CN103623878A - Liquid-to-gas volumetric liquid transfer device - Google Patents
Liquid-to-gas volumetric liquid transfer device Download PDFInfo
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- CN103623878A CN103623878A CN201310685808.3A CN201310685808A CN103623878A CN 103623878 A CN103623878 A CN 103623878A CN 201310685808 A CN201310685808 A CN 201310685808A CN 103623878 A CN103623878 A CN 103623878A
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Abstract
The invention discloses a liquid-to-gas volumetric liquid transfer device which comprises a liquid transfer device main body mechanism, wherein a quantitative adjusting mechanism which is communicated with the liquid transfer device main body mechanism and can perform quantitative liquid transfer and zeroing adjustment is sleeved on the liquid transfer device main body mechanism; the liquid transfer device main body mechanism comprises a liquid transfer device main body tube; the upper and lower ends of the liquid transfer device main body tube are respectively connected with an upper piston component and a lower piston component through threads; the quantitative adjusting mechanism comprises an annular quantitative tube which can be sleeved in an annular groove of an adjusting ring; an annular quantitative tube communicating hole which corresponds to and is communicated with a communicating hole in a tube wall of the liquid transfer device is formed in the annular quantitative tube; a zeroing adjusting tube and a quantitative adjusting tube communicated with the annular quantitative tube are arranged on the upper and lower parts of the annular quantitative tube; the zeroing adjusting tube and the quantitative adjusting tube are respectively and correspondingly arranged in an upper adjusting tube groove and a lower adjusting tube groove; a zeroing adjusting piston mechanism and a quantitative adjusting quantitative adjusting are respectively and correspondingly arranged in the zeroing adjusting tube and the quantitative adjusting tube. The liquid-to-gas volumetric liquid transfer device is novel in structure, small in size, low in construction cost, high in quantitative speed, convenient and practical.
Description
Technical field
The present invention relates to a kind of liquid for Bioexperiment and chemical experiment and turn gas volume type pipettor.
Background technology
At present, in chemical experiment and Bioexperiment, need to use micropipette device, more commonly use now compass rotation to regulate cavity size, press ceiling button and push default predetermined amount air, the principle of unclamping ceiling button suction phase equivalent liquid realizes and pipettes micro liquid, its complex structure, complex process, production difficulty is high, fragile, and accuracy variation gradually in use.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of liquid to turn gas volume type pipettor, it is simple in structure, low cost, and principle is simple, and service speed is fast.
For achieving the above object, the present invention adopts following technical proposals:
Liquid turns a gas volume type pipettor, comprises pipettor main body mechanism, is arranged with the quantitative governor motion that communicates with it and can quantitatively move liquid and make zero and regulate on pipettor main body mechanism; Described pipettor main body mechanism comprises pipettor main body tube, and pipettor main body tube upper and lower side is connected with lower piston assembly with upper piston assembly by screw thread respectively;
Described upper piston assembly comprises the annular button locking cap being threaded with pipettor main body tube upper end, in the interior ring of annular button locking cap, penetrate button, and button lower end is provided with the flange of horizontal outer, lip diameter is greater than the diameter of the interior ring of annular button locking cap, button lower end contacts with light spring upper end in upper piston, light spring bottom extend in the blind hole of upper end open of upper piston in upper piston, and upper piston extend into the cavity of pipettor main body tube from top; In upper piston, light spring outer cover has common spring, and the lower end of common spring is stuck on spacer ring, and spacer ring bottom is provided with brute spring, and brute spring lower end is arranged on a boss in pipettor main body tube inwall; The upper surface of upper piston flushes with spacer ring upper surface.
Described lower piston assembly comprises from lower end and extend into the lower piston pipettor main body tube cavity, in lower piston, be provided with the blind hole of lower ending opening, in blind hole, be provided with light spring in lower piston, the lower end of lower piston light spring withstands on the lower piston spring fastening in the lower wall funnel being connected with pipettor main body tube, and lower wall funnel lower end is provided with liquid-transfering needle ring.
