Seabed water sampler

Abstract

The invention discloses a seabed water sample depth-setting sampler. By the adoption of the seabed water sample depth-setting sampler, it can be guaranteed that bottom seawater at a set depth is sampled, and the problem that when a hammer touches the bottom, muddy water is stirred up to affect the quality of sampled water can be effectively solved. The seabed water sample depth-setting sampler comprises a water sampler, a hauling cable connected with the upper end of the water sampler, and a trigger expansion type hammer device, wherein a floating device is arranged on the hauling cable, the buoyancy of the floating device is larger than the sum of the gravity of the water sampler and the gravity of the floating device and smaller than the sum of the gravity of the water sampler, the gravity of the floating device and the gravity of the trigger expansion type hammer device, the trigger expansion type hammer device comprises a main supporting rod, a trigger expansion type buffer umbrella arranged on the main supporting rod, a triggering device and a main balance weight, and the main balance weight is located under the trigger expansion type buffer umbrella.

Description

technical field [0001] The invention relates to a water sampling device, in particular to a depth-fixed sampling device for seabed water samples. Background technique [0002] In a large number of scientific research and marine environmental monitoring work, it is usually necessary to collect a certain amount (depending on project requirements) of bottom seawater for bottom water quality (including pH value, dissolved oxygen, phosphate, inorganic nitrogen, heavy metals, etc.) or Analysis of plankton (including zooplankton and phytoplankton), etc. Bottom seawater generally refers to seawater at a depth of 2 meters (or 0.5 meters from the seabed) (GB17378.3-2007 "Marine Monitoring Specification Part 3: Sample Collection, Storage and Transportation" stipulates that the maximum It is best to take the water layer 2 meters away from the seabed, and the distance from the bottom layer can be increased as appropriate in deep sea or strong wind and waves). [0003] The current botto...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a bottom seawater that can not only ensure that the collected seawater is a set depth; Depth-fixed sampler for seabed water samples with problems in the quality of collected water samples

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