CN220027067U - Pipette for laboratory - Google Patents
Pipette for laboratory Download PDFInfo
- Publication number
- CN220027067U CN220027067U CN202321599074.2U CN202321599074U CN220027067U CN 220027067 U CN220027067 U CN 220027067U CN 202321599074 U CN202321599074 U CN 202321599074U CN 220027067 U CN220027067 U CN 220027067U
- Authority
- CN
- China
- Prior art keywords
- pipette
- air bag
- elastic air
- circulating pipe
- liquid
- 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.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 72
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000010030 laminating Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 26
- 238000005213 imbibition Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The utility model relates to the technical field of laboratory accessories, in particular to a pipette for a laboratory. The technical scheme includes that the liquid storage device comprises a liquid transfer tube, an elastic air bag is arranged above the liquid transfer tube and is communicated with the inside of the liquid transfer tube, a liquid storage circulating pipe is arranged between the liquid transfer tube and the elastic air bag, the bottom end of the liquid storage circulating pipe is communicated with the inner side of the top of the liquid transfer tube, the top end of the liquid storage circulating pipe is connected with the outer side of the elastic air bag in a bonding and sealing mode and is communicated with the inside of the elastic air bag, the position, connected with the liquid storage circulating pipe, of the top of the liquid transfer tube is located on the outer surface of the liquid storage circulating pipe, and the top surface of the fixed connecting rod is fixedly connected with the bottom surface of the elastic air bag in a bonding mode; according to the utility model, the length of the pipette is increased through the liquid storage circulating pipe, the volume of the solvent reserved in the pipette is increased, the convenience of the elastic air bag in operation and use is improved, and meanwhile, the solvent liquid can be effectively prevented from entering the inner side of the elastic air bag, and the convenience of one-hand operation is improved.
Description
Technical Field
The utility model relates to the technical field of laboratory accessories, in particular to a pipette for a laboratory.
Background
The pipette is a common measuring device used for transferring a certain amount of solvent liquid in a laboratory, in the operation process, an elastic air bag is pinched by fingers, gas in the air bag is discharged, the nozzle at the bottom of the pipette is driven to suck the solvent liquid through the internal pressure of the air bag, liquid taking is completed, and in the operation process, excessive suction of the solvent liquid and the entering of the inner side of the air bag can occur due to the excessive pressure in the elastic air bag, so that the solvent liquid is polluted.
The patent application number 202211298439.8 discloses a pipette imbibition and liquid discharge flow control device, which is characterized in that a second pipeline vertically connected with the middle part of the pipette and a flow control part arranged in the middle part of the pipeline are additionally arranged, so that the imbibition amount and the imbibition and liquid discharge speed can be freely controlled, the problem of high imbibition operation difficulty is solved, and meanwhile, the solvent pollution caused by high pressure of an elastic air bag when a solvent enters the inner side of the air bag can be completely avoided.
But in its actual operation use, to the operation of flow control part, then need use both hands simultaneous control elasticity gasbag and the inside spheroid of flow control part, just can use the pipette to the solvent liquid suction, and this in-process is to adopting both hands operation to occupy both hands, can influence the extraction operation of pipette and solution, can cause the solution bottle to be unable to support and drop with the pipette touching if appear the solution bottle, causes the problem of experimental error.
Thus, there is a need for a laboratory pipette that addresses the above-described problems.
Disclosure of Invention
The utility model aims at solving the problems in the background art, and provides a laboratory pipette which is used for solving the problem that the use of the pipette cannot be completely operated and controlled by one hand.
The technical scheme of the utility model is as follows: the utility model provides a pipette that laboratory was used, includes the pipette, the pipette top is equipped with elasticity gasbag and inside intercommunication, be equipped with between pipette and the elasticity gasbag and deposit the liquid circulating pipe, it is inboard to deposit liquid circulating pipe bottom intercommunication pipette top, deposit liquid circulating pipe top laminating sealing connection in the elasticity gasbag outside and with the inside intercommunication of elasticity gasbag, the position that the pipette top is connected to deposit the liquid circulating pipe is located and deposits liquid circulating pipe external surface fixation and have fixed connection pole, fixed connection pole top surface laminating fixed connection is in elasticity gasbag bottom surface.
Optionally, the pipette bottom is fixed with a conical pipette tip communicated with the inner side of the pipette.
Optionally, the position that the fixed connection pole top surface is connected with the elastic air bag is fixed with first laminating piece, first laminating piece top surface is equipped with the glue solution and bonds in the elastic air bag surface.
Optionally, a second attaching piece is fixed at the position where the liquid storage circulating pipe is connected with the elastic air bag, and the second attaching piece is attached and sealed on the outer surface of the elastic air bag.
Optionally, a through hole is formed in the top of the elastic air bag, and a protection ring is arranged on the inner side of the through hole.
Optionally, annular seal draw-in groove that corresponds with elasticity gasbag inner wall thickness is seted up to the guard ring surface, annular seal draw-in groove laminating seal is fixed in elasticity gasbag outer wall.
