A control valve assembly for indirect pneumatic control and method for controlling a working fluid pressure, which enable precise, sensitive and speed-variable controlling. The assembly includes two valve units, a working fluid inlet, and a control fluid inlet. A working fluid channel connects the working fluid inlet through the two valve units to an outlet. A valve piston arranged within a valve cylinder of the valve units is movable between open and closed positions. A spring element biases the valve piston toward the closed position, and a control pressure chamber applies a control pressure counteracting the spring element's bias. When a control pressure is applied in the first chamber, the first valve piston is moved to the open position. Two opposite valve surfaces form a valve opening opened at varying widths when the valve piston is moved in the valve cylinder because of a changing control pressure, and the working pressure can be finely adjusted corresponding to the valve opening width depending on the control pressure.
STEUERVENTILANORDNUNG ZUR INDIREKTEN PNEUMATISCHEN STEUERUNG UND VERFAHREN ZUM STEUERN EINES ARBEITSFLUIDDRUCKS
CONTROL VALVE ASSEMBLY FOR AN INDIRECT PNEUMATIC CONTROL, AND METHOD FOR CONTROLLING A WORKING FLUID PRESSURE
ENSEMBLE DE SOUPAPE DE COMMANDE PERMETTANT UNE COMMANDE PNEUMATIQUE INDIRECTE, ET PROCÉDÉ DE RÉGULATION DE LA PRESSION D'UN FLUIDE DE TRAVAIL
2023-06-07
Patent
Elektronische Ressource
Deutsch
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