CN208390048U - A kind of pipette tips structure that anti-suction pipe falls off - Google Patents
A kind of pipette tips structure that anti-suction pipe falls off Download PDFInfo
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- CN208390048U CN208390048U CN201820686260.2U CN201820686260U CN208390048U CN 208390048 U CN208390048 U CN 208390048U CN 201820686260 U CN201820686260 U CN 201820686260U CN 208390048 U CN208390048 U CN 208390048U
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- suction pipe
- snap ring
- suction nozzle
- suction
- pipette tips
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Abstract
The utility model belongs to biological liquid shifting equipment field, more particularly to a kind of pipette tips structure that anti-suction pipe falls off.Including suction nozzle, the suction nozzle is used to protrude into the lower end that suction pipe is connect with suction pipe and is equipped with snap ring, and the snap ring is distributed along the circumferencial direction of the suction nozzle, and the point towards suction pipe inner wall is convexly equipped on the outside of the snap ring.The beneficial effects of the utility model are: by the way that the snap ring with point is arranged on suction nozzle, suction nozzle is enabled to be pierced into suction pipe inner wall, so that suction nozzle is fitted closely with suction pipe inner wall, improve sealing performance, it ensure that clamping sealing effect, and it is more laborsaving when making suction nozzle exit suction pipe by point, avoid suction nozzle and suction pipe stuck.
Description
Technical field
The utility model belongs to biological liquid shifting equipment field, more particularly to a kind of pipette tips structure that anti-suction pipe falls off.
Background technique
In Bioexperiment, laboratory sample is manipulated in various experimental implementations commonly using liquid-transfering gun.Especially automate
Based on liquor removing workstation is worked with liquid relief, if the pipette tips of liquid-transfering gun loosen, leakage or fall off, liquid relief quality cannot be protected
Card, then will affect the process of experiment and as a result, serious may destroy entire test.So reliable leakproofness is to guarantee
One of the key of accurate liquid relief.
Existing liquid-transfering gun mainly includes fuselage and suction nozzle, is equipped with the piston connecting with suction nozzle outside fuselage, in fuselage
Equipped with driving mechanism, the piston connecting with driving mechanism, driving mechanism band piston front and back in suction nozzle are equipped in piston
Movement is so that suction nozzle draws liquid or discharge liquid.In order to avoid the liquid mixing in different tests, the suction nozzle of liquid-transfering gun pipette tips
Position is socketed with suction pipe, and suction nozzle is socketed in inside the nozzle of suction pipe, imbibition or drain is directly carried out by suction pipe, after completing test
Suction nozzle exits suction pipe, the suction pipe more renewed.To realize accurate liquid relief, need to guarantee better seal effect, generally by increasing
Engaging dynamics between strong liquid-transfering gun pipette tips suction nozzle position and suction pipe makes the suction nozzle of pipette tips combine closely with suction pipe.But this mode
Will cause overexertion makes pipette tips with after suction pipe fit on, and suction pipe deformation influences imbibition precision.And it is needed in liquid relief often
Replace suction pipe, the suction pipe after clamping is easy stuck when exiting pipette tips, or needs bigger dynamics that can just exit, replacement is inhaled
Manage it is inconvenient for operation, especially in the experiment scene of automation, replacement suction pipe it is more inconvenient.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of rifles that anti-suction pipe falls off
Header structure influences test mass etc. and asks for solving suction nozzle in the prior art and suction pipe connection sealing is poor, imbibition low precision
Topic.
In order to achieve the above objects and other related objects, the utility model provides a kind of pipette tips structure that anti-suction pipe falls off,
Including suction nozzle, the suction nozzle is used to protrude into the lower end that suction pipe is connect with suction pipe and is equipped with snap ring, and the snap ring is along the suction nozzle
Circumferencial direction distribution, and the point towards suction pipe inner wall is convexly equipped on the outside of the snap ring.
The beneficial effects of the utility model are: enabling suction nozzle by the way that the snap ring with point is arranged on suction nozzle
It is pierced into suction pipe inner wall, so that suction nozzle is fitted closely with suction pipe inner wall, sealing performance is improved, ensure that clamping sealing effect, and
It is more laborsaving when making suction nozzle exit suction pipe by point, avoid suction nozzle and suction pipe stuck.
Further, the snap ring is fabricated by hard material.
Further, the snap ring is made of stainless steel.
Further, the angle of the point of the snap ring is acute angle.
