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CN-121970669-A - Farmland irrigation drainage system device and method

CN121970669ACN 121970669 ACN121970669 ACN 121970669ACN-121970669-A

Abstract

The invention relates to a farmland irrigation and drainage system device and method, and belongs to the technical field of agricultural water conservancy. The device aims at solving the problems of easy waterlogging and easy drought in farmlands and low efficiency in the traditional irrigation mode. The technical scheme includes that the system comprises a long-distance large-caliber water delivery pipeline, a flood drainage pipeline communicated with the pipeline, a flood drainage well arranged in a farmland and communicated with the flood drainage pipeline, an irrigation pipe network buried underground, and an irrigation water supply system arranged in the flood drainage well. And when drought, the irrigation water supply system takes water from the long-distance large-caliber water delivery pipeline into the flood discharge well, and then the water is pressurized by a water pump and then is delivered to the underground irrigation pipe network to irrigate the roots of crops. The invention integrates drainage and irrigation, realizes the functions of drought and waterlogging, water and energy conservation, time and labor saving and automatic operation, and can also have the functions of improving saline-alkali soil, integrally applying water and fertilizer, and the like.

Inventors

  • LI ZHONGTAO

Assignees

  • 李宁

Dates

Publication Date
20260505
Application Date
20260331

Claims (8)

  1. 1. A system for draining water from a farm field irrigation system, comprising: a long-distance large-caliber water delivery pipeline (1); A flood discharge well (7) arranged in the farmland area; A network of underground irrigation pipes; The system has a switchable drainage mode and irrigation mode; Under the flood drainage mode, a first fluid passage for draining farmland surface runoffs into the long-distance large-caliber water conveying pipeline (1) through the flood drainage mouth well (7) is established; in the irrigation mode, a second fluid passage is established for taking water from the long-distance large-caliber water conveying pipeline (1), transferring the water through the flood discharge well (7) and finally pumping the water to the underground irrigation pipe network.
  2. 2. The system device for farmland irrigation and drainage according to claim 1, characterized in that the top of the drain well (7) is provided with an openable drain cover plate (7.1), and the establishment of the first fluid path comprises opening the drain cover plate (7.1) by means of a hydraulic jacking device (7.2) to form an inlet for surface runoff.
  3. 3. The agricultural irrigation drainage system apparatus of claim 1, wherein the establishment of the second fluid path comprises the steps of: Starting an irrigation and alkali pressing water inlet pipe water pump (6) to pump water into the flood discharge well (7) from the long-distance large-caliber water conveying pipeline (1); And starting an irrigation and alkali pressing water outlet main pipeline water pump (8) arranged in the flood discharging mouth well (7) to pump the water in the well to the underground irrigation pipe network.
  4. 4. The farmland irrigation and drainage system device according to claim 1, characterized in that an electrically controlled pressure regulating valve (10) is further arranged between the irrigation and alkali pressing main water outlet pipe water pump (8) and the irrigation and alkali pressing main pipe (9) for regulating the water pressure delivered to the underground irrigation pipe network.
  5. 5. The agricultural irrigation drainage system apparatus of claim 1, wherein the underground irrigation pipe network comprises at least one of the following branches: A crop irrigation branch pipe (11), the pipe wall of which is provided with upward water outlet holes; And the pipe wall of the saline-alkali soil saline-alkali branch pipe (12) is provided with downward water outlets.
  6. 6. The farmland irrigation and drainage system device according to claim 1, wherein the bottom of the flood drainage well (7) is further provided with a mud sedimentation tank (7.4), a mud pump (13) is further arranged in the flood drainage well (7), the inlet of the mud pump (13) is positioned in the mud sedimentation tank (7.4), and the outlet of the mud pump is communicated with the outside through a mud drainage pipeline (14).
  7. 7. The farmland irrigation and drainage system device according to claim 1, wherein the irrigation water supply system further comprises an automatic control circuit, the automatic control circuit comprises a time control switch and an alternating current contactor, the time control switch is used for controlling the on-off of the alternating current contactor coil according to preset time, and the main contact of the alternating current contactor is connected in series in a circuit for supplying power to the irrigation and alkali pressing water inlet pipe water pump (6) or the irrigation and alkali pressing water outlet main pipeline water pump (8).
  8. 8. A method of controlling a system for draining water using the farm irrigation according to any of claims 1 to 7, comprising the steps of: a) When water logging is needed, opening a flood drainage port cover plate (7.1) of the flood drainage port well (7), and establishing the first fluid passage to enable farmland surface runoff to be drained into the long-distance large-caliber water conveying pipeline (1) through the flood drainage port well (7); b) And (3) starting an irrigation mode, namely closing the flood discharge opening cover plate (7.1) when irrigation is needed, establishing the second fluid passage, taking water from the long-distance large-caliber water delivery pipeline (1) into the flood discharge opening well (7) for storage, and pumping the water to the underground irrigation pipe network under pressure for irrigation.

