NOZZLE APPARATUS AND PROCESS FOR CLEANING INTERIOR SURFACE OF PIPES USING SAME

摘要

A nozzle assembly (10) for directing a fluidized particulate stream from a supply source includes a cylindrical conduit having an exterior wall surface, (14) a first opening with a coupling device for affixing the nozzle assembly to the fluidized particulate supply source a discharge opening positioned downstream from the first opening and an internal wall surface (20) which defines a flow channel through which the fluidized particulate stream flows. The nozzle has a retaining device (22) affixed to a surface of the conduit and an adjustable directing device (42) positioned proximate to the discharge opening for directing at least a portion of the fluidized particulate stream radially outward. A threaded connecting rod (34) affixes the directing device to the retaining device so that the directing device may be adjustably positioned relative to the discharge opening. The nozzle assembly is particularly useful in blast cleaning the interior of a pipe.