CN218359320U - Simple and convenient type accurate pipettor - Google Patents
Simple and convenient type accurate pipettor Download PDFInfo
- Publication number
- CN218359320U CN218359320U CN202222394121.1U CN202222394121U CN218359320U CN 218359320 U CN218359320 U CN 218359320U CN 202222394121 U CN202222394121 U CN 202222394121U CN 218359320 U CN218359320 U CN 218359320U
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- pipette
- push rod
- clamping
- groove
- rod
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Abstract
The utility model relates to a simple and convenient type accurate pipettor, which comprises a pipette and a push rod, wherein the pipette is internally hollow to form a pushing cavity, the push rod is arranged in the pushing cavity, and a sample extrusion opening is arranged on the pipette; the pipette is provided with a clamping through groove, the push rod is elastically provided with a fixture block, and the fixture block can be clamped in the clamping through groove in a matched manner; the push rod is pushed in the pushing cavity, the liquid is moved by the arrangement of the fixed stroke through the arrangement of the clamping groove in the pipette and the clamping block in clamping connection with the clamping groove in a matched manner, and compared with the prior art that the liquid with fixed quantity is moved by utilizing the elastic characteristic of a spring, the liquid moving device is more accurate; when the push rod moves upwards, the liquid is pumped under negative pressure, when the push rod pushes downwards, the liquid is taken out, the downward movement process is carried out until the clamping block is clamped at the clamping through groove, then the clamping block at the clamping through groove can be pressed, the clamping block is withdrawn from the clamping through groove, and the push rod can continue to move in the pushing cavity at the moment.
Description
Technical Field
The utility model relates to a pipettor, in particular to accurate pipettor of simple and convenient type.
Background
A pipette, also known as a pipette gun, is a device for quantitatively transferring liquid. In conducting analytical testing studies, small or minute amounts of liquid are typically removed using a pipette (pipette). The liquid transfer devices can be classified into Air-displacement pipette (Air-displacement pipette) and external-displacement pipette (Positive-displacement pipette) according to the principle. The gas piston type pipettor is mainly used for standard pipetting, and the external piston type pipettor is mainly used for treating special liquids such as volatile, perishable and ropy, during the use, adorns the pipette tip on the pipettor, thereby promotes the dress appearance and the sample of push rod realization sample.
However, in the prior art, a spring, a process of pressing the spring and a process of restoring the spring to a prototype are often adopted, so that quantitative sampling is realized; however, with long-term use, the elastic force of the spring is damaged, and the spring may not be restored to the original position after being pressed, which causes inaccuracy in quantity during sampling, so that a simple and convenient precise pipette is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple and convenient accurate pipettor of type.
The above technical object of the present invention can be achieved by the following technical solutions: a simple and convenient type accurate pipettor comprises a pipette and a push rod, wherein the pipette is hollow to form a push cavity, the push rod is arranged in the push cavity, and a sample extrusion port is arranged on the pipette; the pipette is provided with a clamping through groove, the push rod is elastically provided with a clamping block, and the clamping block can be matched with the clamping through groove to be clamped in the clamping through groove.
By adopting the technical scheme, the push rod is pushed in the pushing cavity, the liquid is moved by the arrangement of the fixed stroke through the arrangement of the clamping groove on the pipette and the clamping block clamped into the clamping groove in a matching manner, and compared with the prior art that the liquid with fixed quantity is moved by utilizing the elastic characteristic of the spring, the liquid moving device is more accurate; when the push rod upwards moves, for the negative pressure liquid suction state, for getting the liquid state when promoting downwards, move the process downwards until the fixture block joint leads to the groove department at the joint, then can press the fixture block that the groove department was led to the joint, make the fixture block withdraw from the logical groove of joint, the push rod can continue to move in the propelling movement chamber this moment.
Preferably, the push rod is provided with an elastic through groove, and the clamping block is arranged at the elastic through groove; an elastic connecting sheet is arranged between the clamping block and the push rod.
Preferably, the end part of the push rod is provided with a rubber push sleeve.
Through adopting above-mentioned technical scheme, the rubber pushes away the cover and has good leakproofness.
Preferably, the rubber pushes away the cover and dismantles the setting with the push rod, the push rod tip is provided with the joint head, the position department that the rubber pushed away the cover and corresponds is provided with the joint groove.
Preferably, the pipette tip end is provided with a connecting part for sleeving the pipette tip.
Preferably, the push rod comprises a bottom rod and an ejector rod, the bottom rod and the ejector rod are integrally formed, and the fixture block is arranged on the ejector rod.
Preferably, the bottom rod is cylindrical, and the side wall of the top rod is provided with a convex rib.
Preferably, one end of the fixture block close to the sample extrusion port is provided with a chamfer.
To sum up, the utility model discloses following beneficial effect has:
the push rod is pushed in the pushing cavity, the liquid is moved by the arrangement of the fixed stroke through the arrangement of the clamping groove in the pipette and the clamping block in clamping connection with the clamping groove in a matched manner, and compared with the prior art that the liquid with fixed quantity is moved by utilizing the elastic characteristic of a spring, the liquid moving device is more accurate; when the push rod moves upwards, the liquid is pumped under negative pressure, when the push rod pushes downwards, the liquid is taken out, the downward movement process is carried out until the clamping block is clamped at the clamping through groove, then the clamping block at the clamping through groove can be pressed, the clamping block is withdrawn from the clamping through groove, and the push rod can continue to move in the pushing cavity at the moment.
