Improvements in Apparatus for Scaling and Cleaning Steam Boiler, Superheater and like Tubes.

摘要

3410. Kendal, A. B., and Collinson, J. A. Feb. 10. Cleaning internally, non-rotary appliances for.-Apparatus for scaling and cleaning steamboiler and like tubes comprises a series of rotatable rollers e grooved to provide cutting-edges g in planes parallel to the axis of the tube and mounted on spring arms b fixed to the operating-rod, the rollers being arranged with their axes jn the same plane. The rollers are shaped and arranged to conform to the cross-section of the tube so that all the cutting-edges g bear closely against the wall of the tube. The spring arms b are secured to a hollow hub a and twisted about their longitudinal axes. Water is delivered on to the rollers through a perforated plate k on the end of the hub. The rollers are retained on the pivot pins d by linch pins n so that different sets of rollers may be readily interchanged.