SU484013A1 - Three products hydrocyclone - Google Patents

Description

The invention relates to combined (combined) hydrocyclones and can be used in the enrichment technique and the classification of mineral raw materials.

A three-product hydrocyclone is known, including an external cylindroconical hydrocyclone with a tangential power supply and an internal cylindroconical hydrocyclone. The efficiency of separating the suspension into three products is low and the flow resistance is significantly lower.

The purpose of the invention is to increase the separation efficiency and decrease the hydraulic resistance.

This goal is achieved by the fact that hydrocyclones are installed with vertices in different directions and the inner hydrocyclone with the cylindrical open part is immersed in the cylindrical part of the outer hydrocyclone by an amount which is predominantly equal to the height of the cylindrical part of the outer hydrocyclopedo. The removal of the internal hydrocyclone from the zone of intensive formation of the upward flow and the air column allowed the use of the energy of rotational motion of the upstream flow for additional efficient phase separation. The exception of sharp rotation and compression of the flow at the entrance of the product into the internal hydrocyclone, as well as the absence of displacement of oppositely directed flows, significantly reduces the hydraulic resistance of the apparatus. The drawing shows a three-product hydrocyclone, longitudinal section.

The three-product hydrocyclone consists of two hydrocyclones proper: external 1 and internal 2. The external cylindrical hydrocyclone has a tangential nozzle 3 supplying the initial suspension, the lower conical part 4 passing into the outlet 5. The condensed suspension from the outlet 5 is discharged into the intermediate drain chamber 6 s bottom 7 and the pipe 8 output condensed suspension.

The inner hydrocyclone, which is directed upwards by the conical part 9, passes into the outlet 10. The intermediate products are discharged from the outlet 10 in

an intermediate drain chamber 11 with a nozzle 12 for withdrawing the intermediate product. The internal hydrocyclone is attached to the partition 13 and has a central drain pipe 14, which is fixed in the bottom 7.

Hydrocyclone works as follows. The initial mixture enters under pressure through pipe 3 tangentially into the upper cylindrical part of the hydrocyclopne and acquires a circular motion. Under the influence

The centrifugal force is more than the hard phase and is thrown against the walls and moves along a spiral path to the outlet 5, into the intermediate drain chamber 6 and is removed from the apparatus through the branch pipe 8. The main amount of liquid with a thin suspension at the apex of the cone changes direction, forming an internal upward vras, a flowing stream that enters the cavity of the internal hydro cyclone. Under the action of centrifugal force in the internal hydrocyclone, the solid particles are thrown to the walls of the internal hydrocyclone and spiral along the exit hole 10 into the intermediate chamber 11, from where they are removed through the nozzle 12. The second light-clarified light phase leaves the apparatus through the drain nozzle 14.

The mutual arrangement of hydrocyclones does not violate the hydrodynamics of the flows in the apparatus and allows drying, a deep separation of suspensions containing particles of different sizes and densities.

Subject invention

A three-product hydrocyclone including an external cylindroconical hydrocyclone with a tangential supply and an internal cylindroconical hydrocyclone, characterized in that, in order to increase the separation efficiency and decrease the hydraulic resistance, the hydrocyclones are installed tops in different directions and the internal hydrocyclone with a cylindrical open part is immersed predominantly equal to the height of the cylindrical part of the outer hydrocyclone.

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