Plastic corrugated pipe with steel belt reinforcement and its manufacturing process and equipment

Abstract

The invention discloses a plastic corrugated pipe with steel belt reinforcing bodies. The plastic corrugated pipe consists of multiple layers; each steel belt reinforcing body is a combined ring-shaped annular body corrugated unit with a closed section; the ring-shaped annular body corrugated units are sequentially arrayed on the surface of a pipe inner layer. By virtue of the steel belt reinforcing bodies, the circular rigidity of the pipeline is increased, and the bearing capacity is greatly enhanced; the steel belt reinforcing bodies are applicable to plastic corrugated pipes with the pipe diameter of 600mm-3000mm; the plastic corrugated pipe is low in cost, and a production device is reliable.

Description

technical field [0001] The invention generally relates to a sewage conveying pipeline, in particular to a sewage conveying pipeline which can be used in plastic pipeline systems with a diameter greater than 600mm. Background technique [0002] Currently used drainage and sewage pipes generally use concrete pipes, polyethylene pipes, polyvinyl chloride pipes and steel pipes. Especially for sewage discharge, concrete pipes and steel pipes are unsuitable, while polyvinyl chloride pipes are generally small in diameter due to material and process limitations, while high-density polyethylene pipes are widely used in large-diameter pipes. However, large-diameter polyethylene pipes are commonly used with structural wall pipes. Although they can be used for 50 years, the cost is high, and the ring stiffness of the pipe is not high, the maximum is only 8KN / m 2 At present, there is a polyethylene spiral pipe reinforced with open steel belt on the market. The ring stiffness of this pip...

AI Technical Summary

Problems solved by technology

However, large-diameter polyethylene pipes are commonly used with structural wall pipes. Although they can be used for 50 years, the cost is high, and the ring stiffness of the pipe is not high, the maximum is only 8KN / m 2 At present, there is a polyethylene spiral pipe reinforced with open steel belt on the market. The ring stiffness of this pipe has been improved, which can reach 16KN / m 2 , The weight has also been reduced; but there are still defects in actual use, one is the sealing and strength of the connection, and the other is the connection method between the steel belt and the plastic, which is easy to make the pipeline in use, in the underground soil pressure and underground conditions. Under changing conditions, the open-type reinforced steel belt of the pipe will produce a sheared plastic layer, causing hidden safety problems

The polyethylene double-wall corrugated pipe has great advantages: convenient connection, light weight, but small pipe diameter, only below 500mm, and the ring stiffness is not high, so it is not very common to be restricted in practical applications.

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