Vacuum system
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United States of America Patent
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Oct 29, 2002
Grant Date -
Apr 25, 2002
app pub date -
Jul 5, 2001
filing date -
Jul 10, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a method for transporting sewage in a vacuum system, which comprises a source (2) of sewage, which through sewer piping (1) is connected to a collecting or discharge space (15) for sewage, and means (4,5) for generating vacuum in the sewer piping (1). In order to attain a reliably operating system the method employs a rotary lobe pump (4,5) for generating vacuum, transported through the rotary lobe pump (4,5) to the collecting or discharge space (15) for sewage. The rotary lobe pump can also be used for emptying the collecting space.
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