Description

Farmland irrigation drainage system device and method Technical Field The invention relates to a farmland irrigation and drainage system device and method, and belongs to the technical field of agricultural water conservancy. Background In agricultural production, regulation of water resources is critical. On the one hand, in rainy seasons or in continuous heavy rainfall weather, water is easy to form in farmland, if water drainage is not smooth, crops can be flooded, waterlogging disasters are formed, and crop growth and harvest are seriously affected. Existing drain trench systems tend to be limited in their ability to cope with extreme weather conditions. On the other hand, during drought seasons, large amounts of irrigation water are required for farmlands. The current commonly adopted drip irrigation, spray irrigation or large water flood irrigation modes have various defects that a large number of pipelines are paved on the ground surface, the pipelines are easily damaged by agricultural machinery, the maintenance cost is high, and the large water flood irrigation causes water resource waste and has low efficiency. The traditional irrigation modes all require farmers to put a great deal of manual labor, are time-consuming and labor-consuming, and are extremely tested on the bodies of the farmers especially in hot and cold weather. Therefore, how to design a farmland water conservancy system which can not only effectively prevent and drain water, but also realize efficient, water-saving and automatic irrigation is a technical problem to be solved urgently in the current agriculture field. Disclosure of Invention The invention aims to solve the technical problems of insufficient drainage capacity, lagging irrigation mode, high labor intensity, water resource waste and the like of the existing farmland water conservancy facilities, and realizes modern agricultural production of drought and flood conservation. The invention relates to a farmland irrigation and drainage system device, which comprises: a long-distance large-caliber water delivery pipeline; the flood discharging opening well is arranged in the farmland area; A network of underground irrigation pipes; The system has a switchable drainage mode and irrigation mode; Under the flood drainage mode, a first fluid passage for draining farmland surface runoffs into the long-distance large-caliber water conveying pipeline through the flood drainage mouth well is established; And in the irrigation mode, establishing a second fluid passage for taking water from the long-distance large-caliber water delivery pipeline, transferring the water through the flood discharge well, and finally pumping the water to the underground irrigation pipe network. The method comprises the steps of forming a surface runoff inlet by using a hydraulic jacking device, and further arranging an openable and closable flood discharge opening cover plate at the top of the flood discharge opening well, wherein the establishment of the first fluid passage comprises the step of opening the flood discharge opening cover plate through the hydraulic jacking device. Further, the establishment of the second fluid path comprises the steps of: Starting an irrigation and alkali pressing water inlet pipe water pump to pump water into the flood discharge well from the long-distance large-caliber water conveying pipeline; and starting an irrigation and alkali pressing water outlet main pipeline water pump arranged in the flood discharge well, and pumping the water in the well to the underground irrigation pipe network. Further, an electric control pressure regulating valve is arranged between the irrigation and alkali pressing main water outlet pipeline water pump and the irrigation and alkali pressing main pipeline water pump and is used for regulating the water pressure delivered to the underground irrigation pipe network. Further, the underground irrigation pipe network comprises at least one of the following branch pipes: the pipe wall of the crop irrigation branch pipe is provided with upward water outlet holes; the pipe wall of the saline-alkali soil saline-alkali branch pipe is provided with downward water outlets. Further, a mud sedimentation tank is further arranged at the bottom of the flood discharge well, a mud pump is further arranged in the flood discharge well, an inlet of the mud pump is positioned in the mud sedimentation tank, and an outlet of the mud pump is communicated with the outside through a mud drainage pipeline. Further, the irrigation water supply system further comprises an automatic control circuit, the automatic control circuit comprises a time control switch and an alternating current contactor, the time control switch is used for controlling the on-off of the alternating current contactor coil according to preset time, and a main contact of the alternating current contactor is connected in series in a circuit for supplying power to the irrigation and alkali pres