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About Pneumatic Conveyors
Pneumatic conveyors, also called air conveyors, use
air to transport materials from one location to another. Pneumatic conveyor
systems do this by generating air pressure levels measuring either above
or below the atmospheric pressure to move the materials through pipes
or tubes in the conveyor system to the required destination. As a general
rule, pneumatic conveyors are highly reliable and easy to maintain, which
makes them an attractive choice when considering various conveying methods.
Single pneumatic conveyors can handle a variety of materials, so there
is little need to have many conveyors specializing in only one product.
There are many different types of air conveyers, which are manufactured
to handle the various needs of the many industries that are served by
them. Some of the more basic types are the dilute phase and dense phase
conveyors, which differ by pressure and rate of speed. Dense phase conveyors
are run by compression, and are used for conveying mainly heavier materials.
Because of this, these convey at a slower rate than dilute phase conveyors,
which convey by creating a vacuum. This method is much quicker and is
used to convey smaller, lighter materials. Other types of air conveyors
are named for their specific duties, such as the bulk handling conveyor,
the abrasive materials conveyor and the food handling conveyor. In addition
to the wide range of standard configurations, pneumatic conveyor manufacturers
may also offer custom conveyor designs to fulfill customer requests so
everyone’s needs are covered.
Pneumatic and air conveyors are a cost-effective, reliable and quick
method for transporting many different materials. Some of these materials
include powders, grains, soils, sands, pills, pellets, tablets, rocks,
metals, carbon black, coal, gravel, chemicals, textiles, food, plastics,
powders, wood chips, toxic waste and asbestos. Besides the large variety
of materials pneumatic conveyors are able to handle, they also have the
benefit of low product leakage. This remains particularly important in
industrial applications involving the conveyance of hazardous materials
where a leak can be dangerous as well as a threat to the operation. Other
benefits of pneumatic conveyors include sanitary operation and a wide
range of models to suit the varying needs of different industries and
products.
Many industries, including the food and beverage processing, plastic,
pharmaceutical, marine, machining and milling, powder coating, textile,
aviation, clay and ceramics, glass, mining, paper and pulp, automotive,
steel mills and chemical industries benefit from pneumatic conveyor systems.
When considering the use of a pneumatic conveyor system, certain factors
must be taken into account. First consider what material needs to be
conveyed and specifications such as size, shape, weight and volume. Another
thing to consider is the production environment in which the conveyor
system needs to be utilized. There is a pneumatic conveying system for
almost any need.
Featured
Articles
http://www.nol-tec.com/documents/articles/NT_PBE_0306.pdf
http://www.nol-tec.com/documents/articles/NT_PBE_0397.pdf
http://www.flexicon.com/us/Articles/technical/P-1113.asp
http://www.flexicon.com/us/Articles/technical/Q-0950.asp
http://www.dynamicair.com/pdf/20013.pdf
Types of Pneumatic Conveyors
- move coarse rough materials
at a slow pace. Abrasive materials conveyors often use compressed air
to move the material through the system efficiently.
- use pneumatic power to transport materials.
- handle a variety of materials for a wide
and ever-increasing range of industries. These conveyors fill bags
with
bulk materials and transport them.
- are useful in transporting abrasive, friable
or heavy materials, such as sands, soils, minerals and rocks. Dense
phase conveyors use an air compressor to generate high pressure
levels to move materials slowly through the system.
- move non-abrasive, light materials like powders
and grains. Dilute phase conveyors use low pressure air levels
during the quick transportation of materials through the system.
-
are conveyor systems that are completely covered. Enclosed conveyors
protect against product contamination, and are particularly useful in
applications involving the conveyance of sensitive products, such as
for the pharmaceutical, chemical and medical industries.
- are used in the food processing industry
to convey a variety of food products, including beans,
nuts, powders and
formulas. Because food handling conveyors transfer products
that will eventually be ingested, cleaning is very important
to avoid product
contamination
- are rolled to and positioned at a desired discharge
point. Material can be drawn from a container, a feedbin
or a pickup adapter under a bin or process vessel.
- uses forced gas to transport solid goods.
- consist of all of the components used in air-powered conveyors.
- are generated by compressed air-driven vacuum pumps
that can be controlled automatically. When the material
container is full, the vacuum pump is stopped and the bottom
valve opens so the
material can be discharged
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