发明名称 Vacuum system
摘要 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.
申请公布号 US2002046780(A1) 申请公布日期 2002.04.25
申请号 US20010898690 申请日期 2001.07.05
申请人 HYVARINEN JOUNI;NASKI TOMMI 发明人 HYVARINEN JOUNI;NASKI TOMMI
分类号 E03F5/22;E03F1/00;(IPC1-7):B65B31/04 主分类号 E03F5/22
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