Mechanical hand-held integral sea bottom sediment air-tight sampler and sampling method

Abstract

The invention discloses a mechanical hand-held integral sea bottom sediment air-tight sampler and a sampling method, wherein the sampler comprises a pressure maintaining cylinder, a recovery spring, asampling pipe, a flap sealing mechanism and a triggering mechanism; the opening of the pressure maintaining cylinder is provided with a flap sealing mechanism, the flap sealing mechanism comprises aflap valve seat and a flap valve, the flap valve is hinged on the flap valve seat near the valve hole, and a torsion spring is arranged between the flap valve and the flap valve seat; the flap valve seat is in sealing connection with the pressure maintaining cylinder; the sampling pipe is inserted in the pressure maintaining cylinder, and the sampling pipe is coaxial with the valve hole on the flap valve seat; a recovery spring is arranged between the top of the inner hole of the pressure maintaining cylinder and the top of the sampling pipe; the trigger mechanism is arranged on the side wallof the pressure maintaining cylinder, so that the sampling tube can be recovered to the pressure maintaining cylinder under the action of the recovery spring. The mechanical hand-held integral sea bottom sediment air-tight sampler that the whole automatic action of the sampler and the automatic air-tight seal function can be realized by the one-time trigger action of the manipulator, and the operation is simple and reliable, and the mechanical hand-held integral sea bottom sediment air-tight sampler also has the advantages of simple and compact structure and convenient operation.

Description

technical field [0001] The invention relates to a seabed sampling device, in particular to a mechanical hand-held integrated seabed sediment airtight sampler and a sampling method. Background technique [0002] The ocean is a huge treasure house of common resources for mankind, containing rich minerals, organisms, oil and gas, and other resources. There are a large number of microorganisms and other life communities in the seabed sediments. These microbial communities are an important way for humans to understand and study the evolution of abyssal life and changes in the seabed environment. Due to the special high-pressure environmental conditions of the seabed, it is necessary to reduce the fluctuation of the external environmental pressure of microorganisms as much as possible during the collection of seabed sediments, so as to avoid the influence of changes in external pressure on the life characteristics of barophilic microorganisms. However, at present, the mechanical ...

AI Technical Summary

Problems solved by technology

However, at present, the mechanical hand-held seabed sediment samplers used by the "Jiaolong" manned submersible and the "Haima" ROV are all non-airtight pressure-holding samplers, which will have a great impact on the study of the life characteristics of pressure-loving microorganisms. Therefore, it is necessary to develop a mechanical hand-held seabed sediment airtight sampler, so as to provide high-quality seabed pressure-holding samples for scientific research such as the life evolution of seabed microbial communities

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