Described pipettor main body tube outer wall middle part is provided with the adjustable ring annular groove matching with quantitative governor motion, and the rise pipe joint groove and the lower adjustable pipe groove that are arranged at adjustable ring annular groove upper and lower and communicate with it; And in adjustable ring annular groove, be provided with the pipettor tube wall intercommunicating pore communicating with the inner chamber of pipettor main body tube.
The upper port outside of described pipettor main body tube is provided with for holding the crotch of true feeling by being fixed on increase on palm.
The upper port outside of described pipettor main body tube is also provided with a withdraw of the needle button, and in this button, card is established a withdraw of the needle bar, and withdraw of the needle bar lower end is connected with the withdraw of the needle shell being enclosed within on lower wall funnel.
In described lower piston, light spring elastic force is greater than the elastic force of light spring in upper piston.
Described quantitative governor motion comprises that one can be enclosed within the annular quantity tube in adjustable ring annular groove, described annular quantity tube is provided with annular quantity tube intercommunicating pore corresponding with pipettor tube wall intercommunicating pore and that communicate, annular quantity tube is respectively equipped with make zero adjustable pipe and the quantitative adjustable pipe communicating with it up and down, make zero adjustable pipe and quantitatively adjustable pipe respectively correspondence be arranged in described rise pipe joint groove and lower adjustable pipe groove, make zero adjustable pipe and quantitatively in adjustable pipe respectively correspondence be provided with make zero regulating piston mechanism and quantitative adjustable pipe piston mechanism.
The described regulating piston mechanism of making zero comprises and is located at the release handle piston that makes zero making zero in adjustable pipe, is connected with the adjustable pipe pipe handle that makes zero on the release handle piston that makes zero, and the end of the adjustable pipe pipe handle that makes zero is provided with the release handle anti-back projection that makes zero of outwardly curved shape.
Described quantitative adjustable pipe piston mechanism comprises the quantity tube pipe handle piston of being located in quantitative adjustable pipe, on quantity tube pipe handle piston, is connected with quantity tube pipe handle, and the end of quantity tube pipe handle is provided with the quantity tube handle anti-back projection of outwardly curved shape.
Integral body of the present invention can be decomposed into three parts: pipettor main body, quantitative adjustable ring, ejector rod.
First be around the quantitative adjustable ring in pipettor main body, bottom adjustable pipe is quantitative, according to the pipettor amount of pipetting, design its size, adjustable pipe top indicates scale, each adjustable pipe is fixed as nml, when needs pipette n1ml liquid, n1ml liquid in adjustable pipe is injected in pipette cavity, top adjustable pipe is the adjustable pipe that makes zero.
The main body of pipettor is annular wall, upper and lower both ends open passes through piston closes, centre position is communicated with quantitative adjustable ring by aperture, there is a button upper end, between button and upper piston, pipettor main body, have spring to be connected, the spring between button and upper piston is light spring, guarantees that upper piston and mid portion liquid medium are closely knit, spring between button and pipettor main body is common spring, for push-button reset after release button.At experiment middle and upper part button, press in process, promote upper piston and move down, can encounter spacer ring, have brute spring below spacer ring, play fixedly spacer ring function of height.Before experiment, regulating adjustable pipe is all zero, the top that guarantees upper piston flushes with spacer ring upper end, when now pressing top button and touching spacer ring, upper piston non-displacement, if there is displacement, regulate top adjustable pipe, by filling liquid or sucking liquid, by upper piston top, flush with spacer ring top.
