service. In some cases, performance with materials like corn silage is improved by removing
this spin-stop.
Spin Stop in Spout
Screw / Screw Configurations
Most Vincent screw presses use the Interrupted Flight Screw design. The interruptions leave
room for stationary resistor teeth that are mounted outside of the screen. These teeth go
through the screen and reach almost to the shaft of the screw. This design of screw press
stands in contrast to a Continuous Screw design. The main advantage of the interrupted
design is that solids material must accumulate in the interruptions until sufficient consistency
is reached for the solids to be pushed toward the cake discharge. There is a reduced tendency
for the material being pressed to co-rotate with the screw. Also, there is more agitation
within the press and, consequently, quicker and more thorough dewatering. Pushing the
material through the compression zones past the resistor teeth will also shred the material a
bit.
Interrupted Flight Screw with Resistor Bar
For applications where tramp material is more likely to enter the press, a continuous-flighted
screw is often used. Typically, if maximizing dryness is a priority, the screw shaft is tapered
to provide increased compression.
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