CN1331609C - Quantitative liquid extraction device - Google Patents
Quantitative liquid extraction device Download PDFInfo
- Publication number
- CN1331609C CN1331609C CNB2004100428788A CN200410042878A CN1331609C CN 1331609 C CN1331609 C CN 1331609C CN B2004100428788 A CNB2004100428788 A CN B2004100428788A CN 200410042878 A CN200410042878 A CN 200410042878A CN 1331609 C CN1331609 C CN 1331609C
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- CN
- China
- Prior art keywords
- piston
- needle
- sleeve
- syringe needle
- connecting rod
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 238000000605 extraction Methods 0.000 title abstract 2
- 238000002474 experimental method Methods 0.000 abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 238000005213 imbibition Methods 0.000 description 17
- 239000001963 growth medium Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009629 microbiological culture Methods 0.000 description 3
- 239000012085 test solution Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
本发明涉及一种定量取液装置，其特征在于，它包括：一种定量取液装置，其特征在于，它包括：一驱动装置，其内设置有一伸出的活塞杆；一套筒，其顶部与所述驱动装置连接，其底部具有一内缘；一连接杆，其顶部与所述驱动装置的活塞杆连接，且插设在所述套筒内；一针头活塞，其顶部外缘滑动地设置在所述套筒内，且下部外缘直径略小于所述套筒内缘，所述针头活塞底部具有一通孔；一吸液活塞，其一端连接所述连接杆，另一端滑动地设置在所述针头活塞内；一弹簧，其套设在所述吸液活塞上部，且所述弹簧一端固定在所述连接杆上，另一端固定在所述针头活塞上；一锥管式针头，其安装端具有一可套设在所述针头活塞底部的凹孔。本发明可以实现定量取液，并且不会出现被测液体的相互污染，保证了实验的准确性，还减去了设备的清洗程序，提高了实验效率，它可以广泛用于各种试剂或微生物培养液移取过程中，也可以应用在其它需要微量取液的场合。
The present invention relates to a quantitative liquid taking device, characterized in that it comprises: a quantitative liquid taking device, characterized in that it comprises: a driving device, in which a protruding piston rod is arranged; a sleeve, the The top is connected to the driving device, and its bottom has an inner edge; a connecting rod, the top of which is connected to the piston rod of the driving device, and is inserted in the sleeve; a needle piston, whose top outer edge slides and the diameter of the outer edge of the lower part is slightly smaller than the inner edge of the sleeve, and the bottom of the needle piston has a through hole; a liquid suction piston, one end of which is connected to the connecting rod, and the other end is slidably set Inside the needle piston; a spring, which is sleeved on the upper part of the liquid suction piston, and one end of the spring is fixed on the connecting rod, and the other end is fixed on the needle piston; a tapered tube needle, The installation end has a concave hole which can be sleeved on the bottom of the needle piston. The invention can realize quantitative liquid extraction without mutual contamination of the measured liquids, which ensures the accuracy of the experiment, and also reduces the cleaning procedure of the equipment, which improves the efficiency of the experiment. It can be widely used in various reagents or microorganisms In the process of pipetting the culture solution, it can also be used in other occasions that require a small amount of liquid.
Description
Technical field
The present invention relates to a kind of liquid and pipette device, particularly about the quantitative liquid taking device of a kind of reagent or microbial culture medium.
Background technology
In biological, chemical experiment, usually need to the nutrient solution of biological, microorganism and reagent pipette or quantitatively pipette operation, carry out these operations, use glass apparatus such as glue head dropper, pipette usually.Even but these instruments itself are made again for accurate, also all can not well solve two very important problem.
It at first is accuracy problem, at present in the manual operations amount of reagent of getting how much, except that part is determined by instrument precision, all the other all are experience and the judgements of depending on the experimenter, even operate very skilled experimenter, can not guarantee that the dosage of each reagent of getting under the same terms is in full accord; Because the experimental work amount is bigger, experimenter's fatigue often makes and occurs some errors in the manual operations, requires strict experiment for some sometimes, the loss that error causes occurs and usually can't retrieve.
Next is that the existing liquid instrument of getting mostly is contact and gets liquid, when getting different test solutions, preceding a kind of test solution of getting in the liquid instrument is cleaned, to avoid a kind of test solution in back contaminated; Yet the clean-up performance of cleaning instrument required time and cleaning etc. all can bring influence in various degree to experiment process and experiment effect.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of employing noncontact mode and get liquid, and get liquid measure stability height, and can improve the quantitative liquid taking device of conventional efficient.
