CN205340843U - Electronic pipette - Google Patents
Electronic pipette Download PDFInfo
- Publication number
- CN205340843U CN205340843U CN201620011977.8U CN201620011977U CN205340843U CN 205340843 U CN205340843 U CN 205340843U CN 201620011977 U CN201620011977 U CN 201620011977U CN 205340843 U CN205340843 U CN 205340843U
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- China
- Prior art keywords
- bleed
- electric
- pipette
- electrically operated
- operated valve
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Abstract
The utility model relates to an electronic pipette, include pipette, gas flowmeter, bleed or press liquid device and control system, the upper end that gas flowmeter's air inlet passes through electric valve and pipette links to each other, the gas outlet with bleed or press the liquid device to link to each other, control system respectively with gas flowmeter, electric valve, bleed or press the liquid device to link to each other. Adopt the utility model discloses electronic pipette can be automatically, the accuracy is moved and is got great volume liquid.
Description
Technical field
This utility model relates to a kind of pipet, is specifically related to a kind of pipet that can automatically, accurately move liquid.
Background technology
At present in the chemical analysis of laboratory, the pipettor that people commonly use has two kinds: (1) pipet, according to the volume of moved solution and the pipet use requiring selection appropriate size.(2) liquid-transfering gun, when being analyzed the research in test, is generally adopted liquid-transfering gun and measures a small amount of or trace liquid.Pipet can pipette bulky liquid, but shortcoming is it is also obvious that it not only can not control volume by automatic ration, and speed of operation is slow, and accidentally, often in test solution inspiration rubber pipette bulb, causing very big trouble, personal error is relatively larger, the liquid-transfering gun then precision that most people select is high, can finding in time once make a mistake, but liquid-transfering gun once can only pipette the liquid of 100 μ L, the solution bigger for volume is just had no idea.
Pipet is used to accurately pipette the measuring device of the solution of certain volume.Pipet is that one measures formula instrument, is only used for measuring the volume of its released solution.It is the slender glass tube that there is an enlargement centre.Its lower end is point mouth shape, and a graticule is carved with at neck place, upper end, is the mark of the exact volume pipetted.Conventional pipet has 5, and 10,25, and 50mL equal-specification.Pipette is called generally again having graduated straight glass tubing.Conventional pipette has 1, and 2,5, and 10mL equal-specification.The volume that pipet and pipette pipette generally can be accurate to 0.01mL.At present, in chemical analysis, point taking solution is requisite operation.Generally all draw with pipet.Owing to the precision requirement of chemical experiment is higher, even if there being the mistake of a bit, it is also possible to affect the result of whole experiment.Therefore, when pipetting solution with pipet, degree of accuracy becomes a crucial step, in order to improve the accuracy of experiment, minimum necessitates near for error.Therefore, electric pipette just serves decisive role.
Summary of the invention
The purpose of this utility model is to solve the defect existed in prior art, it is provided that a kind of device that can automatically, accurately pipette larger volume liquid.
In order to achieve the above object, this utility model provides a kind of electric pipette, including pipet, gas flowmeter, bleeds or hydraulic fluid device and control system；The air inlet of gas flowmeter is connected with the upper end of pipet by electrically operated valve, gas outlet with bleed or hydraulic fluid device is connected；Control system respectively with gas flowmeter, electrically operated valve, bleed or hydraulic fluid device is connected.
Wherein, bleed or hydraulic fluid device adopts electric air pump.Control system is connected with the power supply of electric air pump.
This utility model electric pipette also includes air cavity；Air cavity is connected with the gas outlet of electric air pump.
Air cavity is hollow ball-shape.
Air cavity respectively through electrically operated valve with bleed or hydraulic means is connected, gas flowmeter be connected.
This utility model has the advantage that 1 compared to existing technology, by the control of electrodynamic instrument, it is possible to reduce artificial error when moving liquid, thus improving the accuracy of experimental result；2, by the automatic operation of instrument, it is possible to make experimenter reduce fatigue, improve conventional efficient；3, simple to operate, reduce the loss of liquid when pipetting.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model electric pipette；
Fig. 2 is the structured flowchart of this utility model electric pipette；
Fig. 3 is the another kind of structured flowchart of this utility model electric pipette.
