METHOD AND APPARATUS FOR WASHING INNER SURFACES OF HOLLOW ARTICLES Russian patent published in 1999 - IPC

FIELD: processes and apparatuses for washing inner surfaces of cylindrical articles with single-side access and restricted inlet diameter in aircraft manufacture, machine engineering and other industry branches. SUBSTANCE: method comprises steps of feeding swirled stream of washing agent to branch pipe of article through joined nozzle at simultaneously removing washing agent through said nozzle. Article is subjected to action of converted stream of washing agent due to changing inlet function of joined nozzle to outlet function and vice versa at changing flow direction. Washing agent streams are alternatively intensified; disturbed stream is formed at changing its direction, flowrate, gas content and washing time period for each step in relation multiple to volume of agent fed for washing cavity. Apparatus for performing the method is in the form of nozzle joined with discharging branch pipe in the form of hollow needle. The last is arranged inside nozzle. Cone end of needle is turned, for example towards cavity of washed object. Nozzle and discharging branch pipe are mounted with possibility of their conversion. EFFECT: enhanced efficiency of continuous washing process. 4 cl, 3 dwg