Unpowered self-cleaning rainwater filtering device

Abstract

The invention belongs to the technical field of rainwater filtering devices and particularly relates to an unpowered self-cleaning rainwater filtering device. The device comprises a water inlet three-way pipe; the water inlet three-way pipe is connected with a water inlet rainwater pipeline, a water storage pipe and a four-way pipe, an air inlet pipe is mounted at the top end of the water storage pipe, a filter screen is mounted at the bottom of the water storage pipe, and the inner side of the water storage pipe is connected with one end of a backwashing pipeline; the backwashing pipeline comprises a vertical pipe, an upper elbow, a transverse pipe, a Venturi pipe and a lower elbow, a drainage pipe connected with the other end of the backwashing pipeline is connected with a four-way pipe, the bottom side of the drainage pipe is connected with the four-way pipe through a seepage pipeline, the bottom end of the drainage pipe is connected with a water outlet rainwater pipeline, a flange blind plate connected with the top of the four-way pipe is connected with the top end of a connecting frame, and a filtering basket is installed at the bottom end of the connecting frame; the combined type design is low in cost and convenient to assemble, transportation, storage, popularization and use of the device are facilitated, water in the water storage pipe can be accelerated through the Venturi pipe under the siphon effect and sprayed out from the lower elbow, and unpowered backwashing of the filter plate is achieved.

Description

technical field [0001] The invention belongs to the technical field of rainwater filtering devices, and in particular relates to a non-powered self-cleaning rainwater filtering device. Background technique [0002] The development of urbanization in my country has led to the increase of impermeable roads in cities, and the sudden urban waterlogging caused by rainstorm runoff has become an important reason for cities to "look at the sea". With the increase of high-rise buildings in the city, in midsummer, building air conditioners and vehicle exhaust will aggravate the city's "rain island effect", and rainfall runoff will carry a large amount of pollutants. However, the maintenance and management of existing urban drainage facilities are poor, and most urban drainage pipe networks are seriously silted up. To solve its silting problem, the filtration at the source is particularly important; the rainwater channel is the primary entrance of roadside drainage, and rainwater grat...

AI Technical Summary

Problems solved by technology

[0003] The sediment and other sundries in the municipal rainwater pipeline are inconvenient to clean, which reduces the drainage efficiency of the rainwater well, which in turn causes the road to accumulate water, thereby affecting traffic. Although the filter screen that can filter sediment and impurities in the rainwater pipeline can be It plays the role of isolation and filtration, but it is difficult for managers to enter the buried pipeline to clean the filter

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