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Transformation method of negative pressure suction dust removal process in coal mine

A negative pressure suction and process technology, which is applied in dust prevention, mining equipment, earthwork drilling and mining, etc., can solve the problems of small dust removal air volume, many ancillary equipment, complex processes, etc., and achieve high dust removal efficiency, easy movement, and simple process Effect

Active Publication Date: 2016-09-28
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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  • Transformation method of negative pressure suction dust removal process in coal mine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0030] 1).Equipment transformation

[0031] 1) A bell mouth 2 is installed at the air inlet of the axial flow fan 1, and a plurality of uniformly distributed high-pressure water jet pumps 3 and a plurality of evenly distributed high-pressure gas jet pumps 4 are installed 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 air 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 frame and a flexible woven net wrapped on the cage frame, the downstream end of the outer cylinder 51 is connected with an annular sealing plate 53, and the lower part of th...

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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 of negative pressure suction and dust removal technology in underground coal mines. Background technique [0002] Mineral dust is the fine particles of ore and rock produced in the mine production process. Coal dust is a kind of mine dust. When the concentration of explosive coal dust reaches 45-2000g / m3, it will explode when encountering a high-temperature fire source of 700-800°C, and produce a large amount of toxic and harmful gases (such as CO), and even It can cause gas explosions and mine fires. In addition, mine dust can also make workers who have been exposed to mine dust for a long time suffer from pneumoconiosis. [0003] According to the relevant policy requirements of the state on the working environment of coal mines, coal mining enterprises are comprehensively carrying out mine dust control work to ensure the safe production of enterprises and improve economic, social, environmental and sa...

Claims

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Application Information

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Patent Type & Authority Patents(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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