CN206300963U - A kind of precision trace sampling apparatus and sampling probe - Google Patents
A kind of precision trace sampling apparatus and sampling probe Download PDFInfo
- Publication number
- CN206300963U CN206300963U CN201621331087.1U CN201621331087U CN206300963U CN 206300963 U CN206300963 U CN 206300963U CN 201621331087 U CN201621331087 U CN 201621331087U CN 206300963 U CN206300963 U CN 206300963U
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- China
- Prior art keywords
- closing member
- nook closing
- sampling
- outer tube
- sampling probe
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Abstract
The utility model provides a kind of sampling probe, the structure such as including nook closing member, outer tube, insulating sleeve.Nook closing member is the tubular structure of right-angle bending, and one end is connected with equipment, and the other end is used to sample, the caliber of nook closing member sampling end is tapered downwards, end size be less than other parts, sampling needle take sample run up when leaving liquid level hang liquid possibility substantially reduce, while also improving the accuracy of sampling.The outer wall suit outer tube of nook closing member, is provided with insulating sleeve between nook closing member and outer tube, and nook closing member constitutes capacitance structure with outer tube.Capacitance keeps constant between nook closing member and outer tube, when nook closing member touches liquid level, change can suddenly occur in capacitance, be now considered as nook closing member and touch liquid level just, need not be extended downwardly on the basis of sampling is guaranteed excessively, it also avoid the probability for pollution occur.The utility model also provides a kind of precision trace sampling apparatus, it is possible to achieve identical technique effect.
Description
Technical field
The utility model is related to trace reagent sampling technique field, further relates to a kind of precision trace sampling apparatus
And sampling probe.
Background technology
, it is necessary to sample and reagent are sampled and are loaded in full-automatic albumen instrument, current mode of operation is with taking
Sampling device is carried out the absorption of sample and is spued by sampling probe.As shown in figure 1, for a kind of structure of sampling probe in the prior art is shown
It is intended to.Sampling probe at this stage is essentially all that a stainless steel tube polishing is made.One end is fixed on sample arm, and the other end is used
To draw sample, upper end flexible pipe is connected in sample-adding pump.Because sample needle is a columnar tubular structure, can exist during sampling
Situations such as liquid and cross pollution is hung, can there is bubble phenomenon in discharge sample, accuracy rate is not high.
For a person skilled in the art, a kind of low micro sample-adding pin of cross pollution rate how is designed, is current
The technical issues that need to address.
Utility model content
The utility model provides a kind of sampling probe, and sampling is accurate, can avoid the occurrence of pollution.Concrete scheme is as follows：
A kind of sampling probe, including：
The nook closing member of rectangular bending, the sampling end of the nook closing member sets caliber tapered configuration；
Be set in the nook closing member outside, can with the nook closing member constitute electric capacity outer tube；
It is arranged at the insulating sleeve between the nook closing member and the outer tube.
Alternatively, the tapered configuration of the sampling end of the nook closing member includes closing in and the needle point of taper, the end of the needle point
Groove is set.
Alternatively, the two ends of the outer tube set the spacer ring of annular, and the spacer ring can be by the outer tube and institute
State nook closing member centering isolation.
Alternatively, also including catch, the outer tube is vertical with the plate face of the catch to be fixed；Open up solid on the catch
Determine hole and location hole, the outer tube inserting is fixed in the fixing hole.
Alternatively, the catch includes orthogonal two plate faces；Also include sensor mounting hole on the catch；Institute
State mounting hole axially vertical with the fixing hole.
Alternatively, the end of the nook closing member sets collar nut.
Alternatively, the catch passes through to be welded and fixed with the outer tube or glue sticking is fixed.
Additionally, the utility model also provides a kind of precision trace sampling apparatus, including the sampling probe described in any of the above-described.
The utility model provides a kind of sampling probe, the structure such as including nook closing member, outer tube, insulating sleeve.Nook closing member is right angle
The tubular structure of bending, one end is connected with equipment, and the other end is used to sample, and the caliber of nook closing member sampling end is tapered downwards, end chi
It is very little less than other parts, sampling needle take sample run up when leaving liquid level hang liquid possibility substantially reduce, while also carrying
The accuracy of sampling high.
The outer wall suit outer tube of nook closing member, is provided with insulating sleeve, nook closing member and outer tube structure between nook closing member and outer tube
Into capacitance structure.Capacitance keeps constant between nook closing member and outer tube, and when nook closing member touches liquid level, capacitance can occur suddenly
Change, is now considered as nook closing member and touches liquid level just, need not be extended downwardly on the basis of sampling is guaranteed excessively, also keeps away
The probability for pollution occur is exempted from.
Additionally, the utility model also provides a kind of precision trace sampling apparatus, it is possible to achieve identical technique effect.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of sampling probe of prior art；
The axle geodesic structure figure of the sampling probe that Fig. 2 is provided for the utility model；
The sectional structure chart of the sampling probe that Fig. 3 is provided for the utility model；
Fig. 4 is the local structural graph of nook closing member sampling end；
Fig. 5 is the axle geodesic structure figure of catch.
