Security filter including cleaning device

Abstract

A security filter with a cleaning device, comprising a cylinder body, a water inlet pipe opened near the top of the cylinder body, a water outlet pipe opened near the bottom end of the cylinder body, a cover at the top of the cylinder body, and an exhaust port arranged at the top end of the cover , the upper and lower perforated plates arranged in the cylinder body and several filter elements arranged between the upper and lower perforated plates, the permeable holes of the upper and lower perforated plates are provided with guide sleeves, one end of the guide sleeve is inserted into the permeable hole, and the other end is inserted into the In the central hole of the filter element, there is a cleaning device above the upper porous plate. The cleaning device includes a spray main pipe and a spray branch pipe arranged on the spray main pipe. A spray head is arranged on the spray branch pipe, and the spray head is facing the guide sleeve. The center hole of the guide sleeve is provided with a spring at one end where the guide sleeve is inserted into the center hole of the filter element. The filter element can be cleaned, the service life of the filter element is prolonged, the structure is simple, and the manufacturing cost is low.

Description

Technical field [0001] The invention relates to the field of environmental protection treatment, in particular to a security filter. Background technique [0002] The replacement cost of the filter element of the security filter is relatively high. Especially at present, a relatively large number of large flux filter elements are used, and the single cost is high, and the annual replacement cost is particularly considerable. [0003] Most of the security filter elements use melt blown or folded filter elements. The filtration method is full-flow filtration, also called dead-end filtration. Pollutants are trapped on the surface of the filter element. With the increase of pollutants on the surface of the filter element, the water permeability of the filter element will decrease. If it drops to a certain level, the filter element needs to be replaced. It is generally judged according to the operating pressure difference before and after the filter element. Exceeding a certain value...

AI Technical Summary

Problems solved by technology

[0004] The existing security filter cannot clean the filter element, resulting in a short service life of the filter element, which greatly increases the operating cost and needs to be improved

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