Drawings
FIG. 1 is a schematic view of the overall structure in the embodiment;
FIG. 2 is a schematic diagram of a partial structure in the example;
fig. 3 is a sectional view of the entire structure in the embodiment.
In the figure, 1, pipette; 2. a push rod; 11. a push chamber; 12. a sample extrusion port; 13. clamping a through groove; 14. a connecting portion; 21. a clamping block; 22. an elastic through groove; 23. an elastic connecting sheet; 24. a rubber push sleeve; 241. a clamping head; 242. a clamping groove; 251. a bottom bar; 252. a top rod; 253. and (7) a rib.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example (b):
a simple and convenient type accurate pipettor is shown in figure 1 and comprises a pipettor 1 and a push rod 2, wherein the pipettor 1 is hollow to form a push cavity 11, the push rod 2 is arranged in the push cavity 11, and a sample extrusion port 12 is arranged on the pipettor 1; be provided with the logical groove 13 of joint on the pipette 1, elasticity is provided with fixture block 21 on the push rod 2, and fixture block 21 can cooperate the joint to lead to in the groove 13 of joint.
As shown in fig. 2 and 3, an elastic through groove 22 is arranged on the push rod 2, and the fixture block 21 is arranged at the elastic through groove 22; an elastic connecting piece 23 is arranged between the clamping block 21 and the push rod 2.
As shown in fig. 2 and 3, the end of the push rod 2 is provided with a rubber push sleeve 24.
As shown in fig. 3, the rubber pushing sleeve 24 is detachably disposed on the push rod 2, a clamping joint 241 is disposed at an end of the push rod 2, and a clamping groove 242 is disposed at a position corresponding to the rubber pushing sleeve 24.
As shown in fig. 1, the pipette 1 is provided at its end with a connecting portion 14 for fitting a pipette tip.
As shown in fig. 2, the push rod 2 includes a bottom rod 251 and a top rod 252, the bottom rod 251 and the top rod 252 are integrally formed, and the latch 21 is disposed on the top rod 252.
As shown in fig. 2, the bottom bar 251 has a cylindrical shape, and the top bar 252 has a rib 253 on a sidewall thereof.
As shown in fig. 2, one end of the fixture block 21 near the sample-extruding opening 12 is chamfered.
The working principle is as follows:
when the push rod moves upwards, the push rod is in a negative-pressure liquid pumping state, when the push rod pushes downwards, the push rod is in a liquid taking state, the push rod moves downwards until the clamping block is clamped at the clamping through groove, then the clamping block at the clamping through groove can be pressed, the clamping block is withdrawn from the clamping through groove, and at the moment, the push rod can continue to move in the pushing cavity; when the push rod moves in the pushing cavity, the side wall of the rubber pushing sleeve is abutted against the side wall of the pushing cavity.
Claims (8)
1. The utility model provides an accurate pipettor of simple and convenient type, includes pipette (1) and push rod (2), its characterized in that: the pipette (1) is hollow to form a pushing cavity (11), the push rod (2) is arranged in the pushing cavity (11), and a sample extrusion opening (12) is formed in the pipette (1); the pipette is characterized in that a clamping through groove (13) is formed in the pipette (1), a clamping block (21) is elastically arranged on the push rod (2), and the clamping block (21) can be matched with the clamping through groove (13) in a clamping manner.
2. A simple precision pipette as defined in claim 1 wherein: an elastic through groove (22) is formed in the push rod (2), and the clamping block (21) is arranged at the elastic through groove (22); an elastic connecting sheet (23) is arranged between the clamping block (21) and the push rod (2).
3. A simple precision pipette as defined in claim 2 wherein: the end part of the push rod (2) is provided with a rubber push sleeve (24).
4. A simple precision pipette as defined in claim 3 wherein: the rubber pushes away cover (24) and dismantles the setting with push rod (2), push rod (2) tip is provided with joint (241), the position department that rubber pushed away cover (24) and corresponds is provided with joint groove (242).
5. The simple and convenient precision pipette of claim 4, wherein: the end part of the pipette (1) is provided with a connecting part (14) for sleeving a pipette head.
6. The easy and accurate pipette of claim 5, wherein: the push rod (2) comprises a bottom rod (251) and a top rod (252), the bottom rod (251) and the top rod (252) are integrally formed, and the clamping block (21) is arranged on the top rod (252).
7. The simple and convenient precision pipette of claim 6, wherein: the bottom rod (251) is cylindrical, and the side wall of the top rod (252) is provided with a convex rib (253).
8. A simple precision pipette as defined in claim 7 wherein: one end of the fixture block (21) close to the sample extrusion opening (12) is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222394121.1U CN218359320U (en) | 2022-09-09 | 2022-09-09 | Simple and convenient type accurate pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222394121.1U CN218359320U (en) | 2022-09-09 | 2022-09-09 | Simple and convenient type accurate pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218359320U true CN218359320U (en) | 2023-01-24 |
Family
ID=84974048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222394121.1U Active CN218359320U (en) | 2022-09-09 | 2022-09-09 | Simple and convenient type accurate pipettor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218359320U (en) |
-
2022
- 2022-09-09 CN CN202222394121.1U patent/CN218359320U/en active Active
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