SU1577881A1 - Screen - Google Patents

Abstract

The invention relates to mining technology and is intended for vibrating screening and sizing by size of various materials in the mining industry. The goal is to increase the efficiency of the screening process by preventing the material from sticking on the transverse beams (PB) 4 of the duct 5. The screen contains a sieve (C) in the form of elastic elements 2 fixed in supports 3, which are mounted on the PB 4 of the duct 5. Between the under-grate surface C Rippers 8 (P) 8 are installed above PB 4 in the places of their interfacing with supports 3. At the same time, P 8 can be made in the form of an elastic element bent in plan with a tubular cross section, mounted on the rigid pins attached to supports 3, or in the form of a plate p A rubber-composite composite oriented with cord yarns along the longitudinal axis of the PB 4. When operating, the P 8 vibrates in a plane perpendicular to the surface C. When performed, C is in the form of elastic elements 2, the oscillation amplitude of which is several times greater than the oscillation amplitude of the duct 5, an intensive classification and self-cleaning of the C is ensured. By dropping the material from the P 8 oscillation zone, the number of collisions of the oversize product with PB 4 is reduced, which reduces their abrasive wear. 2 hp f-ly, 17 ill.

Description

supports 3, which are mounted on PB 4 of box 5, Rippers () 8 are installed between sublattice surface C above PB 4 in the places of their mating with supports 3. At the same time, R 8 mvb0 is made in the form of an elastic element bent in plan with a tubular cross section, mounted on the rigid pins attached to the supports 3 or in the form of a rubber-cord composite plate oriented with cord 12 along the longitudinal axis of the PB 4.

The screen P 8 oscillates in a plane perpendicular to the surface C, When made C in the form of elastic elements 2, the amplitude of oscillations of which is several times greater than the amplitude of oscillations of the box 5, intensive classification and self-cleaning are provided (, С. Thanks to the material being thrown from P 8 decreases the number of collisions of the particles of the superstructure with PB 4, which reduces their abrasive wear. 2 e.p., f-ly, 17 ill.

The invention relates to mining technology, in particular, to vibrating screens used to size various materials, and can be used in the mining industry.

The purpose of the invention is to increase the efficiency of the screening process by preventing material from sticking on the beams.

Figure 1 schematically shows the proposed screen, a longitudinal section; FIG. 2 is a view A of FIG. 1; -. On fig.Z - section bb in figure 1; figure 4-node I figure 3; figure 5 is a section bb In figure 4; Figs. 6, 8 and 9 show the interface assemblies of the supports with the transverse beam, examples of the embodiment of Fig. 7 are the section G-Y of Fig. 6} 10 is a section of D-D. to FIG. 9; on figo - crashj top view; FIG. 12 is a section E — E of FIG. P; in fig. 13 is a section of an LF in FIG. AND; in fig. 14 — node II in FIG. Fig. 15 is a layout diagram of the fixed portions of the elastic members; on Fig - section And-And on Fig; in Fig.17 - section KK in Fig 15.

The screen (Fig. 1) contains a sieve 1 in the form of elastic elements 2 fixed in supports 3, which are mounted on transverse beams 4 of the screen 5 of the screen, vibration exciter 6 and elastic connections 7. In contrast to the prototype between the undersize surface of the sieve 1 and transverse beams 4 placed rippers 8, installed with the possibility of oscillations in the plane xoz (yoz), perpendicular to the surface of the sieve 1, rippers along the length of the screen

They are arranged with a pitch equal to the pitch of the transverse beams 4, and along the width of the screen can be located along the entire length of the beam 4 between the supports 3 or at the junctions of the supports 3 with the transverse beams 4.

The ripper (Figs. 3-5) is made in the form of an elastic element 9 bent in plan with a tubular cross-section fitted tightly on the rigid ones. the pins 10 attached to the supports 3 at the interface nodes of the supports with transverse beams 4,

The ripper, (FIGS. 6-8), can also be made in the form of a plate 11 of a rubber-cord composite oriented with cord yarns 12 along the longitudinal axis of the transverse beam. The plate is mounted on the pin 10, attached to the transverse beam 4 under the support 3, and can also be installed console (console length) under the supports 3 or located along the entire length of the transverse beam (Fig. 08).

