Coal mine deep hole fixed-point closed sampling device and method

• Main Authors: ZHANG YUMING, LI LIANGWEI, WU WENBIN, FU JUNHUI, ZHANG QINGHUA, WANG RAN, PAN XUESONG, DAI LINCHAO, SUN PENG
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of coal mine sampling. Relates to a coal mine deep hole fixed-point closed sampling device and method, the coal mine deep hole fixed-point closed sampling device is adopted for sampling, and the coal mine deep hole fixed-point closed sampling device comprises a connecting part connected with a drill rod, a sampling part in threaded connection with the connecting part and a drill bit arranged at the tail end of the sampling part and in threaded connection with the tail end of the sampling part; the sampling part comprises a coring outer cylinder, a one-way valve, a telescopic locking mechanism, a coring middle cylinder and a coring inner cylinder, wherein the one-way valve, the telescopic locking mechanism and the coring middle cylinder are sequentially sleeved with the coring outer cylinder, and the coring inner cylinder is sleeved with the coring middle cylinder; the coring inner cylinder is fixedly connected with the coring outer cylinder; the coring inner cylind