Self-driven sewage cleaning water filter

Abstract

The invention relates to a self-driven sewage cleaning water filter, which comprises an upper casing, a lower casing, an impeller speed adjuster, a rotating speed annunciator, a balance shaft, a filter screen component, a sewage discharge branch pipe, a micro-impeller and a sewage discharge pipe. According to the self-driven sewage cleaning water filter, the self-driven sewage cleaning and discharging function is realized; during sewage discharging, a sewage discharge valve on a sewage discharge pipe 3 is opened, so that the water filter is in a sewage cleaning and discharging working condition; a sewage discharge branch pipe 15 is driven by the impeller 4 to rotate, so that pipe orifices on two arms of the sewage discharge branch pipe 15 are sequentially communicated with the washed filter screens of units, sewage attached to the filter screens are backwards washed by clean water, and effluent is discharged through the sewage discharge pipe 3, so that automatic sewage cleaning and discharging function is realized; and when the sewage valve is closed, the branch pipe is full of static pressure water, the sewage cleaning and discharging working condition is ended, and the water filter is recovered to the normal filtering working condition. According to the self-driven sewage cleaning water filter, redundant water energy in the water filter is fully utilized to drive the micro-impeller to realize self-driving, so that the technical effects of saving energy and simplifying structure are achieved.

Description

technical field [0001] The invention relates to a water filter, in particular to a self-driven dirty water filter. Background technique [0002] In the technical water supply system of hydropower stations, the water filter is one of the necessary devices, and there are certain requirements for its outlet water pressure and flow rate. The local water head loss of the water filter is an important technical index. At present, widely use the water filter in the technical water supply system of large and medium-sized hydropower stations at home and abroad, mainly the water filter in the Chinese patent ZL9411629. It has the advantages of continuous stability, small inherent overcurrent loss, and good anti-clogging performance of the filter screen. However, the cleaning and sewage discharge process requires additional power provided by the motor, but in fact there is excess water energy in the water filter that is not used. This has just caused the waste of energy. [0003] There...

AI Technical Summary

Problems solved by technology

At present, widely use the water filter in the technical water supply system of large and medium-sized hydropower stations at home and abroad, mainly the water filter in the Chinese patent ZL9411629. It has the advantages of continuous stability, small inherent overcurrent loss, and good anti-clogging performance of the filter screen. However, the cleaning and sewage discharge process requires additional power provided by the motor, but in fact there is excess water energy in the water filter that is not used. This results in a waste of energy

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