Optionally, the protection ring top surface is equipped with check valve and the inboard intercommunication of elasticity gasbag, the one end that the check valve is connected the protection ring is fixed with the screw thread dwang screw thread seal and connects soon in the protection ring inboard.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the utility model, the annular spiral surrounding liquid storage circulating pipe is communicated with the top of the pipette, and the liquid storage circulating pipe is communicated with the elastic air bag, so that the length of the pipette is increased through the liquid storage circulating pipe in the operation and use process of the elastic air bag, the volume of a residual solvent of the pipette is increased, the convenience of the elastic air bag in operation and use is improved, and meanwhile, the solvent liquid can be effectively prevented from entering the inner side of the elastic air bag, and the convenience of one-hand operation is improved.
Drawings
FIG. 1 shows a schematic view of a laboratory pipette according to the utility model;
FIG. 2 is a schematic view of the middle section structure of FIG. 1;
FIG. 3 is an enlarged exploded view of the structure of FIG. 2;
fig. 4 is an enlarged exploded view of the top structure of the elastic balloon of fig. 3.
Reference numerals: 1. a pipette; 2. an elastic air bag; 3. a liquid storage circulation pipe; 4. fixing the connecting rod; 5. a conical liquid suction nozzle; 6. a first bonding sheet; 7. a second lamination sheet; 8. a through hole; 9. a guard ring; 10. an annular sealing clamping groove; 11. a one-way valve; 12. a threaded screw rod.
Description of the embodiments
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 1-4, the laboratory pipette provided by the utility model comprises a pipette 1, wherein an elastic air bag 2 is arranged above the pipette 1 and is communicated with the inside of the pipette 1, a liquid storage circulating pipe 3 is arranged between the pipette 1 and the elastic air bag 2, the bottom end of the liquid storage circulating pipe 3 is communicated with the inner side of the top of the pipette 1, the top end of the liquid storage circulating pipe 3 is attached and hermetically connected to the outer side of the elastic air bag 2 and is communicated with the inside of the elastic air bag 2, the position of the top of the pipette 1 connected with the liquid storage circulating pipe 3 is positioned on the outer surface of the liquid storage circulating pipe 3, a fixed connecting rod 4 is fixedly connected with the bottom surface of the elastic air bag 2 in an attached and fixed mode;
the use flow is as follows: extruding the elastic air bag 2, conveying air in the elastic air bag 2 into the liquid storage circulating pipe 3, discharging the air in the liquid storage circulating pipe 3 and the pipette 1, then enabling a conical liquid suction nozzle 5 at one end of the pipette 1 connected with the extruded elastic air bag 2 to penetrate into the inner side of a solvent bottle, absorbing the solvent, applying suction force to the liquid storage circulating pipe 3 and the pipette 1 along with the elastic air bag 2, sucking the solvent into the inner side of the pipette 1, and then moving the pipette 1, so that the absorbed solvent can be discharged to a required position through the extruded elastic air bag 2;
in the utility model, no matter how the elastic air bag 2 is extruded, the solvent liquid absorbed by the pipette 1 does not enter the inner side of the elastic air bag 2, so that the solvent liquid is polluted, when the solvent liquid is absorbed too much, the solvent liquid enters the inside of the liquid storage circulating pipe 3, and along with the gradual reduction of the pressure of the elastic air bag 2, the solvent liquid is communicated with the pipette 1 and remains in the liquid storage circulating pipe 3, and the solvent liquid is accumulated and remains, so that the operation and the use of the elastic air bag 2 by an experimenter are facilitated;
it should be noted that: the whole internal volume of the elastic air bag 2 is smaller than that of the liquid storage circulating pipe 3, so that the air in the elastic air bag 2 is completely discharged in time, the condition that solvent liquid enters the inner side of the elastic air bag 2 is still avoided, and the convenience of the elastic air bag 2 and the pipette 1 in absorbing and using the solvent liquid is ensured;
it should be noted that: the liquid storage circulating pipe 3 can be made of various experimental solvent materials.
Example two
As shown in fig. 1-4, based on the embodiment 1, the bottom end of the pipette 1 is fixed with a conical pipette nozzle 5 which is communicated with the inner side of the pipette 1. The position of the top surface of the fixed connecting rod 4 connected with the elastic air bag 2 is fixed with a first attaching piece 6, and the top surface of the first attaching piece 6 is provided with glue solution which is adhered to the outer surface of the elastic air bag 2.
The position of the liquid storage circulating pipe 3 connected with the elastic air bag 2 is fixedly provided with a second attaching piece 7, the second attaching piece 7 is attached and sealed on the outer surface of the elastic air bag 2, a through hole 8 is formed in the top of the elastic air bag 2, a protecting ring 9 is arranged on the inner side of the through hole 8, an annular sealing clamping groove 10 corresponding to the thickness of the inner wall of the elastic air bag 2 is formed in the outer surface of the protecting ring 9, the annular sealing clamping groove 10 is attached and sealed and fixed on the outer wall of the elastic air bag 2, the top surface of the protecting ring 9 is provided with a one-way valve 11 communicated with the inner side of the elastic air bag 2, and one end of the one-way valve 11 connected with the protecting ring 9 is fixedly provided with a threaded rotary rod 12 in a threaded sealing and screwing mode on the inner side of the protecting ring 9.
