Air Control Groundwater Depth Sampler

Abstract

The invention discloses an air-controlled groundwater depth-fixed sampler, which relates to the field of groundwater sampling and includes a mounting platform, a servo motor, an air pump, and a sampling mechanism. Both the servo motor and the air pump are fixedly installed on the top side wall of the mounting platform. The top side wall of the installation platform is fixedly provided with a bracket, the side wall of the bracket is rotatably connected with a reel, the side wall of the reel is wound with a sling, and the end of the sling is fixedly connected with the sampling mechanism, The sampling mechanism is lowered to the required depth through the sling, and the air pump is controlled to inflate and deflate the two sampling tubes on the side wall of the lower end of the mounting seat successively, so that the inside of the two sampling tubes can be filled with water successively, and then in a certain After the first water sampling is completed, the sampling mechanism can be retracted to the second depth to carry out the second water sampling work, so as to realize the function of multi-layer sampling by setting out the line at one time, without the need to monitor the sampling mechanism multiple times. Take it back in the well, and put it down again, which simplifies the process and is more convenient.

Description

technical field [0001] The invention relates to the field of groundwater sampling, in particular to an air-controlled groundwater depth-fixing sampler. Background technique [0002] In the investigation of groundwater pollution, obtaining representative groundwater samples from monitoring wells is the first step in investigation and monitoring. Developed countries attach great importance to groundwater pollution investigation and sampling technology, and have conducted in-depth research on sampling devices. At present, the types of groundwater samplers mainly include: grab sampler, negative pressure lift sampler, gas displacement sampler, pneumatic impeller pump, electric submersible pump, inertial lift pump, etc. Among them, the air-controlled discontinuous sampler belongs to a kind of grasping sampler, which is mainly used for the fixed-depth and small-volume sampling of groundwater. The sampling process is: before the sampler is lowered into the well, it is inflated wit...

AI Technical Summary

Problems solved by technology

[0004] When the traditional air-controlled groundwater sampler samples the groundwater, it can only sample the water layer at one depth during the whole process from being placed in the monitoring well to being withdrawn. When it is necessary to sample multiple layers of groundwater at different depths, multiple A series of operations such as repeated retraction, sampling, etc. have low efficiency. Therefore, we have proposed an air-controlled groundwater depth-fixed sampler to solve the above problems.

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