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Screen filter for microfiltration

A filter and wire mesh technology, which is applied in the direction of fixed filter elements, membrane filters, gravity filters, etc.

Inactive Publication Date: 2020-01-31
AQSEPTENCE GROUP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One drawback experienced by conventional wire-based screen filters is that they are limited to removal of particulate matter having a particle size of 20 microns or greater
Additionally, conventional manufacturing techniques limit filtration effectiveness to a variation of openings of approximately four times the standard deviation of the spacing between wires.

Method used

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  • Screen filter for microfiltration
  • Screen filter for microfiltration
  • Screen filter for microfiltration

Examples

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example

[0021] Example: Wire Mesh Filter Rated for 20 Micron Particulate Removal

[0022] Target Filtration Rating: 20 microns

[0023] · Average slot width: 20 microns

[0024] ·Standard deviation: 8 microns

[0025] 68% of the slots are between 12 microns and 28 microns

[0026] 95.5% of the slots are between 4 microns and 36 microns

[0027]99.7% of the slots are smaller than 44 microns

[0028] In certain filtration applications, it may be desirable to shape the wire mesh filter 100 such that the slot width 142 may be intentionally varied (ie, smaller or larger) at particular locations on the wire mesh filter 100 . In those instances, the slot width 142 may be controlled at those prescribed locations such that the uniformity has a normally distributed distribution curve at the prescribed locations.

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Abstract

A screen filter having a plurality of support rods arranged in longitudinal relationship such that a continuous length of wire can be spirally wrapped about the support rods to define a cylindrical body. Along the length of the cylindrical body, slots are defined between adjacent wires wherein each slot has a slot width that determines an overall filter performance for the screen filter. The screen filter is fabricated such that an average slot width across the length of the cylindrical body is equal to a filter performance rating. The screen filter is fabricated such that the slot width for the cylindrical body has a normal distribution wherein 99.7% of the slot widths are within three standard deviations of the average slot width.

Description

[0001] priority claim [0002] This application claims priority to U.S. Provisional Application Serial No. 62 / 485,051, filed April 13, 2017, and entitled "SCREEN FILTER FOR MICROFILTRATION," The above provisional application is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to wire-based wire mesh filters for separating solid matter from a fluid stream. More particularly, the present invention is directed to reusable wire-based wire mesh filters manufactured from shaped wire in order to remove particulate matter and other contaminants having a size less than 20 microns. Background technique [0004] The use of wire mesh filters is well known in the industry. For example, for nearly 100 years, the trademark Johnson Manufactures and sells wire-based screens to filter incoming groundwater and well water. Advantages of wire-based wire mesh filters include their robust strength allowing them to be cleaned and reused ...

Claims

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Application Information

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IPC IPC(8): B01D29/31B01D29/33B01D29/48
CPCB01D29/33B01D29/48B01D2201/0415
Inventor M·R·埃克霍尔姆S·D·德恩C·H·弗兰斯伯格
Owner AQSEPTENCE GROUP INC
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