Vibratory conveyor / Oscillating Conveyor
A
vibratory conveyor essentially consists of an open or closed trough or
pipe, generally horizontal but not always so, and which is elastically
supported on a base structure or suspended from an overhead structure by
springs. The trough or pipe is caused to oscillate at high frequency
and small amplitude by an appropriate drive mechanism. Vibratory
conveyors are commonly employed in industry to carry a wide variety of
particulate and granular types of bulk materials. The fundamental action
of the vibrating troughs on the bulk material loaded on it is to throw
the particles upward in the forward direction so that the material
performs series of short hopping movement and propagates at a certain
speed.
Oscillating conveyors are utilized to
convey sand or other granular particles at a desired rate. The conveyor
is generally placed under a vibrating shakeout or a grid to eliminate
direct handling of hot sand by the belt conveyor. In the process of
reciprocation, the oscillating conveyor cools the hot sand to some
extent which increases the life of the return sand conveyor belt.
An
important characteristic of vibratory conveyor is the ease with which
the flow rate of the conveyed material can be controlled by adjusting
the amplitude and or frequency of the vibration. This particular aspects
of such conveyor has led to the wide spread application of vibrating
trough as feeders employed to supply material in controlled amount to
various machines. When the trough is replaced by a screen, the vibratory
conveyor may serve as vibrating screen, which has wide application in
various industries. A distinction must be made between feeders and
conveyors. A feeder is used as a discharge device under a storage hopper
or bin and is subjected to varying head loads. A conveyor requires
regulated feed rate and must not operate under varying head load
conditions.
Construction details of Oscillating Conveyor:
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