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    • 3. 发明申请
    • VALVE DEVICE
    • 阀装置
    • WO00023180A1
    • 2000-04-27
    • PCT/EP1999/007936
    • 1999-10-19
    • F16K1/00B01F3/10B01F5/08F16K11/16F16K31/126F16K31/163G05D16/06G05D16/08B01F15/02B05C11/10B29B7/24B29B7/74B29B7/76B29B7/80G05D7/00
    • G05D16/0602F16K11/168F16K31/163G05D16/0647G05D16/08Y10S137/906Y10T137/87756
    • The invention relates to a valve device (14) for low-viscosity to high-viscosity fluids, especially for fluid plastic material constituents (12) of single or multiple constituent plastic mixtures. The inventive valve device comprises a valve housing (18) with a fluid inflow (20, 30) and a dosing valve (15) which has a dosing nozzle (22) that can be optionally closed or opened by a closing element (23). Said valve device also comprises a pressure control device (40, 44) which influences the fluid in the fluid inflow. In order to maintain a constant fluid pressure in the housing which is not influenced by the position of the closing element, the invention provides that the pressure control device is essentially comprised of a control membrane (40) which can be pneumatically prestressed and which acts upon the closing element (23). The invention enables a particularly easy isobaric control or regulation of the fluid inflow since the fluid pressure on one side of the membrane and acting upon the same is in equilibrium with the air pressure prevailing on the other side, and since the air pressure and thus the control membrane remain practically unchanged due to the compressibility of the gas when the closing element is displaced.
    • 本发明的阀装置(14),用于低和高粘度液体,尤其是对于具有具有液体入口(20,30)的阀壳体(18)和一个计量阀(15)的单组分或多组分的塑料混合物的液体塑料部件(12),所述的一个 具有闭合元件(23)是选择性地可锁住或释放分配喷嘴(22),和作用于液体供给压力控制装置(40,44)的液体的力。 为了保持独立于壳体中的恒定的流体压力,提出了本发明,所述压力控制装置的关闭元件(23)上基本上一作用在封闭元件的位置的,气动预紧控制膜(40)。 由于对带有压力通行中平衡的另一侧的空气压力和空气压力这些作用的流体压力在膜的一侧几乎没有由于在封闭元件的位移改变为气体的可压缩性,从而控制膜的,与本发明中,同量异序 控制水合特别容易。
    • 9. 发明公开
    • VALVE
    • EP1809934A1
    • 2007-07-25
    • EP05803175.8
    • 2005-11-08
    • KABUSHIKI KAISHA TOYOTA JIDOSHOKKINishina Industrial Co., Ltd.
    • MATSUZAKI, Takeharu, c/o K.K. TOYOTA JIDOSHOKKINAKAJIMA, Shigeto, c/o NISHINA INDUSTRIAL CO. LTD.
    • F16K17/04F16K15/02
    • F16K17/04F16K15/026Y10T137/2642Y10T137/2663Y10T137/87499Y10T137/87756
    • A valve seat 20 is arranged between the supply circuit 8 and a downstream circuit 18. A valve body 21 blocks a fluid flow between the supply circuit 8 and the downstream circuit 18 by contacting the valve seat 20. The valve body 21 connects the supply circuit 8 to the downstream circuit 18 for supplying the fluid to the downstream circuit 18 by separating from the valve seat 20. A through hole 24 extends through the valve body 21 and thus defines a part of the supply circuit 8. The through hole 24 is defined in such a manner that the fluid that has flowed from the through hole 24 proceeds between the valve seat 20 and the valve body 21 and is thus supplied to the downstream circuit 18. The valve body 21 is formed in such a manner that a pressure receiving area at an upstream side of the through hole 24 is smaller than a pressure receiving area at a downstream side of the through hole 24. This reduces a pressure loss caused by the fluid passing through a backflow prevention structure that permits forward fluid flow from the supply circuit 8 to the downstream circuit 18 but prohibits backflow of the fluid.
    • 阀座20​​布置在供应回路8和下游回路18之间。阀体21通过接触阀座20而阻断供应回路8和下游回路18之间的流体流动。阀体21将供应回路 8连接到下游回路18,用于通过与阀座20分离而将流体供应到下游回路18.通孔24延伸穿过阀体21并由此限定供应回路8的一部分。通孔24被限定 使得从通孔24流出的流体在阀座20和阀体21之间行进并因此供应到下游回路18.阀体21形成为使得压力接收 通孔24的上游侧的面积小于通孔24下游侧的受压面积。这减小了由流体通过防回流结构th引起的压力损失 在允许从供应回路8向前流体流动到下游回路18但阻止流体回流。