Patent ID: 8181934
Filing Date: 2012-05-22
Classification: F16K,Y10T

Abstract:
1. A shut-off device comprising: a housing which is to be connected to an adjacent conduit in a pressure-tight manner, wherein a tubular passage is defined in the housing, for a medium flowing through the conduit; at least one sealing body which can be displaced by an articulated mechanism by means of an adjusting drive that can be moved vertically in relation to the direction of flow, from an open position into a closed position in which the sealing contour of the at least one sealing body comes into contact with the tubular passage in a radially sealing manner; wherein the articulated mechanism is guided parallel to the direction of displacement of the adjusting drive and comprises a bearing body to which the at least one sealing body is pivotably applied; the bearing body comprises two diametrically opposed ribs and in the wall of the housing or in an insert at least partially lining the housing correspondingly two grooves are formed whereby the ribs form a span extending transversally to the direction of flow of the medium; and the sealing contour of the at least one sealing body expands during substantial axial pressure caused by the flowing medium.