CLEANER FOR CLEANING TUBING PIPES OF ASPHALT-RESIN-PARAFFIN DEPOSITS Russian patent published in 2004 - IPC

FIELD: oil extracting industry. SUBSTANCE: device has body fixed on wire, which body includes at least two jointly connected rods. On lower end of body a load is fixed. Along the perimeter of body cleaning members are rigidly fixed in detachable connection. On each rod of body one pair of cleaning members is fixed, which members are mounted on diametrically opposite sides of body and displaced relatively to each other along body axis for no less than half of cutting member length. Each following pair of cleaning members on a rod is displaced relatively to pair of cleaning members on a previous rod for 90 degrees. Each cleaning member consists of a plate with double-edged edges oriented along body axis and of a cutting member rigidly fixed on plate end in parallel to body axis and made in form of diamond-shaped plate convex towards cleaned pipe. Direction of larger diagonal line of plate is congruent with body axis, and sides are cutting edges with one- sided edge in direction of cutting member inner surface. On outer convex surface of cutting member a depression is made, and cutting edges are bent inwards towards a plate with double-edged edges. Cleaning members are fixed on body with possible change of transversal dimensions of cleaner. EFFECT: increased cleaning effectiveness. 4 cl, 3 dwg