CN202015624U - Accuracy fine-tunable pipettor - Google Patents
Accuracy fine-tunable pipettor Download PDFInfo
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- CN202015624U CN202015624U CN2011201035828U CN201120103582U CN202015624U CN 202015624 U CN202015624 U CN 202015624U CN 2011201035828 U CN2011201035828 U CN 2011201035828U CN 201120103582 U CN201120103582 U CN 201120103582U CN 202015624 U CN202015624 U CN 202015624U
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- pipettor
- fine
- tuning
- precision
- bar
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Abstract
The embodiment of the utility model discloses an accuracy fine-tunable pipettor, which comprises a liquid-absorbing rod 20, a handle 13 served as a shell, fine-tuning rotary quantifying rod 1, an inner chamber 23 and a piston rod 17 arranged in the inner chamber 23. The accuracy fine-tunable pipettor is characterized by further comprising a fixed display scale mirror 2 arranged on the handle 13 served as the shell; the part of the inner chamber 23 opposite to the position of the fixed display scale mirror 2 is provided with a sliding micro-calibration block 6; and the sliding micro-calibration block 6 is in synchronized motion with the fine-tuning rotary quantifying rod 1 and the piston rod 17. The accuracy fine-tunable pipettor provided by the embodiment of the utility model has high accuracy for liquid-removing measuring and can effectively eliminate accumulated discrepancy; and meanwhile, the pipettor has a simple structure and relatively low cost.
Description
Technical field
The utility model relates to accurate measuring device field, relates in particular to the fine-tuning pipettor of a kind of precision.
Background technology
Pipettor is common instrument, the especially micropipettor in clinical diagnosis laboratory, Biotechnology Experiment chamber, pharmacy and chemical laboratory, environmental laboratory and the food laboratory, plays a very important role in meticulous experiment.Micropipettor is divided into quantitatively and adjustable two kinds, and existing fine-tuning pipettor specification has multiple, comprises the Volume Changes from 0.1ul ~ 5ml, satisfies conventional needs.But it is not high that it moves the liquid certainty of measurement, and to move the liquid measure error bigger because the long-term accumulated error of using causes.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of accurate fine-tuning pipettor simple in structure is provided, and improves and moves the precision that liquid is measured.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of precision fine-tuning pipettor, comprise imbibition bar 20, the double handle 13 of doing shell, the quantitative bar 1 of fine setting rotation, inner chamber 23 and the piston rod 17 that places described inner chamber 23, it is characterized in that: also comprise the fixedly display scale mirror 2 that places on the described double handle 13 of doing shell, the position relative with described fixedly display scale mirror 2 positions at described inner chamber 23 is provided with slip microdial piece 6, and described slip microdial piece 6 rotates quantitative bar 1 with described fine setting and described piston rod 17 is synchronized with the movement.
Further, also comprise the vernier knob 5 that is connected with described slip microdial piece 6, the lower end of described vernier knob 5 is provided with fine setting spring 4, is used to regulate zero graduation on the described slip microdial piece 6 and the zero graduation on the described fixedly display scale mirror 2 and aligns.
Further, comprise also with described fine setting and rotate screw rod 11, the nut 12 that quantitative bar 1 matches and uses that described screw rod 11, nut 12 link to each other with piston seat 15 by push rod Connection Block 14, described piston rod 17 places on the described piston seat 15.
Further, described piston seat 15 belows are provided with back-moving spring 7 and excessive extrusion back-moving spring 9.
Further, also comprise the distance rod 21 that is used with described imbibition bar 20 that is sleeved on the described imbibition bar 20, be used for imbibition nozzle is taken off from described imbibition bar 20.
Further, adopt teflin ring 18 and " O " RunddichtringO 19 to carry out seal isolation between inner chamber 23 front ends of described pipettor and the rear end.
Further, the position of applying mechanically imbibition nozzle, the lower end of described imbibition bar 20 is provided with O RunddichtringO 22.
Further, described fixedly display scale mirror 2 each minimum scale lattice representative move the long-pending 5.0ul of liquid, and described slip microdial piece 6 each minimum scale lattice representative move the long-pending 0.25ul of liquid.
