CN204312731U - 氮封阀 - Google Patents
氮封阀 Download PDFInfo
- Publication number
- CN204312731U CN204312731U CN201420767927.3U CN201420767927U CN204312731U CN 204312731 U CN204312731 U CN 204312731U CN 201420767927 U CN201420767927 U CN 201420767927U CN 204312731 U CN204312731 U CN 204312731U
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- Prior art keywords
- valve
- pilot
- rod
- valve rod
- groove
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- Expired - Fee Related
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- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
一种氮封阀,包括阀体、阀座、阀杆、阀盖、螺母、垫圈、指挥器阀座、指挥器阀杆,其主要技术特征是指挥器阀杆的直杆与导向之间开一槽,槽内设O型密封圈。本实用新型在指挥器阀杆的杆与导向之间开槽,加装O型密封圈。使阀杆改为快开式,避免轴直接通入阀座,从而大大提高阀门反应时间以及控制精度。
Description
技术领域
本实用新型涉及一种氮封阀,特别是指氮封阀的指挥阀的密封结构的改进。
背景技术
氮封阀主要用于化工行业的有机溶剂挥发性介质与空气相隔绝,用氮气来饱和,形成一个氮气保护膜,从而确保环境保护。氮封阀的指挥阀原来是传统的线性密封,造成阀门压力低、精度高,控制难度大,压力在0.5kpa左右反应慢等缺点。
发明内容
本实用新型提供一种提高阀门反应时间和控制精度的氮封阀。
本实用新型是通过如下技术方案来实现的:一种氮封阀,包括阀体、阀座、阀杆、阀盖、螺母、垫圈、指挥器阀座、指挥器阀杆,其主要技术特征是指挥器阀杆的直杆与导向之间开一槽,槽内设O型密封圈。
本实用新型在指挥器阀杆的杆与导向之间开槽,加装O型密封圈。使阀杆改为快开式,避免轴直接通入阀座,从而大大提高阀门反应时间以及控制精度。
附图说明:
图1为本实用新型的结构示意图;
图2为指挥器阀杆的结构示意图。
具体实施方式:
如图1、图2所示,本氮封阀,包括阀体1、阀座2、阀杆3、阀盖4、螺母6、垫圈5、11、指挥器阀座7、指挥器阀杆8,指挥器活塞9,在指挥器阀杆的直杆与导向之间开一槽12,槽内设O型密封圈10。
本实用新型在指挥器阀杆的杆与导向之间开槽,加装O型密封圈。使阀杆改为快开式,避免轴直接通入阀座,从而大大提高阀门反应时间以及控制精度。
Claims (1)
1.一种氮封阀,包括阀体、阀座、阀杆、阀盖、螺母、垫圈、指挥器阀座、指挥器阀杆,其特征在于指挥器阀杆的直杆与导向之间开一槽,槽内设O型密封圈。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420767927.3U CN204312731U (zh) | 2014-12-09 | 2014-12-09 | 氮封阀 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420767927.3U CN204312731U (zh) | 2014-12-09 | 2014-12-09 | 氮封阀 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204312731U true CN204312731U (zh) | 2015-05-06 |
Family
ID=53135049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201420767927.3U Expired - Fee Related CN204312731U (zh) | 2014-12-09 | 2014-12-09 | 氮封阀 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN204312731U (zh) |
-
2014
- 2014-12-09 CN CN201420767927.3U patent/CN204312731U/zh 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: 20150506 Termination date: 20201209 |