BH 3
R
NO
GO
,BH3.00 SGO
&
OPERRATIN
G CCCHARAC
TERISTI
I
CS
IMPACT
IN
G SILENT
FREQUEUENC
00 VPM
1
800 VP
M
NSU
PTION
N
C
.F.M.M
C
.F
50
8.5 L.
3.3.45
45
B
.5 L.
P.
3.3.45
45
B
UND LEVEL
dbA 7
6
db
A
S
IIZZZ
I
NG
C
C
RR
RIIIAAA
HO
HOHOPP
PPPPPP
E
PA
PA
C
I
– 22
ns
s
(
90
––––3.3.3.3.7 7
kgs))
W
LLL
THICKENSS
4” (6.35 mm) – 3/8
” (9.5
m
m)
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onon
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ke
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to
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of buulk sss
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atat
t
e
l. .
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br
ators that generat
e linear vibration do
no
t
develo
p high
shear
in
g
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rces a
t
th
e
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n
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ll. Th
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re
BIN // HPPPER VIIBRAA
A
NO
TE:
e
rna
ensions
o
3
00 IGO
,
H
300&
3
00 IG
ar
e
sme
BH 3
BIN / HOPPER VIBRATO
OPERATING CHARACTERISTICS
IMPACTING SILENT
FREQUENCY
AIR
CONSUMPTION
SOUND LEVEL
HOPPER
CAPACITY
WALL
THICKENSS
RANGE
RANGE
The NAVCO BH 3 is a Pneumatic Piston Vibrator designed to provide reliable and effective performance, even when
The NA
exposed to sever adverse elements. The size and operating characteristics of the BH 3 make it ideally suitable for solving
exposed to sever adverse elements. The size and operating characteristics of the BH 3 make it ideally suitable for solving
medium duty bulk material flow problems.
medium duty bulk material flow problems.
BH 3 is a Pneumatic Piston
rator designed to provide reliable and effective performance, even when
Y
M
HOPPER SIZING CRITERIA
HOPPER
TY
Operation and Construction
3400 VPM 1800 VPM
1.6
11.6 C.F.M.
50 PSI
@ 50 PSI
328.5 L.P.M.
@ 3.45 Bar
96 dbA 76 dbA
10 – 20 tons (9071.85 – 18143.7 kgs)
1/4” (6.35 mm) – 3/8” (9.5 mm)
P.M.
0 to
ar
.
1.6
11.6 C.F.M.
@ 50 PSI
328.5 L.P.M.
28
@ 3.45 Bar
ITE
71.85
.M.
PSI
M.
ar
The model BH 3 vibrator incorporates a nominal 3” piston and bore. During operation, compressed air is alternately
directed from one end of the piston to the other through a series of internal ports. The piston is the only moving part, which
makes the pneumatic piston vibrator a reliable, low maintenance device. The vibrator housing is a one piece, ductile iron
casting. This adds to the durability and reliability of NAVCO Pneumatic Piston Vibrators.
The action of the piston in a pneumatic piston vibrator generates high amplitude vibration with unidirectional or linear force
vectors. High amplitude characteristics enable the vibrating energy to be transmitted in the capacity required to overcome
the strength of the bulk material involved in a bridge (arch) or a rathole (pipe). Other advantages of high amplitude, linear
vibrators include low utility consumption and minimum bin wall stress.
Linear Vibration offers the following advantages:
¾The work or energy generated by the vibrator can be directed normal or perpendicular to the flow of bulk material to
¾Vibrators that generate linear vibration do not develop high shearing forces at the bin wall. This allows a simple, more
¾Linear vibration is ideal for driving vibratory feeders and compaction tables.
del
re
from
s the pneu
T
acti
ctors. High amplitud
rators include low ut
address a specific material flow problem. The vibrator work is used very efficiently to reduce the sliding friction angle of
d
the hopper and to overcome the strength of the bulk material in the hopper. These two factors are the key to promoting
th
the flow of bulk solid materials.
direct approach to mounting these vibrators.
direct approach to mounting these vibrators.
Linear vibration is ideal for driving vibratory feeders and compaction tables.
3 vibrator icorporates a n
of the piston to the oth
ist
vib
o the dra
of the piston
t
er
a
er a
l
er
eumatic
aracteristics enale the vibrating e
ty consumption and minimum
o
ed
fl
t
ria
r a
able,
and reiabi
ston v
al 3” piston and
ough a series
maintenanc
NA
vant
or
e vi
the
nerates hi
rect
work
mate
ore.
nter
vice.e vi
eu
amplitude v
to be t
stress.
operation,
rts. T
or h
ston
ibrators.
mitted in
.
l or perpend
ry efficiently
pper. These
n is
on wit
factor
capaci
o the
uce
pres
one
ecti
the
r is alter
mo
uired to
of
ing
t, w
e, dtile iro
near
ting
,
TE: External Dimensions of BH 3.00 I
Ext
l Dim
f BH
B
BH 3.00 IGT are same.
BH
T
Model Types
Fo
,
pl
NAVCO O IN
INDIALLLL
P,PP,PP
(JO
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Empir
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In
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Kondivita
La
J.B. N
g
ar
An
dheri
(E
),
Mumbai-400 05
9.
