| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum sewer pipe system for reducing a noise level during a discharge or cleaning procedure. <P>SOLUTION: This invention relates to the vacuum sewer pipe system having a sewage receiving part 1, a sewer pipe 3 connected to the sewage receiving part by a discharge valve 2, a vacuum generating means 4 for generating a vacuum in the sewer pipe, and a control mechanism 5 for controlling the discharge valve. For further quickly closing the discharge valve 2 after discharging sewage from the sewage receiving part 1, the vacuum sewer pipe system has further a ventilation means 10 directly fluidly communicating with the discharge valve 2. The control mechanism 5 is arranged so as to control the ventilation means 10. This invention also relates to the discharge valve 2 for such a vacuum sewer pipe system. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
