Centrifugal pump with twin 180 degree spiral ducts - has bush in housing as inner wall to channel from first duct to outlet common with second

The centrifugal pump with a double spiral housing (1) has each of its two spiral ducts e.g. extending over 180 deg. around the impeller (2) or around the guide vane assembly downstream of the impeller. The pump outlet is at the outer diameter of the housing which is also the diameter of the first sp...

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Bibliographic Details
Main Author KARL-HEINZ BECKER, PETER MILLA, PETER HERGT ET HEINZ-DIETER HELLMANN
Format Patent
LanguageEnglish
French
Published 24.07.1981
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:The centrifugal pump with a double spiral housing (1) has each of its two spiral ducts e.g. extending over 180 deg. around the impeller (2) or around the guide vane assembly downstream of the impeller. The pump outlet is at the outer diameter of the housing which is also the diameter of the first spiral duct at the start of the second cut (4). The first duct connects to the common outlet via one or more passages (6,7) arranged to the side of the duct. The passages (6,7) are formed in the housing as channels which are open in radially inward direction and are sealed (13) by insert bushes (9) secured (12) in the housing. CETTE POMPE EST DU TYPE DONT LE CORPS PRESENTE DEUX VOLUTES OPPOSEES ET MECANIQUEMENT SIMILAIRES DANS LE SENS DE LA SIMILITUDE MECANIQUE.AUTOUR DE LA ROUE MOBILE 2 OU D'UNE ROUE FIXE SITUEE EN AVAL DE CETTE ROUE MOBILE EST DISPOSE UN CORPS 1 A DEUX VOLUTES 3, 5 DONT CHACUNE EMBRASSE UN ANGLE MAXIMAL DE 180, ET LEDIT CORPS 1 PRESENTE UN DIAMETRE EXTERIEUR EGAL A CELUI DE LA PREMIERE VOLUTE 3 AU COMMENCEMENT DE LA SECONDE VOLUTE.
Bibliography:Application Number: FR19810000784