CN104028320B - The anti-withdrawing pipette tip of a kind of anticreep - Google Patents
The anti-withdrawing pipette tip of a kind of anticreep Download PDFInfo
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- CN104028320B CN104028320B CN201410108208.5A CN201410108208A CN104028320B CN 104028320 B CN104028320 B CN 104028320B CN 201410108208 A CN201410108208 A CN 201410108208A CN 104028320 B CN104028320 B CN 104028320B
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- sealing ring
- elastic sealing
- liquid
- gun head
- liquid transfer
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Abstract
The invention discloses the anti-withdrawing pipette tip of a kind of anticreep, comprise liquid transfer gun head body, the upper inner face of liquid transfer gun head body is provided with step, step is provided with elastic sealing ring, elastic sealing ring is fixedly connected with the vertical plane of step by backing stop structure, the lower inside surface inwardly protruding of elastic sealing ring forms clamping section, the elastic sealing ring medial surface be positioned at above clamping section forms the sealing surface with liquid-transfering gun toggle interference fit, the surface of clamping section is circumferentially interval with the ringwise some and crowded groove that allows of U-shaped profile in vertical direction, adjacent squeezing allows the clamping section between groove form the compression convex ridge with liquid-transfering gun toggle interference fit, the upper inner face that liquid transfer gun head body is positioned at below elastic sealing ring is alternately provided with some check plates from top to bottom, gap between the medial surface of described check plate and liquid transfer gun head body forms opening.The present invention is easy to use, can effectively prevent from moving liquid pumpback, the sealing between versatility and liquid transfer gun head and stability in use good.
Description
Technical field
The present invention relates to a kind of Bioexperiment apparatus, especially relate to the anti-withdrawing pipette tip of a kind of anticreep.
Background technology
Liquid-transfering gun is the one of pipettor, and be usually used in pipetting of a small amount of or micro liquid in laboratory, the liquid-transfering gun of different size supports the use corresponding liquid transfer gun head and uses.Existing liquid transfer gun head mostly is polypropylene material and makes, and there is following problem: the sealing between (1) liquid-transfering gun toggle and liquid transfer gun head is poor, weeping can occur after imbibition; (2) frictional force between the inner wall smooth of liquid transfer gun head, and liquid-transfering gun toggle is little, and after imbibition, liquid transfer gun head easily loosens thus liquid-transfering gun toggle comes off, and stability in use is poor; (3) for ensureing the sealing between liquid transfer gun head and liquid-transfering gun toggle, need when assembling by larger power, this can cause the wearing and tearing of liquid-transfering gun toggle thus affect sealing, in addition, also easily cause liquid-transfering gun toggle excessively to insert in liquid transfer gun head, cause the damage of liquid transfer gun head; (4) moving in the process that liquid releases, if rate of withdraw is too fast, causes moving the rapid pumpback of liquid interior and pollute liquid-transfering gun toggle to liquid transfer gun head, the pollution to moving liquid next time being caused.
The Chinese patent of Authorization Notice No. CN202162005U, authorized announcement date 2012.03.14 discloses a kind of anti-withdrawing pipette tip, and it comprises rifle head, is provided with anti-pumpback bulge loop together in the nearly upper end of rifle head.Its weak point is, although anti-pumpback bulge loop can effectively prevent the pumpback moving liquid, but anti-pumpback bulge loop adds the volume of rifle head, rifle head can not be stretched in comparatively elongated container (as test tube, centrifuge tube etc.) and carry out imbibition, limit its range of application, poor universality, in addition, the sealing difference of this liquid transfer gun head still between unresolved liquid-transfering gun toggle and liquid transfer gun head and the problem of liquid transfer gun head stability in use difference.
Summary of the invention
The present invention is the problem of sealing between liquid transfer gun head in order to solve prior art and liquid-transfering gun toggle and liquid transfer gun head stability in use difference, provide a kind of structure simple, easy to use, can effectively prevent from moving liquid pumpback, the sealing between versatility and liquid transfer gun head and the good anti-withdrawing pipette tip of anticreep of stability in use.
