Rubber and plastic folding water stop sheet type one-way automatic drain valve

Abstract

The invention relates to a rubber and plastic folding water stop strip type one-way automatic drain valve. The rubber and plastic folding water stop strip type one-way automatic drain valve is characterized by consisting of a hole hourglass type folding water stop strip (1), a top plate (2), a first outer casing pipe (4), an inner casing pipe (5), a second outer casing pipe (6) and quartz sand (7), wherein water draining holes (3) are formed in the hole hourglass type folding water stop strip (1); the upper part of the hole hourglass type folding water stop strip (1) and the top plate (2) are seamlessly connected by adhesive; the lower part of the hole hourglass type folding water stop strip (1) is connected with the first outer casing pipe (4) through a clamping groove (11); the upper end and the lower end of the inner casing pipe (5) are separately inserted into the first outer casing pipe (4) and the second outer casing pipe (6); the quartz sand (7) is placed inside the second outer casing pipe (6); and water inlet holes (8) are formed in the bottom of the second outer casing pipe. The rubber and plastic folding water stop strip type one-way automatic drain valve disclosed by the invention adapts to any water quality and can automatically drain water without manual operation, so that time and labor are saved.

Description

technical field [0001] The invention belongs to the technical field of drainage devices in water conservancy projects, in particular to a one-way automatic drainage valve of rubber-plastic folding water-stop sheet type. Background technique [0002] With the increasing shortage of fresh water resources, various anti-seepage technologies are increasingly used in the construction of channels and plain reservoirs to prevent seepage losses. Although the anti-seepage is effectively solved, it also hinders the drainage and seepage of groundwater. When the groundwater level is higher than the water level of the channels and plain reservoirs, the uplift pressure acting on the bottom and slope increases, and the anti-seepage layer has large areas of gushing springs, bulging and cracking. In order to eliminate this kind of damage, most projects adopt mechanical or floating ball one-way drain valves, which have problems such as inflexibility, easy damage, and impact by water quality in...

AI Technical Summary

Problems solved by technology

In order to eliminate this kind of damage, most projects adopt mechanical or float type one-way drain valves, which have problems such as inflexibility, easy damage, and influence by water quality in practical applications.

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