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1. 发明授权

US5653261A Selector valve 失效
标题翻译：选择阀
公开(公告)号：US5653261A
公开(公告)日：1997-08-05
申请号：US673332
申请日：1996-06-28
申请人： Mark D. Dalhart , Ralph F. Gessner, Jr.
发明人： Mark D. Dalhart , Ralph F. Gessner, Jr.
IPC分类号： F16K11/074 , E03B5/00
CPC分类号： F16K11/0743 , Y10T137/86501 , Y10T137/86823 , Y10T137/87627
摘要： An improved selector valve includes a sealing disc with a sealing face biased against an opposed sealing face of a port plate. The sealing disc has a channel located in the sealing face which communicates with an outlet port and a single selected inlet port on the port plate while simultaneously sealing off all other inlet ports. A venturi eductor has a suction passage sealed directly to the port plate outlet for connecting the venturi directly to a selected inlet port. A connection bridge spans a tolerance gap between the port plate to the eductor. The flow path of the fluid through the selector valve has been streamlined to eliminate stagnation points and minimize turbulent flow of the fluid. As a result, the dilution rate of the chemical and water being dispensed upon actuation of the valve is improved and purging of the selector valve is eliminated because the amount of residual chemical remaining in the selector valve is minimized. Moreover, the material selection of the sealing disc enables a wider temperature range of operation for the selector valve without thermal expansion or contraction which may detrimentally effect the seals between the adjacent proponents of the selector valve.
摘要翻译：一种改进的选择阀包括密封盘，其密封面偏压在端口板的相对的密封面上。密封盘具有位于密封面中的通道，该通道与端口板上的出口和单个选定的入口连通，同时密封所有其它入口。文氏管喷射器具有直接密封到端口板出口的吸入通道，用于将文丘里管直接连接到选定的入口。连接桥跨越端口板与喷射器之间的公差间隙。通过选择阀的流体的流动路径已经流线化，以消除滞留点并使流体的湍流最小化。结果是，由于阀门的致动时分配的化学品和水的稀释率得到改善，并且由于残留在选择阀中的剩余化学物质的量最小化，所以选择阀的清洗被消除。此外，密封盘的材料选择使得选择阀的操作温度范围更宽，而不会发生热膨胀或收缩，这可能不利地影响选择阀的相邻支撑体之间的密封。

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