| 摘要 |
1. Device for selecting and automatically feeding reservoirs of a temporary storage assembly for pulverulent or granular products, the device comprising a detector associated with each reservoir, the said detector delivering an information signal concerning the level, a plurality of electronic selection circuits comprising a comparator (2), and a circuit (5, 6) capable of delivering a command to feed the selected reservoir, characterized in that the device comprises, for each reservoir, firstly one of the selection circuits comprising an integrator (1) of a stabilised voltage, delivering a sawtooth signal, the said signal delivered each integrator (1) having the same slope and the abovementioned comparator (2) of the said selection circuit comparing the said sawtooth signal and the information signal concerning level, coming from the relevant reservoir, and, secondly, an abovementioned circuit (5, 6) capable of delivering a command to feed the relevant reservoir and consisting of a flip-flop logic device, as well as, for all the reservoirs together, a circuit of the NAND type (7) which has as many inputs as there are reservoirs, and capable of addressing a disabling signal to all the selection circuits when only one comparator (2) has been triggered.
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