CN2664687Y - Syringe piston seal - Google Patents
Syringe piston seal Download PDFInfo
- Publication number
- CN2664687Y CN2664687Y CN 03205346 CN03205346U CN2664687Y CN 2664687 Y CN2664687 Y CN 2664687Y CN 03205346 CN03205346 CN 03205346 CN 03205346 U CN03205346 U CN 03205346U CN 2664687 Y CN2664687 Y CN 2664687Y
- Authority
- CN
- China
- Prior art keywords
- potted component
- syringe
- piston
- injection tube
- piston seal
- 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
Links
Abstract
The utility model relates to a piston seal applied in syringes, which comprises the first and the second sealing components. One head face of the second sealing component is bound with the first sealing component. And the third sealing component is also included, which is bound with the other head face of the second sealing component. The easy leakage problem on the use of traditional syringe can be effectively resolved, and the accuracy of the spraying of the syringe can also be enhanced.
Description
Technical field
This utility model is the piston seal body that is used for syringe about a kind of.
Background technology
Very wide of the application of syringe, from the syringe of cake ejection fine rule, medically the syringe of injection medicament is to the industrial syringe that is used for spraying a certain amount of glue or oil, and is too numerous to enumerate.In general, syringe has an injection tube and a piston, and wherein this injection tube is to be used for the material that splendid attire desires to be ejected, and this piston then is used for inserting in this injection tube, promotes this piston by external force and makes that the material of splendid attire in this injection tube sprayed.
Be the syringe of using on the traditional industry as shown in Figure 1, it is that a piston 2A is inserted among the injection tube 1A, wherein this piston 2A is by the elastic material of a tool, made as rubber and so on material, and the internal diameter that has than this injection tube 1A is wide external diameter, thus, when this piston 2A is inserted this injection tube 1A, the inner tube wall of this injection tube 1A just can push the outer wall of this piston 2A, and the effect of generation sealing, relend by an external force and act on this piston 2A material ejection that just can this injection tube 1A is interior.
Yet, the syringe of this type of industrial usefulness can make injection tube be out of shape because of injection pressure at present, cause the sealing between injection tube and the piston to reduce, the problem of gas leakage takes place easily, promptly be used for piston is exerted pressure, and then the material of desiring to be ejected in the air infiltration injection tube of promotion piston, cause ejection deterioration in accuracy or material can't spray (vent plug), even desire in the injection tube material that is ejected from piston end ooze out and return and board on, cause the board fault.Therefore, need a kind of utility model to solve above-mentioned shortcoming.
The utility model content
The purpose of this utility model provides a kind of piston seal body that is used for syringe, and this piston seal body can effectively solve conventional syringe and use the problem that goes up easy gas leakage, and can improve the precision of syringe ejection.
The purpose of this utility model is achieved in that promptly provides a kind of piston seal body that is used for syringe, comprising:
One first potted component; With
One second potted component, one end combines with this first potted component; And
One the 3rd potted component combines with the other end of this second potted component.
The advantage of this utility model device is, can effectively solve traditional industry uses the upward easy gas leakage of syringe use and makes air infiltrate the material of desiring to be ejected in the injection tube, cause ejection deterioration in accuracy or material can't spray (vent plug), even desire in the injection tube material that is ejected from piston end ooze out and return and board on, cause the problem of board fault, and can improve the precision of syringe ejection.
In order to enable further to understand this utility model feature and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for this utility model is limited.
Description of drawings
Fig. 1 is a structural representation of using syringe on the traditional industry;
Fig. 2 is the structural representation that is used for the piston seal body of syringe of the present utility model;
Label declaration
1 injection tube 1A injection tube
2A piston 13 locating holes
3 piston 3a, first potted component
3a1 centre bore 3a2 end face
The 3b second potted component 3b1 end face
The 3b2 end face
3c the 3rd potted component 3c1 end face
The specific embodiment
Embodiment of the present utility model described below is relevant with syringe with industrial glue or some oil.Yet this utility model is applicable to all products relevant with syringe.
As shown in Figure 2, the structural representation that is used for the piston seal body of syringe for this utility model, it has an injection tube 1 and a piston 3, and wherein this injection tube 1 has one first opening and second opening (not showing at this), wherein the external diameter of this first opening than the external diameter of this second opening come big; This piston 3 is made up of one first potted component 3a, one second potted component 3b and one the 3rd potted component 3c.
