The difference between rotary drilling machine and rotary machine.
Different drilling principle: rotating drill through the rotary drive pipe, and connected by drill bit cutting rock, rock chip cutting down the drain hole through the mud circulation; and the rotary drilling rig is through the first power driven drilling bucket digging, drilling bucket filled with soil after the hole dumping, this repeated cycle into the hole.
The mud circulation in different ways: rotary drilling mud usually adopts reverse circulation rotary drilling mud, which is usually not cycle.
The driving modes are different: the rotary drilling rig operates the drill rod through the rotary table, while the rotary drilling rig is operated by the power head to drive the drill pipe.
The drill rod is different: the drilling rod of the rotary drilling rig is connected by a plurality of, while the rotary digging drill is usually provided with a telescopic drill rod.
