Down-the-hole drill reverse exhaust system

Details Down-the-hole drill reverse exhaust system Down-the-hole drill reverse exhaust system

E - Fixed Constructions

21

B

E21B 4/00 (2006.01)

Patent

CA 2750810

A DHD hammer that can exhaust working air volumes partially through a proximal end of the DHD hammer's actuator assembly includes a drive chamber, a return chamber, and a backhead that includes exhaust ports. Working air volumes from the drive chamber are exhausted through the backhead while working air volumes from the drive chamber are exhausted primarily through a drill bit.

L'invention porte sur un marteau de forage de fond de trou qui peut partiellement évacuer des volumes d'air de travail à travers une extrémité proximale de l'ensemble d'actionneur de marteau de forage de fond de trou, lequel marteau comprend une chambre d'entraînement, une chambre de retour et une tête postérieure qui comprend des orifices d'évacuation. Des volumes d'air de travail provenant de la chambre d'entraînement sont évacués à travers la tête postérieure, pendant que des volumes d'air de travail provenant de la chambre d'entraînement sont principalement évacués à travers un trépan.

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