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    • 2. 发明申请
    • FLOW RATE CONTROL VALVE AND ITS CONTROL METHOD
    • 流量控制阀及其控制方法
    • WO1994001813A1
    • 1994-01-20
    • PCT/JP1993000948
    • 1993-07-09
    • SUMITOMO ELECTRIC INDUSTRIES, LTD.TAKATA, KojiHASHIDA, Koichi
    • SUMITOMO ELECTRIC INDUSTRIES, LTD.
    • G05D07/01
    • B60T8/3265B60T8/3665B60T8/367B60T8/4225B60T8/441B60T15/028G05D7/0635Y10T137/0357Y10T137/7759Y10T137/7792
    • The flow rate of a control valve can be controlled continuously while preventing the working liquid from leaking when the control valve is open. A piston (12) is accommodated slidably in the axial direction in a case (11) which is provided with a first port (13) and a second port (16). The piston (12) is biased by an electromagnet (20). Between the first port (13) and a first liquid chamber (A), there is provided a first switch valve (14B) having a valve seat (14C) which is open to the first liquid chamber (A) and faces one end of the piston (12), and a valve element (14B) which is interlocked with the axial displacement of the piston (12), seated on and separated from the valve seat, operated for communication of the first port (13) with the first liquid chamber (A) and for isolation therebetween. An orifice (15) is provided in the liquid path so as to allow the first liquid chamber (A) to communicate with the second liquid chamber (B).
    • 可以连续控制控制阀的流量,同时防止工作液体在控制阀打开时泄漏。 活塞(12)沿轴向可滑动地容纳在设置有第一端口(13)和第二端口(16)的壳体(11)中。 活塞(12)由电磁体(20)偏置。 在第一端口(13)和第一液体室(A)之间设置有第一开关阀(14B),该第一开关阀(14B)具有对第一液体室(A)开口的阀座(14C) 活塞(12)和阀元件(14B),其与位于阀座上并与阀座分离的活塞(12)的轴向位移联锁,用于使第一端口(13)与第一液体室 (A)并隔开。 在液体通道中设置一个孔口(15),以使第一液体室(A)与第二液体室(B)连通。