METHOD AND DEVICE FOR SAND-BLAST CLEANING OF OUTER SURFACE OF SHIP'S HULLS

摘要

FIELD: sand-blast cleaning of ship's hull. SUBSTANCE: dry abrasive consisting of macroparticles used for sand-blast cleaning of hull 16 is fed to sand-blast reservoirs from bin units raised to required area from recirculation position 34. Used abrasive together with sweepings is collected and is placed on conveyer belt 28 running in parallel with keel blocks 18 for transportation of collected material to recirculation position 34 where it is subjected to treatment for removal of small particles and admixtures from abrasive material. This abrasive is loaded into feeding bin units to ensure connection with respective sand blast reservoirs. It is good practice to perform sand blast jobs from slightly raised platforms guarded by blinds held on plating 12 of dock. Sand blast reservoirs are located on side wall of dock. Abrasive sand is ferromagnetic and it is partially removed from plating 12 of dock by means of magnetic abrasive collecting unit; recirculation position 34 is located on barge 32 made fast to end of dock 10. EFFECT: enhanced efficiency.