An internal air-filling seed gas suction type seed meter for large-sized seeds

Abstract

This application relates to an internally filled air-suction seed metering device for large-diameter seeds, comprising: a seed metering mechanism, a chassis, a seed feeding mechanism, an air chamber, a drive shaft, a transmission reversing structure, and a driven shaft; the drive shaft is rotatably connected to the center of the chassis, the seed metering mechanism is fixedly connected to the drive shaft and abuts against the chassis, the air chamber is embedded on the outside of the seed metering device and connected to a negative pressure device, the seed feeding mechanism is located below the chassis, the drive shaft is connected to the driven shaft after the transmission reversing structure reverses the transmission direction, and the driven shaft is connected to a circulating feeder; it can reduce the human resource input in the seed metering process, reduce seed loss in the seed metering process, form a stable seed flow in the seed metering device, have high seed filling efficiency, and standardize the seed landing posture, thereby ensuring the uniformity of sowing, high seed metering efficiency, and effectively improving seed germination rate and survival rate.

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