Flow metering valve with operator selectable boosted flow
    1.
    发明授权
    Flow metering valve with operator selectable boosted flow 失效
    流量计阀,操作员选择增压流量

    公开(公告)号:US4282898A

    公开(公告)日:1981-08-11

    申请号:US144148

    申请日:1979-11-29

    Abstract: PCT No. PCT/US79/01033 Sec. 371 Date Nov. 29, 1979 Sec. 102(e) Date Nov. 29, 1979 PCT Filed Nov. 29, 1979Heretofore the capability of operating a system (10), which supplies fluid to a hydraulic circuit (12), selectively at either a high or a low flow rate with only a single pressurized fluid source (14) has not existed. Such a system (10) includes a control valve structure (16) for controlling delivery of fluid from the source (14) to drive the circuit (12) and a flow control (22) for metering a portion of the fluid to the circuit (12). The capability of operating such a system (10) selectively at either a high or a low flow rate is advantageous in some modes of operation of the circuit (12). Herein, hydraulic circuitry (86) serves for controlling the magnitude of the portion in response to application of a signal thereto and a device (78) is provided for selectively applying the signal to the circuitry (86) for selectively directly controlling the magnitude of the portion.

    Abstract translation: PCT No.PCT / US79 / 01033 Sec。 371日期1979年11月29日第 (e)日期1979年11月29日PCT申请日1979年11月29日迄今为止,以高流量或低流量选择性地操作向液压回路(12)供应流体的系统(10)的能力, 只有单个加压流体源(14)不存在。 这种系统(10)包括用于控制从源(14)输送流体以驱动回路(12)的控制阀结构(16)和用于将流体的一部分计量到电路的流量控制(22) 12)。 以高流量或低流率选择性地操作这种系统(10)的能力在电路(12)的一些操作模式中是有利的。 这里,液压回路(86)用于响应于向其施加信号而控制该部分的大小,并且提供一个设备(78)用于选择性地将该信号施加到电路(86),以选择性地直接控制 一部分。

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