Abstract
In order to improve air pressure utilization and working performance, the direct seed-metering device for rice was designed with spoiler blades embedded in the air cavity. The study was carried out using theoretical analysis and hydrodynamic methods to obtain the optimum structure of the spoiler blades. Taking the rotating speed of the air cavity, the negative pressure of the air cavity, and the filling height as the test factors, the multiple regression analysis and the response surface analysis were carried out to obtain the best working parameters of the seed-metering device with spoiler blades. The results showed that when the rotating speed of the air cavity was 23.56 r/min, the negative pressure of the air cavity was 4.97 kPa and the filling height was 12.82 cm, the qualified index was 95.21%, the missing index was 3.28% and the multiple index was 1.51%, which was the best seeding performance. Comparing the test with the seed-metering device without spoiler blades, the results showed that the installation of spoiler blades can improve the performance of the seed-metering device under the best working parameters. This study provide a reference for the design of direct seed-metering device for rice.
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Claims 4
Claim · model-written summary
At the optimized settings, the qualified index was 95.21%.
- Taxon
- RICE
Oryza sativat0 - Outcome
- qualified indexe0
- Value
- 95.21%e0
- Qualifier
- rotating speed of the air cavity was 23.56 r/min, the negative pressure of the air cavity was 4.97 kPa and the filling height was 12.82 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“when the rotating speed of the air cavity was 23.56 r/min, the negative pressure of the air cavity was 4.97 kPa and the filling height was 12.82 cm, the qualified index was 95.21%”
Claim · model-written summary
At the optimized settings, the missing index was 3.28%.
- Taxon
- RICEOryza sativat0
- Outcome
- missing indexe0
- Value
- 3.28%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“the missing index was 3.28%”
Claim · model-written summary
At the optimized settings, the multiple index was 1.51%.
- Taxon
- RICEOryza sativat0
- Outcome
- multiple indexe0
- Value
- 1.51%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“the multiple index was 1.51%”
Claim · model-written summary
Installing spoiler blades improved seed-metering performance relative to no blades.
- Taxon
- RICEOryza sativat0
- Outcome
- performance of the seed-metering devicee0
- Direction
- improvee0
- Comparator
- seed-metering device without spoiler bladese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“Comparing the test with the seed-metering device without spoiler blades, the results showed that the installation of spoiler blades can improve the performance of the seed-metering device under the best working parameters”