direction of sample feeding rod, so as to further enhance sealing property.
Preferably, according to an embodiment of the present utility model, sample introduction needle can also include the other end with syringe 30, i.e.
The control valve of second end connection, syringe needle 70 is connected with control valve, so as to optionally control the company of syringe 30 and syringe needle 70
It is logical.Optionally, the control valve can be pull bar valve, can also be substituted with ball valve.The present embodiment is said by taking pull bar valve as an example
It is bright, but the control valve and it is limited to this.
Pull bar valve as shown in Figure 3, is connected by pull bar needle cylinder 30 with syringe needle, the pull bar valve including valve element 51,
Valve rod 53, the valve handle 57 and valve body 59 being connected with valve rod 53.Syringe needle 70 can be directly fixedly connected on the pull bar valve.The pull bar
The valve body 59 of valve is made using polytetrafluoroethylmaterial material, and being provided with valve rod 53 can be with the sample that is set along sample introduction needle longitudinal direction
There are pore channels (as shown in Figure 3) on the valve element 51 of passage connection, valve element 51, make the aperture on valve element 51 by adjusting valve handle 57
Passage is connected with sample channel, so that the syringe needle 70 being connected with pull bar valve is connected with sample channel.The valve rod 53 of pull bar valve
It is made of metal, and because valve body 59 is made up of polytetrafluoroethylmaterial material, so that it is good with abrasion resistant effect, so being not present
Slag blocks the phenomenon of syringe needle.
Preferably, syringe 30 can be embedded in the part of valve body 59 of control valve.And sample introduction needle also includes the second sleeve pipe
60, the valve body 59 is located in the second sleeve pipe 60, so that, syringe 30 and valve body 59 are linked together by the second sleeve pipe 60.Example
Such as, second sleeve pipe be metal tube so that, valve body 59 can also by second sleeve pipe 60 protection.Preferably, this second set
The inner surface of pipe 60 includes polytetrafluoroethylmaterial material layer, so as to extend the service life of pull bar valve, strengthens sample introduction needle body junction
Structure intensity.
Preferably, sample introduction needle can further include the 3rd sleeve pipe 80 being connected with pull bar valve, the 3rd sleeve pipe 80 and pin
First 70 are fixedly connected, and the top half of syringe needle 70 is also removably embedded in the sub-fraction of valve body 59, the 3rd sleeve pipe 80
Nestle, but be not connected to valve body 59, firmly syringe needle 70 can be extracted, so that in use, syringe needle is bent over, fractureed, can
With the whole module of the 3rd sleeve pipe 80 directly changed syringe needle 70 and be secured to connection, without changing sample introduction needle main body,
Reduce enterprise procurement cost.Preferably, the 3rd sleeve pipe 80 is also made up of polytetrafluoroethylmaterial material.Preferably, nut 20 is extruded
For regular hexahedron or regular octahedron, so as to reduce the risk that sample introduction needle drops or easily broken into pieces when tumbling.
According to sample introduction needle of the present utility model before use, can be freezed, it can also use again under normal temperature, and will
The freezing of alfin mixture is used, and effect is fabulous.Before alfin mixture sample introduction, first sample introduction needle is freezed, taken out after freezing
Sample introduction needle, adjusting yoke valve valve rod so that pull bar valve is in an open position.It is sufficiently displaced from sample introduction needle, i.e. by sample introduction needle with accommodating
Need the device of the sample of test to be connected, and required sample is fitted into sample introduction needle, by pull sample feeding rod repeatedly, sample exists
Flushing channel inwall repeatedly in sample channel, so as to reach the purpose of displacement sample, is replaced, sampling to the volume needed,
Valve rod is closed, sample introduction needle is extracted out, gas-chromatography is inserted the needle into rapidly, valve rod is opened, sample feeding rod is pressed, syringe needle is extracted out.Then
Gathered data, so as to complete analysis.