Lower piston seals bottom, below lower piston, supporting spring, this spring is also light spring, but its elastic force is greater than the spring force of upper piston top, thereby guarantee lower piston non-displacement when adjustable pipe injects n1 ml liquid toward pipettor body interior and in upper piston, move n1 ml volume, now press upper springs, encountering top spacer ring stops upper piston and moves down n1 ml volume, lower piston moves down n1 ml volume, now the confined space of lower piston bottom is discharged n1 ml air, now the liquid-transfering needle pipe being arranged in liquid-transfering needle ring is placed in the liquid that need to move liquid, discharge top button, lower piston by move n1 ml space and suck n1 ml liquid simultaneously.During discharge opeing, press top button and discharge the liquid of liquid-transfering needle pipe inside, under can continuing, press after arrival spacer ring, the volume storing by brute spring guarantees that the drain of liquid-transfering needle pipe is clean.
Novel structure of the present invention, volume is little, and cost is low, and quantitatively speed is fast, convenient and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the total view of pipettor main body;
Fig. 3 is pipettor body portion view one;
Fig. 4 is pipettor body portion view two;
Fig. 5 is pipettor body portion view three;
Fig. 6 is pipettor body portion view four;
Fig. 7 is pipettor body portion view five;
Fig. 8 is pipettor body portion view six;
Fig. 9 is pipettor body portion view seven;
Figure 10 is pipettor body portion view eight;
Figure 11 is pipettor body portion view nine;
Figure 12 is pipettor body portion view ten;
Figure 13 is pipettor body portion view 11;
Figure 14 is pipettor body portion view 12;
Figure 15 is the total view of quantitative adjustable ring;
Figure 16 makes zero to regulate endless tube handle view;
Figure 17 quantitatively regulates endless tube handle view;
A wherein, pipettor main body tube, B, quantitative governor motion, C, withdraw of the needle bar, A1, pipettor main body tube wall, A2, crotch, A3, withdraw of the needle button, A4, adjustable ring annular groove, A5, raise pipe joint groove, A6, lower adjustable pipe groove, A7, brute spring, A8, spacer ring, A9, common spring, A10, upper piston, A11, light spring in upper piston, A12, button, A13 button locking cap, A14, lower piston, A15, light spring in lower piston, A16, lower piston spring fastening, A17, lower wall funnel, A18, liquid-transfering needle ring, A19, withdraw of the needle shell, A20, pipettor tube wall intercommunicating pore, B1, annular quantity tube, B2, adjustable pipe makes zero, B3, quantitative adjustable pipe, B4, annular quantity tube intercommunicating pore, B5, adjustable pipe pipe handle makes zero, B6, release handle anti-back projection makes zero, B7, release handle piston makes zero, B8, quantity tube pipe handle, B9, quantity tube handle anti-back projection, B10, quantity tube pipe handle piston.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Liquid turns gas volume type pipettor, A shown in Fig. 1 is pipettor agent structure, B is quantitative governor motion, pipettor main body tube A outer wall middle part is provided with the adjustable ring annular groove A4 matching with quantitative governor motion, and the rise pipe joint groove A5 and the lower adjustable pipe groove A6 that are arranged at adjustable ring annular groove A4 upper and lower and communicate with it; And in adjustable ring annular groove A4, be provided with the pipettor tube wall intercommunicating pore A20 communicating with the inner chamber of pipettor main body tube.
Quantitatively governor motion B comprises that one can be enclosed within the annular quantity tube B1 in adjustable ring annular groove A4, described annular quantity tube B1 is provided with annular quantity tube intercommunicating pore B4 corresponding with pipettor tube wall intercommunicating pore A20 and that communicate, annular quantity tube B1 is respectively equipped with make zero adjustable pipe B2 and the quantitative adjustable pipe B 3 communicating with it up and down, make zero adjustable pipe B 2 and quantitatively adjustable pipe B3 respectively correspondence be arranged in described rise pipe joint groove A 5 and lower adjustable pipe groove A 6, make zero adjustable pipe B2 and quantitatively in adjustable pipe B 3 respectively correspondence be provided with make zero regulating piston mechanism and quantitative adjustable pipe piston mechanism.
