SU731236A2 - Apparatus for drying dispersed materials - Google Patents

Description

The invention relates to a drying technique and can be used. in the chemical, coal industry, as well as in the industrial · building materials industry.

Known drying devices soder--containing 5 vertically mounted tube Vbnturi diffuser which is eccentrically embedded in the separator variable section, its exit port located in the largest cross-sectional plane of the separator and za- gruzochny pipe ¹⁰ adjacent to the neck [1].

The disadvantage of these devices is the impossibility of fractional unloading.

Also known are devices for drying 15 dispersed materials in the main auth. St. No. 645010, which are an improvement on the previously described part of the fact that a cylindrical shell, partially 20 covering the output end of the diffuser 12] is installed coaxially with the diffuser in the separator.

In a number of cases, it is advisable to separate the dried materials by size, for example, when releasing dusty · 25 dusted potassium salts, or when processing sand, where it is necessary to separate foreign inclusions of pebble type from its total mass. In these devices, this problem is not solved. zo

Invention. aims to ensure simultaneously with drying the classification of ma

This goal is achieved by the fact that, to the bottom of the cylindrical shell, a hopper with a discharge chute led outside the separator is connected, and in the upper part the shell is equipped with a chipper located above the diffuser.

In FIG. 1 schematically shows the proposed device; Fig / 2 is a section along a — A of FIG. 1.

The device comprises a Venturi pipe, consisting of a confuser 1, a neck 2 and a diffuser 3, a loading pipe 4, a hopper 5 with a discharge chute 6 for outputting a large fraction of dry material, a chipper 7, a separator 8 of variable cross section with a gas outlet 9 and a window 10 for output fine fractions of dry material, the coolant generator 11 and the shell 12 located coaxially with the diffuser, connected at the bottom with the hopper.

The device operates as follows.

The coolant from the generator 11 enters the confuser 1 and is in contact with the dispersed material in the neck 2, supplied there through the loading pipe 4. The gas suspension through the diffuser 3 enters into. 4 shell cavity 12, where it is divided. The finally dried largest fractions fall out through the annular gap, between the output cake of the diffuser -? and shell 12 into hopper 5, from where 5 are discharged through estrus 6. Smaller fractions close to the boundary size of separation are entrained by the gas flow upward and, hitting the chipper 7 in the form of concentrically arranged cones, are reflected and fall into the cavity of the discharge hopper 5 , from where they are also removed through the discharge chute 6.

The fine fractions, together with the gas stream, dry, continue to move upward, pass through the chipper 7 and are caught by the separator 8. The spent coolant is discharged through the pipe 9, and the captured small fractions of the material are discharged through the window 10. 20

The invention allows one to combine drying processes and classifications in one apparatus and to achieve a more uniform drying of various fractions of the material, ι ·.

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Claims (1)

Claim A device for drying dispersed materials according to copyright certificate No. 645010, characterized in that, in order to ensure the classification of the material at the same time as drying, a hopper with a discharge chute led outside the separator is connected to the bottom shell and the shell is equipped with a chipper located above diffusers. *