SU1740692A1 - Air drawing off and dedusting device - Google Patents

Abstract

Use: mining industry to improve dust and sludge trapping during air cleaning. The device comprises a housing with a slurry outlet and a booster rod mounted on the outlet end of the housing, successively connected chambers and sludge tailings. The chambers are barrel-shaped or in the form of two truncated cones connected by large bases. The slurry spreader nozzles communicate with the cavity of the chambers and with the slurry outlet. 2 ill., 1 tab.

Description

The invention relates to the mining industry and can be used to clean the aspirated air from dust during various industrial processes.

A device for air purification is known, which consists of a body, an ejecting nozzle, a sludge trap and a sludge outlet.

However, this device does not effectively coagulate dust particles with water droplets in the stream.

The closest to the invention is a device comprising a body with a slurry outlet, housed in a nozzle body, a sludge separator and a towing thrust rod.

The disadvantage of this device is an insufficient degree of drip drop due to the overflow of sludge and dust by the air flow.

The purpose of the invention is to increase the efficiency of the device by providing improved capture of dust and sludge.

The goal is achieved by the fact that the known device for suction and air dedusting, including a body with a slurry outlet, housed in a nozzle body, a sludge trap and a booster, is equipped according to the invention with fixed chambers and sludge tailpipes at the outlet end of the body. barrel-shaped or in the form of two truncated cones connected by large bases, and the sludge tailpipes are in communication with the cavities of the chambers and with the sludge outlet.

FIG. 1 shows a device for suction and dedusting of the air; FIG. 2 shows a second embodiment of the series-connected chambers.

The device for suction and dedusting of air consists of the body 1 with the sludge outlet 2. In the body 1 there are nozzles 3

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for irrigating the dust-air flow with water, a sludge separator 4, designed to pre-clean the dust-air flow from the sludge and give the flow a rotational entrance movement at the outlet, and a booster 5, ejecting the dusty air inside the housing 1. On the output end b of the housing 1 are connected in series chambers 7, cavities 8 of which are in communication with sludge-removal nozzles 9. In this case, chambers 7 are barrel-shaped or in the form of two truncated cones 10 and 11, connected by large bases 12, and sludge-producing The single pipes 9 are in communication with the slurry tank 2.

The proposed device works as follows.

The dusty air from the mine workings is sucked in by the booster of pull 5 into the housing 1. The water from the high-pressure water supply system is sprayed with fine nozzles 3. The air flow captures the water droplets, forming a dust-water mixture. Next, the flow runs to the head a: o separator 4; upon impact, sludge formation and preliminary cleaning of the stream from water droplets with coagulated dust particles occurs. In this case, the sludge is discharged through the sludge separator4, acquires a rotational-translational motion at the outlet and is then directed into the cavity 8 of the chambers 7. Centrifugal forces are generated at the outlet of the slurry separator 4, which drop water drops with coagulated specks. on the wall of the cavity 8 of the chambers 7 with the formation of a dust film. Due to the smooth variation of the cross section of the cavity 8 of the chambers 7, there is a gradual decrease in the rate of translational movement of the air flow without its turbulization, i.e. violation of the rotational movement, which prevents disruption of the dusting film from the inner surface of the cavity 8 of the chambers 7 under the action of the velocity head of the progressive air flow. In this case, an additional purification of the air flow from dusty impurities occurs, which under

the action of gravitational forces flows down the inner surface of the cavity 8 of the chambers 7 and is discharged through the sludge outlet pipes 9 into the sludge outlet 2. The air escapes from the chambers 7 with purified dust and water droplets.

The use of the invention makes it possible to increase the efficiency of the device by providing improved dust and sludge collection.

The overall efficiency of dust removal is increased from 87% to 92% with one section and up to 95% with three sections of chambers 7. At the same time, the dripus decreases by 2.8-17 times. Comparative data of the device with the prototype are shown in the table.

Claims (1)

Apparatus of the Invention A device for air suction and dedusting, comprising a body with a slurry outlet, housed in a nozzle body, Sludge separator and pulling agent, characterized in that, in order to increase the efficiency of the device by improving dust and sludge collection, it is equipped with series-connected chambers and sludge-removal nozzles attached to the outlet end of the body, and the chambers are barrel-shaped or in the form of two connected the large bases of the truncated cones, and the sludge tailpipes are in communication with the cavities of the chambers and with the sludge disposal. one V  A FIG. I 7 8 7 eight I FIG. 2