Application of High Pressure Cleaning Machine in Desilting of City Water Pipeline

The construction pace of modern cities in our country is getting faster and faster, and the scale of cities is constantly expanding. The scale of infrastructure that is suitable for them has also been continuously expanded. The amount of water used in cities is increasing, the displacement is also getting larger, and the management of sewage pipelines is increasing. There are more and more jobs for maintenance, maintenance, and dredging. Among them, the dredging of sewage pipelines is very important and has now become a work that can not be ignored by the relevant departments. Due to the frequent inhabitants of dumping sewage and other sundries as well as cement mortar on the construction site in the sewers, these debris are precipitated and deposited. Excessive siltation will result in blockage of the pipeline. If it cannot be cleared and dredged in time, it will cause overflow of sewage, pollute the environment, cause economic losses, and cause problems for residents' lives.
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? ? According to the above situation, the relevant departments have adopted many methods to solve the dredging in the sewers, but they are not very ideal. They are as follows:
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? ? 1. Mechanical dredging method
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? ? Mechanical dredging method is a method commonly used in China. The specific method is: first pass the TT piece through the pipe section that needs clearing, one end of the TT piece is tied with a wire rope, and the rope is tied with one end of the Qingtong tool. Each winch on the two sections of the pipe section is equipped with a winch. After the TT piece passes through the pipe section, the steel wire rope is tied to a winch. The other end of the clear tool is connected to another winch through a steel wire rope, and the winch is used to reciprocate back and forth. Twisting wire ropes drives the Qingtong tool to hang the sludge into the downstream inspection wells so that the pipelines can be cleared. The power of the winch can be either manual or motorized, depending on the actual situation.
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? ? The mechanical dredging method is applicable to various diameters of sewers. It is mainly aimed at the serious fouling of the pipelines, the dense bonding of silt, and the fact that the effect of water clearing is not good. However, this method also has deficiencies. For example, Workers are labor-intensive and need to manually go down to deliver TT tablets from one wellhead to another. Due to the poor working environment underground, it is easy to cause safety accidents.
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? ? 2. Hydraulic force reduction method
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? ? Hydraulic silting method is to make a dredging device capable of retaining water. The inspection well is put into the pipeline. Because the wellhead is small in size, the whole device cannot be put down. Generally, the components of the dredging device are firstly transported and then assembled in the pipeline. method. After the dredging device is assembled, it is placed in a certain position of the pipeline and the sewage in the pipeline is blocked upstream of the device. When the water level reaches a certain height, the water is discharged, so that the upstream water forms a water stream to remove the sediment in the pipeline. When the sediment is washed away, the dredging device moves downstream and the water collecting and dredging are performed. Although this method can remove siltation, a considerable amount of work needs to be performed inside the pipeline. And the sludge has a very high water content. The sewage in the pipeline must also have a certain amount of flow. The sludge should not be too much. The upstream sewage cannot flow away from other branches. It must also ensure that the upstream water does not flow back to the nearby buildings. Otherwise, although a gas plug is used in a pipeline somewhere, because the pipeline system is connected in a vein, one site is blocked, and the upstream sewage can also flow to another pipe segment, and this can not accumulate water in the pipeline. Cannot move downstream. The consequence is that only water can be used to flush the vehicle or to flush it from another place, which is both labor and water.
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? ? In response to the above problems, the relevant departments proposed a plan to use a high-pressure cleaner to dredge the urban sewage pipelines. After tests have proved that the effect is very significant.
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? ? The working principle of high pressure washer on dredging of urban sewage pipelines:
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? ? Pressure washer is a cleaning equipment widely used in pipelines. In the dredging application of urban sewage pipelines, the equipment is mainly composed of a high-pressure cleaning vehicle equipped with a large-scale water tank, a motorized hose reel, and a pipe cleaning nozzle. Its working principle is to use high-pressure pump to convert the mechanical energy of the power source into pressure energy. Water with high-strength pressure passes through the small hole of the high-pressure nozzle, and then converts the pressure energy into kinetic energy, thereby forming a high-speed micro water jet, using high-pressure water jets. The powerful impact impacts the object to be cleaned, peels and removes the dirt, thereby achieving the purpose of cleaning. During actual work, the high-pressure pump is driven by the engine of the car, and the water is pressurized and sent to the pipe cleaning nozzle. The reaction force generated by the high-pressure water jet causes the pipe cleaning nozzle and the high-pressure hose to travel together in the opposite direction while cleaning the pipe wall. The water sprayed by the sprinkler jets the residual sediment on the inner wall of the pipeline to the downstream inspection well and is sucked by the suction truck. When the spray head reaches a certain distance, the motorized winch winds the hose back. This cleaning method is applicable to various diameters of sewer pipes. Purified water can be recycled and used to reduce the cleaning cost.
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? ? Comparing the above dredging methods, we can clearly find that the use of high-pressure cleaners has the advantages of simple operation, high work efficiency, no environmental pollution, wide application range, and energy saving for the dredging of urban sewage pipelines.
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? ? Finally, we need to remind everyone that regardless of the use of any of the above cleaning methods, we must pay attention to safety issues. Since the sewage in the sewer pipe usually precipitates gases such as hydrogen sulfide, carbon dioxide, and methane, some of the production effluent will also evolve gases such as benzene and gasoline, which, when mixed with the nitrogen in the air, can form explosive gases. The specific approach is: First, operators must prepare labor protection equipment, and secondly, they must first detect the gas in the well before going down the well. If they encounter toxic gases or lack of oxygen, they must take effective measures. In addition, working in the well, you can not point to open fire or smoking. Wear a gas mask with a gas mask and wear a protective belt with a rope. There must be other operators on the well to provide necessary assistance to the underground personnel in due course to avoid accidents.