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    • 2. 发明申请
    • VARIABLE FLOW CONTROL USING LINEAR PUMPS
    • 使用线性泵的可变流量控制
    • WO2011014524A1
    • 2011-02-03
    • PCT/US2010/043449
    • 2010-07-27
    • GRACO MINNESOTA INC.CRYER, Michael A.SEBION, Michael J.
    • CRYER, Michael A.SEBION, Michael J.
    • B01F15/04B29B7/76G05D7/06G05D11/00
    • B29B7/726B29B7/728B29B7/7457B29B7/748
    • Variable (10) and fixed ratio 100 dispensing systems are disclosed. Each pump (12) is powered by a DC motor (14) spinning a gear pump (16) which is immersed in a hydraulic power pack (18). The power pack 18 output feeds a hydraulic linear motor (20) where its direction is controlled by a two output reversing valve (22). The hydraulic linear motor (20) drives one or two material pumps (24) which are mechanically attached to the hydraulic pump (12). The pressure and/or flow outputs of the material pumps (24) are controlled by altering the torque output of the DC motor (14), using a custom designed motor control module (MCM) (26). The MCM (26) uses a linear position sensor (28) and a pressure transducer (30) installed at the output of the material pump (24) as the primary process variables (or feedbacks) for controlling the pump (24). The system is not dependant upon expensive flow meters for controlling the pump output.
    • 公开了可变(10)和固定比例100分配系统。 每个泵(12)由旋转齿轮泵(16)的直流马达(14)驱动,齿轮泵(16)浸没在液压动力单元(18)中。 电源组18输出供给液压线性电动机(20),其中其方向由两个输出换向阀(22)控制。 液压线性马达(20)驱动机械连接到液压泵(12)上的一个或两个原料泵(24)。 通过使用定制设计的电机控制模块(MCM)(26)改变直流电动机(14)的扭矩输出来控制材料泵(24)的压力和/或流量输出。 MCM(26)使用安装在材料泵(24)的输出端的线性位置传感器(28)和压力传感器(30)作为用于控制泵(24)的主要过程变量(或反馈)。 该系统不依赖于用于控制泵输出的昂贵的流量计。