municipal drainage pipeline repair pretreatment solution

　　drainage pipeline is an important part of urban infrastructure, which is of great significance to urban environmental protection, urban construction and economic development. With the development of the city, the scale of urban underground drainage pipe network is expanding, like the human body's vascular system, complex. When the drainage pipe is ruptured or blocked, it will directly affect the smooth operation of the urban drainage pipe, affect the surrounding environment, and even cause serious accidents. With the improvement of people's requirements for the urban environment, the disadvantages of traditional excavation repair, such as affecting traffic and damaging the environment, have become increasingly apparent.

Trenchless repair requires high pretreatment of pipelines,the pipeline pretreatment is not clean, it will shorten the repair life, or even fail to complete the repair. I have sorted out some difficulties and solutions in pipeline pretreatment, and I hope it will be helpful to everyone.

1. Root accumulation in pipeline

can use the chain cutter nozzle, whichhas the strongest cutting force and a larger cutting range. The toolbox comes standard with different specifications of chain chains, bicycle chains and chain chains with blades, which can effectively remove various root blockages in the pipeline. This product is also suitable for scaling, limestone removal. Applicable pipe diameterDN200-DN600

2. Pipe with grout

If there is a small amount of cement slurry in the pipeline or cement slurry is hardened at the bottom of the pipeline, a vibration nozzle can be used.the nozzle isthe eccentric nozzle, you can jump forward in the pipe; hard head on the one hand can hit loose the bottom of the pipe, limestone, etc., but also to avoid falling into the pipe interface; it is recommended to cooperatethe use of CCTV, you can understand the use effect and work progress.

If there is a large amount of cement slurry in the pipeline or the whole pipe is blocked by cement slurry, a cement slurry remover can be used.This product uses strong torque and speed to break through the solid cement slurry and is a sharp tool for removing cement slurry. The product consists of three parts: fuselage, support frame and drill pipe. Body: standard long80cm (shortest 65cm) to power the drill. Support frame: support the drill pipe so that the drill bit is kept in the center of the pipe, and the lower wheel can easily enter the inside of the pipe. Drill pipe (including drill bit):50cm, the length of the drill pipe can be adjusted according to the length of the pipe. Even if the drill pipe is lengthened to 15m, it can still easily break through the concrete brick wall. The drill can also be replaced by customers according to their own needs, and can be used to solve problems such as cutting roots, removing and repairing failed linings.

3. There is a large amount of sediment or gravel at the bottom of the pipeline.

can use the nozzle of the tube bottom cleaning machine, which has9 rear nozzles with different angles can easily reach and clean round or square pipes. The design of the sled shape can make the nozzle easily pass through obstacles, while the rear tilted rear part makes the nozzle not easy to get stuck when pulled back. The enhanced nozzle is added with 7 additional nozzles perpendicular to the pipeline (which require high flow rate of cleaning vehicles and are generally not recommended) to clean the pipe wall at the same time. This product is suitable for: round pipes or flat pipes with DN>400.

4. There is grease, a large amount of silt in the pipeline or there is mud on the surface of the pipeline that is difficult to remove

can use multi-function rotating nozzle, which is the most powerful nozzle in the rotating series. All the water is lased from the nozzle under strong pressure to clean the pipe wall with high quality. Optional maintenance package for routine maintenance of the nozzle. The product is suitable for: large diameter dredging, cement slurry, roots, grease and pipeline all-round cleaning.

5. Piping, such as roots, cement blocks, grease and other hard objects and failed linings.

available pipe cutting robot, this product relies on a strong pneumatic cutting system, stable operating system and stable chassis, can remove all kinds of complex working conditions in the pipeline (roots, cement blocks, grease and other hard objects) andCIPP repair assistance (removal of failed linings, main pipe openings, cutting of branch pipes, etc.). A car body can meet the pipe diameter of 300-600mm at the same time, and the maximum pipe diameter of DN1000 can be repaired by adding extension fittings. It is a pipeline repair system that can be used in various harsh environments.

municipal drainage pipeline repair pretreatment many difficulties,there is no product or method that can be used all over the world. Only by selecting appropriate products and methods according to actual working conditions can these problems be solved efficiently.