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1. 发明公开

EP0481598A3 Centrifugal pump with sealing means 失效
标题翻译：离心泵具有密封性
公开(公告)号：EP0481598A3
公开(公告)日：1992-05-06
申请号：EP91308099.0
申请日：1991-09-04
申请人： A. AHLSTROM CORPORATION
发明人： Haavik, Harold , Peroaho, Tapio , Vesala, Reijo , Vikman, Vesa
IPC分类号： F04D7/04 , F04C27/02
CPC分类号： F04C19/00 , F04C27/02 , F04C2220/20 , F04D7/045 , F05B2210/132
摘要： A centrifugal pump for pumping fiber suspensions includes a centrifugal pumping housing (50) having an inlet (52) and an outlet for the suspension and a centrifugal impeller within the centrifugal pump housing. A vacuum pump (70) is placed adjacent the centrifugal pump housing (50) and includes a vacuum pump chamber defined by first and second opposed side walls (110, 112) and a vacuum pump rotor which is eccentrically mounted within the vacuum pump chamber. The rotor has radially extending opposed side edges facing the vacuum pump side walls (110, 112) forming a clearance therebetween. The pump includes a conduit within at least one of the vacuum pump side walls (110, 112) for supplying a sealing liquid to the clearance (122) between the rotor and at least one of the side walls of the vacuum pump chamber (76). Flushing liquid may be supplied through the same sealing liquid conduits or separately therefrom. The centrifugal pump may include a fluidizing impeller.

2. 发明授权

EP0481598B1 Centrifugal pump with sealing means 失效
标题翻译：离心泵密封装置
公开(公告)号：EP0481598B1
公开(公告)日：1996-05-01
申请号：EP91308099.0
申请日：1991-09-04
申请人： A. AHLSTROM CORPORATION
发明人： Haavik, Harold , Peroaho, Tapio , Vesala, Reijo , Vikman, Vesa
IPC分类号： F04D7/04 , F04C27/02
CPC分类号： F04C19/00 , F04C27/02 , F04C2220/20 , F04D7/045 , F05B2210/132

3. 发明公开

EP0481598A2 Centrifugal pump with sealing means 失效
标题翻译： Kreiselpumpe mit Abdichtungsmitteln。
公开(公告)号：EP0481598A2
公开(公告)日：1992-04-22
申请号：EP91308099.0
申请日：1991-09-04
申请人： A. AHLSTROM CORPORATION
发明人： Haavik, Harold , Peroaho, Tapio , Vesala, Reijo , Vikman, Vesa
IPC分类号： F04D7/04 , F04C27/02
CPC分类号： F04C19/00 , F04C27/02 , F04C2220/20 , F04D7/045 , F05B2210/132
摘要： A centrifugal pump for pumping fiber suspensions includes a centrifugal pumping housing (50) having an inlet (52) and an outlet for the suspension and a centrifugal impeller within the centrifugal pump housing. A vacuum pump (70) is placed adjacent the centrifugal pump housing (50) and includes a vacuum pump chamber defined by first and second opposed side walls (110, 112) and a vacuum pump rotor which is eccentrically mounted within the vacuum pump chamber. The rotor has radially extending opposed side edges facing the vacuum pump side walls (110, 112) forming a clearance therebetween. The pump includes a conduit within at least one of the vacuum pump side walls (110, 112) for supplying a sealing liquid to the clearance (122) between the rotor and at least one of the side walls of the vacuum pump chamber (76). Flushing liquid may be supplied through the same sealing liquid conduits or separately therefrom. The centrifugal pump may include a fluidizing impeller.
摘要翻译：用于泵送纤维悬浮液的离心泵包括离心泵壳体（50），其具有用于悬架的入口（52）和出口以及离心泵壳体内的离心式叶轮。真空泵（70）放置在离心泵壳体（50）附近，并且包括由第一和第二相对侧壁（110,112）限定的真空泵室和偏心地安装在真空泵室内的真空泵转子。转子具有面向真空泵侧壁（110,112）的径向延伸的相对侧边缘，在其间形成间隙。该泵包括至少一个真空泵侧壁（110,112）内的导管，用于将密封液体供应到转子与真空泵室（76）的至少一个侧壁之间的间隙（122）。冲洗液体可以通过相同的密封液体管道或与其分开供应。离心泵可包括流化叶轮。

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