RU20042U1 - AERATION UNIT OF FLOTATION MACHINE - Google Patents

Abstract

Aeration unit of a flotation machine containing a blade stator and a blade impeller, characterized in that the impeller consists of two concentric rings with blades located between them, protrusions are made on the lower ring, and the upper ring is connected to the drive shaft through the impeller, the blades of which are trapezoidal in shape .

Description

 Iflilllilitttie l r-r-; AERATION UNIT OF FLOTATION MACHINE

The proposed utility model relates to the mining industry, namely, devices for the flotation of materials and can be used in the metallurgical, food and other industries.

Known aeration site of the flotation machine III, located inside the blade stator, an impeller made in the form of a truncated cone with protrusions on the side surface facing down with a smaller base and connected to the hollow shaft for air supply, the impeller in the upper part contains a disk with a central hole and radial blades.

The closest analogue is a device for aeration of flotation pulp / 2 /, including an air distribution pipe with holes and an impeller mounted on it, consisting of radial blades mounted between the upper and lower disks with holes for pulp suction. The openings of the air distribution pipe are arranged circumferentially in the interdisc space.

The disadvantage of this device is that with this design of the aeration unit, high air dispersion performance is not provided.

The objective of the proposed utility model is the creation of the aeration unit of the flotation machine, which allows to increase the efficiency of the flotation process.

The problem is solved in that in the known aeration unit containing a blade stator and a blade impeller, the impeller is made up of two concentric rings with blades located between them, has lower lips on the lower ring, and the upper ring is connected to the drive shaft through the impeller.

To increase the degree of dispersion of air, there are point projections on the lower base of the impeller for preliminary crushing of air, and the impeller itself has a goodl It 0850

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B03D 1/14 is located inside the paddle stator.

In FIG. 1 shows a General view of the proposed aeration unit. In FIG. 2 - view

from below. In FIG. 3 shows a top view of the impeller, and FIG. 4 section along AA. In cross section, the impeller can have both a rectangular (Fig. 1) and conical shape (Fig. 5).

The aeration unit contains a blade stator 1 and an impeller. The impeller consists of upper 2 and lower 3 concentric rings. On the lower surface of the ring 3 there are protrusions 4, the shape of which is shown in FIG. 1 and a bottom view, FIG. 2. Blades are installed between the upper and lower concentric rings 5. The impeller is mounted on the hollow shaft 6 with its upper part through the impeller 7, and the lower ring is directly mounted on the shaft. The impeller has from 3 to 12 blades.

Aeration unit flotation machine operates as follows.

When the impeller rotates in its inter-ring space, a region of reduced pressure is created. As a result, the pulp rushes into the impeller through the holes between the upper concentric ring and the shaft 6. The impeller 7, having a trapezoidal shape, enhances the flow of pulp located above the impeller. Subsequently, the pulp is ejected by the impeller blades into the interstatic space of the stator. Air is supplied through the hollow shaft from the lower base of the impeller. On the projections 4 there is a preliminary dispersion of air. Dispersion at the edges of the stator blades ends, where a pulp-air mixture is formed. Nubbles of air capture particles of a useful product and raise them to the surface, forming a foam enriched with this product.

In the context of the elements of the impeller 7 have a symmetrical shape. Therefore, during operation of the aeration unit, the rotation of the impeller can be carried out in any direction.

The proposed aeration unit of the flotation machine can improve the efficiency of the flotation process

2

Sources of information taken into account:

1. RF patent No. 2095153, B03D 1/14, 1993

2. The certificate of authorship of the USSR, No. 1554974, cl. B03D 1/14, 1988

The authors

A.M. Gladyshev

 A.M. Gladyshev N.V. Tokarev (

Claims (1)

Aeration unit of a flotation machine containing a blade stator and a blade impeller, characterized in that the impeller consists of two concentric rings with blades located between them, protrusions are made on the lower ring, and the upper ring is connected to the drive shaft through the impeller, the blades of which are trapezoidal in shape .