Implement the accurate fine-tuning pipettor that the utility model embodiment provides, have following beneficial effect:
1, it moves liquid measure and is determined in the distance that the pipettor inner chamber moves by the piston rod of a no-float.Utilize the principle of air displacement, in pipettor, make to decide Cheng Yundong, produce negative pressure, suck quantitative liquid by piston rod.The parts of instrument itself are less, and are simple in structure, and it moves the liquid capacity and can show clearly in the fixedly display scale mirror of pipettor and slip microdial piece, can regulate and reach required capacity by the quantitative bar of manual adjustments fine setting rotation again.In range 0.5 ~ 10ul, theoretical certainty of measurement can reach 0.025ul, and available accuracy can reach 0.05ul.
2, be provided with vernier knob and the fine setting spring that is connected with described slip microdial piece, realized fine setting check and correction datum mark, eliminated the accumulated error that assembling, manufacturing etc. produce from structure.Simultaneously, also the check and correction datum mark be can finely tune, certainty of measurement and service life increased substantially the accumulated error that long-term use produces.
3, sealing ring fells and transports polytetrafluoroethylmaterial material, and the dynamic pressure sealing is to the equilibrium of piston rod radial pressure.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The accurate fine-tuning pipettor internal structure schematic diagram that Fig. 1 provides for the utility model;
The fixedly display scale mirror of the accurate fine-tuning pipettor that Fig. 2 provides for the utility model and the positional structure schematic diagram of slip microdial piece.
The specific embodiment
The accurate fine-tuning pipettor that the utility model embodiment provides moves liquid certainty of measurement height, and simultaneously, the fine-tuning pipettor of this precision is simple in structure, cost is low.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, be the accurate fine-tuning pipettor internal structure schematic diagram that the utility model provides, as shown in Figure 1, the fine-tuning pipettor of this precision comprises:
Have liquid sucting port imbibition bar 20, be sleeved on the distance rod 21 that is used with described imbibition bar 20 on the described imbibition bar 20, be sleeved on the double handle 13 of doing shell on the described distance rod 21, the quantitative bar 1 of fine setting rotation and rotate quantitative bar 1 and the described double handle 13 of doing shell surrounds the inner chamber 23 that forms by described fine setting.
The inner chamber 23 of described pipettor is a cavity, is divided into front end and rear end two parts, adopts teflin ring 18 and O RunddichtringO 19 to carry out seal isolation between described fore-end and the rear end part, and dynamic seal (packing) is reliable.Described fine setting is rotated the lower end of quantitative bar 1 and is stretched in the rear end part of described inner chamber 23, fixes with screw rod 11 in the described inner chamber 23, and described screw rod 11 screws in the nuts 12, and described nut 12 is embedded on the inwall of described handle 13 by interior pedestal 16.Piston rod 17 is arranged between the front end and rear end of described inner chamber 23, and is fixed on the piston seat 15, and described piston rod 17 can move back and forth in inner chamber 23.Described piston seat 15 is connected with described screw rod 11, described nut 12 by push rod Connection Block 14.Described screw rod 11, nut 12 match, and rotate quantitative bar 1 by described fine setting and are rotated in axial generation thrust, drive piston seat 15 and piston rod 17 motions.
Described piston seat 15 belows are provided with back-moving spring 7, zero-bit slide block 8 and excessive extrusion back-moving spring 9, and described back-moving spring 7 upwards has pressure all the time, eliminates axial rigging error; Described excessive extrusion back-moving spring 9 is used for being forced out and external force when disappearing when piston seat 15, utilizes elastic force by described zero-bit slide block 8 described piston seat 15 to be resetted.Described excessive extrusion back-moving spring 9 lower ends also are provided with pressure cover 10, are used for fixing the lower end of described excessive extrusion back-moving spring 9.
The described double handle 13 of doing shell is provided with fixedly display scale mirror 2, position relative with described fixedly display scale mirror 2 positions in described inner chamber 23 is provided with slip microdial piece 6, and the motion of described piston seat 15 and piston rod 17 drives described slip microdial piece 6 and is synchronized with the movement.Described slip microdial piece 6 also is provided with and is attached thereto the vernier knob 5 that connects and is connected slide block 3, the lower end of described vernier knob 5 is provided with fine setting spring 4, is used to regulate zero graduation on the described slip microdial piece 6 and the zero graduation on the described fixedly display scale mirror 2 and aligns.