India.
22 –– 3 33
3
5115
Web Ste: :
www.avcond.c
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w.
k
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nenn
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Model
Tyype
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NAVCVVOBH 3
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lable
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d
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I
mpac
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T
Tim
p
acc
t
Im
p
pa
ct
in
g
Vibrator
:
Th
e
pa
a
a
actin
g
l BH 3
de
ve
a
ig
hh h
uudeee
ti
ti
ti
ti
ve
impuls
e
he pis
ton st
ri
ke
base of the bore s
ha
rp
ly
on ea
ch
cy
y
th
p
p
Momnntntnnumm
a
a
n
n
ndndn
en
rgrg
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yy y
aare
transmittedd
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h
ththeee bbbbi
n wall aand
into ttthehe materiaia
l
bbby
e
ach ellastiti
c
coolllisisisiio
iin bebbbb
b
eeen n tth
pipp
p
stoo an thehehe
vibrator b
as
e.
e
pe
p
p
ti
ti
mp
p
p
ac
ts
i
al
o
o
f
V
ff
pr
ob
ob
vo
lv
ing
co
hesi
v
m
a
wi
w
wth
m
p
charac
te
ics. T
he
y
ar
e
ec
tive
in
c
le
le
an
in
in
g
g
ad
ad
d
ad
he
ri
ng
n
ng
ial fr
empt
y
p
p
ro
ce
lellnt VVV
VVibiraratototo
to
to
:
Th
e
lentnt Model
B B BBBBH HHHH3 333
SGO
ge
ge
n
n
sa a
sooidalal o
u
cr
cr
ng
a a aan aiaiaiair rrrcush
sh
s
ion at ee
ee e achhh
pi
pi
p
st
VC
O
S
Vib
al
l
a
iv
e
v
vi
b
or
y
bl
es
nd f ffee
ders.
d
Im
pa
ct Vibrator:
Th
e
Ti
Impact Mod
el
3
3
IG
T
delivers a single, high amplitude
b
e
op
ereat
at
edee
u
si
s
ng
neumumatat
ic
ic
oo
o
eleetro
o
o
tttimeer
pppp
ro
g
g
g
ammabl
e
cooo
ontr
o
or a
a
y
dedevivivivice t
ha
cn delivevevevevveverrrr an intnt
ntntererererererermimimtttttt
en
gn
gn
gn
al to the unite im
pu
pu
pu
ls
e
of
of
of
i
ng
h
op
pe
d
p
ifi
NAVCO Timed
h
o
si
ng
P
roper Vibr
at
or
Pr
op
in
n
g
g
InInIn
f
vi
crittical t
o the
susucccces
s of
t
he ff
low aidsystem.
h
ree ma
jjojjj
siider in s
ppppp
p
is
vi
b
or
s
fo
pp
er
a
p
pp
p
li
tions
ar
Th
l
ll
the ho
pp
pp
er
.
T
e
volume
a
nd
m
as
s
of
m
at
er
ia
l inn
t
he
he
h
op
pe
r.
T
e
The NA
VC
VCO OOO
OBH 333
i
s
s ssa me
di
dididi
um dut
ut
u
y
y
y
vivivibrbr
ataa
a
m
m
ayayay
b
e e e
ap
totot
h h h
h
opoo
ca
pa
pa
papa
p
ci
cicici
ty
0
0
–
2
ns
wi
thth
aa a a w
al
l
thickn
es
e
of
of
1/4”
(6
5 5 5
mmmmm
m
)
)
–– –
8””” (9..5
mmmm
).).).
On t
hihih
nn
er
w
,
a
a
re
re
in
f
f
is
r r
r
eee
eomme
nd
nd
nd
e
e
e
ttt
t
hi
ck
ck
k
erer w w w
al
al
l
la
g
er u
uu unit
lddd b e e
sese
sslected
Installati
/4
t
/
3
rd
of the height of the hopper from
g
mu
lt
ipipip
lelele
v vibibrarators m
ayayay
b be e re
re
quququ
q
ir
ed
The vi
in
g
bbb
well
ded to t
ho
pp
e
y
dr
og
di
ng
r
reinf
rr
eq
d,
i
e
s
p
welde
lso o
wi
th
h
h
ydyyroge
n
n
To e
e
propo
o
on
n
off
NA
vi
b
s,
N
AV
ff
er
s
mp
mp
mp
lete l
accecessssoroiies. T
he
B
BH 3 ha
ha
s a a3/3/8”8” NPT Inletet aandnd there
foree
uttttil
izes 3/8" NPT
ies.
The NAVCO BH 3 is available in three model types; Impacting, Silent and Timed Impact.
e
s av
n t
o
pes;
ngS
nd
ed I
.
Impacting Vibrator:
The Impacting Model BH 3 IGO
Im
develops a high amplitude repetitive
lops
impulse when the piston strikes the
base of the bore sharply on each
cycle. The piston is air cushioned at
the head plate on the upward stroke.