In this embodiment, the tapered pipette tip 5 at the bottom of the pipette 1 has a smaller pipette tip, which can facilitate deep pipetting of the pipette 1.
The design of the first attaching piece 6 and the second attaching piece 7 can enable the elastic air bag 2 to be replaced by detaching the liquid storage circulating pipe 3 and the fixed connecting rod 4 when the elastic air bag 2 is damaged, and therefore the practicability and the utilization rate of the device are improved.
The through holes 8 at the top of the elastic air bag 2 are arranged, so that the control content in the elastic air bag 2 can be increased or reduced, and the convenience of liquid adsorption and delivery in the liquid storage circulation pipe 3 and the pipette 1 is improved.
The design of the protection ring 9 can be convenient to operate when the through hole 8 is blocked manually, and meanwhile, the damage to the position of the through hole 8 caused by direct contact with the through hole 8 is avoided.
The annular sealing clamping groove 10 increases the connection strength and the tightness of the protection ring 9 and the through hole 8, and prolongs the service life of the position of the through hole 8 of the elastic air bag 2.
The design of check valve 11 and screw thread dwang 12 can be under the specific environment to check valve 11 dismouting use, can be with check valve 11 when through-hole 8 needs the complete jam simultaneously, changes the sealing plug, improves the suitability of device.
It should be noted that: after the solvent liquid is sucked into the elastic air bag 2, the air inside the elastic air bag 2 can be discharged to the outside of the through hole 8, so that the liquid inside the liquid storage circulating pipe 3 can be reserved, and the solvent liquid inside the liquid storage circulating pipe 3 can be discharged by absorbing the external air through the through hole 8.
The check valve 11 can reserve and discharge the solvent liquid in the liquid storage circulation pipe 3 by changing the valve body in different communication directions.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (7)
1. Laboratory pipette, including pipette (1), pipette (1) top is equipped with elasticity gasbag (2) and its inside intercommunication, its characterized in that still includes: locate liquid circulating pipe (3) of depositing between pipette (1) with elastic balloon (2), liquid circulating pipe (3) bottom intercommunication pipette (1) top inboard, liquid circulating pipe (3) top laminating sealing connection is in elastic balloon (2) outside and with elastic balloon (2) inside intercommunication, the position that liquid circulating pipe (3) was deposited in pipette (1) top connection is located liquid circulating pipe (3) surface fixation and has fixed connection pole (4), fixed connection pole (4) top surface laminating fixed connection is in elastic balloon (2) bottom surface.
2. Laboratory pipette according to claim 1, characterized in that the bottom end of the pipette (1) is fixed with a conical pipette nozzle (5) communicating with the inside of the pipette (1).
3. Laboratory pipette according to claim 1, wherein the position of the top surface of the fixed connecting rod (4) connected with the elastic air bag (2) is fixed with a first attaching piece (6), and the top surface of the first attaching piece (6) is provided with glue solution which is adhered to the outer surface of the elastic air bag (2).
4. Laboratory pipette according to claim 1, wherein a second bonding sheet (7) is fixed at the position of the liquid storage circulation tube (3) connected with the elastic air bag (2), and the second bonding sheet (7) is bonded and sealed on the outer surface of the elastic air bag (2).
5. Laboratory pipette according to claim 1, characterized in that the top of the elastic balloon (2) is provided with a through hole (8), and the inside of the through hole (8) is provided with a protective ring (9).
6. The laboratory pipette according to claim 5, wherein the outer surface of the guard ring (9) is provided with an annular sealing clamping groove (10) corresponding to the thickness of the inner wall of the elastic air bag (2), and the annular sealing clamping groove (10) is adhered and sealed on the outer wall of the elastic air bag (2).
7. Laboratory pipette according to claim 6, wherein the top surface of the guard ring (9) is provided with a one-way valve (11) which is communicated with the inner side of the elastic air bag (2), and one end of the one-way valve (11) connected with the guard ring (9) is fixedly provided with a threaded rotary rod (12) which is screwed on the inner side of the guard ring (9) in a threaded sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321599074.2U CN220027067U (en) | 2023-06-21 | 2023-06-21 | Pipette for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321599074.2U CN220027067U (en) | 2023-06-21 | 2023-06-21 | Pipette for laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220027067U true CN220027067U (en) | 2023-11-17 |
Family
ID=88733813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321599074.2U Active CN220027067U (en) | 2023-06-21 | 2023-06-21 | Pipette for laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220027067U (en) |
-
2023
- 2023-06-21 CN CN202321599074.2U patent/CN220027067U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |