Metalfab Posibin Bin Activator

Metalfab's PB Posibin allows dry bulk solids issue-free discharge from storage silos and bins.

Article

TYPE: Silo/Hopper Discharge Vibration Aeration Equipment

MODEL: Metalfab PB Posbin

Metalfab's PB Posibin allows dry bulk solids issue-free discharge from storage silos and bins.  It is designed to process difficult to handle materials such as micron-sized powders to fibrous substances, and allow these materials to flow freely, on-demand, in a FIFO (first in, first out) basis.

The Posibin design showcases a static cylindrical bin fitted with Metalfab's signature bin activator.  The vibrating motor unit, attached to the bottom of the bin equipped with solid steel suspension arms and a flexible reinforced sleeve, provides continuous movement of the product in the bin.  A conical primary baffle, mounted within the bin activator, moves horizontally with the unit keeping the bin contents continually moving and eliminating potential clogging and stoppages such as bridging, ratholing, etc.

A secondary conical baffle, situated at the final discharge, moves at a different amplitude, preventing jamming and compaction in this critical stage. 

How Do Bin Activators Work?

Positive discharge or First In First Out (FIFO) flow of a silo is accomplished by the internal cone-shaped baffle which is rigidly attached to the body of the bin activator.

This vibrating cone replaces a major portion of the standard fixed cone. The bin activator unit moves horizontally by the unbalanced weights of an attached vibrator. The cone baffle relieves the weight of the material from the lower section of the bin activator and acts like a wedge as it moves beneath the material and pushes it in all areas adjacent to the cone's surfaces. This powerful force is also transmitted to the material in the upper portion of the bin as the motion is carried from particle to particle. Product discharges around the periphery of the baffle toward the outlet of the Metalfab bin activator.

Applications

Used in bulk solids material handling systems, Bin Activators, also known as Live Bottom Bins, Shaker Bins, or Vibrating Silo Bottoms, are used to create a flow of dry bulk solids from vertical storage bins. The Live Bottom will overcome sporadic or irregular discharge problems created by arching, bridging, and ratholing. The typical geometry on a standard 4:1 vertical round bin is a live bottom that is half the diameter of the silo.

Products Handled

  • Alumina
  • Carbon Black
  • Clay
  • Diatomaceous Earth
  • Magnesium Oxide
  • Salt
  • Soda Ash
  • Titanium Dioxide
  • Zinc Oxide
  • Semolina
  • Calcium Carbonate
  • Lime
  • Limestone
  • Flour
  • Sugar
  • Starch
  • Activated Carbon
  • 3-A Dairy

Features/Benefits

  • Two PB posibin models, with capacities ranging from 3 to 750 cu.ft., can handle materials with bulk densities to 200 lbs/cu. ft.
  • Largest units are mounted to the static bin by solid, carbon steel hangers able to handle capacities more than 500,000 lbs.
  • Posibins can also be hung from overhead.
  • Nearly noiseless operation
  • Diameters: 16 models available ranging from 3' - 8'
  • Capacities: 25 to 750 cu. ft. and up
  • Bulk density: to 50 lbs./cu.ft.
  • Operating characteristics: Posibins provide positive release of often difficult to discharge materials in a variety of densities and particle sizes.
  • Construction: Carbon steel, 304 or 316 stainless steel bins with full sized bin activators, special coatings

Options

  • Other Metalfab upstream/downstream feeders, bulk bag unloaders and hoppers

Dimensions

Posibin 25 to 750 cu. ft. Capacity
Model A B C D E F G H I J HP
PB 3-25 36 36 58 5/8 20 7/8 40 83 5/8 21 1/2 31 3/8 5 7 1 1/2
PB 3-50 36 72 94 5/8 20 7/8 40 119 5/8 21 1/2 31 3/8 5 7 1 1/2
PB 4-50 48 42 71 1/2 21 7/8 52 96 1/2 27 1/2 37 3/4 5 7 1 1/2
PB 4-75 48 70 99 1/2 21 1/8 52 124 1/2 27 1/2 37 3/4 5 7 1 1/2
PB 4-100 48 85 114 1/2 21 1/8 52 139 1/2 27 1/2 37 3/4 5 7 1 1/2
PB 5-100 60 54 90 3/16 21 1/2 64 115 3/16 33 1/2 43 3/4 5 7 1 1/2
PB 5-150 60 84 120 3/6 21 1/2 64 145 3/16 33 1/2 43 3/4 5 7 1 1/2
PB 5-200 60 114 150 3/16 21 1/2 64 175 3/16 33 1/2 43 3/4 5 7 1 1/2
PB 6-200 72 78 121 1/8 23 78 146 1/8 41 50 1/2 7 9 3
PB 6-250 72 96 139 1/8 23 78 164 1/8 41 50 1/2 7 9 3
PB 6-300 72 116 159 1/8 23 78 184 1/8 41 50 1/2 7 9 3
PB 7-300 84 88 138 23 90 163 47 56 1/2 7 9 3
PB 7-350 84 102 152 23 90 177 47 56 1/2 7 9 3
PB 7-400 84 106 156 23 90 181 47 56 1/2 7 9 3
PB 8-500 96 99 155 7/8 31 102 180 7/8 53 65 3/8 7 9 3
PB 8-750 96 162 219 31 102 244 53 65 3/8 7 9 3

For more information on a MetalFab PB Posbin and how it can improve your silo discharge processes, please contact a Thomas Conveyor & Equipment Pneumatic Engineer or call us today! 

QUESTIONS? CALL 844-220-0086

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