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An air curtain generator with optimized coverage and airflow velocity and its operation process

A technology of air velocity and air curtain, which is applied in mine/tunnel ventilation, dust prevention, mining equipment, etc. It can solve the problems of unsatisfactory dust control effect, discontinuous distribution of air curtain, and uneven air velocity, etc. Control effect, reduce the average dust concentration, and the effect of uniform air velocity distribution

Active Publication Date: 2022-07-19
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing structure still has problems such as discontinuous distribution of air curtain, small coverage area, uneven air velocity, etc., resulting in unsatisfactory dust control effect

Method used

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  • An air curtain generator with optimized coverage and airflow velocity and its operation process
  • An air curtain generator with optimized coverage and airflow velocity and its operation process
  • An air curtain generator with optimized coverage and airflow velocity and its operation process

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Coal roadway structure such as figure 1 As shown, including the main body 7 of the roadway, the main body size is 30×4×4m, the diameter of the vault is 5m; the front side of the main body is the fully mechanized excavation face 1, and the center of the fully mechanized excavation face is the dust inlet 2; There is a roadheader 5 inside the roadway. , its size is 8.5×2.9×1.75m, the operator is located on the front side of the roadheader 5, the front edge of the roadheader 5 is the air curtain generator 3 with a width of 0.03m; the air supply port 4 is located at the front of the air curtain generator 3 , connected with the front side of the air supply duct 6, the air supply duct 6 is located at the upper right of the roadway, the diameter is 0.8m, the height is 2.4m, and the rear side is the outlet 8.

[0036] The existing air curtain generator includes three main independent components: the upper strip air outlet, the left strip air outlet, the right strip air outlet, t...

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PUM

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Abstract

The invention discloses an air curtain generator with optimized coverage and airflow velocity and an operation process thereof, comprising an upper left strip air outlet, an upper right strip air outlet, a left strip air outlet, and a right strip air outlet. The upper left strip air outlet is connected with the chamfered angle between the left strip air outlet, and the upper right segment strip air outlet and the right strip air outlet are chamfered connection, so that the formation The air curtain is continuously and completely distributed in the cross section; the angle of the upper left strip air outlet and the upper right strip air outlet relative to the airflow nozzle is movably adjusted, so that the formed air curtain is vertically distributed in the same cross section. Inside. The air curtain generator of the present invention increases the coverage area of ​​the air curtain and makes the airflow velocity evenly distributed in the air curtain, thereby enhancing the blocking effect of the air curtain and improving the dust control effect.

Description

technical field [0001] The invention belongs to the field of coal mine dust prevention and control, and in particular relates to an air curtain generator with optimized coverage and airflow velocity and an operation process thereof. Background technique [0002] my country is the largest coal consumer. In recent years, with the continuous improvement of the degree of mechanization of fully mechanized excavation, the mining method and coal mining technology of the mine are developing towards the direction of high-yield and intensive production. But at the same time, this technology can easily lead to an increase in the dust concentration of the fully mechanized excavation face, and the dust concentration often exceeds the standard. The physical and chemical properties of dust coal dust particles determine that it not only threatens the health of mine workers, but also affects the safety of coal mine production. Therefore, it is imperative to take effective measures to reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00E21F1/00E21F17/00
CPCE21F5/00E21F1/00E21F17/00
Inventor 耿凡滕海旭冯馨悦桂长庚唐军华牛宏伟周福宝刘春
Owner CHINA UNIV OF MINING & TECH