Composite type plastic pipe with wound netting wire and strengthened bell mouth and manufacturing process thereof

Abstract

The invention relates to a composite type plastic pipe with wound netting wires and strengthened bell mouths, and a manufacturing process thereof. The invention adopts the following technical scheme: the tube ball with a distance of the inner diameter length L to the end part of the bell mouth is a reinforced and thickened wall; the tube wall with a distance of the outer diameter length M to the end part of the bell mouth is a netting wire reinforced wall; and a viscose glue layer, a mark and a protection layer, the wall thickness S, diameter phi and outer diameter D are set according to corresponding ratios; plastic resin mulling-ingredient is utilized as the raw material; and simultaneously, products are manufactured under the synchronous control of a dryer, an extruder, a die head, a die, a vacuum box, a spraying box, a take-up winder, a high-frequency machine, a tractor, a cutter and the like. The technical scheme of the invention overcomes the defect that the axial rigidity of the existing pipe workpiece influences the axial flexibility, geology sinking resistance and tension resistance at the welding part of the bell mouth, as well as the defect that the non-roundness at thejoint of the bell mouth leads the strength and rigidity at the cross section of the joint of the bell mouth of the pipe workpiece to be unable to load tubing pressure when the electrofusion pipe fittings are welded, and the like, thus being suitable for serving as connection pipe workpieces for various water delivery and gas transmission projects, and especially suitable for strengthening pipe walls and thickening the bell mouths of PE, PVC-U, PVC-M and the like.

Description

technical field [0001] The invention relates to a steel wire surrounding and socket reinforced composite plastic pipe and its manufacturing process. Background technique [0002] The existing commercially available plastic pipes generally adopt the treatment method of steel wire mesh reinforcement or steel wire two-way winding reinforcement. The plastic pipes treated by this treatment method are characterized by good axial rigidity, but because of their axial The enhancement of rigidity affects the axial softness, geological subsidence resistance, and the decline of tensile strength at the socket weld; second, for the pipes treated by the aforementioned treatment method, the connection of the two pipe sockets is made by electric In the welding of fusion pipe fittings, due to the high temperature during welding, the two materials, namely steel wire and plastic, are separated due to the different thermal expansion coefficients. In addition, the mutual lateral movement and misa...

AI Technical Summary

Problems solved by technology

[0002] The existing commercially available plastic pipes generally adopt the treatment method of steel wire mesh reinforcement or steel wire two-way winding reinforcement. The plastic pipes treated by this treatment method are characterized by good axial rigidity, but because of their axial The enhancement of rigidity affects the axial softness, geological subsidence resistance, and the decline of tensile strength at the socket weld; second, for the pipes treated by the aforementioned treatment method, the connection of the two pipe sockets is made by electric In the welding of fusion pipe fittings, due to the high temperature during welding, the two materials, namely steel wire and plastic, are separated due to the different thermal expansion coefficients. In addition, the mutual lateral movement and misalignment of the two socket walls during welding make the non-"roundness" of the butt joint of the pipe socket "Increased and it is difficult to guarantee the quality of the butt joint, "roundness" refers to two concentric circles with a radius difference of a certain value on any normal section at the joint of the socket; especially for lower pressure levels (that is, thinner pipe walls) ) pipe, it will be more difficult to ensure the quality of the butt joint due to the non-"roundness" of the pipe socket joint; as a result, the cross-sectional strength and rigidity of the pipe socket joint cannot bear the pressure inside the pipe, causing the pipe wall to bulge and deform , and even cracks, resulting in water and air leakage in the pipeline, resulting in difficulties in maintaining the water supply, gas supply, and liquid supply systems, serious resource loss, and environmental pollution caused by gas leakage; The body is pre-embedded in half of the pipe wall thickness, resulting in a lot of increase in production costs and raw material costs: Fourth: the pipe processed by the two-way winding enhanced treatment method, the winding body is preset outside the entire pipe wall , which brings difficulties in installation and maintenance at the joint of the socket, and the full winding will lead to higher production costs and material costs

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