High-flux cartridge filter element

Abstract

The invention provides a high-flux cartridge filter element which can solve the problems that the service life of a filter element is short and use benefits of an inner filter element are low as an outer filter element is early blocked by pollutants. The high-flux cartridge filter element is characterized in that the filter element comprises an upper end cover, a lower end cover, an inner supporting framework, a filter medium middle layer, an outer fixing framework and an inner sleeve, the inner supporting framework, the filter medium middle layer and the outer fixing framework are closely combined in a sleeved manner, fitted on the inner sleeve and fixedly adhered at the upper end cover and the lower end cover in a hot melting manner, the filter medium middle layer is made of polypropylene and in a folded shape, the density of the filter medium middle layer is gradually increased from outside to inside, the porosity of the filter medium middle layer is gradually reduced from outside to inside, and the inner supporting framework and the outer fixing framework are stainless steel grids and matched with the folded shape of the filter medium middle layer.

Description

technical field [0001] The invention relates to the field of water treatment, and is a large-flux filter element, in particular to a large-flux security filter element in a water treatment process. Background technique [0002] Security filtration refers to the process in which water enters the inside of the filter element from the outside of the microfiltration filter element (the precision is generally less than 5 μm), and traces of suspended solids or fine impurity particles are trapped outside the filter element. Security filter, also known as precision filter, is generally installed before the pressure vessel to remove fine particles with a turbidity above 1 degree to meet the requirements of the subsequent process for water intake; sometimes it is also installed at the end of the entire water treatment system to prevent Fine particles get into the finished water. Structurally speaking, the security filter is mainly composed of filter shell, filter element, etc. Most o...

AI Technical Summary

Problems solved by technology

[0003] However, this kind of filter element has a small flux, is easy to be fouled and blocked, and has a high frequency of replacement, which cannot meet the requirements of large-flux projects.

The ordinary pleated filter element generally has an angular structure, and there will be some problems in use. For example, after the filter element has undergone water treatment for a long time, the folds of the filter element will be squee

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