Axial or worm-type centrifugal impeller pump

The pump of the present invention has a housing which accommodates an axial impeller set on the pump drive shaft. The impeller has a hub which carries a number of the helical impeller blades held in position thereto and defining a plurality of blade channels for the liquid being handled to pass. An...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KUNETS, VLADIMIR K, KUDIAROV, VLADIMIR N, KUSHNIR, GEORGY M, SHAPIRO, ANATOLY S, KALASHNIKOV, LEONID F, KONSTANTINOV, RJURY I, NIKOLAEV, VADIM V
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NON-POSITIVE DISPLACEMENT PUMPS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The pump of the present invention has a housing which accommodates an axial impeller set on the pump drive shaft. The impeller has a hub which carries a number of the helical impeller blades held in position thereto and defining a plurality of blade channels for the liquid being handled to pass. An additional intake axial impeller with the helical impeller blades is set on the pump drive shaft before the axial impeller as viewed in the direction of liquid flow, said additional intake axial impeller having its outside diameter smaller than the outside diameter of the axial impeller, and the lead of helix of the impeller blades thereof is lower than the lead of helix of the impeller blades of the axial impeller at the entry thereof, while the ratio between the outside diameter of the additional intake axial impeller and the outside diameter of the axial impeller, and the ratio between the lead of helix of the impeller blades of the additional intake axial impeller and the lead of helix of the impeller blades of the axial impeller across the outside diameter of both respective impellers are selected so as to provide for high pump suction capacity.