CN209076702U - A kind of pipettor switching suction nozzle - Google Patents
A kind of pipettor switching suction nozzle Download PDFInfo
- Publication number
- CN209076702U CN209076702U CN201821437736.5U CN201821437736U CN209076702U CN 209076702 U CN209076702 U CN 209076702U CN 201821437736 U CN201821437736 U CN 201821437736U CN 209076702 U CN209076702 U CN 209076702U
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- CN
- China
- Prior art keywords
- suction nozzle
- pipettor
- variable diameter
- screw thread
- soup stick
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Abstract
The utility model is suitable for chemical device technical field, provides a kind of pipettor switching suction nozzle, including pipettor ontology, soup stick and variable diameter suction nozzle, the soup stick are located at pipettor ontology lower end, and the variable diameter suction nozzle connects the soup stick by elastic lock；The elastic lock includes convex buckle and recessed button, and the convex buckle is in inverted trapezoidal, and the convex buckle is equipped with inboard groove, and the recessed button edge is equipped with the boss to match with the groove；The variable diameter suction nozzle includes several connecting tubes interconnected, is connected through a screw thread between the adjacent connecting tube, and the screw thread is tapered thread, and is socketed with elastic sealing gasket on the screw thread.Whereby, the utility model is by being provided with the variable diameter suction nozzle that multiple connecting tubes form in pipettor ontology lower end, and variable diameter suction nozzle is connected into pipettor ontology by elastic lock, the length or suction inlet diameter for changing the hair washing of pipettor ontology are realized with this, achieve the purpose that preferably to draw sample liquid with this.
Description
Technical field
The utility model relates to chemical device technical field more particularly to a kind of pipettor switching suction nozzles.
Background technique
Pipettor is a kind of low capacity liquid transfer device, is had widely in the laboratory of big-and-middle universities and colleges, scientific research institutions
Using being also widely used in environmental protection, occupational health, public health, hospital, animals and plants research institute.
Existing pipettor is generally divided into gas piston formula pipettor and external piston type pipettor, with external piston type liquid relief
For device, this pipettor is using external piston, and inside suction nozzle, suction nozzle is directly contacted with liquid plunger designs, piston
Air section is equipped between liquid.In use, generally pipettor lower end is submerged below the liquid for needing to measure, is utilized
The liquid of needs is slowly injected into pipettor by vacuum adsorption principle.The suction nozzle of pipettor lower end be typically of size of it is fixed, and
But size is different for the size of vial of splendid attire liquid, and fluid to be measured density is not also identical.When need by different test liquid into
When row pipetting, because the openings of sizes of collecting bottle, highly there is larger difference, suction nozzle can not come into full contact with fluid to be measured
And cause to take liquid difficult, meanwhile, when removing to draw the biggish fluid to be measured of density using lesser adsorption head, drawing can be extremely tired
It is difficult.Suction nozzle in use for some time, needs to clean, if later period cleaning can be very inconvenient using integrally formed suction nozzle.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Utility model content
For above-mentioned defect, the purpose of this utility model is to provide a kind of pipettor switching suction nozzles, by moving
Liquid device ontology lower end is provided with the variable diameter suction nozzle of multiple connecting tube compositions, and variable diameter suction nozzle is connected pipettor by elastic lock
Ontology is realized the length or suction inlet diameter for changing the hair washing of pipettor ontology with this, is achieved the purpose that preferably to draw sample liquid with this.
To achieve the goals above, the utility model provides a kind of pipettor switching suction nozzle, including pipettor ontology, soup stick
With variable diameter suction nozzle, the soup stick is located at pipettor ontology lower end, and the variable diameter suction nozzle connects the suction by elastic lock
Bar；The elastic lock includes convex buckle and recessed button, and the convex buckle is in inverted trapezoidal, and the convex buckle is equipped with inboard groove, and described
Recessed button edge is equipped with the boss to match with the groove；The variable diameter suction nozzle includes several connecting tubes interconnected, phase
It is connected through a screw thread between the adjacent connecting tube, the screw thread is tapered thread, and is socketed with elastic packing on the screw thread
Pad.
