CN219701953U - Quantitative pipette - Google Patents
Quantitative pipette Download PDFInfo
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- CN219701953U CN219701953U CN202320930048.7U CN202320930048U CN219701953U CN 219701953 U CN219701953 U CN 219701953U CN 202320930048 U CN202320930048 U CN 202320930048U CN 219701953 U CN219701953 U CN 219701953U
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- pipette
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- volume
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- 239000007788 liquid Substances 0.000 claims abstract description 92
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000009825 accumulation Methods 0.000 claims description 6
- 241000521257 Hydrops Species 0.000 claims description 5
- 206010030113 Oedema Diseases 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 6
- 238000004448 titration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000004712 air sac Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model relates to a quantitative pipette, which belongs to the technical field of experimental tools and comprises a pipette body, wherein a liquid inlet is formed in the bottom end of the pipette body, a cavity is formed in the pipette body, an inner liquid pipe body is inserted in the cavity, a sleeve block is sleeved at the top of the inner liquid pipe body, an air bag ball is arranged at the top end of the sleeve block and is made of rubber materials, the air bag ball is communicated with the top of the sleeve block, a sealing piston is fixedly arranged at the bottom end of the inner liquid pipe body, the quantitative pipette can conveniently carry out suitability adjustment on the volume of the cavity in the pipette body through the inner liquid pipe body with an adjustable position, the pipette can quantitatively absorb the quantity of liquid required by the experiment, the suitability of the pipette is improved, meanwhile, the liquid can enter a liquid storage tank through the overflow channel after being absorbed into redundant liquid, the total liquid transfer volume of the cavity in the pipette body and the overflow channel is always ensured to be unchanged, and the accuracy of the liquid transfer is improved.
Description
Technical Field
The utility model relates to the technical field of experimental tools, in particular to a quantitative pipette.
Background
The pipette is a measuring instrument which is only used for measuring the volume of the solution discharged by the pipette, and is widely applied to laboratory and scientific research institutions or enterprises and institutions related to chemical industry, food and the like for experimental sampling.
The prior Chinese patent with the application number of CN202021813108.X discloses a quantitative pipette which comprises a quantitative glass tube and an air sac ball; the upper end and the lower end of the glass tube are pointed cone-shaped and respectively serve as a liquid inlet and a liquid outlet, and limiting plates are arranged below the upper part of the outer side of the glass tube; the inner lower end of the air bag ball is provided with an integrally formed connecting sleeve column, the inner side of the connecting sleeve column is provided with a cylindrical through hole from top to bottom, the height of the connecting sleeve column is higher than that of the inner lower end of the air bag ball, one side of the lower end of the connecting sleeve column is provided with a liquid discharge hole, and the upper end of the glass tube is sleeved in the connecting sleeve column from bottom to top. The utility model has simple and compact structure and convenient use. In the liquid transferring process, the operator is not required to hold the state of pressing the air bag ball by hand, so that convenience can be brought to the operation of the operator. When the liquid moves to a required position, an operator presses the air bag ball, and the upper end of the glass tube is higher than the lower end of the air bag ball, so that redundant liquid can not enter the glass tube any more, the purpose of accurate pipetting is achieved, and convenience is brought to the operation of the operator.
However, the quantitative pipette still can only quantitatively absorb the liquid quantity in the pipette volume in practical application, when quantitative pipetting is carried out, if the required liquid quantity is different from the volume in the pipette, the quantitative pipette cannot accurately quantify the liquid at one time as required, the excessive liquid is required to be dripped out in a titration mode, and then titration scales in the pipette are repeatedly observed, so that the steps are complicated.
