Belt conveyor consists of two or more pulleys, with a continuous loop of material - the conveyor belt
- that rotates about them. One or both of the pulleys are powered,
moving the belt and the material on the belt forward. The powered pulley
is called the drive pulley while the unpowered pulley is called the
idler. There are two main industrial classes of the conveyor belt
; Those in general material handling such as those moving boxes along
inside a factory and bulk material handling such as those used to
transport industrial and agricultural materials, such as grain, coal,
ores, etc. generally in outdoor locations. Generally companies providing
general material handling type belt conveyors do not provide the
conveyors for bulk material handling. In addition there are a number of
commercial applications of belt conveyors such as those in grocery stores.
The
belt consists of one or more layers of material. They can be made out
of rubber. Many belts in general material handling have two layers. An
under layer of material to provide linear strength and shape called a
carcass and an over layer called the cover. The carcass is often a woven
fabric having a warp & weft. The most common carcass materials are
polyester, nylon and cotton. The cover is often various rubber or
plastic compounds specified by use of the belt. Covers can be made from
more exotic materials for unusual applications such as silicone for heat
or gum rubber when traction is essential.
Material flowing over the
belt may be weighed in transit using a beltweigher. Belts with regularly
spaced partitions, known as elevator belts, are used for transporting
loose materials up steep inclines. Belt Conveyors
are used in self-unloading bulk freighters and in live bottom trucks.
Conveyor technology is also used in conveyor transport such as moving
sidewalks or escalators, as well as on many manufacturing assembly
lines. Stores often have conveyor belts at the check-out counter to move
shopping items. Ski areas also use conveyor belts to transport skiers
up the hill.
A wide variety of related conveying machines are
available, different as regards principle of operation, means and
direction of conveyance, including screw conveyors, vibrating conveyors,
pneumatic conveyors, the moving floor system, which uses reciprocating
slats to move cargo, and roller conveyor system, which uses a series of
powered rollers to convey boxes or pallets.
There are five main belt conveyors in ZM Automation:Flat Belt Conveyors, Incline belt conveyor - Elevating belt conveyor,Plastic Belt Conveyors,Portable conveyor systems,Retractable Belt Conveyor.
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