MOTOR VALVE WITH ROTARY PLUG Russian patent published in 2009 - IPC F16K31/04 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to field of pipeline valves, particularly to structures of quick-acting motor valves with axisymmetric seats and rotary plugs, and is provided for close control of flows of arbitrary flowing fluids on the basis of liquids and gases, locking and unlocking of vacuum pipelines. Motor valve with rotary plug contains casing 1 with inlet 2 and outlet 3 branches, axisymmetric seat 4, rotary plug 5, rotary drive on the basis of piezoelectric motor 7. Seat 4 is rigidly fixed inside the casing 1. Rotary plug 5 is put into seat 4 and allows guide bar 6. Motor 7 allows annular piezoelectric oscillator 8 radially directed vertical acoustic waves. Oscillator 8 is rigidly fixed with casing 1 of valve and outfitted by facilities for connection to pulsed current source and control system. Flexible annulus 9 is acoustic hermetically joined to piezoelectric oscillator 8. Annulus 9 is outfitted by flexible clack tappet 10. Rotor 11 is located with steady clearance relative to piezoelectric oscillator. Rotor 11 is introduced into frictional contact with flexible clack tappet 10. Rotor 11 is interlocked with guide bar 6 of rotary plug 5.

EFFECT: rising of valve performance and rising of precision of angular positioning of plug relative to seat.

7 cl, 2 dwg