Method for clearing sewage pipeline

Abstract

The invention discloses a method for clearing a sewage pipeline, and relates to the technical field of pipeline clearing. The method comprises the following steps: S1, the upstream is blocked; S2, flushing is conducted, specifically, a high-pressure water gun is used for flushing sludge on the inner wall of the to-be-repaired pipeline, and a pumping pump is used for actively pumping sewage away tothe downstream while flushing is conducted; S3, the downstream is blocked; and S4, drying is conducted, specifically, warm air is continuously introduced into the to-be-repaired pipeline till the inner wall of the to-be-repaired pipeline is dry. According to the method, firstly, the upstream of the to-be-repaired pipeline is blocked; then the inner wall of the to-be-repaired pipeline is flushed through the high-pressure water gun, thus the sludge on the inner wall of the to-be-repaired pipeline is diluted and then pumped away by the pumping pump, clearing is more convenient, and evacuation isquicker; then after the inner wall of the to-be-repaired pipeline is flushed to be clean, the downstream is blocked through the same method; finally, the inner wall of the to-be-repaired pipeline isventilated and dried; and it is guaranteed that no water drop and the sludge adhere to the inner wall of the to-be-repaired pipeline, dryness and cleanliness are kept, and hardening and tight attachment of a liner pipe in the later period are convenient.

Description

technical field [0001] The invention relates to the technical field of pipeline cleaning, in particular to a cleaning method for sewage pipelines. Background technique [0002] With the development of cities, underground sewage pipes are becoming more and more complex, refer to figure 2 , which is the common layout of the sewage pipeline and its upstream wellhead and downstream wellhead. Under the increasing traffic pressure, since the sewage pipes are buried under the road for a long time, they are prone to defects such as cracks and deformations. It is necessary to repair the pipes in time to avoid damage to the pipes and affect the discharge of underground sewage. However, the traditional method of excavating and repairing pipelines should not be carried out in rainy days, which makes the whole repair speed slow and takes a long period, seriously affecting traffic and road appearance. [0003] The Chinese patent with the patent publication number CN101907213A proposes a...

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: due to the rich organic matter in the sewage, the flammable gas content in the pipeline to be repaired is relatively high, and it is inconvenient for workers to enter the pipeline to be repaired for manual cleaning, and the sewage is in the pipeline to be repaired. During internal discharge, the impurities in it tend to precipitate and form sludge, which eventually adheres to the inner wall of the pipeline to be repaired, making it even more difficult to clean thoroughly, which makes it difficult for the liner to fit closely with the inner wall of the pipeline to be repaired during later repairs , resulting in a poorly repaired

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