The regulating piston mechanism of making zero comprises and is located at the release handle piston B7 that makes zero making zero in adjustable pipe B 2, make zero on release handle piston B7 and be connected with the adjustable pipe pipe handle B5 that makes zero, the end of the adjustable pipe pipe handle B5 that makes zero is provided with the release handle anti-back projection B 6 that makes zero of outwardly curved shape.
Quantitatively adjustable pipe piston mechanism comprises the quantity tube pipe handle piston B10 being located in quantitative adjustable pipe B 3, on quantity tube pipe handle piston B10, is connected with quantity tube pipe handle B8, and the end of quantity tube pipe handle B8 is provided with the quantity tube handle anti-back projection B9 of outwardly curved shape.
Withdraw of the needle bar C upper end is connected with withdraw of the needle button A3, and lower end is connected with withdraw of the needle shell A19.When pressing withdraw of the needle button, withdraw of the needle bar causes that withdraw of the needle shell moves down, and the liquid-transfering needle being arranged on liquid-transfering needle ring A18 is laid down.
Button locking cap A13 docks by screw thread is closely knit with pipettor main body tube wall A1, and pipettor main body tube wall A1 is connected by screw thread is closely knit with lower wall funnel A17.In the middle of pipettor main body tube wall A1, it is cavity, top is sealed by upper piston A10, bottom is sealed by lower piston A14, crotch A2 is for increasing and hold true feeling by being fixed on palm, spacer ring A8 is limited in brute spring in the inside groove on pipettor main body tube wall A1 top by outside projection, between button A12 and piston A10, there is light spring A11, lower piston spring fastening A16 is the spring fastening on lower wall funnel A17 top, between lower piston A14 and lower wall funnel A17, be light spring A15 in lower piston, in lower piston, light spring A15 elastic force is greater than light spring A11 in upper piston, thereby guarantee that lower piston projection abuts against pipettor tube wall bottom.Common spring A9 is for the reset of button after release button A12, button locking cap A13 is the restriction cap of button A12, pipettor tube wall intercommunicating pore A20, annular quantity tube intercommunicating pore B4, these two holes are communicated with annular quantity tube and pipettor tube wall inner chamber, the adjustable pipe handle B5 that makes zero is enclosed within the adjustable pipe B2 that makes zero, quantitatively adjustable pipe handle B8 is enclosed within quantitative adjustable pipe B3, the release handle anti-back projection of making zero B6, quantity tube handle anti-back projection B9 are retaining projection, prevent from moving liquid process that tube chamber internal pressure increases to cause managing handle and shrink back.
Move before liquid, upper piston A10 flushes with the top of spacer ring A8, presses the button like this after A12, and button A12 encounters the top upper piston A10 non-displacement of spacer ring A8.
Move in liquid process, if need to move liquid Nml liquid, push so quantity tube handle B8, inject Nml liquid in pipettor main body tube chamber, now in lower piston, light spring A15 elastic force is greater than light spring A11 in upper piston, moves Nml volume in upper piston.
Press top button A12, arriving spacer ring A8 top resistance increases, stop continuing to press, upper piston moves down volume Nml, by intermediate medium, by lower piston A14, moves down Nml volume, now in lower wall funnel A17 cavity, discharges Nml volumes of gas, now the liquid-transfering needle being enclosed within on liquid-transfering needle ring A18 is inserted in liquid, release button A12, spring resets by lower piston, and Nml liquid enters in liquid-transfering needle so.
During discharge opeing, press the button A12, repeat a process, button bottom stops pressing while encountering spacer ring top, now lower piston moves down Nml volume, liquid in liquid-transfering needle is drained, but now tend to residual fraction liquid on liquid-transfering needle, continue firmly to cause brute spring A7 compression, the volume storing by brute spring A7 is the liquid emptying in liquid-transfering needle.Release button, all parts reset.