Pipettor switching suction nozzle according to the present utility model, the gasket seal middle part is equipped with seal protection ring, described close
Envelope protection ring is formed by ceramic fibre tape lamination.
Pipettor switching suction nozzle according to the present utility model, pipettor ontology upper end are equipped with lifting column, and middle part is equipped with
Volume display window, side are equipped with block arc.
Pipettor switching suction nozzle according to the present utility model, the lifting column are equipped with fingerstall, and the fingerstall passes through traction
Line connects the lifting column.
Pipettor switching suction nozzle according to the present utility model, the connecting tube quantity are 2-3, and the connecting tube is transparent,
Material is polytetrafluoroethylene (PTFE) or synthetic glass.
Pipettor switching suction nozzle according to the present utility model, the variable diameter suction nozzle taper with a narrow upper and lower width, and taper is
1-3°。
The utility model provides a kind of pipettor switching suction nozzle, including pipettor ontology, soup stick and variable diameter suction nozzle, the suction
Bar is located at pipettor ontology lower end, and the variable diameter suction nozzle connects the soup stick by elastic lock；Pipettor ontology is in work
During work, is contacted by variable diameter suction nozzle with fluid to be measured and soup stick is utilized to complete imbibition operation, meanwhile, using elastic lock,
Facilitate the dismounting for realizing variable diameter suction nozzle and soup stick, replace and clean convenient for the later period, elastic lock can also prevent variable diameter suction nozzle
It falls, reduces pollution.The variable diameter suction nozzle includes several connecting tubes interconnected, passes through screw thread between the adjacent connecting tube
Connection, the screw thread is tapered thread, and is socketed with elastic sealing gasket on the screw thread.Multiple connecting tubes are mutual by screw thread
Connection forms the longer variable diameter suction nozzle of length, realizes the absorption to fluid to be measured in small bore bottle with this, since screw thread is taper
Screw thread, meanwhile, it is additionally provided with elastic sealing gasket in tapered thread, in this way in rotary course, air-tightness can be increased, improve and draw
Efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the decomposition and assembled state reference view of the variable diameter suction nozzle of the utility model；
Fig. 3 is the structural schematic diagram of the elastic lock of the utility model；
1- lifting column in the figure, 2- block arc, 3- pipettor ontology, 4- display window, 5- soup stick, 6- snap lock
Button, 7- connecting tube, 8- elastic sealing gasket, 9- variable diameter suction nozzle, 10- fingerstall, 11- tapered thread, the recessed button of 12-, 13- convex buckle, 14-
Groove, 15- boss.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail, it should be understood that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, Fig. 2, the utility model provides a kind of pipettor switching suction nozzle, including pipettor ontology 3,5 and of soup stick
Variable diameter suction nozzle 9, the soup stick 5 are located at 3 lower end of pipettor ontology, and the variable diameter suction nozzle 9 connects institute by elastic lock 6
State soup stick 5；Pipettor ontology 3 during the work time, is contacted with fluid to be measured by variable diameter suction nozzle 9 and soup stick 5 is utilized to complete to inhale
Liquid operation, meanwhile, using elastic lock 6, facilitate the dismounting for realizing variable diameter suction nozzle 9 and soup stick 5, replace and clean convenient for the later period,
Elastic lock 6 can also prevent falling for variable diameter suction nozzle 9, reduce pollution.The variable diameter suction nozzle 9 includes several companies interconnected
Adapter tube 7 is connected through a screw thread between the adjacent connecting tube 7, and the screw thread is tapered thread 11, and is socketed on the screw thread
Flexible gasket 8.Multiple connecting tubes 7 are connected with each other by screw thread, form the longer variable diameter suction nozzle 9 of length, are realized pair with this
The absorption of fluid to be measured in small bore bottle, since screw thread is tapered thread 11, meanwhile, elastic packing is additionally provided in tapered thread 11
Pad 8 can increase air-tightness in this way in rotary course, improve extraction efficiency.