As can be seen from the above description, the utility model the above embodiments realize following technique effect：
The sample introduction needle is difficult that closure, durable and air-tightness are good, and the structure of the sample introduction needle is relatively easy, and part phase
To less.Because one end relative with head of sample feeding rod is sealed using rubber pad ring, so that with super good sealing effectiveness.And
And, because valve body and sample introduction club head use polytetrafluoroethylmaterial material, so that in the absence of the phenomenon of scaling-off closure syringe needle.Syringe needle can
Releasably it is connected in the second sleeve pipe, so that in use, syringe needle is bent over, fractureed, can directly changes syringe needle, without
Need to change sample introduction needle main body, reduce enterprise procurement cost.Furthermore, the valve body of control valve is located in the second sleeve pipe, so as to increase
The service life of control valve, strengthens the structural strength of sample introduction needle main body.The extruding nut of regular hexahedron or regular octahedron cause into
Sample pin is difficult to tumble and broken into pieces.In addition, the production process of the sample feeding rod is relatively easy, improves production efficiency and save into
This.Furthermore, the sample introduction needle not only can be under freezing conditions using can also use at normal temperatures.Moreover, low boiling and higher boiling
Mixture gasification sample introduction sample is also undistorted, so as to provide more reliable analyze data.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (11)
1. a kind of sample introduction needle, including：
Syringe (30)；
Sample feeding rod (10), the sample feeding rod (10) is movably disposed in the syringe (30)；
Syringe needle (70), is connected with the syringe (30),
Characterized in that, the sample introduction needle also includes：
First sleeve (90), is connected with the first end of the syringe (30)；
Seal assembly, is arranged in the first sleeve (90) and seals the syringe (30), and the sample feeding rod (10) passes through institute
State seal assembly.
2. sample introduction needle according to claim 1, it is characterised in that the seal assembly includes rubber pad ring (40) and set
Extruding nut (20) above the rubber pad ring (40) and for extruding the rubber pad ring (40), the sample feeding rod (10)
Through the extruding nut (20) and the rubber pad ring (40).
3. sample introduction needle according to claim 1, it is characterised in that the sample introduction needle also includes the with the syringe (30)
The control valve of two ends connection, the syringe needle (70) is detachably connected to the control valve.
4. sample introduction needle according to claim 3, it is characterised in that the syringe (30) is detachably connected to the control valve
Valve body (59) a part in.
5. sample introduction needle according to claim 4, it is characterised in that the sample introduction needle also includes the second sleeve pipe (60), described
The valve body (59) of control valve is located in second sleeve pipe (60).
6. sample introduction needle according to claim 3, it is characterised in that the sample introduction needle also includes the 3rd be connected with control valve
Sleeve pipe (80), the 3rd sleeve pipe (80) is fixedly connected with the syringe needle (70), and the syringe needle (70) is a part of removable
It is embedded in the valve body (59) of the control valve with unloading.
7. sample introduction needle according to any one of claim 1 to 6, it is characterised in that the sample feeding rod (10) includes the body of rod
With head (11), the head (11) is made up of polytetrafluoroethylmaterial material.
8. sample introduction needle according to claim 5, it is characterised in that the valve body (59) of the control valve is by polytetrafluoroethylene (PTFE) material
Material is made, and the inner surface of second sleeve pipe (60) includes polytetrafluoroethylmaterial material layer.
9. sample introduction needle according to claim 2, it is characterised in that the extruding nut (20) is regular hexahedron or positive octahedral
Body.
10. sample introduction needle according to claim 3, it is characterised in that the control valve includes pull bar valve or ball valve.
11. sample introduction needle according to claim 7, it is characterised in that the head (11) is along perpendicular to the sample feeding rod
The diameter of length direction is more than the diameter of the body of rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152863.XU CN206583620U (en) | 2017-02-20 | 2017-02-20 | Sample introduction needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152863.XU CN206583620U (en) | 2017-02-20 | 2017-02-20 | Sample introduction needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206583620U true CN206583620U (en) | 2017-10-24 |
Family
ID=60091791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720152863.XU Active CN206583620U (en) | 2017-02-20 | 2017-02-20 | Sample introduction needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206583620U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398396A (en) * | 2019-08-22 | 2019-11-01 | 中国航空油料有限责任公司浙江分公司 | A kind of aviation fuel thief-sampler syringe |
| CN110887931A (en) * | 2019-11-20 | 2020-03-17 | 华中科技大学 | Photocatalytic portable water quality total organic carbon detection device and method |
-
2017
- 2017-02-20 CN CN201720152863.XU patent/CN206583620U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398396A (en) * | 2019-08-22 | 2019-11-01 | 中国航空油料有限责任公司浙江分公司 | A kind of aviation fuel thief-sampler syringe |
| CN110398396B (en) * | 2019-08-22 | 2020-06-30 | 中国航空油料有限责任公司浙江分公司 | Aviation oil water detector syringe |
| CN110887931A (en) * | 2019-11-20 | 2020-03-17 | 华中科技大学 | Photocatalytic portable water quality total organic carbon detection device and method |
| CN110887931B (en) * | 2019-11-20 | 2021-05-18 | 华中科技大学 | Photocatalytic portable water quality total organic carbon detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |