Method and apparatus for soil excavation using supersonic pneumatic nozzle with wear tip and supersonic nozzle for use therein

摘要

A tool suitable for soil excavation that can be used in a number of distinct applications is disclosed, wherein the tool includes a sonic or supersonic pneumatic nozzle assembly comprising a converging-diverging cylindrical nozzle body having an internal through passage with inlet on the converging side and an outlet on the diverging side of the nozzle body; and a replaceable cylindrical wear tip removably coupled to the nozzle body and with an internal through passage aligning with the outlet of the nozzle body, and wherein an outside form of the wear tip is configured to direct reverse sand blasting particles away from the external surfaces of the nozzle body.

主权项

1. A pneumatic nozzle assembly comprising:
A nozzle body having an internal through passage with an inlet on a first side and an outlet on an opposed side of the nozzle body, wherein the nozzle body is a converging-diverging cylindrical nozzle body having the inlet on the converging side and the outlet on the diverging side of the nozzle body, and an externally threaded nozzle connection; and A replaceable cylindrical wear tip removably coupled to the nozzle body through the nozzle body externally threaded nozzle connection and with an internal through passage aligning with the outlet of the nozzle body, and wherein an outside form of the wear tip is configured to direct reverse sand blasting particles away from the external surfaces of the nozzle body.