SU919754A1 - Screen - Google Patents

Description

(54) IPOXOT

The invention relates to the separation of materials, namely, screening, and. Can be used in industrial building materials, chemical, industrial ore and {fugue industries)). Vibroscopic fiber is known, including a flat sieve, in the form of a movable frame with nat. On it, rubber cords, a body and a vibrating drive of an arm type, connecting the movable frame with the engine, 1 The disadvantages of the screen noise are high dynamism, difficulty of securing and tensioning the cables in the ground. Their wear and tear in the process of scrottling. The closest to the technical aspect of the invention is a screen comprising an annular sieve, tensioned onto supporting pulleys connected to the screen body, vibrators and an electromechanical actuator. The sieve has been spliced with perforated lbnt. Oaor pulleys are levers, connected to the body of the eccentric vibrators, and the drive contains a electric rotor, a gearbox and chain transmissions from the gearbox to eccentric lamas. The advantage of screening is to provide screening and unloading due to oscillating and lily circular motion of the sieve, as well as a slight reduction of the dynamic loads on the drive due to the small inertial oHHociia frameless sieve 2}. The disadvantage of the total screen is the low efficiency of 1 x rho {v1 because of the low frequency of eccentric vibrators on a single screen in one mode, the purpose of the invention is to increase the efficiency of the screen. The goal achieved is due to the performance of the Vibro gzzhk elements in the form of a pattern. with elastic shells supported on them, there are many watershed waters inside the shell. On discs with the aid of the axles, the installers are installed with the possibility of growth and contact with elastic shells of the roller0. The pulleys consist of oskregnye rings V1lkh sections, interconnected between themselves by external eyelets, spacers and through-bolts. To create a transverse undulating movement of the screening surface, adjacent discs are installed with a phase shift. In addition, the screening surface is made of flexible strings. FIG. 1 shows a roar, a common type of FIG. 2, an electromechanical driven screen; Fig. 3 is a section A-A in Fig. 1; Fig. 4; a diagram of the displacement of adjacent discs in the phase of rotation; I DoxoT consists of an annular sieve 1, support bars 2 and 3 connected to the screen of the screen 4, vibrators 5 and 6 and an electromechanical drive 7, Ring sieve I is formed by flexible strings 8 closed and parallel to each other, coupled with pulleys 2 and 3 by means of elastic shells 9 and 10, Each of the vibrators represents disk carriers 11 and 12, carrying rollers 13 , xi clocked with elastic shells 9 and 10, Each pulley 2 or 3 is composed of discrete ring sec 14, provided with outer lugs 15. Sections 14 clamps / eyelets, spacers 16 and through bolts 17, End sections of pulley section 2, flanges 18 are attached to the body 4 of the screen and pressed with bearing supports for shafts 19 and 2O drove 11 and 12, On shafts 19 and 20 are fixed disks 21c axles 22, on which the rollers 13 placed between the sections of the drums are freely mounted. The end sections of the pulley 3 are connected to the body 4 by a spring device 23 for tensioning the sieve. The elastic shells 9 and 10 are in contact with the ring sections along the cidandrich surfaces of radius Rd n with the rollers 13 of the selection disk 2 1 along discrete arcs with the radius r of the roller, the axes 22 of the rollers 13 are evenly placed on the disks 21 around the radius R in accordance with with an angle of 1 orienting them to a disk such that. where Z is the number of single disc rollers. The period of contact of one roller with the sieve strings between the entrance and exit of contact with them through the elastic shell is determined by the angle 2d. The total angle of the arcs of contact of the elastic ring with the fixed ring sections S6 2 (jr- (i). The axes of the rollers 13 of the outermost discs 21 coincide, and a group of rollers of an average disk 2 I drove rotated. Relatively extreme, at an angle f (cm, fig 4), Drive 7 of the screen consists of an asynchronous electric motor M, two couplings 24 and 25, a composite transmission shaft 26-27 and two conical gears - cottages 28 and 29 with the same gear ij, Clutch .25 can compensate for axial displacement of segment 27 of your transmission when moving the support pulley 3 under the action of the spring device 23 (figs, I and 2Jf, CoDil 11 and 12 with fixed drums 2 and 3, elastic shells 9 and Yu and an annular sieve - I form a wave transmission by a flexible coupling between parallel shafts 19 and 29, providing, with the in-phase rotation of these shafts, a slowed-down circular movement of cables 8 with a skull Ural and the necessary transverse oscillations with amplitude hell and high frequency from high-speed carrier 11 and 12, Groh t is equipped with a hopper 30 and a discharge divider 31, the source material enters the hopper 30 (along arrow I) on the upper branch of the sieve I, the rotation of the electric motor M with an angular velocity tUg through the transmission shaft 26-27, couplings 24-25 and gear pairs 28- 29 is transmitted to the drive shafts 19 and 20 of the vibrators 5 and 6, and the shafts 19 and 2 o rotate clockwise at in-phase speed u) g. Together with these shafts 1, the disks 21c are driven by the rollers 13 of both drove 11 and 12 vibrators 5 and 6, the rollers 13 deform the elastic shells 9 and 10, as well as the flexible strings 8 and create an elastic bluff madia wave, causing the bridges 9 and 10 with the strings to roll over "The end sections of the 14 reels of the stationary pulleys 2 and 3 with a slow speed Vd, which is defined by the expression VAf, where UJ (j, is the fictitious growth rate of the dummy pulley with a radius of the Russian Federation, and the prim WA is 59 transfer from carrier to dummy pulley: V.P.- 2uV Hz uV ABC - AC (see FIG, I),; YO the outer radius of the annular section of the pulley. If you take the R 150 MMJ 2 6: 1 radius of the war R BUT mm; radius of the roller is 45 mm, then do (from graphical constructions). Get a31-150. The frequency of vertical oscillations of transverse vibration of danth is given by the formula Pb-.sor for the final example.