Preferably, the seal protection ring made of ceramic fibre is equipped in the middle part of the gasket seal of the utility model, it is described
Seal protection ring is formed by ceramic fibre tape lamination.Seal protection ring made of ceramic fibre, stability with higher, even if
Fluid to be measured has certain corrosivity, can still guarantee air-tightness, and variable diameter suction nozzle 9 and soup stick 5 are general cylindrical, increase
Seal protection ring, can produce better seal effect.
In addition, 3 upper end of pipettor ontology of the utility model is equipped with lifting column 1, middle part is equipped with volume display window 4, side
Face is equipped with block arc 2.During the work time, the moving displacement that pipettor ontology 3 is limited by block arc 2, passes through change
1 height of lifting column, changes the air pressure in pipettor ontology 3, and then realize the absorption to fluid to be measured.
Further, the lifting column 1 of the utility model is equipped with fingerstall 10, and the fingerstall 10 passes through described in draught line connection
Lifting column 1.It should be normally to press lifting column 1 with thumb, still when squeezing out fluid to be measured from pipettor ontology 3
In actual use, when the test solution volume of absorption is larger, the thumb of user can not directly be pressed on lifting column 1,
And by fingerstall 10, it can directly be socketed on thumb, then be more convenient to squeeze out fluid to be measured.
Preferably, 7 quantity of connecting tube of the utility model is 2-3, and the connecting tube 7 is transparent, and material is polytetrafluoroethyl-ne
Alkene or synthetic glass.Polytetrafluoroethylene (PTFE) or glass have stronger stability, and acid-alkali-corrosive-resisting is more wide in chemical field application
General, cost is relatively low.
In order to reach superior technique effect, the taper with a narrow upper and lower width of variable diameter suction nozzle 9 of the utility model, and taper is
1-3°.From top to bottom, bore is sequentially reduced variable diameter suction nozzle 9, when needing the biggish fluid to be measured of adsorption density, removes part company
Adapter tube 7, i.e., the suction inlet diameter of changeable variable diameter suction nozzle 9, so as to improve the adsorption effect to the larger liquid of density.
Specific embodiment of the present utility model: in use, according to fluid to be measured bottleneck size, pass through multiple companies
Adapter tube 7 is connected with each other, and changes 9 length of variable diameter suction nozzle, realizes the absorption to fluid to be measured.Connecting tube 7 is equipped with tapered thread 11,
The characteristic that itself can be sealed using tapered thread 11 is increased air-tightness, is more convenient for drawing liquid.It is additionally provided in tapered thread 11
Elastic sealing gasket 8 can prevent rotation tension while increasing air-tightness.
When needing the fluid density drawn larger, when needing to change 5 suction nozzle diameter of soup stick, can directly by connecting tube 7 with
Soup stick 5 separates, and soup stick 5 and connecting tube 7 are mutually clamped by elastic lock 6, and 6 shape of elastic lock is generally trapezoidal, and material can
Preferentially to select hard synthetic plastic at when in use, when soup stick 5 mutually being abutted with connecting tube 7 and firmly being squeezed, hard is moulded
Slight deformation can occur for material, be now placed in elastic lock 6 under pressure, convex buckle 13 and the mutually clamping of recessed button 12, convex
Platform 15 contacts with each other with groove 14, and the connection of soup stick 5 Yu connecting tube 7 is realized with this, in order to increase air-tightness, generally in snap lock
Gasket seal is also equipped on button 6.When needing to dismount, directly soup stick 5 and connecting tube 7 are pulled using manpower.
In practical sampling process, part fluid to be measured density is larger, and has biggish viscosity, if using connecing
The variable diameter suction nozzle 9 of nearly pointed cone type, can be extremely laborious in suction process.And at this time if by the connection of the end of variable diameter suction nozzle 9
Pipe 7 is removed, and can increase the suction inlet diameter of variable diameter suction nozzle 9, the absorption to the biggish fluid to be measured of density may be implemented.Meanwhile
After the completion of use, variable diameter suction nozzle 9 can also be cleaned.
