Gas pumping device for tunnel

The utility model discloses a gas pumping device for a tunnel, which comprises a shell, a filter adjusting device is arranged above the shell, one end of the shell is communicated with a gas pumping pipe, a concentration adjusting device is arranged at the upper end of the gas pumping pipe, and a co...

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Bibliographische Detailangaben
Hauptverfasser:	LIAO YUNPENG, DAI RONG, DENG YANG, ZOU ZENGFU, TANG SHILU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY EARTH DRILLING FIRELIGHTERS FIXED CONSTRUCTIONS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY MINING NATURAL GAS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SEPARATION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model discloses a gas pumping device for a tunnel, which comprises a shell, a filter adjusting device is arranged above the shell, one end of the shell is communicated with a gas pumping pipe, a concentration adjusting device is arranged at the upper end of the gas pumping pipe, and a concentration detector is fixedly connected to the upper surface of the gas pumping pipe. The device comprises a shell, a concentration adjusting device is fixedly connected to the inner surface of the shell, a fan is fixedly connected to the interior of the shell, the concentration adjusting device comprises a branch pipe, the inner surface of the branch pipe is fixedly connected with a one-way valve, and the upper end of the branch pipe is fixedly connected with a shielding plate. When the branch pipe rotates, a volute spiral spring in the fixing shaft drives a sealing plate to rotate and make contact with a limiting block, at the moment, the upper portion of the branch pipe is fully shielded by the sealing plate,