Automatic pressure flush type rapid filter

Abstract

The invention relates to an automatic pressure flush type rapid filter which comprises a bucket, characterized in that a clear water discharge pipeline is arranged at the upper end of the bucket, a pre-filtering water pipeline and a sludge discharge pipeline are respectively arranged at the lower end of the bucket, a filtering material layer is arranged in the bucket and comprises a plurality of filtering material elementary layers arranged sequentially from the top down, and the filtering material elementary layers can be sequentially reduced in hole diameter from the bottom up according to particle diameters. In a flushing state, muddy water is filtered by layers from the bottom up through a water inlet pipeline and the filtering material layer, filtered clear water is discharged from the clear water discharge pipeline at the upper end, and sludge deposits in a sludge bucket and is discharged from the sludge discharge pipeline; and in a back flushing state, water reversely flows downwards from a clear water storage area to flush the filtering material layer by the self gravitational potential energy, and accumulated sludge is discharged from the sludge discharge pipeline below. The process is combined with a rapid filtration self-solidifying process, back washing is performed by the self pressure of the liquid level of the water, and a back washing pump is saved, thus saving the cost and having good effects.

Description

Self pressure flushing quick filter technical field The invention belongs to the field of water treatment, in particular to a self-pressure flushing type quick filter tank. Background technique Rapid filter (rapid filter), especially the traditional rapid filter, the filter material is generally single-layer fine sand graded filter material or coal, sand double-layer filter material, flushing with single water flushing, flushing water from the water tower (box) or Water pump supply. Ordinary fast filter is mainly composed of the following parts: (1) The filter body, which mainly includes water inlet pipes, drain tanks, filter media (filter material layer), filter medium support layer (cushion material layer) and distribution (drainage) water system. (2) Pipe gallery, which is mainly equipped with five kinds of pipes (canals), namely muddy water inlet pipe, clean water outlet pipe, flushing water inlet pipe, flushing drain pipe and primary filtration drain pipe, as w...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a self-pressure flushing quick filter to solve the technical defects of high backwashing cost and poor effect in the prior art

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