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公开(公告)号:EP3172405A1
公开(公告)日:2017-05-31
申请号:EP15741279.2
申请日:2015-07-17
申请人: Edwards Limited
CPC分类号: F04C27/02 , F01C19/005 , F01C21/10 , F04C18/126 , F04C23/001 , F04C25/02 , F04C2220/10 , F04C2240/10
摘要: The present invention relates to a multi-stage vacuum pump comprising: first and second half-shell stator components and first and second end stator components which when assembled define a plurality of pumping chambers. The half-shell components are assembled together along respective pairs of mutual engaging longitudinal faces and the end stator components are assembled at the ends of the half-shell components at respective pairs of mutual engaging end faces. A longitudinal channel is counter-sunk in at least one longitudinal face of each pair of mutual engaging longitudinal faces for receiving respective longitudinal sealing members for sealing between the half-shell components. Counter-sunk in at least one longitudinal face of each pair of mutual engaging longitudinal faces is a pocket extending transversely from the longitudinal channel for receiving sealant and allowing sealant to flow around a longitudinal sealing member received in the longitudinal channel for preventing the formation of a leakage path.
摘要翻译: 多级真空泵包括第一和第二半壳式定子部件以及第一和第二端部定子部件,所述第一和第二端部定子部件在组装时限定多个泵送腔室。半壳部件沿着相应的一对相互接合的纵向面12组装在一起,以及 端部定子部件在相应的一对相互接合的端面处组装在半壳部件的端部处。 纵向通道40在每对相互接合的纵向面的至少一个纵向面上反沉,用于接收用于密封半壳部件之间的相应的纵向密封部件34。 在每对相互啮合的纵向面的至少一个纵向面上沉积有凹槽38,凹槽38从纵向通道横向延伸,用于接收密封剂并且允许密封剂围绕容纳在纵向通道中的纵向密封构件流动,以防止形成 一条泄漏路径。