DISPOSITIF ET PROCEDE POUR L'ECHANTILLONNAGE ET LA RECUPERATION DE PARTICULES EMPILEES

The invention relates to a device for sampling and/or recovering stacked solid substances in the particulate state, comprising a sampling probe (1) connected to a specimen collector (2), the device being characterized in that the probe (1) comprises or consists of: at least two coaxial tubes, namely an inner tube (3) and an outer tube (4), which are sealingly connected to their upper part (20) and have lower parts (13, 14) capable of penetrating the stack of solid substances; an annular space (5) between the two tubes (3, 4), a source of pressurized fluid (6) being connected to said annular space; a connection (7), connecting the upper end of the inner tube (3) to the specimen collector (2) in order to convey the sampled particles thereto, in particular thanks to the action of the pressurized fluid (6); and a helical ramp (19) comprising at least one fixed turn portion (8) wound around the outer lower part of the inner tube (3) and the width of the turn (9) of which is approximately equal to the difference between the internal radius of the outer tube (4) and the external radius of the inner tube (3), and it also relates to a method and to the use of the device.