Grouting device for preventing coal spontaneous combustion

Abstract

The invention provides a grouting device for preventing spontaneous combustion of coal, the grouting device comprises a crushing and feeding mechanism, the crushing and feeding mechanism is used for crushing and scattering grouting raw materials, and the crushing and feeding mechanism is used for automatic feeding, so that the functions of crushing, scattering and automatic feeding of the grouting raw materials are realized; the crushing roller and the auger motor are matched with the driving gear and the driven gear, so that the functions of crushing and automatic feeding can be completed only through one motor, the cost is saved, and meanwhile the phenomenon that a grouting pipe is blocked due to the fact that grouting raw material particles are large is avoided; the interior of the stirring tank is subjected to air exhaust treatment in the stirring and slurrying period, the air content in grouting materials is effectively reduced, the phenomenon that after the grouting materials are cooled, holes are formed in the grouting materials is effectively avoided, the grouting quality is further improved, the mixing mechanism is matched with the multiple stirring mechanisms, uninterrupted slurrying and grouting operation is achieved, and the grouting efficiency is improved. And the grouting continuity is effectively improved, and the grouting quality is improved.

Description

technical field [0001] The invention relates to the technical field of grouting in coal mines, in particular to a grouting device for preventing spontaneous combustion of coal. Background technique [0002] Coal is mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. The sum of carbon, hydrogen and oxygen accounts for more than 95% of organic matter. It is a very important energy source and an important raw material for metallurgy and chemical industries. There are several classifications of lignite, bituminous coal, anthracite, and semi-anthracite. [0003] Fire-fighting grouting device for coal mine refers to the device used in the situation of coal spontaneous combustion in underground working face and goaf of coal mine, usually mud, fly ash slurry, lime slurry and chemical gel using water as the transport medium The slurries or higher viscous liquids are grouting fluids. [0004] However, it is easy to agglomerate due to the ac...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a grouting device for preventing spontaneous combustion of coal, which is used to solve the problem of a grouting device for preventing spontaneous combustion of coal in the prior art. The accumulation of raw materials is prone to agglomeration, which is not convenient for the sufficient mixing of the grouting material, and the phenomenon of clogging the grouting pipe is easy to occur, and a large amount of air is easily mixed into the slurry during the mixing period, resulting in porosity easily appearing inside the slurry after cooling , and then directly affect the quality of grouting, and because the demand for grouting cannot be accurately measured during the survey, there will be insufficient grouting material. The existing device cannot carry out continuous stirring grouting, resulting in During the grouting period, the grouting material in the grouted area solidifies, which eventually leads to the failure of the grouting. Therefore, it is necessary for the existing grouting device to prevent the grout from sticking during the stirring process. The scraper on the inner wall of the tank is set, but the existing scraper device does not have an automatic adjustment function, and the worn scraper needs to be replaced frequently, which increases the workload of the staff

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