Fixed-distance seed metering device of peanut seeder

The fixed-distance seed metering device comprises a material storage box, a feeding port is formed in the top of the material storage box, a cover plate is rotationally connected in the feeding port through a rotating shaft, one end, far away from the rotating shaft, of the cover plate is fixedly connected with the inner wall of the feeding port through a locking screw, a discharging port is formed in the inner bottom of the material storage box, and the inner wall of the discharging port is fixedly connected with the cover plate through a locking screw. A discharging pipe is fixedly connected to the bottom of the discharging port in a sleeving mode, a material blocking plate is fixedly connected to the inner wall of the discharging pipe, a material guiding plate is fixedly connected to the inner side wall of the material storage box, a screw rod is rotatably inserted into one end of the discharging port, and a rotary knob is fixedly connected to one end of the screw rod; and the outer wall of the storage box