Flow dividing device for irrigation and water conservancy

The utility model relates to a farmland water conservancy flow dividing device which comprises a flow dividing unit and a plurality of extending units, the top end of the flow dividing unit communicates with an input pipeline, the bottom end of the flow dividing unit communicates with an output pipeline, and the flow dividing unit is fixedly connected with the adjacent extending units through bolts. The bottom ends of the extending units communicate with the output pipeline, the adjacent ends of every two adjacent extending units are fixedly connected through bolts, the flow dividing unit comprises a cross-shaped flow dividing main pipe, and one-way flow guiding assemblies are installed at the two transverse ends of the flow dividing main pipe correspondingly. Through cooperative use of the one-way flow guide assemblies and the opening and closing assemblies in the flow dividing unit and the extension unit, in the flow dividing water conveying process, the extension unit can be expanded and connected accordin