In use procedure, may cause that pipettor moves liquid measure and has error for a long time, when quantitatively adjustable pipe makes zero, by the adjustable pipe pipe handle that makes zero, regulate upper piston A10 is flushed with spacer ring A8 top, thereby eliminate error.
After experiment finishes, press withdraw of the needle button A3, cause that withdraw of the needle bar C, withdraw of the needle shell A19 move down, and unload the liquid-transfering needle being fixed on liquid-transfering needle ring A18.
The structure of above-mentioned not detailed description, structure, under being, the common practise in field, can realize by conventional method, does not repeat them here.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (9)
1. liquid turns a gas volume type pipettor, it is characterized in that, comprises pipettor main body mechanism, is arranged with the quantitative governor motion that communicates with it and can quantitatively move liquid and make zero and regulate on pipettor main body mechanism; Described pipettor main body mechanism comprises pipettor main body tube, and pipettor main body tube upper and lower side is connected with lower piston assembly with upper piston assembly by screw thread respectively;
Described quantitative governor motion comprises that one can be enclosed within the annular quantity tube in adjustable ring annular groove, described annular quantity tube is provided with annular quantity tube intercommunicating pore corresponding with pipettor tube wall intercommunicating pore and that communicate, annular quantity tube is respectively equipped with make zero adjustable pipe and the quantitative adjustable pipe communicating with it up and down, make zero adjustable pipe and quantitatively adjustable pipe respectively correspondence be arranged in described rise pipe joint groove and lower adjustable pipe groove, make zero adjustable pipe and quantitatively in adjustable pipe respectively correspondence be provided with make zero regulating piston mechanism and quantitative adjustable pipe piston mechanism.
2. liquid as claimed in claim 1 turns gas volume type pipettor, it is characterized in that, described upper piston assembly comprises the annular button locking cap being threaded with pipettor main body tube upper end, in the interior ring of annular button locking cap, penetrate button, and button lower end is provided with the flange of horizontal outer, lip diameter is greater than the diameter of the interior ring of annular button locking cap, button lower end contacts with light spring upper end in upper piston, light spring bottom extend in the blind hole of upper end open of upper piston in upper piston, and upper piston extend into the cavity of pipettor main body tube from top; In upper piston, light spring outer cover has common spring, and the lower end of common spring is stuck on spacer ring, and spacer ring bottom is provided with brute spring, and brute spring lower end is arranged on a boss in pipettor main body tube inwall; The upper surface of upper piston flushes with spacer ring upper surface.
3. liquid as claimed in claim 2 turns gas volume type pipettor, it is characterized in that, described lower piston assembly comprises from lower end and extend into the lower piston pipettor main body tube cavity, in lower piston, be provided with the blind hole of lower ending opening, in blind hole, be provided with light spring in lower piston, the lower end of lower piston light spring withstands on the lower piston spring fastening in the lower wall funnel being connected with pipettor main body tube, and lower wall funnel lower end is provided with liquid-transfering needle ring.
4. liquid as claimed in claim 1 turns gas volume type pipettor, it is characterized in that, described pipettor main body tube outer wall middle part is provided with the adjustable ring annular groove matching with quantitative governor motion, and the rise pipe joint groove and the lower adjustable pipe groove that are arranged at adjustable ring annular groove upper and lower and communicate with it; And in adjustable ring annular groove, be provided with the pipettor tube wall intercommunicating pore communicating with the inner chamber of pipettor main body tube.
5. liquid as claimed in claim 1 turns gas volume type pipettor, it is characterized in that, the upper port outside of described pipettor main body tube is provided with for holding the crotch of true feeling by being fixed on increase on palm.
6. liquid as claimed in claim 3 turns gas volume type pipettor, it is characterized in that, the upper port outside of described pipettor main body tube is also provided with a withdraw of the needle button, and in this button, card is established a withdraw of the needle bar, and withdraw of the needle bar lower end is connected with the withdraw of the needle shell being enclosed within on lower wall funnel.
