Fluidized Aeration Disc

Fluidized aeration discs are are used to create a flow of dry bulk solids from vertical storage bins and silos.

TYPE: Silo/Hopper Discharge Vibration Aeration Equipment

MODEL: Fluidized Aeration Disc

Fluidized aeration discs are designed to intensify the discharge of aeratable products from bulk storage bins or silos by forcing air through a fabric-base layer and fluidizing the products to discharge.

The basin design requires minimal height for easy accessibility to equipment wtihin the silo skirt.  The large square footage of aerated material allows for easy discharge.  The air disc is operated in conjuction with a PD blower and control valves.

How Do Aeration Discs Work?

Positive discharge of a silo is accomplished by pushing pressurized air through the dished-shaped, one piece, 4-ply fluidized bed cloth. The cloth is supported by a perforated plate that supports the weight of the silo product at rest and allows air to pass vertically during use. Air is evenly distributed around the large diameter of the disc, allowing for constant, continuous first in, first out (FIFO) product flow.

Applications

Fluidized aeration discs are used in bulk solid material handling systems.  Aeration discs, also known as silo fluidizers, bin aerators, or silo aeration bottoms, are used to create flow of dry bulk solids from vertical storage bins.

They are commonly used in silos containing:

  • Soft wheat flour
  • Soy flour
  • Corn flour
  • Hard wheat flour 
  • Corn starch
  • Semolina
  • Tortilla

Features

  • 20° slope aids in the discharge of material
  • Laser cut perforated metal provides long lasting support for the disc liner and eliminates internal weld points
  • Inspection ports allow for easy access to the air chamber
  • Its dished-head shape is simple and sanitary
  • A slip flange discharge allows for multiple positions of the discharge valve
  • One piece liner assembly; 4 ply polyester liner, custom fabricated per design
  • Finish: The carbon steel air chamber is constructed with interior primed and exterior epoxy coated; 304 Stainless Steel in product contact throat

Options

  • 2" activation kit for multiple silo applications
  • Replacement fabric liner

Specifications

  • Contact:  single sheet, 4 ply polyester, discharge chute: carbon steel (FDA epoxy)
  • Non contact:  carbon steel (interior- primed, exterior- FDA epoxy)
  • The typical geometry on a standard 4:1 vertical round bin is an aeration disc that is half the diameter of the silo.

Schematic Measurements, Single Discharge:

Single Discharge Aeration Disc
12"/304 mm
Air Disc Size A B C D E F G H J K L
3' 35.5/901.7 29.5/1003.3 41.5/1054.1 16 .75/19.05 10.25/260.35 12/304.8 15/381 13.75/349.25 12 .5/12.7
4' 75.5/1917.7 52/1320.8 55.5/1409.7 24 .8125/20.6375 11.1875/284.1625 12/304.8 15/381 13.75/349.25 12 .5/12.7
5' 59.5/1511.3 63.5/1612.9 67/1701.8 24 .8125/20.6375 14.375/365.125 12/304.8 15/381 13.75/349.25 12 .5/12.7
6' 71.5/1816.1 75.5/1917.7 79/2006.6 24 .8125/20.6375 15.25/387.35 12/304.8 15/381 13.75/349.25 12 .5/12.7

Schematic Measurements, Dual Discharge:

Dual Discharge Aeration Disc
12"/304 mm
Air Disc Size A B C D E F G H J K L
5' 59.5/1511.3 63.5/1612.9 67/1701.8 24 .8125/20.6375 13.625/346.075 12/304.8 15/381 13.75/349.25 12 .5/12.7
6' 71.5/1816.1 75.5/1917.7 79/2006.6 24 .8125/20.6375 13.625/346.075 12/304.8 15/381 13.75/349.25 12 .5/12.7

Air Flow, Pressure and Blower Model
for Aeration Disc
(5 PSIG Operation)
Aeration
Disc
SCFM PSIG Relief
PSIG
Pressure Loss PSI through 100 ft. of 3" Aeration Line and (4) 90S Model HP Max Height
Above Air Disc (ft.)*
4' Single 120 5 7 .25 33URAI 5 34
5' Single 200 5 7 .68 36URAI 10 31
6' Single 290 5 10 1.4 45URAI 15 26
5' Dual 160 5 7 .44 36URAI 7.5 33
6' Dual 270 5 10 1.22 45URAI 15 27

For more information on Fluidized Aeration Discs, please contact a Thomas Conveyor & Equipment Pneumatic Engineering Specialist at 844 220 0086 or click on the Contact Us button above.

QUESTIONS? CALL 844-220-0086