Including：
Nook closing member 1, spacer ring 2, outer tube 3, collar nut 4, catch 5, insulating sleeve 6.
Specific embodiment
Core of the present utility model is to provide a kind of sampling probe, and sampling is accurate, can avoid the occurrence of pollution.
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with accompanying drawing and
Specific embodiment, the sampling probe to the application is described in detail explanation.
As shown in Figures 2 and 3, the axle geodesic structure figure and cross-section structure of sampling probe respectively provided by the utility model
Figure, including：The structures such as nook closing member 1, outer tube 3, insulating sleeve 6.Nook closing member 1 is the structure of right-angle bending, including orthogonal two
Segment structure, has one section of bend pipe of circular arc transition between two sections.One end of nook closing member 1 is connected with precision trace sampling apparatus, separately
One end is used to sample and tell sample.Nook closing member 1 sampling end at least provided with the tapered structure of one section of caliber, when the sampling of nook closing member 1 takes liquid
Area with sample contact is smaller, can substantially reducing for liquid is hung when liquid level is left after the completion of sampling, so as to avoid unexpected drop
Fall and pollute elsewhere；Simultaneously as hang the reduction of liquid energy power, it is to avoid retaining for surplus liquid, so that taking liquid
Levels of precision is higher.
Outer tube 3 is set in the outside of nook closing member 1, has certain space between outer tube 3 and nook closing member 1, and two structures are equal
It is conductive structure, and is not turned on each other, capacity effect can be produced；Nook closing member 1 is metal material, and surfaces externally and internally is by polishing
Treatment.Insulating sleeve 6 is arranged between nook closing member 1 and outer tube 3, the cylindrical tubular structure that insulating sleeve 6 is made for insulating materials,
Make nook closing member 1 and the mutually insulated of outer tube 3, a complete electric capacity collectively formed by nook closing member 1, insulating sleeve 6 and outer tube 3,
When electric capacity is constituted, nook closing member 1 and outer tube 3 are connected to the two poles of the earth of power supply by two wires respectively, and centre is exhausted by insulating sleeve 6
Edge is isolated.Insulating sleeve 6 and outer tube 3 are arranged on distance sampling end remote position, namely near the right-angle folding kinking of nook closing member 1
Structure side.
Using the utility model provide sampling probe, can the tapered structure of sampling end serve prevent hang liquid effect,
Make the amount of sampling more accurate, while being not easy to pollute.Nook closing member 1, insulating sleeve 6 and outer tube 3 together constitute electric capacity
Structure, detects whether nook closing member 1 touches liquid level by capacity effect, when nook closing member 1 touches liquid level, equivalent to nook closing member 1
Area expands immediately, changes capacitance, and whether liquid level is touched by the variation sensing nook closing member 1 of electric capacity, therefore can in liquid feeding
Only drop to liquid level, reduce the probability of cross pollution between instrument, while decreasing the cleaning depth of nook closing member 1.
On the basis of such scheme, the utility model provides a kind of concrete structure of sampling end herein, as shown in figure 4,
It is the local structural graph of nook closing member sampling end.The tapered configuration of the sampling end of nook closing member 1 includes close up 101 and needle point 102, closing in 101
In the cone structure that downward diameter reduces, the upper end of closing in 101 is identical with the size of the top of nook closing member 1, and lower section tapered diameter is minimum
Place is identical with the size of needle point 102, and needle point 102 is one section of isometrical tubular structure.Further, set in the end of needle point 102
Put groove 103.One fritter wedge shape gap, when nook closing member 1 gos deep into below liquid level discharge sample, sampling needle are set on needle point 102
The sealing bubble that can be spued in nook closing member 1, because the front end of needle point 102 offers groove 103, bubble can be floating from the discharge of groove 103
To more than liquid level, it is to avoid bubble is bonded on the side wall of reaction cup and bottom.
The spacer ring 2 of annular is set at the two ends of outer tube 3, spacer ring 2 can isolate outer tube 3 with the centering of nook closing member 1.Every
Ring 2 is filled among outer tube 3, centre insertion nook closing member 1.Spacer ring 2 at least provided with two, respectively positioned at the upper end of outer tube 3 and under
End, the position for limiting the length direction of outer tube 3, the possibility of insulating sleeve 6 cannot make nook closing member 1 and outer tube 3 keep concentric,
Therefore setting two spacer rings 2 makes outer tube 3 and nook closing member 1 keep concentric.Spacer ring 2 is insulating materials, can be rubber ring etc..
