Irrigation drip prevention device and irrigation system

Abstract

The invention provides an irrigation drip prevention device and an irrigation system, and relates to the technical field of drip prevention in farmland irrigation. The irrigation drip prevention device comprises an elastic seal, a sealing support and a driving assembly; the elastic seal sleeves the sealing support, the sealing support comprises at least two sub-sealing supports which can move relative to each other, and the sub-sealing supports can achieve sealing together with the elastic seal when the elastic seal is in a natural state; and the driving assembly is in transmission connectionwith at least one sub-sealing support and used for driving the sub-sealing supports to open mutually. By means of the scheme, the technical problem that water stored in a pipe network can flow out along a dripper is solved, and the technical effect of actively discharging the water stored in the pipe network from the space between the sub-sealing supports to prevent damage caused by freezing expansion of the stored water to the pipe network and the device is also achieved.

Description

technical field [0001] The invention relates to the technical field of anti-drip for farmland irrigation, in particular to an anti-drip device for irrigation and an irrigation system. Background technique [0002] Water-saving irrigation technologies mainly include sprinkler irrigation, micro-sprinkler irrigation, and drip irrigation. [0003] For the suspended sprinkler head in sprinkler irrigation and micro-sprinkler irrigation technology (that is, the water supply pipe is above the sprinkler head), such as the central pivot type sprinkler irrigation machine used in field grain crops and cotton planting, the upside-down sprinkler used in greenhouse seedlings, vegetables, and flower cultivation In actual use, there will be the following problems: 1. After each irrigation, the water in the main pipe network (trunk pipe, branch pipe) will move downward along the nozzle in the form of water droplets, causing If the crops get more water and fertilizer, it will also damage leaf...

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Problems solved by technology

[0003] For the suspended sprinkler head in sprinkler irrigation and micro-sprinkler irrigation technology (that is, the water supply pipe is above the sprinkler head), such as the central pivot type sprinkler irrigation machine used in field grain crops and cotton planting, the upside-down sprinkler used in greenhouse seedlings, vegetables, and flower cultivation In actual use, there will be the following problems: 1. After each irrigation, the water in the main pipe network (trunk pipe, branch pipe) will move downward along the nozzle in the form of water droplets, causing If the crops get more water and fertilizer, it will also damage leafy vegetables and flowers, causing economic losses; 2. When the irrigation system is started again, the main pipe network needs to be filled first. Work behind the far nozzle, which will cause uneven water spraying and fertilization; 3. When the system is just started, the pressure of the pipe network is small, and the water moves downward in the form of water droplets, which will also damage leafy vegetables and flowers

[0004] The above-mentioned problems also exist in the drip irrigation technology: after each irrigation, the water in the pipe network will flow out along the dripper; High, the pressure at the end of the pipe network is low, there is a problem that the capillary near the water pump has been dripping for a long time, and the capillary far away from the pump starts to drip water

In this scheme, whether the water stored in the pipe network flows out and the amount of water flowing out depends on the installation position of the valve relative to the nozzle and whether the valve is installed horizontally, which has great limitations in actual engineering.

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