Vibratingfeeder 150211110459 Conversion Gate01

8/18/2019 Vibratingfeeder 150211110459 Conversion Gate01

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P R E P A R E D B Y

J I S H N U V

E N G I N E E R , B H E L - I S G

VIBRATING FEEDERS


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1.INTRODUCTION

A vibrating feeder is a feeder/material conveyingequipment consisting of a pan or trough to which a

vibrating motion is imparted so that the material is

impelled in a definite, controlled flow.Normally, it is positioned under the opening in the

bottom of a bin or below an emergency reclaimhopper in a stockpile

Generally its use should be avoided where thematerial is of sticky nature and which has thetendency to build up on the surface of pan/trough


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2. TYPES OF VIBRATING FEEDERS

Vibrating feeder can be classified into two types basedon the vibration imparting mechanism

2.1) Direc !"rce e#cier $%e

irect force e!citer "#$% type vibrating feeder consistsof an unbalanced weights assembly which imparts vibration to the trough due to the centrifugal force whilerotating

&he counterweights of the #$ are positioned in such a way that the unbalanced weights create transverse as well as longitudinal vibration of stroke sufficient toconvey the material


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'. &()$* +# V-A&NG #$$$*

2.1.1) C"&'r(ci"&* +ei*' "! DFE ir"-!ee+er


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&rough/pan/deck is the tray on to which thematerial is fed from the hopper/bin. t consists of amother plate "*'01' Gr-/*&2'% and liner "**

2034/&iscral/*A56A% fi!ed on to it. &he linersare fi!ed on to the mother plate normally usingcountersunk bolts and are torque tightened.

irect force e!citer7 irect force e!citer imparts the

vibration to the deck due to the centrifugal forcegenerated by the rotation of unbalanced weights.


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&he centrifugal forces #8 and #' add to the resultingcentrifugal force #, which produces linearoscillations. &he stroke/amplitude and thereby the

material flow rate are ad9usted by varying thenumber of additional weights


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:ardan shaft is a universal 9oint shaft which permitsa!ial as well as radial displacement.

*pring "#ront and rear%7 4+: of the springcommonly used is ;0:rV2 or ;; *< or $N2;A


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2.2) U&*&ce+ ""r $%e =nbalanced motor type vibrating feeder consists of 8 or ' unbalanced motors

which impart vibration to the vibrating feeder

&here are two methods of mounting of the unbalanced motors7

2.2.1) Si+e "(&i&/0


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2.2.2) Bc "(&i&/


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. CAPACITY CALCULATION OF A VIBRATINGFEEDER


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4aterial flow rate >? @ ! A ! V ! 100 ! #

Bhere @ ? ensity of the material conveyed in t/mC

A? :ross sectional area of the material bed formed in mD V? #low velocity of the material in m/sE 4inimum to be

maintained is A? - ! E - is the width of the tray over which the material bed

formed/ inside skirt widthE d is the throat opening height or

skirt height at discharge side. #? nclination factor depending on the angle of inclination


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S"*e+ e#%*e.1 esign &)67 ?0.F ! 0.33;2 ! 0.'; ! 8. ! 100?38.1322tphI


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S"*e+ e#%*e.2) esign &)67 ;00&)6 4aterial conveyed7 :oal

*kirt height at discharge? ?0.F ! 8.8';! 0.'; ! 8.' ! 100?342TPH5677 %8 6ence capacity selection of the model is ok


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9. :OTOR SELECTION OF A VIBRATING FEEDER

)ower required for driving a vibrating feeder, )?"VB ! a ! N ! 8.';%/"3


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9. :OTOR SELECTION OF A VIBRATING FEEDER

*olved e!ample.% Vibrating weight7 '100 kg Amplitude of vibration7 2mm )4 of motor7 8000)4 *tarting torque ma!imum '.0 times normal 4otor selected7 88kB

*oln% VB? '100kg a?0. 2cm

N? 8000 )4 5&? '.0

)? "'100 ! 0.2 ! 8000 ! 8.';%/ "3


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THAN; YOU

Vibratingfeeder 150211110459 Conversion Gate01

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