A sampling device for hydrological water resources riverbed material

Abstract

This invention belongs to the field of riverbed sampling technology, specifically referring to a sampling device for riverbed quality in hydrology and water resources. It includes a hollow sampling component, an automatic drainage and squeezing component, a sand-water separation component, an automatic window opening component, and a bottom contact component. The automatic drainage and squeezing component is slidably disposed within the hollow sampling component, and the sand-water separation component is disposed on the side of the hollow sampling component. This invention triggers the automatic window opening component through the bottom contact component, utilizing the riverbed reaction force to slide the closed cap upwards to expose the sampling port. After sampling, a tension spring drives the cap to automatically reset and seal, completely preventing impurities from entering during the upstream and downstream processes and ensuring sample purity. The automatic drainage and squeezing component utilizes the buoyancy of the hollow float to allow the piston to move upwards during sampling, creating sampling space. After sampling, the squeezing spring drives the piston downwards, automatically squeezing the sediment sample through drainage micro-holes to form a complete, cylindrical, undisturbed sample that can be removed as a whole.

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