Piston type visible water sample collection instrument

Abstract

The invention discloses a piston type visible water sample collection instrument and belongs to the technical field of environment monitoring, environment control and water sample collection. The piston type visible water body sample collection instrument mainly comprises a mooring rope with scales, a trigger, a bucket body, a piston mechanism, a buffer plate and a counterweight. The mooring rope with scales is utilized to confirm the sampling position; the transparent two-section type bucket body structure is suitable for collection of samples with multiple shapes; and the buffer plate can be used for reducing interference of a water taking process on a water body form. The trigger starts to work after the collection instrument reaches the collection depth, the bucket body falls down under the action of the counterweight, and the water storage end slowly enters into the bucket body, so that the purpose of collecting a water sample with an appointed depth is achieved. The piston type visible water sample collection instrument has the benefits as follows: the slightly disturbed sample collection under multiple shapes is achieved, the water body situation can be directly observed, and the representativeness and the fidelity of the sample are improved. The piston type visible water sample collection instrument can be used for collecting water bodies such as rivers, lakes, reservoirs and the like, and has the characteristics of good fidelity, high precision, good representativeness, low manufacture cost and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, environmental treatment and water body sample collection, and relates to water body sample collection of rivers, lakes and reservoirs, in particular to water body sample collection with more suspended solids or complex water body shapes. Background technique [0002] The collection and preservation of water samples is the basis of water pollution control and research. As time goes by, the cumulative effect of environmental problems becomes more and more prominent. How to effectively collect representative water samples has become the key to water environment governance and research. There are a large number of sedimentary or flocculated pollutants deposited on the bottom of water bodies such as rivers, lakes, and reservoirs, which affect the water quality of the water body. Especially in Northeast China, the annual average rainfall is small and the water exchange rate of the re...

AI Technical Summary

Problems solved by technology

Among them, the pump-suction type, such as the peristaltic pump deep-water sampler introduced by Xia Ziqiang (2006), can collect water samples at different depths, but the water body is greatly disturbed during sampling, especially the flocculent substances in the water body are seriously damaged, which directly affects the water quality. Representativeness of samples; Niss gold bottles and Nansen bottles based on the "open-close" principle, such as the card-type water collector produced by the German HYDRO-BIOS company, have less disturbance to the water body than the pump-suction type, but are only suitable for lakes and reservoirs For static water bodies, the exchange capacity for flowing water bodies such as rivers is insufficient; the horizontal sampler is suitable for flowing water bodies such as rivers, but for still water bodies such as lakes and reservoirs, the water exchange capacity is insufficient; the Multi-Limnos automatic water sample produced by Germany HYDRO-BIOS company The water inlet method of the collector is one-way water inlet, which greatly disturbs the flocs in the water body; the CTD48M temperature, salinity and depth meter produced by German SST company can measure water depth, temperature, and salinity, but its price is as high as 100,000 RMB, and Salinity-related indicators can collect water samples and return them to the laboratory for analysis

[0005] Obviously, none of the above-mentioned equipment has the function of collecting multi-morphic micro-disturbance samples, especially for the collection of water samples containing suspended flocculation in the lower layer of the reservoir.

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