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Correct
location of electromagnetic vibrators is of prime
importance in obtaining maximum efficiency from the
selected model. Note: Operate vibrators on hoppers only
when the hopper is open to flow. Otherwise, vibration may
pack the hopper contents. |
Curved
Surfaces
Select a bracket made
from a channel section or a bent plate when mounting
a vibrator to a curved surface. A center gusset is
required for all totally enclosed vibrators, and two
blocks of sufficient height to contact the curved surface
are required for Models V-75 and V-500. The selected
gusset or blocks must be securely welded to the underside
of the bracket and curved surface. This arrangement is
required to stiffen the mounting and transmit vibrations
directly to the hopper contents. Mounting bots heads can
be welded to the underside of the bracket. |
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Rectangular
Hoppers
Mount vibrator and
mounting channel as for a conical hopper or a curved
surface. If a stiffener obstructs mounting, mount the
vibrator in the middle of the panel next to the stiffener.
If required, a second vibrator should be bolted on the
opposite face at a slightly higher elevation. |
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Hopper
with Sloping Discharge
Mount the vibrator on the
center line of the hopper, as close to the discharge as
possible. An additional vibrator may be require on the
discharge chute. |
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Rectangular
or Cylindrical bins with
Flat Bottom and Center Discharge.
Mount directly to the side of the bin, just below the
point where the materials' natural angle of repose
intersects the side, as shown in the sketch. |
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Parabolic
Bins or Hoppers
Mount the vibrator within
one foot of each discharge opening and in line with center
of opening. |
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Conical
Hoppers
Mount the vibrator to the
hopper (as indicated above) 12 to 18 inches (300 to 450
mm) or less from the discharge. |
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Inclined
Chutes
Chutes less than 10 to 12
feet (3 to 3.6 m) long are usually equipped with just one
vibrator located well below the center. Allow for the
vibrator to be moved about one foot (300 mm) in either
direction. On chutes requiring more than one vibrator, the
first one should be located 18 to 24 inches (450 to 500
mm) from the outlet. The second unit should be mounted
about half-way between the first vibrator and the upper
end. Allow for the vibrators to be moved about 1 ft (300
mm) in either direction. |
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Screw
Feeder
Screw conveyors feed from
the back of the hopper. Vibrator should be 1/3 from the
inlet. If two vibrators are used, place second vibrator on
opposite side, 1/3 from the discharge. Do not operate the
vibrator at the discharge end until the back of the bin is
empty and vibrator at the inlet is shut off. |
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Short
Screw Feeder
Place vibrator as close
as possible to feeder.
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Long
Bin
Belt conveyors feed from
the front of the hopper. Vibrator should be 1/3 from
front. If two vibrators are used, place one on opposite
side and 1/3 from back. Don not operate the back vibrator
until the front is empty and the front vibrator is shut
off. |
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Belt
Conveyor and Standard Bin
Mount vibrator on the
belt discharge side of the hopper. Follow mounting
instructions for the appropriate bin type on page 10.
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Concrete
Hopper or Lined Wooden Hopper
For wooden hoppers lined
with thin sheet metal, attach vibrator mounting bolts to
the hopper lining.
For
concrete hoppers, secure a steel plate across the top
inside of the hopper, to the discharge opening along the
side to which the vibrator will be mounted. At about
one-quarter or less of the distance from the discharge to
the vertical side, cut an opening to allow the vibrator to
be
bolted to the steel plate.
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Vibrating
Feeder and Standard Bin
Mount vibrator on the
feeder infeed side of the hopper. Follow mounting
instructions for the appropriate bin type on page 10. |
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Note:
Drawings illustrate typical installations. Specific
installations may require slight variations. For other
applications not covered here, please consult us for
recommendations. |
