Method in the operation of mixing or processing plants, in...

G - Physics – 01 – N

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270/52.7

G01N 1/20 (2006.01)

Patent

CA 1331765

A method in the operation of mixing or processing plants, where samples are taken from various material supplies, and sampling means for use therewith. A B S T R A C T: In certain mixing or processing plants a successive dosing out of materials from various silo outlets (8) is effected to different places of a belt- or binweigher (2), and material samples are taken out at the respective outlets. For an automatic sampling it will be very expensive to arrange for sampling units at each outlet, but according to the invention use is made of a single sampler (44), which stretches all over the width of the receiving weigher and is movable longitudinally thereof, such that it can be moved into operative connection with any one of the outlets. The sampler (44) is designed so as to be able transfer, after each sampling, the actual sample to a pneumatic conveyor system (20, 22) operating to bring the sample to a central analysing station. The sampler is made as a worm conveyor in a slotted tube (44), which can be turned into an inactive position, in which the sampler can pass through a material flow without collecting material therefrom, and in which it is emptied for residues of previous samples.

611599

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