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2. 发明公开

EP2871362A1 A reciprocating positive-displacement diaphragm pump for liquids 有权
标题翻译：用于液体的往复式容积式隔膜泵
公开(公告)号：EP2871362A1
公开(公告)日：2015-05-13
申请号：EP14187054.3
申请日：2014-09-30
申请人： Imovilli Pompe S.R.L.
发明人： Bertazzoni, Antonio
IPC分类号： F04B43/00 , F04B43/067 , F04B43/073 , F04B53/18
CPC分类号： F04B43/067 , F04B43/0081 , F04B43/0736 , F04B53/18
摘要： The pump comprises at least a piston-cylinder group, having a liquid pump chamber (30), and a piston-cylinder pair. A flexible diaphragm (35) separates the pump chamber (30) from the cylinder mouth (31), which is connected to the front thrust surface of the piston (32); a thrust chamber (37), external of the pump chamber (30), is delimited between the diaphragm (35), the thrust surface of the piston (32) and the guide surface (31 b) of the cylinder, and is sealedly closed and filled with non-compressible thrust oil. The rear tank is delimited on the front transversal side by the piston and on the lateral side by a tubular lateral wall (41), comprising a front portion having an internal surface which defines the cylindrical guide surface (31 b) for the piston (32) and a rear portion (41 a) joined to the front portion. To restore the thrust oil level, lost by leakage from the thrust chamber to the rear tank, the tubular wall 41 comprises at least an open-topped groove (31 b), and facing the lateral surface (32b) of the piston, which develops substantially axially, having a rear end connected to the rear tank (40) and a front end that when the piston (32) is in the environs of the bottom dead centre, opens frontally of the front seal edge (33a) and communicates with the thrust chamber (37).
摘要翻译：该泵包括至少一个具有液体泵室（30）和活塞 - 缸体对的活塞 - 缸组。柔性隔膜（35）将泵室（30）与连接到活塞（32）的前推力表面的缸口（31）分开; 在泵室30外部的推力室37在隔膜35，活塞32的推力面和气缸的导向面31b之间界定，并被密封地关闭并充满不可压缩的推力油。后罐在前横向侧由活塞限定并且在侧面由管状侧壁（41）限定，该管状侧壁包括具有内表面的前部，该内表面限定用于活塞（32）的圆柱形引导表面（31b））和接合到前部的后部（41a）。为了恢复由推力室泄漏到后部罐的推力油位，管状壁41包括至少一个敞开的顶部凹槽（31b）并面向活塞的侧面（32b），该侧面基本上轴向地具有连接至后部箱体（40）的后端和当活塞（32）位于下止点的周围时前端开口于前密封边缘（33a）并且与前部密封边缘推力室（37）。

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