VIBRATORY SCREEN Russian patent published in 2002 - IPC

FIELD: mining, construction and other branches of industry. SUBSTANCE: vibratory screen has frame, box-shaped casing mounted on frame, and vibratory exciter. At least one screening member made from flexible material is located in casing. Each screening member is composed of at least two rectangular sections arranged in imaginary broken line inscribed along generatrix arc and made in the form of regular or irregular polygon. Inclination angle of discharge section is multiple of five and makes β₁=(1-3)x5 deg, and inclination angles of subsequent sections make β_n = β_n-1+β₀, where β₀ is whole number of from 2 to 10 deg. Length of each section is equal to 1=2Rxsin 180 deg/n, where R is radius of generatrix arc of screening surface; m, n is number of sections of screening member. Vibratory screen of such construction is used for size separation of abrasive lump materials. EFFECT: increased efficiency in separating high-abrasive ground materials and simplified construction. 5 cl, 5 dwg