Further, the longitudinal cross-section of the snap ring is equilateral triangle structure, and the point is one of apex angle, separately
Outer two apex angles are located on the side wall of the suction nozzle.
Further, the snap ring and the suction nozzle are integrally formed.
Beneficial effect using above-mentioned further scheme is: such as plastics that suction pipe uses have the soft of certain deformability
Material, the snap ring of hard material enable to point to be smoothly pierced into suction pipe inner wall, improve the effect of clamping sealing, and energy
It avoids stuck, some rough structures of suction pipe inner wall can be rejected by point, so that the cooperation of suction nozzle and suction pipe
Du Genggao, increases the collocation degree of suction nozzle, and the scope of application is wider.
Further, the lower end of the suction nozzle is from top to bottom successively arranged the first vertical portion that diameter successively decreases and second vertical
Portion, the snap ring is arranged on the second vertical portion, and snap ring and the first vertical portion are bonded with suction pipe inner wall.
Further, the upper end of first vertical portion is equipped with the first up big and down small tapered portion, first vertical portion
Lower end is connect with the upper end of the second vertical portion by the second up big and down small tapered portion transition.
Further, the diameter of first vertical portion is greater than the snap ring along the length of suction nozzle radially protruding.
Further, the lower end of second vertical portion is equipped with up big and down small third tapered portion.
Beneficial effect using above-mentioned further scheme is: forming dual-seal by the first vertical portion and snap ring and suction pipe
Structure improves clamping sealing performance, by the first tapered portion limit suction nozzle protrude into the length in suction pipe, avoid protruding into it is too long,
Guiding role is played by third tapered portion, so that suction nozzle more smoothly protrudes into suction pipe.
Detailed description of the invention
Fig. 1 is the structural representation for the pipette tips structure that the anti-suction pipe of the utility model embodiment falls off；
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is the suction nozzle for the pipette tips structure that the anti-suction pipe of the utility model embodiment falls off and the assembling schematic diagram of suction pipe；
Fig. 4 is the enlarged diagram of part B in Fig. 3.
Piece mark explanation
1 suction nozzle；
11 snap rings；
111 points；
12 first tapered portion；
13 first vertical portions；
14 second tapered portion；
15 second vertical portions；
16 third tapered portion；
2 suction pipes.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that the term of such as "upper", "lower", "left", "right", " centre " and " one " cited in this specification, also
Only being illustrated convenient for narration, rather than to limit the enforceable range of the utility model, relativeness is altered or modified,
Under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
As shown in Figures 1 to 4, the pipette tips structure that the anti-suction pipe of the utility model embodiment falls off, including suction nozzle 1, suction nozzle 1
Lower end protrude into suction pipe 2 and connect with suction pipe.Wherein, suction nozzle 1 is for protruding into the lower end in suction pipe 2 equipped with 11,11 snap ring of snap ring
It is distributed along the circumferencial direction of suction nozzle 1, and the outside of snap ring 11 is convexly equipped with the point 111 towards suction pipe inner wall, point 111
It is contacted with the inner wall of suction pipe 2, snap ring 11 and suction nozzle 1 can be manufactured simple and convenient using manufacture is integrally formed.Suction pipe 2 is
By such as plastics etc. there is the soft material of certain deformability to be fabricated, the inner wall of suction pipe 2 is up big and down small pyramidal structure,
Suction pipe 2 usually needs replacing during the test, avoids different tests suction pipe 2 from drawing different liquid and generates mixing interference.?
In the present embodiment, snap ring 11 is fabricated by hard materials such as such as stainless steels, and the angle α of the point 111 of snap ring is acute angle.
The longitudinal cross-section of snap ring 11 is equilateral triangle structure, and point 111 is one of apex angle, other two apex angle is located at suction nozzle
On 1 side wall, designed using the structure so that 11 symmetrical configuration of snap ring, enters suction pipe convenient for snap ring 11 or exit suction pipe, avoid
There is stuck phenomenon, and can be rejected at the injustice of 2 inner wall of suction pipe by snap ring, so that the cooperation between suction nozzle and suction pipe is more
Add good.
