Screw press having screen vibration
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United States of America Patent
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Nov 26, 2019
Grant Date -
N/A
app pub date -
Jun 7, 2019
filing date -
Jun 7, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dewatering screw press has a hopper, a discharge outlet, a cylindrical screen flexibly mounted to the hopper and rigidly connected to the discharge outlet, a screw mounted to rotate beginning in the hopper and ending at the discharge outlet, the screw having an outer surface contacting the cylindrical screen, and at least one vibrator mounted to the cylindrical screen. Dewatering efficiency is improved by vibrations that are strong near the middle of the screen, while reducing or eliminating vibration near the discharge end of the screen where pressure is highest and a breaking of the seal between the screw and the screen due to vibration can reduce dewatering of sludge near the discharge end of the screen.
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