DEVICE FOR TAKING SAMPLES OF SILTY DEPOSITS Russian patent published in 2002 - IPC

FIELD: devices for sampling of silty deposits of fluid and viscous-flow consistency; applicable in sample taking from ice surface in winter at air subzero temperatures. SUBSTANCE: device for taking samples of silty deposits has freezing-up pipe filled with antifreezing fluid with internal coaxial circulating feed pipe, separating diaphragm and round trip mechanism. Device is provided with radiator in the form of two mixing flat cylinders interconnected by several vertical circulating pipes and installed above diaphragm. Freezing-on pipe is made in the form of pipe string. During operation, accelerated freezing-on of silt sample is ensured due to design of radiator with large area and more intensive circulation of freezing fluid. Sample is frozen-on over entire thickness of sampled deposit at preset depth of sampling as preset depth of sampling is ensured by required extension of freezing pipe by additional separate lengths of string. EFFECT: higher efficiency of device operation. 2 dwg