Bubble dedusting system for air dust in mine roadway

Abstract

The invention discloses a bubble dedusting system for air dust in a mine roadway. The bubble dedusting system comprises an air pipe, a water pipe, a liquid dispensing box, valves, a pressure gauge, a flow meter and foaming machines, wherein the air pipe is conveyed to the foaming machines after being decompressed by high-pressure air in a high-pressure air pipe through an air-pressure regulating valve; the water pipe is formed by a branch pipe which is separated from an underground water supply pipe; the water quantity is regulated by a flow valve so as to supply water into the liquid dispensing box; each foaming machine is formed by a shell, a built-in water pipe, a foaming net, an air distributing plate and a bubble outlet; three foaming machines are arranged in one group; the bubble outlets of the foaming machines are arranged backwards relative to the air flow direction by 45-55 degrees; a foaming agent is formed by water, glycerol, detergent, vinegar, bath foam and soapy water; the size of each of the manufactured bubbles can be controlled by air pressure, and the number of the bubbles can be regulated according to a ratio of the foaming agent. The bubble dedusting system disclosed by the invention has the advantages that the structure is simple, the material source is wide, no pollution is generated, the air dust in the air flow of the roadway can be effectively adhered due to the floating of a large amount of bubbles, and the dedusting effect is achieved; the bubble dedusting system is suitable for air dust control of a mine air return roadway, a driving face, a stope face, a belt conveying transferring point and a milling coal hole.

Description

technical field [0001] The invention relates to an air bubble dust removal system for air dust in mine roadways, which is mainly suitable for dust removal in mine return air roadways, excavation working faces, mining working faces, belt conveying transfer points and coal chute holes. Background technique [0002] Coal mine roadway excavation and coal mining face mining will produce a large amount of dust, some of which are eliminated at the operating point, and other dust enters the return air system with the wind flow of the underground roadway to form floating dust. Solid particles, which can float in the atmosphere for a long time, sometimes called floating dust, also known as inhalable particulate matter (PM10), floating dust will affect the health of workers and easily lead to silicosis; the surface area of ​​1g of coal is 5-6cm 2 , its coal dust, its surface area can reach 2m 2 , coal dust mixed with air to form a flammable mixed gas, if it encounters an open flame or...

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Problems solved by technology

[0003] Ventilation and dust removal can only reduce the dust concentration at the operating point, and the dust suspended in the air flow still exists. This part of the dust will pollute other roadways and the air. Ventilation and dust removal have been used as a common dust prevention method; The environment is poor; the dust removal effect of the dust collector is obvious in a limited space, but it is obviously insufficient for the dust in the mine roadway; the foam dust removal can effectively cover and capture the dust at the operation point, but it still has defects for the floating dust

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