Pipe network runoff purification device based on rotational flow sand setting principle

Abstract

The invention relates to a pipe network runoff purification device based on a rotational flow sand setting principle, and belongs to the technical field of sewage treatment. The device comprises a tank body, a water inlet pipe, a water outlet pipe, a flow guide plate, a supporting body, an energy dissipation grating and a sand collecting hopper, the water inlet pipe is connected into the cylindrical tank body at a low position in the tangential direction of the tank body, the water outlet pipe is connected out of the tank body at a high position in the tangential direction of the tank body, and the outer edges of the water inlet pipe and the water outlet pipe are tangent; axes of the water inlet pipe and the water outlet pipe are on the same vertical plane; a half-moon-shaped guide plate is arranged between the upper edge of the opening of the water inlet pipe and the lower edge of the opening of the water outlet pipe in the horizontal direction; wherein a support body is arranged at the bottom of the tank body, an energy dissipation grid is supported on the support body, and a sand collecting hopper is formed in a tank body space below the energy dissipation grid; and the energy dissipation grid is a split type grid, and a plurality of fan-shaped grids form a complete circular grid. The invention effectively overcomes the defects of an existing rotational flow sand setting device for the drainage pipeline.

Description

technical field [0001] The invention relates to a sand settling device for removing mud and sand in drainage pipes, in particular to a pipe network runoff purification device based on the principle of swirling sand settling, and belongs to the technical field of rain / sewage treatment. Background technique [0002] Solid particles such as mud and sand in rainwater pipes are discharged into the water body with the runoff of rainwater, which will cause pollution of the receiving water body, and the deposition of particles in the pipes will seriously affect the drainage capacity of the system, which is an important factor causing urban waterlogging. Cyclone grit chamber technology has been successfully applied in the field of sewage treatment, but most of these grit chambers are used at the front end of sewage treatment plants, which are characterized by large flow rates, need for power agitation, and complex pool types. In order to avoid pipeline deposition, rainwater pipelines...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned defects of the prior art, the present invention designs a pipe network runoff purification device ba...

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