Abstract
A pneumatic metering device with declined disc was designed for virus-free seed potato in order to improve the mechanization planting level of virus-free seed potato and guarantee the sowing quality.Single factor and orthogonal experiments were carried out.The relationships of performance indexes such as eligible index,multiple index,miss index and coefficient of variation with the rotational speed of metering shaft,tilt angle of metering disc and the shaped hole form of metering disc were analyzed.Single factor experiment showed that performance indexes were remarkably influenced by those three factors.Orthogonal experiment indicated that the eligible index reached as high as 97.62%,the miss index was 0.67%,and the coefficient of variation was 8.94%;while the rotational speed of metering shaft was 10 r/min,tilt angle of metering disc was 45°,and the shaped hole form of metering disc was cylindrical hole with 9 × Φ12 mm.The result of the study showed that pneumatic metering device with declined disc could meet the precision seeding requirements for virus-free seed potatoes with large piece and great differences in shape,and provide a new method for large piece seeds.
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Claims 5
Claim · model-written summary
All three device factors remarkably influenced performance indexes.
Verbatim
e0“performance indexes were remarkably influenced by those three factors”
t0“seed potato”
Claim · model-written summary
At the reported device settings, eligible index reached 97.62%.
Verbatim
e0“the eligible index reached as high as 97.62%,the miss index was 0.67%,and the coefficient of variation was 8.94%”
t0“Seed Potato”
Claim · model-written summary
At the reported device settings, miss index was 0.67%.
Verbatim
e0“the miss index was 0.67%”
t0“Seed Potato”
Claim · model-written summary
At the reported device settings, coefficient of variation was 8.94%.
Verbatim
e0“the coefficient of variation was 8.94%”
t0“Seed Potato”
Claim · model-written summary
The device met precision seeding requirements for large irregular virus-free seed potatoes.
Verbatim
e0“pneumatic metering device with declined disc could meet the precision seeding requirements for virus-free seed potatoes with large piece and great differences in shape”