Fixed-layer sampling device for underground water

Abstract

The invention provides a fixed-layer sampling device for underground water. The fixed-layer sampling device comprises a support frame, a sampling device is arranged at the bottom of the support frame, and a first pull rope and a second pull rope are respectively connected to the side, far away from an upper electromagnet, of a lower electromagnet. The first pull rope penetrates through a first isolation frame and then is connected to the side, close to a second spring, of a first rubber plug. A piston pipe comprises an outer annular piston pipe body, a communicating piston pipe body and a center ring piston pipe body which are communicated with one another. A push rod is fixedly arranged at the bottom of a circular piston plate. A conical water inlet groove is correspondingly formed in the top wall, close to a conical plug, of a sampling box. The fixed-layer sampling device for underground water provided by the invention can be used for simultaneously sampling multiple layers of water bodies, is high in sampling speed, can directly guide the water bodies into the sampling box, and can seal the sampling box in a sealed environment after sampling is finished, so that pollution is prevented, the operation steps and the use are simplified, and the device is higher in efficiency and worthy of popularization and use.

Description

Technical field [0001] The present invention relates to the field of water sample acquisition, and is specifically a fixed layer sampling device for groundwater. Background technique [0002] When conducting a hydrological survey, the water samples of different water layers in the reservoir are important experimental methods for obtaining water data of reservoirs. Traditional water-layer sampling usually samples with a single simple bottle, and the sampling accuracy is not high, and only one can only Collecting a layer, when the hydrological survey is conducted, the multiple aquifewater needs to be repeatedly operated, waste humanity, and low collection efficiency. [0003] In the prior art, a water body is derived from a water body according to "20171029488.6", which involves the sampler is a pulley handle, pulley, welding steel, top tube, top tube water, tip pipe outlet , First rubber hose, first water clip, first thread connection, elastic stop tape, middle tube, medium tube w...

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Problems solved by technology

[0004] However, there are still obvious defects in its use: 1. The above-mentioned device seals the sampling water storage space by covering the water inlet with an elastic waterstop before sampling. , its tightness is not reliable, so that before the above-mentioned device reaches the predetermined depth, the water sample may enter the water inlet through the covered elastic waterstop, so that the final sampling water body is polluted, and the error is relatively large; 2. The above-mentioned vacuum sampling Due to the existence of air pressure in the pipe, the resistance of water entering the pipe is relatively large, the sampling speed is slow, and the efficiency is low; The samples are diverted from the corresponding outlet pipes respectively, so it is necessary to prepare an additional sampling water collection device, which not only has the possibility of pollution during the transfer, but also increases the cumbersomeness of the sampling operation and is inconvenient to use

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