RU1801619C - Pneumatically vibrating separator - Google Patents

Abstract

Use: to enrich minerals, namely, to separate bulk materials into fractions by density. SUBSTANCE: initial material enters chamber 3. It is formed by deck 4 and lattice 5. Between them, on the discharge side of the light product, a dividing partition 6. The chamber is subjected to vibration. Under deck 7, air is supplied. Lungs. The particles are pressed to the grate 5. Under the influence of vibration and tilting of the chamber, they move to the tray 10. The heavy product moves upward to the tray 8. The intermediate product is cut off by the partition 6 and unloaded into the tray 9. 2 sludge.

Description

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The invention relates to mineral processing technology, in particular to devices for separating grain mixtures in a fluidized bed, the components of which have similar physical and mechanical properties, which are signs of separation, and can be used in mining, chemical, secondary non-ferrous metallurgy and other industries households.

The purpose of the invention is to increase the efficiency of the separation process by separate forced countercurrent transport of light and heavy fractions.

 In FIG. 1 shows the proposed pneumovibration separator; general view: in FIG. 2 - the movement of material in the working chamber of the pneumo-vibration separator ..

The proposed pneumatic vibration separator consists of a loading hopper 1 with a capacity control mechanism, made in the form of a blade feeder 2, inclined to the horizon of a vibrating working chamber 3, formed by a deck 4 and parallel to it installed grid 5. In the working chamber 3 there is a discharge chute b and loading 7 and discharge windows: 8 for a heavy product, 9 for an intermediate product, 10 for a light product. The working chamber 3 is supported by a rotary frame 11, which, by means of a screw lifting mechanism 12, provides for the adjustment of the longitudinal angle of inclination of the working chamber 3. The frame 11 is rotated by means of springs 13 and is supported on a foundation. Under deck 4, there is an air distribution grill 14 and a self-balancing vibrator 15 to create a reciprocating motion of the deck in a vertical plane. To prevent dust from escaping into the room from above, the working chamber 3 of the separator is covered by an umbrella 16. An umbrella 16 is connected to a fan for suction of dusty air.

Pneumatic vibration separator operates as follows.

Bulk material from the feed hopper 1 is fed evenly by the feeder 2 and enters through the feed window 7 into the working chamber 3 to deck 4. The direction of air movement in the working chamber 3 is created by forcing it under deck 4 through the distribution grid 14 and suction from the umbrella 16 through the upper grill 5. The oscillation direction of the working chamber 3 in a vertical plane is created by a self-balancing vibrator 15 and is provided by installing the separator on

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vibration isolating springs 13. Under the influence of pneumatic vibration, the material located on deck 4 is delaminated. Under the influence of air flow passing in the working chamber of the separator, a lifting force is created that exceeds the gravity of a light particle, but does not exceed the gravity of a heavy particle . In this case, the light particles are lifted to the upper lattice 5 and supported by it. Thus, the bulk material mixture is divided into two layers: the light fraction is pressed to the upper grill 5, the heavy one lies on deck 4. The contact of the layers is thus eliminated. Removal of the material to be separated from the working chamber 3 is carried out under the action of directed vibrations, excluding mixing of the fractions during transportation. When the working chamber 3 moves upward, the heavy fraction particles are thrown up and transported to the discharge window 4, while the working chamber 3 moves downward, the light fraction particles are thrown up and transported in the opposite direction to the discharge tray 6. Since the discharge tray 6 is airtight, particles light fractions, without experiencing the influence of air pressure, fall on it and roll to the discharge window 10. Fractions of intermediate density and aggregates accumulate in the upper layer of the mater deck located on deck 4. Under the influence of air flow and component of gravity they are rolled relative to the layer of heavy product in the direction of the longitudinal inclination of the deck, that is, in the direction opposite to the movement of the heavy fraction to the discharge window 9. In the absence of fractions intermediate density and intergrowths in separable material, the discharge window 9 is closed with a plug.

The use of a pneumo-vibration separator made it possible to increase the efficiency of the separation process.

As a result of experimental studies on a model of a pneumo-vibration separator, an increase in separation efficiency of 3.5% was achieved.

Claims (1)

The claims A pneumatic vibration separator comprising a working chamber with a deck and a grill located above the deck, an air supply device located under the deck, a loading device, discharge trays of light and heavy products adjacent to the opposite ends of the chamber, a vibrator and an umbrella to remove dusty air, characterized in that , in order to increase the efficiency of product separation, it is equipped with a dividing wall adjacent to the chamber end on the side of the discharge tray of a light product and unloading intermediate tray disposed under the discharge tray lung product, wherein the grating is installed with a gap relative to the deck, and the partition wall located therebetween, wherein a loading device is communicated with a space between the grid and the deck. Air flow control Phase 2