Multi-stage sampler for flowing material

Details Multi-stage sampler for flowing material Multi-stage sampler for flowing material

1976-09-27

1977-08-30

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 114

Patent

active

040446174

ABSTRACT:
A multi-stage sampler for providing a representative sample of a batch of flowing material such as wet or dry sand, mineral concentrates, grain, sicky material, particulate matter, and the like. The sample includes a rotating sampler disc onto which the batch is delivered. This sampler disc has holes in it near its perimeter. A stationary guide means is positioned above the rotating disc to direct the material radially outward over the holes and into a discharge chute. A sample of the batch falls through the holes and is received within a second stationary guide means located above an annular, rotating conveyor disc. The sample is conveyed across the conveyor disc along a predetermined path defined by its guide means. The guide means has a deflecting member that deflects the sample off the annular conveyor disc through its central hole. A second sampler disc substantially identical to the first one receives the sample and, in a manner substantially identical to the first sampling disc, samples the sample. This procedure is repeated until a small, representative sample is produced. All of the discs rotate about the same vertical axis. The material passing through the sampler is being continuously tumbled and mixed to help create a truly representative sample. A reciprocating scraper is positioned above the top sampler disc to clean its surface between batches and an inclined chute is provided below each sampler disc to direct the flow discharging from the sampler disc into the discharge chute.

REFERENCES:
patent: 649288 (1900-05-01), Fanders
patent: 3250131 (1966-05-01), Jordison

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