| 摘要 |
The invention relates to a device for water sampling, made up of a body (1) with two valves, an upper valve (7) and a lower valve (16), that are opened under the pressure of the water from the exterior and are automatically closed when the pressure of the water from the interior is equalized with the pressure of the water from the exterior, wherein the body (1), having a volume of 1...10 l, is parallelipipedal-shaped having two lead weights (2), laterally attached by some screws (3) and two triangular connecting plates (5) joined through an axle (6) for supporting the body (1), said valves (7 and 16) being fastened to the body (1), rotatably movable by some hinges (9) and (17), respectively, said hinges being fastened with a screw (8) and (18), respectively, and sealed upon closing by a seat (11) and (13), respectively, and by a fitting of polymer material (12) and (14), respectively, the body (1) and the valves (7 and 16) being made preferably of transparent plastic, and the fastening elements of a corrosion resistant metal.
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