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 Mounted
atop a storage tank, the Automatic Bin Vent filters the exhaust air and
literally allows the tank to breathe. When material is conveyed to the
storage tank, the increased volume within the tank reduces the air stream
velocity, the material drops, and the excess air is vented through the
filter. During the venting process, airborne dust particles are trapped
by the filter bags. Sequentially timed bursts of compressed air controlled
by solenoid valves, pulse the bags and dislodge the dust particles. All
of the product remains in the storage tank and clean air exhausts through
the tank vent into the atmosphere.
Materials
of construction
The bin vent is constructed of epoxy-coated carbon
steel. For applications requiring it, the material contact surfaces or
the entire unit can be constructed of 316 or 304 stainless steel. Stainless
steel construction is an excellent choice for abrasive, corrosive, and
foodgrade applications.
 Quick-access
door
The bin vent’s filter bags are easily accessed
for service through the quick-access door. Latches unscrew by hand and
swing to the side, allowing the door to open on left-hand hinges. The
filter bags and cages can be reached through the door for removal, cleaning
and eventual replacement.
Pulse-cleaned
filterbags
The filter bags are cleaned by bursts of compressed
air from the air accumulator. The air is directed through venturis, forcing
a greater volume to join the burst before it enters the bags for more
complete dust particle dislodging. Only a single row of bags is pulsed
at a time, leaving the remaining filter bags on-line. The interval between
bag pulsing is adjustable to provide the best bag cleaning.
Control
panel
 The
air pulse cleaning of the filter bags is regulated by the control panel.
The panel’s timer board allows easy adjustment of the frequency and
duration of each pulse, as well as displaying which row of bags is currently
being cleaned. All of the solenoids which fire the pulses on command from
the timer board are located in the NEMA 4 (standard) panel. Explosion-proof
NEMA 9 construction is optional. The panel is positioned within easy reach
to simplify maintenance.
Pressure
differential gauge
 Each
receiver is equipped with a pressure differential gauge. The gauge measures
the difference in pressure between the bag plenum and venturi housing,
informing the operator of the effectiveness of the filter cleaning system.
For more information,
contact
Premier.
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 Automatic
Bin Vents
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 Exhaust
fan
Each bin vent can
be equipped with an exhaust fan. The fan
overcomes the pressure differential across the filter bags, ensuring that
pressure does not build up inside the
tank. This is of particular importance when the bin vent is mounted on
a tank equipped with a pressure/vacuum (PV) valve, since the path of least
resistance for the unfiltered air is otherwise through the PV valve.
Weatherhood
As an alternative to the exhaust fan, a weather hood
can be used on the bin vent to prevent precipitation from entering the
exhaust port.
Safety
grid
The safety grid prevents bags and cages from falling
into the bin or storage tank.
Ladder
A ladder is available for bin vents to facilitate the
inspection of the exhaust fan.
Bin vent
hopper (optional)
Bin vent hoppers are offered with a choice of material
inlet and discharge sizes. Outlet flanges can be made to match Premier
Aerolocks™ or other manufacturers’ equipment, allowing the unit
to be easily incorporated into a new or existing system.
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