Centrifugal farmland automatic drainage device

Abstract

The invention discloses a centrifugal farmland automatic drainage device. The device comprises a floater circuit control device, a filtering screen, a telescopic spring pulling rod, a photovoltaic plate, a shell, impingement plates, a rubber sealing ring, a water inlet, a conical plug, a rotary impeller, a motor, a storage battery, a water outlet, a floater, a fixed batten, a U-shaped rod, a hollow cylinder, fixed electrodes and a conical metal cap. The photovoltaic plate is arranged over the PVC shell, the impingement plates are arranged at the four edge corners of the shell of the drainage device, the filtering screen is installed on the position, close to the upper side, of the front side of the drainage device, and the floater circuit control device, the motor, a storage battery, the conical plug, the rotary impeller and the like are installed in the PVC shell. The floater circuit control device, the motor and the storage form an integrated circuit, and the floater circuit control device controls the on-ff state of a motor circuit, namely starting and stopping of drainage. The drainage device can monitor the highest water level of farmland in time and can meanwhile conduct automatic drainage. The device can automatically and effectively discharge excessive water of the farmland in time, prevents waterlog caused when crops are flooded, and does not need to be watched over by people. Due to rotation of the impeller, drainage efficiency is greatly improved. The drainage device is reasonable in structural design, high in practicality and convenient to use and popularize.

Description

technical field [0001] The invention relates to a centrifugal automatic drainage device for farmland, which belongs to the technical field of agricultural irrigation and drainage. Background technique [0002] In areas with a lot of rainfall in my country, especially in the south, due to excessive precipitation, surface runoff drainage is not timely or cannot be removed on time, and farmland water exceeds the depth and duration of crops' tolerance to flooding, resulting in a major disaster in agricultural production. These reasons for crop yield reduction are mainly reflected in the fact that the depth of accumulated water is too large and the time is too long, so that the air in the soil is discharged one after another, resulting in insufficient oxygen supply to the roots of the crops, and difficulty in breathing in the root area, resulting in the production of a large amount of harmful and toxic substances such as ethanol. Waterlogging and soil return to salinity will affe...

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Problems solved by technology

[0002] In areas with a lot of rainfall in my country, especially in the south, due to excessive precipitation, surface runoff drainage is not timely or cannot be discharged on time, and farmland water exceeds the depth and duration of flood tolerance of crops, resulting in a large reduction in agricultural production.

These reasons for crop yield reduction are mainly reflected in the fact that the depth of accumulated water is too large and the time is too long, so that the air in the soil is discharged one after another, which makes the oxygen supply to the roots of the crops insufficient, and the root area has difficulty breathing, resulting in the production of a large amount of harmful and toxic substances such as ethanol. waterlogging and soil return to salt, thus affecting crop growth, causing crop yield reduction or even death

[0003] At present, the main problems in terms of farmland drainage are as follows: 1. Lack of farmland water level monitoring system or insufficient monitoring; 2. Untimely drainage

In the current farmland drainage, the water in the farmland has exceeded the flood tolerance depth of the crops before drainage is carried out. In this way, the crops will be flooded for a long time. Once the moisture in the farmland exceeds the flood tolerance duration of the crops, the crops will often be greatly reduced or even die.

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