CN109365015A - Tear drop injection needle - Google Patents
Tear drop injection needle Download PDFInfo
- Publication number
- CN109365015A CN109365015A CN201811452432.0A CN201811452432A CN109365015A CN 109365015 A CN109365015 A CN 109365015A CN 201811452432 A CN201811452432 A CN 201811452432A CN 109365015 A CN109365015 A CN 109365015A
- Authority
- CN
- China
- Prior art keywords
- annular
- syringe
- tear drop
- needle core
- needle
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000004448 titration Methods 0.000 abstract description 7
- 239000000975 dye Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0478—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure pistons
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention discloses a kind of tear drop injection needle, and including syringe and the needle core being placed in the syringe, the needle core includes: first annular protrusion, is set to the needle core lower part；First annular recessed portion is set on the first annular protrusion, and the first elastic seal ring is equipped in the first annular recessed portion；Second annular recess is set on the first annular protrusion, which is located above the first annular recessed portion, and hard guide collar is equipped in second annular recess.Since hard guide collar basically will not produce deformation, by the way that hard guide collar is arranged, the needle core left and right offset in certain amplitude relative to syringe axis in the process of moving up and down can be limited, in the offset amplitude, sealing ring will not generate moderate finite deformation with needle core in the process of moving up and down, it avoids tear drop injection needle to reveal in the titration of liquid or draw during, improves dropping liquid precision.
Description
Technical field
The invention belongs to the dropping liquid machine fields in dyeing apparatus, and in particular to the tear drop injection used on a kind of dropping liquid machine
Needle.
Background technique
Currently, being the capital equipment of configuration dyestuff in laboratory in field of printing and dyeing automatically, plural number is equipped on dropping liquid machine board
The mother liquid multi-cavity bottle being arranged, mother liquid multi-cavity bottle are vial, in mother liquor by needle tubing or syringe, and the mechanical device with
It is transplanted on board board another end to match in the dyeing cup of liquid zone and weighed, ingredient is then carried out according to design requirement.
Liquid-auto-dropping machine is all to pass through needle core by the needle core of pneumatically or electrically clamping device automatic clamping tear drop syringe
Dyestuff is drawn or is oozed in up and down motion in syringe.In order to avoid syringe occurs in the titration of liquid or draw during
Micro- leakage, it will usually which sealing ring is set on needle core, to realize the sealing between needle core and syringe.
Present inventor during inventive technique scheme, has found above-mentioned technology at least in realizing the embodiment of the present application
It has the following technical problems:
Due to the effect of the pneumatically or electrically chucking power of clamping device, needle core in the process of moving up and down, inevitably
It can be deviated relative to syringe axis or so, in the case where there is no limit for needle core or so offset amplitude, needle core is in migration process
Sealing ring when offset amplitude is excessive on meeting severe crush needle core, causes sealing ring to generate moderate finite deformation, which causes to infuse
Emitter sealing effect is deteriorated, and syringe is revealed in the titration of liquid or draw during, to influence dropping liquid precision.
Summary of the invention
In order to solve the sealing ring on severe crush needle core when needle core offset amplitude in migration process is excessive, cause close
Seal leads to the problem of larger deformation, and the embodiment of the present application provides tear drop injection needle, and the technical solution is as follows:
To achieve the goals above, the invention provides the following technical scheme:
Tear drop injection needle, including syringe and the needle core being placed in the syringe, the needle core includes:
First annular protrusion is set to the needle core lower part；
First annular recessed portion is set on the first annular protrusion, and the first bullet is equipped in the first annular recessed portion
Property sealing ring；Second annular recess is set on the first annular protrusion, which is located at described first
Above annular recess, and it is equipped with hard guide collar in second annular recess, the syringe interior diameter is defined as X, institute
It states hard guide collar overall diameter and is defined as Y, the overall diameter of the first annular protrusion is defined as W, wherein X-0.12mm ﹤ Y ﹤
X-0.02mm, W ﹤ Y.It is clamped at the top of needle core by fixture, offset can be controlled during up and down motion, squeeze the sealing on needle core
Circle causes sealing ring to generate moderate finite deformation, in the present embodiment, since hard guide collar basically will not produce deformation, passes through setting
Hard guide collar can limit the needle core left and right offset in certain amplitude relative to syringe axis in the process of moving up and down, at this
In offset amplitude, sealing ring will not generate moderate finite deformation with needle core in the process of moving up and down, avoid tear drop injection needle
It is revealed in the titration of liquid or draw during, improves dropping liquid precision.
