Gas-tight shut-off valve for a material charging or...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 49/00 (2006.01) F16K 1/20 (2006.01)

Patent

CA 2410276

A gas-tight shut-off valve (14) for a material charging or discharging lock (10) comprises a valve closing element (26) that is movable relative to a valve seat (22), between a first position, in which the valve closing element (26) and the annular valve seat (22) can be axially pressed together, and a second position, in which the valve closing element (26) is located laterally of the discharge opening (24) in the valve seat (22). A soft sealing means (28) is associated either with the annular valve seat (22) or with the valve closing element (26). The valve (14) further comprises a heat protecting element (30), which is movable between a first position, in which it covers the soft sealing means (28) when the valve closing element (26) is in its second position, and a second position, in which it uncovers the soft sealing means (28).

Selon l'invention, une soupape d'arrêt étanche aux gaz (14) équipant un mécanisme de verrouillage de remplissage ou de vidange de matières (10) comprend un élément de fermeture de soupape (26) pouvant être déplacé relativement à un siège de soupape (22), entre une première position dans laquelle l'élément de fermeture de soupape (26) et le siège de soupape annulaire (22) peuvent être pressés axialement ensemble, et une seconde position dans laquelle l'élément de fermeture de soupape (26) est disposé latéralement à l'ouverture de vidange (24) dans le siège de soupape (22). Un dispositif d'étanchéité mou (28) est associé soit au siège de soupape annulaire (22), soit à l'élément de fermeture de soupape (26). La soupape (14) comprend en outre un élément anticalorique (30) pouvant être déplacé entre une première position dans laquelle il couvre le dispositif d'étanchéité mou (28) lorsque l'élément de fermeture de soupape (26) est dans sa seconde position, et une seconde position dans laquelle il découvre le dispositif d'étanchéité mou (28).

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