Importance

Loading Importance Indicators...

Abstract

A drum centrifuge has a housing, a drum in the housing, an axially extending outer foraminous side wall in the interior of the drum forming an outer chamber, and a transversely extending foraminous end wall in the drum forming a bypass chamber radially inward of the outer chamber. A suspension is fed to the interior of the drum while same is rotating so that the suspension is thrown centrifugally against the outer wall and separates into a radially outer body of filter cake having an inner surface and a radially inner body of liquid sitting on the inner surface. A drainage chamber is formed at the end wall and a drain passage extends between the drainage chamber and the outer chamber while a bypass passage extends between the drain chamber and the bypass chamber. A float valve in the passage is radially displaceable when a liquid level in the passage rises radially inward above a predetermined level between a radially outer position blocking flow through the passage and a radially inner position permitting flow through the passage. A dip tube is radially displaceable in the drain chamber between a radially outer position maintaining the liquid level in the drainage chamber and in the passage radially outward of and below the predetermined level and a radially inner position allowing the liquid level in the drainage chamber and passage to rise radially inward above the predetermined level and thereby open the float valve.

Loading the Abstract Image...

First Claim