Operation
An expanded metal screen is mounted inside of and parallel
to the hopper wall. The shaker support frame is rigidly
mounted to the screen through the use of two bolt and spacer
assemblies. The bolts pass through elastomer sealing mounts
which permit the screen to be actuated externally by the
shaker assembly. A support bar welded to the hopper supports
the shaker reaction spring and shaker assembly. The shaker
which is air operated imparts a thrusting action to the
screen with an amplitude (typically ± 1/8")
which is effective in shearing or under-cutting material
producing gravity flow. Quiet operation is assured.
Typical
Installations
Single or multiple Bridge Breaker flow aids can be used
in common bins and chutes to prevent formation of rat
holes or material bridging. Larger installations commonly
require more than one flow aid, staggered in mounting
height around the circumference of the outlet. Activation
can be sequenced to create maximum, cascading effect. |
 |
1.
Direction of vibration
2. Gasketed isolation mounts seal material in bin.
3. Entire Bridge Breaker assembly vibrates parallel to the
bin wall, continually undercutting bridge formation.
4. Exhaust muffler.
5. Pneumatic shaker.
6. Only point of contact between assembly and bin is where
shock absorber touches bracket welded to bin. (No unwanted
vibrations are transmitted to bin or surrounding equipment.)
7. Loosened material moves by gravity, preventing formation
of bridging or rat holing.
Technical Specifications:
•
Frequency:
900-1200 CPM
•
Amplitude: 0.125 – 0.25 "
• Thrust: 1,200 lbs. Approx.
• Air Requirement: 30 – 40 PSIG, 5 SCFM continuous
duty,1 SCFM intermittent
• Noise Rating:
• Short
Stroke units: Readings taken @ 2ft at 40 psi = 65 db (A)
• Long
Stroke units: Readings taken @ 2ft at 40 psi = 72 db (A)
