Patent ID: 6086109
Filing Date: 2000-07-11
Classification: F16L,Y10S

Abstract:
A conveying pipe for hydraulically transporting solids, the conveying pipe having a total length and a first end at an entry side and a second end at an exit side, the ends having end faces, the conveying pipe comprising a pipe portion having a length shorter than the total length of the conveying pipe, the pipe portion having an outer surface, further comprising a first coupling flange connected to an end of the pipe portion at the entry side and a second coupling flange connected to an end of the pipe portion at the exit side, the coupling flanges protruding radially beyond the outer surface of the pipe portion, wherein the coupling flanges have end faces, wherein the end face of each coupling flange extends in a transverse plane with the end face of the conveying pipe, wherein the first coupling flange has a greater width in an axial direction thereof than the second coupling flange, wherein the first coupling flange is an integrally connected component of a sleeve having a circumferential coupling groove, the sleeve having an end facing away from the first coupling flange and engaging over the first end of the pipe portion, the sleeve having an inner end face welded to the outer surface of the pipe portion, the pipe portion being composed of a single layer, a wear ring of a material having a greater resistance to wear than a material of the pipe portion being embedded in the sleeve between an end face of the pipe portion on an entry side thereof and a transverse plane extending through the end face of the conveying pipe at the first end thereof, and wherein the second coupling flange is an integrally connected component of a welding flange portion having an axially extending annular portion, the annular portion being butt-welded to an end face of the pipe portion at an exit side thereof.