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Method for improving underground coal mine negative pressure suction dust removal technology

A negative pressure suction and process technology, applied in the fields of dust prevention, mining equipment, earthwork drilling, etc., can solve the problems of many auxiliary equipment, small dust removal air volume, complex process, etc., achieve more auxiliary equipment, high dust removal efficiency, connection Simple way to effect

Active Publication Date: 2015-03-25
兖矿能源集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing wet dust removal fan adopts electric mode, which has large volume, high noise, many auxiliary equipment, and complicated process. The water jet dust removal fan has a small dust removal air volume and poor effect, so it is necessary to transform

Method used

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  • Method for improving underground coal mine negative pressure suction dust removal technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: as figure 1 As shown in the figure, the transformation method of the negative pressure suction and dust removal process in a coal mine includes the following steps:

[0030] 1).Equipment modification

[0031] 1) A bell mouth 2 is installed at the air inlet of the axial flow fan 1, and a plurality of evenly distributed high-pressure water jet pumps 3 and a plurality of evenly distributed high-pressure gas jet pumps 4 are added in the bell mouth 2, and the high-pressure gas jet pump 4 is located at a high pressure. Between the water jet pump 3 and the axial flow fan 1, a water film dust removal cylinder 5 is installed at the outlet of the axial flow fan 1. The water film dust removal cylinder 5 includes an outer cylinder 51 and an inner cylinder 52, wherein the inner cylinder 52 is formed by a cage. The frame and the flexible woven mesh wrapped on the cage frame are formed, the downstream end of the outer cylinder 51 is connected with an annular sealing plate ...

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Abstract

The invention relates to a method for improving an underground coal mine negative pressure suction dust removal technology. According to the method, a horn opening, high-pressure water jet pumps and high-pressure gas jet pumps are additionally arranged in front of an air inlet of an axial flow fan, and a water film dust removal barrel is additionally arranged at an air outlet of the axial flow fan; water, dust and fog are fully mixed through the high-pressure water jet pumps, the high-pressure gas jet pumps and the axial flow fan, and then the water, dust and fog are separated out by the water film dust removal barrel. The method for improving the underground coal mine negative pressure suction dust removal technology has the advantages of being small in investment, fast to take effect, obvious in dust removal effect and suitable for coal mine driving face dust removal.

Description

technical field [0001] The invention relates to a transformation method for a negative pressure suction and dust removal process in a coal mine. Background technique [0002] Mine dust is the fine particles of ores and rocks produced during mine production. Coal dust is a kind of mine dust. When the explosive coal dust concentration reaches 45~2000g / m3, it will explode when it encounters a high temperature fire source of 700~800℃, and a large amount of toxic and harmful gases (such as CO) will be produced. It can cause gas explosions and mine fires. In addition, the mine dust will cause the workers who have been exposed to the mine dust for a long time to suffer from pneumoconiosis. [0003] According to the relevant policy requirements of the state on the underground working environment of coal mines, coal mining enterprises are carrying out comprehensive mine dust control work to ensure the safe production of enterprises and improve economic, social, environmental and saf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/20E21F5/02
CPCE21F5/02E21F5/20
Inventor 王振平安满林任晓东马砺吴林峰冯浩王剑薛永利王建陈业武
Owner 兖矿能源集团股份有限公司
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