Further, Y=X-0.05mm.
Further, the hard sealing ring outer wall is equipped with lubricant coating.
Further, minimum exterior diameter of first elastic seal ring in deformation process is defined as Z1min, maximum outer straight
Diameter is defined as Z1max, wherein Z1min > X, Z1max ﹤ X+0.25mm.
Further, the needle core lower part is additionally provided with third annular recess, which is located at described second
Above annular recess, and the second elastic seal ring is equipped in the third annular recess.
Further, minimum exterior diameter of second elastic seal ring in deformation process is Z2min, and largest outer diameter is
Z2max, wherein Z2min > X, Z2max ﹤ X+0.25mm.
Further, the needle core top is equipped with the second annular protrusion, the overall diameter of the annular protrusion and the syringe
Interior diameter be adapted.
Further, the syringe lower part is equipped with third annular protrusion.
Further, shock absorbing ring is equipped with below the third annular protrusion.
The beneficial effect of the application is:
Since hard guide collar basically will not produce deformation, by the way that hard guide collar is arranged, needle core can be limited and moved down upper
The left and right offset in certain amplitude relative to syringe axis during dynamic, in the offset amplitude, sealing ring exists with needle core
Moderate finite deformation will not be generated during moving up and down, and avoided tear drop injection needle and let out in the titration of liquid or draw during
Dew, improves dropping liquid precision.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings
Fig. 1 is overall perspective view of the invention；
Fig. 2 is the exploded perspective figure of tear drop injection needle provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of the needle core part of the tear drop injection needle of Fig. 2.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
As shown in Figs. 1-2, tear drop injection needle of the present invention, including syringe 4 and the needle core being placed in the syringe 1,
1 top of needle core is equipped with aid portion 15, and pneumatically or electrically clamping device pushes needle core by clamping the clamping part 15 upward or downward
1, to draw or ooze dyestuff.
As shown in Figure 1-3,1 lower part of needle core is equipped with first annular protrusion 16, which is equipped with first
Annular recess 11, the first annular recessed portion 11 are interior equipped with the first elastic seal ring 21；On first annular recessed portion 11,
First annular protrusion 15 is equipped with the second annular recess 12, hard guide collar 3 is equipped in second annular recess, by needle
4 interior diameters of cylinder are defined as X, and outer 3 diameters of hard guide collar are defined as Y, wherein X-0.12mm ﹤ Y ﹤ X-0.02mm.At the top of needle core by
Fixture clamping, can control offset during up and down motion, squeeze the sealing ring on needle core, and sealing ring is caused to generate larger change
Shape in the present embodiment, since hard guide collar basically will not produce deformation, by the way that hard guide collar is arranged, can limit needle core and exist
During moving up and down relative to syringe axis in certain amplitude left and right offset, in the offset amplitude, sealing ring with
Needle core will not generate moderate finite deformation in the process of moving up and down, avoid tear drop injection needle in the titration of liquid or during draw
It reveals, improves dropping liquid precision.In addition, the overall diameter Y of hard guide collar 3 is such as too big, then it will affect the movement of needle core 1,
It is too small, it does not have and limits the effect that needle core is deviated in certain amplitude or so, therefore, it is necessary to limit X-0.12mm ﹤ Y ﹤ X-
0.02mm.Preferably, Y=X-0.05mm.The overall diameter of first annular protrusion 16 is defined as W, wherein W ﹤ Y.
