Back stop device of drain pipe of irrigation seepage control canal

Abstract

The invention discloses a back stop device of a drain pipe of an irrigation seepage control canal, which comprises a base, wherein a groove, an installing groove and a first water gap are arranged on the base; a shaft is arranged in the middle of the base of the first water gap; a positioning lug is arranged on the base; a sealing disc is installed in the groove; a round hole and an arc groove are arranged on the sealing disc; the periphery of the sealing disc is provided with a spacing convex edge; a second water gap is arranged on the sealing disc; the round hole is matched with the shaft; the positioning lug is matched with the arc groove; the spacing convex edge is matched with the edge of the base; a triangle hole is arranged on the sealing disc and communicated with the round hole; a water permeable cover is mounted on the periphery of the base; a water outlet hole is arranged on the water permeable cover; an adjusting rod is installed in the middle of the water permeable cover; a triangle block is arranged at one end of the adjusting rod and matched with the triangle hole; and a flexible pipe is installed on the periphery of the water permeable cover. The invention can solve the problems in the prior art, can prevent water in the canal from reversely flowing and recharging through the drain pipe in an irrigation period, can greatly improve the seepage control effect of the seepage control canal, and simultaneously can not affect the draining function of the drain pipe.

Description

technical field [0001] The invention relates to a backstop device for drainage pipes of irrigation anti-seepage channels. Background technique [0002] With the increasing scarcity of fresh water resources, my country is vigorously promoting agricultural water-saving irrigation technology, among which channel seepage prevention is one of the most important measures of water-saving irrigation technology. When designing irrigation anti-seepage channels, in order to ensure the structural stability and safety of the channel slope and the anti-seepage body, drainage pipes must be installed to effectively reduce the groundwater level on the bank slopes of the anti-seepage channels during the rainfall period. Countercurrent recharging seriously reduces the anti-seepage effect of the anti-seepage channel, resulting in the inability to improve the water utilization coefficient of the canal system. According to statistics, the current utilization coefficient of canal water in large-s...

AI Technical Summary

Problems solved by technology

When designing irrigation anti-seepage channels, in order to ensure the structural stability and safety of the channel slope and the anti-seepage body, drainage pipes must be installed to effectively reduce the groundwater level on the bank slopes of the anti-seepage channels during the rainfall period. Countercurrent recharging seriously reduces the anti-seepage effect of the anti-seepage channel, resulting in the inability to improve the water utilization coefficient of the canal system

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