JOINT OF SHUTTER WITH COMBUSTIBLE GAS FEED VALVE SEAT Russian patent published in 2013 - IPC F16K5/04 

FIELD: machine building.

SUBSTANCE: proposed joint between shutter and valve seat consists of seat with vertical ledges arranged in symmetric about seat feed bore. Shutter aligned pins are fitted in aligned bores of ledges with no interference, one being provided with rotary drive pulley arranged with end clearance relative to seat ledge. Shutter is fitted with clearance relative to end faces of ledges and annular clearance in seat feed bore zone. Seat ledges has symmetric identical vertical cutouts. Flats are made on shutter pins. Inner surface of seat ledge through cylindrical bores is lined by insert of carbon materials. Said inserts are pinned to seat ledges. Pin arranged in seat ledges and inserts is made of seat material while that in insert is made of insert material. Pins are fitted in seat and inserts ledges with no interference. Cylindrical ledges aligned with pins are made on shutter in area of pins. Diameter of cylindrical ledges and end clearances are made in compliance with definite relationships.

EFFECT: higher reliability owing to reduced to swivel moment.

2 dwg