A water body sediment sampler

Abstract

The invention discloses a water body sediment sampler. A sealing head is arranged at the upper end of the sampler bracket, a vertically arranged sampling pipe is arranged at the lower end of the sealing head, a one-way valve is arranged at the upper end of the sealing head, and the one-way valve communicates with the sampling pipe. The sampler bracket is provided with a control switch corresponding to the lower part of the sampling tube, the control switch is equipped with a bottom plug, the sampler bracket above the control switch is provided with an elastic rope bracket, and the elastic rope bracket extends downward to the lower end of the sampling tube, The ends of the elastic rope bracket are respectively provided with positioning holes on both sides of the sampling tube. The elastic rope brackets are respectively provided with elastic ropes on both sides of the sampling tube. The other end of the elastic rope passes through the corresponding positioning holes and is fixed on the bottom plug. The lower end of the sampler bracket Protrude a distance from the end of the sampling tube. It ensures that the mud column in the sampling pipe will not slide down, and ensures that the mud column can still remain completely in the sampling pipe when the sampling pipe is exposed to the water surface and the pressure is unbalanced.

Description

technical field [0001] The invention relates to a water body sediment sampler. Background technique [0002] The bottom mud of rivers or lakes is composed of clay, silt, organic matter or various minerals. After a long period of physical, chemical, biological action and water body transportation, it is the mud that is deposited on the bottom of the water body. It is the main source of water body pollutants. Reservoirs and secondary release sources can reflect the current pollution status and history of water pollution. In order to study the accumulation, distribution, transformation, and migration of water pollutants in the sediment and their impact on the water environment, sediment samples at different depths were collected. Analytical research has important scientific value and practical significance for water environment monitoring. [0003] Sediment sampler is an important tool for water environment monitoring. At present, the main sediment samplers at home and abroad ...

AI Technical Summary

Problems solved by technology

Gravity columnar sampler is suitable for water depth within 5m. The sampling tube is generally 1m long. The main components include cutting head, plexiglass sampling tube, extension rod, hitting handle, lifting device, etc. This kind of sampler is simple, light and easy to use. However, there are still disadvantages such as easy to cause interference fluctuations during sampling, and poor adaptability to the environment.

Piston sampler is composed of T-shaped handle, sampler, sampling tube, cutting head, piston, expansion connecting rod and other connections. Although the sampler is simple and fast in sampling and can maintain the original properties of sediment, it is inconvenient to carry and use , Sampling depth has great limitations and other shortcomings

The grab sampler is simple in structure and easy to operate, but it has the disadvantages of serious interference to the natural layer of the sediment during the sampling process, poor sealing, and easy loss of samples.

[0004] Generally, the sediment sampler needs an external power source to complete the corresponding operation, but when collecting samples in the field, it is often difficult to find a power source, and the sediment sampler cannot be used

However, if an external power supply is configured, a heavy battery needs to be carried, which increases the burden on the collection personnel, and the mud sampler in the prior art has disadvantages such as complex structure, numerous components, high cost, easy damage, and high maintenance cost.

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