One-way spiral conic regulating rod

The utility model relates to a one-way spiral conical regulating rod which is especially used on a clogging device. The utility model mainly solves the defect that the existing regulating rod of the clogging device is not easily butt-jointed with a measuring and regulating instrument and is easily d...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YUNFEI LI, CHUANJUN ZHANG, QINGFA WANG, LIHONG ZHANG, JUNYOU WU
Format:	Patent
Sprache:	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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