Screening and alignment of nuclear fuel pellets

摘要

A conveyor device has a sequence of two vibrating screens vertically separated (d) from each other and supplying an alignment bowl, to eliminate chips and residue from nuclear fuel pellets stored in bulk in a boat and to align them in order to fill fuel rods. Due to these two screens, pellets are set aside and turned over, and chips are efficiently separated in a pot, without any congestion of the system.

主权项

1. A conveyor device, intended to align cylindrical objects possibly containing chips, such as nuclear fuel pellets, the device comprising at least a first vibrating screen and a second vibrating screen each enabling displacement of the objects along a first direction by vibration, the first screen and the second screen each being composed of parallel bars at regular intervals, for which the longitudinal axis forms the first direction, the first screen and the second screen being positioned one after the other in the direction of displacement and being separated from each other along a second vertical direction, such that the cylindrical objects are forced to spin around when dropping on the second screen located under the first screen, device in which each screen is coupled to vibrating means independent from each other, such that the displacement speed on the second screen is greater than the displacement speed on the first screen.