PNEUMATIC SEEDING MECHANISM Russian patent published in 2008 - IPC A01C7/04 

FIELD: agriculture.

SUBSTANCE: seeding mechanism contains a bunker, a case, a cover, a gasket, a superfluous pressure channel, a seeding plate and an intake. The case has the seed chamber. There are two rows of the dosing elements in the seeding plate executed in the form of cissoid of rotation and connected in a radial direction. The intake has a spring-actuated tube located vertically. The inlet aperture of a tube is located in the horizontal plane passing through an axis of rotation of the seeding plate. The centre of an inlet aperture of a tube is located between trajectories of movement of internal and external row dosing element centres. Diameter of the tube inlet aperture of the intake is equal to two maximum diameters of dosing out elements. The cover and the gasket have ledges. The length of the cover and gasket ledges is bigger than distance from an external edge of a seeding plate to a circle of dosing elements arrangement of an internal row on the size equal to the minimum diameter of dosing elements. On the seeding plate cover, in a zone corresponding to the space between the top edge of the bunker inlet window and the superfluous pressure channel, are located the gauge of capture of seeds by a dosing element and a screen with the drive mechanism. The gauge is established on a circle of an arrangement of the centres of dosing out elements of an external number. The screen it is established on a circle of the centres arrangement of an internal row dosing elements.

EFFECT: quality increase of single-seed supply of seeds at high seeding speed

2 dwg