FIELD: manufacturing technology.
SUBSTANCE: invention relates to the field of hydraulics. Hydraulic valve with control device for control piston. At that, hydraulic valve includes housing, control piston with area AK cross section, wherein control piston can move in housing in axial direction, and due to movement of control piston working fluid flow rate can be set. Valve includes one drive device for movement of control piston. Drive device has a rigidly bent metal plate. Outer area of metal plate is fixed in housing. Piezoelectric actuator, which can deflect central area of metal plate and pressure chamber filled during operation with working fluid. Pressure chamber is confined by case, metal plate and control piston. Metal plate seals the pressure chamber, and the pressure chamber loads the control piston. Area AP of metal plate within pressure chamber is greater than area AK of control piston cross-section.
EFFECT: creation of hydraulic valve, which is suitable for use in medium or high pressure area, and also can react quickly.
16 cl, 10 dwg
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