Described imbibition bar 20 is connected with the front end of described inner chamber 23, and the position that imbibition nozzle is applied mechanically in the lower end of described imbibition bar 20 is provided with O RunddichtringO 22.The described distance rod 21 that is used with described imbibition bar 20 that is sleeved on the described imbibition bar 20 is used for imbibition nozzle is taken off from described imbibition bar 20.
Described fixedly display scale mirror 2 each minimum scale lattice representative move the long-pending 5.0ul of liquid, and described slip microdial piece 6 each minimum scale lattice representative move the long-pending 0.25ul of liquid, specifically see also shown in Figure 2.Certainly, also can be arranged to other volume number, it is long-pending more little that 6 each the minimum scale lattice representative of described slip microdial piece move liquid, and it is high more to represent described pipettor to move the liquid certainty of measurement.
Before the described pipettor of use moves liquid, put imbibition nozzle in the lower end of described imbibition bar 20.Operation when moving liquid is as follows:
Step 1, check whether zero graduation on the described slip microdial piece 6 and the zero graduation on the described fixedly display scale mirror 2 align, as not aligning, then I rotate described vernier knob 5 with screwdriver, zero graduation on the described slip microdial piece 6 and the zero graduation on the described fixedly display scale mirror 2 are aligned, if align, then directly carry out step 2.
Step 2, rotate described fine setting and rotate quantitative bar 1 land in the position, measured point, it is adjusted to the position for the treatment of suction liquid value, again imbibition nozzle is invaded and moved 2 ~ 3mm place below the liquid levels, slowly loosen described fine setting again and rotate quantitative bar 1, make it to reset, wait was taken out described pipettor after 2 ~ 3 seconds from liquid, just finished the imbibition process one time.
Step 3 moves to imbibition nozzle on the application of sample chamber wall, slowly rotates described fine setting and rotates quantitative bar 1, until treating that suction liquid value is zero, loosens described fine setting again and rotates quantitative bar 1, makes it to reset, and has just finished the pipetting process one time.
After finishing using, press described handle 13, described distance rod 21 is moved downward, the removal imbibition nozzle is decontroled described handle 13 then, makes it to reset.
Implement the accurate fine-tuning pipettor that the utility model embodiment provides, have following beneficial effect:
1, it moves liquid measure and is determined in the distance that the pipettor inner chamber moves by the piston rod of a no-float.Utilize the principle of air displacement, in pipettor, make to decide Cheng Yundong, produce negative pressure, suck quantitative liquid by piston rod.The parts of instrument itself are less, and are simple in structure, and it moves the liquid capacity and can show clearly in the fixedly display scale mirror of pipettor and slip microdial piece, can regulate and reach required capacity by the quantitative bar of manual adjustments fine setting rotation again.In range 0.5 ~ 10ul, theoretical certainty of measurement can reach 0.025ul, and available accuracy can reach 0.05ul.
2, be provided with vernier knob and the fine setting spring that is connected with described slip microdial piece, realized fine setting check and correction datum mark, eliminated the accumulated error that assembling, manufacturing etc. produce from structure.Simultaneously, also the check and correction datum mark be can finely tune, certainty of measurement and service life increased substantially the accumulated error that long-term use produces.
3, sealing ring fells and transports polytetrafluoroethylmaterial material, and the dynamic pressure sealing is to the equilibrium of piston rod radial pressure.
Above disclosed only is a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (8)
1. fine-tuning pipettor of precision, comprise imbibition bar (20), the double handle (13) of doing shell, fine setting rotation quantitative bar (1), inner chamber (23) and the piston rod (17) that places described inner chamber (23), it is characterized in that: also comprise the fixedly display scale mirror (2) that places on the described double handle (13) of doing shell, the position relative with described fixedly display scale mirror (2) position at described inner chamber (23) is provided with slip microdial piece (6), and described slip microdial piece (6) rotates quantitative bar (1) with described fine setting and described piston rod (17) is synchronized with the movement.
