EXPANSION FLEXIBLE JOINT

摘要

The invention provides an expansion flexible pipe joint which eliminates existing baffle ring fixed operation whose operational performance is poor, restrains gaps and would not rust, and reliably performs coating processing. The expansion flexible pipe joint comprises a preset length connecting pipe, a pair of rotary spheres, and a pair of housings. The rotary spheres are relatively slidably embedded into two ends of the connecting pipe on a pipe axis direction in a manner of keeping water tightness, and a part of an outer peripheral surface forms a spherical surface. The housings form inner surfaces of the spherical surface whose outer peripheral surfaces are the same with outer peripheral surfaces of the rotary spheres, the inner surfaces are rotatably and slidably embedded in the outer peripheral surfaces of the rotary spheres in the manner of keeping water tightness. Anti-off blocking components are integrally disposed on an end of a rotary sphere side of the connecting pipe on the outer peripheral surfaces. Male threads and flanges with blocking components are disposed on the outer peripheral surfaces on the other end. A diameter of the male threads is larger than diameters of the rotary spheres. The flanges with the blocking components can be in thread joint with the male threads through female threads disposed on the inner surface, so that the expansion flexible pipe joint can be assembled and unassembled.