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

Pending Publication Date: 2019-05-21
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of one aspect of the present invention is to provide a support structure to solve the problems of poor strength and thicker support structures in the prior art
Another object of the present invention is to provide a filter structure and a method for preparing the filter structure, so as to solve the problem of poor filter structure strength in the prior art
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Method used

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  • Filtering structure and preparation method of filtering structure
  • Filtering structure and preparation method of filtering structure
  • Filtering structure and preparation method of filtering structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0176] Example 1

[0177] like figure 2 The supporting structure of the shown filter structure includes a support cylinder 1 wound by a strip-shaped coiled material 11, the coiled material 11 has a porous structure, the coiled material 11 is rectangular, and the center of the coiled material 11 The wire is wound in the shape of a cylindrical helix. The thickness of the coiled material 11 is 0.6 mm, and the porosity is 50%. The helix angle α of the helix is ​​75°. The two long sides of the coil 11 are wound and formed by contact welding, and the width of the welding is 3mm. When the helix angle α is 75° and the middle diameter of the support cylinder 1 is 126 mm, the required width of the coil 11 is 102.39 mm.

Example Embodiment

[0178] Example 2

[0179] like figure 2 The supporting structure of the shown filter structure includes a support cylinder 1 wound by a strip-shaped coiled material 11, the coiled material 11 has a porous structure, the coiled material 11 is rectangular, and the center of the coiled material 11 The wire is wound in the shape of a cylindrical helix. The thickness of the coiled material 11 is 0.8mm, and the porosity is 70%. The helix angle α of the helix is ​​60°. The two long sides of the coil 11 are wound and formed by contact welding, and the width of the welding is 3mm. When the helix angle α is 60° and the middle diameter of the support cylinder 1 is 126 mm, the required width of the coil 11 is 197.82 mm.

Example Embodiment

[0180] Example 3

[0181] like figure 2 The supporting structure of the shown filter structure includes a support cylinder 1 wound by a strip-shaped coiled material 11, the coiled material 11 has a porous structure, the coiled material 11 is rectangular, and the center of the coiled material 11 The wire is wound in the shape of a cylindrical helix. The thickness of the coiled material 11 is 1mm, and the porosity is 80%. The helix angle α of the helix is ​​50°. The two long sides of the coil 11 are wound and formed by contact welding, and the width of the welding is 3mm. When the helix angle α is 50° and the middle diameter of the support cylinder 1 is 126 mm, the required width of the coil 11 is 254.31 mm.

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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.

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

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Application Information

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IPC IPC(8): B01D63/10
Inventor 高麟汪涛李翔
Owner CHENGDU INTERMENT TECH
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