To achieve these goals, the present invention is by the following technical solutions:
The anti-withdrawing pipette tip of a kind of anticreep, comprise liquid transfer gun head body, the upper inner face of described liquid transfer gun head body is provided with step, described step is provided with elastic sealing ring, described elastic sealing ring is fixedly connected with the vertical plane of step by backing stop structure, the lower inside surface inwardly protruding of described elastic sealing ring forms clamping section, the elastic sealing ring medial surface be positioned at above clamping section forms the sealing surface with liquid-transfering gun toggle interference fit, the surface of described clamping section is circumferentially interval with the ringwise some and crowded groove that allows of U-shaped profile in vertical direction, adjacent squeezing allows the clamping section between groove form the compression convex ridge with liquid-transfering gun toggle interference fit, the upper inner face that described liquid transfer gun head body is positioned at below elastic sealing ring is alternately provided with some check plates from top to bottom, and the gap between the medial surface of described check plate and liquid transfer gun head body forms opening.The present invention arranges elastic sealing ring in the inside, upper end of liquid transfer gun head, and elastic sealing ring is fixed in liquid transfer gun head body by backing stop structure, the lower inside surface inwardly protruding of elastic sealing ring forms clamping section, the elastic sealing ring medial surface be positioned at above clamping section forms the sealing surface with liquid-transfering gun toggle interference fit, the surface of clamping section is circumferentially interval with the ringwise some and crowded groove that allows of U-shaped profile in vertical direction, adjacent squeezing allows the clamping section between groove form the compression convex ridge with liquid-transfering gun toggle interference fit, wherein, sealing surface can closely cooperate with the toggle of liquid transfer gun head, improve sealing, after avoiding imbibition, weeping occurs, clamping section can improve the frictional force between liquid-transfering gun toggle and elastic sealing ring further, but clamping section makes liquid-transfering gun toggle not easily insert in elastic sealing ring, therefore in the surperficial vertical direction of clamping section, be circumferentially interval with the ringwise some and crowded groove that allows of U-shaped profile, adjacent squeezing allows the clamping section between groove form the compression convex ridge with liquid-transfering gun toggle interference fit, wherein, compress the contact area that convex ridge can reduce clamping section and liquid-transfering gun toggle, increase frictional force between the two, firmly can fix with elastic sealing ring after making liquid-transfering gun toggle insert liquid transfer gun head, in imbibition, move in the process of liquid and can not come off, stability is greatly improved, when liquid-transfering gun toggle inserts in elastic sealing ring, compress convex ridge again can because being subject to the extruding of liquid-transfering gun toggle be squeezed into both sides crowdedly allow in groove, thus make liquid-transfering gun toggle to insert in elastic sealing ring smoothly, and after liquid-transfering gun toggle inserts elastic sealing ring smoothly, the compression convex ridge of crimp is under the effect of restoring force, again can firm grip liquid-transfering gun toggle, by squeezing the cooperation allowing groove and compress convex ridge, can ensure that liquid-transfering gun toggle can insert in elastic sealing ring smoothly, firmly can fix with elastic sealing ring after liquid-transfering gun toggle can be made again to insert liquid transfer gun head, in imbibition, move in the process of liquid and can not come off, stability is greatly enhanced, and the check plate be arranged alternately effectively can stop the liquid that moves of pumpback, greatly reduce the kinetic energy moving liquid, thus avoid moving liquid pumpback to liquid-transfering gun toggle, the check plate being simultaneously positioned at the top can also play spacing effect, liquid-transfering gun toggle can be avoided excessively to insert in liquid transfer gun head, cause the damage of liquid transfer gun head, in addition, check plate is arranged on liquid transfer gun head inside, can not increase its volume, uses versatility good.
As preferably, described backing stop structure comprises the connection bulge loop be located on elastic sealing ring lateral surface, is circumferentially located at back stop slot on step vertical plane, the outer ledge of described connection bulge loop stretches out and forms retaining flange, described retaining flange be connected bulge loop and form the T-shaped retaining snap ring in cross section, described back stop slot entirety structure and cross section is T-shaped in the form of a ring, described retaining snap ring is positioned at back stop slot and joins with back stop slot card.The cross section of back stop slot and retaining snap ring is all T-shaped, while playing fixation, effectively can preventing liquid-transfering gun toggle from being pulled out from liquid transfer gun head body by elastic seal ring when inserting liquid transfer gun head, playing good retaining effect, improve stability in use.
As preferably, described elastic sealing ring and retaining snap ring are homogeneity integrative-structure.Homogeneity integrative-structure, easy to process, and good integral strength.
As preferably, the upper end open place of described elastic sealing ring is provided with interior chamfering.
As preferably, the cross section of described clamping section is isosceles trapezoid or circular arc.The cross section of clamping section is isosceles trapezoid or circular arc, has guide effect, is convenient to liquid-transfering gun toggle and inserts in elastic sealing ring.
