Complete set of equipment and method for hot melt repair of inner wall of underground pipeline

Abstract

The invention discloses a complete set of equipment and a method for hot-melting repairing the inner wall of an underground pipeline. The complete set of equipment includes a plugging device for plugging both ends of a pipeline repair section and a cleaning device for cleaning the pipeline repair section , A conveying device for conveying plastic particles and a melt extrusion molding device, the discharge end of the conveying device is communicated with the feed end of the melt extrusion molding device. By adopting the complete set of equipment and method of the present application, the quality of pipeline repair is improved, the cost of pipeline repair is reduced, and the construction amount of pipeline repair is reduced.

Description

technical field [0001] The invention relates to the technical field of underground pipeline repair, in particular to a complete set of equipment and method for hot-melt repair of the inner wall of an underground pipeline. Background technique [0002] In the underground pipeline repair project, especially the pipeline repair project used in urban rainwater and sewage pipelines, the commonly used techniques include the inversion lining repair method, the ultraviolet curing pipeline repair method, the intubation repair method, the expansion pipe repair method, etc. , among which the inversion lining repair method and the UV curing repair method are the current mainstream processes. Both methods require inserting the fabricated soft lining pipe into the pipeline to be repaired, and then heating the pipeline with hot water and ultraviolet light respectively. By curing, the lining pipe is hardened and tightly combined with the inner wall of the pipeline to be repaired, so as to a...

AI Technical Summary

Problems solved by technology

These methods all have some shortcomings, such as the inner lining layer and the inner wall of the original pipeline are not tightly bonded, the bonding strength is low, the inner lining layer is easy to break away from the collapse and affect the quality of pipeline repair; the lining pipe needs to be pre-processed, and different diameters and sections The shape of the pipe requires a corresponding lined hose, which is more expensive to manufacture and less flexible

In addition, it is necessary to excavate a large auxiliary tunnel at the pipe end, which requires a large amount of construction and has a great impact on traffic

Images