Screw Ingredients Feeder                                                     Volumetric screw feeders are used to control the flow rate of bulk mat­erial from a bin or hopper. They are setup to be flood fed, so that regardless of the amount of mat­erial in a hopper above the inlet, the outlet rate will remain constant. It is this trait that makes screw feeders a critical part of a sys­tem, as they set the rate of material flow for the rest of the equipment down­stream. Screw feeders are avail­able to feed a wide range of materials.
 Output capacity is determined by shaft speed—rushes and temp­orary gaps in the flow are eliminated. This may prevent “flooding” or “choking” down­stream equipment that has no cap­acity to regulate input.
Multiple-screw feeders are used to control the flow rate of bulk mat­erial that tend to bridge from a bin or hopper.
Live bottom screw feeders are de­signed to be mounted under flat bottom bins to control the flow rate of materials that tend to pack or bridge under pres­sure. Tap­ered pitch or variable pitch screws are used inlive bottom screw feeders to draw the bulk material evenly from all areas of inlet opening.               
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Single Screw Capacity Size Max RPM CFH @ 1 RPM CFH @ Max.RPM   Size RPM CFH @ 1 RPM CFH @ Max.RPM 4 75 1.46 110   16 50 105 5,235 6 70 4.98 349   18 45 151 5,235 9 65 18.5 1,203   20 40 209 8,360 12 60 44.4 2,664   24 30 363 10,890 14 55 70 3,850