CONVEYOR PPT.ppt

8/10/2019 CONVEYOR PPT.ppt

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CONVEYORSConveyors are the most convenient equipments

for transport of aggregates and metal units like

plates and billets and ores and soils over

comparatively longer distances and when changein elevations and directions are involved.

Because of continuous movement, at relatively

higher speeds, conveying capacities also will be

high

Depending on the materials to be conveyed and

the distances of conveyance, different types of

conveyors system have been developed.

ADVANTAGES

They can transport larger quantities

.Conveyance is possible on uphill grades of 30

.Comparatively silent and smooth.

The movement is reversible

.Low dust nuisance.


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DISADVANTAGES

Wear and tear more rapid and hence need frequent inspection and maintenance of

belt as well as idlers.The unit cannot be easily dismantled or shifted.

Satisfactory results depends on the correctness and care in alignment.

Different types of conveyorsroller conveyors

Belt conveyors

screw conveyors

shaker conveyors

chain conveyors

POWER REQUIREMENTSThe total power required will be the sum of the powers required for moving the empty

belt over idlersto move the load horizontally

to lift or lower the load vertically

to compensate drive losses

to operate a tripper


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THE ROLLER CONVEYORS:

These are series of rollers of

specified diameters and width,

which are kept under constant

revolutions.

Manufactured or cast items such

as pipes, rods, billets, huge quarry

stones or boulders and blockcasting are made to slip on to

them and which get transported

over by the spindling rollers.

These are fit for items which do

not tend to slid side ways.

Roller conveyor is designed for Easy material transportation in

Distribution centers, warehouses, assembly lines, shipping, palletizing

systems, mail and parcel sorting centers, mail-order companies, etc.,


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The conveyor belt system consists

of a continuous moving belt that

carries materials or packages fromone place to another.

This belting system is also used in

conveyor transport systems such

as moving sidewalks or escalators,

as well as on many manufacturing

assembly lines.A conveyor belt or belt conveyor

consist of two end pulleys and is

usually suspended with a

continuous loop of material that

rotates about them.

The Conveyor belt systems are widely used in an array of material transport

applications such as manufacturing, food processing and heavy industry. They

are extensively used to transport industrial and agricultural materials such as

grain, coal, ores, etc. Such systems are also used in self-unloading bulk freighters

and live bottom trucks.

BELT CONVEYOR


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SCREW CONVEYORS:

These are meant for powdery or small size materials to be pushed through or

conveyed over very small distances.

SHAKER CONVEYORS

These are suited for large size boulders or stony material or ores, which while under

conveyance, get shed of the loose particles or dust by the shaking action. The

system consists of series of steel trays, through or pans each of 3 to 4m length, laid

with overlaps and connected by bolts or other devices. The trays are made to moveover wheels or rollers(15 to 20cm dia). These conveyors are limited to about 100

meters

CHAIN CONVEYORS

These are built by linking triangulated scraper chains laid on trough or plate whichroll around rollers laid at some distances. Material conveyance is possible

through steep gradients (1 in 3) up or down as well as on level. Can be adopted

for rough purposes and ensures larger output, have less noise. But involve high

cost and power consumption.

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CONVEYOR PPT.ppt