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    • 7. 发明公开
    • RECIPROCATING PUMP
    • KOLBENPUMPE
    • EP3012455A4
    • 2017-05-03
    • EP14813040
    • 2014-06-20
    • NIKKISO CO LTD
    • MENJOH YUYAYAMADA SATOAKISUZUKI HIROAKI
    • F04B49/10A61M1/00A61M1/14F04B9/04F04B17/00F04B19/22F04B49/06F04B49/22F04B51/00F04B53/10F04B53/14
    • F04B51/00A61M1/14A61M1/1635F04B9/042F04B17/00F04B19/22F04B49/06F04B49/10F04B49/22F04B53/10F04B53/1047F04B53/1057F04B53/14F04B53/16
    • There is provided a reciprocating pump in which it is possible to monitor pump volumetric efficiency and a flow rate with ease and accuracy. A reciprocating pump includes a pump chamber; a suction port which enables a liquid to be suctioned into the pump chamber; a discharge port which enable a liquid in the pump chamber to be discharged; a plunger 7 which is capable of reciprocating in the pump chamber by a motor M; check valves are disposed between the pump chamber and a flow route on the suction port side and a flow route on the discharge port side, are openable and closable in response to a change in a liquid pressure in the pump chamber, which is produced due to the reciprocating of the plunger 7 a detection device that is able to detect a period of time during which the check valve is in an opened state or in a closed state in a predetermined cycle; and an arithmetic device that performs an arithmetic operation to obtain pump volumetric efficiency or a flow rate based on a comparison between a period of detection time detected by the detection device and a period of time during which the check valve is in the opened state or in the closed state in the predetermined cycle during normal operation.
    • 提供了一种往复泵,其中可以容易且准确地监测泵容积效率和流量。 往复泵包括泵室; 使液体能够被吸入泵室的吸入口; 排出口,其使泵室内的液体排出; 柱塞7,其能够通过马达M在泵室中往复运动; 止回阀设置在泵室与吸入口侧的流动路径和排出口侧的流动路径之间,响应泵室内的液体压力的变化而开启和关闭, 柱塞7往复运动的检测装置能够以预定的周期检测止回阀处于打开状态或关闭状态的时间段; 以及运算装置,其基于由所述检测装置检测出的检测时间与所述单向阀处于打开状态或者所述单向阀处于打开状态的时间之间的时间比较来执行算术运算以获得泵容积效率或流量 在正常操作期间的预定周期中处于关闭状态。
    • 8. 发明公开
    • Dual chamber pumping apparatus
    • Pumpvorrichtung mit Doppelkammern。
    • EP0413069A1
    • 1991-02-20
    • EP89311107.0
    • 1989-10-27
    • IMED CORPORATION
    • Bartholomew, Victor L.Di Palma, Giorgio
    • F04B43/02F04B21/02
    • F04B43/026A61M5/1424F04B53/1057
    • A dual chamber pumping apparatus (10) and method for infusing fluids to a patient includes a disk (12) having a fluid inlet (14) and a fluid outlet (16). Resilient membranes (22, 24) are attached to opposite sides of the disk (12) to establish dual pumping chambers (30, 32), and a network of one-way valves (34, 36) connects the fluid inlet (14) in alternating fluid communication with the pumping chambers (30, 32). A one-way outlet valve (16) connects the pumping chambers (30, 32) alternately in fluid communication with the fluid outlet (16). The one-way valves utilize a hollow, elastomeric tube (44) fixedly disposed in passageways within the disk (12) for covering and uncovering respective ports in response to fluid pressure differentials on the inner and outer surfaces of the walls of the hollow, elastomeric tube (44).
    • 用于向患者输注流体的双室抽吸装置(10)和方法包括具有流体入口(14)和流体出口(16)的盘(12)。 弹性膜(22,24)附接到盘(12)的相对侧,以建立双泵腔(30,32),并且单向阀(34,36)的网络将流体入口(14) 与泵送室(30,32)交替流体连通。 单向出口阀(16)将泵送室(30,32)交替地与流体出口(16)流体连通地连接。 单向阀利用固定地设置在盘(12)内的通道中的中空的弹性管(44),用于响应于中空弹性体的壁的内表面和外表面上的流体压力差而覆盖和露出相应的端口 管(44)。
    • 9. 发明申请
    • Acceleration fuel pump for a combustion engine carburetor
    • US20020176789A1
    • 2002-11-28
    • US10140051
    • 2002-05-07
    • Walbro Japan, Inc.
