Bimetal wear-resistant flame-retardant pipe

Abstract

The utility model relates to the technical field of flame-retardant pipes, in particular to a bimetallic wear-resistant flame-retardant pipe which comprises two groups of metal outer pipes, the metal outer pipes are connected with metal inner pipes through four groups of connecting rods, and flame-retardant arc plates are arranged on the outer sides of the metal inner pipes and located among the four groups of connecting rods. Flame-retardant sand made of flame-retardant mortar is arranged between the four sets of flame-retardant arc plates and the metal outer pipes, and a connecting assembly is arranged between the two sets of metal outer pipes in a sleeved mode. According to the flame-retardant pipe, the heat insulation effect of the flame-retardant pipe can be effectively improved, meanwhile, a certain expansion space is reserved for the metal inner pipe, meanwhile, the metal inner pipe is limited to a certain degree, the metal inner pipe cannot crack during expansion, the service life of the flame-retardant pipe is prolonged, meanwhile, two sets of metal outer pipes can be connected through the connecting assembly, and the flame-retardant effect is improved. The metal outer pipe can be conveniently spliced; compared with the existing double-metal wear-resistant flame-retardant pipe, the double-metal wear-resistant flame-retardant pipe has the advantage that the overall practicability of the double-metal wear-resistant flame-retardant pipe can be improved through the design.