| 摘要 |
A centrifugal separator for gold or the like is of the type in which a bowl is rotated at high speed so that materials fed into the bowl pass over the peripheral wall of the bowl to an open mouth. On the inner surface of the bowl is provided a series of ribs defining peripheral recesses in which the heavy material is collected. An outer shell surrounds the bowl and defines with it a chamber into which water is injected to pass through openings at the base of the recesses to fluidize the material within the recesses. The outer shell has a peripheral wall of increasing diameter toward the open mouth with a plurality of openings being provided in the shell around the open mouth to allow the escape of silt collecting in the chamber. A wear resistant plastics material is attached to the bowl at the open mouth and to a casing surrounding the open mouth to redirect the exiting materials to an outlet duct. A plug for the base of the bowl can be latched into place by a pivotal latch member actuated by centrifugal force caused by rotation of the bowl to prevent loss of the plug under the high forces generated during the rotation. |