Disclosure of Invention
The utility model aims at the problems in the prior art, and provides a quantitative pipette which is realized by the following technical scheme:
the utility model provides a quantitative pipette, includes the pipette body, pipette body bottom is provided with the inlet, the cavity has been seted up in the pipette body, and the cavity interpolation is equipped with interior liquid body, interior liquid body top cover is equipped with the cover piece, the cover piece top is provided with the gasbag ball, the gasbag ball comprises rubber materials, gasbag ball and cover piece top intercommunication each other, interior liquid body bottom fixed mounting has sealed piston, interior liquid body and sealed piston are interior center department has seted up a run-through type overflow liquid passageway, the annular hydrops groove that the cross-section is the concave font is provided with to the bottom in the cover piece.
Preferably, the outer wall of the inner liquid pipe body and the inner wall of the cavity are provided with butt threads, and the inner liquid pipe body is in threaded connection with the pipette body.
Preferably, the top end of the inner liquid pipe body is higher than the top surface of the Yu Ji liquid groove.
Preferably, the overflow channel communicates between the pipette body and the inside of the sleeve block, and the volume of the overflow channel is counted in the volume of the pipette body.
Preferably, a liquid discharge hole is formed in one side of the bottom surface of the liquid accumulation groove, and scales are carved on the outer side surface of the pipette body from top to bottom.
In summary, the beneficial technical effects of the utility model are as follows:
this ration pipette carries out the suitability through setting up the interior liquid body that can adjust the position can be convenient to the volume of the internal cavity of pipette, make the pipette can quantitatively absorb the required liquid quantity of this experiment, improve the suitability that makes this pipette, titrate the mode with unnecessary liquid drip out, then observe the titration scale in the pipette repeatedly, simultaneously through set up the overflow passageway in the interior liquid body and can make liquid enter into the hydrops inslot through the overflow passageway after inhaling unnecessary liquid, ensure the volume of the internal cavity of pipette and the total volume of pipetting in the overflow passageway is invariable all the time, the accuracy of pipetting is improved, the pipetting degree of difficulty has also been reduced simultaneously, pipetting efficiency has been improved.
Drawings
Fig. 1 is a schematic diagram for showing the overall structure of the present utility model.
Fig. 2 is a schematic diagram for showing the internal structure of the present utility model.
Reference numerals: 1. a pipette body; 2. a liquid inlet; 3. an inner liquid pipe body; 4. butt-joint threads; 5. sleeving blocks; 6. an air bag ball; 7. a scale; 8. a liquid collecting tank; 9. an overflow channel; 10. a sealing piston; 11. and a liquid discharge hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the present utility model provides a technical solution: including the pipette body 1, pipette body 1 bottom is provided with inlet 2, set up the cavity in the pipette body 1, the cavity interpolation is equipped with interior liquid body 3, interior liquid body 3 top cover is equipped with cover piece 5, cover piece 5 top is provided with gasbag ball 6, gasbag ball 6 comprises rubber materials, gasbag ball 6 communicates with cover piece 5 top each other, interior liquid body 3 bottom fixed mounting has sealed piston 10, interior liquid body 3 and sealed piston 10 interior center department has seted up one and has run through type overflow channel 9, be provided with the annular hydrops groove 8 that the transversal concave font of personally submitting in the cover piece 5 bottom.
In this embodiment, the outer wall of the inner liquid pipe body 3 and the inner wall of the cavity are both provided with the butt-joint screw thread 4, the inner liquid pipe body 3 is in threaded connection with the pipette body 1, the overflow liquid channel 9 is communicated with the inside of the pipette body 1 and the sleeve block 5, the volume of the overflow liquid channel 9 is counted in the volume of the pipette body 1, a little excessive liquid is sucked into the pipette body 1, and the excessive liquid flows out from the top end of the overflow liquid channel 9 and enters the liquid accumulation tank 8 arranged in the bottom of the sleeve block 5.
Further, a liquid discharge hole 11 is formed in one side of the bottom surface of the liquid accumulation groove 8, scales 7 are engraved on the outer side surface of the pipette body 1 from top to bottom, the liquid volume can be visually observed, and meanwhile, liquid accumulation in the liquid accumulation groove 8 can be discharged through the liquid discharge hole 11.
