Sewage level controlling device of dredging system for sewage pipeline with large-pipe diameter

Abstract

The invention provides a sewage level controlling device of a dredging system for a sewage pipeline with large-pipe diameter, which comprises a gas-charged rubber gate and a ground charging-discharging device. The gas-charged rubber gate comprises a gas-charged rubber leather bag and a positioning mechanism; after being charged with gas, the outer diameter of the gas-charged rubber leather bag isequal to the inner diameter of a downstream pipe section of a dredged pipe section; the center of the gas-charged rubber leather bag is provided with a water passing hole for sewage to pass through transversely, and the water passing hole is positioned at the center of the gas-charged rubber leather bag; and the positioning mechanism fixes the gas-charged rubber leather bag and an inspection welloppositely. The ground charging-discharging device is connected with a gas-charged rubber balloon through an air hose. As a constituent part of the dredging system, the sewage level controlling device is matched with a set of sludge operation unit and controls the sewage in the pipeline at a certain level, later the sludge operation unit stirs up sludge in the sewage, then the sewage level controlling device discharges the sewage quickly and takes away the sludge by water flows. The sewage level controlling device has less energy consumption, small device volume, flexible operation, low manufacture cost and good dredging effect.

Description

technical field [0001] The invention belongs to the technical field of municipal water supply and drainage pipe network engineering, and in particular relates to a sewage water level control device for dredging large-diameter sewage pipes. Background technique [0002] With the expansion of urban scale and the continuous increase of water consumption, the drainage volume of cities is also increasing, and the diameter of drainage pipes is also increasing. At present, the largest diameter of drainage pipes in my country has reached more than 3m, and large-diameter sewage pipes The dredging work is also becoming more and more onerous. [0003] At present, the main dredging methods at home and abroad include winch dredging method, high-pressure water jet dredging method and water scour dredging method. They all have their own shortcomings and deficiencies: the drawworks dredging method is suitable for pipelines of various diameters, but this method needs to manually go down the ...

AI Technical Summary

Problems solved by technology

They all have their own shortcomings and deficiencies: the drawworks dredging method is suitable for pipelines of various diameters, but this method needs to manually go down the well to send bamboo chips. It will endanger the lives of workers; due to the high cost and scouring effect, the high-pressure water jet desilting method is usually limited to pipelines with a diameter of less than 1.3m, and it is difficult to promote it in large-diameter pipelines; the water scouring desilting method requires pipelines It must have a certain flow rate, the silt should not be too much (about 20%), and the upstream water cannot flow away from other branches, and at the same time ensure that the upstream water does not flow back into the nearby buildings, and the scope of application is also greatly limited.

[0004] In addition, there are trencher dredging and Sielwolf system dredging. The trencher dredging requires smooth pipe walls and not too much dirt, and it is difficult to operate in large-diameter pipelines; while the Sielwolf dredging system is bulky and Expensive and limited use

[0005] The above methods have their own shortcomings, and they are not suitable for the dredging of large-diameter sewage pipelines.

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