Since the overall diameter of the first elastic seal ring 11 can change in needle core moving process, variation degree is directly affected
To whether will lead to leakage.If its minimum outer diameter is such as too small, then it is easy to cause during the motion as the fitting of syringe inner wall is not tight
It is close, cause to leak, therefore, the present embodiment selects its minimum exterior diameter to be consistently greater than 4 interior diameter of syringe, it can be ensured that it is being moved through
Cheng Zhong, the first elastic packing ring outer wall are bonded with syringe inner wall always, not will cause leakage.Therefore, it is close to define hard by the present invention
The overall diameter of seal 3 is X, and minimum exterior diameter of first elastic seal ring in deformation process is Z1min, wherein Z1min
> X.
If needle core can be hindered to move up and down in addition, if the largest outer diameter of the first elastic seal ring is too big, therefore,
It is Z1max that the present invention, which defines largest outer diameter of first elastic seal ring in deformation process, wherein Z1max ﹤ X+0.25mm.
Hard sealing ring 3 hinders needle core to move up and down in order to prevent, and 3 outer wall of hard sealing ring is equipped with lubricant coating.
As shown in Figure 1-3, in order to further prevent needle core to deviate in the process of moving up and down relative to syringe axis or so,
Elastic seal ring of the invention, which uses, to be symmetrical arranged, i.e., on the second annular recess 12, on first annular protrusion 15
It is additionally provided with third annular recess 13, the second elastic seal ring 22 is equipped in the third annular recess 13.
Similarly, defining minimum exterior diameter of second elastic seal ring 22 in deformation process is Z2min, wherein Z2min
> X.Defining largest outer diameter of second elastic seal ring in deformation process is Z2max, wherein Y2max ﹤ X+0.25mm.
As shown in Figs. 1-2,1 top of needle core is equipped with the second annular protrusion 14, the overall diameter of second annular protrusion 14
It is adapted with the interior diameter of the syringe.The effect of second annular protrusion 14 is, when needle core 1 is completely disposed at syringe 4
(i.e. the state of Fig. 1) prevents needle core from deviating relative to syringe axis or so.
Such as Fig. 2, the syringe lower part is equipped with third annular protrusion 41.The third annular protrusion 41 can be placed in injection
On bottleneck below needle.
Such as Fig. 1-2, shock absorbing ring 5 is equipped with below third annular protrusion 41.The shock absorbing ring 5 can prevent under injection needle and its
Vibration between vial.
In use, pneumatically or electrically clamping device pushes needle core 1, from injection by clamping clamping part 15 upward or downward
Dyestuff is drawn or oozed in vial under needle.Since hard guide collar basically will not produce deformation, led by the way that hard is arranged
To circle, the needle core left and right offset in certain amplitude relative to syringe axis in the process of moving up and down can be limited, in the offset width
In degree, sealing ring will not generate moderate finite deformation with needle core in the process of moving up and down, avoid tear drop injection needle in liquid
Titration or reveal during drawing, improve dropping liquid precision.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..The foregoing is merely the present invention
Preferred embodiment, be not intended to limit the invention, all within the spirits and principles of the present invention, it is made it is any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. tear drop injection needle, including syringe and the needle core being placed in the syringe, it is characterised in that the needle core includes:
First annular protrusion is set to the needle core lower part；
First annular recessed portion is set on the first annular protrusion, and it is close that the first elasticity is equipped in the first annular recessed portion
Seal；
Second annular recess is set on the first annular protrusion, which is located at described first annular
Above recessed portion, and hard guide collar is equipped in second annular recess,
The syringe interior diameter is defined as X, the hard guide collar overall diameter is defined as Y, the first annular protrusion
Overall diameter is defined as W, wherein X-0.12mm ﹤ Y ﹤ X-0.02mm, W ﹤ Y.
2. tear drop injection needle as described in claim 1, which is characterized in that Y=X-0.05mm.
3. tear drop injection needle as described in claim 1, which is characterized in that the hard sealing ring outer wall is equipped with lubricant coating.
