HDPE (high-density polyethylene) hollow wall winding drainage pipe with inner fins

Abstract

The invention relates to an HDPE (high-density polyethylene) hollow wall winding drainage pipe with inner fins. The HDPE hollow wall winding drainage pipe comprises a draining pipe body and a reinforcing outer wall, wherein the reinforcing outer wall covers the outer surface of the draining pipe body, the reinforcing outer wall is provided with two reinforcing inner fins which are vertically arranged and are perpendicular to the reinforcing outer wall, the bottoms of the reinforcing inner fins are fused with the surface of the reinforcing outer wall, two arc-shaped reinforcing ribs are inwards arranged on the two reinforcing inner fins, the bottoms of the arc-shaped reinforcing ribs are also fused with the surface of the reinforcing outer wall, a transverse reinforcing rib is arranged between the two arc-shaped reinforcing ribs, both ends of the transverse reinforcing rib are separately fused with the two arc-shaped reinforcing ribs, a V-shaped buckle is arranged between both ends of the outer wall, the space above the V-shaped buckle is filled with PP modified materials which are used for increasing the bearing capacity, the transverse reinforcing rib is used for increasing the stability of the draining pipe, a protective layer is additionally arranged, and the pressure resistance, the impact resistance and the seam stretching capacity are increased. According to the HDPE hollow wall winding drainage pipe, the production efficiency can be greatly improved, the production cost is reduced, and the quality passing percent of products is increased.

Description

technical field [0001] The invention relates to the field of drainage pipes, in particular to a HDPE hollow wall internal rib winding drainage pipe. Background technique [0002] Reinforced HDPE hollow-wall winding drainage pipe is a new type of pipe material that uses HDPE high-density polyethylene as raw material and is formed by hot-extrusion winding. It has the characteristics of good corrosion resistance, smooth inner wall, and small flow resistance that ordinary plastic pipes have. In addition, because of the special reinforced corrugated structure, it has excellent high rigidity, high strength and good toughness, light weight, strong impact resistance, and is not easy to break. As a new type of plastic pipe, reinforced polyethylene winding Due to its strength, the drainage pipe is very suitable for drainage pipeline engineering fields such as rainwater, sewage and wastewater drainage systems. [0003] The outer surface of the existing reinforced HDPE hollow-wall woun...

AI Technical Summary

Problems solved by technology

[0003] The outer surface of the existing reinforced HDPE hollow-wall wound drainage pipe is a spiral wound structure. The entire pipe is not firmly bonded, and it is easy to fall off into a spring shape. According to the national standard, it cannot meet the standard of ring steel. For standard production, the production cost needs to be increased by one-third, and the current product design cannot be realized, so new technical changes are needed to meet the requirements of rigidity, seam tensile and impact resistance.

The ring rigidity of HDPE carat pipe can meet the standard, but the cost is too high, and the product also has shortcomings. The weakest part of the existing single layer is easy to be pierced by hard stones and leak water

In addition, the HDPE inner rib tube is prone to weak bonding and falling off into a spring shape, which cannot meet the ring stiffness standard. If it is to meet the national standard, the cost will increase by one-third more than the original cost, and this product also has the weakest point. , the single layer of the existing design is easy to be broken down by solid stones or foreign objects and leak water. Although the inner rib is added, the overall stability of the existing HDPE reinforced winding drainage pipe with inner rib structure is insufficient, and the inner rib structure is simple, which cannot be overcome. The major defect of weak bonding is that the overall stress is uneven, which is not enough to provide sufficient support, which will affect the compression and impact resistance of the pipe body and the seam tensile capacity. Long-term uneven stress will affect the drainage pipe. service life

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