| 摘要 |
In packaging certain dry, free-flowing solid materials, the packaging operation involves delivering the solids from a classifier screen to a storage hopper through an inclined conduit. Within the conduit the particles tend to segregate into distinct layers, such that each layer contains solids of a different size. In this situation it is difficult to obtain a representative sample of the product being packaged, for quality control purposes. The present invention solves the problem with a sample receiving and collection conduit inside the hopper, which is operated by an oscillator means and timer mechanism. The timed oscillation of the receiving and collection conduit permits a periodic collection of the entire solids stream as it flows from the inclined conduit into the hopper.
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