Production process of stepped multilayer efficient composite membrane folding filter element

Abstract

The invention is applicable to the technical field of membrane folding filter elements, and provides a production process of a stepped multilayer efficient composite membrane folding filter element, multiple layers of filter membranes with the precision from coarse to fine are tiled by membrane paving equipment, so that a plurality of intercepting surfaces with different filtering precision are formed, intercepted objects can be dispersed and intercepted according to the precision, and the intercepted objects are dispersed on the plurality of intercepting surfaces, so that the dust holding capacity (intercepting capacity) of a single intercepting surface can be reduced, the blocking condition of the intercepting surfaces is reduced, and a filter is ensured to continuously keep a good passing rate. The multiple layers of filtering membranes are flatly laid, so that dispersion and interception are guaranteed, the coarse filtering membrane serves as a protective barrier of a subsequent membrane to a certain extent, and the reliability and the interception rate of the filter can be guaranteed. The multi-layer filter membrane is flatly laid, and interceptors are distributed on the surface of the multi-layer membrane according to the interception precision, so that the interception load of the rearmost end (the membrane with the highest precision) is effectively reduced, and the service life of the filter can be prolonged to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of membrane pleated filter cores, and in particular relates to a production process of a cascaded layered high-efficiency composite membrane pleated filter core. Background technique [0002] At present, the commonly used membrane pleated filter elements are basically made of membrane filter materials (commonly used: pp, ptfe, pes, etc.), which are discounted by a discount machine and then packaged into a PP filter cartridge. The pleated membrane basically adopts: upstream support layer + multi-layer microporous membrane + downstream support layer, in which the upstream and downstream supports play the core role of protecting the filtration layer - multi-layer microporous membrane, which protects the microporous membrane from upstream substances The sharp particles in the filter are scratched, and the microporous filter membrane is not deformed downstream and stretched. Due to the use of one layer of upstre...

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Problems solved by technology

[0004] The invention provides a production process of a cascaded layered high-efficiency composite membrane folded filter element, which aims to solve the problem of low reliability in the traditional single-layer membrane production process and the fact that particles of large and small apertures caused by single-layer interception all gather on the same interception surface The problem of being easily blocked completely

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