Anti-oil-leakage retarder of pumping unit and using method

The invention discloses an anti-oil-leakage retarder of a pumping unit and a using method. The anti-oil-leakage retarder of the pumping unit comprises a case base, a case cover, a driving shaft bearing cover, a driving shaft bearing, a bushing driving shaft, a left-hand helical gear, an intermediate...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YANG ZAICHUAN, YU TIEJUN, HE YANWEN, LIU DONGLIN, JIANG YUANYUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS THERMAL INSULATION IN GENERAL WEAPONS
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