METHOD OF CLEANING HOLLOW ARTICLES AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2003 - IPC

FIELD: cleaning hollow articles; mechanical engineering; oil, chemical and food-processing industries; aerospace engineering. SUBSTANCE: proposed method includes pumping fluid at preset flow rate through cavity of article and forming hydrodynamic action by abrupt deceleration of flow. Hydrodynamic action is formed by introducing counter flow of fluid at rate equal to or higher than that of first flow and accelerating this flow in opposite direction to initial velocity of flow. Device proposed for realization of this method includes reservoir for washing fluid, hydraulic distributor having body and movable valve flow interrupter with inlet and outlet pipe unions, pump and supply and discharge pipe lines of supply and return of washing fluid. Body of hydraulic distributor has cavity with cylindrical surface, holes in walls of this cylindrical surface which are connected with inlet of article, outlet, supply and discharge pipe lines. Said valve-interrupter is made in form of movable nozzle whose inlet opening is connected with pipe line of supply main at all times; nozzle is made in such way that it takes one of extreme positions during motion at which it closes one of holes in cylindrical surface of cavity connected with inlet or outlet of cavity of article. EFFECT: enhanced efficiency and quality of cleaning by 3-5 times. 6 cl, 3 dwg