SU1488031A1 - Centrifugal separator - Google Patents

Abstract

The invention relates to the separation of powdered materials according to particle size using gas streams and can be used in chemical, construction, mining and other industrial sectors. The purpose of the invention is to increase the separation efficiency due to the preliminary separation of the starting material. The separator contains a cylindrical housing (CC) 1 with a tangential pipe 5 supplying the source material, an axial partition (P) 6, a tubular insert (TV) 7, a twisting device 8 installed in front of the TV 7. In the upper part of the CC 1 there is a pipe 10 of the light fraction output , and in the bottom - the pipe 9 of the output of the hard fraction. The source material together with the carrier gas enters the pipe 5, where it is twisted by the apparatus 8. The particles of the material are ejected by the centrifugal force to the pipe 5, and the slightly dusty gas enters the TV and with the help of П 6 is directed to the inner surface of CC 1. Leaving with after release The lightly dusty gas part of the flow is directed to the central zone of CC 1 in a vortex flow of lightly dusty gas, where material is separated. The light fraction is discharged through the nozzle 10, and the heavy fraction through the nozzle 9. The use of P 6 and TB 7 allows to send a slightly dusty stream to the inside of CC 1 and use it to separate the heavy fraction. The installation of the swirling apparatus 8 makes it possible to pre-separate the material into light and heavy fractions before separation in CC 1. 2 Il.

Description

The invention relates to devices for the separation of powdery materials according to particle size with the help of gas streams and can be used in chemical, construction, mining and other industries.

The purpose of the invention is to increase the separation efficiency due to the preliminary separation of the starting material.

Figure 1 shows the separator, a vertical section; figure 2 - section aa in figure 1.

The separator contains a cylindrical housing 1 with a centrifugal separation zone 2 formed by the upper 3 and lower 4 corners of the housing, a tangential inlet -5 for supplying the source material with an axial partition 6 adjacent to the separation zone, a tubular insert connected by an output end with an outer center separation zone cavity formed by the inlet pipe 5 and the axial partition 6, the twisting device 8, placed in front of the tubular; insert 7, the pipe 9 outlet coarse fraction, attached to the housing 1 and cover ayuschy with clearance the lower cover 4 and the nozzle 10 retraction light fraction razmeschen- ny centered top cover 3.

The separator works as follows.

The source material is supplied together with the carrier gas to the nozzle 5, where it is twisted by a twisting device 8, while the particles of the material under the action of centrifugal inertia force are thrown against the wall of the nozzle, and the slightly dusty gas moving through the center of the nozzle is fed through a tubular insert 7 connected to the partition 6, on the periphery of the separation zone 2, formed by housing 1, upper 3 and lower 4,

; lids. The remaining part of the stream, containing the main mass of the starting material, left after the separation of weakly reduced gas enters the central part of the separation zone 2 in the vortex

A stream formed peripherally by a weakly fixed pelvis where material separation takes place. Ready product (light fraction)

1488031

through pipe 10, and the heavy fraction is thrown against the wall of the housing and output through pipe 9 of the coarse fraction.

A positive effect is achieved by using a slightly dusty part of the input stream to form an aerodynamic centrifugal separation zone, into which the main part of the outgoing solid material is not fed along the edge of the zone, but into the formed stream. At the same time, part of the material is thrown off to the periphery of the zone separation. In addition, the installation of a partition and a cylindrical insert allows to direct a weakly dusty stream to the inner wall of the housing.

20 and use it to separate the heavy fraction. The use of a swirling apparatus makes it possible to extract the heavy (coarse) fraction from it before entering the source material for separation.

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Claims (1)

Invention Formula A centrifugal separator comprising a cylindrical casing, a tangential nozzle for carrying the carrier gas and the source material with a partition installed at the nozzle entrance to the body, a nozzle for withdrawal. light fraction, installed in the upper part of the body and coaxially with it,. a heavy fraction output pipe installed in the lower part of the body, characterized in that, in order to increase separation efficiency due to preliminary separation of the source material, the separator is equipped with a tubular insert installed inside the nozzle the supply of carrier gas and the source material on its axis and a twisting device located in front of the tubular insert inside the pipe supplying the carrier gas and the source material, the partition is installed for the carrier gas supplying pipe axis and the starting material and mates with the outlet of the tubular insert to supply the material from the tubular insert to the inner surface of the cylindrical body portion. 0 five 0 five 0 five Invention Formula A centrifugal separator comprising a cylindrical casing, a tangential nozzle for carrying the carrier gas and the source material with a partition installed at the nozzle entrance to the body, a nozzle for withdrawal. light fraction, installed in the upper part of the body and coaxially with it,. a heavy fraction output pipe installed in the lower part of the body, characterized in that, in order to increase separation efficiency due to preliminary separation of the source material, the separator is equipped with a tubular insert installed inside the nozzle the supply of carrier gas and the source material on its axis and a twisting device located in front of the tubular insert inside the pipe supplying the carrier gas and the source material, the partition is installed for the carrier gas supplying pipe axis and the starting material and mates with the outlet of the tubular insert to supply the material from the tubular insert to the inner surface of the cylindrical body portion. H Fie.2