CN216144745U - Chromatograph is with having autosampler sampling needle of stifled side opening - Google Patents
Chromatograph is with having autosampler sampling needle of stifled side opening Download PDFInfo
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- CN216144745U CN216144745U CN202120409709.2U CN202120409709U CN216144745U CN 216144745 U CN216144745 U CN 216144745U CN 202120409709 U CN202120409709 U CN 202120409709U CN 216144745 U CN216144745 U CN 216144745U
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- needle
- spring
- needle head
- steel ball
- groove
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- 238000005070 sampling Methods 0.000 title claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000005192 partition Methods 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides an automatic sampler sampling needle with an anti-blocking side hole for a chromatograph, which comprises a needle head, a needle cylinder and a protective cylinder, wherein the needle head is arranged below the needle cylinder, and the protective cylinder is sleeved outside the needle head and is in sliding connection with the needle head.
Description
Technical Field
The utility model relates to the technical field of chromatographs, in particular to an automatic sampler sampling needle with an anti-blocking side hole for a chromatograph.
Background
A chromatograph is an apparatus for performing chromatographic separation analysis. Comprises a sample introduction system, a detection system, a recording and data processing system, a temperature control system, a mobile phase control system and the like. Modern chromatographs have the characteristics of high stability, sensitivity, versatility, high degree of automation and the like. There are gas chromatography, liquid chromatography, gel chromatography, and the like. These chromatographs are widely used for analyzing a certain content of a chemical product or a polymer material, and gel chromatography can also measure the molecular weight and distribution of the polymer material.
The utility model provides a sample needle of auto-sampler leads to production ratio is thinner and longer in the chromatograph, insert the sample needle and carry out the absorption of sample in the sample bottle at the during operation, the syringe needle of traditional auto-sampler is pushing down and pricks the in-process of reagent bottle, because reagent bottle itself does not support and appears rocking and slope easily, the syringe needle bending condition or even cracked condition appears easily on pushing down the reagent bottle of slope in the syringe needle, influence the experiment process, the change syringe needle of while regularity can cause economic loss, and sample bottle upper cover department is provided with the rubber pad, there is the effect that prevents sample volatilization and pollution, fill in the syringe needle with the rubber on the introduction cushion very easily when the sample, cause the syringe needle to block up, thereby prevent the sample entering port, lead to experimental failure.
Disclosure of Invention
According to the technical problem, the utility model provides an automatic sampler sampling needle with an anti-blocking side hole for a chromatograph, which is characterized by comprising a needle head, a needle cylinder and a protection cylinder, wherein a thread groove is formed above the needle cylinder, the needle cylinder is connected with an external automatic sampler through the thread groove, the needle head is arranged below the needle cylinder, and the protection cylinder is sleeved outside the needle head and is in sliding connection with the needle head;
the needle comprises a protective cylinder, a needle head, a spring groove, a spring, a baffle plate and a spring groove, wherein the protective cylinder is internally provided with the spring groove, the upper part of the needle head is provided with a convex block which is arranged in the spring groove, the needle head is connected into the spring groove in a sliding way through the convex block, the convex block and the needle head are of an integral structure, the spring is arranged in the spring groove, one end of the spring is connected with the bottom surface of the inner wall of the spring groove, the other end of the spring is connected with the convex block, the spring is sleeved outside the needle head, the bottom end of the needle head is of an inclined plane structure, a needle hole is arranged on the inclined plane, the lower part of the left side of the needle head is provided with an anti-blocking side hole, the needle head is internally provided with the baffle plate which is fixedly connected with the inner wall of the needle head, the baffle plate divides the inner cavity at the lower part of the needle head into a needle hole cavity and a side hole cavity, the needle hole is communicated with the needle hole cavity, the anti-blocking side hole is communicated with the side hole cavity, a filter screen is arranged in the needle head, a filter screen is arranged below the baffle plate, the steel ball groove has been seted up to side opening chamber top, the steel ball groove is the trapezium structure, steel ball tank bottom diameter is less than the top diameter, the steel ball inslot is provided with the steel ball, steel ball tank top is provided with the screen panel.
