Cylindrical mesh type filter

Abstract

The invention relates to the technical field of filter equipment, in particular to a cylindrical mesh type filter. The technical scheme includes that the cylindrical mesh type filter comprises a frame, a cylindrical filter screen, and a cleaning device, wherein the cylindrical filter screen is rotarily arranged on the frame, sewage to be filtered enters the cylindrical filter screen, and filtered water is discharged from at least one end of the cylindrical filter screen to realize filtering. Two ends of the cleaning device are arranged on the frame, and the middle of the cleaning device is arranged in the cylindrical filter screen. The cleaning device sprays water into the cylindrical filter screen for flushing impurity on the cylindrical filter, and comprises a delivery pipe, nozzles and a cavity, wherein the delivery pipe extends into the cylindrical filter screen and is used for delivering flushing water, the nozzles are arranged on the delivery pipe, and the cavity is arranged in the delivery pipe in a semi-closed manner and used for containing part of filtered water, so as to prevent the cylindrical filter screen at the position of the cavity to filter sewage and increase water spraying intensity of the nozzles. With the cylindrical mesh type filter, flushing intensity is increased, filter effect is improved, and filter efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of filtering equipment, in particular to a cylindrical mesh filter. Background technique [0002] There is a shortage of water resources in Northwest China. Most crops are irrigated with drip irrigation belts, and the water in drip irrigation belts needs to be filtered to a certain standard before they can be used, otherwise the drip irrigation belts will be blocked. [0003] At present, there are three main ways to filter agricultural irrigation water: natural sedimentation, sand and gravel filtration, and mesh filtration. It takes a certain amount of time for natural settlement to make soil, sand, mineral debris and other debris that are heavier than water settle at the bottom of the pool. When a large amount of agricultural water is needed in summer, it cannot meet the water demand, and the organic organisms, Plastic films, algae and other substances with a specific gravity smaller than water cannot be e...

AI Technical Summary

Problems solved by technology

[0004] At present, the cleaning mechanism of the screen filter is mainly to spray water to the filter screen from the nozzle connected to the water pump arranged in the filter screen to wash away the sundries adsorbed on the outside of the filter screen, but the cleaning mechanism sprays water to the filter screen. The water flow and the water flowing from the filter screen to the filter screen form a hedge, which greatly weakens its flushing intensity; and the sundries blocked outside the filter screen are deposited near the bottom of the filter screen, and when they accumulate to a certain extent, the water quality around the screen screen will change. Extremely poor, it is easy to block the filter screen, thus affecting the filtration efficiency and effect

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