SU1419754A1 - Vibrating screen - Google Patents

Abstract

The invention relates to devices for sorting materials by size, fine metal chips, and can be used in metal recycling plants, machine building, metalworking, mining, and building materials industry. The purpose of the invention is to improve the efficiency of screening. Box 1 with a concave screen 2 at one end is mounted on an eccentricus and, and a vibration exciter (VB) 3, and the DHN is mounted on hinged spring supports 4, which are height-adjustable. At this point, BB 3 has a frequency-controlled drive 8. The screen rests on frame 9 with inclined sliding (C) 10 for the sifted material installed inside it, and C 11 for unfinished material, G. The starting material is vibrated by liii i, transmitted by explosive 3, is directed r; the number of electrons in the sieve 2 is in the direction of unloading of the large fraction. As the fines drop out, they increase the frequency of rotation of the drive motor 8, increasing the frequency of oscillation of the box 1. This contributes to the intensive shaking of the material and moving it towards the discharge side, resetting C 11 to the dump. The screened material at C 10 enters the corresponding receiver. The sifted material at C 10 enters the COO1 branch of the lean receiver. 2 hp f-ly, 5 ill. (C (L

Description

FIG. 7

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The invention relates to D.L. devices for sorting materials by size, mainly metal shavings, and can be used in metal recycling plants, as well as in enterprises of various branches of mechanical engineering, metalworking, mining industry and the construction materials industry.

The purpose of the invention is to increase the efficiency of screening.

 FIG. 1 shows a crash, general view; figure 2 is a view of And in figure 1 (the drive is conventionally not shown); fig.Z - node I in figure 1; figure 4 - section bb in fig.Z; on fig.Z - sieve vibration pattern.

The vibrating screen contains box 1 with a sieve 2. The sieve is curved with a voltage down. The box 1 is at one end mounted on an eccentric vibration exciter 3, and the other on hinged spring struts 4 consisting of springs 5 pressed between hinges 6, screw devices 7 regulating the free run of springs 5. Vibrating exciter 3 has a drive 8 that is adjustable in frequency rotation through the use of an AC motor with a phase rotor. The screen rests on the frame 9. Inside the frame 9, there is an inclined clip 10 for the sifted material, and from the side of the hinge rack 4 there is a clip 11 for the blank material.

The roar works as follows.

The vibration exciter 3 transmits the vibration to the duct 1. The oscillation amplitude of the drive (left) part of the duct is equal to the eccentricity of the vibration exciter, and the oscillation frequency is controlled by the drive motor 8. The non-driven spring-loaded part of the duct oscillates with the frequency of the drive side, but the oscillation amplitude is controlled by compressing the springs 5 in such a way that condition 1, 1 (figure 5)

This is necessary for the constant directional movement of the material along the sieve 2 in the direction of unloading large

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five

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fractions. When material is loaded into box 1, its frequency of oscillation is kept at low limits chosen by the operator depending on the composition of the starting material. As the fines drop out, the operator of the commander-controller, increasing the frequency of rotation of the drive motor 8, increases the frequency of oscillation of box I, which contributes to a more intensive shaking of the piece of material and simultaneously moving it to the unloading side with a drop on the inclined slide 11 into the blade.

The screened material through the slide 10 enters the wetting for the finished product. Upon reaching the screened material of the discharge part of the duct 1, the operator reduces the oscillation frequency to the original; A new batch of starting material is loaded and the screening cycle is repeated.

In operation, the curvilinear 5 form of the sieve 2 prevents the quick discharge of the unsized material to the dump and thus contributes to a more complete separation of the fine fraction. Adjusting the free travel of the springs 5 allows one to choose the ratio of the amplitudes of oscillations of the suspension 2, which is optimal for the screening material, which also contributes to an increase in the efficiency of screening.

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Claims (3)

1. A vibrating screen containing a screen with a sieve, installed at one end on an eccentric vibration exciter, and the other on an articulated stand, the drive of the exciter and frame, about tl and h and y y and n with topics that, in order to improve screening efficiency, the sieve is concave and the pivot posts are podtruzhineny. 2. Screen according to claim 1, about tl and h and y - y and with the fact that the hinge pillars are made adjustable in height. 3. Pop-1 roar, differing from the fact that the drive is adapted to control the rotational speed. 3 ten  one 5-5