In addition, the ripper (FIGS. 9 and 10) can be made in the form of a rigid lever 1.3, reinforced by elastic ties 14 placed under the support 3, the parts of the lever protruding from under the support can be lined with a wear-resistant coating 15,

Ripper screening / Fig, 11-14) can also be made in the form of a string 16, made of elastic material, such as rubber 2959 and mounted on coaxial pins x 10, which are attached to adjacent supports 3f and the axis of the string socket, covering the pin 10 is located with offset e relative to the longitudinal central axis, strings 16.

5.1

The screen operates as follows. Installed on elastic connections x 7 a box 5 of screen and 3 elastic elements fixed in supports 3 sieves under the influence of the disturbing force of the exciter 6 oscillate in the longitudinal and transverse directions ,. Under the influence of the field of vibration forces, the source material supplied to the sieve is continuously moving along the sieve and is divided in the sieve holes (cells) of the sieve in a known manner into the undersize and nesting products. Sieve in the form of elastic elements 2, the amplitude of oscillation A e is several times higher oscillations of the duct (pillars) Ak, provides intensive classification and self-cleaning of the sieve. Under the screen 1, the rippers 8 under the action of the inertial force P oscillate relative to the transverse beams 4 in the plane x xoz and yoz. The small particles of the understeer product that have fallen on the rippers 8 are thrown away from the oscillation zone and thus prevent material from sticking to the transverse beams. Due to this, elastic elements located above the transverse beams are not limited by vertical oscillations and, together with elements 2 located in other parts of the sieve, provide an intensive process of classification. In addition, due to the discarding of material from the zone of oscillation of rippers, the number of collisions of the particles of the undersize product with cross beams is reduced, which helps to reduce their abrasive wear, and the cross beams are actively protected.

In the examples of making rippers in the form of a tubular element 9 bent in plan (figure 4 and 5), a cantilever-mounted plate 11 (figs 6 and 7) or a rigid rod 13 (figure 09), the most intensive rejection of particles of the undersize product is realized in the areas of support mating 3 with transverse beams 4 (figure 1), in

78816

which is most likely to adhere to material,

When making rippers in the form of a solid plate 11 (Fig. 8), located J across the width of the box 5, the sticking material is removed along the entire length of the transverse beam 4 due to the plate 0 transverse oscillations with amplitude f in the yoz plane. (Fig. 13) along closed trajectories of m q and S, particles of the undersize product are discarded along the whole 5, the length of the transverse beams 4 "

Thus, the installation in the proposed device between the bridge and transverse beams oscillations of the rotor. Will increase the efficiency of 0 screening due to the prevention of

Claims (1)

sticking of material on cross beams. In addition, dropping the material from the rippers from the transverse beams will reduce their wear by reducing the number of small particles hitting the surface of the transverse can, 5 1, the screen comprising a screen of els- tic elements fixed in supports mounted on the cross beams of the box, characterized in that, in order to increase the efficiency of the screening process by preventing the material from sticking on the beams, the screen is equipped with rippers, installed in the field of matching struts with cross beams and above the latter with the possibility of oscillations in 4Q plane perpendicular to the screen surface. 2, crash according to p „1, about tl and h a go u and with the fact that the rippers are made in the form of elastic plates from a rubber-cord-cord composite oriented along cord beams, 3, crashing la 1, about tl and h and y u and with the fact that the rippers are made in the form of elastic elements bent in plan with a tubular cross-section, mounted with a strain on rigid pins attached to the support 0 five Fig 1 FIG. - " Y YU J3 -Q with fa cl 100 I DO Ln -j -vl CO CO Ul -4 -j x CMtM Uj to i & s 4J 91 one/ five sh Ijlji “Yes t w g 1 ll eight yyyyy 91 five/ IT I I  P. / G I LTT Z 3 -E I88iiSI In //////, AND ch tl i FIG. sixteen H / -j to AND FIG. 15 to to d Fig