In figure, 1-electrically operated valve 1,2-gas flowmeter, 3-bleeds or hydraulic fluid device, 4-air cavity, and 5-controls system, 6-pipet.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in detail.
As it is shown in figure 1, this utility model electric pipette, it is the improvement to existing pipet 6, including pipet 6, electrically operated valve 1, gas flowmeter 2, bleeds or hydraulic fluid device 3, air cavity 4 and control system 5.Control system 5 adopts liquid level controller (liquid level controller that Shanghai Automatic Instrument and Meter Factory No.5 produces).Pipet 6 connects a gas flowmeter 2 above through electrically operated valve 1.The air inlet of gas flowmeter 2 is connected with electrically operated valve 1, gas outlet with bleed or hydraulic fluid device 3 is connected.Display in the middle of gas flowmeter 2 can show the flow volume extracting gas, namely pipettes the volume of liquid.In conjunction with Fig. 2, bleed or hydraulic fluid device 3 includes FM series mini air pump, the power supply that electric air pump adopts Chengdu Qihai E & M Manufacturing Co., Ltd. to produce.Control system 5 is connected with power supply by internal control circuit, controls the startup of electric air pump.Electric air pump can be fixed by support.When electric air pump starts, can gas bleeding.Air cavity 4 is hollow ball-shape, is connected with the gas outlet of electric air pump, preserves the gas that electric air pump is extracted out, is released by gas when treating hydraulic fluid again.
In order to prevent electric air pump from leaking gas, affect the precision of extracting liquid volume, this electric pipette with the addition of two electrically operated valves, as shown in Figure 3.Air cavity connects electric air pump and gas flowmeter respectively through electrically operated valve 2, electrically operated valve 3.
For electric pipette shown in Fig. 3, during use, the volume of liquid to be pipetted is set, pipet 6 is stretched in solution to be pipetted, control system 5 sends a command to electrically operated valve 1, open electrically operated valve 1, electrically operated valve 2, close electrically operated valve 3, instruction is sent again by control system 5, control electric air pump by control circuit to start, extract quantitative gas to air cavity 4, pipet 6 draws the liquid of same volume simultaneously, close electrically operated valve 1, electrically operated valve 2, close electric air pump, then pipet 6 is placed in above the container waiting to move into liquid, control system 5 sends a command to electrically operated valve 1, electrically operated valve 3, open electrically operated valve 1, electrically operated valve 3, change due to air pressure, the gas extracted is got rid of by air cavity 4, the solution drawn also enters in the container waiting to move into liquid.
Claims (5)
1. an electric pipette, it is characterised in that: described electric pipette includes pipet, gas flowmeter, bleed or hydraulic fluid device and control system；The air inlet of described gas flowmeter is connected with the upper end of described pipet by electrically operated valve, and bleed with described in gas outlet or hydraulic fluid device is connected；Described control system respectively with gas flowmeter, electrically operated valve, bleed or hydraulic fluid device is connected.
2. electric pipette according to claim 1, it is characterised in that: described in bleed or hydraulic fluid device adopt electric air pump；Described control system is connected with the power supply of electric air pump.
3. electric pipette according to claim 2, it is characterised in that: described electric pipette also includes air cavity；Described air cavity is connected with the gas outlet of electric air pump.
4. electric pipette according to claim 3, it is characterised in that: described air cavity is hollow ball-shape.
5. electric pipette according to claim 3, it is characterised in that: described air cavity respectively through electrically operated valve with bleed or hydraulic means is connected, gas flowmeter be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620011977.8U CN205340843U (en) | 2016-01-07 | 2016-01-07 | Electronic pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620011977.8U CN205340843U (en) | 2016-01-07 | 2016-01-07 | Electronic pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205340843U true CN205340843U (en) | 2016-06-29 |
Family
ID=56174108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620011977.8U Expired - Fee Related CN205340843U (en) | 2016-01-07 | 2016-01-07 | Electronic pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205340843U (en) |
-
2016
- 2016-01-07 CN CN201620011977.8U patent/CN205340843U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20180107 |