SEED METER

摘要

A seed meter for an agricultural planter in which the seed disc is rotatably mounted within a seed meter housing. As the seed disc rotates, the apertures in the disc rotate along a seed aperture path through a horizontally adjacent seed pool area. The seed disc includes cavities disposed along the seed aperture path to agitate the seeds in the seed pool area. A singulator having multiple co-planar singulator surfaces is biased against the seed side surface of the seed disc.

主权项

1. A seed distribution element for precision pneumatic seed drills, comprising:
a sowing disc which is rotated by a motor-driven transmission drive shaft at controlled speed; a housing with a fixed portion and a portion which is movable relative to the fixed portion and can be closed against the fixed portion; a seed collection chamber being defined in the fixed portion; a pneumatic suction chamber being defined in the movable portion; the sowing disc being interposed between the fixed and movable portions and having opposed surfaces delimiting the chambers; the sowing disc having at least one ring of selector holes extending between the opposed surfaces; and a seal which is arranged on the movable portion and is capable of sliding contact with the facing surface of the disc when the fixed and movable portions are closed against one another; wherein a pressure differential is provided between the opposed surfaces in the region of a circumferential segment of the ring of holes; wherein the seed distribution element further comprises a thrust-bearing element of the sowing disc, which thrust-bearing element is supported rotatably in the movable portion in order to withstand at least some of the axial load produced by the disc on the seal.