Trigger-type benthal deposit sampling device

Abstract

The invention belongs to the field of sampling equipment and discloses a trigger-type benthal deposit sampling device. The trigger-type benthal deposit sampling device comprises a rack, a trigger combination mechanism and a sampling mechanism, wherein the trigger combination mechanism comprises a force storage mechanism and a trigger mechanism; the force storage mechanism comprises a first shell, a force storage spring, a hand wheel, a force storage rocker, a gear and a rack; the trigger mechanism comprises a second shell and a first limiting mechanism; the sampling mechanism comprises a sampling tube, a connecting rod mechanism, a sealing sheet and a second limiting mechanism; the sealing sheet is hinged with the sampling tube and is also hinged with the connecting rod mechanism for blocking the bottom end of the sampling tube; and the second limiting mechanism is arranged on the rack for limiting displacement of the connecting rod mechanism. Through cooperation of the force storage mechanism and the trigger mechanism of the sampling device, the sampling tube can penetrate into the water bottom for sampling and sampling is convenient; furthermore, the connecting rod mechanism can drive the sealing plate to rotate to seal the sampling tube, so that the sealing action can be accurately and effectively achieved and a user does not need to worry about the damage of a hard material to the sampling tube.

Description

technical field [0001] The invention belongs to the field of sampling equipment, and more specifically relates to a trigger type underwater sediment sampling device. Background technique [0002] Bottom sediment sampling is of great significance for environmental monitoring and resource exploration. Therefore, there is a need for a bottom sediment sampling device that is easy to disassemble, simple and effective, easy to operate in the field, and highly reliable. , The requirements for less disturbance to the underwater environment. Among the existing sediment collectors, the grab-type sediment sampler and the box-type sediment sampler are relatively large in size and cause great disturbance to the bottom of the water, making it difficult to achieve non-destructive and sealed sampling; the general rod-inserted sediment sampler, Columnar sediment samplers have a limited depth of insertion into the soil and are only suitable for soft sediments; vibrating samplers can collect ...

AI Technical Summary

Problems solved by technology

Among the existing sediment collectors, the grab-type sediment sampler and the box-type sediment sampler are relatively large in size, which disturbs the bottom of the water greatly, and it is difficult to achieve non-destructive sealing sampling; the general rod-type sediment sampler, Columnar sediment samplers have a limited depth of penetration into the soil and are only suitable for softer sediments; vibratory samplers can collect harder sediments, but they are bulky and inconvenient for underwater energy supply

In addition, although the current purely mechanical underwater sediment sampling device does not require external power such as electricity, it automatically triggers sampling when the sampling device reaches the bottom. Due to the complexity of the underwater environment, it is not clear whether the sampling position is suitable. It is easy to cause sampling failure or damage the sampling cylinder when encountering hard substances

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