Control system for a vacuum pump used for removing liquid and a method of controlling said pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 15, 2003
Grant Date -
N/A
app pub date -
Dec 11, 2000
filing date -
Jun 11, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system for a vacuum pump used for removing liquid from a suction washer of a pulp mill includes a pump with adjustable rotation speed and means for defining the operating point of the vacuum pump and a control/central unit wherein the performance chart of the vacuum pump is recorded and wherein the defining data of the vacuum pump operating point is fed. The control system further includes a resistance function on the suction side of the vacuum pump which depicts the suction resistance formed of at least the suction object in the suction side. The resistance function is determined by changing the rotational speed of the vacuum pump and recording the operating points in the control/central unit at various rotational speeds.
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