Seamless joint provided with rubber lined layers

Abstract

The invention provides a seamless joint provided with rubber lined layers used for solving the problems of no corrosion resistance and low sealing property of the seamless joint provided with metal lining rings with son ports and mother ports in the prior art, and simplifying the structure and a production process. The seamless joint comprises a pipeline body, movable flanges, fixed bolts, screw caps and metal lining rings, wherein horn mouths are arranged on two ends of the pipeline body; the movable flanges are arranged on the outer wall of the pipeline body; the inner diameter of the movable flanges is smaller than the diameter of the horn mouths; each metal lining ring is arranged on the inner side of the corresponding horn mouth, and the outer wall of each metal lining ring is matched with the inner wall of the corresponding horn mouth; the rubber lined layers are arranged on the inner wall and the front end face of each metal lining ring; the front end faces of the metal lining rings and the front end faces of the horn mouths are positioned on one plane, the rubber lined layers on the front end faces of the metal lining rings protrude the metal lining rings; the inner diameter of the metal lining rings is greater than the inner diameter of the pipeline body; the inner diameter of the rubber lined layers on the inner walls of the metal lining rings is equal to the inner diameter of the pipeline body.

Description

technical field [0001] The invention relates to the technical field of plastic pipes or plastic composite pipes, especially the joints of plastic pipes or plastic composite pipes. Background technique [0002] The current connection methods between plastic pipes or plastic composite pipes are mostly direct welding, or connecting through movable metal flanges after welding flange roots, or connecting through movable metal flanges after direct flanging. The disadvantage is that it is difficult to repair and replace directly welded pipelines; the use environment of pipelines connected after welding with flanges is limited, and they are easy to break when floating on the water surface; the cost is high; because the welded flanges are produced by injection molding, not pipes It is produced by extrusion molding and is not resistant to wear. For the pipelines connected directly after flanging, because the flanging needs to be done by heating the nozzle, during the heating process,...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems that the joints with metal bushings of female ports are not resistant to corrosion and have low sealing performance, the present invention proposes an improved seamless joint with a rubber lining on the metal bushing, which not only realizes the same internal and external joints of the pipe body There is no welding seam connection, and the structure is simpler and firmer, the sealing is better, the corrosion resistance is better, and the installation and use are more convenient

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