SU1450888A1

SU1450888A1 - Screen sieve

Info

Publication number: SU1450888A1
Application number: SU864152656A
Authority: SU
Inventors: Владимир Федорович Слесаренко; Леонид Абрамович Вайсберг; Ольга Алексеевна Вяльцева; Николай Григорьевич Картавый; Анатолий Данилович Бардовский; Толубай Омаров; Ольга Анатольевна Лукина
Original assignee: Московский Горный Институт
Priority date: 1986-11-26
Filing date: 1986-11-26
Publication date: 1989-01-15

Abstract

Изобретение относитс к устр-вам дл разделени сыпучих материалов и м.б. использовано в горнорудной, металлургической , химической пром-сти и в пром-сти стройматериалов. Цель изобретени - повьшение эффективности просеивани за счет наложени дополнительных колебаний на эластичные элементы (Э). Просеивающа пойерх- ность выполнена в виде эластичных Э1, установленных перпендикул рно направлению движени материала. Концы 31 закреплены на продольных опо-, pax рамы 2 с предварительным нат жением . В соосных отверсти х 3 Э1 установлены дополнительные опоры, расположенные параллельно продольным опорам тросов 4. Один конец каждого троса 4 прикреплен к раме 2, другой - к нат жному приспособлению. Предварительное нaт жe шe тросов 4 определ етс по цриведенной в изобретении . Вынужденные колебани рамы 2 вызывают колебани Э1 и отрезков троса 4. Последние, начина с крайнего , поочередно колеблютс со сдвигом фаз. Образуетс сложное волнообразное поле колебаний Э1, которое интенсифицирует процесс классификации . 1 з.п. ф-лы, 3 ил, а олThe invention relates to a device for separating bulk materials and m. used in the mining, metallurgical, chemical industry and in the industry of construction materials. The purpose of the invention is to increase the efficiency of sifting by imposing additional vibrations on the elastic elements (E). The sifting surface is made in the form of elastic E1, installed perpendicular to the direction of movement of the material. The ends 31 are fixed on the longitudinal support pax frame 2 with pre-tensioning. In the coaxial holes 3 E1, additional supports are mounted parallel to the longitudinal supports of the cables 4. One end of each cable 4 is attached to the frame 2, the other end to the tension device. Preliminary on the gears 4 is determined according to the invention. The forced oscillations of the frame 2 cause oscillations of the E1 and the lengths of the cable 4. The latter, starting from the outermost one, alternately alternate with a phase shift. A complex wave-like E1 oscillation field is formed, which intensifies the classification process. 1 hp p-ly, 3 silt, and ol

Description

e/afe / af

Claims

The claims where p = - is the dimensionless vibration frequency of the cables;

P is the natural frequency of vibration of the cables, s * ';

ω - forced frequency 1 - cable ban, s- '; cable length, m; m - linear mass cables, kg / m; 45 F - transverse area sec- wire rope, m-; and. - relative value 0 oscillation amplitudes wire rope m; fifty E - cable elastic modulus, n / m ¹

and adjacent cables with the possibility of oscillation in antiphase, the ratio of the frequencies of natural and forced vibrations of 55 vibrations of adjacent cable segments, starting from the extreme ones, is determined in the following sequence:

1 . Screen sieve, including a screening surface made in the form of elastic elements perpendicular to the direction of movement of the material, the ends of which are fixed in the longitudinal supports of the frame perpendicular to them, additional supports made in the form of cables arranged parallel to the longitudinal supports, each of which is attached at one end to the frame, and others - to a tensioner, characterized in that, in order to increase the sieving efficiency by imposing additional vibrations on the elastic element In elastic elements are made coaxial holes in which are installed cables.

2, Sieve pop. ^ Distinguishing with the fact that the cables are installed with the possibility of preliminary ·

3 1450888 tension T _Q defined by the formula

T. -fM * 'p- I- and5], dimensionless vibration frequency of the cables, s ^-1 ;

natural frequency of vibration of cables, s'¹;

forced vibration frequency of cables, s- ’;

P where γ = - ’ω

P ω 1 - the length of the cables, m;

m is the linear weight of the cables, kg / m;

E is the modulus of elasticity of the cables, N / m ¹ ;

F is the cross-sectional area of the cable, m ² ;

U _o - the relative amplitude of the vibration of the cables, m, and adjacent cables with the possibility of oscillation in antiphase "