Automatic sealing rotating stabilized deep sediment sampler

Abstract

The invention provides an automatic sealing rotating stabilized deep sediment sampler. The automatic sealing rotating stabilized deep sediment sampler comprises a sampler main body, an automatic bottom sealing device and a sampling pipe. The sampler main body comprises a base, a rope connecting rod, an automatic sealing hook, supporting rods 8 and a sampling pipe sealing valve. The automatic bottom sealing device comprises a rubber belt, a rubber ball and a nylon rope, two ends of the rubber belt are connected with two ends of the rope, the rubber ball is connected to a middle section of the rope, the rope is hung on the automatic sealing hook, two ends of the rope respectively pass through open holes of the two supporting rods, and the rubber belt passes through a rope connecting hole in the rope connecting rod. By adopting the automatic sealing rotating stabilized deep sediment sampler, the problems of the conventional sediment sampler that the sampling depth is shallow, the sampling pipe cannot be replaced, the sampler cannot be automatically sealed, the form of sediment is damaged and the like can be solved, and a complete cylindrical sediment sample including overlying water can be acquired.

Description

technical field [0001] The invention belongs to the technical field of sewage sludge treatment, and in particular relates to a collection device for underwater sediment. Background technique [0002] Sediment is an important part of water body. The analysis of ocean and lake sediments is useful for the study of water body formation process, atmospheric historical conditions, analysis of water body minerals and organic matter content, especially the nutrient salts that cause algal blooms and biological toxicity. heavy metals, etc., is of great significance. Nowadays, the eutrophication of water body is already an important environmental problem facing the world. When the input of exogenous nutrient salt is effectively controlled, the release of nutrient salt in sediment becomes the main source of nutrient salt in water body, which requires To study the properties of the sediment and the migration and transformation laws of the sediment-water interface, it is very necessary t...

AI Technical Summary

Problems solved by technology

[0005] Columnar sediment samplers, especially deep-water sediment samplers, are difficult to solve the problem that the sampling tube is closed after collecting sediment

Use of incomplete or unsealed devices may result in sample loss or sample destruction

[0006] (2) Large sample interference

[0009] In order to ensure that the sediment sampler can close the sampling tube after sampling, some samplers use manual devices, but this design requires a control rod to connect the sampler. Generally, the length of the control rod is limited, which limits this type of sampler. Shallow sediments cannot meet the collection requirements of deep lake or marine sediments

[0010] (4) Low sampling efficiency

[0011] Some sediment samplers are designed with only one set of sample storage devices, so that only one sample can be obtained or the next sampling can be performed after on-site treatment, which is difficult to meet the sampling requirements when the number of samples required is large

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