7. liquid as claimed in claim 3 turns gas volume type pipettor, it is characterized in that, in described lower piston, light spring elastic force is greater than the elastic force of light spring in upper piston.
8. liquid as claimed in claim 1 turns gas volume type pipettor, it is characterized in that, the described regulating piston mechanism of making zero comprises and is located at the release handle piston that makes zero making zero in adjustable pipe, make zero on release handle piston and be connected with the adjustable pipe pipe handle that makes zero, the end of the adjustable pipe pipe handle that makes zero is provided with the release handle anti-back projection that makes zero of outwardly curved shape.
9. liquid as claimed in claim 1 turns gas volume type pipettor, it is characterized in that, described quantitative adjustable pipe piston mechanism comprises the quantity tube pipe handle piston of being located in quantitative adjustable pipe, on quantity tube pipe handle piston, be connected with quantity tube pipe handle, the end of quantity tube pipe handle is provided with the quantity tube handle anti-back projection of outwardly curved shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685808.3A CN103623878B (en) | 2013-12-16 | 2013-12-16 | Liquid-to-gas volumetric liquid transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685808.3A CN103623878B (en) | 2013-12-16 | 2013-12-16 | Liquid-to-gas volumetric liquid transfer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103623878A true CN103623878A (en) | 2014-03-12 |
| CN103623878B CN103623878B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685808.3A Active CN103623878B (en) | 2013-12-16 | 2013-12-16 | Liquid-to-gas volumetric liquid transfer device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139718A (en) * | 2016-11-14 | 2019-08-16 | 艾卡工厂有限及两合公司 | Hand-held dosing device |
| CN117244602A (en) * | 2023-09-28 | 2023-12-19 | 康容生物科技(太仓)有限公司 | Integrated external piston pipette suction head |
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| US4304138A (en) * | 1979-01-23 | 1981-12-08 | Kommandiittiyhtio Finnpipette Osmo A. Suovaniemi | Multi-dose pipette |
| CN1158579A (en) * | 1994-08-16 | 1997-09-03 | 埃里克·马尔托多特里 | Pipette for distributing succesive volumes of a liquid |
| CN201086016Y (en) * | 2007-08-28 | 2008-07-16 | 大龙医疗设备(上海)有限公司 | Multi-gear fast liquid shifter |
| CN101912794A (en) * | 2008-09-12 | 2010-12-15 | 埃佩多夫股份公司 | Pipette device |
| CN103201038A (en) * | 2011-09-30 | 2013-07-10 | 埃佩多夫股份公司 | Syringe with syringe cylinder with code and test elements |
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2013
- 2013-12-16 CN CN201310685808.3A patent/CN103623878B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304138A (en) * | 1979-01-23 | 1981-12-08 | Kommandiittiyhtio Finnpipette Osmo A. Suovaniemi | Multi-dose pipette |
| CN1158579A (en) * | 1994-08-16 | 1997-09-03 | 埃里克·马尔托多特里 | Pipette for distributing succesive volumes of a liquid |
| CN201086016Y (en) * | 2007-08-28 | 2008-07-16 | 大龙医疗设备(上海)有限公司 | Multi-gear fast liquid shifter |
| CN101912794A (en) * | 2008-09-12 | 2010-12-15 | 埃佩多夫股份公司 | Pipette device |
| CN103201038A (en) * | 2011-09-30 | 2013-07-10 | 埃佩多夫股份公司 | Syringe with syringe cylinder with code and test elements |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139718A (en) * | 2016-11-14 | 2019-08-16 | 艾卡工厂有限及两合公司 | Hand-held dosing device |
| CN117244602A (en) * | 2023-09-28 | 2023-12-19 | 康容生物科技(太仓)有限公司 | Integrated external piston pipette suction head |
| CN117244602B (en) * | 2023-09-28 | 2024-05-24 | 康容生物科技(太仓)有限公司 | Integrated external piston pipette suction head |
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