06-12-2018 дата публикации
Номер: US20180348801A1
Принадлежит:
A proportional valve is provided having a pilot control valve that can be controlled by means of a control signal and having a booster valve that can be actuated by means of the pilot control valve. The proportional valve has a compressed-air connection for connecting a compressed-air supply, a working connection, and an air-removal connection. The booster valve has three valve elements, which are arranged one after the other and can each be moved in an axial direction against a spring force. 112321654. A proportional valve () with a pilot valve () that can be activated by a control signal and a booster valve () that can be actuated by means of the pilot valve () , wherein the proportional valve () has a compressed-air port () for connection of a compressed-air supply , a working port () and a vent port () ,{'b': 3', '8', '9', '10, 'wherein the booster valve () has three valve elements (, , ) connected in series and respectively movable in an axial direction against a spring force, namely'}{'b': 8', '2, 'a first valve element () actuated by the pilot valve (),'}{'b': 9', '2, 'a second valve element (), which is actuated by the first valve element (), and'}{'b': 10', '9, 'a third valve element (), which is actuated by the second valve element (),'}{'b': 1', '8', '9', '10', '3', '26', '8', '9', '27', '10', '16', '2', '8', '9', '10', '5', '5, 'wherein, in a basic position of the proportional valve (), the first, the second and the third valve elements (, , ) are spaced apart from one another in pairs and, within the booster valve (), a first sealing seat () acting between the first valve element () and the second valve element () and a second sealing seat () acting between the third valve element () and the housing () are formed and disposed in such a way that during variation of the control signal that activates the pilot valve () and of the resulting cascade-like positioning of the axial positions of the first, second and third valve elements (, , ), various switched ...
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