SU882660A1 - Vortex-type pneumatic separator - Google Patents

Description

(54) VORTEX PNEUMATIC SEPARATOR

I

This invention relates to the separation of bulk materials by aerodynamic properties.

A device for separating solid particulate materials is known that is provided with a swirling device with a tangential inlet nozzle. In the known device, the supply of additional air is provided, since the initial air flow with the material moves smoothly and for separation is used not rationally 1 ...

However, the supply of additional air leads to an increase in the energy intensity of the separation process.

The purpose of the invention is to reduce the energy intensity of the separation process through the rational use of air transporting the source material.

This goal is achieved by the fact that the twisting device is coaxially placed inside the separation chamber, forming an annular gap with it.

This arrangement of the twisting device provides in the separation zone cross-movement of the rarefied layer

separable material and air entering through the -tangential nozzle.

FIG. I depicts the proposed vortex pneumatic separator; in fig. 2 is a section A-A in FIG. - 1.

 The separator consists of a twisting device I, a tangential nozzle 2, a separation chamber 3. The side-wall of the twisting device with the chamber forms an annular gap 4 for exhausting air with a light fraction of the starting material. The separation chamber is closed by a lid 5. A collector 6 is used to collect the heavy fraction, made in the form of a truncated cone.

tS Vortex pneumoseparator works as follows.

The source material with an air flow through the tangential nozzle 2 is fed into the swirling device I. In this case, the air flow receives a rotational motion relative to the axis of the separator and moves with solid material to the inner surface of the side wall of the swirling device. In the lower part of the swirling device, the layer of the material being processed comes down from the free edge and during the flight intersects with a vortex air flow, which entrains the light fractions into the annular gap 4. Heavy fractions reach the inner surface of chamber 3 and are collected in collector 6. Light fractions are withdrawn by air flow from the annular gap 4 through an opening in the lid 5.

The rational use of air flow in the pneumatic separator allows to reduce the specific air flow rate, which ensures a reduction in the energy intensity of the pneumatic separator process by 30-40 / o.

Claims (1)

Claims A pneumatic vortex separator comprising a separating chamber, a twisting device with a tangential nozzle, devices for unloading selected fractions, characterized in that, in order to reduce the energy intensity of the separation process due to the rational use of the transporting air, the twisting device is coaxially placed inside the separation chamber to form her annular gap. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 582008, cl. B 07 B 7/083, 1975 (prototype).