Core sampler systems

Details Core sampler systems Core sampler systems

G - Physics

01

N

73/102

G01N 1/08 (2006.01) G01N 1/10 (2006.01) G01N 1/14 (2006.01) G01N 33/00 (2006.01)

Patent

CA 1324000

A B S T R A C T : It has been found long ago that taking samples from an impure granular material by means of a simple tubular sampling spear does not provide for any representative result, and a substantial improvement has already been obtained by embodying the spear with an inner suction pipe and an outer blower pipe , said pipes being open towards one another at the spear end through an annular slot for obtaining that the material which is let in through the spear tip is conveyed away by the suction air to a material separator without showing any associated disturbing "vacuum cleaner effect" outside the spear mouth. With the invention, a small hole is provided in the wall of the hose connection between the pressure side of the blower and the spear, through which hole a weak air flow will be blown out, whereby a correspondingly weak air intake will occur through the open end of the spear, and hereby a considerable improvement of the sampling accuracy is obtained. It may even be important to arrange for a similar, but smaller hole in the suction connection to the spear in order to reduce the vacuum at this place.

578439

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