Prefilter

Abstract

The invention relates to a prefilter. The prefilter comprises a filter flask, a valve body, a filter element, a water inlet / outlet valve body, a valve element and a pollution discharging component, wherein the valve body is fixedly connected to the filter flask; the filter element is arranged in the filter flask; the water inlet / outlet valve body is arranged on the valve body; the valve element isrotatably connected to the valve body; a first channel and a second channel are formed on the valve element; the water inlet / outlet valve body is provided with a water inlet connector and a water outlet connector; the water inlet connector can be selectively communicated with the first channel or second channel of the valve element; the water inlet connector can be communicated with the filter element through the first channel of the valve element; the second channel of the valve element can be communicated with the valve body; the water outlet connector is communicated with the valve body; athrough hole is formed on the flask bottom of the filter flask; and the pollution discharging component is connected to the filter flask and is used for selectively blocking the through hole. The prefilter involved in the invention is capable of converging two water flow introduced by the water inlet / outlet valve body into one water flow, realizing back flushing of the filter element and effectively cleaning the filter element.

Description

technical field [0001] The invention belongs to the technical field related to purification equipment, in particular to a pre-filter. Background technique [0002] Long-distance water pipes and faucet corrosion will bring rust. The pre-filter is the first coarse filtration equipment for the whole house water, which filters out particulate impurities in the water, such as: rust, sediment, particulate matter, and suspended solids. , asbestos fibers and other substances, to solve the problems of secondary pollution and rural groundwater turbidity caused by tap water in the process of urban pipe network transmission and distribution, which are "red water", "black water", "yellow water" and "scaling" The nemesis; the secondary water supply of the water tank on the roof leads to the growth of microorganisms. The pre-filter can effectively intercept the "red worm" and other visible microorganisms; it is the nemesis of the secondary pollution of tap water. The pre-filter is usually ...

AI Technical Summary

Problems solved by technology

Its flushing function is mainly realized by the backflow of the filtered water. It is completely forward flushing, not backwashing. The corresponding reverse impact force is small and cannot achieve the actual effect, making the existing pre-filter , when impurities are embedded in the filter mesh of the filter element, it is difficult to clean the filter element thoroughly. If you want to clean it, you still need to cut off the pipeline to remove and wash the filter element assembly, which is time-consuming and laborious

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