◄ Diamondback Hopper

◄ Blenders

◄ Air permeation units

◄ Coal industry hopper

► Licensed fabricators

◄ Milling industry  hopper

◄ Oscillating plate hopper

 

Fine powders can discharge efficiently using a densifying screw feeder. By limiting aeration upstream, venting entrained air and compacting material, while isolating the process from downstream air penetration, a consistently densified product is achievable without additional settling time or erratic flow often associated with fine powders.

Standard Diamondback

Oscillating plate hopper

Blenders

Licensed fabricators

Coal industry hopper

Densifying screw feeder

The Diamondback Technology densifying screw feeder easily retrofits existing bins to eliminate flooding, flushing and erratic flow while providing excellent anti-arching capabilities.     The screw seals against flushing and densifies powders, removing unwanted air for sack or bag filling. It also provides a controlled uniform density for weigh hopper applications.  The screw comes with a variable speed that accommodates both fast and dribble feed conditions.  It also handles extremely cohesive bulk materials at consistent output densities.

 

Typical applications

 

u   Eliminating flushing and erratic flow from existing bins

u   Controlling multiple feed rates to weigh hoppers

u   Sealing against pressures and vacuum

u   Prefeeding rotary valves to eliminate leakage effects

u   Densifying powders before packaging or bag filling

u   Handling cohesive bulk materials at consistent output

      densities without hangups

 

Features

 

u   Anti-arching capabilities equivalent to a conical hopper

      outlet over three times the screw’s diameter

u   Wear-resistant steel coating on key flight areas

u   Removable screw and assembly for easy repairs

      and maintenance

u   Adjustable flow pattern control for field adjustments

u   Extra mating flanges for easy retrofitting     

u   Cantilevered screw to reduce bearing and  seal problems

u   Available in 6-, 12- and 18-inch diameters

 

 

A    Anti-arching Diamondback Hopper with extra top

      mating flange to retrofit existing bins

B    Flow pattern adjusters

C    Screw assembly unit for easy removal

D    Optional longer length screw

E    Diamondback air removal hopper for product

      densification

F    Pneumatic end plate actuator

G    Pressure plate

H    Vent for air bypass rotary feeder

 I    Diamondback discharge chute

Copyright 2007 Diamondback Technology, Inc.

 

 

Click here to request a free copy of Compacting Screw Feeders Can Facilitate the Handling of Fine Powders, a paper authored in 2007 by Lee V. Dudley and Kristin M. O’Quest.

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