Filters cages are a well-known and standard product for industry to remove particular
substance from a flowing stream of fluid by passing the fluid through a filter
device that traps these substances. Practically gases that have smoke soot and
other particulates generated by process such as combustion of fossil fuels etc
have been pass through woven or non woven filtration fabrics for cleaning such
gasses prior to further handling of such gasses , or exhausting these kinds of
gases to the atmosphere . Filters of these types are called as fabric filters
or bag filters. A bunch of such filters are employed to provide dust
collectors.
A tubular
shaped fabric filters are inlay supported by a cage made of wires. These known
as filter Cages. These Filter Cages are principally used to retain the
appearance of bag filter. Filter Cages are ready in varied length and designs.
Bag cages are on the market in the size from 12 to 14 feet (near about 3.5 to
4.25 meters) and a huge filtration system, I.e a bag house might have between
3000 and 5000 filter bags and concerned cages.
Filter Bag Cages are manufactured with using
longitudinal steel wires with intermittent circumferential wires and top and
bottom caps . These steel wires and other things are welded collectively using
special machines and shipped as fabricated unit. It is inherent that the
assembled filter cages will have a large volume but will be manufactured from a
relatively small amount of materials with respect to the total volume filter
bag cage. Typical materials with which filter cages are manufactured are as
follows.
1- MS Wire- Main features of ms wire
are-
It made of 100% soft
steel.
It is anti corrosive
It works
outstanding performance.
It is highly
durable.
It is
resistant to high wear and tear.
It is
offered in diverse sizes from 4mm t0 1mm I.e (8swg to 20 swg)
2- GI Wire –
Galvanized Iron or (GI) wire is applied in many practical application which
include vineyards, welded mesh for poultry forms, filter cages, gabions for
soil protection, chain link , barbed wires and concertina wire for various
mechanical engineering purposes.
3-304
Stainless steel- It is a most versatile
and normal 18/18 stainless steel. It is on the market in a wider range of
products, types and finishes than other categories. It has good forming and
welding characteristics. The balance austenitic structure of grade 304 enables
it to severely deep drawn without
intermediate annealing. Which has made
this grade dominant in the fabrication of drawn stainless steel parts such
sinks, hollow-ware and saucepans etc.
4- 316
/316-L stainless steel- It is a type 316 standard molybdenum-bearing grade. It
is second in significance to 304 among the austenitic stainless steel. It provides 316 better overall corrosion
resistant properties that grade 304. Particularly high resistive to pitting and
crevice corrosion in chloride environments. Steel of this level has excellent
welding and forming qualities.
Steel of
this caliber is readily brake or roll formed into a wide variety of parts for
functions in the industrial field architectural. Steel of this grade has outstanding
welding qualities. Post-weld annealing is not required when welding thin
sections.
Filter Cages
are provided of following types-
1-Bottom Loading groove top
2-Straight Flange
3-U-Cup with two piece design
4- U- Cup
5- U-Cup with built-in venturi
6- Bottom loading high groove
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