Pipeline joint

Abstract

The invention discloses a pipeline joint. The pipeline joint comprises a cylindrical two-way joint body, wherein a reducing through hole is formed in the two-way joint body in the radial direction and comprises a plastic pipe connection section, a transition section and a cast iron connection section, the inner diameter of the plastic pipe connection section is matched with the outer diameter of the shoulder step at the end of a plastic pipe, the plastic pipe connection section is provided with inner threads, the shoulder step at the end of the plastic pipe is provided with outer threads matched with the inner threads, the inner diameter of the cast iron connection section is matched with the outer diameter of a cast iron pipe, and the transition section is conical. Compared with the prior art, the pipeline joint has the advantages that only one pipeline joint is needed for connection between the plastic pipe and the cast iron pipe with the diameter being different from that of the plastic pipe, the pipeline joint is connected with the plastic pipe through the threads and connected with the cast iron pipe in a welded mode, the connection mode is simple, operation is convenient and rapid, and work efficiency is greatly improved.

Description

technical field [0001] The invention relates to a pipe joint. Background technique [0002] With the development of the economy and the acceleration of urbanization, supporting pipeline facilities are also indispensable. Urban water supply requires tap water pipelines, urban sewage discharge requires sewage pipelines, and natural gas transportation requires natural gas pipelines. The connection and sealing between pipelines is very important. . [0003] In the process of pipeline construction, it is often necessary to connect plastic pipes and cast iron pipes, but due to different damping, the diameters of the two pipes are different. The diameter of plastic pipes is smaller than that of cast iron pipes, so it is necessary to use when connecting The three flanges are plastic pipe end flanges, transition flanges and cast iron end flanges. This connection method requires a large number of flanges, which is very troublesome to install and reduces work efficiency. Contents of...

AI Technical Summary

Problems solved by technology

[0003] In the process of pipeline construction, it is often necessary to connect plastic pipes and cast iron pipes, but due to different damping, the diameters of the two pipes are different. The diameter of plastic pipes is smaller than that of cast iron pipes, so it is necessary to use when connecting The three flanges are plastic pipe end flange, transition flange and cast iron end flange. This connection method requires a large number of flanges, which is very troublesome to install and reduces work efficiency.

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