Refill control mechanism for a liquid holding tank
    3.
    发明授权
    Refill control mechanism for a liquid holding tank 有权
    液体储存罐的补充控制机构

    公开(公告)号:US07814930B1

    公开(公告)日:2010-10-19

    申请号:US11540209

    申请日:2006-09-29

    IPC分类号: F16K31/18

    摘要: A liquid refill control for a holding tank includes a pneumatic solenoid valve for delivering liquid to the tank in an open state and restricting delivery of the liquid to the tank in a closed state. The solenoid valve has a pneumatic exhaust. A container mounted in the tank includes an inlet for introducing liquid from the tank into the container and an outlet formed below the inlet. A discharge valve is operably mounted to the tank for alternately closing and opening the outlet. A lower float closes the discharge valve when the liquid is at or above a predetermined level in the tank and opens the discharge valve when the liquid is below the predetermined level to discharge liquid from the container. A pneumatic exhaust valve alternately opens and closes the pneumatic exhaust which in turn changes the state of the pneumatic solenoid valve. An upper float mounted in the container maintains the pneumatic exhaust valve in one of the open and closed conditions when the liquid in the container is at or above a threshold level and maintains that valve in the other condition when the liquid in the container is below the threshold level.

    摘要翻译: 用于保持箱的液体补充控制装置包括用于在打开状态下将液体输送到罐的气动电磁阀,并限制液体在关闭状态下传送到罐中。 电磁阀具有气动排气。 安装在罐中的容器包括用于将液体从罐引入容器的入口和在入口下方形成的出口。 排放阀可操作地安装到罐上,以交替地关闭和打开出口。 当液体处于或高于罐中的预定水平面时,下浮子关闭排出阀,并且当液体低于预定水平时打开排出阀,以从容器排出液体。 气动排气阀交替地打开和关闭气动排气,这进而改变气动电磁阀的状态。 当容器中的液体处于或高于阈值水平时,安装在容器中的上浮子将气动排气阀保持在打开和关闭状态之一,并且当容器中的液体低于 门限等级。