Air injection soil sampling drilling tool

• Main Authors: FANG SHAOWEN, WAN ZHIQING, LIN CHUAN, FANG MINGHAO, DENG RONGRONG, LI QUANSONG, CHEN LIANG, LYU QILONG, SU XIAOQING, ZHANG ZONGZE, ZHANG ZENGYI, CHEN XINRU
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• 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 utility model provides an air injection soil sampling drilling tool which comprises an upper connector, an inner pipe, an outer pipe and a drill bit. An inner hole is formed in the upper connector, the two ends of the inner pipe are connected with the upper connector and the drill bit respectively, the outer pipe is arranged on the outer side of the inner pipe in a sleeving mode, a ventilation gap is formed between the outer side of the inner pipe and the inner side of the outer pipe, a plurality of air holes are formed in the drill bit, and the air holes are communicated with the air holes. And the air hole is communicated with the inner hole through the ventilation gap. After the air spraying and pressing soil sampling drilling tool drills into soil, soil, small sand and the like attached to the drill bit are brought out of the drill bit through high-pressure airflow flowing through the annular exhaust groove, soil samples to be drilled enter the sampling channel smoothly, the phenomena that the drill b