The utility model has the beneficial effects that:
the utility model is provided with a needle head, a needle cylinder and a protective cylinder, when in use, the needle head is connected with an external automatic sample injector through a thread groove arranged on the needle cylinder to complete installation, when the automatic sample injector starts to work, the automatic sample injector puts a sample bottle filled with a sample to be tested below a sampling needle, the automatic sample injector controls the sampling needle to move downwards, the lower end of the protective cylinder gradually approaches and contacts with an upper cover of the sample bottle, the protective cylinder is fully contacted with the sample bottle and presses downwards to keep the stability between the sampling needle and the sample bottle, the automatic sample injector continuously controls the sampling needle to press downwards, the needle head in the protective cylinder starts to move downwards relative to the protective cylinder, a lug gradually extrudes a spring to deform the spring to store kinetic energy, at the moment, the bottom end of the needle head leaves the protective cylinder and gradually downwards and pierces a rubber pad of the upper cover of the sample bottle and gradually penetrates into the sample, and the sampling needle starts to absorb the sample, the steel ball moves in the steel ball groove and is blocked by the mesh enclosure, and a sample can be sucked into the inner cavity of the needle head through the needle hole and the anti-blocking side hole and moves upwards until being successfully collected; when the sampling needle pierces the rubber pad of the upper cover of the sample bottle, if the dropped rubber blocks the needle hole, the anti-blocking side hole can continue to play a role in absorbing liquid, and the normal operation of the experiment is kept; after the reagent is collected, the automatic sample injector lifts the sampling needle, the needle head starts to move upwards relative to the protection barrel, the spring releases kinetic energy, and when the bottom end of the needle head enters the protection barrel, the lug is in contact with the top end of the inner wall of the spring groove and drives the protection barrel to move upwards, so that the sampling needle leaves the reagent bottle, and the work is completed; when the work is finished, if the needle hole is blocked, the sampling needle can be detached through threads, the sampling needle is connected with an external small air pump, the sampling needle is inflated, when the sampling needle is inflated, steel balls in the steel ball groove are pressed at the lower end of the steel ball groove by air pressure, so that the side hole cavity is closed, air gradually moves towards the needle hole and raises the pressure, and finally a rubber pad blocked in the needle hole is blown open, so that the cleaning work is finished. When the needle head is pricked into the reagent bottle, the rubber pad makes the needle hole block, because the anti-blocking side hole is not direct to contact with the rubber pad, the sample can get into the instrument through the anti-blocking side hole, and the design of needle head makes can be washed away the pinhole that blocks up through the recoil, makes the use number of times and the time of sample needle increase by a wide margin, reduces economic loss.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of a front view of the protective sleeve of the present invention;
fig. 3 is a cross-sectional view of a front view of the needle of the present invention.
As shown in the figure: 1-syringe, 2-protective cylinder, 3-thread groove, 4-needle, 5-lug, 6-spring, 7-spring groove, 8-needle hole, 9-anti-blocking side hole, 10-clapboard, 11-needle hole cavity, 12-side hole cavity, 13-filter screen, 14-steel ball, 15-steel ball groove.
Detailed Description
Example 1
The utility model provides a sampling needle of an automatic sampler with an anti-blocking side hole for a chromatograph, which is characterized by comprising a needle head 4, a needle cylinder 1 and a protective cylinder 2, wherein a thread groove 3 is formed above the needle cylinder 1, the needle cylinder 1 is connected with an external automatic sampler through the thread groove 3, the needle head 4 is arranged below the needle cylinder 1, and the protective cylinder 2 is sleeved outside the needle head 4 and is in sliding connection with the needle head 4;
the protection barrel 2 is internally provided with a spring groove 7, the upper part of the needle head 4 is provided with a lug 5, the lug 5 is arranged in the spring groove 7, the needle head 4 is connected in the spring groove 7 in a sliding way through the lug 5, the lug 5 and the needle head 4 are of an integral structure, the spring 6 is arranged in the spring groove 7, one end of the spring 6 is connected with the bottom surface of the inner wall of the spring groove 7, the other end of the spring 6 is connected with the lug 5, the spring 6 is sleeved outside the needle head 4, the bottom end of the needle head 4 is of an inclined plane structure, a needle hole 8 is arranged on the inclined plane, the lower part of the left side of the needle head 4 is provided with an anti-blocking side hole 9, the needle head 4 is internally provided with a baffle plate 10, the baffle plate 10 is fixedly connected with the inner wall of the needle head 4, the baffle plate 10 divides the inner cavity at the lower part of the needle head into a needle hole cavity 11 and a side hole cavity 12, the needle hole 8 is communicated with the needle hole cavity 11, the anti-blocking side hole 9 is communicated with the side hole cavity 12, the filter screen 13 is arranged in the needle head 4, and the filter screen 13 is arranged below the baffle plate 10, a steel ball groove 15 is formed above the side hole cavity 12, the steel ball groove 15 is of a trapezoidal structure, the diameter of the bottom end of the steel ball groove 15 is smaller than that of the top end of the steel ball groove, a steel ball 14 is arranged in the steel ball groove 15, and a mesh enclosure is arranged at the top end of the steel ball groove 15.
