公开(公告)号：US06241212B1

公开(公告)日：2001-06-05

申请号：US09294431

申请日：1999-04-20

申请人： Tarou Takahashi ,  Genroku Sugiyama ,  Tsukasa Toyooka

发明人： Tarou Takahashi ,  Genroku Sugiyama ,  Tsukasa Toyooka

IPC分类号： F16K1720

CPC分类号： F15B20/005 ,  F15B13/01 ,  Y10T137/7727

摘要： A hose rupture control valve unit includes a housing provided with two input/output ports. One input/output port is directly attached to a bottom port of a hydraulic cylinder, and the other input/output port is connected to one of actuator ports of a control valve via an actuator line. Within the housing, there are provided a poppet valve body serving as a main valve, a spool valve body serving as a pilot valve which is operated with a pilot pressure supplied as an external signal from a manual pilot valve, thereby operating the poppet valve body, and a small spool having the function of an overload relief valve. The above construction reduces the number of components arranged in a flow passage through which a hydraulic fluid passes at a large flow rate, and hence a pressure loss. A further reduction in overall size and production cost of the valve unit is achieved.

摘要翻译： 软管断裂控制阀单元包括具有两个输入/输出端口的壳体。 一个输入/输出端口直接连接到液压缸的底部端口，另一个输入/输出端口经由致动器线路连接到控制阀的致动器端口中的一个。 在壳体内设置有作为主阀的提升阀体，作为先导阀的滑阀体，其以从手动先导阀作为外部信号提供的先导压力动作，从而操作提升阀体 以及具有过载溢流阀功能的小型阀芯。 上述结构减少了设置在液压流体以大流量通过的流动通道中的部件的数量，并因此减小了压力损失。 实现阀单元的总体尺寸和生产成本的进一步减小。

公开(公告)号：US06189562B1

公开(公告)日：2001-02-20

申请号：US09486683

申请日：2000-05-19

申请人： Bernt Lorentz

发明人： Bernt Lorentz

IPC分类号： F16K1720

CPC分类号： F16K17/04 ,  F04B2205/172 ,  F16K17/044 ,  Y10T137/7738 ,  Y10T137/7741

摘要： For operating pumps above the respective system resistance for all volume flows, for a spring-loaded, directly acting overflow valve for limiting the pressure in a system in which a liquid is lifted by a positive-displacement pump and flows through the system with varying rates of flow, the valve chamber (1) and the valve body (22) with the valve head (14) placed therein are constituted in such a way that the valve head, after lifting off from the valve seat (3), has a second active diameter which is bigger than the first active diameter, whereby the valve head (11) simultaneously releases, with increasing stroke of the valve body (22), an enlarging flowing-through cross section, whereby the valve body (22) is constituted in one part as a valve piston (11) sliding in the valve chamber (1) with a third active diameter which is bigger than the second active diameter so that the liquid flowing through the valve chamber (1), the valve being opened, produces a pressure difference which acts onto the valve piston (11) against the action of the first spring (21).

摘要翻译： 对于用于所有体积流量的相应系统阻力的操作泵，对于弹簧加载的直接作用溢流阀，用于限制液体由正排量泵提升并以不同速率流过系统的系统中的压力 阀门腔（1）和阀体（22）与阀头（14）放置在其中的方式构成为使得阀头在从阀座（3）取下后具有第二 有效直径大于第一有效直径，由此阀头（11）随着阀体（22）的行程增加而同时释放扩大的流动横截面，由此阀体（22）构成 作为阀活塞（11）的一部分在阀室（1）中滑动，第三有效直径大于第二有效直径，使得流过阀室（1）的液体（阀被打开）产生一个 压力差作用 克服第一弹簧（21）的作用而在阀活塞（11）上。