公开(公告)号：US20040084648A1

公开(公告)日：2004-05-06

申请号：US10690109

申请日：2003-10-20

申请人： Applied Precision, LLC

发明人： Steven C. Quarre

IPC分类号： F16K031/02

CPC分类号： F16K31/007

摘要： A precision controlled fast valve includes a diaphragm, a piezo actuator, and a plunger. The plunger is adapted to engage the diaphragm to create a seal which closes the valve. The piezo actuator is attached to the plunger and adapted to receive control signals which define the distance and speed of travel of the plunger. A control signal is received by the piezo actuator which causes the plunger to rapidly travel to a first position which is proximate to the diaphragm but does not create a seal. A second control signal is received by the piezo actuator which causes the plunger to pinch the diaphragm and creates a seal (due to the blocked force generated by the piezo). Creating the seal without excessive forces reduces the wear on the seal, allowing longer intervals between maintenance.

摘要翻译： 精密控制的快速阀包括隔膜，压电致动器和柱塞。 柱塞适于接合隔膜以产生封闭阀的密封件。 压电致动器附接到柱塞并且适于接收限定柱塞的行进距离和速度的控制信号。 控制信号由压电致动器接收，其使柱塞快速行进到靠近隔膜的第一位置，但不产生密封。 第二控制信号由压电致动器接收，这导致柱塞夹紧隔膜并产生密封（由于压电产生的阻塞力）。 在没有过大力量的情况下创建密封可减少密封件的磨损，从而在维护之间延长间隔时间。