This first potted component 3a has a centre bore 3a1 and communicates with this second potted component 3b, its material is a resilient material, as rubber, plastics or its equivalent material, it is a sealing gasket (lip seal ring) in the present embodiment, and its external diameter is greater than the internal diameter of this injection tube 1; This second potted component 3b one end 3b1 combines with the end face 3a2 of this first potted component 3a, and see through this centre bore 3a1 and communicate, its material is a soft and resilient soft material more next than this first potted component 3a, as Teflon (Teflon) or its equivalent material, it can expand because of being subjected to extraneous pressure; The 3rd potted component 3c one end 3c1 then combines with the other end 3b2 of this second potted component 3b, its material is a resilient material, as rubber, plastics or its equivalent material, it is a sealing gasket (lip seal ring) in the present embodiment, and its external diameter is greater than the internal diameter of this injection tube 1.
When this piston 3 is inserted this injection tube 1 by first opening of this injection tube 1, because the external diameter of this first potted component 3a and the 3rd potted component 3c is greater than the internal diameter of this injection tube 1, so can form sealing effectiveness with the inner tube wall of this injection tube 1.When first opening part via this injection tube 1 is bestowed an air pressure to this piston 3, compressed air is after filling up this first potted component 3a, can enter this second potted component 3b via this centre bore 3a1, this second potted component 3b after being full of compressed air, can expand and with the inner tube wall driving fit of this injection tube 1, make airtight better, and the 3rd potted component 3c combines with this second potted component 3b and makes this second potted component 3b typing, just can be with the second opening ejection of the material in this injection tube 1 via this injection tube 1.Thus, even when the inner tube wall of this injection tube 1 has micro-deformation because of air pressure, this second potted component 3b can fill and causes airtight according to the deflection of inner tube wall, just can effectively solve traditional industry uses upward gas leakage easily and makes air infiltrate the material of desiring to be ejected in the injection tube with syringe, cause ejection deterioration in accuracy or material can't spray (vent plug), even desire in the injection tube material that is ejected from piston end ooze out and return and board in, cause the problem of board fault, and can improve the precision of syringe ejection.
In sum; though this utility model discloses as above with preferred embodiment; right its is not in order to limit this utility model; any insider; in not breaking away from spirit and scope of the present utility model; when being used for a variety of modifications and variations, therefore protection domain of the present utility model is as the criterion when looking the accompanying Claim book person of defining.
Claims (8)
1. a piston seal body that is used for syringe is characterized in that, comprising:
One first potted component;
One second potted component, one end combines with this first potted component; And
One the 3rd potted component combines with the other end of this second potted component.
2. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, this first potted component has a centre bore and communicates with this second potted component.
3. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, this second potted component is a resilient soft material, and it can expand because of being subjected to extraneous pressure.
4. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, this its material of first potted component is rubber or plastics or its equivalent material.
5. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, this first potted component is a sealing gasket (lip seal ring).
6. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, this its material of second potted component is Teflon (Teflon) or its equivalent material.
7. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, its material of the 3rd potted component is rubber or plastics or its equivalent material.
8. the piston seal body that is used for syringe as claimed in claim 1 is characterized in that, the 3rd potted component is a sealing gasket (lip seal ring).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03205346 CN2664687Y (en) | 2003-08-12 | 2003-08-12 | Syringe piston seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03205346 CN2664687Y (en) | 2003-08-12 | 2003-08-12 | Syringe piston seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2664687Y true CN2664687Y (en) | 2004-12-22 |
Family
ID=34324287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03205346 Expired - Fee Related CN2664687Y (en) | 2003-08-12 | 2003-08-12 | Syringe piston seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2664687Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203029A (en) * | 2012-01-13 | 2013-07-17 | 通用电气公司 | Fluid Path System For Dissolution And Transport Of A Hyperpolarized Material |
| CN107126603A (en) * | 2016-02-26 | 2017-09-05 | 麦迪莫普医疗工程有限公司 | Reduced plunger is leaked during storing |
| US11434889B2 (en) | 2019-06-25 | 2022-09-06 | Beijing Beifen-Ruili Analytical Instrument (Group) Co., Ltd. | Piston seal structure for injector |
-
2003
- 2003-08-12 CN CN 03205346 patent/CN2664687Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203029A (en) * | 2012-01-13 | 2013-07-17 | 通用电气公司 | Fluid Path System For Dissolution And Transport Of A Hyperpolarized Material |
| CN107126603A (en) * | 2016-02-26 | 2017-09-05 | 麦迪莫普医疗工程有限公司 | Reduced plunger is leaked during storing |
| CN107126603B (en) * | 2016-02-26 | 2021-04-27 | 麦迪莫普医疗工程有限公司 | Plunger with reduced leakage during storage |
| US11434889B2 (en) | 2019-06-25 | 2022-09-06 | Beijing Beifen-Ruili Analytical Instrument (Group) Co., Ltd. | Piston seal structure for injector |
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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 |