Timed deep water layered water intake device

Abstract

The invention discloses a method and a device for timing deepwater layering water taking. A water taking machine is adopted by the method and the device. The water taking machine is provided with a timing transmission device (4) capable of opening a water inlet (8) of the water taking machine at a preset time, and is also provided with a pressurized type open / close cone valve assembly capable of closing the water inlet path of a water storage drum (6) before water taking. The opening of the water inlet path of the water storage drum (6) is provided with an anti-blocking seepage-proofing buoyant valve capable of automatically closing the water inlet path of the water storage drum (6) after the water storage drum (6) is filled with water. By adoption of the method and the device, the water taking machine is isolated with water in advance before reaching a water taking depth in a water taking process, and begins to take water when arriving the water taking depth, and prevents mixing between a took water sample and outside water body after the water taking process is finished.

Description

technical field [0001] The present invention relates to a method for taking water at any depth in underground water bodies such as boreholes or at any depth in surface water bodies such as rivers and lakes, and also relates to a water taking device for realizing the method for taking water in layers at regular intervals, which belongs to hydrology and water resources Technical field, especially the technical field of water quality sampling and detection. Background technique [0002] In hydrological and geological production and scientific research, it is often necessary to take water samples at a certain depth underwater for water quality analysis and observation. In this way, there will be the following problems in the process of water intake. First, in the process of lowering the water intake device, the water intake device may have begun to enter the water before reaching the water intake depth, resulting in the water samples taken from water bodies of different depths. ...

AI Technical Summary

Problems solved by technology

In this way, there will be the following problems in the process of water intake. First, in the process of lowering the water intake device, the water intake device may have begun to enter the water before reaching the water intake depth, resulting in the water samples taken from water bodies of different depths. Mixed, unable to represent the characteristics of water quality at a specific depth; secondly, it is impossible to accurately set the water intake after reaching the water intake depth, that is, it is impossible to accurately set the start time of water intake; moreover, after the water intake is completed, the water intake device has been opened during the lifting process The water inlet cannot be isolated. During this process, since the water storage cylinder of the water dispenser is not equipped with an anti-overflow device, the water samples already taken in the water storage cylinder can easily overflow from the water inlet on the upper part of the water storage cylinder during the lifting process of the water dispenser. At the same time, the outside world The water will enter the water storage tank and cause mixing with the obtained water sample

Due to the different water samples at different depths, the water quality changes after the water in the water storage tank is mixed with water bodies at different depths cannot accurately represent the water quality conditions at the corresponding water intake depths, which has a great impact on the water body research work, making the water body research results Not accurate enough

Although some existing water intake methods and devices can solve the above problems to a certain extent, this type of water intake device has many components, complex structure, large volume and weight, and cumbersome operation, which reduces the cost of the equipment. Reliability and Sampling Depth

Therefore, the existing water intake methods and devices are still not ideal enough, and it is difficult to meet the needs of more and more accurate water quality detection scientific research work.

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