Adjustable control valve system for rotating disc filter and method of operating the system
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Nov 13, 1997
filing date -
Nov 13, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control system for the vacuum cut-off valve of a rotating disc or drum filter is provided. The control system includes an actuator that is connected to the vacuum cut-off valve for adjusting the rotation of the vacuum cut-off valve with respect to the core. The actuator is linked to a controller which receives communications from a vacuum sensor that senses the level of vacuum inside the vacuum box. The controller sends signals to the actuator to either move the vacuum cut-off valve forward (or to a higher position) or rearward (or to a lower position) in response to the vacuum or pressure level inside the vacuum box.
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