Continuous winding reinforced corrugated pipe and its manufacturing method

Abstract

The invention discloses a continuously wound reinforced corrugated pipe and a preparation method thereof. The pipe comprises a continuous solid-wall cylindrical pipe body formed by lapping and fusing a plurality of spirally wound special rods of which the two sides are provided with butting wings through the wings; a plurality of hollow reinforcing ribs are spirally wound on the pipe wall of the cylindrical pipe body; each hollow reinforcing rib comprises at least one special single-wall corrugated reinforcement pipe which is spirally wound on the pipe wall of the cylindrical pipe body through a reinforcement adhesive layer, and an outer reinforcement layer which is spirally wound, spans and presses on the special single-wall corrugated reinforcement pipe and of which two ends are adhered to the pipe wall of the cylindrical pipe body; the center line of each hollow reinforcing rib is overlapped with the center line of a lapping and fusing part of wings of an adjacent special rod. The pipe is high in stability and welding effect, the crest height of the pipe is higher than that of a double-wall corrugated pipe, the continuously wound reinforced corrugated pipe can be produced by matching common wound pipe production equipment with a suitable die, and equipment investment is small.

Description

technical field [0001] The present invention relates to a method for manufacturing a continuous winding reinforced corrugated pipe. Background technique [0002] In urban sewer pipes and various sewage pipes, various forms of plastic pipes are used more and more. Since there is usually no pressure in the pipe, in order to improve its resistance to external pressure or impact, plastic pipes with different forms of reinforcing rib structures on the outer periphery of the pipe wall have been widely used. At present, the plastic pipes of this structure and the corresponding preparation methods can be as follows: a plastic pipe formed by direct extrusion. The most representative ones are double-wall corrugated pipes and annular reinforced pipes formed by direct extrusion. The inner wall layer is a continuous and smooth surface, and the outer wall layer is a hollow corrugated structure or a solid annular rib structure, respectively. The axial partial cross-sectional structures o...

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