公开(公告)号：US6062260A

公开(公告)日：2000-05-16

申请号：US415928

申请日：1999-10-12

申请人： Shinichi Yoshimura ,  Robert William Dickman ,  Alexander Montgomery Mlsna

发明人： Shinichi Yoshimura ,  Robert William Dickman ,  Alexander Montgomery Mlsna

IPC分类号： F15B13/00 ,  F15B13/04 ,  F15B13/043 ,  F15B13/08

CPC分类号： F15B13/0832 ,  F15B13/0405 ,  F15B13/0431 ,  F15B13/0857 ,  F15B13/0871 ,  Y10T137/87193 ,  Y10T137/87209 ,  Y10T137/87225

摘要： A dual piston pilot valve includes a housing forming first and second cylinders. A first spool is moveable in the first cylinder for engaging the a piston to effect movement of the first piston and a second spool is moveable in the second cylinder for engaging a second piston to effect movement of the second piston. The valve further includes a single pressurized fluid supply port communicating with both the first and second cylinders, a first output port communicating with the first cylinder, a second output port communicating with the second cylinder, a single exhaust port communicating with both the first and second cylinders, and a diaphragm engaging the housing and both the first and second pistons. The diaphragm is positioned between both the first and second spools and both the first and second seal regions of the first and second pistons to effect a seal between the single exhaust port and the first and second spools. Movement of the first piston is controlled independently from the movement of the second piston, and vice versa.

摘要翻译： 双活塞先导阀包括形成第一和第二气缸的壳体。 第一阀芯可在第一气缸中移动，用于接合活塞以实现第一活塞的运动，并且第二阀芯可在第二气缸中移动，用于接合第二活塞以实现第二活塞的运动。 所述阀还包括与所述第一和第二气缸两者连通的单个加压流体供应口，与所述第一气缸连通的第一输出端口，与所述第二气缸连通的第二输出端口，与所述第一和第二气缸两端连通的单个排气口 气缸，以及与壳体接合的隔膜以及第一和第二活塞两者。 隔膜位于第一和第二卷轴两者之间以及第一和第二活塞的第一和第二密封区域之间，以实现单个排气口与第一和第二卷轴之间的密封。 第一活塞的移动独立于第二活塞的移动而被控制，反之亦然。