Dry grinding prevention stuffing box

The utility model relates to a stuffing box in the field of petroleum exploitation, in particular to a dry grinding prevention stuffing box. According to the technical scheme, the dry grinding prevention stuffing box comprises a pressing cap, a stuffing, a box body and a base and is characterized in...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU HONG, LIU CHUAN, LV BINGYONG, ZHANG YUHUA, ZHENG LILI, LV QINGSHENG, LIU SHUANGLING, MA YANFENG, QIN YANHUA
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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