Liquid dispensing and recirculating module
    36.
    发明授权
    Liquid dispensing and recirculating module 有权
    液体分配和循环模块

    公开(公告)号:US06089413A

    公开(公告)日:2000-07-18

    申请号:US153672

    申请日:1998-09-15

    摘要: A liquid dispensing module for alternately dispensing and recirculating liquid including a module body having a valve stem mounted for reciprocating movement within a main passage of the body. The valve stem includes first and second valve members for respectively engaging first and second valve seats in the main passage. A recirculation passage communicates with the main passage. When the valve stem is in a dispensing position, liquid is prevented from flowing into the recirculation passage and instead flows out of one end of the module. However, when the valve stem is in a recirculation position, liquid is prevented from flowing out of the module and instead enters the recirculation passage where it may flow back to a main pump or supply in a recirculation loop. Apparatus and methods incorporating the liquid dispensing module are further described and encompass similar concepts.

    摘要翻译: 一种用于交替地分配和循环液体的液体分配模块,包括具有阀杆的模块主体,该阀杆安装成用于在主体的主通道内往复运动。 阀杆包括用于分别接合主通道中的第一和第二阀座的第一和第二阀构件。 再循环通道与主通道连通。 当阀杆处于分配位置时,防止液体流入再循环通道,而是从模块的一端流出。 然而,当阀杆处于再循环位置时,液体被阻止流出模块,而是进入再循环通道,在那里它可以流回到主泵或在再循环回路中供应。 进一步描述并入液体分配模块的装置和方法,并且包含类似的概念。