2. the fine-tuning pipettor of precision as claimed in claim 1, it is characterized in that: also comprise the vernier knob (5) that is connected with described slip microdial piece (6), the lower end of described vernier knob (5) is provided with fine setting spring (4), is used to regulate zero graduation on the described slip microdial piece (6) and the zero graduation on the described fixedly display scale mirror (2) and aligns.
3. the fine-tuning pipettor of precision as claimed in claim 2, it is characterized in that: also comprise with described fine setting and rotate screw rod (11), the nut (12) that quantitative bar (1) matches and uses, described screw rod (11), nut (12) link to each other with piston seat (15) by push rod Connection Block (14), and described piston rod (17) places on the described piston seat (15).
4. the fine-tuning pipettor of precision as claimed in claim 3 is characterized in that: described piston seat (15) below is provided with back-moving spring (7) and excessive extrusion back-moving spring (9).
5. the fine-tuning pipettor of precision as claimed in claim 2 is characterized in that: also comprise the distance rod (21) that is used with described imbibition bar (20) that is sleeved on the described imbibition bar (20), be used for imbibition nozzle is taken off from described imbibition bar (20).
6. the fine-tuning pipettor of precision as claimed in claim 2 is characterized in that: adopt teflin ring (18) and O RunddichtringO (19) to carry out seal isolation between inner chamber 23 front ends of described pipettor and the rear end.
7. the fine-tuning pipettor of precision as claimed in claim 2 is characterized in that: the position that imbibition nozzle is applied mechanically in the lower end of described imbibition bar (20) is provided with O RunddichtringO (22).
8. the fine-tuning pipettor of precision as claimed in claim 2, it is characterized in that: each minimum scale lattice representative of described fixedly display scale mirror (2) moves the long-pending 5.0ul of liquid, and each minimum scale lattice representative of described slip microdial piece (6) moves the long-pending 0.25ul of liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201035828U CN202015624U (en) | 2011-04-11 | 2011-04-11 | Accuracy fine-tunable pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201035828U CN202015624U (en) | 2011-04-11 | 2011-04-11 | Accuracy fine-tunable pipettor |
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| Publication Number | Publication Date |
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| CN202015624U true CN202015624U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201035828U Expired - Lifetime CN202015624U (en) | 2011-04-11 | 2011-04-11 | Accuracy fine-tunable pipettor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179269A (en) * | 2011-04-11 | 2011-09-14 | 深圳市博卡生物技术有限公司 | Precision finely adjustable liquid transfer device |
| CN103389366A (en) * | 2012-05-09 | 2013-11-13 | 深圳中科强华科技有限公司 | Sampling tube holding device and sampling tube replacement method |
| CN106622418A (en) * | 2017-01-31 | 2017-05-10 | 佛山市顺德区罗恩科学仪器有限公司 | Pipette pipetting parameter adjustment operation method |
| CN112816257A (en) * | 2020-12-14 | 2021-05-18 | 武汉光谷航天三江激光产业技术研究院有限公司 | Micro liquid transfer device and method for precisely transferring alkali metal elements |
-
2011
- 2011-04-11 CN CN2011201035828U patent/CN202015624U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179269A (en) * | 2011-04-11 | 2011-09-14 | 深圳市博卡生物技术有限公司 | Precision finely adjustable liquid transfer device |
| CN103389366A (en) * | 2012-05-09 | 2013-11-13 | 深圳中科强华科技有限公司 | Sampling tube holding device and sampling tube replacement method |
| CN106622418A (en) * | 2017-01-31 | 2017-05-10 | 佛山市顺德区罗恩科学仪器有限公司 | Pipette pipetting parameter adjustment operation method |
| CN106622418B (en) * | 2017-01-31 | 2019-02-05 | 佛山市顺德区罗恩科学仪器有限公司 | Pipettor liquid relief parameter regulation operating method |
| CN112816257A (en) * | 2020-12-14 | 2021-05-18 | 武汉光谷航天三江激光产业技术研究院有限公司 | Micro liquid transfer device and method for precisely transferring alkali metal elements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20130424 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20130424 |
|
| RGAV | Abandon patent right to avoid regrant |