As preferably, the upper and lower surface of described connection bulge loop is provided with the deformation groove of overall structure in the form of a ring, and the cross section of described deformation groove is circular arc.Deformation groove in circular arc, when assembling retaining snap ring, can providing the space that retaining flange is required because of crimp, can avoiding because retaining flange is damaged because extruding by force, is convenient to again the assembling of retaining snap ring simultaneously.
As preferably, described retaining flange away from the outer end dual-side of elastic sealing ring along being provided with outer chamfering.
As being preferable over, the downward-sloping setting of described check plate, angle of inclination is 45 ~ 60 °.The downward-sloping setting of check plate, angle of inclination is 45 ~ 60 °, the liquid that moves of pumpback is running into after check plate stops and can flow down along check plate, and flow down move the kinetic energy moving liquid that liquid can reduce pumpback further, therefore, the downward-sloping setting of check plate, angle of inclination is 45 ~ 60 ° to be had and preferably hinders back effect.
Therefore, the invention has the beneficial effects as follows: liquid transfer gun head body of the present invention arranges an elastic sealing ring at an upper portion thereof, medial surface simultaneously below elastic sealing ring is alternately provided with some check plates from top to bottom, efficiently solve the problem of sealing between liquid transfer gun head and liquid-transfering gun toggle and liquid transfer gun head stability in use difference, liquid transfer gun head structure of the present invention is simple, easy to use, stability in use and versatility good.
Accompanying drawing explanation
Fig. 1 is a kind of structure sectional view of the present invention.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
In figure: liquid transfer gun head body 1, elastic sealing ring 2, connects bulge loop 3, retaining flange 4, back stop slot 5, sealing surface 6, and the crowded groove 7 that allows, compresses convex ridge 8, check plate 9, deformation groove 10.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
The anti-withdrawing pipette tip of a kind of anticreep as shown in Figure 1, comprise liquid transfer gun head body 1, the upper inner face of liquid transfer gun head body 1 has step, step is provided with elastic sealing ring 2(as shown in Figure 2), the upper end open place of elastic sealing ring has interior chamfering, on lateral surface on elastic sealing ring 2, outwardly being formed connects bulge loop 3, the outer ledge connecting bulge loop 3 stretches out and forms retaining flange 4, retaining flange is provided with outer chamfering away from the dual-side edge, outer end of elastic sealing ring, retaining flange 4 be connected bulge loop 3 and form the T-shaped retaining snap ring in cross section, the vertical plane of step circumferentially has overall structure in the form of a ring and the T-shaped back stop slot 5 in cross section, retaining snap ring is positioned at back stop slot 5 and blocks with back stop slot 5 joins, the lower inside surface inwardly protruding Formation cross-section of elastic sealing ring 2 is the clamping section (in the present embodiment, cross section, clamping section is isosceles trapezoid) of isosceles trapezoid or circular arc, elastic sealing ring 2 medial surface be positioned at above clamping section forms the sealing surface 6 with liquid-transfering gun toggle interference fit, the surface of clamping section in vertical direction circumferentially interval have three circles ringwise and the crowded groove 7 that allows of U-shaped profile, adjacent squeezing allows the clamping section between groove 7 form the compression convex ridge 8 with liquid-transfering gun toggle interference fit, the liquid transfer gun head body 1 upper inner face be positioned at below elastic sealing ring 2 be alternately fixed with from top to bottom two pieces downward-sloping, and the angle of inclination that angle of inclination is check plate in check plate 9(the present embodiment of 45 ~ 60 ° is 45 DEG C), gap between the medial surface of check plate 9 and liquid transfer gun head body 1 forms opening.
