Underground coal mine drilling closed dust removal system and method

Abstract

The invention discloses an underground coal mine drilling closed dust removal system and method. The system comprises a drilling device, a dust removing device and a hole sealing device; the drillingdevice comprises a drilling machine, a drilling pipe and a drilling bit, the dust removal device comprises a compressed air pipe; Sealing ring and gas-solid separator, Powder discharging hose and dustremover, Bearing is arranged in the middle of the sealing ring, A plurality of round holes are evenly distributed in the edge of the sealing ring in the circumferential direction of the bearing. thehole sealing device is next to the right side of the sealing ring; a central hole corresponding to the bearing inner ring is formed in the hole sealing device; the compressed air pipe holes correspondto the circular holes; The drill rod sequentially penetrates through the bearing and the center hole and then stretches into the drill hole, the drill rod is in running fit with the bearing, the compressed air pipe sequentially penetrates through the round hole and the compressed air pipe hole and then stretches into the drill hole, the compressed air pipe is in sealed connection with the round hole, the gas-solid separator is communicated with the tail end of the drill rod, one end of the powder discharging hose is communicated with the gas-solid separator, and the other end is in sealed connection with the dust remover. Closed dust removal in a drill hole is achieved, dust is prevented from flying all around during drilling, and the environment of a workplace is improved.

Description

technical field [0001] The invention relates to the technical field of borehole dust removal, in particular to a borehole airtight dust removal system and method for underground coal mines. Background technique [0002] During the construction process of dry drilling underground in coal mines, a large amount of dust will be generated, and the generated coal dust will emerge from the hole opening and spread to the surrounding environment. In the confined space underground, if people inhale for a long time, it will cause lung damage. Bad effects, severe cases may suffer from pneumoconiosis, which will have a great adverse effect on the health of underground personnel; and once a large amount of dust accumulates, dust combustion and explosion accidents will occur under certain conditions, which will bring safety hazards to the lives and properties of employees. Coal mine dust also reduces the visibility of the workplace. When the concentration of coal dust in some underground w...

AI Technical Summary

Problems solved by technology

[0002] During the construction process of dry drilling underground in coal mines, a large amount of dust will be generated, and the generated coal dust will emerge from the hole opening and spread to the surrounding environment. In the confined space underground, if people inhale for a long time, it will cause lung damage. Bad effects, severe cases may suffer from pneumoconiosis, which will have a great adverse effect on the health of underground personnel; and once a large amount of dust accumulates, dust combustion and explosion accidents will occur under certain conditions, which will bring safety hazards to the lives and properties of employees. Coal mine dust also reduces the visibility of the workplace. When the concentration of coal dust in some underground working faces is high, the visibility is extremely low, which often leads to misoperation and increases the probability of industrial accidents; dust also causes adverse effects on underground machinery. influence, accelerate mechanical wear, and shorten the life of precision instruments, so it is necessary to take corresponding dust collection and dust removal measures

[0003] At present, the commonly used measures include orifice dust collection, orifice spray, full-section spray and dust removal by dust collector, etc., spray technology, there will still be some dust that is not wetted by spray in time and spread into the air, resulting in low dust removal efficiency; dust removal by dust collector , although all kinds of dust collectors have been greatly developed and applied, but there are still problems such as large water consumption, large equipment volume, difficulty in quick withdrawal, installation and transportation, etc., and it is difficult to adapt to the needs of frequent replacement of drilling positions. bad

[0004] As far as the current dust removal technology is concerned, people have proposed some closed dust removal technologies, but they are often difficult to ensure the sealing effect, resulting in part of the dust being scattered, and the dust removal efficiency is not high. A more intense vibration occurs, which will also have a bad impact on the dust removal equipment and affect the dust removal effect

Images