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Improved filtering drum for fibre suspensions in water

A filter cartridge, suspension technology, applied in the field of cellulose fibers, which can solve the problems of limiting filtration speed and efficiency, slow downward movement, etc.

Inactive Publication Date: 2011-05-18
COMER SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Because said downward movement is rather slow, this limits the filtration speed and efficiency of the cartridges achieved according to the known technology, the values ​​of which, as already described, are now considered to be considerably insurmountable standard value

Method used

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  • Improved filtering drum for fibre suspensions in water
  • Improved filtering drum for fibre suspensions in water
  • Improved filtering drum for fibre suspensions in water

Examples

Experimental program
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Embodiment Construction

[0024] The filter cartridge which is the subject of the invention is shown in axonometric projection on image 3 , where the filter cartridge is indicated with 1 as a whole.

[0025] The filter cartridge for filtering fibers in an aqueous suspension comprises a plurality of mainly longitudinally extending profiled rods 2 arranged side by side next to each other in such a way as to form a plurality of slits 3 .

[0026] In this way, the profiled bar 2 defines a tubular structure of substantially circular cross-section, wherein the tubular structure defines a longitudinal axis X, wherein the inner surface 4 of the tubular structure is a filtering surface.

[0027] The profiled bar itself has an edge 5 towards the inside of the barrel 1, wherein the profiled bar is formed in sections with various geometries, but in any case forms a slit 3 with a constricted-expanded cross-section, wherein the slit The slots 3 can create a Venturi effect on fluid flowing radially through them.

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PUM

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Abstract

The invention concerns a filtering drum (1) for fibre suspensions in water, comprising a plurality of shaped bars (2; 11, 13) with mainly longitudinal development, arranged side by side in order to define a tubular structure having substantially circular cross section, with the inner lateral surface (4) covered by a plurality of slits (3) that create a filtering surface, two or more annular elements (15) coaxial with one another and spaced according to the longitudinal axis (X) defined by the tubular structure, coupled through contact outside the shaped bars (2; 11, 13), wherein the shaped bars (2; 11, 13) are arranged according to a helical pattern.

Description

technical field [0001] The present invention relates to an improved filter cartridge primarily for use in systems for filtering fibrous suspensions in water, in particular for filtering cellulose fibers in aqueous suspensions. Background technique [0002] It is well known that in the paper industry, cellulose fiber suspensions in water must be properly filtered to remove all impurities contained therein before being used in the production process, especially if the cellulose fiber suspensions come from waste paper. [0003] The filtration process is carried out by means of known filters which essentially consist of a fixed filter cartridge, wherein the filter cartridge is composed of a plurality of mainly longitudinally extending metal rods, wherein the metal rods are arranged side by side Circumferentially aligned so as to create a tubular structure defining a longitudinal axis. [0004] The bars have substantially trapezoidal profiled edges towards the interior of the ba...

Claims

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Application Information

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IPC IPC(8): B01D29/33B01D33/27D21D5/16B01D29/44
CPCB01D29/33B01D33/275B01D29/445
Inventor 贾恩卡洛·达尔马索
Owner COMER SPA
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