QUICK-ACTING HIGH-TEMPERATURE THROTTLE DEVICE Russian patent published in 2007 - IPC F16K1/12 F16K31/54 F16K49/00 

FIELD: valving.

SUBSTANCE: device comprises housing with axial inlet, flowing section, axial outlet, and passages for supplying and discharging cooling air. The housing receives central chamber provided with prechamber and mounted on the shelves. The central chamber receive sleeve valve and mechanism for moving the sleeve valve. The mechanism is made of a rack and pinion. The rack is secured to the rod of the sleeve valve and is shifted with respect to the axis of the pinion by the value of the radius of the dividing circumference. The pinion is rigidly connected with the shaft of the driving mechanism. The shaft of the driving mechanism is set in the detachable support. The support is connected with the inner side of the central chamber. The load-bearing pins and temporary bushing perpendicular to the pins are mounted in the plane of the pinion axis. The housing inside the flowing part is provided with the outer shield. The central chamber has inner shield. The shaft of the driving mechanism is set in the bushing-bearings in the detachable support. The support is flexibly connected with the inner surface of the central chamber through the flat springs. The housing receives additional pins. The pins are locked inside the housing and are movably connected with the central chamber. The mechanism for moving the rack-pinion is provided with the adjusting plate. A part of the outer shield in the flowing section can reciprocate. The inner shield in the central chamber is multi-layered.

EFFECT: enhanced reliability and expanded functional capabilities.

3 cl, 9 dwg