Bird Machine Company

Herbert L Crosby

Jacob P Den Hartog

Chatter is suppressed in a solids-liquid separating centrifuge by including, in an external connection to a holder of the speed change gearing between the centrifuge bowl and conveyor, a spring and mass means which is torsionally resilient about the axis of the connection such that it will vibrate about that axis under chatter conditions at the chatter frequency, together with damping means acting in parallel with the spring and mass means to apply resistance to the torsional vibration thereof and thereby irreversibly extract energy therefrom.

Centrifuge with chatter suppression

Chatter is suppressed in a solids-liquid separating centrifuge by including, in an external connection to a holder of the speed change gearing between the centrifuge bowl and conveyor, a spring and mass means which is torsionally resilient about the axis of the connection such that it will vibrate about that axis under chatter conditions at the chatter frequency, and which has a spring rate within +40% to -25% of the spring rate at which the spring and mass means will vibrate in resonance with the vibration during chatter of the bowl-gearing-conveyor assembly.

A solids-liquid separating centrifuge with bowl and conveyor members rotated about a common axis at a differential speed has means for sensing torsional vibration of at least one of the members about its axis and providing an output representative of the vibration amplitude, and signal means which provides an indicative signal when the output indicates vibration amplitude above a predetermined level. The indicative signal may operate an alarm, or an automated centrifuge throughput reducing system, or both.

Growing community of inventors

Plainville, MA, United States of America

Herbert L Crosby