Filter frame type rainwater pretreatment device

Abstract

The invention relates to the technical field of rainwater pretreatment, in particular to a filter frame type rainwater pretreatment device. The device comprises a well body, wherein a water inlet pipe and a water outlet pipe are connected to two side walls of the well body respectively, a cover plate is arranged at the top of the well body, retaining walls and a filter frame are arranged at the bottom of the well body, a semi-closed type filter screen is fixed on the filter frame, the retaining walls are axially vertical to the water inlet pipe, two ends of each retaining wall are connected with the inner wall of the well body, gaps are reserved between the tops of the retaining walls and the top of the well body, the filter screen is erected in the gaps between the top of the retaining walls and the top of the well body through the filter frame, openings are formed in the top of the filter screen and in the end part, facing the water inlet pipe, of the filter screen, and the end parts of the openings of the filter screen are in tight contact with the inner wall of the well body. Rainwater pretreatment is completed in a combination manner of gravity settling and the filter screen, after treatment, floating objects contained in rainwater are blocked and gathered in the filter screen, particulate matters in the rainwater deposite at the bottom of the chamber among the retaining walls after blocked by several retaining walls, and water can be prevented from being polluted.

Description

technical field [0001] The invention relates to the technical field of rainwater pretreatment, in particular to a filter frame type rainwater pretreatment device. Background technique [0002] Rainwater falls to the ground to form runoff, which will contain a large amount of particles such as sediment and floating matter. If the particles and suspended matter in the rainwater are not intercepted and discharged directly to natural water bodies, the natural water bodies will be polluted. At present, most of the rainwater The disposal method of filter screen is adopted, but this method has a single form and can only remove floating objects, but cannot remove particulate matter in rainwater. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a frame-type rainwater pretreatment device that can simultaneously remove floating matter and particulate matter in rainwater. [0004] The technical solution of the present i...

AI Technical Summary

Problems solved by technology

[0002] Rainwater falls to the ground to form runoff, which will contain a large amount of particles such as sediment and floating matter. If the particles and suspended matter in the rainwater are not intercepted and discharged directly to natural water bodies, natural water bodies will be polluted. At present, most of the rainwater The disposal method of filter screen is adopted, but this method has a single form and can only remove floating objects, but cannot remove particulate matter in rainwater

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