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CN203335404U - 一种爪型干式真空泵用复合密封 - Google Patents

一种爪型干式真空泵用复合密封 Download PDF

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Publication number
CN203335404U
CN203335404U CN2013202657165U CN201320265716U CN203335404U CN 203335404 U CN203335404 U CN 203335404U CN 2013202657165 U CN2013202657165 U CN 2013202657165U CN 201320265716 U CN201320265716 U CN 201320265716U CN 203335404 U CN203335404 U CN 203335404U
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seal
boss
oil sealing
skeleton oil
lug boss
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马基刚
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ZIBO ZEYI VACUUM EQUIPMENT Co Ltd
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ZIBO ZEYI VACUUM EQUIPMENT Co Ltd
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Abstract

本实用新型一种爪型干式真空泵用复合密封,属于机械制造领域。由轴、轴套、凸台、凸台密封、上骨架油封、下骨架油封、注黄油孔组成;轴套套在轴上,凸台过盈装配在排气板工作面上,凸台密封位于凸台上面轴套外侧,注黄油孔位于凸台密封与上骨架油封之间,与凸台相连接,上骨架油封和下骨架油封位于凸台下面,下骨架油封位于上骨架油封下面,上骨架油封与下骨架油封唇与唇对着装配;本密封也可用于别的泵,密封效果好,寿命长,接近十年,具有良好的市场前景。

Description

一种爪型干式真空泵用复合密封
技术领域
本实用新型涉及一种爪型干式真空泵用复合密封,属于机械制造领域。 
背景技术
当前,爪型干式真空泵中高压端与油箱之间使用的密封大都是骨架油封、机械密封或活塞环复合密封。此密封用在爪型干式真空泵上的缺点是,不适合此泵的工作场合,骨架油封和机械密封在高速旋转下遇到杂质,长时间运转,极易损坏。即使用活塞环复合密封也不能胜任这种泵的工作环境,因为泵压缩排气的过程中泵内气体容易液化,液体和杂质会顺着类似活塞环原理密封的零件进入到油箱,污染油箱内的润滑油,造成泵寿命缩短。爪型干式真空泵高压端与油箱之间密封问题,成为本领域技术人员急待解决的一个技术问题。 
发明内容
本实用新型的技术目的是设计一种适合爪型干式真空泵中高压端与油箱之间密封的复合密封,解决目前此处密封易损坏的现象,提供一种在使用过程中不易损坏,适合爪型干式真空泵泵工作场合的复合密封。 
为实现以上技术目的,本实用新型一种爪型干式真空泵用复合密封的技术方案是:由轴、轴套、凸台、凸台密封、上骨架油封、下骨架油封、注黄油孔组成;轴套套在轴上,凸台过盈装配在排气板工作面上,与转子内孔之间有一定间隙。凸台密封位于凸台上面轴套外侧,注黄油孔位于凸台密封与上骨架油封之间,与凸台相连接,上骨架油封和下骨架油封位于凸台下面,下骨架油封位于上骨架油封下面,上骨架油封与下骨架油封上下并行装配,上骨架油封从注黄油孔注入的黄油得到润滑,下骨架油封依靠齿轮箱内甩起的真空油得到润滑。当泵工作的时候在高速旋转下,凸台与转子之间形成间隙密封,工作腔内的气体、液体和杂质不能通过突出的台阶进入到下面的密封部位,上骨架油封与下骨架油封长期得到润滑不易损坏,起到良好的密封作用,并且即使在骨架油封密封面被磨损到临界状态的情况后,气体通过的流导依然非常小,其泄露依然在可以接受的范围。 
有益效果:本实用新型一种爪型干式真空泵用复合密封有如下优点:提供一种在使用过程中不易损坏,适合爪型干式真空泵复杂的场合使用,本密封也可用于别的泵,密封效果好,寿命长,接近十年,具有良好的市场前景。 
附图说明
图1为本实用新型一种爪型干式真空泵用复合密封结构示意图。由轴1、轴套2、凸台3、凸台密封4、上骨架油封5、下骨架油封6、注黄油孔7组成。 
具体实施方式
下面结合附图对本实用新型一种爪型干式真空泵用复合密封做进一步说明。 
本实用新型一种爪型干式真空泵用复合密封,由轴1、轴套2、凸台3、凸台密封4、上骨架油封5、下骨架油封6、注黄油孔7组成;轴套2套在轴1上,凸台3过盈装配在排气板工作面上,与转子内孔之间有一定间隙。凸台密封4位于凸台3上面轴套2外侧,注黄油孔7位于凸台密封4与上骨架油封5之间,与凸台3相连接,上骨架油封5和下骨架油封6位于凸台3下面,下骨架油封6位于上骨架油封5下面,上骨架油封5与下骨架油封6上下并行装配,上骨架油封5从注黄油孔7注入的黄油得到润滑,下骨架油封6依靠齿轮箱内甩起的真空油得到润滑。当泵工作的时候在高速旋转下,凸台3与转子之间形成间隙密封,工作腔内的气体、液体和杂质不能通过突出的台阶进入到下面的密封部位,上骨架油封5与下骨架油封6长期得到润滑不易损坏,起到良好的密封作用,并且即使在上骨架油封5与下骨架油封6面被磨损到临界状态的情况后,气体通过的流量依然非常小,其泄露依然在可以接受的范围。 

Claims (1)

1.一种爪型干式真空泵用复合密封,其特征在于由轴(1)、轴套(2)、凸台(3)、凸台密封(4)、上骨架油封(5)、下骨架油封(6)、注黄油孔(7)组成;轴套(2)套在轴(1)上,凸台(3)过盈装配在排气板工作面上,凸台密封(4)位于凸台(3)上面轴套(2)外侧,注黄油孔(7)位于凸台密封(4)与上骨架油封(5)之间,与凸台(3)相连接,上骨架油封(5)和下骨架油封(6)位于凸台(3)下面,下骨架油封(6)位于上骨架油封(5)下面,上骨架油封(5)与下骨架油封(6) 上下并行装配。
CN2013202657165U 2013-05-16 2013-05-16 一种爪型干式真空泵用复合密封 Expired - Lifetime CN203335404U (zh)

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