For achieving the above object, the present invention takes following technical scheme: a kind of quantitative liquid taking device is characterized in that it comprises: a drive unit is provided with a piston rod that stretches out in it; One sleeve, its top is connected with described drive unit, and its bottom has an inner edge; One connecting rod, its top is connected with the piston rod of described drive unit, and is plugged in the described sleeve; One syringe needle piston, its top outer rim is slidingly arranged in the described sleeve, and the bottom external profile diameter is slightly less than described sleeve inner edge, and described syringe needle piston base has a through hole; One imbibition piston, the one end connects described connecting rod, and the other end is slidingly arranged in the described syringe needle piston; One spring, it is set in described imbibition piston top, and described spring one end is fixed on the described connecting rod, and the other end is fixed on the described syringe needle piston; One conical tube type syringe needle, its installation end have a shrinkage pool that can be set in described syringe needle piston base.
Described syringe needle is a disposable aspiration needle.
The present invention can also comprise a needle holder, and it has a centre bore, and has the concave station of the described syringe needle of a support at described needle holder top.
The present invention is owing to take above technical scheme, and it has the following advantages: 1, the present invention can be connected with piston rod with the cylinder body of drive unit respectively when therefore using owing to be provided with sleeve and connecting rod, realizes getting the work that surges.2, of the present invention owing on connecting rod, connected an imbibition piston, and connect a syringe needle piston that is arranged on imbibition piston outside by spring, can drive the syringe needle piston by spring force when therefore getting liquid and get syringe needle, get liquid by the imbibition piston, after getting liquid and finishing, can retract the syringe needle piston by spring force, and when the syringe needle piston is return, utilize of the structure setting of the installation portion of syringe needle, unload automatically and finished the disposable aspiration needle of getting the liquid conduct greater than the sleeve inner edge.3, the present invention is owing to be to adopt structure control to get liquid measure fully, rather than relies on artificial experience to get liquid, therefore, can realize the quantitative liquid getting of strict conformance, and then guarantee the true and reliable property of experiment structure.4, the present invention is because to get liquid measure very little at every turn, and liquid is contaminated pinhead itself only, after using up syringe needle is backed off at every turn, concentrates cleaning and sterilizing, and needn't other parts be cleaned or sterilize, so the raising conventional efficient of can saving time.5, the present invention is because owing to can adopt disposable liquid tubular type syringe needle, and this syringe needle generally can be made with plastic material with low cost, need not clean after being used to complete, only need to concentrate to abandon or handle, further save the operation of cleaning and sterilizing syringe needle.The present invention can be widely used in all ingredients or microbial culture medium pipettes the process operation, also can be applied in the occasion that other needs trace to get liquid.
Description of drawings
Fig. 1 is a structural representation of the present invention
The specific embodiment
As shown in Figure 1, the present invention includes a sleeve 1, its top has an outer rim 11, and its bottom has an inner edge 12, has some installing holes 13 on the outer rim 11.One connecting rod 2, it is arranged in the sleeve 1, and connecting rod 2 tops have a screw 21, and it can be connected on the piston rod 9 of drive unit 8 (such as cylinder, hydraulic cylinder etc.) in use.One syringe needle piston 3, its top outer rim 31 is slidingly arranged in the sleeve 1, and outer rim 32 diameters in its underpart are slightly less than the inner edge 12 of sleeve 1, so that can pass from inner edge 12, have a through hole 33 in the bottom of syringe needle piston 3.One imbibition piston 4, one end are stocks 41, and the top of stock 41 is fixed on the bottom of connecting rod 2, and the other end of imbibition piston 4 is slidingly arranged in the syringe needle piston 3.One spring 5, it is set on the stock 41 of imbibition piston 4, and an end of spring 5 is fixed on the connecting rod, and the other end is fixed on the syringe needle piston 3.Several disposable conical tube type syringe needles 6, the installation end of each syringe needle 6 has a shrinkage pool 61 that can be set in syringe needle piston 3 bottoms, because the effect of syringe needle 6 only is imbibition, therefore can adopt more expensive materials such as metal, and adopt the dog-cheap disposable plastic syringe needle of price.
For with the supporting use of integral device of another invention of the applicant " a kind of liquid spray equipment of getting " (separate case is applied for a patent), the present invention can also be provided with a needle holder 7, have a centre bore 71 on the needle holder 7, and have the concave station 72 of a support 6 syringe needles at needle holder 7 tops.
The present invention is that the power set with integral device are used, at first there is the needle holder 7 of syringe needle 6 to be pushed into the bottom of sleeve 1 support by artificial or conveying device, and startup drive unit 8, making its piston rod 9 drive connecting rod 2 of the present invention moves downward, the imbibition piston 4 of connecting rod 2 ends just moves downward in syringe needle piston 3, meanwhile, the spring 5 of pressurized will promote syringe needle piston 3 and stretch out sleeve 1 downwards, after the bottom of syringe needle piston 3 embeds the concave station 72 of disposable aspiration needle 6, piston rod 9 stop motions, syringe needle 6 just is enclosed within syringe needle piston 3 ends, finishes and gets the syringe needle action.
