Rainwater pipeline rotational flow grit chamber

Abstract

A rainwater pipeline rotational flow grit chamber comprises a grit chamber body, a water inlet pipe, a water outlet pipe and a sand collecting hopper arranged at the bottom of the grit chamber body. The bottom face of the grit chamber body is inclined, the top of the grit chamber body is provided with a guide plate in an inverted circular truncated cone shape, a center shaft of the guide plate coincides with a center shaft of the grit chamber body, the walking direction of the water inlet pipe is in tangent with the side wall of the grit chamber body, the cross section of the water inlet pipe is in square, the initial end of the water outlet pipe is connected with the lower edge of the guide plate, a center column is arranged above the sand collecting hopper to prevent sediment falling into the sand collecting hopper from overflowing, a sand pump is arranged in the sand collecting hopper, and the sediment in the sand collecting hopper is pumped to the ground through the sand pump via a connecting pipe internally penetrating through the center column. According to the rainwater pipeline rotational flow grit chamber, high sand removing efficiency is kept without arranging a paddle and a filtering device, operation management is conveniently carried out, and the rainwater pipeline rotational flow grit chamber is suitable for reduction control over the rainwater pipeline sediment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a device for separating sediment in a municipal rainwater pipeline, in particular to a cyclone grit chamber for a rainwater pipeline. Background technique [0002] A large amount of sediment and other solid particles carrying various pollutants are discharged into the water body through the urban municipal rainwater pipes with the rainwater runoff, or accumulate and deposit in the rainwater pipes and gradually release pollutants, posing a serious threat to the safety of the water environment. Cyclone sand settling technology, as an efficient sediment reduction control method, has been widely used in the sediment treatment of rainwater pipelines and rain-sewage combined pipelines abroad, and a variety of commercial cyclone separators have been developed. In China, there are generally no sediment treatment facilities on rainwater pipelines. Some urban rainfall runoff is direc...

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Problems solved by technology

[0003] In order to overcome the disadvantages of inconvenient operation and management in the existing drainage pipe swirl grit chamber, the present invention provides a rainwater pipe swirl grit chamber

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