SU1433880A1 - Jigging feeder - Google Patents

Abstract

The invention relates to vibratory conveying devices, and b. used in the enrichment of minerals in the mining, chemical and other industries. The purpose of the invention is to ensure the formation of a monolayer flow of small wet materials. The vibrating feeder includes a working body 1 mounted on inclined elastic elements 2 on frame 3. The frame 3 is mounted on a fixed base 4 on shock absorbers 5. The vibration drive consists of an electromagnet 6 mounted on frame 3 and a core 7 mounted on the working body 1. Powered electromagnet 6 from the generator 8 low frequency. On the working body 1, made of a magnetostrictive material, a wire 9 inductance is fixed along its perimeter. Last connected to the generator 10 ultrasonic vibrations. The working body 1, when applied to the wire 9 of the alternating magnetic field of the ultrasonic frequency, changes its linear dimensions along the vertical. Due to this, the appearance of cavitation occurs, which contributes to the formation of a monolayer material flow. I il. (Oh (L

Description

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The invention relates to vibrational transport, in particular, to monolayer transport devices of a material and can be used in the processing of minerals in a mining facility; Noah, chemical and other areas of; thoughtfully.

i The purpose of the invention is to ensure the formation of a monolayer flow of fine wet materials.

I The drawing shows a vibrating pi

I tatel, general view.

Vibrating feeder contains working body i mounted on inclined elastic elements 2 on frame 3. Frame 3 is mounted on fixed base 4 on shock absorbers 5. Vibration drive consists of electromagnet 6 mounted on frame 3 and crust 7 fixed on working body 1. Powered electromagnet 6 from the generator 8 low frequency. On the working body 1 made of magnetostricts of ionic material, for example from ferrite, an inductor 9 is fixed along its perimeter, which is connected to an ultrasonic frequency generator 10 mounted on a fixed base 4. Above the working body 1 a bunker 1

| with the original wet material. |

I The vibrating feeder works as follows.

The low frequency generator 8 generates voltage signals applied to the electromagnet 6, which, together with the elastic elements, creates oscillations of the working organ 1, under the action of which the source material located in the bunker 1 begins to move around the working organ. At the same time, the ultrasonic frequency generator 10 generates signals and supplies them to the inductor 9, which creates an alternating magnetic field of the ultrasonic frequency. Since the working body 1 is made of a magnetostrictive material, it 1 changes its linear dimensions vertically under the influence of the magnetic field of the ultraviolet frequency, i.e., the trays 1 oscillate in a vertical direction. The amplitude of oscillations is maximum at the resonant mode when the oscillation frequency of the ultrasonic exciting electromagnetic field coincides with the natural frequency of the mechanical oscillations of the working organ. At the same time, the main natural frequency / oscillation is defined as where С „is the propagation velocity

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sound in a magnetostrictive material (for example, for ferrite) m / s); / is the geometric size of the tray in the direction of sound propagation.

Thus, the working body 1 becomes an emitter of ultrasonic vibrations under the action of the magnetic field of the roller 9.

After the oscillations are excited, the working wet material enters the working body 1 from the hopper 1. Ore grains can be in the water and outside of it, and therefore, due to the surface tension of the liquid, they can be placed one above the other or form aggregates (lumps).

If a sticky lump is in water, then due to the large amplitude of sound pressure generated by the ultrasonic emitter by the working body 1, cavitation appears in the fluid (water) —a discontinuity inside the fluid — i.e., ultrasound has a crushing effect.

If a lump is formed and is out of the water, then the lump disintegrates due to the destruction by ultrasonic vibrations of the water film.

Consequently, the grains of the material are laid out in a monolayer and due to oscillations of the working organ 1 excited by the exciter, they move, which ensures its supply to the subsequent technological unit.

Thus, using the crushing properties of ultrasound, the vibrating feeder allows the formation of a monolayer flow of wet materials of small classes.

Claims (1)

Invention Formula A vibrating feeder containing a frame mounted on a fixed base on the shock absorbers, a working member with an electromagnetic vibration exciter associated with a frame with elastic elements, characterized in that, in order to ensure the formation of a monolayer flow of fine wet materials, it is equipped with an inductance coil and an ultrasonic oscillator with This is the inductance coil attached to the working body and located along its perimeter, and the working org .: It is made of magnetostrictive material, and the ultrasonic oscillator is mounted on a fixed base and connected to an inductance coil.