公开(公告)号：EP1117935A1

公开(公告)日：2001-07-25

申请号：EP99970154.3

申请日：1999-09-22

申请人： TUCHENHAGEN GmbH

发明人： STAHLKOPF, Ralf

IPC分类号： F04D29/70 ,  F16K51/00 ,  F16K27/07

CPC分类号： F16K27/07 ,  F04D29/708 ,  F05B2260/602 ,  F16K51/00

摘要： The invention relates to an aseptic pump housing with switchable drainage, especially for an impeller housing or spiral housing or for a housing of a centrifugal pump for delivering liquids under aseptic or at least sanitarily proper conditions, said housing forming a vaneless annulus. The inventive pump housing is designed such that it does not have sump and clearance volume in the area of the drainage discharge and such that it can be emptied without leaving any residual matter. To this end, the end of the drainage opening (1b) which is situated on the side of the pump housing merges into a seating (1c), and a closing element (2a) is provided which interacts with the seating (1c) thus closing the drainage opening (1b) and, when in the closed position thereof, closes with the inner wall of the pump housing (1) in a manner which is flush and free of clearance volume.

公开(公告)号：EP1117935B1

公开(公告)日：2003-05-21

申请号：EP99970154.3

申请日：1999-09-22

申请人： TUCHENHAGEN GmbH

发明人： STAHLKOPF, Ralf

IPC分类号： F04D29/70 ,  F16K51/00 ,  F16K27/07

CPC分类号： F16K27/07 ,  F04D29/708 ,  F05B2260/602 ,  F16K51/00

摘要： The invention relates to an aseptic pump housing with switchable drainage, especially for an impeller housing or spiral housing or for a housing of a centrifugal pump for delivering liquids under aseptic or at least sanitarily proper conditions, said housing forming a vaneless annulus. The inventive pump housing is designed such that it does not have sump and clearance volume in the area of the drainage discharge and such that it can be emptied without leaving any residual matter. To this end, the end of the drainage opening (1b) which is situated on the side of the pump housing merges into a seating (1c), and a closing element (2a) is provided which interacts with the seating (1c) thus closing the drainage opening (1b) and, when in the closed position thereof, closes with the inner wall of the pump housing (1) in a manner which is flush and free of clearance volume.

公开(公告)号：EP1053402B1

公开(公告)日：2002-08-21

申请号：EP98966841.3

申请日：1998-12-21

申请人： TUCHENHAGEN GmbH

发明人： STAHLKOPF, Ralf

IPC分类号： F04D29/22

CPC分类号： F04D29/2266 ,  F04D29/2216 ,  F05B2230/601

公开(公告)号：EP1053402A1

公开(公告)日：2000-11-22

申请号：EP98966841.3

申请日：1998-12-21

申请人： TUCHENHAGEN GmbH

发明人： STAHLKOPF, Ralf

IPC分类号： F04D29/22

CPC分类号： F04D29/2266 ,  F04D29/2216 ,  F05B2230/601

摘要： The invention relates to a centrifugal pump impeller having a radial structure which combines the advantages of a fully open pump impeller and a closed one, is substantially free from axial flow forces and in which the input conditions and therefore the suction characteristics are improved further in relation to known centrifugal pump impellers. To this end the invention provides for the covering disk segments (4.1; 4.3; 4.5; ...; 4.n-1) and rear side segments (4.2; 4.4; 4.6; ...; 4.n) to each have a through hole (4.1a; 4.3a; 4.5a; ...; 4.n-1a or 4.2a; 4.4a; 4.6a; ...; 4.na). All of said through holes start at an internal diameter defined by a radial formed hub (2a) which is outermost viewed in a radial direction and situated in the input area of the blade channels, and extend radially outwards.