摘要 |
A device is for channeling solids and fluids within a reverse circulating , fluid operated drill (1) that has first and second ends (1a, 1b), an axis extending between the ends, a casing (2) and a piston (3). The casing (2) ha s a bore (2a) extending between the drill ends and drive (Cd) and valve (Cv) chambers defined within the bore, the piston being movably disposed within the bore. The channeling device includes an elongated body (12) disposeable within the casing bore so as to extend along the casing axis and through the piston. The body has a longitudinal axis, a first end (12a) locatable proxi mal to the drill first end, and a second end (12b) spaced from the first end and locatable proximal to the drill second end. A material transport passag es (14) extends axially between the two body ends and provides a path for mo ving solid materials through the drill. A fluid passage (24) is configured t o couple the valve and drive chambers.
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