Gas extraction pipe communicating device

• Main Authors: ZHANG BIN, WEI YONGJIAN, QIE LIMIN, WANG YIMIN, BAI KEXIN
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The utility model discloses a gas extraction pipe communicating device. The gas extraction pipe communicating device comprises a main extraction and drainage pipe and extraction and drainage hoses. The main extraction and drainage pipe horizontally arranged is connected with a four-way pipe through...