The whole then power set 8 of getting the liquid spray equipment move drive unit 8 of the present invention on the whole, and move to the place that holds reagent or microbial culture medium, piston rod continues to drive syringe needle piston 3 by connecting rod 2 and spring 5 and moves downward, prop up the bottom inner edge 12 of sleeve 1 until the top of syringe needle piston 3 outer rim 31, syringe needle piston 3 no longer moves relative to sleeve 1, and piston rod 9 continues to move down by connecting rod 2 drive imbibition pistons 4, extrude the gas in the syringe needle piston 3, be against the through hole 33 of syringe needle piston 3 bottoms until imbibition piston 4 bottoms, the exhaust action is finished in piston rod 9 stop motions.
Then the piston rod 9 of drive unit 8 drives connecting rods 2 and oppositely upwards regains, because spring 5 was in and returned to form this moment, so spring 5 still keeps the downward pressure of syringe needle piston 3, and syringe needle piston 3 keeps motionless, imbibition piston 4 imbibition that moves upward.Because liquid absorption is very little, so liquid exists only in the syringe needle 6, and can upwards not enter other position.
When the imbibition action is finished, imbibition piston 4 has withstood on the top of syringe needle piston 3, and piston rod 9 also drives spring 5 by connecting rod 2 and syringe needle piston 3 moves upward, pass sleeve 1 bottom inner edge 12 until syringe needle piston 3 bottom outer rims 32, and syringe needle 6 top card are in the bottom of inner edge 12, can not continue to move upward, and be pushed out the bottom of syringe needle piston 3, the withdraw of the needle 6 action are finished.
Action description when the embodiment of said apparatus and operation; be in order to be illustrated more clearly in technical scheme of the present invention; but should be as the restriction of protection domain of the present invention; the concrete structures more of the present invention and the kind of drive all can change to some extent; such as all can changing specific to the shape of sleeve 1, syringe needle piston 3, imbibition piston 4 and syringe needle 5 and the material of use, the connected mode of each parts and with the setting of the tie point of other single unit system be connected employed securing member and also can change.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100428788A CN1331609C (en) | 2004-05-28 | 2004-05-28 | Quantitative liquid extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100428788A CN1331609C (en) | 2004-05-28 | 2004-05-28 | Quantitative liquid extraction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1704168A CN1704168A (en) | 2005-12-07 |
| CN1331609C true CN1331609C (en) | 2007-08-15 |
Family
ID=35575964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100428788A Expired - Fee Related CN1331609C (en) | 2004-05-28 | 2004-05-28 | Quantitative liquid extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1331609C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486540B (en) * | 2016-01-15 | 2018-04-24 | 杭州景业智能科技有限公司 | The accurate sampler of dusty material |
| CN108395982B (en) * | 2018-05-30 | 2024-04-23 | 厦门市科环海洋生物科技有限公司 | Colony spraying device |
| CN110057624B (en) * | 2019-04-28 | 2024-04-05 | 深圳市大肯科技有限公司 | Air pump |
| CN115920992B (en) * | 2022-12-13 | 2023-09-26 | 康容生物科技(太仓)有限公司 | Anti-vibration automatic pipetting device and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2068418U (en) * | 1989-12-21 | 1991-01-02 | 西南石油学院 | Batch liquid-removing apparatus for chemical test |
| US5355738A (en) * | 1991-01-07 | 1994-10-18 | Labsystems Oy | Positive-displacement pipette |
| CN1248495A (en) * | 1998-09-22 | 2000-03-29 | 陈国君 | Quick adjustable pipette |
| CN2447765Y (en) * | 2000-09-05 | 2001-09-12 | 王振明 | Pipet |
| US20030099576A1 (en) * | 2001-09-10 | 2003-05-29 | Xingguo Li | Fibrous self-sealing components |
| US20030099578A1 (en) * | 2001-10-16 | 2003-05-29 | Richard Cote | Hand-held pipettor |
-
2004
- 2004-05-28 CN CNB2004100428788A patent/CN1331609C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2068418U (en) * | 1989-12-21 | 1991-01-02 | 西南石油学院 | Batch liquid-removing apparatus for chemical test |
| US5355738A (en) * | 1991-01-07 | 1994-10-18 | Labsystems Oy | Positive-displacement pipette |
| CN1248495A (en) * | 1998-09-22 | 2000-03-29 | 陈国君 | Quick adjustable pipette |
| CN2447765Y (en) * | 2000-09-05 | 2001-09-12 | 王振明 | Pipet |
| US20030099576A1 (en) * | 2001-09-10 | 2003-05-29 | Xingguo Li | Fibrous self-sealing components |
| US20030099578A1 (en) * | 2001-10-16 | 2003-05-29 | Richard Cote | Hand-held pipettor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1704168A (en) | 2005-12-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20120528 |