4. tear drop injection needle as described in claim 1, which is characterized in that the syringe overall diameter is X, and first elasticity is close
Minimum exterior diameter of the seal in deformation process is defined as Z1min, and largest outer diameter is defined as Z1max, wherein Z1min > X,
Z1max ﹤ X+0.25mm.
5. tear drop injection needle as described in claim 1, which is characterized in that the needle core lower part is additionally provided with third ring-shaped depression
Portion, the third annular recess are located above second annular recess, and the second bullet is equipped in the third annular recess
Property sealing ring.
6. tear drop injection needle as claimed in claim 5, which is characterized in that second elastic seal ring is in deformation process
Minimum exterior diameter is Z2min, largest outer diameter Z2max, wherein Z2min > X, Z2max ﹤ X+0.25mm.
7. tear drop injection needle as described in claim 1, which is characterized in that the needle core top is equipped with the second annular protrusion,
The interior diameter of the overall diameter of second annular protrusion and the syringe is adapted.
8. tear drop injection needle as described in claim 1, which is characterized in that the syringe lower part is equipped with third annular protrusion.
9. tear drop injection needle as claimed in claim 9, which is characterized in that be equipped with damping below the third annular protrusion
Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452432.0A CN109365015A (en) | 2018-11-30 | 2018-11-30 | Tear drop injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452432.0A CN109365015A (en) | 2018-11-30 | 2018-11-30 | Tear drop injection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109365015A true CN109365015A (en) | 2019-02-22 |
Family
ID=65376285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811452432.0A Pending CN109365015A (en) | 2018-11-30 | 2018-11-30 | Tear drop injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109365015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774113A (en) * | 2020-06-30 | 2020-10-16 | 马良 | Anti-interference moving and fixing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8202495B1 (en) * | 2008-06-23 | 2012-06-19 | Smith James C | Ergonomic pipette tip |
| CN202315928U (en) * | 2011-11-10 | 2012-07-11 | 美德创新（北京）科技有限公司 | Mounting shaft for suction head of pipettor |
| CN203829421U (en) * | 2013-10-08 | 2014-09-17 | 浙江省海洋开发研究院 | Anti-slip glass syringe |
| CN105065677A (en) * | 2015-08-10 | 2015-11-18 | 华侨大学 | Sealing ring special for piston of injector of pipe-free liquid dropping machine |
| CN106676799A (en) * | 2017-01-18 | 2017-05-17 | 华侨大学 | Injector of pipeline-free automatic liquid dropping machine |
| CN206404806U (en) * | 2017-01-06 | 2017-08-15 | 成都归合科技有限公司 | The accurate metering device for measuring experimental article |
| CN210138684U (en) * | 2018-11-30 | 2020-03-13 | 广州市鸿通机械有限公司 | Drip injection needle |
-
2018
- 2018-11-30 CN CN201811452432.0A patent/CN109365015A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8202495B1 (en) * | 2008-06-23 | 2012-06-19 | Smith James C | Ergonomic pipette tip |
| CN202315928U (en) * | 2011-11-10 | 2012-07-11 | 美德创新（北京）科技有限公司 | Mounting shaft for suction head of pipettor |
| CN203829421U (en) * | 2013-10-08 | 2014-09-17 | 浙江省海洋开发研究院 | Anti-slip glass syringe |
| CN105065677A (en) * | 2015-08-10 | 2015-11-18 | 华侨大学 | Sealing ring special for piston of injector of pipe-free liquid dropping machine |
| CN206404806U (en) * | 2017-01-06 | 2017-08-15 | 成都归合科技有限公司 | The accurate metering device for measuring experimental article |
| CN106676799A (en) * | 2017-01-18 | 2017-05-17 | 华侨大学 | Injector of pipeline-free automatic liquid dropping machine |
| CN210138684U (en) * | 2018-11-30 | 2020-03-13 | 广州市鸿通机械有限公司 | Drip injection needle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774113A (en) * | 2020-06-30 | 2020-10-16 | 马良 | Anti-interference moving and fixing device |
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