CN102974414A - Piston type liquid relief device of pipettor - Google Patents
Piston type liquid relief device of pipettor Download PDFInfo
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- CN102974414A CN102974414A CN 201210455143 CN201210455143A CN102974414A CN 102974414 A CN102974414 A CN 102974414A CN 201210455143 CN201210455143 CN 201210455143 CN 201210455143 A CN201210455143 A CN 201210455143A CN 102974414 A CN102974414 A CN 102974414A
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Abstract
To resolve problems existing in the prior art, the invention discloses a piston type liquid relief device of a pipettor. The piston type liquid relief device comprises a piston cavity provided with an inclined table, a piston body, a spring, a connecting rod with a platform on the top portion, a seal body and a seal ring, wherein the seal body and the seal ring are connected to the piston body in a sleeved mode to be clamped to the inclined table at the upper end of the piston cavity. In operation, the piston body moves up and down relative to the piston cavity, the piston cavity abuts against the seal body and the seal ring which are sleeved on the piston body in a sealed mode; and the spring is sleeved to the connecting rod and abuts against the platform. When the connecting rod pushes exhaust or drainage liquid under the action of external force, and in the process of gradual pressure reduction, the spring can be replaced. The piston type liquid relief device is good in sealing effect, long in service life, and capable of maintaining long-time accurate using precision.
Description
Technical field
The present invention relates to a kind of trace and get the liquid instrument field, relate in particular to a kind of piston type liquid-transfering device of pipettor.
Background technology
Hospital laboratory, chemical industry, a lot of experiments of biological industry often face the situation that needs the Check processing batch samples, perhaps need the operation of multiple detection reagent, pipettor is that a kind of low capacity liquid commonly used in this type of experiment shifts sample adding device, be used for drawing sample or reagent in experimental implementation, existing pipettor generally is to be provided with adapter sleeve in piston tip, come the control piston structure by spring, piston structure links to each other to control absorption and the discharging of liquid in the front end cavity with adapter sleeve, piston and adapter sleeve are rigid structure, the sealing effectiveness that causes easy to wear reduces in operating process, thereby produces experimental error.
Summary of the invention
For the problem that above-mentioned prior art exists, the invention provides a kind of piston type liquid-transfering device of pipettor, good sealing effect, long service life can keep accurately service precision for a long time.
The problem that exists for solving above-mentioned prior art, the technical scheme that the present invention takes is: a kind of piston type liquid-transfering device of pipettor, comprise that the plunger shaft, piston body, spring, the top that are provided with sloping platform are provided with connecting rod, seal and the sealing ring of platform, on described seal and sealing ring socket and the piston body, card is established and sloping platform place, plunger shaft upper end.During operation, piston body moves up and down with respect to plunger shaft, and its sealing relies on seal and the sealing ring that is socketed on the piston body; Spring housing is connected on the connecting rod and with platform and offsets.After under external force pressure gas or discharge opeing of connecting rod, reduce gradually in the press process and can make it to reset by spring.
Described piston body is provided with the annular slot structure, and described sealing ring is fixed on the seal lower end by the annular slot structure.
Described sealing ring is the wearable elastic plastics.
The invention has the advantages that: simple in structure, good sealing effect, long service life can keep accurately service precision for a long time.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that piston body of the present invention moves down structural representation;
Wherein: 1 plunger shaft, 2 piston bodies, 3 seals, 4 sealing rings, 5 sloping platforms, 6 notchs, 7 platforms, 8 springs, 9 connecting rods.
The specific embodiment
The present invention is described in detail below in conjunction with the specific embodiment.
The piston type liquid-transfering device of a kind of pipettor shown in Fig. 1-2, comprise that the plunger shaft 1, piston body 2, spring 8, the top that are provided with sloping platform 5 are provided with connecting rod 9, seal 3 and the sealing ring 4 of platform 7, on described seal 3 and sealing ring 4 sockets and the piston body 2, card is established and plunger shaft 1 upper end sloping platform 5 places.During operation, piston body 2 moves up and down with respect to plunger shaft 1, and its sealing relies on seal 3 and the sealing ring 4 that is socketed on the piston body 2; Spring 8 is socketed on the connecting rod 9 and with platform 7 and offsets.After under external force pressure gas or discharge opeing of connecting rod 9, reduce gradually in the press process and can make it to reset by spring 8.
