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    Self-backwashing filter apparatus
    1.
    发明授权
    Self-backwashing filter apparatus 失效
    自吸式过滤器

    公开(公告)号：US3709362A

    公开(公告)日：1973-01-09

    申请号：US3709362D

    申请日：1970-05-12

    Applicant: ECODYNE CORP

    Inventor： LINDSTOL A

    IPC: B01D20060101 ,  B01D24/48 ,  B01D23/26

    CPC classification number: B01D24/48 ,  B01D24/22 ,  B01D24/4631 ,  B01D2201/206

    Abstract: An improved self-backwashing filter of the type having a lower filter chamber and an upper backwash storage chamber. In one embodiment, the service outlet pipe means comprise an inverted Ushaped siphon pipe, the top of which is at least as high as the upper level of the filter means. Air vent means communicate with the siphon, and liquid level sensing means are positioned in the filter chamber above the filter means. The liquid level sensing means are operatively connected to the air vent means to open the air vent means, breaking the siphon when the liquid level falls past the liquid level sensing means. In another embodiment, a head box is provided, and the liquid inlet means comprise an inlet pipe, a head box, and a downtake pipe. Liquid from the inlet pipe flows over the first weir to the downtake pipe. If the downtake pipe does not accept all of this liquid, the overflow flows over the second weir, and is diverted to another filter or to the drain.

    Abstract translation: 一种改进的自反冲洗过滤器，其具有下部过滤室和上部反洗储存室。 在一个实施例中，服务出口管装置包括倒置的U形虹吸管，其顶部至少与过滤装置的上部高度一样高。 排气装置与虹吸管连通，液位检测装置位于过滤器装置上方的过滤室中。 液面检测装置可操作地连接到排气装置以打开排气装置，当液面下降通过液位感测装置时，虹吸管断开。 在另一个实施例中，提供了一个头盒，并且液体入口装置包括入口管，头箱和下管。 来自入口管的液体流过第一堰至下水管。 如果下水管不能接受所有这些液体，则溢流流过第二堰，并被转移到另一个过滤器或排水管。

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