Internal rib reinforcing outer ripple type plastic twining structured wall pipe and manufacturing method thereof

Abstract

The invention relates to an internal rib reinforcing outer ripple type plastic spirally twining structured wall pipe, which comprises a cylindrical surfaced pipe main body and a reinforcing rib wound outside of the pipe main body. The reinforcing rib contains an inner reinforcing rib vertical to the pipe wall, wherein the inner rib divides the reinforcing rib into two parallel hollow cavities. The upper part of the reinforcing rib and the top of the inner rib are both provided with a solid bulge. A method for manufacturing the plastic reinforcing pipe of the invention comprises the steps of: continuously extruding a plastic abnormal strip with two tubular bulges and containing a hollow cavity inside through a first plastic extruder, continuously, regularly, spirally twining the plastic abnormal strip on a formed roller in parallel, at the same time, extruding fused plastic gel in a clearance between adjacent side walls of the spirally wound plastic abnormal strip through a second plastic extruder, rolling two projected tubular cavities corresponding to two sides of the clearances connected by fusing the adjacent plastic abnormal pipe through a rolling wheel which is arranged at the corresponding part on the periphery of the formed roller with a slot structure, forming an outer projected reinforcing rib of the pipe outer wall by fusing the two tubular bulges, and extruding the residual fused gel in the clearance by the rolling wheel so as to form the solid bulge.

Description

technical field [0001] The invention relates to an inner-rib-reinforced outer corrugated plastic winding structure wall pipe and a manufacturing method thereof. The outer corrugated reinforcing rib of the pipe contains a reinforcing rib perpendicular to the pipe wall. Background technique [0002] In the construction of municipal sewage pipelines, in order to reduce sewage leakage and protect groundwater sources and soil from pollution, large-diameter plastic drainage pipes are widely used. Buried self-flowing drainage pipes generally bear low internal pressure, and it is mainly necessary to improve the resistance to external extrusion of the soil. This requires on the one hand to increase the ring stiffness of the pipe, and on the other hand, to improve the joint effect of the pipe and soil by increasing the bonding area between the pipe and the soil and strengthening the compactness of the backfill to improve the compression resistance of the pipe. Steel belt reinforced p...

AI Technical Summary

Problems solved by technology

The biggest weakness of this kind of pipe is that the welding position is at the weakest part of the pipe (such as figure 2 .b, 9 welding positions), and the welding surface is small and the amount of melt glue is small, which reduces the overall bending strength of the pipe

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