Дослідження процесу транспортування сипкого вантажу похилими гвинтовими конвеєрами

Abstract

Розглянуто режим роботи похилого гвинтового конвеєра до складу якого входить гвинтовий робочий орган із постійними параметрами. Із умови контакту виділеного об’єму вантажу з гвинтовою поверхнею шнека та циліндричною поверхнею кожуха її розміщення визначається радіальним параметром R і кутовим параметром θ. Встановлено граничні відхилення швидкостей частинок у процесі транспортування й виведено аналітичні залежності. Виведено аналітичні залежності для визначення кутової й осьової швидкості руху частинок по нахилених поверхнях.

Screw conveyers, which are characterized by the simple design, high reliability, easy handling and adaptation in the automated systems being ecologically-friendly, have been widely used for the technological operations of the bulk-cargo transporting and mixing. To decrease the power consumption and to raise the quality of bulk-cargo mixing some original constructions of screw mixers with the screw operating member have been developed. Application of such screws requires to solve problems dealing with the determination of loadings on the screw operating member and the characteristic of the bulk-cargo movement, as well reasonability of their application. The operating regime of the inclined screw conveyer, which consists of screw operating member with constant parameters, has been analyzed. From the condition of the bulk-cargo particle contact with the screw surface and the case cylinder surface its location is determined by the radial parameter and the angle parameter. Boundary deviations of the particles speeds while transporting have been found and analytical dependences have been deduced. Analytical dependencies for finding angular speed and central speed of the particles movement along the inclined surfaces have been deduced. The proposed method for finding average circular velocity of the particle ω according to the boundary values ω1 and ω2 is characterized by the mathematic clearness and simplicity of realization. Integration dependence has been deduced.