| 摘要 |
<p>PURPOSE: To obtain high sealing ability for a long term by providing a lifting device, which comprises a seating plate and an adjusting device, for keeping a valve open to a valve plate which is mobile to- and fro- between a valve seat and a valve guard. CONSTITUTION: A plate valve comprises a valve seat 1 which has passage channels 2 for the medium delivered by a compressor, and a guard 3 having passage channels 4 and associated with the valve seat 1. A seating plate 5 having valve ports 6 and connection apertures 7 lies against the valve seat 1. A valve plate 8 having passage openings 9 is disposed between the valve guard 3 and the seating plate 5. The seating plate 5 and a control device comprising a lifting gripper 10 construct a lifting device for lifting the valve plate 8, wherein the lifting gripper 10 is movable against the force of a return spring 13 by means of gripping fingers 12, and the seating plate 5 is biased by a spring 15 toward the valve seat 1.</p> |
