| 摘要 |
<p>A multiple stage centrifugal pump for the handling of slurries. At each stage the slurry enters and is centrifugally discharged from an unobstructed chamber in which a vortex is created by an impeller disposed in a cavity located above the chamber. The various flow passages are such as to minimize clogging under various conditions. Also a method making use of such a pump, the method being characterized by each stage being provided with an unobstructed vortex chamber which receives slurry through an axially disposed inlet, and in which vortical or swirling movement is induced by the operation of an impeller located in a cavity overlying and in communication with the vortex chamber. The material in the vortex chamber is centrifugally discharged and directed to flow upwardly and inwardly, and is discharged in an axial direction into the vortex chamber of the next stage. A bearing lubrication arrangement in which liquid under pressure is continuously being passed through the bearings and discharged into the material being pumped.</p> |
