Hand-operated stratified fixed-depth water sampler

Abstract

The invention discloses a hand-operated stratified fixed-depth water sampler. The water sampler comprises a power unit which consists of a hand-operated clean water pump and a water sampling tube, a depth fixing part which consists of a T-shaped helical telescope tube and a round balancer, and an disturbance prevention part which consists of a mesh disturbance prevention cylinder. An operator fixes the hand-operated clean water pump on a ship, fixes the water sampling tube on the T-shaped helical telescopic tube by a pipe clamp according to the required sampling depth, holds the upper end of the T-shaped helical telescopic tube, and slowly and vertically puts the T-shaped helical telescopic tube into a water body until the round balancer contacts the bottom of the water body, continuously presses a crank handle, discards the initial water samples, collects the needed water samples and completes the sampling action. The water sampler can easily and greatly collect stratified water samples at different depths by hand operation; and the water sampler has simple structure, convenient operation and labour saving in use, and can effectively reduce the influence of bed mud disturbance on bottom water sampling.

Description

technical field [0001] The invention relates to a water sample sampler, in particular to a hand-operated stratified depth-fixed water sampling device. Background technique [0002] Water body sampling is an important part of water environment scientific research and water environment protection and management. The collection of water samples at different depths, especially bottom water samples, is the premise and basis for the smooth development of various research work. At present, a variety of commercial stratified water samplers (or devices) have been developed, which can collect stratified water samples with different requirements. However, this type of layered water sampler is mostly designed for marine scientific research work, and requires special ships to provide power and lifting equipment. It has the disadvantages of complex structure and difficult operation, and is not suitable for sampling activities where light ships in lakes and reservoirs are used as sampling ...

AI Technical Summary

Problems solved by technology

However, this type of layered water sampler is mostly designed for marine scientific research work, and requires special ships to provide power and lifting equipment. It has the disadvantages of complex structure and difficult operation, and is not suitable for sampling activities where light ships in lakes and reservoirs are used as sampling carriers.

However, most of the existing lake and reservoir water samplers are designed in the sampling bottle type, and the volume of water samples collected at one time is limited. When collecting large-capacity stratified water samples, the operation is cumbersome.

The disclosed water sampling device of CN2041813U and the disclosed software of CN87209011U adopt the water sampling bottle made of stainless steel and impermeable flexible material respectively, but there is a shortcoming that it is difficult to collect layered and fixed depth water samples and a sampling volume is small

Although the automatic depth-fixed water sampling device disclosed by CN2031925U and a kind of layered water sampler for lakes and reservoirs disclosed by CN101221099A have preferably solved the problem of water body fixed-depth layered sampling, the sampling bottle type design still makes a sampling volume limited, and When these samplers sample the bottom water of lakes and reservoirs, they will generate large disturbances, so that the collected water contains more sediment and re-suspended particles, which will ultimately affect the bottom water sample collection effect and research analysis.

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