A deep water body sampling device for water quality monitoring

Abstract

The invention discloses a deep water body sampling device for water quality monitoring. The deep water body sampling device comprises a box body, a lifting part, a rotary extrusion part and a samplingpart, wherein the box body is a mounting platform for the lifting part, the rotary extrusion part and the sampling part; aiming at deep water body sampling, a plurality of air cylinders are used forcontrolling corresponding moving rod pieces respectively, finally, the sampling part in the box body is separated from and matched with the sampling chamber, good sealing performance is achieved whenthe sampling chamber is matched with a sampling chamber baffle, sampling work on different deep water bodies at a time is achieved, and the operation of repeated sampling is omitted.

Description

technical field [0001] The invention relates to the field of water quality monitoring, in particular to a deep water body sampling device for water quality monitoring. Background technique [0002] Water quality sampling is an important part of water quality monitoring, and it is required to accurately extract water samples at specific time and spatial locations; when sampling deep water, it is often necessary to sample multiple depths according to the depth gradient. Currently, when performing stratified sampling, Generally, a water intake container is lowered to a designated depth, and the water intake container is provided with a cover plate that can be opened and closed in one direction, which is opened during the lowering process and closed during the lifting process, so as to realize the sampling work. There are many disadvantages in this method: First, every Only one depth sample can be taken at a time, and the container needs to be lowered multiple times for sampling...

AI Technical Summary

Problems solved by technology

[0002] Water quality sampling is an important part of water quality monitoring, and it is required to accurately extract water samples at specific time and spatial locations; when sampling deep water, it is often necessary to sample multiple depths according to the depth gradient. Currently, when performing stratified sampling, Generally, a water intake container is lowered to a designated depth, and the water intake container is provided with a cover plate that can be opened and closed in one direction, which is opened during the lowering process and closed during the lifting process, so as to realize the sampling work. There are many disadvantages in this method: First, every Only one depth sample can be taken at a time, and the container needs to be lowered multiple times for sampling when layered sampling; second, the cover plate is opened during the lower process, and the water body enters the container, and the cover plate is difficult to completely seal the container during the lifting process, resulting in mixing into other depths. In order to solve the problem of mixed water samples, a sampling device controlled by a solenoid valve has appeared. After reaching the specified depth, the solenoid valve is opened to take samples. However, electrical components are easy to leak and damage when working underwater, so it is necessary to design an extremely reliable waterproof Even if a waterproof device is designed, the electrical components will still be affected by moisture gradually, which will greatly shorten the service life. All in all, the electrical components are not suitable for this field in terms of cost and reliability

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