Hydraulically-driven automatic dredging device for gas extraction drill hole

• Main Authors: WANG ZHENTU, CHEN YONG, DENG ZHAOYU, HU LIANGZHAO, LIAN CHANGJUN, ZHOU JUNWEN, FENG RENJUN, SUN HAITAO, WU JIAOKUN, ZHAO XUSHENG, DING HONG, MA HONGYU, TANG QIANG, YANG JIE, LI ZHENGNAN
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2021
• 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

The invention relates to a hydraulically-driven automatic dredging device for a gas extraction drill hole, and belongs to the technical field of coal mine gas extraction. The hydraulically-driven automatic dredging device comprises a hydraulic pump set, a water tank, a water conveying pipeline, a flow control valve, a pressure relief-header integrated device and a jet nozzle; the jet nozzle is driven by high-pressure water of the jet nozzle to automatically move forwards, blocked coal cinder is impacted, the stripped coal cinder is discharged out of a hole in time through a PVC mining gas hole sealing pipe, therefore, the purpose of effectively dredging the gas extraction drill hole in the underground coal mine can be achieved, and the problem that the drill hole gas extraction efficiency is reduced due to hole collapse, hole falling down and serious deformation of the gas extraction drill hole along with the extension of the extraction time is effectively solved. 本发明涉及一种瓦斯抽采钻孔水力驱动自动疏通装置，属于煤矿瓦斯抽采技术领域。本发明的装置包括