SERVO VALVE WITH JET CONTROL Russian patent published in 2013 - IPC F15B9/06 F15B3/00 

FIELD: machine building.

SUBSTANCE: servo valve can be used in high-precision control systems of working actuating mechanisms of movable transport vehicles and airborne vehicles. Servo valve uses a jet amplification stage with one pressure nozzle and two receiving nozzles and two receiving channels, which are connected through hydraulic lines to end cavities of the spool valve. The jet amplification stage is made in the form of three flat discs, in which there are slots for arrangement of a deflector shutter, which are centred by means of pins between each other, in the middle disc there made in the form of through slots is a pressure nozzle with a chamber and two receiving nozzles with chambers; chambers of the middle disc are connected through the holes made in lower disc to the corresponding end cavities of the spool valve through the channels in the amplifier housing. A pack of discs is rigidly pressed to the housing by means of fasteners.

EFFECT: improving manufacturability, simplifying the jet stage design and reducing the jet stage dimensions.

3 dwg