SU1207524A1 - Apparatus for removing dust - Google Patents

Description

The invention relates to the design of devices for the dedusting of granular materials with the subsequent disposal of dust and can be used in various industrial sectors for the dedusting of granular materials, for example, grains in the processes of grain preparation in the food industry.

The aim of the invention is to increase the quality of dust removal while moistening the dust.

FIG. 1 shows a device, a longitudinal section; in fig. 2 is a section A-A in FIG. one.

The device for dedusting granular material consists of a vertical rectangular housing 1, a vertical partition 2 installed in housing 1 and dividing it into a separation chamber 3 and a dust removal chamber 4, respectively, receiving bins 5 and 6 coaxially connected to the lower parts of chambers 3 and 4, an ejector 7 with a nozzle 8 located in the upper part of the second chamber 4 removing dust along its axis, a nozzle 9 for introducing granular material fixed coaxially above the camera 3, a vertical rectangular duct 10 with a nozzle 11 for supplying compressed air a zduusha forming an air chamber 12 with a side wall 13 of the chamber 3 of the housing 1 on which it is installed parallel to the vertical axis of this chamber 3 and in which are arranged the height nozzle holes 14 connecting the air chamber 12 with the chamber 3 of the housing 1 and directed perpendicular Directly to the flow of granular material, placed in the chamber 3 of the housing 1 along its axis, are staggered one above the other and connected in series with each other and with the air chamber 12 horizontal nozzles 15 with the upper surfaces The nozzle holes 16, directed towards the flow of granular material, the distribution chamber 17 with transverse plates 18 placed in it, located between the nozzle 9 for introducing the grain material and the chamber 3 of the housing 1 are coaxially above the horizontal nozzles 15, and the grate plates 19, are hinged and koisolno fixed alone with their ends on the vertical

the partition 2 with the possibility of angular rotation in the vertical direction inside the chamber 4 of the housing

1 and closing holes 20, made in the vertical partition

2 and located one above the other along its height perpendicular to the flow of granular material in the first chamber 3 of the housing 1.

The device works as follows.

The granular material, which has been subject to dedusting, for example, granule, flows through the branch pipe 9 into the distribution chamber 17, in which the chaotic flow of granular material is stabilized by means of plates 18 and assumes a flat shape. The material stream is then introduced into the chamber.

3 and in the form of a uniform flat flow of movement in it from top to bottom towards the receiving bin 5, from which it is diverted to the consumer, being exposed to air flows from two directions, opposite and perpendicular.

Perpendicular (transverse) air flows are formed when compressed air passes through the nozzle holes 14 in the inner wall 13 of the chamber 3, into which it enters from the air chamber 12 fed by compressed air through the nozzle 11 with a pressure reducing valve 21.

A counter stream of compressed air enters the stream of granular material from nozzle openings 16 in nozzles 15 connected by a manifold 22 to an air chamber 12. The sizes of nozzle openings 14 and 16 are chosen in such a way that the transverse flow of compressed air from nozzle openings 14 predominates, which blows off dust from particles of a granular material that is in a fluidized state due to the introduction of compressed air from its nozzle holes 16 into its stream.

At the same time, the cross-flow of compressed air, contaminated with dust, blown out from the surface of material particles, opening the grate plates 19, lowers into the second housing chamber 4, in which dust mixes with sprayed water droplets sprayed in this chamber 4 by means of an ejector 7 with a nozzle 8 . Water moistened with the drink settles in the lower part.

chambers 4 and is collected in a bunker 6, from which it is withdrawn for further processing.

The hinged arrangement of the grate plates 19 provides the necessary compressed air supply in the chamber 3 and prevents the granular material from entering the chamber 3 into the chamber 4 together with the dusty air through the windows 20.

21

I

XI d Air

Water

Blatna I dust

 fi.G

2

Compiled by E. Kiseleva Editor A. Dolinich ... .Tehred Z.Kastelevich. Corrector. Kolb

Order 84/6 Circulation 566 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch lirai Patrnt, Uzhgorod, st. Project, 4

Claims (1)

DEVICE FOR SPRAYING OF GRANULAR MATERIALS, including a casing, divided by a partition with openings located vertically, to a separation chamber with vertically arranged nozzle openings on the side wall connected to a compressed air source, a dust removal chamber, receiving hoppers, a granular material inlet pipe, o t l and h and yug. In addition, in order to improve the quality of dedusting while moistening the dust, the device is equipped with nozzles with nozzles installed horizontally and stepwise in the separation chamber and interconnected with a source of compressed air, a distribution chamber with transverse plates mounted between the separation chamber and the input pipe of granular material, grate plates, pivotally and cantilevered ends. on a partition with * openings that can be rotated vertically inside the dust removal chamber, by an ejector, with an nozzle mounted in the dust removal chamber, while nozzles are located on the nozzle surfaces facing the movement of the material.