When liquid-transfering gun toggle inserts in liquid transfer gun head of the present invention, compress convex ridge 8 can because being subject to the extruding of liquid-transfering gun toggle be squeezed into both sides crowdedly allow in groove 7, thus liquid-transfering gun toggle can be inserted in elastic sealing ring 2 smoothly, and insert after elastic sealing ring 2 smoothly until liquid-transfering gun toggle, sealing surface 6 closely cooperates with the toggle of liquid transfer gun head, improve sealing, and the compression convex ridge 8 of crimp is under the effect of restoring force, again can firm grip liquid-transfering gun toggle, liquid-transfering gun toggle and elastic sealing ring 2 are firmly fixed, in use not easily come off, good stability.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (7)
1. the anti-withdrawing pipette tip of anticreep, comprise liquid transfer gun head body (1), it is characterized in that, the upper inner face of described liquid transfer gun head body (1) is provided with step, described step is provided with elastic sealing ring (2), described elastic sealing ring (2) is fixedly connected with the vertical plane of step by backing stop structure, described backing stop structure comprises the connection bulge loop (3) be located on elastic sealing ring (2) lateral surface, circumferentially be located at the back stop slot (5) on step vertical plane, the outer ledge of described connection bulge loop (3) stretches out and forms retaining flange (4), described retaining flange (4) be connected bulge loop (3) and form the T-shaped retaining snap ring in cross section, described back stop slot (5) entirety structure and cross section is T-shaped in the form of a ring, described retaining snap ring is positioned at back stop slot (5) and blocks with back stop slot (5) joins, the lower inside surface inwardly protruding of described elastic sealing ring (2) forms clamping section, elastic sealing ring (2) medial surface be positioned at above clamping section forms the sealing surface (6) with liquid-transfering gun toggle interference fit, the surface of described clamping section is circumferentially interval with the ringwise some and crowded groove (7) that allows of U-shaped profile in vertical direction, adjacent squeezing allows the clamping section between groove (7) form the compression convex ridge (8) with liquid-transfering gun toggle interference fit, the upper inner face that described liquid transfer gun head body (1) is positioned at elastic sealing ring (2) below is alternately provided with some check plates (9) from top to bottom, and the gap between the medial surface of described check plate (9) and liquid transfer gun head body (1) forms opening.
2. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1, is characterized in that, described elastic sealing ring (2) and retaining snap ring are homogeneity integrative-structure.
3. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1 and 2, is characterized in that, the upper end open place of described elastic sealing ring (2) is provided with interior chamfering.
4. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1, is characterized in that, the cross section of described clamping section is isosceles trapezoid or circular arc.
5. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1, is characterized in that, the upper and lower surface of described connection bulge loop (3) is provided with the deformation groove (10) of overall structure in the form of a ring, and the cross section of described deformation groove (10) is circular arc.
6. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1, is characterized in that, described retaining flange (4) is provided with outer chamfering away from the dual-side edge, outer end of elastic sealing ring (2).
7. the anti-withdrawing pipette tip of a kind of anticreep according to claim 1, is characterized in that, described check plate (9) downward-sloping setting, and angle of inclination is 45 ~ 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108208.5A CN104028320B (en) | 2014-03-24 | 2014-03-24 | The anti-withdrawing pipette tip of a kind of anticreep |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108208.5A CN104028320B (en) | 2014-03-24 | 2014-03-24 | The anti-withdrawing pipette tip of a kind of anticreep |
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| Publication Number | Publication Date |
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| CN104028320A CN104028320A (en) | 2014-09-10 |
| CN104028320B true CN104028320B (en) | 2015-11-18 |
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| CN201410108208.5A Active CN104028320B (en) | 2014-03-24 | 2014-03-24 | The anti-withdrawing pipette tip of a kind of anticreep |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345784B (en) * | 2020-10-22 | 2021-09-24 | 烟台海深威软件有限公司 | Sample adding needle, needle withdrawing mechanism used for sample adding needle and needle installing and withdrawing method |
| CN112619718B (en) * | 2020-11-17 | 2022-06-14 | 浙江省海洋水产研究所 | Exempt from to uncap centrifuging tube |
| CN113083391B (en) * | 2021-04-07 | 2022-04-12 | 宁儿医院股份有限公司 | Novel liquid-transfering gun head loads device |
| CN116141568A (en) * | 2023-04-21 | 2023-05-23 | 西安峰见智能电子有限公司 | Foaming machine for EPS foam board processing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2738881Y (en) * | 2004-10-10 | 2005-11-09 | 季克和 | Pneumatic extrusion-decoy type liquid transfer device |
| US7335337B1 (en) * | 2001-09-11 | 2008-02-26 | Smith James C | Ergonomic pipette tip and adapters |
| CN201389464Y (en) * | 2009-04-28 | 2010-01-27 | 罗耿荣 | Electronic pipette with simple detachment |
-
2014
- 2014-03-24 CN CN201410108208.5A patent/CN104028320B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7335337B1 (en) * | 2001-09-11 | 2008-02-26 | Smith James C | Ergonomic pipette tip and adapters |
| CN2738881Y (en) * | 2004-10-10 | 2005-11-09 | 季克和 | Pneumatic extrusion-decoy type liquid transfer device |
| CN201389464Y (en) * | 2009-04-28 | 2010-01-27 | 罗耿荣 | Electronic pipette with simple detachment |
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| CN104028320A (en) | 2014-09-10 |
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