Design method for preventing backward flow of front guide mechanism, front guide mechanism and rock drill

The invention discloses a design method for preventing backward flowing of a front guide mechanism, the front guide mechanism and a rock drill, the front guide mechanism comprises a front guide shell, a bit shank, a water injection sleeve, an O-shaped sealing ring and a first lip-shaped sealing ring...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG CAN, LI JUN, LIU JUN, REN GEFAN, YI DAYUN, FAN YUANZHE, XIAO ZHENGHANG, GAN SHIYU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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
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