Momentum and energy are
transmitted through the bin wall and
into the material by each elastic
collision between the piston and the
vibrator base. The repetitive impacts
enable the Vibrator to affect material
enable the Vibrator to affect mater
over a large area of influence
ver a large area of influence
overcoming the bulk material
vercoming the bulk material
strength and reducing the wall
strength and reducing the wall
friction angle.
riction angle.
NAVCO Impacting Pneumatic Piston
NAVCO Impacting Pneumatic Piston
Vibrators are excellent for all bulk
when t
cle. The piston is air cushioned at
e head
ibrators are excellent for all bulk
Mode
h
amplit
late on the upward stroke.
thro
tw
e
re
IGO
repe
the
ve i
material flow problems, especially
material
those involving cohesive materials
those in
with marginal to poor flow
characteristics. They are also effective
in cleaning adhering material from
empty bins and process vessels.
Silent Vibrator:
The Silent Model BH 3 SGO
generates a sinusoidal output by
creating an air cushion at each end of
eati
the piston stroke. NAVCO Silent
the
Pneumatic Piston
Pneumatic Piston Vibrators are
effective in applications involving
effective in applications involving
non-cohesive or free flowing
non-cohesive or free flowing
materials where a slight increase in
materials where a slight increase in
energy is required to initiate or
energy is required to initiate or
maintain flow. The Silent Units are
maintain flow. The Silent Units are
low
argnal to
rist
bins and
rate
sinu
on stroke. NA
lems, espcially
oor flow
also eff
mater
ss vessels.
r
rators are
erials
om
put by
end of
ilent
so idea
also ideal as drivers for vibratory
tables and feeders.
ta
a
Timed Impact Vibrator:
The Timed Impact Model BH 3
IGT
delivers a single, high amplitude
impulse each time it is energized.
impulse each time it is energized.
NAVCO Timed Impact units may
NAVCO Timed Impact units may be
operated using pneumatic or
electronic timers, programmable
controllers, or any other device that
can deliver an intermittent control
signal to the unit. The impulse of
Timed Impact unit is very effective in
med Impact unit is very effective in
evacuat
evacuating hoppers and process
vessels. Specific advantages of
vessels. Spec
NAVCO Timed Impact units are low
noise levels and very low air
noise levels and very low air
consumption.
consumption.
med
ic
llers,
s dr
s for
p
s,
othr
rs an
c advantages of
Impact units are low
Choosing Proper Vibrator
Proper sizing and Installation of vibrators are critical to the success of the flow aid system.
er siz
The three major factors to consider in selecting pneumatic piston vibrators for hopper applications are:
e t
¾The wall thickness of the hopper.
e wa
¾The volume and mass of material in the hopper.
¾The flow characteristics of the bulk material.
flow characteristics of the bulk material.
and
stallation o
r factors to con
thickness of
bratos are
electng pneumatic
ton
rat
r ho
ca
rat
BH
r
t
t control
rocess
e:
The NAVCO BH 3 is a medium duty vibrator. It may be applied to hoppers with a capacity of 10 – 20 tons, with a wall
thickness of 1/4” (6.35 mm) – 3/8” (9.5 mm). On thinner walls, a reinforcement plate is recommended. On thicker wall, a
larger unit should be selected.
The optimal mounting location for a vibrator in a typical
The optimal mounting location for a vibrator in a typical
hopper application is at the point of the flow restriction. If
hopper application is at the point of the flow restriction. If
the exact position is unknown, the vibrator should be
the exact position is unknown, the vibrator should be
located from 1/4
located from 1
the discharge. For large hoppers, hoppers with unusual
the discharge. For large hoppers, hoppers with unusual
geometry, or particularly difficult material flow problems,
multiple vibrators may be required.
The vibrator mounting plate should be skip welded to the
hopper wall using a low hydrogen welding rod. If
reinforcement is required, it should be skip welded, also
with a low hydrogen rod.
To ensure proper application and operation of NAVCO
vibrators, NAVCO offers a complete line of system
accessories. The BH 3 has a 3/8” NPT Inlet and therefore
utilizes 3/8" NPT accessories.
For Assistance, please contact
NAVCO INDIA LLP,
(JOINT VENTURE OF KJN ENTERPRISES & NAVCO, USA)
C/o. KJN Enterprises
68A, New Empire Industrial Estate,
Kondivita Lane, J.B. Nagar,
Andheri (E), Mumbai-400 059.
India.
s
r
eometry, or particularly difficult material flow problems,
r Assistance
shou
th
h
to 1/3rd of the height of the hopper from
to 1
brator mount
wall uing a lowh
rcement is
a low
nsur
ator
plateshould
uire
rod.
er applicti
CO o
accessor
ease contact
3/
.
t should b
and operation
a co
RE
o.
Ent
ne,
al
ate,
a
or. It
e skip
en wel
i
ine o system
plied
alls
Installation
he
od. If
d, a
VCO
on
pers with a
rcement plate
Ph.: 022 – 28342079 / 30888514
Ph.: 022 – 28342079 / 30888514
Fax: 022 – 30888515
Fax: 0
Web Site: www.navcoindia.com
www.kjnenterprises.com
www.navco.us
Email: info@kjnenterprises.com
sales@navcoindia.com
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