In conclusion the utility model provides a kind of pipettor switching suction nozzle, including pipettor ontology, soup stick and variable diameter are inhaled
Head, the soup stick are located at pipettor ontology lower end, and the variable diameter suction nozzle connects the soup stick by elastic lock；Pipettor
Ontology during the work time, is contacted with fluid to be measured by variable diameter suction nozzle and soup stick is utilized to complete imbibition operation, meanwhile, utilize bullet
Property lock, facilitate the dismounting for realizing variable diameter suction nozzle and soup stick, replace and clean convenient for the later period, elastic lock can also prevent variable diameter
Suction nozzle is fallen, and reduces pollution.The variable diameter suction nozzle includes several connecting tubes interconnected, is led between the adjacent connecting tube
Threaded connection is crossed, the screw thread is tapered thread, and is socketed with elastic sealing gasket on the screw thread.Multiple connecting tubes pass through spiral shell
Line is connected with each other, and is formed the longer variable diameter suction nozzle of length, the absorption to fluid to be measured in small bore bottle is realized with this, due to screw thread
For tapered thread, meanwhile, it is additionally provided with elastic sealing gasket in tapered thread, in this way in rotary course, air-tightness can be increased, mentioned
High extraction efficiency.
Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence
In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these according to the utility model
Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.
Claims (6)
- The suction nozzle 1. a kind of pipettor is transferred, which is characterized in that including pipettor ontology, soup stick and variable diameter suction nozzle, the soup stick position In pipettor ontology lower end, the variable diameter suction nozzle connects the soup stick by elastic lock；The elastic lock includes convex buckle and recessed button, and the convex buckle is trapezoidal, and groove, and the recessed button are equipped on the outside of the convex buckle Edge is equipped with the boss to match with the groove；The variable diameter suction nozzle includes several connecting tubes interconnected, is connected through a screw thread between the adjacent connecting tube, described Screw thread is tapered thread, and is socketed with elastic sealing gasket on the screw thread.
- The suction nozzle 2. pipettor according to claim 1 is transferred, which is characterized in that be equipped with sealing in the middle part of the gasket seal and protect Retaining ring, and the seal protection ring is formed by ceramic fibre tape lamination.
- The suction nozzle 3. pipettor according to claim 1 is transferred, which is characterized in that pipettor ontology upper end is equipped with lifting Column, middle part are equipped with volume display window, and side is equipped with block arc.
- The suction nozzle 4. pipettor according to claim 3 is transferred, which is characterized in that the lifting column is equipped with fingerstall, described Fingerstall connects the lifting column by draught line.
- The suction nozzle 5. pipettor according to claim 1 is transferred, which is characterized in that the connecting tube quantity is 2-3, described Connecting tube is transparent, and material is polytetrafluoroethylene (PTFE) or synthetic glass.
- The suction nozzle 6. pipettor according to claim 1 is transferred, which is characterized in that the variable diameter suction nozzle cone with a narrow upper and lower width Shape, and taper is 1-3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437736.5U CN209076702U (en) | 2018-09-04 | 2018-09-04 | A kind of pipettor switching suction nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437736.5U CN209076702U (en) | 2018-09-04 | 2018-09-04 | A kind of pipettor switching suction nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209076702U true CN209076702U (en) | 2019-07-09 |
Family
ID=67115769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821437736.5U Expired - Fee Related CN209076702U (en) | 2018-09-04 | 2018-09-04 | A kind of pipettor switching suction nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209076702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749225A (en) * | 2022-05-18 | 2022-07-15 | 霍尔斯特德(苏州)医疗科技有限公司 | Novel disposable suction head capable of preventing liquid from being stained |
-
2018
- 2018-09-04 CN CN201821437736.5U patent/CN209076702U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749225A (en) * | 2022-05-18 | 2022-07-15 | 霍尔斯特德(苏州)医疗科技有限公司 | Novel disposable suction head capable of preventing liquid from being stained |
| CN114749225B (en) * | 2022-05-18 | 2024-01-30 | 霍尔斯特德(苏州)医疗科技有限公司 | Novel disposable suction head for preventing liquid from being stained |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |