SU1669503A1 - Dust trapping arrangement - Google Patents

Abstract

The invention relates to the metallurgical industry and can be used for the purpose of dust collection in other industries. The purpose of the invention is to increase the efficiency of dust collection by creating a foam barrier. The dust collecting device comprises a housing 1, a chamber 2 for introducing a dusty air stream, chimneys 4 and 6, augers 7, a reaction tank 10 for removing the spent frother, a foam sling 11, a pipe 12 for draining the purified stream. Screws 7 mainly serve for withdrawal of spent and contaminated foam due to their free rotation on the axis under the action of air flow, and with a part brought into the reaction tank, ensure the destruction of this foam in the latter, from where the solution enters the process again. A frother is introduced through nozzle 13. 2 Il.

Description

The invention relates to the metallurgical and building industries and can be used in folk farms to control dust.

The purpose of the invention is to increase the efficiency of dust collection by creating a foam barrier.

FIG. 1 is a diagram of a dust collecting device; in fig. 2 is a section A-A in FIG. 1.

SUBSTANCE: dust collecting device includes case 1, partially filled with liquid, inside which there is a rigidly fixed chamber 2 of introducing a dusty air stream with an air duct 3, on the chamber 2 of a dusty air stream rigidly fixed baffles 1 and guides 5 partially immersed in a liquid. On the walls of the case 1 At the level of the bumpers 4, additional bumpers 6 are fixed. Between the bumpers 4 and 6 there is a gap in which the screw 7 is placed with the possibility of free rotation on the axis by means of bearings of rotation and 8. In the lower part of the housing is a belt conveyor part 9 of the screw withdrawn into the lateral recycle vessel 10 for discharging exhaust foaming agent, which is a bent cylindrical pipe sealingly connected to the lower end of the device housing the reservoir 10 communicates

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with the bottom of the device. In the upper part of the device case there is a round hole, which is shielded by foam breakthrough mesh 11. A pipe 12 for removing the cleaned air stream is tightly connected to the round hole in the upper part of the case. The housing is equipped with a nozzle 13 input foaming agent. The device can be used as a second stage of fine dusting of asphalt concrete plants.

The device for dust collection works as follows.

Into the device case 1, which contains a rigidly fixed chamber 2 for introducing a dusty air stream, is fed jno to the duct 3 a dusty air stream from the first dust removal stage, which picks up water with the dissolved foaming agent introduced through the nozzles 13, while and 6, the water with the foaming agent is separated from the stream and flows down to form a foam during sparging. A stream of dusty air flow, passage through the water, a layer of foam, acts on the augers 7, which, rotating with the axis on the bearings 8, capture the foam with wetted and adhering dust and lead to the tank 10, where part of the auger 7 is mechanically destroyed. foam. The solution from the tank 10 is recycled to the lower part of the housing 1. The precipitated dust particles are removed by the scraper conveyor 9. The foam filling the device is retained

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foam break 11, which is installed in the lower part of the pipe 12 for removal of the cleaned air stream.

As a result of foaming of the foaming agent during the bubbling of the device, the dusty air stream is cleared of dust, passage through the water and the foam layer, and the foam with wetted and adhered dust is conveyed by the augers to the tank to drain the spent frother, which increases the efficiency of the device.

Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A device for dust collection, comprising a housing partially filled with liquid, a chamber containing dusty air with guides partially immersed in a liquid, and dampers placed in its upper part, an air exhaust pipe and additional dampers, characterized in that dust collection efficiency due to the creation of a foam barrier, it is equipped with a lateral recirculation tank, a frother injection nozzle and screws placed with the possibility of free rotation and dennymi one end to the top of the recirculation vessel, wherein additional deflectors are arranged on the walls of the housing at the level of the input chamber baffles, dust-laden air, and screws are disposed between the main and additional baffles. Lena 12 G4 L jit //// LenoVra- - v f / jf zoo / lel ty Silyman / air / -. Yush Lopto 1 eight Aa tf 12 For / gelen- / 1A we (/ voV /, FIG. I