The piston type liquid-transfering device of a kind of pipettor shown in Fig. 1-2, comprise that the plunger shaft 1, piston body 2, spring 8, the top that are provided with sloping platform 5 are provided with connecting rod 9, seal 3 and the sealing ring 4 of platform 7, on described seal 3 and sealing ring 4 sockets and the piston body 2, card is established and plunger shaft 1 upper end sloping platform 5 places.During operation, piston body 2 moves up and down with respect to plunger shaft 1, and its sealing relies on seal 3 and the sealing ring 4 that is socketed on the piston body 2; Spring 8 is socketed on the connecting rod 9 and with platform 7 and offsets.After under external force pressure gas or discharge opeing of connecting rod 9, reduce gradually in the press process and can make it to reset by spring 8.Described piston body 2 is provided with annular slot structure 6, and described sealing ring 4 is fixed on seal 3 lower ends by annular slot structure 6.
Embodiment 3
The piston type liquid-transfering device of a kind of pipettor shown in Fig. 1-2, comprise that the plunger shaft 1, piston body 2, spring 8, the top that are provided with sloping platform 5 are provided with connecting rod 9, seal 3 and the sealing ring 4 of platform 7, on described seal 3 and sealing ring 4 sockets and the piston body 2, card is established and plunger shaft 1 upper end sloping platform 5 places.During operation, piston body 2 moves up and down with respect to plunger shaft 1, and its sealing relies on seal 3 and the sealing ring 4 that is socketed on the piston body 2; Spring 8 is socketed on the connecting rod 9 and with platform 7 and offsets.After under external force pressure gas or discharge opeing of connecting rod 9, reduce gradually in the press process and can make it to reset by spring 8.Described piston body 2 is provided with annular slot structure 6, and described sealing ring 4 is fixed on seal 3 lower ends by annular slot structure 6.Described sealing ring 4 is the wearable elastic plastics.
More than the present invention has been done detailed description, but the invention is not restricted to the embodiments described.The equivalence that all Spirit Essences according to the present invention are done changes or modifies, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. the piston type liquid-transfering device of a pipettor comprises that the plunger shaft, piston body, spring, the top that are provided with sloping platform are provided with connecting rod, seal and the sealing ring of platform, and on described seal and sealing ring socket and the piston body, card is established and sloping platform place, plunger shaft upper end; Spring housing is connected on the connecting rod and with platform and offsets.
2. the piston type liquid-transfering device of pipettor according to claim 1, it is characterized in that: described piston body is provided with the annular slot structure, and described sealing ring is fixed on the seal lower end by the annular slot structure.
3. the piston type liquid-transfering device of each described pipettor according to claim 1 and 2, it is characterized in that: described sealing ring is the wearable elastic plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210455143 CN102974414A (en) | 2012-11-14 | 2012-11-14 | Piston type liquid relief device of pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210455143 CN102974414A (en) | 2012-11-14 | 2012-11-14 | Piston type liquid relief device of pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102974414A true CN102974414A (en) | 2013-03-20 |
Family
ID=47848929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210455143 Pending CN102974414A (en) | 2012-11-14 | 2012-11-14 | Piston type liquid relief device of pipettor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102974414A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346683A (en) * | 2020-04-13 | 2020-06-30 | 李江隽 | Pipetting device and pipetting method |
| CN113677435A (en) * | 2019-03-08 | 2021-11-19 | 瑞尔赛特股份有限公司 | Devices, systems, and methods for selecting target analytes |
| CN114104515A (en) * | 2021-12-01 | 2022-03-01 | 苏州含光微纳科技有限公司 | Portable liquid storage and transfer device |
-
2012
- 2012-11-14 CN CN 201210455143 patent/CN102974414A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677435A (en) * | 2019-03-08 | 2021-11-19 | 瑞尔赛特股份有限公司 | Devices, systems, and methods for selecting target analytes |
| CN111346683A (en) * | 2020-04-13 | 2020-06-30 | 李江隽 | Pipetting device and pipetting method |
| CN114104515A (en) * | 2021-12-01 | 2022-03-01 | 苏州含光微纳科技有限公司 | Portable liquid storage and transfer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 315191 Jiangshan Huatai Town, Ningbo, Zhejiang, Yinzhou District Applicant after: Topscien Instrument (Ningbo) Co., Ltd. Address before: 315191 Jiang Shanhua, Jing Xingcheng, Ningbo, Zhejiang, Yinzhou District Applicant before: Topscien Instrument (Ningbo) Co., Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |