Filtering structure and preparation method of filtering structure

A filter structure and filter material technology, applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology, etc., can solve the problems of poor support structure strength, poor filter structure strength, small effective filter area, etc., and achieve negative pressure resistance Good, the porosity is improved, and the effect of increasing the effective filtration area
CN109772173APending Publication Date: 2019-05-21CHENGDU INTERMENT TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHENGDU INTERMENT TECH
Publication Date
2019-05-21

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Abstract

The invention discloses a filtering structure and a preparation method of the filtering structure. The filtering structure comprises a film cylinder formed by winding a strip-shaped porous filtering material, and a joint formed by winding the porous filtering material is not parallel to the central axis of the film cylinder. When the filtering structure bears internal and external pressure, the maximum principal stress of the filtering structure is perpendicular to the central axis and acts on each round section. According to a traditional straight joint filtering structure (a joint is parallel to the central axis of the filtering structure), the joint directly bears the maximum principal stress, and the requirement of weld joint strength is high. When the joint is not parallel to the central axis of the film cylinder, the joint mainly bears component force of the principal stress, namely radial stress and axial stress, the two stress values are obviously smaller than the principal stress of the straight joint filtering structure, and therefore the thickness of the filtering structure can be obviously reduced at the same work pressure and the same pipe diameter. The porosity can beobviously increased, so that the effect filtering area is improved.
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Description

technical field

[0001] The invention relates to the technical field of filter devices, in particular to a filter structure and a method for preparing the filter structure. Background technique

[0002] The applicant of the present application has submitted publication numbers respectively CN104874798A (named as porous film and its preparation method), CN104874801A (named as porous film and its preparation method), CN104959612A (named as a porous film and its preparation method). film preparation method), CN104959611A (named porous film and porous film preparation method) patent application, discloses a kind of thickness ≤ 1500 micron and foldable flexible metal film, more preferably when the thickness ≤ 200 micron is easy achieve high air permeability. At present, the application of the flexible metal film is mainly used in the filter elements for gas-solid and liquid-solid filtration and separation in harsh environments such as ceramic industry, metallurgy, coal chemical i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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