    • Noriyu Nagata
    • F04B039/10F04B035/04
    • F04B53/1057F02M7/08F04B53/1047F04B53/109Y10T137/2544Y10T137/7843
    • An acceleration fuel pump for use with a combustion engine carburetor is an integral part of the carburetor body and provides an additional flow of fuel to the fuel-and-air mixing passage of the carburetor during acceleration of the engine. The acceleration fuel pump has a plunger which inserts sealably into a cylindrical cavity carried by the body of the carburetor. During acceleration of the engine, the plunger inserts further into the cavity against the resilient force of a spring and toward a resilient check valve member causing the member to deform into a fuel feed state. A fuel passage which extends between the bottom of a fuel chamber of the carburetor and the fuel-and-air mixing passage of the carburetor is intersected by the cavity and the resilient check valve member. The member has a slit at a leading portion of the member which opens when in the fuel feed state and fuel is pushed by the plunger out of a fuel reservoir carried by the cavity and into an outlet leg of the fuel feed passage which supplies fuel to the fuel-and air-mixing passage. During insertion of the plunger, pressure within the fuel reservoir overcomes the pressure within the fuel chamber causing a trailing segment of the member to expand radially outward and engage the internal cylindrical wall of the cavity preventing any reverse flow from the fuel reservoir and into an inlet leg of the fuel passage which extends from the cavity to the fuel chamber. When the engine is through acceleration, the plunger insertion stops and the internal spring forces the plunger retract in an outward direction from the cavity. This retraction causes a pressure reduction within the fuel reservoir causing the slit of the leading segment of the check valve member to close and the peripheral rim of the trailing segment to separate or space from the cylindrical wall of the cavity. Fuel is then drawn from the fuel chamber through the inlet leg of the fuel passage into the fuel reservoir in preparation for the next acceleration of the combustion engine.
    • 10. 发明授权
    • Metering pump
    • 计量泵
    • US5154589A
    • 1992-10-13
    • US610955
    • 1990-11-09
    • Mark A. RuhlWilliam M. HamiltonJohn M. Bronw, Jr.Richard N. Bennett
    • Mark A. RuhlWilliam M. HamiltonJohn M. Bronw, Jr.Richard N. Bennett
    • F04B49/22F04B53/10
    • F04B53/1057F04B49/225Y10T137/6307Y10T137/7559
    • A metering pump wherein the head is provided with internal threads terminating adjacent to internal shoulders at each of the pump cylinder, inlet valve and outlet valve ports. The cylinder, inlet valve and outlet valve each include a flange secured to the shoulder by a collar threadably received in each of the ports. O-rings are provided in a circumferential groove in the body or cylinder of the pump inlet valves and outlet valves downstream of the flange. A piston pump structure includes a bushing mounted to the piston rod between the piston head and a second breakaway stop connected to the piston rod. The piston head includes a plurality of circumferential grooves for receiving respectively a cup seal or an O-ring seal. A suck-back mechanism is provided in a bore in the head and includes a stem having an eccentric cam which interacts with the valve structure to adjust the degree of closure by rotation of the stem.
    • 计量泵,其中头部设置有在每个泵缸,入口阀和出口阀口处与内肩相邻的内螺纹。 气缸,入口阀和出口阀各自包括通过可螺纹地容纳在每个端口中的轴环固定到肩部的凸缘。 O型圈设置在泵入口阀体的主体或气缸中的周向凹槽中,并在法兰下游设有出口阀。 活塞泵结构包括安装到活塞杆之间的衬套,活塞头与活塞杆连接的第二分离止动件。 活塞头包括多个圆周槽,分别用于容纳杯密封件或O形密封圈。 吸头机构设置在头部的孔中,并且包括具有偏心凸轮的杆,所述偏心凸轮与阀结构相互作用以通过杆的旋转来调节闭合度。