CN204358237U - Deadweight safety valve valve core rod seals - Google Patents
Deadweight safety valve valve core rod seals Download PDFInfo
- Publication number
- CN204358237U CN204358237U CN201420735600.8U CN201420735600U CN204358237U CN 204358237 U CN204358237 U CN 204358237U CN 201420735600 U CN201420735600 U CN 201420735600U CN 204358237 U CN204358237 U CN 204358237U
- Authority
- CN
- China
- Prior art keywords
- core rod
- safety valve
- elastomer layer
- deadweight safety
- valve core
- 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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- Sealing Devices (AREA)
Abstract
The utility model discloses the sealing of a kind of deadweight safety valve valve core rod, relate to Sealing field, comprising: a core bar, described core bar is arranged with a seal layer, described seal layer outer wall is arranged with an elastomer layer, between described elastomer layer outer wall and sidewall, there is chamfering; Described elastomer layer adopts nitrile butadiene rubber, and described seal layer adopts nylon.The utility model solves deadweight safety valve valve core rod in prior art and is sealed in the working environment come and gone at a high speed, friction produces higher heat, wear no resistance, the problem that life-span is short, by adopting the elastomer layer of nitrile rubber and adopting the seal layer of nylon material, and chamfering is set on close elastomer layer realizes good sealing and durable use.
Description
Technical field
The utility model relates to a kind of Sealing, particularly relates to the sealing of a kind of deadweight safety valve valve core rod.
Background technique
Deadweight safety valve is installed on oil tank top, an important accessory of protection oil tank safety.When mechanical breather valve breaks down, deadweight safety valve just can replace mechanical breather valve be exhausted or exit.
Fig. 1 is the structural representation of deadweight safety valve valve core rod sealing in prior art, refer to Fig. 1, in prior art, the O shape circle that adopts adds back-up ring structure more, deadweight safety valve valve core rod of the prior art works under being sealed in the working environment come and gone at a high speed, fricative heat is higher, the wear resistance of rubber is bad again, so working life is shorter.
Model utility content
The utility model discloses the sealing of a kind of deadweight safety valve valve core rod, be sealed in the working environment come and gone at a high speed in order to solve deadweight safety valve valve core rod in prior art, friction produces higher heat, wears no resistance, the problem that the life-span is short.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
The sealing of deadweight safety valve valve core rod, wherein, comprising: a core bar, described core bar is arranged with a seal layer, described seal layer outer wall is arranged with an elastomer layer, has chamfering between described elastomer layer outer wall and sidewall; Described elastomer layer adopts nitrile butadiene rubber, and described seal layer adopts nylon.
Deadweight safety valve valve core rod sealing as above, wherein, described seal layer adopts nylon PA12.
Deadweight safety valve valve core rod sealing as above, wherein, the angle of described chamfering is: 15-30 °.
In sum, owing to have employed technique scheme, the utility model solves deadweight safety valve valve core rod in prior art and is sealed in the working environment come and gone at a high speed, friction produces higher heat, wear no resistance, the problem that life-span is short, by adopting the elastomer layer of nitrile rubber and adopting the seal layer of nylon material, and arranges chamfering and realizes good sealing and durable use on close elastomer layer.
Accompanying drawing explanation
Fig. 1 is the structural representation of deadweight safety valve valve core rod sealing in prior art;
Fig. 2 is the structural representation of the utility model deadweight safety valve valve core rod sealing.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 2 is the structural representation of the utility model deadweight safety valve valve core rod sealing, refer to Fig. 2, a kind of deadweight safety valve valve core rod sealing, wherein, comprise: a core bar, core bar is arranged with a seal layer 2, seal layer 2 outer wall is arranged with an elastomer layer 1, there is between elastomer layer 1 outer wall and sidewall chamfering 3; Elastomer layer 1 adopts nitrile butadiene rubber, and seal layer 2 adopts nylon.
Seal layer 2 of the present utility model adopts nylon PA12.Elastomer layer 1 has excellent noise and vibration damping, under dry operating condition, and the wearability low, excellent to the coefficient of sliding friction of steel, POM, PBT and other materials and high volume stability.The elasticity of bound rubber material, with the wear-resistant resistance to compression of nylon material, sealing effect is good, can work under the working environment come and gone at a high speed, and in sealing using process, if seal layer 2 weares and teares, certain compensation can be given by elastomer layer, compare conventional seals working life and improve 5-7 doubly.The chamfer angle of elastomer layer 1 can be 15-30 °, when can ensure that sealing is installed, and groove of fitting completely, very close to each other.
Claims (3)
1. a deadweight safety valve valve core rod sealing, is characterized in that, comprising: a core bar, described core bar is arranged with a seal layer, described seal layer outer wall is arranged with an elastomer layer, has chamfering between described elastomer layer outer wall and sidewall; Described elastomer adopts nitrile butadiene rubber, and described seal adopts nylon.
2. deadweight safety valve valve core rod sealing according to claim 1, it is characterized in that, described seal adopts nylon PA12.
3. deadweight safety valve valve core rod sealing according to claim 1, it is characterized in that, the angle of described chamfering is: 15-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735600.8U CN204358237U (en) | 2014-12-01 | 2014-12-01 | Deadweight safety valve valve core rod seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735600.8U CN204358237U (en) | 2014-12-01 | 2014-12-01 | Deadweight safety valve valve core rod seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204358237U true CN204358237U (en) | 2015-05-27 |
Family
ID=53259707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420735600.8U Expired - Fee Related CN204358237U (en) | 2014-12-01 | 2014-12-01 | Deadweight safety valve valve core rod seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204358237U (en) |
-
2014
- 2014-12-01 CN CN201420735600.8U patent/CN204358237U/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: 20150527 Termination date: 20181201 |