In any of the above-described technical scheme and its on the basis of being mutually combined, the sampling probe also includes catch 5, outer tube 3 with
The plate face of catch 5 is vertically fixed, and catch 5 and outer tube 3 can be by being welded and fixed or glue sticking is fixed, as long as can play solid
Fixed effect is all possible.The structure such as catch 5 and outer tube 3 is fixed as one.The axis direction of outer tube 3 is perpendicular to catch
5 plate face.Fixing hole 502 and location hole 503 are opened up in the plate face of catch 5, the inserting of outer tube 3 is fixed on the fixing hole
In 502, location hole 503 is used to be cooperated with the counter structure on precision trace sampling apparatus and fixes, so that whole sampling
Pin is located at specific position.
Specifically, as shown in figure 5, being the axle geodesic structure figure of catch 5.Catch 5 at least includes orthogonal two plate faces；
Also include sensor mounting hole 501 on catch 5, for install sensor；Mounting hole 501 is axially vertical with fixing hole 502,
That is fixing hole 502 and location hole 503 is opened on the side side of catch 5, and sensor mounting hole 501 is arranged on another vertical
In plate face.Sensor is used to detect whether whole sampling probe individually motion occurs, if the abnormal movement of appearance, fills control
Put stop motion, it is to avoid damaging occurs in sampling probe.
It is connected for convenience, collar nut 4 is set in the end of nook closing member 1, collar nut 4 is located at the connection of nook closing member 1
End.
Additionally, the utility model also provides a kind of precision trace sampling apparatus, including above-mentioned introduction sampling probe, it is accurate micro-
The other parts for measuring sampling device refer to prior art, and the utility model will not be repeated here.The precision trace sampling apparatus
It is capable of achieving identical technique effect.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice, can in other embodiments realize in the case where spirit or scope of the present utility model are not departed from.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of sampling probe, it is characterised in that including：
The nook closing member (1) of rectangular bending, the sampling end of the nook closing member (1) sets caliber tapered configuration；
Be set in the nook closing member (1) outside, can with the nook closing member (1) constitute electric capacity outer tube (3)；
It is arranged at the insulating sleeve (6) between the nook closing member (1) and the outer tube (3).
2. sampling probe according to claim 1, it is characterised in that the tapered configuration of the sampling end of the nook closing member (1) includes
The closing in (101) of taper and needle point (102), the end of the needle point (102) set groove (103).
3. sampling probe according to claim 2, it is characterised in that the two ends of the outer tube (3) set annular every
Ring (2), the spacer ring (2) can isolate the outer tube (3) with the nook closing member (1) centering.
4. the sampling probe according to any one of claims 1 to 3, it is characterised in that also including catch (5), the outer tube
(3) it is vertical with the plate face of the catch (5) to fix；Fixing hole (502) and location hole (503) are opened up on the catch (5), it is described
Outer tube (3) inserting is fixed in the fixing hole (502).
5. sampling probe according to claim 4, it is characterised in that the catch (5) includes orthogonal two plate faces；
Also include sensor mounting hole (501) on the catch (5)；The mounting hole (501) is hung down with the axial direction of the fixing hole (502)
Directly.
6. sampling probe according to claim 4, it is characterised in that the end of the nook closing member (1) sets collar nut (4).
7. sampling probe according to claim 4, it is characterised in that the catch (5) is with the outer tube (3) by welding
Fixed or glue sticking is fixed.
8. a kind of precision trace sampling apparatus, it is characterised in that including the sampling probe described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331087.1U CN206300963U (en) | 2016-12-06 | 2016-12-06 | A kind of precision trace sampling apparatus and sampling probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331087.1U CN206300963U (en) | 2016-12-06 | 2016-12-06 | A kind of precision trace sampling apparatus and sampling probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300963U true CN206300963U (en) | 2017-07-04 |
Family
ID=59211894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621331087.1U Active CN206300963U (en) | 2016-12-06 | 2016-12-06 | A kind of precision trace sampling apparatus and sampling probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206300963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290561A (en) * | 2017-07-19 | 2017-10-24 | 上海惠中医疗科技有限公司 | Sampling probe and the immune instrument of Full-automatic chemiluminescence including the sampling probe |
| CN109443855A (en) * | 2018-12-27 | 2019-03-08 | 天津博硕科技有限公司 | One kind is anti-to bottom out sampling apparatus |
-
2016
- 2016-12-06 CN CN201621331087.1U patent/CN206300963U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290561A (en) * | 2017-07-19 | 2017-10-24 | 上海惠中医疗科技有限公司 | Sampling probe and the immune instrument of Full-automatic chemiluminescence including the sampling probe |
| CN107290561B (en) * | 2017-07-19 | 2019-07-09 | 上海惠中医疗科技有限公司 | Instrument is immunized in sampling probe and Full-automatic chemiluminescence including the sampling probe |
| CN109443855A (en) * | 2018-12-27 | 2019-03-08 | 天津博硕科技有限公司 | One kind is anti-to bottom out sampling apparatus |
| CN109443855B (en) * | 2018-12-27 | 2023-12-01 | 天津博硕科技有限公司 | Bottom-touching-preventing sampling device |
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