HOLLOW ARTICLE WASHING METHOD Russian patent published in 1995 - IPC

FIELD: washing of hydraulic cylinder- type articles. SUBSTANCE: method involves cyclic displacement of piston between two extreme positions and alternatively supplying and and discharging gas-liquid mixture from article cavities, with gas bubbles being introduced into washing liquid prior to washing process. Gas bubble sizes are within the range preventing the bubbles from separation from liquid in article cavity. An amount of gas is then introduced into this flow, with size of bubbles providing separation of bubbles from liquid in article cavity. EFFECT: increased efficiency of washing articles and simplified construction. 1 dwg