SU1643117A1 - Apparatus for fractionation of fluid materials - Google Patents

Description

one

(21) 4671898/11 (22) 04/03/89 (46) 04/23/91. Bul Number 15

(71) Ural Polytechnic Institute. S.M.Kirov

(72) F.E.Linetska and V.S.Barbolin (53) 621.928.232 (088.8)

(56) Application of the Federal Republic of Germany N ° 1224132, cl. On 07 May 4/08, 1966.

(54) DEVICE FOR SEPARATION ON THE BULK MATERIAL FRACTION

(57) The invention relates to the technique of transporting bulk materials, mainly polydisperse, and can be used in the energy, metallurgical, construction, food and other industries. The goal is to increase reliability. A device for dividing the bulk material into fractions is provided with several, mounted one above the other, inclined air-permeable partitions. In the cross section of the airgel has a conical shape. In the course of the air, the cross section of the air-permeable partitions increases, and the size of the perforation decreases. Smaller particles are transported on the upper partitions and coarse ones on the lower partitions, which allows the transported dispersed material to be divided into fractions. 2 Il.

The invention relates to a technique for transporting bulk material, mainly polydisperse, and can be used in the energy, metallurgy, construction, food and other industries.

The purpose of the invention is to increase the reliability of

FIG. 1 schematically shows a device; in fig. 2 shows section A-A in FIG. one.

The device consists of a body 1 with bunkers for loading 2 and unloading 3 bulk material, the body has a conical shape with its top facing downwards (Fig. 2). Inside the housing 1, air-permeable partitions 4-6 are mounted obliquely and abreastly one after the other with a perforation decreasing in the direction of the hopper (the number of partitions may be 2 or more).

Above the air-permeable partitions, transport channels are formed to move the bulk material, predominantly

WITH

substantially dispersed in the form of a fluidized bed. FIG. 2, an air inlet channel 7 is located, at the top — an air intake channel 8. The space between partitions 4 and 5, 5 and 6 simultaneously forms both the air inlet and air collecting channels of these partitions.

The device works as follows.

From the hopper 2 into the device body 1, the source material is fed to its lower air-permeable wall 4. At the same time, air is supplied under the lower air-permeable barrier 4 in an amount necessary to fluidize the material that has entered the partition. A part of the material whose particle soaring velocity is less than the air velocity cm on the partition 4 is carried into the fluid space and passes through the holes (perforation) in the partition 5, forming a fluidized bed

Ј

ABOUT)

Vj

partition wall. In turn, the smallest particles from the layer on the partition wall 5, the soaring speed of which is less than the speed of air OJ2 is also carried into the superlayer space. Then they pass through the holes (perforation) in the partition 6 and form a fluidized bed on it at a velocity of 3 n. Since the cannel is cone-shaped, the speed of the supplied air is constantly reduced along its height and therefore the upper part of the cannel (on the partition 6) collects a small fraction, and the largest particles remain on the partition and (below). In addition to air classification, the proposed air wiper also provides for the sieve classification of particles by size: the diameter of the air-permeable baffle hole decreases with air flow. This eliminates the random transfer of particles on the overlying partitions, the size of which exceeds the size of the opening of this partition. At the same time, the functionality of an aerogamine expands - there is a deep classification of particles according to

-H t

; t

d / 4. I.,

Yudu

measures and their collection after transportation in separate bins 3.

Claims (1)

The invention of the Device for the separation into fractions of bulk material, mainly polydisperse, containing a hopper, a chamber located underneath, communicated with a source of compressed air on the side of its end, and perforated baffles installed in the chamber along the side of the receiving silos Air passage and transport channels, characterized in that, in order to increase reliability of operation, the lower perforated partition is positioned with fixing its upper end on the end wall of the chamber under the loading bin, and the bottom on its bottom in front of the receiving bunkers, while the chamber in cross section has the shape of a cone with the top facing downwards, the partitions are made with perforation decreasing in the direction of the loading bin, channel at the bottom. / eight Air Jg  four" , FIG. 2