Abrading – Machine – Sandblast
Patent
1993-03-08
1995-03-21
Rose, Robert A.
Abrading
Machine
Sandblast
1510404, B24C 306
Patent
active
053984617
ABSTRACT:
Apparatus for cleaning the outer surface of a pipeline (10, 10B, 10C) including a self propelled carriage (28, 28B, 28C) supported on the pipeline for movement. A housing (30, 30B, 30C) forms an enclosed cleaning chamber about the pipeline and the cleaning material along with entrained waste material removed from the pipeline may be conveyed by a suitable conduit (40) from a discharge opening in the bottom of the housing (30, 30B, 30C) for separation of the cleaning material and waste material and return of the separate water to the housing in a recirculation system. The embodiment of FIGS. 11-15 is particularly adapted for use with high pressure water and includes a plurality of nozzle units (91C) mounted externally on the housing (30C) with each unit (91C) having a hydraulic fluid drive motor (96C) operatively connected to a nozzle (94C) for pivoting of the nozzle (94C) back and forth in an arcuate path. High pressure water is supplied to a tube or tubular shaft (90 C) connected to the nozzle (94C). An embodiment of FIG. 16 illustrates a fixed installation for the cleaning apparatus with the pipe being moved through the apparatus for cleaning.
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Rose Robert A.
Thomas E. B.
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