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An underwater sediment automatic sampling device

An automatic sampling and sediment technology, applied in sampling devices and other directions, can solve the problems of difficulty in ensuring the integrity and representativeness of samples, sample loss, and large impact effects, so as to ensure integrity and effectiveness, ensure integrity, reduce impact effect

Active Publication Date: 2022-03-08
四川省绵阳生态环境监测中心站
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  • Abstract
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Problems solved by technology

[0004] Since these samplers do not have independent motion adjustment capabilities, they are greatly affected by the impact of water flow during the sinking process, so the sampling positions are random and it is difficult to obtain satisfactory samples. Impact, causing the sediment to flow, resulting in differences between the collected samples and the actual sediment, making it difficult to ensure the integrity and representativeness of the sample
On the other hand, in the process of recovering the sample from the bottom of the water, due to the impact of water flow or improper operation, it is easy to cause sample loss, affecting the integrity and validity of the sample

Method used

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  • An underwater sediment automatic sampling device
  • An underwater sediment automatic sampling device
  • An underwater sediment automatic sampling device

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specific Embodiment approach

[0076] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS: During sampling, the submersible 10 is advanced to an appropriate position through the remote control device. When the submersible 10 enters the water, it is first submerged in water, and then the longitudinal propeller 12 is used to make it dive or rise. The lifting mechanism 20 drives the sampling component 30 to descend at a constant speed, so as to avoid impact and prevent the sliding cover 33 from sliding upward relative to the outer cover 31 , and avoid opening the sealing cover 41 . The sampling part 30 starts to slowly contact with the sediment during the descent, and the local sediment is covered by the conical structure of the lower part of the outer cover 31 to prevent it from scattering. Sampling part 30 descends further, and the deposit volume in the outer cover 31 will increase gradually, and the water at the bottom of sliding cover 33 will upwardly discharge from through hole 332, and discharge through the...

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Abstract

The application provides an automatic underwater sediment sampling device, which belongs to the technical field of water quality monitoring and sampling devices. The device includes: a submersible, a lifting mechanism, a sampling component and a sample cylinder. The lifting mechanism is located in the submersible and is provided with a push-pull rod. The sampling part is arranged on the lifting mechanism, and the sampling part includes an outer cover and a mounting tube, a sliding cover is arranged above the installing tube, a locking mechanism is provided on the top surface of the sliding cover, and a detachment mechanism is provided on the top surface inside the outer cover. The sample cylinder passes through the installation pipe upwards from the bottom of the installation pipe, the sample cylinder includes a sealing cover, and the sealing cover is detachably arranged at the bottom of the sliding cover before sampling. When the lower end of the push-pull rod is connected with the locking mechanism, control the sliding cover to move up and down to press the sealing cover into the sample cylinder; the unhook mechanism cooperates with the locking mechanism to separate the push-pull rod from the locking mechanism. The underwater sediment automatic sampling device can accurately find a suitable sampling position and ensure the integrity, representativeness and validity of the sample.

Description

technical field [0001] The invention belongs to the technical field of water quality monitoring and sampling devices, in particular to an automatic sampling device for underwater sediments. Background technique [0002] In the process of environmental monitoring, scientific research, etc., sediment samplers are required to collect sediments from rivers, lakes, reservoirs, oceans and other water bodies. At present, the sampling work is generally carried out by using physical properties. For the collection of sandy sediment surface Samples generally use cone samplers, drill samplers, plummet samplers, etc. Shovel samplers and clam samplers are generally used to collect surface samples of pebble sediments. The columnar sampler is mainly suitable for layered sampling of sediments in still water areas. It is mainly used for sampling of lake reservoirs, river reservoir areas, and marine sediments. It can collect columnar samples at a certain depth. [0003] The above-mentioned s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 王秀丽黄强宋鹏程张义烽乔君喜张雪梅郑少志马万凤贺雪峰孙可
Owner 四川省绵阳生态环境监测中心站
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