Air Suction Roller Precision Meter for Small Seeds of Multiple Shapes

Abstract

The invention discloses an air-suction roller-type precision seed metering device suitable for small particle seeds of various shapes. The air-suction roller-type precision seed metering device comprises a rotating shaft, a roller, a seed supply device and a seed scraping device. Both ends of the rotating shaft are respectively arranged on a rack through mounted bearings; the roller is fixed on the rotating shaft; a plurality of seed flow slots are distributed on the outer cylindrical surface of the roller radially; a plurality of seed suction air slots are formed below the seed flow slots axially; seed suction air holes are formed in the intersections of the seed flow slots and the seed suction air slots; the seed flow slots are communicated with the seed suction air slots through the seed suction air holes; the seed supply device is arranged on the lateral surface of the roller; the surface of the seed supply device, which is connected with the roller, is a seed stack contact surface; the seed scraping device comprises an upper seed scraping line and a lower seed scraping line; the upper seed scraping line and the lower seed scraping line are respectively arranged in the same direction with the seed suction air slots; the upper seed scraping line is positioned at the top of the seed stack contact surface; the lower seed scraping line is positioned in the middle of the seed stack contact surface. The seed metering device has a simple structure, good airtightness and high seeding efficiency and also can implement integration of multiple purposes into one whole body.

Description

technical field [0001] The invention relates to the field of agricultural machinery for industrialized seedling raising and precision seeding, in particular to an air-suction drum-type precision seed metering device suitable for multi-shaped small seeds. Background technique [0002] my country's agricultural and horticultural area is relatively large, and seedling cultivation and transplanting are increasingly valued because they can improve economic benefits, increase the multiple cropping index, and improve land utilization. Therefore, industrial seedling cultivation will inevitably play an important role in future agricultural development, and precision planting machinery development is particularly important. [0003] In the field of agricultural machinery, the research and application of facility seedling and seeding devices in my country started relatively late, and the overall level is low, with a domestic market share of less than 10%. The pneumatic precision seedin...

AI Technical Summary

Problems solved by technology

[0003] In the field of agricultural machinery, the research and application of facility seedling and seeding devices in my country started relatively late, and the overall level is low, with a domestic market share of less than 10%.

The thousand-grain weight of small seeds is small, and it is difficult for the weight of a single seed to make the seeds fall freely; the geometric size of small seeds is small, and it is difficult to achieve a close fit between a single seed and the suction hole during the seed suction process, especially for small flat seeds It is more difficult to achieve a seed suction hole to absorb a single seed; while the conventional scraping device has a more obvious crushing effect on small seeds

Therefore, the current pneumatic seed metering device is not suitable for small seeds, especially small flat seeds, and it is quite difficult to sow

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