Eccentric self-rotating plugging type water sample collection device and method

Abstract

The invention discloses an eccentric self-rotating plugging type water sample collection device and method. The device comprises an unmanned ship, an electric cylinder is installed on the unmanned ship, the bottom end of a piston rod of the electric cylinder is connected with a sampler, the sampler comprises a support plate, and the bottom of the support plate is connected with an inclined U-shaped frame. A protection cylinder is hinged to the U-shaped frame through a pin shaft. A sampling pipe is mounted in the protection cylinder in a sleeving manner, a first magnet sheet is connected to one side of the U-shaped frame, and when the protection cylinder is adsorbed on the surface of the first magnet sheet, the protection cylinder is inclined; the U-shaped frame is connected with a second magnet piece, and when the protection cylinder is attracted to the surface of the second magnet sheet, the protection cylinder is in a vertical shape. The device further comprises a rotating plate, and the top of the rotating plate is hinged to the supporting plate through a rotating shaft. A torsional spring is arranged on the rotating shaft; and a plugging plate is slidably connected to the surface of one side of the rotating plate, and when the protection cylinder is in a vertical shape, the plugging plate is pressed at the pipe opening, so that plugging of the pipe opening is achieved. The whole sampling process is simple to operate, efficient, intelligent and convenient for remote control.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to an eccentric self-rotating plugging type water sample collection device and method. Background technique [0002] Water sample collection is an important link in the work of water quality monitoring and hydrological measurement for environmental protection. It is not a simple collection of water samples, because the water samples provided for analysis must be representative in order to accurately reflect the concentration and indicators of water quality parameters. There are many factors that affect the collection of water samples, such as sampling points, sampling instruments, sampling volume, sampling methods, and even storage of water samples. Changes in any of these factors may lead to changes in the analysis results. Therefore, how to make the collected water samples truly and accurately reflect the water quality is the first problem that must be solve...

AI Technical Summary

Problems solved by technology

At present, the sampling methods include automatic sampling and manual sampling. The two sampling methods have their own advantages and disadvantages. Traditional manual sampling usually uses sampling barrels or sampling bottles, which have the advantages of low cost and relatively simple, but there are Disadvantages of time-consuming and laborious and potential safety hazards; automatic sampling devices on the market have appeared based on unmanned aerial vehicles to complete the sampling work, which has the advantages of high automation, time-saving and labor-saving advantages, but it has the following disadvantages: First, the use of unmanned Machine sampling requires high cost, high cost, and inconvenient daily maintenance. It is difficult for a general-scale water sample testing organization to afford the high cost; secondly, the water body sampling drone samples the water body through a hanging sampling bottle. The opening of the bottle is facing upwards. Since the sampling bottle lacks an automatic sealing structure, some garbage in the water body may enter the sampling bottle. In addition, the water in the sampling bottle is very easy to scatter when it moves with the drone, resulting in the The volume of samples is different, and the purpose of quantitative sampling cannot be achieved, making the collected samples unrepresentative; in addition, the existing drones still have the problem of inconvenient loading and unloading of sampling bottles, which affects work efficiency

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