CN2399718Y - Semi-automatic suction tubes - Google Patents
Semi-automatic suction tubes Download PDFInfo
- Publication number
- CN2399718Y CN2399718Y CN 99256643 CN99256643U CN2399718Y CN 2399718 Y CN2399718 Y CN 2399718Y CN 99256643 CN99256643 CN 99256643 CN 99256643 U CN99256643 U CN 99256643U CN 2399718 Y CN2399718 Y CN 2399718Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- suction pipe
- piston
- admission hole
- air admission
- 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.)
- Expired - Fee Related
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- Devices For Use In Laboratory Experiments (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a semi-automatic suction tube, which belongs to the technical field of devices used for analysis tests. The upper part of the suction tube is fixedly connected with a negative pressure device which is composed of a piston and a piston barrel. The lateral wall of the piston barrel is connected with an air inlet mechanism. The adoption of the utility model leads the operation of sucking liquid, moving liquid, and discharging liquid to be carried out conveniently and accurately.
Description
The utility model belongs to analyzes experiment utensil technical field, particularly a kind of selectapette.
In various analysis experiments were tested as chemical analysis, medical analysis, biological analysis, the application of measuring pipette was very extensive.Existing suction pipe generally needs to produce negative pressure with rubber pipette bulb and carries out imbibition, and needs the operation of two hand close fit, is difficult for grasping, and often needs just can reach for several times repeatedly the requirement of accurate extraction liquid; Discharge liquid is touched suction pipe upper end die by the finger pressure and controlled, and is inaccurate, not easy to operate, and then influences experimental result.
The purpose of this utility model is to provide a kind of selectapette easy to use.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: a kind of selectapette, the fixedly connected negative pressure device of being made up of piston cylinder and piston in suction pipe top.
Piston cylinder sidewall connection one comprises the admission gear of sleeve, vertical dividing plate is set in the sleeve, the dividing plate inboard has a tapered plug, the outside to have a connecting rod that is with spring to link to each other with baffle plate, and connecting rod the inner is passed air admission hole and linked to each other with tapered plug awl point, and the awl point inserts air admission hole and closely cooperates with it; Sleeve has a button to link to each other with baffle plate in the sleeve by sleeve outer end air admission hole outward.Suction pipe is a measuring pipette.
Fig. 1 is the utility model structural representation.
The design that the utility model adopts pipette to cooperate with negative pressure device, simple in structure, during use. To Upper twitch piston forms negative pressure in the piston cylinder, liquid namely is inhaled in the suction pipe. During discharge liquid, directly Under press piston and get final product, perhaps by pressing the button of piston side wall institute connected set tube outer end, air is by air inlet The hole enters in the plunger shaft, and compressing liquid is discharged suction pipe, but this kind design accurate quantitative analysis releasing liquid, operation Simply, easy to use.
Further specify the utility model in conjunction with the accompanying drawings below by embodiment.
Embodiment, a kind of selectapette comprises measuring pipette 1, and the suction pipe upper end is communicated with fixing with piston cylinder 2, and it is piston push rod that piston 3,4 is housed in the piston cylinder.The piston cylinder sidewall is connected with sleeve 5, and sleeve 5 is communicated with piston by air admission hole 12, establishes vertical dividing plate 6 in the sleeve, and the dividing plate inboard has a tapered plug 7, the outside to have a connecting rod 9 that is with spring 8 to link to each other with baffle plate 10.Tapered plug awl point inserts air admission hole 11 and closely cooperates with it.Sleeve has a button 12 to link to each other with baffle plate in the sleeve outward, and baffle plate rises and stops spring action.Upwards twitch piston, form negative pressure promptly liquid suction suction pipe in plunger shaft.Pressing button, but move in the drivening rod promotion tapered plug, tapered plug awl point breaks away from air admission hole 11, and air enters sleeve from air admission hole 13, enters plunger shaft through air admission hole 11,12, oppresses liquid and discharges.In the pumping liquid process, tapered plug and air admission hole 11 fit tightly, and baffle plate outside surface and air admission hole 13 driving fits are air tight.
Claims (3)
1, a kind of selectapette, the utility model are characterised in that, the fixedly connected negative pressure device of being made up of piston cylinder and piston in suction pipe top.
2, suction pipe as claimed in claim 1, it is characterized in that, piston cylinder sidewall connection one comprises the admission gear of sleeve, vertical dividing plate is set in the sleeve, the dividing plate inboard has a tapered plug, the outside to have a connecting rod that is with spring to link to each other with baffle plate, connecting rod the inner is passed air admission hole and is linked to each other with tapered plug awl point, and the awl point inserts air admission hole and closely cooperates with it; Sleeve has a button to link to each other with baffle plate in the sleeve by sleeve outer end air admission hole outward.
3, suction pipe as claimed in claim 2 is characterized in that, suction pipe is a measuring pipette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256643 CN2399718Y (en) | 1999-12-07 | 1999-12-07 | Semi-automatic suction tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256643 CN2399718Y (en) | 1999-12-07 | 1999-12-07 | Semi-automatic suction tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399718Y true CN2399718Y (en) | 2000-10-04 |
Family
ID=34039711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99256643 Expired - Fee Related CN2399718Y (en) | 1999-12-07 | 1999-12-07 | Semi-automatic suction tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399718Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923078A (en) * | 2010-08-11 | 2010-12-22 | 苏州大学 | Column chromatography sample applicator and application method thereof |
| CN101936969A (en) * | 2010-08-11 | 2011-01-05 | 苏州大学 | Sample applicator |
| CN106153391A (en) * | 2015-04-11 | 2016-11-23 | 沈蓉蓉 | A kind of metallic compound extraction detection device |
| CN112534987A (en) * | 2020-12-01 | 2021-03-23 | 水利部牧区水利科学研究所 | Device for improving breeding rate of grass and flower seeds |
-
1999
- 1999-12-07 CN CN 99256643 patent/CN2399718Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923078A (en) * | 2010-08-11 | 2010-12-22 | 苏州大学 | Column chromatography sample applicator and application method thereof |
| CN101936969A (en) * | 2010-08-11 | 2011-01-05 | 苏州大学 | Sample applicator |
| CN106153391A (en) * | 2015-04-11 | 2016-11-23 | 沈蓉蓉 | A kind of metallic compound extraction detection device |
| CN112534987A (en) * | 2020-12-01 | 2021-03-23 | 水利部牧区水利科学研究所 | Device for improving breeding rate of grass and flower seeds |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |