SELF-LOCKING VALVE Russian patent published in 2011 - IPC B65D47/20 

FIELD: transport, distribution of fluids.

SUBSTANCE: self-locking valve intended for dispensing fluid comprises valve membrane, disk with retainers, thrust ring and lateral guide. Valve membrane features shape of plate spring with dispensing opening and flat round edge running along outer perimetre. Note here that pressure difference makes membrane displace between closing position, dispensing position and back suction position. Disk with retainers arranged across axis of symmetry has surface of fit whereto membrane fits inclosing position and back suction position. Valve has thrust ring whereto adjoins round edge of valve membrane in dispensing position and closing position, while thrust ring ups dispensing opening into position of back suction. Valve has lateral guide that runs parallel with valve axis of symmetry to resist action of at least part of valve membrane. Note here that lateral edge may displace axially along said lateral guide to change position into back feed position. Valve membrane features shape cambered toward disk with retainers in closing position while in dispensing position it camber comes into reverse position relative to closing position.

EFFECT: new design of self-locking valve, good sealing properties.

12 cl, 11 dwg