Example 2
When the automatic sampler is used, the automatic sampler is connected with an external automatic sampler through a thread groove 3 arranged on a needle cylinder 1 to finish installation, when the automatic sampler starts to work, the automatic sampler puts a sample bottle filled with a sample to be detected below a sampling needle, the automatic sampler controls the sampling needle to move downwards, the lower end of a protective cylinder 2 gradually approaches and contacts with an upper cover of the sample bottle, the protective cylinder 2 is fully contacted with the sample bottle and presses downwards to keep the stability between the sampling needle and the sample bottle, the automatic sampler continues to control the sampling needle to press downwards, a needle head 4 in the protective cylinder 2 starts to move downwards relative to the protective cylinder 2, a lug 5 gradually extrudes a spring 6 to deform the spring 6 to store kinetic energy, the bottom end of the needle head 4 is separated from the protective cylinder 2 and gradually downwards pierces a rubber pad of the upper cover of the sample bottle and gradually penetrates into the sample, the sampling needle starts to absorb the sample, a steel ball 14 moves in a steel ball groove 15 and is blocked by a mesh cover, the sample can be sucked into the inner cavity of the needle 4 through the pinhole 8 and the anti-blocking side hole 9 and moves upwards until the sample is successfully collected; when the sample is sucked, the filter screens 13 and 14 filter colloidal particles which may enter the sample, so that the accuracy of the experiment is maintained; when the sampling needle pierces the rubber pad of the upper cover of the sample bottle, if the dropped rubber blocks the needle hole 8, the anti-blocking side hole 9 can continue to absorb liquid, and the experiment can be normally carried out; after the reagent is collected, the automatic sample injector lifts the sampling needle, the needle head 4 starts to move upwards relative to the protective barrel 2, the spring releases kinetic energy, and when the bottom end of the needle head 4 enters the protective barrel 2, the lug 5 is in contact with the top end of the inner wall of the spring groove 7 and drives the protective barrel 2 to move upwards, so that the sampling needle leaves the reagent bottle, and the work is finished; when the work is finished, if the pinhole 8 is blocked, the sampling needle can be detached through threads and connected with an external small air pump to inflate the sampling needle, and during inflation, the steel balls 14 in the steel ball grooves 15 are pressed at the lower ends of the steel ball grooves 15 by air pressure, so that the side hole cavities 12 are closed, air gradually moves towards the pinhole 8 and raises the pressure, and finally the blocked rubber pads in the pinhole 8 are blown open, thereby finishing the cleaning work.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the utility model has been described with respect to the above embodiments, it will be understood by those skilled in the art that the utility model is not limited to the above embodiments, which are described in the specification and illustrated only to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. A chromatograph is with the automatic sampler sampling needle that has anti-blocking side opening, characterized by including syringe needle, cylinder, protective cylinder, offer the thread groove above the said cylinder, the said cylinder is connected with external automatic sampler through the thread groove, the said syringe needle is set up below the cylinder, the said protective cylinder is fitted over the syringe needle and connected with syringe needle slip;
the needle comprises a protective cylinder, a needle head, a spring groove, a convex block, a spring, a partition board, a steel ball groove, a spring, a needle head, a spring sleeve, a needle head, a needle hole cavity, a needle head inner wall, a needle hole cavity, a needle head inner wall, a needle hole cavity and a needle hole cavity, wherein the protective cylinder is internally provided with the spring groove, the upper part of the needle head is provided with the convex block, the convex block is arranged in the spring groove, the needle head is slidably connected with the spring groove through the convex block, one end of the spring is connected with the bottom surface of the spring groove, the other end of the spring is connected with the convex block, the spring is sleeved outside the needle head, the bottom end of the needle head is of an inclined plane structure, the needle hole is arranged on the inclined plane, the left lower part of the needle head is provided with an anti-blocking side hole cavity and a side hole cavity, the needle hole cavity is divided into the needle hole cavity and the side hole cavity by the side hole cavity, the needle hole cavity is communicated with the anti-blocking hole, the steel ball groove is arranged in the needle head, the steel ball groove is internally provided with a steel ball, and the top end of the steel ball groove is provided with a mesh enclosure.
2. The autosampler sampling needle with anti-side hole for chromatograph according to claim 1, wherein said protrusion is integrated with the needle head.
3. The autosampler sampling needle with anti-clogging side holes for chromatograph according to claim 1, wherein said steel ball groove is trapezoidal in structure, and the diameter of the bottom end of said steel ball groove is smaller than the diameter of the top end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120409709.2U CN216144745U (en) | 2021-02-24 | 2021-02-24 | Chromatograph is with having autosampler sampling needle of stifled side opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120409709.2U CN216144745U (en) | 2021-02-24 | 2021-02-24 | Chromatograph is with having autosampler sampling needle of stifled side opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216144745U true CN216144745U (en) | 2022-03-29 |
Family
ID=80798029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120409709.2U Expired - Fee Related CN216144745U (en) | 2021-02-24 | 2021-02-24 | Chromatograph is with having autosampler sampling needle of stifled side opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216144745U (en) |
-
2021
- 2021-02-24 CN CN202120409709.2U patent/CN216144745U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20220329 |