DEVICE FOR CLEANING INNER SURFACE OF PIPE LINE (VERSIONS) Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: device consists of two sections: head section and tail section interconnected together. Each section has hollow housing with nozzles in its head portion and sets of cleaning and centering disks mounted on it. Cleaning unit is arranged between sets of disks of head section. Housing is provided with blind end wall in tail portion of each section; diameter of disk nearest to this wall is lesser than inner diameter of pipe line; it forms circular passage together with wall of pipe line. Other disks of tail section are provided with through holes over their periphery. Housing has passage which is used for communicating the sections of pipe line interior located before and after section by means of holes in disks and circular passage. EFFECT: enhanced efficiency of cleaning due to forming flow of product being pumped in immediate vicinity of surface being treated. 4 cl, 2 dwg