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A Study of a Cream Separator Bowl Which is Cleaned by Centrifugal Flushing

Illinois Agricultural Experiment Station, University of Illinois, Urbana

ABSTRACT

In 1938 the W. and J. Whitehead, Ltd., in Laisterdyke, England, sent a centrifugal cream separator to the Illinois Agricultural Experiment Station. The bowl of this machine was designed to provide cleaning and drying by centrifugal force.¹ In 1945, another Whitehead separator was received by the Experiment Station. Both machines were investigated under various conditions of operation.

PRELIMINARY EXPERIMENTS

Tracy and Tuckey (8) in 1938 conducted a number of experiments with the English machine. The purpose of these early experiments was to study the automatic cleaning principle of this separator and ascertain its practical usefulness under farm conditions. The machine was used on two different farms near the Illinois Agricultural Experiment Station for periods of 5 to 7 days. Its operation also was studied in the dairy laboratories of the Experiment Station and results compared with those of a well-known American separator. The bacterial quality of the cream and skim milk was determined.

¹ The bowl has a specially constructed water distributor which allows cleaning solution to flow from the supply tank to all parts of the bowl while it is in motion. In the shell of the bowl there are three discharge ports, equal distance apart, and each one is closed by a valve which is held in place by a steel spring. The tension in the steel spring is overcome by the centrifugal force so that the ports are tightly closed when the bowl revolves at its normal speed. When the speed slackens to one-half that of normal, the valves open and cleaning solutions can be forced through with turbulent cleaning action.