an urban drainage system

Abstract

The invention belongs to the technical field of urban drainage, and specifically relates to an urban drainage system, which includes a cylindrical door body; a flange plate is fixedly connected to one side of the door body, and an inclined contact surface is provided on the other side of the door body. A rubber sealing ring is installed on the surface; the top of the door body is hinged with a door cover through a bracket, and the door cover is used to seal the door body; a set of sliding holes are opened on the contact surface, and a piston is connected to the sliding seal in the sliding hole, and the piston is close to the contact surface. One side is fixedly connected with a push rod, and the push rod extends to the outside of the door body; a group of damping holes are evenly distributed on the upper circumference of the piston, and a spring is fixedly connected between the piston and the bottom of the sliding hole; the piston is soaked in the hydraulic oil in the sliding hole; The invention uses the door cover to push the ejector rod to reduce the rotation speed of the door cover, reduce the rigid impact of the door body, reduce the wear of the sealing ring, and further increase the sealing performance of the door cover and the door body.

Description

technical field [0001] The invention belongs to the technical field of urban drainage, in particular to an urban drainage system. Background technique [0002] Urban drainage is a drainage method in which urban sewage and rainwater are collected, transported, treated and discharged by the urban drainage system. [0003] The urban sewage drainage system usually refers to the drainage system that mainly collects and discharges domestic sewage, and mainly includes the following parts: [0004] (1) Indoor drainage system and equipment. Various indoor sanitary appliances (such as toilets, cesspools, washbasins, etc.) and production workshop drainage equipment play the role of collecting sewage and waste water, and they are the beginning of the entire drainage system. Domestic sewage and industrial wastewater flow into the block (factory, neighborhood or courtyard) sewage pipe system through indoor sewage pipe systems such as water seal pipes, branch pipes, standpipes, main pipe...

AI Technical Summary

Problems solved by technology

[0010] In order to make up for the deficiencies of the existing technology, solve the problem that when the drainage pipeline does not perform drainage work for a long time, the accumulated sludge and impurities in the drainage pipeline continue to ferment to produce biogas, which makes the concentration of the biogas pipeline in the drainage pipeline continuously increase, causing serious damage. Safety threat, the existing technology can not discharge the biogas in the drainage pipe well, and at the same time, the branches near the flap door will get stuck in the pillar flap door due to the movement of the water flow, resulting in the decline of the flap door sealing performance. The invention proposes a urban drainage system

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