a machine used to separate the products of grain milling by means of flat sieves that make successive circular movements on a horizontal plane. Sifting machines became widespread in the late 19th century; in Russia they were first produced in 1888.
The main parts of a sifting machine are the drive mechanism and the set of sieves mounted in the housing. Machines can have one or two housings, crank or self-balancing drive, and varying numbers of units where different mixtures can be simultaneously separated. The mixture being separated falls from one horizontal or sometimes slightly inclined sieve to another, is sifted, and forms usually from three to six groups, whose particles differ in size.
Sifting machines are used primarily in the processing of flour and groats.
REFERENCESSokolov, A. Ia. Tekhnologicheskoe oborudovanie predpriiatii po khraneniiu i pererabolke zerna, 3rd ed. Moscow, 1967.
Gortinskii, V. V., A. B. Demskii, and M. A. Boriskin. Protsessy separirovaniia na zernopererabatyvaiushchikh predpriiatiiakh. Moscow, 1973.