Air seal type drainage pipeline flow adjusting device and pipeline anti-deposition and anti-backflow facility

Abstract

The invention provides an air seal type drainage pipeline flow adjusting device which comprises a box body and a solar fan. A baffle is arranged on the upper edge of the front side plate of the box body; a water inlet and a water outlet are respectively arranged in the lower edge of the front side plate and the rear side plate; three partition plates are evenly distributed in the box body in the front-back direction. The three partition plates are alternately arranged vertically, the front partition plate and the rear partition plate are connected with the bottom plate of the box body, the middle partition plate is connected with the top plate of the box body, an inspection hole with a cover plate is arranged in the top plate of the box body, an air inlet pipe and an air outlet pipe whichare automatically opened and closed are further arranged on the front portion of the top plate, and the solar fan is connected with the air inlet pipe through a pipeline. The positive pressure air seal in the box body is adopted to disconnect the hydraulic connection of the front and rear pipelines and release the air in the box body to re-connect the front and rear pipelines so that the pipelineflow regulation control is realized. The device can be used for a drainage pipeline to achieve pipeline deposition prevention and can also be used for the tail end of a submerged outflow self-drainagerainwater system to achieve pipeline backflow prevention and is low in operation cost, convenient to operate and manage and convenient to apply and popularize.

Description

technical field [0001] The invention belongs to the field of municipal drainage pipelines, and relates to an air-sealed drainage pipeline flow regulating device and pipeline anti-sedimentation and anti-backflow facilities. Background technique [0002] Urban rainfall runoff pollution has become one of the main reasons for the deterioration of urban water quality, among which the overflow pollution of combined pipes, mixed sewage and initial rainwater have become the main factors for the deterioration of urban water environment. The oxygen-consuming substances and nutrient salts in the outflow of the drainage system mainly come from surface runoff, dry sewage and pipeline sediments, and the contribution of pipeline sediments to the outflow pollution load is relatively high. In combined drainage pipes and diversion rainwater pipes, sediments are mainly produced during the dry season flow and decelerated flow during rainstorms. These sediments will be resuspended as the flow ve...

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Problems solved by technology

[0004] Conventional drainage pipeline anti-deposition methods mainly include hydraulic cleaning, pipeline desilting, etc. Most of the methods are off-line. Although simple, they require a lot of manpower and material resources, and the implementation period is long, so they cannot effectively prevent pipeline sedimentation

Conventional anti-backflow of river water mostly adopts the method of installing flap gates at the end of the pipeline. There are many flap gate devices, heavy weight, large head loss, and poor sealing performance after a long time. It is difficult to apply in river network areas due to the drainage pressure difference. Serious backflow of pipeline river water

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