The amplitude of the vertical vibrations of the strings (Fig, 1)

  (.R) - 0 () -150 5 mm ,.

All given average data of parametrovshd, i, R, R, g, Ud. P. “l are quite acceptable for screening modes used by the TFI material classification,. The thrust ability of the screen, like the conveyor, is limited by the total angle of the circumference of the elastic rings of the drums. dt -l-Z / l- © - - 1a f20 °, which is also quite acceptable for the actual construction of the rumble. Due to the vibration of the sieve 1 with amplitude o (ln frequency P, the incoming material is divided into two classes, the smaller class is sifted through the sieve in the direction of the arrow Wg (FIG. 1) and unloaded with the pao-i secant 31, not falling on the bottom sieve branch 1, a larger class (above-grate) is unloaded from grsko.ta through the leading vibrator 6 in the direction of arrow II (fig. 1) with an average speed V, Thus, the design of the proposed grocott with vibratsphs in the annulus of multi-rifle carriers in combination with non-moving pulleys provides a better way effektivnost- The screening by the high frequency vibrating and sekpnonnost uprugih.obolochek, vnbrvruyushyus with 10 mm

The use of a flexible transmission (rubber cables) as a constructive basis for the wave transmission allows us to simplify the design of the vibrator drive to reduce its intensity and increase the reliability of operation. 4 by shifting in phase relative to each other (across the width of the city) intensifies the process of screening. In addition, the execution of flexible strings in the form of closed rings simplifies their installation on the roar and facilitates the replacement of worn out strings, the Circle Ovizheshte strings make them each other a mutual mat. the most intense zones of the abraagon and nose along the length of the sieve. Crumbling screen provides the first possibility of multifactor selection of variable parameters, R, f: о С, do, phase angle of vibrating to determine the optimal factors for screening performance, longevity of the signal, etc., d, this connection can be used as a bench stand for the performance of the screen. studies of vibration processes of screening materials of various lumpiness, dispersion and abrasiveness. The formula of the invention 1, the roar, which includes vibrating elements j on which the infinite sifting of the canvas is stretched, and the mode, which is caused by the fact that, with the improvement of the efficiency of the turning, the rotary elements are made in the form of wattle-like pulleys worn on them. elastic shells, inside of which are installed multidisc carrier, and on the pussies by means of the axles rollers 2 are installed with the possibility of rotation and „contact with elastic shells, crashing according to n, I, w t and h that the pulleys are made of fenced sections made with lugs and mounted in a coaxial manner, with the lugs of adjacent annular sections being interconnected by spacers with through-bolts. 3, Grgot according to claim 1, characterized in that adjacent discs are mounted with a mixture of & phase rotation, .4, according to claim 1, 1, which is sifted with a polishing screen.

79197548

but formed by parallel tsrugo tsuguI, the Author sviaetsgvo USSR

flexible strings, № 399254, class VO 1/12, 1971.

Sources of information, No. 521О27, cl. B 07 H 1 / W, 1970

taken into account in examination 5 (prototype).

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Claims (4)

Claim 1. A screen, including vibro-pulling elements, on which an endless screening screen is stretched, and a drive, from-? kicking by the fact that, in order to increase the efficiency of screening, the vibration-pulling elements are made in the form of fixed pulleys with elastic shells put on them, inside of which multi-disk carriers are installed, and on the disks, by means of axes, they are mounted for rotation and. contact with the elastic shells of the rollers. 2. Rumble on π. 1, due to the fact that the pulleys consist of annular sections made with eyes and installed coaxially, the eyes of adjacent annular are interconnected by spacer through bolts. with sections of svyatvtulkami and tea - 3. There is a rumble on π, 1, on the basis of the fact that adjacent disks are mounted with a phase displacement, .4, Rumble on π, 1, on a join and with that what sifting blades55 7 919754 but formed by parallel flexible strings.