Electric Selection
The sizing of
electric vibrator is based on the
ratio of material weight in the sloped wall section to
the force output of the vibrator. For the majority of
applications, the ratio should be one pound of
vibratory force for every ten pounds of material in
the sloped wall section of the hopper.
The 3600 RPM rotary electric vibrator units are used
for the majority of applications and are well suited for
materials which are in the "free flowing" to "di
fficult to flow" range. For particularly stubborn materials, the
1800 RPM units will provide greater amplitude than a
3600 RPM unit of the same force output. When
selecting an 1800 RPM rotary electric vibrator, use
the chart to determine the proper size 3600 RPM
vibrator, then select the 1800 RPM unit which
develops the same force output.
To determine the weight of material in the sloped wall
section, multiply the bulk density of the product by the
volume (in cubic feet) of the hopper section.
To calculate the volume of a conical hopper:1.0472 x vertical heightx[R2+(Rxr)+r2]=Volume,where R is the radius of the cone at the transition point and r is the radius of the cone at the discharge.To calculate the volume of a rectangular or square hopper:Vertical height/3x(B+(Bxb)1/2+b) = volume where B is the area at the transition point and b is the area at the discharge.Most bin or hopper applications will require only one RE rotary electric vibrator. C leveland Vibrator Company recommends mounting the single drive,locating the unit at a point on the sloped wall section that is 1/3 the height of the wall.
Applications involved with particularly stubborn material or hoppers larger than 100 ton capacity may
require two or more vibrators. The recommended mounting is shown in figures 2 and 3. Normally, not more than three rotary electric vibrators would ever be required on a hopper or bin.
Benefit from 25 years of experience in the production and supply of
vibration generators with individually tailored problem solutions.
Conveying troughs and
VB series electric vibrators tables as well as our advisory service
with the design of vibratory systems are included in our range of
products and services.
