Pump system for liquid/solid materials with balanced output
    1.
    发明授权
    Pump system for liquid/solid materials with balanced output 失效
    液体/固体材料的泵系统具有平衡的输出

    公开(公告)号:US4490096A

    公开(公告)日:1984-12-25

    申请号:US522376

    申请日:1983-07-22

    Inventor: Frederick J. Box

    CPC classification number: F04B11/005 F04B15/02 F04B9/1178

    Abstract: A pump system, particularly suitable for pumping wet mixes and slurries, achieves an output of pumped material substantially free from pulsations or fluctuations by control movement of power pistons (12A,12B) within power cylinders (10A, 10B). The power pistons (12A,12B) are connected by piston rods (14A,14B) to pumping pistons (16A,16B) which suck material to be pumped in through valves (20A,20B) and out through valves (22A,22B) into a delivery pipe (26). A closed loop (32) connects annular chambers (13A,13B) of the power cylinders (10A,10B), and a continuously operating pump (P2) feeds the closed loop (32). The power pistons (12A,12B) on their suction strokes move faster than on the delivery strokes, whereby one or other or both pistons (12A,12B) are always moving forwards. Control adequate to achieve a smooth delivery of pumped material is achieved by providing sensing valves (PVA1,PVA2, PVB1,PVB2) on each power cylinder (10A,10B), these valves being arranged to be actuated at different positions of the power piston (12A,12B) within the cylinder. The sensing valves pass signals to check valves (CV1,CV2) to vent and close the closed loop (32) in response to actuation of the sensing valves and thus to control movement of the power pistons in the cylinders.

    Abstract translation: PCT No.PCT / GB82 / 00335 Sec。 371日期1983年7月22日 102(e)日期1983年7月22日PCT申请日1982年11月25日PCT公布。 公开号WO83 / 01983 日期:1983年6月9日。特别适用于泵送湿混合物和浆料的泵系统通过动力缸(10A,10B)内的动力活塞(12A,12B)的控制运动实现基本上没有脉动或波动的泵送物质的输出 )。 动力活塞(12A,12B)通过活塞杆(14A,14B)连接到抽吸活塞(16A,16B),泵活塞(16A,16B)吸入通过阀(20A,20B)泵入的材料,并通过阀(22A,22B)排出,进入 输送管(26)。 闭环(32)连接动力缸(10A,10B)的环形室(13A,13B),连续运转的泵(P2)供给闭环(32)。 动力活塞(12A,12B)在其吸入冲程上比在输送冲程上移动得更快,由此一个或另外两个活塞(12A,12B)总是向前移动。 通过在每个动力油缸(10A,10B)上设置感应阀(PVA1,PVA2,PVB1,PVB2)来实现对泵送材料的平稳输送的控制,这些阀被布置成在动力活塞的不同位置 12A,12B)。 检测阀将信号传递到止回阀(CV1,CV2),以响应感测阀的致动而关闭闭环(32),从而控制气缸中的动力活塞的运动。

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