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.