5
Mounting Electromagnetic Bin Vibrators
The correct location of electromagnetic vibrators is of prime importance in obtaining maximum efficiency from the
selected model.
CURVED SURFACES Figure 1
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 sufficent height to contact the
curved surface are required for models V-75 and V-500. The selected gusset
or block must be securely welded to the bracket and curved surface. This
arrangement is required to stiffen the mounting and transmit vibrations
directly to the hopper contents. Mounting bolt heads can be welded to the
brackets underside.
CONICAL HOPPERS Figure 2 The vibrator should be bolted, as above, directly to the hopper face, 12 to 18 inches
(300 to 450mm0 or less from the discharge.
RECTANGULAR HOPPERS Figure 3
Mount each vibrator to the hopper wall the same as on a conical
hopper. If a stiffener obstructs mounting, mount the vibrator in the
middle of the panel next to the stiffener. A second vibrator, if required,
should be bolted on the opposite face at a slightly higher elevation.
HOPPER WITH SLOPING DISCHARGE Figure 4 Mount the vibrator
on the centerline of the hopper, as close to the discharge as possible. An additonal vibrator
may be required on the discharge chute.
RECTANGULAR OR CYLINDRICAL BINS WITH FLAT BOTTOM DISCHARGE Figure 5
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.
CONCRETE OR WOODEN HOPPER Figure 6 If a wooden hopper is lined
with thin sheet, the vibrator mounting bolts must attach to the lining.
Ina concrete hopper, a steel plate, secured across the top, should be placed
vertically from the discharge opening inside the hopper, 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, an opening should be cut (or allowed for in the
hopper construction plans) to permit bolting the vibrator to the steel plate.
INCLINED CHUTES Figure 7 Chutes less than 10 to 12 feet (3 to 3.6 m) long are usually
equipped with just one vibrator located considerably below center. Allow for the vibrator to be
moved about one foot in either direction.
On chutes requiring more than one vibrator, the first one should be located 18 to 24 inches
(450 to 600 mm) from the outlet. The second unit should be mounted about half way between
this vibrator and the upper end.
NOTE: Vibrators on hoppers should operate only when the hopper is open to to flow.
Otherwise, vibrations may pack the hopper contents.
