UDC 637.024
DOI 10.36461/NP.2024.72.4.014

JUSTIFICATION OF THE CRITICAL RADIUS OF THE FAT GLOBULE AND ITS BOUNDARY POSITION ON THE CONICAL PART OF THE SEPARATION DISC OF THE CREAM SEPARATOR
A.V. Yashin, Candidate of Engineering Sciences, Associate Professor;
Yu.V. Polyvyany, Candidate of Engineering Sciences, Associate Professor;
P.N. Khorev, Candidate of Engineering Sciences, Associate Professor; N.S. Chirkova, post-graduate student
Penza State Agrarian University,
Penza, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

To date, cream separators have become widespread in the technological production lines of various dairy products, both in large enterprises and among small business entities. The existing designs of modern cream separators differ in the type of drive, the method of milk supply and discharge of separation products, the design of the drum, discs, etc., but all commercially available cream separators operate on the principle of thin-layer centrifugal separation and have certain disadvantages. The article defines that the boundary position, provided that it is possible to isolate a fat globule of critical radius, is its location on the outer surface of the conical part of the separation disc at the maximum radius, when it is possible to prevent movement along irrevocable trajectories, to keep from demolition and to give the necessary initial impulse to movement to perform the second stage of separation – movement along the outer surface of the conical part of the separation disc to the axis of the drum. Possibility of forming an adsorption layer on the surface of the protein lecithin membrane of the smallest fat globule is considered and a formula is established that makes it possible to determine the critical radius of the fat globule capable of settling on the outer surface of the conical part of the separation disc at its maximum radius, the cream separator. Calculation of the critical radius of a fat globule capable of settling on the outer surface of the separating plate at its maximum radius has established that its value is 0,25∙10^(-6) m.
Keywords: fat globule, separation, cream separator, adsorption layer, separation disc, inter-disc space.

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