Orifice dust removal device and method for coal seam bedding drill hole

• Main Authors: LIU JUN, WANG JIANWEI, LIN FUJIN, NIE HAIYANG, ZHU ZHENGLI, LI DAYONG, XU TENGFEI, XIANG YANBIN, HE CHENGMAO, HE YUNWEN, RAN QINGLEI, ZHAO XUSHENG, HUANG GUANGLI, WANG ZHEN, MA ZHIYONG, LI ZHIHENG, YANG LEILEI
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention relates to a coal seam bedding drilling orifice dust removal device and method, and belongs to the technical field of coal seam bedding drilling construction dust prevention, the orifice dust removal device comprises a telescopic dust removal device, the telescopic dust removal device comprises a flexible bag, a plurality of water sprayers are installed in the flexible bag, and the upper side and the lower side of the flexible bag are provided with an air outlet and a slag outlet respectively; an expansion assembly detachably connected with the telescopic dust removal device is arranged at the end, close to the hole opening of the drill hole, of the telescopic dust removal device and comprises a barrel with the inner diameter larger than the outer diameter of the drill rod and a bag arranged around the barrel, and an inflation inlet is formed in the bag so that fluid can be injected into the bag through the inflation inlet to achieve expansion fixing of the expansion assembly. A connecting assem