When the pipette body 1 is used, the space in the pipette body 1 can be adjusted according to the liquid quantity required by the experiment, and the method specifically comprises the following steps: the sleeve block 5 is rotated, the sleeve block 5 drives the inner liquid pipe body 3 to rotate, the inner liquid pipe body 3 is in threaded connection with the inside of the pipette body 1, so that the inner liquid pipe body 3 is lifted and lowered in the pipette body 1 along with the inner liquid pipe body 3, the volume of the cavity in the pipette body 1 is changed, the overflow liquid channel 9 is formed in the middle of the inner liquid pipe body 3, the volume of the overflow liquid channel 9 is fixed, the volume of the changed cavity in the pipette body 1 and the volume of the overflow liquid channel 9 are matched with the required volume amount of the experiment, after the matching, the air suction balloon ball 6 is manually pinched, the liquid inlet 2 is inserted into liquid to be removed, the air balloon ball 6 is slowly loosened, the slightly excessive liquid is sucked into the pipette body 1, the excessive liquid flows out from the top end of the overflow liquid channel 9 and enters the liquid storage tank 8 arranged in the sleeve block 5, then the pipette body 1 is moved to an experiment area, and then the air balloon ball 6 is pressed, and the liquid in the pipette body 1 and the overflow liquid channel 9 is extruded.
In summary, this ration pipette carries out the suitability regulation through setting up the interior liquid body 3 of adjustable position to the volume of cavity in the pipette body 1 that can be convenient, make the pipette can quantitatively absorb the required liquid quantity of this experiment, improve the suitability that makes this pipette, simultaneously through setting up in interior liquid body 3 overflow channel 9 can make liquid enter into the hydrops inslot 8 through overflow channel 9 after inhaling unnecessary liquid, ensure the volume of cavity in the pipette body 1 all the time plus the total volume of pipetting in overflow channel 9 is invariable, improve the accuracy of pipetting, the while has also reduced the pipetting degree of difficulty, and pipetting efficiency has been improved.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Claims (5)
1. The utility model provides a quantitative pipette, includes pipette body (1), its characterized in that, pipette body (1) bottom is provided with inlet (2), set up cavity in pipette body (1), cavity interpolation is equipped with interior liquid body (3), interior liquid body (3) top cover is equipped with cover piece (5), cover piece (5) top is provided with gasbag ball (6), gasbag ball (6) are by rubber materials constitution, gasbag ball (6) communicate each other with cover piece (5) top, interior liquid body (3) bottom fixed mounting has sealed piston (10), interior liquid body (3) and sealed piston (10) interior center department has seted up one and has run through type overflow liquid passageway (9), be provided with annular hydrops groove (8) that the cross section is concave font in cover piece (5).
2. A quantitative pipette according to claim 1, wherein the outer wall of the inner liquid tube (3) and the inner wall of the cavity are provided with butt threads (4), and the inner liquid tube (3) is in threaded connection with the pipette body (1).
3. A dosing pipette according to claim 1, characterized in that the top of the inner liquid tube (3) is higher than the top of the Yu Ji liquid bath (8).
4. A dosing pipette according to claim 1, characterized in that the overflow channel (9) communicates between the pipette body (1) and the interior of the block (5), and that the volume of the overflow channel (9) is counted in the volume of the pipette body (1).
5. A quantitative pipette according to claim 1, wherein a drain hole (11) is formed on one side of the bottom surface of the liquid accumulation groove (8), and scales (7) are engraved on the outer side surface of the pipette body (1) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930048.7U CN219701953U (en) | 2023-04-23 | 2023-04-23 | Quantitative pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930048.7U CN219701953U (en) | 2023-04-23 | 2023-04-23 | Quantitative pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219701953U true CN219701953U (en) | 2023-09-19 |
Family
ID=87981311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320930048.7U Active CN219701953U (en) | 2023-04-23 | 2023-04-23 | Quantitative pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219701953U (en) |
-
2023
- 2023-04-23 CN CN202320930048.7U patent/CN219701953U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |