Industrial Dust Collectors
Need to brush up on dust
Learn the basics for industrial dust collectors.
Different machines with different technologies are made to accomplish
different dust collecting tasks. Which machine to use depends on dust
particle size, volume of dust to filter and local code requirements. The light blue sub-navigation to the
left shows the most common categories of industrial dust collectors:
Dust Collection Systems,
Cyclone Dust Collectors,
Cartridge Dust Collectors,
Baghouse Dust Collectors,
Portable Dust Collectors,
Woodworking Dust Collectors,
or Jet Dust Collectors.
Technology of Industrial Dust Collectors...
The technology of dust collectors, as with any
air cleaner, consists of a fan that pushes or pulls dirty air through some
type of filtration. Dust is collected on the filter while clean air
continues out of the machine.
Three kinds of dust filtration: media, electrostatic precipitation
Media uses a
mechanical process where the filter usually made of a porous
material such as cloth, paper or fiberglass acts as a net. Air
passes through while dust particles are caught in the net.
As air enters an electrostatic precipitator, the
particles pass through a high intensity electrical field that
imparts an electrical charge to the particles. The charged
particles pass through a series of alternately charged collector
plates. Particles are repelled by plates with the same polarity
and attracted to plates with opposite polarity — similar to how
a powerful magnet works.
Inertial - Centrifugal - Cyclone
Separators rely on the mass of
particles. The air stream is manipulated so that more
massive particles drop or are thrown out of the air stream,
while less massive, and usually smaller particles stay in the
stream and continue on to the next stage of filtration.
Categories of Industrial Dust
Dust Collection Systems
An entire dust collection
system uses ducting to collect dust from different areas and takes it to a
main dust collection area for filtration and collection. At the main
area the system may use a few machines for different stages of
filtration. The system will separate out the biggest particles first,
using a cyclone, gravitational, inertial, or centrifugal separator. Once large and medium particles are gone, small particles are
collected with a media dust collector such as a cartridge, or baghouse.
The final stage of filtration, before air is released into the environment,
is usually subject to local code.
Cyclone Dust Collectors
collectors are a type of separator. Operations like woodworking,
fiberglass/plastic cutting, machining, grinding, buffing and
polishing produce large, irregularly shaped particles. Because
these large, irregularly-shaped particles can clog a media type
collector, the cyclone dust collector is often used as a
pre-cleaner for cartridge collectors to remove large particles
and/or to prevent sparks from entering and incinerating a
Inside the cyclone dust collector,
dirty air enters the unit at a high velocity, then is spun around
the cone in a cyclonic motion which throws particles against the
cone wall. As the cone narrows, the large particles spin into the
hopper. Fine particles run back up through the center of the
cyclone and are discharged through the outlet.
Wood Shop and Wood
We consider woodworking dust collectors their own group because they
address a very common health problem that is usually made worse when
addressed improperly. Woodworking creates large chips that usually
fall to the floor as well as fine airborne dust that if inhaled, becomes
permanently lodged in lung tissue. Over time, the fine dust will
settle on surfaces. As an ambient air cleaner operates, it can stir up
air and prevent fine dust from settling. In this situation, running an
ambient air cleaner keeps the particles airborne while you work, thus
creating a worse environment for breathing until all the air has cycled
through the unit.
The most effective solution to removing dust
while woodworking, is usually source capture. As the dust is created,
a duct or hose sucks it away before becoming airborne.
Cartridge Dust Collectors
Cartridge dust collectors are a type of media
filtration. The media is wrapped around a cylinder. The cylinder
shape provides more surface area in a smaller box than traditional flat
media filters. Cartridge dust collectors can also be self cleaning.
Due to these advantages over flat media, they are commonly used to collect airborne contaminants from
industrial processes varying from welding and metal working to chemical and
pharmaceutical processing, cartridge filter dust collection systems are
being utilized in almost every manufacturing segment. Cartridge dust
collectors can be large or small. Small units may have one actual
cartridge, while large units may have a hundred or more. Cartridge
dust collectors may be used to collect just about any small to medium sized,
dry, airborne particles.
Portable Dust Collectors
Portable dust collectors are simply
media, electrostatic or cartridge dust collectors with source
capture arms and mounted on wheels. A portable unit is
versatile in that you can move it from station to station.
They do not require the space of central systems. Nor do they
require installation of a ducting system. Do to small size,
mobility and flexible arms, they are convenient and effective for
source capture where one person is creating dust and fumes at
Baghouse Dust Collectors
Baghouse dust collectors are also known as
fabric collectors. They are one of the most efficient
and cost effective types of dust collectors available and can achieve a
collection efficiency of more than 99% for very fine particles.
Baghouses make an excellent solution for a facility that produces a large
amount of dust.
Baghouse dust collectors
require extensive ducting and a large amount of space. The entire
structure can literally be the size of a house.
Here is how they work.
Inside the large metal housing are tall fabric bags that
hang from the top to the bottom. Dust-filled air enters the baghouse and passes
through the fabric bags that act as filters. The bags can be of woven
or felted cotton, synthetic, or glass-fiber material in either a
tube or envelope shape. Dust collects on the surfaces of the bags
and hardens into a cake. The fabric
primarily provides a surface on which dust particulates collect.
The dust is continuously shaken or blown off the bags and drops into a
See our entire
line of dust collectors and
industrial air cleaners.
If you have
any questions, call us, we'll be glad to help!