A method and a device for repairing a small water pipe having an L or T-shaped bent portion

Abstract

PURPOSE: A method and a device for regenerating a small water pipe having an L or T-shaped bent portion are provided to perform a sanding task and an epoxy lining task with respect to an L / T-shaped bent portion and a straight section of a water pipe at high qualities. CONSTITUTION: A method for regenerating a small water pipe is as follows. An internal wall of a water pipe is cleaned with silica sand by using a sanding device. The internal wall of the water pipe is lined with epoxy paints by using a lining device. Operating balls are moved into a position out of a spot where a bent portion of the water pipe is formed after the operating balls are inserted into the water pipe through an inlet of the water pipe by using an operating ball insertion device in at least one initial stage of a sanding process or a lining process, or while proceeding the process. [Reference numerals] (S10) Sanding process-cleaning an internal wall of a water pipe by using a sanding device(10).Operating balls(110) are moved into a position out of a spot where a bent portion of the water pipe is formed after operating balls are inserted into the inside of the water pipe through an inlet of the water pipe by using an operating ball insertion device(100).; (S20) "Lining process-lining the internal wall of the water pipe with epoxy paints by using a lining device after the sanding process. Operating balls(110) are moved into a position out of a spot where a bent portion of the water pipe is formed after operating balls are inserted into the inside of the water pipe through an inlet of the water pipe by using an operating ball insertion device(100)."

Description

technical field [0001] The invention relates to a pipeline cleaning method and device, in particular to a method and device for repairing small water pipes with L-shaped or T-shaped bending parts. Background technique [0002] After long-term use of small bathroom water pipes, the inner wall will be rusted and other aging phenomena, which need to be updated or restored. The patent No. 2002-0053644 discloses a method for renewing water cast iron pipes and water steel pipes after aging, which includes: the first project, determining the working area and working position of the aging water pipe; Cut off the water and cut off the water pipe; the third project is to spray high-pressure water into the cut water pipe, and use the hoist to pull the scraper and wire brush to repeatedly wash the pipe to eliminate scale; the fourth project is to dry the water pipe with a hot air generating device to remove the moisture in the pipe; The fifth project is to apply IRM-3000 primer on the ...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, in the prior art, when the water pipe has a bent part, the position close to the downstream flow line of the bent part (that is, the place where the operation is difficult) is due to the back pressure formed by the flow of silica sand or epoxy-based paint, etc., and the silica sand cannot be effectively reached during the sanding process. At the same time, the epoxy-based coating in the coating project reaches the difficult part of the operation is not small, so after the operation is completed, the thickness of the coating layer at the difficult part is smaller than the average thickness of other areas, and the coating operation effect is not good

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