| 摘要 |
The invention is a seed metering device for metered discharging of agricultural seeds and the like. The seed metering device is designed to collect seed in a singular or group fashion and deposit the same at predetermined and accurate intervals in a seed trench. The device includes a seed disk which contains a plurality of seed containment pockets. These pockets can be depressurized by imparting a partial vacuum. The seed disk sits between a manifold and a housing which define a seed collection area and a seed release area. Seed enters the seed collection area through a seed intake opening in the upper portion of the housing. This portion opens to a seed downfall region that widens into the seed collection area. As the disk rotates between the seed collection area and the seed release area, the seed pockets contained on the seed disk are pressurized thereby acquiring a seed and carrying or conveying the seed to the seed release point. When the seed pocket reaches the seed release point, the vacuum within the pocket is neutralized causing the seed to fall from the seed disk into the seed release area and out through a seed release opening. |
