Lance tip construction

A tube cleaning lance tip construction comprising a body portion having a longitudinal axis and an outer surface, first bore means in said body portion for receiving high pressure liquid, second bore means in communication with said first bore means and extending through said body portion to said outer surface for causing liquid to be ejected with a lateral component creating a reactive force for biasing said body portion toward said tube, blade means on the opposite side of said body portion from said second bore means for removing incrustations from the inside of said tube, stabilizing means extending laterally outwardly from said body portion, said stabilizing means extending longitudinally of said body portion on the side of said body portion intermediate said second bore means and said blade means, said stabilizng means being located on the side of said body portion which follows said blade means and precedes said second bore means during rotation of said body portion, and second stabilizing means on the opposite side of said body portion from said first stabilizing means.

A tube cleaning lance tip construction comprising a body portion having a longitudinal axis and an outer surface, first bore means in said body portion for receiving high pressure liquid, second bore means in communication with said first bore means and extending through said body portion to said outer surface for causing liquid to be ejected with a lateral component creating a reactive force for biasing said body portion toward said tube, blade means on the opposite side of said body portion from said second bore means for removing incrustations from the inside of said tube, stabilizing means extending laterally outwardly from said body portion, said stabilizing means extending longitudinally of said body portion on the side of said body portion intermediate said second bore means and said blade means, said stabilizing means being located on the side of said body portion which follows said blade means and precedes said second bore means during rotation of said body portion, and second stabilizing means on the opposite side of said body portion from said blade means.

A tube cleaning lance tip construction comprising a body portion having a longitudinal axis and an outer surface, first bore means in said body portion for receiving high pressure liquid, second bore means in communication with said first bore means and extending through said body portion to said outer surface for causing liquid to be ejected with a lateral component creating a reactive force for biasing said body portion toward said tube, blade means on the opposite side of said body portion from said second bore means for removing incrustations from the inside of said tube, stabilizing means extending laterally outwardly from said body portion, coupling means on said body portion for attachment to a lance, said first bore means comprising a first bore extending longitudinally of said body portion and counterbore means proximate said coupling means and in communication with said first bore for limiting friction of liquid flowing through said lance tip, and said second bore means comprising a plurality of second bores extending between said first bore and the outer surface of said body portion.