Tenon-insertion type seed discharging wheel

The utility model belongs to agricultural machinery and relates to a tenon splicing seed wheel used for a mechanical seeder. The tenon plug-in seed wheel comprises a cylindrical basal body which is divided into two parts along an axial direction; the two parts are connected though the vertical splicing and matching of a dovetail tenon and a dovetail groove; the mounting hole in the center of the basal body is also divided into two parts. Because the basal body of the seed wheel is divided into the two parts which are vertically spliced by the dovetail tenon and the dovetail groove, when the seed wheel is to be replaced in a use process, positioning parts are firstly disassembled, and then the two parts of the basal body of the feed wheel are vertically staggered at a distance so that the seed wheel can be disassembled without disassembling a seeding transmission shaft and other feed wheels. The utility model greatly simplifies the disassembly and maintenance processes and improves the operation efficiency.