Closure apparatus for a drinking container

closure device for one drinking container having an interior space for receiving a drink and for a preferably Upper-side container opening, in which the closure device having at least one receiving chamber (3) is provided, wherein the closure device at least in the having upper area a rigid upper closure element (1), the with a lower axially displaceable covering element (2) has a receiving chamber (3), at least in the lower region of a feed opening (18) through which the contents of the receiving chamber (3) by an axial Shifting operation is releasable into the interior, characterized in that that for the axial displacement of the cover (2) an actuating device (4) provided with an axially displaceable sliding ring (11) is the above Connecting elements (12) with the lower cover member (2) and a Actuating element (5) is connected, wherein the actuating element (5) by an outer pipe stub (7) for manual actuation outward out is