Water vapor rotating jet dust settling device for comprehensive driving working face
A technology for dust suppression devices and working surfaces, which is applied in safety devices, dust prevention, mining equipment, etc. It can solve the problems of low water pressure in front of the nozzle, failure to use normally, jet flow cannot be atomized, etc., and achieves simple structure, easy handling, and easy operation. reliable effect
Active Publication Date: 2013-07-03
HUAIBEI MINING IND +2
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Problems solved by technology
[0004] It should be said that the above-mentioned studies have played a certain role in reducing the dust generated by the roadheader. However, due to various reasons, the above-mentioned technologies have not been widely used.
In actual use, there are still some problems with the internal and external spraying: one is that the nozzles arranged on the drum are partially or completely buried in the coal when the drum is cut, so that the sprayed jet cannot be atomized, and even the nozzles are blocked; the other is that The spray system inside the roadheader cannot be used normally due to leaking water seals and clogged nozzles; thirdly, the water pressure in front of the nozzle is low and the atomization effect is poor, so the dust concentration generated by the roadheader is still high, so it is very important to develop new technologies for dust reduction of roadheaders , the social significance is very important
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Embodiment Construction
[0023] Now mainly introduce the implementation example of the comprehensive mechanized tunneling face in the north wing of the Qinan Coal Mine of Huaibei Mining Group.
[0024] The air inlet lane is located in the middle of the mine field, and the construction section is at 3 2 Seam to 3 2 Within 20 meters below the coal bed, the lithology is mainly fine sandstone and mudstone, 3 2 The coal seam is 1.6-3.2 meters thick, with an average of 2.8 meters. It is mainly bright coal and semi-bright coal. The geological structure of the roadway excavation is simple. The EBZ-160SH cantilever roadheader is used to cut coal (rock) in milling mode, with a cutting depth of 350mm at one time, and the power supply voltage of the roadheader is 1140V. The form of temporary support is metal front probing beam, metal mesh for head-on anti-slab, and capped point column; the permanent support material is I-beam, the shape of the section is trapezoidal, the clear height of the roadway is 3700mm, t...
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The invention discloses a water vapor rotating jet dust settling device for a comprehensive driving working face, and belongs to the technical field of comprehensive driving working face dust settling and removing equipment. The dust of the comprehensive driving working face is reduced by combined action of a rotating jet air suction type spray device, a secondary rotating compressed air water jet dust absorption and removal device and a rotational flow air supply dust control device; and the rotating jet air suction type spray device sprays water to a roller cutting point and a shipping point. The pressure water of a water pipe becomes fog of finer fog drops and is sprayed to a dust production area so as to reduce the dust produced by a development machine during cutting coal, suck the nearby air and form a cyclone water vapor curtain mask; and the secondary rotating compressed air water jet dust absorption and removal device and a negative pressure air cylinder remove the dust whichis sucked into the rotating jet air suction type spray device by means of compressed air and spray of high pressure water in a venturi tube and is not caught, and the distance between the negative pressure air cylinder and a driving head is 2 to 5 meters.
Description
technical field [0001] The invention belongs to the technical field of dust reduction and dust removal equipment for fully mechanized excavation working faces. Background technique [0002] The fully mechanized excavation face is one of the sources of high dust in coal mines. Effectively reducing the dust concentration of coal cut by roadheaders is of great significance to the safety of coal mine production and the health of workers. [0003] In order to reduce the dust concentration of fully mechanized excavation work and effectively prevent the dust generated by the coal cutting of the roadheader, the dust prevention measures for the machine face at home and abroad mainly include spraying inside and outside the roadheader, using dust collectors, and adopting pull-out or push-in-pull combined ventilation. Methods, personal protection, etc. In recent years, related research has been carried out on the following aspects of machine excavation dust prevention technology. In fo...
Claims
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IPC IPC(8): E21C35/22E21F5/04E21F5/20E21F1/00E21F1/04
Inventor 陈家祥马中飞沐俊卫梁峰徐瑞杨秀莉李洪彬刘军
Owner HUAIBEI MINING IND