Patent ID: 8205513

Claim:
A closure device, in particular for a sample-metering unit for metering sample material consisting of free-flowing bulk material, comprising a filling-chamber housing or at least one housing part which delimits a hollow cross-section of a filling chamber, and comprising at least one shut-off valve which has a through-opening and can be displaced through a guidance gap, in a direction transverse to a longitudinal direction of the filling chamber, between an open position and a closed position, the shut-off valve in the open position forming an aperture of a filling-chamber cross-section by way of its through-opening, and the shut-off valve in the closed position closing the filling-chamber cross-section, a cleaning chamber being formed, the height of which is greater than the height of the guidance gap, and which is associated in positional terms with the shut-off valve such that the periphery of the through-opening in the closed position is located in the cleaning chamber, characterized in that a plurality of shut-off valves are spaced apart along the filling chamber, and in that a respective cleaning chamber is associated with each of the plurality of shut-off valves, and characterized in that all the cleaning chambers are connected to one another.