As shown in Figures 1 to 4, the lower end of suction nozzle 1 is from top to bottom successively arranged the first vertical portion 13 and that diameter successively decreases
Two vertical portions 15, snap ring 11 be arranged on the second vertical portion 15, and the point 111 of snap ring 11 and the first vertical portion 13 with suction
The inner wall of pipe 2 is bonded, and forms double sealing structure.The upper end of first vertical portion 13 is equipped with the first up big and down small tapered portion 12,
Suction nozzle 1, which is limited, by the first tapered portion 12 protrudes into the depth in suction pipe 2.The lower end of first vertical portion 13 and the second vertical portion 15
Upper end is connected by up big and down small 14 transition of the second tapered portion, gentle transition, guarantees structural strength, and pass through the first taper
Portion provides projection space for snap ring, and the diameter D1 of the first vertical portion 13 is greater than snap ring along the length D2 of suction nozzle radially protruding, uses
The structure designs so that the point of snap ring makes the surface of suction nozzle inner wall become smooth when entering suction nozzle, is conducive to suction pipe upper end
Inner wall is fitted closely with the first vertical portion 13, while point 111 is also pierced into suction pipe lower end inner wall, reaches the function of dual-seal
Can, the clamping sealing performance of suction nozzle and suction pipe is improved, liquid relief can be smoothly completed even if pipetting processes are slightly tilted,
And traditional pipettor must keep vertically, increasing the scope of application, pipetting is more accurate.In order to enable suction nozzle 1 is more
It smoothly protrudes into suction pipe 2, the lower end of the second vertical portion 15 is equipped with up big and down small third tapered portion 16, passes through third tapered portion
16 provide guiding role when protruding into suction pipe for suction nozzle, operate simpler convenience.
The utility model is designed by simple structure so that suction nozzle and the good sealing performance of suction pipe holding, effectively avoid
The problems such as suction nozzle is detached from without reason with suction pipe, prevents sample spilling, leakage, improves the accuracy of liquid relief experimental implementation.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (10)
1. a kind of pipette tips structure that anti-suction pipe falls off, it is characterised in that: including suction nozzle, the suction nozzle is for protruding into suction pipe and suction pipe
The lower end of connection is equipped with snap ring, and the snap ring is distributed along the circumferencial direction of the suction nozzle, and is convexly equipped on the outside of the snap ring
Towards the point of suction pipe inner wall.
2. the pipette tips structure that a kind of anti-suction pipe according to claim 1 falls off, it is characterised in that: the snap ring is by hard material
Material is fabricated.
3. the pipette tips structure that a kind of anti-suction pipe according to claim 2 falls off, it is characterised in that: the snap ring is by stainless steel
It is fabricated.
4. the pipette tips structure that a kind of anti-suction pipe according to claim 1 falls off, it is characterised in that: the point of the snap ring
Angle be acute angle.
5. the pipette tips structure that a kind of anti-suction pipe according to claim 1 falls off, it is characterised in that: the longitudinal direction of the snap ring is cut
Face is equilateral triangle structure, and the point is one of apex angle, other two apex angle is located on the side wall of the suction nozzle.
6. the pipette tips structure that a kind of anti-suction pipe according to any one of claims 1 to 5 falls off, it is characterised in that: the card
Ring and the suction nozzle are integrally formed.
7. the pipette tips structure that a kind of anti-suction pipe according to claim 6 falls off, it is characterised in that: the lower end of the suction nozzle by
The first vertical portion and the second vertical portion that diameter successively decreases are successively arranged under, the snap ring is arranged on the second vertical portion, and
Snap ring and the first vertical portion are bonded with suction pipe inner wall.
8. the pipette tips structure that a kind of anti-suction pipe according to claim 7 falls off, it is characterised in that: first vertical portion
Upper end is equipped with the first up big and down small tapered portion, the upper end of the lower end of first vertical portion and the second vertical portion by it is upper it is big under
Small the second tapered portion transition connection.
9. the pipette tips structure that a kind of anti-suction pipe according to claim 8 falls off, it is characterised in that: first vertical portion
Diameter is greater than the snap ring along the length of suction nozzle radially protruding.
10. the pipette tips structure that a kind of anti-suction pipe according to claim 7 falls off, it is characterised in that: second vertical portion
Lower end be equipped with up big and down small third tapered portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686260.2U CN208390048U (en) | 2018-05-09 | 2018-05-09 | A kind of pipette tips structure that anti-suction pipe falls off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686260.2U CN208390048U (en) | 2018-05-09 | 2018-05-09 | A kind of pipette tips structure that anti-suction pipe falls off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208390048U true CN208390048U (en) | 2019-01-18 |
Family
ID=65062251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820686260.2U Active CN208390048U (en) | 2018-05-09 | 2018-05-09 | A kind of pipette tips structure that anti-suction pipe falls off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208390048U (en) |
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2018
- 2018-05-09 CN CN201820686260.2U patent/CN208390048U/en active Active
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