Rapid primary filtering device for commercial concrete sewage

Abstract

A rapid primary filtering device for commercial concrete sewage comprises a filter shell, the inner wall of the filtering shell is fixedly connected with a first supporting plate, first supporting columns are slidably connected to the inner wall of the first supporting plate, a filter screen is fixedly connected to the upper surfaces of the first supporting columns, the inner wall of the filter screen is slidably connected with the inner wall of the filtering shell, and baffle plates are fixedly connected to the front side and the rear side of the inner wall of the filtering shell and the upper surface of the first supporting plate. When the device filters sewage, a drive motor is turned on to rotate a push plate, a push block moves left and right under the action of a spring, and a supporting bock moves up and down through an inclined surface on the push block in order to increase the downward sliding speed of sands and stones on the filter screen, and the sand and stones clamped on the filter screen are vibrated out, so the situation that sewage cannot quickly pass through the filter screen and the filtering speed is reduced due to the fact that many sands and stones are clampedon the filter screen is prevented.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a rapid primary filtration device for commercial concrete sewage. Background technique [0002] Concrete refers to the collective name of engineering composite materials that aggregate aggregates into a whole by cementitious materials. At present, when transporting concrete, most of them are transported by concrete mixer trucks. During the transportation process, the mixing drum will always be kept rotating to ensure that all Carried concrete will not set. After use, the concrete mixer truck needs to be rinsed to prevent the hardened concrete from occupying space. During the cleaning process, a large amount of sewage containing sand and gravel will be generated. Before discharge, the sewage needs to be filtered to remove the sand in the sewage. Stone filtration reduces the waste of sand and gravel, and reduces the pollution of sewage to the environment. [0003] During...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art, such as: when filtering, most of the filter screens are inclined to set, so that the filtered sand can slide freely, but the smaller sand is easy to filter in the filtering process. If the filter is stuck on the filter, if there are too many sandstones stuck on the filter, the sewage cannot pass through the filter quickly, and the filtration speed will be reduced. A commercial concrete sewage rapid primary filtration device is proposed

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