Patent ID: 7163186
Filing Date: 2007-01-16
Classification: F16K

Abstract:
1. A quick-closing valve for the interruption of a fluid flow, comprising: a valve housing including a fluid inlet port and a fluid outlet port for incorporation into a fluid line; a valve seat and a closing element positioned between the fluid inlet port and the fluid outlet port; wherein the closing element comprises a valve stem extending our of, and being sealed with respect to, the valve housing, the valve stem being held outside of the valve housing by a locking element in an open position enabling fluid to flow between the closing element and the valve seat, with the closing element being constructed and arranged such that a pressure acting upon the closing element on the fluid inlet side exceeds a fluid pressure acting upon the closing element on the fluid outlet side, such that the quick-closing valve is moved to a closed position directly by the higher inlet-side pressure upon release of the valve stem by the locking element; the locking element being a locking pin which indirectly interacts with a free front face of the valve stem via a lever arrangement provided between the locking pin and the valve stem for force de-coupling, the locking pin being actuatable by a solenoid attached to the valve housing on the basis of an electrical signal generated upon detection of an event; the lever arrangement comprising an angle lever having a lever arm pivotable around a fulcrum attached to the valve housing, the lever arm resting, at a fulcrum side, on the free front face of the valve stem and engageable with, at a free end, the moveable locking pin, the lever arm constructed and arranged to pivot away from the free front face of the valve stem when disengaged from the locking pin to allow the valve stem to move to the closed position.