Combined type filtering device

Abstract

The invention provides a combined type filtering device. The combined type filtering device mainly comprises a plurality of filters which are connected together in series and have the same shape and structure, wherein each filter comprises a box body; each box body is provided with a clean water region, a first inclined pipe region, a second inclined pipe region, a precipitation region and a coagulation region beside the precipitation region in sequence from top to bottom; each coagulation region is internally provided with a pressure water inlet pipe and a mud discharging pipe and a water distribution pipe is arranged at the bottom of each precipitation region; a water outlet pipe is arranged on a side wall of each clean water region; each precipitation region is connected with the corresponding mud discharging pipe; an inclined slope surface is arranged on an inner wall of each mud discharging pipe from an end part to a pipe opening; the end part of each mud discharging pipe is connected with the corresponding water outlet pipe through a three-way valve. The device provided by the invention has a scientific structural design and is combined and spliced; the device has a good filtering and precipitation effect and is used for smoothly discharging mud.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a combined filter device. Background technique [0002] Sewage treatment usually needs to go through flocculation, filtration, sedimentation and other processes. At present, many filtration devices on the market use such processes. Generally speaking, most of the sedimentation filtration uses inclined tube sedimentation. The general problems in inclined tube sedimentation are : The inclined angle of the inclined pipe, generally the inclined angle is 55°~60°, generally not less than 30°~40°, because this setting is conducive to sludge discharge, but according to the working principle of the inclined pipe sedimentation tank, the projected area of ​​the inclined pipe The larger the sedimentation effect, the better; in addition, another problem of inclined tube sedimentation is mud discharge, and poor mud discharge often causes secondary pollution. Contents of the invention [0003...

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Problems solved by technology

[0002] Sewage treatment usually needs to go through flocculation, filtration, sedimentation and other processes. At present, many filtration devices on the market use such processes. Generally speaking, most of the sedimentation filtration uses inclined tube sedimentation. The general problems in inclined tube sedimentation are : The inclined angle of the inclined pipe, generally the inclined angle is 55°~60°, generally not less than 30°~40°, because this setting is conducive to sludge discharge, but according to the working principle of the inclined pipe sedimentation tank, the projected area of ​​the inclined pipe The larger the sedimentation effect, the better the sedimentation effect; in addition, another problem of inclined tube sedimentation is sludge discharge, and poor sludge discharge often causes secondary pollution

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