Water sampler and water sampling method used for sampling inland water

Abstract

The invention relates to a water sampler and a water sampling method used for sampling inland water. The water sampling method includes placing the water sampler into an appointed water sampling point, reading depth information via scales on a wire drawing sheath, pulling a metal drawing wire to open a sealing cover in the preset water sampling depth and starting sampling water; loosening the metal drawing wire, repressing the sealing cover onto a water sampling container under elasticity action of the spring; uplifting the wire drawing sheath to recover the water sampler, taking out of the water sampling container and completing the integral water sampling process. Accordingly, the water sampler has the advantages that the water sampling container can be directly replaced after water sampling each time, cross contamination of water samples during many water sampling processes is avoided, time opening the sealing cover and water inlet duration time can be controlled; depth of the water sampling container can be indicated, and layering water sampling is accurately controlled; the water sampler is simple in structure, low in cost, light, convenient to carry and applicable to field operation.

Description

technical field [0001] The invention relates to a water harvesting device and a water harvesting method for a new structure, in particular to a water harvesting device and a water harvesting method for inland water body sampling. Background technique [0002] Water sampling of inland water bodies requires on-site water sampling in most cases. Sometimes it is necessary to take samples sequentially at different depths to obtain the on-site water body information of the gradient profile, so as to ensure the unity, standardization and analogy of the analysis results. In recent decades, water sampling and preservation technology has developed rapidly, and various water harvesting devices have come out one after another, but each water harvesting device has certain defects in its application. Therefore, it is of great practical significance to design a water collection structure that is suitable for small ships, can accurately control the sampling depth, is easy to operate, and i...

AI Technical Summary

Problems solved by technology

[0003] The traditional simple water collection structure cannot replace the water collection container because the water collection device cannot replace the water collection container, so the water samples are prone to cross-contamination. If the residual water samples from the previous water collection site pollute the water samples from the next site, the data will be affected. accuracy

Moreover, when working in the field, since there is no large amount of clean water to clean the water collection container, the problem of cross-contamination of water samples cannot be solved.

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