CN203635231U - Gunpoint structure for pipettor - Google Patents
Gunpoint structure for pipettor Download PDFInfo
- Publication number
- CN203635231U CN203635231U CN201320867396.0U CN201320867396U CN203635231U CN 203635231 U CN203635231 U CN 203635231U CN 201320867396 U CN201320867396 U CN 201320867396U CN 203635231 U CN203635231 U CN 203635231U
- Authority
- CN
- China
- Prior art keywords
- gunpoint
- rifle
- gun head
- connection part
- connecting portion
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a gunpoint structure for a pipettor. The gunpoint structure comprises a gun head fixed on a pipetting box, wherein a gunpoint is arranged at the lower end of the gun head; the gun head comprises a gun head body and a connection part arranged at the bottom of the gun head body; the gunpoint is arranged on the connection part in a sleeving manner; the connection part is a conical frustum with a large upper part and a small lower part; the gunpoint is matched with the shape of the connection part; a sealing ring for sealing the gunpoint and the connection part is arranged between the gunpoint and the connection part. Due to the technical scheme, the conical degree of the gun head and an O-shaped ring are matched with the gunpoint structure, so that the gun head can be machined in a machinery manner with the high material hardness and the relatively low total cost; and therefore, the cost is lowered, and the problem that the gun head produced in the machinery manner cannot meet a requirement on the matched sealing property is solved.
Description
Technical field
The utility model relates to a kind of pipettor, is specifically related to a kind of pipettor rifle point structure.
Background technology
Pipettor be medical experiment and detect in conventional instrument, be usually used in pipetting of a small amount of or micro liquid in laboratory.The key that pipettor is realized its function is the sealing after rifle head and plastics rifle point closely cooperate.Therefore very high to the requirement of rifle head.Present most of producer is all the softer engineering plastics of this class material of polytetrafluoroethylene (PTFE) for its material of making of rifle head, and processing technology is all die sinking processing.Die sinking processing can ensure that the tapering of rifle head and rifle point mating part is in full accord, and because polytetrafluoroethylene (PTFE) material is soft, rifle head can closely cooperate with rifle point, the sealing while ensureing to get liquid.But because die sinking cost is high, in small lot batch manufacture, be often not suitable for application needs.Commonplace low cost processing method is machining, i.e. lathe processing.But lathe machining accuracy is lower, and because polytetrafluoroethylene (PTFE) material is too soft, when machining, deflection is larger, cannot meet required precision, often use the even harder material of this class material of aluminium alloy of nylon instead, this also makes working poor of rifle head and rifle point a lot, affects its sealing.So a lot of producers can be at rifle head mounting O-shaped rings in the situation that rifle head is produced by machining, by O type circle and rifle point coordinate to ensure sealing, but now often ignore coordinating of rifle head and rifle point, make the sharp easy swing of rifle, unstable.
Utility model content
The purpose of this utility model is to provide a kind of pipettor rifle point structure, and this rifle point structure has solved the rifle head of producing in machining situation and can not meet the problem that fitted seal requires.
For achieving the above object, the utility model has adopted following technical scheme: comprise and the rifle head that moves liquid box and fix, described rifle head lower end is provided with rifle point, described rifle head comprises the connecting portion that rifle head body and rifle head body bottom arrange, described rifle point is set on connecting portion, described connecting portion is the little frustum of a cone in large bottom, top, and described rifle point matches with the shape of connecting portion, and between rifle point and connecting portion, is provided with both sealing rings of sealing.
Described sealing ring is O RunddichtringO.
Described rifle head is made up of polyamide material.
As shown from the above technical solution, the utility model is by adding by rifle nose cone degree the structure that O type circle coordinates rifle point, thereby can in machining and the lower-cost situation of material hardness religion large population, carry out the processing of rifle head, thereby reduce costs, solved the rifle head of producing in machining situation and can not meet the problem that fitted seal requires.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is use state diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
Rifle point structure for a kind of pipettor as shown in Figure 1 and Figure 2, comprise and the rifle head 2 that moves liquid box 1 and fix, rifle head 2 lower ends are provided with rifle point 3, rifle head 2 comprises the connecting portion 22 that rifle head body 21 and rifle head body 21 bottoms arrange, rifle point 3 is set on connecting portion 22, connecting portion 22 is the little frustum of a cone in large bottom, top, and rifle point 3 matches with the shape of connecting portion 22, and is provided with both sealing rings 4 of sealing between rifle point 3 and connecting portion 22.The bottom of rifle head body 21 is provided with the connecting portion 22 matching with rifle point in other words, connecting portion 22 is truncated cone shape, namely the processing tapering of connecting portion 22 and rifle point 3 are consistent, can prevent so the stressed swing that rifle point 3 causes in the time being pressed into by rifle head 2, be equipped with sealing ring 4 seals simultaneously, can ensure well the sealing of rifle head 2 and rifle point 3, realize the accurate extraction that moves liquid box 1.
Further, sealing ring 4 is O RunddichtringO.
Further, rifle head 2 is made up of polyamide material.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (3)
1. a rifle point structure for pipettor, comprise and the rifle head (2) that moves liquid box (1) and fix, described rifle head (2) lower end is provided with rifle point (3), it is characterized in that: described rifle head (2) comprises the connecting portion (22) that rifle head body (21) and rifle head body (21) bottom arrange, described rifle point (3) is set on connecting portion (22), described connecting portion (22) is the little frustum of a cone in large bottom, top, described rifle point (3) matches with the shape of connecting portion (22), and between rifle point (3) and connecting portion (22), be provided with both sealing rings (4) of sealing.
2. rifle point structure for pipettor according to claim 1, is characterized in that: described sealing ring (4) is O RunddichtringO.
3. rifle point structure for pipettor according to claim 1, is characterized in that: described rifle head (2) is made up of polyamide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867396.0U CN203635231U (en) | 2013-12-26 | 2013-12-26 | Gunpoint structure for pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867396.0U CN203635231U (en) | 2013-12-26 | 2013-12-26 | Gunpoint structure for pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203635231U true CN203635231U (en) | 2014-06-11 |
Family
ID=50866515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320867396.0U Expired - Lifetime CN203635231U (en) | 2013-12-26 | 2013-12-26 | Gunpoint structure for pipettor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203635231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073473A (en) * | 2014-08-20 | 2017-08-18 | Rai策略控股有限公司 | Liquor-transferring system |
| CN107398310A (en) * | 2017-02-22 | 2017-11-28 | 佛山市工芯精密机械有限公司 | A kind of pipettor is interrupted |
-
2013
- 2013-12-26 CN CN201320867396.0U patent/CN203635231U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073473A (en) * | 2014-08-20 | 2017-08-18 | Rai策略控股有限公司 | Liquor-transferring system |
| CN107398310A (en) * | 2017-02-22 | 2017-11-28 | 佛山市工芯精密机械有限公司 | A kind of pipettor is interrupted |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |