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Dust fall system for cantilever type heading machine

A cantilever type, roadheader technology, which is applied in the direction of slitting machinery, earth-moving drilling and mining, etc., can solve the problems of difficult on-site implementation, high air viscosity, and difficulty in advancing, and achieves broad market application prospects, avoiding diffusion, and improving dust removal efficiency. Effect

Inactive Publication Date: 2013-09-11
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coal seam water injection and dust prevention is to inject water into the tunnel before the excavation work to reduce the generation of dust. Due to the fast excavation speed, it is difficult to implement on site. Therefore, the water injection technology for coal seam excavation is not suitable for modern production needs; and the spray dust reduction commonly used now is Use the pressurized water spray to press the coal dust at the coal drop point to achieve the effect of dust reduction, but it is easy to cause the air viscosity in the roadway to be high, and the generated powder mud will fall on the road surface of the excavation, causing the road surface to be muddy, making it difficult to advance during excavation

Method used

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  • Dust fall system for cantilever type heading machine
  • Dust fall system for cantilever type heading machine
  • Dust fall system for cantilever type heading machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 , a cantilever type roadheader dust suppression system provided by the present invention includes a mine dust collection mechanism 2 and a mine dust treatment mechanism 3 installed on the roadheader body 1,

[0021] The mine dust collection mechanism 2 includes an umbrella-shaped dust collection cover 2a sleeved on the cutting arm of the roadheader, and a rock filter screen 2b is installed in the umbrella-shaped dust collection cover 2a; in order to increase the dust removal effect, the dust collection cover is not Under the premise of affecting the work of the roadheader, it should be as close as possible to the cutting head. Because the rock filter 2b is close to the cutting head, it is easy to be damaged and needs to be replaced regularly. Therefore, the filter is designed to be easy to disassemble.

[0022] The mine dust processing mechanism 3 includes a dust reduction box 3a, and a dust suction pipe 3b communicating with it is transversely penetrated i...

Embodiment 2

[0025] see image 3 , the water mist nozzles 3e are uniformly arranged in the nozzle groove 4 communicating with the water inlet pipe 3f, and a diversion groove 5 is provided at the junction of the nozzle groove 4 top and the water inlet end of the water inlet pipe 3f. The two ends of the groove 5 are in contact with the dust filter 3d respectively, and are used to wash away the powder mud adhered to the filter.

Embodiment 3

[0027] The dust suction pipe 3b adopts a flexible plastic hose structure, and the number is recommended to be designed as two or more groups to improve the dust collection efficiency.

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Abstract

The invention discloses a dust fall system for a cantilever type heading machine, which comprises a mine dust collection mechanism and a mine dust treatment mechanism, wherein the mine dust collection mechanism comprises a suction hood sleeved on a cutting arm of a heading machine; the mine dust treatment mechanism comprises a dust fall box; the middle part of the dust fall box transversely penetrates through a dust suction pipeline communicated with the dust fall box; dust filtering nets are respectively arranged on the part of an inner cavity of the dust fall box, which is close to the dust suction pipeline; a water mist nozzle is arranged on the top of the inner cavity of the dust fall box between the dust filtering nets; a water inlet pipe and a water suction pump are arranged on the water mist nozzle; an inverted frustum-shaped sewage collection cavity is formed in the bottom of the dust fall box; the bottom of the sewage collection cavity is connected to a drainage pipeline; a rotating clapboard is arranged between the sewage collection cavity and the drainage pipeline at an interval; the rotating clapboard is connected to the bottom of the dust fall box through an elastic part. The dust fall system can move along with the heading machine, excessive external matched equipment is not required, excessive manual operations are not required, the heading operation is not influenced, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of coal mining machinery and equipment, and in particular relates to a dust suppression system applied to a cantilever roadheader. Background technique [0002] Mineral dust refers to the general term for various coal and rock particles produced in the process of mine production and construction. The hazards of mine dust are mainly reflected in the following aspects: 1) pollute the workplace, endanger human health, and cause occupational diseases; 2) some mine dust (such as coal dust and sulfide dust) can explode under certain conditions; 3) accelerate Mechanical wear shortens the service life of precision instruments; 4) Reduces visibility in the workplace and increases the occurrence of work-related accidents. [0003] According to the survey, the dust production of the tunneling face accounts for 20% to 38% of the dust production of the entire mine. The dust in the tunneling face is mainly caused by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/22
Inventor 胡坤郭永存肖宪坚张清程刚王鹏彧
Owner ANHUI UNIV OF SCI & TECH
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