Packing box facilitating replacement of packing

A packing box facilitating replacement of packing mainly solves the problem that packing of an existing packing box is difficult to replace. The packing box is characterized in that the shape of the inner hole of a packing cylinder (1) is a big-end-up cone, the shape of each bushing (2) is a semi-ci...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	JIN JIAGUO
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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